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.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
22 Most of this hacked by Steve Chamberlain,
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
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}.
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}.
55 Porting To A New Version of Coff
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.
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.
80 How The Coff Backend Works
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.
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".
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
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.
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.
156 Any linenumbers are read from the coff file too, and attached
157 to the symbols which own the functions the linenumbers belong to.
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.
168 When the symbols have come from a coff file then all the
169 debugging information is preserved.
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.
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.
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}.
193 o coff_mangle_symbols
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
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.
215 The hidden information for an asymbol is described in a
216 coff_ptr_struct, which is typedefed to a combined_entry_type
220 .typedef struct coff_ptr_struct
223 . {* Remembers the offset from the first symbol in the file for
224 . this symbol. Generated by coff_renumber_symbols. *}
225 .unsigned int offset;
227 . {* Should the tag field of this symbol be renumbered.
228 . Created by coff_pointerize_aux. *}
231 . {* Should the endidx field of this symbol be renumbered.
232 . Created by coff_pointerize_aux. *}
235 . {* The container for the symbol structure as read and translated
239 . union internal_auxent auxent;
240 . struct internal_syment syment;
242 .} combined_entry_type;
245 .{* Each canonical asymbol really looks like this: *}
247 .typedef struct coff_symbol_struct
249 . {* The actual symbol which the rest of BFD works with *}
252 . {* A pointer to the hidden information for this symbol *}
253 .combined_entry_type *native;
255 . {* A pointer to the linenumber information for this symbol *}
256 .struct lineno_cache_entry *lineno;
258 . {* Have the line numbers been relocated yet ? *}
259 .boolean done_lineno;
266 extern bfd_error_vector_type bfd_error_vector;
271 #define PUTWORD bfd_h_put_32
272 #define PUTHALF bfd_h_put_16
273 #define PUTBYTE bfd_h_put_8
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)
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)
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)
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)
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)
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)
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)
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)
301 #ifndef GET_SCN_SCNLEN
302 #define GET_SCN_SCNLEN(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_scnlen)
304 #ifndef GET_SCN_NRELOC
305 #define GET_SCN_NRELOC(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *)ext->x_scn.x_nreloc)
307 #ifndef GET_SCN_NLINNO
308 #define GET_SCN_NLINNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *)ext->x_scn.x_nlinno)
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)
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)
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)
319 #ifndef GET_LINENO_LNNO
320 #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) (ext->l_lnno));
322 #ifndef PUT_LINENO_LNNO
323 #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_16(abfd,val, (bfd_byte *) (ext->l_lnno));
327 /* void warning(); */
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().
336 DEFUN(sec_to_styp_flags, (sec_name, sec_flags),
337 CONST char * sec_name AND
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);
349 } else if (!strcmp(sec_name, _COMMENT)) {
350 return((long)STYP_INFO);
351 #endif /* _COMMENT */
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;
361 styp_flags = STYP_TEXT;
362 #endif /* STYP_LIT */
363 else if (sec_flags & SEC_LOAD) styp_flags = STYP_TEXT;
365 if (styp_flags == 0) styp_flags = STYP_BSS;
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().
377 DEFUN(styp_to_sec_flags, (styp_flags),
380 flagword sec_flags=0;
382 if ((styp_flags & STYP_TEXT) || (styp_flags & STYP_DATA))
383 sec_flags = (SEC_LOAD | SEC_ALLOC);
384 else if (styp_flags & STYP_BSS)
385 sec_flags = SEC_ALLOC;
387 #ifdef STYP_LIT /* A29k readonly text/data section type */
388 if ((styp_flags & STYP_LIT) == STYP_LIT)
389 sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY);
390 #endif /* STYP_LIT */
391 #ifdef STYP_OTHER_LOAD /* Other loaded sections */
392 if (styp_flags & STYP_OTHER_LOAD)
393 sec_flags = (SEC_LOAD | SEC_ALLOC);
394 #endif /* STYP_SDATA */
399 #define get_index(symbol) ((int) (symbol)->udata)
400 #define set_index(symbol, idx) ((symbol)->udata =(PTR) (idx))
402 /* **********************************************************************
403 Here are all the routines for swapping the structures seen in the
404 outside world into the internal forms.
409 DEFUN(bfd_swap_reloc_in,(abfd, reloc_src, reloc_dst),
412 struct internal_reloc *reloc_dst)
414 reloc_dst->r_vaddr = bfd_h_get_32(abfd, (bfd_byte *)reloc_src->r_vaddr);
415 reloc_dst->r_symndx = bfd_h_get_32(abfd, (bfd_byte *) reloc_src->r_symndx);
418 reloc_dst->r_type = bfd_h_get_8(abfd, reloc_src->r_type);
419 reloc_dst->r_size = bfd_h_get_8(abfd, reloc_src->r_size);
421 reloc_dst->r_type = bfd_h_get_16(abfd, (bfd_byte *) reloc_src->r_type);
424 #ifdef SWAP_IN_RELOC_OFFSET
425 reloc_dst->r_offset = SWAP_IN_RELOC_OFFSET(abfd,
426 (bfd_byte *) reloc_src->r_offset);
432 DEFUN(coff_swap_reloc_out,(abfd, src, dst),
437 struct internal_reloc *reloc_src = (struct internal_reloc *)src;
438 struct external_reloc *reloc_dst = (struct external_reloc *)dst;
439 bfd_h_put_32(abfd, reloc_src->r_vaddr, (bfd_byte *) reloc_dst->r_vaddr);
440 bfd_h_put_32(abfd, reloc_src->r_symndx, (bfd_byte *) reloc_dst->r_symndx);
441 bfd_h_put_16(abfd, reloc_src->r_type, (bfd_byte *)
444 #ifdef SWAP_OUT_RELOC_OFFSET
445 SWAP_OUT_RELOC_OFFSET(abfd,
447 (bfd_byte *) reloc_dst->r_offset);
449 #ifdef SWAP_OUT_RELOC_EXTRA
450 SWAP_OUT_RELOC_EXTRA(abfd,reloc_src, reloc_dst);
453 return sizeof(struct external_reloc);
457 DEFUN(bfd_swap_filehdr_in,(abfd, filehdr_src, filehdr_dst),
459 FILHDR *filehdr_src AND
460 struct internal_filehdr *filehdr_dst)
462 filehdr_dst->f_magic = bfd_h_get_16(abfd, (bfd_byte *) filehdr_src->f_magic);
463 filehdr_dst->f_nscns = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_nscns);
464 filehdr_dst->f_timdat = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_timdat);
465 filehdr_dst->f_symptr = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_symptr);
466 filehdr_dst->f_nsyms = bfd_h_get_32(abfd, (bfd_byte *)filehdr_src-> f_nsyms);
467 filehdr_dst->f_opthdr = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_opthdr);
468 filehdr_dst->f_flags = bfd_h_get_16(abfd, (bfd_byte *)filehdr_src-> f_flags);
472 DEFUN(coff_swap_filehdr_out,(abfd, in, out),
477 struct internal_filehdr *filehdr_in = (struct internal_filehdr *)in;
478 FILHDR *filehdr_out = (FILHDR *)out;
479 bfd_h_put_16(abfd, filehdr_in->f_magic, (bfd_byte *) filehdr_out->f_magic);
480 bfd_h_put_16(abfd, filehdr_in->f_nscns, (bfd_byte *) filehdr_out->f_nscns);
481 bfd_h_put_32(abfd, filehdr_in->f_timdat, (bfd_byte *) filehdr_out->f_timdat);
482 bfd_h_put_32(abfd, filehdr_in->f_symptr, (bfd_byte *) filehdr_out->f_symptr);
483 bfd_h_put_32(abfd, filehdr_in->f_nsyms, (bfd_byte *) filehdr_out->f_nsyms);
484 bfd_h_put_16(abfd, filehdr_in->f_opthdr, (bfd_byte *) filehdr_out->f_opthdr);
485 bfd_h_put_16(abfd, filehdr_in->f_flags, (bfd_byte *) filehdr_out->f_flags);
486 return sizeof(FILHDR);
490 #ifndef NO_COFF_SYMBOLS
493 DEFUN(coff_swap_sym_in,(abfd, ext1, in1),
498 SYMENT *ext = (SYMENT *)ext1;
499 struct internal_syment *in = (struct internal_syment *)in1;
501 if( ext->e.e_name[0] == 0) {
502 in->_n._n_n._n_zeroes = 0;
503 in->_n._n_n._n_offset = bfd_h_get_32(abfd, (bfd_byte *) ext->e.e.e_offset);
506 #if SYMNMLEN != E_SYMNMLEN
507 -> Error, we need to cope with truncating or extending SYMNMLEN!;
509 memcpy(in->_n._n_name, ext->e.e_name, SYMNMLEN);
512 in->n_value = bfd_h_get_32(abfd, (bfd_byte *) ext->e_value);
513 in->n_scnum = bfd_h_get_16(abfd, (bfd_byte *) ext->e_scnum);
514 if (sizeof(ext->e_type) == 2){
515 in->n_type = bfd_h_get_16(abfd, (bfd_byte *) ext->e_type);
518 in->n_type = bfd_h_get_32(abfd, (bfd_byte *) ext->e_type);
520 in->n_sclass = bfd_h_get_8(abfd, ext->e_sclass);
521 in->n_numaux = bfd_h_get_8(abfd, ext->e_numaux);
525 DEFUN(coff_swap_sym_out,(abfd, inp, extp),
530 struct internal_syment *in = (struct internal_syment *)inp;
531 SYMENT *ext =(SYMENT *)extp;
532 if(in->_n._n_name[0] == 0) {
533 bfd_h_put_32(abfd, 0, (bfd_byte *) ext->e.e.e_zeroes);
534 bfd_h_put_32(abfd, in->_n._n_n._n_offset, (bfd_byte *) ext->e.e.e_offset);
537 #if SYMNMLEN != E_SYMNMLEN
538 -> Error, we need to cope with truncating or extending SYMNMLEN!;
540 memcpy(ext->e.e_name, in->_n._n_name, SYMNMLEN);
543 bfd_h_put_32(abfd, in->n_value , (bfd_byte *) ext->e_value);
544 bfd_h_put_16(abfd, in->n_scnum , (bfd_byte *) ext->e_scnum);
545 if (sizeof(ext->e_type) == 2)
547 bfd_h_put_16(abfd, in->n_type , (bfd_byte *) ext->e_type);
551 bfd_h_put_32(abfd, in->n_type , (bfd_byte *) ext->e_type);
553 bfd_h_put_8(abfd, in->n_sclass , ext->e_sclass);
554 bfd_h_put_8(abfd, in->n_numaux , ext->e_numaux);
555 return sizeof(SYMENT);
559 DEFUN(coff_swap_aux_in,(abfd, ext1, type, class, in1),
566 AUXENT *ext = (AUXENT *)ext1;
567 union internal_auxent *in = (union internal_auxent *)in1;
571 if (ext->x_file.x_fname[0] == 0) {
572 in->x_file.x_n.x_zeroes = 0;
573 in->x_file.x_n.x_offset =
574 bfd_h_get_32(abfd, (bfd_byte *) ext->x_file.x_n.x_offset);
576 #if FILNMLEN != E_FILNMLEN
577 -> Error, we need to cope with truncating or extending FILNMLEN!;
579 memcpy (in->x_file.x_fname, ext->x_file.x_fname, FILNMLEN);
584 /* RS/6000 "csect" auxents */
588 in->x_csect.x_scnlen = bfd_h_get_32 (abfd, (bfd_byte *) ext->x_csect.x_scnlen);
589 in->x_csect.x_parmhash = bfd_h_get_32 (abfd, (bfd_byte *) ext->x_csect.x_parmhash);
590 in->x_csect.x_snhash = bfd_h_get_16 (abfd, (bfd_byte *) ext->x_csect.x_snhash);
591 /* We don't have to hack bitfields in x_smtyp because it's defined by
592 shifts-and-ands, which are equivalent on all byte orders. */
593 in->x_csect.x_smtyp = bfd_h_get_8 (abfd, (bfd_byte *) ext->x_csect.x_smtyp);
594 in->x_csect.x_smclas = bfd_h_get_8 (abfd, (bfd_byte *) ext->x_csect.x_smclas);
595 in->x_csect.x_stab = bfd_h_get_32 (abfd, (bfd_byte *) ext->x_csect.x_stab);
596 in->x_csect.x_snstab = bfd_h_get_16 (abfd, (bfd_byte *) ext->x_csect.x_snstab);
605 if (type == T_NULL) {
606 in->x_scn.x_scnlen = GET_SCN_SCNLEN(abfd, ext);
607 in->x_scn.x_nreloc = GET_SCN_NRELOC(abfd, ext);
608 in->x_scn.x_nlinno = GET_SCN_NLINNO(abfd, ext);
612 in->x_sym.x_tagndx.l = bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_tagndx);
614 in->x_sym.x_tvndx = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_tvndx);
617 if (ISARY(type) || class == C_BLOCK) {
618 #if DIMNUM != E_DIMNUM
619 -> Error, we need to cope with truncating or extending DIMNUM!;
621 in->x_sym.x_fcnary.x_ary.x_dimen[0] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[0]);
622 in->x_sym.x_fcnary.x_ary.x_dimen[1] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[1]);
623 in->x_sym.x_fcnary.x_ary.x_dimen[2] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[2]);
624 in->x_sym.x_fcnary.x_ary.x_dimen[3] = bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_ary.x_dimen[3]);
627 in->x_sym.x_fcnary.x_fcn.x_lnnoptr = GET_FCN_LNNOPTR(abfd, ext);
628 in->x_sym.x_fcnary.x_fcn.x_endndx.l = GET_FCN_ENDNDX(abfd, ext);
631 in->x_sym.x_misc.x_fsize = bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_misc.x_fsize);
634 in->x_sym.x_misc.x_lnsz.x_lnno = GET_LNSZ_LNNO(abfd, ext);
635 in->x_sym.x_misc.x_lnsz.x_size = GET_LNSZ_SIZE(abfd, ext);
641 DEFUN(coff_swap_aux_out,(abfd, inp, type, class, extp),
648 union internal_auxent *in = (union internal_auxent *)inp;
649 AUXENT *ext = (AUXENT *)extp;
652 if (in->x_file.x_fname[0] == 0) {
653 PUTWORD(abfd, 0, (bfd_byte *) ext->x_file.x_n.x_zeroes);
655 in->x_file.x_n.x_offset,
656 (bfd_byte *) ext->x_file.x_n.x_offset);
659 #if FILNMLEN != E_FILNMLEN
660 -> Error, we need to cope with truncating or extending FILNMLEN!;
662 memcpy (ext->x_file.x_fname, in->x_file.x_fname, FILNMLEN);
668 /* RS/6000 "csect" auxents */
671 PUTWORD (abfd, in->x_csect.x_scnlen, ext->x_csect.x_scnlen);
672 PUTWORD (abfd, in->x_csect.x_parmhash, ext->x_csect.x_parmhash);
673 PUTHALF (abfd, in->x_csect.x_snhash, ext->x_csect.x_snhash);
674 /* We don't have to hack bitfields in x_smtyp because it's defined by
675 shifts-and-ands, which are equivalent on all byte orders. */
676 PUTBYTE (abfd, in->x_csect.x_smtyp, ext->x_csect.x_smtyp);
677 PUTBYTE (abfd, in->x_csect.x_smclas, ext->x_csect.x_smclas);
678 PUTWORD (abfd, in->x_csect.x_stab, ext->x_csect.x_stab);
679 PUTHALF (abfd, in->x_csect.x_snstab, ext->x_csect.x_snstab);
688 if (type == T_NULL) {
689 PUT_SCN_SCNLEN(abfd, in->x_scn.x_scnlen, ext);
690 PUT_SCN_NRELOC(abfd, in->x_scn.x_nreloc, ext);
691 PUT_SCN_NLINNO(abfd, in->x_scn.x_nlinno, ext);
695 PUTWORD(abfd, in->x_sym.x_tagndx.l, (bfd_byte *) ext->x_sym.x_tagndx);
697 bfd_h_put_16(abfd, in->x_sym.x_tvndx , (bfd_byte *) ext->x_sym.x_tvndx);
701 PUTWORD(abfd, in->x_sym.x_misc.x_fsize, (bfd_byte *) ext->x_sym.x_misc.x_fsize);
702 PUT_FCN_LNNOPTR(abfd, in->x_sym.x_fcnary.x_fcn.x_lnnoptr, ext);
703 PUT_FCN_ENDNDX(abfd, in->x_sym.x_fcnary.x_fcn.x_endndx.l, ext);
707 if (ISARY(type) || class == C_BLOCK) {
708 #if DIMNUM != E_DIMNUM
709 -> Error, we need to cope with truncating or extending DIMNUM!;
711 bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[0], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[0]);
712 bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[1], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[1]);
713 bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[2], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[2]);
714 bfd_h_put_16(abfd, in->x_sym.x_fcnary.x_ary.x_dimen[3], (bfd_byte *)ext->x_sym.x_fcnary.x_ary.x_dimen[3]);
717 PUT_LNSZ_LNNO(abfd, in->x_sym.x_misc.x_lnsz.x_lnno, ext);
718 PUT_LNSZ_SIZE(abfd, in->x_sym.x_misc.x_lnsz.x_size, ext);
720 PUT_FCN_LNNOPTR(abfd, in->x_sym.x_fcnary.x_fcn.x_lnnoptr, ext);
721 PUT_FCN_ENDNDX(abfd, in->x_sym.x_fcnary.x_fcn.x_endndx.l, ext);
726 return sizeof(AUXENT);
729 #endif /* NO_COFF_SYMBOLS */
731 #ifndef NO_COFF_LINENOS
734 DEFUN(coff_swap_lineno_in,(abfd, ext1, in1),
739 LINENO *ext = (LINENO *)ext1;
740 struct internal_lineno *in = (struct internal_lineno *)in1;
742 in->l_addr.l_symndx = bfd_h_get_32(abfd, (bfd_byte *) ext->l_addr.l_symndx);
743 in->l_lnno = GET_LINENO_LNNO(abfd, ext);
747 DEFUN(coff_swap_lineno_out,(abfd, inp, outp),
752 struct internal_lineno *in = (struct internal_lineno *)inp;
753 struct external_lineno *ext = (struct external_lineno *)outp;
754 PUTWORD(abfd, in->l_addr.l_symndx, (bfd_byte *)
755 ext->l_addr.l_symndx);
757 PUT_LINENO_LNNO (abfd, in->l_lnno, ext);
758 return sizeof(struct external_lineno);
761 #endif /* NO_COFF_LINENOS */
765 DEFUN(bfd_swap_aouthdr_in,(abfd, aouthdr_ext1, aouthdr_int1),
770 AOUTHDR *aouthdr_ext = (AOUTHDR *) aouthdr_ext1;
771 struct internal_aouthdr *aouthdr_int = (struct internal_aouthdr *)aouthdr_int1;
773 aouthdr_int->magic = bfd_h_get_16(abfd, (bfd_byte *) aouthdr_ext->magic);
774 aouthdr_int->vstamp = bfd_h_get_16(abfd, (bfd_byte *) aouthdr_ext->vstamp);
775 aouthdr_int->tsize = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->tsize);
776 aouthdr_int->dsize = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->dsize);
777 aouthdr_int->bsize = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->bsize);
778 aouthdr_int->entry = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->entry);
779 aouthdr_int->text_start = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->text_start);
780 aouthdr_int->data_start = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->data_start);
782 aouthdr_int->tagentries = bfd_h_get_32(abfd, (bfd_byte *) aouthdr_ext->tagentries);
786 aouthdr_int->o_toc = bfd_h_get_32(abfd, aouthdr_ext->o_toc);
787 aouthdr_int->o_snentry = bfd_h_get_16(abfd, aouthdr_ext->o_snentry);
788 aouthdr_int->o_sntext = bfd_h_get_16(abfd, aouthdr_ext->o_sntext);
789 aouthdr_int->o_sndata = bfd_h_get_16(abfd, aouthdr_ext->o_sndata);
790 aouthdr_int->o_sntoc = bfd_h_get_16(abfd, aouthdr_ext->o_sntoc);
791 aouthdr_int->o_snloader = bfd_h_get_16(abfd, aouthdr_ext->o_snloader);
792 aouthdr_int->o_snbss = bfd_h_get_16(abfd, aouthdr_ext->o_snbss);
793 aouthdr_int->o_algntext = bfd_h_get_16(abfd, aouthdr_ext->o_algntext);
794 aouthdr_int->o_algndata = bfd_h_get_16(abfd, aouthdr_ext->o_algndata);
795 aouthdr_int->o_modtype = bfd_h_get_16(abfd, aouthdr_ext->o_modtype);
796 aouthdr_int->o_maxstack = bfd_h_get_32(abfd, aouthdr_ext->o_maxstack);
801 DEFUN(coff_swap_aouthdr_out,(abfd, in, out),
806 struct internal_aouthdr *aouthdr_in = (struct internal_aouthdr *)in;
807 AOUTHDR *aouthdr_out = (AOUTHDR *)out;
808 bfd_h_put_16(abfd, aouthdr_in->magic, (bfd_byte *) aouthdr_out->magic);
809 bfd_h_put_16(abfd, aouthdr_in->vstamp, (bfd_byte *) aouthdr_out->vstamp);
810 bfd_h_put_32(abfd, aouthdr_in->tsize, (bfd_byte *) aouthdr_out->tsize);
811 bfd_h_put_32(abfd, aouthdr_in->dsize, (bfd_byte *) aouthdr_out->dsize);
812 bfd_h_put_32(abfd, aouthdr_in->bsize, (bfd_byte *) aouthdr_out->bsize);
813 bfd_h_put_32(abfd, aouthdr_in->entry, (bfd_byte *) aouthdr_out->entry);
814 bfd_h_put_32(abfd, aouthdr_in->text_start,
815 (bfd_byte *) aouthdr_out->text_start);
816 bfd_h_put_32(abfd, aouthdr_in->data_start, (bfd_byte *) aouthdr_out->data_start);
818 bfd_h_put_32(abfd, aouthdr_in->tagentries, (bfd_byte *) aouthdr_out->tagentries);
820 return sizeof(AOUTHDR);
824 DEFUN(coff_swap_scnhdr_in,(abfd, scnhdr_ext, scnhdr_int),
826 SCNHDR *scnhdr_ext AND
827 struct internal_scnhdr *scnhdr_int)
829 memcpy(scnhdr_int->s_name, scnhdr_ext->s_name, sizeof(scnhdr_int->s_name));
830 scnhdr_int->s_vaddr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_vaddr);
831 scnhdr_int->s_paddr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_paddr);
832 scnhdr_int->s_size = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_size);
834 scnhdr_int->s_scnptr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_scnptr);
835 scnhdr_int->s_relptr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_relptr);
836 scnhdr_int->s_lnnoptr = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_lnnoptr);
837 scnhdr_int->s_flags = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_flags);
839 scnhdr_int->s_nreloc = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_nreloc);
840 scnhdr_int->s_nlnno = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_nlnno);
842 scnhdr_int->s_nreloc = bfd_h_get_16(abfd, (bfd_byte *) scnhdr_ext->s_nreloc);
843 scnhdr_int->s_nlnno = bfd_h_get_16(abfd, (bfd_byte *) scnhdr_ext->s_nlnno);
846 scnhdr_int->s_align = bfd_h_get_32(abfd, (bfd_byte *) scnhdr_ext->s_align);
851 DEFUN(coff_swap_scnhdr_out,(abfd, in, out),
856 struct internal_scnhdr *scnhdr_int = (struct internal_scnhdr *)in;
857 SCNHDR *scnhdr_ext = (SCNHDR *)out;
858 memcpy(scnhdr_ext->s_name, scnhdr_int->s_name, sizeof(scnhdr_int->s_name));
859 PUTWORD(abfd, scnhdr_int->s_vaddr, (bfd_byte *) scnhdr_ext->s_vaddr);
860 PUTWORD(abfd, scnhdr_int->s_paddr, (bfd_byte *) scnhdr_ext->s_paddr);
861 PUTWORD(abfd, scnhdr_int->s_size, (bfd_byte *) scnhdr_ext->s_size);
862 PUTWORD(abfd, scnhdr_int->s_scnptr, (bfd_byte *) scnhdr_ext->s_scnptr);
863 PUTWORD(abfd, scnhdr_int->s_relptr, (bfd_byte *) scnhdr_ext->s_relptr);
864 PUTWORD(abfd, scnhdr_int->s_lnnoptr, (bfd_byte *) scnhdr_ext->s_lnnoptr);
865 PUTWORD(abfd, scnhdr_int->s_flags, (bfd_byte *) scnhdr_ext->s_flags);
867 PUTWORD(abfd, scnhdr_int->s_nlnno, (bfd_byte *) scnhdr_ext->s_nlnno);
868 PUTWORD(abfd, scnhdr_int->s_nreloc, (bfd_byte *) scnhdr_ext->s_nreloc);
870 PUTHALF(abfd, scnhdr_int->s_nlnno, (bfd_byte *) scnhdr_ext->s_nlnno);
871 PUTHALF(abfd, scnhdr_int->s_nreloc, (bfd_byte *) scnhdr_ext->s_nreloc);
875 PUTWORD(abfd, scnhdr_int->s_align, (bfd_byte *) scnhdr_ext->s_align);
877 return sizeof(SCNHDR);
882 initialize a section structure with information peculiar to this
883 particular implementation of coff
887 DEFUN(coff_new_section_hook,(abfd_ignore, section),
891 section->alignment_power = abfd_ignore->xvec->align_power_min;
895 static asection bfd_debug_section =
901 DEFUN(make_abs_section,(abfd),
909 /* Take a section header read from a coff file (in HOST byte order),
910 and make a BFD "section" out of it. */
912 DEFUN(make_a_section_from_file,(abfd, hdr, target_index),
914 struct internal_scnhdr *hdr AND
915 unsigned int target_index)
917 asection *return_section;
920 /* Assorted wastage to null-terminate the name, thanks AT&T! */
921 name = bfd_alloc(abfd, sizeof (hdr->s_name)+1);
923 bfd_error = no_memory;
926 strncpy(name, (char *) &hdr->s_name[0], sizeof (hdr->s_name));
927 name[sizeof (hdr->s_name)] = 0;
929 return_section = bfd_make_section(abfd, name);
930 if (return_section == NULL)
933 /* s_paddr is presumed to be = to s_vaddr */
935 return_section->vma = hdr->s_vaddr;
936 return_section->_raw_size = hdr->s_size;
937 return_section->filepos = hdr->s_scnptr;
938 return_section->rel_filepos = hdr->s_relptr;
939 return_section->reloc_count = hdr->s_nreloc;
942 /* FIXME, use a temp var rather than alignment_power */
943 return_section->alignment_power = hdr->s_align;
946 for (i = 0; i < 32; i++) {
947 if ((1 << i) >= (int) (return_section->alignment_power)) {
948 return_section->alignment_power = i;
955 return_section->line_filepos = hdr->s_lnnoptr;
957 return_section->linesize = hdr->s_nlnno * sizeof (struct lineno);
960 return_section->lineno_count = hdr->s_nlnno;
961 return_section->userdata = NULL;
962 return_section->next = (asection *) NULL;
963 return_section->flags = styp_to_sec_flags(hdr->s_flags);
965 return_section->target_index = target_index;
967 if (hdr->s_nreloc != 0)
968 return_section->flags |= SEC_RELOC;
969 /* FIXME: should this check 'hdr->s_size > 0' */
970 if (hdr->s_scnptr != 0)
971 return_section->flags |= SEC_HAS_CONTENTS;
975 DEFUN(coff_mkobject,(abfd),
978 abfd->tdata.coff_obj_data = (struct coff_tdata *)bfd_zalloc (abfd,sizeof(coff_data_type));
979 if (abfd->tdata.coff_obj_data == 0){
980 bfd_error = no_memory;
983 coff_data(abfd)->relocbase = 0;
984 /* make_abs_section(abfd);*/
990 DEFUN(coff_real_object_p,(abfd, nscns, internal_f, internal_a),
993 struct internal_filehdr *internal_f AND
994 struct internal_aouthdr *internal_a)
996 coff_data_type *coff;
997 enum bfd_architecture arch;
999 size_t readsize; /* length of file_info */
1000 SCNHDR *external_sections;
1002 /* Build a play area */
1003 if (coff_mkobject(abfd) != true)
1006 coff = coff_data(abfd);
1009 external_sections = (SCNHDR *)bfd_alloc(abfd, readsize = (nscns * SCNHSZ));
1011 if (bfd_read((PTR)external_sections, 1, readsize, abfd) != readsize) {
1016 /* Now copy data as required; construct all asections etc */
1017 coff->symbol_index_slew = 0;
1019 coff->raw_syment_count = 0;
1020 coff->raw_linenos = 0;
1021 coff->raw_syments = 0;
1022 coff->sym_filepos =0;
1023 coff->flags = internal_f->f_flags;
1026 for (i = 0; i < nscns; i++) {
1027 struct internal_scnhdr tmp;
1028 coff_swap_scnhdr_in(abfd, external_sections + i, &tmp);
1029 make_a_section_from_file(abfd,&tmp, i+1);
1033 /* make_abs_section(abfd);*/
1035 /* Determine the machine architecture and type. */
1037 switch (internal_f->f_magic) {
1040 arch = bfd_arch_i386;
1045 #ifdef A29K_MAGIC_BIG
1046 case A29K_MAGIC_BIG:
1047 case A29K_MAGIC_LITTLE:
1048 arch = bfd_arch_a29k;
1057 arch = bfd_arch_mips;
1065 arch = bfd_arch_m68k;
1073 arch = bfd_arch_m88k;
1081 arch = bfd_arch_i960;
1082 switch (F_I960TYPE & internal_f->f_flags)
1086 machine = bfd_mach_i960_core;
1089 machine = bfd_mach_i960_kb_sb;
1092 machine = bfd_mach_i960_mc;
1095 machine = bfd_mach_i960_xa;
1098 machine = bfd_mach_i960_ca;
1101 machine = bfd_mach_i960_ka_sa;
1112 arch = bfd_arch_rs6000;
1119 arch = bfd_arch_h8300;
1124 default: /* Unreadable input file type */
1125 arch = bfd_arch_obscure;
1129 bfd_default_set_arch_mach(abfd, arch, machine);
1130 if (!(internal_f->f_flags & F_RELFLG))
1131 abfd->flags |= HAS_RELOC;
1132 if ((internal_f->f_flags & F_EXEC))
1133 abfd->flags |= EXEC_P;
1134 if (!(internal_f->f_flags & F_LNNO))
1135 abfd->flags |= HAS_LINENO;
1136 if (!(internal_f->f_flags & F_LSYMS))
1137 abfd->flags |= HAS_LOCALS;
1140 bfd_get_symcount(abfd) = internal_f->f_nsyms;
1141 if (internal_f->f_nsyms)
1142 abfd->flags |= HAS_SYMS;
1144 coff->sym_filepos = internal_f->f_symptr;
1146 /* These members communicate important constants about the symbol table
1147 to GDB's symbol-reading code. These `constants' unfortunately vary
1148 from coff implementation to implementation... */
1149 #ifndef NO_COFF_SYMBOLS
1150 coff->local_n_btmask = N_BTMASK;
1151 coff->local_n_btshft = N_BTSHFT;
1152 coff->local_n_tmask = N_TMASK;
1153 coff->local_n_tshift = N_TSHIFT;
1154 coff->local_symesz = SYMESZ;
1155 coff->local_auxesz = AUXESZ;
1156 coff->local_linesz = LINESZ;
1159 coff->symbols = (coff_symbol_type *) NULL;
1160 bfd_get_start_address(abfd) = internal_f->f_opthdr ? internal_a->entry : 0;
1164 bfd_release(abfd, coff);
1165 return (bfd_target *)NULL;
1169 DEFUN(coff_object_p,(abfd),
1175 struct internal_filehdr internal_f;
1176 struct internal_aouthdr internal_a;
1178 bfd_error = system_call_error;
1180 /* figure out how much to read */
1181 if (bfd_read((PTR) &filehdr, 1, FILHSZ, abfd) != FILHSZ)
1184 bfd_swap_filehdr_in(abfd, &filehdr, &internal_f);
1186 if (BADMAG(internal_f)) {
1187 bfd_error = wrong_format;
1190 nscns =internal_f.f_nscns;
1192 if (internal_f.f_opthdr) {
1193 if (bfd_read((PTR) &opthdr, 1,AOUTSZ, abfd) != AOUTSZ) {
1196 bfd_swap_aouthdr_in(abfd, (char *)&opthdr, (char *)&internal_a);
1199 /* Seek past the opt hdr stuff */
1200 bfd_seek(abfd, internal_f.f_opthdr + FILHSZ, SEEK_SET);
1202 /* if the optional header is NULL or not the correct size then
1203 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1204 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1205 optional header is of a different size.
1207 But the mips keeps extra stuff in it's opthdr, so dont check
1211 #if defined(M88) || defined(I960)
1212 if (internal_f.f_opthdr != 0 && AOUTSZ != internal_f.f_opthdr)
1213 return (bfd_target *)NULL;
1216 return coff_real_object_p(abfd, nscns, &internal_f, &internal_a);
1221 #ifndef NO_COFF_LINENOS
1224 DEFUN(coff_count_linenumbers,(abfd),
1227 unsigned int limit = bfd_get_symcount(abfd);
1231 asection *s = abfd->sections->output_section;
1233 BFD_ASSERT(s->lineno_count == 0);
1239 for (p = abfd->outsymbols, i = 0; i < limit; i++, p++) {
1240 asymbol *q_maybe = *p;
1241 if (q_maybe->the_bfd->xvec->flavour == bfd_target_coff_flavour) {
1242 coff_symbol_type *q = coffsymbol(q_maybe);
1245 This symbol has a linenumber, increment the owning
1246 section's linenumber count
1248 alent *l = q->lineno;
1249 q->symbol.section->output_section->lineno_count++;
1251 while (l->line_number) {
1252 q->symbol.section->output_section->lineno_count++;
1260 #endif /* NO_COFF_LINENOS */
1262 #ifndef NO_COFF_SYMBOLS
1265 Takes a bfd and a symbol, returns a pointer to the coff specific area
1266 of the symbol if there is one.
1268 static coff_symbol_type *
1269 DEFUN(coff_symbol_from,(ignore_abfd, symbol),
1270 bfd *ignore_abfd AND
1273 if (symbol->the_bfd->xvec->flavour != bfd_target_coff_flavour)
1274 return (coff_symbol_type *)NULL;
1276 if (symbol->the_bfd->tdata.coff_obj_data == (coff_data_type*)NULL)
1277 return (coff_symbol_type *)NULL;
1279 return (coff_symbol_type *) symbol;
1285 DEFUN(fixup_symbol_value,(coff_symbol_ptr, syment),
1286 coff_symbol_type *coff_symbol_ptr AND
1287 struct internal_syment *syment)
1290 /* Normalize the symbol flags */
1291 if (coff_symbol_ptr->symbol.section == &bfd_com_section) {
1292 /* a common symbol is undefined with a value */
1293 syment->n_scnum = N_UNDEF;
1294 syment->n_value = coff_symbol_ptr->symbol.value;
1296 else if (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING) {
1297 syment->n_value = coff_symbol_ptr->symbol.value;
1299 else if (coff_symbol_ptr->symbol.section == & bfd_und_section) {
1300 syment->n_scnum = N_UNDEF;
1301 syment->n_value = 0;
1304 if (coff_symbol_ptr->symbol.section) {
1306 coff_symbol_ptr->symbol.section->output_section->target_index;
1309 coff_symbol_ptr->symbol.value +
1310 coff_symbol_ptr->symbol.section->output_offset +
1311 coff_symbol_ptr->symbol.section->output_section->vma;
1316 syment->n_scnum = N_ABS;
1317 syment->n_value = coff_symbol_ptr->symbol.value;
1322 /* run through all the symbols in the symbol table and work out what
1323 their indexes into the symbol table will be when output
1325 Coff requires that each C_FILE symbol points to the next one in the
1326 chain, and that the last one points to the first external symbol. We
1331 DEFUN(coff_renumber_symbols,(bfd_ptr),
1334 unsigned int symbol_count = bfd_get_symcount(bfd_ptr);
1335 asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols;
1336 unsigned int native_index = 0;
1337 struct internal_syment *last_file = (struct internal_syment *)NULL;
1338 unsigned int symbol_index;
1339 for (symbol_index = 0; symbol_index < symbol_count; symbol_index++)
1341 coff_symbol_type *coff_symbol_ptr = coff_symbol_from(bfd_ptr, symbol_ptr_ptr[symbol_index]);
1342 if (coff_symbol_ptr && coff_symbol_ptr->native) {
1343 combined_entry_type *s = coff_symbol_ptr->native;
1346 if (s->u.syment.n_sclass == C_FILE)
1348 if (last_file != (struct internal_syment *)NULL) {
1349 last_file->n_value = native_index;
1351 last_file = &(s->u.syment);
1355 /* Modify the symbol values according to their section and
1358 fixup_symbol_value(coff_symbol_ptr, &(s->u.syment));
1360 for (i = 0; i < s->u.syment.n_numaux + 1; i++) {
1361 s[i].offset = native_index ++;
1372 Run thorough the symbol table again, and fix it so that all pointers to
1373 entries are changed to the entries' index in the output symbol table.
1377 DEFUN(coff_mangle_symbols,(bfd_ptr),
1380 unsigned int symbol_count = bfd_get_symcount(bfd_ptr);
1381 asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols;
1382 unsigned int symbol_index;
1384 for (symbol_index = 0; symbol_index < symbol_count; symbol_index++)
1386 coff_symbol_type *coff_symbol_ptr =
1387 coff_symbol_from(bfd_ptr, symbol_ptr_ptr[symbol_index]);
1389 if (coff_symbol_ptr && coff_symbol_ptr->native) {
1391 combined_entry_type *s = coff_symbol_ptr->native;
1393 for (i = 0; i < s->u.syment.n_numaux ; i++) {
1394 combined_entry_type *a = s + i + 1;
1396 a->u.auxent.x_sym.x_tagndx.l =
1397 a->u.auxent.x_sym.x_tagndx.p->offset;
1401 a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l =
1402 a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p->offset;
1412 static int string_size;
1414 DEFUN(coff_fix_symbol_name,(ignore_abfd, symbol, native),
1415 bfd *ignore_abfd AND
1417 combined_entry_type *native)
1419 unsigned int name_length;
1420 union internal_auxent *auxent;
1421 char * name = ( char *)(symbol->name);
1423 if (name == (char *) NULL) {
1424 /* coff symbols always have names, so we'll make one up */
1425 symbol->name = "strange";
1426 name = (char *)symbol->name;
1428 name_length = strlen(name);
1430 if (native->u.syment.n_sclass == C_FILE) {
1431 strncpy(native->u.syment._n._n_name, ".file", SYMNMLEN);
1432 auxent = &(native+1)->u.auxent;
1434 #ifdef COFF_LONG_FILENAMES
1435 if (name_length <= FILNMLEN) {
1436 strncpy(auxent->x_file.x_fname, name, FILNMLEN);
1439 auxent->x_file.x_n.x_offset = string_size + 4;
1440 auxent->x_file.x_n.x_zeroes = 0;
1441 string_size += name_length + 1;
1444 strncpy(auxent->x_file.x_fname, name, FILNMLEN);
1445 if (name_length > FILNMLEN) {
1446 name[FILNMLEN] = '\0';
1451 { /* NOT A C_FILE SYMBOL */
1452 if (name_length <= SYMNMLEN) {
1453 /* This name will fit into the symbol neatly */
1454 strncpy(native->u.syment._n._n_name, symbol->name, SYMNMLEN);
1457 native->u.syment._n._n_n._n_offset = string_size + 4;
1458 native->u.syment._n._n_n._n_zeroes = 0;
1459 string_size += name_length + 1;
1467 DEFUN(coff_write_symbol,(abfd, symbol, native, written),
1470 combined_entry_type *native AND
1471 unsigned int written)
1473 unsigned int numaux = native->u.syment.n_numaux;
1474 int type = native->u.syment.n_type;
1475 int class = native->u.syment.n_sclass;
1478 if (symbol->section == &bfd_abs_section)
1480 native->u.syment.n_scnum = N_ABS;
1482 else if (symbol->section == &bfd_debug_section)
1484 native->u.syment.n_scnum = N_DEBUG;
1486 else if (symbol->section == &bfd_und_section)
1488 native->u.syment.n_scnum = N_UNDEF;
1492 native->u.syment.n_scnum =
1493 symbol->section->output_section->target_index;
1497 coff_fix_symbol_name(abfd, symbol, native);
1499 coff_swap_sym_out(abfd, &native->u.syment, &buf);
1500 bfd_write((PTR)& buf, 1, SYMESZ, abfd);
1501 for (j = 0; j < native->u.syment.n_numaux; j++)
1504 bzero((PTR)&buf, AUXESZ);
1505 coff_swap_aux_out(abfd,
1506 &( (native + j + 1)->u.auxent), type, class, &buf1);
1507 bfd_write((PTR) (&buf1), 1, AUXESZ, abfd);
1510 Reuse somewhere in the symbol to keep the index
1512 set_index(symbol, written);
1513 return written + 1 + numaux;
1518 DEFUN(coff_write_alien_symbol,(abfd, symbol, written),
1521 unsigned int written)
1524 This symbol has been created by the loader, or come from a non
1525 coff format. It has no native element to inherit, make our
1528 combined_entry_type *native;
1529 combined_entry_type dummy;
1531 native->u.syment.n_type = T_NULL;
1533 native->u.syment.n_flags = 0;
1535 if (symbol->section == &bfd_und_section)
1537 native->u.syment.n_scnum = N_UNDEF;
1538 native->u.syment.n_value = symbol->value;
1540 else if (symbol->section == &bfd_com_section)
1542 native->u.syment.n_scnum = N_UNDEF;
1543 native->u.syment.n_value = symbol->value;
1547 else if (symbol->flags & BSF_DEBUGGING) {
1549 remove name so it doesn't take up any space
1554 native->u.syment.n_scnum = symbol->section->output_section->target_index;
1555 native->u.syment.n_value = symbol->value +
1556 symbol->section->output_section->vma +
1557 symbol->section->output_offset;
1559 /* Copy the any flags from the the file hdr into the symbol */
1561 coff_symbol_type *c = coff_symbol_from(abfd, symbol);
1562 if (c != (coff_symbol_type *)NULL) {
1563 native->u.syment.n_flags = c->symbol.the_bfd->flags;
1570 native->u.syment.pad1[0] = 0;
1571 native->u.syment.pad1[0] = 0;
1574 native->u.syment.n_type = 0;
1575 if (symbol->flags & BSF_LOCAL)
1576 native->u.syment.n_sclass = C_STAT;
1578 native->u.syment.n_sclass = C_EXT;
1579 native->u.syment.n_numaux = 0;
1581 return coff_write_symbol(abfd, symbol, native, written);
1585 DEFUN(coff_write_native_symbol,(abfd, symbol, written),
1587 coff_symbol_type *symbol AND
1588 unsigned int written)
1591 Does this symbol have an ascociated line number - if so then
1592 make it remember this symbol index. Also tag the auxent of
1593 this symbol to point to the right place in the lineno table
1595 combined_entry_type *native = symbol->native;
1597 alent *lineno = symbol->lineno;
1599 if (lineno && !symbol->done_lineno) {
1600 unsigned int count = 0;
1601 lineno[count].u.offset = written;
1602 if (native->u.syment.n_numaux) {
1603 union internal_auxent *a = &((native+1)->u.auxent);
1605 a->x_sym.x_fcnary.x_fcn.x_lnnoptr =
1606 symbol->symbol.section->output_section->moving_line_filepos;
1609 And count and relocate all other linenumbers
1613 while (lineno[count].line_number) {
1616 I've been told this, but still need proof:
1617 > The second bug is also in `bfd/coffcode.h'. This bug causes the linker to screw
1618 > up the pc-relocations for all the line numbers in COFF code. This bug isn't
1619 > only specific to A29K implementations, but affects all systems using COFF
1620 > format binaries. Note that in COFF object files, the line number core offsets
1621 > output by the assembler are relative to the start of each procedure, not
1622 > to the start of the .text section. This patch relocates the line numbers
1623 > relative to the `native->u.syment.n_value' instead of the section virtual
1626 lineno[count].u.offset += native->u.syment.n_value;
1629 lineno[count].u.offset +=
1630 symbol->symbol.section->output_section->vma +
1631 symbol->symbol.section->output_offset;
1635 symbol->done_lineno = true;
1637 symbol->symbol.section->output_section->moving_line_filepos +=
1640 return coff_write_symbol(abfd, &( symbol->symbol), native,written);
1644 DEFUN(coff_write_symbols,(abfd),
1648 unsigned int limit = bfd_get_symcount(abfd);
1649 unsigned int written = 0;
1656 /* Seek to the right place */
1657 bfd_seek(abfd, obj_sym_filepos(abfd), SEEK_SET);
1659 /* Output all the symbols we have */
1662 for (p = abfd->outsymbols, i = 0; i < limit; i++, p++)
1664 asymbol *symbol = *p;
1665 coff_symbol_type *c_symbol = coff_symbol_from(abfd, symbol);
1667 if (c_symbol == (coff_symbol_type *) NULL ||
1668 c_symbol->native == (combined_entry_type *)NULL)
1670 written = coff_write_alien_symbol(abfd, symbol, written);
1674 written = coff_write_native_symbol(abfd, c_symbol, written);
1679 bfd_get_symcount(abfd) = written;
1681 /* Now write out strings */
1683 if (string_size != 0)
1685 unsigned int size = string_size + 4;
1688 bfd_h_put_32(abfd, size, buffer);
1689 bfd_write((PTR) buffer, 1, sizeof(buffer), abfd);
1690 for (p = abfd->outsymbols, i = 0;
1695 size_t name_length = strlen(q->name);
1697 coff_symbol_type* c_symbol = coff_symbol_from(abfd, q);
1698 maxlen = ((c_symbol != NULL && c_symbol->native != NULL) &&
1699 (c_symbol->native->u.syment.n_sclass == C_FILE)) ?
1700 FILNMLEN : SYMNMLEN;
1702 if (name_length > maxlen) {
1703 bfd_write((PTR) (q->name), 1, name_length + 1, abfd);
1708 /* We would normally not write anything here, but we'll write
1709 out 4 so that any stupid coff reader which tries to read
1710 the string table even when there isn't one won't croak.
1713 uint32e_type size = 4;
1715 bfd_write((PTR)&size, 1, sizeof(size), abfd);
1724 To write relocations, all the back end does is step though the
1725 canonical relocation table, and create an
1726 @code{internal_reloc}. The symbol index to use is removed from
1727 the @code{offset} field in the symbol table supplied, the
1728 address comes directly from the sum of the section base
1729 address and the relocation offset and the type is dug directly
1730 from the howto field. Then the @code{internal_reloc} is
1731 swapped into the shape of an @code{external_reloc} and written
1737 DEFUN(coff_write_relocs,(abfd),
1741 for (s = abfd->sections; s != (asection *) NULL; s = s->next) {
1743 struct external_reloc dst;
1745 arelent **p = s->orelocation;
1746 bfd_seek(abfd, s->rel_filepos, SEEK_SET);
1747 for (i = 0; i < s->reloc_count; i++) {
1748 struct internal_reloc n;
1750 memset((PTR)&n, 0, sizeof(n));
1751 n.r_vaddr = q->address + s->vma;
1752 if (q->sym_ptr_ptr) {
1753 n.r_symndx = get_index((*(q->sym_ptr_ptr)));
1756 /* Work out reloc type from what is required */
1757 SELECT_RELOC(n.r_type, q->howto);
1759 n.r_type = q->howto->type;
1761 coff_swap_reloc_out(abfd, &n, &dst);
1762 bfd_write((PTR) &n, 1, RELSZ, abfd);
1766 #endif /* NO_COFF_SYMBOLS */
1768 #ifndef NO_COFF_LINENOS
1771 DEFUN(coff_write_linenumbers,(abfd),
1775 for (s = abfd->sections; s != (asection *) NULL; s = s->next) {
1776 if (s->lineno_count) {
1777 asymbol **q = abfd->outsymbols;
1778 bfd_seek(abfd, s->line_filepos, SEEK_SET);
1779 /* Find all the linenumbers in this section */
1782 alent *l = BFD_SEND(p->the_bfd, _get_lineno, (p->the_bfd, p));
1784 /* Found a linenumber entry, output */
1785 struct internal_lineno out;
1787 memset( (PTR)&out, 0, sizeof(out));
1789 out.l_addr.l_symndx = l->u.offset;
1790 coff_swap_lineno_out(abfd, &out, &buff);
1791 bfd_write((PTR) &buff, 1, LINESZ, abfd);
1793 while (l->line_number) {
1794 out.l_lnno = l->line_number;
1795 out.l_addr.l_symndx = l->u.offset;
1796 coff_swap_lineno_out(abfd, &out, &buff);
1797 bfd_write((PTR) &buff, 1, LINESZ, abfd);
1808 DEFUN(coff_get_lineno,(ignore_abfd, symbol),
1809 bfd *ignore_abfd AND
1812 return coffsymbol(symbol)->lineno;
1815 #endif /* NO_COFF_LINENOS */
1818 coff_make_empty_symbol(abfd)
1821 coff_symbol_type *new = (coff_symbol_type *) bfd_alloc(abfd, sizeof(coff_symbol_type));
1823 bfd_error = no_memory;
1827 new->lineno = (alent *) NULL;
1828 new->done_lineno = false;
1829 new->symbol.the_bfd = abfd;
1830 return &new->symbol;
1833 #ifndef NO_COFF_SYMBOLS
1836 DEFUN(coff_print_symbol,(ignore_abfd, filep, symbol, how),
1837 bfd *ignore_abfd AND
1840 bfd_print_symbol_type how)
1842 FILE *file = (FILE *)filep;
1844 case bfd_print_symbol_name:
1845 fprintf(file, "%s", symbol->name);
1847 case bfd_print_symbol_more:
1848 fprintf(file, "coff %lx %lx", (unsigned long) coffsymbol(symbol)->native,
1849 (unsigned long) coffsymbol(symbol)->lineno);
1851 case bfd_print_symbol_nm:
1854 CONST char *section_name = symbol->section->name;
1855 bfd_print_symbol_vandf((PTR) file, symbol);
1858 fprintf(file, " %-5s %s %s %s",
1860 coffsymbol(symbol)->native ? "n" : "g",
1861 coffsymbol(symbol)->lineno ? "l" : " ",
1867 case bfd_print_symbol_all:
1868 /* Print out the symbols in a reasonable way */
1870 CONST char *section_name = symbol->section->name;
1873 if (coffsymbol(symbol)->native)
1876 combined_entry_type *combined = coffsymbol(symbol)->native;
1877 combined_entry_type *root = obj_raw_syments(ignore_abfd);
1879 fprintf(file,"[%3d]",
1883 fprintf(file, "(sc %2d)(fl%4x)(ty%3x)(sc%3d) nx(%d) %08x %s",
1884 combined->u.syment.n_scnum,
1885 combined->u.syment.n_flags,
1886 combined->u.syment.n_type,
1887 combined->u.syment.n_sclass,
1888 combined->u.syment.n_numaux,
1889 combined->u.syment.n_value,
1892 for (aux = 0; aux < combined->u.syment.n_numaux; aux++)
1895 switch (combined->u.syment.n_sclass) {
1897 fprintf(file, "File ");
1900 fprintf(file, "AUX lnno %x size %x tagndx %x",
1901 combined[aux+1].u.auxent.x_sym.x_misc.x_lnsz.x_lnno,
1902 combined[aux+1].u.auxent.x_sym.x_misc.x_lnsz.x_size,
1903 combined[aux+1].u.auxent.x_sym.x_tagndx.l);
1911 struct lineno_cache_entry *l = coffsymbol(symbol)->lineno;
1914 printf("\n%s :", l->u.sym->name);
1916 while (l->line_number)
1918 printf("\n%4d : %x",
1932 bfd_print_symbol_vandf((PTR) file, symbol);
1933 fprintf(file, " %-5s %s %s %s",
1935 coffsymbol(symbol)->native ? "n" : "g",
1936 coffsymbol(symbol)->lineno ? "l" : " ",
1945 #endif /* NO_COFF_SYMBOLS */
1947 /* Set flags and magic number of a coff file from architecture and machine
1948 type. Result is true if we can represent the arch&type, false if not. */
1951 DEFUN(coff_set_flags,(abfd, magicp, flagsp),
1953 unsigned *magicp AND
1954 unsigned short *flagsp)
1956 switch (bfd_get_arch(abfd)) {
1964 *magicp = I960ROMAGIC;
1966 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
1967 I960RWMAGIC); FIXME???
1969 switch (bfd_get_mach(abfd)) {
1970 case bfd_mach_i960_core:
1973 case bfd_mach_i960_kb_sb:
1976 case bfd_mach_i960_mc:
1979 case bfd_mach_i960_xa:
1982 case bfd_mach_i960_ca:
1985 case bfd_mach_i960_ka_sa:
1998 *magicp = MIPS_MAGIC_2;
2004 *magicp = I386MAGIC;
2009 *magicp = MC68MAGIC;
2015 *magicp = MC88OMAGIC;
2020 case bfd_arch_h8300:
2021 *magicp = H8300MAGIC;
2025 #ifdef A29K_MAGIC_BIG
2027 if (abfd->xvec->byteorder_big_p)
2028 *magicp = A29K_MAGIC_BIG;
2030 *magicp = A29K_MAGIC_LITTLE;
2036 case bfd_arch_rs6000:
2037 *magicp = U802TOCMAGIC;
2041 default: /* Unknown architecture */
2042 /* return false; -- fall through to "return false" below, to avoid
2043 "statement never reached" errors on the one below. */
2052 DEFUN(coff_set_arch_mach,(abfd, arch, machine),
2054 enum bfd_architecture arch AND
2055 unsigned long machine)
2058 unsigned short dummy2;
2059 bfd_default_set_arch_mach(abfd, arch, machine);
2061 if (arch != bfd_arch_unknown &&
2062 coff_set_flags(abfd, &dummy1, &dummy2) != true)
2063 return false; /* We can't represent this type */
2064 return true; /* We're easy ... */
2068 /* Calculate the file position for each section. */
2071 DEFUN(coff_compute_section_file_positions,(abfd),
2075 asection *previous = (asection *)NULL;
2076 file_ptr sofar = FILHSZ;
2078 if (bfd_get_start_address(abfd))
2080 /* A start address may have been added to the original file. In this
2081 case it will need an optional header to record it. */
2082 abfd->flags |= EXEC_P;
2085 if (abfd->flags & EXEC_P)
2088 sofar += abfd->section_count * SCNHSZ;
2089 for (current = abfd->sections;
2090 current != (asection *)NULL;
2091 current = current->next) {
2093 /* Only deal with sections which have contents */
2094 if (!(current->flags & SEC_HAS_CONTENTS))
2097 /* Align the sections in the file to the same boundary on
2098 which they are aligned in virtual memory. I960 doesn't
2099 do this (FIXME) so we can stay in sync with Intel. 960
2100 doesn't yet page from files... */
2103 /* make sure this section is aligned on the right boundary - by
2104 padding the previous section up if necessary */
2107 sofar = BFD_ALIGN(sofar, 1 << current->alignment_power);
2108 if (previous != (asection *)NULL) {
2109 previous->_raw_size += sofar - old_sofar;
2114 /* FIXME, in demand paged files, the low order bits of the file
2115 offset must match the low order bits of the virtual address.
2116 "Low order" is apparently implementation defined. Add code
2117 here to round sofar up to match the virtual address. */
2119 current->filepos = sofar;
2121 /* make sure that this section is of the right size too */
2122 old_sofar = sofar += current->_raw_size;
2123 sofar = BFD_ALIGN(sofar, 1 << current->alignment_power);
2124 current->_raw_size += sofar - old_sofar ;
2128 obj_relocbase(abfd) = sofar;
2137 DEFUN(coff_write_object_contents,(abfd),
2143 boolean hasrelocs = false;
2144 boolean haslinno = false;
2145 file_ptr reloc_base;
2146 file_ptr lineno_base;
2150 unsigned long reloc_size = 0;
2151 unsigned long lnno_size = 0;
2152 asection *text_sec = NULL;
2153 asection *data_sec = NULL;
2154 asection *bss_sec = NULL;
2156 struct internal_filehdr internal_f;
2157 struct internal_aouthdr internal_a;
2160 bfd_error = system_call_error;
2161 /* Number the output sections, starting from one on the first section
2162 with a name which doesn't start with a * */
2164 for (current = abfd->sections; current != (asection *)NULL;
2165 current = current->next)
2167 current->target_index = count;
2174 if(abfd->output_has_begun == false) {
2175 coff_compute_section_file_positions(abfd);
2178 if (abfd->sections != (asection *)NULL) {
2179 scn_base = abfd->sections->filepos;
2184 if (bfd_seek(abfd, scn_base, SEEK_SET) != 0)
2186 reloc_base = obj_relocbase(abfd);
2188 /* Make a pass through the symbol table to count line number entries and
2189 put them into the correct asections */
2191 #ifndef NO_COFF_LINENOS
2192 coff_count_linenumbers(abfd);
2194 data_base = scn_base;
2196 /* Work out the size of the reloc and linno areas */
2198 for (current = abfd->sections; current != NULL; current =
2201 /* We give section headers to +ve indexes */
2202 if (current->target_index > 0)
2205 reloc_size += current->reloc_count * RELSZ;
2206 #ifndef NO_COFF_LINENOS
2207 lnno_size += current->lineno_count * LINESZ;
2209 data_base += SCNHSZ;
2214 lineno_base = reloc_base + reloc_size;
2215 sym_base = lineno_base + lnno_size;
2217 /* Indicate in each section->line_filepos its actual file address */
2218 for (current = abfd->sections; current != NULL; current =
2221 if (current->target_index > 0)
2224 if (current->lineno_count) {
2225 current->line_filepos = lineno_base;
2226 current->moving_line_filepos = lineno_base;
2227 #ifndef NO_COFF_LINENOS
2228 lineno_base += current->lineno_count * LINESZ;
2232 current->line_filepos = 0;
2234 if (current->reloc_count) {
2235 current->rel_filepos = reloc_base;
2236 reloc_base += current->reloc_count * RELSZ;
2239 current->rel_filepos = 0;
2246 /* Write section headers to the file. */
2247 internal_f.f_nscns = 0;
2249 (file_ptr) ((abfd->flags & EXEC_P) ?
2250 (FILHSZ + AOUTSZ) : FILHSZ),
2255 unsigned int pad = abfd->flags & D_PAGED ? data_base : 0;
2257 unsigned int pad = 0;
2259 for (current = abfd->sections;
2261 current = current->next) {
2262 struct internal_scnhdr section;
2263 if (current->target_index > 0)
2265 internal_f.f_nscns ++;
2266 strncpy(&(section.s_name[0]), current->name, 8);
2267 section.s_vaddr = current->vma + pad;
2268 section.s_paddr = current->vma + pad;
2269 section.s_size = current->_raw_size - pad;
2271 If this section has no size or is unloadable then the scnptr
2274 if (current->_raw_size - pad == 0 ||
2275 (current->flags & SEC_LOAD) == 0) {
2276 section.s_scnptr = 0;
2279 section.s_scnptr = current->filepos;
2281 section.s_relptr = current->rel_filepos;
2282 section.s_lnnoptr = current->line_filepos;
2283 section.s_nreloc = current->reloc_count;
2284 section.s_nlnno = current->lineno_count;
2285 if (current->reloc_count != 0)
2287 if (current->lineno_count != 0)
2290 section.s_flags = sec_to_styp_flags(current->name,current->flags);
2292 if (!strcmp(current->name, _TEXT)) {
2294 } else if (!strcmp(current->name, _DATA)) {
2296 } else if (!strcmp(current->name, _BSS)) {
2301 section.s_align = (current->alignment_power
2302 ? 1 << current->alignment_power
2309 coff_swap_scnhdr_out(abfd, §ion, &buff);
2310 bfd_write((PTR) (&buff), 1, SCNHSZ, abfd);
2320 /* OK, now set up the filehdr... */
2322 /* Don't include the internal abs section in the section count */
2325 We will NOT put a fucking timestamp in the header here. Every time you
2326 put it back, I will come in and take it out again. I'm sorry. This
2327 field does not belong here. We fill it with a 0 so it compares the
2331 Well, I like it, and now we have *customers* who have requested it,
2332 so I'm conditionally compiling it in.
2336 #ifndef NOCOFF_TIMESTAMP
2337 internal_f.f_timdat = time(0);
2339 internal_f.f_timdat = 0;
2342 if (bfd_get_symcount(abfd) != 0)
2343 internal_f.f_symptr = sym_base;
2345 internal_f.f_symptr = 0;
2347 internal_f.f_flags = 0;
2349 if (abfd->flags & EXEC_P)
2350 internal_f.f_opthdr = AOUTSZ;
2352 internal_f.f_opthdr = 0;
2355 internal_f.f_flags |= F_RELFLG;
2357 internal_f.f_flags |= F_LNNO;
2358 if (0 == bfd_get_symcount(abfd))
2359 internal_f.f_flags |= F_LSYMS;
2360 if (abfd->flags & EXEC_P)
2361 internal_f.f_flags |= F_EXEC;
2363 if (!abfd->xvec->byteorder_big_p)
2364 internal_f.f_flags |= F_AR32WR;
2366 internal_f.f_flags |= F_AR32W;
2369 FIXME, should do something about the other byte orders and
2373 /* Set up architecture-dependent stuff */
2375 { unsigned int magic = 0;
2376 unsigned short flags = 0;
2377 coff_set_flags(abfd, &magic, &flags);
2378 internal_f.f_magic = magic;
2379 internal_f.f_flags |= flags;
2380 /* ...and the "opt"hdr... */
2383 # ifdef ULTRA3 /* NYU's machine */
2384 /* FIXME: This is a bogus check. I really want to see if there
2385 * is a .shbss or a .shdata section, if so then set the magic
2386 * number to indicate a shared data executable.
2388 if (internal_f.f_nscns >= 7)
2389 internal_a.magic = SHMAGIC; /* Shared magic */
2391 # endif /* ULTRA3 */
2392 internal_a.magic = NMAGIC; /* Assume separate i/d */
2393 #define __A_MAGIC_SET__
2396 internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC);
2397 #define __A_MAGIC_SET__
2400 #define __A_MAGIC_SET__
2401 internal_a.magic = PAGEMAGICBCS;
2404 #if M68 || I386 || MIPS
2405 #define __A_MAGIC_SET__
2406 /* Never was anything here for the 68k */
2410 #define __A_MAGIC_SET__
2411 internal_a.magic = (abfd->flags & D_PAGED)? RS6K_AOUTHDR_ZMAGIC:
2412 (abfd->flags & WP_TEXT)? RS6K_AOUTHDR_NMAGIC:
2413 RS6K_AOUTHDR_OMAGIC;
2416 #ifndef __A_MAGIC_SET__
2417 # include "Your aouthdr magic number is not being set!"
2419 # undef __A_MAGIC_SET__
2422 /* Now should write relocs, strings, syms */
2423 obj_sym_filepos(abfd) = sym_base;
2425 #ifndef NO_COFF_SYMBOLS
2426 if (bfd_get_symcount(abfd) != 0) {
2427 coff_renumber_symbols(abfd);
2428 coff_mangle_symbols(abfd);
2429 coff_write_symbols(abfd);
2430 coff_write_linenumbers(abfd);
2431 coff_write_relocs(abfd);
2433 #endif /* NO_COFF_SYMBOLS */
2435 internal_a.tsize = bfd_get_section_size_before_reloc(text_sec);
2436 internal_a.text_start = internal_a.tsize ? text_sec->vma : 0;
2439 internal_a.dsize = bfd_get_section_size_before_reloc(data_sec);
2440 internal_a.data_start = internal_a.dsize ? data_sec->vma : 0;
2443 internal_a.bsize = bfd_get_section_size_before_reloc(bss_sec);
2446 internal_a.entry = bfd_get_start_address(abfd);
2447 internal_f.f_nsyms = bfd_get_symcount(abfd);
2449 /* now write them */
2450 if (bfd_seek(abfd, 0L, SEEK_SET) != 0)
2454 coff_swap_filehdr_out(abfd, (PTR)&internal_f, (PTR)&buff);
2455 bfd_write((PTR) &buff, 1, FILHSZ, abfd);
2457 if (abfd->flags & EXEC_P) {
2459 coff_swap_aouthdr_out(abfd, (PTR)&internal_a, (PTR)&buff);
2460 bfd_write((PTR) &buff, 1, AOUTSZ, abfd);
2465 #ifndef NO_COFF_SYMBOLS
2468 this function transforms the offsets into the symbol table into
2469 pointers to syments.
2474 DEFUN(coff_pointerize_aux,(ignore_abfd, table_base, type, class, auxent),
2475 bfd *ignore_abfd AND
2476 combined_entry_type *table_base AND
2479 combined_entry_type *auxent)
2481 /* Don't bother if this is a file or a section */
2482 if (class == C_STAT && type == T_NULL) return;
2483 if (class == C_FILE) return;
2485 /* Otherwise patch up */
2486 if (ISFCN(type) || ISTAG(class) || class == C_BLOCK) {
2487 auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = table_base +
2488 auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l;
2489 auxent->fix_end = 1;
2491 if (auxent->u.auxent.x_sym.x_tagndx.l != 0) {
2492 auxent->u.auxent.x_sym.x_tagndx.p =
2493 table_base + auxent->u.auxent.x_sym.x_tagndx.l;
2494 auxent->fix_tag = 1;
2498 #endif /* NO_COFF_SYMBOLS */
2501 DEFUN(coff_set_section_contents,(abfd, section, location, offset, count),
2506 bfd_size_type count)
2508 if (abfd->output_has_begun == false) /* set by bfd.c handler */
2509 coff_compute_section_file_positions(abfd);
2511 bfd_seek(abfd, (file_ptr) (section->filepos + offset), SEEK_SET);
2514 return (bfd_write(location, 1, count, abfd) == count) ? true : false;
2520 coff_close_and_cleanup(abfd)
2523 if (!bfd_read_p(abfd))
2524 switch (abfd->format) {
2526 if (!_bfd_write_archive_contents(abfd))
2530 if (!coff_write_object_contents(abfd))
2534 bfd_error = invalid_operation;
2538 /* We depend on bfd_close to free all the memory on the obstack. */
2539 /* FIXME if bfd_release is not using obstacks! */
2545 buy_and_read(abfd, where, seek_direction, size)
2551 PTR area = (PTR) bfd_alloc(abfd, size);
2553 bfd_error = no_memory;
2556 bfd_seek(abfd, where, seek_direction);
2557 if (bfd_read(area, 1, size, abfd) != size) {
2558 bfd_error = system_call_error;
2562 } /* buy_and_read() */
2565 #ifndef NO_COFF_SYMBOLS
2568 DEFUN(build_string_table,(abfd),
2571 char string_table_size_buffer[4];
2572 unsigned int string_table_size;
2575 /* At this point we should be "seek"'d to the end of the
2576 symbols === the symbol table size. */
2577 if (bfd_read((char *) string_table_size_buffer,
2578 sizeof(string_table_size_buffer),
2579 1, abfd) != sizeof(string_table_size)) {
2580 bfd_error = system_call_error;
2584 string_table_size = bfd_h_get_32(abfd, (bfd_byte *) string_table_size_buffer);
2586 if ((string_table = (PTR) bfd_alloc(abfd, string_table_size -= 4)) == NULL) {
2587 bfd_error = no_memory;
2589 } /* on mallocation error */
2590 if (bfd_read(string_table, string_table_size, 1, abfd) != string_table_size) {
2591 bfd_error = system_call_error;
2594 return string_table;
2597 /* Allocate space for the ".debug" section, and read it.
2598 We did not read the debug section until now, because
2599 we didn't want to go to the trouble until someone needed it. */
2602 DEFUN(build_debug_section,(abfd),
2605 char *debug_section;
2608 asection *sect = bfd_get_section_by_name (abfd, ".debug");
2611 bfd_error = no_debug_section;
2615 debug_section = (PTR) bfd_alloc (abfd,
2616 bfd_get_section_size_before_reloc (sect));
2617 if (debug_section == NULL) {
2618 bfd_error = no_memory;
2622 /* Seek to the beginning of the `.debug' section and read it.
2623 Save the current position first; it is needed by our caller.
2624 Then read debug section and reset the file pointer. */
2626 position = bfd_tell (abfd);
2627 bfd_seek (abfd, sect->filepos, SEEK_SET);
2628 if (bfd_read (debug_section,
2629 bfd_get_section_size_before_reloc (sect), 1, abfd)
2630 != bfd_get_section_size_before_reloc(sect)) {
2631 bfd_error = system_call_error;
2634 bfd_seek (abfd, position, SEEK_SET);
2635 return debug_section;
2639 /* Return a pointer to a malloc'd copy of 'name'. 'name' may not be
2640 \0-terminated, but will not exceed 'maxlen' characters. The copy *will*
2641 be \0-terminated. */
2643 DEFUN(copy_name,(abfd, name, maxlen),
2651 for (len = 0; len < maxlen; ++len) {
2652 if (name[len] == '\0') {
2657 if ((newname = (PTR) bfd_alloc(abfd, len+1)) == NULL) {
2658 bfd_error = no_memory;
2661 strncpy(newname, name, len);
2662 newname[len] = '\0';
2667 /* Read a symbol table into freshly bfd_allocated memory, swap it, and
2668 knit the symbol names into a normalized form. By normalized here I
2669 mean that all symbols have an n_offset pointer that points to a null-
2670 terminated string. */
2672 #ifndef SYMNAME_IN_DEBUG
2673 #define SYMNAME_IN_DEBUG(x) 0
2676 static combined_entry_type *
2677 DEFUN(get_normalized_symtab,(abfd),
2680 combined_entry_type *internal;
2681 combined_entry_type *internal_ptr;
2682 combined_entry_type *symbol_ptr;
2683 combined_entry_type *internal_end;
2687 char *string_table = NULL;
2688 char *debug_section = NULL;
2691 unsigned int raw_size;
2692 if (obj_raw_syments(abfd) != (combined_entry_type *)NULL) {
2693 return obj_raw_syments(abfd);
2695 if ((size = bfd_get_symcount(abfd) * sizeof(combined_entry_type)) == 0) {
2696 bfd_error = no_symbols;
2700 internal = (combined_entry_type *)bfd_alloc(abfd, size);
2701 internal_end = internal + bfd_get_symcount(abfd);
2703 raw_size = bfd_get_symcount(abfd) * SYMESZ;
2704 raw = (SYMENT *)bfd_alloc(abfd,raw_size);
2706 if (bfd_seek(abfd, obj_sym_filepos(abfd), SEEK_SET) == -1
2707 || bfd_read((PTR)raw, raw_size, 1, abfd) != raw_size) {
2708 bfd_error = system_call_error;
2711 /* mark the end of the symbols */
2712 raw_end = raw + bfd_get_symcount(abfd);
2714 FIXME SOMEDAY. A string table size of zero is very weird, but
2715 probably possible. If one shows up, it will probably kill us.
2718 /* Swap all the raw entries */
2719 for (raw_src = raw, internal_ptr = internal;
2721 raw_src++, internal_ptr++) {
2724 coff_swap_sym_in(abfd, (PTR)raw_src, (PTR)&internal_ptr->u.syment);
2725 internal_ptr->fix_tag = 0;
2726 internal_ptr->fix_end = 0;
2727 symbol_ptr = internal_ptr;
2730 i < symbol_ptr->u.syment.n_numaux;
2736 internal_ptr->fix_tag = 0;
2737 internal_ptr->fix_end = 0;
2738 coff_swap_aux_in(abfd, (char *)(raw_src),
2739 symbol_ptr->u.syment.n_type,
2740 symbol_ptr->u.syment.n_sclass,
2741 &(internal_ptr->u.auxent));
2742 /* Remember that bal entries arn't pointerized */
2743 if (i != 1 || symbol_ptr->u.syment.n_sclass != C_LEAFPROC)
2746 coff_pointerize_aux(abfd,
2748 symbol_ptr->u.syment.n_type,
2749 symbol_ptr->u.syment.n_sclass,
2756 /* Free all the raw stuff */
2757 bfd_release(abfd, raw);
2759 for (internal_ptr = internal; internal_ptr < internal_end;
2762 if (internal_ptr->u.syment.n_sclass == C_FILE) {
2763 /* make a file symbol point to the name in the auxent, since
2764 the text ".file" is redundant */
2765 if ((internal_ptr+1)->u.auxent.x_file.x_n.x_zeroes == 0) {
2766 /* the filename is a long one, point into the string table */
2767 if (string_table == NULL) {
2768 string_table = build_string_table(abfd);
2771 internal_ptr->u.syment._n._n_n._n_offset =
2772 (int) (string_table - 4 +
2773 (internal_ptr+1)->u.auxent.x_file.x_n.x_offset);
2776 /* ordinary short filename, put into memory anyway */
2777 internal_ptr->u.syment._n._n_n._n_offset = (int)
2778 copy_name(abfd, (internal_ptr+1)->u.auxent.x_file.x_fname,
2783 if (internal_ptr->u.syment._n._n_n._n_zeroes != 0) {
2784 /* This is a "short" name. Make it long. */
2785 unsigned long i = 0;
2786 char *newstring = NULL;
2788 /* find the length of this string without walking into memory
2790 for (i = 0; i < 8; ++i) {
2791 if (internal_ptr->u.syment._n._n_name[i] == '\0') {
2793 } /* if end of string */
2794 } /* possible lengths of this string. */
2796 if ((newstring = (PTR) bfd_alloc(abfd, ++i)) == NULL) {
2797 bfd_error = no_memory;
2800 bzero(newstring, i);
2801 strncpy(newstring, internal_ptr->u.syment._n._n_name, i-1);
2802 internal_ptr->u.syment._n._n_n._n_offset = (int) newstring;
2803 internal_ptr->u.syment._n._n_n._n_zeroes = 0;
2805 else if (!SYMNAME_IN_DEBUG(&internal_ptr->u.syment)) {
2806 /* Long name already. Point symbol at the string in the table. */
2807 if (string_table == NULL) {
2808 string_table = build_string_table(abfd);
2810 internal_ptr->u.syment._n._n_n._n_offset = (int)
2811 (string_table - 4 + internal_ptr->u.syment._n._n_n._n_offset);
2814 /* Long name in debug section. Very similar. */
2815 if (debug_section == NULL) {
2816 debug_section = build_debug_section(abfd);
2818 internal_ptr->u.syment._n._n_n._n_offset = (int)
2819 (debug_section + internal_ptr->u.syment._n._n_n._n_offset);
2822 internal_ptr += internal_ptr->u.syment.n_numaux;
2825 obj_raw_syments(abfd) = internal;
2828 } /* get_normalized_symtab() */
2830 #endif /* NO_COFF_SYMBOLS */
2834 DEFUN(section_from_bfd_index,(abfd, index),
2838 struct sec *answer = abfd->sections;
2842 return &bfd_abs_section;
2844 if (index == N_UNDEF)
2846 return &bfd_und_section;
2848 if(index == N_DEBUG)
2850 return &bfd_debug_section;
2855 if (answer->target_index == index)
2857 answer = answer->next;
2860 return &bfd_und_section; /* For gcc -W and lint. Never executed. */
2863 #ifndef NO_COFF_LINENOS
2869 Creating the linenumber table is done by reading in the entire
2870 coff linenumber table, and creating another table for internal use.
2872 A coff line number table is structured so that each function
2873 is marked as having a line number of 0. Each line within the
2874 function is an offset from the first line in the function. The
2875 base of the line number information for the table is stored in
2876 the symbol associated with the function.
2878 The information is copied from the external to the internal
2879 table, and each symbol which marks a function is marked by
2882 How does this work ?
2887 coff_slurp_line_table(abfd, asect)
2891 LINENO *native_lineno;
2892 alent *lineno_cache;
2894 BFD_ASSERT(asect->lineno == (alent *) NULL);
2896 native_lineno = (LINENO *) buy_and_read(abfd,
2897 asect->line_filepos,
2900 asect->lineno_count));
2902 (alent *) bfd_alloc(abfd, (size_t) ((asect->lineno_count + 1) * sizeof(alent)));
2903 if (lineno_cache == NULL) {
2904 bfd_error = no_memory;
2907 unsigned int counter = 0;
2908 alent *cache_ptr = lineno_cache;
2909 LINENO *src = native_lineno;
2911 while (counter < asect->lineno_count) {
2912 struct internal_lineno dst;
2913 coff_swap_lineno_in(abfd, src, &dst);
2914 cache_ptr->line_number = dst.l_lnno;
2916 if (cache_ptr->line_number == 0) {
2917 coff_symbol_type *sym =
2918 (coff_symbol_type *) (dst.l_addr.l_symndx
2919 + obj_raw_syments(abfd))->u.syment._n._n_n._n_zeroes;
2920 cache_ptr->u.sym = (asymbol *) sym;
2921 sym->lineno = cache_ptr;
2924 cache_ptr->u.offset = dst.l_addr.l_paddr
2925 - bfd_section_vma(abfd, asect);
2926 } /* If no linenumber expect a symbol index */
2932 cache_ptr->line_number = 0;
2935 asect->lineno = lineno_cache;
2936 /* FIXME, free native_lineno here, or use alloca or something. */
2938 } /* coff_slurp_line_table() */
2940 #endif /* NO_COFF_LINENOS */
2942 #ifndef NO_COFF_LINENOS
2945 DEFUN(coff_slurp_symbol_table,(abfd),
2948 combined_entry_type *native_symbols;
2949 coff_symbol_type *cached_area;
2950 unsigned int *table_ptr;
2952 unsigned int number_of_symbols = 0;
2953 if (obj_symbols(abfd))
2955 bfd_seek(abfd, obj_sym_filepos(abfd), SEEK_SET);
2957 /* Read in the symbol table */
2958 if ((native_symbols = get_normalized_symtab(abfd)) == NULL) {
2962 /* Allocate enough room for all the symbols in cached form */
2964 (coff_symbol_type *)
2965 bfd_alloc(abfd, (size_t) (bfd_get_symcount(abfd) * sizeof(coff_symbol_type)));
2967 if (cached_area == NULL) {
2968 bfd_error = no_memory;
2973 bfd_alloc(abfd, (size_t) (bfd_get_symcount(abfd) * sizeof(unsigned int)));
2975 if (table_ptr == NULL) {
2976 bfd_error = no_memory;
2981 coff_symbol_type *dst = cached_area;
2982 unsigned int last_native_index = bfd_get_symcount(abfd);
2983 unsigned int this_index = 0;
2984 while (this_index < last_native_index) {
2985 combined_entry_type *src = native_symbols + this_index;
2986 table_ptr[this_index] = number_of_symbols;
2987 dst->symbol.the_bfd = abfd;
2989 dst->symbol.name = (char *)(src->u.syment._n._n_n._n_offset);
2991 We use the native name field to point to the cached field
2993 src->u.syment._n._n_n._n_zeroes = (int) dst;
2994 dst->symbol.section = section_from_bfd_index(abfd,
2995 src->u.syment.n_scnum);
2996 dst->symbol.flags = 0;
2997 dst->done_lineno = false;
2999 switch (src->u.syment.n_sclass) {
3003 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
3004 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
3005 dst->symbol.flags |= BSF_NOT_AT_END;
3007 /* Fall through to next case */
3015 if ((src->u.syment.n_scnum) == 0) {
3016 if ((src->u.syment.n_value) == 0) {
3017 dst->symbol.section = &bfd_und_section;
3018 dst->symbol.value= 0;
3021 dst->symbol.section = &bfd_com_section;
3022 dst->symbol.value = (src->u.syment.n_value);
3027 Base the value as an index from the base of the
3031 dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL;
3032 dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma;
3034 if (ISFCN((src->u.syment.n_type))) {
3036 A function ext does not go at the end of a file
3038 dst->symbol.flags |= BSF_NOT_AT_END;
3045 case C_STAT: /* static */
3047 case C_LEAFSTAT: /* static leaf procedure */
3049 case C_LABEL: /* label */
3050 if (src->u.syment.n_scnum == -2)
3051 dst->symbol.flags = BSF_DEBUGGING;
3053 dst->symbol.flags = BSF_LOCAL;
3055 Base the value as an index from the base of the section, if
3058 if (dst->symbol.section)
3059 dst->symbol.value = (src->u.syment.n_value) -
3060 dst->symbol.section->vma;
3062 dst->symbol.value = (src->u.syment.n_value) ;
3065 case C_MOS: /* member of structure */
3066 case C_EOS: /* end of structure */
3067 #ifdef NOTDEF /* C_AUTOARG has the same value */
3069 case C_GLBLREG: /* A29k-specific storage class */
3072 case C_REGPARM: /* register parameter */
3073 case C_REG: /* register variable */
3075 case C_AUTOARG: /* 960-specific storage class */
3077 case C_TPDEF: /* type definition */
3079 case C_AUTO: /* automatic variable */
3080 case C_FIELD: /* bit field */
3081 case C_ENTAG: /* enumeration tag */
3082 case C_MOE: /* member of enumeration */
3083 case C_MOU: /* member of union */
3084 case C_UNTAG: /* union tag */
3085 dst->symbol.flags = BSF_DEBUGGING;
3086 dst->symbol.value = (src->u.syment.n_value);
3089 case C_FILE: /* file name */
3090 case C_STRTAG: /* structure tag */
3092 case C_BINCL: /* beginning of include file */
3093 case C_EINCL: /* ending of include file */
3106 dst->symbol.flags = BSF_DEBUGGING;
3107 dst->symbol.value = (src->u.syment.n_value);
3110 case C_BLOCK: /* ".bb" or ".eb" */
3111 case C_FCN: /* ".bf" or ".ef" */
3112 case C_EFCN: /* physical end of function */
3113 dst->symbol.flags = BSF_LOCAL;
3115 Base the value as an index from the base of the section
3117 dst->symbol.value = (src->u.syment.n_value) - dst->symbol.section->vma;
3121 case C_EXTDEF: /* external definition */
3122 case C_ULABEL: /* undefined label */
3123 case C_USTATIC: /* undefined static */
3124 case C_LINE: /* line # reformatted as symbol table entry */
3125 case C_ALIAS: /* duplicate tag */
3126 case C_HIDDEN: /* ext symbol in dmert public lib */
3129 fprintf(stderr,"Unrecognized storage class %d\n",
3130 src->u.syment.n_sclass);
3132 dst->symbol.flags = BSF_DEBUGGING;
3133 dst->symbol.value = (src->u.syment.n_value);
3137 /* BFD_ASSERT(dst->symbol.flags != 0);*/
3141 dst->symbol.udata = 0;
3142 dst->lineno = (alent *) NULL;
3143 this_index += (src->u.syment.n_numaux) + 1;
3145 number_of_symbols++;
3146 } /* walk the native symtab */
3147 } /* bfdize the native symtab */
3149 obj_symbols(abfd) = cached_area;
3150 obj_raw_syments(abfd) = native_symbols;
3152 bfd_get_symcount(abfd) = number_of_symbols;
3153 obj_convert(abfd) = table_ptr;
3154 /* Slurp the line tables for each section too */
3159 coff_slurp_line_table(abfd, p);
3164 } /* coff_slurp_symbol_table() */
3167 coff_get_symtab_upper_bound(abfd)
3170 if (!coff_slurp_symbol_table(abfd))
3173 return (bfd_get_symcount(abfd) + 1) * (sizeof(coff_symbol_type *));
3178 DEFUN(coff_get_symtab, (abfd, alocation),
3180 asymbol **alocation)
3182 unsigned int counter = 0;
3183 coff_symbol_type *symbase;
3184 coff_symbol_type **location = (coff_symbol_type **) (alocation);
3185 if (!coff_slurp_symbol_table(abfd))
3188 symbase = obj_symbols(abfd);
3189 while (counter < bfd_get_symcount(abfd))
3191 /* This nasty code looks at the symbol to decide whether or
3192 not it is descibes a constructor/destructor entry point. It
3193 is structured this way to (hopefully) speed non matches */
3195 if (0 && symbase->symbol.name[9] == '$')
3197 bfd_constructor_entry(abfd,
3198 (asymbol **)location,
3199 symbase->symbol.name[10] == 'I' ?
3203 *(location++) = symbase++;
3207 return bfd_get_symcount(abfd);
3210 #endif /* NO_COFF_SYMBOLS */
3213 coff_get_reloc_upper_bound(abfd, asect)
3217 if (bfd_get_format(abfd) != bfd_object) {
3218 bfd_error = invalid_operation;
3221 return (asect->reloc_count + 1) * sizeof(arelent *);
3228 Coff relocations are easily transformed into the internal BFD form
3231 Reading a coff relocation table is done in the following stages:
3233 o The entire coff relocation table is read into memory.
3235 o Each relocation is processed in turn, first it is swapped from the
3236 external to the internal form.
3238 o The symbol referenced in the relocation's symbol index is
3239 turned intoa pointer into the canonical symbol table. Note
3240 that this table is the same as the one returned by a call to
3241 @code{bfd_canonicalize_symtab}. The back end will call the
3242 routine and save the result if a canonicalization hasn't been done.
3244 o The reloc index is turned into a pointer to a howto
3245 structure, in a back end specific way. For instance, the 386
3246 and 960 use the @code{r_type} to directly produce an index
3247 into a howto table vector; the 88k subtracts a number from the
3248 @code{r_type} field and creates an addend field.
3254 #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
3255 if (ptr && ptr->the_bfd == abfd \
3256 && ((ptr->flags & BSF_OLD_COMMON)== 0)) \
3258 cache_ptr->addend = -(ptr->section->vma + ptr->value); \
3261 cache_ptr->addend = 0; \
3266 DEFUN(coff_slurp_reloc_table,(abfd, asect, symbols),
3271 RELOC *native_relocs;
3272 arelent *reloc_cache;
3277 if (asect->relocation)
3279 if (asect->reloc_count == 0)
3281 if (asect->flags & SEC_CONSTRUCTOR)
3283 #ifndef NO_COFF_SYMBOLS
3284 if (!coff_slurp_symbol_table(abfd))
3288 (RELOC *) buy_and_read(abfd,
3292 asect->reloc_count));
3293 reloc_cache = (arelent *)
3294 bfd_alloc(abfd, (size_t) (asect->reloc_count * sizeof(arelent)));
3296 if (reloc_cache == NULL) {
3297 bfd_error = no_memory;
3302 for (idx = 0; idx < asect->reloc_count; idx ++)
3304 #ifdef RELOC_PROCESSING
3305 struct internal_reloc dst;
3306 struct external_reloc *src;
3308 cache_ptr = reloc_cache + idx;
3309 src = native_relocs + idx;
3310 bfd_swap_reloc_in(abfd, src, &dst);
3312 RELOC_PROCESSING(cache_ptr, &dst, symbols, abfd, asect);
3314 struct internal_reloc dst;
3316 struct external_reloc *src;
3318 cache_ptr = reloc_cache + idx;
3319 src = native_relocs + idx;
3321 bfd_swap_reloc_in(abfd, src, &dst);
3324 cache_ptr->address = dst.r_vaddr;
3326 if (dst.r_symndx != -1)
3328 cache_ptr->sym_ptr_ptr = symbols + obj_convert(abfd)[dst.r_symndx];
3329 ptr = *(cache_ptr->sym_ptr_ptr);
3333 cache_ptr->sym_ptr_ptr= bfd_abs_section.symbol_ptr_ptr;
3339 The symbols definitions that we have read in have been
3340 relocated as if their sections started at 0. But the offsets
3341 refering to the symbols in the raw data have not been
3342 modified, so we have to have a negative addend to compensate.
3344 Note that symbols which used to be common must be left alone */
3346 /* Calculate any reloc addend by looking at the symbol */
3347 CALC_ADDEND(abfd, ptr, dst, cache_ptr);
3349 cache_ptr->address -= asect->vma;
3350 /* !! cache_ptr->section = (asection *) NULL;*/
3352 /* Fill in the cache_ptr->howto field from dst.r_type */
3353 RTYPE2HOWTO(cache_ptr, &dst);
3358 asect->relocation = reloc_cache;
3363 /* This is stupid. This function should be a boolean predicate */
3365 DEFUN(coff_canonicalize_reloc, (abfd, section, relptr, symbols),
3368 arelent **relptr AND
3371 arelent *tblptr = section->relocation;
3372 unsigned int count = 0;
3375 if (section->flags & SEC_CONSTRUCTOR)
3377 /* this section has relocs made up by us, they are not in the
3378 file, so take them out of their chain and place them into
3379 the data area provided */
3380 arelent_chain *chain = section->constructor_chain;
3381 for (count = 0; count < section->reloc_count; count ++)
3383 *relptr ++ = &chain->relent;
3384 chain = chain->next;
3390 coff_slurp_reloc_table(abfd, section, symbols);
3393 tblptr = section->relocation;
3397 for (; count++ < section->reloc_count;)
3398 *relptr++ = tblptr++;
3403 return section->reloc_count;
3406 #ifndef NO_COFF_SYMBOLS
3409 provided a BFD, a section and an offset into the section, calculate and
3410 return the name of the source file and the line nearest to the wanted
3415 DEFUN(coff_find_nearest_line,(abfd,
3423 asection *section AND
3424 asymbol **ignore_symbols AND
3426 CONST char **filename_ptr AND
3427 CONST char **functionname_ptr AND
3428 unsigned int *line_ptr)
3430 static bfd *cache_abfd;
3431 static asection *cache_section;
3432 static bfd_vma cache_offset;
3433 static unsigned int cache_i;
3434 static alent *cache_l;
3437 coff_data_type *cof = coff_data(abfd);
3438 /* Run through the raw syments if available */
3439 combined_entry_type *p;
3441 unsigned int line_base = 0;
3445 *functionname_ptr = 0;
3448 /* Don't try and find line numbers in a non coff file */
3449 if (abfd->xvec->flavour != bfd_target_coff_flavour)
3455 p = cof->raw_syments;
3457 for (i = 0; i < cof->raw_syment_count; i++) {
3458 if (p->u.syment.n_sclass == C_FILE) {
3459 /* File name has been moved into symbol */
3460 *filename_ptr = (char *) p->u.syment._n._n_n._n_offset;
3463 p += 1 + p->u.syment.n_numaux;
3465 /* Now wander though the raw linenumbers of the section */
3467 If this is the same BFD as we were previously called with and this is
3468 the same section, and the offset we want is further down then we can
3469 prime the lookup loop
3471 if (abfd == cache_abfd &&
3472 section == cache_section &&
3473 offset >= cache_offset) {
3479 l = section->lineno;
3482 for (; i < section->lineno_count; i++) {
3483 if (l->line_number == 0) {
3484 /* Get the symbol this line number points at */
3485 coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym);
3486 *functionname_ptr = coff->symbol.name;
3488 combined_entry_type *s = coff->native;
3489 s = s + 1 + s->u.syment.n_numaux;
3491 S should now point to the .bf of the function
3493 if (s->u.syment.n_numaux) {
3495 The linenumber is stored in the auxent
3497 union internal_auxent *a = &((s + 1)->u.auxent);
3498 line_base = a->x_sym.x_misc.x_lnsz.x_lnno;
3503 if (l->u.offset > offset)
3505 *line_ptr = l->line_number + line_base + 1;
3511 cache_section = section;
3512 cache_offset = offset;
3521 coff_sym_filepos(abfd)
3524 return obj_sym_filepos(abfd);
3528 #endif /* NO_COFF_SYMBOLS */
3532 DEFUN(coff_sizeof_headers,(abfd, reloc),
3538 if (reloc == false) {
3539 size = FILHSZ + AOUTSZ;
3545 size += abfd->section_count * SCNHSZ;
3550 DEFUN(get_value,(reloc, seclet),
3552 bfd_seclet_type *seclet)
3555 asymbol *symbol = *(reloc->sym_ptr_ptr);
3556 /* A symbol holds a pointer to a section, and an offset from the
3557 base of the section. To relocate, we find where the section will
3558 live in the output and add that in */
3560 if (symbol->section == &bfd_und_section)
3562 /* Ouch, this is an undefined symbol.. */
3563 bfd_error_vector.undefined_symbol(reloc, seclet);
3564 value = symbol->value;
3568 value = symbol->value +
3569 symbol->section->output_offset +
3570 symbol->section->output_section->vma;
3574 /* Add the value contained in the relocation */
3575 value += (short)((reloc->addend) & 0xffff);
3581 DEFUN(perform_slip,(s, slip, input_section, value),
3583 unsigned int slip AND
3584 asection *input_section AND
3588 /* Find all symbols past this point, and make them know
3593 if (p->section == input_section)
3595 /* This was pointing into this section, so mangle it */
3596 if (p->value > value)
3606 DEFUN(movb1,(input_section, symbols, r, shrink),
3607 asection *input_section AND
3608 asymbol **symbols AND
3610 unsigned int shrink)
3612 bfd_vma value = get_value(r,0);
3614 if (value >= 0xff00)
3617 /* Change the reloc type from 16bit, possible 8 to 8bit
3619 r->howto = r->howto + 1;
3620 /* The place to relc moves back by one */
3623 /* This will be two bytes smaller in the long run */
3625 perform_slip(symbols, 2, input_section, r->address - shrink +1);
3633 DEFUN(jmp1,(input_section, symbols, r, shrink),
3634 asection *input_section AND
3635 asymbol **symbols AND
3637 unsigned int shrink)
3641 bfd_vma value = get_value(r, 0);
3643 bfd_vma dot = input_section->output_section->vma +
3644 input_section->output_offset + r->address;
3647 /* See if the address we're looking at within 127 bytes of where
3648 we are, if so then we can use a small branch rather than the
3649 jump we were going to */
3651 gap = value - (dot - shrink);
3654 if (-120 < (long)gap && (long)gap < 120 )
3657 /* Change the reloc type from 16bit, possible 8 to 8bit
3659 r->howto = r->howto + 1;
3660 /* The place to relc moves back by one */
3663 /* This will be two bytes smaller in the long run */
3665 perform_slip(symbols, 2, input_section, r->address-shrink +1);
3673 DEFUN(bfd_coff_relax_section,(abfd, i, symbols),
3679 /* Get enough memory to hold the stuff */
3680 bfd *input_bfd = i->owner;
3681 asection *input_section = i;
3683 boolean new = false;
3685 bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
3687 arelent **reloc_vector = (arelent **)bfd_xmalloc(reloc_size);
3689 /* Get the relocs and think about them */
3690 if (bfd_canonicalize_reloc(input_bfd,
3696 for (parent = reloc_vector; *parent; parent++)
3698 arelent *r = *parent;
3699 switch (r->howto->type) {
3707 shrink = movb1(input_section, symbols, r, shrink);
3712 shrink = jmp1(input_section, symbols, r, shrink);
3720 input_section->_cooked_size -= shrink;
3721 free((char *)reloc_vector);
3726 DEFUN(bfd_coff_get_relocated_section_contents,(in_abfd, seclet),
3728 bfd_seclet_type *seclet)
3731 /* Get enough memory to hold the stuff */
3732 bfd *input_bfd = seclet->u.indirect.section->owner;
3733 asection *input_section = seclet->u.indirect.section;
3734 bfd_byte *data = (bfd_byte *)malloc(input_section->_raw_size);
3735 bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
3737 arelent **reloc_vector = (arelent **)bfd_xmalloc(reloc_size);
3739 /* read in the section */
3740 bfd_get_section_contents(input_bfd,
3744 input_section->_raw_size);
3747 if (bfd_canonicalize_reloc(input_bfd,
3750 seclet->u.indirect.symbols) )
3752 arelent **parent = reloc_vector;
3757 unsigned int dst_address = 0;
3758 unsigned int src_address = 0;
3762 /* Find how long a run we can do */
3763 while (dst_address < seclet->size)
3769 /* Note that the relaxing didn't tie up the addresses in the
3770 relocation, so we use the original address to work out the
3771 run of non-relocated data */
3772 run = reloc->address - src_address;
3778 run = seclet->size - dst_address;
3780 /* Copy the bytes */
3781 for (idx = 0; idx < run; idx++)
3783 data[dst_address++] = data[src_address++];
3786 /* Now do the relocation */
3790 switch (reloc->howto->type)
3793 /* Speciial relaxed type */
3795 bfd_vma dot = seclet->offset + dst_address + seclet->u.indirect.section->output_section->vma;
3796 int gap = get_value(reloc,seclet)-dot-1;
3797 if ((gap & ~0xff ) != 0 &&((gap & 0xff00)!= 0xff00)) abort();
3799 bfd_put_8(in_abfd,gap, data+dst_address);
3801 switch (data[dst_address-1])
3806 bfd_put_8(in_abfd, 0x55, data+dst_address-1);
3810 bfd_put_8(in_abfd, 0x40, data+dst_address-1);
3829 /* Special relaxed type, there will be a gap between where we
3830 get stuff from and where we put stuff to now
3832 for a mov.b @aa:16 -> mov.b @aa:8
3833 opcode 0x6a 0x0y offset
3836 if (data[dst_address-1] != 0x6a)
3838 switch (data[dst_address] & 0xf0)
3842 data[dst_address-1] = (data[src_address] & 0xf) | 0x20;
3846 data[dst_address-1] = (data[src_address] & 0xf) | 0x30;
3852 /* the offset must fit ! after all, what was all the relaxing
3855 bfd_put_8(in_abfd, get_value(reloc, seclet), data + dst_address);
3857 /* Note the magic - src goes up by two bytes, but dst by only
3866 bfd_vma dot = seclet->offset + dst_address + seclet->u.indirect.section->output_section->vma;
3867 int gap = get_value(reloc,seclet)-dot;
3868 if (gap > 127 || gap < -128)
3870 bfd_error_vector.reloc_value_truncated(reloc, seclet);
3873 bfd_put_8(in_abfd,gap, data+dst_address);
3882 unsigned int gap =get_value(reloc,seclet);
3885 bfd_error_vector.reloc_value_truncated(reloc, seclet);
3888 bfd_put_8(in_abfd, gap, data+dst_address);
3896 /* A relword which would have like to have been a pcrel */
3898 /* A relword which would like to have been modified but
3901 bfd_put_16(in_abfd, get_value(reloc,seclet), data+dst_address);
3912 free((char *)reloc_vector);
3918 #define coff_core_file_failing_command _bfd_dummy_core_file_failing_command
3919 #define coff_core_file_failing_signal _bfd_dummy_core_file_failing_signal
3920 #define coff_core_file_matches_executable_p _bfd_dummy_core_file_matches_executable_p
3921 #define coff_slurp_armap bfd_slurp_coff_armap
3922 #define coff_slurp_extended_name_table _bfd_slurp_extended_name_table
3923 #define coff_truncate_arname bfd_dont_truncate_arname
3924 #define coff_openr_next_archived_file bfd_generic_openr_next_archived_file
3925 #define coff_generic_stat_arch_elt bfd_generic_stat_arch_elt
3926 #define coff_get_section_contents bfd_generic_get_section_contents
3927 #define coff_close_and_cleanup bfd_generic_close_and_cleanup
3929 #define coff_bfd_debug_info_start bfd_void
3930 #define coff_bfd_debug_info_end bfd_void
3931 #define coff_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
3932 #define coff_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
3933 #define coff_bfd_relax_section bfd_generic_relax_section