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6d7c88c3 | 1 | /* Support for the generic parts of most COFF variants, for BFD. |
f135c692 | 2 | Copyright 1990, 91, 92, 93, 94, 1995 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 | |
9783e04a | 21 | /* |
6590a8c9 | 22 | Most of this hacked by Steve Chamberlain, |
9783e04a | 23 | sac@cygnus.com |
6590a8c9 | 24 | */ |
9fda1a39 | 25 | /* |
6f715d66 | 26 | |
9fda1a39 SC |
27 | SECTION |
28 | coff backends | |
29 | ||
9fda1a39 | 30 | BFD supports a number of different flavours of coff format. |
c188b0be | 31 | The major differences between formats are the sizes and |
9fda1a39 | 32 | alignments of fields in structures on disk, and the occasional |
9783e04a | 33 | extra field. |
9fda1a39 | 34 | |
c188b0be | 35 | Coff in all its varieties is implemented with a few common |
9fda1a39 SC |
36 | files and a number of implementation specific files. For |
37 | example, The 88k bcs coff format is implemented in the file | |
c188b0be DM |
38 | @file{coff-m88k.c}. This file @code{#include}s |
39 | @file{coff/m88k.h} which defines the external structure of the | |
40 | coff format for the 88k, and @file{coff/internal.h} which | |
41 | defines the internal structure. @file{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 | |
c188b0be DM |
46 | @file{coff-i960.c}. This file has the same structure as |
47 | @file{coff-m88k.c}, except that it includes @file{coff/i960.h} | |
9783e04a | 48 | rather than @file{coff-m88k.h}. |
9fda1a39 SC |
49 | |
50 | SUBSECTION | |
c188b0be | 51 | Porting to a new version of coff |
9fda1a39 | 52 | |
9fda1a39 | 53 | The recommended method is to select from the existing |
c188b0be DM |
54 | implementations the version of coff which is most like the one |
55 | you want to use. For example, we'll say that i386 coff is | |
9fda1a39 | 56 | the one you select, and that your coff flavour is called foo. |
c188b0be DM |
57 | Copy @file{i386coff.c} to @file{foocoff.c}, copy |
58 | @file{../include/coff/i386.h} to @file{../include/coff/foo.h}, | |
59 | and add the lines to @file{targets.c} and @file{Makefile.in} | |
9fda1a39 | 60 | so that your new back end is used. Alter the shapes of the |
c188b0be | 61 | structures in @file{../include/coff/foo.h} so that they match |
9fda1a39 | 62 | what you need. You will probably also have to add |
c188b0be | 63 | @code{#ifdef}s to the code in @file{coff/internal.h} and |
9783e04a | 64 | @file{coffcode.h} if your version of coff is too wild. |
9fda1a39 SC |
65 | |
66 | You can verify that your new BFD backend works quite simply by | |
c188b0be DM |
67 | building @file{objdump} from the @file{binutils} directory, |
68 | and making sure that its version of what's going on and your | |
69 | host system's 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 | |
9fda1a39 SC |
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 | |
c188b0be | 76 | How the coff backend works |
9fda1a39 | 77 | |
075caafd | 78 | SUBSUBSECTION |
c188b0be | 79 | File layout |
075caafd ILT |
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 | |
c188b0be | 94 | @file{coffcode.h}. This header file includes executable C code. |
075caafd ILT |
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 | 111 | SUBSUBSECTION |
c188b0be | 112 | Bit twiddling |
9fda1a39 | 113 | |
9fda1a39 | 114 | Each flavour of coff supported in BFD has its own header file |
c188b0be DM |
115 | describing the external layout of the structures. There is also |
116 | an internal description of the coff layout, in | |
117 | @file{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 | |
c188b0be | 123 | coff; it is the duty of the coff version specific include file |
9fda1a39 | 124 | to override the definitions of various packing routines in |
c188b0be | 125 | @file{coffcode.h}. E.g., the size of line number entry in coff is |
9fda1a39 SC |
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 | |
c188b0be | 129 | coff which has a varying field size not catered to at the |
9783e04a | 130 | moment. To port BFD, that person will have to add more @code{#defines}. |
9fda1a39 SC |
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 | |
c188b0be | 142 | on the way out, making cross ports much safer. Doing so also |
9fda1a39 SC |
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 | |
c188b0be | 147 | Symbol reading |
9fda1a39 | 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 | |
c188b0be | 151 | table. The back end gets around this problem by keeping the original |
9783e04a | 152 | symbol table around, "behind the scenes". |
9fda1a39 SC |
153 | |
154 | When a symbol table is requested (through a call to | |
c188b0be | 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 | |
c188b0be | 162 | fields change depending upon context: a field that is a |
9fda1a39 | 163 | pointer to another structure in the symbol table at one moment |
c188b0be | 164 | may be the size in bytes of a structure at the next. Another |
9fda1a39 | 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 | |
9783e04a | 169 | (@code{".file"}). |
9fda1a39 SC |
170 | |
171 | At this time the symbol names are moved around. Coff stores | |
172 | all symbols less than nine characters long physically | |
c188b0be | 173 | within the symbol table; longer strings are kept at the end of |
9fda1a39 | 174 | the file in the string table. This pass moves all strings |
c188b0be | 175 | into memory and replaces them with pointers to the strings. |
9fda1a39 SC |
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 | |
c188b0be | 182 | @code{asymbol}. @xref{Symbols}. The generated canonical table |
9783e04a | 183 | shares strings with the hidden internal symbol table. |
9fda1a39 SC |
184 | |
185 | Any linenumbers are read from the coff file too, and attached | |
9783e04a | 186 | to the symbols which own the functions the linenumbers belong to. |
9fda1a39 SC |
187 | |
188 | SUBSUBSECTION | |
c188b0be | 189 | Symbol writing |
9fda1a39 | 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} | |
c188b0be DM |
193 | structure remembers the BFD from which the symbol was taken, and on |
194 | output the back end makes sure that the same destination target as | |
9fda1a39 SC |
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 | |
c188b0be | 218 | section. This transformation uses the |
9fda1a39 | 219 | <<output_section>> field of the @code{asymbol}'s |
9783e04a | 220 | @code{asection} @xref{Sections}. |
9fda1a39 | 221 | |
c188b0be | 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 | |
c188b0be | 228 | to a symbol into the index into the symbol table of the asymbol. |
9fda1a39 | 229 | |
c188b0be | 230 | o <<coff_write_symbols>> |
616ebcfd | 231 | |
9fda1a39 SC |
232 | This routine runs through the symbol table and patches up the |
233 | symbols from their internal form into the coff way, calls the | |
9783e04a | 234 | bit twiddlers, and writes out the table to the file. |
6f715d66 | 235 | |
9fda1a39 | 236 | */ |
6f715d66 | 237 | |
9fda1a39 | 238 | /* |
616ebcfd SC |
239 | INTERNAL_DEFINITION |
240 | coff_symbol_type | |
6f715d66 | 241 | |
616ebcfd | 242 | DESCRIPTION |
c188b0be DM |
243 | The hidden information for an <<asymbol>> is described in a |
244 | <<combined_entry_type>>: | |
6f715d66 | 245 | |
616ebcfd | 246 | CODE_FRAGMENT |
e98e6ec1 | 247 | . |
9783e04a | 248 | .typedef struct coff_ptr_struct |
616ebcfd SC |
249 | .{ |
250 | . | |
251 | . {* Remembers the offset from the first symbol in the file for | |
252 | . this symbol. Generated by coff_renumber_symbols. *} | |
253 | .unsigned int offset; | |
254 | . | |
9783e04a DM |
255 | . {* Should the value of this symbol be renumbered. Used for |
256 | . XCOFF C_BSTAT symbols. Set by coff_slurp_symbol_table. *} | |
257 | .unsigned int fix_value : 1; | |
258 | . | |
616ebcfd SC |
259 | . {* Should the tag field of this symbol be renumbered. |
260 | . Created by coff_pointerize_aux. *} | |
9783e04a | 261 | .unsigned int fix_tag : 1; |
616ebcfd SC |
262 | . |
263 | . {* Should the endidx field of this symbol be renumbered. | |
264 | . Created by coff_pointerize_aux. *} | |
9783e04a DM |
265 | .unsigned int fix_end : 1; |
266 | . | |
267 | . {* Should the x_csect.x_scnlen field be renumbered. | |
268 | . Created by coff_slurp_symbol_table. *} | |
269 | .unsigned int fix_scnlen : 1; | |
616ebcfd SC |
270 | . |
271 | . {* The container for the symbol structure as read and translated | |
272 | . from the file. *} | |
273 | . | |
274 | .union { | |
275 | . union internal_auxent auxent; | |
276 | . struct internal_syment syment; | |
277 | . } u; | |
278 | .} combined_entry_type; | |
279 | . | |
280 | . | |
281 | .{* Each canonical asymbol really looks like this: *} | |
282 | . | |
283 | .typedef struct coff_symbol_struct | |
284 | .{ | |
285 | . {* The actual symbol which the rest of BFD works with *} | |
286 | .asymbol symbol; | |
287 | . | |
288 | . {* A pointer to the hidden information for this symbol *} | |
289 | .combined_entry_type *native; | |
290 | . | |
291 | . {* A pointer to the linenumber information for this symbol *} | |
292 | .struct lineno_cache_entry *lineno; | |
293 | . | |
d58b7049 SC |
294 | . {* Have the line numbers been relocated yet ? *} |
295 | .boolean done_lineno; | |
616ebcfd | 296 | .} coff_symbol_type; |
6f715d66 | 297 | |
6f715d66 | 298 | |
0f268757 SC |
299 | */ |
300 | ||
075caafd | 301 | #include "coffswap.h" |
0f268757 SC |
302 | \f |
303 | /* void warning(); */ | |
6f715d66 | 304 | |
cbdc7909 JG |
305 | /* |
306 | * Return a word with STYP_* (scnhdr.s_flags) flags set to represent the | |
41f50af0 SC |
307 | * incoming SEC_* flags. The inverse of this function is styp_to_sec_flags(). |
308 | * NOTE: If you add to/change this routine, you should mirror the changes | |
309 | * in styp_to_sec_flags(). | |
310 | */ | |
cbdc7909 | 311 | static long |
fbb61b50 SC |
312 | sec_to_styp_flags (sec_name, sec_flags) |
313 | CONST char *sec_name; | |
314 | flagword sec_flags; | |
41f50af0 | 315 | { |
47cf4997 SC |
316 | long styp_flags = 0; |
317 | ||
9783e04a | 318 | if (!strcmp (sec_name, _TEXT)) |
fbb61b50 SC |
319 | { |
320 | styp_flags = STYP_TEXT; | |
321 | } | |
9783e04a | 322 | else if (!strcmp (sec_name, _DATA)) |
fbb61b50 SC |
323 | { |
324 | styp_flags = STYP_DATA; | |
b26059aa | 325 | #ifdef TWO_DATA_SECS |
fbb61b50 | 326 | } |
9783e04a | 327 | else if (!strcmp (sec_name, ".data2")) |
fbb61b50 SC |
328 | { |
329 | styp_flags = STYP_DATA; | |
9783e04a | 330 | #endif /* TWO_DATA_SECS */ |
fbb61b50 | 331 | } |
9783e04a | 332 | else if (!strcmp (sec_name, _BSS)) |
fbb61b50 SC |
333 | { |
334 | styp_flags = STYP_BSS; | |
8c4a1ace | 335 | #ifdef _COMMENT |
9783e04a DM |
336 | } |
337 | else if (!strcmp (sec_name, _COMMENT)) | |
fbb61b50 SC |
338 | { |
339 | styp_flags = STYP_INFO; | |
9783e04a | 340 | #endif /* _COMMENT */ |
b26059aa | 341 | #ifdef _LIB |
fbb61b50 | 342 | } |
9783e04a | 343 | else if (!strcmp (sec_name, _LIB)) |
fbb61b50 SC |
344 | { |
345 | styp_flags = STYP_LIB; | |
9783e04a | 346 | #endif /* _LIB */ |
35d835c4 | 347 | #ifdef _LIT |
fbb61b50 | 348 | } |
35d835c4 | 349 | else if (!strcmp (sec_name, _LIT)) |
fbb61b50 SC |
350 | { |
351 | styp_flags = STYP_LIT; | |
35d835c4 | 352 | #endif /* _LIT */ |
fbb61b50 | 353 | } |
9783e04a | 354 | else if (!strcmp (sec_name, ".debug")) |
fbb61b50 | 355 | { |
9783e04a DM |
356 | #ifdef STYP_DEBUG |
357 | styp_flags = STYP_DEBUG; | |
358 | #else | |
fbb61b50 | 359 | styp_flags = STYP_INFO; |
9783e04a | 360 | #endif |
fbb61b50 | 361 | } |
9783e04a DM |
362 | else if (!strcmp (sec_name, ".stab") |
363 | || !strncmp (sec_name, ".stabstr", 8)) | |
fbb61b50 SC |
364 | { |
365 | styp_flags = STYP_INFO; | |
366 | } | |
47cf4997 | 367 | /* Try and figure out what it should be */ |
9783e04a | 368 | else if (sec_flags & SEC_CODE) |
fbb61b50 SC |
369 | { |
370 | styp_flags = STYP_TEXT; | |
371 | } | |
9783e04a | 372 | else if (sec_flags & SEC_DATA) |
fbb61b50 SC |
373 | { |
374 | styp_flags = STYP_DATA; | |
375 | } | |
47cf4997 | 376 | else if (sec_flags & SEC_READONLY) |
fbb61b50 | 377 | { |
47cf4997 | 378 | #ifdef STYP_LIT /* 29k readonly text/data section */ |
fbb61b50 | 379 | styp_flags = STYP_LIT; |
41f50af0 | 380 | #else |
fbb61b50 | 381 | styp_flags = STYP_TEXT; |
9783e04a | 382 | #endif /* STYP_LIT */ |
fbb61b50 | 383 | } |
47cf4997 | 384 | else if (sec_flags & SEC_LOAD) |
fbb61b50 SC |
385 | { |
386 | styp_flags = STYP_TEXT; | |
387 | } | |
388 | else if (sec_flags & SEC_ALLOC) | |
389 | { | |
390 | styp_flags = STYP_BSS; | |
391 | } | |
41f50af0 | 392 | |
b26059aa | 393 | #ifdef STYP_NOLOAD |
c16313f0 | 394 | if ((sec_flags & (SEC_NEVER_LOAD | SEC_COFF_SHARED_LIBRARY)) != 0) |
9783e04a | 395 | styp_flags |= STYP_NOLOAD; |
b26059aa ILT |
396 | #endif |
397 | ||
9783e04a | 398 | return (styp_flags); |
41f50af0 | 399 | } |
cbdc7909 | 400 | /* |
41f50af0 | 401 | * Return a word with SEC_* flags set to represent the incoming |
cbdc7909 JG |
402 | * STYP_* flags (from scnhdr.s_flags). The inverse of this |
403 | * function is sec_to_styp_flags(). | |
41f50af0 SC |
404 | * NOTE: If you add to/change this routine, you should mirror the changes |
405 | * in sec_to_styp_flags(). | |
406 | */ | |
cbdc7909 | 407 | static flagword |
e8fbe6d9 ILT |
408 | styp_to_sec_flags (abfd, hdr, name) |
409 | bfd *abfd; | |
57a1867e | 410 | PTR hdr; |
e8fbe6d9 | 411 | const char *name; |
41f50af0 | 412 | { |
075caafd ILT |
413 | struct internal_scnhdr *internal_s = (struct internal_scnhdr *) hdr; |
414 | long styp_flags = internal_s->s_flags; | |
9783e04a | 415 | flagword sec_flags = 0; |
41f50af0 | 416 | |
b26059aa ILT |
417 | #ifdef STYP_NOLOAD |
418 | if (styp_flags & STYP_NOLOAD) | |
9783e04a DM |
419 | { |
420 | sec_flags |= SEC_NEVER_LOAD; | |
421 | } | |
b26059aa ILT |
422 | #endif /* STYP_NOLOAD */ |
423 | ||
8f718ed3 ILT |
424 | /* For 386 COFF, at least, an unloadable text or data section is |
425 | actually a shared library section. */ | |
426 | if (styp_flags & STYP_TEXT) | |
9783e04a DM |
427 | { |
428 | if (sec_flags & SEC_NEVER_LOAD) | |
c16313f0 | 429 | sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY; |
9783e04a DM |
430 | else |
431 | sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC; | |
432 | } | |
8f718ed3 | 433 | else if (styp_flags & STYP_DATA) |
9783e04a DM |
434 | { |
435 | if (sec_flags & SEC_NEVER_LOAD) | |
c16313f0 | 436 | sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY; |
9783e04a DM |
437 | else |
438 | sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC; | |
439 | } | |
440 | else if (styp_flags & STYP_BSS) | |
441 | { | |
35d835c4 | 442 | #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY |
9783e04a | 443 | if (sec_flags & SEC_NEVER_LOAD) |
c16313f0 | 444 | sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY; |
9783e04a | 445 | else |
35d835c4 | 446 | #endif |
9783e04a DM |
447 | sec_flags |= SEC_ALLOC; |
448 | } | |
449 | else if (styp_flags & STYP_INFO) | |
fbb61b50 | 450 | { |
b5b056fc KR |
451 | /* We mark these as SEC_DEBUGGING, but only if COFF_PAGE_SIZE is |
452 | defined. coff_compute_section_file_positions uses | |
453 | COFF_PAGE_SIZE to ensure that the low order bits of the | |
454 | section VMA and the file offset match. If we don't know | |
455 | COFF_PAGE_SIZE, we can't ensure the correct correspondence, | |
456 | and demand page loading of the file will fail. */ | |
457 | #ifdef COFF_PAGE_SIZE | |
458 | sec_flags |= SEC_DEBUGGING; | |
459 | #endif | |
fbb61b50 | 460 | } |
e8fbe6d9 ILT |
461 | else if (strcmp (name, _TEXT) == 0) |
462 | { | |
463 | if (sec_flags & SEC_NEVER_LOAD) | |
464 | sec_flags |= SEC_CODE | SEC_COFF_SHARED_LIBRARY; | |
465 | else | |
466 | sec_flags |= SEC_CODE | SEC_LOAD | SEC_ALLOC; | |
467 | } | |
468 | else if (strcmp (name, _DATA) == 0 | |
469 | #ifdef TWO_DATA_SECS | |
470 | || strcmp (name, ".data2") == 0 | |
471 | #endif | |
472 | ) | |
473 | { | |
474 | if (sec_flags & SEC_NEVER_LOAD) | |
475 | sec_flags |= SEC_DATA | SEC_COFF_SHARED_LIBRARY; | |
476 | else | |
477 | sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC; | |
478 | } | |
479 | else if (strcmp (name, _BSS) == 0) | |
480 | { | |
481 | #ifdef BSS_NOLOAD_IS_SHARED_LIBRARY | |
482 | if (sec_flags & SEC_NEVER_LOAD) | |
483 | sec_flags |= SEC_ALLOC | SEC_COFF_SHARED_LIBRARY; | |
484 | else | |
485 | #endif | |
486 | sec_flags |= SEC_ALLOC; | |
487 | } | |
488 | else if (strcmp (name, ".debug") == 0 | |
489 | #ifdef _COMMENT | |
490 | || strcmp (name, _COMMENT) == 0 | |
491 | #endif | |
492 | || strcmp (name, ".stab") == 0 | |
493 | || strcmp (name, ".stabstr") == 0) | |
494 | { | |
495 | #ifdef COFF_PAGE_SIZE | |
496 | sec_flags |= SEC_DEBUGGING; | |
497 | #endif | |
498 | } | |
499 | #ifdef _LIB | |
500 | else if (strcmp (name, _LIB) == 0) | |
501 | ; | |
502 | #endif | |
503 | #ifdef _LIT | |
504 | else if (strcmp (name, _LIT) == 0) | |
505 | { | |
506 | sec_flags = SEC_LOAD | SEC_ALLOC | SEC_READONLY; | |
507 | } | |
508 | #endif | |
8070f29d | 509 | else |
9783e04a DM |
510 | { |
511 | sec_flags |= SEC_ALLOC | SEC_LOAD; | |
512 | } | |
b26059aa | 513 | |
8070f29d KR |
514 | #ifdef STYP_LIT /* A29k readonly text/data section type */ |
515 | if ((styp_flags & STYP_LIT) == STYP_LIT) | |
9783e04a DM |
516 | { |
517 | sec_flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY); | |
518 | } | |
519 | #endif /* STYP_LIT */ | |
8070f29d KR |
520 | #ifdef STYP_OTHER_LOAD /* Other loaded sections */ |
521 | if (styp_flags & STYP_OTHER_LOAD) | |
9783e04a DM |
522 | { |
523 | sec_flags = (SEC_LOAD | SEC_ALLOC); | |
524 | } | |
525 | #endif /* STYP_SDATA */ | |
41f50af0 | 526 | |
9783e04a | 527 | return (sec_flags); |
41f50af0 | 528 | } |
0f268757 | 529 | |
f135c692 | 530 | #define get_index(symbol) ((symbol)->udata.i) |
0f268757 | 531 | |
07de8e96 KR |
532 | /* |
533 | INTERNAL_DEFINITION | |
534 | bfd_coff_backend_data | |
535 | ||
536 | CODE_FRAGMENT | |
537 | ||
c188b0be | 538 | Special entry points for gdb to swap in coff symbol table parts: |
9783e04a | 539 | .typedef struct |
60ac749c | 540 | .{ |
07de8e96 | 541 | . void (*_bfd_coff_swap_aux_in) PARAMS (( |
330595d0 | 542 | . bfd *abfd, |
07de8e96 KR |
543 | . PTR ext, |
544 | . int type, | |
330595d0 ILT |
545 | . int class, |
546 | . int indaux, | |
547 | . int numaux, | |
07de8e96 KR |
548 | . PTR in)); |
549 | . | |
550 | . void (*_bfd_coff_swap_sym_in) PARAMS (( | |
551 | . bfd *abfd , | |
552 | . PTR ext, | |
553 | . PTR in)); | |
554 | . | |
555 | . void (*_bfd_coff_swap_lineno_in) PARAMS (( | |
556 | . bfd *abfd, | |
557 | . PTR ext, | |
558 | . PTR in)); | |
559 | . | |
560 | ||
c188b0be | 561 | Special entry points for gas to swap out coff parts: |
07de8e96 KR |
562 | |
563 | . unsigned int (*_bfd_coff_swap_aux_out) PARAMS (( | |
564 | . bfd *abfd, | |
565 | . PTR in, | |
566 | . int type, | |
567 | . int class, | |
330595d0 ILT |
568 | . int indaux, |
569 | . int numaux, | |
07de8e96 KR |
570 | . PTR ext)); |
571 | . | |
572 | . unsigned int (*_bfd_coff_swap_sym_out) PARAMS (( | |
573 | . bfd *abfd, | |
574 | . PTR in, | |
575 | . PTR ext)); | |
576 | . | |
577 | . unsigned int (*_bfd_coff_swap_lineno_out) PARAMS (( | |
578 | . bfd *abfd, | |
579 | . PTR in, | |
580 | . PTR ext)); | |
581 | . | |
582 | . unsigned int (*_bfd_coff_swap_reloc_out) PARAMS (( | |
583 | . bfd *abfd, | |
584 | . PTR src, | |
585 | . PTR dst)); | |
586 | . | |
587 | . unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS (( | |
588 | . bfd *abfd, | |
589 | . PTR in, | |
590 | . PTR out)); | |
591 | . | |
592 | . unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS (( | |
593 | . bfd *abfd, | |
594 | . PTR in, | |
595 | . PTR out)); | |
596 | . | |
597 | . unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS (( | |
598 | . bfd *abfd, | |
599 | . PTR in, | |
600 | . PTR out)); | |
601 | . | |
075caafd ILT |
602 | |
603 | Special entry points for generic COFF routines to call target | |
c188b0be | 604 | dependent COFF routines: |
075caafd ILT |
605 | |
606 | . unsigned int _bfd_filhsz; | |
607 | . unsigned int _bfd_aoutsz; | |
608 | . unsigned int _bfd_scnhsz; | |
609 | . unsigned int _bfd_symesz; | |
610 | . unsigned int _bfd_auxesz; | |
69645d10 | 611 | . unsigned int _bfd_relsz; |
075caafd ILT |
612 | . unsigned int _bfd_linesz; |
613 | . boolean _bfd_coff_long_filenames; | |
614 | . void (*_bfd_coff_swap_filehdr_in) PARAMS (( | |
615 | . bfd *abfd, | |
616 | . PTR ext, | |
617 | . PTR in)); | |
618 | . void (*_bfd_coff_swap_aouthdr_in) PARAMS (( | |
619 | . bfd *abfd, | |
620 | . PTR ext, | |
621 | . PTR in)); | |
622 | . void (*_bfd_coff_swap_scnhdr_in) PARAMS (( | |
623 | . bfd *abfd, | |
624 | . PTR ext, | |
625 | . PTR in)); | |
69645d10 ILT |
626 | . void (*_bfd_coff_swap_reloc_in) PARAMS (( |
627 | . bfd *abfd, | |
628 | . PTR ext, | |
629 | . PTR in)); | |
075caafd ILT |
630 | . boolean (*_bfd_coff_bad_format_hook) PARAMS (( |
631 | . bfd *abfd, | |
632 | . PTR internal_filehdr)); | |
633 | . boolean (*_bfd_coff_set_arch_mach_hook) PARAMS (( | |
634 | . bfd *abfd, | |
635 | . PTR internal_filehdr)); | |
636 | . PTR (*_bfd_coff_mkobject_hook) PARAMS (( | |
637 | . bfd *abfd, | |
27f524a3 ILT |
638 | . PTR internal_filehdr, |
639 | . PTR internal_aouthdr)); | |
075caafd ILT |
640 | . flagword (*_bfd_styp_to_sec_flags_hook) PARAMS (( |
641 | . bfd *abfd, | |
e8fbe6d9 ILT |
642 | . PTR internal_scnhdr, |
643 | . const char *name)); | |
075caafd ILT |
644 | . asection *(*_bfd_make_section_hook) PARAMS (( |
645 | . bfd *abfd, | |
646 | . char *name)); | |
647 | . void (*_bfd_set_alignment_hook) PARAMS (( | |
648 | . bfd *abfd, | |
649 | . asection *sec, | |
650 | . PTR internal_scnhdr)); | |
651 | . boolean (*_bfd_coff_slurp_symbol_table) PARAMS (( | |
652 | . bfd *abfd)); | |
653 | . boolean (*_bfd_coff_symname_in_debug) PARAMS (( | |
654 | . bfd *abfd, | |
655 | . struct internal_syment *sym)); | |
656 | . void (*_bfd_coff_reloc16_extra_cases) PARAMS (( | |
657 | . bfd *abfd, | |
330595d0 ILT |
658 | . struct bfd_link_info *link_info, |
659 | . struct bfd_link_order *link_order, | |
075caafd ILT |
660 | . arelent *reloc, |
661 | . bfd_byte *data, | |
662 | . unsigned int *src_ptr, | |
663 | . unsigned int *dst_ptr)); | |
fbb61b50 | 664 | . int (*_bfd_coff_reloc16_estimate) PARAMS (( |
09a28207 | 665 | . bfd *abfd, |
fbb61b50 | 666 | . asection *input_section, |
fbb61b50 | 667 | . arelent *r, |
330595d0 ILT |
668 | . unsigned int shrink, |
669 | . struct bfd_link_info *link_info)); | |
69645d10 ILT |
670 | . boolean (*_bfd_coff_sym_is_global) PARAMS (( |
671 | . bfd *abfd, | |
672 | . struct internal_syment *)); | |
673 | . void (*_bfd_coff_compute_section_file_positions) PARAMS (( | |
674 | . bfd *abfd)); | |
675 | . boolean (*_bfd_coff_relocate_section) PARAMS (( | |
676 | . bfd *output_bfd, | |
677 | . struct bfd_link_info *info, | |
678 | . bfd *input_bfd, | |
679 | . asection *input_section, | |
680 | . bfd_byte *contents, | |
681 | . struct internal_reloc *relocs, | |
682 | . struct internal_syment *syms, | |
683 | . asection **sections)); | |
f135c692 ILT |
684 | . reloc_howto_type *(*_bfd_coff_rtype_to_howto) PARAMS (( |
685 | . bfd *abfd, | |
686 | . asection *sec, | |
687 | . struct internal_reloc *rel, | |
688 | . struct coff_link_hash_entry *h, | |
689 | . struct internal_syment *sym, | |
690 | . bfd_vma *addendp)); | |
691 | . boolean (*_bfd_coff_adjust_symndx) PARAMS (( | |
692 | . bfd *obfd, | |
693 | . struct bfd_link_info *info, | |
694 | . bfd *ibfd, | |
695 | . asection *sec, | |
696 | . struct internal_reloc *reloc, | |
697 | . boolean *adjustedp)); | |
fbb61b50 | 698 | . |
07de8e96 KR |
699 | .} bfd_coff_backend_data; |
700 | . | |
07de8e96 KR |
701 | .#define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data) |
702 | . | |
330595d0 ILT |
703 | .#define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \ |
704 | . ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i)) | |
07de8e96 KR |
705 | . |
706 | .#define bfd_coff_swap_sym_in(a,e,i) \ | |
707 | . ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i)) | |
708 | . | |
709 | .#define bfd_coff_swap_lineno_in(a,e,i) \ | |
710 | . ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i)) | |
711 | . | |
712 | .#define bfd_coff_swap_reloc_out(abfd, i, o) \ | |
713 | . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o)) | |
714 | . | |
715 | .#define bfd_coff_swap_lineno_out(abfd, i, o) \ | |
716 | . ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o)) | |
717 | . | |
330595d0 ILT |
718 | .#define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \ |
719 | . ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o)) | |
07de8e96 KR |
720 | . |
721 | .#define bfd_coff_swap_sym_out(abfd, i,o) \ | |
722 | . ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o)) | |
723 | . | |
724 | .#define bfd_coff_swap_scnhdr_out(abfd, i,o) \ | |
725 | . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o)) | |
726 | . | |
727 | .#define bfd_coff_swap_filehdr_out(abfd, i,o) \ | |
728 | . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o)) | |
729 | . | |
730 | .#define bfd_coff_swap_aouthdr_out(abfd, i,o) \ | |
731 | . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o)) | |
732 | . | |
075caafd ILT |
733 | .#define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz) |
734 | .#define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz) | |
735 | .#define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz) | |
736 | .#define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz) | |
737 | .#define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz) | |
69645d10 | 738 | .#define bfd_coff_relsz(abfd) (coff_backend_info (abfd)->_bfd_relsz) |
075caafd ILT |
739 | .#define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz) |
740 | .#define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames) | |
741 | .#define bfd_coff_swap_filehdr_in(abfd, i,o) \ | |
742 | . ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o)) | |
743 | . | |
744 | .#define bfd_coff_swap_aouthdr_in(abfd, i,o) \ | |
745 | . ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o)) | |
746 | . | |
747 | .#define bfd_coff_swap_scnhdr_in(abfd, i,o) \ | |
748 | . ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o)) | |
749 | . | |
69645d10 ILT |
750 | .#define bfd_coff_swap_reloc_in(abfd, i, o) \ |
751 | . ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o)) | |
752 | . | |
075caafd ILT |
753 | .#define bfd_coff_bad_format_hook(abfd, filehdr) \ |
754 | . ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr)) | |
755 | . | |
756 | .#define bfd_coff_set_arch_mach_hook(abfd, filehdr)\ | |
757 | . ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr)) | |
27f524a3 ILT |
758 | .#define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\ |
759 | . ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr, aouthdr)) | |
075caafd | 760 | . |
e8fbe6d9 ILT |
761 | .#define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name)\ |
762 | . ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr, name)) | |
075caafd ILT |
763 | . |
764 | .#define bfd_coff_make_section_hook(abfd, name)\ | |
765 | . ((coff_backend_info (abfd)->_bfd_make_section_hook) (abfd, name)) | |
766 | . | |
767 | .#define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\ | |
768 | . ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr)) | |
769 | . | |
770 | .#define bfd_coff_slurp_symbol_table(abfd)\ | |
771 | . ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd)) | |
772 | . | |
773 | .#define bfd_coff_symname_in_debug(abfd, sym)\ | |
774 | . ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym)) | |
775 | . | |
330595d0 | 776 | .#define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)\ |
075caafd | 777 | . ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\ |
330595d0 | 778 | . (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)) |
fbb61b50 | 779 | . |
09a28207 | 780 | .#define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\ |
fbb61b50 | 781 | . ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\ |
09a28207 | 782 | . (abfd, section, reloc, shrink, link_info)) |
9783e04a | 783 | . |
69645d10 ILT |
784 | .#define bfd_coff_sym_is_global(abfd, sym)\ |
785 | . ((coff_backend_info (abfd)->_bfd_coff_sym_is_global)\ | |
786 | . (abfd, sym)) | |
787 | . | |
788 | .#define bfd_coff_compute_section_file_positions(abfd)\ | |
789 | . ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\ | |
790 | . (abfd)) | |
791 | . | |
792 | .#define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\ | |
793 | . ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\ | |
794 | . (obfd, info, ibfd, o, con, rel, isyms, secs)) | |
f135c692 ILT |
795 | .#define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\ |
796 | . ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\ | |
797 | . (abfd, sec, rel, h, sym, addendp)) | |
798 | .#define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\ | |
799 | . ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\ | |
800 | . (obfd, info, ibfd, sec, rel, adjustedp)) | |
69645d10 | 801 | . |
07de8e96 | 802 | */ |
0f268757 | 803 | |
075caafd | 804 | /* See whether the magic number matches. */ |
7a8b18b6 | 805 | |
075caafd | 806 | static boolean |
57a1867e DM |
807 | coff_bad_format_hook (abfd, filehdr) |
808 | bfd * abfd; | |
809 | PTR filehdr; | |
0f268757 | 810 | { |
075caafd | 811 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
0f268757 | 812 | |
075caafd ILT |
813 | if (BADMAG (*internal_f)) |
814 | return false; | |
0f268757 | 815 | |
075caafd ILT |
816 | /* if the optional header is NULL or not the correct size then |
817 | quit; the only difference I can see between m88k dgux headers (MC88DMAGIC) | |
818 | and Intel 960 readwrite headers (I960WRMAGIC) is that the | |
819 | optional header is of a different size. | |
cbdc7909 | 820 | |
075caafd ILT |
821 | But the mips keeps extra stuff in it's opthdr, so dont check |
822 | when doing that | |
823 | */ | |
0f268757 | 824 | |
075caafd ILT |
825 | #if defined(M88) || defined(I960) |
826 | if (internal_f->f_opthdr != 0 && AOUTSZ != internal_f->f_opthdr) | |
827 | return false; | |
0f268757 | 828 | #endif |
0f268757 | 829 | |
075caafd | 830 | return true; |
0f268757 SC |
831 | } |
832 | ||
075caafd | 833 | static asection * |
57a1867e DM |
834 | coff_make_section_hook (abfd, name) |
835 | bfd * abfd; | |
836 | char *name; | |
0f268757 | 837 | { |
075caafd | 838 | #ifdef TWO_DATA_SECS |
fbb61b50 SC |
839 | /* FIXME: This predates the call to bfd_make_section_anyway |
840 | in make_a_section_from_file, and can probably go away. */ | |
075caafd ILT |
841 | /* On SCO a file created by the Microsoft assembler can have two |
842 | .data sections. We use .data2 for the second one. */ | |
843 | if (strcmp (name, _DATA) == 0) | |
844 | return bfd_make_section (abfd, ".data2"); | |
0f268757 | 845 | #endif |
075caafd | 846 | return (asection *) NULL; |
0f268757 SC |
847 | } |
848 | ||
849 | /* | |
850 | initialize a section structure with information peculiar to this | |
851 | particular implementation of coff | |
852 | */ | |
853 | ||
075caafd | 854 | static boolean |
57a1867e DM |
855 | coff_new_section_hook (abfd, section) |
856 | bfd * abfd; | |
857 | asection * section; | |
0f268757 | 858 | { |
f135c692 ILT |
859 | section->alignment_power = COFF_DEFAULT_SECTION_ALIGNMENT_POWER; |
860 | ||
8070f29d KR |
861 | /* Allocate aux records for section symbols, to store size and |
862 | related info. | |
863 | ||
864 | @@ Shouldn't use constant multiplier here! */ | |
865 | coffsymbol (section->symbol)->native = | |
866 | (combined_entry_type *) bfd_zalloc (abfd, | |
867 | sizeof (combined_entry_type) * 10); | |
c16313f0 | 868 | |
f135c692 ILT |
869 | /* The .stab section must be aligned to 2**2 at most, because |
870 | otherwise there may be gaps in the section which gdb will not | |
871 | know how to interpret. Examining the section name is a hack, but | |
872 | that is also how gdb locates the section. We also align the | |
873 | .stabstr section this way for backward compatibility, although I | |
874 | believe it would work anyhow. */ | |
875 | if (COFF_DEFAULT_SECTION_ALIGNMENT_POWER > 2 | |
876 | && (strcmp (section->name, ".stab") == 0 | |
877 | || strcmp (section->name, ".stabstr") == 0)) | |
878 | section->alignment_power = 2; | |
c16313f0 | 879 | |
0f268757 SC |
880 | return true; |
881 | } | |
882 | ||
0f268757 | 883 | #ifdef I960 |
e98e6ec1 | 884 | |
075caafd ILT |
885 | /* Set the alignment of a BFD section. */ |
886 | ||
887 | static void | |
57a1867e DM |
888 | coff_set_alignment_hook (abfd, section, scnhdr) |
889 | bfd * abfd; | |
890 | asection * section; | |
891 | PTR scnhdr; | |
e98e6ec1 | 892 | { |
075caafd ILT |
893 | struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr; |
894 | unsigned int i; | |
895 | ||
896 | for (i = 0; i < 32; i++) | |
897 | if ((1 << i) >= hdr->s_align) | |
898 | break; | |
899 | section->alignment_power = i; | |
e98e6ec1 SC |
900 | } |
901 | ||
075caafd | 902 | #else /* ! I960 */ |
0f268757 | 903 | |
075caafd ILT |
904 | #define coff_set_alignment_hook \ |
905 | ((void (*) PARAMS ((bfd *, asection *, PTR))) bfd_void) | |
41f50af0 | 906 | |
075caafd | 907 | #endif /* ! I960 */ |
0f268757 | 908 | |
9783e04a | 909 | static boolean |
57a1867e DM |
910 | coff_mkobject (abfd) |
911 | bfd * abfd; | |
0f268757 | 912 | { |
075caafd ILT |
913 | coff_data_type *coff; |
914 | ||
9783e04a DM |
915 | abfd->tdata.coff_obj_data = (struct coff_tdata *) bfd_zalloc (abfd, sizeof (coff_data_type)); |
916 | if (abfd->tdata.coff_obj_data == 0) | |
917 | { | |
57a1867e | 918 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
919 | return false; |
920 | } | |
075caafd ILT |
921 | coff = coff_data (abfd); |
922 | coff->symbols = (coff_symbol_type *) NULL; | |
923 | coff->conversion_table = (unsigned int *) NULL; | |
924 | coff->raw_syments = (struct coff_ptr_struct *) NULL; | |
075caafd | 925 | coff->relocbase = 0; |
6590a8c9 | 926 | /* make_abs_section(abfd);*/ |
0f268757 SC |
927 | return true; |
928 | } | |
929 | ||
075caafd ILT |
930 | /* Create the COFF backend specific information. */ |
931 | ||
9783e04a | 932 | static PTR |
57a1867e DM |
933 | coff_mkobject_hook (abfd, filehdr, aouthdr) |
934 | bfd * abfd; | |
935 | PTR filehdr; | |
936 | PTR aouthdr; | |
0f268757 | 937 | { |
075caafd | 938 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; |
0f268757 | 939 | coff_data_type *coff; |
cbdc7909 | 940 | |
075caafd ILT |
941 | if (coff_mkobject (abfd) == false) |
942 | return NULL; | |
e98e6ec1 | 943 | |
075caafd | 944 | coff = coff_data (abfd); |
cbdc7909 | 945 | |
075caafd | 946 | coff->sym_filepos = internal_f->f_symptr; |
cbdc7909 | 947 | |
075caafd ILT |
948 | /* These members communicate important constants about the symbol |
949 | table to GDB's symbol-reading code. These `constants' | |
950 | unfortunately vary among coff implementations... */ | |
951 | coff->local_n_btmask = N_BTMASK; | |
952 | coff->local_n_btshft = N_BTSHFT; | |
9783e04a | 953 | coff->local_n_tmask = N_TMASK; |
075caafd | 954 | coff->local_n_tshift = N_TSHIFT; |
9783e04a DM |
955 | coff->local_symesz = SYMESZ; |
956 | coff->local_auxesz = AUXESZ; | |
957 | coff->local_linesz = LINESZ; | |
cbdc7909 | 958 | |
69645d10 ILT |
959 | obj_raw_syment_count (abfd) = |
960 | obj_conv_table_size (abfd) = | |
961 | internal_f->f_nsyms; | |
962 | ||
075caafd ILT |
963 | return (PTR) coff; |
964 | } | |
cbdc7909 | 965 | |
075caafd ILT |
966 | /* Determine the machine architecture and type. FIXME: This is target |
967 | dependent because the magic numbers are defined in the target | |
968 | dependent header files. But there is no particular need for this. | |
969 | If the magic numbers were moved to a separate file, this function | |
970 | would be target independent and would also be much more successful | |
971 | at linking together COFF files for different architectures. */ | |
cbdc7909 | 972 | |
075caafd | 973 | static boolean |
9783e04a | 974 | coff_set_arch_mach_hook (abfd, filehdr) |
4d09e8ac JK |
975 | bfd *abfd; |
976 | PTR filehdr; | |
075caafd ILT |
977 | { |
978 | long machine; | |
979 | enum bfd_architecture arch; | |
980 | struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr; | |
e98e6ec1 | 981 | |
075caafd | 982 | machine = 0; |
9783e04a DM |
983 | switch (internal_f->f_magic) |
984 | { | |
20fdc627 | 985 | #ifdef I386MAGIC |
9783e04a DM |
986 | case I386MAGIC: |
987 | case I386PTXMAGIC: | |
988 | case I386AIXMAGIC: /* Danbury PS/2 AIX C Compiler */ | |
989 | case LYNXCOFFMAGIC: /* shadows the m68k Lynx number below, sigh */ | |
990 | arch = bfd_arch_i386; | |
991 | machine = 0; | |
992 | break; | |
20fdc627 | 993 | #endif |
cbdc7909 JG |
994 | |
995 | #ifdef A29K_MAGIC_BIG | |
9783e04a DM |
996 | case A29K_MAGIC_BIG: |
997 | case A29K_MAGIC_LITTLE: | |
998 | arch = bfd_arch_a29k; | |
999 | machine = 0; | |
1000 | break; | |
41f50af0 | 1001 | #endif |
cbdc7909 | 1002 | |
0f268757 | 1003 | #ifdef MC68MAGIC |
9783e04a DM |
1004 | case MC68MAGIC: |
1005 | case M68MAGIC: | |
97eb2f0c | 1006 | #ifdef MC68KBCSMAGIC |
9783e04a | 1007 | case MC68KBCSMAGIC: |
97eb2f0c KR |
1008 | #endif |
1009 | #ifdef APOLLOM68KMAGIC | |
9783e04a | 1010 | case APOLLOM68KMAGIC: |
c188b0be DM |
1011 | #endif |
1012 | #ifdef LYNXCOFFMAGIC | |
9783e04a | 1013 | case LYNXCOFFMAGIC: |
97eb2f0c | 1014 | #endif |
9783e04a DM |
1015 | arch = bfd_arch_m68k; |
1016 | machine = 68020; | |
1017 | break; | |
0f268757 SC |
1018 | #endif |
1019 | #ifdef MC88MAGIC | |
9783e04a DM |
1020 | case MC88MAGIC: |
1021 | case MC88DMAGIC: | |
1022 | case MC88OMAGIC: | |
1023 | arch = bfd_arch_m88k; | |
1024 | machine = 88100; | |
1025 | break; | |
0f268757 | 1026 | #endif |
dc999ad9 | 1027 | #ifdef Z8KMAGIC |
9783e04a DM |
1028 | case Z8KMAGIC: |
1029 | arch = bfd_arch_z8k; | |
1030 | switch (internal_f->f_flags & F_MACHMASK) | |
1031 | { | |
1032 | case F_Z8001: | |
1033 | machine = bfd_mach_z8001; | |
1034 | break; | |
1035 | case F_Z8002: | |
1036 | machine = bfd_mach_z8002; | |
1037 | break; | |
1038 | default: | |
1039 | return false; | |
1040 | } | |
1041 | break; | |
dc999ad9 | 1042 | #endif |
0f268757 SC |
1043 | #ifdef I960 |
1044 | #ifdef I960ROMAGIC | |
9783e04a DM |
1045 | case I960ROMAGIC: |
1046 | case I960RWMAGIC: | |
1047 | arch = bfd_arch_i960; | |
1048 | switch (F_I960TYPE & internal_f->f_flags) | |
0f268757 SC |
1049 | { |
1050 | default: | |
1051 | case F_I960CORE: | |
0d740984 | 1052 | machine = bfd_mach_i960_core; |
0f268757 SC |
1053 | break; |
1054 | case F_I960KB: | |
0d740984 | 1055 | machine = bfd_mach_i960_kb_sb; |
0f268757 | 1056 | break; |
9783e04a | 1057 | case F_I960MC: |
0d740984 | 1058 | machine = bfd_mach_i960_mc; |
0f268757 SC |
1059 | break; |
1060 | case F_I960XA: | |
0d740984 | 1061 | machine = bfd_mach_i960_xa; |
0f268757 SC |
1062 | break; |
1063 | case F_I960CA: | |
0d740984 | 1064 | machine = bfd_mach_i960_ca; |
0f268757 SC |
1065 | break; |
1066 | case F_I960KA: | |
0d740984 | 1067 | machine = bfd_mach_i960_ka_sa; |
0f268757 | 1068 | break; |
b5b056fc KR |
1069 | /* start-sanitize-i960xl */ |
1070 | case F_I960XL: | |
1071 | machine = bfd_mach_i960_xl; | |
1072 | break; | |
1073 | /* end-sanitize-i960xl */ | |
0f268757 | 1074 | } |
9783e04a | 1075 | break; |
0f268757 SC |
1076 | #endif |
1077 | #endif | |
cbdc7909 JG |
1078 | |
1079 | #ifdef U802ROMAGIC | |
9783e04a DM |
1080 | case U802ROMAGIC: |
1081 | case U802WRMAGIC: | |
1082 | case U802TOCMAGIC: | |
1083 | arch = bfd_arch_rs6000; | |
1084 | machine = 6000; | |
1085 | break; | |
cbdc7909 JG |
1086 | #endif |
1087 | ||
dc999ad9 | 1088 | #ifdef WE32KMAGIC |
9783e04a DM |
1089 | case WE32KMAGIC: |
1090 | arch = bfd_arch_we32k; | |
1091 | machine = 0; | |
1092 | break; | |
dc999ad9 ILT |
1093 | #endif |
1094 | ||
3b4f1a5d | 1095 | #ifdef H8300MAGIC |
9783e04a DM |
1096 | case H8300MAGIC: |
1097 | arch = bfd_arch_h8300; | |
1098 | machine = bfd_mach_h8300; | |
1099 | /* !! FIXME this probably isn't the right place for this */ | |
1100 | abfd->flags |= BFD_IS_RELAXABLE; | |
1101 | break; | |
4d09e8ac JK |
1102 | #endif |
1103 | ||
1104 | #ifdef H8300HMAGIC | |
9783e04a DM |
1105 | case H8300HMAGIC: |
1106 | arch = bfd_arch_h8300; | |
1107 | machine = bfd_mach_h8300h; | |
1108 | /* !! FIXME this probably isn't the right place for this */ | |
1109 | abfd->flags |= BFD_IS_RELAXABLE; | |
1110 | break; | |
142ce43e SC |
1111 | #endif |
1112 | ||
f135c692 ILT |
1113 | #ifdef SH_ARCH_MAGIC_BIG |
1114 | case SH_ARCH_MAGIC_BIG: | |
1115 | case SH_ARCH_MAGIC_LITTLE: | |
9783e04a DM |
1116 | arch = bfd_arch_sh; |
1117 | machine = 0; | |
1118 | break; | |
9faacb92 SC |
1119 | #endif |
1120 | ||
142ce43e | 1121 | #ifdef H8500MAGIC |
9783e04a DM |
1122 | case H8500MAGIC: |
1123 | arch = bfd_arch_h8500; | |
1124 | machine = 0; | |
1125 | break; | |
3b4f1a5d | 1126 | #endif |
cbdc7909 | 1127 | |
c188b0be | 1128 | #ifdef SPARCMAGIC |
9783e04a | 1129 | case SPARCMAGIC: |
c16313f0 ILT |
1130 | #ifdef LYNXCOFFMAGIC |
1131 | case LYNXCOFFMAGIC: | |
1132 | #endif | |
9783e04a DM |
1133 | arch = bfd_arch_sparc; |
1134 | machine = 0; | |
1135 | break; | |
c188b0be DM |
1136 | #endif |
1137 | ||
9783e04a DM |
1138 | default: /* Unreadable input file type */ |
1139 | arch = bfd_arch_obscure; | |
1140 | break; | |
1141 | } | |
cbdc7909 | 1142 | |
9783e04a | 1143 | bfd_default_set_arch_mach (abfd, arch, machine); |
075caafd ILT |
1144 | return true; |
1145 | } | |
cbdc7909 | 1146 | |
075caafd | 1147 | #ifdef SYMNAME_IN_DEBUG |
6f715d66 | 1148 | |
075caafd | 1149 | static boolean |
57a1867e DM |
1150 | symname_in_debug_hook (abfd, sym) |
1151 | bfd * abfd; | |
1152 | struct internal_syment *sym; | |
075caafd ILT |
1153 | { |
1154 | return SYMNAME_IN_DEBUG (sym) ? true : false; | |
1155 | } | |
6f715d66 | 1156 | |
075caafd | 1157 | #else |
cbdc7909 | 1158 | |
075caafd ILT |
1159 | #define symname_in_debug_hook \ |
1160 | (boolean (*) PARAMS ((bfd *, struct internal_syment *))) bfd_false | |
cbdc7909 | 1161 | |
075caafd | 1162 | #endif |
7a8b18b6 | 1163 | |
9fda1a39 SC |
1164 | /* |
1165 | SUBSUBSECTION | |
c188b0be | 1166 | Writing relocations |
9fda1a39 | 1167 | |
c188b0be DM |
1168 | To write relocations, the back end steps though the |
1169 | canonical relocation table and create an | |
9fda1a39 | 1170 | @code{internal_reloc}. The symbol index to use is removed from |
c188b0be | 1171 | the @code{offset} field in the symbol table supplied. The |
9fda1a39 | 1172 | address comes directly from the sum of the section base |
c188b0be | 1173 | address and the relocation offset; the type is dug directly |
9fda1a39 SC |
1174 | from the howto field. Then the @code{internal_reloc} is |
1175 | swapped into the shape of an @code{external_reloc} and written | |
9783e04a | 1176 | out to disk. |
9fda1a39 | 1177 | |
6f715d66 | 1178 | */ |
0f268757 | 1179 | |
791a3db4 | 1180 | static boolean |
57a1867e DM |
1181 | coff_write_relocs (abfd) |
1182 | bfd * abfd; | |
6f715d66 | 1183 | { |
9783e04a DM |
1184 | asection *s; |
1185 | for (s = abfd->sections; s != (asection *) NULL; s = s->next) | |
1186 | { | |
1187 | unsigned int i; | |
1188 | struct external_reloc dst; | |
1189 | ||
1190 | arelent **p = s->orelocation; | |
791a3db4 ILT |
1191 | if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0) |
1192 | return false; | |
9783e04a DM |
1193 | for (i = 0; i < s->reloc_count; i++) |
1194 | { | |
1195 | struct internal_reloc n; | |
1196 | arelent *q = p[i]; | |
1197 | memset ((PTR) & n, 0, sizeof (n)); | |
1198 | ||
1199 | n.r_vaddr = q->address + s->vma; | |
1200 | ||
1201 | #ifdef R_IHCONST | |
1202 | /* The 29k const/consth reloc pair is a real kludge. The consth | |
cd83759c KR |
1203 | part doesn't have a symbol; it has an offset. So rebuilt |
1204 | that here. */ | |
9783e04a DM |
1205 | if (q->howto->type == R_IHCONST) |
1206 | n.r_symndx = q->addend; | |
1207 | else | |
780c477a | 1208 | #endif |
9783e04a DM |
1209 | if (q->sym_ptr_ptr) |
1210 | { | |
b5b056fc | 1211 | if (q->sym_ptr_ptr == bfd_abs_section_ptr->symbol_ptr_ptr) |
9783e04a DM |
1212 | /* This is a relocation relative to the absolute symbol. */ |
1213 | n.r_symndx = -1; | |
1214 | else | |
1215 | { | |
1216 | n.r_symndx = get_index ((*(q->sym_ptr_ptr))); | |
1217 | /* Take notice if the symbol reloc points to a symbol | |
cd83759c KR |
1218 | we don't have in our symbol table. What should we |
1219 | do for this?? */ | |
9783e04a DM |
1220 | if (n.r_symndx > obj_conv_table_size (abfd)) |
1221 | abort (); | |
1222 | } | |
1223 | } | |
780c477a | 1224 | |
cd83759c | 1225 | #ifdef SWAP_OUT_RELOC_OFFSET |
9783e04a | 1226 | n.r_offset = q->addend; |
cd83759c | 1227 | #endif |
c26d7d17 | 1228 | |
0f268757 | 1229 | #ifdef SELECT_RELOC |
9783e04a DM |
1230 | /* Work out reloc type from what is required */ |
1231 | SELECT_RELOC (n, q->howto); | |
0f268757 | 1232 | #else |
9783e04a | 1233 | n.r_type = q->howto->type; |
0f268757 | 1234 | #endif |
9783e04a | 1235 | coff_swap_reloc_out (abfd, &n, &dst); |
791a3db4 ILT |
1236 | if (bfd_write ((PTR) & dst, 1, RELSZ, abfd) != RELSZ) |
1237 | return false; | |
9783e04a | 1238 | } |
0f268757 | 1239 | } |
791a3db4 ILT |
1240 | |
1241 | return true; | |
6f715d66 | 1242 | } |
7a8b18b6 SC |
1243 | |
1244 | /* Set flags and magic number of a coff file from architecture and machine | |
1245 | type. Result is true if we can represent the arch&type, false if not. */ | |
0f268757 | 1246 | |
9783e04a | 1247 | static boolean |
57a1867e DM |
1248 | coff_set_flags (abfd, magicp, flagsp) |
1249 | bfd * abfd; | |
1250 | unsigned *magicp; | |
1251 | unsigned short *flagsp; | |
6f715d66 | 1252 | { |
9783e04a | 1253 | switch (bfd_get_arch (abfd)) |
dc999ad9 | 1254 | { |
9783e04a DM |
1255 | #ifdef Z8KMAGIC |
1256 | case bfd_arch_z8k: | |
1257 | *magicp = Z8KMAGIC; | |
1258 | switch (bfd_get_mach (abfd)) | |
1259 | { | |
1260 | case bfd_mach_z8001: | |
1261 | *flagsp = F_Z8001; | |
1262 | break; | |
1263 | case bfd_mach_z8002: | |
1264 | *flagsp = F_Z8002; | |
1265 | break; | |
1266 | default: | |
1267 | return false; | |
1268 | } | |
1269 | return true; | |
dc999ad9 | 1270 | #endif |
0f268757 | 1271 | #ifdef I960ROMAGIC |
cbdc7909 | 1272 | |
3b4f1a5d | 1273 | case bfd_arch_i960: |
cbdc7909 | 1274 | |
6f715d66 | 1275 | { |
9783e04a | 1276 | unsigned flags; |
6f715d66 SC |
1277 | *magicp = I960ROMAGIC; |
1278 | /* | |
1279 | ((bfd_get_file_flags(abfd) & WP_TEXT) ? I960ROMAGIC : | |
1280 | I960RWMAGIC); FIXME??? | |
1281 | */ | |
9783e04a DM |
1282 | switch (bfd_get_mach (abfd)) |
1283 | { | |
1284 | case bfd_mach_i960_core: | |
1285 | flags = F_I960CORE; | |
1286 | break; | |
1287 | case bfd_mach_i960_kb_sb: | |
1288 | flags = F_I960KB; | |
1289 | break; | |
1290 | case bfd_mach_i960_mc: | |
1291 | flags = F_I960MC; | |
1292 | break; | |
1293 | case bfd_mach_i960_xa: | |
1294 | flags = F_I960XA; | |
1295 | break; | |
1296 | case bfd_mach_i960_ca: | |
1297 | flags = F_I960CA; | |
1298 | break; | |
1299 | case bfd_mach_i960_ka_sa: | |
1300 | flags = F_I960KA; | |
1301 | break; | |
b5b056fc KR |
1302 | /* start-sanitize-i960xl */ |
1303 | case bfd_mach_i960_xl: | |
1304 | flags = F_I960XL; | |
1305 | break; | |
1306 | /* end-sanitize-i960xl */ | |
9783e04a DM |
1307 | default: |
1308 | return false; | |
1309 | } | |
6f715d66 SC |
1310 | *flagsp = flags; |
1311 | return true; | |
1312 | } | |
9783e04a | 1313 | break; |
0f268757 | 1314 | #endif |
20fdc627 | 1315 | #ifdef I386MAGIC |
9783e04a DM |
1316 | case bfd_arch_i386: |
1317 | *magicp = I386MAGIC; | |
c188b0be | 1318 | #ifdef LYNXOS |
9783e04a DM |
1319 | /* Just overwrite the usual value if we're doing Lynx. */ |
1320 | *magicp = LYNXCOFFMAGIC; | |
c188b0be | 1321 | #endif |
9783e04a DM |
1322 | return true; |
1323 | break; | |
20fdc627 | 1324 | #endif |
0f268757 | 1325 | #ifdef MC68MAGIC |
9783e04a | 1326 | case bfd_arch_m68k: |
97eb2f0c | 1327 | #ifdef APOLLOM68KMAGIC |
9783e04a | 1328 | *magicp = APOLLO_COFF_VERSION_NUMBER; |
97eb2f0c | 1329 | #else |
9783e04a | 1330 | *magicp = MC68MAGIC; |
c188b0be DM |
1331 | #endif |
1332 | #ifdef LYNXOS | |
9783e04a DM |
1333 | /* Just overwrite the usual value if we're doing Lynx. */ |
1334 | *magicp = LYNXCOFFMAGIC; | |
97eb2f0c | 1335 | #endif |
9783e04a DM |
1336 | return true; |
1337 | break; | |
0f268757 | 1338 | #endif |
cbdc7909 | 1339 | |
0f268757 | 1340 | #ifdef MC88MAGIC |
3b4f1a5d SC |
1341 | case bfd_arch_m88k: |
1342 | *magicp = MC88OMAGIC; | |
1343 | return true; | |
1344 | break; | |
1345 | #endif | |
1346 | #ifdef H8300MAGIC | |
1347 | case bfd_arch_h8300: | |
9783e04a DM |
1348 | switch (bfd_get_mach (abfd)) |
1349 | { | |
1350 | case bfd_mach_h8300: | |
1351 | *magicp = H8300MAGIC; | |
1352 | return true; | |
1353 | case bfd_mach_h8300h: | |
1354 | *magicp = H8300HMAGIC; | |
1355 | return true; | |
1356 | } | |
3b4f1a5d | 1357 | break; |
0f268757 | 1358 | #endif |
9faacb92 | 1359 | |
f135c692 | 1360 | #ifdef SH_ARCH_MAGIC_BIG |
9783e04a | 1361 | case bfd_arch_sh: |
f135c692 ILT |
1362 | if (abfd->xvec->byteorder_big_p) |
1363 | *magicp = SH_ARCH_MAGIC_BIG; | |
1364 | else | |
1365 | *magicp = SH_ARCH_MAGIC_LITTLE; | |
9faacb92 SC |
1366 | return true; |
1367 | break; | |
1368 | #endif | |
1369 | ||
c188b0be | 1370 | #ifdef SPARCMAGIC |
9783e04a DM |
1371 | case bfd_arch_sparc: |
1372 | *magicp = SPARCMAGIC; | |
c188b0be | 1373 | #ifdef LYNXOS |
9783e04a DM |
1374 | /* Just overwrite the usual value if we're doing Lynx. */ |
1375 | *magicp = LYNXCOFFMAGIC; | |
c188b0be | 1376 | #endif |
9783e04a DM |
1377 | return true; |
1378 | break; | |
c188b0be DM |
1379 | #endif |
1380 | ||
142ce43e SC |
1381 | #ifdef H8500MAGIC |
1382 | case bfd_arch_h8500: | |
1383 | *magicp = H8500MAGIC; | |
1384 | return true; | |
1385 | break; | |
1386 | #endif | |
41f50af0 | 1387 | #ifdef A29K_MAGIC_BIG |
3b4f1a5d SC |
1388 | case bfd_arch_a29k: |
1389 | if (abfd->xvec->byteorder_big_p) | |
9783e04a | 1390 | *magicp = A29K_MAGIC_BIG; |
3b4f1a5d | 1391 | else |
9783e04a | 1392 | *magicp = A29K_MAGIC_LITTLE; |
3b4f1a5d SC |
1393 | return true; |
1394 | break; | |
41f50af0 | 1395 | #endif |
cbdc7909 | 1396 | |
dc999ad9 | 1397 | #ifdef WE32KMAGIC |
9783e04a DM |
1398 | case bfd_arch_we32k: |
1399 | *magicp = WE32KMAGIC; | |
1400 | return true; | |
1401 | break; | |
dc999ad9 ILT |
1402 | #endif |
1403 | ||
cbdc7909 | 1404 | #ifdef U802TOCMAGIC |
9783e04a | 1405 | case bfd_arch_rs6000: |
09a28207 | 1406 | case bfd_arch_powerpc: |
9783e04a DM |
1407 | *magicp = U802TOCMAGIC; |
1408 | return true; | |
1409 | break; | |
cbdc7909 JG |
1410 | #endif |
1411 | ||
9783e04a DM |
1412 | default: /* Unknown architecture */ |
1413 | /* return false; -- fall through to "return false" below, to avoid | |
cbdc7909 | 1414 | "statement never reached" errors on the one below. */ |
9783e04a DM |
1415 | break; |
1416 | } | |
cbdc7909 | 1417 | |
6f715d66 SC |
1418 | return false; |
1419 | } | |
0f268757 SC |
1420 | |
1421 | ||
9783e04a | 1422 | static boolean |
57a1867e DM |
1423 | coff_set_arch_mach (abfd, arch, machine) |
1424 | bfd * abfd; | |
1425 | enum bfd_architecture arch; | |
1426 | unsigned long machine; | |
6f715d66 | 1427 | { |
9783e04a DM |
1428 | unsigned dummy1; |
1429 | unsigned short dummy2; | |
c16313f0 ILT |
1430 | |
1431 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) | |
1432 | return false; | |
0d740984 SC |
1433 | |
1434 | if (arch != bfd_arch_unknown && | |
9783e04a | 1435 | coff_set_flags (abfd, &dummy1, &dummy2) != true) |
0d740984 | 1436 | return false; /* We can't represent this type */ |
c16313f0 | 1437 | |
0d740984 SC |
1438 | return true; /* We're easy ... */ |
1439 | } | |
0f268757 SC |
1440 | |
1441 | ||
1442 | /* Calculate the file position for each section. */ | |
1443 | ||
cbdc7909 | 1444 | static void |
57a1867e DM |
1445 | coff_compute_section_file_positions (abfd) |
1446 | bfd * abfd; | |
6f715d66 | 1447 | { |
9783e04a DM |
1448 | asection *current; |
1449 | asection *previous = (asection *) NULL; | |
1450 | file_ptr sofar = FILHSZ; | |
55c95b04 | 1451 | #ifndef I960 |
9783e04a | 1452 | file_ptr old_sofar; |
55c95b04 | 1453 | #endif |
69645d10 ILT |
1454 | unsigned int count; |
1455 | ||
9783e04a DM |
1456 | if (bfd_get_start_address (abfd)) |
1457 | { | |
1458 | /* A start address may have been added to the original file. In this | |
e98e6ec1 | 1459 | case it will need an optional header to record it. */ |
9783e04a DM |
1460 | abfd->flags |= EXEC_P; |
1461 | } | |
85e0c721 | 1462 | |
e98e6ec1 | 1463 | if (abfd->flags & EXEC_P) |
9783e04a | 1464 | sofar += AOUTSZ; |
cbdc7909 | 1465 | |
e98e6ec1 | 1466 | sofar += abfd->section_count * SCNHSZ; |
69645d10 | 1467 | for (current = abfd->sections, count = 1; |
9783e04a | 1468 | current != (asection *) NULL; |
69645d10 | 1469 | current = current->next, ++count) |
9783e04a | 1470 | { |
69645d10 | 1471 | current->target_index = count; |
cbdc7909 | 1472 | |
e98e6ec1 SC |
1473 | /* Only deal with sections which have contents */ |
1474 | if (!(current->flags & SEC_HAS_CONTENTS)) | |
9783e04a | 1475 | continue; |
cbdc7909 | 1476 | |
e98e6ec1 SC |
1477 | /* Align the sections in the file to the same boundary on |
1478 | which they are aligned in virtual memory. I960 doesn't | |
1479 | do this (FIXME) so we can stay in sync with Intel. 960 | |
1480 | doesn't yet page from files... */ | |
0f268757 | 1481 | #ifndef I960 |
9783e04a DM |
1482 | { |
1483 | /* make sure this section is aligned on the right boundary - by | |
e98e6ec1 SC |
1484 | padding the previous section up if necessary */ |
1485 | ||
9783e04a DM |
1486 | old_sofar = sofar; |
1487 | sofar = BFD_ALIGN (sofar, 1 << current->alignment_power); | |
1488 | if (previous != (asection *) NULL) | |
1489 | { | |
1490 | previous->_raw_size += sofar - old_sofar; | |
1491 | } | |
1492 | } | |
85e0c721 | 1493 | |
0f268757 | 1494 | #endif |
b5b056fc KR |
1495 | |
1496 | #ifdef COFF_PAGE_SIZE | |
1497 | /* In demand paged files the low order bits of the file offset | |
1498 | must match the low order bits of the virtual address. */ | |
e8fbe6d9 ILT |
1499 | if ((abfd->flags & D_PAGED) != 0 |
1500 | && (current->flags & SEC_ALLOC) != 0) | |
b5b056fc KR |
1501 | sofar += (current->vma - sofar) % COFF_PAGE_SIZE; |
1502 | #endif | |
cbdc7909 | 1503 | |
e98e6ec1 | 1504 | current->filepos = sofar; |
85e0c721 | 1505 | |
5e167886 KR |
1506 | sofar += current->_raw_size; |
1507 | #ifndef I960 | |
e98e6ec1 | 1508 | /* make sure that this section is of the right size too */ |
9783e04a DM |
1509 | old_sofar = sofar; |
1510 | sofar = BFD_ALIGN (sofar, 1 << current->alignment_power); | |
1511 | current->_raw_size += sofar - old_sofar; | |
5e167886 | 1512 | #endif |
85e0c721 | 1513 | |
35d835c4 JK |
1514 | #ifdef _LIB |
1515 | /* Force .lib sections to start at zero. The vma is then | |
1516 | incremented in coff_set_section_contents. This is right for | |
1517 | SVR3.2. */ | |
1518 | if (strcmp (current->name, _LIB) == 0) | |
1519 | bfd_set_section_vma (abfd, current, 0); | |
1520 | #endif | |
1521 | ||
e98e6ec1 | 1522 | previous = current; |
85e0c721 | 1523 | } |
9783e04a | 1524 | obj_relocbase (abfd) = sofar; |
69645d10 | 1525 | abfd->output_has_begun = true; |
6f715d66 | 1526 | } |
0f268757 | 1527 | |
9783e04a DM |
1528 | #ifndef RS6000COFF_C |
1529 | ||
8070f29d KR |
1530 | /* If .file, .text, .data, .bss symbols are missing, add them. */ |
1531 | /* @@ Should we only be adding missing symbols, or overriding the aux | |
1532 | values for existing section symbols? */ | |
9783e04a | 1533 | static boolean |
8070f29d KR |
1534 | coff_add_missing_symbols (abfd) |
1535 | bfd *abfd; | |
1536 | { | |
1537 | unsigned int nsyms = bfd_get_symcount (abfd); | |
1538 | asymbol **sympp = abfd->outsymbols; | |
1539 | asymbol **sympp2; | |
1540 | unsigned int i; | |
1541 | int need_text = 1, need_data = 1, need_bss = 1, need_file = 1; | |
0f268757 | 1542 | |
8070f29d KR |
1543 | for (i = 0; i < nsyms; i++) |
1544 | { | |
1545 | coff_symbol_type *csym = coff_symbol_from (abfd, sympp[i]); | |
1546 | CONST char *name; | |
9783e04a | 1547 | if (csym) |
8070f29d | 1548 | { |
9783e04a DM |
1549 | /* only do this if there is a coff representation of the input |
1550 | symbol */ | |
1551 | if (csym->native && csym->native->u.syment.n_sclass == C_FILE) | |
1552 | { | |
1553 | need_file = 0; | |
1554 | continue; | |
1555 | } | |
1556 | name = csym->symbol.name; | |
1557 | if (!name) | |
1558 | continue; | |
1559 | if (!strcmp (name, _TEXT)) | |
1560 | need_text = 0; | |
97eb2f0c | 1561 | #ifdef APOLLO_M68 |
9783e04a DM |
1562 | else if (!strcmp (name, ".wtext")) |
1563 | need_text = 0; | |
97eb2f0c | 1564 | #endif |
9783e04a DM |
1565 | else if (!strcmp (name, _DATA)) |
1566 | need_data = 0; | |
1567 | else if (!strcmp (name, _BSS)) | |
1568 | need_bss = 0; | |
1569 | } | |
8070f29d KR |
1570 | } |
1571 | /* Now i == bfd_get_symcount (abfd). */ | |
1572 | /* @@ For now, don't deal with .file symbol. */ | |
1573 | need_file = 0; | |
1574 | ||
1575 | if (!need_text && !need_data && !need_bss && !need_file) | |
9783e04a | 1576 | return true; |
8070f29d | 1577 | nsyms += need_text + need_data + need_bss + need_file; |
9783e04a DM |
1578 | sympp2 = (asymbol **) bfd_alloc_by_size_t (abfd, nsyms * sizeof (asymbol *)); |
1579 | if (!sympp2) | |
1580 | { | |
57a1867e | 1581 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
1582 | return false; |
1583 | } | |
8070f29d KR |
1584 | memcpy (sympp2, sympp, i * sizeof (asymbol *)); |
1585 | if (need_file) | |
1586 | { | |
1587 | /* @@ Generate fake .file symbol, in sympp2[i], and increment i. */ | |
1588 | abort (); | |
1589 | } | |
1590 | if (need_text) | |
1591 | sympp2[i++] = coff_section_symbol (abfd, _TEXT); | |
1592 | if (need_data) | |
1593 | sympp2[i++] = coff_section_symbol (abfd, _DATA); | |
1594 | if (need_bss) | |
1595 | sympp2[i++] = coff_section_symbol (abfd, _BSS); | |
9465d03e | 1596 | BFD_ASSERT (i == nsyms); |
8070f29d | 1597 | bfd_set_symtab (abfd, sympp2, nsyms); |
9783e04a | 1598 | return true; |
8070f29d | 1599 | } |
0f268757 | 1600 | |
9783e04a DM |
1601 | #endif /* ! defined (RS6000COFF_C) */ |
1602 | ||
0f268757 SC |
1603 | /* SUPPRESS 558 */ |
1604 | /* SUPPRESS 529 */ | |
9783e04a | 1605 | static boolean |
57a1867e DM |
1606 | coff_write_object_contents (abfd) |
1607 | bfd * abfd; | |
e98e6ec1 | 1608 | { |
9783e04a | 1609 | asection *current; |
9783e04a DM |
1610 | boolean hasrelocs = false; |
1611 | boolean haslinno = false; | |
1612 | file_ptr reloc_base; | |
1613 | file_ptr lineno_base; | |
1614 | file_ptr sym_base; | |
9783e04a DM |
1615 | unsigned long reloc_size = 0; |
1616 | unsigned long lnno_size = 0; | |
1617 | asection *text_sec = NULL; | |
1618 | asection *data_sec = NULL; | |
1619 | asection *bss_sec = NULL; | |
cbdc7909 | 1620 | |
e98e6ec1 SC |
1621 | struct internal_filehdr internal_f; |
1622 | struct internal_aouthdr internal_a; | |
cbdc7909 | 1623 | |
cbdc7909 | 1624 | |
57a1867e | 1625 | bfd_set_error (bfd_error_system_call); |
6590a8c9 | 1626 | |
9783e04a | 1627 | if (abfd->output_has_begun == false) |
69645d10 | 1628 | coff_compute_section_file_positions (abfd); |
cbdc7909 | 1629 | |
9783e04a | 1630 | reloc_base = obj_relocbase (abfd); |
cbdc7909 | 1631 | |
0f268757 SC |
1632 | /* Make a pass through the symbol table to count line number entries and |
1633 | put them into the correct asections */ | |
cbdc7909 | 1634 | |
9783e04a | 1635 | lnno_size = coff_count_linenumbers (abfd) * LINESZ; |
cbdc7909 | 1636 | |
0f268757 | 1637 | /* Work out the size of the reloc and linno areas */ |
cbdc7909 | 1638 | |
e98e6ec1 | 1639 | for (current = abfd->sections; current != NULL; current = |
9783e04a | 1640 | current->next) |
69645d10 | 1641 | reloc_size += current->reloc_count * RELSZ; |
cbdc7909 | 1642 | |
0f268757 SC |
1643 | lineno_base = reloc_base + reloc_size; |
1644 | sym_base = lineno_base + lnno_size; | |
cbdc7909 | 1645 | |
0f268757 | 1646 | /* Indicate in each section->line_filepos its actual file address */ |
e98e6ec1 | 1647 | for (current = abfd->sections; current != NULL; current = |
9783e04a | 1648 | current->next) |
e98e6ec1 | 1649 | { |
69645d10 | 1650 | if (current->lineno_count) |
9783e04a | 1651 | { |
69645d10 ILT |
1652 | current->line_filepos = lineno_base; |
1653 | current->moving_line_filepos = lineno_base; | |
1654 | lineno_base += current->lineno_count * LINESZ; | |
1655 | } | |
1656 | else | |
1657 | { | |
1658 | current->line_filepos = 0; | |
1659 | } | |
1660 | if (current->reloc_count) | |
1661 | { | |
1662 | current->rel_filepos = reloc_base; | |
1663 | reloc_base += current->reloc_count * RELSZ; | |
1664 | } | |
1665 | else | |
1666 | { | |
1667 | current->rel_filepos = 0; | |
e98e6ec1 | 1668 | } |
0f268757 | 1669 | } |
9783e04a | 1670 | |
e98e6ec1 SC |
1671 | /* Write section headers to the file. */ |
1672 | internal_f.f_nscns = 0; | |
791a3db4 ILT |
1673 | if (bfd_seek (abfd, |
1674 | (file_ptr) ((abfd->flags & EXEC_P) ? | |
1675 | (FILHSZ + AOUTSZ) : FILHSZ), | |
1676 | SEEK_SET) | |
1677 | != 0) | |
1678 | return false; | |
cbdc7909 | 1679 | |
9783e04a | 1680 | { |
9783e04a DM |
1681 | for (current = abfd->sections; |
1682 | current != NULL; | |
1683 | current = current->next) | |
e98e6ec1 | 1684 | { |
9783e04a | 1685 | struct internal_scnhdr section; |
69645d10 ILT |
1686 | |
1687 | internal_f.f_nscns++; | |
1688 | strncpy (&(section.s_name[0]), current->name, 8); | |
b26059aa | 1689 | #ifdef _LIB |
69645d10 | 1690 | /* Always set s_vaddr of .lib to 0. This is right for SVR3.2 |
b26059aa | 1691 | Ian Taylor <ian@cygnus.com>. */ |
69645d10 ILT |
1692 | if (strcmp (current->name, _LIB) == 0) |
1693 | section.s_vaddr = 0; | |
1694 | else | |
1695 | #endif | |
1696 | section.s_vaddr = current->lma; | |
1697 | section.s_paddr = current->lma; | |
1698 | section.s_size = current->_raw_size; | |
1699 | /* | |
1700 | If this section has no size or is unloadable then the scnptr | |
1701 | will be 0 too | |
1702 | */ | |
1703 | if (current->_raw_size == 0 || | |
1704 | (current->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0) | |
1705 | { | |
1706 | section.s_scnptr = 0; | |
1707 | } | |
1708 | else | |
1709 | { | |
1710 | section.s_scnptr = current->filepos; | |
1711 | } | |
1712 | section.s_relptr = current->rel_filepos; | |
1713 | section.s_lnnoptr = current->line_filepos; | |
1714 | section.s_nreloc = current->reloc_count; | |
1715 | section.s_nlnno = current->lineno_count; | |
1716 | if (current->reloc_count != 0) | |
1717 | hasrelocs = true; | |
1718 | if (current->lineno_count != 0) | |
1719 | haslinno = true; | |
1720 | ||
1721 | section.s_flags = sec_to_styp_flags (current->name, current->flags); | |
1722 | ||
1723 | if (!strcmp (current->name, _TEXT)) | |
1724 | { | |
1725 | text_sec = current; | |
1726 | } | |
1727 | else if (!strcmp (current->name, _DATA)) | |
1728 | { | |
1729 | data_sec = current; | |
b26059aa | 1730 | #ifdef TWO_DATA_SECS |
69645d10 ILT |
1731 | } |
1732 | else if (!strcmp (current->name, ".data2")) | |
1733 | { | |
1734 | data_sec = current; | |
b26059aa | 1735 | #endif /* TWO_DATA_SECS */ |
69645d10 ILT |
1736 | } |
1737 | else if (!strcmp (current->name, _BSS)) | |
1738 | { | |
1739 | bss_sec = current; | |
1740 | } | |
cbdc7909 | 1741 | |
0f268757 | 1742 | #ifdef I960 |
69645d10 ILT |
1743 | section.s_align = (current->alignment_power |
1744 | ? 1 << current->alignment_power | |
1745 | : 0); | |
0f268757 SC |
1746 | |
1747 | #endif | |
69645d10 ILT |
1748 | { |
1749 | SCNHDR buff; | |
e98e6ec1 | 1750 | |
69645d10 ILT |
1751 | coff_swap_scnhdr_out (abfd, §ion, &buff); |
1752 | if (bfd_write ((PTR) (&buff), 1, SCNHSZ, abfd) != SCNHSZ) | |
1753 | return false; | |
0f268757 | 1754 | |
69645d10 | 1755 | } |
0f268757 | 1756 | } |
9783e04a | 1757 | } |
e98e6ec1 | 1758 | |
0f268757 SC |
1759 | |
1760 | /* OK, now set up the filehdr... */ | |
e98e6ec1 SC |
1761 | |
1762 | /* Don't include the internal abs section in the section count */ | |
1763 | ||
0f268757 SC |
1764 | /* |
1765 | We will NOT put a fucking timestamp in the header here. Every time you | |
17f9c817 | 1766 | put it back, I will come in and take it out again. I'm sorry. This |
0f268757 SC |
1767 | field does not belong here. We fill it with a 0 so it compares the |
1768 | same but is not a reasonable time. -- gnu@cygnus.com | |
1769 | */ | |
0f268757 | 1770 | internal_f.f_timdat = 0; |
0f268757 | 1771 | |
0f268757 SC |
1772 | internal_f.f_flags = 0; |
1773 | ||
1774 | if (abfd->flags & EXEC_P) | |
9783e04a | 1775 | internal_f.f_opthdr = AOUTSZ; |
0f268757 | 1776 | else |
9783e04a | 1777 | internal_f.f_opthdr = 0; |
0f268757 SC |
1778 | |
1779 | if (!hasrelocs) | |
9783e04a | 1780 | internal_f.f_flags |= F_RELFLG; |
0f268757 | 1781 | if (!haslinno) |
9783e04a | 1782 | internal_f.f_flags |= F_LNNO; |
0f268757 | 1783 | if (abfd->flags & EXEC_P) |
9783e04a | 1784 | internal_f.f_flags |= F_EXEC; |
a0f3f080 | 1785 | |
0f268757 | 1786 | if (!abfd->xvec->byteorder_big_p) |
9783e04a DM |
1787 | internal_f.f_flags |= F_AR32WR; |
1788 | else | |
1789 | internal_f.f_flags |= F_AR32W; | |
a0f3f080 | 1790 | |
0f268757 SC |
1791 | /* |
1792 | FIXME, should do something about the other byte orders and | |
1793 | architectures. | |
1794 | */ | |
1795 | ||
ab31ae53 KR |
1796 | memset (&internal_a, 0, sizeof internal_a); |
1797 | ||
0f268757 SC |
1798 | /* Set up architecture-dependent stuff */ |
1799 | ||
9783e04a DM |
1800 | { |
1801 | unsigned int magic = 0; | |
1802 | unsigned short flags = 0; | |
1803 | coff_set_flags (abfd, &magic, &flags); | |
1804 | internal_f.f_magic = magic; | |
1805 | internal_f.f_flags |= flags; | |
1806 | /* ...and the "opt"hdr... */ | |
0f268757 | 1807 | |
cbdc7909 | 1808 | #ifdef A29K |
9783e04a DM |
1809 | #ifdef ULTRA3 /* NYU's machine */ |
1810 | /* FIXME: This is a bogus check. I really want to see if there | |
e98e6ec1 SC |
1811 | * is a .shbss or a .shdata section, if so then set the magic |
1812 | * number to indicate a shared data executable. | |
1813 | */ | |
9783e04a DM |
1814 | if (internal_f.f_nscns >= 7) |
1815 | internal_a.magic = SHMAGIC; /* Shared magic */ | |
1816 | else | |
1817 | #endif /* ULTRA3 */ | |
1818 | internal_a.magic = NMAGIC;/* Assume separate i/d */ | |
41f50af0 | 1819 | #define __A_MAGIC_SET__ |
9783e04a | 1820 | #endif /* A29K */ |
0f268757 | 1821 | #ifdef I960 |
9783e04a | 1822 | internal_a.magic = (magic == I960ROMAGIC ? NMAGIC : OMAGIC); |
41f50af0 | 1823 | #define __A_MAGIC_SET__ |
9783e04a | 1824 | #endif /* I960 */ |
0f268757 | 1825 | #if M88 |
41f50af0 | 1826 | #define __A_MAGIC_SET__ |
9783e04a DM |
1827 | internal_a.magic = PAGEMAGICBCS; |
1828 | #endif /* M88 */ | |
41f50af0 | 1829 | |
97eb2f0c KR |
1830 | #if APOLLO_M68 |
1831 | #define __A_MAGIC_SET__ | |
9783e04a | 1832 | internal_a.magic = APOLLO_COFF_VERSION_NUMBER; |
97eb2f0c KR |
1833 | #endif |
1834 | ||
e8fbe6d9 | 1835 | #if defined(M68) || defined(WE32K) || defined(M68K) |
41f50af0 | 1836 | #define __A_MAGIC_SET__ |
e8fbe6d9 ILT |
1837 | #if defined(LYNXOS) |
1838 | internal_a.magic = LYNXCOFFMAGIC; | |
1839 | #endif /* LYNXOS */ | |
1840 | #endif /* M68 || WE32K || M68K */ | |
8ad2a31d | 1841 | |
e8fbe6d9 | 1842 | #if defined(I386) |
9783e04a | 1843 | #define __A_MAGIC_SET__ |
e8fbe6d9 ILT |
1844 | #if defined(LYNXOS) |
1845 | internal_a.magic = LYNXCOFFMAGIC; | |
1846 | #else /* LYNXOS */ | |
9783e04a | 1847 | internal_a.magic = ZMAGIC; |
e8fbe6d9 | 1848 | #endif /* LYNXOS */ |
8ad2a31d | 1849 | #endif /* I386 */ |
41f50af0 | 1850 | |
e8fbe6d9 ILT |
1851 | #if defined(SPARC) |
1852 | #define __A_MAGIC_SET__ | |
1853 | #if defined(LYNXOS) | |
1854 | internal_a.magic = LYNXCOFFMAGIC; | |
1855 | #endif /* LYNXOS */ | |
1856 | #endif /* SPARC */ | |
1857 | ||
cbdc7909 JG |
1858 | #if RS6000COFF_C |
1859 | #define __A_MAGIC_SET__ | |
9783e04a DM |
1860 | internal_a.magic = (abfd->flags & D_PAGED) ? RS6K_AOUTHDR_ZMAGIC : |
1861 | (abfd->flags & WP_TEXT) ? RS6K_AOUTHDR_NMAGIC : | |
1862 | RS6K_AOUTHDR_OMAGIC; | |
cbdc7909 JG |
1863 | #endif |
1864 | ||
41f50af0 | 1865 | #ifndef __A_MAGIC_SET__ |
9783e04a | 1866 | #include "Your aouthdr magic number is not being set!" |
41f50af0 | 1867 | #else |
9783e04a | 1868 | #undef __A_MAGIC_SET__ |
0f268757 | 1869 | #endif |
9783e04a | 1870 | } |
0f268757 | 1871 | /* Now should write relocs, strings, syms */ |
9783e04a DM |
1872 | obj_sym_filepos (abfd) = sym_base; |
1873 | ||
1874 | if (bfd_get_symcount (abfd) != 0) | |
1875 | { | |
1876 | #ifndef RS6000COFF_C | |
1877 | if (!coff_add_missing_symbols (abfd)) | |
1878 | return false; | |
1879 | #endif | |
1880 | if (!coff_renumber_symbols (abfd)) | |
1881 | return false; | |
1882 | coff_mangle_symbols (abfd); | |
bfe8224f ILT |
1883 | if (! coff_write_symbols (abfd)) |
1884 | return false; | |
791a3db4 ILT |
1885 | if (! coff_write_linenumbers (abfd)) |
1886 | return false; | |
1887 | if (! coff_write_relocs (abfd)) | |
9783e04a | 1888 | return false; |
e98e6ec1 | 1889 | } |
6ceff8e7 ILT |
1890 | |
1891 | /* If bfd_get_symcount (abfd) != 0, then we are not using the COFF | |
1892 | backend linker, and obj_raw_syment_count is not valid until after | |
1893 | coff_write_symbols is called. */ | |
1894 | if (obj_raw_syment_count (abfd) != 0) | |
1895 | internal_f.f_symptr = sym_base; | |
1896 | else | |
1897 | { | |
1898 | internal_f.f_symptr = 0; | |
1899 | internal_f.f_flags |= F_LSYMS; | |
1900 | } | |
1901 | ||
9783e04a DM |
1902 | if (text_sec) |
1903 | { | |
1904 | internal_a.tsize = bfd_get_section_size_before_reloc (text_sec); | |
e98e6ec1 SC |
1905 | internal_a.text_start = internal_a.tsize ? text_sec->vma : 0; |
1906 | } | |
9783e04a DM |
1907 | if (data_sec) |
1908 | { | |
1909 | internal_a.dsize = bfd_get_section_size_before_reloc (data_sec); | |
1910 | internal_a.data_start = internal_a.dsize ? data_sec->vma : 0; | |
e98e6ec1 | 1911 | } |
9783e04a DM |
1912 | if (bss_sec) |
1913 | { | |
1914 | internal_a.bsize = bfd_get_section_size_before_reloc (bss_sec); | |
e98e6ec1 | 1915 | } |
0f268757 | 1916 | |
9783e04a | 1917 | internal_a.entry = bfd_get_start_address (abfd); |
69645d10 | 1918 | internal_f.f_nsyms = obj_raw_syment_count (abfd); |
0f268757 SC |
1919 | |
1920 | /* now write them */ | |
9783e04a DM |
1921 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
1922 | return false; | |
1923 | { | |
1924 | FILHDR buff; | |
1925 | coff_swap_filehdr_out (abfd, (PTR) & internal_f, (PTR) & buff); | |
791a3db4 ILT |
1926 | if (bfd_write ((PTR) & buff, 1, FILHSZ, abfd) != FILHSZ) |
1927 | return false; | |
9783e04a DM |
1928 | } |
1929 | if (abfd->flags & EXEC_P) | |
1930 | { | |
e98e6ec1 | 1931 | AOUTHDR buff; |
9783e04a | 1932 | coff_swap_aouthdr_out (abfd, (PTR) & internal_a, (PTR) & buff); |
791a3db4 ILT |
1933 | if (bfd_write ((PTR) & buff, 1, AOUTSZ, abfd) != AOUTSZ) |
1934 | return false; | |
e98e6ec1 | 1935 | } |
0f268757 | 1936 | return true; |
6f715d66 SC |
1937 | } |
1938 | ||
9783e04a | 1939 | static boolean |
57a1867e DM |
1940 | coff_set_section_contents (abfd, section, location, offset, count) |
1941 | bfd * abfd; | |
1942 | sec_ptr section; | |
1943 | PTR location; | |
1944 | file_ptr offset; | |
1945 | bfd_size_type count; | |
0f268757 | 1946 | { |
9783e04a DM |
1947 | if (abfd->output_has_begun == false) /* set by bfd.c handler */ |
1948 | coff_compute_section_file_positions (abfd); | |
cbdc7909 | 1949 | |
075caafd | 1950 | #ifdef _LIB |
9783e04a | 1951 | /* If this is a .lib section, bump the vma address so that it |
075caafd ILT |
1952 | winds up being the number of .lib sections output. This is |
1953 | right for SVR3.2. Shared libraries should probably get more | |
1954 | generic support. Ian Taylor <ian@cygnus.com>. */ | |
9783e04a DM |
1955 | if (strcmp (section->name, _LIB) == 0) |
1956 | ++section->lma; | |
075caafd | 1957 | #endif |
0f268757 | 1958 | |
9783e04a DM |
1959 | /* Don't write out bss sections - one way to do this is to |
1960 | see if the filepos has not been set. */ | |
1961 | if (section->filepos == 0) | |
1962 | return true; | |
55c95b04 | 1963 | |
791a3db4 ILT |
1964 | if (bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0) |
1965 | return false; | |
7a8b18b6 | 1966 | |
9783e04a DM |
1967 | if (count != 0) |
1968 | { | |
1969 | return (bfd_write (location, 1, count, abfd) == count) ? true : false; | |
075caafd | 1970 | } |
9783e04a | 1971 | return true; |
075caafd ILT |
1972 | } |
1973 | #if 0 | |
9783e04a DM |
1974 | static boolean |
1975 | coff_close_and_cleanup (abfd) | |
1976 | bfd *abfd; | |
0f268757 | 1977 | { |
9783e04a DM |
1978 | if (!bfd_read_p (abfd)) |
1979 | switch (abfd->format) | |
1980 | { | |
1981 | case bfd_archive: | |
1982 | if (!_bfd_write_archive_contents (abfd)) | |
1983 | return false; | |
1984 | break; | |
1985 | case bfd_object: | |
1986 | if (!coff_write_object_contents (abfd)) | |
1987 | return false; | |
1988 | break; | |
1989 | default: | |
57a1867e | 1990 | bfd_set_error (bfd_error_invalid_operation); |
075caafd | 1991 | return false; |
9783e04a | 1992 | } |
075caafd ILT |
1993 | |
1994 | /* We depend on bfd_close to free all the memory on the obstack. */ | |
1995 | /* FIXME if bfd_release is not using obstacks! */ | |
1996 | return true; | |
0f268757 SC |
1997 | } |
1998 | ||
075caafd ILT |
1999 | #endif |
2000 | ||
2001 | static PTR | |
9783e04a DM |
2002 | buy_and_read (abfd, where, seek_direction, size) |
2003 | bfd *abfd; | |
2004 | file_ptr where; | |
2005 | int seek_direction; | |
2006 | size_t size; | |
075caafd | 2007 | { |
9783e04a DM |
2008 | PTR area = (PTR) bfd_alloc (abfd, size); |
2009 | if (!area) | |
2010 | { | |
57a1867e | 2011 | bfd_set_error (bfd_error_no_memory); |
9783e04a | 2012 | return (NULL); |
075caafd | 2013 | } |
791a3db4 ILT |
2014 | if (bfd_seek (abfd, where, seek_direction) != 0 |
2015 | || bfd_read (area, 1, size, abfd) != size) | |
2016 | return (NULL); | |
9783e04a | 2017 | return (area); |
075caafd | 2018 | } /* buy_and_read() */ |
0f268757 | 2019 | |
9fda1a39 | 2020 | /* |
9783e04a | 2021 | SUBSUBSECTION |
c188b0be | 2022 | Reading linenumbers |
9fda1a39 | 2023 | |
9fda1a39 SC |
2024 | Creating the linenumber table is done by reading in the entire |
2025 | coff linenumber table, and creating another table for internal use. | |
6f715d66 | 2026 | |
c188b0be | 2027 | A coff linenumber table is structured so that each function |
9fda1a39 SC |
2028 | is marked as having a line number of 0. Each line within the |
2029 | function is an offset from the first line in the function. The | |
2030 | base of the line number information for the table is stored in | |
9783e04a | 2031 | the symbol associated with the function. |
6f715d66 | 2032 | |
9fda1a39 SC |
2033 | The information is copied from the external to the internal |
2034 | table, and each symbol which marks a function is marked by | |
2035 | pointing its... | |
6f715d66 | 2036 | |
9fda1a39 | 2037 | How does this work ? |
6f715d66 SC |
2038 | |
2039 | */ | |
0f268757 SC |
2040 | |
2041 | static boolean | |
9783e04a | 2042 | coff_slurp_line_table (abfd, asect) |
ab31ae53 KR |
2043 | bfd *abfd; |
2044 | asection *asect; | |
2045 | { | |
9783e04a | 2046 | LINENO *native_lineno; |
ab31ae53 KR |
2047 | alent *lineno_cache; |
2048 | ||
9783e04a | 2049 | BFD_ASSERT (asect->lineno == (alent *) NULL); |
ab31ae53 | 2050 | |
9783e04a DM |
2051 | native_lineno = (LINENO *) buy_and_read (abfd, |
2052 | asect->line_filepos, | |
2053 | SEEK_SET, | |
2054 | (size_t) (LINESZ * | |
2055 | asect->lineno_count)); | |
ab31ae53 | 2056 | lineno_cache = |
9783e04a | 2057 | (alent *) bfd_alloc (abfd, (size_t) ((asect->lineno_count + 1) * sizeof (alent))); |
ab31ae53 KR |
2058 | if (lineno_cache == NULL) |
2059 | { | |
57a1867e | 2060 | bfd_set_error (bfd_error_no_memory); |
0f268757 | 2061 | return false; |
ab31ae53 KR |
2062 | } |
2063 | else | |
2064 | { | |
9783e04a DM |
2065 | unsigned int counter = 0; |
2066 | alent *cache_ptr = lineno_cache; | |
2067 | LINENO *src = native_lineno; | |
cbdc7909 | 2068 | |
ab31ae53 KR |
2069 | while (counter < asect->lineno_count) |
2070 | { | |
2071 | struct internal_lineno dst; | |
9783e04a | 2072 | coff_swap_lineno_in (abfd, src, &dst); |
ab31ae53 KR |
2073 | cache_ptr->line_number = dst.l_lnno; |
2074 | ||
2075 | if (cache_ptr->line_number == 0) | |
2076 | { | |
2077 | coff_symbol_type *sym = | |
9783e04a DM |
2078 | (coff_symbol_type *) (dst.l_addr.l_symndx |
2079 | + obj_raw_syments (abfd))->u.syment._n._n_n._n_zeroes; | |
ab31ae53 KR |
2080 | cache_ptr->u.sym = (asymbol *) sym; |
2081 | sym->lineno = cache_ptr; | |
2082 | } | |
2083 | else | |
2084 | { | |
2085 | cache_ptr->u.offset = dst.l_addr.l_paddr | |
9783e04a DM |
2086 | - bfd_section_vma (abfd, asect); |
2087 | } /* If no linenumber expect a symbol index */ | |
ab31ae53 KR |
2088 | |
2089 | cache_ptr++; | |
2090 | src++; | |
2091 | counter++; | |
0f268757 | 2092 | } |
0f268757 | 2093 | cache_ptr->line_number = 0; |
cbdc7909 | 2094 | |
0f268757 | 2095 | } |
ab31ae53 KR |
2096 | asect->lineno = lineno_cache; |
2097 | /* FIXME, free native_lineno here, or use alloca or something. */ | |
2098 | return true; | |
2099 | } | |
0f268757 | 2100 | |
ab31ae53 | 2101 | static boolean |
57a1867e DM |
2102 | coff_slurp_symbol_table (abfd) |
2103 | bfd * abfd; | |
6f715d66 | 2104 | { |
9783e04a | 2105 | combined_entry_type *native_symbols; |
6f715d66 | 2106 | coff_symbol_type *cached_area; |
9783e04a | 2107 | unsigned int *table_ptr; |
cbdc7909 | 2108 | |
9783e04a DM |
2109 | unsigned int number_of_symbols = 0; |
2110 | if (obj_symbols (abfd)) | |
6f715d66 | 2111 | return true; |
791a3db4 ILT |
2112 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0) |
2113 | return false; | |
cbdc7909 | 2114 | |
6f715d66 | 2115 | /* Read in the symbol table */ |
9783e04a DM |
2116 | if ((native_symbols = coff_get_normalized_symtab (abfd)) == NULL) |
2117 | { | |
2118 | return (false); | |
2119 | } /* on error */ | |
cbdc7909 | 2120 | |
6f715d66 | 2121 | /* Allocate enough room for all the symbols in cached form */ |
69645d10 ILT |
2122 | cached_area = ((coff_symbol_type *) |
2123 | bfd_alloc (abfd, | |
2124 | (obj_raw_syment_count (abfd) | |
2125 | * sizeof (coff_symbol_type)))); | |
cbdc7909 | 2126 | |
9783e04a DM |
2127 | if (cached_area == NULL) |
2128 | { | |
57a1867e | 2129 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
2130 | return false; |
2131 | } /* on error */ | |
69645d10 ILT |
2132 | table_ptr = ((unsigned int *) |
2133 | bfd_alloc (abfd, | |
2134 | (obj_raw_syment_count (abfd) | |
2135 | * sizeof (unsigned int)))); | |
cbdc7909 | 2136 | |
9783e04a DM |
2137 | if (table_ptr == NULL) |
2138 | { | |
57a1867e | 2139 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
2140 | return false; |
2141 | } | |
2142 | else | |
2143 | { | |
2144 | coff_symbol_type *dst = cached_area; | |
69645d10 | 2145 | unsigned int last_native_index = obj_raw_syment_count (abfd); |
9783e04a DM |
2146 | unsigned int this_index = 0; |
2147 | while (this_index < last_native_index) | |
2148 | { | |
2149 | combined_entry_type *src = native_symbols + this_index; | |
2150 | table_ptr[this_index] = number_of_symbols; | |
2151 | dst->symbol.the_bfd = abfd; | |
2152 | ||
2153 | dst->symbol.name = (char *) (src->u.syment._n._n_n._n_offset); | |
2154 | /* We use the native name field to point to the cached field. */ | |
2155 | src->u.syment._n._n_n._n_zeroes = (long) dst; | |
2156 | dst->symbol.section = coff_section_from_bfd_index (abfd, | |
2157 | src->u.syment.n_scnum); | |
2158 | dst->symbol.flags = 0; | |
2159 | dst->done_lineno = false; | |
2160 | ||
2161 | switch (src->u.syment.n_sclass) | |
2162 | { | |
0f268757 | 2163 | #ifdef I960 |
9783e04a | 2164 | case C_LEAFEXT: |
0f268757 | 2165 | #if 0 |
9783e04a DM |
2166 | dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma; |
2167 | dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL; | |
2168 | dst->symbol.flags |= BSF_NOT_AT_END; | |
0f268757 | 2169 | #endif |
9783e04a | 2170 | /* Fall through to next case */ |
cbdc7909 | 2171 | |
0f268757 | 2172 | #endif |
cbdc7909 | 2173 | |
9783e04a | 2174 | case C_EXT: |
cbdc7909 | 2175 | #ifdef RS6000COFF_C |
9783e04a DM |
2176 | case C_HIDEXT: |
2177 | #endif | |
2178 | if ((src->u.syment.n_scnum) == 0) | |
2179 | { | |
2180 | if ((src->u.syment.n_value) == 0) | |
2181 | { | |
b5b056fc | 2182 | dst->symbol.section = bfd_und_section_ptr; |
9783e04a DM |
2183 | dst->symbol.value = 0; |
2184 | } | |
2185 | else | |
2186 | { | |
b5b056fc | 2187 | dst->symbol.section = bfd_com_section_ptr; |
9783e04a DM |
2188 | dst->symbol.value = (src->u.syment.n_value); |
2189 | } | |
2190 | } | |
2191 | else | |
2192 | { | |
2193 | /* | |
6f715d66 SC |
2194 | Base the value as an index from the base of the |
2195 | section | |
2196 | */ | |
e98e6ec1 | 2197 | |
9783e04a DM |
2198 | dst->symbol.flags = BSF_EXPORT | BSF_GLOBAL; |
2199 | dst->symbol.value = src->u.syment.n_value - dst->symbol.section->vma; | |
e98e6ec1 | 2200 | |
9783e04a DM |
2201 | if (ISFCN ((src->u.syment.n_type))) |
2202 | { | |
2203 | /* | |
6f715d66 SC |
2204 | A function ext does not go at the end of a file |
2205 | */ | |
9783e04a DM |
2206 | dst->symbol.flags |= BSF_NOT_AT_END; |
2207 | } | |
2208 | } | |
85e0c721 | 2209 | |
9783e04a DM |
2210 | #ifdef RS6000COFF_C |
2211 | /* If this symbol has a csect aux of type LD, the scnlen field | |
2212 | is actually the index of the containing csect symbol. We | |
2213 | need to pointerize it. */ | |
2214 | if (src->u.syment.n_numaux > 0) | |
2215 | { | |
2216 | combined_entry_type *aux; | |
2217 | ||
2218 | aux = src + src->u.syment.n_numaux - 1; | |
2219 | if (SMTYP_SMTYP (aux->u.auxent.x_csect.x_smtyp) == XTY_LD) | |
2220 | { | |
2221 | aux->u.auxent.x_csect.x_scnlen.p = | |
2222 | native_symbols + aux->u.auxent.x_csect.x_scnlen.l; | |
2223 | aux->fix_scnlen = 1; | |
2224 | } | |
2225 | } | |
2226 | #endif | |
2227 | ||
2228 | break; | |
2229 | ||
2230 | case C_STAT: /* static */ | |
0f268757 | 2231 | #ifdef I960 |
9783e04a DM |
2232 | case C_LEAFSTAT: /* static leaf procedure */ |
2233 | #endif | |
2234 | case C_LABEL: /* label */ | |
2235 | if (src->u.syment.n_scnum == -2) | |
2236 | dst->symbol.flags = BSF_DEBUGGING; | |
2237 | else | |
2238 | dst->symbol.flags = BSF_LOCAL; | |
2239 | /* | |
0d740984 SC |
2240 | Base the value as an index from the base of the section, if |
2241 | there is one | |
6f715d66 | 2242 | */ |
9783e04a DM |
2243 | if (dst->symbol.section) |
2244 | dst->symbol.value = (src->u.syment.n_value) - | |
2245 | dst->symbol.section->vma; | |
2246 | else | |
2247 | dst->symbol.value = (src->u.syment.n_value); | |
2248 | break; | |
2249 | ||
2250 | case C_MOS: /* member of structure */ | |
2251 | case C_EOS: /* end of structure */ | |
2252 | #ifdef NOTDEF /* C_AUTOARG has the same value */ | |
41f50af0 | 2253 | #ifdef C_GLBLREG |
9783e04a | 2254 | case C_GLBLREG: /* A29k-specific storage class */ |
41f50af0 SC |
2255 | #endif |
2256 | #endif | |
9783e04a DM |
2257 | case C_REGPARM: /* register parameter */ |
2258 | case C_REG: /* register variable */ | |
0f268757 | 2259 | #ifdef C_AUTOARG |
9783e04a DM |
2260 | case C_AUTOARG: /* 960-specific storage class */ |
2261 | #endif | |
2262 | case C_TPDEF: /* type definition */ | |
2263 | case C_ARG: | |
2264 | case C_AUTO: /* automatic variable */ | |
2265 | case C_FIELD: /* bit field */ | |
2266 | case C_ENTAG: /* enumeration tag */ | |
2267 | case C_MOE: /* member of enumeration */ | |
2268 | case C_MOU: /* member of union */ | |
2269 | case C_UNTAG: /* union tag */ | |
2270 | dst->symbol.flags = BSF_DEBUGGING; | |
2271 | dst->symbol.value = (src->u.syment.n_value); | |
2272 | break; | |
2273 | ||
2274 | case C_FILE: /* file name */ | |
2275 | case C_STRTAG: /* structure tag */ | |
cbdc7909 | 2276 | #ifdef RS6000COFF_C |
9783e04a DM |
2277 | case C_BINCL: /* beginning of include file */ |
2278 | case C_EINCL: /* ending of include file */ | |
2279 | case C_GSYM: | |
2280 | case C_LSYM: | |
2281 | case C_PSYM: | |
2282 | case C_RSYM: | |
2283 | case C_RPSYM: | |
2284 | case C_STSYM: | |
2285 | case C_DECL: | |
2286 | case C_ENTRY: | |
2287 | case C_FUN: | |
2288 | case C_ESTAT: | |
2289 | #endif | |
2290 | dst->symbol.flags = BSF_DEBUGGING; | |
2291 | dst->symbol.value = (src->u.syment.n_value); | |
2292 | break; | |
cbdc7909 | 2293 | |
9783e04a DM |
2294 | #ifdef RS6000COFF_C |
2295 | case C_BSTAT: | |
2296 | dst->symbol.flags = BSF_DEBUGGING; | |
2297 | dst->symbol.value = src->u.syment.n_value; | |
2298 | ||
2299 | /* The value is actually a symbol index. Save a pointer to | |
2300 | the symbol instead of the index. FIXME: This should use a | |
2301 | union. */ | |
2302 | src->u.syment.n_value = | |
2303 | (long) (native_symbols + src->u.syment.n_value); | |
2304 | src->fix_value = 1; | |
2305 | break; | |
2306 | #endif | |
2307 | ||
2308 | case C_BLOCK: /* ".bb" or ".eb" */ | |
2309 | case C_FCN: /* ".bf" or ".ef" */ | |
2310 | case C_EFCN: /* physical end of function */ | |
2311 | dst->symbol.flags = BSF_LOCAL; | |
2312 | /* | |
6f715d66 SC |
2313 | Base the value as an index from the base of the section |
2314 | */ | |
9783e04a DM |
2315 | dst->symbol.value = (src->u.syment.n_value) - dst->symbol.section->vma; |
2316 | break; | |
2317 | ||
2318 | case C_NULL: | |
2319 | case C_EXTDEF: /* external definition */ | |
2320 | case C_ULABEL: /* undefined label */ | |
2321 | case C_USTATIC: /* undefined static */ | |
2322 | case C_LINE: /* line # reformatted as symbol table entry */ | |
2323 | case C_ALIAS: /* duplicate tag */ | |
2324 | case C_HIDDEN: /* ext symbol in dmert public lib */ | |
2325 | default: | |
2326 | ||
2327 | fprintf (stderr, "Unrecognized storage class %d (assuming debugging)\n for %s symbol `%s'\n", | |
2328 | src->u.syment.n_sclass, dst->symbol.section->name, | |
2329 | dst->symbol.name); | |
954d412a | 2330 | /* abort();*/ |
9783e04a DM |
2331 | dst->symbol.flags = BSF_DEBUGGING; |
2332 | dst->symbol.value = (src->u.syment.n_value); | |
2333 | break; | |
2334 | } | |
cbdc7909 | 2335 | |
6590a8c9 | 2336 | /* BFD_ASSERT(dst->symbol.flags != 0);*/ |
cbdc7909 | 2337 | |
9783e04a | 2338 | dst->native = src; |
cbdc7909 | 2339 | |
f135c692 | 2340 | dst->symbol.udata.i = 0; |
9783e04a DM |
2341 | dst->lineno = (alent *) NULL; |
2342 | this_index += (src->u.syment.n_numaux) + 1; | |
2343 | dst++; | |
2344 | number_of_symbols++; | |
2345 | } /* walk the native symtab */ | |
2346 | } /* bfdize the native symtab */ | |
cbdc7909 | 2347 | |
9783e04a DM |
2348 | obj_symbols (abfd) = cached_area; |
2349 | obj_raw_syments (abfd) = native_symbols; | |
cbdc7909 | 2350 | |
9783e04a DM |
2351 | bfd_get_symcount (abfd) = number_of_symbols; |
2352 | obj_convert (abfd) = table_ptr; | |
6f715d66 | 2353 | /* Slurp the line tables for each section too */ |
9783e04a DM |
2354 | { |
2355 | asection *p; | |
2356 | p = abfd->sections; | |
2357 | while (p) | |
2358 | { | |
2359 | coff_slurp_line_table (abfd, p); | |
6f715d66 | 2360 | p = p->next; |
0f268757 | 2361 | } |
9783e04a | 2362 | } |
6f715d66 SC |
2363 | return true; |
2364 | } /* coff_slurp_symbol_table() */ | |
0f268757 | 2365 | |
69645d10 ILT |
2366 | /* Check whether a symbol is globally visible. This is used by the |
2367 | COFF backend linker code in cofflink.c, since a couple of targets | |
2368 | have globally visible symbols which are not class C_EXT. This | |
2369 | function need not handle the case of n_class == C_EXT. */ | |
2370 | ||
2371 | #undef OTHER_GLOBAL_CLASS | |
2372 | ||
2373 | #ifdef I960 | |
2374 | #define OTHER_GLOBAL_CLASS C_LEAFEXT | |
2375 | #endif | |
2376 | ||
2377 | #ifdef RS6000COFF_C | |
2378 | #define OTHER_GLOBAL_CLASS C_HIDEXT | |
2379 | #endif | |
2380 | ||
2381 | #ifdef OTHER_GLOBAL_CLASS | |
2382 | ||
2383 | static boolean | |
2384 | coff_sym_is_global (abfd, syment) | |
2385 | bfd *abfd; | |
2386 | struct internal_syment *syment; | |
2387 | { | |
2388 | if (syment->n_sclass == OTHER_GLOBAL_CLASS) | |
2389 | return true; | |
2390 | return false; | |
2391 | } | |
2392 | ||
2393 | #undef OTHER_GLOBAL_CLASS | |
2394 | ||
2395 | #else /* ! defined (OTHER_GLOBAL_CLASS) */ | |
2396 | ||
2397 | /* sym_is_global should not be defined if it has nothing to do. */ | |
2398 | ||
2399 | #define coff_sym_is_global 0 | |
2400 | ||
2401 | #endif /* ! defined (OTHER_GLOBAL_CLASS) */ | |
2402 | ||
9fda1a39 | 2403 | /* |
9783e04a | 2404 | SUBSUBSECTION |
c188b0be | 2405 | Reading relocations |
9fda1a39 | 2406 | |
9fda1a39 SC |
2407 | Coff relocations are easily transformed into the internal BFD form |
2408 | (@code{arelent}). | |
2409 | ||
2410 | Reading a coff relocation table is done in the following stages: | |
2411 | ||
c188b0be | 2412 | o Read the entire coff relocation table into memory. |
9fda1a39 | 2413 | |
c188b0be | 2414 | o Process each relocation in turn; first swap it from the |
9fda1a39 SC |
2415 | external to the internal form. |
2416 | ||
c188b0be DM |
2417 | o Turn the symbol referenced in the relocation's symbol index |
2418 | into a pointer into the canonical symbol table. | |
2419 | This table is the same as the one returned by a call to | |
2420 | @code{bfd_canonicalize_symtab}. The back end will call that | |
9fda1a39 SC |
2421 | routine and save the result if a canonicalization hasn't been done. |
2422 | ||
2423 | o The reloc index is turned into a pointer to a howto | |
2424 | structure, in a back end specific way. For instance, the 386 | |
2425 | and 960 use the @code{r_type} to directly produce an index | |
2426 | into a howto table vector; the 88k subtracts a number from the | |
2427 | @code{r_type} field and creates an addend field. | |
2428 | ||
2429 | ||
6f715d66 SC |
2430 | */ |
2431 | ||
3b4f1a5d | 2432 | #ifndef CALC_ADDEND |
492d52cc ILT |
2433 | #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \ |
2434 | { \ | |
2435 | coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \ | |
2436 | if (ptr && bfd_asymbol_bfd (ptr) != abfd) \ | |
2437 | coffsym = (obj_symbols (abfd) \ | |
2438 | + (cache_ptr->sym_ptr_ptr - symbols)); \ | |
2439 | else if (ptr) \ | |
2440 | coffsym = coff_symbol_from (abfd, ptr); \ | |
2441 | if (coffsym != (coff_symbol_type *) NULL \ | |
2442 | && coffsym->native->u.syment.n_scnum == 0) \ | |
2443 | cache_ptr->addend = 0; \ | |
2444 | else if (ptr && bfd_asymbol_bfd (ptr) == abfd \ | |
2445 | && ptr->section != (asection *) NULL) \ | |
2446 | cache_ptr->addend = - (ptr->section->vma + ptr->value); \ | |
2447 | else \ | |
2448 | cache_ptr->addend = 0; \ | |
2449 | } | |
3b4f1a5d SC |
2450 | #endif |
2451 | ||
9783e04a | 2452 | static boolean |
57a1867e DM |
2453 | coff_slurp_reloc_table (abfd, asect, symbols) |
2454 | bfd * abfd; | |
2455 | sec_ptr asect; | |
2456 | asymbol ** symbols; | |
85e0c721 | 2457 | { |
9783e04a DM |
2458 | RELOC *native_relocs; |
2459 | arelent *reloc_cache; | |
2460 | arelent *cache_ptr; | |
3b4f1a5d SC |
2461 | |
2462 | unsigned int idx; | |
9783e04a | 2463 | |
3b4f1a5d | 2464 | if (asect->relocation) |
9783e04a | 2465 | return true; |
3b4f1a5d | 2466 | if (asect->reloc_count == 0) |
9783e04a | 2467 | return true; |
3b4f1a5d | 2468 | if (asect->flags & SEC_CONSTRUCTOR) |
9783e04a DM |
2469 | return true; |
2470 | if (!coff_slurp_symbol_table (abfd)) | |
2471 | return false; | |
3b4f1a5d | 2472 | native_relocs = |
9783e04a DM |
2473 | (RELOC *) buy_and_read (abfd, |
2474 | asect->rel_filepos, | |
2475 | SEEK_SET, | |
2476 | (size_t) (RELSZ * | |
2477 | asect->reloc_count)); | |
3b4f1a5d | 2478 | reloc_cache = (arelent *) |
9783e04a | 2479 | bfd_alloc (abfd, (size_t) (asect->reloc_count * sizeof (arelent))); |
3b4f1a5d | 2480 | |
9783e04a DM |
2481 | if (reloc_cache == NULL) |
2482 | { | |
57a1867e | 2483 | bfd_set_error (bfd_error_no_memory); |
3b4f1a5d | 2484 | return false; |
9783e04a | 2485 | } |
3b4f1a5d | 2486 | |
9783e04a DM |
2487 | |
2488 | for (idx = 0; idx < asect->reloc_count; idx++) | |
2489 | { | |
616ebcfd | 2490 | #ifdef RELOC_PROCESSING |
3b4f1a5d | 2491 | struct internal_reloc dst; |
9783e04a | 2492 | struct external_reloc *src; |
3b4f1a5d SC |
2493 | |
2494 | cache_ptr = reloc_cache + idx; | |
2495 | src = native_relocs + idx; | |
69645d10 | 2496 | coff_swap_reloc_in (abfd, src, &dst); |
3b4f1a5d | 2497 | |
9783e04a | 2498 | RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect); |
9898b929 | 2499 | #else |
616ebcfd | 2500 | struct internal_reloc dst; |
9783e04a DM |
2501 | asymbol *ptr; |
2502 | struct external_reloc *src; | |
616ebcfd SC |
2503 | |
2504 | cache_ptr = reloc_cache + idx; | |
2505 | src = native_relocs + idx; | |
2506 | ||
69645d10 | 2507 | coff_swap_reloc_in (abfd, src, &dst); |
616ebcfd | 2508 | |
9898b929 JG |
2509 | |
2510 | cache_ptr->address = dst.r_vaddr; | |
2511 | ||
9783e04a | 2512 | if (dst.r_symndx != -1) |
8070f29d KR |
2513 | { |
2514 | /* @@ Should never be greater than count of symbols! */ | |
2515 | if (dst.r_symndx >= obj_conv_table_size (abfd)) | |
2516 | abort (); | |
9783e04a | 2517 | cache_ptr->sym_ptr_ptr = symbols + obj_convert (abfd)[dst.r_symndx]; |
9898b929 | 2518 | ptr = *(cache_ptr->sym_ptr_ptr); |
8070f29d | 2519 | } |
9783e04a | 2520 | else |
8070f29d | 2521 | { |
b5b056fc | 2522 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
8070f29d KR |
2523 | ptr = 0; |
2524 | } | |
85e0c721 | 2525 | |
cd83759c KR |
2526 | /* The symbols definitions that we have read in have been |
2527 | relocated as if their sections started at 0. But the offsets | |
2528 | refering to the symbols in the raw data have not been | |
2529 | modified, so we have to have a negative addend to compensate. | |
2530 | ||
2531 | Note that symbols which used to be common must be left alone */ | |
cbdc7909 | 2532 | |
3b4f1a5d | 2533 | /* Calculate any reloc addend by looking at the symbol */ |
9783e04a | 2534 | CALC_ADDEND (abfd, ptr, dst, cache_ptr); |
cbdc7909 | 2535 | |
3b4f1a5d | 2536 | cache_ptr->address -= asect->vma; |
e98e6ec1 | 2537 | /* !! cache_ptr->section = (asection *) NULL;*/ |
20fdc627 | 2538 | |
3b4f1a5d | 2539 | /* Fill in the cache_ptr->howto field from dst.r_type */ |
9783e04a | 2540 | RTYPE2HOWTO (cache_ptr, &dst); |
9898b929 JG |
2541 | #endif |
2542 | ||
9783e04a | 2543 | } |
cbdc7909 | 2544 | |
3b4f1a5d SC |
2545 | asect->relocation = reloc_cache; |
2546 | return true; | |
85e0c721 | 2547 | } |
0f268757 | 2548 | |
f135c692 ILT |
2549 | #ifndef coff_rtype_to_howto |
2550 | #ifdef RTYPE2HOWTO | |
2551 | ||
2552 | /* Get the howto structure for a reloc. This is only used if the file | |
2553 | including this one defines coff_relocate_section to be | |
2554 | _bfd_coff_generic_relocate_section, so it is OK if it does not | |
2555 | always work. It is the responsibility of the including file to | |
2556 | make sure it is reasonable if it is needed. */ | |
2557 | ||
2558 | static reloc_howto_type *coff_rtype_to_howto | |
2559 | PARAMS ((bfd *, asection *, struct internal_reloc *, | |
2560 | struct coff_link_hash_entry *, struct internal_syment *, | |
2561 | bfd_vma *)); | |
2562 | ||
2563 | /*ARGSUSED*/ | |
2564 | static reloc_howto_type * | |
2565 | coff_rtype_to_howto (abfd, sec, rel, h, sym, addendp) | |
2566 | bfd *abfd; | |
2567 | asection *sec; | |
2568 | struct internal_reloc *rel; | |
2569 | struct coff_link_hash_entry *h; | |
2570 | struct internal_syment *sym; | |
2571 | bfd_vma *addendp; | |
2572 | { | |
2573 | arelent genrel; | |
2574 | ||
2575 | RTYPE2HOWTO (&genrel, rel); | |
2576 | return genrel.howto; | |
2577 | } | |
2578 | ||
2579 | #else /* ! defined (RTYPE2HOWTO) */ | |
2580 | ||
2581 | #define coff_rtype_to_howto NULL | |
2582 | ||
2583 | #endif /* ! defined (RTYPE2HOWTO) */ | |
2584 | #endif /* ! defined (coff_rtype_to_howto) */ | |
0f268757 | 2585 | |
cd83759c | 2586 | /* This is stupid. This function should be a boolean predicate. */ |
326e32d7 | 2587 | static long |
57a1867e DM |
2588 | coff_canonicalize_reloc (abfd, section, relptr, symbols) |
2589 | bfd * abfd; | |
2590 | sec_ptr section; | |
2591 | arelent ** relptr; | |
2592 | asymbol ** symbols; | |
85e0c721 | 2593 | { |
9783e04a DM |
2594 | arelent *tblptr = section->relocation; |
2595 | unsigned int count = 0; | |
cbdc7909 | 2596 | |
cbdc7909 | 2597 | |
9783e04a DM |
2598 | if (section->flags & SEC_CONSTRUCTOR) |
2599 | { | |
2600 | /* this section has relocs made up by us, they are not in the | |
e98e6ec1 SC |
2601 | file, so take them out of their chain and place them into |
2602 | the data area provided */ | |
9783e04a DM |
2603 | arelent_chain *chain = section->constructor_chain; |
2604 | for (count = 0; count < section->reloc_count; count++) | |
2605 | { | |
2606 | *relptr++ = &chain->relent; | |
2607 | chain = chain->next; | |
2608 | } | |
e98e6ec1 | 2609 | |
9783e04a DM |
2610 | } |
2611 | else | |
2612 | { | |
326e32d7 ILT |
2613 | if (! coff_slurp_reloc_table (abfd, section, symbols)) |
2614 | return -1; | |
85e0c721 | 2615 | |
9783e04a | 2616 | tblptr = section->relocation; |
85e0c721 | 2617 | |
9783e04a DM |
2618 | for (; count++ < section->reloc_count;) |
2619 | *relptr++ = tblptr++; | |
cbdc7909 | 2620 | |
85e0c721 | 2621 | |
9783e04a | 2622 | } |
e98e6ec1 SC |
2623 | *relptr = 0; |
2624 | return section->reloc_count; | |
85e0c721 | 2625 | } |
0f268757 | 2626 | |
0f268757 SC |
2627 | #ifdef GNU960 |
2628 | file_ptr | |
9783e04a DM |
2629 | coff_sym_filepos (abfd) |
2630 | bfd *abfd; | |
2631 | { | |
2632 | return obj_sym_filepos (abfd); | |
2633 | } | |
0f268757 SC |
2634 | #endif |
2635 | ||
fbb61b50 SC |
2636 | #ifndef coff_reloc16_estimate |
2637 | #define coff_reloc16_estimate dummy_reloc16_estimate | |
2638 | ||
56775366 | 2639 | static int |
09a28207 ILT |
2640 | dummy_reloc16_estimate (abfd, input_section, reloc, shrink, link_info) |
2641 | bfd *abfd; | |
fbb61b50 | 2642 | asection *input_section; |
fbb61b50 | 2643 | arelent *reloc; |
56775366 | 2644 | unsigned int shrink; |
330595d0 | 2645 | struct bfd_link_info *link_info; |
fbb61b50 | 2646 | { |
56775366 | 2647 | abort (); |
fbb61b50 SC |
2648 | } |
2649 | ||
2650 | #endif | |
2651 | ||
075caafd | 2652 | #ifndef coff_reloc16_extra_cases |
9e768fa2 JK |
2653 | #define coff_reloc16_extra_cases dummy_reloc16_extra_cases |
2654 | /* This works even if abort is not declared in any header file. */ | |
4d09e8ac | 2655 | static void |
330595d0 ILT |
2656 | dummy_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr, |
2657 | dst_ptr) | |
9e768fa2 | 2658 | bfd *abfd; |
330595d0 ILT |
2659 | struct bfd_link_info *link_info; |
2660 | struct bfd_link_order *link_order; | |
9e768fa2 JK |
2661 | arelent *reloc; |
2662 | bfd_byte *data; | |
2663 | unsigned int *src_ptr; | |
2664 | unsigned int *dst_ptr; | |
2665 | { | |
9783e04a | 2666 | fprintf (stderr, "%s\n", reloc->howto->name); |
9e768fa2 JK |
2667 | abort (); |
2668 | } | |
8ad2a31d | 2669 | #endif |
6590a8c9 | 2670 | |
69645d10 ILT |
2671 | /* If coff_relocate_section is defined, we can use the optimized COFF |
2672 | backend linker. Otherwise we must continue to use the old linker. */ | |
2673 | #ifdef coff_relocate_section | |
f135c692 | 2674 | #ifndef coff_bfd_link_hash_table_create |
69645d10 | 2675 | #define coff_bfd_link_hash_table_create _bfd_coff_link_hash_table_create |
f135c692 ILT |
2676 | #endif |
2677 | #ifndef coff_bfd_link_add_symbols | |
69645d10 | 2678 | #define coff_bfd_link_add_symbols _bfd_coff_link_add_symbols |
f135c692 ILT |
2679 | #endif |
2680 | #ifndef coff_bfd_final_link | |
69645d10 | 2681 | #define coff_bfd_final_link _bfd_coff_final_link |
f135c692 | 2682 | #endif |
69645d10 ILT |
2683 | #else /* ! defined (coff_relocate_section) */ |
2684 | #define coff_relocate_section NULL | |
2685 | #define coff_bfd_link_hash_table_create _bfd_generic_link_hash_table_create | |
2686 | #define coff_bfd_link_add_symbols _bfd_generic_link_add_symbols | |
2687 | #define coff_bfd_final_link _bfd_generic_final_link | |
2688 | #endif /* ! defined (coff_relocate_section) */ | |
2689 | ||
f135c692 ILT |
2690 | #ifndef coff_adjust_symndx |
2691 | #define coff_adjust_symndx NULL | |
2692 | #endif | |
2693 | ||
9783e04a DM |
2694 | static CONST bfd_coff_backend_data bfd_coff_std_swap_table = |
2695 | { | |
2696 | coff_swap_aux_in, coff_swap_sym_in, coff_swap_lineno_in, | |
2697 | coff_swap_aux_out, coff_swap_sym_out, | |
2698 | coff_swap_lineno_out, coff_swap_reloc_out, | |
2699 | coff_swap_filehdr_out, coff_swap_aouthdr_out, | |
2700 | coff_swap_scnhdr_out, | |
69645d10 | 2701 | FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, |
075caafd | 2702 | #ifdef COFF_LONG_FILENAMES |
9783e04a | 2703 | true, |
075caafd | 2704 | #else |
9783e04a | 2705 | false, |
07de8e96 | 2706 | #endif |
9783e04a | 2707 | coff_swap_filehdr_in, coff_swap_aouthdr_in, coff_swap_scnhdr_in, |
69645d10 ILT |
2708 | coff_swap_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook, |
2709 | coff_mkobject_hook, styp_to_sec_flags, coff_make_section_hook, | |
2710 | coff_set_alignment_hook, coff_slurp_symbol_table, symname_in_debug_hook, | |
2711 | coff_reloc16_extra_cases, coff_reloc16_estimate, | |
2712 | coff_sym_is_global, coff_compute_section_file_positions, | |
f135c692 | 2713 | coff_relocate_section, coff_rtype_to_howto, coff_adjust_symndx |
075caafd | 2714 | }; |
0f268757 | 2715 | |
6812b607 ILT |
2716 | #define coff_close_and_cleanup _bfd_generic_close_and_cleanup |
2717 | #define coff_bfd_free_cached_info _bfd_generic_bfd_free_cached_info | |
2718 | #define coff_get_section_contents _bfd_generic_get_section_contents | |
09a28207 | 2719 | |
09a28207 | 2720 | #define coff_bfd_copy_private_section_data \ |
6812b607 ILT |
2721 | _bfd_generic_bfd_copy_private_section_data |
2722 | #define coff_bfd_copy_private_bfd_data _bfd_generic_bfd_copy_private_bfd_data | |
2723 | ||
09a28207 ILT |
2724 | #ifndef coff_bfd_is_local_label |
2725 | #define coff_bfd_is_local_label bfd_generic_is_local_label | |
2726 | #endif | |
6812b607 ILT |
2727 | |
2728 | /* The reloc lookup routine must be supplied by each individual COFF | |
2729 | backend. */ | |
2730 | #ifndef coff_bfd_reloc_type_lookup | |
2731 | #define coff_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup | |
2732 | #endif | |
2733 | ||
2734 | #define coff_bfd_get_relocated_section_contents \ | |
2735 | bfd_generic_get_relocated_section_contents | |
2736 | #define coff_bfd_relax_section bfd_generic_relax_section |