2 Copyright (C) 1994, 95, 1997 Free Software Foundation, Inc.
4 This file is part of GNU Binutils.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
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.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20 /* Written by Steve Chamberlain (sac@cygnus.com)
22 This module reads a coff file and builds a really simple type tree
23 which can be read by other programs. The first application is a
24 coff->sysroff converter. It can be tested with coffdump.c.
31 #include "coff/internal.h"
32 #include "../bfd/libcoff.h"
35 static struct coff_scope
*top_scope
;
36 static struct coff_scope
*file_scope
;
37 static struct coff_ofile
*ofile
;
39 struct coff_symbol
*last_function_symbol
;
40 struct coff_type
*last_function_type
;
41 struct coff_type
*last_struct
;
42 struct coff_type
*last_enum
;
43 struct coff_sfile
*cur_sfile
;
45 static struct coff_symbol
**tindex
;
48 static asymbol
**syms
;
51 #define N(x) ((x)->_n._n_nptr[1])
53 static struct coff_ptr_struct
*rawsyms
;
56 extern char *xcalloc ();
64 #define INDEXOF(p) ((struct coff_ptr_struct *)(p)-(rawsyms))
66 static struct coff_scope
*
70 l
= (struct coff_scope
*) (xcalloc (sizeof (struct coff_scope
), 1));
74 static struct coff_symbol
*
77 return (struct coff_symbol
*) (xcalloc (sizeof (struct coff_symbol
), 1));
85 struct coff_scope
*n
= empty_scope ();
90 if (top_scope
->list_tail
)
92 top_scope
->list_tail
->next
= n
;
96 top_scope
->list_head
= n
;
98 top_scope
->list_tail
= n
;
101 n
->parent
= top_scope
;
109 top_scope
= top_scope
->parent
;
113 do_sections_p1 (head
)
114 struct coff_ofile
*head
;
118 struct coff_section
*all
= (struct coff_section
*) (xcalloc (abfd
->section_count
+ 1,
119 sizeof (struct coff_section
)));
120 head
->nsections
= abfd
->section_count
+ 1;
121 head
->sections
= all
;
123 for (idx
= 0, section
= abfd
->sections
; section
; section
= section
->next
, idx
++)
126 int i
= section
->target_index
;
130 relsize
= bfd_get_reloc_upper_bound (abfd
, section
);
132 bfd_fatal (bfd_get_filename (abfd
));
135 relpp
= (arelent
**) xmalloc (relsize
);
136 relcount
= bfd_canonicalize_reloc (abfd
, section
, relpp
, syms
);
138 bfd_fatal (bfd_get_filename (abfd
));
140 head
->sections
[i
].name
= (char *) (section
->name
);
141 head
->sections
[i
].code
= section
->flags
& SEC_CODE
;
142 head
->sections
[i
].data
= section
->flags
& SEC_DATA
;
143 if (strcmp (section
->name
, ".bss") == 0)
144 head
->sections
[i
].data
= 1;
145 head
->sections
[i
].address
= section
->lma
;
146 head
->sections
[i
].size
= section
->_raw_size
;
147 head
->sections
[i
].number
= idx
;
148 head
->sections
[i
].nrelocs
= section
->reloc_count
;
149 head
->sections
[i
].relocs
=
150 (struct coff_reloc
*) (xcalloc (section
->reloc_count
,
151 sizeof (struct coff_reloc
)));
152 head
->sections
[i
].bfd_section
= section
;
154 head
->sections
[0].name
= "ABSOLUTE";
155 head
->sections
[0].code
= 0;
156 head
->sections
[0].data
= 0;
157 head
->sections
[0].address
= 0;
158 head
->sections
[0].size
= 0;
159 head
->sections
[0].number
= 0;
163 do_sections_p2 (head
)
164 struct coff_ofile
*head
;
167 for (section
= abfd
->sections
; section
; section
= section
->next
)
170 for (j
= 0; j
< section
->reloc_count
; j
++)
173 int i
= section
->target_index
;
174 struct coff_reloc
*r
= head
->sections
[i
].relocs
+ j
;
175 arelent
*sr
= section
->relocation
+ j
;
176 r
->offset
= sr
->address
;
177 r
->addend
= sr
->addend
;
178 idx
= ((coff_symbol_type
*) (sr
->sym_ptr_ptr
[0]))->native
- rawsyms
;
179 r
->symbol
= tindex
[idx
];
184 static struct coff_where
*
188 struct internal_syment
*sym
= &rawsyms
[i
].u
.syment
;
189 struct coff_where
*where
=
190 (struct coff_where
*) (xmalloc (sizeof (struct coff_where
)));
191 where
->offset
= sym
->n_value
;
193 if (sym
->n_scnum
== -1)
196 switch (sym
->n_sclass
)
199 where
->where
= coff_where_member_of_struct
;
200 where
->offset
= sym
->n_value
/ 8;
201 where
->bitoffset
= sym
->n_value
% 8;
202 where
->bitsize
= rawsyms
[i
+ 1].u
.auxent
.x_sym
.x_misc
.x_lnsz
.x_size
;
205 where
->where
= coff_where_member_of_enum
;
209 where
->where
= coff_where_member_of_struct
;
213 where
->where
= coff_where_stack
;
219 where
->where
= coff_where_memory
;
220 where
->section
= &ofile
->sections
[sym
->n_scnum
];
224 where
->where
= coff_where_register
;
227 where
->where
= coff_where_entag
;
231 where
->where
= coff_where_strtag
;
234 where
->where
= coff_where_typedef
;
249 struct coff_line
*res
= (struct coff_line
*) xcalloc (sizeof (struct coff_line
), 1);
252 /* Find out if this function has any line numbers in the table */
253 for (s
= abfd
->sections
; s
; s
= s
->next
)
255 for (l
= 0; l
< s
->lineno_count
; l
++)
257 if (s
->lineno
[l
].line_number
== 0)
259 if (rawsyms
+ i
== ((coff_symbol_type
*) (&(s
->lineno
[l
].u
.sym
[0])))->native
)
261 /* These lines are for this function - so count them and stick them on */
263 /* Find the linenumber of the top of the function, since coff linenumbers
264 are relative to the start of the function. */
265 int start_line
= rawsyms
[i
+ 3].u
.auxent
.x_sym
.x_misc
.x_lnsz
.x_lnno
;
268 for (c
= 0; s
->lineno
[l
+ c
+ 1].line_number
; c
++)
271 /* Add two extra records, one for the prologue and one for the epilogue */
274 res
->lines
= (int *) (xcalloc (sizeof (int), c
));
275 res
->addresses
= (int *) (xcalloc (sizeof (int), c
));
276 res
->lines
[0] = start_line
;
277 res
->addresses
[0] = rawsyms
[i
].u
.syment
.n_value
- s
->vma
;
278 for (c
= 0; s
->lineno
[l
+ c
+ 1].line_number
; c
++)
280 res
->lines
[c
+ 1] = s
->lineno
[l
+ c
].line_number
+ start_line
- 1;
281 res
->addresses
[c
+ 1] = s
->lineno
[l
+ c
].u
.offset
;
296 struct internal_syment
*sym
= &rawsyms
[i
].u
.syment
;
297 union internal_auxent
*aux
= &rawsyms
[i
+ 1].u
.auxent
;
298 struct coff_type
*res
=
299 (struct coff_type
*) xmalloc (sizeof (struct coff_type
));
300 int type
= sym
->n_type
;
304 res
->type
= coff_basic_type
;
305 res
->u
.basic
= type
& 0xf;
311 if (sym
->n_numaux
&& sym
->n_sclass
== C_STAT
)
313 /* This is probably a section definition */
314 res
->type
= coff_secdef_type
;
315 res
->size
= aux
->x_scn
.x_scnlen
;
321 /* Don't know what this is, let's make it a simple int */
322 res
->size
= INT_SIZE
;
323 res
->u
.basic
= T_UINT
;
327 /* Else it could be a function or pointer to void */
341 res
->size
= SHORT_SIZE
;
345 res
->size
= INT_SIZE
;
349 res
->size
= LONG_SIZE
;
352 res
->size
= FLOAT_SIZE
;
355 res
->size
= DOUBLE_SIZE
;
361 if (aux
->x_sym
.x_tagndx
.p
)
363 /* Refering to a struct defined elsewhere */
364 res
->type
= coff_structref_type
;
365 res
->u
.astructref
.ref
= tindex
[INDEXOF (aux
->x_sym
.x_tagndx
.p
)];
366 res
->size
= res
->u
.astructref
.ref
?
367 res
->u
.astructref
.ref
->type
->size
: 0;
371 /* A definition of a struct */
373 res
->type
= coff_structdef_type
;
374 res
->u
.astructdef
.elements
= empty_scope ();
375 res
->u
.astructdef
.idx
= 0;
376 res
->u
.astructdef
.isstruct
= (type
& 0xf) == T_STRUCT
;
377 res
->size
= aux
->x_sym
.x_misc
.x_lnsz
.x_size
;
382 /* No auxents - it's anonynmous */
383 res
->type
= coff_structref_type
;
384 res
->u
.astructref
.ref
= 0;
389 if (aux
->x_sym
.x_tagndx
.p
)
391 /* Refering to a enum defined elsewhere */
392 res
->type
= coff_enumref_type
;
393 res
->u
.aenumref
.ref
= tindex
[INDEXOF (aux
->x_sym
.x_tagndx
.p
)];
394 res
->size
= res
->u
.aenumref
.ref
->type
->size
;
398 /* A definition of an enum */
400 res
->type
= coff_enumdef_type
;
401 res
->u
.aenumdef
.elements
= empty_scope ();
402 res
->size
= aux
->x_sym
.x_misc
.x_lnsz
.x_size
;
409 for (which_dt
= 5; which_dt
>= 0; which_dt
--)
411 switch ((type
>> ((which_dt
* 2) + 4)) & 0x3)
417 struct coff_type
*ptr
= ((struct coff_type
*)
418 xmalloc (sizeof (struct coff_type
)));
419 int els
= (dimind
< DIMNUM
420 ? aux
->x_sym
.x_fcnary
.x_ary
.x_dimen
[dimind
]
423 ptr
->type
= coff_array_type
;
424 ptr
->size
= els
* res
->size
;
425 ptr
->u
.array
.dim
= els
;
426 ptr
->u
.array
.array_of
= res
;
432 struct coff_type
*ptr
=
433 (struct coff_type
*) xmalloc (sizeof (struct coff_type
));
434 ptr
->size
= PTR_SIZE
;
435 ptr
->type
= coff_pointer_type
;
436 ptr
->u
.pointer
.points_to
= res
;
442 struct coff_type
*ptr
443 = (struct coff_type
*) xmalloc (sizeof (struct coff_type
));
445 ptr
->type
= coff_function_type
;
446 ptr
->u
.function
.function_returns
= res
;
447 ptr
->u
.function
.parameters
= empty_scope ();
448 ptr
->u
.function
.lines
= do_lines (i
, sym
->_n
._n_nptr
[1]);
449 ptr
->u
.function
.code
= 0;
450 last_function_type
= ptr
;
459 static struct coff_visible
*
463 struct internal_syment
*sym
= &rawsyms
[i
].u
.syment
;
464 struct coff_visible
*visible
=
465 (struct coff_visible
*) (xmalloc (sizeof (struct coff_visible
)));
466 enum coff_vis_type t
;
467 switch (sym
->n_sclass
)
472 t
= coff_vis_member_of_struct
;
475 t
= coff_vis_member_of_enum
;
479 t
= coff_vis_regparam
;
483 t
= coff_vis_register
;
493 t
= coff_vis_autoparam
;
502 t
= coff_vis_int_def
;
505 if (sym
->n_scnum
== N_UNDEF
)
510 t
= coff_vis_ext_ref
;
513 t
= coff_vis_ext_def
;
527 struct coff_scope
*b
;
529 static int symbol_index
;
530 struct internal_syment
*sym
= &rawsyms
[i
].u
.syment
;
532 /* Define a symbol and attach to block b */
533 struct coff_symbol
*s
= empty_symbol ();
535 s
->number
= ++symbol_index
;
536 s
->name
= sym
->_n
._n_nptr
[1];
537 s
->sfile
= cur_sfile
;
538 /* Glue onto the ofile list */
541 if (ofile
->symbol_list_tail
)
542 ofile
->symbol_list_tail
->next_in_ofile_list
= s
;
544 ofile
->symbol_list_head
= s
;
545 ofile
->symbol_list_tail
= s
;
546 /* And the block list */
549 b
->vars_tail
->next
= s
;
555 s
->type
= do_type (i
);
556 s
->where
= do_where (i
);
557 s
->visible
= do_visible (i
);
561 /* We remember the lowest address in each section for each source file */
563 if (s
->where
->where
== coff_where_memory
564 && s
->type
->type
== coff_secdef_type
)
566 struct coff_isection
*is
= cur_sfile
->section
+ s
->where
->section
->number
;
570 is
->low
= s
->where
->offset
;
571 is
->high
= s
->where
->offset
+ s
->type
->size
;
573 is
->parent
= s
->where
->section
;
578 if (s
->type
->type
== coff_function_type
)
579 last_function_symbol
= s
;
581 return i
+ sym
->n_numaux
+ 1;
591 struct coff_ofile
*head
=
592 (struct coff_ofile
*) xmalloc (sizeof (struct coff_ofile
));
594 head
->source_head
= 0;
595 head
->source_tail
= 0;
597 head
->symbol_list_tail
= 0;
598 head
->symbol_list_head
= 0;
599 do_sections_p1 (head
);
602 for (i
= 0; i
< rawcount
;)
604 struct internal_syment
*sym
= &rawsyms
[i
].u
.syment
;
605 switch (sym
->n_sclass
)
609 /* new source file announced */
610 struct coff_sfile
*n
=
611 (struct coff_sfile
*) xmalloc (sizeof (struct coff_sfile
));
612 n
->section
= (struct coff_isection
*) xcalloc (sizeof (struct coff_isection
), abfd
->section_count
+ 1);
614 n
->name
= sym
->_n
._n_nptr
[1];
623 file_scope
= n
->scope
= top_scope
;
625 if (head
->source_tail
)
626 head
->source_tail
->next
= n
;
628 head
->source_head
= n
;
629 head
->source_tail
= n
;
631 i
+= sym
->n_numaux
+ 1;
636 char *name
= sym
->_n
._n_nptr
[1];
641 last_function_type
->u
.function
.code
= top_scope
;
642 top_scope
->sec
= ofile
->sections
+ sym
->n_scnum
;
643 top_scope
->offset
= sym
->n_value
;
647 top_scope
->size
= sym
->n_value
- top_scope
->offset
+ 1;
651 i
+= sym
->n_numaux
+ 1;
657 char *name
= sym
->_n
._n_nptr
[1];
662 top_scope
->sec
= ofile
->sections
+ sym
->n_scnum
;
663 top_scope
->offset
= sym
->n_value
;
668 top_scope
->size
= sym
->n_value
- top_scope
->offset
+ 1;
671 i
+= sym
->n_numaux
+ 1;
676 i
= do_define (i
, last_function_symbol
->type
->u
.function
.parameters
);
681 i
= do_define (i
, last_struct
->u
.astructdef
.elements
);
684 i
= do_define (i
, last_enum
->u
.aenumdef
.elements
);
689 /* Various definition */
690 i
= do_define (i
, top_scope
);
694 i
= do_define (i
, file_scope
);
700 i
= do_define (i
, top_scope
);
705 i
+= sym
->n_numaux
+ 1;
709 do_sections_p2 (head
);
718 struct coff_ofile
*p
;
720 storage
= bfd_get_symtab_upper_bound (abfd
);
723 bfd_fatal (abfd
->filename
);
725 syms
= (asymbol
**) xmalloc (storage
);
726 symcount
= bfd_canonicalize_symtab (abfd
, syms
);
728 bfd_fatal (abfd
->filename
);
729 rawsyms
= obj_raw_syments (abfd
);
730 rawcount
= obj_raw_syment_count (abfd
);;
731 tindex
= (struct coff_symbol
**) (xcalloc (sizeof (struct coff_symbol
*), rawcount
));