1 /* Support for Intel 960 COFF and Motorola 88k BCS COFF (and maybe others) */
3 /* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Diddler.
7 BFD is free software; you can redistribute it and/or modify it under the
8 terms of the GNU General Public License as published by the Free Software
9 Foundation; either version 1, or (at your option) any later version.
11 BFD is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
16 You should have received a copy of the GNU General Public License along with
17 BFD; see the file COPYING. If not, write to the Free Software Foundation,
18 675 Mass Ave, Cambridge, MA 02139, USA.
22 @section coff backends
24 BFD supports a number of different flavours of coff format. The major
25 difference between formats are the sizes and alignments of fields in
26 structures on disk, and the occasional extra field.
28 Coff in all its varieties is implimented with a few common files and a
29 number of implementation specific files. For example, The 88k bcs coff
30 format is implemented in the file @code{m88k-bcs.c}. This file
31 @code{#include}s @code{m88k-bcs.h} which defines the external
32 structure of the coff format for the 88k, and @code{internalcoff.h}
33 which defines the internal structure. @code{m88k-bcs.c} also defines
34 the relocations used by the 88k format @xref{Relocations}. Then the
35 major portion of coff code is included (@code{coffcode.h}) which
36 defines the methods used to act upon the types defined in
37 @code{m88k-bcs.h} and @code{internalcoff.h}.
39 The Intel i960 processor version of coff is implemented in
40 @code{icoff.c}. This file has the same structure as
41 @code{m88k-bcs.c}, except that it includes @code{intel-coff.h} rather
42 than @code{m88k-bcs.h}.
44 @subsection Porting To A New Version of Coff
46 The recommended method is to select from the existing implimentations
47 the version of coff which is most like the one you want to use, for
48 our purposes, we'll say that i386 coff is the one you select, and that
49 your coff flavour is called foo. Copy the @code{i386coff.c} to @code{foocoff.c},
50 copy @code{../include/i386coff.h} to @code{../include/foocoff.h} and
51 add the lines to @code{targets.c} and @code{Makefile.in} so that your
54 Alter the shapes of the structures in @code{../include/foocoff.h} so
55 that they match what you need. You will probably also have to add
56 @code{#ifdef}s to the code in @code{internalcoff.h} and
57 @code{coffcode.h} if your version of coff is too wild.
59 You can verify that your new bfd backend works quite simply by
60 building @code{objdump} from the @code{binutils} directory, and
61 making sure that its version of what's going on at your host systems
62 idea (assuming it has the pretty standard coff dump utility (usually
63 called @code{att-dump} or just @code{dump})) are the same.
65 Then clean up your code, and send what you've done to Cygnus. Then your stuff
66 will be in the next release, and you won't have to keep integrating
69 @subsection How The Coff Backend Works
71 @subsubsection Bit Twiddling
72 Each flavour of coff supported in bfd has its own header file
73 descibing the external layout of the structures. There is also an
74 internal description of the coff layout (in @code{internalcoff.h})
75 file (@code{}). A major function of the coff backend is swapping the
76 bytes and twiddling the bits to translate the external form of the
77 structures into the normal internal form. This is all performed in the
78 @code{bfd_swap}_@i{thing}_@i{direction} routines. Some elements are
79 different sizes between different versions of coff, it is the duty of
80 the coff version specific include file to override the definitions of
81 various packing routines in @code{coffcode.h}. Eg the size of line
82 number entry in coff is sometimes 16 bits, and sometimes 32 bits.
83 @code{#define}ing @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will
84 select the correct one. No doubt, some day someone will find a version
85 of coff which has a varying field size not catered for at the moment.
86 To port bfd, that person will have to add more @code{#defines}.
88 Three of the bit twiddling routines are exported to @code{gdb};
89 @code{coff_swap_aux_in}, @code{coff_swap_sym_in} and
90 @code{coff_swap_linno_in}. @code{GDB} reads the symbol table on its
91 own, but uses bfd to fix things up.
93 @subsubsection Symbol Reading
94 The simple canonical form for symbols used by bfd is not rich enough
95 to keep all the information available in a coff symbol table. The back
96 end gets around this by keeping the original symbol table around,
99 When a symbol table is requested (through a call to
100 @code{bfd_canonicalize_symtab}, a request gets through to
101 @code{get_normalized_symtab}. This reads the symbol table from the
102 coff file and swaps all the structures inside into the internal form.
103 It also fixes up all the pointers in the table (represented in the file
104 by offsets from the first symbol in the table) into physical pointers
105 to elements in the new internal table. This involves some work since
106 the meanings of fields changes depending upon context; a field that is a
107 pointer to another structure in the symbol table at one moment may be
108 the size in bytes of a structure in the next.
110 Another pass is made over the table. All symbols which mark file names
111 (@code{C_FILE} symbols) are modified so that the internal string
112 points to the value in the auxent (the real filename) rather than the
113 normal text associated with the symbol (@code{".file"}).
115 At this time the symbol names are moved around. Coff stores all
116 symbols less than nine characters long physically within the symbol
117 table, longer strings are kept at the end of the file in the string
118 table. This pass moves all strings into memory, and replaces them with
119 pointers to the strings.
121 The symbol table is massaged once again, this time to create the
122 canonical table used by the bfd application. Each symbol is inspected
123 in turn, and a decision made (using the @code{sclass} field) about the
124 various flags to set in the @code{asymbol} @xref{Symbols}. The
125 generated canonical table shares strings with the hidden internal
128 Any linenumbers are read from the coff file too, and attatched to the
129 symbols which own the functions the linenumbers belong to.
131 @subsubsection Symbol Writing
132 Writing a symbol to a coff file which didn't come from a coff file
133 will lose any debugging information. The @code{asymbol} structure
134 remembers the bfd from which was born, and on output the back end
135 makes sure that the same destination target as source target is
138 When the symbols have come from a coff file then all the debugging
139 information is preserved.
141 Symbol tables are provided for writing to the back end in a vector of
142 pointers to pointers. This allows applications like the linker to
143 accumulate and output large symbol tables without having to do too
146 The symbol table is not output to a writable bfd until it is closed.
147 The order of operations on the canonical symbol table at that point
150 @item coff_renumber_symbols
151 This function runs through the provided symbol table and patches each
152 symbol marked as a file place holder (@code{C_FILE}) to point to the
153 next file place holder in the list. It also marks each @code{offset}
154 field in the list with the offset from the first symbol of the current
157 Another function of this procedure is to turn the canonical value form
158 of bfd into the form used by coff. Internally, bfd expects symbol
159 values to be offsets from a section base; so a symbol physically at
160 0x120, but in a section starting at 0x100, would have the value 0x20.
161 Coff expects symbols to contain their final value, so symbols have
162 their values changed at this point to reflect their sum with their
163 owning section. Note that this transformation uses the
164 @code{output_section} field of the @code{asymbol}'s @code{asection}
166 @item coff_mangle_symbols
167 This routine runs though the provided symbol table and uses the
168 offsets generated by the previous pass and the pointers generated when
169 the symbol table was read in to create the structured hierachy
170 required by coff. It changes each pointer to a symbol to an index into
171 the symbol table of the symbol being referenced.
172 @item coff_write_symbols
173 This routine runs through the symbol table and patches up the symbols
174 from their internal form into the coff way, calls the bit twiddlers
175 and writes out the tabel to the file.
181 The hidden information for an asymbol is:
185 $ typedef struct coff_ptr_struct
188 Remembers the offset from the first symbol in the file for this
189 symbol. Generated by @code{coff_renumber_symbols}.
191 $ unsigned int offset;
193 Should the tag field of this symbol be renumbered.
194 Created by @code{coff_pointerize_aux}.
198 Should the endidx field of this symbol be renumbered.
199 Created by @code{coff_pointerize_aux}.
203 The container for the symbol structure as read and translated from the file.
206 $ union internal_auxent auxent;
207 $ struct internal_syment syment;
209 $ } combined_entry_type;
214 Each canonical asymbol really looks like this:
218 $ typedef struct coff_symbol_struct
221 The actual symbol which the rest of bfd works with
225 A pointer to the hidden information for this symbol
227 $ combined_entry_type *native;
229 A pointer to the linenumber information for this symbol
231 $ struct lineno_cache_entry *lineno;
232 $ } coff_symbol_type;
239 /* Most of this hacked by Steve Chamberlain, steve@cygnus.com */
241 #include "archures.h" /* Machine architectures and types */
243 /* Align an address upward to a boundary, expressed as a number of bytes.
244 E.g. align to an 8-byte boundary with argument of 8. */
245 #define ALIGN(this, boundary) \
246 ((( (this) + ((boundary) -1)) & (~((boundary)-1))))
248 /* Align an address upward to a power of two. Argument is the power
249 of two, e.g. 8-byte alignment uses argument of 3 (8 == 2^3). */
250 #define i960_align(addr, align) \
251 ( ((addr) + ((1<<(align))-1)) & (-1 << (align)))
254 #define PUTWORD bfd_h_put_32
255 #define PUTHALF bfd_h_put_16
257 #ifndef GET_FCN_LNNOPTR
258 #define GET_FCN_LNNOPTR(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_lnnoptr)
261 #ifndef GET_FCN_ENDNDX
262 #define GET_FCN_ENDNDX(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_endndx)
265 #ifndef PUT_FCN_LNNOPTR
266 #define PUT_FCN_LNNOPTR(abfd, in, ext) PUTWORD(abfd, in, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_lnnoptr)
268 #ifndef PUT_FCN_ENDNDX
269 #define PUT_FCN_ENDNDX(abfd, in, ext) PUTWORD(abfd, in, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_endndx)
271 #ifndef GET_LNSZ_LNNO
272 #define GET_LNSZ_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_lnno)
274 #ifndef GET_LNSZ_SIZE
275 #define GET_LNSZ_SIZE(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_size)
277 #ifndef PUT_LNSZ_LNNO
278 #define PUT_LNSZ_LNNO(abfd, in, ext) bfd_h_put_16(abfd, in, (bfd_byte *)ext->x_sym.x_misc.x_lnsz.x_lnno)
280 #ifndef PUT_LNSZ_SIZE
281 #define PUT_LNSZ_SIZE(abfd, in, ext) bfd_h_put_16(abfd, in, (bfd_byte*) ext->x_sym.x_misc.x_lnsz.x_size)
283 #ifndef GET_SCN_SCNLEN
284 #define GET_SCN_SCNLEN(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_scnlen)
286 #ifndef GET_SCN_NRELOC
287 #define GET_SCN_NRELOC(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *)ext->x_scn.x_nreloc)
289 #ifndef GET_SCN_NLINNO
290 #define GET_SCN_NLINNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *)ext->x_scn.x_nlinno)
292 #ifndef PUT_SCN_SCNLEN
293 #define PUT_SCN_SCNLEN(abfd,in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_scn.x_scnlen)
295 #ifndef PUT_SCN_NRELOC
296 #define PUT_SCN_NRELOC(abfd,in, ext) bfd_h_put_16(abfd, in, (bfd_byte *)ext->x_scn.x_nreloc)
298 #ifndef PUT_SCN_NLINNO
299 #define PUT_SCN_NLINNO(abfd,in, ext) bfd_h_put_16(abfd,in, (bfd_byte *) ext->x_scn.x_nlinno)
304 /* void warning(); */
307 * Return a word with STYP_* (scnhdr.s_flags) flags set to represent the
308 * incoming SEC_* flags. The inverse of this function is styp_to_sec_flags().
309 * NOTE: If you add to/change this routine, you should mirror the changes
310 * in styp_to_sec_flags().
313 DEFUN(sec_to_styp_flags
, (sec_name
, sec_flags
),
314 CONST
char * sec_name AND
319 if (!strcmp(sec_name
, _TEXT
)) {
320 return((long)STYP_TEXT
);
321 } else if (!strcmp(sec_name
, _DATA
)) {
322 return((long)STYP_DATA
);
323 } else if (!strcmp(sec_name
, _BSS
)) {
324 return((long)STYP_BSS
);
327 /* Try and figure out what it should be */
328 if (sec_flags
& SEC_CODE
) styp_flags
= STYP_TEXT
;
329 if (sec_flags
& SEC_DATA
) styp_flags
= STYP_DATA
;
330 else if (sec_flags
& SEC_READONLY
)
331 #ifdef STYP_LIT /* 29k readonly text/data section */
332 styp_flags
= STYP_LIT
;
334 styp_flags
= STYP_TEXT
;
335 #endif /* STYP_LIT */
336 else if (sec_flags
& SEC_LOAD
) styp_flags
= STYP_TEXT
;
338 if (styp_flags
== 0) styp_flags
= STYP_BSS
;
343 * Return a word with SEC_* flags set to represent the incoming
344 * STYP_* flags (from scnhdr.s_flags). The inverse of this
345 * function is sec_to_styp_flags().
346 * NOTE: If you add to/change this routine, you should mirror the changes
347 * in sec_to_styp_flags().
350 DEFUN(styp_to_sec_flags
, (styp_flags
),
353 flagword sec_flags
=0;
355 if ((styp_flags
& STYP_TEXT
) || (styp_flags
& STYP_DATA
))
356 sec_flags
= (SEC_LOAD
| SEC_ALLOC
);
357 else if (styp_flags
& STYP_BSS
)
358 sec_flags
= SEC_ALLOC
;
360 #ifdef STYP_LIT /* A29k readonly text/data section type */
361 if ((styp_flags
& STYP_LIT
) == STYP_LIT
)
362 sec_flags
= (SEC_LOAD
| SEC_ALLOC
| SEC_READONLY
);
363 #endif /* STYP_LIT */
369 DEFUN(get_index
,(symbol
),
372 return (int) symbol
->value
;
376 DEFUN(set_index
,(symbol
, idx
),
384 /* **********************************************************************
385 Here are all the routines for swapping the structures seen in the
386 outside world into the internal forms.
391 DEFUN(bfd_swap_reloc_in
,(abfd
, reloc_src
, reloc_dst
),
394 struct internal_reloc
*reloc_dst
)
396 reloc_dst
->r_vaddr
= bfd_h_get_32(abfd
, (bfd_byte
*)reloc_src
->r_vaddr
);
397 reloc_dst
->r_symndx
= bfd_h_get_32(abfd
, (bfd_byte
*) reloc_src
->r_symndx
);
398 reloc_dst
->r_type
= bfd_h_get_16(abfd
, (bfd_byte
*) reloc_src
->r_type
);
400 reloc_dst
->r_offset
= bfd_h_get_16(abfd
, (bfd_byte
*) reloc_src
->r_offset
);
406 DEFUN(bfd_swap_reloc_out
,(abfd
, reloc_src
, reloc_dst
),
408 struct internal_reloc
*reloc_src AND
409 struct external_reloc
*reloc_dst
)
411 bfd_h_put_32(abfd
, reloc_src
->r_vaddr
, (bfd_byte
*) reloc_dst
->r_vaddr
);
412 bfd_h_put_32(abfd
, reloc_src
->r_symndx
, (bfd_byte
*) reloc_dst
->r_symndx
);
413 bfd_h_put_16(abfd
, reloc_src
->r_type
, (bfd_byte
*) reloc_dst
->r_type
);
415 bfd_h_put_16(abfd
, reloc_src
->r_offset
, (bfd_byte
*) reloc_dst
->r_offset
);
421 DEFUN(bfd_swap_filehdr_in
,(abfd
, filehdr_src
, filehdr_dst
),
423 FILHDR
*filehdr_src AND
424 struct internal_filehdr
*filehdr_dst
)
426 filehdr_dst
->f_magic
= bfd_h_get_16(abfd
, (bfd_byte
*) filehdr_src
->f_magic
);
427 filehdr_dst
->f_nscns
= bfd_h_get_16(abfd
, (bfd_byte
*)filehdr_src
-> f_nscns
);
428 filehdr_dst
->f_timdat
= bfd_h_get_32(abfd
, (bfd_byte
*)filehdr_src
-> f_timdat
);
429 filehdr_dst
->f_symptr
= bfd_h_get_32(abfd
, (bfd_byte
*)filehdr_src
-> f_symptr
);
430 filehdr_dst
->f_nsyms
= bfd_h_get_32(abfd
, (bfd_byte
*)filehdr_src
-> f_nsyms
);
431 filehdr_dst
->f_opthdr
= bfd_h_get_16(abfd
, (bfd_byte
*)filehdr_src
-> f_opthdr
);
432 filehdr_dst
->f_flags
= bfd_h_get_16(abfd
, (bfd_byte
*)filehdr_src
-> f_flags
);
436 DEFUN(bfd_swap_filehdr_out
,(abfd
, filehdr_in
, filehdr_out
),
438 struct internal_filehdr
*filehdr_in AND
441 bfd_h_put_16(abfd
, filehdr_in
->f_magic
, (bfd_byte
*) filehdr_out
->f_magic
);
442 bfd_h_put_16(abfd
, filehdr_in
->f_nscns
, (bfd_byte
*) filehdr_out
->f_nscns
);
443 bfd_h_put_32(abfd
, filehdr_in
->f_timdat
, (bfd_byte
*) filehdr_out
->f_timdat
);
444 bfd_h_put_32(abfd
, filehdr_in
->f_symptr
, (bfd_byte
*) filehdr_out
->f_symptr
);
445 bfd_h_put_32(abfd
, filehdr_in
->f_nsyms
, (bfd_byte
*) filehdr_out
->f_nsyms
);
446 bfd_h_put_16(abfd
, filehdr_in
->f_opthdr
, (bfd_byte
*) filehdr_out
->f_opthdr
);
447 bfd_h_put_16(abfd
, filehdr_in
->f_flags
, (bfd_byte
*) filehdr_out
->f_flags
);
453 DEFUN(coff_swap_sym_in
,(abfd
, ext1
, in1
),
458 SYMENT
*ext
= (SYMENT
*)ext1
;
459 struct internal_syment
*in
= (struct internal_syment
*)in1
;
461 if( ext
->e
.e_name
[0] == 0) {
462 in
->_n
._n_n
._n_zeroes
= 0;
463 in
->_n
._n_n
._n_offset
= bfd_h_get_32(abfd
, (bfd_byte
*) ext
->e
.e
.e_offset
);
466 memcpy(in
->_n
._n_name
, ext
->e
.e_name
, SYMNMLEN
);
468 in
->n_value
= bfd_h_get_32(abfd
, (bfd_byte
*) ext
->e_value
);
469 in
->n_scnum
= bfd_h_get_16(abfd
, (bfd_byte
*) ext
->e_scnum
);
470 if (sizeof(ext
->e_type
) == 2){
471 in
->n_type
= bfd_h_get_16(abfd
, (bfd_byte
*) ext
->e_type
);
474 in
->n_type
= bfd_h_get_32(abfd
, (bfd_byte
*) ext
->e_type
);
476 in
->n_sclass
= bfd_h_get_8(abfd
, ext
->e_sclass
);
477 in
->n_numaux
= bfd_h_get_8(abfd
, ext
->e_numaux
);
481 DEFUN(coff_swap_sym_out
,(abfd
,in
, ext
),
483 struct internal_syment
*in AND
486 if(in
->_n
._n_name
[0] == 0) {
487 bfd_h_put_32(abfd
, 0, (bfd_byte
*) ext
->e
.e
.e_zeroes
);
488 bfd_h_put_32(abfd
, in
->_n
._n_n
._n_offset
, (bfd_byte
*) ext
->e
.e
.e_offset
);
491 memcpy(ext
->e
.e_name
, in
->_n
._n_name
, SYMNMLEN
);
493 bfd_h_put_32(abfd
, in
->n_value
, (bfd_byte
*) ext
->e_value
);
494 bfd_h_put_16(abfd
, in
->n_scnum
, (bfd_byte
*) ext
->e_scnum
);
495 if (sizeof(ext
->e_type
) == 2)
497 bfd_h_put_16(abfd
, in
->n_type
, (bfd_byte
*) ext
->e_type
);
501 bfd_h_put_32(abfd
, in
->n_type
, (bfd_byte
*) ext
->e_type
);
503 bfd_h_put_8(abfd
, in
->n_sclass
, ext
->e_sclass
);
504 bfd_h_put_8(abfd
, in
->n_numaux
, ext
->e_numaux
);
508 DEFUN(coff_swap_aux_in
,(abfd
, ext1
, type
, class, in1
),
515 AUXENT
*ext
= (AUXENT
*)ext1
;
516 union internal_auxent
*in
= (union internal_auxent
*)in1
;
519 if (ext
->x_file
.x_fname
[0] == 0) {
520 in
->x_file
.x_n
.x_zeroes
= 0;
521 in
->x_file
.x_n
.x_offset
= bfd_h_get_32(abfd
, (bfd_byte
*) ext
->x_file
.x_n
.x_offset
);
523 memcpy (in
->x_file
.x_fname
, ext
->x_file
.x_fname
,
524 sizeof (in
->x_file
.x_fname
));
533 if (type
== T_NULL
) {
534 in
->x_scn
.x_scnlen
= GET_SCN_SCNLEN(abfd
, ext
);
535 in
->x_scn
.x_nreloc
= GET_SCN_NRELOC(abfd
, ext
);
536 in
->x_scn
.x_nlinno
= GET_SCN_NLINNO(abfd
, ext
);
540 in
->x_sym
.x_tagndx
.l
= bfd_h_get_32(abfd
, (bfd_byte
*) ext
->x_sym
.x_tagndx
);
542 in
->x_sym
.x_tvndx
= bfd_h_get_16(abfd
, (bfd_byte
*) ext
->x_sym
.x_tvndx
);
545 if (ISARY(type
) || class == C_BLOCK
) {
546 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]);
547 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]);
548 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]);
549 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]);
551 in
->x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
= GET_FCN_LNNOPTR(abfd
, ext
);
552 in
->x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
= GET_FCN_ENDNDX(abfd
, ext
);
555 in
->x_sym
.x_misc
.x_fsize
= bfd_h_get_32(abfd
, (bfd_byte
*) ext
->x_sym
.x_misc
.x_fsize
);
558 in
->x_sym
.x_misc
.x_lnsz
.x_lnno
= GET_LNSZ_LNNO(abfd
, ext
);
559 in
->x_sym
.x_misc
.x_lnsz
.x_size
= GET_LNSZ_SIZE(abfd
, ext
);
565 DEFUN(coff_swap_aux_out
,(abfd
, in
, type
, class, ext
),
567 union internal_auxent
*in AND
574 if (in
->x_file
.x_fname
[0] == 0) {
575 PUTWORD(abfd
, 0, (bfd_byte
*) ext
->x_file
.x_n
.x_zeroes
);
576 PUTWORD(abfd
, in
->x_file
.x_n
.x_offset
, (bfd_byte
*) ext
->x_file
.x_n
.x_offset
);
579 memcpy ( ext
->x_file
.x_fname
,in
->x_file
.x_fname
,
580 sizeof (in
->x_file
.x_fname
));
588 if (type
== T_NULL
) {
590 PUT_SCN_SCNLEN(abfd
, in
->x_scn
.x_scnlen
, ext
);
591 PUT_SCN_NRELOC(abfd
, in
->x_scn
.x_nreloc
, ext
);
592 PUT_SCN_NLINNO(abfd
, in
->x_scn
.x_nlinno
, ext
);
596 PUTWORD(abfd
, in
->x_sym
.x_tagndx
.l
, (bfd_byte
*) ext
->x_sym
.x_tagndx
);
598 PUTWORD(abfd
, in
->x_sym
.x_tvndx
, (bfd_byte
*) ext
->x_sym
.x_tvndx
);
602 PUTWORD(abfd
, in
->x_sym
.x_misc
.x_fsize
, (bfd_byte
*) ext
->x_sym
.x_misc
.x_fsize
);
603 PUT_FCN_LNNOPTR(abfd
, in
->x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
, ext
);
604 PUT_FCN_ENDNDX(abfd
, in
->x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
, ext
);
608 if (ISARY(type
) || class == C_BLOCK
) {
609 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]);
610 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]);
611 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]);
612 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]);
615 PUT_LNSZ_LNNO(abfd
, in
->x_sym
.x_misc
.x_lnsz
.x_lnno
, ext
);
616 PUT_LNSZ_SIZE(abfd
, in
->x_sym
.x_misc
.x_lnsz
.x_size
, ext
);
618 PUT_FCN_LNNOPTR(abfd
, in
->x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
, ext
);
619 PUT_FCN_ENDNDX(abfd
, in
->x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
, ext
);
627 DEFUN(coff_swap_lineno_in
,(abfd
, ext1
, in1
),
632 LINENO
*ext
= (LINENO
*)ext1
;
633 struct internal_lineno
*in
= (struct internal_lineno
*)in1
;
635 in
->l_addr
.l_symndx
= bfd_h_get_32(abfd
, (bfd_byte
*) ext
->l_addr
.l_symndx
);
637 in
->l_lnno
= bfd_h_get_32(abfd
, (bfd_byte
*) ext
->l_lnno
);
639 in
->l_lnno
= bfd_h_get_16(abfd
, (bfd_byte
*) ext
->l_lnno
);
644 DEFUN(coff_swap_lineno_out
,(abfd
, in
, ext
),
646 struct internal_lineno
*in AND
647 struct external_lineno
*ext
)
649 PUTWORD(abfd
, in
->l_addr
.l_symndx
, (bfd_byte
*) ext
->l_addr
.l_symndx
);
651 PUTWORD(abfd
, in
->l_lnno
, (bfd_byte
*) ext
->l_lnno
);
653 PUTHALF(abfd
, in
->l_lnno
, (bfd_byte
*) ext
->l_lnno
);
661 DEFUN(bfd_swap_aouthdr_in
,(abfd
, aouthdr_ext1
, aouthdr_int1
),
666 AOUTHDR
*aouthdr_ext
= (AOUTHDR
*) aouthdr_ext1
;
667 struct internal_aouthdr
*aouthdr_int
= (struct internal_aouthdr
*)aouthdr_int1
;
669 aouthdr_int
->magic
= bfd_h_get_16(abfd
, (bfd_byte
*) aouthdr_ext
->magic
);
670 aouthdr_int
->vstamp
= bfd_h_get_16(abfd
, (bfd_byte
*) aouthdr_ext
->vstamp
);
671 aouthdr_int
->tsize
= bfd_h_get_32(abfd
, (bfd_byte
*) aouthdr_ext
->tsize
);
672 aouthdr_int
->dsize
= bfd_h_get_32(abfd
, (bfd_byte
*) aouthdr_ext
->dsize
);
673 aouthdr_int
->bsize
= bfd_h_get_32(abfd
, (bfd_byte
*) aouthdr_ext
->bsize
);
674 aouthdr_int
->entry
= bfd_h_get_32(abfd
, (bfd_byte
*) aouthdr_ext
->entry
);
675 aouthdr_int
->text_start
= bfd_h_get_32(abfd
, (bfd_byte
*) aouthdr_ext
->text_start
);
676 aouthdr_int
->data_start
= bfd_h_get_32(abfd
, (bfd_byte
*) aouthdr_ext
->data_start
);
678 aouthdr_int
->tagentries
= bfd_h_get_32(abfd
, (bfd_byte
*) aouthdr_ext
->tagentries
);
683 DEFUN(bfd_swap_aouthdr_out
,(abfd
, aouthdr_in
, aouthdr_out
),
685 struct internal_aouthdr
*aouthdr_in AND
686 AOUTHDR
*aouthdr_out
)
688 bfd_h_put_16(abfd
, aouthdr_in
->magic
, (bfd_byte
*) aouthdr_out
->magic
);
689 bfd_h_put_16(abfd
, aouthdr_in
->vstamp
, (bfd_byte
*) aouthdr_out
->vstamp
);
690 bfd_h_put_32(abfd
, aouthdr_in
->tsize
, (bfd_byte
*) aouthdr_out
->tsize
);
691 bfd_h_put_32(abfd
, aouthdr_in
->dsize
, (bfd_byte
*) aouthdr_out
->dsize
);
692 bfd_h_put_32(abfd
, aouthdr_in
->bsize
, (bfd_byte
*) aouthdr_out
->bsize
);
693 bfd_h_put_32(abfd
, aouthdr_in
->entry
, (bfd_byte
*) aouthdr_out
->entry
);
694 bfd_h_put_32(abfd
, aouthdr_in
->text_start
, (bfd_byte
*) aouthdr_out
->text_start
);
695 bfd_h_put_32(abfd
, aouthdr_in
->data_start
, (bfd_byte
*) aouthdr_out
->data_start
);
697 bfd_h_put_32(abfd
, aouthdr_in
->tagentries
, (bfd_byte
*) aouthdr_out
->tagentries
);
702 DEFUN(coff_swap_scnhdr_in
,(abfd
, scnhdr_ext
, scnhdr_int
),
704 SCNHDR
*scnhdr_ext AND
705 struct internal_scnhdr
*scnhdr_int
)
707 memcpy(scnhdr_int
->s_name
, scnhdr_ext
->s_name
, sizeof(scnhdr_int
->s_name
));
708 scnhdr_int
->s_vaddr
= bfd_h_get_32(abfd
, (bfd_byte
*) scnhdr_ext
->s_vaddr
);
709 scnhdr_int
->s_paddr
= bfd_h_get_32(abfd
, (bfd_byte
*) scnhdr_ext
->s_paddr
);
710 scnhdr_int
->s_size
= bfd_h_get_32(abfd
, (bfd_byte
*) scnhdr_ext
->s_size
);
711 scnhdr_int
->s_scnptr
= bfd_h_get_32(abfd
, (bfd_byte
*) scnhdr_ext
->s_scnptr
);
712 scnhdr_int
->s_relptr
= bfd_h_get_32(abfd
, (bfd_byte
*) scnhdr_ext
->s_relptr
);
713 scnhdr_int
->s_lnnoptr
= bfd_h_get_32(abfd
, (bfd_byte
*) scnhdr_ext
->s_lnnoptr
);
714 scnhdr_int
->s_flags
= bfd_h_get_32(abfd
, (bfd_byte
*) scnhdr_ext
->s_flags
);
716 scnhdr_int
->s_nreloc
= bfd_h_get_32(abfd
, (bfd_byte
*) scnhdr_ext
->s_nreloc
);
717 scnhdr_int
->s_nlnno
= bfd_h_get_32(abfd
, (bfd_byte
*) scnhdr_ext
->s_nlnno
);
719 scnhdr_int
->s_nreloc
= bfd_h_get_16(abfd
, (bfd_byte
*) scnhdr_ext
->s_nreloc
);
720 scnhdr_int
->s_nlnno
= bfd_h_get_16(abfd
, (bfd_byte
*) scnhdr_ext
->s_nlnno
);
723 scnhdr_int
->s_align
= bfd_h_get_32(abfd
, (bfd_byte
*) scnhdr_ext
->s_align
);
728 DEFUN(swap_scnhdr_out
,(abfd
, scnhdr_int
, scnhdr_ext
),
730 struct internal_scnhdr
*scnhdr_int AND
733 memcpy(scnhdr_ext
->s_name
, scnhdr_int
->s_name
, sizeof(scnhdr_int
->s_name
));
734 PUTWORD(abfd
, scnhdr_int
->s_vaddr
, (bfd_byte
*) scnhdr_ext
->s_vaddr
);
735 PUTWORD(abfd
, scnhdr_int
->s_paddr
, (bfd_byte
*) scnhdr_ext
->s_paddr
);
736 PUTWORD(abfd
, scnhdr_int
->s_size
, (bfd_byte
*) scnhdr_ext
->s_size
);
737 PUTWORD(abfd
, scnhdr_int
->s_scnptr
, (bfd_byte
*) scnhdr_ext
->s_scnptr
);
738 PUTWORD(abfd
, scnhdr_int
->s_relptr
, (bfd_byte
*) scnhdr_ext
->s_relptr
);
739 PUTWORD(abfd
, scnhdr_int
->s_lnnoptr
, (bfd_byte
*) scnhdr_ext
->s_lnnoptr
);
742 PUTWORD(abfd
, scnhdr_int
->s_nlnno
, (bfd_byte
*) scnhdr_ext
->s_nlnno
);
743 PUTWORD(abfd
, scnhdr_int
->s_flags
, (bfd_byte
*) scnhdr_ext
->s_flags
);
744 PUTWORD(abfd
, scnhdr_int
->s_nreloc
, (bfd_byte
*) scnhdr_ext
->s_nreloc
);
746 PUTHALF(abfd
, scnhdr_int
->s_nlnno
, (bfd_byte
*) scnhdr_ext
->s_nlnno
);
747 PUTHALF(abfd
, scnhdr_int
->s_flags
, (bfd_byte
*) scnhdr_ext
->s_flags
);
748 PUTHALF(abfd
, scnhdr_int
->s_nreloc
, (bfd_byte
*) scnhdr_ext
->s_nreloc
);
752 PUTWORD(abfd
, scnhdr_int
->s_align
, (bfd_byte
*) scnhdr_ext
->s_align
);
757 /* **********************************************************************/
758 /* Return a pointer to a malloc'd copy of 'name'. 'name' may not be
759 \0-terminated, but will not exceed 'maxlen' characters. The copy *will*
763 DEFUN(copy_name
,(abfd
, name
, maxlen
),
771 for (len
= 0; len
< maxlen
; ++len
) {
772 if (name
[len
] == '\0') {
777 if ((newname
= (PTR
) bfd_alloc(abfd
, len
+1)) == NULL
) {
778 bfd_error
= no_memory
;
781 strncpy(newname
, name
, len
);
787 initialize a section structure with information peculiar to this
788 particular implementation of coff
792 DEFUN(coff_new_section_hook
,(abfd_ignore
, section_ignore
),
794 asection
*section_ignore
)
796 section_ignore
->alignment_power
= abfd_ignore
->xvec
->align_power_min
;
800 /* Take a section header read from a coff file (in HOST byte order),
801 and make a BFD "section" out of it. */
803 DEFUN(make_a_section_from_file
,(abfd
, hdr
),
805 struct internal_scnhdr
*hdr
)
807 asection
*return_section
;
810 /* Assorted wastage to null-terminate the name, thanks AT&T! */
811 char *name
= bfd_alloc(abfd
, sizeof (hdr
->s_name
)+1);
813 bfd_error
= no_memory
;
816 strncpy(name
, (char *) &hdr
->s_name
[0], sizeof (hdr
->s_name
));
817 name
[sizeof (hdr
->s_name
)] = 0;
819 return_section
= bfd_make_section(abfd
, name
);
822 /* s_paddr is presumed to be = to s_vaddr */
823 #define assign(to, from) return_section->to = hdr->from
824 assign(vma
, s_vaddr
);
825 /* assign (vma, s_vaddr); */
826 assign(size
, s_size
);
827 assign(filepos
, s_scnptr
);
828 assign(rel_filepos
, s_relptr
);
829 assign(reloc_count
, s_nreloc
);
832 /* FIXME, use a temp var rather than alignment_power */
833 assign(alignment_power
, s_align
);
836 for (i
= 0; i
< 32; i
++) {
837 if ((1 << i
) >= (int) (return_section
->alignment_power
)) {
838 return_section
->alignment_power
= i
;
845 assign(line_filepos
, s_lnnoptr
);
847 return_section->linesize = hdr->s_nlnno * sizeof (struct lineno);
850 return_section
->lineno_count
= hdr
->s_nlnno
;
851 return_section
->userdata
= NULL
;
852 return_section
->next
= (asection
*) NULL
;
853 return_section
->flags
= styp_to_sec_flags(hdr
->s_flags
);
856 if (hdr
->s_nreloc
!= 0)
857 return_section
->flags
|= SEC_RELOC
;
858 /* FIXME: should this check 'hdr->s_size > 0' */
859 if (hdr
->s_scnptr
!= 0)
860 return_section
->flags
|= SEC_HAS_CONTENTS
;
864 DEFUN(coff_mkobject
,(abfd
),
867 set_tdata (abfd
, bfd_zalloc (abfd
,sizeof(coff_data_type
)));
868 if (coff_data(abfd
) == 0) {
869 bfd_error
= no_memory
;
872 coff_data(abfd
)->relocbase
= 0;
878 DEFUN(coff_real_object_p
,(abfd
, nscns
, internal_f
, internal_a
),
881 struct internal_filehdr
*internal_f AND
882 struct internal_aouthdr
*internal_a
)
884 coff_data_type
*coff
;
886 size_t readsize
; /* length of file_info */
887 SCNHDR
*external_sections
;
889 /* Build a play area */
890 if (coff_mkobject(abfd
) != true)
892 coff
= coff_data(abfd
);
895 external_sections
= (SCNHDR
*)bfd_alloc(abfd
, readsize
= (nscns
* SCNHSZ
));
897 if (bfd_read((PTR
)external_sections
, 1, readsize
, abfd
) != readsize
) {
902 /* Now copy data as required; construct all asections etc */
903 coff
->symbol_index_slew
= 0;
905 coff
->raw_syment_count
= 0;
906 coff
->raw_linenos
= 0;
907 coff
->raw_syments
= 0;
908 coff
->sym_filepos
=0;
909 coff
->flags
= internal_f
->f_flags
;
912 for (i
= 0; i
< nscns
; i
++) {
913 struct internal_scnhdr tmp
;
914 coff_swap_scnhdr_in(abfd
, external_sections
+ i
, &tmp
);
915 make_a_section_from_file(abfd
,&tmp
);
918 /* Determine the machine architecture and type. */
919 abfd
->obj_machine
= 0;
920 switch (internal_f
->f_magic
) {
923 abfd
->obj_arch
= bfd_arch_i386
;
924 abfd
->obj_machine
= 0;
928 #ifdef A29K_MAGIC_BIG
930 case A29K_MAGIC_LITTLE
:
931 abfd
->obj_arch
= bfd_arch_a29k
;
932 abfd
->obj_machine
= 0;
940 abfd
->obj_arch
= bfd_arch_mips
;
941 abfd
->obj_machine
= 0;
948 abfd
->obj_arch
= bfd_arch_m68k
;
949 abfd
->obj_machine
= 68020;
956 abfd
->obj_arch
= bfd_arch_m88k
;
957 abfd
->obj_machine
= 88100;
964 abfd
->obj_arch
= bfd_arch_i960
;
965 switch (F_I960TYPE
& internal_f
->f_flags
)
969 abfd
->obj_machine
= bfd_mach_i960_core
;
972 abfd
->obj_machine
= bfd_mach_i960_kb_sb
;
975 abfd
->obj_machine
= bfd_mach_i960_mc
;
978 abfd
->obj_machine
= bfd_mach_i960_xa
;
981 abfd
->obj_machine
= bfd_mach_i960_ca
;
984 abfd
->obj_machine
= bfd_mach_i960_ka_sa
;
992 default: /* Unreadable input file type */
993 abfd
->obj_arch
= bfd_arch_obscure
;
997 if (!(internal_f
->f_flags
& F_RELFLG
))
998 abfd
->flags
|= HAS_RELOC
;
999 if ((internal_f
->f_flags
& F_EXEC
))
1000 abfd
->flags
|= EXEC_P
;
1001 if (!(internal_f
->f_flags
& F_LNNO
))
1002 abfd
->flags
|= HAS_LINENO
;
1003 if (!(internal_f
->f_flags
& F_LSYMS
))
1004 abfd
->flags
|= HAS_LOCALS
;
1007 bfd_get_symcount(abfd
) = internal_f
->f_nsyms
;
1008 if (internal_f
->f_nsyms
)
1009 abfd
->flags
|= HAS_SYMS
;
1011 coff
->sym_filepos
= internal_f
->f_symptr
;
1015 coff
->symbols
= (coff_symbol_type
*) NULL
;
1016 bfd_get_start_address(abfd
) = internal_f
->f_opthdr
? internal_a
->entry
: 0;
1020 bfd_release(abfd
, coff
);
1021 return (bfd_target
*)NULL
;
1025 DEFUN(coff_object_p
,(abfd
),
1031 struct internal_filehdr internal_f
;
1032 struct internal_aouthdr internal_a
;
1034 bfd_error
= system_call_error
;
1036 /* figure out how much to read */
1037 if (bfd_read((PTR
) &filehdr
, 1, FILHSZ
, abfd
) != FILHSZ
)
1040 bfd_swap_filehdr_in(abfd
, &filehdr
, &internal_f
);
1042 if (BADMAG(internal_f
)) {
1043 bfd_error
= wrong_format
;
1046 nscns
=internal_f
.f_nscns
;
1048 if (internal_f
.f_opthdr
) {
1049 if (bfd_read((PTR
) &opthdr
, 1,AOUTSZ
, abfd
) != AOUTSZ
) {
1052 bfd_swap_aouthdr_in(abfd
, &opthdr
, &internal_a
);
1055 /* Seek past the opt hdr stuff */
1056 bfd_seek(abfd
, internal_f
.f_opthdr
+ FILHSZ
, SEEK_SET
);
1058 /* if the optional header is NULL or not the correct size then
1059 quit; the only difference I can see between m88k dgux headers (MC88DMAGIC)
1060 and Intel 960 readwrite headers (I960WRMAGIC) is that the
1061 optional header is of a different size.
1063 But the mips keeps extra stuff in it's opthdr, so dont check
1068 if (internal_f
.f_opthdr
!= 0 && AOUTSZ
!= internal_f
.f_opthdr
)
1069 return (bfd_target
*)NULL
;
1072 return coff_real_object_p(abfd
, nscns
, &internal_f
, &internal_a
);
1079 Takes a bfd and a symbol, returns a pointer to the coff specific area
1080 of the symbol if there is one.
1082 static coff_symbol_type
*
1083 DEFUN(coff_symbol_from
,(abfd
, symbol
),
1087 if (symbol
->the_bfd
->xvec
->flavour
!= bfd_target_coff_flavour_enum
)
1088 return (coff_symbol_type
*)NULL
;
1090 if (symbol
->the_bfd
->tdata
== (PTR
)NULL
)
1091 return (coff_symbol_type
*)NULL
;
1093 return (coff_symbol_type
*) symbol
;
1103 DEFUN(coff_count_linenumbers
,(abfd
),
1106 unsigned int limit
= bfd_get_symcount(abfd
);
1110 asection
*s
= abfd
->sections
->output_section
;
1112 BFD_ASSERT(s
->lineno_count
== 0);
1118 for (p
= abfd
->outsymbols
, i
= 0; i
< limit
; i
++, p
++) {
1119 asymbol
*q_maybe
= *p
;
1120 if (q_maybe
->the_bfd
->xvec
->flavour
== bfd_target_coff_flavour_enum
) {
1121 coff_symbol_type
*q
= coffsymbol(q_maybe
);
1124 This symbol has a linenumber, increment the owning
1125 section's linenumber count
1127 alent
*l
= q
->lineno
;
1128 q
->symbol
.section
->output_section
->lineno_count
++;
1130 while (l
->line_number
) {
1131 q
->symbol
.section
->output_section
->lineno_count
++;
1142 DEFUN(fixup_symbol_value
,(coff_symbol_ptr
, syment
),
1143 coff_symbol_type
*coff_symbol_ptr AND
1144 struct internal_syment
*syment
)
1147 /* Normalize the symbol flags */
1148 if (coff_symbol_ptr
->symbol
.flags
& BSF_FORT_COMM
) {
1149 /* a common symbol is undefined with a value */
1150 syment
->n_scnum
= N_UNDEF
;
1151 syment
->n_value
= coff_symbol_ptr
->symbol
.value
;
1153 else if (coff_symbol_ptr
->symbol
.flags
& BSF_DEBUGGING
) {
1154 syment
->n_value
= coff_symbol_ptr
->symbol
.value
;
1156 else if (coff_symbol_ptr
->symbol
.flags
& BSF_UNDEFINED
) {
1157 syment
->n_scnum
= N_UNDEF
;
1158 syment
->n_value
= 0;
1160 else if (coff_symbol_ptr
->symbol
.flags
& BSF_ABSOLUTE
) {
1161 syment
->n_scnum
= N_ABS
;
1162 syment
->n_value
= coff_symbol_ptr
->symbol
.value
;
1166 coff_symbol_ptr
->symbol
.section
->output_section
->index
+1;
1169 coff_symbol_ptr
->symbol
.value
+
1170 coff_symbol_ptr
->symbol
.section
->output_offset
+
1171 coff_symbol_ptr
->symbol
.section
->output_section
->vma
;
1175 /* run through all the symbols in the symbol table and work out what
1176 their indexes into the symbol table will be when output
1178 Coff requires that each C_FILE symbol points to the next one in the
1179 chain, and that the last one points to the first external symbol. We
1184 DEFUN(coff_renumber_symbols
,(bfd_ptr
),
1187 unsigned int symbol_count
= bfd_get_symcount(bfd_ptr
);
1188 asymbol
**symbol_ptr_ptr
= bfd_ptr
->outsymbols
;
1189 unsigned int native_index
= 0;
1190 struct internal_syment
*last_file
= (struct internal_syment
*)NULL
;
1191 unsigned int symbol_index
;
1192 for (symbol_index
= 0; symbol_index
< symbol_count
; symbol_index
++)
1194 coff_symbol_type
*coff_symbol_ptr
= coff_symbol_from(bfd_ptr
, symbol_ptr_ptr
[symbol_index
]);
1195 if (coff_symbol_ptr
&& coff_symbol_ptr
->native
) {
1196 combined_entry_type
*s
= coff_symbol_ptr
->native
;
1199 if (s
->u
.syment
.n_sclass
== C_FILE
)
1201 if (last_file
!= (struct internal_syment
*)NULL
) {
1202 last_file
->n_value
= native_index
;
1204 last_file
= &(s
->u
.syment
);
1208 /* Modify the symbol values according to their section and
1211 fixup_symbol_value(coff_symbol_ptr
, &(s
->u
.syment
));
1213 for (i
= 0; i
< s
->u
.syment
.n_numaux
+ 1; i
++) {
1214 s
[i
].offset
= native_index
++;
1225 Run thorough the symbol table again, and fix it so that all pointers to
1226 entries are changed to the entries' index in the output symbol table.
1230 DEFUN(coff_mangle_symbols
,(bfd_ptr
),
1233 unsigned int symbol_count
= bfd_get_symcount(bfd_ptr
);
1234 asymbol
**symbol_ptr_ptr
= bfd_ptr
->outsymbols
;
1236 unsigned int symbol_index
;
1239 for (symbol_index
= 0; symbol_index
< symbol_count
; symbol_index
++)
1241 coff_symbol_type
*coff_symbol_ptr
= coff_symbol_from(bfd_ptr
, symbol_ptr_ptr
[symbol_index
]);
1242 if (coff_symbol_ptr
&& coff_symbol_ptr
->native
) {
1244 combined_entry_type
*s
= coff_symbol_ptr
->native
;
1250 for (i
= 0; i
< s
->u
.syment
.n_numaux
; i
++) {
1251 combined_entry_type
*a
= s
+ i
+ 1;
1253 a
->u
.auxent
.x_sym
.x_tagndx
.l
= a
->u
.auxent
.x_sym
.x_tagndx
.p
->offset
;
1256 a
->u
.auxent
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
=
1257 a
->u
.auxent
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.p
->offset
;
1266 unsigned int symbol_count
= bfd_get_symcount(bfd_ptr
);
1267 asymbol
**symbol_ptr_ptr
= bfd_ptr
->outsymbols
;
1268 struct internal_syment
*last_tagndx
= (struct internal_syment
*)NULL
;
1269 struct internal_syment
*last_file
= (struct internal_syment
*)NULL
;
1270 struct internal_syment
*last_fcn
= (struct internal_syment
*)NULL
;
1271 struct internal_syment
*block_stack
[50];
1272 struct internal_syment
**last_block
= &block_stack
[0];
1273 boolean first_time
= true;
1274 unsigned int symbol_index
;
1275 unsigned int native_index
= 0;
1277 for (symbol_index
= 0; symbol_index
< symbol_count
; symbol_index
++) {
1278 coff_symbol_type
*coff_symbol_ptr
=
1279 coff_symbol_from(bfd_ptr
, symbol_ptr_ptr
[symbol_index
]);
1280 if (coff_symbol_ptr
== (coff_symbol_type
*)NULL
) {
1282 This symbol has no coff information in it, it will take up
1283 only one slot in the output symbol table
1288 struct internal_syment
*syment
= coff_symbol_ptr
->native
;
1289 if (syment
== (struct internal_syment
*)NULL
) {
1293 /* Normalize the symbol flags */
1294 if (coff_symbol_ptr
->symbol
.flags
& BSF_FORT_COMM
) {
1295 /* a common symbol is undefined with a value */
1296 syment
->n_scnum
= N_UNDEF
;
1297 syment
->n_value
= coff_symbol_ptr
->symbol
.value
;
1299 else if (coff_symbol_ptr
->symbol
.flags
& BSF_DEBUGGING
) {
1300 syment
->n_value
= coff_symbol_ptr
->symbol
.value
;
1302 else if (coff_symbol_ptr
->symbol
.flags
& BSF_UNDEFINED
) {
1303 syment
->n_scnum
= N_UNDEF
;
1304 syment
->n_value
= 0;
1306 else if (coff_symbol_ptr
->symbol
.flags
& BSF_ABSOLUTE
) {
1307 syment
->n_scnum
= N_ABS
;
1308 syment
->n_value
= coff_symbol_ptr
->symbol
.value
;
1312 coff_symbol_ptr
->symbol
.section
->output_section
->index
+1;
1315 coff_symbol_ptr
->symbol
.value
+
1316 coff_symbol_ptr
->symbol
.section
->output_offset
+
1317 coff_symbol_ptr
->symbol
.section
->output_section
->vma
;
1321 /* If this symbol ties up something then do it */
1323 if (syment
->n_sclass
== C_FILE
&& last_file
!= (struct internal_syment
*)NULL
)
1325 last_file
->n_value
= native_index
;
1327 else if ((syment
->n_sclass
== C_EXT
1328 || syment
->n_sclass
== C_STAT
1330 || syment
->n_sclass
== C_LEAFEXT
1331 || syment
->n_sclass
== C_LEAFSTAT
1334 && last_fcn
!= (struct internal_syment
*)NULL
)
1336 union internal_auxent
*auxent
= (union internal_auxent
*)(last_fcn
+1);
1337 auxent
->x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
= native_index
;
1338 last_fcn
= (struct internal_syment
*)NULL
;
1341 else if (syment
->n_sclass
== C_EOS
&& last_tagndx
!= (struct internal_syment
*)NULL
)
1343 union internal_auxent
*auxent
= (union internal_auxent
*)(last_tagndx
+1);
1344 /* Remember that we keep the native index in the offset
1345 so patch the beginning of the struct to point to this
1348 auxent->x_sym.x_tagndx = last_tagndx->_n._n_n._n_offset;*/
1349 auxent
->x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
= syment
->n_numaux
+ 1 + native_index
;
1350 /* Now point the eos to the structure */
1351 auxent
= (union internal_auxent
*)(syment
+1);
1352 auxent
->x_sym
.x_tagndx
.l
= last_tagndx
->_n
._n_n
._n_offset
;
1354 else if (syment
->n_sclass
== C_BLOCK
1355 && coff_symbol_ptr
->symbol
.name
[1] == 'e')
1357 union internal_auxent
*auxent
= (union internal_auxent
*)((*(--last_block
))+1);
1358 auxent
->x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
= native_index
+ syment
->n_numaux
+ 1;
1360 if (syment
->n_sclass
== C_EXT
1361 && !ISFCN(syment
->n_type
)
1362 && first_time
== true
1363 && last_file
!= (struct internal_syment
*)NULL
) {
1364 /* This is the first external symbol seen which isn't a
1365 function place it in the last .file entry */
1366 last_file
->n_value
= native_index
;
1370 if (syment
->n_sclass
== C_LEAFPROC
&&
1371 syment
->n_numaux
== 2) {
1372 union internal_auxent
*auxent
= (union internal_auxent
*)(syment
+2);
1373 /* This is the definition of a leaf proc, we'll relocate the
1375 auxent
->x_bal
.x_balntry
=
1376 coff_symbol_ptr
->symbol
.section
->output_offset
+
1377 coff_symbol_ptr
->symbol
.section
->output_section
->vma
+
1378 auxent
->x_bal
.x_balntry
;
1381 /* If this symbol needs to be tied up then remember some facts */
1382 if (syment
->n_sclass
== C_FILE
)
1386 if (syment
->n_numaux
!= 0) {
1388 If this symbol would like to point to something in the
1389 future then remember where it is
1391 if (uses_x_sym_x_tagndx_p(bfd_ptr
, syment
)) {
1393 If this is a ref to a structure then we'll tie it up
1394 now - there are never any forward refs for one
1396 if (syment
->n_sclass
== C_STRTAG
||
1397 syment
->n_sclass
== C_ENTAG
||
1398 syment
->n_sclass
== C_UNTAG
) {
1399 last_tagndx
= syment
;
1403 This is a ref to a structure - the structure must
1404 have been defined within the same file, and previous
1405 to this point, so we can deduce the new tagndx
1408 union internal_auxent
*auxent
= (union internal_auxent
*)(syment
+1);
1409 bfd
*bfd_ptr
= coff_symbol_ptr
->symbol
.the_bfd
;
1410 struct internal_syment
*base
= obj_raw_syments(bfd_ptr
);
1411 /* auxent->x_sym.x_tagndx = base[auxent->x_sym.x_tagndx]._n._n_n._n_offset;*/
1416 if (ISFCN(syment
->n_type
)) {
1419 if (syment
->n_sclass
== C_BLOCK
1420 && coff_symbol_ptr
->symbol
.name
[1] == 'b')
1422 *last_block
++ = syment
;
1425 syment
->_n
._n_n
._n_offset
= native_index
;
1426 native_index
= native_index
+ 1 + syment
->n_numaux
;
1434 static int string_size
;
1436 DEFUN(coff_fix_symbol_name
,(abfd
, symbol
, native
),
1439 combined_entry_type
*native
)
1441 unsigned int name_length
;
1442 union internal_auxent
*auxent
;
1443 char * name
= ( char *)(symbol
->name
);
1445 if (name
== (char *) NULL
) {
1447 coff symbols always have names, so we'll make one up
1449 symbol
->name
= "strange";
1450 name
= (char *)symbol
->name
;
1452 name_length
= strlen(name
);
1454 if (native
->u
.syment
.n_sclass
== C_FILE
) {
1455 strncpy(native
->u
.syment
._n
._n_name
, ".file", SYMNMLEN
);
1456 auxent
= &(native
+1)->u
.auxent
;
1458 #ifdef COFF_LONG_FILENAMES
1459 if (name_length
<= FILNMLEN
) {
1460 strncpy(auxent
->x_file
.x_fname
, name
, FILNMLEN
);
1463 auxent
->x_file
.x_n
.x_offset
= string_size
+ 4;
1464 auxent
->x_file
.x_n
.x_zeroes
= 0;
1465 string_size
+= name_length
+ 1;
1468 strncpy(auxent
->x_file
.x_fname
, name
, FILNMLEN
);
1469 if (name_length
> FILNMLEN
) {
1470 name
[FILNMLEN
] = '\0';
1475 { /* NOT A C_FILE SYMBOL */
1476 if (name_length
<= SYMNMLEN
) {
1477 /* This name will fit into the symbol neatly */
1478 strncpy(native
->u
.syment
._n
._n_name
, symbol
->name
, SYMNMLEN
);
1481 native
->u
.syment
._n
._n_n
._n_offset
= string_size
+ 4;
1482 native
->u
.syment
._n
._n_n
._n_zeroes
= 0;
1483 string_size
+= name_length
+ 1;
1491 DEFUN(coff_write_symbol
,(abfd
, symbol
, native
, written
),
1494 combined_entry_type
*native AND
1495 unsigned int written
)
1497 unsigned int numaux
= native
->u
.syment
.n_numaux
;
1498 int type
= native
->u
.syment
.n_type
;
1499 int class = native
->u
.syment
.n_sclass
;
1503 coff_fix_symbol_name(abfd
, symbol
, native
);
1504 coff_swap_sym_out(abfd
, &native
->u
.syment
, &buf
);
1505 bfd_write((PTR
)& buf
, 1, SYMESZ
, abfd
);
1506 for (j
= 0; j
!= native
->u
.syment
.n_numaux
; j
++)
1509 coff_swap_aux_out(abfd
,
1510 &( (native
+ j
+ 1)->u
.auxent
), type
, class, &buf1
);
1511 bfd_write((PTR
) (&buf1
), 1, AUXESZ
, abfd
);
1514 Reuse somewhere in the symbol to keep the index
1516 set_index(symbol
, written
);
1517 return written
+ 1 + numaux
;
1522 DEFUN(coff_write_alien_symbol
,(abfd
, symbol
, written
),
1525 unsigned int written
)
1528 This symbol has been created by the loader, or come from a non
1529 coff format. It has no native element to inherit, make our
1532 combined_entry_type
*native
;
1533 combined_entry_type dummy
;
1535 native
->u
.syment
.n_type
= T_NULL
;
1537 native
->u
.syment
.n_flags
= 0;
1539 if (symbol
->flags
& BSF_ABSOLUTE
) {
1540 native
->u
.syment
.n_scnum
= N_ABS
;
1541 native
->u
.syment
.n_value
= symbol
->value
;
1543 else if (symbol
->flags
& (BSF_UNDEFINED
| BSF_FORT_COMM
)) {
1544 native
->u
.syment
.n_scnum
= N_UNDEF
;
1545 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
->index
+
1556 native
->u
.syment
.n_value
= symbol
->value
+
1557 symbol
->section
->output_section
->vma
+
1558 symbol
->section
->output_offset
;
1560 /* Copy the any flags from the the file hdr into the symbol */
1562 coff_symbol_type
*c
= coff_symbol_from(abfd
, symbol
);
1563 if (c
!= (coff_symbol_type
*)NULL
) {
1564 native
->u
.syment
.n_flags
= c
->symbol
.the_bfd
->flags
;
1571 native
->u
.syment
.pad1
[0] = 0;
1572 native
->u
.syment
.pad1
[0] = 0;
1575 native
->u
.syment
.n_type
= 0;
1576 if (symbol
->flags
& BSF_LOCAL
)
1577 native
->u
.syment
.n_sclass
= C_STAT
;
1579 native
->u
.syment
.n_sclass
= C_EXT
;
1580 native
->u
.syment
.n_numaux
= 0;
1582 return coff_write_symbol(abfd
, symbol
, native
, written
);
1586 DEFUN(coff_write_native_symbol
,(abfd
, symbol
, written
),
1588 coff_symbol_type
*symbol AND
1589 unsigned int written
)
1592 Does this symbol have an ascociated line number - if so then
1593 make it remember this symbol index. Also tag the auxent of
1594 this symbol to point to the right place in the lineno table
1596 combined_entry_type
*native
= symbol
->native
;
1598 alent
*lineno
= symbol
->lineno
;
1601 unsigned int count
= 0;
1602 lineno
[count
].u
.offset
= written
;
1603 if (native
->u
.syment
.n_numaux
) {
1604 union internal_auxent
*a
= &((native
+1)->u
.auxent
);
1606 a
->x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
=
1607 symbol
->symbol
.section
->output_section
->moving_line_filepos
;
1610 And count and relocate all other linenumbers
1613 while (lineno
[count
].line_number
) {
1614 lineno
[count
].u
.offset
+=
1615 symbol
->symbol
.section
->output_section
->vma
+
1616 symbol
->symbol
.section
->output_offset
;
1619 symbol
->symbol
.section
->output_section
->moving_line_filepos
+=
1623 return coff_write_symbol(abfd
, &( symbol
->symbol
), native
,written
);
1627 DEFUN(coff_write_symbols
,(abfd
),
1631 unsigned int limit
= bfd_get_symcount(abfd
);
1632 unsigned int written
= 0;
1639 /* Seek to the right place */
1640 bfd_seek(abfd
, obj_sym_filepos(abfd
), SEEK_SET
);
1642 /* Output all the symbols we have */
1645 for (p
= abfd
->outsymbols
, i
= 0; i
< limit
; i
++, p
++)
1647 asymbol
*symbol
= *p
;
1648 coff_symbol_type
*c_symbol
= coff_symbol_from(abfd
, symbol
);
1652 if (c_symbol
== (coff_symbol_type
*) NULL
||
1653 c_symbol
->native
== (combined_entry_type
*)NULL
)
1655 written
= coff_write_alien_symbol(abfd
, symbol
, written
);
1659 written
= coff_write_native_symbol(abfd
, c_symbol
, written
);
1664 bfd_get_symcount(abfd
) = written
;
1666 /* Now write out strings */
1668 if (string_size
!= 0)
1670 unsigned int size
= string_size
+ 4;
1672 bfd_write((PTR
) &size
, 1, sizeof(size
), abfd
);
1673 for (p
= abfd
->outsymbols
, i
= 0; i
< limit
; i
++, p
++)
1676 size_t name_length
= strlen(q
->name
);
1678 coff_symbol_type
* c_symbol
= coff_symbol_from(abfd
, q
);
1679 maxlen
= ((c_symbol
!= NULL
&& c_symbol
->native
!= NULL
) && (c_symbol
->native
->u
.syment
.n_sclass
== C_FILE
)) ?
1680 FILNMLEN
: SYMNMLEN
;
1682 if (name_length
> maxlen
) {
1683 bfd_write((PTR
) (q
->name
), 1, name_length
+ 1, abfd
);
1688 /* We would normally not write anything here, but we'll write
1689 out 4 so that any stupid coff reader which tries to read
1690 the string table even when there isn't one won't croak.
1693 uint32e_type size
= 4;
1695 bfd_write((PTR
)&size
, 1, sizeof(size
), abfd
);
1700 @subsubsection Writing Relocations
1701 To write a relocations, all the back end does is step though the
1702 canonical relocation table, and create an @code{internal_reloc}. The
1703 symbol index to use is removed from the @code{offset} field in the
1704 symbol table supplied, the address comes directly from the sum of the
1705 section base address and the relocation offset and the type is dug
1706 directly from the howto field.
1708 Then the @code{internal_reloc} is swapped into the shape of an
1709 @code{external_reloc} and written out to disk.
1713 DEFUN(coff_write_relocs
,(abfd
),
1717 for (s
= abfd
->sections
; s
!= (asection
*) NULL
; s
= s
->next
) {
1719 struct external_reloc dst
;
1721 arelent
**p
= s
->orelocation
;
1722 bfd_seek(abfd
, s
->rel_filepos
, SEEK_SET
);
1723 for (i
= 0; i
< s
->reloc_count
; i
++) {
1724 struct internal_reloc n
;
1726 memset((PTR
)&n
, 0, sizeof(n
));
1727 n
.r_vaddr
= q
->address
+ s
->vma
;
1728 if (q
->sym_ptr_ptr
) {
1729 n
.r_symndx
= get_index((*(q
->sym_ptr_ptr
)));
1732 /* Work out reloc type from what is required */
1733 SELECT_RELOC(n
.r_type
, q
->howto
);
1735 n
.r_type
= q
->howto
->type
;
1737 bfd_swap_reloc_out(abfd
, &n
, &dst
);
1738 bfd_write((PTR
) &n
, 1, RELSZ
, abfd
);
1744 DEFUN(coff_write_linenumbers
,(abfd
),
1748 for (s
= abfd
->sections
; s
!= (asection
*) NULL
; s
= s
->next
) {
1749 if (s
->lineno_count
) {
1750 asymbol
**q
= abfd
->outsymbols
;
1751 bfd_seek(abfd
, s
->line_filepos
, SEEK_SET
);
1752 /* Find all the linenumbers in this section */
1755 alent
*l
= BFD_SEND(p
->the_bfd
, _get_lineno
, (p
->the_bfd
, p
));
1757 /* Found a linenumber entry, output */
1758 struct internal_lineno out
;
1760 memset( (PTR
)&out
, 0, sizeof(out
));
1762 out
.l_addr
.l_symndx
= l
->u
.offset
;
1763 coff_swap_lineno_out(abfd
, &out
, &buff
);
1764 bfd_write((PTR
) &buff
, 1, LINESZ
, abfd
);
1766 while (l
->line_number
) {
1767 out
.l_lnno
= l
->line_number
;
1768 out
.l_addr
.l_symndx
= l
->u
.offset
;
1769 coff_swap_lineno_out(abfd
, &out
, &buff
);
1770 bfd_write((PTR
) &buff
, 1, LINESZ
, abfd
);
1782 coff_make_empty_symbol(abfd
)
1785 coff_symbol_type
*new = (coff_symbol_type
*) bfd_alloc(abfd
, sizeof(coff_symbol_type
));
1787 bfd_error
= no_memory
;
1791 new->lineno
= (alent
*) NULL
;
1792 new->symbol
.the_bfd
= abfd
;
1793 return &new->symbol
;
1797 DEFUN(coff_print_symbol
,(ignore_abfd
, filep
, symbol
, how
),
1798 bfd
*ignore_abfd AND
1801 bfd_print_symbol_enum_type how
)
1803 FILE *file
= (FILE *)filep
;
1805 case bfd_print_symbol_name_enum
:
1806 fprintf(file
, "%s", symbol
->name
);
1808 case bfd_print_symbol_type_enum
:
1809 fprintf(file
, "coff %lx %lx", (unsigned long) coffsymbol(symbol
)->native
,
1810 (unsigned long) coffsymbol(symbol
)->lineno
);
1812 case bfd_print_symbol_all_enum
:
1814 CONST
char *section_name
= symbol
->section
== (asection
*) NULL
?
1815 "*abs" : symbol
->section
->name
;
1816 bfd_print_symbol_vandf((PTR
) file
, symbol
);
1818 fprintf(file
, " %-5s %s %s %s",
1820 coffsymbol(symbol
)->native
? "n" : "g",
1821 coffsymbol(symbol
)->lineno
? "l" : " ",
1831 DEFUN(coff_get_lineno
,(ignore_abfd
, symbol
),
1832 bfd
*ignore_abfd AND
1835 return coffsymbol(symbol
)->lineno
;
1839 Set flags and magic number of a coff file from architecture and machine
1840 type. Result is true if we can represent the arch&type, false if not.
1843 DEFUN(coff_set_flags
,(abfd
, magicp
, flagsp
),
1845 unsigned *magicp AND
1846 unsigned short *flagsp
)
1849 switch (abfd
->obj_arch
) {
1857 *magicp
= I960ROMAGIC
;
1859 ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC :
1860 I960RWMAGIC); FIXME???
1862 switch (abfd
->obj_machine
) {
1863 case bfd_mach_i960_core
:
1866 case bfd_mach_i960_kb_sb
:
1869 case bfd_mach_i960_mc
:
1872 case bfd_mach_i960_xa
:
1875 case bfd_mach_i960_ca
:
1878 case bfd_mach_i960_ka_sa
:
1891 *magicp
= MIPS_MAGIC_2
;
1897 *magicp
= I386MAGIC
;
1902 *magicp
= MC68MAGIC
;
1908 *magicp
= MC88OMAGIC
;
1913 #ifdef A29K_MAGIC_BIG
1915 if (abfd
->xvec
->byteorder_big_p
)
1916 *magicp
= A29K_MAGIC_BIG
;
1918 *magicp
= A29K_MAGIC_LITTLE
;
1923 default: /* Unknown architecture */
1924 /* return false; -- fall through to "return false" below, to avoid
1925 "statement never reached" errors on the one below. */
1934 DEFUN(coff_set_arch_mach
,(abfd
, arch
, machine
),
1936 enum bfd_architecture arch AND
1937 unsigned long machine
)
1940 unsigned short dummy2
;
1941 abfd
->obj_arch
= arch
;
1942 abfd
->obj_machine
= machine
;
1943 if (arch
!= bfd_arch_unknown
&&
1944 coff_set_flags(abfd
, &dummy1
, &dummy2
) != true)
1945 return false; /* We can't represent this type */
1946 return true; /* We're easy ... */
1950 /* Calculate the file position for each section. */
1953 DEFUN(coff_compute_section_file_positions
,(abfd
),
1957 file_ptr sofar
= FILHSZ
;
1958 if (bfd_get_start_address(abfd
)) {
1960 A start address may have been added to the original file. In this
1961 case it will need an optional header to record it.
1963 abfd
->flags
|= EXEC_P
;
1965 if (abfd
->flags
& EXEC_P
)
1969 sofar
+= abfd
->section_count
* SCNHSZ
;
1970 for (current
= abfd
->sections
;
1971 current
!= (asection
*)NULL
;
1972 current
= current
->next
) {
1973 /* Only deal with sections which have contents */
1974 if (!(current
->flags
& SEC_HAS_CONTENTS
))
1977 /* Align the sections in the file to the same boundary on
1978 which they are aligned in virtual memory. I960 doesn't
1979 do this (FIXME) so we can stay in sync with Intel. 960
1980 doesn't yet page from files... */
1982 sofar
= ALIGN(sofar
, 1 << current
->alignment_power
);
1984 /* FIXME, in demand paged files, the low order bits of the file
1985 offset must match the low order bits of the virtual address.
1986 "Low order" is apparently implementation defined. Add code
1987 here to round sofar up to match the virtual address. */
1989 current
->filepos
= sofar
;
1990 sofar
+= current
->size
;
1992 obj_relocbase(abfd
) = sofar
;
2001 DEFUN(coff_write_object_contents
,(abfd
),
2005 boolean hasrelocs
= false;
2006 boolean haslinno
= false;
2007 file_ptr reloc_base
;
2008 file_ptr lineno_base
;
2012 unsigned long reloc_size
= 0;
2013 unsigned long lnno_size
= 0;
2014 asection
*text_sec
= NULL
;
2015 asection
*data_sec
= NULL
;
2016 asection
*bss_sec
= NULL
;
2018 struct internal_filehdr internal_f
;
2019 struct internal_aouthdr internal_a
;
2022 bfd_error
= system_call_error
;
2025 if(abfd
->output_has_begun
== false) {
2026 coff_compute_section_file_positions(abfd
);
2029 if (abfd
->sections
!= (asection
*)NULL
) {
2030 scn_base
= abfd
->sections
->filepos
;
2035 if (bfd_seek(abfd
, scn_base
, SEEK_SET
) != 0)
2037 reloc_base
= obj_relocbase(abfd
);
2039 /* Make a pass through the symbol table to count line number entries and
2040 put them into the correct asections */
2042 coff_count_linenumbers(abfd
);
2043 data_base
= scn_base
;
2045 /* Work out the size of the reloc and linno areas */
2047 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
) {
2048 reloc_size
+= current
->reloc_count
* RELSZ
;
2049 lnno_size
+= current
->lineno_count
* LINESZ
;
2050 data_base
+= SCNHSZ
;
2053 lineno_base
= reloc_base
+ reloc_size
;
2054 sym_base
= lineno_base
+ lnno_size
;
2056 /* Indicate in each section->line_filepos its actual file address */
2057 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
) {
2058 if (current
->lineno_count
) {
2059 current
->line_filepos
= lineno_base
;
2060 current
->moving_line_filepos
= lineno_base
;
2061 lineno_base
+= current
->lineno_count
* LINESZ
;
2064 current
->line_filepos
= 0;
2066 if (current
->reloc_count
) {
2067 current
->rel_filepos
= reloc_base
;
2068 reloc_base
+= current
->reloc_count
* sizeof(struct internal_reloc
);
2071 current
->rel_filepos
= 0;
2075 /* Write section headers to the file. */
2078 (file_ptr
) ((abfd
->flags
& EXEC_P
) ?
2079 (FILHSZ
+ AOUTSZ
) : FILHSZ
),
2084 unsigned int pad
= abfd
->flags
& D_PAGED
? data_base
: 0;
2086 unsigned int pad
= 0;
2088 for (current
= abfd
->sections
; current
!= NULL
; current
= current
->next
) {
2089 struct internal_scnhdr section
;
2090 strncpy(&(section
.s_name
[0]), current
->name
, 8);
2091 section
.s_vaddr
= current
->vma
+ pad
;
2092 section
.s_paddr
= current
->vma
+ pad
;
2093 section
.s_size
= current
->size
- pad
;
2095 If this section has no size or is unloadable then the scnptr
2098 if (current
->size
- pad
== 0 ||
2099 (current
->flags
& SEC_LOAD
) == 0) {
2100 section
.s_scnptr
= 0;
2104 section
.s_scnptr
= current
->filepos
;
2106 section
.s_relptr
= current
->rel_filepos
;
2107 section
.s_lnnoptr
= current
->line_filepos
;
2108 section
.s_nreloc
= current
->reloc_count
;
2109 section
.s_nlnno
= current
->lineno_count
;
2110 if (current
->reloc_count
!= 0)
2112 if (current
->lineno_count
!= 0)
2115 section
.s_flags
= sec_to_styp_flags(current
->name
,current
->flags
);
2117 if (!strcmp(current
->name
, _TEXT
)) {
2119 } else if (!strcmp(current
->name
, _DATA
)) {
2121 } else if (!strcmp(current
->name
, _BSS
)) {
2126 section
.s_align
= (current
->alignment_power
2127 ? 1 << current
->alignment_power
2134 swap_scnhdr_out(abfd
, §ion
, &buff
);
2135 bfd_write((PTR
) (&buff
), 1, SCNHSZ
, abfd
);
2142 /* OK, now set up the filehdr... */
2143 internal_f
.f_nscns
= abfd
->section_count
;
2145 We will NOT put a fucking timestamp in the header here. Every time you
2146 put it back, I will come in and take it out again. I'm sorry. This
2147 field does not belong here. We fill it with a 0 so it compares the
2148 same but is not a reasonable time. -- gnu@cygnus.com
2151 Well, I like it, so I'm conditionally compiling it in.
2154 #ifdef COFF_TIMESTAMP
2155 internal_f
.f_timdat
= time(0);
2157 internal_f
.f_timdat
= 0;
2160 if (bfd_get_symcount(abfd
) != 0)
2161 internal_f
.f_symptr
= sym_base
;
2163 internal_f
.f_symptr
= 0;
2165 internal_f
.f_flags
= 0;
2167 if (abfd
->flags
& EXEC_P
)
2168 internal_f
.f_opthdr
= AOUTSZ
;
2170 internal_f
.f_opthdr
= 0;
2173 internal_f
.f_flags
|= F_RELFLG
;
2175 internal_f
.f_flags
|= F_LNNO
;
2176 if (0 == bfd_get_symcount(abfd
))
2177 internal_f
.f_flags
|= F_LSYMS
;
2178 if (abfd
->flags
& EXEC_P
)
2179 internal_f
.f_flags
|= F_EXEC
;
2181 internal_f
.f_flags
|= F_AR32W
;
2183 if (!abfd
->xvec
->byteorder_big_p
)
2184 internal_f
.f_flags
|= F_AR32WR
;
2187 FIXME, should do something about the other byte orders and
2191 /* Set up architecture-dependent stuff */
2193 { unsigned int magic
= 0;
2194 unsigned short flags
= 0;
2195 coff_set_flags(abfd
, &magic
, &flags
);
2196 internal_f
.f_magic
= magic
;
2197 internal_f
.f_flags
= flags
;
2198 /* ...and the "opt"hdr... */
2201 # ifdef ULTRA3 /* NYU's machine */
2202 /* FIXME: This is a bogus check. I really want to see if there
2203 * is a .shbss or a .shdata section, if so then set the magic
2204 * number to indicate a shared data executable.
2206 if (internal_f
.f_nscns
>= 7)
2207 internal_a
.magic
= SHMAGIC
; /* Shared magic */
2209 # endif /* ULTRA3 */
2210 internal_a
.magic
= NMAGIC
; /* Assume separate i/d */
2211 #define __A_MAGIC_SET__
2214 internal_a
.magic
= (magic
== I960ROMAGIC
? NMAGIC
: OMAGIC
);
2215 #define __A_MAGIC_SET__
2218 #define __A_MAGIC_SET__
2219 internal_a
.magic
= PAGEMAGICBCS
;
2222 #if M68 || I386 || MIPS
2223 #define __A_MAGIC_SET__
2224 /* Never was anything here for the 68k */
2227 #ifndef __A_MAGIC_SET__
2228 # include "Your aouthdr magic number is not being set!"
2230 # undef __A_MAGIC_SET__
2233 /* Now should write relocs, strings, syms */
2234 obj_sym_filepos(abfd
) = sym_base
;
2236 if (bfd_get_symcount(abfd
) != 0) {
2237 coff_renumber_symbols(abfd
);
2238 coff_mangle_symbols(abfd
);
2239 coff_write_symbols(abfd
);
2240 coff_write_linenumbers(abfd
);
2241 coff_write_relocs(abfd
);
2244 internal_a
.tsize
= text_sec
->size
;
2245 internal_a
.text_start
=text_sec
->size
? text_sec
->vma
: 0;
2248 internal_a
.dsize
= data_sec
->size
;
2249 internal_a
.data_start
= data_sec
->size
? data_sec
->vma
: 0;
2252 internal_a
.bsize
= bss_sec
->size
;
2255 internal_a
.entry
= bfd_get_start_address(abfd
);
2256 internal_f
.f_nsyms
= bfd_get_symcount(abfd
);
2258 /* now write them */
2259 if (bfd_seek(abfd
, 0L, SEEK_SET
) != 0)
2263 bfd_swap_filehdr_out(abfd
, &internal_f
, &buff
);
2264 bfd_write((PTR
) &buff
, 1, FILHSZ
, abfd
);
2266 if (abfd
->flags
& EXEC_P
) {
2268 bfd_swap_aouthdr_out(abfd
, &internal_a
, &buff
);
2269 bfd_write((PTR
) &buff
, 1, AOUTSZ
, abfd
);
2275 this function transforms the offsets into the symbol table into
2276 pointers to syments.
2281 DEFUN(coff_pointerize_aux
,(abfd
, table_base
, type
, class, auxent
),
2283 combined_entry_type
*table_base AND
2286 combined_entry_type
*auxent
)
2288 /* Don't bother if this is a file or a section */
2289 if (class == C_STAT
&& type
== T_NULL
) return;
2290 if (class == C_FILE
) return;
2292 /* Otherwise patch up */
2293 if (ISFCN(type
) || ISTAG(class) || class == C_BLOCK
) {
2294 auxent
->u
.auxent
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.p
= table_base
+
2295 auxent
->u
.auxent
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
;
2296 auxent
->fix_end
= 1;
2298 if (auxent
->u
.auxent
.x_sym
.x_tagndx
.l
!= 0) {
2299 auxent
->u
.auxent
.x_sym
.x_tagndx
.p
= table_base
+ auxent
->u
.auxent
.x_sym
.x_tagndx
.l
;
2300 auxent
->fix_tag
= 1;
2308 DEFUN(coff_set_section_contents
,(abfd
, section
, location
, offset
, count
),
2313 bfd_size_type count
)
2315 if (abfd
->output_has_begun
== false) /* set by bfd.c handler */
2316 coff_compute_section_file_positions(abfd
);
2318 bfd_seek(abfd
, (file_ptr
) (section
->filepos
+ offset
), SEEK_SET
);
2321 return (bfd_write(location
, 1, count
, abfd
) == count
) ? true : false;
2327 coff_close_and_cleanup(abfd
)
2330 if (!bfd_read_p(abfd
))
2331 switch (abfd
->format
) {
2333 if (!_bfd_write_archive_contents(abfd
))
2337 if (!coff_write_object_contents(abfd
))
2341 bfd_error
= invalid_operation
;
2345 /* We depend on bfd_close to free all the memory on the obstack. */
2346 /* FIXME if bfd_release is not using obstacks! */
2352 buy_and_read(abfd
, where
, seek_direction
, size
)
2358 PTR area
= (PTR
) bfd_alloc(abfd
, size
);
2360 bfd_error
= no_memory
;
2363 bfd_seek(abfd
, where
, seek_direction
);
2364 if (bfd_read(area
, 1, size
, abfd
) != size
) {
2365 bfd_error
= system_call_error
;
2369 } /* buy_and_read() */
2374 DEFUN(build_string_table
,(abfd
),
2377 char string_table_size_buffer
[4];
2378 unsigned int string_table_size
;
2381 At this point we should be "seek"'d to the end of the
2382 symbols === the symbol table size.
2385 if (bfd_read((char *) string_table_size_buffer
,
2386 sizeof(string_table_size_buffer
),
2387 1, abfd
) != sizeof(string_table_size
)) {
2388 bfd_error
= system_call_error
;
2392 string_table_size
= bfd_h_get_32(abfd
, (bfd_byte
*) string_table_size_buffer
);
2394 if ((string_table
= (PTR
) bfd_alloc(abfd
, string_table_size
-= 4)) == NULL
) {
2395 bfd_error
= no_memory
;
2397 } /* on mallocation error */
2398 if (bfd_read(string_table
, string_table_size
, 1, abfd
) != string_table_size
) {
2399 bfd_error
= system_call_error
;
2402 return string_table
;
2406 read a symbol table into freshly mallocated memory, swap it, and knit the
2407 symbol names into a normalized form. By normalized here I mean that all
2408 symbols have an n_offset pointer that points to a NULL terminated string.
2409 Oh, and the first symbol MUST be a C_FILE. If there wasn't one there
2410 before, put one there.
2413 static combined_entry_type
*
2414 DEFUN(get_normalized_symtab
,(abfd
),
2418 combined_entry_type
*internal
;
2419 combined_entry_type
*internal_ptr
;
2420 combined_entry_type
*internal_end
;
2424 char *string_table
= NULL
;
2428 unsigned int raw_size
;
2429 if (obj_raw_syments(abfd
) != (combined_entry_type
*)NULL
) {
2430 return obj_raw_syments(abfd
);
2432 if ((size
= bfd_get_symcount(abfd
) * sizeof(combined_entry_type
)) == 0) {
2433 bfd_error
= no_symbols
;
2437 internal
= (combined_entry_type
*)bfd_alloc(abfd
, size
);
2438 internal_end
= internal
+ bfd_get_symcount(abfd
);
2440 raw_size
= bfd_get_symcount(abfd
) * SYMESZ
;
2441 raw
= (SYMENT
*)bfd_alloc(abfd
,raw_size
);
2443 if (bfd_seek(abfd
, obj_sym_filepos(abfd
), SEEK_SET
) == -1
2444 || bfd_read((PTR
)raw
, raw_size
, 1, abfd
) != raw_size
) {
2445 bfd_error
= system_call_error
;
2448 /* mark the end of the symbols */
2449 raw_end
= raw
+ bfd_get_symcount(abfd
);
2451 FIXME SOMEDAY. A string table size of zero is very weird, but
2452 probably possible. If one shows up, it will probably kill us.
2455 /* Swap all the raw entries */
2456 for (raw_src
= raw
, internal_ptr
= internal
; raw_src
< raw_end
; raw_src
++, internal_ptr
++) {
2458 coff_swap_sym_in(abfd
, raw_src
,&internal_ptr
->u
.syment
);
2459 internal_ptr
->fix_tag
= 0;
2460 internal_ptr
->fix_end
= 0;
2462 for (i
= internal_ptr
->u
.syment
.n_numaux
; i
; --i
, raw_src
++, internal_ptr
++) {
2463 (internal_ptr
+1)->fix_tag
= 0;
2464 (internal_ptr
+1)->fix_end
= 0;
2466 coff_swap_aux_in(abfd
, (AUXENT
*)(raw_src
+1), internal_ptr
->u
.syment
.n_type
,
2467 internal_ptr
->u
.syment
.n_sclass
, & (internal_ptr
+1)->u
.auxent
);
2469 coff_pointerize_aux(abfd
,
2471 internal_ptr
->u
.syment
.n_type
,
2472 internal_ptr
->u
.syment
.n_sclass
,
2477 /* Free all the raw stuff */
2478 bfd_release(abfd
, raw_src
);
2480 for (internal_ptr
= internal
; internal_ptr
< internal_end
;
2483 if (internal_ptr
->u
.syment
.n_sclass
== C_FILE
) {
2484 /* make a file symbol point to the name in the auxent, since
2485 the text ".file" is redundant */
2486 if ((internal_ptr
+1)->u
.auxent
.x_file
.x_n
.x_zeroes
== 0) {
2487 /* the filename is a long one, point into the string table
2489 if (string_table
== NULL
) {
2490 string_table
= build_string_table(abfd
);
2493 internal_ptr
->u
.syment
._n
._n_n
._n_offset
=
2494 (int) (string_table
- 4 +
2495 (internal_ptr
+1)->u
.auxent
.x_file
.x_n
.x_offset
);
2498 /* ordinary short filename, put into memory anyway */
2499 internal_ptr
->u
.syment
._n
._n_n
._n_offset
= (int)
2500 copy_name(abfd
, (internal_ptr
+1)->u
.auxent
.x_file
.x_fname
, FILNMLEN
);
2505 if (internal_ptr
->u
.syment
._n
._n_n
._n_zeroes
!= 0) {
2507 This is a "short" name. Make it long.
2509 unsigned long i
= 0;
2510 char *newstring
= NULL
;
2512 find the length of this string without walking into memory
2516 for (i
= 0; i
< 8; ++i
) {
2517 if (internal_ptr
->u
.syment
._n
._n_name
[i
] == '\0') {
2519 } /* if end of string */
2520 } /* possible lengths of this string. */
2522 if ((newstring
= (PTR
) bfd_alloc(abfd
, ++i
)) == NULL
) {
2523 bfd_error
= no_memory
;
2526 bzero(newstring
, i
);
2527 strncpy(newstring
, internal_ptr
->u
.syment
._n
._n_name
, i
-1);
2528 internal_ptr
->u
.syment
._n
._n_n
._n_offset
= (int) newstring
;
2529 internal_ptr
->u
.syment
._n
._n_n
._n_zeroes
= 0;
2533 /* This is a long name already. Just point it at the string in memory. */
2534 if (string_table
== NULL
) {
2535 string_table
= build_string_table(abfd
);
2537 internal_ptr
->u
.syment
._n
._n_n
._n_offset
=
2538 (int) (string_table
- 4 + internal_ptr
->u
.syment
._n
._n_n
._n_offset
);
2541 internal_ptr
+= internal_ptr
->u
.syment
.n_numaux
;
2544 obj_raw_syments(abfd
) = internal
;
2545 obj_string_table(abfd
) = string_table
;
2548 } /* get_normalized_symtab() */
2552 DEFUN(section_from_bfd_index
,(abfd
, index
),
2557 struct sec
*answer
= abfd
->sections
;
2559 answer
= answer
->next
;
2569 @subsubsection Reading Linenumbers
2570 Createing the linenumber table is done by reading in the entire coff
2571 linenumber table, and creating another table for internal use.
2573 A coff line number table is structured so that each
2574 function is marked as having a line number of 0. Each line within the
2575 function is an offset from the first line in the function. The base of
2576 the line number information for the table is stored in the symbol
2577 associated with the function.
2579 The information is copied from the external to the internal table, and
2580 each symbol which marks a function is marked by pointing its...
2582 **How does this work ?**
2587 coff_slurp_line_table(abfd
, asect
)
2591 LINENO
*native_lineno
;
2592 alent
*lineno_cache
;
2594 BFD_ASSERT(asect
->lineno
== (alent
*) NULL
);
2596 native_lineno
= (LINENO
*) buy_and_read(abfd
,
2597 asect
->line_filepos
,
2600 asect
->lineno_count
));
2602 (alent
*) bfd_alloc(abfd
, (size_t) ((asect
->lineno_count
+ 1) * sizeof(alent
)));
2603 if (lineno_cache
== NULL
) {
2604 bfd_error
= no_memory
;
2607 unsigned int counter
= 0;
2608 alent
*cache_ptr
= lineno_cache
;
2609 LINENO
*src
= native_lineno
;
2611 while (counter
< asect
->lineno_count
) {
2612 struct internal_lineno dst
;
2613 coff_swap_lineno_in(abfd
, src
, &dst
);
2614 cache_ptr
->line_number
= dst
.l_lnno
;
2616 if (cache_ptr
->line_number
== 0) {
2617 coff_symbol_type
*sym
=
2618 (coff_symbol_type
*) (dst
.l_addr
.l_symndx
2619 + obj_symbol_slew(abfd
)
2620 + obj_raw_syments(abfd
))->u
.syment
._n
._n_n
._n_zeroes
;
2621 cache_ptr
->u
.sym
= (asymbol
*) sym
;
2622 sym
->lineno
= cache_ptr
;
2625 cache_ptr
->u
.offset
= dst
.l_addr
.l_paddr
2626 - bfd_section_vma(abfd
, asect
);
2627 } /* If no linenumber expect a symbol index */
2633 cache_ptr
->line_number
= 0;
2636 asect
->lineno
= lineno_cache
;
2637 /* FIXME, free native_lineno here, or use alloca or something. */
2639 } /* coff_slurp_line_table() */
2642 DEFUN(coff_slurp_symbol_table
,(abfd
),
2645 combined_entry_type
*native_symbols
;
2646 coff_symbol_type
*cached_area
;
2647 unsigned int *table_ptr
;
2649 unsigned int number_of_symbols
= 0;
2650 if (obj_symbols(abfd
))
2652 bfd_seek(abfd
, obj_sym_filepos(abfd
), SEEK_SET
);
2654 /* Read in the symbol table */
2655 if ((native_symbols
= get_normalized_symtab(abfd
)) == NULL
) {
2660 /* Allocate enough room for all the symbols in cached form */
2662 (coff_symbol_type
*)
2663 bfd_alloc(abfd
, (size_t) (bfd_get_symcount(abfd
) * sizeof(coff_symbol_type
)));
2665 if (cached_area
== NULL
) {
2666 bfd_error
= no_memory
;
2671 bfd_alloc(abfd
, (size_t) (bfd_get_symcount(abfd
) * sizeof(unsigned int)));
2673 if (table_ptr
== NULL
) {
2674 bfd_error
= no_memory
;
2677 coff_symbol_type
*dst
= cached_area
;
2678 unsigned int last_native_index
= bfd_get_symcount(abfd
);
2679 unsigned int this_index
= 0;
2680 while (this_index
< last_native_index
) {
2681 combined_entry_type
*src
= native_symbols
+ this_index
;
2682 table_ptr
[this_index
] = number_of_symbols
;
2683 dst
->symbol
.the_bfd
= abfd
;
2685 dst
->symbol
.name
= (char *)(src
->u
.syment
._n
._n_n
._n_offset
);
2687 We use the native name field to point to the cached field
2689 src
->u
.syment
._n
._n_n
._n_zeroes
= (int) dst
;
2690 dst
->symbol
.section
= section_from_bfd_index(abfd
,
2691 src
->u
.syment
.n_scnum
);
2692 switch (src
->u
.syment
.n_sclass
) {
2696 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
2697 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
2698 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
2700 /* Fall through to next case */
2705 if ((src
->u
.syment
.n_scnum
) == 0) {
2706 if ((src
->u
.syment
.n_value
) == 0) {
2707 dst
->symbol
.flags
= BSF_UNDEFINED
;
2708 dst
->symbol
.value
= 0;
2711 dst
->symbol
.flags
= BSF_FORT_COMM
;
2712 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2717 Base the value as an index from the base of the
2720 if (dst
->symbol
.section
== (asection
*) NULL
) {
2721 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
| BSF_ABSOLUTE
;
2722 dst
->symbol
.value
= src
->u
.syment
.n_value
;
2725 dst
->symbol
.flags
= BSF_EXPORT
| BSF_GLOBAL
;
2726 dst
->symbol
.value
= src
->u
.syment
.n_value
- dst
->symbol
.section
->vma
;
2728 if (ISFCN((src
->u
.syment
.n_type
))) {
2730 A function ext does not go at the end of a file
2732 dst
->symbol
.flags
|= BSF_NOT_AT_END
;
2737 case C_STAT
: /* static */
2739 case C_LEAFSTAT
: /* static leaf procedure */
2741 case C_LABEL
: /* label */
2742 dst
->symbol
.flags
= BSF_LOCAL
;
2744 Base the value as an index from the base of the section
2746 dst
->symbol
.value
= (src
->u
.syment
.n_value
) - dst
->symbol
.section
->vma
;
2749 case C_MOS
: /* member of structure */
2750 case C_EOS
: /* end of structure */
2751 #ifdef NOTDEF /* C_AUTOARG has the same value */
2753 case C_GLBLREG
: /* A29k-specific storage class */
2756 case C_REGPARM
: /* register parameter */
2757 case C_REG
: /* register variable */
2759 case C_AUTOARG
: /* 960-specific storage class */
2761 case C_TPDEF
: /* type definition */
2764 case C_AUTO
: /* automatic variable */
2765 case C_FIELD
: /* bit field */
2766 case C_ENTAG
: /* enumeration tag */
2767 case C_MOE
: /* member of enumeration */
2768 case C_MOU
: /* member of union */
2769 case C_UNTAG
: /* union tag */
2771 dst
->symbol
.flags
= BSF_DEBUGGING
;
2772 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2775 case C_FILE
: /* file name */
2776 case C_STRTAG
: /* structure tag */
2777 dst
->symbol
.flags
= BSF_DEBUGGING
;
2778 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2781 case C_BLOCK
: /* ".bb" or ".eb" */
2782 case C_FCN
: /* ".bf" or ".ef" */
2783 case C_EFCN
: /* physical end of function */
2784 dst
->symbol
.flags
= BSF_LOCAL
;
2786 Base the value as an index from the base of the section
2788 dst
->symbol
.value
= (src
->u
.syment
.n_value
) - dst
->symbol
.section
->vma
;
2792 case C_EXTDEF
: /* external definition */
2793 case C_ULABEL
: /* undefined label */
2794 case C_USTATIC
: /* undefined static */
2795 case C_LINE
: /* line # reformatted as symbol table entry */
2796 case C_ALIAS
: /* duplicate tag */
2797 case C_HIDDEN
: /* ext symbol in dmert public lib */
2801 fprintf(stderr
,"Unrecognized storage class %d\n",
2802 src
->u
.syment
.n_sclass
);
2804 dst
->symbol
.flags
= BSF_DEBUGGING
;
2805 dst
->symbol
.value
= (src
->u
.syment
.n_value
);
2810 BFD_ASSERT(dst
->symbol
.flags
!= 0);
2814 dst
->symbol
.udata
= 0;
2815 dst
->lineno
= (alent
*) NULL
;
2816 this_index
+= (src
->u
.syment
.n_numaux
) + 1;
2818 number_of_symbols
++;
2819 } /* walk the native symtab */
2820 } /* bfdize the native symtab */
2822 obj_symbols(abfd
) = cached_area
;
2823 obj_raw_syments(abfd
) = native_symbols
;
2825 bfd_get_symcount(abfd
) = number_of_symbols
;
2826 obj_convert(abfd
) = table_ptr
;
2827 /* Slurp the line tables for each section too */
2832 coff_slurp_line_table(abfd
, p
);
2837 } /* coff_slurp_symbol_table() */
2840 coff_get_symtab_upper_bound(abfd
)
2843 if (!coff_slurp_symbol_table(abfd
))
2846 return (bfd_get_symcount(abfd
) + 1) * (sizeof(coff_symbol_type
*));
2851 coff_get_symtab(abfd
, alocation
)
2853 asymbol
**alocation
;
2855 unsigned int counter
= 0;
2856 coff_symbol_type
*symbase
;
2857 coff_symbol_type
**location
= (coff_symbol_type
**) (alocation
);
2858 if (!coff_slurp_symbol_table(abfd
))
2861 for (symbase
= obj_symbols(abfd
); counter
++ < bfd_get_symcount(abfd
);)
2862 *(location
++) = symbase
++;
2864 return bfd_get_symcount(abfd
);
2868 coff_get_reloc_upper_bound(abfd
, asect
)
2872 if (bfd_get_format(abfd
) != bfd_object
) {
2873 bfd_error
= invalid_operation
;
2876 return (asect
->reloc_count
+ 1) * sizeof(arelent
*);
2880 @subsubsection Reading Relocations
2881 Coff relocations are easily transformed into the internal bfd form
2884 Reading a coff relocation table is done in the following stages:
2887 The entire coff relocation table is read into memory.
2889 Each relocation is processed in turn, first it is swapped from the
2890 external to the internal form.
2892 The symbol referenced in the relocation's symbol index is turned into
2893 a pointer into the canonical symbol table. Note that this table is the
2894 same as the one returned by a call to @code{bfd_canonicalize_symtab}.
2895 The back end will call the routine and save the result if a
2896 canonicalization hasn't been done.
2898 The reloc index is turned into a pointer to a howto structure, in a
2899 back end specific way. For instance, the 386 and 960 use the
2900 @code{r_type} to directly produce an index into a howto table vector;
2901 the 88k subtracts a number from the @code{r_type} field and creates an
2907 DEFUN(coff_slurp_reloc_table
,(abfd
, asect
, symbols
),
2912 RELOC
*native_relocs
;
2913 arelent
*reloc_cache
;
2914 if (asect
->relocation
)
2916 if (asect
->reloc_count
== 0)
2918 if (!coff_slurp_symbol_table(abfd
))
2921 (RELOC
*) buy_and_read(abfd
,
2925 asect
->reloc_count
));
2926 reloc_cache
= (arelent
*)
2927 bfd_alloc(abfd
, (size_t) (asect
->reloc_count
* sizeof(arelent
)));
2929 if (reloc_cache
== NULL
) {
2930 bfd_error
= no_memory
;
2935 for (cache_ptr
= reloc_cache
,
2936 src
= native_relocs
;
2937 cache_ptr
< reloc_cache
+ asect
->reloc_count
;
2940 struct internal_reloc dst
;
2942 bfd_swap_reloc_in(abfd
, src
, &dst
);
2944 dst
.r_symndx
+= obj_symbol_slew(abfd
);
2945 cache_ptr
->sym_ptr_ptr
= symbols
+ obj_convert(abfd
)[dst
.r_symndx
];
2947 /* AMD has two relocation entries for the 'consth' instruction.
2948 * The first is R_IHIHALF (part 1), the second is R_IHCONST
2949 * (part 2). The second entry's r_symndx does not contain
2950 * an index to a symbol but rather a value (apparently).
2951 * Also, see the ifdef below for saving the r_symndx value in addend.
2953 if (dst
.r_type
== R_IHCONST
) {
2957 ptr
= *(cache_ptr
->sym_ptr_ptr
);
2958 cache_ptr
->address
= dst
.r_vaddr
;
2960 The symbols definitions that we have read in have been
2961 relocated as if their sections started at 0. But the offsets
2962 refering to the symbols in the raw data have not been
2963 modified, so we have to have a negative addend to compensate.
2965 Note that symbols which used to be common must be left alone
2968 if (ptr
&& ptr
->the_bfd
== abfd
2969 && ptr
->section
!= (asection
*) NULL
2970 && ((ptr
->flags
& BSF_OLD_COMMON
)== 0))
2973 cache_ptr
->addend
= -(ptr
->section
->vma
+ ptr
->value
);
2975 cache_ptr
->addend
= 0;
2980 cache_ptr
->addend
= 0;
2983 cache_ptr
->address
-= asect
->vma
;
2985 cache_ptr
->section
= (asection
*) NULL
;
2988 if (dst
.r_type
== R_IHCONST
) {
2989 /* Add in the value which was stored in the symbol index */
2990 /* See above comment */
2991 cache_ptr
->addend
+= dst
.r_symndx
;
2992 /* Throw away the bogus symbol pointer */
2993 cache_ptr
->sym_ptr_ptr
= 0;
2995 cache_ptr
->howto
= howto_table
+ dst
.r_type
;
2998 cache_ptr
->howto
= howto_table
+ dst
.r_type
;
3001 cache_ptr
->howto
= howto_table
+ dst
.r_type
;
3004 cache_ptr
->howto
= howto_table
+ dst
.r_type
- R_RELBYTE
;
3007 if (dst
.r_type
>= R_PCR16L
&& dst
.r_type
<= R_VRT32
) {
3008 cache_ptr
->howto
= howto_table
+ dst
.r_type
- R_PCR16L
;
3009 cache_ptr
->addend
+= dst
.r_offset
<< 16;
3020 asect
->relocation
= reloc_cache
;
3025 /* This is stupid. This function should be a boolean predicate */
3027 coff_canonicalize_reloc(abfd
, section
, relptr
, symbols
)
3033 arelent
*tblptr
= section
->relocation
;
3034 unsigned int count
= 0;
3035 if (!(tblptr
|| coff_slurp_reloc_table(abfd
, section
, symbols
)))
3037 tblptr
= section
->relocation
;
3041 for (; count
++ < section
->reloc_count
;)
3042 *relptr
++ = tblptr
++;
3046 return section
->reloc_count
;
3051 provided a bfd, a section and an offset into the section, calculate and
3052 return the name of the source file and the line nearest to the wanted
3057 DEFUN(coff_find_nearest_line
,(abfd
,
3065 asection
*section AND
3066 asymbol
**symbols AND
3068 CONST
char **filename_ptr AND
3069 CONST
char **functionname_ptr AND
3070 unsigned int *line_ptr
)
3072 static bfd
*cache_abfd
;
3073 static asection
*cache_section
;
3074 static bfd_vma cache_offset
;
3075 static unsigned int cache_i
;
3076 static alent
*cache_l
;
3079 struct icofdata
*cof
= obj_icof(abfd
);
3080 /* Run through the raw syments if available */
3081 combined_entry_type
*p
;
3083 unsigned int line_base
= 0;
3087 *functionname_ptr
= 0;
3090 /* Don't try and find line numbers in a non coff file */
3091 if (abfd
->xvec
->flavour
!= bfd_target_coff_flavour_enum
)
3094 if (cof
== (struct icofdata
*)NULL
)
3097 p
= cof
->raw_syments
;
3099 for (i
= 0; i
< cof
->raw_syment_count
; i
++) {
3100 if (p
->u
.syment
.n_sclass
== C_FILE
) {
3101 /* File name has been moved into symbol */
3102 *filename_ptr
= (char *) p
->u
.syment
._n
._n_n
._n_offset
;
3105 p
+= 1 + p
->u
.syment
.n_numaux
;
3107 /* Now wander though the raw linenumbers of the section */
3109 If this is the same bfd as we were previously called with and this is
3110 the same section, and the offset we want is further down then we can
3111 prime the lookup loop
3113 if (abfd
== cache_abfd
&&
3114 section
== cache_section
&&
3115 offset
>= cache_offset
) {
3121 l
= section
->lineno
;
3124 for (; i
< section
->lineno_count
; i
++) {
3125 if (l
->line_number
== 0) {
3126 /* Get the symbol this line number points at */
3127 coff_symbol_type
*coff
= (coff_symbol_type
*) (l
->u
.sym
);
3128 *functionname_ptr
= coff
->symbol
.name
;
3130 combined_entry_type
*s
= coff
->native
;
3131 s
= s
+ 1 + s
->u
.syment
.n_numaux
;
3133 S should now point to the .bf of the function
3135 if (s
->u
.syment
.n_numaux
) {
3137 The linenumber is stored in the auxent
3139 union internal_auxent
*a
= &((s
+ 1)->u
.auxent
);
3140 line_base
= a
->x_sym
.x_misc
.x_lnsz
.x_lnno
;
3145 if (l
->u
.offset
> offset
)
3147 *line_ptr
= l
->line_number
+ line_base
+ 1;
3153 cache_section
= section
;
3154 cache_offset
= offset
;
3163 coff_sym_filepos(abfd
)
3166 return obj_sym_filepos(abfd
);
3172 DEFUN(coff_sizeof_headers
,(abfd
, reloc
),
3178 if (reloc
== false) {
3179 size
= FILHSZ
+ AOUTSZ
;
3185 size
+= abfd
->section_count
* SCNHSZ
;
3190 #define coff_core_file_failing_command _bfd_dummy_core_file_failing_command
3191 #define coff_core_file_failing_signal _bfd_dummy_core_file_failing_signal
3192 #define coff_core_file_matches_executable_p _bfd_dummy_core_file_matches_executable_p
3193 #define coff_slurp_armap bfd_slurp_coff_armap
3194 #define coff_slurp_extended_name_table _bfd_slurp_extended_name_table
3195 #define coff_truncate_arname bfd_dont_truncate_arname
3196 #define coff_openr_next_archived_file bfd_generic_openr_next_archived_file
3197 #define coff_generic_stat_arch_elt bfd_generic_stat_arch_elt
3198 #define coff_get_section_contents bfd_generic_get_section_contents
3199 #define coff_close_and_cleanup bfd_generic_close_and_cleanup
3201 #define coff_bfd_debug_info_start bfd_void
3202 #define coff_bfd_debug_info_end bfd_void
3203 #define coff_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void