6c7eea9974a2d0ddfacc4fd4223314168022b598
[deliverable/binutils-gdb.git] / bfd / coffcode.h
1 /* Support for the generic parts of most COFF variants, for BFD.
2 Copyright (C) 1990-1991 Free Software Foundation, Inc.
3 Written by Cygnus Support.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program 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 of the License, or
10 (at your option) any later version.
11
12 This program 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 this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
20
21 /*
22 Most of this hacked by Steve Chamberlain,
23 sac@cygnus.com
24 */
25 /*
26
27 SECTION
28 coff backends
29
30 BFD supports a number of different flavours of coff format.
31 The major difference between formats are the sizes and
32 alignments of fields in structures on disk, and the occasional
33 extra field.
34
35 Coff in all its varieties is implimented with a few common
36 files and a number of implementation specific files. For
37 example, The 88k bcs coff format is implemented in the file
38 @code{coff-m88k.c}. This file @code{#include}s
39 @code{coff-m88k.h} which defines the external structure of the
40 coff format for the 88k, and @code{internalcoff.h} which
41 defines the internal structure. @code{coff-m88k.c} also
42 defines pthe relocations used by the 88k format
43 @xref{Relocations}. Then the major portion of coff code is
44 included (@code{coffcode.h}) which defines the methods used to
45 act upon the types defined in @code{coff-m88k.h} and
46 @code{internalcoff.h}.
47
48
49 The Intel i960 processor version of coff is implemented in
50 @code{coff-i960.c}. This file has the same structure as
51 @code{coff-m88k.c}, except that it includes @code{coff-i960.h}
52 rather than @code{coff-m88k.h}.
53
54 SUBSECTION
55 Porting To A New Version of Coff
56
57 The recommended method is to select from the existing
58 implimentations the version of coff which is most like the one
59 you want to use, for our purposes, we'll say that i386 coff is
60 the one you select, and that your coff flavour is called foo.
61 Copy the @code{i386coff.c} to @code{foocoff.c}, copy
62 @code{../include/i386coff.h} to @code{../include/foocoff.h}
63 and add the lines to @code{targets.c} and @code{Makefile.in}
64 so that your new back end is used. Alter the shapes of the
65 structures in @code{../include/foocoff.h} so that they match
66 what you need. You will probably also have to add
67 @code{#ifdef}s to the code in @code{internalcoff.h} and
68 @code{coffcode.h} if your version of coff is too wild.
69
70 You can verify that your new BFD backend works quite simply by
71 building @code{objdump} from the @code{binutils} directory,
72 and making sure that its version of what's going on at your
73 host systems idea (assuming it has the pretty standard coff
74 dump utility (usually called @code{att-dump} or just
75 @code{dump})) are the same. Then clean up your code, and send
76 what you've done to Cygnus. Then your stuff will be in the
77 next release, and you won't have to keep integrating it.
78
79 SUBSECTION
80 How The Coff Backend Works
81
82 SUBSUBSECTION
83 Bit Twiddling
84
85 Each flavour of coff supported in BFD has its own header file
86 descibing the external layout of the structures. There is also
87 an internal description of the coff layout (in
88 @code{internalcoff.h}) file (@code{}). A major function of the
89 coff backend is swapping the bytes and twiddling the bits to
90 translate the external form of the structures into the normal
91 internal form. This is all performed in the
92 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some
93 elements are different sizes between different versions of
94 coff, it is the duty of the coff version specific include file
95 to override the definitions of various packing routines in
96 @code{coffcode.h}. Eg the size of line number entry in coff is
97 sometimes 16 bits, and sometimes 32 bits. @code{#define}ing
98 @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the
99 correct one. No doubt, some day someone will find a version of
100 coff which has a varying field size not catered for at the
101 moment. To port BFD, that person will have to add more @code{#defines}.
102 Three of the bit twiddling routines are exported to
103 @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in}
104 and @code{coff_swap_linno_in}. @code{GDB} reads the symbol
105 table on its own, but uses BFD to fix things up. More of the
106 bit twiddlers are exported for @code{gas};
107 @code{coff_swap_aux_out}, @code{coff_swap_sym_out},
108 @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out},
109 @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out},
110 @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track
111 of all the symbol table and reloc drudgery itself, thereby
112 saving the internal BFD overhead, but uses BFD to swap things
113 on the way out, making cross ports much safer. This also
114 allows BFD (and thus the linker) to use the same header files
115 as @code{gas}, which makes one avenue to disaster disappear.
116
117 SUBSUBSECTION
118 Symbol Reading
119
120 The simple canonical form for symbols used by BFD is not rich
121 enough to keep all the information available in a coff symbol
122 table. The back end gets around this by keeping the original
123 symbol table around, "behind the scenes".
124
125 When a symbol table is requested (through a call to
126 @code{bfd_canonicalize_symtab}, a request gets through to
127 @code{get_normalized_symtab}. This reads the symbol table from
128 the coff file and swaps all the structures inside into the
129 internal form. It also fixes up all the pointers in the table
130 (represented in the file by offsets from the first symbol in
131 the table) into physical pointers to elements in the new
132 internal table. This involves some work since the meanings of
133 fields changes depending upon context; a field that is a
134 pointer to another structure in the symbol table at one moment
135 may be the size in bytes of a structure in the next. Another
136 pass is made over the table. All symbols which mark file names
137 (<<C_FILE>> symbols) are modified so that the internal
138 string points to the value in the auxent (the real filename)
139 rather than the normal text associated with the symbol
140 (@code{".file"}).
141
142 At this time the symbol names are moved around. Coff stores
143 all symbols less than nine characters long physically
144 within the symbol table, longer strings are kept at the end of
145 the file in the string table. This pass moves all strings
146 into memory, and replaces them with pointers to the strings.
147
148
149 The symbol table is massaged once again, this time to create
150 the canonical table used by the BFD application. Each symbol
151 is inspected in turn, and a decision made (using the
152 @code{sclass} field) about the various flags to set in the
153 @code{asymbol} @xref{Symbols}. The generated canonical table
154 shares strings with the hidden internal symbol table.
155
156 Any linenumbers are read from the coff file too, and attached
157 to the symbols which own the functions the linenumbers belong to.
158
159 SUBSUBSECTION
160 Symbol Writing
161
162 Writing a symbol to a coff file which didn't come from a coff
163 file will lose any debugging information. The @code{asymbol}
164 structure remembers the BFD from which was born, and on output
165 the back end makes sure that the same destination target as
166 source target is present.
167
168 When the symbols have come from a coff file then all the
169 debugging information is preserved.
170
171 Symbol tables are provided for writing to the back end in a
172 vector of pointers to pointers. This allows applications like
173 the linker to accumulate and output large symbol tables
174 without having to do too much byte copying.
175
176 This function runs through the provided symbol table and
177 patches each symbol marked as a file place holder
178 (@code{C_FILE}) to point to the next file place holder in the
179 list. It also marks each @code{offset} field in the list with
180 the offset from the first symbol of the current symbol.
181
182 Another function of this procedure is to turn the canonical
183 value form of BFD into the form used by coff. Internally, BFD
184 expects symbol values to be offsets from a section base; so a
185 symbol physically at 0x120, but in a section starting at
186 0x100, would have the value 0x20. Coff expects symbols to
187 contain their final value, so symbols have their values
188 changed at this point to reflect their sum with their owning
189 section. Note that this transformation uses the
190 <<output_section>> field of the @code{asymbol}'s
191 @code{asection} @xref{Sections}.
192
193 o coff_mangle_symbols
194
195 This routine runs though the provided symbol table and uses
196 the offsets generated by the previous pass and the pointers
197 generated when the symbol table was read in to create the
198 structured hierachy required by coff. It changes each pointer
199 to a symbol to an index into the symbol table of the symbol
200 being referenced.
201
202 o coff_write_symbols
203
204 This routine runs through the symbol table and patches up the
205 symbols from their internal form into the coff way, calls the
206 bit twiddlers and writes out the tabel to the file.
207
208 */
209
210 /*
211 INTERNAL_DEFINITION
212 coff_symbol_type
213
214 DESCRIPTION
215 The hidden information for an asymbol is described in a
216 coff_ptr_struct, which is typedefed to a combined_entry_type
217
218 CODE_FRAGMENT
219 .
220 .typedef struct coff_ptr_struct
221 .{
222 .
223 . {* Remembers the offset from the first symbol in the file for
224 . this symbol. Generated by coff_renumber_symbols. *}
225 .unsigned int offset;
226 .
227 . {* Should the tag field of this symbol be renumbered.
228 . Created by coff_pointerize_aux. *}
229 .char fix_tag;
230 .
231 . {* Should the endidx field of this symbol be renumbered.
232 . Created by coff_pointerize_aux. *}
233 .char fix_end;
234 .
235 . {* The container for the symbol structure as read and translated
236 . from the file. *}
237 .
238 .union {
239 . union internal_auxent auxent;
240 . struct internal_syment syment;
241 . } u;
242 .} combined_entry_type;
243 .
244 .
245 .{* Each canonical asymbol really looks like this: *}
246 .
247 .typedef struct coff_symbol_struct
248 .{
249 . {* The actual symbol which the rest of BFD works with *}
250 .asymbol symbol;
251 .
252 . {* A pointer to the hidden information for this symbol *}
253 .combined_entry_type *native;
254 .
255 . {* A pointer to the linenumber information for this symbol *}
256 .struct lineno_cache_entry *lineno;
257 .
258 . {* Have the line numbers been relocated yet ? *}
259 .boolean done_lineno;
260 .} coff_symbol_type;
261
262
263 */
264
265 #include "seclet.h"
266 extern bfd_error_vector_type bfd_error_vector;
267
268
269
270
271 #define PUTWORD bfd_h_put_32
272 #define PUTHALF bfd_h_put_16
273 #define PUTBYTE bfd_h_put_8
274
275 #ifndef GET_FCN_LNNOPTR
276 #define GET_FCN_LNNOPTR(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_lnnoptr)
277 #endif
278
279 #ifndef GET_FCN_ENDNDX
280 #define GET_FCN_ENDNDX(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_endndx)
281 #endif
282
283 #ifndef PUT_FCN_LNNOPTR
284 #define PUT_FCN_LNNOPTR(abfd, in, ext) PUTWORD(abfd, in, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_lnnoptr)
285 #endif
286 #ifndef PUT_FCN_ENDNDX
287 #define PUT_FCN_ENDNDX(abfd, in, ext) PUTWORD(abfd, in, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_endndx)
288 #endif
289 #ifndef GET_LNSZ_LNNO
290 #define GET_LNSZ_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_lnno)
291 #endif
292 #ifndef GET_LNSZ_SIZE
293 #define GET_LNSZ_SIZE(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_size)
294 #endif
295 #ifndef PUT_LNSZ_LNNO
296 #define PUT_LNSZ_LNNO(abfd, in, ext) bfd_h_put_16(abfd, in, (bfd_byte *)ext->x_sym.x_misc.x_lnsz.x_lnno)
297 #endif
298 #ifndef PUT_LNSZ_SIZE
299 #define PUT_LNSZ_SIZE(abfd, in, ext) bfd_h_put_16(abfd, in, (bfd_byte*) ext->x_sym.x_misc.x_lnsz.x_size)
300 #endif
301 #ifndef GET_SCN_SCNLEN
302 #define GET_SCN_SCNLEN(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_scnlen)
303 #endif
304 #ifndef GET_SCN_NRELOC
305 #define GET_SCN_NRELOC(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *)ext->x_scn.x_nreloc)
306 #endif
307 #ifndef GET_SCN_NLINNO
308 #define GET_SCN_NLINNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *)ext->x_scn.x_nlinno)
309 #endif
310 #ifndef PUT_SCN_SCNLEN
311 #define PUT_SCN_SCNLEN(abfd,in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_scn.x_scnlen)
312 #endif
313 #ifndef PUT_SCN_NRELOC
314 #define PUT_SCN_NRELOC(abfd,in, ext) bfd_h_put_16(abfd, in, (bfd_byte *)ext->x_scn.x_nreloc)
315 #endif
316 #ifndef PUT_SCN_NLINNO
317 #define PUT_SCN_NLINNO(abfd,in, ext) bfd_h_put_16(abfd,in, (bfd_byte *) ext->x_scn.x_nlinno)
318 #endif
319 #ifndef GET_LINENO_LNNO
320 #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) (ext->l_lnno));
321 #endif
322 #ifndef PUT_LINENO_LNNO
323 #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_16(abfd,val, (bfd_byte *) (ext->l_lnno));
324 #endif
325
326 \f
327 /* void warning(); */
328
329 /*
330 * Return a word with STYP_* (scnhdr.s_flags) flags set to represent the
331 * incoming SEC_* flags. The inverse of this function is styp_to_sec_flags().
332 * NOTE: If you add to/change this routine, you should mirror the changes
333 * in styp_to_sec_flags().
334 */
335 static long
336 DEFUN(sec_to_styp_flags, (sec_name, sec_flags),
337 CONST char * sec_name AND
338 flagword sec_flags)
339 {
340 long styp_flags = 0;
341
342 if (!strcmp(sec_name, _TEXT)) {
343 return((long)STYP_TEXT);
344 } else if (!strcmp(sec_name, _DATA)) {
345 return((long)STYP_DATA);
346 } else if (!strcmp(sec_name, _BSS)) {
347 return((long)STYP_BSS);
348 #ifdef _COMMENT
349 } else if (!strcmp(sec_name, _COMMENT)) {
350 return((long)STYP_INFO);
351 #endif /* _COMMENT */
352 }
353
354 /* Try and figure out what it should be */
355 if (sec_flags & SEC_CODE) styp_flags = STYP_TEXT;
356 if (sec_flags & SEC_DATA) styp_flags = STYP_DATA;
357 else if (sec_flags & SEC_READONLY)
358 #ifdef STYP_LIT /* 29k readonly text/data section */
359 styp_flags = STYP_LIT;
360 #else
361 styp_flags = STYP_TEXT;
362 #endif /* STYP_LIT */
363 else if (sec_flags & SEC_LOAD) styp_flags = STYP_TEXT;
364
365 if (styp_flags == 0) styp_flags = STYP_BSS;
366
367 return(styp_flags);
368 }
369 /*
370 * Return a word with SEC_* flags set to represent the incoming
371 * STYP_* flags (from scnhdr.s_flags). The inverse of this
372 * function is sec_to_styp_flags().
373 * NOTE: If you add to/change this routine, you should mirror the changes
374 * in sec_to_styp_flags().
375 */
376 static flagword
377 DEFUN(styp_to_sec_flags, (styp_flags),
378 long styp_flags)
379 {
380 flagword sec_flags=0;
381
382 if ((styp_flags & STYP_TEXT) || (styp_flags & STYP_DATA))
383 sec_flags = (SEC_LOAD | SEC_ALLOC);
384 else if (styp_flags & STYP_BSS)
385 sec_flags = SEC_ALLOC;
386
387 #ifdef STYP_LIT /* A29k readonly text/data section type */
388 if ((styp_flags & STYP_LIT) == STYP_LIT)
389 sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
390 #endif /* STYP_LIT */
391 #ifdef STYP_OTHER_LOAD /* Other loaded sections */
392 if (styp_flags & STYP_OTHER_LOAD)
393 sec_flags = (SEC_LOAD | SEC_ALLOC);
394 #endif /* STYP_SDATA */
395
396 return(sec_flags);
397 }
398
399 #define get_index(symbol) ((int) (symbol)->udata)
400 #define set_index(symbol, idx) ((symbol)->udata =(PTR) (idx))
401
402 /* **********************************************************************
403 Here are all the routines for swapping the structures seen in the
404 outside world into the internal forms.
405 */
406
407
408 static void
409 DEFUN(bfd_swap_reloc_in,(abfd, reloc_src, reloc_dst),
410 bfd *abfd AND
411 RELOC *reloc_src AND
412 struct internal_reloc *reloc_dst)
413 {
414 reloc_dst->r_vaddr = bfd_h_get_32(abfd, (bfd_byte *)reloc_src->r_vaddr);
415 reloc_dst->r_symndx = bfd_h_get_32(abfd, (bfd_byte *) reloc_src->r_symndx);
416
417 #ifdef RS6000COFF_C
418 reloc_dst->r_type = bfd_h_get_8(abfd, reloc_src->r_type);
419 reloc_dst->r_size = bfd_h_get_8(abfd, reloc_src->r_size);
420 #else
421 reloc_dst->r_type = bfd_h_get_16(abfd, (bfd_byte *) reloc_src->r_type);
422 #endif
423
424 #ifdef SWAP_IN_RELOC_OFFSET
425 reloc_dst->r_offset = SWAP_IN_RELOC_OFFSET(abfd,
426 (bfd_byte *) reloc_src->r_offset);
427 #endif
428 }
429
430
431 static unsigned int
432 DEFUN(coff_swap_reloc_out,(abfd, src, dst),
433 bfd *abfd AND
434 PTR src AND
435 PTR dst)
436 {
437 struct internal_reloc *reloc_src = (struct internal_reloc *)src;
438 struct external_reloc *reloc_dst = (struct external_reloc *)dst;
439 bfd_h_put_32(abfd, reloc_src->r_vaddr, (bfd_byte *) reloc_dst->r_vaddr);
440 bfd_h_put_32(abfd, reloc_src->r_symndx, (bfd_byte *) reloc_dst->r_symndx);
441 bfd_h_put_16(abfd, reloc_src->r_type, (bfd_byte *)
442 reloc_dst->r_type);
443
444 #ifdef SWAP_OUT_RELOC_OFFSET
445 SWAP_OUT_RELOC_OFFSET(abfd,
446 reloc_src->r_offset,
447 (bfd_byte *) reloc_dst->r_offset);
448 #endif
449 #ifdef SWAP_OUT_RELOC_EXTRA
450 SWAP_OUT_RELOC_EXTRA(abfd,reloc_src, reloc_dst);
451 #endif
452
453 return sizeof(struct external_reloc);
454 }
455
456 static void
457 DEFUN(bfd_swap_filehdr_in,(abfd, filehdr_src, filehdr_dst),
458 bfd *abfd AND
459 FILHDR *filehdr_src AND
460 struct internal_filehdr *filehdr_dst)
461 {
462 filehdr_dst->f_magic = bfd_h_get_16(abfd, (bfd_byte *) filehdr_src->f_magic);
463 filehdr_dst->f_nscns = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_nscns);
464 filehdr_dst->f_timdat = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_timdat);
465 filehdr_dst->f_symptr = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_symptr);
466 filehdr_dst->f_nsyms = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_nsyms);
467 filehdr_dst->f_opthdr = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_opthdr);
468 filehdr_dst->f_flags = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_flags);
469 }
470
471 static unsigned int
472 DEFUN(coff_swap_filehdr_out,(abfd, in, out),
473 bfd *abfd AND
474 PTR in AND
475 PTR out)
476 {
477 struct internal_filehdr *filehdr_in = (struct internal_filehdr *)in;
478 FILHDR *filehdr_out = (FILHDR *)out;
479 bfd_h_put_16(abfd, filehdr_in->f_magic, (bfd_byte *) filehdr_out->f_magic);
480 bfd_h_put_16(abfd, filehdr_in->f_nscns, (bfd_byte *) filehdr_out->f_nscns);
481 bfd_h_put_32(abfd, filehdr_in->f_timdat, (bfd_byte *) filehdr_out->f_timdat);
482 bfd_h_put_32(abfd, filehdr_in->f_symptr, (bfd_byte *) filehdr_out->f_symptr);
483 bfd_h_put_32(abfd, filehdr_in->f_nsyms, (bfd_byte *) filehdr_out->f_nsyms);
484 bfd_h_put_16(abfd, filehdr_in->f_opthdr, (bfd_byte *) filehdr_out->f_opthdr);
485 bfd_h_put_16(abfd, filehdr_in->f_flags, (bfd_byte *) filehdr_out->f_flags);
486 return sizeof(FILHDR);
487 }
488
489
490 #ifndef NO_COFF_SYMBOLS
491
492 static void
493 DEFUN(coff_swap_sym_in,(abfd, ext1, in1),
494 bfd *abfd AND
495 PTR ext1 AND
496 PTR in1)
497 {
498 SYMENT *ext = (SYMENT *)ext1;
499 struct internal_syment *in = (struct internal_syment *)in1;
500
501 if( ext->e.e_name[0] == 0) {
502 in->_n._n_n._n_zeroes = 0;
503 in->_n._n_n._n_offset = bfd_h_get_32(abfd, (bfd_byte *) ext->e.e.e_offset);
504 }
505 else {
506 #if SYMNMLEN != E_SYMNMLEN
507 -> Error, we need to cope with truncating or extending SYMNMLEN!;
508 #else
509 memcpy(in->_n._n_name, ext->e.e_name, SYMNMLEN);
510 #endif
511 }
512 in->n_value = bfd_h_get_32(abfd, (bfd_byte *) ext->e_value);
513 in->n_scnum = bfd_h_get_16(abfd, (bfd_byte *) ext->e_scnum);
514 if (sizeof(ext->e_type) == 2){
515 in->n_type = bfd_h_get_16(abfd, (bfd_byte *) ext->e_type);
516 }
517 else {
518 in->n_type = bfd_h_get_32(abfd, (bfd_byte *) ext->e_type);
519 }
520 in->n_sclass = bfd_h_get_8(abfd, ext->e_sclass);
521 in->n_numaux = bfd_h_get_8(abfd, ext->e_numaux);
522 }
523
524 static unsigned int
525 DEFUN(coff_swap_sym_out,(abfd, inp, extp),
526 bfd *abfd AND
527 PTR inp AND
528 PTR extp)
529 {
530 struct internal_syment *in = (struct internal_syment *)inp;
531 SYMENT *ext =(SYMENT *)extp;
532 if(in->_n._n_name[0] == 0) {
533 bfd_h_put_32(abfd, 0, (bfd_byte *) ext->e.e.e_zeroes);
534 bfd_h_put_32(abfd, in->_n._n_n._n_offset, (bfd_byte *) ext->e.e.e_offset);
535 }
536 else {
537 #if SYMNMLEN != E_SYMNMLEN
538 -> Error, we need to cope with truncating or extending SYMNMLEN!;
539 #else
540 memcpy(ext->e.e_name, in->_n._n_name, SYMNMLEN);
541 #endif
542 }
543 bfd_h_put_32(abfd, in->n_value , (bfd_byte *) ext->e_value);
544 bfd_h_put_16(abfd, in->n_scnum , (bfd_byte *) ext->e_scnum);
545 if (sizeof(ext->e_type) == 2)
546 {
547 bfd_h_put_16(abfd, in->n_type , (bfd_byte *) ext->e_type);
548 }
549 else
550 {
551 bfd_h_put_32(abfd, in->n_type , (bfd_byte *) ext->e_type);
552 }
553 bfd_h_put_8(abfd, in->n_sclass , ext->e_sclass);
554 bfd_h_put_8(abfd, in->n_numaux , ext->e_numaux);
555 return sizeof(SYMENT);
556 }
557
558 static void
559 DEFUN(coff_swap_aux_in,(abfd, ext1, type, class, in1),
560 bfd *abfd AND
561 PTR ext1 AND
562 int type AND
563 int class AND
564 PTR in1)
565 {
566 AUXENT *ext = (AUXENT *)ext1;
567 union internal_auxent *in = (union internal_auxent *)in1;
568
569 switch (class) {
570 case C_FILE:
571 if (ext->x_file.x_fname[0] == 0) {
572 in->x_file.x_n.x_zeroes = 0;
573 in->x_file.x_n.x_offset =
574 bfd_h_get_32(abfd, (bfd_byte *) ext->x_file.x_n.x_offset);
575 } else {
576 #if FILNMLEN != E_FILNMLEN
577 -> Error, we need to cope with truncating or extending FILNMLEN!;
578 #else
579 memcpy (in->x_file.x_fname, ext->x_file.x_fname, FILNMLEN);
580 #endif
581 }
582 break;
583
584 /* RS/6000 "csect" auxents */
585 #ifdef RS6000COFF_C
586 case C_EXT:
587 case C_HIDEXT:
588 in->x_csect.x_scnlen = bfd_h_get_32 (abfd, (bfd_byte *) ext->x_csect.x_scnlen);
589 in->x_csect.x_parmhash = bfd_h_get_32 (abfd, (bfd_byte *) ext->x_csect.x_parmhash);
590 in->x_csect.x_snhash = bfd_h_get_16 (abfd, (bfd_byte *) ext->x_csect.x_snhash);
591 /* We don't have to hack bitfields in x_smtyp because it's defined by
592 shifts-and-ands, which are equivalent on all byte orders. */
593 in->x_csect.x_smtyp = bfd_h_get_8 (abfd, (bfd_byte *) ext->x_csect.x_smtyp);
594 in->x_csect.x_smclas = bfd_h_get_8 (abfd, (bfd_byte *) ext->x_csect.x_smclas);
595 in->x_csect.x_stab = bfd_h_get_32 (abfd, (bfd_byte *) ext->x_csect.x_stab);
596 in->x_csect.x_snstab = bfd_h_get_16 (abfd, (bfd_byte *) ext->x_csect.x_snstab);
597 break;
598 #endif
599
600 case C_STAT:
601 #ifdef C_LEAFSTAT
602 case C_LEAFSTAT:
603 #endif
604 case C_HIDDEN:
605 if (type == T_NULL) {
606 in->x_scn.x_scnlen = GET_SCN_SCNLEN(abfd, ext);
607 in->x_scn.x_nreloc = GET_SCN_NRELOC(abfd, ext);
608 in->x_scn.x_nlinno = GET_SCN_NLINNO(abfd, ext);
609 break;
610 }
611 default:
612 in->x_sym.x_tagndx.l = bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_tagndx);
613 #ifndef NO_TVNDX
614 in->x_sym.x_tvndx = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_tvndx);
615 #endif
616
617 if (ISARY(type) || class == C_BLOCK) {
618 #if DIMNUM != E_DIMNUM
619 -> Error, we need to cope with truncating or extending DIMNUM!;
620 #else
621 in->x_sym.x_fcnary.x_ary.x_dimen[0] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[0]);
622 in->x_sym.x_fcnary.x_ary.x_dimen[1] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[1]);
623 in->x_sym.x_fcnary.x_ary.x_dimen[2] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[2]);
624 in->x_sym.x_fcnary.x_ary.x_dimen[3] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[3]);
625 #endif
626 }
627 in->x_sym.x_fcnary.x_fcn.x_lnnoptr = GET_FCN_LNNOPTR(abfd, ext);
628 in->x_sym.x_fcnary.x_fcn.x_endndx.l = GET_FCN_ENDNDX(abfd, ext);
629
630 if (ISFCN(type)) {
631 in->x_sym.x_misc.x_fsize = bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_misc.x_fsize);
632 }
633 else {
634 in->x_sym.x_misc.x_lnsz.x_lnno = GET_LNSZ_LNNO(abfd, ext);
635 in->x_sym.x_misc.x_lnsz.x_size = GET_LNSZ_SIZE(abfd, ext);
636 }
637 }
638 }
639
640 static unsigned int
641 DEFUN(coff_swap_aux_out,(abfd, inp, type, class, extp),
642 bfd *abfd AND
643 PTR inp AND
644 int type AND
645 int class AND
646 PTR extp)
647 {
648 union internal_auxent *in = (union internal_auxent *)inp;
649 AUXENT *ext = (AUXENT *)extp;
650 switch (class) {
651 case C_FILE:
652 if (in->x_file.x_fname[0] == 0) {
653 PUTWORD(abfd, 0, (bfd_byte *) ext->x_file.x_n.x_zeroes);
654 PUTWORD(abfd,
655 in->x_file.x_n.x_offset,
656 (bfd_byte *) ext->x_file.x_n.x_offset);
657 }
658 else {
659 #if FILNMLEN != E_FILNMLEN
660 -> Error, we need to cope with truncating or extending FILNMLEN!;
661 #else
662 memcpy (ext->x_file.x_fname, in->x_file.x_fname, FILNMLEN);
663 #endif
664 }
665 break;
666
667 #ifdef RS6000COFF_C
668 /* RS/6000 "csect" auxents */
669 case C_EXT:
670 case C_HIDEXT:
671 PUTWORD (abfd, in->x_csect.x_scnlen, ext->x_csect.x_scnlen);
672 PUTWORD (abfd, in->x_csect.x_parmhash, ext->x_csect.x_parmhash);
673 PUTHALF (abfd, in->x_csect.x_snhash, ext->x_csect.x_snhash);
674 /* We don't have to hack bitfields in x_smtyp because it's defined by
675 shifts-and-ands, which are equivalent on all byte orders. */
676 PUTBYTE (abfd, in->x_csect.x_smtyp, ext->x_csect.x_smtyp);
677 PUTBYTE (abfd, in->x_csect.x_smclas, ext->x_csect.x_smclas);
678 PUTWORD (abfd, in->x_csect.x_stab, ext->x_csect.x_stab);
679 PUTHALF (abfd, in->x_csect.x_snstab, ext->x_csect.x_snstab);
680 break;
681 #endif
682
683 case C_STAT:
684 #ifdef C_LEAFSTAT
685 case C_LEAFSTAT:
686 #endif
687 case C_HIDDEN:
688 if (type == T_NULL) {
689 PUT_SCN_SCNLEN(abfd, in->x_scn.x_scnlen, ext);
690 PUT_SCN_NRELOC(abfd, in->x_scn.x_nreloc, ext);
691 PUT_SCN_NLINNO(abfd, in->x_scn.x_nlinno, ext);
692 break;
693 }
694 default:
695 PUTWORD(abfd, in->x_sym.x_tagndx.l, (bfd_byte *) ext->x_sym.x_tagndx);
696 #ifndef NO_TVNDX
697 bfd_h_put_16(abfd, in->x_sym.x_tvndx , (bfd_byte *) ext->x_sym.x_tvndx);
698 #endif
699
700 if (ISFCN(type)) {
701 PUTWORD(abfd, in->x_sym.x_misc.x_fsize, (bfd_byte *) ext->x_sym.x_misc.x_fsize);
702 PUT_FCN_LNNOPTR(abfd, in->x_sym.x_fcnary.x_fcn.x_lnnoptr, ext);
703 PUT_FCN_ENDNDX(abfd, in->x_sym.x_fcnary.x_fcn.x_endndx.l, ext);
704 }
705 else {
706
707 if (ISARY(type) || class == C_BLOCK) {
708 #if DIMNUM != E_DIMNUM
709 -> Error, we need to cope with truncating or extending DIMNUM!;
710 #else
711 bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[0], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[0]);
712 bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[1], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[1]);
713 bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[2], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[2]);
714 bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[3], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[3]);
715 #endif
716 }
717 PUT_LNSZ_LNNO(abfd, in->x_sym.x_misc.x_lnsz.x_lnno, ext);
718 PUT_LNSZ_SIZE(abfd, in->x_sym.x_misc.x_lnsz.x_size, ext);
719
720 PUT_FCN_LNNOPTR(abfd, in->x_sym.x_fcnary.x_fcn.x_lnnoptr, ext);
721 PUT_FCN_ENDNDX(abfd, in->x_sym.x_fcnary.x_fcn.x_endndx.l, ext);
722
723
724 }
725 }
726 return sizeof(AUXENT);
727 }
728
729 #endif /* NO_COFF_SYMBOLS */
730
731 #ifndef NO_COFF_LINENOS
732
733 static void
734 DEFUN(coff_swap_lineno_in,(abfd, ext1, in1),
735 bfd *abfd AND
736 PTR ext1 AND
737 PTR in1)
738 {
739 LINENO *ext = (LINENO *)ext1;
740 struct internal_lineno *in = (struct internal_lineno *)in1;
741
742 in->l_addr.l_symndx = bfd_h_get_32(abfd, (bfd_byte *) ext->l_addr.l_symndx);
743 in->l_lnno = GET_LINENO_LNNO(abfd, ext);
744 }
745
746 static unsigned int
747 DEFUN(coff_swap_lineno_out,(abfd, inp, outp),
748 bfd *abfd AND
749 PTR inp AND
750 PTR outp)
751 {
752 struct internal_lineno *in = (struct internal_lineno *)inp;
753 struct external_lineno *ext = (struct external_lineno *)outp;
754 PUTWORD(abfd, in->l_addr.l_symndx, (bfd_byte *)
755 ext->l_addr.l_symndx);
756
757 PUT_LINENO_LNNO (abfd, in->l_lnno, ext);
758 return sizeof(struct external_lineno);
759 }
760
761 #endif /* NO_COFF_LINENOS */
762
763
764 static void
765 DEFUN(bfd_swap_aouthdr_in,(abfd, aouthdr_ext1, aouthdr_int1),
766 bfd *abfd AND
767 PTR aouthdr_ext1 AND
768 PTR aouthdr_int1)
769 {
770 AOUTHDR *aouthdr_ext = (AOUTHDR *) aouthdr_ext1;
771 struct internal_aouthdr *aouthdr_int = (struct internal_aouthdr *)aouthdr_int1;
772
773 aouthdr_int->magic = bfd_h_get_16(abfd, (bfd_byte *) aouthdr_ext->magic);
774 aouthdr_int->vstamp = bfd_h_get_16(abfd, (bfd_byte *) aouthdr_ext->vstamp);
775 aouthdr_int->tsize = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->tsize);
776 aouthdr_int->dsize = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->dsize);
777 aouthdr_int->bsize = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->bsize);
778 aouthdr_int->entry = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->entry);
779 aouthdr_int->text_start = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->text_start);
780 aouthdr_int->data_start = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->data_start);
781 #ifdef I960
782 aouthdr_int->tagentries = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->tagentries);
783 #endif
784
785 #ifdef RS6000COFF_C
786 aouthdr_int->o_toc = bfd_h_get_32(abfd, aouthdr_ext->o_toc);
787 aouthdr_int->o_snentry = bfd_h_get_16(abfd, aouthdr_ext->o_snentry);
788 aouthdr_int->o_sntext = bfd_h_get_16(abfd, aouthdr_ext->o_sntext);
789 aouthdr_int->o_sndata = bfd_h_get_16(abfd, aouthdr_ext->o_sndata);
790 aouthdr_int->o_sntoc = bfd_h_get_16(abfd, aouthdr_ext->o_sntoc);
791 aouthdr_int->o_snloader = bfd_h_get_16(abfd, aouthdr_ext->o_snloader);
792 aouthdr_int->o_snbss = bfd_h_get_16(abfd, aouthdr_ext->o_snbss);
793 aouthdr_int->o_algntext = bfd_h_get_16(abfd, aouthdr_ext->o_algntext);
794 aouthdr_int->o_algndata = bfd_h_get_16(abfd, aouthdr_ext->o_algndata);
795 aouthdr_int->o_modtype = bfd_h_get_16(abfd, aouthdr_ext->o_modtype);
796 aouthdr_int->o_maxstack = bfd_h_get_32(abfd, aouthdr_ext->o_maxstack);
797 #endif
798 }
799
800 static unsigned int
801 DEFUN(coff_swap_aouthdr_out,(abfd, in, out),
802 bfd *abfd AND
803 PTR in AND
804 PTR out)
805 {
806 struct internal_aouthdr *aouthdr_in = (struct internal_aouthdr *)in;
807 AOUTHDR *aouthdr_out = (AOUTHDR *)out;
808 bfd_h_put_16(abfd, aouthdr_in->magic, (bfd_byte *) aouthdr_out->magic);
809 bfd_h_put_16(abfd, aouthdr_in->vstamp, (bfd_byte *) aouthdr_out->vstamp);
810 bfd_h_put_32(abfd, aouthdr_in->tsize, (bfd_byte *) aouthdr_out->tsize);
811 bfd_h_put_32(abfd, aouthdr_in->dsize, (bfd_byte *) aouthdr_out->dsize);
812 bfd_h_put_32(abfd, aouthdr_in->bsize, (bfd_byte *) aouthdr_out->bsize);
813 bfd_h_put_32(abfd, aouthdr_in->entry, (bfd_byte *) aouthdr_out->entry);
814 bfd_h_put_32(abfd, aouthdr_in->text_start,
815 (bfd_byte *) aouthdr_out->text_start);
816 bfd_h_put_32(abfd, aouthdr_in->data_start, (bfd_byte *) aouthdr_out->data_start);
817 #ifdef I960
818 bfd_h_put_32(abfd, aouthdr_in->tagentries, (bfd_byte *) aouthdr_out->tagentries);
819 #endif
820 return sizeof(AOUTHDR);
821 }
822
823 static void
824 DEFUN(coff_swap_scnhdr_in,(abfd, scnhdr_ext, scnhdr_int),
825 bfd *abfd AND
826 SCNHDR *scnhdr_ext AND
827 struct internal_scnhdr *scnhdr_int)
828 {
829 memcpy(scnhdr_int->s_name, scnhdr_ext->s_name, sizeof(scnhdr_int->s_name));
830 scnhdr_int->s_vaddr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_vaddr);
831 scnhdr_int->s_paddr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_paddr);
832 scnhdr_int->s_size = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_size);
833
834 scnhdr_int->s_scnptr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_scnptr);
835 scnhdr_int->s_relptr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_relptr);
836 scnhdr_int->s_lnnoptr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_lnnoptr);
837 scnhdr_int->s_flags = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_flags);
838 #if defined(M88)
839 scnhdr_int->s_nreloc = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_nreloc);
840 scnhdr_int->s_nlnno = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_nlnno);
841 #else
842 scnhdr_int->s_nreloc = bfd_h_get_16(abfd, (bfd_byte *) scnhdr_ext->s_nreloc);
843 scnhdr_int->s_nlnno = bfd_h_get_16(abfd, (bfd_byte *) scnhdr_ext->s_nlnno);
844 #endif
845 #ifdef I960
846 scnhdr_int->s_align = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_align);
847 #endif
848 }
849
850 static unsigned int
851 DEFUN(coff_swap_scnhdr_out,(abfd, in, out),
852 bfd *abfd AND
853 PTR in AND
854 PTR out)
855 {
856 struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *)in;
857 SCNHDR *scnhdr_ext = (SCNHDR *)out;
858 memcpy(scnhdr_ext->s_name, scnhdr_int->s_name, sizeof(scnhdr_int->s_name));
859 PUTWORD(abfd, scnhdr_int->s_vaddr, (bfd_byte *) scnhdr_ext->s_vaddr);
860 PUTWORD(abfd, scnhdr_int->s_paddr, (bfd_byte *) scnhdr_ext->s_paddr);
861 PUTWORD(abfd, scnhdr_int->s_size, (bfd_byte *) scnhdr_ext->s_size);
862 PUTWORD(abfd, scnhdr_int->s_scnptr, (bfd_byte *) scnhdr_ext->s_scnptr);
863 PUTWORD(abfd, scnhdr_int->s_relptr, (bfd_byte *) scnhdr_ext->s_relptr);
864 PUTWORD(abfd, scnhdr_int->s_lnnoptr, (bfd_byte *) scnhdr_ext->s_lnnoptr);
865 PUTWORD(abfd, scnhdr_int->s_flags, (bfd_byte *) scnhdr_ext->s_flags);
866 #if defined(M88)
867 PUTWORD(abfd, scnhdr_int->s_nlnno, (bfd_byte *) scnhdr_ext->s_nlnno);
868 PUTWORD(abfd, scnhdr_int->s_nreloc, (bfd_byte *) scnhdr_ext->s_nreloc);
869 #else
870 PUTHALF(abfd, scnhdr_int->s_nlnno, (bfd_byte *) scnhdr_ext->s_nlnno);
871 PUTHALF(abfd, scnhdr_int->s_nreloc, (bfd_byte *) scnhdr_ext->s_nreloc);
872 #endif
873
874 #if defined(I960)
875 PUTWORD(abfd, scnhdr_int->s_align, (bfd_byte *) scnhdr_ext->s_align);
876 #endif
877 return sizeof(SCNHDR);
878 }
879
880
881 /*
882 initialize a section structure with information peculiar to this
883 particular implementation of coff
884 */
885
886 static boolean
887 DEFUN(coff_new_section_hook,(abfd_ignore, section),
888 bfd *abfd_ignore AND
889 asection *section)
890 {
891 section->alignment_power = abfd_ignore->xvec->align_power_min;
892 return true;
893 }
894
895 static asection bfd_debug_section =
896 { "*DEBUG*" };
897
898
899
900 static void
901 DEFUN(make_abs_section,(abfd),
902 bfd *abfd)
903 {
904
905
906
907 }
908
909 /* Take a section header read from a coff file (in HOST byte order),
910 and make a BFD "section" out of it. */
911 static boolean
912 DEFUN(make_a_section_from_file,(abfd, hdr, target_index),
913 bfd *abfd AND
914 struct internal_scnhdr *hdr AND
915 unsigned int target_index)
916 {
917 asection *return_section;
918 char *name;
919
920 /* Assorted wastage to null-terminate the name, thanks AT&T! */
921 name = bfd_alloc(abfd, sizeof (hdr->s_name)+1);
922 if (name == NULL) {
923 bfd_error = no_memory;
924 return false;
925 }
926 strncpy(name, (char *) &hdr->s_name[0], sizeof (hdr->s_name));
927 name[sizeof (hdr->s_name)] = 0;
928
929 return_section = bfd_make_section(abfd, name);
930 if (return_section == NULL)
931 return false;
932
933 /* s_paddr is presumed to be = to s_vaddr */
934
935 return_section->vma = hdr->s_vaddr;
936 return_section->_raw_size = hdr->s_size;
937 return_section->filepos = hdr->s_scnptr;
938 return_section->rel_filepos = hdr->s_relptr;
939 return_section->reloc_count = hdr->s_nreloc;
940 #ifdef I960
941
942 /* FIXME, use a temp var rather than alignment_power */
943 return_section->alignment_power = hdr->s_align;
944 {
945 unsigned int i;
946 for (i = 0; i < 32; i++) {
947 if ((1 << i) >= (int) (return_section->alignment_power)) {
948 return_section->alignment_power = i;
949 break;
950 }
951 }
952 }
953
954 #endif
955 return_section->line_filepos = hdr->s_lnnoptr;
956 /*
957 return_section->linesize = hdr->s_nlnno * sizeof (struct lineno);
958 */
959
960 return_section->lineno_count = hdr->s_nlnno;
961 return_section->userdata = NULL;
962 return_section->next = (asection *) NULL;
963 return_section->flags = styp_to_sec_flags(hdr->s_flags);
964
965 return_section->target_index = target_index;
966
967 if (hdr->s_nreloc != 0)
968 return_section->flags |= SEC_RELOC;
969 /* FIXME: should this check 'hdr->s_size > 0' */
970 if (hdr->s_scnptr != 0)
971 return_section->flags |= SEC_HAS_CONTENTS;
972 return true;
973 }
974 static boolean
975 DEFUN(coff_mkobject,(abfd),
976 bfd *abfd)
977 {
978 abfd->tdata.coff_obj_data = (struct coff_tdata *)bfd_zalloc (abfd,sizeof(coff_data_type));
979 if (abfd->tdata.coff_obj_data == 0){
980 bfd_error = no_memory;
981 return false;
982 }
983 coff_data(abfd)->relocbase = 0;
984 /* make_abs_section(abfd);*/
985 return true;
986 }
987
988 static
989 bfd_target *
990 DEFUN(coff_real_object_p,(abfd, nscns, internal_f, internal_a),
991 bfd *abfd AND
992 unsigned nscns AND
993 struct internal_filehdr *internal_f AND
994 struct internal_aouthdr *internal_a)
995 {
996 coff_data_type *coff;
997 enum bfd_architecture arch;
998 long machine;
999 size_t readsize; /* length of file_info */
1000 SCNHDR *external_sections;
1001
1002 /* Build a play area */
1003 if (coff_mkobject(abfd) != true)
1004 return 0;
1005
1006 coff = coff_data(abfd);
1007
1008
1009 external_sections = (SCNHDR *)bfd_alloc(abfd, readsize = (nscns * SCNHSZ));
1010
1011 if (bfd_read((PTR)external_sections, 1, readsize, abfd) != readsize) {
1012 goto fail;
1013 }
1014
1015
1016 /* Now copy data as required; construct all asections etc */
1017 coff->symbol_index_slew = 0;
1018 coff->relocbase =0;
1019 coff->raw_syment_count = 0;
1020 coff->raw_linenos = 0;
1021 coff->raw_syments = 0;
1022 coff->sym_filepos =0;
1023 coff->flags = internal_f->f_flags;
1024 if (nscns != 0) {
1025 unsigned int i;
1026 for (i = 0; i < nscns; i++) {
1027 struct internal_scnhdr tmp;
1028 coff_swap_scnhdr_in(abfd, external_sections + i, &tmp);
1029 make_a_section_from_file(abfd,&tmp, i+1);
1030 }
1031 }
1032
1033 /* make_abs_section(abfd);*/
1034
1035 /* Determine the machine architecture and type. */
1036 machine = 0;
1037 switch (internal_f->f_magic) {
1038 #ifdef I386MAGIC
1039 case I386MAGIC:
1040 arch = bfd_arch_i386;
1041 machine = 0;
1042 break;
1043 #endif
1044
1045 #ifdef A29K_MAGIC_BIG
1046 case A29K_MAGIC_BIG:
1047 case A29K_MAGIC_LITTLE:
1048 arch = bfd_arch_a29k;
1049 machine = 0;
1050 break;
1051 #endif
1052
1053 #ifdef MIPS
1054 case MIPS_MAGIC_1:
1055 case MIPS_MAGIC_2:
1056 case MIPS_MAGIC_3:
1057 arch = bfd_arch_mips;
1058 machine = 0;
1059 break;
1060 #endif
1061
1062 #ifdef MC68MAGIC
1063 case MC68MAGIC:
1064 case M68MAGIC:
1065 arch = bfd_arch_m68k;
1066 machine = 68020;
1067 break;
1068 #endif
1069 #ifdef MC88MAGIC
1070 case MC88MAGIC:
1071 case MC88DMAGIC:
1072 case MC88OMAGIC:
1073 arch = bfd_arch_m88k;
1074 machine = 88100;
1075 break;
1076 #endif
1077 #ifdef I960
1078 #ifdef I960ROMAGIC
1079 case I960ROMAGIC:
1080 case I960RWMAGIC:
1081 arch = bfd_arch_i960;
1082 switch (F_I960TYPE & internal_f->f_flags)
1083 {
1084 default:
1085 case F_I960CORE:
1086 machine = bfd_mach_i960_core;
1087 break;
1088 case F_I960KB:
1089 machine = bfd_mach_i960_kb_sb;
1090 break;
1091 case F_I960MC:
1092 machine = bfd_mach_i960_mc;
1093 break;
1094 case F_I960XA:
1095 machine = bfd_mach_i960_xa;
1096 break;
1097 case F_I960CA:
1098 machine = bfd_mach_i960_ca;
1099 break;
1100 case F_I960KA:
1101 machine = bfd_mach_i960_ka_sa;
1102 break;
1103 }
1104 break;
1105 #endif
1106 #endif
1107
1108 #ifdef U802ROMAGIC
1109 case U802ROMAGIC:
1110 case U802WRMAGIC:
1111 case U802TOCMAGIC:
1112 arch = bfd_arch_rs6000;
1113 machine = 6000;
1114 break;
1115 #endif
1116
1117 #ifdef H8300MAGIC
1118 case H8300MAGIC:
1119 arch = bfd_arch_h8300;
1120 machine = 0;
1121 break;
1122 #endif
1123
1124 default: /* Unreadable input file type */
1125 arch = bfd_arch_obscure;
1126 break;
1127 }
1128
1129 bfd_default_set_arch_mach(abfd, arch, machine);
1130 if (!(internal_f->f_flags & F_RELFLG))
1131 abfd->flags |= HAS_RELOC;
1132 if ((internal_f->f_flags & F_EXEC))
1133 abfd->flags |= EXEC_P;
1134 if (!(internal_f->f_flags & F_LNNO))
1135 abfd->flags |= HAS_LINENO;
1136 if (!(internal_f->f_flags & F_LSYMS))
1137 abfd->flags |= HAS_LOCALS;
1138
1139
1140 bfd_get_symcount(abfd) = internal_f->f_nsyms;
1141 if (internal_f->f_nsyms)
1142 abfd->flags |= HAS_SYMS;
1143
1144 coff->sym_filepos = internal_f->f_symptr;
1145
1146 /* These members communicate important constants about the symbol table
1147 to GDB's symbol-reading code. These `constants' unfortunately vary
1148 from coff implementation to implementation... */
1149 #ifndef NO_COFF_SYMBOLS
1150 coff->local_n_btmask = N_BTMASK;
1151 coff->local_n_btshft = N_BTSHFT;
1152 coff->local_n_tmask = N_TMASK;
1153 coff->local_n_tshift = N_TSHIFT;
1154 coff->local_symesz = SYMESZ;
1155 coff->local_auxesz = AUXESZ;
1156 coff->local_linesz = LINESZ;
1157 #endif
1158
1159 coff->symbols = (coff_symbol_type *) NULL;
1160 bfd_get_start_address(abfd) = internal_f->f_opthdr ? internal_a->entry : 0;
1161
1162 return abfd->xvec;
1163 fail:
1164 bfd_release(abfd, coff);
1165 return (bfd_target *)NULL;
1166 }
1167
1168 static bfd_target *
1169 DEFUN(coff_object_p,(abfd),
1170 bfd *abfd)
1171 {
1172 int nscns;
1173 FILHDR filehdr;
1174 AOUTHDR opthdr;
1175 struct internal_filehdr internal_f;
1176 struct internal_aouthdr internal_a;
1177
1178 bfd_error = system_call_error;
1179
1180 /* figure out how much to read */
1181 if (bfd_read((PTR) &filehdr, 1, FILHSZ, abfd) != FILHSZ)
1182 return 0;
1183
1184 bfd_swap_filehdr_in(abfd, &filehdr, &internal_f);
1185
1186 if (BADMAG(internal_f)) {
1187 bfd_error = wrong_format;
1188 return 0;
1189 }
1190 nscns =internal_f.f_nscns;
1191
1192 if (internal_f.f_opthdr) {
1193 if (bfd_read((PTR) &opthdr, 1,AOUTSZ, abfd) != AOUTSZ) {
1194 return 0;
1195 }
1196 bfd_swap_aouthdr_in(abfd, (char *)&opthdr, (char *)&internal_a);
1197 }
1198
1199 /* Seek past the opt hdr stuff */
1200 bfd_seek(abfd, internal_f.f_opthdr + FILHSZ, SEEK_SET);
1201
1202 /* if the optional header is NULL or not the correct size then
1203 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1204 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1205 optional header is of a different size.
1206
1207 But the mips keeps extra stuff in it's opthdr, so dont check
1208 when doing that
1209 */
1210
1211 #if defined(M88) || defined(I960)
1212 if (internal_f.f_opthdr != 0 && AOUTSZ != internal_f.f_opthdr)
1213 return (bfd_target *)NULL;
1214 #endif
1215
1216 return coff_real_object_p(abfd, nscns, &internal_f, &internal_a);
1217 }
1218
1219
1220
1221 #ifndef NO_COFF_LINENOS
1222
1223 static void
1224 DEFUN(coff_count_linenumbers,(abfd),
1225 bfd *abfd)
1226 {
1227 unsigned int limit = bfd_get_symcount(abfd);
1228 unsigned int i;
1229 asymbol **p;
1230 {
1231 asection *s = abfd->sections->output_section;
1232 while (s) {
1233 BFD_ASSERT(s->lineno_count == 0);
1234 s = s->next;
1235 }
1236 }
1237
1238
1239 for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) {
1240 asymbol *q_maybe = *p;
1241 if (q_maybe->the_bfd->xvec->flavour == bfd_target_coff_flavour) {
1242 coff_symbol_type *q = coffsymbol(q_maybe);
1243 if (q->lineno) {
1244 /*
1245 This symbol has a linenumber, increment the owning
1246 section's linenumber count
1247 */
1248 alent *l = q->lineno;
1249 q->symbol.section->output_section->lineno_count++;
1250 l++;
1251 while (l->line_number) {
1252 q->symbol.section->output_section->lineno_count++;
1253 l++;
1254 }
1255 }
1256 }
1257 }
1258 }
1259
1260 #endif /* NO_COFF_LINENOS */
1261
1262 #ifndef NO_COFF_SYMBOLS
1263
1264 /*
1265 Takes a bfd and a symbol, returns a pointer to the coff specific area
1266 of the symbol if there is one.
1267 */
1268 static coff_symbol_type *
1269 DEFUN(coff_symbol_from,(ignore_abfd, symbol),
1270 bfd *ignore_abfd AND
1271 asymbol *symbol)
1272 {
1273 if (symbol->the_bfd->xvec->flavour != bfd_target_coff_flavour)
1274 return (coff_symbol_type *)NULL;
1275
1276 if (symbol->the_bfd->tdata.coff_obj_data == (coff_data_type*)NULL)
1277 return (coff_symbol_type *)NULL;
1278
1279 return (coff_symbol_type *) symbol;
1280 }
1281
1282
1283
1284 static void
1285 DEFUN(fixup_symbol_value,(coff_symbol_ptr, syment),
1286 coff_symbol_type *coff_symbol_ptr AND
1287 struct internal_syment *syment)
1288 {
1289
1290 /* Normalize the symbol flags */
1291 if (coff_symbol_ptr->symbol.section == &bfd_com_section) {
1292 /* a common symbol is undefined with a value */
1293 syment->n_scnum = N_UNDEF;
1294 syment->n_value = coff_symbol_ptr->symbol.value;
1295 }
1296 else if (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING) {
1297 syment->n_value = coff_symbol_ptr->symbol.value;
1298 }
1299 else if (coff_symbol_ptr->symbol.section == & bfd_und_section) {
1300 syment->n_scnum = N_UNDEF;
1301 syment->n_value = 0;
1302 }
1303 else {
1304 if (coff_symbol_ptr->symbol.section) {
1305 syment->n_scnum =
1306 coff_symbol_ptr->symbol.section->output_section->target_index;
1307
1308 syment->n_value =
1309 coff_symbol_ptr->symbol.value +
1310 coff_symbol_ptr->symbol.section->output_offset +
1311 coff_symbol_ptr->symbol.section->output_section->vma;
1312 }
1313 else {
1314 BFD_ASSERT(0);
1315 /* This can happen, but I don't know why yet (steve@cygnus.com) */
1316 syment->n_scnum = N_ABS;
1317 syment->n_value = coff_symbol_ptr->symbol.value;
1318 }
1319 }
1320 }
1321
1322 /* run through all the symbols in the symbol table and work out what
1323 their indexes into the symbol table will be when output
1324
1325 Coff requires that each C_FILE symbol points to the next one in the
1326 chain, and that the last one points to the first external symbol. We
1327 do that here too.
1328
1329 */
1330 static void
1331 DEFUN(coff_renumber_symbols,(bfd_ptr),
1332 bfd *bfd_ptr)
1333 {
1334 unsigned int symbol_count = bfd_get_symcount(bfd_ptr);
1335 asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols;
1336 unsigned int native_index = 0;
1337 struct internal_syment *last_file = (struct internal_syment *)NULL;
1338 unsigned int symbol_index;
1339 for (symbol_index = 0; symbol_index < symbol_count; symbol_index++)
1340 {
1341 coff_symbol_type *coff_symbol_ptr = coff_symbol_from(bfd_ptr, symbol_ptr_ptr[symbol_index]);
1342 if (coff_symbol_ptr && coff_symbol_ptr->native) {
1343 combined_entry_type *s = coff_symbol_ptr->native;
1344 int i;
1345
1346 if (s->u.syment.n_sclass == C_FILE)
1347 {
1348 if (last_file != (struct internal_syment *)NULL) {
1349 last_file->n_value = native_index;
1350 }
1351 last_file = &(s->u.syment);
1352 }
1353 else {
1354
1355 /* Modify the symbol values according to their section and
1356 type */
1357
1358 fixup_symbol_value(coff_symbol_ptr, &(s->u.syment));
1359 }
1360 for (i = 0; i < s->u.syment.n_numaux + 1; i++) {
1361 s[i].offset = native_index ++;
1362 }
1363 }
1364 else {
1365 native_index++;
1366 }
1367 }
1368 }
1369
1370
1371 /*
1372 Run thorough the symbol table again, and fix it so that all pointers to
1373 entries are changed to the entries' index in the output symbol table.
1374
1375 */
1376 static void
1377 DEFUN(coff_mangle_symbols,(bfd_ptr),
1378 bfd *bfd_ptr)
1379 {
1380 unsigned int symbol_count = bfd_get_symcount(bfd_ptr);
1381 asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols;
1382 unsigned int symbol_index;
1383
1384 for (symbol_index = 0; symbol_index < symbol_count; symbol_index++)
1385 {
1386 coff_symbol_type *coff_symbol_ptr =
1387 coff_symbol_from(bfd_ptr, symbol_ptr_ptr[symbol_index]);
1388
1389 if (coff_symbol_ptr && coff_symbol_ptr->native) {
1390 int i;
1391 combined_entry_type *s = coff_symbol_ptr->native;
1392
1393 for (i = 0; i < s->u.syment.n_numaux ; i++) {
1394 combined_entry_type *a = s + i + 1;
1395 if (a->fix_tag) {
1396 a->u.auxent.x_sym.x_tagndx.l =
1397 a->u.auxent.x_sym.x_tagndx.p->offset;
1398 a->fix_tag = 0;
1399 }
1400 if (a->fix_end) {
1401 a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l =
1402 a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p->offset;
1403 a->fix_end = 0;
1404
1405 }
1406
1407 }
1408 }
1409 }
1410 }
1411
1412 static int string_size;
1413 static void
1414 DEFUN(coff_fix_symbol_name,(ignore_abfd, symbol, native),
1415 bfd *ignore_abfd AND
1416 asymbol *symbol AND
1417 combined_entry_type *native)
1418 {
1419 unsigned int name_length;
1420 union internal_auxent *auxent;
1421 char * name = ( char *)(symbol->name);
1422
1423 if (name == (char *) NULL) {
1424 /* coff symbols always have names, so we'll make one up */
1425 symbol->name = "strange";
1426 name = (char *)symbol->name;
1427 }
1428 name_length = strlen(name);
1429
1430 if (native->u.syment.n_sclass == C_FILE) {
1431 strncpy(native->u.syment._n._n_name, ".file", SYMNMLEN);
1432 auxent = &(native+1)->u.auxent;
1433
1434 #ifdef COFF_LONG_FILENAMES
1435 if (name_length <= FILNMLEN) {
1436 strncpy(auxent->x_file.x_fname, name, FILNMLEN);
1437 }
1438 else {
1439 auxent->x_file.x_n.x_offset = string_size + 4;
1440 auxent->x_file.x_n.x_zeroes = 0;
1441 string_size += name_length + 1;
1442 }
1443 #else
1444 strncpy(auxent->x_file.x_fname, name, FILNMLEN);
1445 if (name_length > FILNMLEN) {
1446 name[FILNMLEN] = '\0';
1447 }
1448 #endif
1449 }
1450 else
1451 { /* NOT A C_FILE SYMBOL */
1452 if (name_length <= SYMNMLEN) {
1453 /* This name will fit into the symbol neatly */
1454 strncpy(native->u.syment._n._n_name, symbol->name, SYMNMLEN);
1455 }
1456 else {
1457 native->u.syment._n._n_n._n_offset = string_size + 4;
1458 native->u.syment._n._n_n._n_zeroes = 0;
1459 string_size += name_length + 1;
1460 }
1461 }
1462 }
1463
1464
1465
1466 static unsigned int
1467 DEFUN(coff_write_symbol,(abfd, symbol, native, written),
1468 bfd *abfd AND
1469 asymbol *symbol AND
1470 combined_entry_type *native AND
1471 unsigned int written)
1472 {
1473 unsigned int numaux = native->u.syment.n_numaux;
1474 int type = native->u.syment.n_type;
1475 int class = native->u.syment.n_sclass;
1476 SYMENT buf;
1477 unsigned int j;
1478 if (symbol->section == &bfd_abs_section)
1479 {
1480 native->u.syment.n_scnum = N_ABS;
1481 }
1482 else if (symbol->section == &bfd_debug_section)
1483 {
1484 native->u.syment.n_scnum = N_DEBUG;
1485 }
1486 else if (symbol->section == &bfd_und_section)
1487 {
1488 native->u.syment.n_scnum = N_UNDEF;
1489 }
1490 else
1491 {
1492 native->u.syment.n_scnum =
1493 symbol->section->output_section->target_index;
1494 }
1495
1496
1497 coff_fix_symbol_name(abfd, symbol, native);
1498
1499 coff_swap_sym_out(abfd, &native->u.syment, &buf);
1500 bfd_write((PTR)& buf, 1, SYMESZ, abfd);
1501 for (j = 0; j < native->u.syment.n_numaux; j++)
1502 {
1503 AUXENT buf1;
1504 bzero((PTR)&buf, AUXESZ);
1505 coff_swap_aux_out(abfd,
1506 &( (native + j + 1)->u.auxent), type, class, &buf1);
1507 bfd_write((PTR) (&buf1), 1, AUXESZ, abfd);
1508 }
1509 /*
1510 Reuse somewhere in the symbol to keep the index
1511 */
1512 set_index(symbol, written);
1513 return written + 1 + numaux;
1514 }
1515
1516
1517 static unsigned int
1518 DEFUN(coff_write_alien_symbol,(abfd, symbol, written),
1519 bfd *abfd AND
1520 asymbol *symbol AND
1521 unsigned int written)
1522 {
1523 /*
1524 This symbol has been created by the loader, or come from a non
1525 coff format. It has no native element to inherit, make our
1526 own
1527 */
1528 combined_entry_type *native;
1529 combined_entry_type dummy;
1530 native = &dummy;
1531 native->u.syment.n_type = T_NULL;
1532 #ifdef I960
1533 native->u.syment.n_flags = 0;
1534 #endif
1535 if (symbol->section == &bfd_und_section)
1536 {
1537 native->u.syment.n_scnum = N_UNDEF;
1538 native->u.syment.n_value = symbol->value;
1539 }
1540 else if (symbol->section == &bfd_com_section)
1541 {
1542 native->u.syment.n_scnum = N_UNDEF;
1543 native->u.syment.n_value = symbol->value;
1544
1545 }
1546
1547 else if (symbol->flags & BSF_DEBUGGING) {
1548 /*
1549 remove name so it doesn't take up any space
1550 */
1551 symbol->name = "";
1552 }
1553 else {
1554 native->u.syment.n_scnum = symbol->section->output_section->target_index;
1555 native->u.syment.n_value = symbol->value +
1556 symbol->section->output_section->vma +
1557 symbol->section->output_offset;
1558 #ifdef I960
1559 /* Copy the any flags from the the file hdr into the symbol */
1560 {
1561 coff_symbol_type *c = coff_symbol_from(abfd, symbol);
1562 if (c != (coff_symbol_type *)NULL) {
1563 native->u.syment.n_flags = c->symbol.the_bfd->flags;
1564 }
1565 }
1566 #endif
1567 }
1568
1569 #ifdef HASPAD1
1570 native->u.syment.pad1[0] = 0;
1571 native->u.syment.pad1[0] = 0;
1572 #endif
1573
1574 native->u.syment.n_type = 0;
1575 if (symbol->flags & BSF_LOCAL)
1576 native->u.syment.n_sclass = C_STAT;
1577 else
1578 native->u.syment.n_sclass = C_EXT;
1579 native->u.syment.n_numaux = 0;
1580
1581 return coff_write_symbol(abfd, symbol, native, written);
1582 }
1583
1584 static unsigned int
1585 DEFUN(coff_write_native_symbol,(abfd, symbol, written),
1586 bfd *abfd AND
1587 coff_symbol_type *symbol AND
1588 unsigned int written)
1589 {
1590 /*
1591 Does this symbol have an ascociated line number - if so then
1592 make it remember this symbol index. Also tag the auxent of
1593 this symbol to point to the right place in the lineno table
1594 */
1595 combined_entry_type *native = symbol->native;
1596
1597 alent *lineno = symbol->lineno;
1598
1599 if (lineno && !symbol->done_lineno) {
1600 unsigned int count = 0;
1601 lineno[count].u.offset = written;
1602 if (native->u.syment.n_numaux) {
1603 union internal_auxent *a = &((native+1)->u.auxent);
1604
1605 a->x_sym.x_fcnary.x_fcn.x_lnnoptr =
1606 symbol->symbol.section->output_section->moving_line_filepos;
1607 }
1608 /*
1609 And count and relocate all other linenumbers
1610 */
1611
1612 count++;
1613 while (lineno[count].line_number) {
1614 #if 0
1615 /* 13 april 92. sac
1616 I've been told this, but still need proof:
1617 > The second bug is also in `bfd/coffcode.h'. This bug causes the linker to screw
1618 > up the pc-relocations for all the line numbers in COFF code. This bug isn't
1619 > only specific to A29K implementations, but affects all systems using COFF
1620 > format binaries. Note that in COFF object files, the line number core offsets
1621 > output by the assembler are relative to the start of each procedure, not
1622 > to the start of the .text section. This patch relocates the line numbers
1623 > relative to the `native->u.syment.n_value' instead of the section virtual
1624 > address. modular!olson@cs.arizona.edu (Jon Olson)
1625 */
1626 lineno[count].u.offset += native->u.syment.n_value;
1627
1628 #else
1629 lineno[count].u.offset +=
1630 symbol->symbol.section->output_section->vma +
1631 symbol->symbol.section->output_offset;
1632 #endif
1633 count++;
1634 }
1635 symbol->done_lineno = true;
1636
1637 symbol->symbol.section->output_section->moving_line_filepos +=
1638 count * LINESZ;
1639 }
1640 return coff_write_symbol(abfd, &( symbol->symbol), native,written);
1641 }
1642
1643 static void
1644 DEFUN(coff_write_symbols,(abfd),
1645 bfd *abfd)
1646 {
1647 unsigned int i;
1648 unsigned int limit = bfd_get_symcount(abfd);
1649 unsigned int written = 0;
1650
1651 asymbol **p;
1652
1653 string_size = 0;
1654
1655
1656 /* Seek to the right place */
1657 bfd_seek(abfd, obj_sym_filepos(abfd), SEEK_SET);
1658
1659 /* Output all the symbols we have */
1660
1661 written = 0;
1662 for (p = abfd->outsymbols, i = 0; i < limit; i++, p++)
1663 {
1664 asymbol *symbol = *p;
1665 coff_symbol_type *c_symbol = coff_symbol_from(abfd, symbol);
1666
1667 if (c_symbol == (coff_symbol_type *) NULL ||
1668 c_symbol->native == (combined_entry_type *)NULL)
1669 {
1670 written = coff_write_alien_symbol(abfd, symbol, written);
1671 }
1672 else
1673 {
1674 written = coff_write_native_symbol(abfd, c_symbol, written);
1675 }
1676
1677 }
1678
1679 bfd_get_symcount(abfd) = written;
1680
1681 /* Now write out strings */
1682
1683 if (string_size != 0)
1684 {
1685 unsigned int size = string_size + 4;
1686 bfd_byte buffer[4];
1687
1688 bfd_h_put_32(abfd, size, buffer);
1689 bfd_write((PTR) buffer, 1, sizeof(buffer), abfd);
1690 for (p = abfd->outsymbols, i = 0;
1691 i < limit;
1692 i++, p++)
1693 {
1694 asymbol *q = *p;
1695 size_t name_length = strlen(q->name);
1696 int maxlen;
1697 coff_symbol_type* c_symbol = coff_symbol_from(abfd, q);
1698 maxlen = ((c_symbol != NULL && c_symbol->native != NULL) &&
1699 (c_symbol->native->u.syment.n_sclass == C_FILE)) ?
1700 FILNMLEN : SYMNMLEN;
1701
1702 if (name_length > maxlen) {
1703 bfd_write((PTR) (q->name), 1, name_length + 1, abfd);
1704 }
1705 }
1706 }
1707 else {
1708 /* We would normally not write anything here, but we'll write
1709 out 4 so that any stupid coff reader which tries to read
1710 the string table even when there isn't one won't croak.
1711 */
1712
1713 uint32e_type size = 4;
1714 size = size;
1715 bfd_write((PTR)&size, 1, sizeof(size), abfd);
1716
1717 }
1718 }
1719
1720 /*
1721 SUBSUBSECTION
1722 Writing Relocations
1723
1724 To write relocations, all the back end does is step though the
1725 canonical relocation table, and create an
1726 @code{internal_reloc}. The symbol index to use is removed from
1727 the @code{offset} field in the symbol table supplied, the
1728 address comes directly from the sum of the section base
1729 address and the relocation offset and the type is dug directly
1730 from the howto field. Then the @code{internal_reloc} is
1731 swapped into the shape of an @code{external_reloc} and written
1732 out to disk.
1733
1734 */
1735
1736 static void
1737 DEFUN(coff_write_relocs,(abfd),
1738 bfd *abfd)
1739 {
1740 asection *s;
1741 for (s = abfd->sections; s != (asection *) NULL; s = s->next) {
1742 unsigned int i;
1743 struct external_reloc dst;
1744
1745 arelent **p = s->orelocation;
1746 bfd_seek(abfd, s->rel_filepos, SEEK_SET);
1747 for (i = 0; i < s->reloc_count; i++) {
1748 struct internal_reloc n;
1749 arelent *q = p[i];
1750 memset((PTR)&n, 0, sizeof(n));
1751 n.r_vaddr = q->address + s->vma;
1752 if (q->sym_ptr_ptr) {
1753 n.r_symndx = get_index((*(q->sym_ptr_ptr)));
1754 }
1755 #ifdef SELECT_RELOC
1756 /* Work out reloc type from what is required */
1757 SELECT_RELOC(n.r_type, q->howto);
1758 #else
1759 n.r_type = q->howto->type;
1760 #endif
1761 coff_swap_reloc_out(abfd, &n, &dst);
1762 bfd_write((PTR) &n, 1, RELSZ, abfd);
1763 }
1764 }
1765 }
1766 #endif /* NO_COFF_SYMBOLS */
1767
1768 #ifndef NO_COFF_LINENOS
1769
1770 static void
1771 DEFUN(coff_write_linenumbers,(abfd),
1772 bfd *abfd)
1773 {
1774 asection *s;
1775 for (s = abfd->sections; s != (asection *) NULL; s = s->next) {
1776 if (s->lineno_count) {
1777 asymbol **q = abfd->outsymbols;
1778 bfd_seek(abfd, s->line_filepos, SEEK_SET);
1779 /* Find all the linenumbers in this section */
1780 while (*q) {
1781 asymbol *p = *q;
1782 alent *l = BFD_SEND(p->the_bfd, _get_lineno, (p->the_bfd, p));
1783 if (l) {
1784 /* Found a linenumber entry, output */
1785 struct internal_lineno out;
1786 LINENO buff;
1787 memset( (PTR)&out, 0, sizeof(out));
1788 out.l_lnno = 0;
1789 out.l_addr.l_symndx = l->u.offset;
1790 coff_swap_lineno_out(abfd, &out, &buff);
1791 bfd_write((PTR) &buff, 1, LINESZ, abfd);
1792 l++;
1793 while (l->line_number) {
1794 out.l_lnno = l->line_number;
1795 out.l_addr.l_symndx = l->u.offset;
1796 coff_swap_lineno_out(abfd, &out, &buff);
1797 bfd_write((PTR) &buff, 1, LINESZ, abfd);
1798 l++;
1799 }
1800 }
1801 q++;
1802 }
1803 }
1804 }
1805 }
1806
1807 static alent *
1808 DEFUN(coff_get_lineno,(ignore_abfd, symbol),
1809 bfd *ignore_abfd AND
1810 asymbol *symbol)
1811 {
1812 return coffsymbol(symbol)->lineno;
1813 }
1814
1815 #endif /* NO_COFF_LINENOS */
1816
1817 static asymbol *
1818 coff_make_empty_symbol(abfd)
1819 bfd *abfd;
1820 {
1821 coff_symbol_type *new = (coff_symbol_type *) bfd_alloc(abfd, sizeof(coff_symbol_type));
1822 if (new == NULL) {
1823 bfd_error = no_memory;
1824 return (NULL);
1825 } /* on error */
1826 new->native = 0;
1827 new->lineno = (alent *) NULL;
1828 new->done_lineno = false;
1829 new->symbol.the_bfd = abfd;
1830 return &new->symbol;
1831 }
1832
1833 #ifndef NO_COFF_SYMBOLS
1834
1835 static void
1836 DEFUN(coff_print_symbol,(ignore_abfd, filep, symbol, how),
1837 bfd *ignore_abfd AND
1838 PTR filep AND
1839 asymbol *symbol AND
1840 bfd_print_symbol_type how)
1841 {
1842 FILE *file = (FILE *)filep;
1843 switch (how) {
1844 case bfd_print_symbol_name:
1845 fprintf(file, "%s", symbol->name);
1846 break;
1847 case bfd_print_symbol_more:
1848 fprintf(file, "coff %lx %lx", (unsigned long) coffsymbol(symbol)->native,
1849 (unsigned long) coffsymbol(symbol)->lineno);
1850 break;
1851 case bfd_print_symbol_nm:
1852
1853 {
1854 CONST char *section_name = symbol->section->name;
1855 bfd_print_symbol_vandf((PTR) file, symbol);
1856
1857
1858 fprintf(file, " %-5s %s %s %s",
1859 section_name,
1860 coffsymbol(symbol)->native ? "n" : "g",
1861 coffsymbol(symbol)->lineno ? "l" : " ",
1862 symbol->name);
1863 }
1864
1865
1866 break;
1867 case bfd_print_symbol_all:
1868 /* Print out the symbols in a reasonable way */
1869 {
1870 CONST char *section_name = symbol->section->name;
1871
1872
1873 if (coffsymbol(symbol)->native)
1874 {
1875 unsigned int aux;
1876 combined_entry_type *combined = coffsymbol(symbol)->native;
1877 combined_entry_type *root = obj_raw_syments(ignore_abfd);
1878
1879 fprintf(file,"[%3d]",
1880 combined - root);
1881
1882
1883 fprintf(file, "(sc %2d)(fl%4x)(ty%3x)(sc%3d) nx(%d) %08x %s",
1884 combined->u.syment.n_scnum,
1885 combined->u.syment.n_flags,
1886 combined->u.syment.n_type,
1887 combined->u.syment.n_sclass,
1888 combined->u.syment.n_numaux,
1889 combined->u.syment.n_value,
1890 symbol->name
1891 );
1892 for (aux = 0; aux < combined->u.syment.n_numaux; aux++)
1893 {
1894 fprintf(file,"\n");
1895 switch (combined->u.syment.n_sclass) {
1896 case C_FILE:
1897 fprintf(file, "File ");
1898 break;
1899 default:
1900 fprintf(file, "AUX lnno %x size %x tagndx %x",
1901 combined[aux+1].u.auxent.x_sym.x_misc.x_lnsz.x_lnno,
1902 combined[aux+1].u.auxent.x_sym.x_misc.x_lnsz.x_size,
1903 combined[aux+1].u.auxent.x_sym.x_tagndx.l);
1904 break;
1905
1906 }
1907
1908 }
1909
1910 {
1911 struct lineno_cache_entry *l = coffsymbol(symbol)->lineno;
1912 if (l)
1913 {
1914 printf("\n%s :", l->u.sym->name);
1915 l++;
1916 while (l->line_number)
1917 {
1918 printf("\n%4d : %x",
1919 l->line_number,
1920 l->u.offset);
1921 l++;
1922
1923 }
1924 }
1925 }
1926
1927
1928
1929 }
1930
1931 else {
1932 bfd_print_symbol_vandf((PTR) file, symbol);
1933 fprintf(file, " %-5s %s %s %s",
1934 section_name,
1935 coffsymbol(symbol)->native ? "n" : "g",
1936 coffsymbol(symbol)->lineno ? "l" : " ",
1937 symbol->name);
1938 }
1939
1940 }
1941
1942 }
1943 }
1944
1945 #endif /* NO_COFF_SYMBOLS */
1946
1947 /* Set flags and magic number of a coff file from architecture and machine
1948 type. Result is true if we can represent the arch&type, false if not. */
1949
1950 static boolean
1951 DEFUN(coff_set_flags,(abfd, magicp, flagsp),
1952 bfd *abfd AND
1953 unsigned *magicp AND
1954 unsigned short *flagsp)
1955 {
1956 switch (bfd_get_arch(abfd)) {
1957
1958 #ifdef I960ROMAGIC
1959
1960 case bfd_arch_i960:
1961
1962 {
1963 unsigned flags;
1964 *magicp = I960ROMAGIC;
1965 /*
1966 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
1967 I960RWMAGIC); FIXME???
1968 */
1969 switch (bfd_get_mach(abfd)) {
1970 case bfd_mach_i960_core:
1971 flags = F_I960CORE;
1972 break;
1973 case bfd_mach_i960_kb_sb:
1974 flags = F_I960KB;
1975 break;
1976 case bfd_mach_i960_mc:
1977 flags = F_I960MC;
1978 break;
1979 case bfd_mach_i960_xa:
1980 flags = F_I960XA;
1981 break;
1982 case bfd_mach_i960_ca:
1983 flags = F_I960CA;
1984 break;
1985 case bfd_mach_i960_ka_sa:
1986 flags = F_I960KA;
1987 break;
1988 default:
1989 return false;
1990 }
1991 *flagsp = flags;
1992 return true;
1993 }
1994 break;
1995 #endif
1996 #ifdef MIPS
1997 case bfd_arch_mips:
1998 *magicp = MIPS_MAGIC_2;
1999 return true;
2000 break;
2001 #endif
2002 #ifdef I386MAGIC
2003 case bfd_arch_i386:
2004 *magicp = I386MAGIC;
2005 return true;
2006 #endif
2007 #ifdef MC68MAGIC
2008 case bfd_arch_m68k:
2009 *magicp = MC68MAGIC;
2010 return true;
2011 #endif
2012
2013 #ifdef MC88MAGIC
2014 case bfd_arch_m88k:
2015 *magicp = MC88OMAGIC;
2016 return true;
2017 break;
2018 #endif
2019 #ifdef H8300MAGIC
2020 case bfd_arch_h8300:
2021 *magicp = H8300MAGIC;
2022 return true;
2023 break;
2024 #endif
2025 #ifdef A29K_MAGIC_BIG
2026 case bfd_arch_a29k:
2027 if (abfd->xvec->byteorder_big_p)
2028 *magicp = A29K_MAGIC_BIG;
2029 else
2030 *magicp = A29K_MAGIC_LITTLE;
2031 return true;
2032 break;
2033 #endif
2034
2035 #ifdef U802TOCMAGIC
2036 case bfd_arch_rs6000:
2037 *magicp = U802TOCMAGIC;
2038 break;
2039 #endif
2040
2041 default: /* Unknown architecture */
2042 /* return false; -- fall through to "return false" below, to avoid
2043 "statement never reached" errors on the one below. */
2044 break;
2045 }
2046
2047 return false;
2048 }
2049
2050
2051 static boolean
2052 DEFUN(coff_set_arch_mach,(abfd, arch, machine),
2053 bfd *abfd AND
2054 enum bfd_architecture arch AND
2055 unsigned long machine)
2056 {
2057 unsigned dummy1;
2058 unsigned short dummy2;
2059 bfd_default_set_arch_mach(abfd, arch, machine);
2060
2061 if (arch != bfd_arch_unknown &&
2062 coff_set_flags(abfd, &dummy1, &dummy2) != true)
2063 return false; /* We can't represent this type */
2064 return true; /* We're easy ... */
2065 }
2066
2067
2068 /* Calculate the file position for each section. */
2069
2070 static void
2071 DEFUN(coff_compute_section_file_positions,(abfd),
2072 bfd *abfd)
2073 {
2074 asection *current;
2075 asection *previous = (asection *)NULL;
2076 file_ptr sofar = FILHSZ;
2077 file_ptr old_sofar;
2078 if (bfd_get_start_address(abfd))
2079 {
2080 /* A start address may have been added to the original file. In this
2081 case it will need an optional header to record it. */
2082 abfd->flags |= EXEC_P;
2083 }
2084
2085 if (abfd->flags & EXEC_P)
2086 sofar += AOUTSZ;
2087
2088 sofar += abfd->section_count * SCNHSZ;
2089 for (current = abfd->sections;
2090 current != (asection *)NULL;
2091 current = current->next) {
2092
2093 /* Only deal with sections which have contents */
2094 if (!(current->flags & SEC_HAS_CONTENTS))
2095 continue;
2096
2097 /* Align the sections in the file to the same boundary on
2098 which they are aligned in virtual memory. I960 doesn't
2099 do this (FIXME) so we can stay in sync with Intel. 960
2100 doesn't yet page from files... */
2101 #ifndef I960
2102 {
2103 /* make sure this section is aligned on the right boundary - by
2104 padding the previous section up if necessary */
2105
2106 old_sofar= sofar;
2107 sofar = BFD_ALIGN(sofar, 1 << current->alignment_power);
2108 if (previous != (asection *)NULL) {
2109 previous->_raw_size += sofar - old_sofar;
2110 }
2111 }
2112
2113 #endif
2114 /* FIXME, in demand paged files, the low order bits of the file
2115 offset must match the low order bits of the virtual address.
2116 "Low order" is apparently implementation defined. Add code
2117 here to round sofar up to match the virtual address. */
2118
2119 current->filepos = sofar;
2120
2121 /* make sure that this section is of the right size too */
2122 old_sofar = sofar += current->_raw_size;
2123 sofar = BFD_ALIGN(sofar, 1 << current->alignment_power);
2124 current->_raw_size += sofar - old_sofar ;
2125
2126 previous = current;
2127 }
2128 obj_relocbase(abfd) = sofar;
2129 }
2130
2131
2132
2133
2134 /* SUPPRESS 558 */
2135 /* SUPPRESS 529 */
2136 static boolean
2137 DEFUN(coff_write_object_contents,(abfd),
2138 bfd *abfd)
2139 {
2140 asection *current;
2141 unsigned int count;
2142
2143 boolean hasrelocs = false;
2144 boolean haslinno = false;
2145 file_ptr reloc_base;
2146 file_ptr lineno_base;
2147 file_ptr sym_base;
2148 file_ptr scn_base;
2149 file_ptr data_base;
2150 unsigned long reloc_size = 0;
2151 unsigned long lnno_size = 0;
2152 asection *text_sec = NULL;
2153 asection *data_sec = NULL;
2154 asection *bss_sec = NULL;
2155
2156 struct internal_filehdr internal_f;
2157 struct internal_aouthdr internal_a;
2158
2159
2160 bfd_error = system_call_error;
2161 /* Number the output sections, starting from one on the first section
2162 with a name which doesn't start with a * */
2163 count = 1;
2164 for (current = abfd->sections; current != (asection *)NULL;
2165 current = current->next)
2166 {
2167 current->target_index = count;
2168 }
2169
2170
2171
2172
2173
2174 if(abfd->output_has_begun == false) {
2175 coff_compute_section_file_positions(abfd);
2176 }
2177
2178 if (abfd->sections != (asection *)NULL) {
2179 scn_base = abfd->sections->filepos;
2180 }
2181 else {
2182 scn_base = 0;
2183 }
2184 if (bfd_seek(abfd, scn_base, SEEK_SET) != 0)
2185 return false;
2186 reloc_base = obj_relocbase(abfd);
2187
2188 /* Make a pass through the symbol table to count line number entries and
2189 put them into the correct asections */
2190
2191 #ifndef NO_COFF_LINENOS
2192 coff_count_linenumbers(abfd);
2193 #endif
2194 data_base = scn_base;
2195
2196 /* Work out the size of the reloc and linno areas */
2197
2198 for (current = abfd->sections; current != NULL; current =
2199 current->next)
2200 {
2201 /* We give section headers to +ve indexes */
2202 if (current->target_index > 0)
2203 {
2204
2205 reloc_size += current->reloc_count * RELSZ;
2206 #ifndef NO_COFF_LINENOS
2207 lnno_size += current->lineno_count * LINESZ;
2208 #endif
2209 data_base += SCNHSZ;
2210 }
2211
2212 }
2213
2214 lineno_base = reloc_base + reloc_size;
2215 sym_base = lineno_base + lnno_size;
2216
2217 /* Indicate in each section->line_filepos its actual file address */
2218 for (current = abfd->sections; current != NULL; current =
2219 current->next)
2220 {
2221 if (current->target_index > 0)
2222 {
2223
2224 if (current->lineno_count) {
2225 current->line_filepos = lineno_base;
2226 current->moving_line_filepos = lineno_base;
2227 #ifndef NO_COFF_LINENOS
2228 lineno_base += current->lineno_count * LINESZ;
2229 #endif
2230 }
2231 else {
2232 current->line_filepos = 0;
2233 }
2234 if (current->reloc_count) {
2235 current->rel_filepos = reloc_base;
2236 reloc_base += current->reloc_count * RELSZ;
2237 }
2238 else {
2239 current->rel_filepos = 0;
2240 }
2241 }
2242 }
2243
2244
2245
2246 /* Write section headers to the file. */
2247 internal_f.f_nscns = 0;
2248 bfd_seek(abfd,
2249 (file_ptr) ((abfd->flags & EXEC_P) ?
2250 (FILHSZ + AOUTSZ) : FILHSZ),
2251 SEEK_SET);
2252
2253 {
2254 #if 0
2255 unsigned int pad = abfd->flags & D_PAGED ? data_base : 0;
2256 #endif
2257 unsigned int pad = 0;
2258
2259 for (current = abfd->sections;
2260 current != NULL;
2261 current = current->next) {
2262 struct internal_scnhdr section;
2263 if (current->target_index > 0)
2264 {
2265 internal_f.f_nscns ++;
2266 strncpy(&(section.s_name[0]), current->name, 8);
2267 section.s_vaddr = current->vma + pad;
2268 section.s_paddr = current->vma + pad;
2269 section.s_size = current->_raw_size - pad;
2270 /*
2271 If this section has no size or is unloadable then the scnptr
2272 will be 0 too
2273 */
2274 if (current->_raw_size - pad == 0 ||
2275 (current->flags & SEC_LOAD) == 0) {
2276 section.s_scnptr = 0;
2277 }
2278 else {
2279 section.s_scnptr = current->filepos;
2280 }
2281 section.s_relptr = current->rel_filepos;
2282 section.s_lnnoptr = current->line_filepos;
2283 section.s_nreloc = current->reloc_count;
2284 section.s_nlnno = current->lineno_count;
2285 if (current->reloc_count != 0)
2286 hasrelocs = true;
2287 if (current->lineno_count != 0)
2288 haslinno = true;
2289
2290 section.s_flags = sec_to_styp_flags(current->name,current->flags);
2291
2292 if (!strcmp(current->name, _TEXT)) {
2293 text_sec = current;
2294 } else if (!strcmp(current->name, _DATA)) {
2295 data_sec = current;
2296 } else if (!strcmp(current->name, _BSS)) {
2297 bss_sec = current;
2298 }
2299
2300 #ifdef I960
2301 section.s_align = (current->alignment_power
2302 ? 1 << current->alignment_power
2303 : 0);
2304
2305 #endif
2306 {
2307 SCNHDR buff;
2308
2309 coff_swap_scnhdr_out(abfd, &section, &buff);
2310 bfd_write((PTR) (&buff), 1, SCNHSZ, abfd);
2311
2312 }
2313
2314 pad = 0;
2315 }
2316 }
2317 }
2318
2319
2320 /* OK, now set up the filehdr... */
2321
2322 /* Don't include the internal abs section in the section count */
2323
2324 /*
2325 We will NOT put a fucking timestamp in the header here. Every time you
2326 put it back, I will come in and take it out again. I'm sorry. This
2327 field does not belong here. We fill it with a 0 so it compares the
2328 same but is not a reasonable time. -- gnu@cygnus.com
2329 */
2330 /*
2331 Well, I like it, and now we have *customers* who have requested it,
2332 so I'm conditionally compiling it in.
2333
2334 sac@cygnus.com
2335 */
2336 #ifndef NOCOFF_TIMESTAMP
2337 internal_f.f_timdat = time(0);
2338 #else
2339 internal_f.f_timdat = 0;
2340 #endif
2341
2342 if (bfd_get_symcount(abfd) != 0)
2343 internal_f.f_symptr = sym_base;
2344 else
2345 internal_f.f_symptr = 0;
2346
2347 internal_f.f_flags = 0;
2348
2349 if (abfd->flags & EXEC_P)
2350 internal_f.f_opthdr = AOUTSZ;
2351 else
2352 internal_f.f_opthdr = 0;
2353
2354 if (!hasrelocs)
2355 internal_f.f_flags |= F_RELFLG;
2356 if (!haslinno)
2357 internal_f.f_flags |= F_LNNO;
2358 if (0 == bfd_get_symcount(abfd))
2359 internal_f.f_flags |= F_LSYMS;
2360 if (abfd->flags & EXEC_P)
2361 internal_f.f_flags |= F_EXEC;
2362
2363 if (!abfd->xvec->byteorder_big_p)
2364 internal_f.f_flags |= F_AR32WR;
2365 else
2366 internal_f.f_flags |= F_AR32W;
2367
2368 /*
2369 FIXME, should do something about the other byte orders and
2370 architectures.
2371 */
2372
2373 /* Set up architecture-dependent stuff */
2374
2375 { unsigned int magic = 0;
2376 unsigned short flags = 0;
2377 coff_set_flags(abfd, &magic, &flags);
2378 internal_f.f_magic = magic;
2379 internal_f.f_flags |= flags;
2380 /* ...and the "opt"hdr... */
2381
2382 #ifdef A29K
2383 # ifdef ULTRA3 /* NYU's machine */
2384 /* FIXME: This is a bogus check. I really want to see if there
2385 * is a .shbss or a .shdata section, if so then set the magic
2386 * number to indicate a shared data executable.
2387 */
2388 if (internal_f.f_nscns >= 7)
2389 internal_a.magic = SHMAGIC; /* Shared magic */
2390 else
2391 # endif /* ULTRA3 */
2392 internal_a.magic = NMAGIC; /* Assume separate i/d */
2393 #define __A_MAGIC_SET__
2394 #endif /* A29K */
2395 #ifdef I960
2396 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
2397 #define __A_MAGIC_SET__
2398 #endif /* I960 */
2399 #if M88
2400 #define __A_MAGIC_SET__
2401 internal_a.magic = PAGEMAGICBCS;
2402 #endif /* M88 */
2403
2404 #if M68 || I386 || MIPS
2405 #define __A_MAGIC_SET__
2406 /* Never was anything here for the 68k */
2407 #endif /* M88 */
2408
2409 #if RS6000COFF_C
2410 #define __A_MAGIC_SET__
2411 internal_a.magic = (abfd->flags & D_PAGED)? RS6K_AOUTHDR_ZMAGIC:
2412 (abfd->flags & WP_TEXT)? RS6K_AOUTHDR_NMAGIC:
2413 RS6K_AOUTHDR_OMAGIC;
2414 #endif
2415
2416 #ifndef __A_MAGIC_SET__
2417 # include "Your aouthdr magic number is not being set!"
2418 #else
2419 # undef __A_MAGIC_SET__
2420 #endif
2421 }
2422 /* Now should write relocs, strings, syms */
2423 obj_sym_filepos(abfd) = sym_base;
2424
2425 #ifndef NO_COFF_SYMBOLS
2426 if (bfd_get_symcount(abfd) != 0) {
2427 coff_renumber_symbols(abfd);
2428 coff_mangle_symbols(abfd);
2429 coff_write_symbols(abfd);
2430 coff_write_linenumbers(abfd);
2431 coff_write_relocs(abfd);
2432 }
2433 #endif /* NO_COFF_SYMBOLS */
2434 if (text_sec) {
2435 internal_a.tsize = bfd_get_section_size_before_reloc(text_sec);
2436 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
2437 }
2438 if (data_sec) {
2439 internal_a.dsize = bfd_get_section_size_before_reloc(data_sec);
2440 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
2441 }
2442 if (bss_sec) {
2443 internal_a.bsize = bfd_get_section_size_before_reloc(bss_sec);
2444 }
2445
2446 internal_a.entry = bfd_get_start_address(abfd);
2447 internal_f.f_nsyms = bfd_get_symcount(abfd);
2448
2449 /* now write them */
2450 if (bfd_seek(abfd, 0L, SEEK_SET) != 0)
2451 return false;
2452 {
2453 FILHDR buff;
2454 coff_swap_filehdr_out(abfd, (PTR)&internal_f, (PTR)&buff);
2455 bfd_write((PTR) &buff, 1, FILHSZ, abfd);
2456 }
2457 if (abfd->flags & EXEC_P) {
2458 AOUTHDR buff;
2459 coff_swap_aouthdr_out(abfd, (PTR)&internal_a, (PTR)&buff);
2460 bfd_write((PTR) &buff, 1, AOUTSZ, abfd);
2461 }
2462 return true;
2463 }
2464
2465 #ifndef NO_COFF_SYMBOLS
2466
2467 /*
2468 this function transforms the offsets into the symbol table into
2469 pointers to syments.
2470 */
2471
2472
2473 static void
2474 DEFUN(coff_pointerize_aux,(ignore_abfd, table_base, type, class, auxent),
2475 bfd *ignore_abfd AND
2476 combined_entry_type *table_base AND
2477 int type AND
2478 int class AND
2479 combined_entry_type *auxent)
2480 {
2481 /* Don't bother if this is a file or a section */
2482 if (class == C_STAT && type == T_NULL) return;
2483 if (class == C_FILE) return;
2484
2485 /* Otherwise patch up */
2486 if (ISFCN(type) || ISTAG(class) || class == C_BLOCK) {
2487 auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = table_base +
2488 auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l;
2489 auxent->fix_end = 1;
2490 }
2491 if (auxent->u.auxent.x_sym.x_tagndx.l != 0) {
2492 auxent->u.auxent.x_sym.x_tagndx.p =
2493 table_base + auxent->u.auxent.x_sym.x_tagndx.l;
2494 auxent->fix_tag = 1;
2495 }
2496 }
2497
2498 #endif /* NO_COFF_SYMBOLS */
2499
2500 static boolean
2501 DEFUN(coff_set_section_contents,(abfd, section, location, offset, count),
2502 bfd *abfd AND
2503 sec_ptr section AND
2504 PTR location AND
2505 file_ptr offset AND
2506 bfd_size_type count)
2507 {
2508 if (abfd->output_has_begun == false) /* set by bfd.c handler */
2509 coff_compute_section_file_positions(abfd);
2510
2511 bfd_seek(abfd, (file_ptr) (section->filepos + offset), SEEK_SET);
2512
2513 if (count != 0) {
2514 return (bfd_write(location, 1, count, abfd) == count) ? true : false;
2515 }
2516 return true;
2517 }
2518 #if 0
2519 static boolean
2520 coff_close_and_cleanup(abfd)
2521 bfd *abfd;
2522 {
2523 if (!bfd_read_p(abfd))
2524 switch (abfd->format) {
2525 case bfd_archive:
2526 if (!_bfd_write_archive_contents(abfd))
2527 return false;
2528 break;
2529 case bfd_object:
2530 if (!coff_write_object_contents(abfd))
2531 return false;
2532 break;
2533 default:
2534 bfd_error = invalid_operation;
2535 return false;
2536 }
2537
2538 /* We depend on bfd_close to free all the memory on the obstack. */
2539 /* FIXME if bfd_release is not using obstacks! */
2540 return true;
2541 }
2542
2543 #endif
2544 static PTR
2545 buy_and_read(abfd, where, seek_direction, size)
2546 bfd *abfd;
2547 file_ptr where;
2548 int seek_direction;
2549 size_t size;
2550 {
2551 PTR area = (PTR) bfd_alloc(abfd, size);
2552 if (!area) {
2553 bfd_error = no_memory;
2554 return (NULL);
2555 }
2556 bfd_seek(abfd, where, seek_direction);
2557 if (bfd_read(area, 1, size, abfd) != size) {
2558 bfd_error = system_call_error;
2559 return (NULL);
2560 } /* on error */
2561 return (area);
2562 } /* buy_and_read() */
2563
2564
2565 #ifndef NO_COFF_SYMBOLS
2566
2567 static char *
2568 DEFUN(build_string_table,(abfd),
2569 bfd *abfd)
2570 {
2571 char string_table_size_buffer[4];
2572 unsigned int string_table_size;
2573 char *string_table;
2574
2575 /* At this point we should be "seek"'d to the end of the
2576 symbols === the symbol table size. */
2577 if (bfd_read((char *) string_table_size_buffer,
2578 sizeof(string_table_size_buffer),
2579 1, abfd) != sizeof(string_table_size)) {
2580 bfd_error = system_call_error;
2581 return (NULL);
2582 } /* on error */
2583
2584 string_table_size = bfd_h_get_32(abfd, (bfd_byte *) string_table_size_buffer);
2585
2586 if ((string_table = (PTR) bfd_alloc(abfd, string_table_size -= 4)) == NULL) {
2587 bfd_error = no_memory;
2588 return (NULL);
2589 } /* on mallocation error */
2590 if (bfd_read(string_table, string_table_size, 1, abfd) != string_table_size) {
2591 bfd_error = system_call_error;
2592 return (NULL);
2593 }
2594 return string_table;
2595 }
2596
2597 /* Allocate space for the ".debug" section, and read it.
2598 We did not read the debug section until now, because
2599 we didn't want to go to the trouble until someone needed it. */
2600
2601 static char *
2602 DEFUN(build_debug_section,(abfd),
2603 bfd *abfd)
2604 {
2605 char *debug_section;
2606 long position;
2607
2608 asection *sect = bfd_get_section_by_name (abfd, ".debug");
2609
2610 if (!sect) {
2611 bfd_error = no_debug_section;
2612 return NULL;
2613 }
2614
2615 debug_section = (PTR) bfd_alloc (abfd,
2616 bfd_get_section_size_before_reloc (sect));
2617 if (debug_section == NULL) {
2618 bfd_error = no_memory;
2619 return NULL;
2620 }
2621
2622 /* Seek to the beginning of the `.debug' section and read it.
2623 Save the current position first; it is needed by our caller.
2624 Then read debug section and reset the file pointer. */
2625
2626 position = bfd_tell (abfd);
2627 bfd_seek (abfd, sect->filepos, SEEK_SET);
2628 if (bfd_read (debug_section,
2629 bfd_get_section_size_before_reloc (sect), 1, abfd)
2630 != bfd_get_section_size_before_reloc(sect)) {
2631 bfd_error = system_call_error;
2632 return NULL;
2633 }
2634 bfd_seek (abfd, position, SEEK_SET);
2635 return debug_section;
2636 }
2637
2638
2639 /* Return a pointer to a malloc'd copy of 'name'. 'name' may not be
2640 \0-terminated, but will not exceed 'maxlen' characters. The copy *will*
2641 be \0-terminated. */
2642 static char *
2643 DEFUN(copy_name,(abfd, name, maxlen),
2644 bfd *abfd AND
2645 char *name AND
2646 int maxlen)
2647 {
2648 int len;
2649 char *newname;
2650
2651 for (len = 0; len < maxlen; ++len) {
2652 if (name[len] == '\0') {
2653 break;
2654 }
2655 }
2656
2657 if ((newname = (PTR) bfd_alloc(abfd, len+1)) == NULL) {
2658 bfd_error = no_memory;
2659 return (NULL);
2660 }
2661 strncpy(newname, name, len);
2662 newname[len] = '\0';
2663 return newname;
2664 }
2665
2666
2667 /* Read a symbol table into freshly bfd_allocated memory, swap it, and
2668 knit the symbol names into a normalized form. By normalized here I
2669 mean that all symbols have an n_offset pointer that points to a null-
2670 terminated string. */
2671
2672 #ifndef SYMNAME_IN_DEBUG
2673 #define SYMNAME_IN_DEBUG(x) 0
2674 #endif
2675
2676 static combined_entry_type *
2677 DEFUN(get_normalized_symtab,(abfd),
2678 bfd *abfd)
2679 {
2680 combined_entry_type *internal;
2681 combined_entry_type *internal_ptr;
2682 combined_entry_type *symbol_ptr;
2683 combined_entry_type *internal_end;
2684 SYMENT *raw;
2685 SYMENT *raw_src;
2686 SYMENT *raw_end;
2687 char *string_table = NULL;
2688 char *debug_section = NULL;
2689 unsigned long size;
2690
2691 unsigned int raw_size;
2692 if (obj_raw_syments(abfd) != (combined_entry_type *)NULL) {
2693 return obj_raw_syments(abfd);
2694 }
2695 if ((size = bfd_get_symcount(abfd) * sizeof(combined_entry_type)) == 0) {
2696 bfd_error = no_symbols;
2697 return (NULL);
2698 }
2699
2700 internal = (combined_entry_type *)bfd_alloc(abfd, size);
2701 internal_end = internal + bfd_get_symcount(abfd);
2702
2703 raw_size = bfd_get_symcount(abfd) * SYMESZ;
2704 raw = (SYMENT *)bfd_alloc(abfd,raw_size);
2705
2706 if (bfd_seek(abfd, obj_sym_filepos(abfd), SEEK_SET) == -1
2707 || bfd_read((PTR)raw, raw_size, 1, abfd) != raw_size) {
2708 bfd_error = system_call_error;
2709 return (NULL);
2710 }
2711 /* mark the end of the symbols */
2712 raw_end = raw + bfd_get_symcount(abfd);
2713 /*
2714 FIXME SOMEDAY. A string table size of zero is very weird, but
2715 probably possible. If one shows up, it will probably kill us.
2716 */
2717
2718 /* Swap all the raw entries */
2719 for (raw_src = raw, internal_ptr = internal;
2720 raw_src < raw_end;
2721 raw_src++, internal_ptr++) {
2722
2723 unsigned int i;
2724 coff_swap_sym_in(abfd, (PTR)raw_src, (PTR)&internal_ptr->u.syment);
2725 internal_ptr->fix_tag = 0;
2726 internal_ptr->fix_end = 0;
2727 symbol_ptr = internal_ptr;
2728
2729 for (i = 0;
2730 i < symbol_ptr->u.syment.n_numaux;
2731 i++)
2732 {
2733 internal_ptr++;
2734 raw_src++;
2735
2736 internal_ptr->fix_tag = 0;
2737 internal_ptr->fix_end = 0;
2738 coff_swap_aux_in(abfd, (char *)(raw_src),
2739 symbol_ptr->u.syment.n_type,
2740 symbol_ptr->u.syment.n_sclass,
2741 &(internal_ptr->u.auxent));
2742 /* Remember that bal entries arn't pointerized */
2743 if (i != 1 || symbol_ptr->u.syment.n_sclass != C_LEAFPROC)
2744 {
2745
2746 coff_pointerize_aux(abfd,
2747 internal,
2748 symbol_ptr->u.syment.n_type,
2749 symbol_ptr->u.syment.n_sclass,
2750 internal_ptr);
2751 }
2752
2753 }
2754 }
2755
2756 /* Free all the raw stuff */
2757 bfd_release(abfd, raw);
2758
2759 for (internal_ptr = internal; internal_ptr < internal_end;
2760 internal_ptr ++)
2761 {
2762 if (internal_ptr->u.syment.n_sclass == C_FILE) {
2763 /* make a file symbol point to the name in the auxent, since
2764 the text ".file" is redundant */
2765 if ((internal_ptr+1)->u.auxent.x_file.x_n.x_zeroes == 0) {
2766 /* the filename is a long one, point into the string table */
2767 if (string_table == NULL) {
2768 string_table = build_string_table(abfd);
2769 }
2770
2771 internal_ptr->u.syment._n._n_n._n_offset =
2772 (int) (string_table - 4 +
2773 (internal_ptr+1)->u.auxent.x_file.x_n.x_offset);
2774 }
2775 else {
2776 /* ordinary short filename, put into memory anyway */
2777 internal_ptr->u.syment._n._n_n._n_offset = (int)
2778 copy_name(abfd, (internal_ptr+1)->u.auxent.x_file.x_fname,
2779 FILNMLEN);
2780 }
2781 }
2782 else {
2783 if (internal_ptr->u.syment._n._n_n._n_zeroes != 0) {
2784 /* This is a "short" name. Make it long. */
2785 unsigned long i = 0;
2786 char *newstring = NULL;
2787
2788 /* find the length of this string without walking into memory
2789 that isn't ours. */
2790 for (i = 0; i < 8; ++i) {
2791 if (internal_ptr->u.syment._n._n_name[i] == '\0') {
2792 break;
2793 } /* if end of string */
2794 } /* possible lengths of this string. */
2795
2796 if ((newstring = (PTR) bfd_alloc(abfd, ++i)) == NULL) {
2797 bfd_error = no_memory;
2798 return (NULL);
2799 } /* on error */
2800 bzero(newstring, i);
2801 strncpy(newstring, internal_ptr->u.syment._n._n_name, i-1);
2802 internal_ptr->u.syment._n._n_n._n_offset = (int) newstring;
2803 internal_ptr->u.syment._n._n_n._n_zeroes = 0;
2804 }
2805 else if (!SYMNAME_IN_DEBUG(&internal_ptr->u.syment)) {
2806 /* Long name already. Point symbol at the string in the table. */
2807 if (string_table == NULL) {
2808 string_table = build_string_table(abfd);
2809 }
2810 internal_ptr->u.syment._n._n_n._n_offset = (int)
2811 (string_table - 4 + internal_ptr->u.syment._n._n_n._n_offset);
2812 }
2813 else {
2814 /* Long name in debug section. Very similar. */
2815 if (debug_section == NULL) {
2816 debug_section = build_debug_section(abfd);
2817 }
2818 internal_ptr->u.syment._n._n_n._n_offset = (int)
2819 (debug_section + internal_ptr->u.syment._n._n_n._n_offset);
2820 }
2821 }
2822 internal_ptr += internal_ptr->u.syment.n_numaux;
2823 }
2824
2825 obj_raw_syments(abfd) = internal;
2826
2827 return (internal);
2828 } /* get_normalized_symtab() */
2829
2830 #endif /* NO_COFF_SYMBOLS */
2831
2832 static
2833 struct sec *
2834 DEFUN(section_from_bfd_index,(abfd, index),
2835 bfd *abfd AND
2836 int index)
2837 {
2838 struct sec *answer = abfd->sections;
2839
2840 if (index == N_ABS)
2841 {
2842 return &bfd_abs_section;
2843 }
2844 if (index == N_UNDEF)
2845 {
2846 return &bfd_und_section;
2847 }
2848 if(index == N_DEBUG)
2849 {
2850 return &bfd_debug_section;
2851
2852 }
2853
2854 while (answer) {
2855 if (answer->target_index == index)
2856 return answer;
2857 answer = answer->next;
2858 }
2859 BFD_ASSERT(0);
2860 return &bfd_und_section; /* For gcc -W and lint. Never executed. */
2861 }
2862
2863 #ifndef NO_COFF_LINENOS
2864
2865 /*
2866 SUBSUBSECTION
2867 Reading Linenumbers
2868
2869 Creating the linenumber table is done by reading in the entire
2870 coff linenumber table, and creating another table for internal use.
2871
2872 A coff line number table is structured so that each function
2873 is marked as having a line number of 0. Each line within the
2874 function is an offset from the first line in the function. The
2875 base of the line number information for the table is stored in
2876 the symbol associated with the function.
2877
2878 The information is copied from the external to the internal
2879 table, and each symbol which marks a function is marked by
2880 pointing its...
2881
2882 How does this work ?
2883
2884 */
2885
2886 static boolean
2887 coff_slurp_line_table(abfd, asect)
2888 bfd *abfd;
2889 asection *asect;
2890 {
2891 LINENO *native_lineno;
2892 alent *lineno_cache;
2893
2894 BFD_ASSERT(asect->lineno == (alent *) NULL);
2895
2896 native_lineno = (LINENO *) buy_and_read(abfd,
2897 asect->line_filepos,
2898 SEEK_SET,
2899 (size_t) (LINESZ *
2900 asect->lineno_count));
2901 lineno_cache =
2902 (alent *) bfd_alloc(abfd, (size_t) ((asect->lineno_count + 1) * sizeof(alent)));
2903 if (lineno_cache == NULL) {
2904 bfd_error = no_memory;
2905 return false;
2906 } else {
2907 unsigned int counter = 0;
2908 alent *cache_ptr = lineno_cache;
2909 LINENO *src = native_lineno;
2910
2911 while (counter < asect->lineno_count) {
2912 struct internal_lineno dst;
2913 coff_swap_lineno_in(abfd, src, &dst);
2914 cache_ptr->line_number = dst.l_lnno;
2915
2916 if (cache_ptr->line_number == 0) {
2917 coff_symbol_type *sym =
2918 (coff_symbol_type *) (dst.l_addr.l_symndx
2919 + obj_raw_syments(abfd))->u.syment._n._n_n._n_zeroes;
2920 cache_ptr->u.sym = (asymbol *) sym;
2921 sym->lineno = cache_ptr;
2922 }
2923 else {
2924 cache_ptr->u.offset = dst.l_addr.l_paddr
2925 - bfd_section_vma(abfd, asect);
2926 } /* If no linenumber expect a symbol index */
2927
2928 cache_ptr++;
2929 src++;
2930 counter++;
2931 }
2932 cache_ptr->line_number = 0;
2933
2934 }
2935 asect->lineno = lineno_cache;
2936 /* FIXME, free native_lineno here, or use alloca or something. */
2937 return true;
2938 } /* coff_slurp_line_table() */
2939
2940 #endif /* NO_COFF_LINENOS */
2941
2942 #ifndef NO_COFF_LINENOS
2943
2944 static boolean
2945 DEFUN(coff_slurp_symbol_table,(abfd),
2946 bfd *abfd)
2947 {
2948 combined_entry_type *native_symbols;
2949 coff_symbol_type *cached_area;
2950 unsigned int *table_ptr;
2951
2952 unsigned int number_of_symbols = 0;
2953 if (obj_symbols(abfd))
2954 return true;
2955 bfd_seek(abfd, obj_sym_filepos(abfd), SEEK_SET);
2956
2957 /* Read in the symbol table */
2958 if ((native_symbols = get_normalized_symtab(abfd)) == NULL) {
2959 return (false);
2960 } /* on error */
2961
2962 /* Allocate enough room for all the symbols in cached form */
2963 cached_area =
2964 (coff_symbol_type *)
2965 bfd_alloc(abfd, (size_t) (bfd_get_symcount(abfd) * sizeof(coff_symbol_type)));
2966
2967 if (cached_area == NULL) {
2968 bfd_error = no_memory;
2969 return false;
2970 } /* on error */
2971 table_ptr =
2972 (unsigned int *)
2973 bfd_alloc(abfd, (size_t) (bfd_get_symcount(abfd) * sizeof(unsigned int)));
2974
2975 if (table_ptr == NULL) {
2976 bfd_error = no_memory;
2977 return false;
2978 }
2979 else
2980 {
2981 coff_symbol_type *dst = cached_area;
2982 unsigned int last_native_index = bfd_get_symcount(abfd);
2983 unsigned int this_index = 0;
2984 while (this_index < last_native_index) {
2985 combined_entry_type *src = native_symbols + this_index;
2986 table_ptr[this_index] = number_of_symbols;
2987 dst->symbol.the_bfd = abfd;
2988
2989 dst->symbol.name = (char *)(src->u.syment._n._n_n._n_offset);
2990 /*
2991 We use the native name field to point to the cached field
2992 */
2993 src->u.syment._n._n_n._n_zeroes = (int) dst;
2994 dst->symbol.section = section_from_bfd_index(abfd,
2995 src->u.syment.n_scnum);
2996 dst->symbol.flags = 0;
2997 dst->done_lineno = false;
2998
2999 switch (src->u.syment.n_sclass) {
3000 #ifdef I960
3001 case C_LEAFEXT:
3002 #if 0
3003 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
3004 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
3005 dst->symbol.flags |= BSF_NOT_AT_END;
3006 #endif
3007 /* Fall through to next case */
3008
3009 #endif
3010
3011 case C_EXT:
3012 #ifdef RS6000COFF_C
3013 case C_HIDEXT:
3014 #endif
3015 if ((src->u.syment.n_scnum) == 0) {
3016 if ((src->u.syment.n_value) == 0) {
3017 dst->symbol.section = &bfd_und_section;
3018 dst->symbol.value= 0;
3019 }
3020 else {
3021 dst->symbol.section = &bfd_com_section;
3022 dst->symbol.value = (src->u.syment.n_value);
3023 }
3024 }
3025 else {
3026 /*
3027 Base the value as an index from the base of the
3028 section
3029 */
3030
3031 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
3032 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
3033
3034 if (ISFCN((src->u.syment.n_type))) {
3035 /*
3036 A function ext does not go at the end of a file
3037 */
3038 dst->symbol.flags |= BSF_NOT_AT_END;
3039 }
3040 }
3041
3042
3043 break;
3044
3045 case C_STAT: /* static */
3046 #ifdef I960
3047 case C_LEAFSTAT: /* static leaf procedure */
3048 #endif
3049 case C_LABEL: /* label */
3050 if (src->u.syment.n_scnum == -2)
3051 dst->symbol.flags = BSF_DEBUGGING;
3052 else
3053 dst->symbol.flags = BSF_LOCAL;
3054 /*
3055 Base the value as an index from the base of the section, if
3056 there is one
3057 */
3058 if (dst->symbol.section)
3059 dst->symbol.value = (src->u.syment.n_value) -
3060 dst->symbol.section->vma;
3061 else
3062 dst->symbol.value = (src->u.syment.n_value) ;
3063 break;
3064
3065 case C_MOS: /* member of structure */
3066 case C_EOS: /* end of structure */
3067 #ifdef NOTDEF /* C_AUTOARG has the same value */
3068 #ifdef C_GLBLREG
3069 case C_GLBLREG: /* A29k-specific storage class */
3070 #endif
3071 #endif
3072 case C_REGPARM: /* register parameter */
3073 case C_REG: /* register variable */
3074 #ifdef C_AUTOARG
3075 case C_AUTOARG: /* 960-specific storage class */
3076 #endif
3077 case C_TPDEF: /* type definition */
3078 case C_ARG:
3079 case C_AUTO: /* automatic variable */
3080 case C_FIELD: /* bit field */
3081 case C_ENTAG: /* enumeration tag */
3082 case C_MOE: /* member of enumeration */
3083 case C_MOU: /* member of union */
3084 case C_UNTAG: /* union tag */
3085 dst->symbol.flags = BSF_DEBUGGING;
3086 dst->symbol.value = (src->u.syment.n_value);
3087 break;
3088
3089 case C_FILE: /* file name */
3090 case C_STRTAG: /* structure tag */
3091 #ifdef RS6000COFF_C
3092 case C_BINCL: /* beginning of include file */
3093 case C_EINCL: /* ending of include file */
3094 case C_GSYM:
3095 case C_LSYM:
3096 case C_PSYM:
3097 case C_RSYM:
3098 case C_RPSYM:
3099 case C_STSYM:
3100 case C_DECL:
3101 case C_ENTRY:
3102 case C_FUN:
3103 case C_BSTAT:
3104 case C_ESTAT:
3105 #endif
3106 dst->symbol.flags = BSF_DEBUGGING;
3107 dst->symbol.value = (src->u.syment.n_value);
3108 break;
3109
3110 case C_BLOCK: /* ".bb" or ".eb" */
3111 case C_FCN: /* ".bf" or ".ef" */
3112 case C_EFCN: /* physical end of function */
3113 dst->symbol.flags = BSF_LOCAL;
3114 /*
3115 Base the value as an index from the base of the section
3116 */
3117 dst->symbol.value = (src->u.syment.n_value) - dst->symbol.section->vma;
3118 break;
3119
3120 case C_NULL:
3121 case C_EXTDEF: /* external definition */
3122 case C_ULABEL: /* undefined label */
3123 case C_USTATIC: /* undefined static */
3124 case C_LINE: /* line # reformatted as symbol table entry */
3125 case C_ALIAS: /* duplicate tag */
3126 case C_HIDDEN: /* ext symbol in dmert public lib */
3127 default:
3128
3129 fprintf(stderr,"Unrecognized storage class %d\n",
3130 src->u.syment.n_sclass);
3131 abort();
3132 dst->symbol.flags = BSF_DEBUGGING;
3133 dst->symbol.value = (src->u.syment.n_value);
3134 break;
3135 }
3136
3137 /* BFD_ASSERT(dst->symbol.flags != 0);*/
3138
3139 dst->native = src;
3140
3141 dst->symbol.udata = 0;
3142 dst->lineno = (alent *) NULL;
3143 this_index += (src->u.syment.n_numaux) + 1;
3144 dst++;
3145 number_of_symbols++;
3146 } /* walk the native symtab */
3147 } /* bfdize the native symtab */
3148
3149 obj_symbols(abfd) = cached_area;
3150 obj_raw_syments(abfd) = native_symbols;
3151
3152 bfd_get_symcount(abfd) = number_of_symbols;
3153 obj_convert(abfd) = table_ptr;
3154 /* Slurp the line tables for each section too */
3155 {
3156 asection *p;
3157 p = abfd->sections;
3158 while (p) {
3159 coff_slurp_line_table(abfd, p);
3160 p = p->next;
3161 }
3162 }
3163 return true;
3164 } /* coff_slurp_symbol_table() */
3165
3166 static unsigned int
3167 coff_get_symtab_upper_bound(abfd)
3168 bfd *abfd;
3169 {
3170 if (!coff_slurp_symbol_table(abfd))
3171 return 0;
3172
3173 return (bfd_get_symcount(abfd) + 1) * (sizeof(coff_symbol_type *));
3174 }
3175
3176
3177 static unsigned int
3178 DEFUN(coff_get_symtab, (abfd, alocation),
3179 bfd *abfd AND
3180 asymbol **alocation)
3181 {
3182 unsigned int counter = 0;
3183 coff_symbol_type *symbase;
3184 coff_symbol_type **location = (coff_symbol_type **) (alocation);
3185 if (!coff_slurp_symbol_table(abfd))
3186 return 0;
3187
3188 symbase = obj_symbols(abfd);
3189 while (counter < bfd_get_symcount(abfd))
3190 {
3191 /* This nasty code looks at the symbol to decide whether or
3192 not it is descibes a constructor/destructor entry point. It
3193 is structured this way to (hopefully) speed non matches */
3194 #if 0
3195 if (0 && symbase->symbol.name[9] == '$')
3196 {
3197 bfd_constructor_entry(abfd,
3198 (asymbol **)location,
3199 symbase->symbol.name[10] == 'I' ?
3200 "CTOR" : "DTOR");
3201 }
3202 #endif
3203 *(location++) = symbase++;
3204 counter++;
3205 }
3206 *location++ = 0;
3207 return bfd_get_symcount(abfd);
3208 }
3209
3210 #endif /* NO_COFF_SYMBOLS */
3211
3212 static unsigned int
3213 coff_get_reloc_upper_bound(abfd, asect)
3214 bfd *abfd;
3215 sec_ptr asect;
3216 {
3217 if (bfd_get_format(abfd) != bfd_object) {
3218 bfd_error = invalid_operation;
3219 return 0;
3220 }
3221 return (asect->reloc_count + 1) * sizeof(arelent *);
3222 }
3223
3224 /*
3225 SUBSUBSECTION
3226 Reading Relocations
3227
3228 Coff relocations are easily transformed into the internal BFD form
3229 (@code{arelent}).
3230
3231 Reading a coff relocation table is done in the following stages:
3232
3233 o The entire coff relocation table is read into memory.
3234
3235 o Each relocation is processed in turn, first it is swapped from the
3236 external to the internal form.
3237
3238 o The symbol referenced in the relocation's symbol index is
3239 turned intoa pointer into the canonical symbol table. Note
3240 that this table is the same as the one returned by a call to
3241 @code{bfd_canonicalize_symtab}. The back end will call the
3242 routine and save the result if a canonicalization hasn't been done.
3243
3244 o The reloc index is turned into a pointer to a howto
3245 structure, in a back end specific way. For instance, the 386
3246 and 960 use the @code{r_type} to directly produce an index
3247 into a howto table vector; the 88k subtracts a number from the
3248 @code{r_type} field and creates an addend field.
3249
3250
3251 */
3252
3253 #ifndef CALC_ADDEND
3254 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
3255 if (ptr && ptr->the_bfd == abfd \
3256 && ((ptr->flags & BSF_OLD_COMMON)== 0)) \
3257 { \
3258 cache_ptr->addend = -(ptr->section->vma + ptr->value); \
3259 } \
3260 else { \
3261 cache_ptr->addend = 0; \
3262 }
3263 #endif
3264
3265 static boolean
3266 DEFUN(coff_slurp_reloc_table,(abfd, asect, symbols),
3267 bfd *abfd AND
3268 sec_ptr asect AND
3269 asymbol **symbols)
3270 {
3271 RELOC *native_relocs;
3272 arelent *reloc_cache;
3273 arelent *cache_ptr;
3274
3275 unsigned int idx;
3276
3277 if (asect->relocation)
3278 return true;
3279 if (asect->reloc_count == 0)
3280 return true;
3281 if (asect->flags & SEC_CONSTRUCTOR)
3282 return true;
3283 #ifndef NO_COFF_SYMBOLS
3284 if (!coff_slurp_symbol_table(abfd))
3285 return false;
3286 #endif
3287 native_relocs =
3288 (RELOC *) buy_and_read(abfd,
3289 asect->rel_filepos,
3290 SEEK_SET,
3291 (size_t) (RELSZ *
3292 asect->reloc_count));
3293 reloc_cache = (arelent *)
3294 bfd_alloc(abfd, (size_t) (asect->reloc_count * sizeof(arelent)));
3295
3296 if (reloc_cache == NULL) {
3297 bfd_error = no_memory;
3298 return false;
3299 }
3300
3301
3302 for (idx = 0; idx < asect->reloc_count; idx ++)
3303 {
3304 #ifdef RELOC_PROCESSING
3305 struct internal_reloc dst;
3306 struct external_reloc *src;
3307
3308 cache_ptr = reloc_cache + idx;
3309 src = native_relocs + idx;
3310 bfd_swap_reloc_in(abfd, src, &dst);
3311
3312 RELOC_PROCESSING(cache_ptr, &dst, symbols, abfd, asect);
3313 #else
3314 struct internal_reloc dst;
3315 asymbol *ptr;
3316 struct external_reloc *src;
3317
3318 cache_ptr = reloc_cache + idx;
3319 src = native_relocs + idx;
3320
3321 bfd_swap_reloc_in(abfd, src, &dst);
3322
3323
3324 cache_ptr->address = dst.r_vaddr;
3325
3326 if (dst.r_symndx != -1)
3327 {
3328 cache_ptr->sym_ptr_ptr = symbols + obj_convert(abfd)[dst.r_symndx];
3329 ptr = *(cache_ptr->sym_ptr_ptr);
3330 }
3331 else
3332 {
3333 cache_ptr->sym_ptr_ptr= bfd_abs_section.symbol_ptr_ptr;
3334 ptr = 0;
3335
3336 }
3337
3338 /*
3339 The symbols definitions that we have read in have been
3340 relocated as if their sections started at 0. But the offsets
3341 refering to the symbols in the raw data have not been
3342 modified, so we have to have a negative addend to compensate.
3343
3344 Note that symbols which used to be common must be left alone */
3345
3346 /* Calculate any reloc addend by looking at the symbol */
3347 CALC_ADDEND(abfd, ptr, dst, cache_ptr);
3348
3349 cache_ptr->address -= asect->vma;
3350 /* !! cache_ptr->section = (asection *) NULL;*/
3351
3352 /* Fill in the cache_ptr->howto field from dst.r_type */
3353 RTYPE2HOWTO(cache_ptr, &dst);
3354 #endif
3355
3356 }
3357
3358 asect->relocation = reloc_cache;
3359 return true;
3360 }
3361
3362
3363 /* This is stupid. This function should be a boolean predicate */
3364 static unsigned int
3365 DEFUN(coff_canonicalize_reloc, (abfd, section, relptr, symbols),
3366 bfd *abfd AND
3367 sec_ptr section AND
3368 arelent **relptr AND
3369 asymbol **symbols)
3370 {
3371 arelent *tblptr = section->relocation;
3372 unsigned int count = 0;
3373
3374
3375 if (section->flags & SEC_CONSTRUCTOR)
3376 {
3377 /* this section has relocs made up by us, they are not in the
3378 file, so take them out of their chain and place them into
3379 the data area provided */
3380 arelent_chain *chain = section->constructor_chain;
3381 for (count = 0; count < section->reloc_count; count ++)
3382 {
3383 *relptr ++ = &chain->relent;
3384 chain = chain->next;
3385 }
3386
3387 }
3388 else
3389 {
3390 coff_slurp_reloc_table(abfd, section, symbols);
3391
3392
3393 tblptr = section->relocation;
3394 if (!tblptr)
3395 return 0;
3396
3397 for (; count++ < section->reloc_count;)
3398 *relptr++ = tblptr++;
3399
3400
3401 }
3402 *relptr = 0;
3403 return section->reloc_count;
3404 }
3405
3406 #ifndef NO_COFF_SYMBOLS
3407
3408 /*
3409 provided a BFD, a section and an offset into the section, calculate and
3410 return the name of the source file and the line nearest to the wanted
3411 location.
3412 */
3413
3414 static boolean
3415 DEFUN(coff_find_nearest_line,(abfd,
3416 section,
3417 ignore_symbols,
3418 offset,
3419 filename_ptr,
3420 functionname_ptr,
3421 line_ptr),
3422 bfd *abfd AND
3423 asection *section AND
3424 asymbol **ignore_symbols AND
3425 bfd_vma offset AND
3426 CONST char **filename_ptr AND
3427 CONST char **functionname_ptr AND
3428 unsigned int *line_ptr)
3429 {
3430 static bfd *cache_abfd;
3431 static asection *cache_section;
3432 static bfd_vma cache_offset;
3433 static unsigned int cache_i;
3434 static alent *cache_l;
3435
3436 unsigned int i = 0;
3437 coff_data_type *cof = coff_data(abfd);
3438 /* Run through the raw syments if available */
3439 combined_entry_type *p;
3440 alent *l;
3441 unsigned int line_base = 0;
3442
3443
3444 *filename_ptr = 0;
3445 *functionname_ptr = 0;
3446 *line_ptr = 0;
3447
3448 /* Don't try and find line numbers in a non coff file */
3449 if (abfd->xvec->flavour != bfd_target_coff_flavour)
3450 return false;
3451
3452 if (cof == NULL)
3453 return false;
3454
3455 p = cof->raw_syments;
3456
3457 for (i = 0; i < cof->raw_syment_count; i++) {
3458 if (p->u.syment.n_sclass == C_FILE) {
3459 /* File name has been moved into symbol */
3460 *filename_ptr = (char *) p->u.syment._n._n_n._n_offset;
3461 break;
3462 }
3463 p += 1 + p->u.syment.n_numaux;
3464 }
3465 /* Now wander though the raw linenumbers of the section */
3466 /*
3467 If this is the same BFD as we were previously called with and this is
3468 the same section, and the offset we want is further down then we can
3469 prime the lookup loop
3470 */
3471 if (abfd == cache_abfd &&
3472 section == cache_section &&
3473 offset >= cache_offset) {
3474 i = cache_i;
3475 l = cache_l;
3476 }
3477 else {
3478 i = 0;
3479 l = section->lineno;
3480 }
3481
3482 for (; i < section->lineno_count; i++) {
3483 if (l->line_number == 0) {
3484 /* Get the symbol this line number points at */
3485 coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym);
3486 *functionname_ptr = coff->symbol.name;
3487 if (coff->native) {
3488 combined_entry_type *s = coff->native;
3489 s = s + 1 + s->u.syment.n_numaux;
3490 /*
3491 S should now point to the .bf of the function
3492 */
3493 if (s->u.syment.n_numaux) {
3494 /*
3495 The linenumber is stored in the auxent
3496 */
3497 union internal_auxent *a = &((s + 1)->u.auxent);
3498 line_base = a->x_sym.x_misc.x_lnsz.x_lnno;
3499 }
3500 }
3501 }
3502 else {
3503 if (l->u.offset > offset)
3504 break;
3505 *line_ptr = l->line_number + line_base + 1;
3506 }
3507 l++;
3508 }
3509
3510 cache_abfd = abfd;
3511 cache_section = section;
3512 cache_offset = offset;
3513 cache_i = i;
3514 cache_l = l;
3515
3516 return true;
3517 }
3518
3519 #ifdef GNU960
3520 file_ptr
3521 coff_sym_filepos(abfd)
3522 bfd *abfd;
3523 {
3524 return obj_sym_filepos(abfd);
3525 }
3526 #endif
3527
3528 #endif /* NO_COFF_SYMBOLS */
3529
3530
3531 static int
3532 DEFUN(coff_sizeof_headers,(abfd, reloc),
3533 bfd *abfd AND
3534 boolean reloc)
3535 {
3536 size_t size;
3537
3538 if (reloc == false) {
3539 size = FILHSZ + AOUTSZ;
3540 }
3541 else {
3542 size = FILHSZ;
3543 }
3544
3545 size += abfd->section_count * SCNHSZ;
3546 return size;
3547 }
3548
3549 static bfd_vma
3550 DEFUN(get_value,(reloc, seclet),
3551 arelent *reloc AND
3552 bfd_seclet_type *seclet)
3553 {
3554 bfd_vma value;
3555 asymbol *symbol = *(reloc->sym_ptr_ptr);
3556 /* A symbol holds a pointer to a section, and an offset from the
3557 base of the section. To relocate, we find where the section will
3558 live in the output and add that in */
3559
3560 if (symbol->section == &bfd_und_section)
3561 {
3562 /* Ouch, this is an undefined symbol.. */
3563 bfd_error_vector.undefined_symbol(reloc, seclet);
3564 value = symbol->value;
3565 }
3566 else
3567 {
3568 value = symbol->value +
3569 symbol->section->output_offset +
3570 symbol->section->output_section->vma;
3571 }
3572
3573
3574 /* Add the value contained in the relocation */
3575 value += (short)((reloc->addend) & 0xffff);
3576
3577 return value;
3578 }
3579
3580 static void
3581 DEFUN(perform_slip,(s, slip, input_section, value),
3582 asymbol **s AND
3583 unsigned int slip AND
3584 asection *input_section AND
3585 bfd_vma value)
3586 {
3587
3588 /* Find all symbols past this point, and make them know
3589 what's happened */
3590 while (*s)
3591 {
3592 asymbol *p = *s;
3593 if (p->section == input_section)
3594 {
3595 /* This was pointing into this section, so mangle it */
3596 if (p->value > value)
3597 {
3598 p->value -=2;
3599 }
3600 }
3601 s++;
3602
3603 }
3604 }
3605 static int
3606 DEFUN(movb1,(input_section, symbols, r, shrink),
3607 asection *input_section AND
3608 asymbol **symbols AND
3609 arelent *r AND
3610 unsigned int shrink)
3611 {
3612 bfd_vma value = get_value(r,0);
3613
3614 if (value >= 0xff00)
3615 {
3616
3617 /* Change the reloc type from 16bit, possible 8 to 8bit
3618 possible 16 */
3619 r->howto = r->howto + 1;
3620 /* The place to relc moves back by one */
3621 r->address -=1;
3622
3623 /* This will be two bytes smaller in the long run */
3624 shrink +=2 ;
3625 perform_slip(symbols, 2, input_section, r->address - shrink +1);
3626
3627
3628 }
3629 return shrink;
3630 }
3631
3632 static int
3633 DEFUN(jmp1,(input_section, symbols, r, shrink),
3634 asection *input_section AND
3635 asymbol **symbols AND
3636 arelent *r AND
3637 unsigned int shrink)
3638 {
3639
3640
3641 bfd_vma value = get_value(r, 0);
3642
3643 bfd_vma dot = input_section->output_section->vma +
3644 input_section->output_offset + r->address;
3645 bfd_vma gap;
3646
3647 /* See if the address we're looking at within 127 bytes of where
3648 we are, if so then we can use a small branch rather than the
3649 jump we were going to */
3650
3651 gap = value - (dot - shrink);
3652
3653
3654 if (-120 < (long)gap && (long)gap < 120 )
3655 {
3656
3657 /* Change the reloc type from 16bit, possible 8 to 8bit
3658 possible 16 */
3659 r->howto = r->howto + 1;
3660 /* The place to relc moves back by one */
3661 r->address -=1;
3662
3663 /* This will be two bytes smaller in the long run */
3664 shrink +=2 ;
3665 perform_slip(symbols, 2, input_section, r->address-shrink +1);
3666
3667
3668 }
3669 return shrink;
3670 }
3671
3672 static boolean
3673 DEFUN(bfd_coff_relax_section,(abfd, i, symbols),
3674 bfd *abfd AND
3675 asection *i AND
3676 asymbol **symbols)
3677 {
3678
3679 /* Get enough memory to hold the stuff */
3680 bfd *input_bfd = i->owner;
3681 asection *input_section = i;
3682 int shrink = 0 ;
3683 boolean new = false;
3684
3685 bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
3686 input_section);
3687 arelent **reloc_vector = (arelent **)bfd_xmalloc(reloc_size);
3688
3689 /* Get the relocs and think about them */
3690 if (bfd_canonicalize_reloc(input_bfd,
3691 input_section,
3692 reloc_vector,
3693 symbols))
3694 {
3695 arelent **parent;
3696 for (parent = reloc_vector; *parent; parent++)
3697 {
3698 arelent *r = *parent;
3699 switch (r->howto->type) {
3700 case R_MOVB2:
3701 case R_JMP2:
3702
3703 shrink+=2;
3704 break;
3705
3706 case R_MOVB1:
3707 shrink = movb1(input_section, symbols, r, shrink);
3708 new = true;
3709
3710 break;
3711 case R_JMP1:
3712 shrink = jmp1(input_section, symbols, r, shrink);
3713 new = true;
3714
3715 break;
3716 }
3717 }
3718
3719 }
3720 input_section->_cooked_size -= shrink;
3721 free((char *)reloc_vector);
3722 return new;
3723 }
3724
3725 static bfd_byte *
3726 DEFUN(bfd_coff_get_relocated_section_contents,(in_abfd, seclet),
3727 bfd *in_abfd AND
3728 bfd_seclet_type *seclet)
3729
3730 {
3731 /* Get enough memory to hold the stuff */
3732 bfd *input_bfd = seclet->u.indirect.section->owner;
3733 asection *input_section = seclet->u.indirect.section;
3734 bfd_byte *data = (bfd_byte *)malloc(input_section->_raw_size);
3735 bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
3736 input_section);
3737 arelent **reloc_vector = (arelent **)bfd_xmalloc(reloc_size);
3738
3739 /* read in the section */
3740 bfd_get_section_contents(input_bfd,
3741 input_section,
3742 data,
3743 0,
3744 input_section->_raw_size);
3745
3746
3747 if (bfd_canonicalize_reloc(input_bfd,
3748 input_section,
3749 reloc_vector,
3750 seclet->u.indirect.symbols) )
3751 {
3752 arelent **parent = reloc_vector;
3753 arelent *reloc ;
3754
3755
3756
3757 unsigned int dst_address = 0;
3758 unsigned int src_address = 0;
3759 unsigned int run;
3760 unsigned int idx;
3761
3762 /* Find how long a run we can do */
3763 while (dst_address < seclet->size)
3764 {
3765
3766 reloc = *parent;
3767 if (reloc)
3768 {
3769 /* Note that the relaxing didn't tie up the addresses in the
3770 relocation, so we use the original address to work out the
3771 run of non-relocated data */
3772 run = reloc->address - src_address;
3773 parent++;
3774
3775 }
3776 else
3777 {
3778 run = seclet->size - dst_address;
3779 }
3780 /* Copy the bytes */
3781 for (idx = 0; idx < run; idx++)
3782 {
3783 data[dst_address++] = data[src_address++];
3784 }
3785
3786 /* Now do the relocation */
3787
3788 if (reloc)
3789 {
3790 switch (reloc->howto->type)
3791 {
3792 case R_JMP2:
3793 /* Speciial relaxed type */
3794 {
3795 bfd_vma dot = seclet->offset + dst_address + seclet->u.indirect.section->output_section->vma;
3796 int gap = get_value(reloc,seclet)-dot-1;
3797 if ((gap & ~0xff ) != 0 &&((gap & 0xff00)!= 0xff00)) abort();
3798
3799 bfd_put_8(in_abfd,gap, data+dst_address);
3800
3801 switch (data[dst_address-1])
3802 {
3803
3804 case 0x5e:
3805 /* jsr -> bsr */
3806 bfd_put_8(in_abfd, 0x55, data+dst_address-1);
3807 break;
3808 case 0x5a:
3809 /* jmp ->bra */
3810 bfd_put_8(in_abfd, 0x40, data+dst_address-1);
3811 break;
3812
3813 default:
3814 abort();
3815
3816 }
3817
3818
3819
3820
3821 dst_address++;
3822 src_address+=3;
3823
3824 break;
3825 }
3826
3827
3828 case R_MOVB2:
3829 /* Special relaxed type, there will be a gap between where we
3830 get stuff from and where we put stuff to now
3831
3832 for a mov.b @aa:16 -> mov.b @aa:8
3833 opcode 0x6a 0x0y offset
3834 -> 0x2y off
3835 */
3836 if (data[dst_address-1] != 0x6a)
3837 abort();
3838 switch (data[dst_address] & 0xf0)
3839 {
3840 case 0x00:
3841 /* Src is memory */
3842 data[dst_address-1] = (data[src_address] & 0xf) | 0x20;
3843 break;
3844 case 0x80:
3845 /* Src is reg */
3846 data[dst_address-1] = (data[src_address] & 0xf) | 0x30;
3847 break;
3848 default:
3849 abort();
3850 }
3851
3852 /* the offset must fit ! after all, what was all the relaxing
3853 about ? */
3854
3855 bfd_put_8(in_abfd, get_value(reloc, seclet), data + dst_address);
3856
3857 /* Note the magic - src goes up by two bytes, but dst by only
3858 one */
3859 dst_address+=1;
3860 src_address+=3;
3861
3862 break;
3863 /* PCrel 8 bits */
3864 case R_PCRBYTE:
3865 {
3866 bfd_vma dot = seclet->offset + dst_address + seclet->u.indirect.section->output_section->vma;
3867 int gap = get_value(reloc,seclet)-dot;
3868 if (gap > 127 || gap < -128)
3869 {
3870 bfd_error_vector.reloc_value_truncated(reloc, seclet);
3871 }
3872
3873 bfd_put_8(in_abfd,gap, data+dst_address);
3874 dst_address++;
3875 src_address++;
3876
3877 break;
3878 }
3879
3880 case R_RELBYTE:
3881 {
3882 unsigned int gap =get_value(reloc,seclet);
3883 if (gap > 256)
3884 {
3885 bfd_error_vector.reloc_value_truncated(reloc, seclet);
3886 }
3887
3888 bfd_put_8(in_abfd, gap, data+dst_address);
3889 dst_address+=1;
3890 src_address+=1;
3891
3892
3893 }
3894 break;
3895 case R_JMP1:
3896 /* A relword which would have like to have been a pcrel */
3897 case R_MOVB1:
3898 /* A relword which would like to have been modified but
3899 didn't make it */
3900 case R_RELWORD:
3901 bfd_put_16(in_abfd, get_value(reloc,seclet), data+dst_address);
3902 dst_address+=2;
3903 src_address+=2;
3904 break;
3905
3906 default:
3907 abort();
3908 }
3909 }
3910 }
3911 }
3912 free((char *)reloc_vector);
3913 return data;
3914
3915 }
3916
3917
3918 #define coff_core_file_failing_command _bfd_dummy_core_file_failing_command
3919 #define coff_core_file_failing_signal _bfd_dummy_core_file_failing_signal
3920 #define coff_core_file_matches_executable_p _bfd_dummy_core_file_matches_executable_p
3921 #define coff_slurp_armap bfd_slurp_coff_armap
3922 #define coff_slurp_extended_name_table _bfd_slurp_extended_name_table
3923 #define coff_truncate_arname bfd_dont_truncate_arname
3924 #define coff_openr_next_archived_file bfd_generic_openr_next_archived_file
3925 #define coff_generic_stat_arch_elt bfd_generic_stat_arch_elt
3926 #define coff_get_section_contents bfd_generic_get_section_contents
3927 #define coff_close_and_cleanup bfd_generic_close_and_cleanup
3928
3929 #define coff_bfd_debug_info_start bfd_void
3930 #define coff_bfd_debug_info_end bfd_void
3931 #define coff_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
3932 #define coff_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
3933 #define coff_bfd_relax_section bfd_generic_relax_section
3934
This page took 0.116379 seconds and 4 git commands to generate.