[binutils.git] / bfd / libaout.h

/* BFD back-end data structures for a.out (and similar) files.
   Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
   Written by Cygnus Support.

This file is part of BFD, the Binary File Descriptor library.

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.  */

/* We try to encapsulate the differences in the various a.out file
   variants in a few routines, and otherwise share large masses of code.
   This means we only have to fix bugs in one place, most of the time.  */

/* Parameterize the a.out code based on whether it is being built
   for a 32-bit architecture or a 64-bit architecture.  */
#if ARCH_SIZE==64
#define GET_WORD bfd_h_get_64
#define GET_SWORD bfd_h_get_signed_64
#define PUT_WORD bfd_h_put_64
#ifndef NAME
#define NAME(x,y) CAT3(x,_64_,y)
#endif
#define JNAME(x) CAT(x,_64)
#define BYTES_IN_WORD 8
#else /* ARCH_SIZE == 32 */
#define GET_WORD bfd_h_get_32
#define GET_SWORD bfd_h_get_signed_32
#define PUT_WORD bfd_h_put_32
#ifndef NAME
#define NAME(x,y) CAT3(x,_32_,y)
#endif
#define JNAME(x) CAT(x,_32)
#define BYTES_IN_WORD 4
#endif /* ARCH_SIZE==32 */

/* Declare at file level, since it isused in parameter lists, which
   have weird scope.  */
struct external_exec;

/* Back-end information for various a.out targets.  */
struct aout_backend_data
{
  /* Are ZMAGIC files mapped contiguously?  If so, the text section may
     need more padding, if the segment size (granularity for memory access
     control) is larger than the page size.  */
  unsigned char zmagic_mapped_contiguous;
  /* If this flag is set, ZMAGIC/NMAGIC file headers get mapped in with the
     text section, which starts immediately after the file header.
     If not, the text section starts on the next page.  */
  unsigned char text_includes_header;

  /* If the text section VMA isn't specified, and we need an absolute
     address, use this as the default.  If we're producing a relocatable
     file, zero is always used.  */
  /* ?? Perhaps a callback would be a better choice?  Will this do anything
     reasonable for a format that handles multiple CPUs with different
     load addresses for each?  */
  bfd_vma default_text_vma;

  /* Callback for setting the page and segment sizes, if they can't be
     trivially determined from the architecture.  */
  boolean (*set_sizes) PARAMS ((bfd *));

  /* zmagic files only. For go32, the length of the exec header contributes
     to the size of the text section in the file for alignment purposes but
     does *not* get counted in the length of the text section. */
  unsigned char exec_header_not_counted;
};
#define aout_backend_info(abfd) \
	((CONST struct aout_backend_data *)((abfd)->xvec->backend_data))

/* This is the layout in memory of a "struct exec" while we process it.
   All 'lengths' are given as a number of bytes.
   All 'alignments' are for relinkable files only;  an alignment of
	'n' indicates the corresponding segment must begin at an
	address that is a multiple of (2**n).  */

struct internal_exec
{
    long a_info;		/* Magic number and flags, packed */
    bfd_vma a_text;		/* length of text, in bytes  */
    bfd_vma a_data;		/* length of data, in bytes  */
    bfd_vma a_bss;		/* length of uninitialized data area in mem */
    bfd_vma a_syms;		/* length of symbol table data in file */
    bfd_vma a_entry;		/* start address */
    bfd_vma a_trsize;		/* length of text's relocation info, in bytes */
    bfd_vma a_drsize;		/* length of data's relocation info, in bytes */
    /* Added for i960 */
    bfd_vma a_tload;		/* Text runtime load address */
    bfd_vma a_dload;		/* Data runtime load address */
    unsigned char a_talign;	/* Alignment of text segment */
    unsigned char a_dalign;	/* Alignment of data segment */
    unsigned char a_balign;	/* Alignment of bss segment */
    char a_relaxable;           /* Enough info for linker relax */
};

/* Magic number is written 
< MSB        >
3130292827262524232221201918171615141312111009080706050403020100
< FLAGS      >< MACHINE TYPE ><  MAGIC NUMBER		       >
*/
/* Magic number for NetBSD is
<MSB         >
3130292827262524232221201918171615141312111009080706050403020100
< FLAGS    ><                  ><  MAGIC NUMBER                >
*/

enum machine_type {
  M_UNKNOWN = 0,
  M_68010 = 1,
  M_68020 = 2,
  M_SPARC = 3,
  /* skip a bunch so we don't run into any of suns numbers */
  M_386 = 100,
  M_29K = 101,          /* AMD 29000 */
  M_386_DYNIX = 102,	/* Sequent running dynix */
  M_386_NETBSD = 134,		/* NetBSD/386 binary */
  M_MIPS1 = 151,        /* MIPS R2000/R3000 binary */
  M_MIPS2 = 152,        /* MIPS R4000/R6000 binary */
  M_HP200 = 200,	/* HP 200 (68010) BSD binary */
  M_HP300 = (300 % 256), /* HP 300 (68020+68881) BSD binary */
  M_HPUX = (0x20c % 256)/* HP 200/300 HPUX binary */
};

#define N_DYNAMIC(exec) ((exec).a_info & 0x8000000)

#ifndef N_MAGIC
# define N_MAGIC(exec) ((exec).a_info & 0xffff)
#endif

#ifndef N_MACHTYPE
# define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
#endif

#ifndef N_FLAGS
# define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
#endif

#ifndef N_SET_INFO
# define N_SET_INFO(exec, magic, type, flags) \
((exec).a_info = ((magic) & 0xffff) \
 | (((int)(type) & 0xff) << 16) \
 | (((flags) & 0xff) << 24))
#endif

#ifndef N_SET_MAGIC
# define N_SET_MAGIC(exec, magic) \
((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
#endif

#ifndef N_SET_MACHTYPE
# define N_SET_MACHTYPE(exec, machtype) \
((exec).a_info = \
 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
#endif

#ifndef N_SET_FLAGS
# define N_SET_FLAGS(exec, flags) \
((exec).a_info = \
 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
#endif

typedef struct aout_symbol {
  asymbol symbol;
  short desc;
  char other;
  unsigned char type;
} aout_symbol_type;

/* The `tdata' struct for all a.out-like object file formats.
   Various things depend on this struct being around any time an a.out
   file is being handled.  An example is dbxread.c in GDB.  */

struct aoutdata {
  struct internal_exec *hdr;		/* exec file header */
  aout_symbol_type *symbols;		/* symtab for input bfd */
  
  /* For ease, we do this */
  asection *textsec;
  asection *datasec;
  asection *bsssec;

  /* We remember these offsets so that after check_file_format, we have
     no dependencies on the particular format of the exec_hdr.  */
  file_ptr sym_filepos;
  file_ptr str_filepos;

  /* Size of a relocation entry in external form */
  unsigned reloc_entry_size;

  /* Size of a symbol table entry in external form */
  unsigned symbol_entry_size;

  /* Page size - needed for alignment of demand paged files. */
  unsigned long page_size;

  /* Segment size - needed for alignment of demand paged files. */
  unsigned long segment_size;

  unsigned exec_bytes_size;
  unsigned vma_adjusted : 1;

  /* used when a bfd supports several highly similar formats */
  enum {
    default_format = 0,
    gnu_encap_format } subformat;

  enum {
    undecided_magic = 0,
    z_magic,
    o_magic,
    n_magic } magic;

  /* The external symbol information.  */
  struct external_nlist *external_syms;
  bfd_size_type external_sym_count;
  char *external_strings;
  struct aout_link_hash_entry **sym_hashes;
};

struct  aout_data_struct {
    struct aoutdata a;
    struct internal_exec e;
};

#define	adata(bfd)		((bfd)->tdata.aout_data->a)
#define	exec_hdr(bfd)		(adata(bfd).hdr)
#define	obj_aout_symbols(bfd)	(adata(bfd).symbols)
#define	obj_textsec(bfd)	(adata(bfd).textsec)
#define	obj_datasec(bfd)	(adata(bfd).datasec)
#define	obj_bsssec(bfd)		(adata(bfd).bsssec)
#define	obj_sym_filepos(bfd)	(adata(bfd).sym_filepos)
#define	obj_str_filepos(bfd)	(adata(bfd).str_filepos)
#define	obj_reloc_entry_size(bfd) (adata(bfd).reloc_entry_size)
#define	obj_symbol_entry_size(bfd) (adata(bfd).symbol_entry_size)
#define obj_aout_subformat(bfd)	(adata(bfd).subformat)
#define obj_aout_external_syms(bfd) (adata(bfd).external_syms)
#define obj_aout_external_sym_count(bfd) (adata(bfd).external_sym_count)
#define obj_aout_external_strings(bfd) (adata(bfd).external_strings)
#define obj_aout_sym_hashes(bfd) (adata(bfd).sym_hashes)

/* We take the address of the first element of an asymbol to ensure that the
   macro is only ever applied to an asymbol */
#define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd))

/* Prototype declarations for functions defined in aoutx.h  */

boolean
NAME(aout,squirt_out_relocs) PARAMS ((bfd *abfd, asection *section));

bfd_target *
NAME(aout,some_aout_object_p) PARAMS ((bfd *abfd,
			struct internal_exec *execp,
			bfd_target * (*callback)(bfd *)));

boolean
NAME(aout,mkobject) PARAMS ((bfd *abfd));

enum machine_type
NAME(aout,machine_type) PARAMS ((enum bfd_architecture arch,
				 unsigned long machine));

boolean
NAME(aout,set_arch_mach) PARAMS ((bfd *abfd, enum bfd_architecture arch,
		 		  unsigned long machine));

boolean
NAME(aout,new_section_hook) PARAMS ((bfd *abfd, asection *newsect));

boolean
NAME(aout,set_section_contents) PARAMS ((bfd *abfd, sec_ptr section,
			 PTR location, file_ptr offset, bfd_size_type count));

asymbol *
NAME(aout,make_empty_symbol) PARAMS ((bfd *abfd));

boolean
NAME(aout,slurp_symbol_table) PARAMS ((bfd *abfd));

boolean
NAME(aout,write_syms) PARAMS ((bfd *abfd));

void
NAME(aout,reclaim_symbol_table) PARAMS ((bfd *abfd));

unsigned int
NAME(aout,get_symtab_upper_bound) PARAMS ((bfd *abfd));

unsigned int
NAME(aout,get_symtab) PARAMS ((bfd *abfd, asymbol **location));

boolean
NAME(aout,slurp_reloc_table) PARAMS ((bfd *abfd, sec_ptr asect,
				      asymbol **symbols));

unsigned int
NAME(aout,canonicalize_reloc) PARAMS ((bfd *abfd, sec_ptr section,
				       arelent **relptr, asymbol **symbols));

unsigned int
NAME(aout,get_reloc_upper_bound) PARAMS ((bfd *abfd, sec_ptr asect));

void
NAME(aout,reclaim_reloc) PARAMS ((bfd *ignore_abfd, sec_ptr ignore));

alent *
NAME(aout,get_lineno) PARAMS ((bfd *ignore_abfd, asymbol *ignore_symbol));

void
NAME(aout,print_symbol) PARAMS ((bfd *ignore_abfd, PTR file,
			    asymbol *symbol, bfd_print_symbol_type how));

void
NAME(aout,get_symbol_info) PARAMS ((bfd *ignore_abfd,
                           asymbol *symbol, symbol_info *ret));

boolean
NAME(aout,close_and_cleanup) PARAMS ((bfd *abfd));

boolean
NAME(aout,find_nearest_line) PARAMS ((bfd *abfd, asection *section,
      asymbol **symbols, bfd_vma offset, CONST char **filename_ptr,
      CONST char **functionname_ptr, unsigned int *line_ptr));

int
NAME(aout,sizeof_headers) PARAMS ((bfd *abfd, boolean exec));

boolean
NAME(aout,adjust_sizes_and_vmas) PARAMS ((bfd *abfd,
       bfd_size_type *text_size, file_ptr *text_end));

void
NAME(aout,swap_exec_header_in) PARAMS ((bfd *abfd,
       struct external_exec *raw_bytes, struct internal_exec *execp));

void
NAME(aout,swap_exec_header_out) PARAMS ((bfd *abfd,
       struct internal_exec *execp, struct external_exec *raw_bytes));

struct bfd_link_hash_table *
NAME(aout,link_hash_table_create) PARAMS ((bfd *));

boolean
NAME(aout,link_add_symbols) PARAMS ((bfd *, struct bfd_link_info *));

boolean
NAME(aout,final_link) PARAMS ((bfd *, struct bfd_link_info *,
			       void (*) (bfd *, file_ptr *, file_ptr *,
					 file_ptr *)));

/* Prototypes for functions in stab-syms.c. */

CONST char *
aout_stab_name PARAMS ((int code));

/* A.out uses the generic versions of these routines... */

#define	aout_32_get_section_contents	bfd_generic_get_section_contents
#define	aout_32_close_and_cleanup	bfd_generic_close_and_cleanup

#define	aout_64_get_section_contents	bfd_generic_get_section_contents
#define	aout_64_close_and_cleanup	bfd_generic_close_and_cleanup
#ifndef NO_WRITE_HEADER_KLUDGE
#define NO_WRITE_HEADER_KLUDGE 0
#endif

#ifndef WRITE_HEADERS
#define WRITE_HEADERS(abfd, execp)					      \
      {									      \
	bfd_size_type text_size; /* dummy vars */			      \
	file_ptr text_end;						      \
	if (adata(abfd).magic == undecided_magic)			      \
	  NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end);     \
    									      \
	execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE;	      \
	execp->a_entry = bfd_get_start_address (abfd);			      \
    									      \
	execp->a_trsize = ((obj_textsec (abfd)->reloc_count) *		      \
			   obj_reloc_entry_size (abfd));		      \
	execp->a_drsize = ((obj_datasec (abfd)->reloc_count) *		      \
			   obj_reloc_entry_size (abfd));		      \
	NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes);	      \
									      \
	bfd_seek (abfd, (file_ptr) 0, SEEK_SET);			      \
	bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd);	      \
	/* Now write out reloc info, followed by syms and strings */	      \
  									      \
	if (bfd_get_outsymbols (abfd) != (asymbol **) NULL		      \
	    && bfd_get_symcount (abfd) != 0) 				      \
	    {								      \
	      bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET);	      \
									      \
	      if (! NAME(aout,write_syms)(abfd)) return false;		      \
									      \
	      bfd_seek (abfd, (file_ptr)(N_TRELOFF(*execp)), SEEK_SET);	      \
									      \
	      if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) return false; \
	      bfd_seek (abfd, (file_ptr)(N_DRELOFF(*execp)), SEEK_SET);	      \
									      \
	      if (!NAME(aout,squirt_out_relocs)(abfd, obj_datasec (abfd))) return false; \
	    }								      \
      }									      
#endif
Commit	Line	Data
69ebee86	1	/* BFD back-end data structures for a.out (and similar) files.
1f29e30b	2	Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
9e2dad8e	3	Written by Cygnus Support.
69ebee86	4
9e2dad8e	5	This file is part of BFD, the Binary File Descriptor library.
69ebee86	6
9e2dad8e	7	This program is free software; you can redistribute it and/or modify
4a81b561	8	it under the terms of the GNU General Public License as published by
9e2dad8e JG	9	the Free Software Foundation; either version 2 of the License, or
9e2dad8e JG	10	(at your option) any later version.
4a81b561	11
9e2dad8e	12	This program is distributed in the hope that it will be useful,
4a81b561 DHW	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
9e2dad8e JG	18	along with this program; if not, write to the Free Software
	19	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
	20
	21	/* We try to encapsulate the differences in the various a.out file
	22	variants in a few routines, and otherwise share large masses of code.
	23	This means we only have to fix bugs in one place, most of the time. */
4a81b561	24
359f1dee JG	25	/* Parameterize the a.out code based on whether it is being built
359f1dee JG	26	for a 32-bit architecture or a 64-bit architecture. */
c0e5039e JG	27	#if ARCH_SIZE==64
c0e5039e JG	28	#define GET_WORD bfd_h_get_64
4c3721d5	29	#define GET_SWORD bfd_h_get_signed_64
c0e5039e	30	#define PUT_WORD bfd_h_put_64
c2623b7d	31	#ifndef NAME
c0e5039e	32	#define NAME(x,y) CAT3(x,_64_,y)
c2623b7d	33	#endif
c0e5039e JG	34	#define JNAME(x) CAT(x,_64)
c0e5039e JG	35	#define BYTES_IN_WORD 8
c2623b7d	36	#else /* ARCH_SIZE == 32 */
c0e5039e	37	#define GET_WORD bfd_h_get_32
4c3721d5	38	#define GET_SWORD bfd_h_get_signed_32
c0e5039e	39	#define PUT_WORD bfd_h_put_32
c2623b7d	40	#ifndef NAME
c0e5039e	41	#define NAME(x,y) CAT3(x,_32_,y)
c2623b7d	42	#endif
c0e5039e JG	43	#define JNAME(x) CAT(x,_32)
c0e5039e JG	44	#define BYTES_IN_WORD 4
c2623b7d	45	#endif /* ARCH_SIZE==32 */
c0e5039e	46
728472f1 ILT	47	/* Declare at file level, since it isused in parameter lists, which
728472f1 ILT	48	have weird scope. */
9e2dad8e	49	struct external_exec;
9e2dad8e	50
ce07dd7c KR	51	/* Back-end information for various a.out targets. */
	52	struct aout_backend_data
	53	{
	54	/* Are ZMAGIC files mapped contiguously? If so, the text section may
	55	need more padding, if the segment size (granularity for memory access
	56	control) is larger than the page size. */
7f90aa8b	57	unsigned char zmagic_mapped_contiguous;
ce07dd7c KR	58	/* If this flag is set, ZMAGIC/NMAGIC file headers get mapped in with the
	59	text section, which starts immediately after the file header.
	60	If not, the text section starts on the next page. */
7f90aa8b	61	unsigned char text_includes_header;
ce07dd7c KR	62
	63	/* If the text section VMA isn't specified, and we need an absolute
	64	address, use this as the default. If we're producing a relocatable
	65	file, zero is always used. */
	66	/* ?? Perhaps a callback would be a better choice? Will this do anything
	67	reasonable for a format that handles multiple CPUs with different
	68	load addresses for each? */
	69	bfd_vma default_text_vma;
7f90aa8b ME	70
	71	/* Callback for setting the page and segment sizes, if they can't be
	72	trivially determined from the architecture. */
	73	boolean (set_sizes) PARAMS ((bfd ));
	74
	75	/* zmagic files only. For go32, the length of the exec header contributes
	76	to the size of the text section in the file for alignment purposes but
	77	does not get counted in the length of the text section. */
	78	unsigned char exec_header_not_counted;
ce07dd7c KR	79	};
	80	#define aout_backend_info(abfd) \
	81	((CONST struct aout_backend_data *)((abfd)->xvec->backend_data))
	82
0fa4f690 JG	83	/* This is the layout in memory of a "struct exec" while we process it.
	84	All 'lengths' are given as a number of bytes.
	85	All 'alignments' are for relinkable files only; an alignment of
	86	'n' indicates the corresponding segment must begin at an
	87	address that is a multiple of (2*n). /
	88
	89	struct internal_exec
	90	{
	91	long a_info; /* Magic number and flags, packed */
	92	bfd_vma a_text; /* length of text, in bytes */
	93	bfd_vma a_data; /* length of data, in bytes */
	94	bfd_vma a_bss; /* length of uninitialized data area in mem */
	95	bfd_vma a_syms; /* length of symbol table data in file */
	96	bfd_vma a_entry; /* start address */
	97	bfd_vma a_trsize; /* length of text's relocation info, in bytes */
	98	bfd_vma a_drsize; /* length of data's relocation info, in bytes */
	99	/* Added for i960 */
	100	bfd_vma a_tload; /* Text runtime load address */
	101	bfd_vma a_dload; /* Data runtime load address */
	102	unsigned char a_talign; /* Alignment of text segment */
	103	unsigned char a_dalign; /* Alignment of data segment */
	104	unsigned char a_balign; /* Alignment of bss segment */
7f90aa8b	105	char a_relaxable; /* Enough info for linker relax */
0fa4f690 JG	106	};
	107
	108	/* Magic number is written
	109	< MSB >
	110	3130292827262524232221201918171615141312111009080706050403020100
	111	< FLAGS >< MACHINE TYPE >< MAGIC NUMBER >
	112	*/
4c3721d5 ILT	113	/* Magic number for NetBSD is
	114	<MSB >
	115	3130292827262524232221201918171615141312111009080706050403020100
	116	< FLAGS >< >< MAGIC NUMBER >
	117	*/
	118
0fa4f690 JG	119	enum machine_type {
	120	M_UNKNOWN = 0,
	121	M_68010 = 1,
	122	M_68020 = 2,
	123	M_SPARC = 3,
9eb73722	124	/* skip a bunch so we don't run into any of suns numbers */
0fa4f690	125	M_386 = 100,
9eb73722	126	M_29K = 101, /* AMD 29000 */
4c3721d5 ILT	127	M_386_DYNIX = 102, /* Sequent running dynix */
4c3721d5 ILT	128	M_386_NETBSD = 134, /* NetBSD/386 binary */
9eb73722 KR	129	M_MIPS1 = 151, /* MIPS R2000/R3000 binary */
9eb73722 KR	130	M_MIPS2 = 152, /* MIPS R4000/R6000 binary */
0fa4f690 JG	131	M_HP200 = 200, /* HP 200 (68010) BSD binary */
0fa4f690 JG	132	M_HP300 = (300 % 256), /* HP 300 (68020+68881) BSD binary */
ce07dd7c	133	M_HPUX = (0x20c % 256)/* HP 200/300 HPUX binary */
0fa4f690 JG	134	};
	135
	136	#define N_DYNAMIC(exec) ((exec).a_info & 0x8000000)
	137
4c3721d5 ILT	138	#ifndef N_MAGIC
	139	# define N_MAGIC(exec) ((exec).a_info & 0xffff)
	140	#endif
	141
	142	#ifndef N_MACHTYPE
	143	# define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
	144	#endif
	145
	146	#ifndef N_FLAGS
	147	# define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
	148	#endif
	149
	150	#ifndef N_SET_INFO
	151	# define N_SET_INFO(exec, magic, type, flags) \
0fa4f690 JG	152	((exec).a_info = ((magic) & 0xffff) \
	153	\| (((int)(type) & 0xff) << 16) \
	154	\| (((flags) & 0xff) << 24))
4c3721d5	155	#endif
0fa4f690	156
4c3721d5 ILT	157	#ifndef N_SET_MAGIC
4c3721d5 ILT	158	# define N_SET_MAGIC(exec, magic) \
0fa4f690	159	((exec).a_info = (((exec).a_info & 0xffff0000) \| ((magic) & 0xffff)))
4c3721d5	160	#endif
0fa4f690	161
4c3721d5 ILT	162	#ifndef N_SET_MACHTYPE
4c3721d5 ILT	163	# define N_SET_MACHTYPE(exec, machtype) \
0fa4f690 JG	164	((exec).a_info = \
0fa4f690 JG	165	((exec).a_info&0xff00ffff) \| ((((int)(machtype))&0xff) << 16))
4c3721d5	166	#endif
0fa4f690	167
4c3721d5 ILT	168	#ifndef N_SET_FLAGS
4c3721d5 ILT	169	# define N_SET_FLAGS(exec, flags) \
0fa4f690 JG	170	((exec).a_info = \
0fa4f690 JG	171	((exec).a_info&0x00ffffff) \| (((flags) & 0xff) << 24))
4c3721d5	172	#endif
0fa4f690	173
69ebee86	174	typedef struct aout_symbol {
4a81b561 DHW	175	asymbol symbol;
4a81b561 DHW	176	short desc;
69ebee86 JG	177	char other;
69ebee86 JG	178	unsigned char type;
4a81b561 DHW	179	} aout_symbol_type;
4a81b561 DHW	180
0fa4f690 JG	181	/* The `tdata' struct for all a.out-like object file formats.
	182	Various things depend on this struct being around any time an a.out
	183	file is being handled. An example is dbxread.c in GDB. */
	184
69ebee86	185	struct aoutdata {
0fa4f690	186	struct internal_exec hdr; / exec file header */
4a81b561	187	aout_symbol_type symbols; / symtab for input bfd */
4a81b561 DHW	188
	189	/* For ease, we do this */
	190	asection *textsec;
	191	asection *datasec;
	192	asection *bsssec;
	193
	194	/* We remember these offsets so that after check_file_format, we have
	195	no dependencies on the particular format of the exec_hdr. */
	196	file_ptr sym_filepos;
	197	file_ptr str_filepos;
4a81b561	198
0fa4f690	199	/* Size of a relocation entry in external form */
69ebee86	200	unsigned reloc_entry_size;
4a81b561	201
0fa4f690 JG	202	/* Size of a symbol table entry in external form */
0fa4f690 JG	203	unsigned symbol_entry_size;
4a81b561	204
0fa4f690 JG	205	/* Page size - needed for alignment of demand paged files. */
0fa4f690 JG	206	unsigned long page_size;
4a81b561	207
0fa4f690 JG	208	/* Segment size - needed for alignment of demand paged files. */
0fa4f690 JG	209	unsigned long segment_size;
4a81b561	210
0fa4f690	211	unsigned exec_bytes_size;
ce07dd7c KR	212	unsigned vma_adjusted : 1;
ce07dd7c KR	213
9eb73722 KR	214	/* used when a bfd supports several highly similar formats */
	215	enum {
	216	default_format = 0,
	217	gnu_encap_format } subformat;
	218
ce07dd7c KR	219	enum {
	220	undecided_magic = 0,
	221	z_magic,
	222	o_magic,
	223	n_magic } magic;
4c3721d5 ILT	224
	225	/* The external symbol information. */
	226	struct external_nlist *external_syms;
	227	bfd_size_type external_sym_count;
	228	char *external_strings;
	229	struct aout_link_hash_entry **sym_hashes;
0fa4f690	230	};
4a81b561	231
ce07dd7c KR	232	struct aout_data_struct {
	233	struct aoutdata a;
	234	struct internal_exec e;
	235	};
	236
	237	#define adata(bfd) ((bfd)->tdata.aout_data->a)
	238	#define exec_hdr(bfd) (adata(bfd).hdr)
	239	#define obj_aout_symbols(bfd) (adata(bfd).symbols)
	240	#define obj_textsec(bfd) (adata(bfd).textsec)
	241	#define obj_datasec(bfd) (adata(bfd).datasec)
	242	#define obj_bsssec(bfd) (adata(bfd).bsssec)
	243	#define obj_sym_filepos(bfd) (adata(bfd).sym_filepos)
	244	#define obj_str_filepos(bfd) (adata(bfd).str_filepos)
	245	#define obj_reloc_entry_size(bfd) (adata(bfd).reloc_entry_size)
	246	#define obj_symbol_entry_size(bfd) (adata(bfd).symbol_entry_size)
9eb73722	247	#define obj_aout_subformat(bfd) (adata(bfd).subformat)
4c3721d5 ILT	248	#define obj_aout_external_syms(bfd) (adata(bfd).external_syms)
	249	#define obj_aout_external_sym_count(bfd) (adata(bfd).external_sym_count)
	250	#define obj_aout_external_strings(bfd) (adata(bfd).external_strings)
	251	#define obj_aout_sym_hashes(bfd) (adata(bfd).sym_hashes)
69ebee86	252
0fa4f690 JG	253	/* We take the address of the first element of an asymbol to ensure that the
	254	macro is only ever applied to an asymbol */
	255	#define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd))
69ebee86	256
c0e5039e	257	/* Prototype declarations for functions defined in aoutx.h */
69ebee86	258
1f29e30b JG	259	boolean
1f29e30b JG	260	NAME(aout,squirt_out_relocs) PARAMS ((bfd abfd, asection section));
69ebee86	261
1f29e30b JG	262	bfd_target *
	263	NAME(aout,some_aout_object_p) PARAMS ((bfd *abfd,
	264	struct internal_exec *execp,
	265	bfd_target * (callback)(bfd )));
69ebee86	266
1f29e30b JG	267	boolean
	268	NAME(aout,mkobject) PARAMS ((bfd *abfd));
	269
	270	enum machine_type
	271	NAME(aout,machine_type) PARAMS ((enum bfd_architecture arch,
	272	unsigned long machine));
	273
	274	boolean
	275	NAME(aout,set_arch_mach) PARAMS ((bfd *abfd, enum bfd_architecture arch,
	276	unsigned long machine));
	277
	278	boolean
	279	NAME(aout,new_section_hook) PARAMS ((bfd abfd, asection newsect));
	280
	281	boolean
	282	NAME(aout,set_section_contents) PARAMS ((bfd *abfd, sec_ptr section,
c0e5039e JG	283	PTR location, file_ptr offset, bfd_size_type count));
c0e5039e JG	284
1f29e30b JG	285	asymbol *
	286	NAME(aout,make_empty_symbol) PARAMS ((bfd *abfd));
	287
	288	boolean
	289	NAME(aout,slurp_symbol_table) PARAMS ((bfd *abfd));
	290
4c3721d5	291	boolean
1f29e30b JG	292	NAME(aout,write_syms) PARAMS ((bfd *abfd));
	293
	294	void
	295	NAME(aout,reclaim_symbol_table) PARAMS ((bfd *abfd));
	296
	297	unsigned int
	298	NAME(aout,get_symtab_upper_bound) PARAMS ((bfd *abfd));
	299
	300	unsigned int
	301	NAME(aout,get_symtab) PARAMS ((bfd abfd, asymbol *location));
	302
	303	boolean
	304	NAME(aout,slurp_reloc_table) PARAMS ((bfd *abfd, sec_ptr asect,
	305	asymbol **symbols));
	306
	307	unsigned int
	308	NAME(aout,canonicalize_reloc) PARAMS ((bfd *abfd, sec_ptr section,
	309	arelent relptr, asymbol symbols));
	310
	311	unsigned int
	312	NAME(aout,get_reloc_upper_bound) PARAMS ((bfd *abfd, sec_ptr asect));
	313
	314	void
	315	NAME(aout,reclaim_reloc) PARAMS ((bfd *ignore_abfd, sec_ptr ignore));
	316
	317	alent *
	318	NAME(aout,get_lineno) PARAMS ((bfd ignore_abfd, asymbol ignore_symbol));
	319
	320	void
	321	NAME(aout,print_symbol) PARAMS ((bfd *ignore_abfd, PTR file,
9e2dad8e	322	asymbol *symbol, bfd_print_symbol_type how));
1f29e30b	323
c2623b7d KR	324	void
	325	NAME(aout,get_symbol_info) PARAMS ((bfd *ignore_abfd,
	326	asymbol symbol, symbol_info ret));
	327
1f29e30b JG	328	boolean
	329	NAME(aout,close_and_cleanup) PARAMS ((bfd *abfd));
	330
	331	boolean
	332	NAME(aout,find_nearest_line) PARAMS ((bfd abfd, asection section,
69ebee86 JG	333	asymbol symbols, bfd_vma offset, CONST char filename_ptr,
69ebee86 JG	334	CONST char *functionname_ptr, unsigned int line_ptr));
69ebee86	335
1f29e30b JG	336	int
	337	NAME(aout,sizeof_headers) PARAMS ((bfd *abfd, boolean exec));
	338
	339	boolean
	340	NAME(aout,adjust_sizes_and_vmas) PARAMS ((bfd *abfd,
	341	bfd_size_type text_size, file_ptr text_end));
	342
	343	void
	344	NAME(aout,swap_exec_header_in) PARAMS ((bfd *abfd,
	345	struct external_exec raw_bytes, struct internal_exec execp));
69ebee86	346
1f29e30b JG	347	void
	348	NAME(aout,swap_exec_header_out) PARAMS ((bfd *abfd,
	349	struct internal_exec execp, struct external_exec raw_bytes));
69ebee86	350
4c3721d5 ILT	351	struct bfd_link_hash_table *
	352	NAME(aout,link_hash_table_create) PARAMS ((bfd *));
	353
	354	boolean
	355	NAME(aout,link_add_symbols) PARAMS ((bfd , struct bfd_link_info ));
	356
	357	boolean
	358	NAME(aout,final_link) PARAMS ((bfd , struct bfd_link_info ,
	359	void () (bfd , file_ptr , file_ptr ,
	360	file_ptr *)));
	361
7de245d3 PB	362	/* Prototypes for functions in stab-syms.c. */
7de245d3 PB	363
9eb73722	364	CONST char *
1f29e30b	365	aout_stab_name PARAMS ((int code));
7de245d3	366
69ebee86 JG	367	/* A.out uses the generic versions of these routines... */
69ebee86 JG	368
c0e5039e JG	369	#define aout_32_get_section_contents bfd_generic_get_section_contents
	370	#define aout_32_close_and_cleanup bfd_generic_close_and_cleanup
	371
	372	#define aout_64_get_section_contents bfd_generic_get_section_contents
	373	#define aout_64_close_and_cleanup bfd_generic_close_and_cleanup
ce07dd7c KR	374	#ifndef NO_WRITE_HEADER_KLUDGE
	375	#define NO_WRITE_HEADER_KLUDGE 0
	376	#endif
c0e5039e	377
ce07dd7c	378	#ifndef WRITE_HEADERS
c0e5039e JG	379	#define WRITE_HEADERS(abfd, execp) \
c0e5039e JG	380	{ \
ce07dd7c KR	381	bfd_size_type text_size; /* dummy vars */ \
	382	file_ptr text_end; \
	383	if (adata(abfd).magic == undecided_magic) \
	384	NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); \
c0e5039e	385	\
0fa4f690	386	execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \
c0e5039e JG	387	execp->a_entry = bfd_get_start_address (abfd); \
	388	\
	389	execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \
	390	obj_reloc_entry_size (abfd)); \
	391	execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \
	392	obj_reloc_entry_size (abfd)); \
	393	NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); \
	394	\
f8e01940	395	bfd_seek (abfd, (file_ptr) 0, SEEK_SET); \
c0e5039e JG	396	bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd); \
	397	/* Now write out reloc info, followed by syms and strings */ \
	398	\
4c3721d5 ILT	399	if (bfd_get_outsymbols (abfd) != (asymbol **) NULL \
4c3721d5 ILT	400	&& bfd_get_symcount (abfd) != 0) \
c0e5039e	401	{ \
f8e01940	402	bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET); \
c0e5039e	403	\
4c3721d5	404	if (! NAME(aout,write_syms)(abfd)) return false; \
c0e5039e	405	\
f8e01940	406	bfd_seek (abfd, (file_ptr)(N_TRELOFF(*execp)), SEEK_SET); \
c0e5039e JG	407	\
c0e5039e JG	408	if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) return false; \
f8e01940	409	bfd_seek (abfd, (file_ptr)(N_DRELOFF(*execp)), SEEK_SET); \
c0e5039e JG	410	\
	411	if (!NAME(aout,squirt_out_relocs)(abfd, obj_datasec (abfd))) return false; \
	412	} \
	413	}
ce07dd7c	414	#endif