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6d7c88c3 | 1 | /* Support for the generic parts of most COFF variants, for BFD. |
b26059aa | 2 | Copyright 1990, 1991, 1992 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 */ | |
341 | ||
342 | } | |
343 | /* Try and figure out what it should be */ | |
344 | else if (sec_flags & SEC_CODE) | |
345 | { | |
346 | styp_flags = STYP_TEXT; | |
347 | } | |
348 | else if (sec_flags & SEC_DATA) | |
349 | { | |
350 | styp_flags = STYP_DATA; | |
351 | } | |
352 | else if (sec_flags & SEC_READONLY) | |
353 | { | |
354 | #ifdef STYP_LIT /* 29k readonly text/data section */ | |
355 | styp_flags = STYP_LIT; | |
41f50af0 | 356 | #else |
47cf4997 SC |
357 | styp_flags = STYP_TEXT; |
358 | #endif /* STYP_LIT */ | |
359 | } | |
360 | else if (sec_flags & SEC_LOAD) | |
361 | { | |
362 | styp_flags = STYP_TEXT; | |
363 | } | |
364 | else { | |
365 | styp_flags = STYP_BSS; | |
366 | } | |
41f50af0 | 367 | |
b26059aa | 368 | #ifdef STYP_NOLOAD |
47cf4997 SC |
369 | if (sec_flags & SEC_NEVER_LOAD) |
370 | styp_flags |= STYP_NOLOAD; | |
b26059aa ILT |
371 | #endif |
372 | ||
47cf4997 | 373 | return(styp_flags); |
41f50af0 | 374 | } |
cbdc7909 | 375 | /* |
41f50af0 | 376 | * Return a word with SEC_* flags set to represent the incoming |
cbdc7909 JG |
377 | * STYP_* flags (from scnhdr.s_flags). The inverse of this |
378 | * function is sec_to_styp_flags(). | |
41f50af0 SC |
379 | * NOTE: If you add to/change this routine, you should mirror the changes |
380 | * in sec_to_styp_flags(). | |
381 | */ | |
cbdc7909 | 382 | static flagword |
075caafd ILT |
383 | DEFUN(styp_to_sec_flags, (abfd, hdr), |
384 | bfd *abfd AND | |
385 | PTR hdr) | |
41f50af0 | 386 | { |
075caafd ILT |
387 | struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr; |
388 | long styp_flags = internal_s->s_flags; | |
8070f29d | 389 | flagword sec_flags=0; |
41f50af0 | 390 | |
b26059aa ILT |
391 | #ifdef STYP_NOLOAD |
392 | if (styp_flags & STYP_NOLOAD) | |
393 | { | |
394 | sec_flags |= SEC_NEVER_LOAD; | |
395 | } | |
396 | #endif /* STYP_NOLOAD */ | |
397 | ||
8f718ed3 ILT |
398 | /* For 386 COFF, at least, an unloadable text or data section is |
399 | actually a shared library section. */ | |
400 | if (styp_flags & STYP_TEXT) | |
8070f29d | 401 | { |
8f718ed3 ILT |
402 | if (sec_flags & SEC_NEVER_LOAD) |
403 | sec_flags |= SEC_CODE | SEC_SHARED_LIBRARY; | |
404 | else | |
405 | sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC; | |
406 | } | |
407 | else if (styp_flags & STYP_DATA) | |
408 | { | |
409 | if (sec_flags & SEC_NEVER_LOAD) | |
410 | sec_flags |= SEC_DATA | SEC_SHARED_LIBRARY; | |
411 | else | |
412 | sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC; | |
8070f29d KR |
413 | } |
414 | else if (styp_flags & STYP_BSS) | |
415 | { | |
b26059aa | 416 | sec_flags |= SEC_ALLOC; |
8070f29d | 417 | } |
ce07dd7c KR |
418 | else if (styp_flags & STYP_INFO) |
419 | { | |
b26059aa | 420 | sec_flags |= SEC_NEVER_LOAD; |
ce07dd7c | 421 | } |
8070f29d KR |
422 | else |
423 | { | |
b26059aa | 424 | sec_flags |= SEC_ALLOC | SEC_LOAD; |
8070f29d | 425 | } |
b26059aa | 426 | |
8070f29d KR |
427 | #ifdef STYP_LIT /* A29k readonly text/data section type */ |
428 | if ((styp_flags & STYP_LIT) == STYP_LIT) | |
429 | { | |
430 | sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY); | |
431 | } | |
432 | #endif /* STYP_LIT */ | |
433 | #ifdef STYP_OTHER_LOAD /* Other loaded sections */ | |
434 | if (styp_flags & STYP_OTHER_LOAD) | |
435 | { | |
436 | sec_flags = (SEC_LOAD | SEC_ALLOC); | |
437 | } | |
438 | #endif /* STYP_SDATA */ | |
41f50af0 | 439 | |
8070f29d | 440 | return(sec_flags); |
41f50af0 | 441 | } |
0f268757 | 442 | |
54862c89 | 443 | #define get_index(symbol) ((int) (symbol)->udata) |
0f268757 | 444 | |
07de8e96 KR |
445 | /* |
446 | INTERNAL_DEFINITION | |
447 | bfd_coff_backend_data | |
448 | ||
449 | CODE_FRAGMENT | |
450 | ||
07de8e96 | 451 | Special entry points for gdb to swap in coff symbol table parts |
60ac749c ILT |
452 | .typedef struct |
453 | .{ | |
07de8e96 KR |
454 | . void (*_bfd_coff_swap_aux_in) PARAMS (( |
455 | . bfd *abfd , | |
456 | . PTR ext, | |
457 | . int type, | |
458 | . int class , | |
459 | . PTR in)); | |
460 | . | |
461 | . void (*_bfd_coff_swap_sym_in) PARAMS (( | |
462 | . bfd *abfd , | |
463 | . PTR ext, | |
464 | . PTR in)); | |
465 | . | |
466 | . void (*_bfd_coff_swap_lineno_in) PARAMS (( | |
467 | . bfd *abfd, | |
468 | . PTR ext, | |
469 | . PTR in)); | |
470 | . | |
471 | ||
472 | Special entry points for gas to swap coff parts | |
473 | ||
474 | . unsigned int (*_bfd_coff_swap_aux_out) PARAMS (( | |
475 | . bfd *abfd, | |
476 | . PTR in, | |
477 | . int type, | |
478 | . int class, | |
479 | . PTR ext)); | |
480 | . | |
481 | . unsigned int (*_bfd_coff_swap_sym_out) PARAMS (( | |
482 | . bfd *abfd, | |
483 | . PTR in, | |
484 | . PTR ext)); | |
485 | . | |
486 | . unsigned int (*_bfd_coff_swap_lineno_out) PARAMS (( | |
487 | . bfd *abfd, | |
488 | . PTR in, | |
489 | . PTR ext)); | |
490 | . | |
491 | . unsigned int (*_bfd_coff_swap_reloc_out) PARAMS (( | |
492 | . bfd *abfd, | |
493 | . PTR src, | |
494 | . PTR dst)); | |
495 | . | |
496 | . unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS (( | |
497 | . bfd *abfd, | |
498 | . PTR in, | |
499 | . PTR out)); | |
500 | . | |
501 | . unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS (( | |
502 | . bfd *abfd, | |
503 | . PTR in, | |
504 | . PTR out)); | |
505 | . | |
506 | . unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS (( | |
507 | . bfd *abfd, | |
508 | . PTR in, | |
509 | . PTR out)); | |
510 | . | |
075caafd ILT |
511 | |
512 | Special entry points for generic COFF routines to call target | |
513 | dependent COFF routines | |
514 | ||
515 | . unsigned int _bfd_filhsz; | |
516 | . unsigned int _bfd_aoutsz; | |
517 | . unsigned int _bfd_scnhsz; | |
518 | . unsigned int _bfd_symesz; | |
519 | . unsigned int _bfd_auxesz; | |
520 | . unsigned int _bfd_linesz; | |
521 | . boolean _bfd_coff_long_filenames; | |
522 | . void (*_bfd_coff_swap_filehdr_in) PARAMS (( | |
523 | . bfd *abfd, | |
524 | . PTR ext, | |
525 | . PTR in)); | |
526 | . void (*_bfd_coff_swap_aouthdr_in) PARAMS (( | |
527 | . bfd *abfd, | |
528 | . PTR ext, | |
529 | . PTR in)); | |
530 | . void (*_bfd_coff_swap_scnhdr_in) PARAMS (( | |
531 | . bfd *abfd, | |
532 | . PTR ext, | |
533 | . PTR in)); | |
534 | . boolean (*_bfd_coff_bad_format_hook) PARAMS (( | |
535 | . bfd *abfd, | |
536 | . PTR internal_filehdr)); | |
537 | . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS (( | |
538 | . bfd *abfd, | |
539 | . PTR internal_filehdr)); | |
540 | . PTR (*_bfd_coff_mkobject_hook) PARAMS (( | |
541 | . bfd *abfd, | |
542 | . PTR internal_filehdr)); | |
543 | . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS (( | |
544 | . bfd *abfd, | |
545 | . PTR internal_scnhdr)); | |
546 | . asection *(*_bfd_make_section_hook) PARAMS (( | |
547 | . bfd *abfd, | |
548 | . char *name)); | |
549 | . void (*_bfd_set_alignment_hook) PARAMS (( | |
550 | . bfd *abfd, | |
551 | . asection *sec, | |
552 | . PTR internal_scnhdr)); | |
553 | . boolean (*_bfd_coff_slurp_symbol_table) PARAMS (( | |
554 | . bfd *abfd)); | |
555 | . boolean (*_bfd_coff_symname_in_debug) PARAMS (( | |
556 | . bfd *abfd, | |
557 | . struct internal_syment *sym)); | |
558 | . void (*_bfd_coff_reloc16_extra_cases) PARAMS (( | |
559 | . bfd *abfd, | |
560 | . bfd_seclet_type *seclet, | |
561 | . arelent *reloc, | |
562 | . bfd_byte *data, | |
563 | . unsigned int *src_ptr, | |
564 | . unsigned int *dst_ptr)); | |
07de8e96 KR |
565 | .} bfd_coff_backend_data; |
566 | . | |
07de8e96 KR |
567 | .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data) |
568 | . | |
569 | .#define bfd_coff_swap_aux_in(a,e,t,c,i) \ | |
570 | . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,i)) | |
571 | . | |
572 | .#define bfd_coff_swap_sym_in(a,e,i) \ | |
573 | . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i)) | |
574 | . | |
575 | .#define bfd_coff_swap_lineno_in(a,e,i) \ | |
576 | . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i)) | |
577 | . | |
578 | .#define bfd_coff_swap_reloc_out(abfd, i, o) \ | |
579 | . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o)) | |
580 | . | |
581 | .#define bfd_coff_swap_lineno_out(abfd, i, o) \ | |
582 | . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o)) | |
583 | . | |
584 | .#define bfd_coff_swap_aux_out(abfd, i, t,c,o) \ | |
585 | . ((coff_backend_info (abfd)->_bfd_coff_swap_aux_out) (abfd, i,t,c, o)) | |
586 | . | |
587 | .#define bfd_coff_swap_sym_out(abfd, i,o) \ | |
588 | . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o)) | |
589 | . | |
590 | .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \ | |
591 | . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o)) | |
592 | . | |
593 | .#define bfd_coff_swap_filehdr_out(abfd, i,o) \ | |
594 | . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o)) | |
595 | . | |
596 | .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \ | |
597 | . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o)) | |
598 | . | |
075caafd ILT |
599 | .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz) |
600 | .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz) | |
601 | .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz) | |
602 | .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz) | |
603 | .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz) | |
604 | .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz) | |
605 | .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames) | |
606 | .#define bfd_coff_swap_filehdr_in(abfd, i,o) \ | |
607 | . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o)) | |
608 | . | |
609 | .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \ | |
610 | . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o)) | |
611 | . | |
612 | .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \ | |
613 | . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o)) | |
614 | . | |
615 | .#define bfd_coff_bad_format_hook(abfd, filehdr) \ | |
616 | . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr)) | |
617 | . | |
618 | .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\ | |
619 | . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr)) | |
620 | .#define bfd_coff_mkobject_hook(abfd, filehdr)\ | |
621 | . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr)) | |
622 | . | |
623 | .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr)\ | |
624 | . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr)) | |
625 | . | |
626 | .#define bfd_coff_make_section_hook(abfd, name)\ | |
627 | . ((coff_backend_info (abfd)->_bfd_make_section_hook) (abfd, name)) | |
628 | . | |
629 | .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\ | |
630 | . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr)) | |
631 | . | |
632 | .#define bfd_coff_slurp_symbol_table(abfd)\ | |
633 | . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd)) | |
634 | . | |
635 | .#define bfd_coff_symname_in_debug(abfd, sym)\ | |
636 | . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym)) | |
637 | . | |
638 | .#define bfd_coff_reloc16_extra_cases(abfd, seclet, reloc, data, src_ptr, dst_ptr)\ | |
639 | . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\ | |
640 | . (abfd, seclet, reloc, data, src_ptr, dst_ptr)) | |
641 | . | |
07de8e96 | 642 | */ |
0f268757 | 643 | |
075caafd | 644 | /* See whether the magic number matches. */ |
7a8b18b6 | 645 | |
075caafd ILT |
646 | static boolean |
647 | DEFUN(coff_bad_format_hook, (abfd, filehdr), | |
648 | bfd *abfd AND | |
649 | PTR filehdr) | |
0f268757 | 650 | { |
075caafd | 651 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
0f268757 | 652 | |
075caafd ILT |
653 | if (BADMAG (*internal_f)) |
654 | return false; | |
0f268757 | 655 | |
075caafd ILT |
656 | /* if the optional header is NULL or not the correct size then |
657 | quit; the only difference I can see between m88k dgux headers (MC88DMAGIC) | |
658 | and Intel 960 readwrite headers (I960WRMAGIC) is that the | |
659 | optional header is of a different size. | |
cbdc7909 | 660 | |
075caafd ILT |
661 | But the mips keeps extra stuff in it's opthdr, so dont check |
662 | when doing that | |
663 | */ | |
0f268757 | 664 | |
075caafd ILT |
665 | #if defined(M88) || defined(I960) |
666 | if (internal_f->f_opthdr != 0 && AOUTSZ != internal_f->f_opthdr) | |
667 | return false; | |
0f268757 | 668 | #endif |
0f268757 | 669 | |
075caafd | 670 | return true; |
0f268757 SC |
671 | } |
672 | ||
075caafd ILT |
673 | static asection * |
674 | DEFUN (coff_make_section_hook, (abfd, name), | |
675 | bfd *abfd AND | |
676 | char *name) | |
0f268757 | 677 | { |
075caafd ILT |
678 | #ifdef TWO_DATA_SECS |
679 | /* On SCO a file created by the Microsoft assembler can have two | |
680 | .data sections. We use .data2 for the second one. */ | |
681 | if (strcmp (name, _DATA) == 0) | |
682 | return bfd_make_section (abfd, ".data2"); | |
0f268757 | 683 | #endif |
075caafd | 684 | return (asection *) NULL; |
0f268757 SC |
685 | } |
686 | ||
687 | /* | |
688 | initialize a section structure with information peculiar to this | |
689 | particular implementation of coff | |
690 | */ | |
691 | ||
075caafd | 692 | static boolean |
800aef7c SC |
693 | DEFUN(coff_new_section_hook,(abfd, section), |
694 | bfd *abfd AND | |
e98e6ec1 | 695 | asection *section) |
0f268757 | 696 | { |
8070f29d KR |
697 | section->alignment_power = abfd->xvec->align_power_min; |
698 | /* Allocate aux records for section symbols, to store size and | |
699 | related info. | |
700 | ||
701 | @@ Shouldn't use constant multiplier here! */ | |
702 | coffsymbol (section->symbol)->native = | |
703 | (combined_entry_type *) bfd_zalloc (abfd, | |
704 | sizeof (combined_entry_type) * 10); | |
0f268757 SC |
705 | return true; |
706 | } | |
707 | ||
0f268757 | 708 | |
0f268757 | 709 | #ifdef I960 |
e98e6ec1 | 710 | |
075caafd ILT |
711 | /* Set the alignment of a BFD section. */ |
712 | ||
713 | static void | |
714 | DEFUN (coff_set_alignment_hook, (abfd, section, scnhdr), | |
715 | bfd *abfd AND | |
716 | asection *section AND | |
717 | PTR scnhdr) | |
e98e6ec1 | 718 | { |
075caafd ILT |
719 | struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr; |
720 | unsigned int i; | |
721 | ||
722 | for (i = 0; i < 32; i++) | |
723 | if ((1 << i) >= hdr->s_align) | |
724 | break; | |
725 | section->alignment_power = i; | |
e98e6ec1 SC |
726 | } |
727 | ||
075caafd | 728 | #else /* ! I960 */ |
0f268757 | 729 | |
075caafd ILT |
730 | #define coff_set_alignment_hook \ |
731 | ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void) | |
41f50af0 | 732 | |
075caafd | 733 | #endif /* ! I960 */ |
0f268757 | 734 | |
0f268757 SC |
735 | static boolean |
736 | DEFUN(coff_mkobject,(abfd), | |
737 | bfd *abfd) | |
738 | { | |
075caafd ILT |
739 | coff_data_type *coff; |
740 | ||
741 | abfd->tdata.coff_obj_data = (struct coff_tdata *)bfd_zalloc (abfd,sizeof(coff_data_type)); | |
e98e6ec1 | 742 | if (abfd->tdata.coff_obj_data == 0){ |
0f268757 SC |
743 | bfd_error = no_memory; |
744 | return false; | |
745 | } | |
075caafd ILT |
746 | coff = coff_data (abfd); |
747 | coff->symbols = (coff_symbol_type *) NULL; | |
748 | coff->conversion_table = (unsigned int *) NULL; | |
749 | coff->raw_syments = (struct coff_ptr_struct *) NULL; | |
750 | coff->raw_linenos = (struct lineno *) NULL; | |
751 | coff->relocbase = 0; | |
6590a8c9 | 752 | /* make_abs_section(abfd);*/ |
0f268757 SC |
753 | return true; |
754 | } | |
755 | ||
075caafd ILT |
756 | /* Create the COFF backend specific information. */ |
757 | ||
758 | static PTR | |
759 | DEFUN(coff_mkobject_hook,(abfd, filehdr), | |
760 | bfd *abfd AND | |
761 | PTR filehdr) | |
0f268757 | 762 | { |
075caafd | 763 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
0f268757 | 764 | coff_data_type *coff; |
cbdc7909 | 765 | |
075caafd ILT |
766 | if (coff_mkobject (abfd) == false) |
767 | return NULL; | |
e98e6ec1 | 768 | |
075caafd | 769 | coff = coff_data (abfd); |
cbdc7909 | 770 | |
075caafd ILT |
771 | coff->sym_filepos = internal_f->f_symptr; |
772 | coff->flags = internal_f->f_flags; | |
cbdc7909 | 773 | |
075caafd ILT |
774 | /* These members communicate important constants about the symbol |
775 | table to GDB's symbol-reading code. These `constants' | |
776 | unfortunately vary among coff implementations... */ | |
777 | coff->local_n_btmask = N_BTMASK; | |
778 | coff->local_n_btshft = N_BTSHFT; | |
779 | coff->local_n_tmask = N_TMASK; | |
780 | coff->local_n_tshift = N_TSHIFT; | |
781 | coff->local_symesz = SYMESZ; | |
782 | coff->local_auxesz = AUXESZ; | |
783 | coff->local_linesz = LINESZ; | |
cbdc7909 | 784 | |
075caafd ILT |
785 | return (PTR) coff; |
786 | } | |
cbdc7909 | 787 | |
075caafd ILT |
788 | /* Determine the machine architecture and type. FIXME: This is target |
789 | dependent because the magic numbers are defined in the target | |
790 | dependent header files. But there is no particular need for this. | |
791 | If the magic numbers were moved to a separate file, this function | |
792 | would be target independent and would also be much more successful | |
793 | at linking together COFF files for different architectures. */ | |
cbdc7909 | 794 | |
075caafd ILT |
795 | static boolean |
796 | DEFUN (coff_set_arch_mach_hook, (abfd, filehdr), | |
797 | bfd *abfd AND | |
798 | PTR filehdr) | |
799 | { | |
800 | long machine; | |
801 | enum bfd_architecture arch; | |
802 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; | |
e98e6ec1 | 803 | |
075caafd | 804 | machine = 0; |
0f268757 | 805 | switch (internal_f->f_magic) { |
20fdc627 SC |
806 | #ifdef I386MAGIC |
807 | case I386MAGIC: | |
075caafd ILT |
808 | #ifdef I386AIXMAGIC |
809 | case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */ | |
60ac749c | 810 | #endif |
0d740984 SC |
811 | arch = bfd_arch_i386; |
812 | machine = 0; | |
20fdc627 SC |
813 | break; |
814 | #endif | |
cbdc7909 JG |
815 | |
816 | #ifdef A29K_MAGIC_BIG | |
41f50af0 SC |
817 | case A29K_MAGIC_BIG: |
818 | case A29K_MAGIC_LITTLE: | |
0d740984 SC |
819 | arch = bfd_arch_a29k; |
820 | machine = 0; | |
41f50af0 SC |
821 | break; |
822 | #endif | |
cbdc7909 | 823 | |
0f268757 | 824 | #ifdef MIPS |
20fdc627 SC |
825 | case MIPS_MAGIC_1: |
826 | case MIPS_MAGIC_2: | |
827 | case MIPS_MAGIC_3: | |
0d740984 SC |
828 | arch = bfd_arch_mips; |
829 | machine = 0; | |
0f268757 SC |
830 | break; |
831 | #endif | |
cbdc7909 | 832 | |
0f268757 SC |
833 | #ifdef MC68MAGIC |
834 | case MC68MAGIC: | |
835 | case M68MAGIC: | |
0d740984 SC |
836 | arch = bfd_arch_m68k; |
837 | machine = 68020; | |
0f268757 SC |
838 | break; |
839 | #endif | |
840 | #ifdef MC88MAGIC | |
841 | case MC88MAGIC: | |
842 | case MC88DMAGIC: | |
843 | case MC88OMAGIC: | |
0d740984 SC |
844 | arch = bfd_arch_m88k; |
845 | machine = 88100; | |
0f268757 SC |
846 | break; |
847 | #endif | |
dc999ad9 ILT |
848 | #ifdef Z8KMAGIC |
849 | case Z8KMAGIC: | |
850 | arch = bfd_arch_z8k; | |
851 | switch (internal_f->f_flags & F_MACHMASK) | |
075caafd ILT |
852 | { |
853 | case F_Z8001: | |
854 | machine = bfd_mach_z8001; | |
855 | break; | |
856 | case F_Z8002: | |
857 | machine = bfd_mach_z8002; | |
858 | break; | |
859 | default: | |
860 | return false; | |
861 | } | |
dc999ad9 ILT |
862 | break; |
863 | #endif | |
0f268757 SC |
864 | #ifdef I960 |
865 | #ifdef I960ROMAGIC | |
866 | case I960ROMAGIC: | |
867 | case I960RWMAGIC: | |
0d740984 | 868 | arch = bfd_arch_i960; |
cbdc7909 | 869 | switch (F_I960TYPE & internal_f->f_flags) |
0f268757 SC |
870 | { |
871 | default: | |
872 | case F_I960CORE: | |
0d740984 | 873 | machine = bfd_mach_i960_core; |
0f268757 SC |
874 | break; |
875 | case F_I960KB: | |
0d740984 | 876 | machine = bfd_mach_i960_kb_sb; |
0f268757 | 877 | break; |
0d740984 SC |
878 | case F_I960MC: |
879 | machine = bfd_mach_i960_mc; | |
0f268757 SC |
880 | break; |
881 | case F_I960XA: | |
0d740984 | 882 | machine = bfd_mach_i960_xa; |
0f268757 SC |
883 | break; |
884 | case F_I960CA: | |
0d740984 | 885 | machine = bfd_mach_i960_ca; |
0f268757 SC |
886 | break; |
887 | case F_I960KA: | |
0d740984 | 888 | machine = bfd_mach_i960_ka_sa; |
0f268757 | 889 | break; |
0f268757 SC |
890 | } |
891 | break; | |
892 | #endif | |
893 | #endif | |
cbdc7909 JG |
894 | |
895 | #ifdef U802ROMAGIC | |
896 | case U802ROMAGIC: | |
897 | case U802WRMAGIC: | |
898 | case U802TOCMAGIC: | |
899 | arch = bfd_arch_rs6000; | |
900 | machine = 6000; | |
901 | break; | |
902 | #endif | |
903 | ||
dc999ad9 ILT |
904 | #ifdef WE32KMAGIC |
905 | case WE32KMAGIC: | |
906 | arch = bfd_arch_we32k; | |
907 | machine = 0; | |
908 | break; | |
909 | #endif | |
910 | ||
3b4f1a5d SC |
911 | #ifdef H8300MAGIC |
912 | case H8300MAGIC: | |
913 | arch = bfd_arch_h8300; | |
914 | machine = 0; | |
915 | break; | |
916 | #endif | |
cbdc7909 | 917 | |
075caafd ILT |
918 | default: /* Unreadable input file type */ |
919 | arch = bfd_arch_obscure; | |
920 | break; | |
921 | } | |
cbdc7909 | 922 | |
075caafd ILT |
923 | bfd_default_set_arch_mach(abfd, arch, machine); |
924 | return true; | |
925 | } | |
cbdc7909 | 926 | |
075caafd | 927 | #ifdef SYMNAME_IN_DEBUG |
6f715d66 | 928 | |
075caafd ILT |
929 | static boolean |
930 | DEFUN (symname_in_debug_hook, (abfd, sym), | |
931 | bfd *abfd AND | |
932 | struct internal_syment *sym) | |
933 | { | |
934 | return SYMNAME_IN_DEBUG (sym) ? true : false; | |
935 | } | |
6f715d66 | 936 | |
075caafd | 937 | #else |
cbdc7909 | 938 | |
075caafd ILT |
939 | #define symname_in_debug_hook \ |
940 | (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false | |
cbdc7909 | 941 | |
075caafd | 942 | #endif |
7a8b18b6 | 943 | |
9fda1a39 SC |
944 | /* |
945 | SUBSUBSECTION | |
946 | Writing Relocations | |
947 | ||
9fda1a39 SC |
948 | To write relocations, all the back end does is step though the |
949 | canonical relocation table, and create an | |
950 | @code{internal_reloc}. The symbol index to use is removed from | |
951 | the @code{offset} field in the symbol table supplied, the | |
952 | address comes directly from the sum of the section base | |
953 | address and the relocation offset and the type is dug directly | |
954 | from the howto field. Then the @code{internal_reloc} is | |
955 | swapped into the shape of an @code{external_reloc} and written | |
956 | out to disk. | |
957 | ||
6f715d66 | 958 | */ |
0f268757 | 959 | |
cbdc7909 | 960 | static void |
6f715d66 SC |
961 | DEFUN(coff_write_relocs,(abfd), |
962 | bfd *abfd) | |
963 | { | |
964 | asection *s; | |
965 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) { | |
966 | unsigned int i; | |
967 | struct external_reloc dst; | |
cbdc7909 | 968 | |
6f715d66 SC |
969 | arelent **p = s->orelocation; |
970 | bfd_seek(abfd, s->rel_filepos, SEEK_SET); | |
971 | for (i = 0; i < s->reloc_count; i++) { | |
972 | struct internal_reloc n; | |
973 | arelent *q = p[i]; | |
974 | memset((PTR)&n, 0, sizeof(n)); | |
9465d03e | 975 | |
6f715d66 | 976 | n.r_vaddr = q->address + s->vma; |
780c477a SC |
977 | /* The 29k const/consth reloc pair is a real kludge - the consth |
978 | part doesn't have a symbol - it has an offset. So rebuilt | |
979 | that here */ | |
980 | #ifdef R_IHCONST | |
981 | if (q->howto->type == R_IHCONST) | |
982 | n.r_symndx = q->addend; | |
983 | else | |
984 | #endif | |
985 | ||
c26d7d17 SC |
986 | |
987 | if (q->sym_ptr_ptr) | |
988 | { | |
989 | if (q->sym_ptr_ptr == bfd_abs_section.symbol_ptr_ptr) | |
990 | { | |
991 | /* This is a relocation relative to the absolute symbol */ | |
992 | n.r_symndx = -1; | |
993 | } | |
994 | else | |
995 | { | |
996 | n.r_symndx = get_index((*(q->sym_ptr_ptr))); | |
997 | /* Take notice if the symbol reloc points to a symbol we don't have | |
998 | in our symbol table. What should we do for this?? */ | |
999 | if (n.r_symndx > obj_conv_table_size (abfd)) | |
1000 | abort (); | |
1001 | } | |
1002 | ||
1003 | ||
6f715d66 | 1004 | } |
c26d7d17 | 1005 | |
0f268757 | 1006 | #ifdef SELECT_RELOC |
6f715d66 SC |
1007 | /* Work out reloc type from what is required */ |
1008 | SELECT_RELOC(n.r_type, q->howto); | |
0f268757 | 1009 | #else |
6f715d66 | 1010 | n.r_type = q->howto->type; |
0f268757 | 1011 | #endif |
0d740984 | 1012 | coff_swap_reloc_out(abfd, &n, &dst); |
ce07dd7c | 1013 | bfd_write((PTR) &dst, 1, RELSZ, abfd); |
0f268757 SC |
1014 | } |
1015 | } | |
6f715d66 | 1016 | } |
7a8b18b6 SC |
1017 | |
1018 | /* Set flags and magic number of a coff file from architecture and machine | |
1019 | type. Result is true if we can represent the arch&type, false if not. */ | |
0f268757 | 1020 | |
0f268757 | 1021 | static boolean |
6f715d66 SC |
1022 | DEFUN(coff_set_flags,(abfd, magicp, flagsp), |
1023 | bfd *abfd AND | |
1024 | unsigned *magicp AND | |
1025 | unsigned short *flagsp) | |
1026 | { | |
0d740984 | 1027 | switch (bfd_get_arch(abfd)) { |
dc999ad9 ILT |
1028 | #ifdef Z8KMAGIC |
1029 | case bfd_arch_z8k: | |
1030 | *magicp = Z8KMAGIC; | |
1031 | switch (bfd_get_mach(abfd)) | |
1032 | { | |
1033 | case bfd_mach_z8001: | |
1034 | *flagsp = F_Z8001; | |
1035 | break; | |
1036 | case bfd_mach_z8002: | |
1037 | *flagsp = F_Z8002; | |
1038 | break; | |
1039 | default: | |
1040 | return false; | |
1041 | } | |
1042 | return true; | |
1043 | #endif | |
0f268757 | 1044 | #ifdef I960ROMAGIC |
cbdc7909 | 1045 | |
3b4f1a5d | 1046 | case bfd_arch_i960: |
cbdc7909 | 1047 | |
6f715d66 SC |
1048 | { |
1049 | unsigned flags; | |
1050 | *magicp = I960ROMAGIC; | |
1051 | /* | |
1052 | ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC : | |
1053 | I960RWMAGIC); FIXME??? | |
1054 | */ | |
0d740984 | 1055 | switch (bfd_get_mach(abfd)) { |
6f715d66 SC |
1056 | case bfd_mach_i960_core: |
1057 | flags = F_I960CORE; | |
1058 | break; | |
1059 | case bfd_mach_i960_kb_sb: | |
1060 | flags = F_I960KB; | |
1061 | break; | |
1062 | case bfd_mach_i960_mc: | |
1063 | flags = F_I960MC; | |
1064 | break; | |
1065 | case bfd_mach_i960_xa: | |
1066 | flags = F_I960XA; | |
1067 | break; | |
1068 | case bfd_mach_i960_ca: | |
1069 | flags = F_I960CA; | |
1070 | break; | |
1071 | case bfd_mach_i960_ka_sa: | |
1072 | flags = F_I960KA; | |
1073 | break; | |
1074 | default: | |
1075 | return false; | |
0f268757 | 1076 | } |
6f715d66 SC |
1077 | *flagsp = flags; |
1078 | return true; | |
1079 | } | |
1080 | break; | |
0f268757 SC |
1081 | #endif |
1082 | #ifdef MIPS | |
6f715d66 SC |
1083 | case bfd_arch_mips: |
1084 | *magicp = MIPS_MAGIC_2; | |
1085 | return true; | |
1086 | break; | |
0f268757 | 1087 | #endif |
20fdc627 | 1088 | #ifdef I386MAGIC |
6f715d66 SC |
1089 | case bfd_arch_i386: |
1090 | *magicp = I386MAGIC; | |
1091 | return true; | |
dc999ad9 | 1092 | break; |
20fdc627 | 1093 | #endif |
0f268757 | 1094 | #ifdef MC68MAGIC |
6f715d66 SC |
1095 | case bfd_arch_m68k: |
1096 | *magicp = MC68MAGIC; | |
1097 | return true; | |
dc999ad9 | 1098 | break; |
0f268757 | 1099 | #endif |
cbdc7909 | 1100 | |
0f268757 | 1101 | #ifdef MC88MAGIC |
3b4f1a5d SC |
1102 | case bfd_arch_m88k: |
1103 | *magicp = MC88OMAGIC; | |
1104 | return true; | |
1105 | break; | |
1106 | #endif | |
1107 | #ifdef H8300MAGIC | |
1108 | case bfd_arch_h8300: | |
1109 | *magicp = H8300MAGIC; | |
1110 | return true; | |
1111 | break; | |
0f268757 | 1112 | #endif |
41f50af0 | 1113 | #ifdef A29K_MAGIC_BIG |
3b4f1a5d SC |
1114 | case bfd_arch_a29k: |
1115 | if (abfd->xvec->byteorder_big_p) | |
1116 | *magicp = A29K_MAGIC_BIG; | |
1117 | else | |
1118 | *magicp = A29K_MAGIC_LITTLE; | |
1119 | return true; | |
1120 | break; | |
41f50af0 | 1121 | #endif |
cbdc7909 | 1122 | |
dc999ad9 ILT |
1123 | #ifdef WE32KMAGIC |
1124 | case bfd_arch_we32k: | |
1125 | *magicp = WE32KMAGIC; | |
1126 | return true; | |
1127 | break; | |
1128 | #endif | |
1129 | ||
cbdc7909 JG |
1130 | #ifdef U802TOCMAGIC |
1131 | case bfd_arch_rs6000: | |
1132 | *magicp = U802TOCMAGIC; | |
dc999ad9 | 1133 | return true; |
cbdc7909 JG |
1134 | break; |
1135 | #endif | |
1136 | ||
6f715d66 | 1137 | default: /* Unknown architecture */ |
8acc9e05 | 1138 | /* return false; -- fall through to "return false" below, to avoid |
cbdc7909 | 1139 | "statement never reached" errors on the one below. */ |
8acc9e05 | 1140 | break; |
0f268757 | 1141 | } |
cbdc7909 | 1142 | |
6f715d66 SC |
1143 | return false; |
1144 | } | |
0f268757 SC |
1145 | |
1146 | ||
1147 | static boolean | |
6f715d66 SC |
1148 | DEFUN(coff_set_arch_mach,(abfd, arch, machine), |
1149 | bfd *abfd AND | |
1150 | enum bfd_architecture arch AND | |
1151 | unsigned long machine) | |
1152 | { | |
0d740984 SC |
1153 | unsigned dummy1; |
1154 | unsigned short dummy2; | |
1155 | bfd_default_set_arch_mach(abfd, arch, machine); | |
1156 | ||
1157 | if (arch != bfd_arch_unknown && | |
1158 | coff_set_flags(abfd, &dummy1, &dummy2) != true) | |
1159 | return false; /* We can't represent this type */ | |
1160 | return true; /* We're easy ... */ | |
1161 | } | |
0f268757 SC |
1162 | |
1163 | ||
1164 | /* Calculate the file position for each section. */ | |
1165 | ||
cbdc7909 | 1166 | static void |
6f715d66 SC |
1167 | DEFUN(coff_compute_section_file_positions,(abfd), |
1168 | bfd *abfd) | |
1169 | { | |
e98e6ec1 SC |
1170 | asection *current; |
1171 | asection *previous = (asection *)NULL; | |
1172 | file_ptr sofar = FILHSZ; | |
1173 | file_ptr old_sofar; | |
1174 | if (bfd_get_start_address(abfd)) | |
1175 | { | |
1176 | /* A start address may have been added to the original file. In this | |
1177 | case it will need an optional header to record it. */ | |
1178 | abfd->flags |= EXEC_P; | |
1179 | } | |
85e0c721 | 1180 | |
e98e6ec1 SC |
1181 | if (abfd->flags & EXEC_P) |
1182 | sofar += AOUTSZ; | |
cbdc7909 | 1183 | |
e98e6ec1 SC |
1184 | sofar += abfd->section_count * SCNHSZ; |
1185 | for (current = abfd->sections; | |
1186 | current != (asection *)NULL; | |
1187 | current = current->next) { | |
cbdc7909 | 1188 | |
e98e6ec1 SC |
1189 | /* Only deal with sections which have contents */ |
1190 | if (!(current->flags & SEC_HAS_CONTENTS)) | |
1191 | continue; | |
cbdc7909 | 1192 | |
e98e6ec1 SC |
1193 | /* Align the sections in the file to the same boundary on |
1194 | which they are aligned in virtual memory. I960 doesn't | |
1195 | do this (FIXME) so we can stay in sync with Intel. 960 | |
1196 | doesn't yet page from files... */ | |
0f268757 | 1197 | #ifndef I960 |
e98e6ec1 SC |
1198 | { |
1199 | /* make sure this section is aligned on the right boundary - by | |
1200 | padding the previous section up if necessary */ | |
1201 | ||
1202 | old_sofar= sofar; | |
1203 | sofar = BFD_ALIGN(sofar, 1 << current->alignment_power); | |
1204 | if (previous != (asection *)NULL) { | |
6590a8c9 | 1205 | previous->_raw_size += sofar - old_sofar; |
e98e6ec1 SC |
1206 | } |
1207 | } | |
85e0c721 | 1208 | |
0f268757 | 1209 | #endif |
e98e6ec1 SC |
1210 | /* FIXME, in demand paged files, the low order bits of the file |
1211 | offset must match the low order bits of the virtual address. | |
1212 | "Low order" is apparently implementation defined. Add code | |
1213 | here to round sofar up to match the virtual address. */ | |
cbdc7909 | 1214 | |
e98e6ec1 | 1215 | current->filepos = sofar; |
85e0c721 | 1216 | |
5e167886 KR |
1217 | sofar += current->_raw_size; |
1218 | #ifndef I960 | |
e98e6ec1 | 1219 | /* make sure that this section is of the right size too */ |
5e167886 | 1220 | old_sofar = sofar; |
e98e6ec1 SC |
1221 | sofar = BFD_ALIGN(sofar, 1 << current->alignment_power); |
1222 | current->_raw_size += sofar - old_sofar ; | |
5e167886 | 1223 | #endif |
85e0c721 | 1224 | |
e98e6ec1 | 1225 | previous = current; |
85e0c721 | 1226 | } |
e98e6ec1 | 1227 | obj_relocbase(abfd) = sofar; |
6f715d66 | 1228 | } |
0f268757 | 1229 | |
8070f29d KR |
1230 | /* If .file, .text, .data, .bss symbols are missing, add them. */ |
1231 | /* @@ Should we only be adding missing symbols, or overriding the aux | |
1232 | values for existing section symbols? */ | |
1233 | static void | |
1234 | coff_add_missing_symbols (abfd) | |
1235 | bfd *abfd; | |
1236 | { | |
1237 | unsigned int nsyms = bfd_get_symcount (abfd); | |
1238 | asymbol **sympp = abfd->outsymbols; | |
1239 | asymbol **sympp2; | |
1240 | unsigned int i; | |
1241 | int need_text = 1, need_data = 1, need_bss = 1, need_file = 1; | |
0f268757 | 1242 | |
8070f29d KR |
1243 | for (i = 0; i < nsyms; i++) |
1244 | { | |
1245 | coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]); | |
1246 | CONST char *name; | |
9465d03e SC |
1247 | if (csym) |
1248 | { | |
1249 | /* only do this if there is a coff representation of the input | |
1250 | symbol */ | |
1251 | if (csym->native && csym->native->u.syment.n_sclass == C_FILE) | |
8070f29d KR |
1252 | { |
1253 | need_file = 0; | |
1254 | continue; | |
1255 | } | |
9465d03e SC |
1256 | name = csym->symbol.name; |
1257 | if (!name) | |
1258 | continue; | |
1259 | if (!strcmp (name, _TEXT)) | |
1260 | need_text = 0; | |
1261 | else if (!strcmp (name, _DATA)) | |
1262 | need_data = 0; | |
1263 | else if (!strcmp (name, _BSS)) | |
1264 | need_bss = 0; | |
1265 | } | |
8070f29d KR |
1266 | } |
1267 | /* Now i == bfd_get_symcount (abfd). */ | |
1268 | /* @@ For now, don't deal with .file symbol. */ | |
1269 | need_file = 0; | |
1270 | ||
1271 | if (!need_text && !need_data && !need_bss && !need_file) | |
1272 | return; | |
1273 | nsyms += need_text + need_data + need_bss + need_file; | |
1274 | sympp2 = (asymbol**) bfd_alloc_by_size_t (abfd, nsyms * sizeof (asymbol *)); | |
1275 | memcpy (sympp2, sympp, i * sizeof (asymbol *)); | |
1276 | if (need_file) | |
1277 | { | |
1278 | /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */ | |
1279 | abort (); | |
1280 | } | |
1281 | if (need_text) | |
1282 | sympp2[i++] = coff_section_symbol (abfd, _TEXT); | |
1283 | if (need_data) | |
1284 | sympp2[i++] = coff_section_symbol (abfd, _DATA); | |
1285 | if (need_bss) | |
1286 | sympp2[i++] = coff_section_symbol (abfd, _BSS); | |
9465d03e | 1287 | BFD_ASSERT (i == nsyms); |
8070f29d KR |
1288 | bfd_set_symtab (abfd, sympp2, nsyms); |
1289 | } | |
0f268757 SC |
1290 | |
1291 | /* SUPPRESS 558 */ | |
1292 | /* SUPPRESS 529 */ | |
1293 | static boolean | |
1294 | DEFUN(coff_write_object_contents,(abfd), | |
6f715d66 | 1295 | bfd *abfd) |
e98e6ec1 SC |
1296 | { |
1297 | asection *current; | |
1298 | unsigned int count; | |
1299 | ||
1300 | boolean hasrelocs = false; | |
1301 | boolean haslinno = false; | |
1302 | file_ptr reloc_base; | |
1303 | file_ptr lineno_base; | |
1304 | file_ptr sym_base; | |
1305 | file_ptr scn_base; | |
1306 | file_ptr data_base; | |
1307 | unsigned long reloc_size = 0; | |
1308 | unsigned long lnno_size = 0; | |
1309 | asection *text_sec = NULL; | |
1310 | asection *data_sec = NULL; | |
1311 | asection *bss_sec = NULL; | |
cbdc7909 | 1312 | |
e98e6ec1 SC |
1313 | struct internal_filehdr internal_f; |
1314 | struct internal_aouthdr internal_a; | |
cbdc7909 | 1315 | |
cbdc7909 | 1316 | |
e98e6ec1 SC |
1317 | bfd_error = system_call_error; |
1318 | /* Number the output sections, starting from one on the first section | |
8070f29d KR |
1319 | with a name which doesn't start with a *. |
1320 | @@ The code doesn't make this check. Is it supposed to be done, | |
1321 | or isn't it?? */ | |
e98e6ec1 SC |
1322 | count = 1; |
1323 | for (current = abfd->sections; current != (asection *)NULL; | |
1324 | current = current->next) | |
1325 | { | |
e98e6ec1 | 1326 | current->target_index = count; |
8070f29d | 1327 | count++; |
e98e6ec1 | 1328 | } |
6590a8c9 | 1329 | |
e98e6ec1 | 1330 | if(abfd->output_has_begun == false) { |
6f715d66 SC |
1331 | coff_compute_section_file_positions(abfd); |
1332 | } | |
cbdc7909 | 1333 | |
e98e6ec1 | 1334 | if (abfd->sections != (asection *)NULL) { |
6f715d66 | 1335 | scn_base = abfd->sections->filepos; |
e98e6ec1 | 1336 | } |
0f268757 | 1337 | else { |
e98e6ec1 SC |
1338 | scn_base = 0; |
1339 | } | |
0f268757 | 1340 | if (bfd_seek(abfd, scn_base, SEEK_SET) != 0) |
e98e6ec1 | 1341 | return false; |
0f268757 | 1342 | reloc_base = obj_relocbase(abfd); |
cbdc7909 | 1343 | |
0f268757 SC |
1344 | /* Make a pass through the symbol table to count line number entries and |
1345 | put them into the correct asections */ | |
cbdc7909 | 1346 | |
0f268757 SC |
1347 | coff_count_linenumbers(abfd); |
1348 | data_base = scn_base; | |
cbdc7909 | 1349 | |
0f268757 | 1350 | /* Work out the size of the reloc and linno areas */ |
cbdc7909 | 1351 | |
e98e6ec1 SC |
1352 | for (current = abfd->sections; current != NULL; current = |
1353 | current->next) | |
1354 | { | |
1355 | /* We give section headers to +ve indexes */ | |
1356 | if (current->target_index > 0) | |
1357 | { | |
1358 | ||
1359 | reloc_size += current->reloc_count * RELSZ; | |
e98e6ec1 | 1360 | lnno_size += current->lineno_count * LINESZ; |
e98e6ec1 SC |
1361 | data_base += SCNHSZ; |
1362 | } | |
1363 | ||
0f268757 | 1364 | } |
cbdc7909 | 1365 | |
0f268757 SC |
1366 | lineno_base = reloc_base + reloc_size; |
1367 | sym_base = lineno_base + lnno_size; | |
cbdc7909 | 1368 | |
0f268757 | 1369 | /* Indicate in each section->line_filepos its actual file address */ |
e98e6ec1 SC |
1370 | for (current = abfd->sections; current != NULL; current = |
1371 | current->next) | |
1372 | { | |
1373 | if (current->target_index > 0) | |
1374 | { | |
1375 | ||
1376 | if (current->lineno_count) { | |
1377 | current->line_filepos = lineno_base; | |
1378 | current->moving_line_filepos = lineno_base; | |
e98e6ec1 | 1379 | lineno_base += current->lineno_count * LINESZ; |
e98e6ec1 SC |
1380 | } |
1381 | else { | |
1382 | current->line_filepos = 0; | |
1383 | } | |
1384 | if (current->reloc_count) { | |
1385 | current->rel_filepos = reloc_base; | |
54862c89 | 1386 | reloc_base += current->reloc_count * RELSZ; |
e98e6ec1 SC |
1387 | } |
1388 | else { | |
1389 | current->rel_filepos = 0; | |
1390 | } | |
0f268757 | 1391 | } |
e98e6ec1 SC |
1392 | } |
1393 | ||
cbdc7909 | 1394 | |
cbdc7909 | 1395 | |
e98e6ec1 SC |
1396 | /* Write section headers to the file. */ |
1397 | internal_f.f_nscns = 0; | |
0f268757 SC |
1398 | bfd_seek(abfd, |
1399 | (file_ptr) ((abfd->flags & EXEC_P) ? | |
1400 | (FILHSZ + AOUTSZ) : FILHSZ), | |
1401 | SEEK_SET); | |
cbdc7909 | 1402 | |
e98e6ec1 | 1403 | { |
0f268757 | 1404 | #if 0 |
e98e6ec1 | 1405 | unsigned int pad = abfd->flags & D_PAGED ? data_base : 0; |
0f268757 | 1406 | #endif |
e98e6ec1 | 1407 | unsigned int pad = 0; |
cbdc7909 | 1408 | |
e98e6ec1 SC |
1409 | for (current = abfd->sections; |
1410 | current != NULL; | |
1411 | current = current->next) { | |
1412 | struct internal_scnhdr section; | |
1413 | if (current->target_index > 0) | |
1414 | { | |
1415 | internal_f.f_nscns ++; | |
0f268757 | 1416 | strncpy(&(section.s_name[0]), current->name, 8); |
b26059aa ILT |
1417 | #ifdef _LIB |
1418 | /* Always set s_vaddr of .lib to 0. This is right for SVR3.2 | |
1419 | Ian Taylor <ian@cygnus.com>. */ | |
1420 | if (strcmp (current->name, _LIB) == 0) | |
1421 | section.s_vaddr = 0; | |
1422 | else | |
1423 | #endif | |
1424 | section.s_vaddr = current->vma + pad; | |
0f268757 | 1425 | section.s_paddr = current->vma + pad; |
6590a8c9 | 1426 | section.s_size = current->_raw_size - pad; |
0f268757 SC |
1427 | /* |
1428 | If this section has no size or is unloadable then the scnptr | |
1429 | will be 0 too | |
1430 | */ | |
6590a8c9 | 1431 | if (current->_raw_size - pad == 0 || |
b26059aa | 1432 | (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) { |
e98e6ec1 SC |
1433 | section.s_scnptr = 0; |
1434 | } | |
0f268757 | 1435 | else { |
e98e6ec1 SC |
1436 | section.s_scnptr = current->filepos; |
1437 | } | |
0f268757 SC |
1438 | section.s_relptr = current->rel_filepos; |
1439 | section.s_lnnoptr = current->line_filepos; | |
1440 | section.s_nreloc = current->reloc_count; | |
1441 | section.s_nlnno = current->lineno_count; | |
1442 | if (current->reloc_count != 0) | |
e98e6ec1 | 1443 | hasrelocs = true; |
0f268757 | 1444 | if (current->lineno_count != 0) |
e98e6ec1 | 1445 | haslinno = true; |
cbdc7909 | 1446 | |
41f50af0 SC |
1447 | section.s_flags = sec_to_styp_flags(current->name,current->flags); |
1448 | ||
0f268757 | 1449 | if (!strcmp(current->name, _TEXT)) { |
e98e6ec1 SC |
1450 | text_sec = current; |
1451 | } else if (!strcmp(current->name, _DATA)) { | |
1452 | data_sec = current; | |
b26059aa ILT |
1453 | #ifdef TWO_DATA_SECS |
1454 | } else if (!strcmp(current->name, ".data2")) { | |
1455 | data_sec = current; | |
1456 | #endif /* TWO_DATA_SECS */ | |
e98e6ec1 SC |
1457 | } else if (!strcmp(current->name, _BSS)) { |
1458 | bss_sec = current; | |
1459 | } | |
cbdc7909 | 1460 | |
0f268757 SC |
1461 | #ifdef I960 |
1462 | section.s_align = (current->alignment_power | |
1463 | ? 1 << current->alignment_power | |
1464 | : 0); | |
1465 | ||
1466 | #endif | |
e98e6ec1 SC |
1467 | { |
1468 | SCNHDR buff; | |
0f268757 | 1469 | |
e98e6ec1 SC |
1470 | coff_swap_scnhdr_out(abfd, §ion, &buff); |
1471 | bfd_write((PTR) (&buff), 1, SCNHSZ, abfd); | |
1472 | ||
1473 | } | |
0f268757 | 1474 | |
0f268757 SC |
1475 | pad = 0; |
1476 | } | |
e98e6ec1 SC |
1477 | } |
1478 | } | |
1479 | ||
0f268757 SC |
1480 | |
1481 | /* OK, now set up the filehdr... */ | |
e98e6ec1 SC |
1482 | |
1483 | /* Don't include the internal abs section in the section count */ | |
1484 | ||
0f268757 SC |
1485 | /* |
1486 | We will NOT put a fucking timestamp in the header here. Every time you | |
17f9c817 | 1487 | put it back, I will come in and take it out again. I'm sorry. This |
0f268757 SC |
1488 | field does not belong here. We fill it with a 0 so it compares the |
1489 | same but is not a reasonable time. -- gnu@cygnus.com | |
1490 | */ | |
0f268757 | 1491 | internal_f.f_timdat = 0; |
0f268757 SC |
1492 | |
1493 | if (bfd_get_symcount(abfd) != 0) | |
e98e6ec1 | 1494 | internal_f.f_symptr = sym_base; |
0f268757 | 1495 | else |
e98e6ec1 | 1496 | internal_f.f_symptr = 0; |
0f268757 SC |
1497 | |
1498 | internal_f.f_flags = 0; | |
1499 | ||
1500 | if (abfd->flags & EXEC_P) | |
e98e6ec1 | 1501 | internal_f.f_opthdr = AOUTSZ; |
0f268757 | 1502 | else |
e98e6ec1 | 1503 | internal_f.f_opthdr = 0; |
0f268757 SC |
1504 | |
1505 | if (!hasrelocs) | |
e98e6ec1 | 1506 | internal_f.f_flags |= F_RELFLG; |
0f268757 | 1507 | if (!haslinno) |
e98e6ec1 | 1508 | internal_f.f_flags |= F_LNNO; |
0f268757 | 1509 | if (0 == bfd_get_symcount(abfd)) |
e98e6ec1 | 1510 | internal_f.f_flags |= F_LSYMS; |
0f268757 | 1511 | if (abfd->flags & EXEC_P) |
e98e6ec1 | 1512 | internal_f.f_flags |= F_EXEC; |
a0f3f080 | 1513 | |
0f268757 | 1514 | if (!abfd->xvec->byteorder_big_p) |
e98e6ec1 | 1515 | internal_f.f_flags |= F_AR32WR; |
a0f3f080 SC |
1516 | else |
1517 | internal_f.f_flags |= F_AR32W; | |
1518 | ||
0f268757 SC |
1519 | /* |
1520 | FIXME, should do something about the other byte orders and | |
1521 | architectures. | |
1522 | */ | |
1523 | ||
1524 | /* Set up architecture-dependent stuff */ | |
1525 | ||
e98e6ec1 SC |
1526 | { unsigned int magic = 0; |
1527 | unsigned short flags = 0; | |
1528 | coff_set_flags(abfd, &magic, &flags); | |
1529 | internal_f.f_magic = magic; | |
1530 | internal_f.f_flags |= flags; | |
1531 | /* ...and the "opt"hdr... */ | |
0f268757 | 1532 | |
cbdc7909 | 1533 | #ifdef A29K |
e98e6ec1 SC |
1534 | # ifdef ULTRA3 /* NYU's machine */ |
1535 | /* FIXME: This is a bogus check. I really want to see if there | |
1536 | * is a .shbss or a .shdata section, if so then set the magic | |
1537 | * number to indicate a shared data executable. | |
1538 | */ | |
1539 | if (internal_f.f_nscns >= 7) | |
1540 | internal_a.magic = SHMAGIC; /* Shared magic */ | |
1541 | else | |
1542 | # endif /* ULTRA3 */ | |
1543 | internal_a.magic = NMAGIC; /* Assume separate i/d */ | |
41f50af0 | 1544 | #define __A_MAGIC_SET__ |
e98e6ec1 | 1545 | #endif /* A29K */ |
0f268757 | 1546 | #ifdef I960 |
e98e6ec1 | 1547 | internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC); |
41f50af0 | 1548 | #define __A_MAGIC_SET__ |
e98e6ec1 | 1549 | #endif /* I960 */ |
0f268757 | 1550 | #if M88 |
41f50af0 | 1551 | #define __A_MAGIC_SET__ |
e98e6ec1 SC |
1552 | internal_a.magic = PAGEMAGICBCS; |
1553 | #endif /* M88 */ | |
41f50af0 | 1554 | |
8ad2a31d | 1555 | #if M68 || MIPS || WE32K |
41f50af0 | 1556 | #define __A_MAGIC_SET__ |
e98e6ec1 | 1557 | /* Never was anything here for the 68k */ |
8ad2a31d SC |
1558 | #endif /* M68 || MIPS || WE32K */ |
1559 | ||
1560 | #if I386 | |
1561 | # define __A_MAGIC_SET__ | |
1562 | internal_a.magic = ZMAGIC; | |
1563 | #endif /* I386 */ | |
41f50af0 | 1564 | |
cbdc7909 JG |
1565 | #if RS6000COFF_C |
1566 | #define __A_MAGIC_SET__ | |
e98e6ec1 SC |
1567 | internal_a.magic = (abfd->flags & D_PAGED)? RS6K_AOUTHDR_ZMAGIC: |
1568 | (abfd->flags & WP_TEXT)? RS6K_AOUTHDR_NMAGIC: | |
1569 | RS6K_AOUTHDR_OMAGIC; | |
cbdc7909 JG |
1570 | #endif |
1571 | ||
41f50af0 SC |
1572 | #ifndef __A_MAGIC_SET__ |
1573 | # include "Your aouthdr magic number is not being set!" | |
1574 | #else | |
1575 | # undef __A_MAGIC_SET__ | |
0f268757 | 1576 | #endif |
e98e6ec1 | 1577 | } |
0f268757 SC |
1578 | /* Now should write relocs, strings, syms */ |
1579 | obj_sym_filepos(abfd) = sym_base; | |
1580 | ||
1581 | if (bfd_get_symcount(abfd) != 0) { | |
8070f29d | 1582 | coff_add_missing_symbols (abfd); |
e98e6ec1 SC |
1583 | coff_renumber_symbols(abfd); |
1584 | coff_mangle_symbols(abfd); | |
1585 | coff_write_symbols(abfd); | |
1586 | coff_write_linenumbers(abfd); | |
1587 | coff_write_relocs(abfd); | |
1588 | } | |
0f268757 | 1589 | if (text_sec) { |
6590a8c9 | 1590 | internal_a.tsize = bfd_get_section_size_before_reloc(text_sec); |
e98e6ec1 SC |
1591 | internal_a.text_start = internal_a.tsize ? text_sec->vma : 0; |
1592 | } | |
0f268757 | 1593 | if (data_sec) { |
6590a8c9 | 1594 | internal_a.dsize = bfd_get_section_size_before_reloc(data_sec); |
e98e6ec1 SC |
1595 | internal_a.data_start = internal_a.dsize ? data_sec->vma : 0; |
1596 | } | |
0f268757 | 1597 | if (bss_sec) { |
6590a8c9 | 1598 | internal_a.bsize = bfd_get_section_size_before_reloc(bss_sec); |
e98e6ec1 | 1599 | } |
0f268757 SC |
1600 | |
1601 | internal_a.entry = bfd_get_start_address(abfd); | |
1602 | internal_f.f_nsyms = bfd_get_symcount(abfd); | |
1603 | ||
1604 | /* now write them */ | |
f8e01940 | 1605 | if (bfd_seek(abfd, (file_ptr) 0, SEEK_SET) != 0) |
e98e6ec1 SC |
1606 | return false; |
1607 | { | |
1608 | FILHDR buff; | |
859f11ff | 1609 | coff_swap_filehdr_out(abfd, (PTR)&internal_f, (PTR)&buff); |
e98e6ec1 SC |
1610 | bfd_write((PTR) &buff, 1, FILHSZ, abfd); |
1611 | } | |
0f268757 | 1612 | if (abfd->flags & EXEC_P) { |
e98e6ec1 | 1613 | AOUTHDR buff; |
859f11ff | 1614 | coff_swap_aouthdr_out(abfd, (PTR)&internal_a, (PTR)&buff); |
e98e6ec1 SC |
1615 | bfd_write((PTR) &buff, 1, AOUTSZ, abfd); |
1616 | } | |
0f268757 | 1617 | return true; |
6f715d66 SC |
1618 | } |
1619 | ||
0f268757 | 1620 | static boolean |
6f715d66 SC |
1621 | DEFUN(coff_set_section_contents,(abfd, section, location, offset, count), |
1622 | bfd *abfd AND | |
1623 | sec_ptr section AND | |
1624 | PTR location AND | |
1625 | file_ptr offset AND | |
41f50af0 | 1626 | bfd_size_type count) |
0f268757 SC |
1627 | { |
1628 | if (abfd->output_has_begun == false) /* set by bfd.c handler */ | |
075caafd | 1629 | coff_compute_section_file_positions(abfd); |
cbdc7909 | 1630 | |
075caafd ILT |
1631 | #ifdef _LIB |
1632 | /* If this is a .lib section, bump the vma address so that it | |
1633 | winds up being the number of .lib sections output. This is | |
1634 | right for SVR3.2. Shared libraries should probably get more | |
1635 | generic support. Ian Taylor <ian@cygnus.com>. */ | |
1636 | if (strcmp (section->name, _LIB) == 0) | |
1637 | ++section->vma; | |
1638 | #endif | |
0f268757 | 1639 | |
075caafd | 1640 | bfd_seek(abfd, (file_ptr) (section->filepos + offset), SEEK_SET); |
7a8b18b6 | 1641 | |
075caafd ILT |
1642 | if (count != 0) { |
1643 | return (bfd_write(location, 1, count, abfd) == count) ? true : false; | |
1644 | } | |
1645 | return true; | |
1646 | } | |
1647 | #if 0 | |
1648 | static boolean | |
1649 | coff_close_and_cleanup(abfd) | |
1650 | bfd *abfd; | |
0f268757 | 1651 | { |
075caafd ILT |
1652 | if (!bfd_read_p(abfd)) |
1653 | switch (abfd->format) { | |
1654 | case bfd_archive: | |
1655 | if (!_bfd_write_archive_contents(abfd)) | |
1656 | return false; | |
1657 | break; | |
1658 | case bfd_object: | |
1659 | if (!coff_write_object_contents(abfd)) | |
1660 | return false; | |
1661 | break; | |
1662 | default: | |
1663 | bfd_error = invalid_operation; | |
1664 | return false; | |
0f268757 | 1665 | } |
075caafd ILT |
1666 | |
1667 | /* We depend on bfd_close to free all the memory on the obstack. */ | |
1668 | /* FIXME if bfd_release is not using obstacks! */ | |
1669 | return true; | |
0f268757 SC |
1670 | } |
1671 | ||
075caafd ILT |
1672 | #endif |
1673 | ||
1674 | static PTR | |
1675 | buy_and_read(abfd, where, seek_direction, size) | |
1676 | bfd *abfd; | |
1677 | file_ptr where; | |
1678 | int seek_direction; | |
1679 | size_t size; | |
1680 | { | |
1681 | PTR area = (PTR) bfd_alloc(abfd, size); | |
1682 | if (!area) { | |
1683 | bfd_error = no_memory; | |
1684 | return (NULL); | |
1685 | } | |
1686 | bfd_seek(abfd, where, seek_direction); | |
1687 | if (bfd_read(area, 1, size, abfd) != size) { | |
1688 | bfd_error = system_call_error; | |
1689 | return (NULL); | |
1690 | } /* on error */ | |
1691 | return (area); | |
1692 | } /* buy_and_read() */ | |
0f268757 | 1693 | |
9fda1a39 SC |
1694 | /* |
1695 | SUBSUBSECTION | |
1696 | Reading Linenumbers | |
1697 | ||
9fda1a39 SC |
1698 | Creating the linenumber table is done by reading in the entire |
1699 | coff linenumber table, and creating another table for internal use. | |
6f715d66 | 1700 | |
9fda1a39 SC |
1701 | A coff line number table is structured so that each function |
1702 | is marked as having a line number of 0. Each line within the | |
1703 | function is an offset from the first line in the function. The | |
1704 | base of the line number information for the table is stored in | |
1705 | the symbol associated with the function. | |
6f715d66 | 1706 | |
9fda1a39 SC |
1707 | The information is copied from the external to the internal |
1708 | table, and each symbol which marks a function is marked by | |
1709 | pointing its... | |
6f715d66 | 1710 | |
9fda1a39 | 1711 | How does this work ? |
6f715d66 SC |
1712 | |
1713 | */ | |
0f268757 SC |
1714 | |
1715 | static boolean | |
1716 | coff_slurp_line_table(abfd, asect) | |
1717 | bfd *abfd; | |
1718 | asection *asect; | |
1719 | { | |
1720 | LINENO *native_lineno; | |
1721 | alent *lineno_cache; | |
cbdc7909 | 1722 | |
0f268757 | 1723 | BFD_ASSERT(asect->lineno == (alent *) NULL); |
cbdc7909 | 1724 | |
0f268757 SC |
1725 | native_lineno = (LINENO *) buy_and_read(abfd, |
1726 | asect->line_filepos, | |
1727 | SEEK_SET, | |
1728 | (size_t) (LINESZ * | |
1729 | asect->lineno_count)); | |
1730 | lineno_cache = | |
1731 | (alent *) bfd_alloc(abfd, (size_t) ((asect->lineno_count + 1) * sizeof(alent))); | |
1732 | if (lineno_cache == NULL) { | |
1733 | bfd_error = no_memory; | |
1734 | return false; | |
cbdc7909 | 1735 | } else { |
0f268757 SC |
1736 | unsigned int counter = 0; |
1737 | alent *cache_ptr = lineno_cache; | |
1738 | LINENO *src = native_lineno; | |
cbdc7909 | 1739 | |
0f268757 SC |
1740 | while (counter < asect->lineno_count) { |
1741 | struct internal_lineno dst; | |
2700c3c7 | 1742 | coff_swap_lineno_in(abfd, src, &dst); |
0f268757 | 1743 | cache_ptr->line_number = dst.l_lnno; |
cbdc7909 | 1744 | |
0f268757 SC |
1745 | if (cache_ptr->line_number == 0) { |
1746 | coff_symbol_type *sym = | |
1747 | (coff_symbol_type *) (dst.l_addr.l_symndx | |
6f715d66 | 1748 | + obj_raw_syments(abfd))->u.syment._n._n_n._n_zeroes; |
0f268757 SC |
1749 | cache_ptr->u.sym = (asymbol *) sym; |
1750 | sym->lineno = cache_ptr; | |
1751 | } | |
1752 | else { | |
1753 | cache_ptr->u.offset = dst.l_addr.l_paddr | |
1754 | - bfd_section_vma(abfd, asect); | |
1755 | } /* If no linenumber expect a symbol index */ | |
cbdc7909 | 1756 | |
0f268757 SC |
1757 | cache_ptr++; |
1758 | src++; | |
1759 | counter++; | |
1760 | } | |
1761 | cache_ptr->line_number = 0; | |
cbdc7909 | 1762 | |
0f268757 SC |
1763 | } |
1764 | asect->lineno = lineno_cache; | |
1765 | /* FIXME, free native_lineno here, or use alloca or something. */ | |
1766 | return true; | |
1767 | } /* coff_slurp_line_table() */ | |
1768 | ||
0f268757 SC |
1769 | static boolean |
1770 | DEFUN(coff_slurp_symbol_table,(abfd), | |
1771 | bfd *abfd) | |
6f715d66 SC |
1772 | { |
1773 | combined_entry_type *native_symbols; | |
1774 | coff_symbol_type *cached_area; | |
1775 | unsigned int *table_ptr; | |
cbdc7909 | 1776 | |
6f715d66 SC |
1777 | unsigned int number_of_symbols = 0; |
1778 | if (obj_symbols(abfd)) | |
1779 | return true; | |
1780 | bfd_seek(abfd, obj_sym_filepos(abfd), SEEK_SET); | |
cbdc7909 | 1781 | |
6f715d66 | 1782 | /* Read in the symbol table */ |
075caafd | 1783 | if ((native_symbols = coff_get_normalized_symtab(abfd)) == NULL) { |
6f715d66 SC |
1784 | return (false); |
1785 | } /* on error */ | |
cbdc7909 | 1786 | |
6f715d66 SC |
1787 | /* Allocate enough room for all the symbols in cached form */ |
1788 | cached_area = | |
1789 | (coff_symbol_type *) | |
1790 | bfd_alloc(abfd, (size_t) (bfd_get_symcount(abfd) * sizeof(coff_symbol_type))); | |
cbdc7909 | 1791 | |
6f715d66 SC |
1792 | if (cached_area == NULL) { |
1793 | bfd_error = no_memory; | |
1794 | return false; | |
1795 | } /* on error */ | |
1796 | table_ptr = | |
1797 | (unsigned int *) | |
1798 | bfd_alloc(abfd, (size_t) (bfd_get_symcount(abfd) * sizeof(unsigned int))); | |
cbdc7909 | 1799 | |
6f715d66 SC |
1800 | if (table_ptr == NULL) { |
1801 | bfd_error = no_memory; | |
1802 | return false; | |
85e0c721 SC |
1803 | } |
1804 | else | |
1805 | { | |
6f715d66 SC |
1806 | coff_symbol_type *dst = cached_area; |
1807 | unsigned int last_native_index = bfd_get_symcount(abfd); | |
1808 | unsigned int this_index = 0; | |
1809 | while (this_index < last_native_index) { | |
1810 | combined_entry_type *src = native_symbols + this_index; | |
1811 | table_ptr[this_index] = number_of_symbols; | |
1812 | dst->symbol.the_bfd = abfd; | |
cbdc7909 | 1813 | |
6f715d66 SC |
1814 | dst->symbol.name = (char *)(src->u.syment._n._n_n._n_offset); |
1815 | /* | |
1816 | We use the native name field to point to the cached field | |
1817 | */ | |
1818 | src->u.syment._n._n_n._n_zeroes = (int) dst; | |
075caafd ILT |
1819 | dst->symbol.section = coff_section_from_bfd_index(abfd, |
1820 | src->u.syment.n_scnum); | |
859f11ff SC |
1821 | dst->symbol.flags = 0; |
1822 | dst->done_lineno = false; | |
1823 | ||
6f715d66 | 1824 | switch (src->u.syment.n_sclass) { |
0f268757 | 1825 | #ifdef I960 |
6f715d66 | 1826 | case C_LEAFEXT: |
0f268757 | 1827 | #if 0 |
6f715d66 SC |
1828 | dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma; |
1829 | dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL; | |
1830 | dst->symbol.flags |= BSF_NOT_AT_END; | |
0f268757 | 1831 | #endif |
6f715d66 | 1832 | /* Fall through to next case */ |
cbdc7909 | 1833 | |
0f268757 | 1834 | #endif |
cbdc7909 | 1835 | |
6f715d66 | 1836 | case C_EXT: |
cbdc7909 JG |
1837 | #ifdef RS6000COFF_C |
1838 | case C_HIDEXT: | |
1839 | #endif | |
6f715d66 SC |
1840 | if ((src->u.syment.n_scnum) == 0) { |
1841 | if ((src->u.syment.n_value) == 0) { | |
e98e6ec1 | 1842 | dst->symbol.section = &bfd_und_section; |
6f715d66 SC |
1843 | dst->symbol.value= 0; |
1844 | } | |
1845 | else { | |
e98e6ec1 | 1846 | dst->symbol.section = &bfd_com_section; |
6f715d66 SC |
1847 | dst->symbol.value = (src->u.syment.n_value); |
1848 | } | |
1849 | } | |
1850 | else { | |
1851 | /* | |
1852 | Base the value as an index from the base of the | |
1853 | section | |
1854 | */ | |
e98e6ec1 | 1855 | |
6f715d66 SC |
1856 | dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL; |
1857 | dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma; | |
e98e6ec1 | 1858 | |
6f715d66 | 1859 | if (ISFCN((src->u.syment.n_type))) { |
0f268757 | 1860 | /* |
6f715d66 SC |
1861 | A function ext does not go at the end of a file |
1862 | */ | |
1863 | dst->symbol.flags |= BSF_NOT_AT_END; | |
0f268757 | 1864 | } |
6f715d66 | 1865 | } |
85e0c721 SC |
1866 | |
1867 | ||
6f715d66 | 1868 | break; |
cbdc7909 | 1869 | |
6f715d66 | 1870 | case C_STAT: /* static */ |
0f268757 | 1871 | #ifdef I960 |
6f715d66 | 1872 | case C_LEAFSTAT: /* static leaf procedure */ |
0f268757 | 1873 | #endif |
6f715d66 | 1874 | case C_LABEL: /* label */ |
0d740984 SC |
1875 | if (src->u.syment.n_scnum == -2) |
1876 | dst->symbol.flags = BSF_DEBUGGING; | |
1877 | else | |
1878 | dst->symbol.flags = BSF_LOCAL; | |
6f715d66 | 1879 | /* |
0d740984 SC |
1880 | Base the value as an index from the base of the section, if |
1881 | there is one | |
6f715d66 | 1882 | */ |
0d740984 SC |
1883 | if (dst->symbol.section) |
1884 | dst->symbol.value = (src->u.syment.n_value) - | |
1885 | dst->symbol.section->vma; | |
1886 | else | |
1887 | dst->symbol.value = (src->u.syment.n_value) ; | |
6f715d66 | 1888 | break; |
cbdc7909 | 1889 | |
6f715d66 SC |
1890 | case C_MOS: /* member of structure */ |
1891 | case C_EOS: /* end of structure */ | |
41f50af0 SC |
1892 | #ifdef NOTDEF /* C_AUTOARG has the same value */ |
1893 | #ifdef C_GLBLREG | |
1894 | case C_GLBLREG: /* A29k-specific storage class */ | |
1895 | #endif | |
1896 | #endif | |
6f715d66 SC |
1897 | case C_REGPARM: /* register parameter */ |
1898 | case C_REG: /* register variable */ | |
0f268757 | 1899 | #ifdef C_AUTOARG |
6f715d66 | 1900 | case C_AUTOARG: /* 960-specific storage class */ |
0f268757 | 1901 | #endif |
6f715d66 | 1902 | case C_TPDEF: /* type definition */ |
6f715d66 SC |
1903 | case C_ARG: |
1904 | case C_AUTO: /* automatic variable */ | |
1905 | case C_FIELD: /* bit field */ | |
1906 | case C_ENTAG: /* enumeration tag */ | |
1907 | case C_MOE: /* member of enumeration */ | |
1908 | case C_MOU: /* member of union */ | |
1909 | case C_UNTAG: /* union tag */ | |
6f715d66 SC |
1910 | dst->symbol.flags = BSF_DEBUGGING; |
1911 | dst->symbol.value = (src->u.syment.n_value); | |
1912 | break; | |
cbdc7909 | 1913 | |
6f715d66 SC |
1914 | case C_FILE: /* file name */ |
1915 | case C_STRTAG: /* structure tag */ | |
cbdc7909 JG |
1916 | #ifdef RS6000COFF_C |
1917 | case C_BINCL: /* beginning of include file */ | |
1918 | case C_EINCL: /* ending of include file */ | |
1919 | case C_GSYM: | |
1920 | case C_LSYM: | |
1921 | case C_PSYM: | |
1922 | case C_RSYM: | |
1923 | case C_RPSYM: | |
1924 | case C_STSYM: | |
1925 | case C_DECL: | |
1926 | case C_ENTRY: | |
1927 | case C_FUN: | |
1928 | case C_BSTAT: | |
1929 | case C_ESTAT: | |
1930 | #endif | |
6f715d66 SC |
1931 | dst->symbol.flags = BSF_DEBUGGING; |
1932 | dst->symbol.value = (src->u.syment.n_value); | |
6f715d66 | 1933 | break; |
cbdc7909 | 1934 | |
6f715d66 SC |
1935 | case C_BLOCK: /* ".bb" or ".eb" */ |
1936 | case C_FCN: /* ".bf" or ".ef" */ | |
41f50af0 | 1937 | case C_EFCN: /* physical end of function */ |
6f715d66 SC |
1938 | dst->symbol.flags = BSF_LOCAL; |
1939 | /* | |
1940 | Base the value as an index from the base of the section | |
1941 | */ | |
1942 | dst->symbol.value = (src->u.syment.n_value) - dst->symbol.section->vma; | |
6f715d66 | 1943 | break; |
cbdc7909 | 1944 | |
6f715d66 SC |
1945 | case C_NULL: |
1946 | case C_EXTDEF: /* external definition */ | |
1947 | case C_ULABEL: /* undefined label */ | |
1948 | case C_USTATIC: /* undefined static */ | |
1949 | case C_LINE: /* line # reformatted as symbol table entry */ | |
1950 | case C_ALIAS: /* duplicate tag */ | |
1951 | case C_HIDDEN: /* ext symbol in dmert public lib */ | |
6f715d66 | 1952 | default: |
cbdc7909 JG |
1953 | |
1954 | fprintf(stderr,"Unrecognized storage class %d\n", | |
41f50af0 | 1955 | src->u.syment.n_sclass); |
954d412a | 1956 | /* abort();*/ |
6f715d66 SC |
1957 | dst->symbol.flags = BSF_DEBUGGING; |
1958 | dst->symbol.value = (src->u.syment.n_value); | |
6f715d66 SC |
1959 | break; |
1960 | } | |
cbdc7909 | 1961 | |
6590a8c9 | 1962 | /* BFD_ASSERT(dst->symbol.flags != 0);*/ |
cbdc7909 | 1963 | |
6f715d66 | 1964 | dst->native = src; |
cbdc7909 | 1965 | |
6f715d66 SC |
1966 | dst->symbol.udata = 0; |
1967 | dst->lineno = (alent *) NULL; | |
1968 | this_index += (src->u.syment.n_numaux) + 1; | |
1969 | dst++; | |
1970 | number_of_symbols++; | |
1971 | } /* walk the native symtab */ | |
1972 | } /* bfdize the native symtab */ | |
cbdc7909 | 1973 | |
6f715d66 SC |
1974 | obj_symbols(abfd) = cached_area; |
1975 | obj_raw_syments(abfd) = native_symbols; | |
cbdc7909 | 1976 | |
8070f29d | 1977 | obj_conv_table_size (abfd) = bfd_get_symcount (abfd); |
6f715d66 SC |
1978 | bfd_get_symcount(abfd) = number_of_symbols; |
1979 | obj_convert(abfd) = table_ptr; | |
1980 | /* Slurp the line tables for each section too */ | |
1981 | { | |
1982 | asection *p; | |
1983 | p = abfd->sections; | |
1984 | while (p) { | |
1985 | coff_slurp_line_table(abfd, p); | |
1986 | p = p->next; | |
0f268757 | 1987 | } |
6f715d66 SC |
1988 | } |
1989 | return true; | |
1990 | } /* coff_slurp_symbol_table() */ | |
0f268757 | 1991 | |
9fda1a39 SC |
1992 | /* |
1993 | SUBSUBSECTION | |
1994 | Reading Relocations | |
1995 | ||
9fda1a39 SC |
1996 | Coff relocations are easily transformed into the internal BFD form |
1997 | (@code{arelent}). | |
1998 | ||
1999 | Reading a coff relocation table is done in the following stages: | |
2000 | ||
2001 | o The entire coff relocation table is read into memory. | |
2002 | ||
2003 | o Each relocation is processed in turn, first it is swapped from the | |
2004 | external to the internal form. | |
2005 | ||
2006 | o The symbol referenced in the relocation's symbol index is | |
2007 | turned intoa pointer into the canonical symbol table. Note | |
2008 | that this table is the same as the one returned by a call to | |
2009 | @code{bfd_canonicalize_symtab}. The back end will call the | |
2010 | routine and save the result if a canonicalization hasn't been done. | |
2011 | ||
2012 | o The reloc index is turned into a pointer to a howto | |
2013 | structure, in a back end specific way. For instance, the 386 | |
2014 | and 960 use the @code{r_type} to directly produce an index | |
2015 | into a howto table vector; the 88k subtracts a number from the | |
2016 | @code{r_type} field and creates an addend field. | |
2017 | ||
2018 | ||
6f715d66 SC |
2019 | */ |
2020 | ||
3b4f1a5d SC |
2021 | #ifndef CALC_ADDEND |
2022 | #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \ | |
0e238aa7 | 2023 | if (ptr && bfd_asymbol_bfd(ptr) == abfd \ |
3b4f1a5d SC |
2024 | && ((ptr->flags & BSF_OLD_COMMON)== 0)) \ |
2025 | { \ | |
2026 | cache_ptr->addend = -(ptr->section->vma + ptr->value); \ | |
2027 | } \ | |
2028 | else { \ | |
2029 | cache_ptr->addend = 0; \ | |
2030 | } | |
2031 | #endif | |
2032 | ||
0f268757 SC |
2033 | static boolean |
2034 | DEFUN(coff_slurp_reloc_table,(abfd, asect, symbols), | |
2035 | bfd *abfd AND | |
2036 | sec_ptr asect AND | |
2037 | asymbol **symbols) | |
85e0c721 | 2038 | { |
3b4f1a5d SC |
2039 | RELOC *native_relocs; |
2040 | arelent *reloc_cache; | |
2041 | arelent *cache_ptr; | |
2042 | ||
2043 | unsigned int idx; | |
2044 | ||
2045 | if (asect->relocation) | |
2046 | return true; | |
2047 | if (asect->reloc_count == 0) | |
2048 | return true; | |
2049 | if (asect->flags & SEC_CONSTRUCTOR) | |
2050 | return true; | |
3b4f1a5d SC |
2051 | if (!coff_slurp_symbol_table(abfd)) |
2052 | return false; | |
3b4f1a5d SC |
2053 | native_relocs = |
2054 | (RELOC *) buy_and_read(abfd, | |
2055 | asect->rel_filepos, | |
2056 | SEEK_SET, | |
2057 | (size_t) (RELSZ * | |
2058 | asect->reloc_count)); | |
2059 | reloc_cache = (arelent *) | |
2060 | bfd_alloc(abfd, (size_t) (asect->reloc_count * sizeof(arelent))); | |
2061 | ||
2062 | if (reloc_cache == NULL) { | |
2063 | bfd_error = no_memory; | |
2064 | return false; | |
2065 | } | |
2066 | ||
2067 | ||
2068 | for (idx = 0; idx < asect->reloc_count; idx ++) | |
2069 | { | |
616ebcfd | 2070 | #ifdef RELOC_PROCESSING |
3b4f1a5d | 2071 | struct internal_reloc dst; |
3b4f1a5d SC |
2072 | struct external_reloc *src; |
2073 | ||
2074 | cache_ptr = reloc_cache + idx; | |
2075 | src = native_relocs + idx; | |
3b4f1a5d SC |
2076 | bfd_swap_reloc_in(abfd, src, &dst); |
2077 | ||
9898b929 JG |
2078 | RELOC_PROCESSING(cache_ptr, &dst, symbols, abfd, asect); |
2079 | #else | |
616ebcfd SC |
2080 | struct internal_reloc dst; |
2081 | asymbol *ptr; | |
2082 | struct external_reloc *src; | |
2083 | ||
2084 | cache_ptr = reloc_cache + idx; | |
2085 | src = native_relocs + idx; | |
2086 | ||
2087 | bfd_swap_reloc_in(abfd, src, &dst); | |
2088 | ||
9898b929 JG |
2089 | |
2090 | cache_ptr->address = dst.r_vaddr; | |
2091 | ||
3b4f1a5d | 2092 | if (dst.r_symndx != -1) |
8070f29d KR |
2093 | { |
2094 | /* @@ Should never be greater than count of symbols! */ | |
2095 | if (dst.r_symndx >= obj_conv_table_size (abfd)) | |
2096 | abort (); | |
9898b929 JG |
2097 | cache_ptr->sym_ptr_ptr = symbols + obj_convert(abfd)[dst.r_symndx]; |
2098 | ptr = *(cache_ptr->sym_ptr_ptr); | |
8070f29d | 2099 | } |
3b4f1a5d | 2100 | else |
8070f29d KR |
2101 | { |
2102 | cache_ptr->sym_ptr_ptr= bfd_abs_section.symbol_ptr_ptr; | |
2103 | ptr = 0; | |
2104 | } | |
85e0c721 | 2105 | |
3b4f1a5d SC |
2106 | /* |
2107 | The symbols definitions that we have read in have been | |
2108 | relocated as if their sections started at 0. But the offsets | |
2109 | refering to the symbols in the raw data have not been | |
2110 | modified, so we have to have a negative addend to compensate. | |
2111 | ||
2112 | Note that symbols which used to be common must be left alone */ | |
cbdc7909 | 2113 | |
3b4f1a5d SC |
2114 | /* Calculate any reloc addend by looking at the symbol */ |
2115 | CALC_ADDEND(abfd, ptr, dst, cache_ptr); | |
cbdc7909 | 2116 | |
3b4f1a5d | 2117 | cache_ptr->address -= asect->vma; |
e98e6ec1 | 2118 | /* !! cache_ptr->section = (asection *) NULL;*/ |
20fdc627 | 2119 | |
3b4f1a5d | 2120 | /* Fill in the cache_ptr->howto field from dst.r_type */ |
e98e6ec1 | 2121 | RTYPE2HOWTO(cache_ptr, &dst); |
9898b929 JG |
2122 | #endif |
2123 | ||
2124 | } | |
cbdc7909 | 2125 | |
3b4f1a5d SC |
2126 | asect->relocation = reloc_cache; |
2127 | return true; | |
85e0c721 | 2128 | } |
0f268757 SC |
2129 | |
2130 | ||
2131 | /* This is stupid. This function should be a boolean predicate */ | |
2132 | static unsigned int | |
85e0c721 SC |
2133 | DEFUN(coff_canonicalize_reloc, (abfd, section, relptr, symbols), |
2134 | bfd *abfd AND | |
2135 | sec_ptr section AND | |
2136 | arelent **relptr AND | |
2137 | asymbol **symbols) | |
2138 | { | |
e98e6ec1 SC |
2139 | arelent *tblptr = section->relocation; |
2140 | unsigned int count = 0; | |
cbdc7909 | 2141 | |
cbdc7909 | 2142 | |
e98e6ec1 SC |
2143 | if (section->flags & SEC_CONSTRUCTOR) |
2144 | { | |
2145 | /* this section has relocs made up by us, they are not in the | |
2146 | file, so take them out of their chain and place them into | |
2147 | the data area provided */ | |
2148 | arelent_chain *chain = section->constructor_chain; | |
2149 | for (count = 0; count < section->reloc_count; count ++) | |
85e0c721 | 2150 | { |
e98e6ec1 SC |
2151 | *relptr ++ = &chain->relent; |
2152 | chain = chain->next; | |
85e0c721 | 2153 | } |
e98e6ec1 SC |
2154 | |
2155 | } | |
2156 | else | |
2157 | { | |
2158 | coff_slurp_reloc_table(abfd, section, symbols); | |
85e0c721 SC |
2159 | |
2160 | ||
e98e6ec1 SC |
2161 | tblptr = section->relocation; |
2162 | if (!tblptr) | |
2163 | return 0; | |
85e0c721 | 2164 | |
e98e6ec1 SC |
2165 | for (; count++ < section->reloc_count;) |
2166 | *relptr++ = tblptr++; | |
cbdc7909 | 2167 | |
85e0c721 | 2168 | |
e98e6ec1 SC |
2169 | } |
2170 | *relptr = 0; | |
2171 | return section->reloc_count; | |
85e0c721 | 2172 | } |
0f268757 | 2173 | |
0f268757 SC |
2174 | #ifdef GNU960 |
2175 | file_ptr | |
2176 | coff_sym_filepos(abfd) | |
2177 | bfd *abfd; | |
2178 | { | |
2179 | return obj_sym_filepos(abfd); | |
2180 | } | |
2181 | #endif | |
2182 | ||
075caafd ILT |
2183 | #ifndef coff_reloc16_extra_cases |
2184 | #define coff_reloc16_extra_cases \ | |
2185 | (void (*) PARAMS ((bfd *, bfd_seclet_type *, arelent *, bfd_byte *,\ | |
2186 | unsigned int *, unsigned int *))) abort | |
8ad2a31d | 2187 | #endif |
6590a8c9 | 2188 | |
785150c9 | 2189 | static CONST bfd_coff_backend_data bfd_coff_std_swap_table = { |
07de8e96 KR |
2190 | coff_swap_aux_in, coff_swap_sym_in, coff_swap_lineno_in, |
2191 | coff_swap_aux_out, coff_swap_sym_out, | |
2192 | coff_swap_lineno_out, coff_swap_reloc_out, | |
2193 | coff_swap_filehdr_out, coff_swap_aouthdr_out, | |
2194 | coff_swap_scnhdr_out, | |
075caafd ILT |
2195 | FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, LINESZ, |
2196 | #ifdef COFF_LONG_FILENAMES | |
2197 | true, | |
2198 | #else | |
2199 | false, | |
07de8e96 | 2200 | #endif |
075caafd ILT |
2201 | coff_swap_filehdr_in, coff_swap_aouthdr_in, coff_swap_scnhdr_in, |
2202 | coff_bad_format_hook, coff_set_arch_mach_hook, coff_mkobject_hook, | |
2203 | styp_to_sec_flags, coff_make_section_hook, coff_set_alignment_hook, | |
2204 | coff_slurp_symbol_table, symname_in_debug_hook, coff_reloc16_extra_cases | |
2205 | }; | |
0f268757 SC |
2206 | |
2207 | #define coff_core_file_failing_command _bfd_dummy_core_file_failing_command | |
2208 | #define coff_core_file_failing_signal _bfd_dummy_core_file_failing_signal | |
2209 | #define coff_core_file_matches_executable_p _bfd_dummy_core_file_matches_executable_p | |
2210 | #define coff_slurp_armap bfd_slurp_coff_armap | |
2211 | #define coff_slurp_extended_name_table _bfd_slurp_extended_name_table | |
2212 | #define coff_truncate_arname bfd_dont_truncate_arname | |
2213 | #define coff_openr_next_archived_file bfd_generic_openr_next_archived_file | |
2214 | #define coff_generic_stat_arch_elt bfd_generic_stat_arch_elt | |
2215 | #define coff_get_section_contents bfd_generic_get_section_contents | |
2216 | #define coff_close_and_cleanup bfd_generic_close_and_cleanup | |
6f715d66 | 2217 | |
1f29e30b | 2218 | #define coff_bfd_debug_info_start bfd_void |
6f715d66 | 2219 | #define coff_bfd_debug_info_end bfd_void |
1f29e30b JG |
2220 | #define coff_bfd_debug_info_accumulate \ |
2221 | (void (*) PARAMS ((bfd *, struct sec *))) bfd_void | |
6590a8c9 | 2222 | #define coff_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents |
1f29e30b | 2223 | #define coff_bfd_relax_section bfd_generic_relax_section |