Lint; remove bcopy/bzero.
[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 {
384 sec_flags = SEC_LOAD | SEC_ALLOC;
385 }
386 else if (styp_flags & STYP_BSS)
387 {
388 sec_flags = SEC_ALLOC;
389 }
390 else if (styp_flags & STYP_INFO)
391 {
392 sec_flags = SEC_NEVER_LOAD;
393 }
394 else
395 {
396 sec_flags = SEC_ALLOC | SEC_LOAD;
397 }
398 #ifdef STYP_LIT /* A29k readonly text/data section type */
399 if ((styp_flags & STYP_LIT) == STYP_LIT)
400 {
401 sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
402 }
403 #endif /* STYP_LIT */
404 #ifdef STYP_OTHER_LOAD /* Other loaded sections */
405 if (styp_flags & STYP_OTHER_LOAD)
406 {
407 sec_flags = (SEC_LOAD | SEC_ALLOC);
408 }
409 #endif /* STYP_SDATA */
410
411 return(sec_flags);
412 }
413
414 #define get_index(symbol) ((int) (symbol)->udata)
415 #define set_index(symbol, idx) ((symbol)->udata =(PTR) (idx))
416
417 /* **********************************************************************
418 Here are all the routines for swapping the structures seen in the
419 outside world into the internal forms.
420 */
421
422
423 static void
424 DEFUN(bfd_swap_reloc_in,(abfd, reloc_src, reloc_dst),
425 bfd *abfd AND
426 RELOC *reloc_src AND
427 struct internal_reloc *reloc_dst)
428 {
429 reloc_dst->r_vaddr = bfd_h_get_32(abfd, (bfd_byte *)reloc_src->r_vaddr);
430 reloc_dst->r_symndx = bfd_h_get_32(abfd, (bfd_byte *) reloc_src->r_symndx);
431
432 #ifdef RS6000COFF_C
433 reloc_dst->r_type = bfd_h_get_8(abfd, reloc_src->r_type);
434 reloc_dst->r_size = bfd_h_get_8(abfd, reloc_src->r_size);
435 #else
436 reloc_dst->r_type = bfd_h_get_16(abfd, (bfd_byte *) reloc_src->r_type);
437 #endif
438
439 #ifdef SWAP_IN_RELOC_OFFSET
440 reloc_dst->r_offset = SWAP_IN_RELOC_OFFSET(abfd,
441 (bfd_byte *) reloc_src->r_offset);
442 #endif
443 }
444
445
446 static unsigned int
447 DEFUN(coff_swap_reloc_out,(abfd, src, dst),
448 bfd *abfd AND
449 PTR src AND
450 PTR dst)
451 {
452 struct internal_reloc *reloc_src = (struct internal_reloc *)src;
453 struct external_reloc *reloc_dst = (struct external_reloc *)dst;
454 bfd_h_put_32(abfd, reloc_src->r_vaddr, (bfd_byte *) reloc_dst->r_vaddr);
455 bfd_h_put_32(abfd, reloc_src->r_symndx, (bfd_byte *) reloc_dst->r_symndx);
456 bfd_h_put_16(abfd, reloc_src->r_type, (bfd_byte *)
457 reloc_dst->r_type);
458
459 #ifdef SWAP_OUT_RELOC_OFFSET
460 SWAP_OUT_RELOC_OFFSET(abfd,
461 reloc_src->r_offset,
462 (bfd_byte *) reloc_dst->r_offset);
463 #endif
464 #ifdef SWAP_OUT_RELOC_EXTRA
465 SWAP_OUT_RELOC_EXTRA(abfd,reloc_src, reloc_dst);
466 #endif
467
468 return sizeof(struct external_reloc);
469 }
470
471 static void
472 DEFUN(bfd_swap_filehdr_in,(abfd, filehdr_src, filehdr_dst),
473 bfd *abfd AND
474 FILHDR *filehdr_src AND
475 struct internal_filehdr *filehdr_dst)
476 {
477 filehdr_dst->f_magic = bfd_h_get_16(abfd, (bfd_byte *) filehdr_src->f_magic);
478 filehdr_dst->f_nscns = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_nscns);
479 filehdr_dst->f_timdat = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_timdat);
480 filehdr_dst->f_symptr = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_symptr);
481 filehdr_dst->f_nsyms = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_nsyms);
482 filehdr_dst->f_opthdr = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_opthdr);
483 filehdr_dst->f_flags = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_flags);
484 }
485
486 static unsigned int
487 DEFUN(coff_swap_filehdr_out,(abfd, in, out),
488 bfd *abfd AND
489 PTR in AND
490 PTR out)
491 {
492 struct internal_filehdr *filehdr_in = (struct internal_filehdr *)in;
493 FILHDR *filehdr_out = (FILHDR *)out;
494 bfd_h_put_16(abfd, filehdr_in->f_magic, (bfd_byte *) filehdr_out->f_magic);
495 bfd_h_put_16(abfd, filehdr_in->f_nscns, (bfd_byte *) filehdr_out->f_nscns);
496 bfd_h_put_32(abfd, filehdr_in->f_timdat, (bfd_byte *) filehdr_out->f_timdat);
497 bfd_h_put_32(abfd, filehdr_in->f_symptr, (bfd_byte *) filehdr_out->f_symptr);
498 bfd_h_put_32(abfd, filehdr_in->f_nsyms, (bfd_byte *) filehdr_out->f_nsyms);
499 bfd_h_put_16(abfd, filehdr_in->f_opthdr, (bfd_byte *) filehdr_out->f_opthdr);
500 bfd_h_put_16(abfd, filehdr_in->f_flags, (bfd_byte *) filehdr_out->f_flags);
501 return sizeof(FILHDR);
502 }
503
504
505 #ifndef NO_COFF_SYMBOLS
506
507 static void
508 DEFUN(coff_swap_sym_in,(abfd, ext1, in1),
509 bfd *abfd AND
510 PTR ext1 AND
511 PTR in1)
512 {
513 SYMENT *ext = (SYMENT *)ext1;
514 struct internal_syment *in = (struct internal_syment *)in1;
515
516 if( ext->e.e_name[0] == 0) {
517 in->_n._n_n._n_zeroes = 0;
518 in->_n._n_n._n_offset = bfd_h_get_32(abfd, (bfd_byte *) ext->e.e.e_offset);
519 }
520 else {
521 #if SYMNMLEN != E_SYMNMLEN
522 -> Error, we need to cope with truncating or extending SYMNMLEN!;
523 #else
524 memcpy(in->_n._n_name, ext->e.e_name, SYMNMLEN);
525 #endif
526 }
527 in->n_value = bfd_h_get_32(abfd, (bfd_byte *) ext->e_value);
528 in->n_scnum = bfd_h_get_16(abfd, (bfd_byte *) ext->e_scnum);
529 if (sizeof(ext->e_type) == 2){
530 in->n_type = bfd_h_get_16(abfd, (bfd_byte *) ext->e_type);
531 }
532 else {
533 in->n_type = bfd_h_get_32(abfd, (bfd_byte *) ext->e_type);
534 }
535 in->n_sclass = bfd_h_get_8(abfd, ext->e_sclass);
536 in->n_numaux = bfd_h_get_8(abfd, ext->e_numaux);
537 }
538
539 static unsigned int
540 DEFUN(coff_swap_sym_out,(abfd, inp, extp),
541 bfd *abfd AND
542 PTR inp AND
543 PTR extp)
544 {
545 struct internal_syment *in = (struct internal_syment *)inp;
546 SYMENT *ext =(SYMENT *)extp;
547 if(in->_n._n_name[0] == 0) {
548 bfd_h_put_32(abfd, 0, (bfd_byte *) ext->e.e.e_zeroes);
549 bfd_h_put_32(abfd, in->_n._n_n._n_offset, (bfd_byte *) ext->e.e.e_offset);
550 }
551 else {
552 #if SYMNMLEN != E_SYMNMLEN
553 -> Error, we need to cope with truncating or extending SYMNMLEN!;
554 #else
555 memcpy(ext->e.e_name, in->_n._n_name, SYMNMLEN);
556 #endif
557 }
558 bfd_h_put_32(abfd, in->n_value , (bfd_byte *) ext->e_value);
559 bfd_h_put_16(abfd, in->n_scnum , (bfd_byte *) ext->e_scnum);
560 if (sizeof(ext->e_type) == 2)
561 {
562 bfd_h_put_16(abfd, in->n_type , (bfd_byte *) ext->e_type);
563 }
564 else
565 {
566 bfd_h_put_32(abfd, in->n_type , (bfd_byte *) ext->e_type);
567 }
568 bfd_h_put_8(abfd, in->n_sclass , ext->e_sclass);
569 bfd_h_put_8(abfd, in->n_numaux , ext->e_numaux);
570 return sizeof(SYMENT);
571 }
572
573 static void
574 DEFUN(coff_swap_aux_in,(abfd, ext1, type, class, in1),
575 bfd *abfd AND
576 PTR ext1 AND
577 int type AND
578 int class AND
579 PTR in1)
580 {
581 AUXENT *ext = (AUXENT *)ext1;
582 union internal_auxent *in = (union internal_auxent *)in1;
583
584 switch (class) {
585 case C_FILE:
586 if (ext->x_file.x_fname[0] == 0) {
587 in->x_file.x_n.x_zeroes = 0;
588 in->x_file.x_n.x_offset =
589 bfd_h_get_32(abfd, (bfd_byte *) ext->x_file.x_n.x_offset);
590 } else {
591 #if FILNMLEN != E_FILNMLEN
592 -> Error, we need to cope with truncating or extending FILNMLEN!;
593 #else
594 memcpy (in->x_file.x_fname, ext->x_file.x_fname, FILNMLEN);
595 #endif
596 }
597 break;
598
599 /* RS/6000 "csect" auxents */
600 #ifdef RS6000COFF_C
601 case C_EXT:
602 case C_HIDEXT:
603 in->x_csect.x_scnlen = bfd_h_get_32 (abfd, (bfd_byte *) ext->x_csect.x_scnlen);
604 in->x_csect.x_parmhash = bfd_h_get_32 (abfd, (bfd_byte *) ext->x_csect.x_parmhash);
605 in->x_csect.x_snhash = bfd_h_get_16 (abfd, (bfd_byte *) ext->x_csect.x_snhash);
606 /* We don't have to hack bitfields in x_smtyp because it's defined by
607 shifts-and-ands, which are equivalent on all byte orders. */
608 in->x_csect.x_smtyp = bfd_h_get_8 (abfd, (bfd_byte *) ext->x_csect.x_smtyp);
609 in->x_csect.x_smclas = bfd_h_get_8 (abfd, (bfd_byte *) ext->x_csect.x_smclas);
610 in->x_csect.x_stab = bfd_h_get_32 (abfd, (bfd_byte *) ext->x_csect.x_stab);
611 in->x_csect.x_snstab = bfd_h_get_16 (abfd, (bfd_byte *) ext->x_csect.x_snstab);
612 break;
613 #endif
614
615 case C_STAT:
616 #ifdef C_LEAFSTAT
617 case C_LEAFSTAT:
618 #endif
619 case C_HIDDEN:
620 if (type == T_NULL) {
621 in->x_scn.x_scnlen = GET_SCN_SCNLEN(abfd, ext);
622 in->x_scn.x_nreloc = GET_SCN_NRELOC(abfd, ext);
623 in->x_scn.x_nlinno = GET_SCN_NLINNO(abfd, ext);
624 break;
625 }
626 default:
627 in->x_sym.x_tagndx.l = bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_tagndx);
628 #ifndef NO_TVNDX
629 in->x_sym.x_tvndx = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_tvndx);
630 #endif
631
632 if (ISARY(type) || class == C_BLOCK) {
633 #if DIMNUM != E_DIMNUM
634 -> Error, we need to cope with truncating or extending DIMNUM!;
635 #else
636 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]);
637 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]);
638 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]);
639 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]);
640 #endif
641 }
642 in->x_sym.x_fcnary.x_fcn.x_lnnoptr = GET_FCN_LNNOPTR(abfd, ext);
643 in->x_sym.x_fcnary.x_fcn.x_endndx.l = GET_FCN_ENDNDX(abfd, ext);
644
645 if (ISFCN(type)) {
646 in->x_sym.x_misc.x_fsize = bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_misc.x_fsize);
647 }
648 else {
649 in->x_sym.x_misc.x_lnsz.x_lnno = GET_LNSZ_LNNO(abfd, ext);
650 in->x_sym.x_misc.x_lnsz.x_size = GET_LNSZ_SIZE(abfd, ext);
651 }
652 }
653 }
654
655 static unsigned int
656 DEFUN(coff_swap_aux_out,(abfd, inp, type, class, extp),
657 bfd *abfd AND
658 PTR inp AND
659 int type AND
660 int class AND
661 PTR extp)
662 {
663 union internal_auxent *in = (union internal_auxent *)inp;
664 AUXENT *ext = (AUXENT *)extp;
665 switch (class) {
666 case C_FILE:
667 if (in->x_file.x_fname[0] == 0) {
668 PUTWORD(abfd, 0, (bfd_byte *) ext->x_file.x_n.x_zeroes);
669 PUTWORD(abfd,
670 in->x_file.x_n.x_offset,
671 (bfd_byte *) ext->x_file.x_n.x_offset);
672 }
673 else {
674 #if FILNMLEN != E_FILNMLEN
675 -> Error, we need to cope with truncating or extending FILNMLEN!;
676 #else
677 memcpy (ext->x_file.x_fname, in->x_file.x_fname, FILNMLEN);
678 #endif
679 }
680 break;
681
682 #ifdef RS6000COFF_C
683 /* RS/6000 "csect" auxents */
684 case C_EXT:
685 case C_HIDEXT:
686 PUTWORD (abfd, in->x_csect.x_scnlen, ext->x_csect.x_scnlen);
687 PUTWORD (abfd, in->x_csect.x_parmhash, ext->x_csect.x_parmhash);
688 PUTHALF (abfd, in->x_csect.x_snhash, ext->x_csect.x_snhash);
689 /* We don't have to hack bitfields in x_smtyp because it's defined by
690 shifts-and-ands, which are equivalent on all byte orders. */
691 PUTBYTE (abfd, in->x_csect.x_smtyp, ext->x_csect.x_smtyp);
692 PUTBYTE (abfd, in->x_csect.x_smclas, ext->x_csect.x_smclas);
693 PUTWORD (abfd, in->x_csect.x_stab, ext->x_csect.x_stab);
694 PUTHALF (abfd, in->x_csect.x_snstab, ext->x_csect.x_snstab);
695 break;
696 #endif
697
698 case C_STAT:
699 #ifdef C_LEAFSTAT
700 case C_LEAFSTAT:
701 #endif
702 case C_HIDDEN:
703 if (type == T_NULL) {
704 PUT_SCN_SCNLEN(abfd, in->x_scn.x_scnlen, ext);
705 PUT_SCN_NRELOC(abfd, in->x_scn.x_nreloc, ext);
706 PUT_SCN_NLINNO(abfd, in->x_scn.x_nlinno, ext);
707 break;
708 }
709 default:
710 PUTWORD(abfd, in->x_sym.x_tagndx.l, (bfd_byte *) ext->x_sym.x_tagndx);
711 #ifndef NO_TVNDX
712 bfd_h_put_16(abfd, in->x_sym.x_tvndx , (bfd_byte *) ext->x_sym.x_tvndx);
713 #endif
714
715 if (ISFCN(type)) {
716 PUTWORD(abfd, in->x_sym.x_misc.x_fsize, (bfd_byte *) ext->x_sym.x_misc.x_fsize);
717 PUT_FCN_LNNOPTR(abfd, in->x_sym.x_fcnary.x_fcn.x_lnnoptr, ext);
718 PUT_FCN_ENDNDX(abfd, in->x_sym.x_fcnary.x_fcn.x_endndx.l, ext);
719 }
720 else {
721
722 if (ISARY(type) || class == C_BLOCK) {
723 #if DIMNUM != E_DIMNUM
724 -> Error, we need to cope with truncating or extending DIMNUM!;
725 #else
726 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]);
727 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]);
728 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]);
729 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]);
730 #endif
731 }
732 PUT_LNSZ_LNNO(abfd, in->x_sym.x_misc.x_lnsz.x_lnno, ext);
733 PUT_LNSZ_SIZE(abfd, in->x_sym.x_misc.x_lnsz.x_size, ext);
734
735 PUT_FCN_LNNOPTR(abfd, in->x_sym.x_fcnary.x_fcn.x_lnnoptr, ext);
736 PUT_FCN_ENDNDX(abfd, in->x_sym.x_fcnary.x_fcn.x_endndx.l, ext);
737
738
739 }
740 }
741 return sizeof(AUXENT);
742 }
743
744 #endif /* NO_COFF_SYMBOLS */
745
746 #ifndef NO_COFF_LINENOS
747
748 static void
749 DEFUN(coff_swap_lineno_in,(abfd, ext1, in1),
750 bfd *abfd AND
751 PTR ext1 AND
752 PTR in1)
753 {
754 LINENO *ext = (LINENO *)ext1;
755 struct internal_lineno *in = (struct internal_lineno *)in1;
756
757 in->l_addr.l_symndx = bfd_h_get_32(abfd, (bfd_byte *) ext->l_addr.l_symndx);
758 in->l_lnno = GET_LINENO_LNNO(abfd, ext);
759 }
760
761 static unsigned int
762 DEFUN(coff_swap_lineno_out,(abfd, inp, outp),
763 bfd *abfd AND
764 PTR inp AND
765 PTR outp)
766 {
767 struct internal_lineno *in = (struct internal_lineno *)inp;
768 struct external_lineno *ext = (struct external_lineno *)outp;
769 PUTWORD(abfd, in->l_addr.l_symndx, (bfd_byte *)
770 ext->l_addr.l_symndx);
771
772 PUT_LINENO_LNNO (abfd, in->l_lnno, ext);
773 return sizeof(struct external_lineno);
774 }
775
776 #endif /* NO_COFF_LINENOS */
777
778
779 static void
780 DEFUN(bfd_swap_aouthdr_in,(abfd, aouthdr_ext1, aouthdr_int1),
781 bfd *abfd AND
782 PTR aouthdr_ext1 AND
783 PTR aouthdr_int1)
784 {
785 AOUTHDR *aouthdr_ext = (AOUTHDR *) aouthdr_ext1;
786 struct internal_aouthdr *aouthdr_int = (struct internal_aouthdr *)aouthdr_int1;
787
788 aouthdr_int->magic = bfd_h_get_16(abfd, (bfd_byte *) aouthdr_ext->magic);
789 aouthdr_int->vstamp = bfd_h_get_16(abfd, (bfd_byte *) aouthdr_ext->vstamp);
790 aouthdr_int->tsize = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->tsize);
791 aouthdr_int->dsize = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->dsize);
792 aouthdr_int->bsize = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->bsize);
793 aouthdr_int->entry = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->entry);
794 aouthdr_int->text_start = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->text_start);
795 aouthdr_int->data_start = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->data_start);
796 #ifdef I960
797 aouthdr_int->tagentries = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->tagentries);
798 #endif
799
800 #ifdef RS6000COFF_C
801 aouthdr_int->o_toc = bfd_h_get_32(abfd, aouthdr_ext->o_toc);
802 aouthdr_int->o_snentry = bfd_h_get_16(abfd, aouthdr_ext->o_snentry);
803 aouthdr_int->o_sntext = bfd_h_get_16(abfd, aouthdr_ext->o_sntext);
804 aouthdr_int->o_sndata = bfd_h_get_16(abfd, aouthdr_ext->o_sndata);
805 aouthdr_int->o_sntoc = bfd_h_get_16(abfd, aouthdr_ext->o_sntoc);
806 aouthdr_int->o_snloader = bfd_h_get_16(abfd, aouthdr_ext->o_snloader);
807 aouthdr_int->o_snbss = bfd_h_get_16(abfd, aouthdr_ext->o_snbss);
808 aouthdr_int->o_algntext = bfd_h_get_16(abfd, aouthdr_ext->o_algntext);
809 aouthdr_int->o_algndata = bfd_h_get_16(abfd, aouthdr_ext->o_algndata);
810 aouthdr_int->o_modtype = bfd_h_get_16(abfd, aouthdr_ext->o_modtype);
811 aouthdr_int->o_maxstack = bfd_h_get_32(abfd, aouthdr_ext->o_maxstack);
812 #endif
813 }
814
815 static unsigned int
816 DEFUN(coff_swap_aouthdr_out,(abfd, in, out),
817 bfd *abfd AND
818 PTR in AND
819 PTR out)
820 {
821 struct internal_aouthdr *aouthdr_in = (struct internal_aouthdr *)in;
822 AOUTHDR *aouthdr_out = (AOUTHDR *)out;
823 bfd_h_put_16(abfd, aouthdr_in->magic, (bfd_byte *) aouthdr_out->magic);
824 bfd_h_put_16(abfd, aouthdr_in->vstamp, (bfd_byte *) aouthdr_out->vstamp);
825 bfd_h_put_32(abfd, aouthdr_in->tsize, (bfd_byte *) aouthdr_out->tsize);
826 bfd_h_put_32(abfd, aouthdr_in->dsize, (bfd_byte *) aouthdr_out->dsize);
827 bfd_h_put_32(abfd, aouthdr_in->bsize, (bfd_byte *) aouthdr_out->bsize);
828 bfd_h_put_32(abfd, aouthdr_in->entry, (bfd_byte *) aouthdr_out->entry);
829 bfd_h_put_32(abfd, aouthdr_in->text_start,
830 (bfd_byte *) aouthdr_out->text_start);
831 bfd_h_put_32(abfd, aouthdr_in->data_start, (bfd_byte *) aouthdr_out->data_start);
832 #ifdef I960
833 bfd_h_put_32(abfd, aouthdr_in->tagentries, (bfd_byte *) aouthdr_out->tagentries);
834 #endif
835 return sizeof(AOUTHDR);
836 }
837
838 static void
839 DEFUN(coff_swap_scnhdr_in,(abfd, scnhdr_ext, scnhdr_int),
840 bfd *abfd AND
841 SCNHDR *scnhdr_ext AND
842 struct internal_scnhdr *scnhdr_int)
843 {
844 memcpy(scnhdr_int->s_name, scnhdr_ext->s_name, sizeof(scnhdr_int->s_name));
845 scnhdr_int->s_vaddr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_vaddr);
846 scnhdr_int->s_paddr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_paddr);
847 scnhdr_int->s_size = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_size);
848
849 scnhdr_int->s_scnptr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_scnptr);
850 scnhdr_int->s_relptr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_relptr);
851 scnhdr_int->s_lnnoptr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_lnnoptr);
852 scnhdr_int->s_flags = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_flags);
853 #if defined(M88)
854 scnhdr_int->s_nreloc = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_nreloc);
855 scnhdr_int->s_nlnno = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_nlnno);
856 #else
857 scnhdr_int->s_nreloc = bfd_h_get_16(abfd, (bfd_byte *) scnhdr_ext->s_nreloc);
858 scnhdr_int->s_nlnno = bfd_h_get_16(abfd, (bfd_byte *) scnhdr_ext->s_nlnno);
859 #endif
860 #ifdef I960
861 scnhdr_int->s_align = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_align);
862 #endif
863 }
864
865 static unsigned int
866 DEFUN(coff_swap_scnhdr_out,(abfd, in, out),
867 bfd *abfd AND
868 PTR in AND
869 PTR out)
870 {
871 struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *)in;
872 SCNHDR *scnhdr_ext = (SCNHDR *)out;
873 memcpy(scnhdr_ext->s_name, scnhdr_int->s_name, sizeof(scnhdr_int->s_name));
874 PUTWORD(abfd, scnhdr_int->s_vaddr, (bfd_byte *) scnhdr_ext->s_vaddr);
875 PUTWORD(abfd, scnhdr_int->s_paddr, (bfd_byte *) scnhdr_ext->s_paddr);
876 PUTWORD(abfd, scnhdr_int->s_size, (bfd_byte *) scnhdr_ext->s_size);
877 PUTWORD(abfd, scnhdr_int->s_scnptr, (bfd_byte *) scnhdr_ext->s_scnptr);
878 PUTWORD(abfd, scnhdr_int->s_relptr, (bfd_byte *) scnhdr_ext->s_relptr);
879 PUTWORD(abfd, scnhdr_int->s_lnnoptr, (bfd_byte *) scnhdr_ext->s_lnnoptr);
880 PUTWORD(abfd, scnhdr_int->s_flags, (bfd_byte *) scnhdr_ext->s_flags);
881 #if defined(M88)
882 PUTWORD(abfd, scnhdr_int->s_nlnno, (bfd_byte *) scnhdr_ext->s_nlnno);
883 PUTWORD(abfd, scnhdr_int->s_nreloc, (bfd_byte *) scnhdr_ext->s_nreloc);
884 #else
885 PUTHALF(abfd, scnhdr_int->s_nlnno, (bfd_byte *) scnhdr_ext->s_nlnno);
886 PUTHALF(abfd, scnhdr_int->s_nreloc, (bfd_byte *) scnhdr_ext->s_nreloc);
887 #endif
888
889 #if defined(I960)
890 PUTWORD(abfd, scnhdr_int->s_align, (bfd_byte *) scnhdr_ext->s_align);
891 #endif
892 return sizeof(SCNHDR);
893 }
894
895
896 /*
897 initialize a section structure with information peculiar to this
898 particular implementation of coff
899 */
900
901 static boolean
902 DEFUN(coff_new_section_hook,(abfd, section),
903 bfd *abfd AND
904 asection *section)
905 {
906 section->alignment_power = abfd->xvec->align_power_min;
907 /* Allocate aux records for section symbols, to store size and
908 related info.
909
910 @@ Shouldn't use constant multiplier here! */
911 coffsymbol (section->symbol)->native =
912 (combined_entry_type *) bfd_zalloc (abfd,
913 sizeof (combined_entry_type) * 10);
914 return true;
915 }
916
917 static asection bfd_debug_section = { "*DEBUG*" };
918
919 /* Take a section header read from a coff file (in HOST byte order),
920 and make a BFD "section" out of it. */
921 static boolean
922 DEFUN(make_a_section_from_file,(abfd, hdr, target_index),
923 bfd *abfd AND
924 struct internal_scnhdr *hdr AND
925 unsigned int target_index)
926 {
927 asection *return_section;
928 char *name;
929
930 /* Assorted wastage to null-terminate the name, thanks AT&T! */
931 name = bfd_alloc(abfd, sizeof (hdr->s_name)+1);
932 if (name == NULL) {
933 bfd_error = no_memory;
934 return false;
935 }
936 strncpy(name, (char *) &hdr->s_name[0], sizeof (hdr->s_name));
937 name[sizeof (hdr->s_name)] = 0;
938
939 return_section = bfd_make_section(abfd, name);
940 if (return_section == NULL)
941 return false;
942
943 /* s_paddr is presumed to be = to s_vaddr */
944
945 return_section->vma = hdr->s_vaddr;
946 return_section->_raw_size = hdr->s_size;
947 return_section->filepos = hdr->s_scnptr;
948 return_section->rel_filepos = hdr->s_relptr;
949 return_section->reloc_count = hdr->s_nreloc;
950 #ifdef I960
951
952 /* FIXME, use a temp var rather than alignment_power */
953 return_section->alignment_power = hdr->s_align;
954 {
955 unsigned int i;
956 for (i = 0; i < 32; i++) {
957 if ((1 << i) >= (int) (return_section->alignment_power)) {
958 return_section->alignment_power = i;
959 break;
960 }
961 }
962 }
963
964 #endif
965 return_section->line_filepos = hdr->s_lnnoptr;
966 /*
967 return_section->linesize = hdr->s_nlnno * sizeof (struct lineno);
968 */
969
970 return_section->lineno_count = hdr->s_nlnno;
971 return_section->userdata = NULL;
972 return_section->next = (asection *) NULL;
973 return_section->flags = styp_to_sec_flags(hdr->s_flags);
974
975 return_section->target_index = target_index;
976
977 if (hdr->s_nreloc != 0)
978 return_section->flags |= SEC_RELOC;
979 /* FIXME: should this check 'hdr->s_size > 0' */
980 if (hdr->s_scnptr != 0)
981 return_section->flags |= SEC_HAS_CONTENTS;
982 return true;
983 }
984 static boolean
985 DEFUN(coff_mkobject,(abfd),
986 bfd *abfd)
987 {
988 abfd->tdata.coff_obj_data = (struct coff_tdata *)bfd_zalloc (abfd,sizeof(coff_data_type));
989 if (abfd->tdata.coff_obj_data == 0){
990 bfd_error = no_memory;
991 return false;
992 }
993 coff_data(abfd)->relocbase = 0;
994 /* make_abs_section(abfd);*/
995 return true;
996 }
997
998 static
999 bfd_target *
1000 DEFUN(coff_real_object_p,(abfd, nscns, internal_f, internal_a),
1001 bfd *abfd AND
1002 unsigned nscns AND
1003 struct internal_filehdr *internal_f AND
1004 struct internal_aouthdr *internal_a)
1005 {
1006 coff_data_type *coff;
1007 enum bfd_architecture arch;
1008 long machine;
1009 size_t readsize; /* length of file_info */
1010 SCNHDR *external_sections;
1011
1012 /* Build a play area */
1013 if (coff_mkobject(abfd) != true)
1014 return 0;
1015
1016 coff = coff_data(abfd);
1017
1018
1019 external_sections = (SCNHDR *)bfd_alloc(abfd, readsize = (nscns * SCNHSZ));
1020
1021 if (bfd_read((PTR)external_sections, 1, readsize, abfd) != readsize) {
1022 goto fail;
1023 }
1024
1025
1026 /* Now copy data as required; construct all asections etc */
1027 coff->symbol_index_slew = 0;
1028 coff->relocbase =0;
1029 coff->raw_syment_count = 0;
1030 coff->raw_linenos = 0;
1031 coff->raw_syments = 0;
1032 coff->sym_filepos =0;
1033 coff->flags = internal_f->f_flags;
1034 if (nscns != 0) {
1035 unsigned int i;
1036 for (i = 0; i < nscns; i++) {
1037 struct internal_scnhdr tmp;
1038 coff_swap_scnhdr_in(abfd, external_sections + i, &tmp);
1039 make_a_section_from_file(abfd,&tmp, i+1);
1040 }
1041 }
1042
1043 /* make_abs_section(abfd);*/
1044
1045 /* Determine the machine architecture and type. */
1046 machine = 0;
1047 switch (internal_f->f_magic) {
1048 #ifdef I386MAGIC
1049 case I386MAGIC:
1050 arch = bfd_arch_i386;
1051 machine = 0;
1052 break;
1053 #endif
1054
1055 #ifdef A29K_MAGIC_BIG
1056 case A29K_MAGIC_BIG:
1057 case A29K_MAGIC_LITTLE:
1058 arch = bfd_arch_a29k;
1059 machine = 0;
1060 break;
1061 #endif
1062
1063 #ifdef MIPS
1064 case MIPS_MAGIC_1:
1065 case MIPS_MAGIC_2:
1066 case MIPS_MAGIC_3:
1067 arch = bfd_arch_mips;
1068 machine = 0;
1069 break;
1070 #endif
1071
1072 #ifdef MC68MAGIC
1073 case MC68MAGIC:
1074 case M68MAGIC:
1075 arch = bfd_arch_m68k;
1076 machine = 68020;
1077 break;
1078 #endif
1079 #ifdef MC88MAGIC
1080 case MC88MAGIC:
1081 case MC88DMAGIC:
1082 case MC88OMAGIC:
1083 arch = bfd_arch_m88k;
1084 machine = 88100;
1085 break;
1086 #endif
1087 #ifdef Z8KMAGIC
1088 case Z8KMAGIC:
1089 arch = bfd_arch_z8k;
1090 switch (internal_f->f_flags & F_MACHMASK)
1091 {
1092 case F_Z8001:
1093 machine = bfd_mach_z8001;
1094 break;
1095 case F_Z8002:
1096 machine = bfd_mach_z8002;
1097 break;
1098 default:
1099 goto fail;
1100 }
1101 break;
1102 #endif
1103 #ifdef I960
1104 #ifdef I960ROMAGIC
1105 case I960ROMAGIC:
1106 case I960RWMAGIC:
1107 arch = bfd_arch_i960;
1108 switch (F_I960TYPE & internal_f->f_flags)
1109 {
1110 default:
1111 case F_I960CORE:
1112 machine = bfd_mach_i960_core;
1113 break;
1114 case F_I960KB:
1115 machine = bfd_mach_i960_kb_sb;
1116 break;
1117 case F_I960MC:
1118 machine = bfd_mach_i960_mc;
1119 break;
1120 case F_I960XA:
1121 machine = bfd_mach_i960_xa;
1122 break;
1123 case F_I960CA:
1124 machine = bfd_mach_i960_ca;
1125 break;
1126 case F_I960KA:
1127 machine = bfd_mach_i960_ka_sa;
1128 break;
1129 }
1130 break;
1131 #endif
1132 #endif
1133
1134 #ifdef U802ROMAGIC
1135 case U802ROMAGIC:
1136 case U802WRMAGIC:
1137 case U802TOCMAGIC:
1138 arch = bfd_arch_rs6000;
1139 machine = 6000;
1140 break;
1141 #endif
1142
1143 #ifdef WE32KMAGIC
1144 case WE32KMAGIC:
1145 arch = bfd_arch_we32k;
1146 machine = 0;
1147 break;
1148 #endif
1149
1150 #ifdef H8300MAGIC
1151 case H8300MAGIC:
1152 arch = bfd_arch_h8300;
1153 machine = 0;
1154 break;
1155 #endif
1156
1157 default: /* Unreadable input file type */
1158 arch = bfd_arch_obscure;
1159 break;
1160 }
1161
1162 bfd_default_set_arch_mach(abfd, arch, machine);
1163 if (!(internal_f->f_flags & F_RELFLG))
1164 abfd->flags |= HAS_RELOC;
1165 if ((internal_f->f_flags & F_EXEC))
1166 abfd->flags |= EXEC_P;
1167 if (!(internal_f->f_flags & F_LNNO))
1168 abfd->flags |= HAS_LINENO;
1169 if (!(internal_f->f_flags & F_LSYMS))
1170 abfd->flags |= HAS_LOCALS;
1171
1172
1173 bfd_get_symcount(abfd) = internal_f->f_nsyms;
1174 if (internal_f->f_nsyms)
1175 abfd->flags |= HAS_SYMS;
1176
1177 coff->sym_filepos = internal_f->f_symptr;
1178
1179 /* These members communicate important constants about the symbol table
1180 to GDB's symbol-reading code. These `constants' unfortunately vary
1181 from coff implementation to implementation... */
1182 #ifndef NO_COFF_SYMBOLS
1183 coff->local_n_btmask = N_BTMASK;
1184 coff->local_n_btshft = N_BTSHFT;
1185 coff->local_n_tmask = N_TMASK;
1186 coff->local_n_tshift = N_TSHIFT;
1187 coff->local_symesz = SYMESZ;
1188 coff->local_auxesz = AUXESZ;
1189 coff->local_linesz = LINESZ;
1190 #endif
1191
1192 coff->symbols = (coff_symbol_type *) NULL;
1193 bfd_get_start_address(abfd) = internal_f->f_opthdr ? internal_a->entry : 0;
1194
1195 return abfd->xvec;
1196 fail:
1197 bfd_release(abfd, coff);
1198 return (bfd_target *)NULL;
1199 }
1200
1201 static bfd_target *
1202 DEFUN(coff_object_p,(abfd),
1203 bfd *abfd)
1204 {
1205 int nscns;
1206 FILHDR filehdr;
1207 AOUTHDR opthdr;
1208 struct internal_filehdr internal_f;
1209 struct internal_aouthdr internal_a;
1210
1211 bfd_error = system_call_error;
1212
1213 /* figure out how much to read */
1214 if (bfd_read((PTR) &filehdr, 1, FILHSZ, abfd) != FILHSZ)
1215 return 0;
1216
1217 bfd_swap_filehdr_in(abfd, &filehdr, &internal_f);
1218
1219 if (BADMAG(internal_f)) {
1220 bfd_error = wrong_format;
1221 return 0;
1222 }
1223 nscns =internal_f.f_nscns;
1224
1225 if (internal_f.f_opthdr) {
1226 if (bfd_read((PTR) &opthdr, 1,AOUTSZ, abfd) != AOUTSZ) {
1227 return 0;
1228 }
1229 bfd_swap_aouthdr_in(abfd, (char *)&opthdr, (char *)&internal_a);
1230 }
1231
1232 /* Seek past the opt hdr stuff */
1233 bfd_seek(abfd, internal_f.f_opthdr + FILHSZ, SEEK_SET);
1234
1235 /* if the optional header is NULL or not the correct size then
1236 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1237 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1238 optional header is of a different size.
1239
1240 But the mips keeps extra stuff in it's opthdr, so dont check
1241 when doing that
1242 */
1243
1244 #if defined(M88) || defined(I960)
1245 if (internal_f.f_opthdr != 0 && AOUTSZ != internal_f.f_opthdr)
1246 return (bfd_target *)NULL;
1247 #endif
1248
1249 return coff_real_object_p(abfd, nscns, &internal_f, &internal_a);
1250 }
1251
1252
1253
1254 #ifndef NO_COFF_LINENOS
1255
1256 static void
1257 DEFUN(coff_count_linenumbers,(abfd),
1258 bfd *abfd)
1259 {
1260 unsigned int limit = bfd_get_symcount(abfd);
1261 unsigned int i;
1262 asymbol **p;
1263 {
1264 asection *s = abfd->sections->output_section;
1265 while (s) {
1266 BFD_ASSERT(s->lineno_count == 0);
1267 s = s->next;
1268 }
1269 }
1270
1271
1272 for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) {
1273 asymbol *q_maybe = *p;
1274 if (q_maybe->the_bfd->xvec->flavour == bfd_target_coff_flavour) {
1275 coff_symbol_type *q = coffsymbol(q_maybe);
1276 if (q->lineno) {
1277 /*
1278 This symbol has a linenumber, increment the owning
1279 section's linenumber count
1280 */
1281 alent *l = q->lineno;
1282 q->symbol.section->output_section->lineno_count++;
1283 l++;
1284 while (l->line_number) {
1285 q->symbol.section->output_section->lineno_count++;
1286 l++;
1287 }
1288 }
1289 }
1290 }
1291 }
1292
1293 #endif /* NO_COFF_LINENOS */
1294
1295 #ifndef NO_COFF_SYMBOLS
1296
1297 /*
1298 Takes a bfd and a symbol, returns a pointer to the coff specific area
1299 of the symbol if there is one.
1300 */
1301 static coff_symbol_type *
1302 DEFUN(coff_symbol_from,(ignore_abfd, symbol),
1303 bfd *ignore_abfd AND
1304 asymbol *symbol)
1305 {
1306 if (symbol->the_bfd->xvec->flavour != bfd_target_coff_flavour)
1307 return (coff_symbol_type *)NULL;
1308
1309 if (symbol->the_bfd->tdata.coff_obj_data == (coff_data_type*)NULL)
1310 return (coff_symbol_type *)NULL;
1311
1312 return (coff_symbol_type *) symbol;
1313 }
1314
1315
1316
1317 static void
1318 DEFUN(fixup_symbol_value,(coff_symbol_ptr, syment),
1319 coff_symbol_type *coff_symbol_ptr AND
1320 struct internal_syment *syment)
1321 {
1322
1323 /* Normalize the symbol flags */
1324 if (coff_symbol_ptr->symbol.section == &bfd_com_section) {
1325 /* a common symbol is undefined with a value */
1326 syment->n_scnum = N_UNDEF;
1327 syment->n_value = coff_symbol_ptr->symbol.value;
1328 }
1329 else if (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING) {
1330 syment->n_value = coff_symbol_ptr->symbol.value;
1331 }
1332 else if (coff_symbol_ptr->symbol.section == & bfd_und_section) {
1333 syment->n_scnum = N_UNDEF;
1334 syment->n_value = 0;
1335 }
1336 else {
1337 if (coff_symbol_ptr->symbol.section) {
1338 syment->n_scnum =
1339 coff_symbol_ptr->symbol.section->output_section->target_index;
1340
1341 syment->n_value =
1342 coff_symbol_ptr->symbol.value +
1343 coff_symbol_ptr->symbol.section->output_offset +
1344 coff_symbol_ptr->symbol.section->output_section->vma;
1345 }
1346 else {
1347 BFD_ASSERT(0);
1348 /* This can happen, but I don't know why yet (steve@cygnus.com) */
1349 syment->n_scnum = N_ABS;
1350 syment->n_value = coff_symbol_ptr->symbol.value;
1351 }
1352 }
1353 }
1354
1355 /* run through all the symbols in the symbol table and work out what
1356 their indexes into the symbol table will be when output
1357
1358 Coff requires that each C_FILE symbol points to the next one in the
1359 chain, and that the last one points to the first external symbol. We
1360 do that here too.
1361
1362 */
1363 static void
1364 DEFUN(coff_renumber_symbols,(bfd_ptr),
1365 bfd *bfd_ptr)
1366 {
1367 unsigned int symbol_count = bfd_get_symcount(bfd_ptr);
1368 asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols;
1369 unsigned int native_index = 0;
1370 struct internal_syment *last_file = (struct internal_syment *)NULL;
1371 unsigned int symbol_index;
1372
1373 /* COFF demands that undefined symbols come after all other symbols.
1374 Since we don't need to impose this extra knowledge on all our client
1375 programs, deal with that here. Sort the symbol table; just move the
1376 undefined symbols to the end, leaving the rest alone. */
1377 /* @@ Do we have some condition we could test for, so we don't always
1378 have to do this? I don't think relocatability is quite right, but
1379 I'm not certain. [raeburn:19920508.1711EST] */
1380 {
1381 asymbol **newsyms;
1382 int i;
1383
1384 newsyms = (asymbol **) bfd_alloc_by_size_t (bfd_ptr,
1385 sizeof (asymbol *)
1386 * (symbol_count + 1));
1387 bfd_ptr->outsymbols = newsyms;
1388 for (i = 0; i < symbol_count; i++)
1389 if (symbol_ptr_ptr[i]->section != &bfd_und_section)
1390 *newsyms++ = symbol_ptr_ptr[i];
1391 for (i = 0; i < symbol_count; i++)
1392 if (symbol_ptr_ptr[i]->section == &bfd_und_section)
1393 *newsyms++ = symbol_ptr_ptr[i];
1394 *newsyms = (asymbol *) NULL;
1395 symbol_ptr_ptr = bfd_ptr->outsymbols;
1396 }
1397
1398 for (symbol_index = 0; symbol_index < symbol_count; symbol_index++)
1399 {
1400 coff_symbol_type *coff_symbol_ptr = coff_symbol_from(bfd_ptr, symbol_ptr_ptr[symbol_index]);
1401 if (coff_symbol_ptr && coff_symbol_ptr->native) {
1402 combined_entry_type *s = coff_symbol_ptr->native;
1403 int i;
1404
1405 if (s->u.syment.n_sclass == C_FILE)
1406 {
1407 if (last_file != (struct internal_syment *)NULL) {
1408 last_file->n_value = native_index;
1409 }
1410 last_file = &(s->u.syment);
1411 }
1412 else {
1413
1414 /* Modify the symbol values according to their section and
1415 type */
1416
1417 fixup_symbol_value(coff_symbol_ptr, &(s->u.syment));
1418 }
1419 for (i = 0; i < s->u.syment.n_numaux + 1; i++) {
1420 s[i].offset = native_index ++;
1421 }
1422 }
1423 else {
1424 native_index++;
1425 }
1426 }
1427 obj_conv_table_size (bfd_ptr) = native_index;
1428 }
1429
1430
1431 /*
1432 Run thorough the symbol table again, and fix it so that all pointers to
1433 entries are changed to the entries' index in the output symbol table.
1434
1435 */
1436 static void
1437 DEFUN(coff_mangle_symbols,(bfd_ptr),
1438 bfd *bfd_ptr)
1439 {
1440 unsigned int symbol_count = bfd_get_symcount(bfd_ptr);
1441 asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols;
1442 unsigned int symbol_index;
1443
1444 for (symbol_index = 0; symbol_index < symbol_count; symbol_index++)
1445 {
1446 coff_symbol_type *coff_symbol_ptr =
1447 coff_symbol_from(bfd_ptr, symbol_ptr_ptr[symbol_index]);
1448
1449 if (coff_symbol_ptr && coff_symbol_ptr->native) {
1450 int i;
1451 combined_entry_type *s = coff_symbol_ptr->native;
1452
1453 for (i = 0; i < s->u.syment.n_numaux ; i++) {
1454 combined_entry_type *a = s + i + 1;
1455 if (a->fix_tag) {
1456 a->u.auxent.x_sym.x_tagndx.l =
1457 a->u.auxent.x_sym.x_tagndx.p->offset;
1458 a->fix_tag = 0;
1459 }
1460 if (a->fix_end) {
1461 a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l =
1462 a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p->offset;
1463 a->fix_end = 0;
1464
1465 }
1466
1467 }
1468 }
1469 }
1470 }
1471
1472 static int string_size;
1473 static void
1474 DEFUN(coff_fix_symbol_name,(ignore_abfd, symbol, native),
1475 bfd *ignore_abfd AND
1476 asymbol *symbol AND
1477 combined_entry_type *native)
1478 {
1479 unsigned int name_length;
1480 union internal_auxent *auxent;
1481 char * name = ( char *)(symbol->name);
1482
1483 if (name == (char *) NULL) {
1484 /* coff symbols always have names, so we'll make one up */
1485 symbol->name = "strange";
1486 name = (char *)symbol->name;
1487 }
1488 name_length = strlen(name);
1489
1490 if (native->u.syment.n_sclass == C_FILE) {
1491 strncpy(native->u.syment._n._n_name, ".file", SYMNMLEN);
1492 auxent = &(native+1)->u.auxent;
1493
1494 #ifdef COFF_LONG_FILENAMES
1495 if (name_length <= FILNMLEN) {
1496 strncpy(auxent->x_file.x_fname, name, FILNMLEN);
1497 }
1498 else {
1499 auxent->x_file.x_n.x_offset = string_size + 4;
1500 auxent->x_file.x_n.x_zeroes = 0;
1501 string_size += name_length + 1;
1502 }
1503 #else
1504 strncpy(auxent->x_file.x_fname, name, FILNMLEN);
1505 if (name_length > FILNMLEN) {
1506 name[FILNMLEN] = '\0';
1507 }
1508 #endif
1509 }
1510 else
1511 { /* NOT A C_FILE SYMBOL */
1512 if (name_length <= SYMNMLEN) {
1513 /* This name will fit into the symbol neatly */
1514 strncpy(native->u.syment._n._n_name, symbol->name, SYMNMLEN);
1515 }
1516 else {
1517 native->u.syment._n._n_n._n_offset = string_size + 4;
1518 native->u.syment._n._n_n._n_zeroes = 0;
1519 string_size += name_length + 1;
1520 }
1521 }
1522 }
1523
1524
1525
1526 static unsigned int
1527 DEFUN(coff_write_symbol,(abfd, symbol, native, written),
1528 bfd *abfd AND
1529 asymbol *symbol AND
1530 combined_entry_type *native AND
1531 unsigned int written)
1532 {
1533 unsigned int numaux = native->u.syment.n_numaux;
1534 int type = native->u.syment.n_type;
1535 int class = native->u.syment.n_sclass;
1536 SYMENT buf;
1537 unsigned int j;
1538
1539 /* @@ bfd_debug_section isn't accessible outside this file, but we know
1540 that C_FILE symbols belong there. So move them. */
1541 if (native->u.syment.n_sclass == C_FILE)
1542 symbol->section = &bfd_debug_section;
1543
1544 if (symbol->section == &bfd_abs_section)
1545 {
1546 native->u.syment.n_scnum = N_ABS;
1547 }
1548 else if (symbol->section == &bfd_debug_section)
1549 {
1550 native->u.syment.n_scnum = N_DEBUG;
1551 }
1552 else if (symbol->section == &bfd_und_section)
1553 {
1554 native->u.syment.n_scnum = N_UNDEF;
1555 }
1556 else
1557 {
1558 native->u.syment.n_scnum =
1559 symbol->section->output_section->target_index;
1560 }
1561
1562
1563 coff_fix_symbol_name(abfd, symbol, native);
1564
1565 coff_swap_sym_out(abfd, &native->u.syment, &buf);
1566 bfd_write((PTR)& buf, 1, SYMESZ, abfd);
1567 for (j = 0; j < native->u.syment.n_numaux; j++)
1568 {
1569 AUXENT buf1;
1570 memset((PTR)&buf, 0, AUXESZ);
1571 coff_swap_aux_out(abfd,
1572 &( (native + j + 1)->u.auxent), type, class, &buf1);
1573 bfd_write((PTR) (&buf1), 1, AUXESZ, abfd);
1574 }
1575 /*
1576 Reuse somewhere in the symbol to keep the index
1577 */
1578 set_index(symbol, written);
1579 return written + 1 + numaux;
1580 }
1581
1582
1583 static unsigned int
1584 DEFUN(coff_write_alien_symbol,(abfd, symbol, written),
1585 bfd *abfd AND
1586 asymbol *symbol AND
1587 unsigned int written)
1588 {
1589 /*
1590 This symbol has been created by the loader, or come from a non
1591 coff format. It has no native element to inherit, make our
1592 own
1593 */
1594 combined_entry_type *native;
1595 combined_entry_type dummy;
1596 native = &dummy;
1597 native->u.syment.n_type = T_NULL;
1598 #ifdef I960
1599 native->u.syment.n_flags = 0;
1600 #endif
1601 if (symbol->section == &bfd_und_section)
1602 {
1603 native->u.syment.n_scnum = N_UNDEF;
1604 native->u.syment.n_value = symbol->value;
1605 }
1606 else if (symbol->section == &bfd_com_section)
1607 {
1608 native->u.syment.n_scnum = N_UNDEF;
1609 native->u.syment.n_value = symbol->value;
1610
1611 }
1612
1613 else if (symbol->flags & BSF_DEBUGGING) {
1614 /*
1615 remove name so it doesn't take up any space
1616 */
1617 symbol->name = "";
1618 }
1619 else {
1620 native->u.syment.n_scnum = symbol->section->output_section->target_index;
1621 native->u.syment.n_value = symbol->value +
1622 symbol->section->output_section->vma +
1623 symbol->section->output_offset;
1624 #ifdef I960
1625 /* Copy the any flags from the the file hdr into the symbol */
1626 {
1627 coff_symbol_type *c = coff_symbol_from(abfd, symbol);
1628 if (c != (coff_symbol_type *)NULL) {
1629 native->u.syment.n_flags = c->symbol.the_bfd->flags;
1630 }
1631 }
1632 #endif
1633 }
1634
1635 #ifdef HASPAD1
1636 native->u.syment.pad1[0] = 0;
1637 native->u.syment.pad1[0] = 0;
1638 #endif
1639
1640 native->u.syment.n_type = 0;
1641 if (symbol->flags & BSF_LOCAL)
1642 native->u.syment.n_sclass = C_STAT;
1643 else
1644 native->u.syment.n_sclass = C_EXT;
1645 native->u.syment.n_numaux = 0;
1646
1647 return coff_write_symbol(abfd, symbol, native, written);
1648 }
1649
1650 static unsigned int
1651 DEFUN(coff_write_native_symbol,(abfd, symbol, written),
1652 bfd *abfd AND
1653 coff_symbol_type *symbol AND
1654 unsigned int written)
1655 {
1656 /*
1657 Does this symbol have an ascociated line number - if so then
1658 make it remember this symbol index. Also tag the auxent of
1659 this symbol to point to the right place in the lineno table
1660 */
1661 combined_entry_type *native = symbol->native;
1662
1663 alent *lineno = symbol->lineno;
1664
1665 if (lineno && !symbol->done_lineno) {
1666 unsigned int count = 0;
1667 lineno[count].u.offset = written;
1668 if (native->u.syment.n_numaux) {
1669 union internal_auxent *a = &((native+1)->u.auxent);
1670
1671 a->x_sym.x_fcnary.x_fcn.x_lnnoptr =
1672 symbol->symbol.section->output_section->moving_line_filepos;
1673 }
1674 /*
1675 And count and relocate all other linenumbers
1676 */
1677
1678 count++;
1679 while (lineno[count].line_number) {
1680 #if 0
1681 /* 13 april 92. sac
1682 I've been told this, but still need proof:
1683 > The second bug is also in `bfd/coffcode.h'. This bug causes the linker to screw
1684 > up the pc-relocations for all the line numbers in COFF code. This bug isn't
1685 > only specific to A29K implementations, but affects all systems using COFF
1686 > format binaries. Note that in COFF object files, the line number core offsets
1687 > output by the assembler are relative to the start of each procedure, not
1688 > to the start of the .text section. This patch relocates the line numbers
1689 > relative to the `native->u.syment.n_value' instead of the section virtual
1690 > address. modular!olson@cs.arizona.edu (Jon Olson)
1691 */
1692 lineno[count].u.offset += native->u.syment.n_value;
1693
1694 #else
1695 lineno[count].u.offset +=
1696 symbol->symbol.section->output_section->vma +
1697 symbol->symbol.section->output_offset;
1698 #endif
1699 count++;
1700 }
1701 symbol->done_lineno = true;
1702
1703 symbol->symbol.section->output_section->moving_line_filepos +=
1704 count * LINESZ;
1705 }
1706 return coff_write_symbol(abfd, &( symbol->symbol), native,written);
1707 }
1708
1709 static void
1710 DEFUN(coff_write_symbols,(abfd),
1711 bfd *abfd)
1712 {
1713 unsigned int i;
1714 unsigned int limit = bfd_get_symcount(abfd);
1715 unsigned int written = 0;
1716
1717 asymbol **p;
1718
1719 string_size = 0;
1720
1721
1722 /* Seek to the right place */
1723 bfd_seek(abfd, obj_sym_filepos(abfd), SEEK_SET);
1724
1725 /* Output all the symbols we have */
1726
1727 written = 0;
1728 for (p = abfd->outsymbols, i = 0; i < limit; i++, p++)
1729 {
1730 asymbol *symbol = *p;
1731 coff_symbol_type *c_symbol = coff_symbol_from(abfd, symbol);
1732
1733 if (c_symbol == (coff_symbol_type *) NULL ||
1734 c_symbol->native == (combined_entry_type *)NULL)
1735 {
1736 written = coff_write_alien_symbol(abfd, symbol, written);
1737 }
1738 else
1739 {
1740 written = coff_write_native_symbol(abfd, c_symbol, written);
1741 }
1742
1743 }
1744
1745 bfd_get_symcount(abfd) = written;
1746
1747 /* Now write out strings */
1748
1749 if (string_size != 0)
1750 {
1751 unsigned int size = string_size + 4;
1752 bfd_byte buffer[4];
1753
1754 bfd_h_put_32(abfd, size, buffer);
1755 bfd_write((PTR) buffer, 1, sizeof(buffer), abfd);
1756 for (p = abfd->outsymbols, i = 0;
1757 i < limit;
1758 i++, p++)
1759 {
1760 asymbol *q = *p;
1761 size_t name_length = strlen(q->name);
1762 int maxlen;
1763 coff_symbol_type* c_symbol = coff_symbol_from(abfd, q);
1764 maxlen = ((c_symbol != NULL && c_symbol->native != NULL) &&
1765 (c_symbol->native->u.syment.n_sclass == C_FILE)) ?
1766 FILNMLEN : SYMNMLEN;
1767
1768 if (name_length > maxlen) {
1769 bfd_write((PTR) (q->name), 1, name_length + 1, abfd);
1770 }
1771 }
1772 }
1773 else {
1774 /* We would normally not write anything here, but we'll write
1775 out 4 so that any stupid coff reader which tries to read
1776 the string table even when there isn't one won't croak.
1777 */
1778
1779 uint32e_type size = 4;
1780 size = size;
1781 bfd_write((PTR)&size, 1, sizeof(size), abfd);
1782
1783 }
1784 }
1785
1786 /*
1787 SUBSUBSECTION
1788 Writing Relocations
1789
1790 To write relocations, all the back end does is step though the
1791 canonical relocation table, and create an
1792 @code{internal_reloc}. The symbol index to use is removed from
1793 the @code{offset} field in the symbol table supplied, the
1794 address comes directly from the sum of the section base
1795 address and the relocation offset and the type is dug directly
1796 from the howto field. Then the @code{internal_reloc} is
1797 swapped into the shape of an @code{external_reloc} and written
1798 out to disk.
1799
1800 */
1801
1802 static void
1803 DEFUN(coff_write_relocs,(abfd),
1804 bfd *abfd)
1805 {
1806 asection *s;
1807 for (s = abfd->sections; s != (asection *) NULL; s = s->next) {
1808 unsigned int i;
1809 struct external_reloc dst;
1810
1811 arelent **p = s->orelocation;
1812 bfd_seek(abfd, s->rel_filepos, SEEK_SET);
1813 for (i = 0; i < s->reloc_count; i++) {
1814 struct internal_reloc n;
1815 arelent *q = p[i];
1816 memset((PTR)&n, 0, sizeof(n));
1817
1818
1819 #ifndef SWAP_OUT_RELOC_OFFSET
1820 /* @@FIXME COFF relocs don't support addends. Code should probably be
1821 in the target-independent code, using a target flag to decide whether
1822 to fold the addend into the section contents. */
1823
1824 if (q->addend != 0)
1825 #ifdef R_IHCONST
1826 if (q->howto->type != R_IHCONST)
1827 #endif
1828 abort ();
1829 #endif
1830
1831 n.r_vaddr = q->address + s->vma;
1832 /* The 29k const/consth reloc pair is a real kludge - the consth
1833 part doesn't have a symbol - it has an offset. So rebuilt
1834 that here */
1835 #ifdef R_IHCONST
1836 if (q->howto->type == R_IHCONST)
1837 n.r_symndx = q->addend;
1838 else
1839 #endif
1840
1841 if (q->sym_ptr_ptr) {
1842 n.r_symndx = get_index((*(q->sym_ptr_ptr)));
1843 /* Take notice if the symbol reloc points to a symbol we don't have
1844 in our symbol table. What should we do for this?? */
1845 if (n.r_symndx > obj_conv_table_size (abfd))
1846 abort ();
1847 }
1848 #ifdef SELECT_RELOC
1849 /* Work out reloc type from what is required */
1850 SELECT_RELOC(n.r_type, q->howto);
1851 #else
1852 n.r_type = q->howto->type;
1853 #endif
1854 coff_swap_reloc_out(abfd, &n, &dst);
1855 bfd_write((PTR) &dst, 1, RELSZ, abfd);
1856 }
1857 }
1858 }
1859 #endif /* NO_COFF_SYMBOLS */
1860
1861 #ifndef NO_COFF_LINENOS
1862
1863 static void
1864 DEFUN(coff_write_linenumbers,(abfd),
1865 bfd *abfd)
1866 {
1867 asection *s;
1868 for (s = abfd->sections; s != (asection *) NULL; s = s->next) {
1869 if (s->lineno_count) {
1870 asymbol **q = abfd->outsymbols;
1871 bfd_seek(abfd, s->line_filepos, SEEK_SET);
1872 /* Find all the linenumbers in this section */
1873 while (*q) {
1874 asymbol *p = *q;
1875 alent *l = BFD_SEND(p->the_bfd, _get_lineno, (p->the_bfd, p));
1876 if (l) {
1877 /* Found a linenumber entry, output */
1878 struct internal_lineno out;
1879 LINENO buff;
1880 memset( (PTR)&out, 0, sizeof(out));
1881 out.l_lnno = 0;
1882 out.l_addr.l_symndx = l->u.offset;
1883 coff_swap_lineno_out(abfd, &out, &buff);
1884 bfd_write((PTR) &buff, 1, LINESZ, abfd);
1885 l++;
1886 while (l->line_number) {
1887 out.l_lnno = l->line_number;
1888 out.l_addr.l_symndx = l->u.offset;
1889 coff_swap_lineno_out(abfd, &out, &buff);
1890 bfd_write((PTR) &buff, 1, LINESZ, abfd);
1891 l++;
1892 }
1893 }
1894 q++;
1895 }
1896 }
1897 }
1898 }
1899
1900 static alent *
1901 DEFUN(coff_get_lineno,(ignore_abfd, symbol),
1902 bfd *ignore_abfd AND
1903 asymbol *symbol)
1904 {
1905 return coffsymbol(symbol)->lineno;
1906 }
1907
1908 #endif /* NO_COFF_LINENOS */
1909
1910 static asymbol *
1911 coff_make_empty_symbol(abfd)
1912 bfd *abfd;
1913 {
1914 coff_symbol_type *new = (coff_symbol_type *) bfd_alloc(abfd, sizeof(coff_symbol_type));
1915 if (new == NULL) {
1916 bfd_error = no_memory;
1917 return (NULL);
1918 } /* on error */
1919 new->symbol.section = 0;
1920 new->native = 0;
1921 new->lineno = (alent *) NULL;
1922 new->done_lineno = false;
1923 new->symbol.the_bfd = abfd;
1924 return &new->symbol;
1925 }
1926
1927 #ifndef NO_COFF_SYMBOLS
1928
1929 static asymbol *
1930 DEFUN (coff_make_debug_symbol, (abfd, ptr, sz),
1931 bfd *abfd AND
1932 PTR ptr AND
1933 unsigned long sz)
1934 {
1935 coff_symbol_type *new = (coff_symbol_type *) bfd_alloc(abfd, sizeof(coff_symbol_type));
1936 if (new == NULL) {
1937 bfd_error = no_memory;
1938 return (NULL);
1939 } /* on error */
1940 /* @@ This shouldn't be using a constant multiplier. */
1941 new->native = (combined_entry_type *) bfd_zalloc (abfd, sizeof (combined_entry_type) * 10);
1942 new->symbol.section = &bfd_debug_section;
1943 new->lineno = (alent *) NULL;
1944 new->done_lineno = false;
1945 new->symbol.the_bfd = abfd;
1946 return &new->symbol;
1947 }
1948
1949 static void
1950 DEFUN(coff_print_symbol,(ignore_abfd, filep, symbol, how),
1951 bfd *ignore_abfd AND
1952 PTR filep AND
1953 asymbol *symbol AND
1954 bfd_print_symbol_type how)
1955 {
1956 FILE *file = (FILE *)filep;
1957 switch (how) {
1958 case bfd_print_symbol_name:
1959 fprintf(file, "%s", symbol->name);
1960 break;
1961 case bfd_print_symbol_more:
1962 fprintf(file, "coff %lx %lx", (unsigned long) coffsymbol(symbol)->native,
1963 (unsigned long) coffsymbol(symbol)->lineno);
1964 break;
1965 case bfd_print_symbol_nm:
1966
1967 {
1968 CONST char *section_name = symbol->section->name;
1969 bfd_print_symbol_vandf((PTR) file, symbol);
1970
1971
1972 fprintf(file, " %-5s %s %s %s",
1973 section_name,
1974 coffsymbol(symbol)->native ? "n" : "g",
1975 coffsymbol(symbol)->lineno ? "l" : " ",
1976 symbol->name);
1977 }
1978
1979
1980 break;
1981 case bfd_print_symbol_all:
1982 /* Print out the symbols in a reasonable way */
1983 {
1984 CONST char *section_name = symbol->section->name;
1985
1986
1987 if (coffsymbol(symbol)->native)
1988 {
1989 unsigned int aux;
1990 combined_entry_type *combined = coffsymbol(symbol)->native;
1991 combined_entry_type *root = obj_raw_syments(ignore_abfd);
1992
1993 fprintf(file,"[%3d]",
1994 combined - root);
1995
1996
1997 fprintf(file, "(sc %2d)(fl%4x)(ty%3x)(sc%3d) nx(%d) %08x %s",
1998 combined->u.syment.n_scnum,
1999 combined->u.syment.n_flags,
2000 combined->u.syment.n_type,
2001 combined->u.syment.n_sclass,
2002 combined->u.syment.n_numaux,
2003 combined->u.syment.n_value,
2004 symbol->name
2005 );
2006 for (aux = 0; aux < combined->u.syment.n_numaux; aux++)
2007 {
2008 fprintf(file,"\n");
2009 switch (combined->u.syment.n_sclass) {
2010 case C_FILE:
2011 fprintf(file, "File ");
2012 break;
2013 default:
2014 fprintf(file, "AUX lnno %x size %x tagndx %x",
2015 combined[aux+1].u.auxent.x_sym.x_misc.x_lnsz.x_lnno,
2016 combined[aux+1].u.auxent.x_sym.x_misc.x_lnsz.x_size,
2017 combined[aux+1].u.auxent.x_sym.x_tagndx.l);
2018 break;
2019
2020 }
2021
2022 }
2023
2024 {
2025 struct lineno_cache_entry *l = coffsymbol(symbol)->lineno;
2026 if (l)
2027 {
2028 printf("\n%s :", l->u.sym->name);
2029 l++;
2030 while (l->line_number)
2031 {
2032 printf("\n%4d : %x",
2033 l->line_number,
2034 l->u.offset);
2035 l++;
2036
2037 }
2038 }
2039 }
2040
2041
2042
2043 }
2044
2045 else {
2046 bfd_print_symbol_vandf((PTR) file, symbol);
2047 fprintf(file, " %-5s %s %s %s",
2048 section_name,
2049 coffsymbol(symbol)->native ? "n" : "g",
2050 coffsymbol(symbol)->lineno ? "l" : " ",
2051 symbol->name);
2052 }
2053
2054 }
2055
2056 }
2057 }
2058
2059 #endif /* NO_COFF_SYMBOLS */
2060
2061 /* Set flags and magic number of a coff file from architecture and machine
2062 type. Result is true if we can represent the arch&type, false if not. */
2063
2064 static boolean
2065 DEFUN(coff_set_flags,(abfd, magicp, flagsp),
2066 bfd *abfd AND
2067 unsigned *magicp AND
2068 unsigned short *flagsp)
2069 {
2070 switch (bfd_get_arch(abfd)) {
2071 #ifdef Z8KMAGIC
2072 case bfd_arch_z8k:
2073 *magicp = Z8KMAGIC;
2074 switch (bfd_get_mach(abfd))
2075 {
2076 case bfd_mach_z8001:
2077 *flagsp = F_Z8001;
2078 break;
2079 case bfd_mach_z8002:
2080 *flagsp = F_Z8002;
2081 break;
2082 default:
2083 return false;
2084 }
2085 return true;
2086 #endif
2087 #ifdef I960ROMAGIC
2088
2089 case bfd_arch_i960:
2090
2091 {
2092 unsigned flags;
2093 *magicp = I960ROMAGIC;
2094 /*
2095 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
2096 I960RWMAGIC); FIXME???
2097 */
2098 switch (bfd_get_mach(abfd)) {
2099 case bfd_mach_i960_core:
2100 flags = F_I960CORE;
2101 break;
2102 case bfd_mach_i960_kb_sb:
2103 flags = F_I960KB;
2104 break;
2105 case bfd_mach_i960_mc:
2106 flags = F_I960MC;
2107 break;
2108 case bfd_mach_i960_xa:
2109 flags = F_I960XA;
2110 break;
2111 case bfd_mach_i960_ca:
2112 flags = F_I960CA;
2113 break;
2114 case bfd_mach_i960_ka_sa:
2115 flags = F_I960KA;
2116 break;
2117 default:
2118 return false;
2119 }
2120 *flagsp = flags;
2121 return true;
2122 }
2123 break;
2124 #endif
2125 #ifdef MIPS
2126 case bfd_arch_mips:
2127 *magicp = MIPS_MAGIC_2;
2128 return true;
2129 break;
2130 #endif
2131 #ifdef I386MAGIC
2132 case bfd_arch_i386:
2133 *magicp = I386MAGIC;
2134 return true;
2135 break;
2136 #endif
2137 #ifdef MC68MAGIC
2138 case bfd_arch_m68k:
2139 *magicp = MC68MAGIC;
2140 return true;
2141 break;
2142 #endif
2143
2144 #ifdef MC88MAGIC
2145 case bfd_arch_m88k:
2146 *magicp = MC88OMAGIC;
2147 return true;
2148 break;
2149 #endif
2150 #ifdef H8300MAGIC
2151 case bfd_arch_h8300:
2152 *magicp = H8300MAGIC;
2153 return true;
2154 break;
2155 #endif
2156 #ifdef A29K_MAGIC_BIG
2157 case bfd_arch_a29k:
2158 if (abfd->xvec->byteorder_big_p)
2159 *magicp = A29K_MAGIC_BIG;
2160 else
2161 *magicp = A29K_MAGIC_LITTLE;
2162 return true;
2163 break;
2164 #endif
2165
2166 #ifdef WE32KMAGIC
2167 case bfd_arch_we32k:
2168 *magicp = WE32KMAGIC;
2169 return true;
2170 break;
2171 #endif
2172
2173 #ifdef U802TOCMAGIC
2174 case bfd_arch_rs6000:
2175 *magicp = U802TOCMAGIC;
2176 return true;
2177 break;
2178 #endif
2179
2180 default: /* Unknown architecture */
2181 /* return false; -- fall through to "return false" below, to avoid
2182 "statement never reached" errors on the one below. */
2183 break;
2184 }
2185
2186 return false;
2187 }
2188
2189
2190 static boolean
2191 DEFUN(coff_set_arch_mach,(abfd, arch, machine),
2192 bfd *abfd AND
2193 enum bfd_architecture arch AND
2194 unsigned long machine)
2195 {
2196 unsigned dummy1;
2197 unsigned short dummy2;
2198 bfd_default_set_arch_mach(abfd, arch, machine);
2199
2200 if (arch != bfd_arch_unknown &&
2201 coff_set_flags(abfd, &dummy1, &dummy2) != true)
2202 return false; /* We can't represent this type */
2203 return true; /* We're easy ... */
2204 }
2205
2206
2207 /* Calculate the file position for each section. */
2208
2209 static void
2210 DEFUN(coff_compute_section_file_positions,(abfd),
2211 bfd *abfd)
2212 {
2213 asection *current;
2214 asection *previous = (asection *)NULL;
2215 file_ptr sofar = FILHSZ;
2216 file_ptr old_sofar;
2217 if (bfd_get_start_address(abfd))
2218 {
2219 /* A start address may have been added to the original file. In this
2220 case it will need an optional header to record it. */
2221 abfd->flags |= EXEC_P;
2222 }
2223
2224 if (abfd->flags & EXEC_P)
2225 sofar += AOUTSZ;
2226
2227 sofar += abfd->section_count * SCNHSZ;
2228 for (current = abfd->sections;
2229 current != (asection *)NULL;
2230 current = current->next) {
2231
2232 /* Only deal with sections which have contents */
2233 if (!(current->flags & SEC_HAS_CONTENTS))
2234 continue;
2235
2236 /* Align the sections in the file to the same boundary on
2237 which they are aligned in virtual memory. I960 doesn't
2238 do this (FIXME) so we can stay in sync with Intel. 960
2239 doesn't yet page from files... */
2240 #ifndef I960
2241 {
2242 /* make sure this section is aligned on the right boundary - by
2243 padding the previous section up if necessary */
2244
2245 old_sofar= sofar;
2246 sofar = BFD_ALIGN(sofar, 1 << current->alignment_power);
2247 if (previous != (asection *)NULL) {
2248 previous->_raw_size += sofar - old_sofar;
2249 }
2250 }
2251
2252 #endif
2253 /* FIXME, in demand paged files, the low order bits of the file
2254 offset must match the low order bits of the virtual address.
2255 "Low order" is apparently implementation defined. Add code
2256 here to round sofar up to match the virtual address. */
2257
2258 current->filepos = sofar;
2259
2260 sofar += current->_raw_size;
2261 #ifndef I960
2262 /* make sure that this section is of the right size too */
2263 old_sofar = sofar;
2264 sofar = BFD_ALIGN(sofar, 1 << current->alignment_power);
2265 current->_raw_size += sofar - old_sofar ;
2266 #endif
2267
2268 previous = current;
2269 }
2270 obj_relocbase(abfd) = sofar;
2271 }
2272
2273 #ifndef NO_COFF_SYMBOLS
2274 static asymbol *
2275 coff_section_symbol (abfd, name)
2276 bfd *abfd;
2277 char *name;
2278 {
2279 asection *sec = bfd_get_section_by_name (abfd, name);
2280 asymbol *sym;
2281 combined_entry_type *csym;
2282
2283 if (!sec)
2284 {
2285 /* create empty symbol */
2286 abort ();
2287 }
2288 sym = sec->symbol;
2289 if (coff_symbol_from (abfd, sym))
2290 csym = coff_symbol_from (abfd, sym)->native;
2291 else
2292 csym = 0;
2293 /* Make sure back-end COFF stuff is there. */
2294 if (csym == 0)
2295 {
2296 struct foo {
2297 coff_symbol_type sym;
2298 /* @@FIXME This shouldn't use a fixed size!! */
2299 combined_entry_type e[10];
2300 };
2301 struct foo *f;
2302 f = (struct foo *) bfd_alloc_by_size_t (abfd, sizeof (*f));
2303 memset ((char *) f, 0, sizeof (*f));
2304 coff_symbol_from (abfd, sym)->native = csym = f->e;
2305 }
2306 csym[0].u.syment.n_sclass = C_STAT;
2307 csym[0].u.syment.n_numaux = 1;
2308 /* SF_SET_STATICS (sym); @@ ??? */
2309 if (sec)
2310 {
2311 csym[1].u.auxent.x_scn.x_scnlen = sec->_raw_size;
2312 csym[1].u.auxent.x_scn.x_nreloc = sec->reloc_count;
2313 csym[1].u.auxent.x_scn.x_nlinno = sec->lineno_count;
2314 }
2315 else
2316 {
2317 csym[1].u.auxent.x_scn.x_scnlen = 0;
2318 csym[1].u.auxent.x_scn.x_nreloc = 0;
2319 csym[1].u.auxent.x_scn.x_nlinno = 0;
2320 }
2321 return sym;
2322 }
2323
2324 /* If .file, .text, .data, .bss symbols are missing, add them. */
2325 /* @@ Should we only be adding missing symbols, or overriding the aux
2326 values for existing section symbols? */
2327 static void
2328 coff_add_missing_symbols (abfd)
2329 bfd *abfd;
2330 {
2331 unsigned int nsyms = bfd_get_symcount (abfd);
2332 asymbol **sympp = abfd->outsymbols;
2333 asymbol **sympp2;
2334 unsigned int i;
2335 int need_text = 1, need_data = 1, need_bss = 1, need_file = 1;
2336 coff_data_type *cdata = coff_data (abfd);
2337
2338 for (i = 0; i < nsyms; i++)
2339 {
2340 coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]);
2341 CONST char *name;
2342 if (csym)
2343 {
2344 /* only do this if there is a coff representation of the input
2345 symbol */
2346 if (csym->native && csym->native->u.syment.n_sclass == C_FILE)
2347 {
2348 need_file = 0;
2349 continue;
2350 }
2351 name = csym->symbol.name;
2352 if (!name)
2353 continue;
2354 if (!strcmp (name, _TEXT))
2355 need_text = 0;
2356 else if (!strcmp (name, _DATA))
2357 need_data = 0;
2358 else if (!strcmp (name, _BSS))
2359 need_bss = 0;
2360 }
2361 }
2362 /* Now i == bfd_get_symcount (abfd). */
2363 /* @@ For now, don't deal with .file symbol. */
2364 need_file = 0;
2365
2366 if (!need_text && !need_data && !need_bss && !need_file)
2367 return;
2368 nsyms += need_text + need_data + need_bss + need_file;
2369 sympp2 = (asymbol**) bfd_alloc_by_size_t (abfd, nsyms * sizeof (asymbol *));
2370 memcpy (sympp2, sympp, i * sizeof (asymbol *));
2371 if (need_file)
2372 {
2373 /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */
2374 abort ();
2375 }
2376 if (need_text)
2377 sympp2[i++] = coff_section_symbol (abfd, _TEXT);
2378 if (need_data)
2379 sympp2[i++] = coff_section_symbol (abfd, _DATA);
2380 if (need_bss)
2381 sympp2[i++] = coff_section_symbol (abfd, _BSS);
2382 BFD_ASSERT (i == nsyms);
2383 bfd_set_symtab (abfd, sympp2, nsyms);
2384 }
2385 #endif /* NO_COFF_SYMBOLS */
2386
2387 /* SUPPRESS 558 */
2388 /* SUPPRESS 529 */
2389 static boolean
2390 DEFUN(coff_write_object_contents,(abfd),
2391 bfd *abfd)
2392 {
2393 asection *current;
2394 unsigned int count;
2395
2396 boolean hasrelocs = false;
2397 boolean haslinno = false;
2398 file_ptr reloc_base;
2399 file_ptr lineno_base;
2400 file_ptr sym_base;
2401 file_ptr scn_base;
2402 file_ptr data_base;
2403 unsigned long reloc_size = 0;
2404 unsigned long lnno_size = 0;
2405 asection *text_sec = NULL;
2406 asection *data_sec = NULL;
2407 asection *bss_sec = NULL;
2408
2409 struct internal_filehdr internal_f;
2410 struct internal_aouthdr internal_a;
2411
2412
2413 bfd_error = system_call_error;
2414 /* Number the output sections, starting from one on the first section
2415 with a name which doesn't start with a *.
2416 @@ The code doesn't make this check. Is it supposed to be done,
2417 or isn't it?? */
2418 count = 1;
2419 for (current = abfd->sections; current != (asection *)NULL;
2420 current = current->next)
2421 {
2422 current->target_index = count;
2423 count++;
2424 }
2425
2426
2427
2428
2429
2430 if(abfd->output_has_begun == false) {
2431 coff_compute_section_file_positions(abfd);
2432 }
2433
2434 if (abfd->sections != (asection *)NULL) {
2435 scn_base = abfd->sections->filepos;
2436 }
2437 else {
2438 scn_base = 0;
2439 }
2440 if (bfd_seek(abfd, scn_base, SEEK_SET) != 0)
2441 return false;
2442 reloc_base = obj_relocbase(abfd);
2443
2444 /* Make a pass through the symbol table to count line number entries and
2445 put them into the correct asections */
2446
2447 #ifndef NO_COFF_LINENOS
2448 coff_count_linenumbers(abfd);
2449 #endif
2450 data_base = scn_base;
2451
2452 /* Work out the size of the reloc and linno areas */
2453
2454 for (current = abfd->sections; current != NULL; current =
2455 current->next)
2456 {
2457 /* We give section headers to +ve indexes */
2458 if (current->target_index > 0)
2459 {
2460
2461 reloc_size += current->reloc_count * RELSZ;
2462 #ifndef NO_COFF_LINENOS
2463 lnno_size += current->lineno_count * LINESZ;
2464 #endif
2465 data_base += SCNHSZ;
2466 }
2467
2468 }
2469
2470 lineno_base = reloc_base + reloc_size;
2471 sym_base = lineno_base + lnno_size;
2472
2473 /* Indicate in each section->line_filepos its actual file address */
2474 for (current = abfd->sections; current != NULL; current =
2475 current->next)
2476 {
2477 if (current->target_index > 0)
2478 {
2479
2480 if (current->lineno_count) {
2481 current->line_filepos = lineno_base;
2482 current->moving_line_filepos = lineno_base;
2483 #ifndef NO_COFF_LINENOS
2484 lineno_base += current->lineno_count * LINESZ;
2485 #endif
2486 }
2487 else {
2488 current->line_filepos = 0;
2489 }
2490 if (current->reloc_count) {
2491 current->rel_filepos = reloc_base;
2492 reloc_base += current->reloc_count * RELSZ;
2493 }
2494 else {
2495 current->rel_filepos = 0;
2496 }
2497 }
2498 }
2499
2500
2501
2502 /* Write section headers to the file. */
2503 internal_f.f_nscns = 0;
2504 bfd_seek(abfd,
2505 (file_ptr) ((abfd->flags & EXEC_P) ?
2506 (FILHSZ + AOUTSZ) : FILHSZ),
2507 SEEK_SET);
2508
2509 {
2510 #if 0
2511 unsigned int pad = abfd->flags & D_PAGED ? data_base : 0;
2512 #endif
2513 unsigned int pad = 0;
2514
2515 for (current = abfd->sections;
2516 current != NULL;
2517 current = current->next) {
2518 struct internal_scnhdr section;
2519 if (current->target_index > 0)
2520 {
2521 internal_f.f_nscns ++;
2522 strncpy(&(section.s_name[0]), current->name, 8);
2523 section.s_vaddr = current->vma + pad;
2524 section.s_paddr = current->vma + pad;
2525 section.s_size = current->_raw_size - pad;
2526 /*
2527 If this section has no size or is unloadable then the scnptr
2528 will be 0 too
2529 */
2530 if (current->_raw_size - pad == 0 ||
2531 (current->flags & SEC_LOAD) == 0) {
2532 section.s_scnptr = 0;
2533 }
2534 else {
2535 section.s_scnptr = current->filepos;
2536 }
2537 section.s_relptr = current->rel_filepos;
2538 section.s_lnnoptr = current->line_filepos;
2539 section.s_nreloc = current->reloc_count;
2540 section.s_nlnno = current->lineno_count;
2541 if (current->reloc_count != 0)
2542 hasrelocs = true;
2543 if (current->lineno_count != 0)
2544 haslinno = true;
2545
2546 section.s_flags = sec_to_styp_flags(current->name,current->flags);
2547
2548 if (!strcmp(current->name, _TEXT)) {
2549 text_sec = current;
2550 } else if (!strcmp(current->name, _DATA)) {
2551 data_sec = current;
2552 } else if (!strcmp(current->name, _BSS)) {
2553 bss_sec = current;
2554 }
2555
2556 #ifdef I960
2557 section.s_align = (current->alignment_power
2558 ? 1 << current->alignment_power
2559 : 0);
2560
2561 #endif
2562 {
2563 SCNHDR buff;
2564
2565 coff_swap_scnhdr_out(abfd, &section, &buff);
2566 bfd_write((PTR) (&buff), 1, SCNHSZ, abfd);
2567
2568 }
2569
2570 pad = 0;
2571 }
2572 }
2573 }
2574
2575
2576 /* OK, now set up the filehdr... */
2577
2578 /* Don't include the internal abs section in the section count */
2579
2580 /*
2581 We will NOT put a fucking timestamp in the header here. Every time you
2582 put it back, I will come in and take it out again. I'm sorry. This
2583 field does not belong here. We fill it with a 0 so it compares the
2584 same but is not a reasonable time. -- gnu@cygnus.com
2585 */
2586 /*
2587 Well, I like it, and now we have *customers* who have requested it,
2588 so I'm conditionally compiling it in.
2589
2590 sac@cygnus.com
2591 */
2592 #ifndef NOCOFF_TIMESTAMP
2593 internal_f.f_timdat = time(0);
2594 #else
2595 internal_f.f_timdat = 0;
2596 #endif
2597
2598 if (bfd_get_symcount(abfd) != 0)
2599 internal_f.f_symptr = sym_base;
2600 else
2601 internal_f.f_symptr = 0;
2602
2603 internal_f.f_flags = 0;
2604
2605 if (abfd->flags & EXEC_P)
2606 internal_f.f_opthdr = AOUTSZ;
2607 else
2608 internal_f.f_opthdr = 0;
2609
2610 if (!hasrelocs)
2611 internal_f.f_flags |= F_RELFLG;
2612 if (!haslinno)
2613 internal_f.f_flags |= F_LNNO;
2614 if (0 == bfd_get_symcount(abfd))
2615 internal_f.f_flags |= F_LSYMS;
2616 if (abfd->flags & EXEC_P)
2617 internal_f.f_flags |= F_EXEC;
2618
2619 if (!abfd->xvec->byteorder_big_p)
2620 internal_f.f_flags |= F_AR32WR;
2621 else
2622 internal_f.f_flags |= F_AR32W;
2623
2624 /*
2625 FIXME, should do something about the other byte orders and
2626 architectures.
2627 */
2628
2629 /* Set up architecture-dependent stuff */
2630
2631 { unsigned int magic = 0;
2632 unsigned short flags = 0;
2633 coff_set_flags(abfd, &magic, &flags);
2634 internal_f.f_magic = magic;
2635 internal_f.f_flags |= flags;
2636 /* ...and the "opt"hdr... */
2637
2638 #ifdef A29K
2639 # ifdef ULTRA3 /* NYU's machine */
2640 /* FIXME: This is a bogus check. I really want to see if there
2641 * is a .shbss or a .shdata section, if so then set the magic
2642 * number to indicate a shared data executable.
2643 */
2644 if (internal_f.f_nscns >= 7)
2645 internal_a.magic = SHMAGIC; /* Shared magic */
2646 else
2647 # endif /* ULTRA3 */
2648 internal_a.magic = NMAGIC; /* Assume separate i/d */
2649 #define __A_MAGIC_SET__
2650 #endif /* A29K */
2651 #ifdef I960
2652 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
2653 #define __A_MAGIC_SET__
2654 #endif /* I960 */
2655 #if M88
2656 #define __A_MAGIC_SET__
2657 internal_a.magic = PAGEMAGICBCS;
2658 #endif /* M88 */
2659
2660 #if M68 || MIPS || WE32K
2661 #define __A_MAGIC_SET__
2662 /* Never was anything here for the 68k */
2663 #endif /* M68 || MIPS || WE32K */
2664
2665 #if I386
2666 # define __A_MAGIC_SET__
2667 internal_a.magic = ZMAGIC;
2668 #endif /* I386 */
2669
2670 #if RS6000COFF_C
2671 #define __A_MAGIC_SET__
2672 internal_a.magic = (abfd->flags & D_PAGED)? RS6K_AOUTHDR_ZMAGIC:
2673 (abfd->flags & WP_TEXT)? RS6K_AOUTHDR_NMAGIC:
2674 RS6K_AOUTHDR_OMAGIC;
2675 #endif
2676
2677 #ifndef __A_MAGIC_SET__
2678 # include "Your aouthdr magic number is not being set!"
2679 #else
2680 # undef __A_MAGIC_SET__
2681 #endif
2682 }
2683 /* Now should write relocs, strings, syms */
2684 obj_sym_filepos(abfd) = sym_base;
2685
2686 #ifndef NO_COFF_SYMBOLS
2687 if (bfd_get_symcount(abfd) != 0) {
2688 coff_add_missing_symbols (abfd);
2689 coff_renumber_symbols(abfd);
2690 coff_mangle_symbols(abfd);
2691 coff_write_symbols(abfd);
2692 coff_write_linenumbers(abfd);
2693 coff_write_relocs(abfd);
2694 }
2695 #endif /* NO_COFF_SYMBOLS */
2696 if (text_sec) {
2697 internal_a.tsize = bfd_get_section_size_before_reloc(text_sec);
2698 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
2699 }
2700 if (data_sec) {
2701 internal_a.dsize = bfd_get_section_size_before_reloc(data_sec);
2702 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
2703 }
2704 if (bss_sec) {
2705 internal_a.bsize = bfd_get_section_size_before_reloc(bss_sec);
2706 }
2707
2708 internal_a.entry = bfd_get_start_address(abfd);
2709 internal_f.f_nsyms = bfd_get_symcount(abfd);
2710
2711 /* now write them */
2712 if (bfd_seek(abfd, 0L, SEEK_SET) != 0)
2713 return false;
2714 {
2715 FILHDR buff;
2716 coff_swap_filehdr_out(abfd, (PTR)&internal_f, (PTR)&buff);
2717 bfd_write((PTR) &buff, 1, FILHSZ, abfd);
2718 }
2719 if (abfd->flags & EXEC_P) {
2720 AOUTHDR buff;
2721 coff_swap_aouthdr_out(abfd, (PTR)&internal_a, (PTR)&buff);
2722 bfd_write((PTR) &buff, 1, AOUTSZ, abfd);
2723 }
2724 return true;
2725 }
2726
2727 #ifndef NO_COFF_SYMBOLS
2728
2729 /*
2730 this function transforms the offsets into the symbol table into
2731 pointers to syments.
2732 */
2733
2734
2735 static void
2736 DEFUN(coff_pointerize_aux,(ignore_abfd, table_base, type, class, auxent),
2737 bfd *ignore_abfd AND
2738 combined_entry_type *table_base AND
2739 int type AND
2740 int class AND
2741 combined_entry_type *auxent)
2742 {
2743 /* Don't bother if this is a file or a section */
2744 if (class == C_STAT && type == T_NULL) return;
2745 if (class == C_FILE) return;
2746
2747 /* Otherwise patch up */
2748 if (ISFCN(type) || ISTAG(class) || class == C_BLOCK) {
2749 auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = table_base +
2750 auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l;
2751 auxent->fix_end = 1;
2752 }
2753 if (auxent->u.auxent.x_sym.x_tagndx.l != 0) {
2754 auxent->u.auxent.x_sym.x_tagndx.p =
2755 table_base + auxent->u.auxent.x_sym.x_tagndx.l;
2756 auxent->fix_tag = 1;
2757 }
2758 }
2759
2760 #endif /* NO_COFF_SYMBOLS */
2761
2762 static boolean
2763 DEFUN(coff_set_section_contents,(abfd, section, location, offset, count),
2764 bfd *abfd AND
2765 sec_ptr section AND
2766 PTR location AND
2767 file_ptr offset AND
2768 bfd_size_type count)
2769 {
2770 if (abfd->output_has_begun == false) /* set by bfd.c handler */
2771 coff_compute_section_file_positions(abfd);
2772
2773 bfd_seek(abfd, (file_ptr) (section->filepos + offset), SEEK_SET);
2774
2775 if (count != 0) {
2776 return (bfd_write(location, 1, count, abfd) == count) ? true : false;
2777 }
2778 return true;
2779 }
2780 #if 0
2781 static boolean
2782 coff_close_and_cleanup(abfd)
2783 bfd *abfd;
2784 {
2785 if (!bfd_read_p(abfd))
2786 switch (abfd->format) {
2787 case bfd_archive:
2788 if (!_bfd_write_archive_contents(abfd))
2789 return false;
2790 break;
2791 case bfd_object:
2792 if (!coff_write_object_contents(abfd))
2793 return false;
2794 break;
2795 default:
2796 bfd_error = invalid_operation;
2797 return false;
2798 }
2799
2800 /* We depend on bfd_close to free all the memory on the obstack. */
2801 /* FIXME if bfd_release is not using obstacks! */
2802 return true;
2803 }
2804
2805 #endif
2806 static PTR
2807 buy_and_read(abfd, where, seek_direction, size)
2808 bfd *abfd;
2809 file_ptr where;
2810 int seek_direction;
2811 size_t size;
2812 {
2813 PTR area = (PTR) bfd_alloc(abfd, size);
2814 if (!area) {
2815 bfd_error = no_memory;
2816 return (NULL);
2817 }
2818 bfd_seek(abfd, where, seek_direction);
2819 if (bfd_read(area, 1, size, abfd) != size) {
2820 bfd_error = system_call_error;
2821 return (NULL);
2822 } /* on error */
2823 return (area);
2824 } /* buy_and_read() */
2825
2826
2827 #ifndef NO_COFF_SYMBOLS
2828
2829 static char *
2830 DEFUN(build_string_table,(abfd),
2831 bfd *abfd)
2832 {
2833 char string_table_size_buffer[4];
2834 unsigned int string_table_size;
2835 char *string_table;
2836
2837 /* At this point we should be "seek"'d to the end of the
2838 symbols === the symbol table size. */
2839 if (bfd_read((char *) string_table_size_buffer,
2840 sizeof(string_table_size_buffer),
2841 1, abfd) != sizeof(string_table_size)) {
2842 bfd_error = system_call_error;
2843 return (NULL);
2844 } /* on error */
2845
2846 string_table_size = bfd_h_get_32(abfd, (bfd_byte *) string_table_size_buffer);
2847
2848 if ((string_table = (PTR) bfd_alloc(abfd, string_table_size -= 4)) == NULL) {
2849 bfd_error = no_memory;
2850 return (NULL);
2851 } /* on mallocation error */
2852 if (bfd_read(string_table, string_table_size, 1, abfd) != string_table_size) {
2853 bfd_error = system_call_error;
2854 return (NULL);
2855 }
2856 return string_table;
2857 }
2858
2859 /* Allocate space for the ".debug" section, and read it.
2860 We did not read the debug section until now, because
2861 we didn't want to go to the trouble until someone needed it. */
2862
2863 static char *
2864 DEFUN(build_debug_section,(abfd),
2865 bfd *abfd)
2866 {
2867 char *debug_section;
2868 long position;
2869
2870 asection *sect = bfd_get_section_by_name (abfd, ".debug");
2871
2872 if (!sect) {
2873 bfd_error = no_debug_section;
2874 return NULL;
2875 }
2876
2877 debug_section = (PTR) bfd_alloc (abfd,
2878 bfd_get_section_size_before_reloc (sect));
2879 if (debug_section == NULL) {
2880 bfd_error = no_memory;
2881 return NULL;
2882 }
2883
2884 /* Seek to the beginning of the `.debug' section and read it.
2885 Save the current position first; it is needed by our caller.
2886 Then read debug section and reset the file pointer. */
2887
2888 position = bfd_tell (abfd);
2889 bfd_seek (abfd, sect->filepos, SEEK_SET);
2890 if (bfd_read (debug_section,
2891 bfd_get_section_size_before_reloc (sect), 1, abfd)
2892 != bfd_get_section_size_before_reloc(sect)) {
2893 bfd_error = system_call_error;
2894 return NULL;
2895 }
2896 bfd_seek (abfd, position, SEEK_SET);
2897 return debug_section;
2898 }
2899
2900
2901 /* Return a pointer to a malloc'd copy of 'name'. 'name' may not be
2902 \0-terminated, but will not exceed 'maxlen' characters. The copy *will*
2903 be \0-terminated. */
2904 static char *
2905 DEFUN(copy_name,(abfd, name, maxlen),
2906 bfd *abfd AND
2907 char *name AND
2908 int maxlen)
2909 {
2910 int len;
2911 char *newname;
2912
2913 for (len = 0; len < maxlen; ++len) {
2914 if (name[len] == '\0') {
2915 break;
2916 }
2917 }
2918
2919 if ((newname = (PTR) bfd_alloc(abfd, len+1)) == NULL) {
2920 bfd_error = no_memory;
2921 return (NULL);
2922 }
2923 strncpy(newname, name, len);
2924 newname[len] = '\0';
2925 return newname;
2926 }
2927
2928
2929 /* Read a symbol table into freshly bfd_allocated memory, swap it, and
2930 knit the symbol names into a normalized form. By normalized here I
2931 mean that all symbols have an n_offset pointer that points to a null-
2932 terminated string. */
2933
2934 #ifndef SYMNAME_IN_DEBUG
2935 #define SYMNAME_IN_DEBUG(x) 0
2936 #endif
2937
2938 static combined_entry_type *
2939 DEFUN(get_normalized_symtab,(abfd),
2940 bfd *abfd)
2941 {
2942 combined_entry_type *internal;
2943 combined_entry_type *internal_ptr;
2944 combined_entry_type *symbol_ptr;
2945 combined_entry_type *internal_end;
2946 SYMENT *raw;
2947 SYMENT *raw_src;
2948 SYMENT *raw_end;
2949 char *string_table = NULL;
2950 char *debug_section = NULL;
2951 unsigned long size;
2952
2953 unsigned int raw_size;
2954 if (obj_raw_syments(abfd) != (combined_entry_type *)NULL) {
2955 return obj_raw_syments(abfd);
2956 }
2957 if ((size = bfd_get_symcount(abfd) * sizeof(combined_entry_type)) == 0) {
2958 bfd_error = no_symbols;
2959 return (NULL);
2960 }
2961
2962 internal = (combined_entry_type *)bfd_alloc(abfd, size);
2963 internal_end = internal + bfd_get_symcount(abfd);
2964
2965 raw_size = bfd_get_symcount(abfd) * SYMESZ;
2966 raw = (SYMENT *)bfd_alloc(abfd,raw_size);
2967
2968 if (bfd_seek(abfd, obj_sym_filepos(abfd), SEEK_SET) == -1
2969 || bfd_read((PTR)raw, raw_size, 1, abfd) != raw_size) {
2970 bfd_error = system_call_error;
2971 return (NULL);
2972 }
2973 /* mark the end of the symbols */
2974 raw_end = raw + bfd_get_symcount(abfd);
2975 /*
2976 FIXME SOMEDAY. A string table size of zero is very weird, but
2977 probably possible. If one shows up, it will probably kill us.
2978 */
2979
2980 /* Swap all the raw entries */
2981 for (raw_src = raw, internal_ptr = internal;
2982 raw_src < raw_end;
2983 raw_src++, internal_ptr++) {
2984
2985 unsigned int i;
2986 coff_swap_sym_in(abfd, (PTR)raw_src, (PTR)&internal_ptr->u.syment);
2987 internal_ptr->fix_tag = 0;
2988 internal_ptr->fix_end = 0;
2989 symbol_ptr = internal_ptr;
2990
2991 for (i = 0;
2992 i < symbol_ptr->u.syment.n_numaux;
2993 i++)
2994 {
2995 internal_ptr++;
2996 raw_src++;
2997
2998 internal_ptr->fix_tag = 0;
2999 internal_ptr->fix_end = 0;
3000 coff_swap_aux_in(abfd, (char *)(raw_src),
3001 symbol_ptr->u.syment.n_type,
3002 symbol_ptr->u.syment.n_sclass,
3003 &(internal_ptr->u.auxent));
3004 /* Remember that bal entries arn't pointerized */
3005 if (i != 1 || symbol_ptr->u.syment.n_sclass != C_LEAFPROC)
3006 {
3007
3008 coff_pointerize_aux(abfd,
3009 internal,
3010 symbol_ptr->u.syment.n_type,
3011 symbol_ptr->u.syment.n_sclass,
3012 internal_ptr);
3013 }
3014
3015 }
3016 }
3017
3018 /* Free all the raw stuff */
3019 bfd_release(abfd, raw);
3020
3021 for (internal_ptr = internal; internal_ptr < internal_end;
3022 internal_ptr ++)
3023 {
3024 if (internal_ptr->u.syment.n_sclass == C_FILE) {
3025 /* make a file symbol point to the name in the auxent, since
3026 the text ".file" is redundant */
3027 if ((internal_ptr+1)->u.auxent.x_file.x_n.x_zeroes == 0) {
3028 /* the filename is a long one, point into the string table */
3029 if (string_table == NULL) {
3030 string_table = build_string_table(abfd);
3031 }
3032
3033 internal_ptr->u.syment._n._n_n._n_offset =
3034 (int) (string_table - 4 +
3035 (internal_ptr+1)->u.auxent.x_file.x_n.x_offset);
3036 }
3037 else {
3038 /* ordinary short filename, put into memory anyway */
3039 internal_ptr->u.syment._n._n_n._n_offset = (int)
3040 copy_name(abfd, (internal_ptr+1)->u.auxent.x_file.x_fname,
3041 FILNMLEN);
3042 }
3043 }
3044 else {
3045 if (internal_ptr->u.syment._n._n_n._n_zeroes != 0) {
3046 /* This is a "short" name. Make it long. */
3047 unsigned long i = 0;
3048 char *newstring = NULL;
3049
3050 /* find the length of this string without walking into memory
3051 that isn't ours. */
3052 for (i = 0; i < 8; ++i) {
3053 if (internal_ptr->u.syment._n._n_name[i] == '\0') {
3054 break;
3055 } /* if end of string */
3056 } /* possible lengths of this string. */
3057
3058 if ((newstring = (PTR) bfd_alloc(abfd, ++i)) == NULL) {
3059 bfd_error = no_memory;
3060 return (NULL);
3061 } /* on error */
3062 memset(newstring, 0, i);
3063 strncpy(newstring, internal_ptr->u.syment._n._n_name, i-1);
3064 internal_ptr->u.syment._n._n_n._n_offset = (int) newstring;
3065 internal_ptr->u.syment._n._n_n._n_zeroes = 0;
3066 }
3067 else if (!SYMNAME_IN_DEBUG(&internal_ptr->u.syment)) {
3068 /* Long name already. Point symbol at the string in the table. */
3069 if (string_table == NULL) {
3070 string_table = build_string_table(abfd);
3071 }
3072 internal_ptr->u.syment._n._n_n._n_offset = (int)
3073 (string_table - 4 + internal_ptr->u.syment._n._n_n._n_offset);
3074 }
3075 else {
3076 /* Long name in debug section. Very similar. */
3077 if (debug_section == NULL) {
3078 debug_section = build_debug_section(abfd);
3079 }
3080 internal_ptr->u.syment._n._n_n._n_offset = (int)
3081 (debug_section + internal_ptr->u.syment._n._n_n._n_offset);
3082 }
3083 }
3084 internal_ptr += internal_ptr->u.syment.n_numaux;
3085 }
3086
3087 obj_raw_syments(abfd) = internal;
3088
3089 return (internal);
3090 } /* get_normalized_symtab() */
3091
3092 #endif /* NO_COFF_SYMBOLS */
3093
3094 static
3095 struct sec *
3096 DEFUN(section_from_bfd_index,(abfd, index),
3097 bfd *abfd AND
3098 int index)
3099 {
3100 struct sec *answer = abfd->sections;
3101
3102 if (index == N_ABS)
3103 {
3104 return &bfd_abs_section;
3105 }
3106 if (index == N_UNDEF)
3107 {
3108 return &bfd_und_section;
3109 }
3110 if(index == N_DEBUG)
3111 {
3112 return &bfd_debug_section;
3113
3114 }
3115
3116 while (answer) {
3117 if (answer->target_index == index)
3118 return answer;
3119 answer = answer->next;
3120 }
3121 BFD_ASSERT(0);
3122 return &bfd_und_section; /* For gcc -W and lint. Never executed. */
3123 }
3124
3125 #ifndef NO_COFF_LINENOS
3126
3127 /*
3128 SUBSUBSECTION
3129 Reading Linenumbers
3130
3131 Creating the linenumber table is done by reading in the entire
3132 coff linenumber table, and creating another table for internal use.
3133
3134 A coff line number table is structured so that each function
3135 is marked as having a line number of 0. Each line within the
3136 function is an offset from the first line in the function. The
3137 base of the line number information for the table is stored in
3138 the symbol associated with the function.
3139
3140 The information is copied from the external to the internal
3141 table, and each symbol which marks a function is marked by
3142 pointing its...
3143
3144 How does this work ?
3145
3146 */
3147
3148 static boolean
3149 coff_slurp_line_table(abfd, asect)
3150 bfd *abfd;
3151 asection *asect;
3152 {
3153 LINENO *native_lineno;
3154 alent *lineno_cache;
3155
3156 BFD_ASSERT(asect->lineno == (alent *) NULL);
3157
3158 native_lineno = (LINENO *) buy_and_read(abfd,
3159 asect->line_filepos,
3160 SEEK_SET,
3161 (size_t) (LINESZ *
3162 asect->lineno_count));
3163 lineno_cache =
3164 (alent *) bfd_alloc(abfd, (size_t) ((asect->lineno_count + 1) * sizeof(alent)));
3165 if (lineno_cache == NULL) {
3166 bfd_error = no_memory;
3167 return false;
3168 } else {
3169 unsigned int counter = 0;
3170 alent *cache_ptr = lineno_cache;
3171 LINENO *src = native_lineno;
3172
3173 while (counter < asect->lineno_count) {
3174 struct internal_lineno dst;
3175 coff_swap_lineno_in(abfd, src, &dst);
3176 cache_ptr->line_number = dst.l_lnno;
3177
3178 if (cache_ptr->line_number == 0) {
3179 coff_symbol_type *sym =
3180 (coff_symbol_type *) (dst.l_addr.l_symndx
3181 + obj_raw_syments(abfd))->u.syment._n._n_n._n_zeroes;
3182 cache_ptr->u.sym = (asymbol *) sym;
3183 sym->lineno = cache_ptr;
3184 }
3185 else {
3186 cache_ptr->u.offset = dst.l_addr.l_paddr
3187 - bfd_section_vma(abfd, asect);
3188 } /* If no linenumber expect a symbol index */
3189
3190 cache_ptr++;
3191 src++;
3192 counter++;
3193 }
3194 cache_ptr->line_number = 0;
3195
3196 }
3197 asect->lineno = lineno_cache;
3198 /* FIXME, free native_lineno here, or use alloca or something. */
3199 return true;
3200 } /* coff_slurp_line_table() */
3201
3202 #endif /* NO_COFF_LINENOS */
3203
3204 #ifndef NO_COFF_LINENOS
3205
3206 static boolean
3207 DEFUN(coff_slurp_symbol_table,(abfd),
3208 bfd *abfd)
3209 {
3210 combined_entry_type *native_symbols;
3211 coff_symbol_type *cached_area;
3212 unsigned int *table_ptr;
3213
3214 unsigned int number_of_symbols = 0;
3215 if (obj_symbols(abfd))
3216 return true;
3217 bfd_seek(abfd, obj_sym_filepos(abfd), SEEK_SET);
3218
3219 /* Read in the symbol table */
3220 if ((native_symbols = get_normalized_symtab(abfd)) == NULL) {
3221 return (false);
3222 } /* on error */
3223
3224 /* Allocate enough room for all the symbols in cached form */
3225 cached_area =
3226 (coff_symbol_type *)
3227 bfd_alloc(abfd, (size_t) (bfd_get_symcount(abfd) * sizeof(coff_symbol_type)));
3228
3229 if (cached_area == NULL) {
3230 bfd_error = no_memory;
3231 return false;
3232 } /* on error */
3233 table_ptr =
3234 (unsigned int *)
3235 bfd_alloc(abfd, (size_t) (bfd_get_symcount(abfd) * sizeof(unsigned int)));
3236
3237 if (table_ptr == NULL) {
3238 bfd_error = no_memory;
3239 return false;
3240 }
3241 else
3242 {
3243 coff_symbol_type *dst = cached_area;
3244 unsigned int last_native_index = bfd_get_symcount(abfd);
3245 unsigned int this_index = 0;
3246 while (this_index < last_native_index) {
3247 combined_entry_type *src = native_symbols + this_index;
3248 table_ptr[this_index] = number_of_symbols;
3249 dst->symbol.the_bfd = abfd;
3250
3251 dst->symbol.name = (char *)(src->u.syment._n._n_n._n_offset);
3252 /*
3253 We use the native name field to point to the cached field
3254 */
3255 src->u.syment._n._n_n._n_zeroes = (int) dst;
3256 dst->symbol.section = section_from_bfd_index(abfd,
3257 src->u.syment.n_scnum);
3258 dst->symbol.flags = 0;
3259 dst->done_lineno = false;
3260
3261 switch (src->u.syment.n_sclass) {
3262 #ifdef I960
3263 case C_LEAFEXT:
3264 #if 0
3265 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
3266 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
3267 dst->symbol.flags |= BSF_NOT_AT_END;
3268 #endif
3269 /* Fall through to next case */
3270
3271 #endif
3272
3273 case C_EXT:
3274 #ifdef RS6000COFF_C
3275 case C_HIDEXT:
3276 #endif
3277 if ((src->u.syment.n_scnum) == 0) {
3278 if ((src->u.syment.n_value) == 0) {
3279 dst->symbol.section = &bfd_und_section;
3280 dst->symbol.value= 0;
3281 }
3282 else {
3283 dst->symbol.section = &bfd_com_section;
3284 dst->symbol.value = (src->u.syment.n_value);
3285 }
3286 }
3287 else {
3288 /*
3289 Base the value as an index from the base of the
3290 section
3291 */
3292
3293 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
3294 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
3295
3296 if (ISFCN((src->u.syment.n_type))) {
3297 /*
3298 A function ext does not go at the end of a file
3299 */
3300 dst->symbol.flags |= BSF_NOT_AT_END;
3301 }
3302 }
3303
3304
3305 break;
3306
3307 case C_STAT: /* static */
3308 #ifdef I960
3309 case C_LEAFSTAT: /* static leaf procedure */
3310 #endif
3311 case C_LABEL: /* label */
3312 if (src->u.syment.n_scnum == -2)
3313 dst->symbol.flags = BSF_DEBUGGING;
3314 else
3315 dst->symbol.flags = BSF_LOCAL;
3316 /*
3317 Base the value as an index from the base of the section, if
3318 there is one
3319 */
3320 if (dst->symbol.section)
3321 dst->symbol.value = (src->u.syment.n_value) -
3322 dst->symbol.section->vma;
3323 else
3324 dst->symbol.value = (src->u.syment.n_value) ;
3325 break;
3326
3327 case C_MOS: /* member of structure */
3328 case C_EOS: /* end of structure */
3329 #ifdef NOTDEF /* C_AUTOARG has the same value */
3330 #ifdef C_GLBLREG
3331 case C_GLBLREG: /* A29k-specific storage class */
3332 #endif
3333 #endif
3334 case C_REGPARM: /* register parameter */
3335 case C_REG: /* register variable */
3336 #ifdef C_AUTOARG
3337 case C_AUTOARG: /* 960-specific storage class */
3338 #endif
3339 case C_TPDEF: /* type definition */
3340 case C_ARG:
3341 case C_AUTO: /* automatic variable */
3342 case C_FIELD: /* bit field */
3343 case C_ENTAG: /* enumeration tag */
3344 case C_MOE: /* member of enumeration */
3345 case C_MOU: /* member of union */
3346 case C_UNTAG: /* union tag */
3347 dst->symbol.flags = BSF_DEBUGGING;
3348 dst->symbol.value = (src->u.syment.n_value);
3349 break;
3350
3351 case C_FILE: /* file name */
3352 case C_STRTAG: /* structure tag */
3353 #ifdef RS6000COFF_C
3354 case C_BINCL: /* beginning of include file */
3355 case C_EINCL: /* ending of include file */
3356 case C_GSYM:
3357 case C_LSYM:
3358 case C_PSYM:
3359 case C_RSYM:
3360 case C_RPSYM:
3361 case C_STSYM:
3362 case C_DECL:
3363 case C_ENTRY:
3364 case C_FUN:
3365 case C_BSTAT:
3366 case C_ESTAT:
3367 #endif
3368 dst->symbol.flags = BSF_DEBUGGING;
3369 dst->symbol.value = (src->u.syment.n_value);
3370 break;
3371
3372 case C_BLOCK: /* ".bb" or ".eb" */
3373 case C_FCN: /* ".bf" or ".ef" */
3374 case C_EFCN: /* physical end of function */
3375 dst->symbol.flags = BSF_LOCAL;
3376 /*
3377 Base the value as an index from the base of the section
3378 */
3379 dst->symbol.value = (src->u.syment.n_value) - dst->symbol.section->vma;
3380 break;
3381
3382 case C_NULL:
3383 case C_EXTDEF: /* external definition */
3384 case C_ULABEL: /* undefined label */
3385 case C_USTATIC: /* undefined static */
3386 case C_LINE: /* line # reformatted as symbol table entry */
3387 case C_ALIAS: /* duplicate tag */
3388 case C_HIDDEN: /* ext symbol in dmert public lib */
3389 default:
3390
3391 fprintf(stderr,"Unrecognized storage class %d\n",
3392 src->u.syment.n_sclass);
3393 /* abort();*/
3394 dst->symbol.flags = BSF_DEBUGGING;
3395 dst->symbol.value = (src->u.syment.n_value);
3396 break;
3397 }
3398
3399 /* BFD_ASSERT(dst->symbol.flags != 0);*/
3400
3401 dst->native = src;
3402
3403 dst->symbol.udata = 0;
3404 dst->lineno = (alent *) NULL;
3405 this_index += (src->u.syment.n_numaux) + 1;
3406 dst++;
3407 number_of_symbols++;
3408 } /* walk the native symtab */
3409 } /* bfdize the native symtab */
3410
3411 obj_symbols(abfd) = cached_area;
3412 obj_raw_syments(abfd) = native_symbols;
3413
3414 obj_conv_table_size (abfd) = bfd_get_symcount (abfd);
3415 bfd_get_symcount(abfd) = number_of_symbols;
3416 obj_convert(abfd) = table_ptr;
3417 /* Slurp the line tables for each section too */
3418 {
3419 asection *p;
3420 p = abfd->sections;
3421 while (p) {
3422 coff_slurp_line_table(abfd, p);
3423 p = p->next;
3424 }
3425 }
3426 return true;
3427 } /* coff_slurp_symbol_table() */
3428
3429 static unsigned int
3430 coff_get_symtab_upper_bound(abfd)
3431 bfd *abfd;
3432 {
3433 if (!coff_slurp_symbol_table(abfd))
3434 return 0;
3435
3436 return (bfd_get_symcount(abfd) + 1) * (sizeof(coff_symbol_type *));
3437 }
3438
3439
3440 static unsigned int
3441 DEFUN(coff_get_symtab, (abfd, alocation),
3442 bfd *abfd AND
3443 asymbol **alocation)
3444 {
3445 unsigned int counter = 0;
3446 coff_symbol_type *symbase;
3447 coff_symbol_type **location = (coff_symbol_type **) (alocation);
3448 if (!coff_slurp_symbol_table(abfd))
3449 return 0;
3450
3451 symbase = obj_symbols(abfd);
3452 while (counter < bfd_get_symcount(abfd))
3453 {
3454 /* This nasty code looks at the symbol to decide whether or
3455 not it is descibes a constructor/destructor entry point. It
3456 is structured this way to (hopefully) speed non matches */
3457 #if 0
3458 if (0 && symbase->symbol.name[9] == '$')
3459 {
3460 bfd_constructor_entry(abfd,
3461 (asymbol **)location,
3462 symbase->symbol.name[10] == 'I' ?
3463 "CTOR" : "DTOR");
3464 }
3465 #endif
3466 *(location++) = symbase++;
3467 counter++;
3468 }
3469 *location++ = 0;
3470 return bfd_get_symcount(abfd);
3471 }
3472
3473 #endif /* NO_COFF_SYMBOLS */
3474
3475 static unsigned int
3476 coff_get_reloc_upper_bound(abfd, asect)
3477 bfd *abfd;
3478 sec_ptr asect;
3479 {
3480 if (bfd_get_format(abfd) != bfd_object) {
3481 bfd_error = invalid_operation;
3482 return 0;
3483 }
3484 return (asect->reloc_count + 1) * sizeof(arelent *);
3485 }
3486
3487 /*
3488 SUBSUBSECTION
3489 Reading Relocations
3490
3491 Coff relocations are easily transformed into the internal BFD form
3492 (@code{arelent}).
3493
3494 Reading a coff relocation table is done in the following stages:
3495
3496 o The entire coff relocation table is read into memory.
3497
3498 o Each relocation is processed in turn, first it is swapped from the
3499 external to the internal form.
3500
3501 o The symbol referenced in the relocation's symbol index is
3502 turned intoa pointer into the canonical symbol table. Note
3503 that this table is the same as the one returned by a call to
3504 @code{bfd_canonicalize_symtab}. The back end will call the
3505 routine and save the result if a canonicalization hasn't been done.
3506
3507 o The reloc index is turned into a pointer to a howto
3508 structure, in a back end specific way. For instance, the 386
3509 and 960 use the @code{r_type} to directly produce an index
3510 into a howto table vector; the 88k subtracts a number from the
3511 @code{r_type} field and creates an addend field.
3512
3513
3514 */
3515
3516 #ifndef CALC_ADDEND
3517 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
3518 if (ptr && ptr->the_bfd == abfd \
3519 && ((ptr->flags & BSF_OLD_COMMON)== 0)) \
3520 { \
3521 cache_ptr->addend = -(ptr->section->vma + ptr->value); \
3522 } \
3523 else { \
3524 cache_ptr->addend = 0; \
3525 }
3526 #endif
3527
3528 static boolean
3529 DEFUN(coff_slurp_reloc_table,(abfd, asect, symbols),
3530 bfd *abfd AND
3531 sec_ptr asect AND
3532 asymbol **symbols)
3533 {
3534 RELOC *native_relocs;
3535 arelent *reloc_cache;
3536 arelent *cache_ptr;
3537
3538 unsigned int idx;
3539
3540 if (asect->relocation)
3541 return true;
3542 if (asect->reloc_count == 0)
3543 return true;
3544 if (asect->flags & SEC_CONSTRUCTOR)
3545 return true;
3546 #ifndef NO_COFF_SYMBOLS
3547 if (!coff_slurp_symbol_table(abfd))
3548 return false;
3549 #endif
3550 native_relocs =
3551 (RELOC *) buy_and_read(abfd,
3552 asect->rel_filepos,
3553 SEEK_SET,
3554 (size_t) (RELSZ *
3555 asect->reloc_count));
3556 reloc_cache = (arelent *)
3557 bfd_alloc(abfd, (size_t) (asect->reloc_count * sizeof(arelent)));
3558
3559 if (reloc_cache == NULL) {
3560 bfd_error = no_memory;
3561 return false;
3562 }
3563
3564
3565 for (idx = 0; idx < asect->reloc_count; idx ++)
3566 {
3567 #ifdef RELOC_PROCESSING
3568 struct internal_reloc dst;
3569 struct external_reloc *src;
3570
3571 cache_ptr = reloc_cache + idx;
3572 src = native_relocs + idx;
3573 bfd_swap_reloc_in(abfd, src, &dst);
3574
3575 RELOC_PROCESSING(cache_ptr, &dst, symbols, abfd, asect);
3576 #else
3577 struct internal_reloc dst;
3578 asymbol *ptr;
3579 struct external_reloc *src;
3580
3581 cache_ptr = reloc_cache + idx;
3582 src = native_relocs + idx;
3583
3584 bfd_swap_reloc_in(abfd, src, &dst);
3585
3586
3587 cache_ptr->address = dst.r_vaddr;
3588
3589 if (dst.r_symndx != -1)
3590 {
3591 /* @@ Should never be greater than count of symbols! */
3592 if (dst.r_symndx >= obj_conv_table_size (abfd))
3593 abort ();
3594 cache_ptr->sym_ptr_ptr = symbols + obj_convert(abfd)[dst.r_symndx];
3595 ptr = *(cache_ptr->sym_ptr_ptr);
3596 }
3597 else
3598 {
3599 cache_ptr->sym_ptr_ptr= bfd_abs_section.symbol_ptr_ptr;
3600 ptr = 0;
3601 }
3602
3603 /*
3604 The symbols definitions that we have read in have been
3605 relocated as if their sections started at 0. But the offsets
3606 refering to the symbols in the raw data have not been
3607 modified, so we have to have a negative addend to compensate.
3608
3609 Note that symbols which used to be common must be left alone */
3610
3611 /* Calculate any reloc addend by looking at the symbol */
3612 CALC_ADDEND(abfd, ptr, dst, cache_ptr);
3613
3614 cache_ptr->address -= asect->vma;
3615 /* !! cache_ptr->section = (asection *) NULL;*/
3616
3617 /* Fill in the cache_ptr->howto field from dst.r_type */
3618 RTYPE2HOWTO(cache_ptr, &dst);
3619 #endif
3620
3621 }
3622
3623 asect->relocation = reloc_cache;
3624 return true;
3625 }
3626
3627
3628 /* This is stupid. This function should be a boolean predicate */
3629 static unsigned int
3630 DEFUN(coff_canonicalize_reloc, (abfd, section, relptr, symbols),
3631 bfd *abfd AND
3632 sec_ptr section AND
3633 arelent **relptr AND
3634 asymbol **symbols)
3635 {
3636 arelent *tblptr = section->relocation;
3637 unsigned int count = 0;
3638
3639
3640 if (section->flags & SEC_CONSTRUCTOR)
3641 {
3642 /* this section has relocs made up by us, they are not in the
3643 file, so take them out of their chain and place them into
3644 the data area provided */
3645 arelent_chain *chain = section->constructor_chain;
3646 for (count = 0; count < section->reloc_count; count ++)
3647 {
3648 *relptr ++ = &chain->relent;
3649 chain = chain->next;
3650 }
3651
3652 }
3653 else
3654 {
3655 coff_slurp_reloc_table(abfd, section, symbols);
3656
3657
3658 tblptr = section->relocation;
3659 if (!tblptr)
3660 return 0;
3661
3662 for (; count++ < section->reloc_count;)
3663 *relptr++ = tblptr++;
3664
3665
3666 }
3667 *relptr = 0;
3668 return section->reloc_count;
3669 }
3670
3671 #ifndef NO_COFF_SYMBOLS
3672
3673 /*
3674 provided a BFD, a section and an offset into the section, calculate and
3675 return the name of the source file and the line nearest to the wanted
3676 location.
3677 */
3678
3679 static boolean
3680 DEFUN(coff_find_nearest_line,(abfd,
3681 section,
3682 ignore_symbols,
3683 offset,
3684 filename_ptr,
3685 functionname_ptr,
3686 line_ptr),
3687 bfd *abfd AND
3688 asection *section AND
3689 asymbol **ignore_symbols AND
3690 bfd_vma offset AND
3691 CONST char **filename_ptr AND
3692 CONST char **functionname_ptr AND
3693 unsigned int *line_ptr)
3694 {
3695 static bfd *cache_abfd;
3696 static asection *cache_section;
3697 static bfd_vma cache_offset;
3698 static unsigned int cache_i;
3699 static alent *cache_l;
3700
3701 unsigned int i = 0;
3702 coff_data_type *cof = coff_data(abfd);
3703 /* Run through the raw syments if available */
3704 combined_entry_type *p;
3705 alent *l;
3706 unsigned int line_base = 0;
3707
3708
3709 *filename_ptr = 0;
3710 *functionname_ptr = 0;
3711 *line_ptr = 0;
3712
3713 /* Don't try and find line numbers in a non coff file */
3714 if (abfd->xvec->flavour != bfd_target_coff_flavour)
3715 return false;
3716
3717 if (cof == NULL)
3718 return false;
3719
3720 p = cof->raw_syments;
3721
3722 for (i = 0; i < cof->raw_syment_count; i++) {
3723 if (p->u.syment.n_sclass == C_FILE) {
3724 /* File name has been moved into symbol */
3725 *filename_ptr = (char *) p->u.syment._n._n_n._n_offset;
3726 break;
3727 }
3728 p += 1 + p->u.syment.n_numaux;
3729 }
3730 /* Now wander though the raw linenumbers of the section */
3731 /*
3732 If this is the same BFD as we were previously called with and this is
3733 the same section, and the offset we want is further down then we can
3734 prime the lookup loop
3735 */
3736 if (abfd == cache_abfd &&
3737 section == cache_section &&
3738 offset >= cache_offset) {
3739 i = cache_i;
3740 l = cache_l;
3741 }
3742 else {
3743 i = 0;
3744 l = section->lineno;
3745 }
3746
3747 for (; i < section->lineno_count; i++) {
3748 if (l->line_number == 0) {
3749 /* Get the symbol this line number points at */
3750 coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym);
3751 *functionname_ptr = coff->symbol.name;
3752 if (coff->native) {
3753 combined_entry_type *s = coff->native;
3754 s = s + 1 + s->u.syment.n_numaux;
3755 /*
3756 S should now point to the .bf of the function
3757 */
3758 if (s->u.syment.n_numaux) {
3759 /*
3760 The linenumber is stored in the auxent
3761 */
3762 union internal_auxent *a = &((s + 1)->u.auxent);
3763 line_base = a->x_sym.x_misc.x_lnsz.x_lnno;
3764 }
3765 }
3766 }
3767 else {
3768 if (l->u.offset > offset)
3769 break;
3770 *line_ptr = l->line_number + line_base + 1;
3771 }
3772 l++;
3773 }
3774
3775 cache_abfd = abfd;
3776 cache_section = section;
3777 cache_offset = offset;
3778 cache_i = i;
3779 cache_l = l;
3780
3781 return true;
3782 }
3783
3784 #ifdef GNU960
3785 file_ptr
3786 coff_sym_filepos(abfd)
3787 bfd *abfd;
3788 {
3789 return obj_sym_filepos(abfd);
3790 }
3791 #endif
3792
3793 #endif /* NO_COFF_SYMBOLS */
3794
3795
3796 static int
3797 DEFUN(coff_sizeof_headers,(abfd, reloc),
3798 bfd *abfd AND
3799 boolean reloc)
3800 {
3801 size_t size;
3802
3803 if (reloc == false) {
3804 size = FILHSZ + AOUTSZ;
3805 }
3806 else {
3807 size = FILHSZ;
3808 }
3809
3810 size += abfd->section_count * SCNHSZ;
3811 return size;
3812 }
3813
3814 static bfd_vma
3815 DEFUN(get_value,(reloc, seclet),
3816 arelent *reloc AND
3817 bfd_seclet_type *seclet)
3818 {
3819 bfd_vma value;
3820 asymbol *symbol = *(reloc->sym_ptr_ptr);
3821 /* A symbol holds a pointer to a section, and an offset from the
3822 base of the section. To relocate, we find where the section will
3823 live in the output and add that in */
3824
3825 if (symbol->section == &bfd_und_section)
3826 {
3827 /* Ouch, this is an undefined symbol.. */
3828 bfd_error_vector.undefined_symbol(reloc, seclet);
3829 value = symbol->value;
3830 }
3831 else
3832 {
3833 value = symbol->value +
3834 symbol->section->output_offset +
3835 symbol->section->output_section->vma;
3836 }
3837
3838
3839 /* Add the value contained in the relocation */
3840 value += (short)((reloc->addend) & 0xffff);
3841
3842 return value;
3843 }
3844
3845 static void
3846 DEFUN(perform_slip,(s, slip, input_section, value),
3847 asymbol **s AND
3848 unsigned int slip AND
3849 asection *input_section AND
3850 bfd_vma value)
3851 {
3852
3853 /* Find all symbols past this point, and make them know
3854 what's happened */
3855 while (*s)
3856 {
3857 asymbol *p = *s;
3858 if (p->section == input_section)
3859 {
3860 /* This was pointing into this section, so mangle it */
3861 if (p->value > value)
3862 {
3863 p->value -= slip;
3864 }
3865 }
3866 s++;
3867
3868 }
3869 }
3870 static int
3871 DEFUN(movb1,(input_section, symbols, r, shrink),
3872 asection *input_section AND
3873 asymbol **symbols AND
3874 arelent *r AND
3875 unsigned int shrink)
3876 {
3877 bfd_vma value = get_value(r,0);
3878
3879 if (value >= 0xff00)
3880 {
3881
3882 /* Change the reloc type from 16bit, possible 8 to 8bit
3883 possible 16 */
3884 r->howto = r->howto + 1;
3885 /* The place to relc moves back by one */
3886 r->address -=1;
3887
3888 /* This will be two bytes smaller in the long run */
3889 shrink +=2 ;
3890 perform_slip(symbols, 2, input_section, r->address - shrink +1);
3891
3892
3893 }
3894 return shrink;
3895 }
3896
3897 static int
3898 DEFUN(jmp1,(input_section, symbols, r, shrink),
3899 asection *input_section AND
3900 asymbol **symbols AND
3901 arelent *r AND
3902 unsigned int shrink)
3903 {
3904
3905
3906 bfd_vma value = get_value(r, 0);
3907
3908 bfd_vma dot = input_section->output_section->vma +
3909 input_section->output_offset + r->address;
3910 bfd_vma gap;
3911
3912 /* See if the address we're looking at within 127 bytes of where
3913 we are, if so then we can use a small branch rather than the
3914 jump we were going to */
3915
3916 gap = value - (dot - shrink);
3917
3918
3919 if (-120 < (long)gap && (long)gap < 120 )
3920 {
3921
3922 /* Change the reloc type from 16bit, possible 8 to 8bit
3923 possible 16 */
3924 r->howto = r->howto + 1;
3925 /* The place to relc moves back by one */
3926 r->address -=1;
3927
3928 /* This will be two bytes smaller in the long run */
3929 shrink +=2 ;
3930 perform_slip(symbols, 2, input_section, r->address-shrink +1);
3931
3932
3933 }
3934 return shrink;
3935 }
3936
3937 static boolean
3938 DEFUN(bfd_coff_relax_section,(abfd, i, symbols),
3939 bfd *abfd AND
3940 asection *i AND
3941 asymbol **symbols)
3942 {
3943
3944 /* Get enough memory to hold the stuff */
3945 bfd *input_bfd = i->owner;
3946 asection *input_section = i;
3947 int shrink = 0 ;
3948 boolean new = false;
3949
3950 bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
3951 input_section);
3952 arelent **reloc_vector = (arelent **)bfd_xmalloc(reloc_size);
3953
3954 /* Get the relocs and think about them */
3955 if (bfd_canonicalize_reloc(input_bfd,
3956 input_section,
3957 reloc_vector,
3958 symbols))
3959 {
3960 arelent **parent;
3961 for (parent = reloc_vector; *parent; parent++)
3962 {
3963 arelent *r = *parent;
3964 switch (r->howto->type) {
3965 case R_MOVB2:
3966 case R_JMP2:
3967
3968 shrink+=2;
3969 break;
3970
3971 case R_MOVB1:
3972 shrink = movb1(input_section, symbols, r, shrink);
3973 new = true;
3974
3975 break;
3976 case R_JMP1:
3977 shrink = jmp1(input_section, symbols, r, shrink);
3978 new = true;
3979
3980 break;
3981 }
3982 }
3983
3984 }
3985 input_section->_cooked_size -= shrink;
3986 free((char *)reloc_vector);
3987 return new;
3988 }
3989
3990 static bfd_byte *
3991 DEFUN(bfd_coff_get_relocated_section_contents,(in_abfd, seclet, data),
3992 bfd *in_abfd AND
3993 bfd_seclet_type *seclet AND
3994 bfd_byte *data)
3995
3996 {
3997 /* Get enough memory to hold the stuff */
3998 bfd *input_bfd = seclet->u.indirect.section->owner;
3999 asection *input_section = seclet->u.indirect.section;
4000 bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
4001 input_section);
4002 arelent **reloc_vector = (arelent **)bfd_xmalloc(reloc_size);
4003
4004 /* read in the section */
4005 bfd_get_section_contents(input_bfd,
4006 input_section,
4007 data,
4008 0,
4009 input_section->_raw_size);
4010
4011
4012 if (bfd_canonicalize_reloc(input_bfd,
4013 input_section,
4014 reloc_vector,
4015 seclet->u.indirect.symbols) )
4016 {
4017 arelent **parent = reloc_vector;
4018 arelent *reloc ;
4019
4020
4021
4022 unsigned int dst_address = 0;
4023 unsigned int src_address = 0;
4024 unsigned int run;
4025 unsigned int idx;
4026
4027 /* Find how long a run we can do */
4028 while (dst_address < seclet->size)
4029 {
4030
4031 reloc = *parent;
4032 if (reloc)
4033 {
4034 /* Note that the relaxing didn't tie up the addresses in the
4035 relocation, so we use the original address to work out the
4036 run of non-relocated data */
4037 run = reloc->address - src_address;
4038 parent++;
4039
4040 }
4041 else
4042 {
4043 run = seclet->size - dst_address;
4044 }
4045 /* Copy the bytes */
4046 for (idx = 0; idx < run; idx++)
4047 {
4048 data[dst_address++] = data[src_address++];
4049 }
4050
4051 /* Now do the relocation */
4052
4053 if (reloc)
4054 {
4055 switch (reloc->howto->type)
4056 {
4057 case R_JMP2:
4058 /* Speciial relaxed type */
4059 {
4060 bfd_vma dot = seclet->offset + dst_address + seclet->u.indirect.section->output_section->vma;
4061 int gap = get_value(reloc,seclet)-dot-1;
4062 if ((gap & ~0xff ) != 0 &&((gap & 0xff00)!= 0xff00)) abort();
4063
4064 bfd_put_8(in_abfd,gap, data+dst_address);
4065
4066 switch (data[dst_address-1])
4067 {
4068
4069 case 0x5e:
4070 /* jsr -> bsr */
4071 bfd_put_8(in_abfd, 0x55, data+dst_address-1);
4072 break;
4073 case 0x5a:
4074 /* jmp ->bra */
4075 bfd_put_8(in_abfd, 0x40, data+dst_address-1);
4076 break;
4077
4078 default:
4079 abort();
4080
4081 }
4082
4083
4084
4085
4086 dst_address++;
4087 src_address+=3;
4088
4089 break;
4090 }
4091
4092
4093 case R_MOVB2:
4094 /* Special relaxed type, there will be a gap between where we
4095 get stuff from and where we put stuff to now
4096
4097 for a mov.b @aa:16 -> mov.b @aa:8
4098 opcode 0x6a 0x0y offset
4099 -> 0x2y off
4100 */
4101 if (data[dst_address-1] != 0x6a)
4102 abort();
4103 switch (data[src_address] & 0xf0)
4104 {
4105 case 0x00:
4106 /* Src is memory */
4107 data[dst_address-1] = (data[src_address] & 0xf) | 0x20;
4108 break;
4109 case 0x80:
4110 /* Src is reg */
4111 data[dst_address-1] = (data[src_address] & 0xf) | 0x30;
4112 break;
4113 default:
4114 abort();
4115 }
4116
4117 /* the offset must fit ! after all, what was all the relaxing
4118 about ? */
4119
4120 bfd_put_8(in_abfd, get_value(reloc, seclet), data + dst_address);
4121
4122 /* Note the magic - src goes up by two bytes, but dst by only
4123 one */
4124 dst_address+=1;
4125 src_address+=3;
4126
4127 break;
4128 /* PCrel 8 bits */
4129 case R_PCRBYTE:
4130 {
4131 bfd_vma dot = seclet->offset + dst_address + seclet->u.indirect.section->output_section->vma;
4132 int gap = get_value(reloc,seclet)-dot;
4133 if (gap > 127 || gap < -128)
4134 {
4135 bfd_error_vector.reloc_value_truncated(reloc, seclet);
4136 }
4137
4138 bfd_put_8(in_abfd,gap, data+dst_address);
4139 dst_address++;
4140 src_address++;
4141
4142 break;
4143 }
4144
4145 case R_RELBYTE:
4146 {
4147 unsigned int gap =get_value(reloc,seclet);
4148 if (gap > 0xff && gap < ~0xff)
4149 {
4150 bfd_error_vector.reloc_value_truncated(reloc, seclet);
4151 }
4152
4153 bfd_put_8(in_abfd, gap, data+dst_address);
4154 dst_address+=1;
4155 src_address+=1;
4156
4157
4158 }
4159 break;
4160 case R_JMP1:
4161 /* A relword which would have like to have been a pcrel */
4162 case R_MOVB1:
4163 /* A relword which would like to have been modified but
4164 didn't make it */
4165 case R_RELWORD:
4166 bfd_put_16(in_abfd, get_value(reloc,seclet), data+dst_address);
4167 dst_address+=2;
4168 src_address+=2;
4169 break;
4170 #ifdef EXTRA_CASES
4171 EXTRA_CASES
4172 #else
4173
4174 default:
4175 abort();
4176 #endif
4177 }
4178 }
4179 }
4180 }
4181 free((char *)reloc_vector);
4182 return data;
4183
4184 }
4185
4186
4187 #define coff_core_file_failing_command _bfd_dummy_core_file_failing_command
4188 #define coff_core_file_failing_signal _bfd_dummy_core_file_failing_signal
4189 #define coff_core_file_matches_executable_p _bfd_dummy_core_file_matches_executable_p
4190 #define coff_slurp_armap bfd_slurp_coff_armap
4191 #define coff_slurp_extended_name_table _bfd_slurp_extended_name_table
4192 #define coff_truncate_arname bfd_dont_truncate_arname
4193 #define coff_openr_next_archived_file bfd_generic_openr_next_archived_file
4194 #define coff_generic_stat_arch_elt bfd_generic_stat_arch_elt
4195 #define coff_get_section_contents bfd_generic_get_section_contents
4196 #define coff_close_and_cleanup bfd_generic_close_and_cleanup
4197
4198 #define coff_bfd_debug_info_start bfd_void
4199 #define coff_bfd_debug_info_end bfd_void
4200 #define coff_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
4201 #define coff_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
4202 #define coff_bfd_relax_section bfd_generic_relax_section
4203
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