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6d7c88c3 | 1 | /* Support for the generic parts of most COFF variants, for BFD. |
55c95b04 | 2 | Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc. |
7a8b18b6 | 3 | Written by Cygnus Support. |
0f268757 | 4 | |
7a8b18b6 | 5 | This file is part of BFD, the Binary File Descriptor library. |
0f268757 | 6 | |
7a8b18b6 SC |
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. | |
0f268757 | 11 | |
7a8b18b6 SC |
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. | |
0f268757 | 16 | |
7a8b18b6 SC |
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. */ | |
6f715d66 | 20 | |
6590a8c9 SC |
21 | /* |
22 | Most of this hacked by Steve Chamberlain, | |
23 | sac@cygnus.com | |
24 | */ | |
9fda1a39 | 25 | /* |
6f715d66 | 26 | |
9fda1a39 SC |
27 | SECTION |
28 | coff backends | |
29 | ||
9fda1a39 SC |
30 | BFD supports a number of different flavours of coff format. |
31 | The major difference between formats are the sizes and | |
32 | alignments of fields in structures on disk, and the occasional | |
33 | extra field. | |
34 | ||
35 | Coff in all its varieties is implimented with a few common | |
36 | files and a number of implementation specific files. For | |
37 | example, The 88k bcs coff format is implemented in the file | |
38 | @code{coff-m88k.c}. This file @code{#include}s | |
075caafd ILT |
39 | @code{coff/m88k.h} which defines the external structure of the |
40 | coff format for the 88k, and @code{coff/internal.h} which | |
9fda1a39 | 41 | defines the internal structure. @code{coff-m88k.c} also |
075caafd ILT |
42 | defines the relocations used by the 88k format |
43 | @xref{Relocations}. | |
9fda1a39 SC |
44 | |
45 | The Intel i960 processor version of coff is implemented in | |
46 | @code{coff-i960.c}. This file has the same structure as | |
075caafd | 47 | @code{coff-m88k.c}, except that it includes @code{coff/i960.h} |
9fda1a39 SC |
48 | rather than @code{coff-m88k.h}. |
49 | ||
50 | SUBSECTION | |
51 | Porting To A New Version of Coff | |
52 | ||
9fda1a39 SC |
53 | The recommended method is to select from the existing |
54 | implimentations the version of coff which is most like the one | |
55 | you want to use, for our purposes, we'll say that i386 coff is | |
56 | the one you select, and that your coff flavour is called foo. | |
57 | Copy the @code{i386coff.c} to @code{foocoff.c}, copy | |
075caafd | 58 | @code{../include/coff/i386.h} to @code{../include/coff/foo.h} |
9fda1a39 SC |
59 | and add the lines to @code{targets.c} and @code{Makefile.in} |
60 | so that your new back end is used. Alter the shapes of the | |
075caafd | 61 | structures in @code{../include/coff/foo.h} so that they match |
9fda1a39 | 62 | what you need. You will probably also have to add |
075caafd | 63 | @code{#ifdef}s to the code in @code{coff/internal.h} and |
9fda1a39 SC |
64 | @code{coffcode.h} if your version of coff is too wild. |
65 | ||
66 | You can verify that your new BFD backend works quite simply by | |
67 | building @code{objdump} from the @code{binutils} directory, | |
68 | and making sure that its version of what's going on at your | |
69 | host systems idea (assuming it has the pretty standard coff | |
70 | dump utility (usually called @code{att-dump} or just | |
71 | @code{dump})) are the same. Then clean up your code, and send | |
72 | what you've done to Cygnus. Then your stuff will be in the | |
73 | next release, and you won't have to keep integrating it. | |
74 | ||
75 | SUBSECTION | |
76 | How The Coff Backend Works | |
77 | ||
075caafd ILT |
78 | SUBSUBSECTION |
79 | File Layout | |
80 | ||
81 | The Coff backend is split into generic routines that are | |
82 | applicable to any Coff target and routines that are specific | |
83 | to a particular target. The target-specific routines are | |
84 | further split into ones which are basically the same for all | |
85 | Coff targets except that they use the external symbol format | |
86 | or use different values for certain constants. | |
87 | ||
88 | The generic routines are in @file{coffgen.c}. These routines | |
89 | work for any Coff target. They use some hooks into the target | |
90 | specific code; the hooks are in a @code{bfd_coff_backend_data} | |
91 | structure, one of which exists for each target. | |
92 | ||
93 | The essentially similar target-specific routines are in | |
94 | @file{coffcode.h}. This header file includes executable code. | |
95 | The various Coff targets first include the appropriate Coff | |
96 | header file, make any special defines that are needed, and | |
97 | then include @file{coffcode.h}. | |
98 | ||
99 | Some of the Coff targets then also have additional routines in | |
100 | the target source file itself. | |
101 | ||
102 | For example, @file{coff-i960.c} includes | |
103 | @file{coff/internal.h} and @file{coff/i960.h}. It then | |
104 | defines a few constants, such as @code{I960}, and includes | |
105 | @file{coffcode.h}. Since the i960 has complex relocation | |
106 | types, @file{coff-i960.c} also includes some code to | |
107 | manipulate the i960 relocs. This code is not in | |
108 | @file{coffcode.h} because it would not be used by any other | |
109 | target. | |
110 | ||
9fda1a39 SC |
111 | SUBSUBSECTION |
112 | Bit Twiddling | |
113 | ||
9fda1a39 SC |
114 | Each flavour of coff supported in BFD has its own header file |
115 | descibing the external layout of the structures. There is also | |
116 | an internal description of the coff layout (in | |
075caafd | 117 | @code{coff/internal.h}). A major function of the |
9fda1a39 SC |
118 | coff backend is swapping the bytes and twiddling the bits to |
119 | translate the external form of the structures into the normal | |
120 | internal form. This is all performed in the | |
121 | @code{bfd_swap}_@i{thing}_@i{direction} routines. Some | |
122 | elements are different sizes between different versions of | |
123 | coff, it is the duty of the coff version specific include file | |
124 | to override the definitions of various packing routines in | |
125 | @code{coffcode.h}. Eg the size of line number entry in coff is | |
126 | sometimes 16 bits, and sometimes 32 bits. @code{#define}ing | |
127 | @code{PUT_LNSZ_LNNO} and @code{GET_LNSZ_LNNO} will select the | |
128 | correct one. No doubt, some day someone will find a version of | |
129 | coff which has a varying field size not catered for at the | |
130 | moment. To port BFD, that person will have to add more @code{#defines}. | |
131 | Three of the bit twiddling routines are exported to | |
132 | @code{gdb}; @code{coff_swap_aux_in}, @code{coff_swap_sym_in} | |
133 | and @code{coff_swap_linno_in}. @code{GDB} reads the symbol | |
134 | table on its own, but uses BFD to fix things up. More of the | |
135 | bit twiddlers are exported for @code{gas}; | |
136 | @code{coff_swap_aux_out}, @code{coff_swap_sym_out}, | |
137 | @code{coff_swap_lineno_out}, @code{coff_swap_reloc_out}, | |
138 | @code{coff_swap_filehdr_out}, @code{coff_swap_aouthdr_out}, | |
139 | @code{coff_swap_scnhdr_out}. @code{Gas} currently keeps track | |
140 | of all the symbol table and reloc drudgery itself, thereby | |
141 | saving the internal BFD overhead, but uses BFD to swap things | |
142 | on the way out, making cross ports much safer. This also | |
143 | allows BFD (and thus the linker) to use the same header files | |
144 | as @code{gas}, which makes one avenue to disaster disappear. | |
145 | ||
146 | SUBSUBSECTION | |
147 | Symbol Reading | |
148 | ||
9fda1a39 SC |
149 | The simple canonical form for symbols used by BFD is not rich |
150 | enough to keep all the information available in a coff symbol | |
151 | table. The back end gets around this by keeping the original | |
152 | symbol table around, "behind the scenes". | |
153 | ||
154 | When a symbol table is requested (through a call to | |
155 | @code{bfd_canonicalize_symtab}, a request gets through to | |
075caafd | 156 | @code{coff_get_normalized_symtab}. This reads the symbol table from |
9fda1a39 SC |
157 | the coff file and swaps all the structures inside into the |
158 | internal form. It also fixes up all the pointers in the table | |
159 | (represented in the file by offsets from the first symbol in | |
160 | the table) into physical pointers to elements in the new | |
161 | internal table. This involves some work since the meanings of | |
162 | fields changes depending upon context; a field that is a | |
163 | pointer to another structure in the symbol table at one moment | |
164 | may be the size in bytes of a structure in the next. Another | |
165 | pass is made over the table. All symbols which mark file names | |
616ebcfd | 166 | (<<C_FILE>> symbols) are modified so that the internal |
9fda1a39 SC |
167 | string points to the value in the auxent (the real filename) |
168 | rather than the normal text associated with the symbol | |
169 | (@code{".file"}). | |
170 | ||
171 | At this time the symbol names are moved around. Coff stores | |
172 | all symbols less than nine characters long physically | |
173 | within the symbol table, longer strings are kept at the end of | |
174 | the file in the string table. This pass moves all strings | |
175 | into memory, and replaces them with pointers to the strings. | |
176 | ||
177 | ||
178 | The symbol table is massaged once again, this time to create | |
179 | the canonical table used by the BFD application. Each symbol | |
180 | is inspected in turn, and a decision made (using the | |
181 | @code{sclass} field) about the various flags to set in the | |
182 | @code{asymbol} @xref{Symbols}. The generated canonical table | |
183 | shares strings with the hidden internal symbol table. | |
184 | ||
185 | Any linenumbers are read from the coff file too, and attached | |
186 | to the symbols which own the functions the linenumbers belong to. | |
187 | ||
188 | SUBSUBSECTION | |
189 | Symbol Writing | |
190 | ||
9fda1a39 SC |
191 | Writing a symbol to a coff file which didn't come from a coff |
192 | file will lose any debugging information. The @code{asymbol} | |
193 | structure remembers the BFD from which was born, and on output | |
194 | the back end makes sure that the same destination target as | |
195 | source target is present. | |
196 | ||
197 | When the symbols have come from a coff file then all the | |
198 | debugging information is preserved. | |
199 | ||
200 | Symbol tables are provided for writing to the back end in a | |
201 | vector of pointers to pointers. This allows applications like | |
202 | the linker to accumulate and output large symbol tables | |
203 | without having to do too much byte copying. | |
204 | ||
9fda1a39 SC |
205 | This function runs through the provided symbol table and |
206 | patches each symbol marked as a file place holder | |
207 | (@code{C_FILE}) to point to the next file place holder in the | |
208 | list. It also marks each @code{offset} field in the list with | |
209 | the offset from the first symbol of the current symbol. | |
210 | ||
211 | Another function of this procedure is to turn the canonical | |
212 | value form of BFD into the form used by coff. Internally, BFD | |
213 | expects symbol values to be offsets from a section base; so a | |
214 | symbol physically at 0x120, but in a section starting at | |
215 | 0x100, would have the value 0x20. Coff expects symbols to | |
216 | contain their final value, so symbols have their values | |
217 | changed at this point to reflect their sum with their owning | |
218 | section. Note that this transformation uses the | |
219 | <<output_section>> field of the @code{asymbol}'s | |
220 | @code{asection} @xref{Sections}. | |
221 | ||
222 | o coff_mangle_symbols | |
616ebcfd | 223 | |
9fda1a39 SC |
224 | This routine runs though the provided symbol table and uses |
225 | the offsets generated by the previous pass and the pointers | |
226 | generated when the symbol table was read in to create the | |
227 | structured hierachy required by coff. It changes each pointer | |
228 | to a symbol to an index into the symbol table of the symbol | |
229 | being referenced. | |
230 | ||
231 | o coff_write_symbols | |
616ebcfd | 232 | |
9fda1a39 SC |
233 | This routine runs through the symbol table and patches up the |
234 | symbols from their internal form into the coff way, calls the | |
235 | bit twiddlers and writes out the tabel to the file. | |
6f715d66 | 236 | |
9fda1a39 | 237 | */ |
6f715d66 | 238 | |
9fda1a39 | 239 | /* |
616ebcfd SC |
240 | INTERNAL_DEFINITION |
241 | coff_symbol_type | |
6f715d66 | 242 | |
616ebcfd | 243 | DESCRIPTION |
9fda1a39 SC |
244 | The hidden information for an asymbol is described in a |
245 | coff_ptr_struct, which is typedefed to a combined_entry_type | |
6f715d66 | 246 | |
616ebcfd | 247 | CODE_FRAGMENT |
e98e6ec1 | 248 | . |
616ebcfd SC |
249 | .typedef struct coff_ptr_struct |
250 | .{ | |
251 | . | |
252 | . {* Remembers the offset from the first symbol in the file for | |
253 | . this symbol. Generated by coff_renumber_symbols. *} | |
254 | .unsigned int offset; | |
255 | . | |
256 | . {* Should the tag field of this symbol be renumbered. | |
257 | . Created by coff_pointerize_aux. *} | |
258 | .char fix_tag; | |
259 | . | |
260 | . {* Should the endidx field of this symbol be renumbered. | |
261 | . Created by coff_pointerize_aux. *} | |
262 | .char fix_end; | |
263 | . | |
264 | . {* The container for the symbol structure as read and translated | |
265 | . from the file. *} | |
266 | . | |
267 | .union { | |
268 | . union internal_auxent auxent; | |
269 | . struct internal_syment syment; | |
270 | . } u; | |
271 | .} combined_entry_type; | |
272 | . | |
273 | . | |
274 | .{* Each canonical asymbol really looks like this: *} | |
275 | . | |
276 | .typedef struct coff_symbol_struct | |
277 | .{ | |
278 | . {* The actual symbol which the rest of BFD works with *} | |
279 | .asymbol symbol; | |
280 | . | |
281 | . {* A pointer to the hidden information for this symbol *} | |
282 | .combined_entry_type *native; | |
283 | . | |
284 | . {* A pointer to the linenumber information for this symbol *} | |
285 | .struct lineno_cache_entry *lineno; | |
286 | . | |
d58b7049 SC |
287 | . {* Have the line numbers been relocated yet ? *} |
288 | .boolean done_lineno; | |
616ebcfd | 289 | .} coff_symbol_type; |
6f715d66 | 290 | |
6f715d66 | 291 | |
0f268757 SC |
292 | */ |
293 | ||
6590a8c9 | 294 | #include "seclet.h" |
075caafd | 295 | #include "coffswap.h" |
0f268757 SC |
296 | \f |
297 | /* void warning(); */ | |
6f715d66 | 298 | |
cbdc7909 JG |
299 | /* |
300 | * Return a word with STYP_* (scnhdr.s_flags) flags set to represent the | |
41f50af0 SC |
301 | * incoming SEC_* flags. The inverse of this function is styp_to_sec_flags(). |
302 | * NOTE: If you add to/change this routine, you should mirror the changes | |
303 | * in styp_to_sec_flags(). | |
304 | */ | |
cbdc7909 | 305 | static long |
41f50af0 SC |
306 | DEFUN(sec_to_styp_flags, (sec_name, sec_flags), |
307 | CONST char * sec_name AND | |
308 | flagword sec_flags) | |
309 | { | |
47cf4997 SC |
310 | long styp_flags = 0; |
311 | ||
312 | if (!strcmp(sec_name, _TEXT)) | |
313 | { | |
314 | styp_flags = STYP_TEXT; | |
315 | } | |
316 | else if (!strcmp(sec_name, _DATA)) | |
317 | { | |
318 | styp_flags = STYP_DATA; | |
b26059aa | 319 | #ifdef TWO_DATA_SECS |
47cf4997 SC |
320 | } |
321 | else if (!strcmp(sec_name, ".data2")) | |
322 | { | |
323 | styp_flags = STYP_DATA; | |
324 | #endif /* TWO_DATA_SECS */ | |
325 | } | |
326 | else if (!strcmp(sec_name, _BSS)) | |
327 | { | |
328 | styp_flags = STYP_BSS; | |
8c4a1ace | 329 | #ifdef _COMMENT |
47cf4997 SC |
330 | } |
331 | else if (!strcmp(sec_name, _COMMENT)) | |
332 | { | |
333 | styp_flags = STYP_INFO; | |
334 | #endif /* _COMMENT */ | |
b26059aa | 335 | #ifdef _LIB |
47cf4997 SC |
336 | } |
337 | else if (!strcmp(sec_name, _LIB)) | |
338 | { | |
339 | styp_flags = STYP_LIB; | |
340 | #endif /* _LIB */ | |
35d835c4 JK |
341 | #ifdef _LIT |
342 | } | |
343 | else if (!strcmp (sec_name, _LIT)) | |
344 | { | |
345 | stype_flags = STYP_LIT; | |
346 | #endif /* _LIT */ | |
47cf4997 SC |
347 | |
348 | } | |
349 | /* Try and figure out what it should be */ | |
27f524a3 | 350 | else if (sec_flags & SEC_CODE) |
47cf4997 SC |
351 | { |
352 | styp_flags = STYP_TEXT; | |
353 | } | |
354 | else if (sec_flags & SEC_DATA) | |
355 | { | |
356 | styp_flags = STYP_DATA; | |
357 | } | |
358 | else if (sec_flags & SEC_READONLY) | |
359 | { | |
360 | #ifdef STYP_LIT /* 29k readonly text/data section */ | |
361 | styp_flags = STYP_LIT; | |
41f50af0 | 362 | #else |
47cf4997 SC |
363 | styp_flags = STYP_TEXT; |
364 | #endif /* STYP_LIT */ | |
365 | } | |
366 | else if (sec_flags & SEC_LOAD) | |
367 | { | |
368 | styp_flags = STYP_TEXT; | |
369 | } | |
370 | else { | |
371 | styp_flags = STYP_BSS; | |
372 | } | |
41f50af0 | 373 | |
b26059aa | 374 | #ifdef STYP_NOLOAD |
47cf4997 SC |
375 | if (sec_flags & SEC_NEVER_LOAD) |
376 | styp_flags |= STYP_NOLOAD; | |
b26059aa ILT |
377 | #endif |
378 | ||
47cf4997 | 379 | return(styp_flags); |
41f50af0 | 380 | } |
cbdc7909 | 381 | /* |
41f50af0 | 382 | * Return a word with SEC_* flags set to represent the incoming |
cbdc7909 JG |
383 | * STYP_* flags (from scnhdr.s_flags). The inverse of this |
384 | * function is sec_to_styp_flags(). | |
41f50af0 SC |
385 | * NOTE: If you add to/change this routine, you should mirror the changes |
386 | * in sec_to_styp_flags(). | |
387 | */ | |
cbdc7909 | 388 | static flagword |
075caafd ILT |
389 | DEFUN(styp_to_sec_flags, (abfd, hdr), |
390 | bfd *abfd AND | |
391 | PTR hdr) | |
41f50af0 | 392 | { |
075caafd ILT |
393 | struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr; |
394 | long styp_flags = internal_s->s_flags; | |
8070f29d | 395 | flagword sec_flags=0; |
41f50af0 | 396 | |
b26059aa ILT |
397 | #ifdef STYP_NOLOAD |
398 | if (styp_flags & STYP_NOLOAD) | |
399 | { | |
400 | sec_flags |= SEC_NEVER_LOAD; | |
401 | } | |
402 | #endif /* STYP_NOLOAD */ | |
403 | ||
8f718ed3 ILT |
404 | /* For 386 COFF, at least, an unloadable text or data section is |
405 | actually a shared library section. */ | |
406 | if (styp_flags & STYP_TEXT) | |
8070f29d | 407 | { |
8f718ed3 ILT |
408 | if (sec_flags & SEC_NEVER_LOAD) |
409 | sec_flags |= SEC_CODE | SEC_SHARED_LIBRARY; | |
410 | else | |
411 | sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC; | |
412 | } | |
413 | else if (styp_flags & STYP_DATA) | |
414 | { | |
415 | if (sec_flags & SEC_NEVER_LOAD) | |
416 | sec_flags |= SEC_DATA | SEC_SHARED_LIBRARY; | |
417 | else | |
418 | sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC; | |
8070f29d KR |
419 | } |
420 | else if (styp_flags & STYP_BSS) | |
421 | { | |
35d835c4 JK |
422 | #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY |
423 | if (sec_flags & SEC_NEVER_LOAD) | |
424 | sec_flags |= SEC_ALLOC | SEC_SHARED_LIBRARY; | |
425 | else | |
426 | #endif | |
427 | sec_flags |= SEC_ALLOC; | |
8070f29d | 428 | } |
ce07dd7c KR |
429 | else if (styp_flags & STYP_INFO) |
430 | { | |
35d835c4 | 431 | /* Nothing to do. */ |
ce07dd7c | 432 | } |
8070f29d KR |
433 | else |
434 | { | |
b26059aa | 435 | sec_flags |= SEC_ALLOC | SEC_LOAD; |
8070f29d | 436 | } |
b26059aa | 437 | |
8070f29d KR |
438 | #ifdef STYP_LIT /* A29k readonly text/data section type */ |
439 | if ((styp_flags & STYP_LIT) == STYP_LIT) | |
440 | { | |
441 | sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY); | |
442 | } | |
443 | #endif /* STYP_LIT */ | |
444 | #ifdef STYP_OTHER_LOAD /* Other loaded sections */ | |
445 | if (styp_flags & STYP_OTHER_LOAD) | |
446 | { | |
447 | sec_flags = (SEC_LOAD | SEC_ALLOC); | |
448 | } | |
449 | #endif /* STYP_SDATA */ | |
41f50af0 | 450 | |
8070f29d | 451 | return(sec_flags); |
41f50af0 | 452 | } |
0f268757 | 453 | |
54862c89 | 454 | #define get_index(symbol) ((int) (symbol)->udata) |
0f268757 | 455 | |
07de8e96 KR |
456 | /* |
457 | INTERNAL_DEFINITION | |
458 | bfd_coff_backend_data | |
459 | ||
460 | CODE_FRAGMENT | |
461 | ||
07de8e96 | 462 | Special entry points for gdb to swap in coff symbol table parts |
60ac749c ILT |
463 | .typedef struct |
464 | .{ | |
07de8e96 KR |
465 | . void (*_bfd_coff_swap_aux_in) PARAMS (( |
466 | . bfd *abfd , | |
467 | . PTR ext, | |
468 | . int type, | |
469 | . int class , | |
470 | . PTR in)); | |
471 | . | |
472 | . void (*_bfd_coff_swap_sym_in) PARAMS (( | |
473 | . bfd *abfd , | |
474 | . PTR ext, | |
475 | . PTR in)); | |
476 | . | |
477 | . void (*_bfd_coff_swap_lineno_in) PARAMS (( | |
478 | . bfd *abfd, | |
479 | . PTR ext, | |
480 | . PTR in)); | |
481 | . | |
482 | ||
483 | Special entry points for gas to swap coff parts | |
484 | ||
485 | . unsigned int (*_bfd_coff_swap_aux_out) PARAMS (( | |
486 | . bfd *abfd, | |
487 | . PTR in, | |
488 | . int type, | |
489 | . int class, | |
490 | . PTR ext)); | |
491 | . | |
492 | . unsigned int (*_bfd_coff_swap_sym_out) PARAMS (( | |
493 | . bfd *abfd, | |
494 | . PTR in, | |
495 | . PTR ext)); | |
496 | . | |
497 | . unsigned int (*_bfd_coff_swap_lineno_out) PARAMS (( | |
498 | . bfd *abfd, | |
499 | . PTR in, | |
500 | . PTR ext)); | |
501 | . | |
502 | . unsigned int (*_bfd_coff_swap_reloc_out) PARAMS (( | |
503 | . bfd *abfd, | |
504 | . PTR src, | |
505 | . PTR dst)); | |
506 | . | |
507 | . unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS (( | |
508 | . bfd *abfd, | |
509 | . PTR in, | |
510 | . PTR out)); | |
511 | . | |
512 | . unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS (( | |
513 | . bfd *abfd, | |
514 | . PTR in, | |
515 | . PTR out)); | |
516 | . | |
517 | . unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS (( | |
518 | . bfd *abfd, | |
519 | . PTR in, | |
520 | . PTR out)); | |
521 | . | |
075caafd ILT |
522 | |
523 | Special entry points for generic COFF routines to call target | |
524 | dependent COFF routines | |
525 | ||
526 | . unsigned int _bfd_filhsz; | |
527 | . unsigned int _bfd_aoutsz; | |
528 | . unsigned int _bfd_scnhsz; | |
529 | . unsigned int _bfd_symesz; | |
530 | . unsigned int _bfd_auxesz; | |
531 | . unsigned int _bfd_linesz; | |
532 | . boolean _bfd_coff_long_filenames; | |
533 | . void (*_bfd_coff_swap_filehdr_in) PARAMS (( | |
534 | . bfd *abfd, | |
535 | . PTR ext, | |
536 | . PTR in)); | |
537 | . void (*_bfd_coff_swap_aouthdr_in) PARAMS (( | |
538 | . bfd *abfd, | |
539 | . PTR ext, | |
540 | . PTR in)); | |
541 | . void (*_bfd_coff_swap_scnhdr_in) PARAMS (( | |
542 | . bfd *abfd, | |
543 | . PTR ext, | |
544 | . PTR in)); | |
545 | . boolean (*_bfd_coff_bad_format_hook) PARAMS (( | |
546 | . bfd *abfd, | |
547 | . PTR internal_filehdr)); | |
548 | . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS (( | |
549 | . bfd *abfd, | |
550 | . PTR internal_filehdr)); | |
551 | . PTR (*_bfd_coff_mkobject_hook) PARAMS (( | |
552 | . bfd *abfd, | |
27f524a3 ILT |
553 | . PTR internal_filehdr, |
554 | . PTR internal_aouthdr)); | |
075caafd ILT |
555 | . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS (( |
556 | . bfd *abfd, | |
557 | . PTR internal_scnhdr)); | |
558 | . asection *(*_bfd_make_section_hook) PARAMS (( | |
559 | . bfd *abfd, | |
560 | . char *name)); | |
561 | . void (*_bfd_set_alignment_hook) PARAMS (( | |
562 | . bfd *abfd, | |
563 | . asection *sec, | |
564 | . PTR internal_scnhdr)); | |
565 | . boolean (*_bfd_coff_slurp_symbol_table) PARAMS (( | |
566 | . bfd *abfd)); | |
567 | . boolean (*_bfd_coff_symname_in_debug) PARAMS (( | |
568 | . bfd *abfd, | |
569 | . struct internal_syment *sym)); | |
570 | . void (*_bfd_coff_reloc16_extra_cases) PARAMS (( | |
571 | . bfd *abfd, | |
918356b9 | 572 | . struct bfd_seclet *seclet, |
075caafd ILT |
573 | . arelent *reloc, |
574 | . bfd_byte *data, | |
575 | . unsigned int *src_ptr, | |
576 | . unsigned int *dst_ptr)); | |
07de8e96 KR |
577 | .} bfd_coff_backend_data; |
578 | . | |
07de8e96 KR |
579 | .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data) |
580 | . | |
581 | .#define bfd_coff_swap_aux_in(a,e,t,c,i) \ | |
582 | . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,i)) | |
583 | . | |
584 | .#define bfd_coff_swap_sym_in(a,e,i) \ | |
585 | . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i)) | |
586 | . | |
587 | .#define bfd_coff_swap_lineno_in(a,e,i) \ | |
588 | . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i)) | |
589 | . | |
590 | .#define bfd_coff_swap_reloc_out(abfd, i, o) \ | |
591 | . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o)) | |
592 | . | |
593 | .#define bfd_coff_swap_lineno_out(abfd, i, o) \ | |
594 | . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o)) | |
595 | . | |
596 | .#define bfd_coff_swap_aux_out(abfd, i, t,c,o) \ | |
597 | . ((coff_backend_info (abfd)->_bfd_coff_swap_aux_out) (abfd, i,t,c, o)) | |
598 | . | |
599 | .#define bfd_coff_swap_sym_out(abfd, i,o) \ | |
600 | . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o)) | |
601 | . | |
602 | .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \ | |
603 | . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o)) | |
604 | . | |
605 | .#define bfd_coff_swap_filehdr_out(abfd, i,o) \ | |
606 | . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o)) | |
607 | . | |
608 | .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \ | |
609 | . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o)) | |
610 | . | |
075caafd ILT |
611 | .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz) |
612 | .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz) | |
613 | .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz) | |
614 | .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz) | |
615 | .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz) | |
616 | .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz) | |
617 | .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames) | |
618 | .#define bfd_coff_swap_filehdr_in(abfd, i,o) \ | |
619 | . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o)) | |
620 | . | |
621 | .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \ | |
622 | . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o)) | |
623 | . | |
624 | .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \ | |
625 | . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o)) | |
626 | . | |
627 | .#define bfd_coff_bad_format_hook(abfd, filehdr) \ | |
628 | . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr)) | |
629 | . | |
630 | .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\ | |
631 | . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr)) | |
27f524a3 ILT |
632 | .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\ |
633 | . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr)) | |
075caafd ILT |
634 | . |
635 | .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr)\ | |
636 | . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr)) | |
637 | . | |
638 | .#define bfd_coff_make_section_hook(abfd, name)\ | |
639 | . ((coff_backend_info (abfd)->_bfd_make_section_hook) (abfd, name)) | |
640 | . | |
641 | .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\ | |
642 | . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr)) | |
643 | . | |
644 | .#define bfd_coff_slurp_symbol_table(abfd)\ | |
645 | . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd)) | |
646 | . | |
647 | .#define bfd_coff_symname_in_debug(abfd, sym)\ | |
648 | . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym)) | |
649 | . | |
650 | .#define bfd_coff_reloc16_extra_cases(abfd, seclet, reloc, data, src_ptr, dst_ptr)\ | |
651 | . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\ | |
652 | . (abfd, seclet, reloc, data, src_ptr, dst_ptr)) | |
653 | . | |
07de8e96 | 654 | */ |
0f268757 | 655 | |
075caafd | 656 | /* See whether the magic number matches. */ |
7a8b18b6 | 657 | |
075caafd ILT |
658 | static boolean |
659 | DEFUN(coff_bad_format_hook, (abfd, filehdr), | |
660 | bfd *abfd AND | |
661 | PTR filehdr) | |
0f268757 | 662 | { |
075caafd | 663 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
0f268757 | 664 | |
075caafd ILT |
665 | if (BADMAG (*internal_f)) |
666 | return false; | |
0f268757 | 667 | |
075caafd ILT |
668 | /* if the optional header is NULL or not the correct size then |
669 | quit; the only difference I can see between m88k dgux headers (MC88DMAGIC) | |
670 | and Intel 960 readwrite headers (I960WRMAGIC) is that the | |
671 | optional header is of a different size. | |
cbdc7909 | 672 | |
075caafd ILT |
673 | But the mips keeps extra stuff in it's opthdr, so dont check |
674 | when doing that | |
675 | */ | |
0f268757 | 676 | |
075caafd ILT |
677 | #if defined(M88) || defined(I960) |
678 | if (internal_f->f_opthdr != 0 && AOUTSZ != internal_f->f_opthdr) | |
679 | return false; | |
0f268757 | 680 | #endif |
0f268757 | 681 | |
075caafd | 682 | return true; |
0f268757 SC |
683 | } |
684 | ||
075caafd ILT |
685 | static asection * |
686 | DEFUN (coff_make_section_hook, (abfd, name), | |
687 | bfd *abfd AND | |
688 | char *name) | |
0f268757 | 689 | { |
075caafd ILT |
690 | #ifdef TWO_DATA_SECS |
691 | /* On SCO a file created by the Microsoft assembler can have two | |
692 | .data sections. We use .data2 for the second one. */ | |
693 | if (strcmp (name, _DATA) == 0) | |
694 | return bfd_make_section (abfd, ".data2"); | |
0f268757 | 695 | #endif |
075caafd | 696 | return (asection *) NULL; |
0f268757 SC |
697 | } |
698 | ||
699 | /* | |
700 | initialize a section structure with information peculiar to this | |
701 | particular implementation of coff | |
702 | */ | |
703 | ||
075caafd | 704 | static boolean |
800aef7c SC |
705 | DEFUN(coff_new_section_hook,(abfd, section), |
706 | bfd *abfd AND | |
e98e6ec1 | 707 | asection *section) |
0f268757 | 708 | { |
8070f29d KR |
709 | section->alignment_power = abfd->xvec->align_power_min; |
710 | /* Allocate aux records for section symbols, to store size and | |
711 | related info. | |
712 | ||
713 | @@ Shouldn't use constant multiplier here! */ | |
714 | coffsymbol (section->symbol)->native = | |
715 | (combined_entry_type *) bfd_zalloc (abfd, | |
716 | sizeof (combined_entry_type) * 10); | |
0f268757 SC |
717 | return true; |
718 | } | |
719 | ||
0f268757 | 720 | |
0f268757 | 721 | #ifdef I960 |
e98e6ec1 | 722 | |
075caafd ILT |
723 | /* Set the alignment of a BFD section. */ |
724 | ||
725 | static void | |
726 | DEFUN (coff_set_alignment_hook, (abfd, section, scnhdr), | |
727 | bfd *abfd AND | |
728 | asection *section AND | |
729 | PTR scnhdr) | |
e98e6ec1 | 730 | { |
075caafd ILT |
731 | struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr; |
732 | unsigned int i; | |
733 | ||
734 | for (i = 0; i < 32; i++) | |
735 | if ((1 << i) >= hdr->s_align) | |
736 | break; | |
737 | section->alignment_power = i; | |
e98e6ec1 SC |
738 | } |
739 | ||
075caafd | 740 | #else /* ! I960 */ |
0f268757 | 741 | |
075caafd ILT |
742 | #define coff_set_alignment_hook \ |
743 | ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void) | |
41f50af0 | 744 | |
075caafd | 745 | #endif /* ! I960 */ |
0f268757 | 746 | |
0f268757 SC |
747 | static boolean |
748 | DEFUN(coff_mkobject,(abfd), | |
749 | bfd *abfd) | |
750 | { | |
075caafd ILT |
751 | coff_data_type *coff; |
752 | ||
753 | abfd->tdata.coff_obj_data = (struct coff_tdata *)bfd_zalloc (abfd,sizeof(coff_data_type)); | |
e98e6ec1 | 754 | if (abfd->tdata.coff_obj_data == 0){ |
0f268757 SC |
755 | bfd_error = no_memory; |
756 | return false; | |
757 | } | |
075caafd ILT |
758 | coff = coff_data (abfd); |
759 | coff->symbols = (coff_symbol_type *) NULL; | |
760 | coff->conversion_table = (unsigned int *) NULL; | |
761 | coff->raw_syments = (struct coff_ptr_struct *) NULL; | |
762 | coff->raw_linenos = (struct lineno *) NULL; | |
763 | coff->relocbase = 0; | |
6590a8c9 | 764 | /* make_abs_section(abfd);*/ |
0f268757 SC |
765 | return true; |
766 | } | |
767 | ||
075caafd ILT |
768 | /* Create the COFF backend specific information. */ |
769 | ||
770 | static PTR | |
27f524a3 | 771 | DEFUN(coff_mkobject_hook,(abfd, filehdr, aouthdr), |
075caafd | 772 | bfd *abfd AND |
27f524a3 ILT |
773 | PTR filehdr AND |
774 | PTR aouthdr) | |
0f268757 | 775 | { |
075caafd | 776 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
0f268757 | 777 | coff_data_type *coff; |
cbdc7909 | 778 | |
075caafd ILT |
779 | if (coff_mkobject (abfd) == false) |
780 | return NULL; | |
e98e6ec1 | 781 | |
075caafd | 782 | coff = coff_data (abfd); |
cbdc7909 | 783 | |
075caafd ILT |
784 | coff->sym_filepos = internal_f->f_symptr; |
785 | coff->flags = internal_f->f_flags; | |
cbdc7909 | 786 | |
075caafd ILT |
787 | /* These members communicate important constants about the symbol |
788 | table to GDB's symbol-reading code. These `constants' | |
789 | unfortunately vary among coff implementations... */ | |
790 | coff->local_n_btmask = N_BTMASK; | |
791 | coff->local_n_btshft = N_BTSHFT; | |
792 | coff->local_n_tmask = N_TMASK; | |
793 | coff->local_n_tshift = N_TSHIFT; | |
794 | coff->local_symesz = SYMESZ; | |
795 | coff->local_auxesz = AUXESZ; | |
796 | coff->local_linesz = LINESZ; | |
cbdc7909 | 797 | |
075caafd ILT |
798 | return (PTR) coff; |
799 | } | |
cbdc7909 | 800 | |
075caafd ILT |
801 | /* Determine the machine architecture and type. FIXME: This is target |
802 | dependent because the magic numbers are defined in the target | |
803 | dependent header files. But there is no particular need for this. | |
804 | If the magic numbers were moved to a separate file, this function | |
805 | would be target independent and would also be much more successful | |
806 | at linking together COFF files for different architectures. */ | |
cbdc7909 | 807 | |
075caafd ILT |
808 | static boolean |
809 | DEFUN (coff_set_arch_mach_hook, (abfd, filehdr), | |
810 | bfd *abfd AND | |
811 | PTR filehdr) | |
812 | { | |
813 | long machine; | |
814 | enum bfd_architecture arch; | |
815 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; | |
e98e6ec1 | 816 | |
075caafd | 817 | machine = 0; |
0f268757 | 818 | switch (internal_f->f_magic) { |
20fdc627 SC |
819 | #ifdef I386MAGIC |
820 | case I386MAGIC: | |
075caafd ILT |
821 | #ifdef I386AIXMAGIC |
822 | case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */ | |
60ac749c | 823 | #endif |
0d740984 SC |
824 | arch = bfd_arch_i386; |
825 | machine = 0; | |
20fdc627 SC |
826 | break; |
827 | #endif | |
cbdc7909 JG |
828 | |
829 | #ifdef A29K_MAGIC_BIG | |
41f50af0 SC |
830 | case A29K_MAGIC_BIG: |
831 | case A29K_MAGIC_LITTLE: | |
0d740984 SC |
832 | arch = bfd_arch_a29k; |
833 | machine = 0; | |
41f50af0 SC |
834 | break; |
835 | #endif | |
cbdc7909 | 836 | |
0f268757 SC |
837 | #ifdef MC68MAGIC |
838 | case MC68MAGIC: | |
839 | case M68MAGIC: | |
0d740984 SC |
840 | arch = bfd_arch_m68k; |
841 | machine = 68020; | |
0f268757 SC |
842 | break; |
843 | #endif | |
844 | #ifdef MC88MAGIC | |
845 | case MC88MAGIC: | |
846 | case MC88DMAGIC: | |
847 | case MC88OMAGIC: | |
0d740984 SC |
848 | arch = bfd_arch_m88k; |
849 | machine = 88100; | |
0f268757 SC |
850 | break; |
851 | #endif | |
dc999ad9 ILT |
852 | #ifdef Z8KMAGIC |
853 | case Z8KMAGIC: | |
854 | arch = bfd_arch_z8k; | |
855 | switch (internal_f->f_flags & F_MACHMASK) | |
075caafd ILT |
856 | { |
857 | case F_Z8001: | |
858 | machine = bfd_mach_z8001; | |
859 | break; | |
860 | case F_Z8002: | |
861 | machine = bfd_mach_z8002; | |
862 | break; | |
863 | default: | |
864 | return false; | |
865 | } | |
dc999ad9 ILT |
866 | break; |
867 | #endif | |
0f268757 SC |
868 | #ifdef I960 |
869 | #ifdef I960ROMAGIC | |
870 | case I960ROMAGIC: | |
871 | case I960RWMAGIC: | |
0d740984 | 872 | arch = bfd_arch_i960; |
cbdc7909 | 873 | switch (F_I960TYPE & internal_f->f_flags) |
0f268757 SC |
874 | { |
875 | default: | |
876 | case F_I960CORE: | |
0d740984 | 877 | machine = bfd_mach_i960_core; |
0f268757 SC |
878 | break; |
879 | case F_I960KB: | |
0d740984 | 880 | machine = bfd_mach_i960_kb_sb; |
0f268757 | 881 | break; |
0d740984 SC |
882 | case F_I960MC: |
883 | machine = bfd_mach_i960_mc; | |
0f268757 SC |
884 | break; |
885 | case F_I960XA: | |
0d740984 | 886 | machine = bfd_mach_i960_xa; |
0f268757 SC |
887 | break; |
888 | case F_I960CA: | |
0d740984 | 889 | machine = bfd_mach_i960_ca; |
0f268757 SC |
890 | break; |
891 | case F_I960KA: | |
0d740984 | 892 | machine = bfd_mach_i960_ka_sa; |
0f268757 | 893 | break; |
0f268757 SC |
894 | } |
895 | break; | |
896 | #endif | |
897 | #endif | |
cbdc7909 JG |
898 | |
899 | #ifdef U802ROMAGIC | |
900 | case U802ROMAGIC: | |
901 | case U802WRMAGIC: | |
902 | case U802TOCMAGIC: | |
903 | arch = bfd_arch_rs6000; | |
904 | machine = 6000; | |
905 | break; | |
906 | #endif | |
907 | ||
dc999ad9 ILT |
908 | #ifdef WE32KMAGIC |
909 | case WE32KMAGIC: | |
910 | arch = bfd_arch_we32k; | |
911 | machine = 0; | |
912 | break; | |
913 | #endif | |
914 | ||
3b4f1a5d SC |
915 | #ifdef H8300MAGIC |
916 | case H8300MAGIC: | |
917 | arch = bfd_arch_h8300; | |
918 | machine = 0; | |
142ce43e SC |
919 | /* !! FIXME this probably isn't the right place for this */ |
920 | abfd->flags |= BFD_IS_RELAXABLE; | |
921 | break; | |
922 | #endif | |
923 | ||
924 | #ifdef H8500MAGIC | |
925 | case H8500MAGIC: | |
926 | arch = bfd_arch_h8500; | |
927 | machine = 0; | |
3b4f1a5d SC |
928 | break; |
929 | #endif | |
cbdc7909 | 930 | |
075caafd ILT |
931 | default: /* Unreadable input file type */ |
932 | arch = bfd_arch_obscure; | |
933 | break; | |
934 | } | |
cbdc7909 | 935 | |
075caafd ILT |
936 | bfd_default_set_arch_mach(abfd, arch, machine); |
937 | return true; | |
938 | } | |
cbdc7909 | 939 | |
075caafd | 940 | #ifdef SYMNAME_IN_DEBUG |
6f715d66 | 941 | |
075caafd ILT |
942 | static boolean |
943 | DEFUN (symname_in_debug_hook, (abfd, sym), | |
944 | bfd *abfd AND | |
945 | struct internal_syment *sym) | |
946 | { | |
947 | return SYMNAME_IN_DEBUG (sym) ? true : false; | |
948 | } | |
6f715d66 | 949 | |
075caafd | 950 | #else |
cbdc7909 | 951 | |
075caafd ILT |
952 | #define symname_in_debug_hook \ |
953 | (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false | |
cbdc7909 | 954 | |
075caafd | 955 | #endif |
7a8b18b6 | 956 | |
9fda1a39 SC |
957 | /* |
958 | SUBSUBSECTION | |
959 | Writing Relocations | |
960 | ||
9fda1a39 SC |
961 | To write relocations, all the back end does is step though the |
962 | canonical relocation table, and create an | |
963 | @code{internal_reloc}. The symbol index to use is removed from | |
964 | the @code{offset} field in the symbol table supplied, the | |
965 | address comes directly from the sum of the section base | |
966 | address and the relocation offset and the type is dug directly | |
967 | from the howto field. Then the @code{internal_reloc} is | |
968 | swapped into the shape of an @code{external_reloc} and written | |
969 | out to disk. | |
970 | ||
6f715d66 | 971 | */ |
0f268757 | 972 | |
cbdc7909 | 973 | static void |
6f715d66 SC |
974 | DEFUN(coff_write_relocs,(abfd), |
975 | bfd *abfd) | |
976 | { | |
977 | asection *s; | |
978 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) { | |
979 | unsigned int i; | |
980 | struct external_reloc dst; | |
cbdc7909 | 981 | |
6f715d66 SC |
982 | arelent **p = s->orelocation; |
983 | bfd_seek(abfd, s->rel_filepos, SEEK_SET); | |
984 | for (i = 0; i < s->reloc_count; i++) { | |
985 | struct internal_reloc n; | |
986 | arelent *q = p[i]; | |
987 | memset((PTR)&n, 0, sizeof(n)); | |
9465d03e | 988 | |
6f715d66 | 989 | n.r_vaddr = q->address + s->vma; |
780c477a SC |
990 | /* The 29k const/consth reloc pair is a real kludge - the consth |
991 | part doesn't have a symbol - it has an offset. So rebuilt | |
992 | that here */ | |
993 | #ifdef R_IHCONST | |
994 | if (q->howto->type == R_IHCONST) | |
995 | n.r_symndx = q->addend; | |
996 | else | |
997 | #endif | |
998 | ||
c26d7d17 SC |
999 | |
1000 | if (q->sym_ptr_ptr) | |
1001 | { | |
1002 | if (q->sym_ptr_ptr == bfd_abs_section.symbol_ptr_ptr) | |
1003 | { | |
1004 | /* This is a relocation relative to the absolute symbol */ | |
1005 | n.r_symndx = -1; | |
1006 | } | |
1007 | else | |
1008 | { | |
1009 | n.r_symndx = get_index((*(q->sym_ptr_ptr))); | |
1010 | /* Take notice if the symbol reloc points to a symbol we don't have | |
1011 | in our symbol table. What should we do for this?? */ | |
1012 | if (n.r_symndx > obj_conv_table_size (abfd)) | |
1013 | abort (); | |
1014 | } | |
1015 | ||
1016 | ||
6f715d66 | 1017 | } |
c26d7d17 | 1018 | |
0f268757 | 1019 | #ifdef SELECT_RELOC |
6f715d66 SC |
1020 | /* Work out reloc type from what is required */ |
1021 | SELECT_RELOC(n.r_type, q->howto); | |
0f268757 | 1022 | #else |
6f715d66 | 1023 | n.r_type = q->howto->type; |
0f268757 | 1024 | #endif |
0d740984 | 1025 | coff_swap_reloc_out(abfd, &n, &dst); |
ce07dd7c | 1026 | bfd_write((PTR) &dst, 1, RELSZ, abfd); |
0f268757 SC |
1027 | } |
1028 | } | |
6f715d66 | 1029 | } |
7a8b18b6 SC |
1030 | |
1031 | /* Set flags and magic number of a coff file from architecture and machine | |
1032 | type. Result is true if we can represent the arch&type, false if not. */ | |
0f268757 | 1033 | |
0f268757 | 1034 | static boolean |
6f715d66 SC |
1035 | DEFUN(coff_set_flags,(abfd, magicp, flagsp), |
1036 | bfd *abfd AND | |
1037 | unsigned *magicp AND | |
1038 | unsigned short *flagsp) | |
1039 | { | |
0d740984 | 1040 | switch (bfd_get_arch(abfd)) { |
dc999ad9 ILT |
1041 | #ifdef Z8KMAGIC |
1042 | case bfd_arch_z8k: | |
1043 | *magicp = Z8KMAGIC; | |
1044 | switch (bfd_get_mach(abfd)) | |
1045 | { | |
1046 | case bfd_mach_z8001: | |
1047 | *flagsp = F_Z8001; | |
1048 | break; | |
1049 | case bfd_mach_z8002: | |
1050 | *flagsp = F_Z8002; | |
1051 | break; | |
1052 | default: | |
1053 | return false; | |
1054 | } | |
1055 | return true; | |
1056 | #endif | |
0f268757 | 1057 | #ifdef I960ROMAGIC |
cbdc7909 | 1058 | |
3b4f1a5d | 1059 | case bfd_arch_i960: |
cbdc7909 | 1060 | |
6f715d66 SC |
1061 | { |
1062 | unsigned flags; | |
1063 | *magicp = I960ROMAGIC; | |
1064 | /* | |
1065 | ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC : | |
1066 | I960RWMAGIC); FIXME??? | |
1067 | */ | |
0d740984 | 1068 | switch (bfd_get_mach(abfd)) { |
6f715d66 SC |
1069 | case bfd_mach_i960_core: |
1070 | flags = F_I960CORE; | |
1071 | break; | |
1072 | case bfd_mach_i960_kb_sb: | |
1073 | flags = F_I960KB; | |
1074 | break; | |
1075 | case bfd_mach_i960_mc: | |
1076 | flags = F_I960MC; | |
1077 | break; | |
1078 | case bfd_mach_i960_xa: | |
1079 | flags = F_I960XA; | |
1080 | break; | |
1081 | case bfd_mach_i960_ca: | |
1082 | flags = F_I960CA; | |
1083 | break; | |
1084 | case bfd_mach_i960_ka_sa: | |
1085 | flags = F_I960KA; | |
1086 | break; | |
1087 | default: | |
1088 | return false; | |
0f268757 | 1089 | } |
6f715d66 SC |
1090 | *flagsp = flags; |
1091 | return true; | |
1092 | } | |
1093 | break; | |
0f268757 | 1094 | #endif |
20fdc627 | 1095 | #ifdef I386MAGIC |
6f715d66 SC |
1096 | case bfd_arch_i386: |
1097 | *magicp = I386MAGIC; | |
1098 | return true; | |
dc999ad9 | 1099 | break; |
20fdc627 | 1100 | #endif |
0f268757 | 1101 | #ifdef MC68MAGIC |
6f715d66 SC |
1102 | case bfd_arch_m68k: |
1103 | *magicp = MC68MAGIC; | |
1104 | return true; | |
dc999ad9 | 1105 | break; |
0f268757 | 1106 | #endif |
cbdc7909 | 1107 | |
0f268757 | 1108 | #ifdef MC88MAGIC |
3b4f1a5d SC |
1109 | case bfd_arch_m88k: |
1110 | *magicp = MC88OMAGIC; | |
1111 | return true; | |
1112 | break; | |
1113 | #endif | |
1114 | #ifdef H8300MAGIC | |
1115 | case bfd_arch_h8300: | |
1116 | *magicp = H8300MAGIC; | |
1117 | return true; | |
1118 | break; | |
0f268757 | 1119 | #endif |
142ce43e SC |
1120 | #ifdef H8500MAGIC |
1121 | case bfd_arch_h8500: | |
1122 | *magicp = H8500MAGIC; | |
1123 | return true; | |
1124 | break; | |
1125 | #endif | |
41f50af0 | 1126 | #ifdef A29K_MAGIC_BIG |
3b4f1a5d SC |
1127 | case bfd_arch_a29k: |
1128 | if (abfd->xvec->byteorder_big_p) | |
1129 | *magicp = A29K_MAGIC_BIG; | |
1130 | else | |
1131 | *magicp = A29K_MAGIC_LITTLE; | |
1132 | return true; | |
1133 | break; | |
41f50af0 | 1134 | #endif |
cbdc7909 | 1135 | |
dc999ad9 ILT |
1136 | #ifdef WE32KMAGIC |
1137 | case bfd_arch_we32k: | |
1138 | *magicp = WE32KMAGIC; | |
1139 | return true; | |
1140 | break; | |
1141 | #endif | |
1142 | ||
cbdc7909 JG |
1143 | #ifdef U802TOCMAGIC |
1144 | case bfd_arch_rs6000: | |
1145 | *magicp = U802TOCMAGIC; | |
dc999ad9 | 1146 | return true; |
cbdc7909 JG |
1147 | break; |
1148 | #endif | |
1149 | ||
6f715d66 | 1150 | default: /* Unknown architecture */ |
8acc9e05 | 1151 | /* return false; -- fall through to "return false" below, to avoid |
cbdc7909 | 1152 | "statement never reached" errors on the one below. */ |
8acc9e05 | 1153 | break; |
0f268757 | 1154 | } |
cbdc7909 | 1155 | |
6f715d66 SC |
1156 | return false; |
1157 | } | |
0f268757 SC |
1158 | |
1159 | ||
1160 | static boolean | |
6f715d66 SC |
1161 | DEFUN(coff_set_arch_mach,(abfd, arch, machine), |
1162 | bfd *abfd AND | |
1163 | enum bfd_architecture arch AND | |
1164 | unsigned long machine) | |
1165 | { | |
0d740984 SC |
1166 | unsigned dummy1; |
1167 | unsigned short dummy2; | |
1168 | bfd_default_set_arch_mach(abfd, arch, machine); | |
1169 | ||
1170 | if (arch != bfd_arch_unknown && | |
1171 | coff_set_flags(abfd, &dummy1, &dummy2) != true) | |
1172 | return false; /* We can't represent this type */ | |
1173 | return true; /* We're easy ... */ | |
1174 | } | |
0f268757 SC |
1175 | |
1176 | ||
1177 | /* Calculate the file position for each section. */ | |
1178 | ||
cbdc7909 | 1179 | static void |
6f715d66 SC |
1180 | DEFUN(coff_compute_section_file_positions,(abfd), |
1181 | bfd *abfd) | |
1182 | { | |
e98e6ec1 SC |
1183 | asection *current; |
1184 | asection *previous = (asection *)NULL; | |
1185 | file_ptr sofar = FILHSZ; | |
55c95b04 | 1186 | #ifndef I960 |
e98e6ec1 | 1187 | file_ptr old_sofar; |
55c95b04 | 1188 | #endif |
e98e6ec1 SC |
1189 | if (bfd_get_start_address(abfd)) |
1190 | { | |
1191 | /* A start address may have been added to the original file. In this | |
1192 | case it will need an optional header to record it. */ | |
1193 | abfd->flags |= EXEC_P; | |
1194 | } | |
85e0c721 | 1195 | |
e98e6ec1 SC |
1196 | if (abfd->flags & EXEC_P) |
1197 | sofar += AOUTSZ; | |
cbdc7909 | 1198 | |
e98e6ec1 SC |
1199 | sofar += abfd->section_count * SCNHSZ; |
1200 | for (current = abfd->sections; | |
1201 | current != (asection *)NULL; | |
1202 | current = current->next) { | |
cbdc7909 | 1203 | |
e98e6ec1 SC |
1204 | /* Only deal with sections which have contents */ |
1205 | if (!(current->flags & SEC_HAS_CONTENTS)) | |
1206 | continue; | |
cbdc7909 | 1207 | |
e98e6ec1 SC |
1208 | /* Align the sections in the file to the same boundary on |
1209 | which they are aligned in virtual memory. I960 doesn't | |
1210 | do this (FIXME) so we can stay in sync with Intel. 960 | |
1211 | doesn't yet page from files... */ | |
0f268757 | 1212 | #ifndef I960 |
e98e6ec1 SC |
1213 | { |
1214 | /* make sure this section is aligned on the right boundary - by | |
1215 | padding the previous section up if necessary */ | |
1216 | ||
1217 | old_sofar= sofar; | |
1218 | sofar = BFD_ALIGN(sofar, 1 << current->alignment_power); | |
1219 | if (previous != (asection *)NULL) { | |
6590a8c9 | 1220 | previous->_raw_size += sofar - old_sofar; |
e98e6ec1 SC |
1221 | } |
1222 | } | |
85e0c721 | 1223 | |
0f268757 | 1224 | #endif |
e98e6ec1 SC |
1225 | /* FIXME, in demand paged files, the low order bits of the file |
1226 | offset must match the low order bits of the virtual address. | |
1227 | "Low order" is apparently implementation defined. Add code | |
1228 | here to round sofar up to match the virtual address. */ | |
cbdc7909 | 1229 | |
e98e6ec1 | 1230 | current->filepos = sofar; |
85e0c721 | 1231 | |
5e167886 KR |
1232 | sofar += current->_raw_size; |
1233 | #ifndef I960 | |
e98e6ec1 | 1234 | /* make sure that this section is of the right size too */ |
5e167886 | 1235 | old_sofar = sofar; |
e98e6ec1 SC |
1236 | sofar = BFD_ALIGN(sofar, 1 << current->alignment_power); |
1237 | current->_raw_size += sofar - old_sofar ; | |
5e167886 | 1238 | #endif |
85e0c721 | 1239 | |
35d835c4 JK |
1240 | #ifdef _LIB |
1241 | /* Force .lib sections to start at zero. The vma is then | |
1242 | incremented in coff_set_section_contents. This is right for | |
1243 | SVR3.2. */ | |
1244 | if (strcmp (current->name, _LIB) == 0) | |
1245 | bfd_set_section_vma (abfd, current, 0); | |
1246 | #endif | |
1247 | ||
e98e6ec1 | 1248 | previous = current; |
85e0c721 | 1249 | } |
e98e6ec1 | 1250 | obj_relocbase(abfd) = sofar; |
6f715d66 | 1251 | } |
0f268757 | 1252 | |
8070f29d KR |
1253 | /* If .file, .text, .data, .bss symbols are missing, add them. */ |
1254 | /* @@ Should we only be adding missing symbols, or overriding the aux | |
1255 | values for existing section symbols? */ | |
1256 | static void | |
1257 | coff_add_missing_symbols (abfd) | |
1258 | bfd *abfd; | |
1259 | { | |
1260 | unsigned int nsyms = bfd_get_symcount (abfd); | |
1261 | asymbol **sympp = abfd->outsymbols; | |
1262 | asymbol **sympp2; | |
1263 | unsigned int i; | |
1264 | int need_text = 1, need_data = 1, need_bss = 1, need_file = 1; | |
0f268757 | 1265 | |
8070f29d KR |
1266 | for (i = 0; i < nsyms; i++) |
1267 | { | |
1268 | coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]); | |
1269 | CONST char *name; | |
9465d03e SC |
1270 | if (csym) |
1271 | { | |
1272 | /* only do this if there is a coff representation of the input | |
1273 | symbol */ | |
1274 | if (csym->native && csym->native->u.syment.n_sclass == C_FILE) | |
8070f29d KR |
1275 | { |
1276 | need_file = 0; | |
1277 | continue; | |
1278 | } | |
9465d03e SC |
1279 | name = csym->symbol.name; |
1280 | if (!name) | |
1281 | continue; | |
1282 | if (!strcmp (name, _TEXT)) | |
1283 | need_text = 0; | |
1284 | else if (!strcmp (name, _DATA)) | |
1285 | need_data = 0; | |
1286 | else if (!strcmp (name, _BSS)) | |
1287 | need_bss = 0; | |
1288 | } | |
8070f29d KR |
1289 | } |
1290 | /* Now i == bfd_get_symcount (abfd). */ | |
1291 | /* @@ For now, don't deal with .file symbol. */ | |
1292 | need_file = 0; | |
1293 | ||
1294 | if (!need_text && !need_data && !need_bss && !need_file) | |
1295 | return; | |
1296 | nsyms += need_text + need_data + need_bss + need_file; | |
1297 | sympp2 = (asymbol**) bfd_alloc_by_size_t (abfd, nsyms * sizeof (asymbol *)); | |
1298 | memcpy (sympp2, sympp, i * sizeof (asymbol *)); | |
1299 | if (need_file) | |
1300 | { | |
1301 | /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */ | |
1302 | abort (); | |
1303 | } | |
1304 | if (need_text) | |
1305 | sympp2[i++] = coff_section_symbol (abfd, _TEXT); | |
1306 | if (need_data) | |
1307 | sympp2[i++] = coff_section_symbol (abfd, _DATA); | |
1308 | if (need_bss) | |
1309 | sympp2[i++] = coff_section_symbol (abfd, _BSS); | |
9465d03e | 1310 | BFD_ASSERT (i == nsyms); |
8070f29d KR |
1311 | bfd_set_symtab (abfd, sympp2, nsyms); |
1312 | } | |
0f268757 SC |
1313 | |
1314 | /* SUPPRESS 558 */ | |
1315 | /* SUPPRESS 529 */ | |
1316 | static boolean | |
1317 | DEFUN(coff_write_object_contents,(abfd), | |
6f715d66 | 1318 | bfd *abfd) |
e98e6ec1 SC |
1319 | { |
1320 | asection *current; | |
1321 | unsigned int count; | |
1322 | ||
1323 | boolean hasrelocs = false; | |
1324 | boolean haslinno = false; | |
1325 | file_ptr reloc_base; | |
1326 | file_ptr lineno_base; | |
1327 | file_ptr sym_base; | |
1328 | file_ptr scn_base; | |
1329 | file_ptr data_base; | |
1330 | unsigned long reloc_size = 0; | |
1331 | unsigned long lnno_size = 0; | |
1332 | asection *text_sec = NULL; | |
1333 | asection *data_sec = NULL; | |
1334 | asection *bss_sec = NULL; | |
cbdc7909 | 1335 | |
e98e6ec1 SC |
1336 | struct internal_filehdr internal_f; |
1337 | struct internal_aouthdr internal_a; | |
cbdc7909 | 1338 | |
cbdc7909 | 1339 | |
e98e6ec1 SC |
1340 | bfd_error = system_call_error; |
1341 | /* Number the output sections, starting from one on the first section | |
8070f29d KR |
1342 | with a name which doesn't start with a *. |
1343 | @@ The code doesn't make this check. Is it supposed to be done, | |
1344 | or isn't it?? */ | |
e98e6ec1 SC |
1345 | count = 1; |
1346 | for (current = abfd->sections; current != (asection *)NULL; | |
1347 | current = current->next) | |
1348 | { | |
e98e6ec1 | 1349 | current->target_index = count; |
8070f29d | 1350 | count++; |
e98e6ec1 | 1351 | } |
6590a8c9 | 1352 | |
e98e6ec1 | 1353 | if(abfd->output_has_begun == false) { |
6f715d66 SC |
1354 | coff_compute_section_file_positions(abfd); |
1355 | } | |
cbdc7909 | 1356 | |
e98e6ec1 | 1357 | if (abfd->sections != (asection *)NULL) { |
6f715d66 | 1358 | scn_base = abfd->sections->filepos; |
e98e6ec1 | 1359 | } |
0f268757 | 1360 | else { |
e98e6ec1 SC |
1361 | scn_base = 0; |
1362 | } | |
0f268757 | 1363 | if (bfd_seek(abfd, scn_base, SEEK_SET) != 0) |
e98e6ec1 | 1364 | return false; |
0f268757 | 1365 | reloc_base = obj_relocbase(abfd); |
cbdc7909 | 1366 | |
0f268757 SC |
1367 | /* Make a pass through the symbol table to count line number entries and |
1368 | put them into the correct asections */ | |
cbdc7909 | 1369 | |
27f524a3 | 1370 | lnno_size = coff_count_linenumbers(abfd) * LINESZ; |
0f268757 | 1371 | data_base = scn_base; |
cbdc7909 | 1372 | |
0f268757 | 1373 | /* Work out the size of the reloc and linno areas */ |
cbdc7909 | 1374 | |
e98e6ec1 SC |
1375 | for (current = abfd->sections; current != NULL; current = |
1376 | current->next) | |
1377 | { | |
1378 | /* We give section headers to +ve indexes */ | |
1379 | if (current->target_index > 0) | |
1380 | { | |
1381 | ||
1382 | reloc_size += current->reloc_count * RELSZ; | |
e98e6ec1 SC |
1383 | data_base += SCNHSZ; |
1384 | } | |
1385 | ||
0f268757 | 1386 | } |
cbdc7909 | 1387 | |
0f268757 SC |
1388 | lineno_base = reloc_base + reloc_size; |
1389 | sym_base = lineno_base + lnno_size; | |
cbdc7909 | 1390 | |
0f268757 | 1391 | /* Indicate in each section->line_filepos its actual file address */ |
e98e6ec1 SC |
1392 | for (current = abfd->sections; current != NULL; current = |
1393 | current->next) | |
1394 | { | |
1395 | if (current->target_index > 0) | |
1396 | { | |
1397 | ||
1398 | if (current->lineno_count) { | |
1399 | current->line_filepos = lineno_base; | |
1400 | current->moving_line_filepos = lineno_base; | |
e98e6ec1 | 1401 | lineno_base += current->lineno_count * LINESZ; |
e98e6ec1 SC |
1402 | } |
1403 | else { | |
1404 | current->line_filepos = 0; | |
1405 | } | |
1406 | if (current->reloc_count) { | |
1407 | current->rel_filepos = reloc_base; | |
54862c89 | 1408 | reloc_base += current->reloc_count * RELSZ; |
e98e6ec1 SC |
1409 | } |
1410 | else { | |
1411 | current->rel_filepos = 0; | |
1412 | } | |
0f268757 | 1413 | } |
e98e6ec1 SC |
1414 | } |
1415 | ||
cbdc7909 | 1416 | |
cbdc7909 | 1417 | |
e98e6ec1 SC |
1418 | /* Write section headers to the file. */ |
1419 | internal_f.f_nscns = 0; | |
0f268757 SC |
1420 | bfd_seek(abfd, |
1421 | (file_ptr) ((abfd->flags & EXEC_P) ? | |
1422 | (FILHSZ + AOUTSZ) : FILHSZ), | |
1423 | SEEK_SET); | |
cbdc7909 | 1424 | |
e98e6ec1 | 1425 | { |
0f268757 | 1426 | #if 0 |
e98e6ec1 | 1427 | unsigned int pad = abfd->flags & D_PAGED ? data_base : 0; |
0f268757 | 1428 | #endif |
e98e6ec1 | 1429 | unsigned int pad = 0; |
cbdc7909 | 1430 | |
e98e6ec1 SC |
1431 | for (current = abfd->sections; |
1432 | current != NULL; | |
1433 | current = current->next) { | |
1434 | struct internal_scnhdr section; | |
1435 | if (current->target_index > 0) | |
1436 | { | |
1437 | internal_f.f_nscns ++; | |
0f268757 | 1438 | strncpy(&(section.s_name[0]), current->name, 8); |
b26059aa ILT |
1439 | #ifdef _LIB |
1440 | /* Always set s_vaddr of .lib to 0. This is right for SVR3.2 | |
1441 | Ian Taylor <ian@cygnus.com>. */ | |
1442 | if (strcmp (current->name, _LIB) == 0) | |
1443 | section.s_vaddr = 0; | |
1444 | else | |
1445 | #endif | |
55c95b04 SC |
1446 | section.s_vaddr = current->lma + pad; |
1447 | section.s_paddr = current->lma + pad; | |
6590a8c9 | 1448 | section.s_size = current->_raw_size - pad; |
0f268757 SC |
1449 | /* |
1450 | If this section has no size or is unloadable then the scnptr | |
1451 | will be 0 too | |
1452 | */ | |
6590a8c9 | 1453 | if (current->_raw_size - pad == 0 || |
b26059aa | 1454 | (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) { |
e98e6ec1 SC |
1455 | section.s_scnptr = 0; |
1456 | } | |
0f268757 | 1457 | else { |
e98e6ec1 SC |
1458 | section.s_scnptr = current->filepos; |
1459 | } | |
0f268757 SC |
1460 | section.s_relptr = current->rel_filepos; |
1461 | section.s_lnnoptr = current->line_filepos; | |
1462 | section.s_nreloc = current->reloc_count; | |
1463 | section.s_nlnno = current->lineno_count; | |
1464 | if (current->reloc_count != 0) | |
e98e6ec1 | 1465 | hasrelocs = true; |
0f268757 | 1466 | if (current->lineno_count != 0) |
e98e6ec1 | 1467 | haslinno = true; |
cbdc7909 | 1468 | |
41f50af0 SC |
1469 | section.s_flags = sec_to_styp_flags(current->name,current->flags); |
1470 | ||
0f268757 | 1471 | if (!strcmp(current->name, _TEXT)) { |
e98e6ec1 SC |
1472 | text_sec = current; |
1473 | } else if (!strcmp(current->name, _DATA)) { | |
1474 | data_sec = current; | |
b26059aa ILT |
1475 | #ifdef TWO_DATA_SECS |
1476 | } else if (!strcmp(current->name, ".data2")) { | |
1477 | data_sec = current; | |
1478 | #endif /* TWO_DATA_SECS */ | |
e98e6ec1 SC |
1479 | } else if (!strcmp(current->name, _BSS)) { |
1480 | bss_sec = current; | |
1481 | } | |
cbdc7909 | 1482 | |
0f268757 SC |
1483 | #ifdef I960 |
1484 | section.s_align = (current->alignment_power | |
1485 | ? 1 << current->alignment_power | |
1486 | : 0); | |
1487 | ||
1488 | #endif | |
e98e6ec1 SC |
1489 | { |
1490 | SCNHDR buff; | |
0f268757 | 1491 | |
e98e6ec1 SC |
1492 | coff_swap_scnhdr_out(abfd, §ion, &buff); |
1493 | bfd_write((PTR) (&buff), 1, SCNHSZ, abfd); | |
1494 | ||
1495 | } | |
0f268757 | 1496 | |
0f268757 SC |
1497 | pad = 0; |
1498 | } | |
e98e6ec1 SC |
1499 | } |
1500 | } | |
1501 | ||
0f268757 SC |
1502 | |
1503 | /* OK, now set up the filehdr... */ | |
e98e6ec1 SC |
1504 | |
1505 | /* Don't include the internal abs section in the section count */ | |
1506 | ||
0f268757 SC |
1507 | /* |
1508 | We will NOT put a fucking timestamp in the header here. Every time you | |
17f9c817 | 1509 | put it back, I will come in and take it out again. I'm sorry. This |
0f268757 SC |
1510 | field does not belong here. We fill it with a 0 so it compares the |
1511 | same but is not a reasonable time. -- gnu@cygnus.com | |
1512 | */ | |
0f268757 | 1513 | internal_f.f_timdat = 0; |
0f268757 SC |
1514 | |
1515 | if (bfd_get_symcount(abfd) != 0) | |
e98e6ec1 | 1516 | internal_f.f_symptr = sym_base; |
0f268757 | 1517 | else |
e98e6ec1 | 1518 | internal_f.f_symptr = 0; |
0f268757 SC |
1519 | |
1520 | internal_f.f_flags = 0; | |
1521 | ||
1522 | if (abfd->flags & EXEC_P) | |
e98e6ec1 | 1523 | internal_f.f_opthdr = AOUTSZ; |
0f268757 | 1524 | else |
e98e6ec1 | 1525 | internal_f.f_opthdr = 0; |
0f268757 SC |
1526 | |
1527 | if (!hasrelocs) | |
e98e6ec1 | 1528 | internal_f.f_flags |= F_RELFLG; |
0f268757 | 1529 | if (!haslinno) |
e98e6ec1 | 1530 | internal_f.f_flags |= F_LNNO; |
0f268757 | 1531 | if (0 == bfd_get_symcount(abfd)) |
e98e6ec1 | 1532 | internal_f.f_flags |= F_LSYMS; |
0f268757 | 1533 | if (abfd->flags & EXEC_P) |
e98e6ec1 | 1534 | internal_f.f_flags |= F_EXEC; |
a0f3f080 | 1535 | |
0f268757 | 1536 | if (!abfd->xvec->byteorder_big_p) |
e98e6ec1 | 1537 | internal_f.f_flags |= F_AR32WR; |
a0f3f080 SC |
1538 | else |
1539 | internal_f.f_flags |= F_AR32W; | |
1540 | ||
0f268757 SC |
1541 | /* |
1542 | FIXME, should do something about the other byte orders and | |
1543 | architectures. | |
1544 | */ | |
1545 | ||
1546 | /* Set up architecture-dependent stuff */ | |
1547 | ||
e98e6ec1 SC |
1548 | { unsigned int magic = 0; |
1549 | unsigned short flags = 0; | |
1550 | coff_set_flags(abfd, &magic, &flags); | |
1551 | internal_f.f_magic = magic; | |
1552 | internal_f.f_flags |= flags; | |
1553 | /* ...and the "opt"hdr... */ | |
0f268757 | 1554 | |
cbdc7909 | 1555 | #ifdef A29K |
e98e6ec1 SC |
1556 | # ifdef ULTRA3 /* NYU's machine */ |
1557 | /* FIXME: This is a bogus check. I really want to see if there | |
1558 | * is a .shbss or a .shdata section, if so then set the magic | |
1559 | * number to indicate a shared data executable. | |
1560 | */ | |
1561 | if (internal_f.f_nscns >= 7) | |
1562 | internal_a.magic = SHMAGIC; /* Shared magic */ | |
1563 | else | |
1564 | # endif /* ULTRA3 */ | |
1565 | internal_a.magic = NMAGIC; /* Assume separate i/d */ | |
41f50af0 | 1566 | #define __A_MAGIC_SET__ |
e98e6ec1 | 1567 | #endif /* A29K */ |
0f268757 | 1568 | #ifdef I960 |
e98e6ec1 | 1569 | internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC); |
41f50af0 | 1570 | #define __A_MAGIC_SET__ |
e98e6ec1 | 1571 | #endif /* I960 */ |
0f268757 | 1572 | #if M88 |
41f50af0 | 1573 | #define __A_MAGIC_SET__ |
e98e6ec1 SC |
1574 | internal_a.magic = PAGEMAGICBCS; |
1575 | #endif /* M88 */ | |
41f50af0 | 1576 | |
1a8c6d5b | 1577 | #if M68 || WE32K |
41f50af0 | 1578 | #define __A_MAGIC_SET__ |
e98e6ec1 | 1579 | /* Never was anything here for the 68k */ |
1a8c6d5b | 1580 | #endif /* M68 || WE32K */ |
8ad2a31d SC |
1581 | |
1582 | #if I386 | |
1583 | # define __A_MAGIC_SET__ | |
1584 | internal_a.magic = ZMAGIC; | |
1585 | #endif /* I386 */ | |
41f50af0 | 1586 | |
cbdc7909 JG |
1587 | #if RS6000COFF_C |
1588 | #define __A_MAGIC_SET__ | |
e98e6ec1 SC |
1589 | internal_a.magic = (abfd->flags & D_PAGED)? RS6K_AOUTHDR_ZMAGIC: |
1590 | (abfd->flags & WP_TEXT)? RS6K_AOUTHDR_NMAGIC: | |
1591 | RS6K_AOUTHDR_OMAGIC; | |
cbdc7909 JG |
1592 | #endif |
1593 | ||
41f50af0 SC |
1594 | #ifndef __A_MAGIC_SET__ |
1595 | # include "Your aouthdr magic number is not being set!" | |
1596 | #else | |
1597 | # undef __A_MAGIC_SET__ | |
0f268757 | 1598 | #endif |
e98e6ec1 | 1599 | } |
0f268757 SC |
1600 | /* Now should write relocs, strings, syms */ |
1601 | obj_sym_filepos(abfd) = sym_base; | |
1602 | ||
1603 | if (bfd_get_symcount(abfd) != 0) { | |
8070f29d | 1604 | coff_add_missing_symbols (abfd); |
e98e6ec1 SC |
1605 | coff_renumber_symbols(abfd); |
1606 | coff_mangle_symbols(abfd); | |
1607 | coff_write_symbols(abfd); | |
1608 | coff_write_linenumbers(abfd); | |
1609 | coff_write_relocs(abfd); | |
1610 | } | |
0f268757 | 1611 | if (text_sec) { |
6590a8c9 | 1612 | internal_a.tsize = bfd_get_section_size_before_reloc(text_sec); |
e98e6ec1 SC |
1613 | internal_a.text_start = internal_a.tsize ? text_sec->vma : 0; |
1614 | } | |
0f268757 | 1615 | if (data_sec) { |
6590a8c9 | 1616 | internal_a.dsize = bfd_get_section_size_before_reloc(data_sec); |
e98e6ec1 SC |
1617 | internal_a.data_start = internal_a.dsize ? data_sec->vma : 0; |
1618 | } | |
0f268757 | 1619 | if (bss_sec) { |
6590a8c9 | 1620 | internal_a.bsize = bfd_get_section_size_before_reloc(bss_sec); |
e98e6ec1 | 1621 | } |
0f268757 SC |
1622 | |
1623 | internal_a.entry = bfd_get_start_address(abfd); | |
1624 | internal_f.f_nsyms = bfd_get_symcount(abfd); | |
1625 | ||
1626 | /* now write them */ | |
f8e01940 | 1627 | if (bfd_seek(abfd, (file_ptr) 0, SEEK_SET) != 0) |
e98e6ec1 SC |
1628 | return false; |
1629 | { | |
1630 | FILHDR buff; | |
859f11ff | 1631 | coff_swap_filehdr_out(abfd, (PTR)&internal_f, (PTR)&buff); |
e98e6ec1 SC |
1632 | bfd_write((PTR) &buff, 1, FILHSZ, abfd); |
1633 | } | |
0f268757 | 1634 | if (abfd->flags & EXEC_P) { |
e98e6ec1 | 1635 | AOUTHDR buff; |
859f11ff | 1636 | coff_swap_aouthdr_out(abfd, (PTR)&internal_a, (PTR)&buff); |
e98e6ec1 SC |
1637 | bfd_write((PTR) &buff, 1, AOUTSZ, abfd); |
1638 | } | |
0f268757 | 1639 | return true; |
6f715d66 SC |
1640 | } |
1641 | ||
0f268757 | 1642 | static boolean |
6f715d66 SC |
1643 | DEFUN(coff_set_section_contents,(abfd, section, location, offset, count), |
1644 | bfd *abfd AND | |
1645 | sec_ptr section AND | |
1646 | PTR location AND | |
1647 | file_ptr offset AND | |
41f50af0 | 1648 | bfd_size_type count) |
0f268757 SC |
1649 | { |
1650 | if (abfd->output_has_begun == false) /* set by bfd.c handler */ | |
075caafd | 1651 | coff_compute_section_file_positions(abfd); |
cbdc7909 | 1652 | |
075caafd ILT |
1653 | #ifdef _LIB |
1654 | /* If this is a .lib section, bump the vma address so that it | |
1655 | winds up being the number of .lib sections output. This is | |
1656 | right for SVR3.2. Shared libraries should probably get more | |
1657 | generic support. Ian Taylor <ian@cygnus.com>. */ | |
1658 | if (strcmp (section->name, _LIB) == 0) | |
35d835c4 | 1659 | ++section->lma; |
075caafd | 1660 | #endif |
0f268757 | 1661 | |
55c95b04 SC |
1662 | /* Don't write out bss sections - one way to do this is to |
1663 | see if the filepos has not been set. */ | |
1664 | if (section->filepos == 0) | |
1665 | return true; | |
1666 | ||
075caafd | 1667 | bfd_seek(abfd, (file_ptr) (section->filepos + offset), SEEK_SET); |
7a8b18b6 | 1668 | |
075caafd ILT |
1669 | if (count != 0) { |
1670 | return (bfd_write(location, 1, count, abfd) == count) ? true : false; | |
1671 | } | |
1672 | return true; | |
1673 | } | |
1674 | #if 0 | |
1675 | static boolean | |
1676 | coff_close_and_cleanup(abfd) | |
1677 | bfd *abfd; | |
0f268757 | 1678 | { |
075caafd ILT |
1679 | if (!bfd_read_p(abfd)) |
1680 | switch (abfd->format) { | |
1681 | case bfd_archive: | |
1682 | if (!_bfd_write_archive_contents(abfd)) | |
1683 | return false; | |
1684 | break; | |
1685 | case bfd_object: | |
1686 | if (!coff_write_object_contents(abfd)) | |
1687 | return false; | |
1688 | break; | |
1689 | default: | |
1690 | bfd_error = invalid_operation; | |
1691 | return false; | |
0f268757 | 1692 | } |
075caafd ILT |
1693 | |
1694 | /* We depend on bfd_close to free all the memory on the obstack. */ | |
1695 | /* FIXME if bfd_release is not using obstacks! */ | |
1696 | return true; | |
0f268757 SC |
1697 | } |
1698 | ||
075caafd ILT |
1699 | #endif |
1700 | ||
1701 | static PTR | |
1702 | buy_and_read(abfd, where, seek_direction, size) | |
1703 | bfd *abfd; | |
1704 | file_ptr where; | |
1705 | int seek_direction; | |
1706 | size_t size; | |
1707 | { | |
1708 | PTR area = (PTR) bfd_alloc(abfd, size); | |
1709 | if (!area) { | |
1710 | bfd_error = no_memory; | |
1711 | return (NULL); | |
1712 | } | |
1713 | bfd_seek(abfd, where, seek_direction); | |
1714 | if (bfd_read(area, 1, size, abfd) != size) { | |
1715 | bfd_error = system_call_error; | |
1716 | return (NULL); | |
1717 | } /* on error */ | |
1718 | return (area); | |
1719 | } /* buy_and_read() */ | |
0f268757 | 1720 | |
9fda1a39 SC |
1721 | /* |
1722 | SUBSUBSECTION | |
1723 | Reading Linenumbers | |
1724 | ||
9fda1a39 SC |
1725 | Creating the linenumber table is done by reading in the entire |
1726 | coff linenumber table, and creating another table for internal use. | |
6f715d66 | 1727 | |
9fda1a39 SC |
1728 | A coff line number table is structured so that each function |
1729 | is marked as having a line number of 0. Each line within the | |
1730 | function is an offset from the first line in the function. The | |
1731 | base of the line number information for the table is stored in | |
1732 | the symbol associated with the function. | |
6f715d66 | 1733 | |
9fda1a39 SC |
1734 | The information is copied from the external to the internal |
1735 | table, and each symbol which marks a function is marked by | |
1736 | pointing its... | |
6f715d66 | 1737 | |
9fda1a39 | 1738 | How does this work ? |
6f715d66 SC |
1739 | |
1740 | */ | |
0f268757 SC |
1741 | |
1742 | static boolean | |
1743 | coff_slurp_line_table(abfd, asect) | |
1744 | bfd *abfd; | |
1745 | asection *asect; | |
1746 | { | |
1747 | LINENO *native_lineno; | |
1748 | alent *lineno_cache; | |
cbdc7909 | 1749 | |
0f268757 | 1750 | BFD_ASSERT(asect->lineno == (alent *) NULL); |
cbdc7909 | 1751 | |
0f268757 SC |
1752 | native_lineno = (LINENO *) buy_and_read(abfd, |
1753 | asect->line_filepos, | |
1754 | SEEK_SET, | |
1755 | (size_t) (LINESZ * | |
1756 | asect->lineno_count)); | |
1757 | lineno_cache = | |
1758 | (alent *) bfd_alloc(abfd, (size_t) ((asect->lineno_count + 1) * sizeof(alent))); | |
1759 | if (lineno_cache == NULL) { | |
1760 | bfd_error = no_memory; | |
1761 | return false; | |
cbdc7909 | 1762 | } else { |
0f268757 SC |
1763 | unsigned int counter = 0; |
1764 | alent *cache_ptr = lineno_cache; | |
1765 | LINENO *src = native_lineno; | |
cbdc7909 | 1766 | |
0f268757 SC |
1767 | while (counter < asect->lineno_count) { |
1768 | struct internal_lineno dst; | |
2700c3c7 | 1769 | coff_swap_lineno_in(abfd, src, &dst); |
0f268757 | 1770 | cache_ptr->line_number = dst.l_lnno; |
cbdc7909 | 1771 | |
0f268757 SC |
1772 | if (cache_ptr->line_number == 0) { |
1773 | coff_symbol_type *sym = | |
1774 | (coff_symbol_type *) (dst.l_addr.l_symndx | |
6f715d66 | 1775 | + obj_raw_syments(abfd))->u.syment._n._n_n._n_zeroes; |
0f268757 SC |
1776 | cache_ptr->u.sym = (asymbol *) sym; |
1777 | sym->lineno = cache_ptr; | |
1778 | } | |
1779 | else { | |
1780 | cache_ptr->u.offset = dst.l_addr.l_paddr | |
1781 | - bfd_section_vma(abfd, asect); | |
1782 | } /* If no linenumber expect a symbol index */ | |
cbdc7909 | 1783 | |
0f268757 SC |
1784 | cache_ptr++; |
1785 | src++; | |
1786 | counter++; | |
1787 | } | |
1788 | cache_ptr->line_number = 0; | |
cbdc7909 | 1789 | |
0f268757 SC |
1790 | } |
1791 | asect->lineno = lineno_cache; | |
1792 | /* FIXME, free native_lineno here, or use alloca or something. */ | |
1793 | return true; | |
1794 | } /* coff_slurp_line_table() */ | |
1795 | ||
0f268757 SC |
1796 | static boolean |
1797 | DEFUN(coff_slurp_symbol_table,(abfd), | |
1798 | bfd *abfd) | |
6f715d66 SC |
1799 | { |
1800 | combined_entry_type *native_symbols; | |
1801 | coff_symbol_type *cached_area; | |
1802 | unsigned int *table_ptr; | |
cbdc7909 | 1803 | |
6f715d66 SC |
1804 | unsigned int number_of_symbols = 0; |
1805 | if (obj_symbols(abfd)) | |
1806 | return true; | |
1807 | bfd_seek(abfd, obj_sym_filepos(abfd), SEEK_SET); | |
cbdc7909 | 1808 | |
6f715d66 | 1809 | /* Read in the symbol table */ |
075caafd | 1810 | if ((native_symbols = coff_get_normalized_symtab(abfd)) == NULL) { |
6f715d66 SC |
1811 | return (false); |
1812 | } /* on error */ | |
cbdc7909 | 1813 | |
6f715d66 SC |
1814 | /* Allocate enough room for all the symbols in cached form */ |
1815 | cached_area = | |
1816 | (coff_symbol_type *) | |
1817 | bfd_alloc(abfd, (size_t) (bfd_get_symcount(abfd) * sizeof(coff_symbol_type))); | |
cbdc7909 | 1818 | |
6f715d66 SC |
1819 | if (cached_area == NULL) { |
1820 | bfd_error = no_memory; | |
1821 | return false; | |
1822 | } /* on error */ | |
1823 | table_ptr = | |
1824 | (unsigned int *) | |
1825 | bfd_alloc(abfd, (size_t) (bfd_get_symcount(abfd) * sizeof(unsigned int))); | |
cbdc7909 | 1826 | |
6f715d66 SC |
1827 | if (table_ptr == NULL) { |
1828 | bfd_error = no_memory; | |
1829 | return false; | |
85e0c721 SC |
1830 | } |
1831 | else | |
1832 | { | |
6f715d66 SC |
1833 | coff_symbol_type *dst = cached_area; |
1834 | unsigned int last_native_index = bfd_get_symcount(abfd); | |
1835 | unsigned int this_index = 0; | |
1836 | while (this_index < last_native_index) { | |
1837 | combined_entry_type *src = native_symbols + this_index; | |
1838 | table_ptr[this_index] = number_of_symbols; | |
1839 | dst->symbol.the_bfd = abfd; | |
cbdc7909 | 1840 | |
6f715d66 SC |
1841 | dst->symbol.name = (char *)(src->u.syment._n._n_n._n_offset); |
1842 | /* | |
1843 | We use the native name field to point to the cached field | |
1844 | */ | |
1845 | src->u.syment._n._n_n._n_zeroes = (int) dst; | |
075caafd ILT |
1846 | dst->symbol.section = coff_section_from_bfd_index(abfd, |
1847 | src->u.syment.n_scnum); | |
859f11ff SC |
1848 | dst->symbol.flags = 0; |
1849 | dst->done_lineno = false; | |
1850 | ||
6f715d66 | 1851 | switch (src->u.syment.n_sclass) { |
0f268757 | 1852 | #ifdef I960 |
6f715d66 | 1853 | case C_LEAFEXT: |
0f268757 | 1854 | #if 0 |
6f715d66 SC |
1855 | dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma; |
1856 | dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL; | |
1857 | dst->symbol.flags |= BSF_NOT_AT_END; | |
0f268757 | 1858 | #endif |
6f715d66 | 1859 | /* Fall through to next case */ |
cbdc7909 | 1860 | |
0f268757 | 1861 | #endif |
cbdc7909 | 1862 | |
6f715d66 | 1863 | case C_EXT: |
cbdc7909 JG |
1864 | #ifdef RS6000COFF_C |
1865 | case C_HIDEXT: | |
1866 | #endif | |
6f715d66 SC |
1867 | if ((src->u.syment.n_scnum) == 0) { |
1868 | if ((src->u.syment.n_value) == 0) { | |
e98e6ec1 | 1869 | dst->symbol.section = &bfd_und_section; |
6f715d66 SC |
1870 | dst->symbol.value= 0; |
1871 | } | |
1872 | else { | |
e98e6ec1 | 1873 | dst->symbol.section = &bfd_com_section; |
6f715d66 SC |
1874 | dst->symbol.value = (src->u.syment.n_value); |
1875 | } | |
1876 | } | |
1877 | else { | |
1878 | /* | |
1879 | Base the value as an index from the base of the | |
1880 | section | |
1881 | */ | |
e98e6ec1 | 1882 | |
6f715d66 SC |
1883 | dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL; |
1884 | dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma; | |
e98e6ec1 | 1885 | |
6f715d66 | 1886 | if (ISFCN((src->u.syment.n_type))) { |
0f268757 | 1887 | /* |
6f715d66 SC |
1888 | A function ext does not go at the end of a file |
1889 | */ | |
1890 | dst->symbol.flags |= BSF_NOT_AT_END; | |
0f268757 | 1891 | } |
6f715d66 | 1892 | } |
85e0c721 SC |
1893 | |
1894 | ||
6f715d66 | 1895 | break; |
cbdc7909 | 1896 | |
6f715d66 | 1897 | case C_STAT: /* static */ |
0f268757 | 1898 | #ifdef I960 |
6f715d66 | 1899 | case C_LEAFSTAT: /* static leaf procedure */ |
0f268757 | 1900 | #endif |
6f715d66 | 1901 | case C_LABEL: /* label */ |
0d740984 SC |
1902 | if (src->u.syment.n_scnum == -2) |
1903 | dst->symbol.flags = BSF_DEBUGGING; | |
1904 | else | |
1905 | dst->symbol.flags = BSF_LOCAL; | |
6f715d66 | 1906 | /* |
0d740984 SC |
1907 | Base the value as an index from the base of the section, if |
1908 | there is one | |
6f715d66 | 1909 | */ |
0d740984 SC |
1910 | if (dst->symbol.section) |
1911 | dst->symbol.value = (src->u.syment.n_value) - | |
1912 | dst->symbol.section->vma; | |
1913 | else | |
1914 | dst->symbol.value = (src->u.syment.n_value) ; | |
6f715d66 | 1915 | break; |
cbdc7909 | 1916 | |
6f715d66 SC |
1917 | case C_MOS: /* member of structure */ |
1918 | case C_EOS: /* end of structure */ | |
41f50af0 SC |
1919 | #ifdef NOTDEF /* C_AUTOARG has the same value */ |
1920 | #ifdef C_GLBLREG | |
1921 | case C_GLBLREG: /* A29k-specific storage class */ | |
1922 | #endif | |
1923 | #endif | |
6f715d66 SC |
1924 | case C_REGPARM: /* register parameter */ |
1925 | case C_REG: /* register variable */ | |
0f268757 | 1926 | #ifdef C_AUTOARG |
6f715d66 | 1927 | case C_AUTOARG: /* 960-specific storage class */ |
0f268757 | 1928 | #endif |
6f715d66 | 1929 | case C_TPDEF: /* type definition */ |
6f715d66 SC |
1930 | case C_ARG: |
1931 | case C_AUTO: /* automatic variable */ | |
1932 | case C_FIELD: /* bit field */ | |
1933 | case C_ENTAG: /* enumeration tag */ | |
1934 | case C_MOE: /* member of enumeration */ | |
1935 | case C_MOU: /* member of union */ | |
1936 | case C_UNTAG: /* union tag */ | |
6f715d66 SC |
1937 | dst->symbol.flags = BSF_DEBUGGING; |
1938 | dst->symbol.value = (src->u.syment.n_value); | |
1939 | break; | |
cbdc7909 | 1940 | |
6f715d66 SC |
1941 | case C_FILE: /* file name */ |
1942 | case C_STRTAG: /* structure tag */ | |
cbdc7909 JG |
1943 | #ifdef RS6000COFF_C |
1944 | case C_BINCL: /* beginning of include file */ | |
1945 | case C_EINCL: /* ending of include file */ | |
1946 | case C_GSYM: | |
1947 | case C_LSYM: | |
1948 | case C_PSYM: | |
1949 | case C_RSYM: | |
1950 | case C_RPSYM: | |
1951 | case C_STSYM: | |
1952 | case C_DECL: | |
1953 | case C_ENTRY: | |
1954 | case C_FUN: | |
1955 | case C_BSTAT: | |
1956 | case C_ESTAT: | |
1957 | #endif | |
6f715d66 SC |
1958 | dst->symbol.flags = BSF_DEBUGGING; |
1959 | dst->symbol.value = (src->u.syment.n_value); | |
6f715d66 | 1960 | break; |
cbdc7909 | 1961 | |
6f715d66 SC |
1962 | case C_BLOCK: /* ".bb" or ".eb" */ |
1963 | case C_FCN: /* ".bf" or ".ef" */ | |
41f50af0 | 1964 | case C_EFCN: /* physical end of function */ |
6f715d66 SC |
1965 | dst->symbol.flags = BSF_LOCAL; |
1966 | /* | |
1967 | Base the value as an index from the base of the section | |
1968 | */ | |
1969 | dst->symbol.value = (src->u.syment.n_value) - dst->symbol.section->vma; | |
6f715d66 | 1970 | break; |
cbdc7909 | 1971 | |
6f715d66 SC |
1972 | case C_NULL: |
1973 | case C_EXTDEF: /* external definition */ | |
1974 | case C_ULABEL: /* undefined label */ | |
1975 | case C_USTATIC: /* undefined static */ | |
1976 | case C_LINE: /* line # reformatted as symbol table entry */ | |
1977 | case C_ALIAS: /* duplicate tag */ | |
1978 | case C_HIDDEN: /* ext symbol in dmert public lib */ | |
6f715d66 | 1979 | default: |
cbdc7909 JG |
1980 | |
1981 | fprintf(stderr,"Unrecognized storage class %d\n", | |
41f50af0 | 1982 | src->u.syment.n_sclass); |
954d412a | 1983 | /* abort();*/ |
6f715d66 SC |
1984 | dst->symbol.flags = BSF_DEBUGGING; |
1985 | dst->symbol.value = (src->u.syment.n_value); | |
6f715d66 SC |
1986 | break; |
1987 | } | |
cbdc7909 | 1988 | |
6590a8c9 | 1989 | /* BFD_ASSERT(dst->symbol.flags != 0);*/ |
cbdc7909 | 1990 | |
6f715d66 | 1991 | dst->native = src; |
cbdc7909 | 1992 | |
6f715d66 SC |
1993 | dst->symbol.udata = 0; |
1994 | dst->lineno = (alent *) NULL; | |
1995 | this_index += (src->u.syment.n_numaux) + 1; | |
1996 | dst++; | |
1997 | number_of_symbols++; | |
1998 | } /* walk the native symtab */ | |
1999 | } /* bfdize the native symtab */ | |
cbdc7909 | 2000 | |
6f715d66 SC |
2001 | obj_symbols(abfd) = cached_area; |
2002 | obj_raw_syments(abfd) = native_symbols; | |
cbdc7909 | 2003 | |
8070f29d | 2004 | obj_conv_table_size (abfd) = bfd_get_symcount (abfd); |
6f715d66 SC |
2005 | bfd_get_symcount(abfd) = number_of_symbols; |
2006 | obj_convert(abfd) = table_ptr; | |
2007 | /* Slurp the line tables for each section too */ | |
2008 | { | |
2009 | asection *p; | |
2010 | p = abfd->sections; | |
2011 | while (p) { | |
2012 | coff_slurp_line_table(abfd, p); | |
2013 | p = p->next; | |
0f268757 | 2014 | } |
6f715d66 SC |
2015 | } |
2016 | return true; | |
2017 | } /* coff_slurp_symbol_table() */ | |
0f268757 | 2018 | |
9fda1a39 SC |
2019 | /* |
2020 | SUBSUBSECTION | |
2021 | Reading Relocations | |
2022 | ||
9fda1a39 SC |
2023 | Coff relocations are easily transformed into the internal BFD form |
2024 | (@code{arelent}). | |
2025 | ||
2026 | Reading a coff relocation table is done in the following stages: | |
2027 | ||
2028 | o The entire coff relocation table is read into memory. | |
2029 | ||
2030 | o Each relocation is processed in turn, first it is swapped from the | |
2031 | external to the internal form. | |
2032 | ||
2033 | o The symbol referenced in the relocation's symbol index is | |
2034 | turned intoa pointer into the canonical symbol table. Note | |
2035 | that this table is the same as the one returned by a call to | |
2036 | @code{bfd_canonicalize_symtab}. The back end will call the | |
2037 | routine and save the result if a canonicalization hasn't been done. | |
2038 | ||
2039 | o The reloc index is turned into a pointer to a howto | |
2040 | structure, in a back end specific way. For instance, the 386 | |
2041 | and 960 use the @code{r_type} to directly produce an index | |
2042 | into a howto table vector; the 88k subtracts a number from the | |
2043 | @code{r_type} field and creates an addend field. | |
2044 | ||
2045 | ||
6f715d66 SC |
2046 | */ |
2047 | ||
3b4f1a5d SC |
2048 | #ifndef CALC_ADDEND |
2049 | #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \ | |
0e238aa7 | 2050 | if (ptr && bfd_asymbol_bfd(ptr) == abfd \ |
3b4f1a5d SC |
2051 | && ((ptr->flags & BSF_OLD_COMMON)== 0)) \ |
2052 | { \ | |
2053 | cache_ptr->addend = -(ptr->section->vma + ptr->value); \ | |
2054 | } \ | |
2055 | else { \ | |
2056 | cache_ptr->addend = 0; \ | |
2057 | } | |
2058 | #endif | |
2059 | ||
0f268757 SC |
2060 | static boolean |
2061 | DEFUN(coff_slurp_reloc_table,(abfd, asect, symbols), | |
2062 | bfd *abfd AND | |
2063 | sec_ptr asect AND | |
2064 | asymbol **symbols) | |
85e0c721 | 2065 | { |
3b4f1a5d SC |
2066 | RELOC *native_relocs; |
2067 | arelent *reloc_cache; | |
2068 | arelent *cache_ptr; | |
2069 | ||
2070 | unsigned int idx; | |
2071 | ||
2072 | if (asect->relocation) | |
2073 | return true; | |
2074 | if (asect->reloc_count == 0) | |
2075 | return true; | |
2076 | if (asect->flags & SEC_CONSTRUCTOR) | |
2077 | return true; | |
3b4f1a5d SC |
2078 | if (!coff_slurp_symbol_table(abfd)) |
2079 | return false; | |
3b4f1a5d SC |
2080 | native_relocs = |
2081 | (RELOC *) buy_and_read(abfd, | |
2082 | asect->rel_filepos, | |
2083 | SEEK_SET, | |
2084 | (size_t) (RELSZ * | |
2085 | asect->reloc_count)); | |
2086 | reloc_cache = (arelent *) | |
2087 | bfd_alloc(abfd, (size_t) (asect->reloc_count * sizeof(arelent))); | |
2088 | ||
2089 | if (reloc_cache == NULL) { | |
2090 | bfd_error = no_memory; | |
2091 | return false; | |
2092 | } | |
2093 | ||
2094 | ||
2095 | for (idx = 0; idx < asect->reloc_count; idx ++) | |
2096 | { | |
616ebcfd | 2097 | #ifdef RELOC_PROCESSING |
3b4f1a5d | 2098 | struct internal_reloc dst; |
3b4f1a5d SC |
2099 | struct external_reloc *src; |
2100 | ||
2101 | cache_ptr = reloc_cache + idx; | |
2102 | src = native_relocs + idx; | |
3b4f1a5d SC |
2103 | bfd_swap_reloc_in(abfd, src, &dst); |
2104 | ||
9898b929 JG |
2105 | RELOC_PROCESSING(cache_ptr, &dst, symbols, abfd, asect); |
2106 | #else | |
616ebcfd SC |
2107 | struct internal_reloc dst; |
2108 | asymbol *ptr; | |
2109 | struct external_reloc *src; | |
2110 | ||
2111 | cache_ptr = reloc_cache + idx; | |
2112 | src = native_relocs + idx; | |
2113 | ||
2114 | bfd_swap_reloc_in(abfd, src, &dst); | |
2115 | ||
9898b929 JG |
2116 | |
2117 | cache_ptr->address = dst.r_vaddr; | |
2118 | ||
3b4f1a5d | 2119 | if (dst.r_symndx != -1) |
8070f29d KR |
2120 | { |
2121 | /* @@ Should never be greater than count of symbols! */ | |
2122 | if (dst.r_symndx >= obj_conv_table_size (abfd)) | |
2123 | abort (); | |
9898b929 JG |
2124 | cache_ptr->sym_ptr_ptr = symbols + obj_convert(abfd)[dst.r_symndx]; |
2125 | ptr = *(cache_ptr->sym_ptr_ptr); | |
8070f29d | 2126 | } |
3b4f1a5d | 2127 | else |
8070f29d KR |
2128 | { |
2129 | cache_ptr->sym_ptr_ptr= bfd_abs_section.symbol_ptr_ptr; | |
2130 | ptr = 0; | |
2131 | } | |
85e0c721 | 2132 | |
3b4f1a5d SC |
2133 | /* |
2134 | The symbols definitions that we have read in have been | |
2135 | relocated as if their sections started at 0. But the offsets | |
2136 | refering to the symbols in the raw data have not been | |
2137 | modified, so we have to have a negative addend to compensate. | |
2138 | ||
2139 | Note that symbols which used to be common must be left alone */ | |
cbdc7909 | 2140 | |
3b4f1a5d SC |
2141 | /* Calculate any reloc addend by looking at the symbol */ |
2142 | CALC_ADDEND(abfd, ptr, dst, cache_ptr); | |
cbdc7909 | 2143 | |
3b4f1a5d | 2144 | cache_ptr->address -= asect->vma; |
e98e6ec1 | 2145 | /* !! cache_ptr->section = (asection *) NULL;*/ |
20fdc627 | 2146 | |
3b4f1a5d | 2147 | /* Fill in the cache_ptr->howto field from dst.r_type */ |
e98e6ec1 | 2148 | RTYPE2HOWTO(cache_ptr, &dst); |
9898b929 JG |
2149 | #endif |
2150 | ||
2151 | } | |
cbdc7909 | 2152 | |
3b4f1a5d SC |
2153 | asect->relocation = reloc_cache; |
2154 | return true; | |
85e0c721 | 2155 | } |
0f268757 SC |
2156 | |
2157 | ||
2158 | /* This is stupid. This function should be a boolean predicate */ | |
2159 | static unsigned int | |
85e0c721 SC |
2160 | DEFUN(coff_canonicalize_reloc, (abfd, section, relptr, symbols), |
2161 | bfd *abfd AND | |
2162 | sec_ptr section AND | |
2163 | arelent **relptr AND | |
2164 | asymbol **symbols) | |
2165 | { | |
e98e6ec1 SC |
2166 | arelent *tblptr = section->relocation; |
2167 | unsigned int count = 0; | |
cbdc7909 | 2168 | |
cbdc7909 | 2169 | |
e98e6ec1 SC |
2170 | if (section->flags & SEC_CONSTRUCTOR) |
2171 | { | |
2172 | /* this section has relocs made up by us, they are not in the | |
2173 | file, so take them out of their chain and place them into | |
2174 | the data area provided */ | |
2175 | arelent_chain *chain = section->constructor_chain; | |
2176 | for (count = 0; count < section->reloc_count; count ++) | |
85e0c721 | 2177 | { |
e98e6ec1 SC |
2178 | *relptr ++ = &chain->relent; |
2179 | chain = chain->next; | |
85e0c721 | 2180 | } |
e98e6ec1 SC |
2181 | |
2182 | } | |
2183 | else | |
2184 | { | |
2185 | coff_slurp_reloc_table(abfd, section, symbols); | |
85e0c721 SC |
2186 | |
2187 | ||
e98e6ec1 SC |
2188 | tblptr = section->relocation; |
2189 | if (!tblptr) | |
2190 | return 0; | |
85e0c721 | 2191 | |
e98e6ec1 SC |
2192 | for (; count++ < section->reloc_count;) |
2193 | *relptr++ = tblptr++; | |
cbdc7909 | 2194 | |
85e0c721 | 2195 | |
e98e6ec1 SC |
2196 | } |
2197 | *relptr = 0; | |
2198 | return section->reloc_count; | |
85e0c721 | 2199 | } |
0f268757 | 2200 | |
0f268757 SC |
2201 | #ifdef GNU960 |
2202 | file_ptr | |
2203 | coff_sym_filepos(abfd) | |
2204 | bfd *abfd; | |
2205 | { | |
2206 | return obj_sym_filepos(abfd); | |
2207 | } | |
2208 | #endif | |
2209 | ||
075caafd ILT |
2210 | #ifndef coff_reloc16_extra_cases |
2211 | #define coff_reloc16_extra_cases \ | |
2212 | (void (*) PARAMS ((bfd *, bfd_seclet_type *, arelent *, bfd_byte *,\ | |
2213 | unsigned int *, unsigned int *))) abort | |
8ad2a31d | 2214 | #endif |
6590a8c9 | 2215 | |
785150c9 | 2216 | static CONST bfd_coff_backend_data bfd_coff_std_swap_table = { |
07de8e96 KR |
2217 | coff_swap_aux_in, coff_swap_sym_in, coff_swap_lineno_in, |
2218 | coff_swap_aux_out, coff_swap_sym_out, | |
2219 | coff_swap_lineno_out, coff_swap_reloc_out, | |
2220 | coff_swap_filehdr_out, coff_swap_aouthdr_out, | |
2221 | coff_swap_scnhdr_out, | |
075caafd ILT |
2222 | FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, LINESZ, |
2223 | #ifdef COFF_LONG_FILENAMES | |
2224 | true, | |
2225 | #else | |
2226 | false, | |
07de8e96 | 2227 | #endif |
075caafd ILT |
2228 | coff_swap_filehdr_in, coff_swap_aouthdr_in, coff_swap_scnhdr_in, |
2229 | coff_bad_format_hook, coff_set_arch_mach_hook, coff_mkobject_hook, | |
2230 | styp_to_sec_flags, coff_make_section_hook, coff_set_alignment_hook, | |
2231 | coff_slurp_symbol_table, symname_in_debug_hook, coff_reloc16_extra_cases | |
2232 | }; | |
0f268757 SC |
2233 | |
2234 | #define coff_core_file_failing_command _bfd_dummy_core_file_failing_command | |
2235 | #define coff_core_file_failing_signal _bfd_dummy_core_file_failing_signal | |
2236 | #define coff_core_file_matches_executable_p _bfd_dummy_core_file_matches_executable_p | |
2237 | #define coff_slurp_armap bfd_slurp_coff_armap | |
2238 | #define coff_slurp_extended_name_table _bfd_slurp_extended_name_table | |
2239 | #define coff_truncate_arname bfd_dont_truncate_arname | |
2240 | #define coff_openr_next_archived_file bfd_generic_openr_next_archived_file | |
2241 | #define coff_generic_stat_arch_elt bfd_generic_stat_arch_elt | |
2242 | #define coff_get_section_contents bfd_generic_get_section_contents | |
2243 | #define coff_close_and_cleanup bfd_generic_close_and_cleanup | |
6f715d66 | 2244 | |
1f29e30b | 2245 | #define coff_bfd_debug_info_start bfd_void |
6f715d66 | 2246 | #define coff_bfd_debug_info_end bfd_void |
1f29e30b JG |
2247 | #define coff_bfd_debug_info_accumulate \ |
2248 | (void (*) PARAMS ((bfd *, struct sec *))) bfd_void | |
6590a8c9 | 2249 | #define coff_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents |
1f29e30b | 2250 | #define coff_bfd_relax_section bfd_generic_relax_section |
0c2fae09 | 2251 | #define coff_bfd_seclet_link bfd_generic_seclet_link |
55c95b04 SC |
2252 | #define coff_bfd_reloc_type_lookup \ |
2253 | ((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr) |