1 /* bfd back-end for HP PA-RISC SOM objects.
2 Copyright (C) 1990-2018 Free Software Foundation, Inc.
3
4 Contributed by the Center for Software Science at the
5 University of Utah.
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
22 02110-1301, USA. */
23
24 #include "sysdep.h"
25 #include "alloca-conf.h"
26 #include "bfd.h"
27 #include "libiberty.h"
28 #include "libbfd.h"
29 #include "som.h"
30 #include "safe-ctype.h"
31 #include "som/reloc.h"
32 #include "aout/ar.h"
33
34 static bfd_reloc_status_type hppa_som_reloc
35 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
36 static bfd_boolean som_mkobject (bfd *);
37 static bfd_boolean som_is_space (asection *);
38 static bfd_boolean som_is_subspace (asection *);
39 static int compare_subspaces (const void *, const void *);
40 static unsigned long som_compute_checksum (struct som_external_header *);
41 static bfd_boolean som_build_and_write_symbol_table (bfd *);
42 static unsigned int som_slurp_symbol_table (bfd *);
43
44 /* Magic not defined in standard HP-UX header files until 8.0. */
45
46 #ifndef CPU_PA_RISC1_0
47 #define CPU_PA_RISC1_0 0x20B
48 #endif /* CPU_PA_RISC1_0 */
49
50 #ifndef CPU_PA_RISC1_1
51 #define CPU_PA_RISC1_1 0x210
52 #endif /* CPU_PA_RISC1_1 */
53
54 #ifndef CPU_PA_RISC2_0
55 #define CPU_PA_RISC2_0 0x214
56 #endif /* CPU_PA_RISC2_0 */
57
58 #ifndef _PA_RISC1_0_ID
59 #define _PA_RISC1_0_ID CPU_PA_RISC1_0
60 #endif /* _PA_RISC1_0_ID */
61
62 #ifndef _PA_RISC1_1_ID
63 #define _PA_RISC1_1_ID CPU_PA_RISC1_1
64 #endif /* _PA_RISC1_1_ID */
65
66 #ifndef _PA_RISC2_0_ID
67 #define _PA_RISC2_0_ID CPU_PA_RISC2_0
68 #endif /* _PA_RISC2_0_ID */
69
70 #ifndef _PA_RISC_MAXID
71 #define _PA_RISC_MAXID 0x2FF
72 #endif /* _PA_RISC_MAXID */
73
74 #ifndef _PA_RISC_ID
75 #define _PA_RISC_ID(__m_num) \
76 (((__m_num) == _PA_RISC1_0_ID) || \
77 ((__m_num) >= _PA_RISC1_1_ID && (__m_num) <= _PA_RISC_MAXID))
78 #endif /* _PA_RISC_ID */
79
80 /* HIUX in it's infinite stupidity changed the names for several "well
81 known" constants. Work around such braindamage. Try the HPUX version
82 first, then the HIUX version, and finally provide a default. */
83 #ifdef HPUX_AUX_ID
84 #define EXEC_AUX_ID HPUX_AUX_ID
85 #endif
86
87 #if !defined (EXEC_AUX_ID) && defined (HIUX_AUX_ID)
88 #define EXEC_AUX_ID HIUX_AUX_ID
89 #endif
90
91 #ifndef EXEC_AUX_ID
92 #define EXEC_AUX_ID 0
93 #endif
94
95 /* Size (in chars) of the temporary buffers used during fixup and string
96 table writes. */
97
98 #define SOM_TMP_BUFSIZE 8192
99
100 /* Size of the hash table in archives. */
101 #define SOM_LST_HASH_SIZE 31
102
103 /* Max number of SOMs to be found in an archive. */
104 #define SOM_LST_MODULE_LIMIT 1024
105
106 /* Generic alignment macro. */
107 #define SOM_ALIGN(val, alignment) \
108 (((val) + (alignment) - 1) &~ ((unsigned long) (alignment) - 1))
109
110 /* SOM allows any one of the four previous relocations to be reused
111 with a "R_PREV_FIXUP" relocation entry. Since R_PREV_FIXUP
112 relocations are always a single byte, using a R_PREV_FIXUP instead
113 of some multi-byte relocation makes object files smaller.
114
115 Note one side effect of using a R_PREV_FIXUP is the relocation that
116 is being repeated moves to the front of the queue. */
117 struct reloc_queue
118 {
119 unsigned char *reloc;
120 unsigned int size;
121 } reloc_queue[4];
122
123 /* This fully describes the symbol types which may be attached to
124 an EXPORT or IMPORT directive. Only SOM uses this formation
125 (ELF has no need for it). */
126 typedef enum
127 {
128 SYMBOL_TYPE_UNKNOWN,
129 SYMBOL_TYPE_ABSOLUTE,
130 SYMBOL_TYPE_CODE,
131 SYMBOL_TYPE_DATA,
132 SYMBOL_TYPE_ENTRY,
133 SYMBOL_TYPE_MILLICODE,
134 SYMBOL_TYPE_PLABEL,
135 SYMBOL_TYPE_PRI_PROG,
136 SYMBOL_TYPE_SEC_PROG,
137 } pa_symbol_type;
138
139 struct section_to_type
140 {
141 const char *section;
142 char type;
143 };
144
145 /* Assorted symbol information that needs to be derived from the BFD symbol
146 and/or the BFD backend private symbol data. */
147 struct som_misc_symbol_info
148 {
149 unsigned int symbol_type;
150 unsigned int symbol_scope;
151 unsigned int arg_reloc;
152 unsigned int symbol_info;
153 unsigned int symbol_value;
154 unsigned int priv_level;
155 unsigned int secondary_def;
156 unsigned int is_comdat;
157 unsigned int is_common;
158 unsigned int dup_common;
159 };
160
161 /* Map SOM section names to POSIX/BSD single-character symbol types.
162
163 This table includes all the standard subspaces as defined in the
164 current "PRO ABI for PA-RISC Systems", $UNWIND$ which for
165 some reason was left out, and sections specific to embedded stabs. */
166
167 static const struct section_to_type stt[] =
168 {
169 {"$TEXT$", 't'},
170 {"$SHLIB_INFO$", 't'},
171 {"$MILLICODE$", 't'},
172 {"$LIT$", 't'},
173 {"$CODE$", 't'},
174 {"$UNWIND_START$", 't'},
175 {"$UNWIND$", 't'},
176 {"$PRIVATE$", 'd'},
177 {"$PLT$", 'd'},
178 {"$SHLIB_DATA$", 'd'},
179 {"$DATA$", 'd'},
180 {"$SHORTDATA$", 'g'},
181 {"$DLT$", 'd'},
182 {"$GLOBAL$", 'g'},
183 {"$SHORTBSS$", 's'},
184 {"$BSS$", 'b'},
185 {"$GDB_STRINGS$", 'N'},
186 {"$GDB_SYMBOLS$", 'N'},
187 {0, 0}
188 };
189
190 /* About the relocation formatting table...
191
192 There are 256 entries in the table, one for each possible
193 relocation opcode available in SOM. We index the table by
194 the relocation opcode. The names and operations are those
195 defined by a.out_800 (4).
196
197 Right now this table is only used to count and perform minimal
198 processing on relocation streams so that they can be internalized
199 into BFD and symbolically printed by utilities. To make actual use
200 of them would be much more difficult, BFD's concept of relocations
201 is far too simple to handle SOM relocations. The basic assumption
202 that a relocation can be completely processed independent of other
203 relocations before an object file is written is invalid for SOM.
204
205 The SOM relocations are meant to be processed as a stream, they
206 specify copying of data from the input section to the output section
207 while possibly modifying the data in some manner. They also can
208 specify that a variable number of zeros or uninitialized data be
209 inserted on in the output segment at the current offset. Some
210 relocations specify that some previous relocation be re-applied at
211 the current location in the input/output sections. And finally a number
212 of relocations have effects on other sections (R_ENTRY, R_EXIT,
213 R_UNWIND_AUX and a variety of others). There isn't even enough room
214 in the BFD relocation data structure to store enough information to
215 perform all the relocations.
216
217 Each entry in the table has three fields.
218
219 The first entry is an index into this "class" of relocations. This
220 index can then be used as a variable within the relocation itself.
221
222 The second field is a format string which actually controls processing
223 of the relocation. It uses a simple postfix machine to do calculations
224 based on variables/constants found in the string and the relocation
225 stream.
226
227 The third field specifys whether or not this relocation may use
228 a constant (V) from the previous R_DATA_OVERRIDE rather than a constant
229 stored in the instruction.
230
231 Variables:
232
233 L = input space byte count
234 D = index into class of relocations
235 M = output space byte count
236 N = statement number (unused?)
237 O = stack operation
238 R = parameter relocation bits
239 S = symbol index
240 T = first 32 bits of stack unwind information
241 U = second 32 bits of stack unwind information
242 V = a literal constant (usually used in the next relocation)
243 P = a previous relocation
244
245 Lower case letters (starting with 'b') refer to following
246 bytes in the relocation stream. 'b' is the next 1 byte,
247 c is the next 2 bytes, d is the next 3 bytes, etc...
248 This is the variable part of the relocation entries that
249 makes our life a living hell.
250
251 numerical constants are also used in the format string. Note
252 the constants are represented in decimal.
253
254 '+', "*" and "=" represents the obvious postfix operators.
255 '<' represents a left shift.
256
257 Stack Operations:
258
259 Parameter Relocation Bits:
260
261 Unwind Entries:
262
263 Previous Relocations: The index field represents which in the queue
264 of 4 previous fixups should be re-applied.
265
266 Literal Constants: These are generally used to represent addend
267 parts of relocations when these constants are not stored in the
268 fields of the instructions themselves. For example the instruction
269 addil foo-$global$-0x1234 would use an override for "0x1234" rather
270 than storing it into the addil itself. */
271
272 struct fixup_format
273 {
274 int D;
275 const char *format;
276 };
277
278 static const struct fixup_format som_fixup_formats[256] =
279 {
280 /* R_NO_RELOCATION. */
281 { 0, "LD1+4*=" }, /* 0x00 */
282 { 1, "LD1+4*=" }, /* 0x01 */
283 { 2, "LD1+4*=" }, /* 0x02 */
284 { 3, "LD1+4*=" }, /* 0x03 */
285 { 4, "LD1+4*=" }, /* 0x04 */
286 { 5, "LD1+4*=" }, /* 0x05 */
287 { 6, "LD1+4*=" }, /* 0x06 */
288 { 7, "LD1+4*=" }, /* 0x07 */
289 { 8, "LD1+4*=" }, /* 0x08 */
290 { 9, "LD1+4*=" }, /* 0x09 */
291 { 10, "LD1+4*=" }, /* 0x0a */
292 { 11, "LD1+4*=" }, /* 0x0b */
293 { 12, "LD1+4*=" }, /* 0x0c */
294 { 13, "LD1+4*=" }, /* 0x0d */
295 { 14, "LD1+4*=" }, /* 0x0e */
296 { 15, "LD1+4*=" }, /* 0x0f */
297 { 16, "LD1+4*=" }, /* 0x10 */
298 { 17, "LD1+4*=" }, /* 0x11 */
299 { 18, "LD1+4*=" }, /* 0x12 */
300 { 19, "LD1+4*=" }, /* 0x13 */
301 { 20, "LD1+4*=" }, /* 0x14 */
302 { 21, "LD1+4*=" }, /* 0x15 */
303 { 22, "LD1+4*=" }, /* 0x16 */
304 { 23, "LD1+4*=" }, /* 0x17 */
305 { 0, "LD8<b+1+4*=" }, /* 0x18 */
306 { 1, "LD8<b+1+4*=" }, /* 0x19 */
307 { 2, "LD8<b+1+4*=" }, /* 0x1a */
308 { 3, "LD8<b+1+4*=" }, /* 0x1b */
309 { 0, "LD16<c+1+4*=" }, /* 0x1c */
310 { 1, "LD16<c+1+4*=" }, /* 0x1d */
311 { 2, "LD16<c+1+4*=" }, /* 0x1e */
312 { 0, "Ld1+=" }, /* 0x1f */
313 /* R_ZEROES. */
314 { 0, "Lb1+4*=" }, /* 0x20 */
315 { 1, "Ld1+=" }, /* 0x21 */
316 /* R_UNINIT. */
317 { 0, "Lb1+4*=" }, /* 0x22 */
318 { 1, "Ld1+=" }, /* 0x23 */
319 /* R_RELOCATION. */
320 { 0, "L4=" }, /* 0x24 */
321 /* R_DATA_ONE_SYMBOL. */
322 { 0, "L4=Sb=" }, /* 0x25 */
323 { 1, "L4=Sd=" }, /* 0x26 */
324 /* R_DATA_PLABEL. */
325 { 0, "L4=Sb=" }, /* 0x27 */
326 { 1, "L4=Sd=" }, /* 0x28 */
327 /* R_SPACE_REF. */
328 { 0, "L4=" }, /* 0x29 */
329 /* R_REPEATED_INIT. */
330 { 0, "L4=Mb1+4*=" }, /* 0x2a */
331 { 1, "Lb4*=Mb1+L*=" }, /* 0x2b */
332 { 2, "Lb4*=Md1+4*=" }, /* 0x2c */
333 { 3, "Ld1+=Me1+=" }, /* 0x2d */
334 { 0, "" }, /* 0x2e */
335 { 0, "" }, /* 0x2f */
336 /* R_PCREL_CALL. */
337 { 0, "L4=RD=Sb=" }, /* 0x30 */
338 { 1, "L4=RD=Sb=" }, /* 0x31 */
339 { 2, "L4=RD=Sb=" }, /* 0x32 */
340 { 3, "L4=RD=Sb=" }, /* 0x33 */
341 { 4, "L4=RD=Sb=" }, /* 0x34 */
342 { 5, "L4=RD=Sb=" }, /* 0x35 */
343 { 6, "L4=RD=Sb=" }, /* 0x36 */
344 { 7, "L4=RD=Sb=" }, /* 0x37 */
345 { 8, "L4=RD=Sb=" }, /* 0x38 */
346 { 9, "L4=RD=Sb=" }, /* 0x39 */
347 { 0, "L4=RD8<b+=Sb=" }, /* 0x3a */
348 { 1, "L4=RD8<b+=Sb=" }, /* 0x3b */
349 { 0, "L4=RD8<b+=Sd=" }, /* 0x3c */
350 { 1, "L4=RD8<b+=Sd=" }, /* 0x3d */
351 /* R_SHORT_PCREL_MODE. */
352 { 0, "" }, /* 0x3e */
353 /* R_LONG_PCREL_MODE. */
354 { 0, "" }, /* 0x3f */
355 /* R_ABS_CALL. */
356 { 0, "L4=RD=Sb=" }, /* 0x40 */
357 { 1, "L4=RD=Sb=" }, /* 0x41 */
358 { 2, "L4=RD=Sb=" }, /* 0x42 */
359 { 3, "L4=RD=Sb=" }, /* 0x43 */
360 { 4, "L4=RD=Sb=" }, /* 0x44 */
361 { 5, "L4=RD=Sb=" }, /* 0x45 */
362 { 6, "L4=RD=Sb=" }, /* 0x46 */
363 { 7, "L4=RD=Sb=" }, /* 0x47 */
364 { 8, "L4=RD=Sb=" }, /* 0x48 */
365 { 9, "L4=RD=Sb=" }, /* 0x49 */
366 { 0, "L4=RD8<b+=Sb=" }, /* 0x4a */
367 { 1, "L4=RD8<b+=Sb=" }, /* 0x4b */
368 { 0, "L4=RD8<b+=Sd=" }, /* 0x4c */
369 { 1, "L4=RD8<b+=Sd=" }, /* 0x4d */
370 /* R_RESERVED. */
371 { 0, "" }, /* 0x4e */
372 { 0, "" }, /* 0x4f */
373 /* R_DP_RELATIVE. */
374 { 0, "L4=SD=" }, /* 0x50 */
375 { 1, "L4=SD=" }, /* 0x51 */
376 { 2, "L4=SD=" }, /* 0x52 */
377 { 3, "L4=SD=" }, /* 0x53 */
378 { 4, "L4=SD=" }, /* 0x54 */
379 { 5, "L4=SD=" }, /* 0x55 */
380 { 6, "L4=SD=" }, /* 0x56 */
381 { 7, "L4=SD=" }, /* 0x57 */
382 { 8, "L4=SD=" }, /* 0x58 */
383 { 9, "L4=SD=" }, /* 0x59 */
384 { 10, "L4=SD=" }, /* 0x5a */
385 { 11, "L4=SD=" }, /* 0x5b */
386 { 12, "L4=SD=" }, /* 0x5c */
387 { 13, "L4=SD=" }, /* 0x5d */
388 { 14, "L4=SD=" }, /* 0x5e */
389 { 15, "L4=SD=" }, /* 0x5f */
390 { 16, "L4=SD=" }, /* 0x60 */
391 { 17, "L4=SD=" }, /* 0x61 */
392 { 18, "L4=SD=" }, /* 0x62 */
393 { 19, "L4=SD=" }, /* 0x63 */
394 { 20, "L4=SD=" }, /* 0x64 */
395 { 21, "L4=SD=" }, /* 0x65 */
396 { 22, "L4=SD=" }, /* 0x66 */
397 { 23, "L4=SD=" }, /* 0x67 */
398 { 24, "L4=SD=" }, /* 0x68 */
399 { 25, "L4=SD=" }, /* 0x69 */
400 { 26, "L4=SD=" }, /* 0x6a */
401 { 27, "L4=SD=" }, /* 0x6b */
402 { 28, "L4=SD=" }, /* 0x6c */
403 { 29, "L4=SD=" }, /* 0x6d */
404 { 30, "L4=SD=" }, /* 0x6e */
405 { 31, "L4=SD=" }, /* 0x6f */
406 { 32, "L4=Sb=" }, /* 0x70 */
407 { 33, "L4=Sd=" }, /* 0x71 */
408 /* R_DATA_GPREL. */
409 { 0, "L4=Sd=" }, /* 0x72 */
410 /* R_RESERVED. */
411 { 0, "" }, /* 0x73 */
412 { 0, "" }, /* 0x74 */
413 { 0, "" }, /* 0x75 */
414 { 0, "" }, /* 0x76 */
415 { 0, "" }, /* 0x77 */
416 /* R_DLT_REL. */
417 { 0, "L4=Sb=" }, /* 0x78 */
418 { 1, "L4=Sd=" }, /* 0x79 */
419 /* R_RESERVED. */
420 { 0, "" }, /* 0x7a */
421 { 0, "" }, /* 0x7b */
422 { 0, "" }, /* 0x7c */
423 { 0, "" }, /* 0x7d */
424 { 0, "" }, /* 0x7e */
425 { 0, "" }, /* 0x7f */
426 /* R_CODE_ONE_SYMBOL. */
427 { 0, "L4=SD=" }, /* 0x80 */
428 { 1, "L4=SD=" }, /* 0x81 */
429 { 2, "L4=SD=" }, /* 0x82 */
430 { 3, "L4=SD=" }, /* 0x83 */
431 { 4, "L4=SD=" }, /* 0x84 */
432 { 5, "L4=SD=" }, /* 0x85 */
433 { 6, "L4=SD=" }, /* 0x86 */
434 { 7, "L4=SD=" }, /* 0x87 */
435 { 8, "L4=SD=" }, /* 0x88 */
436 { 9, "L4=SD=" }, /* 0x89 */
437 { 10, "L4=SD=" }, /* 0x8q */
438 { 11, "L4=SD=" }, /* 0x8b */
439 { 12, "L4=SD=" }, /* 0x8c */
440 { 13, "L4=SD=" }, /* 0x8d */
441 { 14, "L4=SD=" }, /* 0x8e */
442 { 15, "L4=SD=" }, /* 0x8f */
443 { 16, "L4=SD=" }, /* 0x90 */
444 { 17, "L4=SD=" }, /* 0x91 */
445 { 18, "L4=SD=" }, /* 0x92 */
446 { 19, "L4=SD=" }, /* 0x93 */
447 { 20, "L4=SD=" }, /* 0x94 */
448 { 21, "L4=SD=" }, /* 0x95 */
449 { 22, "L4=SD=" }, /* 0x96 */
450 { 23, "L4=SD=" }, /* 0x97 */
451 { 24, "L4=SD=" }, /* 0x98 */
452 { 25, "L4=SD=" }, /* 0x99 */
453 { 26, "L4=SD=" }, /* 0x9a */
454 { 27, "L4=SD=" }, /* 0x9b */
455 { 28, "L4=SD=" }, /* 0x9c */
456 { 29, "L4=SD=" }, /* 0x9d */
457 { 30, "L4=SD=" }, /* 0x9e */
458 { 31, "L4=SD=" }, /* 0x9f */
459 { 32, "L4=Sb=" }, /* 0xa0 */
460 { 33, "L4=Sd=" }, /* 0xa1 */
461 /* R_RESERVED. */
462 { 0, "" }, /* 0xa2 */
463 { 0, "" }, /* 0xa3 */
464 { 0, "" }, /* 0xa4 */
465 { 0, "" }, /* 0xa5 */
466 { 0, "" }, /* 0xa6 */
467 { 0, "" }, /* 0xa7 */
468 { 0, "" }, /* 0xa8 */
469 { 0, "" }, /* 0xa9 */
470 { 0, "" }, /* 0xaa */
471 { 0, "" }, /* 0xab */
472 { 0, "" }, /* 0xac */
473 { 0, "" }, /* 0xad */
474 /* R_MILLI_REL. */
475 { 0, "L4=Sb=" }, /* 0xae */
476 { 1, "L4=Sd=" }, /* 0xaf */
477 /* R_CODE_PLABEL. */
478 { 0, "L4=Sb=" }, /* 0xb0 */
479 { 1, "L4=Sd=" }, /* 0xb1 */
480 /* R_BREAKPOINT. */
481 { 0, "L4=" }, /* 0xb2 */
482 /* R_ENTRY. */
483 { 0, "Te=Ue=" }, /* 0xb3 */
484 { 1, "Uf=" }, /* 0xb4 */
485 /* R_ALT_ENTRY. */
486 { 0, "" }, /* 0xb5 */
487 /* R_EXIT. */
488 { 0, "" }, /* 0xb6 */
489 /* R_BEGIN_TRY. */
490 { 0, "" }, /* 0xb7 */
491 /* R_END_TRY. */
492 { 0, "R0=" }, /* 0xb8 */
493 { 1, "Rb4*=" }, /* 0xb9 */
494 { 2, "Rd4*=" }, /* 0xba */
495 /* R_BEGIN_BRTAB. */
496 { 0, "" }, /* 0xbb */
497 /* R_END_BRTAB. */
498 { 0, "" }, /* 0xbc */
499 /* R_STATEMENT. */
500 { 0, "Nb=" }, /* 0xbd */
501 { 1, "Nc=" }, /* 0xbe */
502 { 2, "Nd=" }, /* 0xbf */
503 /* R_DATA_EXPR. */
504 { 0, "L4=" }, /* 0xc0 */
505 /* R_CODE_EXPR. */
506 { 0, "L4=" }, /* 0xc1 */
507 /* R_FSEL. */
508 { 0, "" }, /* 0xc2 */
509 /* R_LSEL. */
510 { 0, "" }, /* 0xc3 */
511 /* R_RSEL. */
512 { 0, "" }, /* 0xc4 */
513 /* R_N_MODE. */
514 { 0, "" }, /* 0xc5 */
515 /* R_S_MODE. */
516 { 0, "" }, /* 0xc6 */
517 /* R_D_MODE. */
518 { 0, "" }, /* 0xc7 */
519 /* R_R_MODE. */
520 { 0, "" }, /* 0xc8 */
521 /* R_DATA_OVERRIDE. */
522 { 0, "V0=" }, /* 0xc9 */
523 { 1, "Vb=" }, /* 0xca */
524 { 2, "Vc=" }, /* 0xcb */
525 { 3, "Vd=" }, /* 0xcc */
526 { 4, "Ve=" }, /* 0xcd */
527 /* R_TRANSLATED. */
528 { 0, "" }, /* 0xce */
529 /* R_AUX_UNWIND. */
530 { 0,"Sd=Ve=Ee=" }, /* 0xcf */
531 /* R_COMP1. */
532 { 0, "Ob=" }, /* 0xd0 */
533 /* R_COMP2. */
534 { 0, "Ob=Sd=" }, /* 0xd1 */
535 /* R_COMP3. */
536 { 0, "Ob=Ve=" }, /* 0xd2 */
537 /* R_PREV_FIXUP. */
538 { 0, "P" }, /* 0xd3 */
539 { 1, "P" }, /* 0xd4 */
540 { 2, "P" }, /* 0xd5 */
541 { 3, "P" }, /* 0xd6 */
542 /* R_SEC_STMT. */
543 { 0, "" }, /* 0xd7 */
544 /* R_N0SEL. */
545 { 0, "" }, /* 0xd8 */
546 /* R_N1SEL. */
547 { 0, "" }, /* 0xd9 */
548 /* R_LINETAB. */
549 { 0, "Eb=Sd=Ve=" }, /* 0xda */
550 /* R_LINETAB_ESC. */
551 { 0, "Eb=Mb=" }, /* 0xdb */
552 /* R_LTP_OVERRIDE. */
553 { 0, "" }, /* 0xdc */
554 /* R_COMMENT. */
555 { 0, "Ob=Vf=" }, /* 0xdd */
556 /* R_RESERVED. */
557 { 0, "" }, /* 0xde */
558 { 0, "" }, /* 0xdf */
559 { 0, "" }, /* 0xe0 */
560 { 0, "" }, /* 0xe1 */
561 { 0, "" }, /* 0xe2 */
562 { 0, "" }, /* 0xe3 */
563 { 0, "" }, /* 0xe4 */
564 { 0, "" }, /* 0xe5 */
565 { 0, "" }, /* 0xe6 */
566 { 0, "" }, /* 0xe7 */
567 { 0, "" }, /* 0xe8 */
568 { 0, "" }, /* 0xe9 */
569 { 0, "" }, /* 0xea */
570 { 0, "" }, /* 0xeb */
571 { 0, "" }, /* 0xec */
572 { 0, "" }, /* 0xed */
573 { 0, "" }, /* 0xee */
574 { 0, "" }, /* 0xef */
575 { 0, "" }, /* 0xf0 */
576 { 0, "" }, /* 0xf1 */
577 { 0, "" }, /* 0xf2 */
578 { 0, "" }, /* 0xf3 */
579 { 0, "" }, /* 0xf4 */
580 { 0, "" }, /* 0xf5 */
581 { 0, "" }, /* 0xf6 */
582 { 0, "" }, /* 0xf7 */
583 { 0, "" }, /* 0xf8 */
584 { 0, "" }, /* 0xf9 */
585 { 0, "" }, /* 0xfa */
586 { 0, "" }, /* 0xfb */
587 { 0, "" }, /* 0xfc */
588 { 0, "" }, /* 0xfd */
589 { 0, "" }, /* 0xfe */
590 { 0, "" }, /* 0xff */
591 };
592
593 static const int comp1_opcodes[] =
594 {
595 0x00,
596 0x40,
597 0x41,
598 0x42,
599 0x43,
600 0x44,
601 0x45,
602 0x46,
603 0x47,
604 0x48,
605 0x49,
606 0x4a,
607 0x4b,
608 0x60,
609 0x80,
610 0xa0,
611 0xc0,
612 -1
613 };
614
615 static const int comp2_opcodes[] =
616 {
617 0x00,
618 0x80,
619 0x82,
620 0xc0,
621 -1
622 };
623
624 static const int comp3_opcodes[] =
625 {
626 0x00,
627 0x02,
628 -1
629 };
630
631 /* These apparently are not in older versions of hpux reloc.h (hpux7). */
632
633 /* And these first appeared in hpux10. */
634 #ifndef R_SHORT_PCREL_MODE
635 #define NO_PCREL_MODES
636 #define R_SHORT_PCREL_MODE 0x3e
637 #endif
638
639 #define SOM_HOWTO(TYPE, NAME) \
640 HOWTO(TYPE, 0, 0, 32, FALSE, 0, 0, hppa_som_reloc, NAME, FALSE, 0, 0, FALSE)
641
642 static reloc_howto_type som_hppa_howto_table[] =
643 {
644 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
645 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
646 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
647 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
648 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
649 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
650 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
651 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
652 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
653 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
654 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
655 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
656 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
657 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
658 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
659 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
660 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
661 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
662 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
663 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
664 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
665 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
666 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
667 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
668 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
669 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
670 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
671 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
672 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
673 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
674 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
675 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
676 SOM_HOWTO (R_ZEROES, "R_ZEROES"),
677 SOM_HOWTO (R_ZEROES, "R_ZEROES"),
678 SOM_HOWTO (R_UNINIT, "R_UNINIT"),
679 SOM_HOWTO (R_UNINIT, "R_UNINIT"),
680 SOM_HOWTO (R_RELOCATION, "R_RELOCATION"),
681 SOM_HOWTO (R_DATA_ONE_SYMBOL, "R_DATA_ONE_SYMBOL"),
682 SOM_HOWTO (R_DATA_ONE_SYMBOL, "R_DATA_ONE_SYMBOL"),
683 SOM_HOWTO (R_DATA_PLABEL, "R_DATA_PLABEL"),
684 SOM_HOWTO (R_DATA_PLABEL, "R_DATA_PLABEL"),
685 SOM_HOWTO (R_SPACE_REF, "R_SPACE_REF"),
686 SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"),
687 SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"),
688 SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"),
689 SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"),
690 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
691 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
692 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
693 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
694 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
695 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
696 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
697 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
698 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
699 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
700 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
701 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
702 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
703 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
704 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
705 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
706 SOM_HOWTO (R_SHORT_PCREL_MODE, "R_SHORT_PCREL_MODE"),
707 SOM_HOWTO (R_LONG_PCREL_MODE, "R_LONG_PCREL_MODE"),
708 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
709 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
710 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
711 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
712 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
713 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
714 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
715 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
716 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
717 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
718 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
719 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
720 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
721 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
722 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
723 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
724 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
725 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
726 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
727 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
728 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
729 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
730 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
731 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
732 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
733 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
734 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
735 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
736 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
737 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
738 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
739 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
740 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
741 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
742 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
743 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
744 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
745 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
746 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
747 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
748 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
749 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
750 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
751 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
752 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
753 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
754 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
755 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
756 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
757 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
758 SOM_HOWTO (R_DATA_GPREL, "R_DATA_GPREL"),
759 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
760 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
761 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
762 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
763 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
764 SOM_HOWTO (R_DLT_REL, "R_DLT_REL"),
765 SOM_HOWTO (R_DLT_REL, "R_DLT_REL"),
766 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
767 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
768 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
769 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
770 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
771 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
772 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
773 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
774 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
775 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
776 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
777 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
778 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
779 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
780 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
781 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
782 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
783 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
784 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
785 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
786 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
787 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
788 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
789 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
790 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
791 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
792 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
793 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
794 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
795 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
796 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
797 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
798 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
799 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
800 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
801 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
802 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
803 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
804 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
805 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
806 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
807 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
808 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
809 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
810 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
811 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
812 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
813 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
814 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
815 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
816 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
817 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
818 SOM_HOWTO (R_MILLI_REL, "R_MILLI_REL"),
819 SOM_HOWTO (R_MILLI_REL, "R_MILLI_REL"),
820 SOM_HOWTO (R_CODE_PLABEL, "R_CODE_PLABEL"),
821 SOM_HOWTO (R_CODE_PLABEL, "R_CODE_PLABEL"),
822 SOM_HOWTO (R_BREAKPOINT, "R_BREAKPOINT"),
823 SOM_HOWTO (R_ENTRY, "R_ENTRY"),
824 SOM_HOWTO (R_ENTRY, "R_ENTRY"),
825 SOM_HOWTO (R_ALT_ENTRY, "R_ALT_ENTRY"),
826 SOM_HOWTO (R_EXIT, "R_EXIT"),
827 SOM_HOWTO (R_BEGIN_TRY, "R_BEGIN_TRY"),
828 SOM_HOWTO (R_END_TRY, "R_END_TRY"),
829 SOM_HOWTO (R_END_TRY, "R_END_TRY"),
830 SOM_HOWTO (R_END_TRY, "R_END_TRY"),
831 SOM_HOWTO (R_BEGIN_BRTAB, "R_BEGIN_BRTAB"),
832 SOM_HOWTO (R_END_BRTAB, "R_END_BRTAB"),
833 SOM_HOWTO (R_STATEMENT, "R_STATEMENT"),
834 SOM_HOWTO (R_STATEMENT, "R_STATEMENT"),
835 SOM_HOWTO (R_STATEMENT, "R_STATEMENT"),
836 SOM_HOWTO (R_DATA_EXPR, "R_DATA_EXPR"),
837 SOM_HOWTO (R_CODE_EXPR, "R_CODE_EXPR"),
838 SOM_HOWTO (R_FSEL, "R_FSEL"),
839 SOM_HOWTO (R_LSEL, "R_LSEL"),
840 SOM_HOWTO (R_RSEL, "R_RSEL"),
841 SOM_HOWTO (R_N_MODE, "R_N_MODE"),
842 SOM_HOWTO (R_S_MODE, "R_S_MODE"),
843 SOM_HOWTO (R_D_MODE, "R_D_MODE"),
844 SOM_HOWTO (R_R_MODE, "R_R_MODE"),
845 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"),
846 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"),
847 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"),
848 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"),
849 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"),
850 SOM_HOWTO (R_TRANSLATED, "R_TRANSLATED"),
851 SOM_HOWTO (R_AUX_UNWIND, "R_AUX_UNWIND"),
852 SOM_HOWTO (R_COMP1, "R_COMP1"),
853 SOM_HOWTO (R_COMP2, "R_COMP2"),
854 SOM_HOWTO (R_COMP3, "R_COMP3"),
855 SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"),
856 SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"),
857 SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"),
858 SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"),
859 SOM_HOWTO (R_SEC_STMT, "R_SEC_STMT"),
860 SOM_HOWTO (R_N0SEL, "R_N0SEL"),
861 SOM_HOWTO (R_N1SEL, "R_N1SEL"),
862 SOM_HOWTO (R_LINETAB, "R_LINETAB"),
863 SOM_HOWTO (R_LINETAB_ESC, "R_LINETAB_ESC"),
864 SOM_HOWTO (R_LTP_OVERRIDE, "R_LTP_OVERRIDE"),
865 SOM_HOWTO (R_COMMENT, "R_COMMENT"),
866 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
867 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
868 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
869 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
870 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
871 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
872 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
873 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
874 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
875 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
876 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
877 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
878 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
879 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
880 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
881 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
882 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
883 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
884 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
885 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
886 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
887 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
888 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
889 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
890 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
891 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
892 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
893 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
894 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
895 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
896 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
897 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
898 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
899 SOM_HOWTO (R_RESERVED, "R_RESERVED")
900 };
901
902 /* Initialize the SOM relocation queue. By definition the queue holds
903 the last four multibyte fixups. */
904
905 static void
som_initialize_reloc_queue(struct reloc_queue * queue)906 som_initialize_reloc_queue (struct reloc_queue *queue)
907 {
908 queue[0].reloc = NULL;
909 queue[0].size = 0;
910 queue[1].reloc = NULL;
911 queue[1].size = 0;
912 queue[2].reloc = NULL;
913 queue[2].size = 0;
914 queue[3].reloc = NULL;
915 queue[3].size = 0;
916 }
917
918 /* Insert a new relocation into the relocation queue. */
919
920 static void
som_reloc_queue_insert(unsigned char * p,unsigned int size,struct reloc_queue * queue)921 som_reloc_queue_insert (unsigned char *p,
922 unsigned int size,
923 struct reloc_queue *queue)
924 {
925 queue[3].reloc = queue[2].reloc;
926 queue[3].size = queue[2].size;
927 queue[2].reloc = queue[1].reloc;
928 queue[2].size = queue[1].size;
929 queue[1].reloc = queue[0].reloc;
930 queue[1].size = queue[0].size;
931 queue[0].reloc = p;
932 queue[0].size = size;
933 }
934
935 /* When an entry in the relocation queue is reused, the entry moves
936 to the front of the queue. */
937
938 static void
som_reloc_queue_fix(struct reloc_queue * queue,unsigned int idx)939 som_reloc_queue_fix (struct reloc_queue *queue, unsigned int idx)
940 {
941 if (idx == 0)
942 return;
943
944 if (idx == 1)
945 {
946 unsigned char *tmp1 = queue[0].reloc;
947 unsigned int tmp2 = queue[0].size;
948
949 queue[0].reloc = queue[1].reloc;
950 queue[0].size = queue[1].size;
951 queue[1].reloc = tmp1;
952 queue[1].size = tmp2;
953 return;
954 }
955
956 if (idx == 2)
957 {
958 unsigned char *tmp1 = queue[0].reloc;
959 unsigned int tmp2 = queue[0].size;
960
961 queue[0].reloc = queue[2].reloc;
962 queue[0].size = queue[2].size;
963 queue[2].reloc = queue[1].reloc;
964 queue[2].size = queue[1].size;
965 queue[1].reloc = tmp1;
966 queue[1].size = tmp2;
967 return;
968 }
969
970 if (idx == 3)
971 {
972 unsigned char *tmp1 = queue[0].reloc;
973 unsigned int tmp2 = queue[0].size;
974
975 queue[0].reloc = queue[3].reloc;
976 queue[0].size = queue[3].size;
977 queue[3].reloc = queue[2].reloc;
978 queue[3].size = queue[2].size;
979 queue[2].reloc = queue[1].reloc;
980 queue[2].size = queue[1].size;
981 queue[1].reloc = tmp1;
982 queue[1].size = tmp2;
983 return;
984 }
985 abort ();
986 }
987
988 /* Search for a particular relocation in the relocation queue. */
989
990 static int
som_reloc_queue_find(unsigned char * p,unsigned int size,struct reloc_queue * queue)991 som_reloc_queue_find (unsigned char *p,
992 unsigned int size,
993 struct reloc_queue *queue)
994 {
995 if (queue[0].reloc && !memcmp (p, queue[0].reloc, size)
996 && size == queue[0].size)
997 return 0;
998 if (queue[1].reloc && !memcmp (p, queue[1].reloc, size)
999 && size == queue[1].size)
1000 return 1;
1001 if (queue[2].reloc && !memcmp (p, queue[2].reloc, size)
1002 && size == queue[2].size)
1003 return 2;
1004 if (queue[3].reloc && !memcmp (p, queue[3].reloc, size)
1005 && size == queue[3].size)
1006 return 3;
1007 return -1;
1008 }
1009
1010 static unsigned char *
try_prev_fixup(bfd * abfd ATTRIBUTE_UNUSED,unsigned int * subspace_reloc_sizep,unsigned char * p,unsigned int size,struct reloc_queue * queue)1011 try_prev_fixup (bfd *abfd ATTRIBUTE_UNUSED,
1012 unsigned int *subspace_reloc_sizep,
1013 unsigned char *p,
1014 unsigned int size,
1015 struct reloc_queue *queue)
1016 {
1017 int queue_index = som_reloc_queue_find (p, size, queue);
1018
1019 if (queue_index != -1)
1020 {
1021 /* Found this in a previous fixup. Undo the fixup we
1022 just built and use R_PREV_FIXUP instead. We saved
1023 a total of size - 1 bytes in the fixup stream. */
1024 bfd_put_8 (abfd, R_PREV_FIXUP + queue_index, p);
1025 p += 1;
1026 *subspace_reloc_sizep += 1;
1027 som_reloc_queue_fix (queue, queue_index);
1028 }
1029 else
1030 {
1031 som_reloc_queue_insert (p, size, queue);
1032 *subspace_reloc_sizep += size;
1033 p += size;
1034 }
1035 return p;
1036 }
1037
1038 /* Emit the proper R_NO_RELOCATION fixups to map the next SKIP
1039 bytes without any relocation. Update the size of the subspace
1040 relocation stream via SUBSPACE_RELOC_SIZE_P; also return the
1041 current pointer into the relocation stream. */
1042
1043 static unsigned char *
som_reloc_skip(bfd * abfd,unsigned int skip,unsigned char * p,unsigned int * subspace_reloc_sizep,struct reloc_queue * queue)1044 som_reloc_skip (bfd *abfd,
1045 unsigned int skip,
1046 unsigned char *p,
1047 unsigned int *subspace_reloc_sizep,
1048 struct reloc_queue *queue)
1049 {
1050 /* Use a 4 byte R_NO_RELOCATION entry with a maximal value
1051 then R_PREV_FIXUPs to get the difference down to a
1052 reasonable size. */
1053 if (skip >= 0x1000000)
1054 {
1055 skip -= 0x1000000;
1056 bfd_put_8 (abfd, R_NO_RELOCATION + 31, p);
1057 bfd_put_8 (abfd, 0xff, p + 1);
1058 bfd_put_16 (abfd, (bfd_vma) 0xffff, p + 2);
1059 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue);
1060 while (skip >= 0x1000000)
1061 {
1062 skip -= 0x1000000;
1063 bfd_put_8 (abfd, R_PREV_FIXUP, p);
1064 p++;
1065 *subspace_reloc_sizep += 1;
1066 /* No need to adjust queue here since we are repeating the
1067 most recent fixup. */
1068 }
1069 }
1070
1071 /* The difference must be less than 0x1000000. Use one
1072 more R_NO_RELOCATION entry to get to the right difference. */
1073 if ((skip & 3) == 0 && skip <= 0xc0000 && skip > 0)
1074 {
1075 /* Difference can be handled in a simple single-byte
1076 R_NO_RELOCATION entry. */
1077 if (skip <= 0x60)
1078 {
1079 bfd_put_8 (abfd, R_NO_RELOCATION + (skip >> 2) - 1, p);
1080 *subspace_reloc_sizep += 1;
1081 p++;
1082 }
1083 /* Handle it with a two byte R_NO_RELOCATION entry. */
1084 else if (skip <= 0x1000)
1085 {
1086 bfd_put_8 (abfd, R_NO_RELOCATION + 24 + (((skip >> 2) - 1) >> 8), p);
1087 bfd_put_8 (abfd, (skip >> 2) - 1, p + 1);
1088 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue);
1089 }
1090 /* Handle it with a three byte R_NO_RELOCATION entry. */
1091 else
1092 {
1093 bfd_put_8 (abfd, R_NO_RELOCATION + 28 + (((skip >> 2) - 1) >> 16), p);
1094 bfd_put_16 (abfd, (bfd_vma) (skip >> 2) - 1, p + 1);
1095 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue);
1096 }
1097 }
1098 /* Ugh. Punt and use a 4 byte entry. */
1099 else if (skip > 0)
1100 {
1101 bfd_put_8 (abfd, R_NO_RELOCATION + 31, p);
1102 bfd_put_8 (abfd, (skip - 1) >> 16, p + 1);
1103 bfd_put_16 (abfd, (bfd_vma) skip - 1, p + 2);
1104 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue);
1105 }
1106 return p;
1107 }
1108
1109 /* Emit the proper R_DATA_OVERRIDE fixups to handle a nonzero addend
1110 from a BFD relocation. Update the size of the subspace relocation
1111 stream via SUBSPACE_RELOC_SIZE_P; also return the current pointer
1112 into the relocation stream. */
1113
1114 static unsigned char *
som_reloc_addend(bfd * abfd,bfd_vma addend,unsigned char * p,unsigned int * subspace_reloc_sizep,struct reloc_queue * queue)1115 som_reloc_addend (bfd *abfd,
1116 bfd_vma addend,
1117 unsigned char *p,
1118 unsigned int *subspace_reloc_sizep,
1119 struct reloc_queue *queue)
1120 {
1121 if (addend + 0x80 < 0x100)
1122 {
1123 bfd_put_8 (abfd, R_DATA_OVERRIDE + 1, p);
1124 bfd_put_8 (abfd, addend, p + 1);
1125 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue);
1126 }
1127 else if (addend + 0x8000 < 0x10000)
1128 {
1129 bfd_put_8 (abfd, R_DATA_OVERRIDE + 2, p);
1130 bfd_put_16 (abfd, addend, p + 1);
1131 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue);
1132 }
1133 else if (addend + 0x800000 < 0x1000000)
1134 {
1135 bfd_put_8 (abfd, R_DATA_OVERRIDE + 3, p);
1136 bfd_put_8 (abfd, addend >> 16, p + 1);
1137 bfd_put_16 (abfd, addend, p + 2);
1138 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue);
1139 }
1140 else
1141 {
1142 bfd_put_8 (abfd, R_DATA_OVERRIDE + 4, p);
1143 bfd_put_32 (abfd, addend, p + 1);
1144 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 5, queue);
1145 }
1146 return p;
1147 }
1148
1149 /* Handle a single function call relocation. */
1150
1151 static unsigned char *
som_reloc_call(bfd * abfd,unsigned char * p,unsigned int * subspace_reloc_sizep,arelent * bfd_reloc,int sym_num,struct reloc_queue * queue)1152 som_reloc_call (bfd *abfd,
1153 unsigned char *p,
1154 unsigned int *subspace_reloc_sizep,
1155 arelent *bfd_reloc,
1156 int sym_num,
1157 struct reloc_queue *queue)
1158 {
1159 int arg_bits = HPPA_R_ARG_RELOC (bfd_reloc->addend);
1160 int rtn_bits = arg_bits & 0x3;
1161 int type, done = 0;
1162
1163 /* You'll never believe all this is necessary to handle relocations
1164 for function calls. Having to compute and pack the argument
1165 relocation bits is the real nightmare.
1166
1167 If you're interested in how this works, just forget it. You really
1168 do not want to know about this braindamage. */
1169
1170 /* First see if this can be done with a "simple" relocation. Simple
1171 relocations have a symbol number < 0x100 and have simple encodings
1172 of argument relocations. */
1173
1174 if (sym_num < 0x100)
1175 {
1176 switch (arg_bits)
1177 {
1178 case 0:
1179 case 1:
1180 type = 0;
1181 break;
1182 case 1 << 8:
1183 case 1 << 8 | 1:
1184 type = 1;
1185 break;
1186 case 1 << 8 | 1 << 6:
1187 case 1 << 8 | 1 << 6 | 1:
1188 type = 2;
1189 break;
1190 case 1 << 8 | 1 << 6 | 1 << 4:
1191 case 1 << 8 | 1 << 6 | 1 << 4 | 1:
1192 type = 3;
1193 break;
1194 case 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2:
1195 case 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2 | 1:
1196 type = 4;
1197 break;
1198 default:
1199 /* Not one of the easy encodings. This will have to be
1200 handled by the more complex code below. */
1201 type = -1;
1202 break;
1203 }
1204 if (type != -1)
1205 {
1206 /* Account for the return value too. */
1207 if (rtn_bits)
1208 type += 5;
1209
1210 /* Emit a 2 byte relocation. Then see if it can be handled
1211 with a relocation which is already in the relocation queue. */
1212 bfd_put_8 (abfd, bfd_reloc->howto->type + type, p);
1213 bfd_put_8 (abfd, sym_num, p + 1);
1214 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue);
1215 done = 1;
1216 }
1217 }
1218
1219 /* If this could not be handled with a simple relocation, then do a hard
1220 one. Hard relocations occur if the symbol number was too high or if
1221 the encoding of argument relocation bits is too complex. */
1222 if (! done)
1223 {
1224 /* Don't ask about these magic sequences. I took them straight
1225 from gas-1.36 which took them from the a.out man page. */
1226 type = rtn_bits;
1227 if ((arg_bits >> 6 & 0xf) == 0xe)
1228 type += 9 * 40;
1229 else
1230 type += (3 * (arg_bits >> 8 & 3) + (arg_bits >> 6 & 3)) * 40;
1231 if ((arg_bits >> 2 & 0xf) == 0xe)
1232 type += 9 * 4;
1233 else
1234 type += (3 * (arg_bits >> 4 & 3) + (arg_bits >> 2 & 3)) * 4;
1235
1236 /* Output the first two bytes of the relocation. These describe
1237 the length of the relocation and encoding style. */
1238 bfd_put_8 (abfd, bfd_reloc->howto->type + 10
1239 + 2 * (sym_num >= 0x100) + (type >= 0x100),
1240 p);
1241 bfd_put_8 (abfd, type, p + 1);
1242
1243 /* Now output the symbol index and see if this bizarre relocation
1244 just happened to be in the relocation queue. */
1245 if (sym_num < 0x100)
1246 {
1247 bfd_put_8 (abfd, sym_num, p + 2);
1248 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue);
1249 }
1250 else
1251 {
1252 bfd_put_8 (abfd, sym_num >> 16, p + 2);
1253 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 3);
1254 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 5, queue);
1255 }
1256 }
1257 return p;
1258 }
1259
1260 /* Return the logarithm of X, base 2, considering X unsigned,
1261 if X is a power of 2. Otherwise, returns -1. */
1262
1263 static int
exact_log2(unsigned int x)1264 exact_log2 (unsigned int x)
1265 {
1266 int log = 0;
1267
1268 /* Test for 0 or a power of 2. */
1269 if (x == 0 || x != (x & -x))
1270 return -1;
1271
1272 while ((x >>= 1) != 0)
1273 log++;
1274 return log;
1275 }
1276
1277 static bfd_reloc_status_type
hppa_som_reloc(bfd * abfd ATTRIBUTE_UNUSED,arelent * reloc_entry,asymbol * symbol_in ATTRIBUTE_UNUSED,void * data ATTRIBUTE_UNUSED,asection * input_section,bfd * output_bfd,char ** error_message ATTRIBUTE_UNUSED)1278 hppa_som_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1279 arelent *reloc_entry,
1280 asymbol *symbol_in ATTRIBUTE_UNUSED,
1281 void *data ATTRIBUTE_UNUSED,
1282 asection *input_section,
1283 bfd *output_bfd,
1284 char **error_message ATTRIBUTE_UNUSED)
1285 {
1286 if (output_bfd)
1287 reloc_entry->address += input_section->output_offset;
1288
1289 return bfd_reloc_ok;
1290 }
1291
1292 /* Given a generic HPPA relocation type, the instruction format,
1293 and a field selector, return one or more appropriate SOM relocations. */
1294
1295 int **
hppa_som_gen_reloc_type(bfd * abfd,int base_type,int format,enum hppa_reloc_field_selector_type_alt field,int sym_diff,asymbol * sym)1296 hppa_som_gen_reloc_type (bfd *abfd,
1297 int base_type,
1298 int format,
1299 enum hppa_reloc_field_selector_type_alt field,
1300 int sym_diff,
1301 asymbol *sym)
1302 {
1303 int *final_type, **final_types;
1304
1305 final_types = bfd_alloc (abfd, (bfd_size_type) sizeof (int *) * 6);
1306 final_type = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1307 if (!final_types || !final_type)
1308 return NULL;
1309
1310 /* The field selector may require additional relocations to be
1311 generated. It's impossible to know at this moment if additional
1312 relocations will be needed, so we make them. The code to actually
1313 write the relocation/fixup stream is responsible for removing
1314 any redundant relocations. */
1315 switch (field)
1316 {
1317 case e_fsel:
1318 case e_psel:
1319 case e_lpsel:
1320 case e_rpsel:
1321 final_types[0] = final_type;
1322 final_types[1] = NULL;
1323 final_types[2] = NULL;
1324 *final_type = base_type;
1325 break;
1326
1327 case e_tsel:
1328 case e_ltsel:
1329 case e_rtsel:
1330 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1331 if (!final_types[0])
1332 return NULL;
1333 if (field == e_tsel)
1334 *final_types[0] = R_FSEL;
1335 else if (field == e_ltsel)
1336 *final_types[0] = R_LSEL;
1337 else
1338 *final_types[0] = R_RSEL;
1339 final_types[1] = final_type;
1340 final_types[2] = NULL;
1341 *final_type = base_type;
1342 break;
1343
1344 case e_lssel:
1345 case e_rssel:
1346 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1347 if (!final_types[0])
1348 return NULL;
1349 *final_types[0] = R_S_MODE;
1350 final_types[1] = final_type;
1351 final_types[2] = NULL;
1352 *final_type = base_type;
1353 break;
1354
1355 case e_lsel:
1356 case e_rsel:
1357 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1358 if (!final_types[0])
1359 return NULL;
1360 *final_types[0] = R_N_MODE;
1361 final_types[1] = final_type;
1362 final_types[2] = NULL;
1363 *final_type = base_type;
1364 break;
1365
1366 case e_ldsel:
1367 case e_rdsel:
1368 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1369 if (!final_types[0])
1370 return NULL;
1371 *final_types[0] = R_D_MODE;
1372 final_types[1] = final_type;
1373 final_types[2] = NULL;
1374 *final_type = base_type;
1375 break;
1376
1377 case e_lrsel:
1378 case e_rrsel:
1379 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1380 if (!final_types[0])
1381 return NULL;
1382 *final_types[0] = R_R_MODE;
1383 final_types[1] = final_type;
1384 final_types[2] = NULL;
1385 *final_type = base_type;
1386 break;
1387
1388 case e_nsel:
1389 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1390 if (!final_types[0])
1391 return NULL;
1392 *final_types[0] = R_N1SEL;
1393 final_types[1] = final_type;
1394 final_types[2] = NULL;
1395 *final_type = base_type;
1396 break;
1397
1398 case e_nlsel:
1399 case e_nlrsel:
1400 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1401 if (!final_types[0])
1402 return NULL;
1403 *final_types[0] = R_N0SEL;
1404 final_types[1] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1405 if (!final_types[1])
1406 return NULL;
1407 if (field == e_nlsel)
1408 *final_types[1] = R_N_MODE;
1409 else
1410 *final_types[1] = R_R_MODE;
1411 final_types[2] = final_type;
1412 final_types[3] = NULL;
1413 *final_type = base_type;
1414 break;
1415
1416 /* FIXME: These two field selectors are not currently supported. */
1417 case e_ltpsel:
1418 case e_rtpsel:
1419 abort ();
1420 }
1421
1422 switch (base_type)
1423 {
1424 case R_HPPA:
1425 /* The difference of two symbols needs *very* special handling. */
1426 if (sym_diff)
1427 {
1428 bfd_size_type amt = sizeof (int);
1429
1430 final_types[0] = bfd_alloc (abfd, amt);
1431 final_types[1] = bfd_alloc (abfd, amt);
1432 final_types[2] = bfd_alloc (abfd, amt);
1433 final_types[3] = bfd_alloc (abfd, amt);
1434 if (!final_types[0] || !final_types[1] || !final_types[2])
1435 return NULL;
1436 if (field == e_fsel)
1437 *final_types[0] = R_FSEL;
1438 else if (field == e_rsel)
1439 *final_types[0] = R_RSEL;
1440 else if (field == e_lsel)
1441 *final_types[0] = R_LSEL;
1442 *final_types[1] = R_COMP2;
1443 *final_types[2] = R_COMP2;
1444 *final_types[3] = R_COMP1;
1445 final_types[4] = final_type;
1446 if (format == 32)
1447 *final_types[4] = R_DATA_EXPR;
1448 else
1449 *final_types[4] = R_CODE_EXPR;
1450 final_types[5] = NULL;
1451 break;
1452 }
1453 /* PLABELs get their own relocation type. */
1454 else if (field == e_psel
1455 || field == e_lpsel
1456 || field == e_rpsel)
1457 {
1458 /* A PLABEL relocation that has a size of 32 bits must
1459 be a R_DATA_PLABEL. All others are R_CODE_PLABELs. */
1460 if (format == 32)
1461 *final_type = R_DATA_PLABEL;
1462 else
1463 *final_type = R_CODE_PLABEL;
1464 }
1465 /* PIC stuff. */
1466 else if (field == e_tsel
1467 || field == e_ltsel
1468 || field == e_rtsel)
1469 *final_type = R_DLT_REL;
1470 /* A relocation in the data space is always a full 32bits. */
1471 else if (format == 32)
1472 {
1473 *final_type = R_DATA_ONE_SYMBOL;
1474
1475 /* If there's no SOM symbol type associated with this BFD
1476 symbol, then set the symbol type to ST_DATA.
1477
1478 Only do this if the type is going to default later when
1479 we write the object file.
1480
1481 This is done so that the linker never encounters an
1482 R_DATA_ONE_SYMBOL reloc involving an ST_CODE symbol.
1483
1484 This allows the compiler to generate exception handling
1485 tables.
1486
1487 Note that one day we may need to also emit BEGIN_BRTAB and
1488 END_BRTAB to prevent the linker from optimizing away insns
1489 in exception handling regions. */
1490 if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN
1491 && (sym->flags & BSF_SECTION_SYM) == 0
1492 && (sym->flags & BSF_FUNCTION) == 0
1493 && ! bfd_is_com_section (sym->section))
1494 som_symbol_data (sym)->som_type = SYMBOL_TYPE_DATA;
1495 }
1496 break;
1497
1498 case R_HPPA_GOTOFF:
1499 /* More PLABEL special cases. */
1500 if (field == e_psel
1501 || field == e_lpsel
1502 || field == e_rpsel)
1503 *final_type = R_DATA_PLABEL;
1504 else if (field == e_fsel && format == 32)
1505 *final_type = R_DATA_GPREL;
1506 break;
1507
1508 case R_HPPA_COMPLEX:
1509 /* The difference of two symbols needs *very* special handling. */
1510 if (sym_diff)
1511 {
1512 bfd_size_type amt = sizeof (int);
1513
1514 final_types[0] = bfd_alloc (abfd, amt);
1515 final_types[1] = bfd_alloc (abfd, amt);
1516 final_types[2] = bfd_alloc (abfd, amt);
1517 final_types[3] = bfd_alloc (abfd, amt);
1518 if (!final_types[0] || !final_types[1] || !final_types[2])
1519 return NULL;
1520 if (field == e_fsel)
1521 *final_types[0] = R_FSEL;
1522 else if (field == e_rsel)
1523 *final_types[0] = R_RSEL;
1524 else if (field == e_lsel)
1525 *final_types[0] = R_LSEL;
1526 *final_types[1] = R_COMP2;
1527 *final_types[2] = R_COMP2;
1528 *final_types[3] = R_COMP1;
1529 final_types[4] = final_type;
1530 if (format == 32)
1531 *final_types[4] = R_DATA_EXPR;
1532 else
1533 *final_types[4] = R_CODE_EXPR;
1534 final_types[5] = NULL;
1535 break;
1536 }
1537 else
1538 break;
1539
1540 case R_HPPA_NONE:
1541 case R_HPPA_ABS_CALL:
1542 /* Right now we can default all these. */
1543 break;
1544
1545 case R_HPPA_PCREL_CALL:
1546 {
1547 #ifndef NO_PCREL_MODES
1548 /* If we have short and long pcrel modes, then generate the proper
1549 mode selector, then the pcrel relocation. Redundant selectors
1550 will be eliminated as the relocs are sized and emitted. */
1551 bfd_size_type amt = sizeof (int);
1552
1553 final_types[0] = bfd_alloc (abfd, amt);
1554 if (!final_types[0])
1555 return NULL;
1556 if (format == 17)
1557 *final_types[0] = R_SHORT_PCREL_MODE;
1558 else
1559 *final_types[0] = R_LONG_PCREL_MODE;
1560 final_types[1] = final_type;
1561 final_types[2] = NULL;
1562 *final_type = base_type;
1563 #endif
1564 break;
1565 }
1566 }
1567 return final_types;
1568 }
1569
1570 /* Return the address of the correct entry in the PA SOM relocation
1571 howto table. */
1572
1573 static reloc_howto_type *
som_bfd_reloc_type_lookup(bfd * abfd ATTRIBUTE_UNUSED,bfd_reloc_code_real_type code)1574 som_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1575 bfd_reloc_code_real_type code)
1576 {
1577 if ((int) code < (int) R_NO_RELOCATION + 255)
1578 {
1579 BFD_ASSERT ((int) som_hppa_howto_table[(int) code].type == (int) code);
1580 return &som_hppa_howto_table[(int) code];
1581 }
1582
1583 return NULL;
1584 }
1585
1586 static reloc_howto_type *
som_bfd_reloc_name_lookup(bfd * abfd ATTRIBUTE_UNUSED,const char * r_name)1587 som_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1588 const char *r_name)
1589 {
1590 unsigned int i;
1591
1592 for (i = 0;
1593 i < sizeof (som_hppa_howto_table) / sizeof (som_hppa_howto_table[0]);
1594 i++)
1595 if (som_hppa_howto_table[i].name != NULL
1596 && strcasecmp (som_hppa_howto_table[i].name, r_name) == 0)
1597 return &som_hppa_howto_table[i];
1598
1599 return NULL;
1600 }
1601
1602 static void
som_swap_clock_in(struct som_external_clock * src,struct som_clock * dst)1603 som_swap_clock_in (struct som_external_clock *src,
1604 struct som_clock *dst)
1605 {
1606 dst->secs = bfd_getb32 (src->secs);
1607 dst->nanosecs = bfd_getb32 (src->nanosecs);
1608 }
1609
1610 static void
som_swap_clock_out(struct som_clock * src,struct som_external_clock * dst)1611 som_swap_clock_out (struct som_clock *src,
1612 struct som_external_clock *dst)
1613 {
1614 bfd_putb32 (src->secs, dst->secs);
1615 bfd_putb32 (src->nanosecs, dst->nanosecs);
1616 }
1617
1618 static void
som_swap_header_in(struct som_external_header * src,struct som_header * dst)1619 som_swap_header_in (struct som_external_header *src,
1620 struct som_header *dst)
1621 {
1622 dst->system_id = bfd_getb16 (src->system_id);
1623 dst->a_magic = bfd_getb16 (src->a_magic);
1624 dst->version_id = bfd_getb32 (src->version_id);
1625 som_swap_clock_in (&src->file_time, &dst->file_time);
1626 dst->entry_space = bfd_getb32 (src->entry_space);
1627 dst->entry_subspace = bfd_getb32 (src->entry_subspace);
1628 dst->entry_offset = bfd_getb32 (src->entry_offset);
1629 dst->aux_header_location = bfd_getb32 (src->aux_header_location);
1630 dst->aux_header_size = bfd_getb32 (src->aux_header_size);
1631 dst->som_length = bfd_getb32 (src->som_length);
1632 dst->presumed_dp = bfd_getb32 (src->presumed_dp);
1633 dst->space_location = bfd_getb32 (src->space_location);
1634 dst->space_total = bfd_getb32 (src->space_total);
1635 dst->subspace_location = bfd_getb32 (src->subspace_location);
1636 dst->subspace_total = bfd_getb32 (src->subspace_total);
1637 dst->loader_fixup_location = bfd_getb32 (src->loader_fixup_location);
1638 dst->loader_fixup_total = bfd_getb32 (src->loader_fixup_total);
1639 dst->space_strings_location = bfd_getb32 (src->space_strings_location);
1640 dst->space_strings_size = bfd_getb32 (src->space_strings_size);
1641 dst->init_array_location = bfd_getb32 (src->init_array_location);
1642 dst->init_array_total = bfd_getb32 (src->init_array_total);
1643 dst->compiler_location = bfd_getb32 (src->compiler_location);
1644 dst->compiler_total = bfd_getb32 (src->compiler_total);
1645 dst->symbol_location = bfd_getb32 (src->symbol_location);
1646 dst->symbol_total = bfd_getb32 (src->symbol_total);
1647 dst->fixup_request_location = bfd_getb32 (src->fixup_request_location);
1648 dst->fixup_request_total = bfd_getb32 (src->fixup_request_total);
1649 dst->symbol_strings_location = bfd_getb32 (src->symbol_strings_location);
1650 dst->symbol_strings_size = bfd_getb32 (src->symbol_strings_size);
1651 dst->unloadable_sp_location = bfd_getb32 (src->unloadable_sp_location);
1652 dst->unloadable_sp_size = bfd_getb32 (src->unloadable_sp_size);
1653 dst->checksum = bfd_getb32 (src->checksum);
1654 }
1655
1656 static void
som_swap_header_out(struct som_header * src,struct som_external_header * dst)1657 som_swap_header_out (struct som_header *src,
1658 struct som_external_header *dst)
1659 {
1660 bfd_putb16 (src->system_id, dst->system_id);
1661 bfd_putb16 (src->a_magic, dst->a_magic);
1662 bfd_putb32 (src->version_id, dst->version_id);
1663 som_swap_clock_out (&src->file_time, &dst->file_time);
1664 bfd_putb32 (src->entry_space, dst->entry_space);
1665 bfd_putb32 (src->entry_subspace, dst->entry_subspace);
1666 bfd_putb32 (src->entry_offset, dst->entry_offset);
1667 bfd_putb32 (src->aux_header_location, dst->aux_header_location);
1668 bfd_putb32 (src->aux_header_size, dst->aux_header_size);
1669 bfd_putb32 (src->som_length, dst->som_length);
1670 bfd_putb32 (src->presumed_dp, dst->presumed_dp);
1671 bfd_putb32 (src->space_location, dst->space_location);
1672 bfd_putb32 (src->space_total, dst->space_total);
1673 bfd_putb32 (src->subspace_location, dst->subspace_location);
1674 bfd_putb32 (src->subspace_total, dst->subspace_total);
1675 bfd_putb32 (src->loader_fixup_location, dst->loader_fixup_location);
1676 bfd_putb32 (src->loader_fixup_total, dst->loader_fixup_total);
1677 bfd_putb32 (src->space_strings_location, dst->space_strings_location);
1678 bfd_putb32 (src->space_strings_size, dst->space_strings_size);
1679 bfd_putb32 (src->init_array_location, dst->init_array_location);
1680 bfd_putb32 (src->init_array_total, dst->init_array_total);
1681 bfd_putb32 (src->compiler_location, dst->compiler_location);
1682 bfd_putb32 (src->compiler_total, dst->compiler_total);
1683 bfd_putb32 (src->symbol_location, dst->symbol_location);
1684 bfd_putb32 (src->symbol_total, dst->symbol_total);
1685 bfd_putb32 (src->fixup_request_location, dst->fixup_request_location);
1686 bfd_putb32 (src->fixup_request_total, dst->fixup_request_total);
1687 bfd_putb32 (src->symbol_strings_location, dst->symbol_strings_location);
1688 bfd_putb32 (src->symbol_strings_size, dst->symbol_strings_size);
1689 bfd_putb32 (src->unloadable_sp_location, dst->unloadable_sp_location);
1690 bfd_putb32 (src->unloadable_sp_size, dst->unloadable_sp_size);
1691 bfd_putb32 (src->checksum, dst->checksum);
1692 }
1693
1694 static void
som_swap_space_dictionary_in(struct som_external_space_dictionary_record * src,struct som_space_dictionary_record * dst)1695 som_swap_space_dictionary_in (struct som_external_space_dictionary_record *src,
1696 struct som_space_dictionary_record *dst)
1697 {
1698 unsigned int flags;
1699
1700 dst->name = bfd_getb32 (src->name);
1701 flags = bfd_getb32 (src->flags);
1702 dst->is_loadable = (flags & SOM_SPACE_IS_LOADABLE) != 0;
1703 dst->is_defined = (flags & SOM_SPACE_IS_DEFINED) != 0;
1704 dst->is_private = (flags & SOM_SPACE_IS_PRIVATE) != 0;
1705 dst->has_intermediate_code = (flags & SOM_SPACE_HAS_INTERMEDIATE_CODE) != 0;
1706 dst->is_tspecific = (flags & SOM_SPACE_IS_TSPECIFIC) != 0;
1707 dst->reserved = 0;
1708 dst->sort_key = (flags >> SOM_SPACE_SORT_KEY_SH) & SOM_SPACE_SORT_KEY_MASK;
1709 dst->reserved2 = 0;
1710 dst->space_number = bfd_getb32 (src->space_number);
1711 dst->subspace_index = bfd_getb32 (src->subspace_index);
1712 dst->subspace_quantity = bfd_getb32 (src->subspace_quantity);
1713 dst->loader_fix_index = bfd_getb32 (src->loader_fix_index);
1714 dst->loader_fix_quantity = bfd_getb32 (src->loader_fix_quantity);
1715 dst->init_pointer_index = bfd_getb32 (src->init_pointer_index);
1716 dst->init_pointer_quantity = bfd_getb32 (src->init_pointer_quantity);
1717 }
1718
1719 static void
som_swap_space_dictionary_out(struct som_space_dictionary_record * src,struct som_external_space_dictionary_record * dst)1720 som_swap_space_dictionary_out (struct som_space_dictionary_record *src,
1721 struct som_external_space_dictionary_record *dst)
1722 {
1723 unsigned int flags;
1724
1725 bfd_putb32 (src->name, dst->name);
1726
1727 flags = 0;
1728 if (src->is_loadable)
1729 flags |= SOM_SPACE_IS_LOADABLE;
1730 if (src->is_defined)
1731 flags |= SOM_SPACE_IS_DEFINED;
1732 if (src->is_private)
1733 flags |= SOM_SPACE_IS_PRIVATE;
1734 if (src->has_intermediate_code)
1735 flags |= SOM_SPACE_HAS_INTERMEDIATE_CODE;
1736 if (src->is_tspecific)
1737 flags |= SOM_SPACE_IS_TSPECIFIC;
1738 flags |= (src->sort_key & SOM_SPACE_SORT_KEY_MASK) << SOM_SPACE_SORT_KEY_SH;
1739 bfd_putb32 (flags, dst->flags);
1740 bfd_putb32 (src->space_number, dst->space_number);
1741 bfd_putb32 (src->subspace_index, dst->subspace_index);
1742 bfd_putb32 (src->subspace_quantity, dst->subspace_quantity);
1743 bfd_putb32 (src->loader_fix_index, dst->loader_fix_index);
1744 bfd_putb32 (src->loader_fix_quantity, dst->loader_fix_quantity);
1745 bfd_putb32 (src->init_pointer_index, dst->init_pointer_index);
1746 bfd_putb32 (src->init_pointer_quantity, dst->init_pointer_quantity);
1747 }
1748
1749 static void
som_swap_subspace_dictionary_in(struct som_external_subspace_dictionary_record * src,struct som_subspace_dictionary_record * dst)1750 som_swap_subspace_dictionary_in
1751 (struct som_external_subspace_dictionary_record *src,
1752 struct som_subspace_dictionary_record *dst)
1753 {
1754 unsigned int flags;
1755 dst->space_index = bfd_getb32 (src->space_index);
1756 flags = bfd_getb32 (src->flags);
1757 dst->access_control_bits = (flags >> SOM_SUBSPACE_ACCESS_CONTROL_BITS_SH)
1758 & SOM_SUBSPACE_ACCESS_CONTROL_BITS_MASK;
1759 dst->memory_resident = (flags & SOM_SUBSPACE_MEMORY_RESIDENT) != 0;
1760 dst->dup_common = (flags & SOM_SUBSPACE_DUP_COMMON) != 0;
1761 dst->is_common = (flags & SOM_SUBSPACE_IS_COMMON) != 0;
1762 dst->is_loadable = (flags & SOM_SUBSPACE_IS_LOADABLE) != 0;
1763 dst->quadrant = (flags >> SOM_SUBSPACE_QUADRANT_SH)
1764 & SOM_SUBSPACE_QUADRANT_MASK;
1765 dst->initially_frozen = (flags & SOM_SUBSPACE_INITIALLY_FROZEN) != 0;
1766 dst->is_first = (flags & SOM_SUBSPACE_IS_FIRST) != 0;
1767 dst->code_only = (flags & SOM_SUBSPACE_CODE_ONLY) != 0;
1768 dst->sort_key = (flags >> SOM_SUBSPACE_SORT_KEY_SH)
1769 & SOM_SUBSPACE_SORT_KEY_MASK;
1770 dst->replicate_init = (flags & SOM_SUBSPACE_REPLICATE_INIT) != 0;
1771 dst->continuation = (flags & SOM_SUBSPACE_CONTINUATION) != 0;
1772 dst->is_tspecific = (flags & SOM_SUBSPACE_IS_TSPECIFIC) != 0;
1773 dst->is_comdat = (flags & SOM_SUBSPACE_IS_COMDAT) != 0;
1774 dst->reserved = 0;
1775 dst->file_loc_init_value = bfd_getb32 (src->file_loc_init_value);
1776 dst->initialization_length = bfd_getb32 (src->initialization_length);
1777 dst->subspace_start = bfd_getb32 (src->subspace_start);
1778 dst->subspace_length = bfd_getb32 (src->subspace_length);
1779 dst->alignment = bfd_getb32 (src->alignment);
1780 dst->name = bfd_getb32 (src->name);
1781 dst->fixup_request_index = bfd_getb32 (src->fixup_request_index);
1782 dst->fixup_request_quantity = bfd_getb32 (src->fixup_request_quantity);
1783 }
1784
1785 static void
som_swap_subspace_dictionary_record_out(struct som_subspace_dictionary_record * src,struct som_external_subspace_dictionary_record * dst)1786 som_swap_subspace_dictionary_record_out
1787 (struct som_subspace_dictionary_record *src,
1788 struct som_external_subspace_dictionary_record *dst)
1789 {
1790 unsigned int flags;
1791
1792 bfd_putb32 (src->space_index, dst->space_index);
1793 flags = (src->access_control_bits & SOM_SUBSPACE_ACCESS_CONTROL_BITS_MASK)
1794 << SOM_SUBSPACE_ACCESS_CONTROL_BITS_SH;
1795 if (src->memory_resident)
1796 flags |= SOM_SUBSPACE_MEMORY_RESIDENT;
1797 if (src->dup_common)
1798 flags |= SOM_SUBSPACE_DUP_COMMON;
1799 if (src->is_common)
1800 flags |= SOM_SUBSPACE_IS_COMMON;
1801 if (src->is_loadable)
1802 flags |= SOM_SUBSPACE_IS_LOADABLE;
1803 flags |= (src->quadrant & SOM_SUBSPACE_QUADRANT_MASK)
1804 << SOM_SUBSPACE_QUADRANT_SH;
1805 if (src->initially_frozen)
1806 flags |= SOM_SUBSPACE_INITIALLY_FROZEN;
1807 if (src->is_first)
1808 flags |= SOM_SUBSPACE_IS_FIRST;
1809 if (src->code_only)
1810 flags |= SOM_SUBSPACE_CODE_ONLY;
1811 flags |= (src->sort_key & SOM_SUBSPACE_SORT_KEY_MASK)
1812 << SOM_SUBSPACE_SORT_KEY_SH;
1813 if (src->replicate_init)
1814 flags |= SOM_SUBSPACE_REPLICATE_INIT;
1815 if (src->continuation)
1816 flags |= SOM_SUBSPACE_CONTINUATION;
1817 if (src->is_tspecific)
1818 flags |= SOM_SUBSPACE_IS_TSPECIFIC;
1819 if (src->is_comdat)
1820 flags |= SOM_SUBSPACE_IS_COMDAT;
1821 bfd_putb32 (flags, dst->flags);
1822 bfd_putb32 (src->file_loc_init_value, dst->file_loc_init_value);
1823 bfd_putb32 (src->initialization_length, dst->initialization_length);
1824 bfd_putb32 (src->subspace_start, dst->subspace_start);
1825 bfd_putb32 (src->subspace_length, dst->subspace_length);
1826 bfd_putb32 (src->alignment, dst->alignment);
1827 bfd_putb32 (src->name, dst->name);
1828 bfd_putb32 (src->fixup_request_index, dst->fixup_request_index);
1829 bfd_putb32 (src->fixup_request_quantity, dst->fixup_request_quantity);
1830 }
1831
1832 static void
som_swap_aux_id_in(struct som_external_aux_id * src,struct som_aux_id * dst)1833 som_swap_aux_id_in (struct som_external_aux_id *src,
1834 struct som_aux_id *dst)
1835 {
1836 unsigned int flags = bfd_getb32 (src->flags);
1837
1838 dst->mandatory = (flags & SOM_AUX_ID_MANDATORY) != 0;
1839 dst->copy = (flags & SOM_AUX_ID_COPY) != 0;
1840 dst->append = (flags & SOM_AUX_ID_APPEND) != 0;
1841 dst->ignore = (flags & SOM_AUX_ID_IGNORE) != 0;
1842 dst->type = (flags >> SOM_AUX_ID_TYPE_SH) & SOM_AUX_ID_TYPE_MASK;
1843 dst->length = bfd_getb32 (src->length);
1844 }
1845
1846 static void
som_swap_aux_id_out(struct som_aux_id * src,struct som_external_aux_id * dst)1847 som_swap_aux_id_out (struct som_aux_id *src,
1848 struct som_external_aux_id *dst)
1849 {
1850 unsigned int flags = 0;
1851
1852 if (src->mandatory)
1853 flags |= SOM_AUX_ID_MANDATORY;
1854 if (src->copy)
1855 flags |= SOM_AUX_ID_COPY;
1856 if (src->append)
1857 flags |= SOM_AUX_ID_APPEND;
1858 if (src->ignore)
1859 flags |= SOM_AUX_ID_IGNORE;
1860 flags |= (src->type & SOM_AUX_ID_TYPE_MASK) << SOM_AUX_ID_TYPE_SH;
1861 bfd_putb32 (flags, dst->flags);
1862 bfd_putb32 (src->length, dst->length);
1863 }
1864
1865 static void
som_swap_string_auxhdr_out(struct som_string_auxhdr * src,struct som_external_string_auxhdr * dst)1866 som_swap_string_auxhdr_out (struct som_string_auxhdr *src,
1867 struct som_external_string_auxhdr *dst)
1868 {
1869 som_swap_aux_id_out (&src->header_id, &dst->header_id);
1870 bfd_putb32 (src->string_length, dst->string_length);
1871 }
1872
1873 static void
som_swap_compilation_unit_out(struct som_compilation_unit * src,struct som_external_compilation_unit * dst)1874 som_swap_compilation_unit_out (struct som_compilation_unit *src,
1875 struct som_external_compilation_unit *dst)
1876 {
1877 bfd_putb32 (src->name.strx, dst->name);
1878 bfd_putb32 (src->language_name.strx, dst->language_name);
1879 bfd_putb32 (src->product_id.strx, dst->product_id);
1880 bfd_putb32 (src->version_id.strx, dst->version_id);
1881 bfd_putb32 (src->flags, dst->flags);
1882 som_swap_clock_out (&src->compile_time, &dst->compile_time);
1883 som_swap_clock_out (&src->source_time, &dst->source_time);
1884 }
1885
1886 static void
som_swap_exec_auxhdr_in(struct som_external_exec_auxhdr * src,struct som_exec_auxhdr * dst)1887 som_swap_exec_auxhdr_in (struct som_external_exec_auxhdr *src,
1888 struct som_exec_auxhdr *dst)
1889 {
1890 som_swap_aux_id_in (&src->som_auxhdr, &dst->som_auxhdr);
1891 dst->exec_tsize = bfd_getb32 (src->exec_tsize);
1892 dst->exec_tmem = bfd_getb32 (src->exec_tmem);
1893 dst->exec_tfile = bfd_getb32 (src->exec_tfile);
1894 dst->exec_dsize = bfd_getb32 (src->exec_dsize);
1895 dst->exec_dmem = bfd_getb32 (src->exec_dmem);
1896 dst->exec_dfile = bfd_getb32 (src->exec_dfile);
1897 dst->exec_bsize = bfd_getb32 (src->exec_bsize);
1898 dst->exec_entry = bfd_getb32 (src->exec_entry);
1899 dst->exec_flags = bfd_getb32 (src->exec_flags);
1900 dst->exec_bfill = bfd_getb32 (src->exec_bfill);
1901 }
1902
1903 static void
som_swap_exec_auxhdr_out(struct som_exec_auxhdr * src,struct som_external_exec_auxhdr * dst)1904 som_swap_exec_auxhdr_out (struct som_exec_auxhdr *src,
1905 struct som_external_exec_auxhdr *dst)
1906 {
1907 som_swap_aux_id_out (&src->som_auxhdr, &dst->som_auxhdr);
1908 bfd_putb32 (src->exec_tsize, dst->exec_tsize);
1909 bfd_putb32 (src->exec_tmem, dst->exec_tmem);
1910 bfd_putb32 (src->exec_tfile, dst->exec_tfile);
1911 bfd_putb32 (src->exec_dsize, dst->exec_dsize);
1912 bfd_putb32 (src->exec_dmem, dst->exec_dmem);
1913 bfd_putb32 (src->exec_dfile, dst->exec_dfile);
1914 bfd_putb32 (src->exec_bsize, dst->exec_bsize);
1915 bfd_putb32 (src->exec_entry, dst->exec_entry);
1916 bfd_putb32 (src->exec_flags, dst->exec_flags);
1917 bfd_putb32 (src->exec_bfill, dst->exec_bfill);
1918 }
1919
1920 static void
som_swap_lst_header_in(struct som_external_lst_header * src,struct som_lst_header * dst)1921 som_swap_lst_header_in (struct som_external_lst_header *src,
1922 struct som_lst_header *dst)
1923 {
1924 dst->system_id = bfd_getb16 (src->system_id);
1925 dst->a_magic = bfd_getb16 (src->a_magic);
1926 dst->version_id = bfd_getb32 (src->version_id);
1927 som_swap_clock_in (&src->file_time, &dst->file_time);
1928 dst->hash_loc = bfd_getb32 (src->hash_loc);
1929 dst->hash_size = bfd_getb32 (src->hash_size);
1930 dst->module_count = bfd_getb32 (src->module_count);
1931 dst->module_limit = bfd_getb32 (src->module_limit);
1932 dst->dir_loc = bfd_getb32 (src->dir_loc);
1933 dst->export_loc = bfd_getb32 (src->export_loc);
1934 dst->export_count = bfd_getb32 (src->export_count);
1935 dst->import_loc = bfd_getb32 (src->import_loc);
1936 dst->aux_loc = bfd_getb32 (src->aux_loc);
1937 dst->aux_size = bfd_getb32 (src->aux_size);
1938 dst->string_loc = bfd_getb32 (src->string_loc);
1939 dst->string_size = bfd_getb32 (src->string_size);
1940 dst->free_list = bfd_getb32 (src->free_list);
1941 dst->file_end = bfd_getb32 (src->file_end);
1942 dst->checksum = bfd_getb32 (src->checksum);
1943 }
1944
1945 /* Perform some initialization for an object. Save results of this
1946 initialization in the BFD. */
1947
1948 static const bfd_target *
som_object_setup(bfd * abfd,struct som_header * file_hdrp,struct som_exec_auxhdr * aux_hdrp,unsigned long current_offset)1949 som_object_setup (bfd *abfd,
1950 struct som_header *file_hdrp,
1951 struct som_exec_auxhdr *aux_hdrp,
1952 unsigned long current_offset)
1953 {
1954 asection *section;
1955
1956 /* som_mkobject will set bfd_error if som_mkobject fails. */
1957 if (! som_mkobject (abfd))
1958 return NULL;
1959
1960 /* Set BFD flags based on what information is available in the SOM. */
1961 abfd->flags = BFD_NO_FLAGS;
1962 if (file_hdrp->symbol_total)
1963 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
1964
1965 switch (file_hdrp->a_magic)
1966 {
1967 case DEMAND_MAGIC:
1968 abfd->flags |= (D_PAGED | WP_TEXT | EXEC_P);
1969 break;
1970 case SHARE_MAGIC:
1971 abfd->flags |= (WP_TEXT | EXEC_P);
1972 break;
1973 case EXEC_MAGIC:
1974 abfd->flags |= (EXEC_P);
1975 break;
1976 case RELOC_MAGIC:
1977 abfd->flags |= HAS_RELOC;
1978 break;
1979 #ifdef SHL_MAGIC
1980 case SHL_MAGIC:
1981 #endif
1982 #ifdef DL_MAGIC
1983 case DL_MAGIC:
1984 #endif
1985 abfd->flags |= DYNAMIC;
1986 break;
1987
1988 default:
1989 break;
1990 }
1991
1992 /* Save the auxiliary header. */
1993 obj_som_exec_hdr (abfd) = aux_hdrp;
1994
1995 /* Allocate space to hold the saved exec header information. */
1996 obj_som_exec_data (abfd) = bfd_zalloc (abfd, (bfd_size_type) sizeof (struct som_exec_data));
1997 if (obj_som_exec_data (abfd) == NULL)
1998 return NULL;
1999
2000 /* The braindamaged OSF1 linker switched exec_flags and exec_entry!
2001
2002 We used to identify OSF1 binaries based on NEW_VERSION_ID, but
2003 apparently the latest HPUX linker is using NEW_VERSION_ID now.
2004
2005 It's about time, OSF has used the new id since at least 1992;
2006 HPUX didn't start till nearly 1995!.
2007
2008 The new approach examines the entry field for an executable. If
2009 it is not 4-byte aligned then it's not a proper code address and
2010 we guess it's really the executable flags. For a main program,
2011 we also consider zero to be indicative of a buggy linker, since
2012 that is not a valid entry point. The entry point for a shared
2013 library, however, can be zero so we do not consider that to be
2014 indicative of a buggy linker. */
2015 if (aux_hdrp)
2016 {
2017 int found = 0;
2018
2019 for (section = abfd->sections; section; section = section->next)
2020 {
2021 bfd_vma entry;
2022
2023 if ((section->flags & SEC_CODE) == 0)
2024 continue;
2025 entry = aux_hdrp->exec_entry + aux_hdrp->exec_tmem;
2026 if (entry >= section->vma
2027 && entry < section->vma + section->size)
2028 found = 1;
2029 }
2030 if ((aux_hdrp->exec_entry == 0 && !(abfd->flags & DYNAMIC))
2031 || (aux_hdrp->exec_entry & 0x3) != 0
2032 || ! found)
2033 {
2034 bfd_get_start_address (abfd) = aux_hdrp->exec_flags;
2035 obj_som_exec_data (abfd)->exec_flags = aux_hdrp->exec_entry;
2036 }
2037 else
2038 {
2039 bfd_get_start_address (abfd) = aux_hdrp->exec_entry + current_offset;
2040 obj_som_exec_data (abfd)->exec_flags = aux_hdrp->exec_flags;
2041 }
2042 }
2043
2044 obj_som_exec_data (abfd)->version_id = file_hdrp->version_id;
2045
2046 bfd_default_set_arch_mach (abfd, bfd_arch_hppa, pa10);
2047 bfd_get_symcount (abfd) = file_hdrp->symbol_total;
2048
2049 /* Initialize the saved symbol table and string table to NULL.
2050 Save important offsets and sizes from the SOM header into
2051 the BFD. */
2052 obj_som_stringtab (abfd) = NULL;
2053 obj_som_symtab (abfd) = NULL;
2054 obj_som_sorted_syms (abfd) = NULL;
2055 obj_som_stringtab_size (abfd) = file_hdrp->symbol_strings_size;
2056 obj_som_sym_filepos (abfd) = file_hdrp->symbol_location + current_offset;
2057 obj_som_str_filepos (abfd) = (file_hdrp->symbol_strings_location
2058 + current_offset);
2059 obj_som_reloc_filepos (abfd) = (file_hdrp->fixup_request_location
2060 + current_offset);
2061 obj_som_exec_data (abfd)->system_id = file_hdrp->system_id;
2062
2063 return abfd->xvec;
2064 }
2065
2066 /* Convert all of the space and subspace info into BFD sections. Each space
2067 contains a number of subspaces, which in turn describe the mapping between
2068 regions of the exec file, and the address space that the program runs in.
2069 BFD sections which correspond to spaces will overlap the sections for the
2070 associated subspaces. */
2071
2072 static bfd_boolean
setup_sections(bfd * abfd,struct som_header * file_hdr,unsigned long current_offset)2073 setup_sections (bfd *abfd,
2074 struct som_header *file_hdr,
2075 unsigned long current_offset)
2076 {
2077 char *space_strings;
2078 unsigned int space_index, i;
2079 unsigned int total_subspaces = 0;
2080 asection **subspace_sections = NULL;
2081 asection *section;
2082 bfd_size_type amt;
2083
2084 /* First, read in space names. */
2085 amt = file_hdr->space_strings_size;
2086 space_strings = bfd_malloc (amt + 1);
2087 if (space_strings == NULL && amt != 0)
2088 goto error_return;
2089
2090 if (bfd_seek (abfd, current_offset + file_hdr->space_strings_location,
2091 SEEK_SET) != 0)
2092 goto error_return;
2093 if (bfd_bread (space_strings, amt, abfd) != amt)
2094 goto error_return;
2095 /* Make sure that the string table is NUL terminated. */
2096 space_strings[amt] = 0;
2097
2098 /* Loop over all of the space dictionaries, building up sections. */
2099 for (space_index = 0; space_index < file_hdr->space_total; space_index++)
2100 {
2101 struct som_space_dictionary_record space;
2102 struct som_external_space_dictionary_record ext_space;
2103 char *space_name;
2104 struct som_external_subspace_dictionary_record ext_subspace;
2105 struct som_subspace_dictionary_record subspace, save_subspace;
2106 unsigned int subspace_index;
2107 asection *space_asect;
2108 bfd_size_type space_size = 0;
2109 char *newname;
2110
2111 /* Read the space dictionary element. */
2112 if (bfd_seek (abfd,
2113 (current_offset + file_hdr->space_location
2114 + space_index * sizeof (ext_space)),
2115 SEEK_SET) != 0)
2116 goto error_return;
2117 amt = sizeof ext_space;
2118 if (bfd_bread (&ext_space, amt, abfd) != amt)
2119 goto error_return;
2120
2121 som_swap_space_dictionary_in (&ext_space, &space);
2122
2123 /* Setup the space name string. */
2124 if (space.name >= file_hdr->space_strings_size)
2125 goto error_return;
2126
2127 space_name = space.name + space_strings;
2128
2129 /* Make a section out of it. */
2130 amt = strlen (space_name) + 1;
2131 newname = bfd_alloc (abfd, amt);
2132 if (!newname)
2133 goto error_return;
2134 strcpy (newname, space_name);
2135
2136 space_asect = bfd_make_section_anyway (abfd, newname);
2137 if (!space_asect)
2138 goto error_return;
2139
2140 if (space.is_loadable == 0)
2141 space_asect->flags |= SEC_DEBUGGING;
2142
2143 /* Set up all the attributes for the space. */
2144 if (! bfd_som_set_section_attributes (space_asect, space.is_defined,
2145 space.is_private, space.sort_key,
2146 space.space_number))
2147 goto error_return;
2148
2149 /* If the space has no subspaces, then we're done. */
2150 if (space.subspace_quantity == 0)
2151 continue;
2152
2153 /* Now, read in the first subspace for this space. */
2154 if (bfd_seek (abfd,
2155 (current_offset + file_hdr->subspace_location
2156 + space.subspace_index * sizeof ext_subspace),
2157 SEEK_SET) != 0)
2158 goto error_return;
2159 amt = sizeof ext_subspace;
2160 if (bfd_bread (&ext_subspace, amt, abfd) != amt)
2161 goto error_return;
2162 /* Seek back to the start of the subspaces for loop below. */
2163 if (bfd_seek (abfd,
2164 (current_offset + file_hdr->subspace_location
2165 + space.subspace_index * sizeof ext_subspace),
2166 SEEK_SET) != 0)
2167 goto error_return;
2168
2169 som_swap_subspace_dictionary_in (&ext_subspace, &subspace);
2170
2171 /* Setup the start address and file loc from the first subspace
2172 record. */
2173 space_asect->vma = subspace.subspace_start;
2174 space_asect->filepos = subspace.file_loc_init_value + current_offset;
2175 space_asect->alignment_power = exact_log2 (subspace.alignment);
2176 if (space_asect->alignment_power == (unsigned) -1)
2177 goto error_return;
2178
2179 /* Initialize save_subspace so we can reliably determine if this
2180 loop placed any useful values into it. */
2181 memset (&save_subspace, 0, sizeof (save_subspace));
2182
2183 /* Loop over the rest of the subspaces, building up more sections. */
2184 for (subspace_index = 0; subspace_index < space.subspace_quantity;
2185 subspace_index++)
2186 {
2187 asection *subspace_asect;
2188 char *subspace_name;
2189
2190 /* Read in the next subspace. */
2191 amt = sizeof ext_subspace;
2192 if (bfd_bread (&ext_subspace, amt, abfd) != amt)
2193 goto error_return;
2194
2195 som_swap_subspace_dictionary_in (&ext_subspace, &subspace);
2196
2197 /* Setup the subspace name string. */
2198 subspace_name = subspace.name + space_strings;
2199
2200 amt = strlen (subspace_name) + 1;
2201 newname = bfd_alloc (abfd, amt);
2202 if (!newname)
2203 goto error_return;
2204 strcpy (newname, subspace_name);
2205
2206 /* Make a section out of this subspace. */
2207 subspace_asect = bfd_make_section_anyway (abfd, newname);
2208 if (!subspace_asect)
2209 goto error_return;
2210
2211 /* Store private information about the section. */
2212 if (! bfd_som_set_subsection_attributes (subspace_asect, space_asect,
2213 subspace.access_control_bits,
2214 subspace.sort_key,
2215 subspace.quadrant,
2216 subspace.is_comdat,
2217 subspace.is_common,
2218 subspace.dup_common))
2219 goto error_return;
2220
2221 /* Keep an easy mapping between subspaces and sections.
2222 Note we do not necessarily read the subspaces in the
2223 same order in which they appear in the object file.
2224
2225 So to make the target index come out correctly, we
2226 store the location of the subspace header in target
2227 index, then sort using the location of the subspace
2228 header as the key. Then we can assign correct
2229 subspace indices. */
2230 total_subspaces++;
2231 subspace_asect->target_index = bfd_tell (abfd) - sizeof (subspace);
2232
2233 /* Set SEC_READONLY and SEC_CODE/SEC_DATA as specified
2234 by the access_control_bits in the subspace header. */
2235 switch (subspace.access_control_bits >> 4)
2236 {
2237 /* Readonly data. */
2238 case 0x0:
2239 subspace_asect->flags |= SEC_DATA | SEC_READONLY;
2240 break;
2241
2242 /* Normal data. */
2243 case 0x1:
2244 subspace_asect->flags |= SEC_DATA;
2245 break;
2246
2247 /* Readonly code and the gateways.
2248 Gateways have other attributes which do not map
2249 into anything BFD knows about. */
2250 case 0x2:
2251 case 0x4:
2252 case 0x5:
2253 case 0x6:
2254 case 0x7:
2255 subspace_asect->flags |= SEC_CODE | SEC_READONLY;
2256 break;
2257
2258 /* dynamic (writable) code. */
2259 case 0x3:
2260 subspace_asect->flags |= SEC_CODE;
2261 break;
2262 }
2263
2264 if (subspace.is_comdat || subspace.is_common || subspace.dup_common)
2265 subspace_asect->flags |= SEC_LINK_ONCE;
2266
2267 if (subspace.subspace_length > 0)
2268 subspace_asect->flags |= SEC_HAS_CONTENTS;
2269
2270 if (subspace.is_loadable)
2271 subspace_asect->flags |= SEC_ALLOC | SEC_LOAD;
2272 else
2273 subspace_asect->flags |= SEC_DEBUGGING;
2274
2275 if (subspace.code_only)
2276 subspace_asect->flags |= SEC_CODE;
2277
2278 /* Both file_loc_init_value and initialization_length will
2279 be zero for a BSS like subspace. */
2280 if (subspace.file_loc_init_value == 0
2281 && subspace.initialization_length == 0)
2282 subspace_asect->flags &= ~(SEC_DATA | SEC_LOAD | SEC_HAS_CONTENTS);
2283
2284 /* This subspace has relocations.
2285 The fixup_request_quantity is a byte count for the number of
2286 entries in the relocation stream; it is not the actual number
2287 of relocations in the subspace. */
2288 if (subspace.fixup_request_quantity != 0)
2289 {
2290 subspace_asect->flags |= SEC_RELOC;
2291 subspace_asect->rel_filepos = subspace.fixup_request_index;
2292 som_section_data (subspace_asect)->reloc_size
2293 = subspace.fixup_request_quantity;
2294 /* We can not determine this yet. When we read in the
2295 relocation table the correct value will be filled in. */
2296 subspace_asect->reloc_count = (unsigned) -1;
2297 }
2298
2299 /* Update save_subspace if appropriate. */
2300 if (subspace.file_loc_init_value > save_subspace.file_loc_init_value)
2301 save_subspace = subspace;
2302
2303 subspace_asect->vma = subspace.subspace_start;
2304 subspace_asect->size = subspace.subspace_length;
2305 subspace_asect->filepos = (subspace.file_loc_init_value
2306 + current_offset);
2307 subspace_asect->alignment_power = exact_log2 (subspace.alignment);
2308 if (subspace_asect->alignment_power == (unsigned) -1)
2309 goto error_return;
2310
2311 /* Keep track of the accumulated sizes of the sections. */
2312 space_size += subspace.subspace_length;
2313 }
2314
2315 /* This can happen for a .o which defines symbols in otherwise
2316 empty subspaces. */
2317 if (!save_subspace.file_loc_init_value)
2318 space_asect->size = 0;
2319 else
2320 {
2321 if (file_hdr->a_magic != RELOC_MAGIC)
2322 {
2323 /* Setup the size for the space section based upon the info
2324 in the last subspace of the space. */
2325 space_asect->size = (save_subspace.subspace_start
2326 - space_asect->vma
2327 + save_subspace.subspace_length);
2328 }
2329 else
2330 {
2331 /* The subspace_start field is not initialised in relocatable
2332 only objects, so it cannot be used for length calculations.
2333 Instead we use the space_size value which we have been
2334 accumulating. This isn't an accurate estimate since it
2335 ignores alignment and ordering issues. */
2336 space_asect->size = space_size;
2337 }
2338 }
2339 }
2340 /* Now that we've read in all the subspace records, we need to assign
2341 a target index to each subspace. */
2342 amt = total_subspaces;
2343 amt *= sizeof (asection *);
2344 subspace_sections = bfd_malloc (amt);
2345 if (subspace_sections == NULL)
2346 goto error_return;
2347
2348 for (i = 0, section = abfd->sections; section; section = section->next)
2349 {
2350 if (!som_is_subspace (section))
2351 continue;
2352
2353 subspace_sections[i] = section;
2354 i++;
2355 }
2356 qsort (subspace_sections, total_subspaces,
2357 sizeof (asection *), compare_subspaces);
2358
2359 /* subspace_sections is now sorted in the order in which the subspaces
2360 appear in the object file. Assign an index to each one now. */
2361 for (i = 0; i < total_subspaces; i++)
2362 subspace_sections[i]->target_index = i;
2363
2364 if (space_strings != NULL)
2365 free (space_strings);
2366
2367 if (subspace_sections != NULL)
2368 free (subspace_sections);
2369
2370 return TRUE;
2371
2372 error_return:
2373 if (space_strings != NULL)
2374 free (space_strings);
2375
2376 if (subspace_sections != NULL)
2377 free (subspace_sections);
2378 return FALSE;
2379 }
2380
2381
2382 /* Read in a SOM object and make it into a BFD. */
2383
2384 static const bfd_target *
som_object_p(bfd * abfd)2385 som_object_p (bfd *abfd)
2386 {
2387 struct som_external_header ext_file_hdr;
2388 struct som_header file_hdr;
2389 struct som_exec_auxhdr *aux_hdr_ptr = NULL;
2390 unsigned long current_offset = 0;
2391 struct som_external_lst_header ext_lst_header;
2392 struct som_external_som_entry ext_som_entry;
2393 bfd_size_type amt;
2394 unsigned int loc;
2395 #define ENTRY_SIZE sizeof (struct som_external_som_entry)
2396
2397 amt = sizeof (struct som_external_header);
2398 if (bfd_bread (&ext_file_hdr, amt, abfd) != amt)
2399 {
2400 if (bfd_get_error () != bfd_error_system_call)
2401 bfd_set_error (bfd_error_wrong_format);
2402 return NULL;
2403 }
2404
2405 som_swap_header_in (&ext_file_hdr, &file_hdr);
2406
2407 if (!_PA_RISC_ID (file_hdr.system_id))
2408 {
2409 bfd_set_error (bfd_error_wrong_format);
2410 return NULL;
2411 }
2412
2413 switch (file_hdr.a_magic)
2414 {
2415 case RELOC_MAGIC:
2416 case EXEC_MAGIC:
2417 case SHARE_MAGIC:
2418 case DEMAND_MAGIC:
2419 case DL_MAGIC:
2420 case SHL_MAGIC:
2421 #ifdef SHARED_MAGIC_CNX
2422 case SHARED_MAGIC_CNX:
2423 #endif
2424 break;
2425
2426 case EXECLIBMAGIC:
2427 /* Read the lst header and determine where the SOM directory begins. */
2428
2429 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
2430 {
2431 if (bfd_get_error () != bfd_error_system_call)
2432 bfd_set_error (bfd_error_wrong_format);
2433 return NULL;
2434 }
2435
2436 amt = sizeof (struct som_external_lst_header);
2437 if (bfd_bread (&ext_lst_header, amt, abfd) != amt)
2438 {
2439 if (bfd_get_error () != bfd_error_system_call)
2440 bfd_set_error (bfd_error_wrong_format);
2441 return NULL;
2442 }
2443
2444 /* Position to and read the first directory entry. */
2445 loc = bfd_getb32 (ext_lst_header.dir_loc);
2446 if (bfd_seek (abfd, loc, SEEK_SET) != 0)
2447 {
2448 if (bfd_get_error () != bfd_error_system_call)
2449 bfd_set_error (bfd_error_wrong_format);
2450 return NULL;
2451 }
2452
2453 amt = ENTRY_SIZE;
2454 if (bfd_bread (&ext_som_entry, amt, abfd) != amt)
2455 {
2456 if (bfd_get_error () != bfd_error_system_call)
2457 bfd_set_error (bfd_error_wrong_format);
2458 return NULL;
2459 }
2460
2461 /* Now position to the first SOM. */
2462 current_offset = bfd_getb32 (ext_som_entry.location);
2463 if (bfd_seek (abfd, current_offset, SEEK_SET) != 0)
2464 {
2465 if (bfd_get_error () != bfd_error_system_call)
2466 bfd_set_error (bfd_error_wrong_format);
2467 return NULL;
2468 }
2469
2470 /* And finally, re-read the som header. */
2471 amt = sizeof (struct som_external_header);
2472 if (bfd_bread (&ext_file_hdr, amt, abfd) != amt)
2473 {
2474 if (bfd_get_error () != bfd_error_system_call)
2475 bfd_set_error (bfd_error_wrong_format);
2476 return NULL;
2477 }
2478
2479 som_swap_header_in (&ext_file_hdr, &file_hdr);
2480
2481 break;
2482
2483 default:
2484 bfd_set_error (bfd_error_wrong_format);
2485 return NULL;
2486 }
2487
2488 if (file_hdr.version_id != OLD_VERSION_ID
2489 && file_hdr.version_id != NEW_VERSION_ID)
2490 {
2491 bfd_set_error (bfd_error_wrong_format);
2492 return NULL;
2493 }
2494
2495 /* If the aux_header_size field in the file header is zero, then this
2496 object is an incomplete executable (a .o file). Do not try to read
2497 a non-existant auxiliary header. */
2498 if (file_hdr.aux_header_size != 0)
2499 {
2500 struct som_external_exec_auxhdr ext_exec_auxhdr;
2501
2502 aux_hdr_ptr = bfd_zalloc (abfd,
2503 (bfd_size_type) sizeof (*aux_hdr_ptr));
2504 if (aux_hdr_ptr == NULL)
2505 return NULL;
2506 amt = sizeof (struct som_external_exec_auxhdr);
2507 if (bfd_bread (&ext_exec_auxhdr, amt, abfd) != amt)
2508 {
2509 if (bfd_get_error () != bfd_error_system_call)
2510 bfd_set_error (bfd_error_wrong_format);
2511 return NULL;
2512 }
2513 som_swap_exec_auxhdr_in (&ext_exec_auxhdr, aux_hdr_ptr);
2514 }
2515
2516 if (!setup_sections (abfd, &file_hdr, current_offset))
2517 {
2518 /* setup_sections does not bubble up a bfd error code. */
2519 bfd_set_error (bfd_error_bad_value);
2520 return NULL;
2521 }
2522
2523 /* This appears to be a valid SOM object. Do some initialization. */
2524 return som_object_setup (abfd, &file_hdr, aux_hdr_ptr, current_offset);
2525 }
2526
2527 /* Create a SOM object. */
2528
2529 static bfd_boolean
som_mkobject(bfd * abfd)2530 som_mkobject (bfd *abfd)
2531 {
2532 /* Allocate memory to hold backend information. */
2533 abfd->tdata.som_data = bfd_zalloc (abfd, (bfd_size_type) sizeof (struct som_data_struct));
2534 if (abfd->tdata.som_data == NULL)
2535 return FALSE;
2536 return TRUE;
2537 }
2538
2539 /* Initialize some information in the file header. This routine makes
2540 not attempt at doing the right thing for a full executable; it
2541 is only meant to handle relocatable objects. */
2542
2543 static bfd_boolean
som_prep_headers(bfd * abfd)2544 som_prep_headers (bfd *abfd)
2545 {
2546 struct som_header *file_hdr;
2547 asection *section;
2548 bfd_size_type amt = sizeof (struct som_header);
2549
2550 /* Make and attach a file header to the BFD. */
2551 file_hdr = bfd_zalloc (abfd, amt);
2552 if (file_hdr == NULL)
2553 return FALSE;
2554 obj_som_file_hdr (abfd) = file_hdr;
2555
2556 if (abfd->flags & (EXEC_P | DYNAMIC))
2557 {
2558 /* Make and attach an exec header to the BFD. */
2559 amt = sizeof (struct som_exec_auxhdr);
2560 obj_som_exec_hdr (abfd) = bfd_zalloc (abfd, amt);
2561 if (obj_som_exec_hdr (abfd) == NULL)
2562 return FALSE;
2563
2564 if (abfd->flags & D_PAGED)
2565 file_hdr->a_magic = DEMAND_MAGIC;
2566 else if (abfd->flags & WP_TEXT)
2567 file_hdr->a_magic = SHARE_MAGIC;
2568 #ifdef SHL_MAGIC
2569 else if (abfd->flags & DYNAMIC)
2570 file_hdr->a_magic = SHL_MAGIC;
2571 #endif
2572 else
2573 file_hdr->a_magic = EXEC_MAGIC;
2574 }
2575 else
2576 file_hdr->a_magic = RELOC_MAGIC;
2577
2578 /* These fields are optional, and embedding timestamps is not always
2579 a wise thing to do, it makes comparing objects during a multi-stage
2580 bootstrap difficult. */
2581 file_hdr->file_time.secs = 0;
2582 file_hdr->file_time.nanosecs = 0;
2583
2584 file_hdr->entry_space = 0;
2585 file_hdr->entry_subspace = 0;
2586 file_hdr->entry_offset = 0;
2587 file_hdr->presumed_dp = 0;
2588
2589 /* Now iterate over the sections translating information from
2590 BFD sections to SOM spaces/subspaces. */
2591 for (section = abfd->sections; section != NULL; section = section->next)
2592 {
2593 /* Ignore anything which has not been marked as a space or
2594 subspace. */
2595 if (!som_is_space (section) && !som_is_subspace (section))
2596 continue;
2597
2598 if (som_is_space (section))
2599 {
2600 /* Allocate space for the space dictionary. */
2601 amt = sizeof (struct som_space_dictionary_record);
2602 som_section_data (section)->space_dict = bfd_zalloc (abfd, amt);
2603 if (som_section_data (section)->space_dict == NULL)
2604 return FALSE;
2605 /* Set space attributes. Note most attributes of SOM spaces
2606 are set based on the subspaces it contains. */
2607 som_section_data (section)->space_dict->loader_fix_index = -1;
2608 som_section_data (section)->space_dict->init_pointer_index = -1;
2609
2610 /* Set more attributes that were stuffed away in private data. */
2611 som_section_data (section)->space_dict->sort_key =
2612 som_section_data (section)->copy_data->sort_key;
2613 som_section_data (section)->space_dict->is_defined =
2614 som_section_data (section)->copy_data->is_defined;
2615 som_section_data (section)->space_dict->is_private =
2616 som_section_data (section)->copy_data->is_private;
2617 som_section_data (section)->space_dict->space_number =
2618 som_section_data (section)->copy_data->space_number;
2619 }
2620 else
2621 {
2622 /* Allocate space for the subspace dictionary. */
2623 amt = sizeof (struct som_subspace_dictionary_record);
2624 som_section_data (section)->subspace_dict = bfd_zalloc (abfd, amt);
2625 if (som_section_data (section)->subspace_dict == NULL)
2626 return FALSE;
2627
2628 /* Set subspace attributes. Basic stuff is done here, additional
2629 attributes are filled in later as more information becomes
2630 available. */
2631 if (section->flags & SEC_ALLOC)
2632 som_section_data (section)->subspace_dict->is_loadable = 1;
2633
2634 if (section->flags & SEC_CODE)
2635 som_section_data (section)->subspace_dict->code_only = 1;
2636
2637 som_section_data (section)->subspace_dict->subspace_start =
2638 section->vma;
2639 som_section_data (section)->subspace_dict->subspace_length =
2640 section->size;
2641 som_section_data (section)->subspace_dict->initialization_length =
2642 section->size;
2643 som_section_data (section)->subspace_dict->alignment =
2644 1 << section->alignment_power;
2645
2646 /* Set more attributes that were stuffed away in private data. */
2647 som_section_data (section)->subspace_dict->sort_key =
2648 som_section_data (section)->copy_data->sort_key;
2649 som_section_data (section)->subspace_dict->access_control_bits =
2650 som_section_data (section)->copy_data->access_control_bits;
2651 som_section_data (section)->subspace_dict->quadrant =
2652 som_section_data (section)->copy_data->quadrant;
2653 som_section_data (section)->subspace_dict->is_comdat =
2654 som_section_data (section)->copy_data->is_comdat;
2655 som_section_data (section)->subspace_dict->is_common =
2656 som_section_data (section)->copy_data->is_common;
2657 som_section_data (section)->subspace_dict->dup_common =
2658 som_section_data (section)->copy_data->dup_common;
2659 }
2660 }
2661 return TRUE;
2662 }
2663
2664 /* Return TRUE if the given section is a SOM space, FALSE otherwise. */
2665
2666 static bfd_boolean
som_is_space(asection * section)2667 som_is_space (asection *section)
2668 {
2669 /* If no copy data is available, then it's neither a space nor a
2670 subspace. */
2671 if (som_section_data (section)->copy_data == NULL)
2672 return FALSE;
2673
2674 /* If the containing space isn't the same as the given section,
2675 then this isn't a space. */
2676 if (som_section_data (section)->copy_data->container != section
2677 && (som_section_data (section)->copy_data->container->output_section
2678 != section))
2679 return FALSE;
2680
2681 /* OK. Must be a space. */
2682 return TRUE;
2683 }
2684
2685 /* Return TRUE if the given section is a SOM subspace, FALSE otherwise. */
2686
2687 static bfd_boolean
som_is_subspace(asection * section)2688 som_is_subspace (asection *section)
2689 {
2690 /* If no copy data is available, then it's neither a space nor a
2691 subspace. */
2692 if (som_section_data (section)->copy_data == NULL)
2693 return FALSE;
2694
2695 /* If the containing space is the same as the given section,
2696 then this isn't a subspace. */
2697 if (som_section_data (section)->copy_data->container == section
2698 || (som_section_data (section)->copy_data->container->output_section
2699 == section))
2700 return FALSE;
2701
2702 /* OK. Must be a subspace. */
2703 return TRUE;
2704 }
2705
2706 /* Return TRUE if the given space contains the given subspace. It
2707 is safe to assume space really is a space, and subspace really
2708 is a subspace. */
2709
2710 static bfd_boolean
som_is_container(asection * space,asection * subspace)2711 som_is_container (asection *space, asection *subspace)
2712 {
2713 return (som_section_data (subspace)->copy_data->container == space)
2714 || (som_section_data (subspace)->copy_data->container->output_section
2715 == space);
2716 }
2717
2718 /* Count and return the number of spaces attached to the given BFD. */
2719
2720 static unsigned long
som_count_spaces(bfd * abfd)2721 som_count_spaces (bfd *abfd)
2722 {
2723 int count = 0;
2724 asection *section;
2725
2726 for (section = abfd->sections; section != NULL; section = section->next)
2727 count += som_is_space (section);
2728
2729 return count;
2730 }
2731
2732 /* Count the number of subspaces attached to the given BFD. */
2733
2734 static unsigned long
som_count_subspaces(bfd * abfd)2735 som_count_subspaces (bfd *abfd)
2736 {
2737 int count = 0;
2738 asection *section;
2739
2740 for (section = abfd->sections; section != NULL; section = section->next)
2741 count += som_is_subspace (section);
2742
2743 return count;
2744 }
2745
2746 /* Return -1, 0, 1 indicating the relative ordering of sym1 and sym2.
2747
2748 We desire symbols to be ordered starting with the symbol with the
2749 highest relocation count down to the symbol with the lowest relocation
2750 count. Doing so compacts the relocation stream. */
2751
2752 static int
compare_syms(const void * arg1,const void * arg2)2753 compare_syms (const void *arg1, const void *arg2)
2754 {
2755 asymbol **sym1 = (asymbol **) arg1;
2756 asymbol **sym2 = (asymbol **) arg2;
2757 unsigned int count1, count2;
2758
2759 /* Get relocation count for each symbol. Note that the count
2760 is stored in the udata pointer for section symbols! */
2761 if ((*sym1)->flags & BSF_SECTION_SYM)
2762 count1 = (*sym1)->udata.i;
2763 else
2764 count1 = som_symbol_data (*sym1)->reloc_count;
2765
2766 if ((*sym2)->flags & BSF_SECTION_SYM)
2767 count2 = (*sym2)->udata.i;
2768 else
2769 count2 = som_symbol_data (*sym2)->reloc_count;
2770
2771 /* Return the appropriate value. */
2772 if (count1 < count2)
2773 return 1;
2774 else if (count1 > count2)
2775 return -1;
2776 return 0;
2777 }
2778
2779 /* Return -1, 0, 1 indicating the relative ordering of subspace1
2780 and subspace. */
2781
2782 static int
compare_subspaces(const void * arg1,const void * arg2)2783 compare_subspaces (const void *arg1, const void *arg2)
2784 {
2785 asection **subspace1 = (asection **) arg1;
2786 asection **subspace2 = (asection **) arg2;
2787
2788 if ((*subspace1)->target_index < (*subspace2)->target_index)
2789 return -1;
2790 else if ((*subspace2)->target_index < (*subspace1)->target_index)
2791 return 1;
2792 else
2793 return 0;
2794 }
2795
2796 /* Perform various work in preparation for emitting the fixup stream. */
2797
2798 static void
som_prep_for_fixups(bfd * abfd,asymbol ** syms,unsigned long num_syms)2799 som_prep_for_fixups (bfd *abfd, asymbol **syms, unsigned long num_syms)
2800 {
2801 unsigned long i;
2802 asection *section;
2803 asymbol **sorted_syms;
2804 bfd_size_type amt;
2805
2806 /* Most SOM relocations involving a symbol have a length which is
2807 dependent on the index of the symbol. So symbols which are
2808 used often in relocations should have a small index. */
2809
2810 /* First initialize the counters for each symbol. */
2811 for (i = 0; i < num_syms; i++)
2812 {
2813 /* Handle a section symbol; these have no pointers back to the
2814 SOM symbol info. So we just use the udata field to hold the
2815 relocation count. */
2816 if (som_symbol_data (syms[i]) == NULL
2817 || syms[i]->flags & BSF_SECTION_SYM)
2818 {
2819 syms[i]->flags |= BSF_SECTION_SYM;
2820 syms[i]->udata.i = 0;
2821 }
2822 else
2823 som_symbol_data (syms[i])->reloc_count = 0;
2824 }
2825
2826 /* Now that the counters are initialized, make a weighted count
2827 of how often a given symbol is used in a relocation. */
2828 for (section = abfd->sections; section != NULL; section = section->next)
2829 {
2830 int j;
2831
2832 /* Does this section have any relocations? */
2833 if ((int) section->reloc_count <= 0)
2834 continue;
2835
2836 /* Walk through each relocation for this section. */
2837 for (j = 1; j < (int) section->reloc_count; j++)
2838 {
2839 arelent *reloc = section->orelocation[j];
2840 int scale;
2841
2842 /* A relocation against a symbol in the *ABS* section really
2843 does not have a symbol. Likewise if the symbol isn't associated
2844 with any section. */
2845 if (reloc->sym_ptr_ptr == NULL
2846 || bfd_is_abs_section ((*reloc->sym_ptr_ptr)->section))
2847 continue;
2848
2849 /* Scaling to encourage symbols involved in R_DP_RELATIVE
2850 and R_CODE_ONE_SYMBOL relocations to come first. These
2851 two relocations have single byte versions if the symbol
2852 index is very small. */
2853 if (reloc->howto->type == R_DP_RELATIVE
2854 || reloc->howto->type == R_CODE_ONE_SYMBOL)
2855 scale = 2;
2856 else
2857 scale = 1;
2858
2859 /* Handle section symbols by storing the count in the udata
2860 field. It will not be used and the count is very important
2861 for these symbols. */
2862 if ((*reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
2863 {
2864 (*reloc->sym_ptr_ptr)->udata.i =
2865 (*reloc->sym_ptr_ptr)->udata.i + scale;
2866 continue;
2867 }
2868
2869 /* A normal symbol. Increment the count. */
2870 som_symbol_data (*reloc->sym_ptr_ptr)->reloc_count += scale;
2871 }
2872 }
2873
2874 /* Sort a copy of the symbol table, rather than the canonical
2875 output symbol table. */
2876 amt = num_syms;
2877 amt *= sizeof (asymbol *);
2878 sorted_syms = bfd_zalloc (abfd, amt);
2879 memcpy (sorted_syms, syms, num_syms * sizeof (asymbol *));
2880 qsort (sorted_syms, num_syms, sizeof (asymbol *), compare_syms);
2881 obj_som_sorted_syms (abfd) = sorted_syms;
2882
2883 /* Compute the symbol indexes, they will be needed by the relocation
2884 code. */
2885 for (i = 0; i < num_syms; i++)
2886 {
2887 /* A section symbol. Again, there is no pointer to backend symbol
2888 information, so we reuse the udata field again. */
2889 if (sorted_syms[i]->flags & BSF_SECTION_SYM)
2890 sorted_syms[i]->udata.i = i;
2891 else
2892 som_symbol_data (sorted_syms[i])->index = i;
2893 }
2894 }
2895
2896 static bfd_boolean
som_write_fixups(bfd * abfd,unsigned long current_offset,unsigned int * total_reloc_sizep)2897 som_write_fixups (bfd *abfd,
2898 unsigned long current_offset,
2899 unsigned int *total_reloc_sizep)
2900 {
2901 unsigned int i, j;
2902 /* Chunk of memory that we can use as buffer space, then throw
2903 away. */
2904 unsigned char tmp_space[SOM_TMP_BUFSIZE];
2905 unsigned char *p;
2906 unsigned int total_reloc_size = 0;
2907 unsigned int subspace_reloc_size = 0;
2908 unsigned int num_spaces = obj_som_file_hdr (abfd)->space_total;
2909 asection *section = abfd->sections;
2910 bfd_size_type amt;
2911
2912 memset (tmp_space, 0, SOM_TMP_BUFSIZE);
2913 p = tmp_space;
2914
2915 /* All the fixups for a particular subspace are emitted in a single
2916 stream. All the subspaces for a particular space are emitted
2917 as a single stream.
2918
2919 So, to get all the locations correct one must iterate through all the
2920 spaces, for each space iterate through its subspaces and output a
2921 fixups stream. */
2922 for (i = 0; i < num_spaces; i++)
2923 {
2924 asection *subsection;
2925
2926 /* Find a space. */
2927 while (!som_is_space (section))
2928 section = section->next;
2929
2930 /* Now iterate through each of its subspaces. */
2931 for (subsection = abfd->sections;
2932 subsection != NULL;
2933 subsection = subsection->next)
2934 {
2935 int reloc_offset;
2936 unsigned int current_rounding_mode;
2937 #ifndef NO_PCREL_MODES
2938 unsigned int current_call_mode;
2939 #endif
2940
2941 /* Find a subspace of this space. */
2942 if (!som_is_subspace (subsection)
2943 || !som_is_container (section, subsection))
2944 continue;
2945
2946 /* If this subspace does not have real data, then we are
2947 finished with it. */
2948 if ((subsection->flags & SEC_HAS_CONTENTS) == 0)
2949 {
2950 som_section_data (subsection)->subspace_dict->fixup_request_index
2951 = -1;
2952 continue;
2953 }
2954
2955 /* This subspace has some relocations. Put the relocation stream
2956 index into the subspace record. */
2957 som_section_data (subsection)->subspace_dict->fixup_request_index
2958 = total_reloc_size;
2959
2960 /* To make life easier start over with a clean slate for
2961 each subspace. Seek to the start of the relocation stream
2962 for this subspace in preparation for writing out its fixup
2963 stream. */
2964 if (bfd_seek (abfd, current_offset + total_reloc_size, SEEK_SET) != 0)
2965 return FALSE;
2966
2967 /* Buffer space has already been allocated. Just perform some
2968 initialization here. */
2969 p = tmp_space;
2970 subspace_reloc_size = 0;
2971 reloc_offset = 0;
2972 som_initialize_reloc_queue (reloc_queue);
2973 current_rounding_mode = R_N_MODE;
2974 #ifndef NO_PCREL_MODES
2975 current_call_mode = R_SHORT_PCREL_MODE;
2976 #endif
2977
2978 /* Translate each BFD relocation into one or more SOM
2979 relocations. */
2980 for (j = 0; j < subsection->reloc_count; j++)
2981 {
2982 arelent *bfd_reloc = subsection->orelocation[j];
2983 unsigned int skip;
2984 int sym_num;
2985
2986 /* Get the symbol number. Remember it's stored in a
2987 special place for section symbols. */
2988 if ((*bfd_reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
2989 sym_num = (*bfd_reloc->sym_ptr_ptr)->udata.i;
2990 else
2991 sym_num = som_symbol_data (*bfd_reloc->sym_ptr_ptr)->index;
2992
2993 /* If there is not enough room for the next couple relocations,
2994 then dump the current buffer contents now. Also reinitialize
2995 the relocation queue.
2996
2997 No single BFD relocation could ever translate into more
2998 than 100 bytes of SOM relocations (20bytes is probably the
2999 upper limit, but leave lots of space for growth). */
3000 if (p - tmp_space + 100 > SOM_TMP_BUFSIZE)
3001 {
3002 amt = p - tmp_space;
3003 if (bfd_bwrite ((void *) tmp_space, amt, abfd) != amt)
3004 return FALSE;
3005
3006 p = tmp_space;
3007 som_initialize_reloc_queue (reloc_queue);
3008 }
3009
3010 /* Emit R_NO_RELOCATION fixups to map any bytes which were
3011 skipped. */
3012 skip = bfd_reloc->address - reloc_offset;
3013 p = som_reloc_skip (abfd, skip, p,
3014 &subspace_reloc_size, reloc_queue);
3015
3016 /* Update reloc_offset for the next iteration.
3017
3018 Many relocations do not consume input bytes. They
3019 are markers, or set state necessary to perform some
3020 later relocation. */
3021 switch (bfd_reloc->howto->type)
3022 {
3023 case R_ENTRY:
3024 case R_ALT_ENTRY:
3025 case R_EXIT:
3026 case R_N_MODE:
3027 case R_S_MODE:
3028 case R_D_MODE:
3029 case R_R_MODE:
3030 case R_FSEL:
3031 case R_LSEL:
3032 case R_RSEL:
3033 case R_COMP1:
3034 case R_COMP2:
3035 case R_BEGIN_BRTAB:
3036 case R_END_BRTAB:
3037 case R_BEGIN_TRY:
3038 case R_END_TRY:
3039 case R_N0SEL:
3040 case R_N1SEL:
3041 #ifndef NO_PCREL_MODES
3042 case R_SHORT_PCREL_MODE:
3043 case R_LONG_PCREL_MODE:
3044 #endif
3045 reloc_offset = bfd_reloc->address;
3046 break;
3047
3048 default:
3049 reloc_offset = bfd_reloc->address + 4;
3050 break;
3051 }
3052
3053 /* Now the actual relocation we care about. */
3054 switch (bfd_reloc->howto->type)
3055 {
3056 case R_PCREL_CALL:
3057 case R_ABS_CALL:
3058 p = som_reloc_call (abfd, p, &subspace_reloc_size,
3059 bfd_reloc, sym_num, reloc_queue);
3060 break;
3061
3062 case R_CODE_ONE_SYMBOL:
3063 case R_DP_RELATIVE:
3064 /* Account for any addend. */
3065 if (bfd_reloc->addend)
3066 p = som_reloc_addend (abfd, bfd_reloc->addend, p,
3067 &subspace_reloc_size, reloc_queue);
3068
3069 if (sym_num < 0x20)
3070 {
3071 bfd_put_8 (abfd, bfd_reloc->howto->type + sym_num, p);
3072 subspace_reloc_size += 1;
3073 p += 1;
3074 }
3075 else if (sym_num < 0x100)
3076 {
3077 bfd_put_8 (abfd, bfd_reloc->howto->type + 32, p);
3078 bfd_put_8 (abfd, sym_num, p + 1);
3079 p = try_prev_fixup (abfd, &subspace_reloc_size, p,
3080 2, reloc_queue);
3081 }
3082 else if (sym_num < 0x10000000)
3083 {
3084 bfd_put_8 (abfd, bfd_reloc->howto->type + 33, p);
3085 bfd_put_8 (abfd, sym_num >> 16, p + 1);
3086 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2);
3087 p = try_prev_fixup (abfd, &subspace_reloc_size,
3088 p, 4, reloc_queue);
3089 }
3090 else
3091 abort ();
3092 break;
3093
3094 case R_DATA_GPREL:
3095 /* Account for any addend. */
3096 if (bfd_reloc->addend)
3097 p = som_reloc_addend (abfd, bfd_reloc->addend, p,
3098 &subspace_reloc_size, reloc_queue);
3099
3100 if (sym_num < 0x10000000)
3101 {
3102 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3103 bfd_put_8 (abfd, sym_num >> 16, p + 1);
3104 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2);
3105 p = try_prev_fixup (abfd, &subspace_reloc_size,
3106 p, 4, reloc_queue);
3107 }
3108 else
3109 abort ();
3110 break;
3111
3112 case R_DATA_ONE_SYMBOL:
3113 case R_DATA_PLABEL:
3114 case R_CODE_PLABEL:
3115 case R_DLT_REL:
3116 /* Account for any addend using R_DATA_OVERRIDE. */
3117 if (bfd_reloc->howto->type != R_DATA_ONE_SYMBOL
3118 && bfd_reloc->addend)
3119 p = som_reloc_addend (abfd, bfd_reloc->addend, p,
3120 &subspace_reloc_size, reloc_queue);
3121
3122 if (sym_num < 0x100)
3123 {
3124 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3125 bfd_put_8 (abfd, sym_num, p + 1);
3126 p = try_prev_fixup (abfd, &subspace_reloc_size, p,
3127 2, reloc_queue);
3128 }
3129 else if (sym_num < 0x10000000)
3130 {
3131 bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p);
3132 bfd_put_8 (abfd, sym_num >> 16, p + 1);
3133 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2);
3134 p = try_prev_fixup (abfd, &subspace_reloc_size,
3135 p, 4, reloc_queue);
3136 }
3137 else
3138 abort ();
3139 break;
3140
3141 case R_ENTRY:
3142 {
3143 unsigned int tmp;
3144 arelent *tmp_reloc = NULL;
3145 bfd_put_8 (abfd, R_ENTRY, p);
3146
3147 /* R_ENTRY relocations have 64 bits of associated
3148 data. Unfortunately the addend field of a bfd
3149 relocation is only 32 bits. So, we split up
3150 the 64bit unwind information and store part in
3151 the R_ENTRY relocation, and the rest in the R_EXIT
3152 relocation. */
3153 bfd_put_32 (abfd, bfd_reloc->addend, p + 1);
3154
3155 /* Find the next R_EXIT relocation. */
3156 for (tmp = j; tmp < subsection->reloc_count; tmp++)
3157 {
3158 tmp_reloc = subsection->orelocation[tmp];
3159 if (tmp_reloc->howto->type == R_EXIT)
3160 break;
3161 }
3162
3163 if (tmp == subsection->reloc_count)
3164 abort ();
3165
3166 bfd_put_32 (abfd, tmp_reloc->addend, p + 5);
3167 p = try_prev_fixup (abfd, &subspace_reloc_size,
3168 p, 9, reloc_queue);
3169 break;
3170 }
3171
3172 case R_N_MODE:
3173 case R_S_MODE:
3174 case R_D_MODE:
3175 case R_R_MODE:
3176 /* If this relocation requests the current rounding
3177 mode, then it is redundant. */
3178 if (bfd_reloc->howto->type != current_rounding_mode)
3179 {
3180 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3181 subspace_reloc_size += 1;
3182 p += 1;
3183 current_rounding_mode = bfd_reloc->howto->type;
3184 }
3185 break;
3186
3187 #ifndef NO_PCREL_MODES
3188 case R_LONG_PCREL_MODE:
3189 case R_SHORT_PCREL_MODE:
3190 if (bfd_reloc->howto->type != current_call_mode)
3191 {
3192 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3193 subspace_reloc_size += 1;
3194 p += 1;
3195 current_call_mode = bfd_reloc->howto->type;
3196 }
3197 break;
3198 #endif
3199
3200 case R_EXIT:
3201 case R_ALT_ENTRY:
3202 case R_FSEL:
3203 case R_LSEL:
3204 case R_RSEL:
3205 case R_BEGIN_BRTAB:
3206 case R_END_BRTAB:
3207 case R_BEGIN_TRY:
3208 case R_N0SEL:
3209 case R_N1SEL:
3210 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3211 subspace_reloc_size += 1;
3212 p += 1;
3213 break;
3214
3215 case R_END_TRY:
3216 /* The end of an exception handling region. The reloc's
3217 addend contains the offset of the exception handling
3218 code. */
3219 if (bfd_reloc->addend == 0)
3220 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3221 else if (bfd_reloc->addend < 1024)
3222 {
3223 bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p);
3224 bfd_put_8 (abfd, bfd_reloc->addend / 4, p + 1);
3225 p = try_prev_fixup (abfd, &subspace_reloc_size,
3226 p, 2, reloc_queue);
3227 }
3228 else
3229 {
3230 bfd_put_8 (abfd, bfd_reloc->howto->type + 2, p);
3231 bfd_put_8 (abfd, (bfd_reloc->addend / 4) >> 16, p + 1);
3232 bfd_put_16 (abfd, bfd_reloc->addend / 4, p + 2);
3233 p = try_prev_fixup (abfd, &subspace_reloc_size,
3234 p, 4, reloc_queue);
3235 }
3236 break;
3237
3238 case R_COMP1:
3239 /* The only time we generate R_COMP1, R_COMP2 and
3240 R_CODE_EXPR relocs is for the difference of two
3241 symbols. Hence we can cheat here. */
3242 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3243 bfd_put_8 (abfd, 0x44, p + 1);
3244 p = try_prev_fixup (abfd, &subspace_reloc_size,
3245 p, 2, reloc_queue);
3246 break;
3247
3248 case R_COMP2:
3249 /* The only time we generate R_COMP1, R_COMP2 and
3250 R_CODE_EXPR relocs is for the difference of two
3251 symbols. Hence we can cheat here. */
3252 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3253 bfd_put_8 (abfd, 0x80, p + 1);
3254 bfd_put_8 (abfd, sym_num >> 16, p + 2);
3255 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 3);
3256 p = try_prev_fixup (abfd, &subspace_reloc_size,
3257 p, 5, reloc_queue);
3258 break;
3259
3260 case R_CODE_EXPR:
3261 case R_DATA_EXPR:
3262 /* The only time we generate R_COMP1, R_COMP2 and
3263 R_CODE_EXPR relocs is for the difference of two
3264 symbols. Hence we can cheat here. */
3265 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3266 subspace_reloc_size += 1;
3267 p += 1;
3268 break;
3269
3270 /* Put a "R_RESERVED" relocation in the stream if
3271 we hit something we do not understand. The linker
3272 will complain loudly if this ever happens. */
3273 default:
3274 bfd_put_8 (abfd, 0xff, p);
3275 subspace_reloc_size += 1;
3276 p += 1;
3277 break;
3278 }
3279 }
3280
3281 /* Last BFD relocation for a subspace has been processed.
3282 Map the rest of the subspace with R_NO_RELOCATION fixups. */
3283 p = som_reloc_skip (abfd, subsection->size - reloc_offset,
3284 p, &subspace_reloc_size, reloc_queue);
3285
3286 /* Scribble out the relocations. */
3287 amt = p - tmp_space;
3288 if (bfd_bwrite ((void *) tmp_space, amt, abfd) != amt)
3289 return FALSE;
3290 p = tmp_space;
3291
3292 total_reloc_size += subspace_reloc_size;
3293 som_section_data (subsection)->subspace_dict->fixup_request_quantity
3294 = subspace_reloc_size;
3295 }
3296 section = section->next;
3297 }
3298 *total_reloc_sizep = total_reloc_size;
3299 return TRUE;
3300 }
3301
3302 /* Write out the space/subspace string table. */
3303
3304 static bfd_boolean
som_write_space_strings(bfd * abfd,unsigned long current_offset,unsigned int * string_sizep)3305 som_write_space_strings (bfd *abfd,
3306 unsigned long current_offset,
3307 unsigned int *string_sizep)
3308 {
3309 /* Chunk of memory that we can use as buffer space, then throw
3310 away. */
3311 size_t tmp_space_size = SOM_TMP_BUFSIZE;
3312 char *tmp_space = xmalloc (tmp_space_size);
3313 char *p = tmp_space;
3314 unsigned int strings_size = 0;
3315 asection *section;
3316 bfd_size_type amt;
3317 bfd_size_type res;
3318
3319 /* Seek to the start of the space strings in preparation for writing
3320 them out. */
3321 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0)
3322 return FALSE;
3323
3324 /* Walk through all the spaces and subspaces (order is not important)
3325 building up and writing string table entries for their names. */
3326 for (section = abfd->sections; section != NULL; section = section->next)
3327 {
3328 size_t length;
3329
3330 /* Only work with space/subspaces; avoid any other sections
3331 which might have been made (.text for example). */
3332 if (!som_is_space (section) && !som_is_subspace (section))
3333 continue;
3334
3335 /* Get the length of the space/subspace name. */
3336 length = strlen (section->name);
3337
3338 /* If there is not enough room for the next entry, then dump the
3339 current buffer contents now and maybe allocate a larger
3340 buffer. Each entry will take 4 bytes to hold the string
3341 length + the string itself + null terminator. */
3342 if (p - tmp_space + 5 + length > tmp_space_size)
3343 {
3344 /* Flush buffer before refilling or reallocating. */
3345 amt = p - tmp_space;
3346 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt)
3347 return FALSE;
3348
3349 /* Reallocate if now empty buffer still too small. */
3350 if (5 + length > tmp_space_size)
3351 {
3352 /* Ensure a minimum growth factor to avoid O(n**2) space
3353 consumption for n strings. The optimal minimum
3354 factor seems to be 2, as no other value can guarantee
3355 wasting less than 50% space. (Note that we cannot
3356 deallocate space allocated by `alloca' without
3357 returning from this function.) The same technique is
3358 used a few more times below when a buffer is
3359 reallocated. */
3360 if (2 * tmp_space_size < length + 5)
3361 tmp_space_size = length + 5;
3362 else
3363 tmp_space_size = 2 * tmp_space_size;
3364 tmp_space = xrealloc (tmp_space, tmp_space_size);
3365 }
3366
3367 /* Reset to beginning of the (possibly new) buffer space. */
3368 p = tmp_space;
3369 }
3370
3371 /* First element in a string table entry is the length of the
3372 string. Alignment issues are already handled. */
3373 bfd_put_32 (abfd, (bfd_vma) length, p);
3374 p += 4;
3375 strings_size += 4;
3376
3377 /* Record the index in the space/subspace records. */
3378 if (som_is_space (section))
3379 som_section_data (section)->space_dict->name = strings_size;
3380 else
3381 som_section_data (section)->subspace_dict->name = strings_size;
3382
3383 /* Next comes the string itself + a null terminator. */
3384 strcpy (p, section->name);
3385 p += length + 1;
3386 strings_size += length + 1;
3387
3388 /* Always align up to the next word boundary. */
3389 while (strings_size % 4)
3390 {
3391 bfd_put_8 (abfd, 0, p);
3392 p++;
3393 strings_size++;
3394 }
3395 }
3396
3397 /* Done with the space/subspace strings. Write out any information
3398 contained in a partial block. */
3399 amt = p - tmp_space;
3400 res = bfd_bwrite ((void *) &tmp_space[0], amt, abfd);
3401 free (tmp_space);
3402 if (res != amt)
3403 return FALSE;
3404 *string_sizep = strings_size;
3405 return TRUE;
3406 }
3407
3408 /* Write out the symbol string table. */
3409
3410 static bfd_boolean
som_write_symbol_strings(bfd * abfd,unsigned long current_offset,asymbol ** syms,unsigned int num_syms,unsigned int * string_sizep,struct som_compilation_unit * compilation_unit)3411 som_write_symbol_strings (bfd *abfd,
3412 unsigned long current_offset,
3413 asymbol **syms,
3414 unsigned int num_syms,
3415 unsigned int *string_sizep,
3416 struct som_compilation_unit *compilation_unit)
3417 {
3418 unsigned int i;
3419 /* Chunk of memory that we can use as buffer space, then throw
3420 away. */
3421 size_t tmp_space_size = SOM_TMP_BUFSIZE;
3422 char *tmp_space = xmalloc (tmp_space_size);
3423 char *p = tmp_space;
3424 unsigned int strings_size = 0;
3425 bfd_size_type amt;
3426 bfd_size_type res;
3427
3428 /* This gets a bit gruesome because of the compilation unit. The
3429 strings within the compilation unit are part of the symbol
3430 strings, but don't have symbol_dictionary entries. So, manually
3431 write them and update the compilation unit header. On input, the
3432 compilation unit header contains local copies of the strings.
3433 Move them aside. */
3434
3435 /* Seek to the start of the space strings in preparation for writing
3436 them out. */
3437 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0)
3438 return FALSE;
3439
3440 if (compilation_unit)
3441 {
3442 for (i = 0; i < 4; i++)
3443 {
3444 struct som_name_pt *name;
3445 size_t length;
3446
3447 switch (i)
3448 {
3449 case 0:
3450 name = &compilation_unit->name;
3451 break;
3452 case 1:
3453 name = &compilation_unit->language_name;
3454 break;
3455 case 2:
3456 name = &compilation_unit->product_id;
3457 break;
3458 case 3:
3459 name = &compilation_unit->version_id;
3460 break;
3461 default:
3462 abort ();
3463 }
3464
3465 length = strlen (name->name);
3466
3467 /* If there is not enough room for the next entry, then dump
3468 the current buffer contents now and maybe allocate a
3469 larger buffer. */
3470 if (p - tmp_space + 5 + length > tmp_space_size)
3471 {
3472 /* Flush buffer before refilling or reallocating. */
3473 amt = p - tmp_space;
3474 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt)
3475 return FALSE;
3476
3477 /* Reallocate if now empty buffer still too small. */
3478 if (5 + length > tmp_space_size)
3479 {
3480 /* See alloca above for discussion of new size. */
3481 if (2 * tmp_space_size < 5 + length)
3482 tmp_space_size = 5 + length;
3483 else
3484 tmp_space_size = 2 * tmp_space_size;
3485 tmp_space = xrealloc (tmp_space, tmp_space_size);
3486 }
3487
3488 /* Reset to beginning of the (possibly new) buffer
3489 space. */
3490 p = tmp_space;
3491 }
3492
3493 /* First element in a string table entry is the length of
3494 the string. This must always be 4 byte aligned. This is
3495 also an appropriate time to fill in the string index
3496 field in the symbol table entry. */
3497 bfd_put_32 (abfd, (bfd_vma) length, p);
3498 strings_size += 4;
3499 p += 4;
3500
3501 /* Next comes the string itself + a null terminator. */
3502 strcpy (p, name->name);
3503
3504 name->strx = strings_size;
3505
3506 p += length + 1;
3507 strings_size += length + 1;
3508
3509 /* Always align up to the next word boundary. */
3510 while (strings_size % 4)
3511 {
3512 bfd_put_8 (abfd, 0, p);
3513 strings_size++;
3514 p++;
3515 }
3516 }
3517 }
3518
3519 for (i = 0; i < num_syms; i++)
3520 {
3521 size_t length = strlen (syms[i]->name);
3522
3523 /* If there is not enough room for the next entry, then dump the
3524 current buffer contents now and maybe allocate a larger buffer. */
3525 if (p - tmp_space + 5 + length > tmp_space_size)
3526 {
3527 /* Flush buffer before refilling or reallocating. */
3528 amt = p - tmp_space;
3529 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt)
3530 return FALSE;
3531
3532 /* Reallocate if now empty buffer still too small. */
3533 if (5 + length > tmp_space_size)
3534 {
3535 /* See alloca above for discussion of new size. */
3536 if (2 * tmp_space_size < 5 + length)
3537 tmp_space_size = 5 + length;
3538 else
3539 tmp_space_size = 2 * tmp_space_size;
3540 tmp_space = xrealloc (tmp_space, tmp_space_size);
3541 }
3542
3543 /* Reset to beginning of the (possibly new) buffer space. */
3544 p = tmp_space;
3545 }
3546
3547 /* First element in a string table entry is the length of the
3548 string. This must always be 4 byte aligned. This is also
3549 an appropriate time to fill in the string index field in the
3550 symbol table entry. */
3551 bfd_put_32 (abfd, (bfd_vma) length, p);
3552 strings_size += 4;
3553 p += 4;
3554
3555 /* Next comes the string itself + a null terminator. */
3556 strcpy (p, syms[i]->name);
3557
3558 som_symbol_data (syms[i])->stringtab_offset = strings_size;
3559 p += length + 1;
3560 strings_size += length + 1;
3561
3562 /* Always align up to the next word boundary. */
3563 while (strings_size % 4)
3564 {
3565 bfd_put_8 (abfd, 0, p);
3566 strings_size++;
3567 p++;
3568 }
3569 }
3570
3571 /* Scribble out any partial block. */
3572 amt = p - tmp_space;
3573 res = bfd_bwrite ((void *) &tmp_space[0], amt, abfd);
3574 free (tmp_space);
3575 if (res != amt)
3576 return FALSE;
3577
3578 *string_sizep = strings_size;
3579 return TRUE;
3580 }
3581
3582 /* Compute variable information to be placed in the SOM headers,
3583 space/subspace dictionaries, relocation streams, etc. Begin
3584 writing parts of the object file. */
3585
3586 static bfd_boolean
som_begin_writing(bfd * abfd)3587 som_begin_writing (bfd *abfd)
3588 {
3589 unsigned long current_offset = 0;
3590 unsigned int strings_size = 0;
3591 unsigned long num_spaces, num_subspaces, i;
3592 asection *section;
3593 unsigned int total_subspaces = 0;
3594 struct som_exec_auxhdr *exec_header = NULL;
3595
3596 /* The file header will always be first in an object file,
3597 everything else can be in random locations. To keep things
3598 "simple" BFD will lay out the object file in the manner suggested
3599 by the PRO ABI for PA-RISC Systems. */
3600
3601 /* Before any output can really begin offsets for all the major
3602 portions of the object file must be computed. So, starting
3603 with the initial file header compute (and sometimes write)
3604 each portion of the object file. */
3605
3606 /* Make room for the file header, it's contents are not complete
3607 yet, so it can not be written at this time. */
3608 current_offset += sizeof (struct som_external_header);
3609
3610 /* Any auxiliary headers will follow the file header. Right now
3611 we support only the copyright and version headers. */
3612 obj_som_file_hdr (abfd)->aux_header_location = current_offset;
3613 obj_som_file_hdr (abfd)->aux_header_size = 0;
3614 if (abfd->flags & (EXEC_P | DYNAMIC))
3615 {
3616 /* Parts of the exec header will be filled in later, so
3617 delay writing the header itself. Fill in the defaults,
3618 and write it later. */
3619 current_offset += sizeof (struct som_external_exec_auxhdr);
3620 obj_som_file_hdr (abfd)->aux_header_size
3621 += sizeof (struct som_external_exec_auxhdr);
3622 exec_header = obj_som_exec_hdr (abfd);
3623 exec_header->som_auxhdr.type = EXEC_AUX_ID;
3624 exec_header->som_auxhdr.length = 40;
3625 }
3626 if (obj_som_version_hdr (abfd) != NULL)
3627 {
3628 struct som_external_string_auxhdr ext_string_auxhdr;
3629 bfd_size_type len;
3630
3631 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0)
3632 return FALSE;
3633
3634 /* Write the aux_id structure and the string length. */
3635 len = sizeof (struct som_external_string_auxhdr);
3636 obj_som_file_hdr (abfd)->aux_header_size += len;
3637 current_offset += len;
3638 som_swap_string_auxhdr_out
3639 (obj_som_version_hdr (abfd), &ext_string_auxhdr);
3640 if (bfd_bwrite (&ext_string_auxhdr, len, abfd) != len)
3641 return FALSE;
3642
3643 /* Write the version string. */
3644 len = obj_som_version_hdr (abfd)->header_id.length - 4;
3645 obj_som_file_hdr (abfd)->aux_header_size += len;
3646 current_offset += len;
3647 if (bfd_bwrite ((void *) obj_som_version_hdr (abfd)->string, len, abfd)
3648 != len)
3649 return FALSE;
3650 }
3651
3652 if (obj_som_copyright_hdr (abfd) != NULL)
3653 {
3654 struct som_external_string_auxhdr ext_string_auxhdr;
3655 bfd_size_type len;
3656
3657 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0)
3658 return FALSE;
3659
3660 /* Write the aux_id structure and the string length. */
3661 len = sizeof (struct som_external_string_auxhdr);
3662 obj_som_file_hdr (abfd)->aux_header_size += len;
3663 current_offset += len;
3664 som_swap_string_auxhdr_out
3665 (obj_som_copyright_hdr (abfd), &ext_string_auxhdr);
3666 if (bfd_bwrite (&ext_string_auxhdr, len, abfd) != len)
3667 return FALSE;
3668
3669 /* Write the copyright string. */
3670 len = obj_som_copyright_hdr (abfd)->header_id.length - 4;
3671 obj_som_file_hdr (abfd)->aux_header_size += len;
3672 current_offset += len;
3673 if (bfd_bwrite ((void *) obj_som_copyright_hdr (abfd)->string, len, abfd)
3674 != len)
3675 return FALSE;
3676 }
3677
3678 /* Next comes the initialization pointers; we have no initialization
3679 pointers, so current offset does not change. */
3680 obj_som_file_hdr (abfd)->init_array_location = current_offset;
3681 obj_som_file_hdr (abfd)->init_array_total = 0;
3682
3683 /* Next are the space records. These are fixed length records.
3684
3685 Count the number of spaces to determine how much room is needed
3686 in the object file for the space records.
3687
3688 The names of the spaces are stored in a separate string table,
3689 and the index for each space into the string table is computed
3690 below. Therefore, it is not possible to write the space headers
3691 at this time. */
3692 num_spaces = som_count_spaces (abfd);
3693 obj_som_file_hdr (abfd)->space_location = current_offset;
3694 obj_som_file_hdr (abfd)->space_total = num_spaces;
3695 current_offset +=
3696 num_spaces * sizeof (struct som_external_space_dictionary_record);
3697
3698 /* Next are the subspace records. These are fixed length records.
3699
3700 Count the number of subspaes to determine how much room is needed
3701 in the object file for the subspace records.
3702
3703 A variety if fields in the subspace record are still unknown at
3704 this time (index into string table, fixup stream location/size, etc). */
3705 num_subspaces = som_count_subspaces (abfd);
3706 obj_som_file_hdr (abfd)->subspace_location = current_offset;
3707 obj_som_file_hdr (abfd)->subspace_total = num_subspaces;
3708 current_offset
3709 += num_subspaces * sizeof (struct som_external_subspace_dictionary_record);
3710
3711 /* Next is the string table for the space/subspace names. We will
3712 build and write the string table on the fly. At the same time
3713 we will fill in the space/subspace name index fields. */
3714
3715 /* The string table needs to be aligned on a word boundary. */
3716 if (current_offset % 4)
3717 current_offset += (4 - (current_offset % 4));
3718
3719 /* Mark the offset of the space/subspace string table in the
3720 file header. */
3721 obj_som_file_hdr (abfd)->space_strings_location = current_offset;
3722
3723 /* Scribble out the space strings. */
3724 if (! som_write_space_strings (abfd, current_offset, &strings_size))
3725 return FALSE;
3726
3727 /* Record total string table size in the header and update the
3728 current offset. */
3729 obj_som_file_hdr (abfd)->space_strings_size = strings_size;
3730 current_offset += strings_size;
3731
3732 /* Next is the compilation unit. */
3733 obj_som_file_hdr (abfd)->compiler_location = current_offset;
3734 obj_som_file_hdr (abfd)->compiler_total = 0;
3735 if (obj_som_compilation_unit (abfd))
3736 {
3737 obj_som_file_hdr (abfd)->compiler_total = 1;
3738 current_offset += sizeof (struct som_external_compilation_unit);
3739 }
3740
3741 /* Now compute the file positions for the loadable subspaces, taking
3742 care to make sure everything stays properly aligned. */
3743
3744 section = abfd->sections;
3745 for (i = 0; i < num_spaces; i++)
3746 {
3747 asection *subsection;
3748 int first_subspace;
3749 unsigned int subspace_offset = 0;
3750
3751 /* Find a space. */
3752 while (!som_is_space (section))
3753 section = section->next;
3754
3755 first_subspace = 1;
3756 /* Now look for all its subspaces. */
3757 for (subsection = abfd->sections;
3758 subsection != NULL;
3759 subsection = subsection->next)
3760 {
3761
3762 if (!som_is_subspace (subsection)
3763 || !som_is_container (section, subsection)
3764 || (subsection->flags & SEC_ALLOC) == 0)
3765 continue;
3766
3767 /* If this is the first subspace in the space, and we are
3768 building an executable, then take care to make sure all
3769 the alignments are correct and update the exec header. */
3770 if (first_subspace
3771 && (abfd->flags & (EXEC_P | DYNAMIC)))
3772 {
3773 /* Demand paged executables have each space aligned to a
3774 page boundary. Sharable executables (write-protected
3775 text) have just the private (aka data & bss) space aligned
3776 to a page boundary. Ugh. Not true for HPUX.
3777
3778 The HPUX kernel requires the text to always be page aligned
3779 within the file regardless of the executable's type. */
3780 if (abfd->flags & (D_PAGED | DYNAMIC)
3781 || (subsection->flags & SEC_CODE)
3782 || ((abfd->flags & WP_TEXT)
3783 && (subsection->flags & SEC_DATA)))
3784 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE);
3785
3786 /* Update the exec header. */
3787 if (subsection->flags & SEC_CODE && exec_header->exec_tfile == 0)
3788 {
3789 exec_header->exec_tmem = section->vma;
3790 exec_header->exec_tfile = current_offset;
3791 }
3792 if (subsection->flags & SEC_DATA && exec_header->exec_dfile == 0)
3793 {
3794 exec_header->exec_dmem = section->vma;
3795 exec_header->exec_dfile = current_offset;
3796 }
3797
3798 /* Keep track of exactly where we are within a particular
3799 space. This is necessary as the braindamaged HPUX
3800 loader will create holes between subspaces *and*
3801 subspace alignments are *NOT* preserved. What a crock. */
3802 subspace_offset = subsection->vma;
3803
3804 /* Only do this for the first subspace within each space. */
3805 first_subspace = 0;
3806 }
3807 else if (abfd->flags & (EXEC_P | DYNAMIC))
3808 {
3809 /* The braindamaged HPUX loader may have created a hole
3810 between two subspaces. It is *not* sufficient to use
3811 the alignment specifications within the subspaces to
3812 account for these holes -- I've run into at least one
3813 case where the loader left one code subspace unaligned
3814 in a final executable.
3815
3816 To combat this we keep a current offset within each space,
3817 and use the subspace vma fields to detect and preserve
3818 holes. What a crock!
3819
3820 ps. This is not necessary for unloadable space/subspaces. */
3821 current_offset += subsection->vma - subspace_offset;
3822 if (subsection->flags & SEC_CODE)
3823 exec_header->exec_tsize += subsection->vma - subspace_offset;
3824 else
3825 exec_header->exec_dsize += subsection->vma - subspace_offset;
3826 subspace_offset += subsection->vma - subspace_offset;
3827 }
3828
3829 subsection->target_index = total_subspaces++;
3830 /* This is real data to be loaded from the file. */
3831 if (subsection->flags & SEC_LOAD)
3832 {
3833 /* Update the size of the code & data. */
3834 if (abfd->flags & (EXEC_P | DYNAMIC)
3835 && subsection->flags & SEC_CODE)
3836 exec_header->exec_tsize += subsection->size;
3837 else if (abfd->flags & (EXEC_P | DYNAMIC)
3838 && subsection->flags & SEC_DATA)
3839 exec_header->exec_dsize += subsection->size;
3840 som_section_data (subsection)->subspace_dict->file_loc_init_value
3841 = current_offset;
3842 subsection->filepos = current_offset;
3843 current_offset += subsection->size;
3844 subspace_offset += subsection->size;
3845 }
3846 /* Looks like uninitialized data. */
3847 else
3848 {
3849 /* Update the size of the bss section. */
3850 if (abfd->flags & (EXEC_P | DYNAMIC))
3851 exec_header->exec_bsize += subsection->size;
3852
3853 som_section_data (subsection)->subspace_dict->file_loc_init_value
3854 = 0;
3855 som_section_data (subsection)->subspace_dict->
3856 initialization_length = 0;
3857 }
3858 }
3859 /* Goto the next section. */
3860 section = section->next;
3861 }
3862
3863 /* Finally compute the file positions for unloadable subspaces.
3864 If building an executable, start the unloadable stuff on its
3865 own page. */
3866
3867 if (abfd->flags & (EXEC_P | DYNAMIC))
3868 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE);
3869
3870 obj_som_file_hdr (abfd)->unloadable_sp_location = current_offset;
3871 section = abfd->sections;
3872 for (i = 0; i < num_spaces; i++)
3873 {
3874 asection *subsection;
3875
3876 /* Find a space. */
3877 while (!som_is_space (section))
3878 section = section->next;
3879
3880 if (abfd->flags & (EXEC_P | DYNAMIC))
3881 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE);
3882
3883 /* Now look for all its subspaces. */
3884 for (subsection = abfd->sections;
3885 subsection != NULL;
3886 subsection = subsection->next)
3887 {
3888
3889 if (!som_is_subspace (subsection)
3890 || !som_is_container (section, subsection)
3891 || (subsection->flags & SEC_ALLOC) != 0)
3892 continue;
3893
3894 subsection->target_index = total_subspaces++;
3895 /* This is real data to be loaded from the file. */
3896 if ((subsection->flags & SEC_LOAD) == 0)
3897 {
3898 som_section_data (subsection)->subspace_dict->file_loc_init_value
3899 = current_offset;
3900 subsection->filepos = current_offset;
3901 current_offset += subsection->size;
3902 }
3903 /* Looks like uninitialized data. */
3904 else
3905 {
3906 som_section_data (subsection)->subspace_dict->file_loc_init_value
3907 = 0;
3908 som_section_data (subsection)->subspace_dict->
3909 initialization_length = subsection->size;
3910 }
3911 }
3912 /* Goto the next section. */
3913 section = section->next;
3914 }
3915
3916 /* If building an executable, then make sure to seek to and write
3917 one byte at the end of the file to make sure any necessary
3918 zeros are filled in. Ugh. */
3919 if (abfd->flags & (EXEC_P | DYNAMIC))
3920 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE);
3921 if (bfd_seek (abfd, (file_ptr) current_offset - 1, SEEK_SET) != 0)
3922 return FALSE;
3923 if (bfd_bwrite ((void *) "", (bfd_size_type) 1, abfd) != 1)
3924 return FALSE;
3925
3926 obj_som_file_hdr (abfd)->unloadable_sp_size
3927 = current_offset - obj_som_file_hdr (abfd)->unloadable_sp_location;
3928
3929 /* Loader fixups are not supported in any way shape or form. */
3930 obj_som_file_hdr (abfd)->loader_fixup_location = 0;
3931 obj_som_file_hdr (abfd)->loader_fixup_total = 0;
3932
3933 /* Done. Store the total size of the SOM so far. */
3934 obj_som_file_hdr (abfd)->som_length = current_offset;
3935
3936 return TRUE;
3937 }
3938
3939 /* Finally, scribble out the various headers to the disk. */
3940
3941 static bfd_boolean
som_finish_writing(bfd * abfd)3942 som_finish_writing (bfd *abfd)
3943 {
3944 int num_spaces = som_count_spaces (abfd);
3945 asymbol **syms = bfd_get_outsymbols (abfd);
3946 int i, num_syms;
3947 int subspace_index = 0;
3948 file_ptr location;
3949 asection *section;
3950 unsigned long current_offset;
3951 unsigned int strings_size, total_reloc_size;
3952 bfd_size_type amt;
3953 struct som_external_header ext_header;
3954
3955 /* We must set up the version identifier here as objcopy/strip copy
3956 private BFD data too late for us to handle this in som_begin_writing. */
3957 if (obj_som_exec_data (abfd)
3958 && obj_som_exec_data (abfd)->version_id)
3959 obj_som_file_hdr (abfd)->version_id = obj_som_exec_data (abfd)->version_id;
3960 else
3961 obj_som_file_hdr (abfd)->version_id = NEW_VERSION_ID;
3962
3963 /* Next is the symbol table. These are fixed length records.
3964
3965 Count the number of symbols to determine how much room is needed
3966 in the object file for the symbol table.
3967
3968 The names of the symbols are stored in a separate string table,
3969 and the index for each symbol name into the string table is computed
3970 below. Therefore, it is not possible to write the symbol table
3971 at this time.
3972
3973 These used to be output before the subspace contents, but they
3974 were moved here to work around a stupid bug in the hpux linker
3975 (fixed in hpux10). */
3976 current_offset = obj_som_file_hdr (abfd)->som_length;
3977
3978 /* Make sure we're on a word boundary. */
3979 if (current_offset % 4)
3980 current_offset += (4 - (current_offset % 4));
3981
3982 num_syms = bfd_get_symcount (abfd);
3983 obj_som_file_hdr (abfd)->symbol_location = current_offset;
3984 obj_som_file_hdr (abfd)->symbol_total = num_syms;
3985 current_offset +=
3986 num_syms * sizeof (struct som_external_symbol_dictionary_record);
3987
3988 /* Next are the symbol strings.
3989 Align them to a word boundary. */
3990 if (current_offset % 4)
3991 current_offset += (4 - (current_offset % 4));
3992 obj_som_file_hdr (abfd)->symbol_strings_location = current_offset;
3993
3994 /* Scribble out the symbol strings. */
3995 if (! som_write_symbol_strings (abfd, current_offset, syms,
3996 num_syms, &strings_size,
3997 obj_som_compilation_unit (abfd)))
3998 return FALSE;
3999
4000 /* Record total string table size in header and update the
4001 current offset. */
4002 obj_som_file_hdr (abfd)->symbol_strings_size = strings_size;
4003 current_offset += strings_size;
4004
4005 /* Do prep work before handling fixups. */
4006 som_prep_for_fixups (abfd,
4007 bfd_get_outsymbols (abfd),
4008 bfd_get_symcount (abfd));
4009
4010 /* At the end of the file is the fixup stream which starts on a
4011 word boundary. */
4012 if (current_offset % 4)
4013 current_offset += (4 - (current_offset % 4));
4014 obj_som_file_hdr (abfd)->fixup_request_location = current_offset;
4015
4016 /* Write the fixups and update fields in subspace headers which
4017 relate to the fixup stream. */
4018 if (! som_write_fixups (abfd, current_offset, &total_reloc_size))
4019 return FALSE;
4020
4021 /* Record the total size of the fixup stream in the file header. */
4022 obj_som_file_hdr (abfd)->fixup_request_total = total_reloc_size;
4023
4024 /* Done. Store the total size of the SOM. */
4025 obj_som_file_hdr (abfd)->som_length = current_offset + total_reloc_size;
4026
4027 /* Now that the symbol table information is complete, build and
4028 write the symbol table. */
4029 if (! som_build_and_write_symbol_table (abfd))
4030 return FALSE;
4031
4032 /* Subspaces are written first so that we can set up information
4033 about them in their containing spaces as the subspace is written. */
4034
4035 /* Seek to the start of the subspace dictionary records. */
4036 location = obj_som_file_hdr (abfd)->subspace_location;
4037 if (bfd_seek (abfd, location, SEEK_SET) != 0)
4038 return FALSE;
4039
4040 section = abfd->sections;
4041 /* Now for each loadable space write out records for its subspaces. */
4042 for (i = 0; i < num_spaces; i++)
4043 {
4044 asection *subsection;
4045
4046 /* Find a space. */
4047 while (!som_is_space (section))
4048 section = section->next;
4049
4050 /* Now look for all its subspaces. */
4051 for (subsection = abfd->sections;
4052 subsection != NULL;
4053 subsection = subsection->next)
4054 {
4055 struct som_external_subspace_dictionary_record ext_subspace_dict;
4056
4057 /* Skip any section which does not correspond to a space
4058 or subspace. Or does not have SEC_ALLOC set (and therefore
4059 has no real bits on the disk). */
4060 if (!som_is_subspace (subsection)
4061 || !som_is_container (section, subsection)
4062 || (subsection->flags & SEC_ALLOC) == 0)
4063 continue;
4064
4065 /* If this is the first subspace for this space, then save
4066 the index of the subspace in its containing space. Also
4067 set "is_loadable" in the containing space. */
4068
4069 if (som_section_data (section)->space_dict->subspace_quantity == 0)
4070 {
4071 som_section_data (section)->space_dict->is_loadable = 1;
4072 som_section_data (section)->space_dict->subspace_index
4073 = subspace_index;
4074 }
4075
4076 /* Increment the number of subspaces seen and the number of
4077 subspaces contained within the current space. */
4078 subspace_index++;
4079 som_section_data (section)->space_dict->subspace_quantity++;
4080
4081 /* Mark the index of the current space within the subspace's
4082 dictionary record. */
4083 som_section_data (subsection)->subspace_dict->space_index = i;
4084
4085 /* Dump the current subspace header. */
4086 som_swap_subspace_dictionary_record_out
4087 (som_section_data (subsection)->subspace_dict, &ext_subspace_dict);
4088 amt = sizeof (struct som_subspace_dictionary_record);
4089 if (bfd_bwrite (&ext_subspace_dict, amt, abfd) != amt)
4090 return FALSE;
4091 }
4092 /* Goto the next section. */
4093 section = section->next;
4094 }
4095
4096 /* Now repeat the process for unloadable subspaces. */
4097 section = abfd->sections;
4098 /* Now for each space write out records for its subspaces. */
4099 for (i = 0; i < num_spaces; i++)
4100 {
4101 asection *subsection;
4102
4103 /* Find a space. */
4104 while (!som_is_space (section))
4105 section = section->next;
4106
4107 /* Now look for all its subspaces. */
4108 for (subsection = abfd->sections;
4109 subsection != NULL;
4110 subsection = subsection->next)
4111 {
4112 struct som_external_subspace_dictionary_record ext_subspace_dict;
4113
4114 /* Skip any section which does not correspond to a space or
4115 subspace, or which SEC_ALLOC set (and therefore handled
4116 in the loadable spaces/subspaces code above). */
4117
4118 if (!som_is_subspace (subsection)
4119 || !som_is_container (section, subsection)
4120 || (subsection->flags & SEC_ALLOC) != 0)
4121 continue;
4122
4123 /* If this is the first subspace for this space, then save
4124 the index of the subspace in its containing space. Clear
4125 "is_loadable". */
4126
4127 if (som_section_data (section)->space_dict->subspace_quantity == 0)
4128 {
4129 som_section_data (section)->space_dict->is_loadable = 0;
4130 som_section_data (section)->space_dict->subspace_index
4131 = subspace_index;
4132 }
4133
4134 /* Increment the number of subspaces seen and the number of
4135 subspaces contained within the current space. */
4136 som_section_data (section)->space_dict->subspace_quantity++;
4137 subspace_index++;
4138
4139 /* Mark the index of the current space within the subspace's
4140 dictionary record. */
4141 som_section_data (subsection)->subspace_dict->space_index = i;
4142
4143 /* Dump this subspace header. */
4144 som_swap_subspace_dictionary_record_out
4145 (som_section_data (subsection)->subspace_dict, &ext_subspace_dict);
4146 amt = sizeof (struct som_subspace_dictionary_record);
4147 if (bfd_bwrite (&ext_subspace_dict, amt, abfd) != amt)
4148 return FALSE;
4149 }
4150 /* Goto the next section. */
4151 section = section->next;
4152 }
4153
4154 /* All the subspace dictionary records are written, and all the
4155 fields are set up in the space dictionary records.
4156
4157 Seek to the right location and start writing the space
4158 dictionary records. */
4159 location = obj_som_file_hdr (abfd)->space_location;
4160 if (bfd_seek (abfd, location, SEEK_SET) != 0)
4161 return FALSE;
4162
4163 section = abfd->sections;
4164 for (i = 0; i < num_spaces; i++)
4165 {
4166 struct som_external_space_dictionary_record ext_space_dict;
4167
4168 /* Find a space. */
4169 while (!som_is_space (section))
4170 section = section->next;
4171
4172 /* Dump its header. */
4173 som_swap_space_dictionary_out (som_section_data (section)->space_dict,
4174 &ext_space_dict);
4175 amt = sizeof (struct som_external_space_dictionary_record);
4176 if (bfd_bwrite (&ext_space_dict, amt, abfd) != amt)
4177 return FALSE;
4178
4179 /* Goto the next section. */
4180 section = section->next;
4181 }
4182
4183 /* Write the compilation unit record if there is one. */
4184 if (obj_som_compilation_unit (abfd))
4185 {
4186 struct som_external_compilation_unit ext_comp_unit;
4187
4188 location = obj_som_file_hdr (abfd)->compiler_location;
4189 if (bfd_seek (abfd, location, SEEK_SET) != 0)
4190 return FALSE;
4191
4192 som_swap_compilation_unit_out
4193 (obj_som_compilation_unit (abfd), &ext_comp_unit);
4194
4195 amt = sizeof (struct som_external_compilation_unit);
4196 if (bfd_bwrite (&ext_comp_unit, amt, abfd) != amt)
4197 return FALSE;
4198 }
4199
4200 /* Setting of the system_id has to happen very late now that copying of
4201 BFD private data happens *after* section contents are set. */
4202 if (abfd->flags & (EXEC_P | DYNAMIC))
4203 obj_som_file_hdr (abfd)->system_id = obj_som_exec_data (abfd)->system_id;
4204 else if (bfd_get_mach (abfd) == pa20)
4205 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC2_0;
4206 else if (bfd_get_mach (abfd) == pa11)
4207 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC1_1;
4208 else
4209 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC1_0;
4210
4211 /* Swap and compute the checksum for the file header just before writing
4212 the header to disk. */
4213 som_swap_header_out (obj_som_file_hdr (abfd), &ext_header);
4214 bfd_putb32 (som_compute_checksum (&ext_header), ext_header.checksum);
4215
4216 /* Only thing left to do is write out the file header. It is always
4217 at location zero. Seek there and write it. */
4218 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
4219 return FALSE;
4220 amt = sizeof (struct som_external_header);
4221 if (bfd_bwrite (&ext_header, amt, abfd) != amt)
4222 return FALSE;
4223
4224 /* Now write the exec header. */
4225 if (abfd->flags & (EXEC_P | DYNAMIC))
4226 {
4227 long tmp, som_length;
4228 struct som_exec_auxhdr *exec_header;
4229 struct som_external_exec_auxhdr ext_exec_header;
4230
4231 exec_header = obj_som_exec_hdr (abfd);
4232 exec_header->exec_entry = bfd_get_start_address (abfd);
4233 exec_header->exec_flags = obj_som_exec_data (abfd)->exec_flags;
4234
4235 /* Oh joys. Ram some of the BSS data into the DATA section
4236 to be compatible with how the hp linker makes objects
4237 (saves memory space). */
4238 tmp = exec_header->exec_dsize;
4239 tmp = SOM_ALIGN (tmp, PA_PAGESIZE);
4240 exec_header->exec_bsize -= (tmp - exec_header->exec_dsize);
4241 if (exec_header->exec_bsize < 0)
4242 exec_header->exec_bsize = 0;
4243 exec_header->exec_dsize = tmp;
4244
4245 /* Now perform some sanity checks. The idea is to catch bogons now and
4246 inform the user, instead of silently generating a bogus file. */
4247 som_length = obj_som_file_hdr (abfd)->som_length;
4248 if (exec_header->exec_tfile + exec_header->exec_tsize > som_length
4249 || exec_header->exec_dfile + exec_header->exec_dsize > som_length)
4250 {
4251 bfd_set_error (bfd_error_bad_value);
4252 return FALSE;
4253 }
4254
4255 som_swap_exec_auxhdr_out (exec_header, &ext_exec_header);
4256
4257 if (bfd_seek (abfd, obj_som_file_hdr (abfd)->aux_header_location,
4258 SEEK_SET) != 0)
4259 return FALSE;
4260
4261 amt = sizeof (ext_exec_header);
4262 if (bfd_bwrite (&ext_exec_header, amt, abfd) != amt)
4263 return FALSE;
4264 }
4265 return TRUE;
4266 }
4267
4268 /* Compute and return the checksum for a SOM file header. */
4269
4270 static unsigned long
som_compute_checksum(struct som_external_header * hdr)4271 som_compute_checksum (struct som_external_header *hdr)
4272 {
4273 unsigned long checksum, count, i;
4274 unsigned long *buffer = (unsigned long *) hdr;
4275
4276 checksum = 0;
4277 count = sizeof (struct som_external_header) / 4;
4278 for (i = 0; i < count; i++)
4279 checksum ^= *(buffer + i);
4280
4281 return checksum;
4282 }
4283
4284 static void
som_bfd_derive_misc_symbol_info(bfd * abfd ATTRIBUTE_UNUSED,asymbol * sym,struct som_misc_symbol_info * info)4285 som_bfd_derive_misc_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
4286 asymbol *sym,
4287 struct som_misc_symbol_info *info)
4288 {
4289 /* Initialize. */
4290 memset (info, 0, sizeof (struct som_misc_symbol_info));
4291
4292 /* The HP SOM linker requires detailed type information about
4293 all symbols (including undefined symbols!). Unfortunately,
4294 the type specified in an import/export statement does not
4295 always match what the linker wants. Severe braindamage. */
4296
4297 /* Section symbols will not have a SOM symbol type assigned to
4298 them yet. Assign all section symbols type ST_DATA. */
4299 if (sym->flags & BSF_SECTION_SYM)
4300 info->symbol_type = ST_DATA;
4301 else
4302 {
4303 /* For BFD style common, the linker will choke unless we set the
4304 type and scope to ST_STORAGE and SS_UNSAT, respectively. */
4305 if (bfd_is_com_section (sym->section))
4306 {
4307 info->symbol_type = ST_STORAGE;
4308 info->symbol_scope = SS_UNSAT;
4309 }
4310
4311 /* It is possible to have a symbol without an associated
4312 type. This happens if the user imported the symbol
4313 without a type and the symbol was never defined
4314 locally. If BSF_FUNCTION is set for this symbol, then
4315 assign it type ST_CODE (the HP linker requires undefined
4316 external functions to have type ST_CODE rather than ST_ENTRY). */
4317 else if ((som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN
4318 || som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE)
4319 && bfd_is_und_section (sym->section)
4320 && sym->flags & BSF_FUNCTION)
4321 info->symbol_type = ST_CODE;
4322
4323 /* Handle function symbols which were defined in this file.
4324 They should have type ST_ENTRY. Also retrieve the argument
4325 relocation bits from the SOM backend information. */
4326 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ENTRY
4327 || (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE
4328 && (sym->flags & BSF_FUNCTION))
4329 || (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN
4330 && (sym->flags & BSF_FUNCTION)))
4331 {
4332 info->symbol_type = ST_ENTRY;
4333 info->arg_reloc = som_symbol_data (sym)->tc_data.ap.hppa_arg_reloc;
4334 info->priv_level= som_symbol_data (sym)->tc_data.ap.hppa_priv_level;
4335 }
4336
4337 /* For unknown symbols set the symbol's type based on the symbol's
4338 section (ST_DATA for DATA sections, ST_CODE for CODE sections). */
4339 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN)
4340 {
4341 if (bfd_is_abs_section (sym->section))
4342 info->symbol_type = ST_ABSOLUTE;
4343 else if (sym->section->flags & SEC_CODE)
4344 info->symbol_type = ST_CODE;
4345 else
4346 info->symbol_type = ST_DATA;
4347 }
4348
4349 /* From now on it's a very simple mapping. */
4350 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ABSOLUTE)
4351 info->symbol_type = ST_ABSOLUTE;
4352 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE)
4353 info->symbol_type = ST_CODE;
4354 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_DATA)
4355 info->symbol_type = ST_DATA;
4356 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_MILLICODE)
4357 info->symbol_type = ST_MILLICODE;
4358 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PLABEL)
4359 info->symbol_type = ST_PLABEL;
4360 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PRI_PROG)
4361 info->symbol_type = ST_PRI_PROG;
4362 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_SEC_PROG)
4363 info->symbol_type = ST_SEC_PROG;
4364 }
4365
4366 /* Now handle the symbol's scope. Exported data which is not
4367 in the common section has scope SS_UNIVERSAL. Note scope
4368 of common symbols was handled earlier! */
4369 if (bfd_is_com_section (sym->section))
4370 ;
4371 else if (bfd_is_und_section (sym->section))
4372 info->symbol_scope = SS_UNSAT;
4373 else if (sym->flags & (BSF_EXPORT | BSF_WEAK))
4374 info->symbol_scope = SS_UNIVERSAL;
4375 /* Anything else which is not in the common section has scope
4376 SS_LOCAL. */
4377 else
4378 info->symbol_scope = SS_LOCAL;
4379
4380 /* Now set the symbol_info field. It has no real meaning
4381 for undefined or common symbols, but the HP linker will
4382 choke if it's not set to some "reasonable" value. We
4383 use zero as a reasonable value. */
4384 if (bfd_is_com_section (sym->section)
4385 || bfd_is_und_section (sym->section)
4386 || bfd_is_abs_section (sym->section))
4387 info->symbol_info = 0;
4388 /* For all other symbols, the symbol_info field contains the
4389 subspace index of the space this symbol is contained in. */
4390 else
4391 info->symbol_info = sym->section->target_index;
4392
4393 /* Set the symbol's value. */
4394 info->symbol_value = sym->value + sym->section->vma;
4395
4396 /* The secondary_def field is for "weak" symbols. */
4397 if (sym->flags & BSF_WEAK)
4398 info->secondary_def = TRUE;
4399 else
4400 info->secondary_def = FALSE;
4401
4402 /* The is_comdat, is_common and dup_common fields provide various
4403 flavors of common.
4404
4405 For data symbols, setting IS_COMMON provides Fortran style common
4406 (duplicate definitions and overlapped initialization). Setting both
4407 IS_COMMON and DUP_COMMON provides Cobol style common (duplicate
4408 definitions as long as they are all the same length). In a shared
4409 link data symbols retain their IS_COMMON and DUP_COMMON flags.
4410 An IS_COMDAT data symbol is similar to a IS_COMMON | DUP_COMMON
4411 symbol except in that it loses its IS_COMDAT flag in a shared link.
4412
4413 For code symbols, IS_COMDAT and DUP_COMMON have effect. Universal
4414 DUP_COMMON code symbols are not exported from shared libraries.
4415 IS_COMDAT symbols are exported but they lose their IS_COMDAT flag.
4416
4417 We take a simplified approach to setting the is_comdat, is_common
4418 and dup_common flags in symbols based on the flag settings of their
4419 subspace. This avoids having to add directives like `.comdat' but
4420 the linker behavior is probably undefined if there is more than one
4421 universal symbol (comdat key sysmbol) in a subspace.
4422
4423 The behavior of these flags is not well documentmented, so there
4424 may be bugs and some surprising interactions with other flags. */
4425 if (som_section_data (sym->section)
4426 && som_section_data (sym->section)->subspace_dict
4427 && info->symbol_scope == SS_UNIVERSAL
4428 && (info->symbol_type == ST_ENTRY
4429 || info->symbol_type == ST_CODE
4430 || info->symbol_type == ST_DATA))
4431 {
4432 info->is_comdat
4433 = som_section_data (sym->section)->subspace_dict->is_comdat;
4434 info->is_common
4435 = som_section_data (sym->section)->subspace_dict->is_common;
4436 info->dup_common
4437 = som_section_data (sym->section)->subspace_dict->dup_common;
4438 }
4439 }
4440
4441 /* Build and write, in one big chunk, the entire symbol table for
4442 this BFD. */
4443
4444 static bfd_boolean
som_build_and_write_symbol_table(bfd * abfd)4445 som_build_and_write_symbol_table (bfd *abfd)
4446 {
4447 unsigned int num_syms = bfd_get_symcount (abfd);
4448 file_ptr symtab_location = obj_som_file_hdr (abfd)->symbol_location;
4449 asymbol **bfd_syms = obj_som_sorted_syms (abfd);
4450 struct som_external_symbol_dictionary_record *som_symtab = NULL;
4451 unsigned int i;
4452 bfd_size_type symtab_size;
4453
4454 /* Compute total symbol table size and allocate a chunk of memory
4455 to hold the symbol table as we build it. */
4456 symtab_size = num_syms;
4457 symtab_size *= sizeof (struct som_external_symbol_dictionary_record);
4458 som_symtab = bfd_zmalloc (symtab_size);
4459 if (som_symtab == NULL && symtab_size != 0)
4460 goto error_return;
4461
4462 /* Walk over each symbol. */
4463 for (i = 0; i < num_syms; i++)
4464 {
4465 struct som_misc_symbol_info info;
4466 unsigned int flags;
4467
4468 /* This is really an index into the symbol strings table.
4469 By the time we get here, the index has already been
4470 computed and stored into the name field in the BFD symbol. */
4471 bfd_putb32 (som_symbol_data (bfd_syms[i])->stringtab_offset,
4472 som_symtab[i].name);
4473
4474 /* Derive SOM information from the BFD symbol. */
4475 som_bfd_derive_misc_symbol_info (abfd, bfd_syms[i], &info);
4476
4477 /* Now use it. */
4478 flags = (info.symbol_type << SOM_SYMBOL_TYPE_SH)
4479 | (info.symbol_scope << SOM_SYMBOL_SCOPE_SH)
4480 | (info.arg_reloc << SOM_SYMBOL_ARG_RELOC_SH)
4481 | (3 << SOM_SYMBOL_XLEAST_SH)
4482 | (info.secondary_def ? SOM_SYMBOL_SECONDARY_DEF : 0)
4483 | (info.is_common ? SOM_SYMBOL_IS_COMMON : 0)
4484 | (info.dup_common ? SOM_SYMBOL_DUP_COMMON : 0);
4485 bfd_putb32 (flags, som_symtab[i].flags);
4486
4487 flags = (info.symbol_info << SOM_SYMBOL_SYMBOL_INFO_SH)
4488 | (info.is_comdat ? SOM_SYMBOL_IS_COMDAT : 0);
4489 bfd_putb32 (flags, som_symtab[i].info);
4490 bfd_putb32 (info.symbol_value | info.priv_level,
4491 som_symtab[i].symbol_value);
4492 }
4493
4494 /* Everything is ready, seek to the right location and
4495 scribble out the symbol table. */
4496 if (bfd_seek (abfd, symtab_location, SEEK_SET) != 0)
4497 return FALSE;
4498
4499 if (bfd_bwrite ((void *) som_symtab, symtab_size, abfd) != symtab_size)
4500 goto error_return;
4501
4502 if (som_symtab != NULL)
4503 free (som_symtab);
4504 return TRUE;
4505 error_return:
4506 if (som_symtab != NULL)
4507 free (som_symtab);
4508 return FALSE;
4509 }
4510
4511 /* Write an object in SOM format. */
4512
4513 static bfd_boolean
som_write_object_contents(bfd * abfd)4514 som_write_object_contents (bfd *abfd)
4515 {
4516 if (! abfd->output_has_begun)
4517 {
4518 /* Set up fixed parts of the file, space, and subspace headers.
4519 Notify the world that output has begun. */
4520 som_prep_headers (abfd);
4521 abfd->output_has_begun = TRUE;
4522 /* Start writing the object file. This include all the string
4523 tables, fixup streams, and other portions of the object file. */
4524 som_begin_writing (abfd);
4525 }
4526
4527 return som_finish_writing (abfd);
4528 }
4529
4530 /* Read and save the string table associated with the given BFD. */
4531
4532 static bfd_boolean
som_slurp_string_table(bfd * abfd)4533 som_slurp_string_table (bfd *abfd)
4534 {
4535 char *stringtab;
4536 bfd_size_type amt;
4537
4538 /* Use the saved version if its available. */
4539 if (obj_som_stringtab (abfd) != NULL)
4540 return TRUE;
4541
4542 /* I don't think this can currently happen, and I'm not sure it should
4543 really be an error, but it's better than getting unpredictable results
4544 from the host's malloc when passed a size of zero. */
4545 if (obj_som_stringtab_size (abfd) == 0)
4546 {
4547 bfd_set_error (bfd_error_no_symbols);
4548 return FALSE;
4549 }
4550
4551 /* Allocate and read in the string table. */
4552 amt = obj_som_stringtab_size (abfd);
4553 stringtab = bfd_zmalloc (amt);
4554 if (stringtab == NULL)
4555 return FALSE;
4556
4557 if (bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET) != 0)
4558 return FALSE;
4559
4560 if (bfd_bread (stringtab, amt, abfd) != amt)
4561 return FALSE;
4562
4563 /* Save our results and return success. */
4564 obj_som_stringtab (abfd) = stringtab;
4565 return TRUE;
4566 }
4567
4568 /* Return the amount of data (in bytes) required to hold the symbol
4569 table for this object. */
4570
4571 static long
som_get_symtab_upper_bound(bfd * abfd)4572 som_get_symtab_upper_bound (bfd *abfd)
4573 {
4574 if (!som_slurp_symbol_table (abfd))
4575 return -1;
4576
4577 return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *);
4578 }
4579
4580 /* Convert from a SOM subspace index to a BFD section. */
4581
4582 asection *
bfd_section_from_som_symbol(bfd * abfd,struct som_external_symbol_dictionary_record * symbol)4583 bfd_section_from_som_symbol
4584 (bfd *abfd, struct som_external_symbol_dictionary_record *symbol)
4585 {
4586 asection *section;
4587 unsigned int flags = bfd_getb32 (symbol->flags);
4588 unsigned int symbol_type = (flags >> SOM_SYMBOL_TYPE_SH) & SOM_SYMBOL_TYPE_MASK;
4589
4590 /* The meaning of the symbol_info field changes for functions
4591 within executables. So only use the quick symbol_info mapping for
4592 incomplete objects and non-function symbols in executables. */
4593 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0
4594 || (symbol_type != ST_ENTRY
4595 && symbol_type != ST_PRI_PROG
4596 && symbol_type != ST_SEC_PROG
4597 && symbol_type != ST_MILLICODE))
4598 {
4599 int idx = (bfd_getb32 (symbol->info) >> SOM_SYMBOL_SYMBOL_INFO_SH)
4600 & SOM_SYMBOL_SYMBOL_INFO_MASK;
4601
4602 for (section = abfd->sections; section != NULL; section = section->next)
4603 if (section->target_index == idx && som_is_subspace (section))
4604 return section;
4605 }
4606 else
4607 {
4608 unsigned int value = bfd_getb32 (symbol->symbol_value);
4609
4610 /* For executables we will have to use the symbol's address and
4611 find out what section would contain that address. Yuk. */
4612 for (section = abfd->sections; section; section = section->next)
4613 if (value >= section->vma
4614 && value <= section->vma + section->size
4615 && som_is_subspace (section))
4616 return section;
4617 }
4618
4619 /* Could be a symbol from an external library (such as an OMOS
4620 shared library). Don't abort. */
4621 return bfd_abs_section_ptr;
4622 }
4623
4624 /* Read and save the symbol table associated with the given BFD. */
4625
4626 static unsigned int
som_slurp_symbol_table(bfd * abfd)4627 som_slurp_symbol_table (bfd *abfd)
4628 {
4629 int symbol_count = bfd_get_symcount (abfd);
4630 int symsize = sizeof (struct som_external_symbol_dictionary_record);
4631 char *stringtab;
4632 struct som_external_symbol_dictionary_record *buf = NULL, *bufp, *endbufp;
4633 som_symbol_type *sym, *symbase;
4634 bfd_size_type amt;
4635
4636 /* Return saved value if it exists. */
4637 if (obj_som_symtab (abfd) != NULL)
4638 goto successful_return;
4639
4640 /* Special case. This is *not* an error. */
4641 if (symbol_count == 0)
4642 goto successful_return;
4643
4644 if (!som_slurp_string_table (abfd))
4645 goto error_return;
4646
4647 stringtab = obj_som_stringtab (abfd);
4648
4649 amt = symbol_count;
4650 amt *= sizeof (som_symbol_type);
4651 symbase = bfd_zmalloc (amt);
4652 if (symbase == NULL)
4653 goto error_return;
4654
4655 /* Read in the external SOM representation. */
4656 amt = symbol_count;
4657 amt *= symsize;
4658 buf = bfd_malloc (amt);
4659 if (buf == NULL && amt != 0)
4660 goto error_return;
4661 if (bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET) != 0)
4662 goto error_return;
4663 if (bfd_bread (buf, amt, abfd) != amt)
4664 goto error_return;
4665
4666 /* Iterate over all the symbols and internalize them. */
4667 endbufp = buf + symbol_count;
4668 for (bufp = buf, sym = symbase; bufp < endbufp; ++bufp)
4669 {
4670 unsigned int flags = bfd_getb32 (bufp->flags);
4671 unsigned int symbol_type =
4672 (flags >> SOM_SYMBOL_TYPE_SH) & SOM_SYMBOL_TYPE_MASK;
4673 unsigned int symbol_scope =
4674 (flags >> SOM_SYMBOL_SCOPE_SH) & SOM_SYMBOL_SCOPE_MASK;
4675
4676 /* I don't think we care about these. */
4677 if (symbol_type == ST_SYM_EXT || symbol_type == ST_ARG_EXT)
4678 continue;
4679
4680 /* Set some private data we care about. */
4681 if (symbol_type == ST_NULL)
4682 som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN;
4683 else if (symbol_type == ST_ABSOLUTE)
4684 som_symbol_data (sym)->som_type = SYMBOL_TYPE_ABSOLUTE;
4685 else if (symbol_type == ST_DATA)
4686 som_symbol_data (sym)->som_type = SYMBOL_TYPE_DATA;
4687 else if (symbol_type == ST_CODE)
4688 som_symbol_data (sym)->som_type = SYMBOL_TYPE_CODE;
4689 else if (symbol_type == ST_PRI_PROG)
4690 som_symbol_data (sym)->som_type = SYMBOL_TYPE_PRI_PROG;
4691 else if (symbol_type == ST_SEC_PROG)
4692 som_symbol_data (sym)->som_type = SYMBOL_TYPE_SEC_PROG;
4693 else if (symbol_type == ST_ENTRY)
4694 som_symbol_data (sym)->som_type = SYMBOL_TYPE_ENTRY;
4695 else if (symbol_type == ST_MILLICODE)
4696 som_symbol_data (sym)->som_type = SYMBOL_TYPE_MILLICODE;
4697 else if (symbol_type == ST_PLABEL)
4698 som_symbol_data (sym)->som_type = SYMBOL_TYPE_PLABEL;
4699 else
4700 som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN;
4701 som_symbol_data (sym)->tc_data.ap.hppa_arg_reloc =
4702 (flags >> SOM_SYMBOL_ARG_RELOC_SH) & SOM_SYMBOL_ARG_RELOC_MASK;
4703
4704 /* Some reasonable defaults. */
4705 sym->symbol.the_bfd = abfd;
4706 sym->symbol.name = bfd_getb32 (bufp->name) + stringtab;
4707 sym->symbol.value = bfd_getb32 (bufp->symbol_value);
4708 sym->symbol.section = 0;
4709 sym->symbol.flags = 0;
4710
4711 switch (symbol_type)
4712 {
4713 case ST_ENTRY:
4714 case ST_MILLICODE:
4715 sym->symbol.flags |= BSF_FUNCTION;
4716 som_symbol_data (sym)->tc_data.ap.hppa_priv_level =
4717 sym->symbol.value & 0x3;
4718 sym->symbol.value &= ~0x3;
4719 break;
4720
4721 case ST_STUB:
4722 case ST_CODE:
4723 case ST_PRI_PROG:
4724 case ST_SEC_PROG:
4725 som_symbol_data (sym)->tc_data.ap.hppa_priv_level =
4726 sym->symbol.value & 0x3;
4727 sym->symbol.value &= ~0x3;
4728 /* If the symbol's scope is SS_UNSAT, then these are
4729 undefined function symbols. */
4730 if (symbol_scope == SS_UNSAT)
4731 sym->symbol.flags |= BSF_FUNCTION;
4732
4733 default:
4734 break;
4735 }
4736
4737 /* Handle scoping and section information. */
4738 switch (symbol_scope)
4739 {
4740 /* symbol_info field is undefined for SS_EXTERNAL and SS_UNSAT symbols,
4741 so the section associated with this symbol can't be known. */
4742 case SS_EXTERNAL:
4743 if (symbol_type != ST_STORAGE)
4744 sym->symbol.section = bfd_und_section_ptr;
4745 else
4746 sym->symbol.section = bfd_com_section_ptr;
4747 sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL);
4748 break;
4749
4750 case SS_UNSAT:
4751 if (symbol_type != ST_STORAGE)
4752 sym->symbol.section = bfd_und_section_ptr;
4753 else
4754 sym->symbol.section = bfd_com_section_ptr;
4755 break;
4756
4757 case SS_UNIVERSAL:
4758 sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL);
4759 sym->symbol.section = bfd_section_from_som_symbol (abfd, bufp);
4760 sym->symbol.value -= sym->symbol.section->vma;
4761 break;
4762
4763 case SS_LOCAL:
4764 sym->symbol.flags |= BSF_LOCAL;
4765 sym->symbol.section = bfd_section_from_som_symbol (abfd, bufp);
4766 sym->symbol.value -= sym->symbol.section->vma;
4767 break;
4768 }
4769
4770 /* Check for a weak symbol. */
4771 if (flags & SOM_SYMBOL_SECONDARY_DEF)
4772 sym->symbol.flags |= BSF_WEAK;
4773
4774 /* Mark section symbols and symbols used by the debugger.
4775 Note $START$ is a magic code symbol, NOT a section symbol. */
4776 if (sym->symbol.name[0] == '$'
4777 && sym->symbol.name[strlen (sym->symbol.name) - 1] == '$'
4778 && !strcmp (sym->symbol.name, sym->symbol.section->name))
4779 sym->symbol.flags |= BSF_SECTION_SYM;
4780 else if (CONST_STRNEQ (sym->symbol.name, "L$0\002"))
4781 {
4782 sym->symbol.flags |= BSF_SECTION_SYM;
4783 sym->symbol.name = sym->symbol.section->name;
4784 }
4785 else if (CONST_STRNEQ (sym->symbol.name, "L$0\001"))
4786 sym->symbol.flags |= BSF_DEBUGGING;
4787
4788 /* Note increment at bottom of loop, since we skip some symbols
4789 we can not include it as part of the for statement. */
4790 sym++;
4791 }
4792
4793 /* We modify the symbol count to record the number of BFD symbols we
4794 created. */
4795 bfd_get_symcount (abfd) = sym - symbase;
4796
4797 /* Save our results and return success. */
4798 obj_som_symtab (abfd) = symbase;
4799 successful_return:
4800 if (buf != NULL)
4801 free (buf);
4802 return (TRUE);
4803
4804 error_return:
4805 if (buf != NULL)
4806 free (buf);
4807 return FALSE;
4808 }
4809
4810 /* Canonicalize a SOM symbol table. Return the number of entries
4811 in the symbol table. */
4812
4813 static long
som_canonicalize_symtab(bfd * abfd,asymbol ** location)4814 som_canonicalize_symtab (bfd *abfd, asymbol **location)
4815 {
4816 int i;
4817 som_symbol_type *symbase;
4818
4819 if (!som_slurp_symbol_table (abfd))
4820 return -1;
4821
4822 i = bfd_get_symcount (abfd);
4823 symbase = obj_som_symtab (abfd);
4824
4825 for (; i > 0; i--, location++, symbase++)
4826 *location = &symbase->symbol;
4827
4828 /* Final null pointer. */
4829 *location = 0;
4830 return (bfd_get_symcount (abfd));
4831 }
4832
4833 /* Make a SOM symbol. There is nothing special to do here. */
4834
4835 static asymbol *
som_make_empty_symbol(bfd * abfd)4836 som_make_empty_symbol (bfd *abfd)
4837 {
4838 bfd_size_type amt = sizeof (som_symbol_type);
4839 som_symbol_type *new_symbol_type = bfd_zalloc (abfd, amt);
4840
4841 if (new_symbol_type == NULL)
4842 return NULL;
4843 new_symbol_type->symbol.the_bfd = abfd;
4844
4845 return &new_symbol_type->symbol;
4846 }
4847
4848 /* Print symbol information. */
4849
4850 static void
som_print_symbol(bfd * abfd,void * afile,asymbol * symbol,bfd_print_symbol_type how)4851 som_print_symbol (bfd *abfd,
4852 void *afile,
4853 asymbol *symbol,
4854 bfd_print_symbol_type how)
4855 {
4856 FILE *file = (FILE *) afile;
4857
4858 switch (how)
4859 {
4860 case bfd_print_symbol_name:
4861 fprintf (file, "%s", symbol->name);
4862 break;
4863 case bfd_print_symbol_more:
4864 fprintf (file, "som ");
4865 fprintf_vma (file, symbol->value);
4866 fprintf (file, " %lx", (long) symbol->flags);
4867 break;
4868 case bfd_print_symbol_all:
4869 {
4870 const char *section_name;
4871
4872 section_name = symbol->section ? symbol->section->name : "(*none*)";
4873 bfd_print_symbol_vandf (abfd, (void *) file, symbol);
4874 fprintf (file, " %s\t%s", section_name, symbol->name);
4875 break;
4876 }
4877 }
4878 }
4879
4880 static bfd_boolean
som_bfd_is_local_label_name(bfd * abfd ATTRIBUTE_UNUSED,const char * name)4881 som_bfd_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
4882 const char *name)
4883 {
4884 return name[0] == 'L' && name[1] == '$';
4885 }
4886
4887 /* Count or process variable-length SOM fixup records.
4888
4889 To avoid code duplication we use this code both to compute the number
4890 of relocations requested by a stream, and to internalize the stream.
4891
4892 When computing the number of relocations requested by a stream the
4893 variables rptr, section, and symbols have no meaning.
4894
4895 Return the number of relocations requested by the fixup stream. When
4896 not just counting
4897
4898 This needs at least two or three more passes to get it cleaned up. */
4899
4900 static unsigned int
som_set_reloc_info(unsigned char * fixup,unsigned int end,arelent * internal_relocs,asection * section,asymbol ** symbols,bfd_boolean just_count)4901 som_set_reloc_info (unsigned char *fixup,
4902 unsigned int end,
4903 arelent *internal_relocs,
4904 asection *section,
4905 asymbol **symbols,
4906 bfd_boolean just_count)
4907 {
4908 unsigned int op, varname, deallocate_contents = 0;
4909 unsigned char *end_fixups = &fixup[end];
4910 const struct fixup_format *fp;
4911 const char *cp;
4912 unsigned char *save_fixup;
4913 int variables[26], stack[20], c, v, count, prev_fixup, *sp, saved_unwind_bits;
4914 const int *subop;
4915 arelent *rptr = internal_relocs;
4916 unsigned int offset = 0;
4917
4918 #define var(c) variables[(c) - 'A']
4919 #define push(v) (*sp++ = (v))
4920 #define pop() (*--sp)
4921 #define emptystack() (sp == stack)
4922
4923 som_initialize_reloc_queue (reloc_queue);
4924 memset (variables, 0, sizeof (variables));
4925 memset (stack, 0, sizeof (stack));
4926 count = 0;
4927 prev_fixup = 0;
4928 saved_unwind_bits = 0;
4929 sp = stack;
4930
4931 while (fixup < end_fixups)
4932 {
4933 /* Save pointer to the start of this fixup. We'll use
4934 it later to determine if it is necessary to put this fixup
4935 on the queue. */
4936 save_fixup = fixup;
4937
4938 /* Get the fixup code and its associated format. */
4939 op = *fixup++;
4940 fp = &som_fixup_formats[op];
4941
4942 /* Handle a request for a previous fixup. */
4943 if (*fp->format == 'P')
4944 {
4945 /* Get pointer to the beginning of the prev fixup, move
4946 the repeated fixup to the head of the queue. */
4947 fixup = reloc_queue[fp->D].reloc;
4948 som_reloc_queue_fix (reloc_queue, fp->D);
4949 prev_fixup = 1;
4950
4951 /* Get the fixup code and its associated format. */
4952 op = *fixup++;
4953 fp = &som_fixup_formats[op];
4954 }
4955
4956 /* If this fixup will be passed to BFD, set some reasonable defaults. */
4957 if (! just_count
4958 && som_hppa_howto_table[op].type != R_NO_RELOCATION
4959 && som_hppa_howto_table[op].type != R_DATA_OVERRIDE)
4960 {
4961 rptr->address = offset;
4962 rptr->howto = &som_hppa_howto_table[op];
4963 rptr->addend = 0;
4964 rptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
4965 }
4966
4967 /* Set default input length to 0. Get the opcode class index
4968 into D. */
4969 var ('L') = 0;
4970 var ('D') = fp->D;
4971 var ('U') = saved_unwind_bits;
4972
4973 /* Get the opcode format. */
4974 cp = fp->format;
4975
4976 /* Process the format string. Parsing happens in two phases,
4977 parse RHS, then assign to LHS. Repeat until no more
4978 characters in the format string. */
4979 while (*cp)
4980 {
4981 /* The variable this pass is going to compute a value for. */
4982 varname = *cp++;
4983
4984 /* Start processing RHS. Continue until a NULL or '=' is found. */
4985 do
4986 {
4987 c = *cp++;
4988
4989 /* If this is a variable, push it on the stack. */
4990 if (ISUPPER (c))
4991 push (var (c));
4992
4993 /* If this is a lower case letter, then it represents
4994 additional data from the fixup stream to be pushed onto
4995 the stack. */
4996 else if (ISLOWER (c))
4997 {
4998 int bits = (c - 'a') * 8;
4999 for (v = 0; c > 'a'; --c)
5000 v = (v << 8) | *fixup++;
5001 if (varname == 'V')
5002 v = sign_extend (v, bits);
5003 push (v);
5004 }
5005
5006 /* A decimal constant. Push it on the stack. */
5007 else if (ISDIGIT (c))
5008 {
5009 v = c - '0';
5010 while (ISDIGIT (*cp))
5011 v = (v * 10) + (*cp++ - '0');
5012 push (v);
5013 }
5014 else
5015 /* An operator. Pop two values from the stack and
5016 use them as operands to the given operation. Push
5017 the result of the operation back on the stack. */
5018 switch (c)
5019 {
5020 case '+':
5021 v = pop ();
5022 v += pop ();
5023 push (v);
5024 break;
5025 case '*':
5026 v = pop ();
5027 v *= pop ();
5028 push (v);
5029 break;
5030 case '<':
5031 v = pop ();
5032 v = pop () << v;
5033 push (v);
5034 break;
5035 default:
5036 abort ();
5037 }
5038 }
5039 while (*cp && *cp != '=');
5040
5041 /* Move over the equal operator. */
5042 cp++;
5043
5044 /* Pop the RHS off the stack. */
5045 c = pop ();
5046
5047 /* Perform the assignment. */
5048 var (varname) = c;
5049
5050 /* Handle side effects. and special 'O' stack cases. */
5051 switch (varname)
5052 {
5053 /* Consume some bytes from the input space. */
5054 case 'L':
5055 offset += c;
5056 break;
5057 /* A symbol to use in the relocation. Make a note
5058 of this if we are not just counting. */
5059 case 'S':
5060 if (! just_count)
5061 rptr->sym_ptr_ptr = &symbols[c];
5062 break;
5063 /* Argument relocation bits for a function call. */
5064 case 'R':
5065 if (! just_count)
5066 {
5067 unsigned int tmp = var ('R');
5068 rptr->addend = 0;
5069
5070 if ((som_hppa_howto_table[op].type == R_PCREL_CALL
5071 && R_PCREL_CALL + 10 > op)
5072 || (som_hppa_howto_table[op].type == R_ABS_CALL
5073 && R_ABS_CALL + 10 > op))
5074 {
5075 /* Simple encoding. */
5076 if (tmp > 4)
5077 {
5078 tmp -= 5;
5079 rptr->addend |= 1;
5080 }
5081 if (tmp == 4)
5082 rptr->addend |= 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2;
5083 else if (tmp == 3)
5084 rptr->addend |= 1 << 8 | 1 << 6 | 1 << 4;
5085 else if (tmp == 2)
5086 rptr->addend |= 1 << 8 | 1 << 6;
5087 else if (tmp == 1)
5088 rptr->addend |= 1 << 8;
5089 }
5090 else
5091 {
5092 unsigned int tmp1, tmp2;
5093
5094 /* First part is easy -- low order two bits are
5095 directly copied, then shifted away. */
5096 rptr->addend = tmp & 0x3;
5097 tmp >>= 2;
5098
5099 /* Diving the result by 10 gives us the second
5100 part. If it is 9, then the first two words
5101 are a double precision paramater, else it is
5102 3 * the first arg bits + the 2nd arg bits. */
5103 tmp1 = tmp / 10;
5104 tmp -= tmp1 * 10;
5105 if (tmp1 == 9)
5106 rptr->addend += (0xe << 6);
5107 else
5108 {
5109 /* Get the two pieces. */
5110 tmp2 = tmp1 / 3;
5111 tmp1 -= tmp2 * 3;
5112 /* Put them in the addend. */
5113 rptr->addend += (tmp2 << 8) + (tmp1 << 6);
5114 }
5115
5116 /* What's left is the third part. It's unpacked
5117 just like the second. */
5118 if (tmp == 9)
5119 rptr->addend += (0xe << 2);
5120 else
5121 {
5122 tmp2 = tmp / 3;
5123 tmp -= tmp2 * 3;
5124 rptr->addend += (tmp2 << 4) + (tmp << 2);
5125 }
5126 }
5127 rptr->addend = HPPA_R_ADDEND (rptr->addend, 0);
5128 }
5129 break;
5130 /* Handle the linker expression stack. */
5131 case 'O':
5132 switch (op)
5133 {
5134 case R_COMP1:
5135 subop = comp1_opcodes;
5136 break;
5137 case R_COMP2:
5138 subop = comp2_opcodes;
5139 break;
5140 case R_COMP3:
5141 subop = comp3_opcodes;
5142 break;
5143 default:
5144 abort ();
5145 }
5146 while (*subop <= (unsigned char) c)
5147 ++subop;
5148 --subop;
5149 break;
5150 /* The lower 32unwind bits must be persistent. */
5151 case 'U':
5152 saved_unwind_bits = var ('U');
5153 break;
5154
5155 default:
5156 break;
5157 }
5158 }
5159
5160 /* If we used a previous fixup, clean up after it. */
5161 if (prev_fixup)
5162 {
5163 fixup = save_fixup + 1;
5164 prev_fixup = 0;
5165 }
5166 /* Queue it. */
5167 else if (fixup > save_fixup + 1)
5168 som_reloc_queue_insert (save_fixup, fixup - save_fixup, reloc_queue);
5169
5170 /* We do not pass R_DATA_OVERRIDE or R_NO_RELOCATION
5171 fixups to BFD. */
5172 if (som_hppa_howto_table[op].type != R_DATA_OVERRIDE
5173 && som_hppa_howto_table[op].type != R_NO_RELOCATION)
5174 {
5175 /* Done with a single reloction. Loop back to the top. */
5176 if (! just_count)
5177 {
5178 if (som_hppa_howto_table[op].type == R_ENTRY)
5179 rptr->addend = var ('T');
5180 else if (som_hppa_howto_table[op].type == R_EXIT)
5181 rptr->addend = var ('U');
5182 else if (som_hppa_howto_table[op].type == R_PCREL_CALL
5183 || som_hppa_howto_table[op].type == R_ABS_CALL)
5184 ;
5185 else if (som_hppa_howto_table[op].type == R_DATA_ONE_SYMBOL)
5186 {
5187 /* Try what was specified in R_DATA_OVERRIDE first
5188 (if anything). Then the hard way using the
5189 section contents. */
5190 rptr->addend = var ('V');
5191
5192 if (rptr->addend == 0 && !section->contents)
5193 {
5194 /* Got to read the damn contents first. We don't
5195 bother saving the contents (yet). Add it one
5196 day if the need arises. */
5197 bfd_byte *contents;
5198 if (!bfd_malloc_and_get_section (section->owner, section,
5199 &contents))
5200 {
5201 if (contents != NULL)
5202 free (contents);
5203 return (unsigned) -1;
5204 }
5205 section->contents = contents;
5206 deallocate_contents = 1;
5207 }
5208 else if (rptr->addend == 0)
5209 rptr->addend = bfd_get_32 (section->owner,
5210 (section->contents
5211 + offset - var ('L')));
5212
5213 }
5214 else
5215 rptr->addend = var ('V');
5216 rptr++;
5217 }
5218 count++;
5219 /* Now that we've handled a "full" relocation, reset
5220 some state. */
5221 memset (variables, 0, sizeof (variables));
5222 memset (stack, 0, sizeof (stack));
5223 }
5224 }
5225 if (deallocate_contents)
5226 free (section->contents);
5227
5228 return count;
5229
5230 #undef var
5231 #undef push
5232 #undef pop
5233 #undef emptystack
5234 }
5235
5236 /* Read in the relocs (aka fixups in SOM terms) for a section.
5237
5238 som_get_reloc_upper_bound calls this routine with JUST_COUNT
5239 set to TRUE to indicate it only needs a count of the number
5240 of actual relocations. */
5241
5242 static bfd_boolean
som_slurp_reloc_table(bfd * abfd,asection * section,asymbol ** symbols,bfd_boolean just_count)5243 som_slurp_reloc_table (bfd *abfd,
5244 asection *section,
5245 asymbol **symbols,
5246 bfd_boolean just_count)
5247 {
5248 unsigned char *external_relocs;
5249 unsigned int fixup_stream_size;
5250 arelent *internal_relocs;
5251 unsigned int num_relocs;
5252 bfd_size_type amt;
5253
5254 fixup_stream_size = som_section_data (section)->reloc_size;
5255 /* If there were no relocations, then there is nothing to do. */
5256 if (section->reloc_count == 0)
5257 return TRUE;
5258
5259 /* If reloc_count is -1, then the relocation stream has not been
5260 parsed. We must do so now to know how many relocations exist. */
5261 if (section->reloc_count == (unsigned) -1)
5262 {
5263 amt = fixup_stream_size;
5264 external_relocs = bfd_malloc (amt);
5265 if (external_relocs == NULL)
5266 return FALSE;
5267 /* Read in the external forms. */
5268 if (bfd_seek (abfd,
5269 obj_som_reloc_filepos (abfd) + section->rel_filepos,
5270 SEEK_SET)
5271 != 0)
5272 return FALSE;
5273 if (bfd_bread (external_relocs, amt, abfd) != amt)
5274 return FALSE;
5275
5276 /* Let callers know how many relocations found.
5277 also save the relocation stream as we will
5278 need it again. */
5279 section->reloc_count = som_set_reloc_info (external_relocs,
5280 fixup_stream_size,
5281 NULL, NULL, NULL, TRUE);
5282
5283 som_section_data (section)->reloc_stream = external_relocs;
5284 }
5285
5286 /* If the caller only wanted a count, then return now. */
5287 if (just_count)
5288 return TRUE;
5289
5290 num_relocs = section->reloc_count;
5291 external_relocs = som_section_data (section)->reloc_stream;
5292 /* Return saved information about the relocations if it is available. */
5293 if (section->relocation != NULL)
5294 return TRUE;
5295
5296 amt = num_relocs;
5297 amt *= sizeof (arelent);
5298 internal_relocs = bfd_zalloc (abfd, (amt));
5299 if (internal_relocs == NULL)
5300 return FALSE;
5301
5302 /* Process and internalize the relocations. */
5303 som_set_reloc_info (external_relocs, fixup_stream_size,
5304 internal_relocs, section, symbols, FALSE);
5305
5306 /* We're done with the external relocations. Free them. */
5307 free (external_relocs);
5308 som_section_data (section)->reloc_stream = NULL;
5309
5310 /* Save our results and return success. */
5311 section->relocation = internal_relocs;
5312 return TRUE;
5313 }
5314
5315 /* Return the number of bytes required to store the relocation
5316 information associated with the given section. */
5317
5318 static long
som_get_reloc_upper_bound(bfd * abfd,sec_ptr asect)5319 som_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
5320 {
5321 /* If section has relocations, then read in the relocation stream
5322 and parse it to determine how many relocations exist. */
5323 if (asect->flags & SEC_RELOC)
5324 {
5325 if (! som_slurp_reloc_table (abfd, asect, NULL, TRUE))
5326 return -1;
5327 return (asect->reloc_count + 1) * sizeof (arelent *);
5328 }
5329
5330 /* There are no relocations. Return enough space to hold the
5331 NULL pointer which will be installed if som_canonicalize_reloc
5332 is called. */
5333 return sizeof (arelent *);
5334 }
5335
5336 /* Convert relocations from SOM (external) form into BFD internal
5337 form. Return the number of relocations. */
5338
5339 static long
som_canonicalize_reloc(bfd * abfd,sec_ptr section,arelent ** relptr,asymbol ** symbols)5340 som_canonicalize_reloc (bfd *abfd,
5341 sec_ptr section,
5342 arelent **relptr,
5343 asymbol **symbols)
5344 {
5345 arelent *tblptr;
5346 int count;
5347
5348 if (! som_slurp_reloc_table (abfd, section, symbols, FALSE))
5349 return -1;
5350
5351 count = section->reloc_count;
5352 tblptr = section->relocation;
5353
5354 while (count--)
5355 *relptr++ = tblptr++;
5356
5357 *relptr = NULL;
5358 return section->reloc_count;
5359 }
5360
5361 extern const bfd_target hppa_som_vec;
5362
5363 /* A hook to set up object file dependent section information. */
5364
5365 static bfd_boolean
som_new_section_hook(bfd * abfd,asection * newsect)5366 som_new_section_hook (bfd *abfd, asection *newsect)
5367 {
5368 if (!newsect->used_by_bfd)
5369 {
5370 bfd_size_type amt = sizeof (struct som_section_data_struct);
5371
5372 newsect->used_by_bfd = bfd_zalloc (abfd, amt);
5373 if (!newsect->used_by_bfd)
5374 return FALSE;
5375 }
5376 newsect->alignment_power = 3;
5377
5378 /* We allow more than three sections internally. */
5379 return _bfd_generic_new_section_hook (abfd, newsect);
5380 }
5381
5382 /* Copy any private info we understand from the input symbol
5383 to the output symbol. */
5384
5385 static bfd_boolean
som_bfd_copy_private_symbol_data(bfd * ibfd,asymbol * isymbol,bfd * obfd,asymbol * osymbol)5386 som_bfd_copy_private_symbol_data (bfd *ibfd,
5387 asymbol *isymbol,
5388 bfd *obfd,
5389 asymbol *osymbol)
5390 {
5391 struct som_symbol *input_symbol = (struct som_symbol *) isymbol;
5392 struct som_symbol *output_symbol = (struct som_symbol *) osymbol;
5393
5394 /* One day we may try to grok other private data. */
5395 if (ibfd->xvec->flavour != bfd_target_som_flavour
5396 || obfd->xvec->flavour != bfd_target_som_flavour)
5397 return FALSE;
5398
5399 /* The only private information we need to copy is the argument relocation
5400 bits. */
5401 output_symbol->tc_data.ap.hppa_arg_reloc =
5402 input_symbol->tc_data.ap.hppa_arg_reloc;
5403
5404 return TRUE;
5405 }
5406
5407 /* Copy any private info we understand from the input section
5408 to the output section. */
5409
5410 static bfd_boolean
som_bfd_copy_private_section_data(bfd * ibfd,asection * isection,bfd * obfd,asection * osection)5411 som_bfd_copy_private_section_data (bfd *ibfd,
5412 asection *isection,
5413 bfd *obfd,
5414 asection *osection)
5415 {
5416 bfd_size_type amt;
5417
5418 /* One day we may try to grok other private data. */
5419 if (ibfd->xvec->flavour != bfd_target_som_flavour
5420 || obfd->xvec->flavour != bfd_target_som_flavour
5421 || (!som_is_space (isection) && !som_is_subspace (isection)))
5422 return TRUE;
5423
5424 amt = sizeof (struct som_copyable_section_data_struct);
5425 som_section_data (osection)->copy_data = bfd_zalloc (obfd, amt);
5426 if (som_section_data (osection)->copy_data == NULL)
5427 return FALSE;
5428
5429 memcpy (som_section_data (osection)->copy_data,
5430 som_section_data (isection)->copy_data,
5431 sizeof (struct som_copyable_section_data_struct));
5432
5433 /* Reparent if necessary. */
5434 if (som_section_data (osection)->copy_data->container)
5435 som_section_data (osection)->copy_data->container =
5436 som_section_data (osection)->copy_data->container->output_section;
5437
5438 return TRUE;
5439 }
5440
5441 /* Copy any private info we understand from the input bfd
5442 to the output bfd. */
5443
5444 static bfd_boolean
som_bfd_copy_private_bfd_data(bfd * ibfd,bfd * obfd)5445 som_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
5446 {
5447 /* One day we may try to grok other private data. */
5448 if (ibfd->xvec->flavour != bfd_target_som_flavour
5449 || obfd->xvec->flavour != bfd_target_som_flavour)
5450 return TRUE;
5451
5452 /* Allocate some memory to hold the data we need. */
5453 obj_som_exec_data (obfd) = bfd_zalloc (obfd, (bfd_size_type) sizeof (struct som_exec_data));
5454 if (obj_som_exec_data (obfd) == NULL)
5455 return FALSE;
5456
5457 /* Now copy the data. */
5458 memcpy (obj_som_exec_data (obfd), obj_som_exec_data (ibfd),
5459 sizeof (struct som_exec_data));
5460
5461 return TRUE;
5462 }
5463
5464 /* Display the SOM header. */
5465
5466 static bfd_boolean
som_bfd_print_private_bfd_data(bfd * abfd,void * farg)5467 som_bfd_print_private_bfd_data (bfd *abfd, void *farg)
5468 {
5469 struct som_exec_auxhdr *exec_header;
5470 struct som_aux_id* auxhdr;
5471 FILE *f;
5472
5473 f = (FILE *) farg;
5474
5475 exec_header = obj_som_exec_hdr (abfd);
5476 if (exec_header)
5477 {
5478 fprintf (f, _("\nExec Auxiliary Header\n"));
5479 fprintf (f, " flags ");
5480 auxhdr = &exec_header->som_auxhdr;
5481 if (auxhdr->mandatory)
5482 fprintf (f, "mandatory ");
5483 if (auxhdr->copy)
5484 fprintf (f, "copy ");
5485 if (auxhdr->append)
5486 fprintf (f, "append ");
5487 if (auxhdr->ignore)
5488 fprintf (f, "ignore ");
5489 fprintf (f, "\n");
5490 fprintf (f, " type %#x\n", auxhdr->type);
5491 fprintf (f, " length %#x\n", auxhdr->length);
5492
5493 /* Note that, depending on the HP-UX version, the following fields can be
5494 either ints, or longs. */
5495
5496 fprintf (f, " text size %#lx\n", (long) exec_header->exec_tsize);
5497 fprintf (f, " text memory offset %#lx\n", (long) exec_header->exec_tmem);
5498 fprintf (f, " text file offset %#lx\n", (long) exec_header->exec_tfile);
5499 fprintf (f, " data size %#lx\n", (long) exec_header->exec_dsize);
5500 fprintf (f, " data memory offset %#lx\n", (long) exec_header->exec_dmem);
5501 fprintf (f, " data file offset %#lx\n", (long) exec_header->exec_dfile);
5502 fprintf (f, " bss size %#lx\n", (long) exec_header->exec_bsize);
5503 fprintf (f, " entry point %#lx\n", (long) exec_header->exec_entry);
5504 fprintf (f, " loader flags %#lx\n", (long) exec_header->exec_flags);
5505 fprintf (f, " bss initializer %#lx\n", (long) exec_header->exec_bfill);
5506 }
5507
5508 return TRUE;
5509 }
5510
5511 /* Set backend info for sections which can not be described
5512 in the BFD data structures. */
5513
5514 bfd_boolean
bfd_som_set_section_attributes(asection * section,int defined,int private,unsigned int sort_key,int spnum)5515 bfd_som_set_section_attributes (asection *section,
5516 int defined,
5517 int private,
5518 unsigned int sort_key,
5519 int spnum)
5520 {
5521 /* Allocate memory to hold the magic information. */
5522 if (som_section_data (section)->copy_data == NULL)
5523 {
5524 bfd_size_type amt = sizeof (struct som_copyable_section_data_struct);
5525
5526 som_section_data (section)->copy_data = bfd_zalloc (section->owner, amt);
5527 if (som_section_data (section)->copy_data == NULL)
5528 return FALSE;
5529 }
5530 som_section_data (section)->copy_data->sort_key = sort_key;
5531 som_section_data (section)->copy_data->is_defined = defined;
5532 som_section_data (section)->copy_data->is_private = private;
5533 som_section_data (section)->copy_data->container = section;
5534 som_section_data (section)->copy_data->space_number = spnum;
5535 return TRUE;
5536 }
5537
5538 /* Set backend info for subsections which can not be described
5539 in the BFD data structures. */
5540
5541 bfd_boolean
bfd_som_set_subsection_attributes(asection * section,asection * container,int access_ctr,unsigned int sort_key,int quadrant,int comdat,int common,int dup_common)5542 bfd_som_set_subsection_attributes (asection *section,
5543 asection *container,
5544 int access_ctr,
5545 unsigned int sort_key,
5546 int quadrant,
5547 int comdat,
5548 int common,
5549 int dup_common)
5550 {
5551 /* Allocate memory to hold the magic information. */
5552 if (som_section_data (section)->copy_data == NULL)
5553 {
5554 bfd_size_type amt = sizeof (struct som_copyable_section_data_struct);
5555
5556 som_section_data (section)->copy_data = bfd_zalloc (section->owner, amt);
5557 if (som_section_data (section)->copy_data == NULL)
5558 return FALSE;
5559 }
5560 som_section_data (section)->copy_data->sort_key = sort_key;
5561 som_section_data (section)->copy_data->access_control_bits = access_ctr;
5562 som_section_data (section)->copy_data->quadrant = quadrant;
5563 som_section_data (section)->copy_data->container = container;
5564 som_section_data (section)->copy_data->is_comdat = comdat;
5565 som_section_data (section)->copy_data->is_common = common;
5566 som_section_data (section)->copy_data->dup_common = dup_common;
5567 return TRUE;
5568 }
5569
5570 /* Set the full SOM symbol type. SOM needs far more symbol information
5571 than any other object file format I'm aware of. It is mandatory
5572 to be able to know if a symbol is an entry point, millicode, data,
5573 code, absolute, storage request, or procedure label. If you get
5574 the symbol type wrong your program will not link. */
5575
5576 void
bfd_som_set_symbol_type(asymbol * symbol,unsigned int type)5577 bfd_som_set_symbol_type (asymbol *symbol, unsigned int type)
5578 {
5579 som_symbol_data (symbol)->som_type = type;
5580 }
5581
5582 /* Attach an auxiliary header to the BFD backend so that it may be
5583 written into the object file. */
5584
5585 bfd_boolean
bfd_som_attach_aux_hdr(bfd * abfd,int type,char * string)5586 bfd_som_attach_aux_hdr (bfd *abfd, int type, char *string)
5587 {
5588 bfd_size_type amt;
5589
5590 if (type == VERSION_AUX_ID)
5591 {
5592 size_t len = strlen (string);
5593 int pad = 0;
5594
5595 if (len % 4)
5596 pad = (4 - (len % 4));
5597 amt = sizeof (struct som_string_auxhdr) + len + pad;
5598 obj_som_version_hdr (abfd) = bfd_zalloc (abfd, amt);
5599 if (!obj_som_version_hdr (abfd))
5600 return FALSE;
5601 obj_som_version_hdr (abfd)->header_id.type = VERSION_AUX_ID;
5602 obj_som_version_hdr (abfd)->header_id.length = 4 + len + pad;
5603 obj_som_version_hdr (abfd)->string_length = len;
5604 memcpy (obj_som_version_hdr (abfd)->string, string, len);
5605 memset (obj_som_version_hdr (abfd)->string + len, 0, pad);
5606 }
5607 else if (type == COPYRIGHT_AUX_ID)
5608 {
5609 int len = strlen (string);
5610 int pad = 0;
5611
5612 if (len % 4)
5613 pad = (4 - (len % 4));
5614 amt = sizeof (struct som_string_auxhdr) + len + pad;
5615 obj_som_copyright_hdr (abfd) = bfd_zalloc (abfd, amt);
5616 if (!obj_som_copyright_hdr (abfd))
5617 return FALSE;
5618 obj_som_copyright_hdr (abfd)->header_id.type = COPYRIGHT_AUX_ID;
5619 obj_som_copyright_hdr (abfd)->header_id.length = len + pad + 4;
5620 obj_som_copyright_hdr (abfd)->string_length = len;
5621 memcpy (obj_som_copyright_hdr (abfd)->string, string, len);
5622 memset (obj_som_copyright_hdr (abfd)->string + len, 0, pad);
5623 }
5624 return TRUE;
5625 }
5626
5627 /* Attach a compilation unit header to the BFD backend so that it may be
5628 written into the object file. */
5629
5630 bfd_boolean
bfd_som_attach_compilation_unit(bfd * abfd,const char * name,const char * language_name,const char * product_id,const char * version_id)5631 bfd_som_attach_compilation_unit (bfd *abfd,
5632 const char *name,
5633 const char *language_name,
5634 const char *product_id,
5635 const char *version_id)
5636 {
5637 struct som_compilation_unit *n;
5638
5639 n = (struct som_compilation_unit *) bfd_zalloc
5640 (abfd, (bfd_size_type) sizeof (*n));
5641 if (n == NULL)
5642 return FALSE;
5643
5644 #define STRDUP(f) \
5645 if (f != NULL) \
5646 { \
5647 n->f.name = bfd_alloc (abfd, (bfd_size_type) strlen (f) + 1); \
5648 if (n->f.name == NULL) \
5649 return FALSE; \
5650 strcpy (n->f.name, f); \
5651 }
5652
5653 STRDUP (name);
5654 STRDUP (language_name);
5655 STRDUP (product_id);
5656 STRDUP (version_id);
5657
5658 #undef STRDUP
5659
5660 obj_som_compilation_unit (abfd) = n;
5661
5662 return TRUE;
5663 }
5664
5665 static bfd_boolean
som_get_section_contents(bfd * abfd,sec_ptr section,void * location,file_ptr offset,bfd_size_type count)5666 som_get_section_contents (bfd *abfd,
5667 sec_ptr section,
5668 void *location,
5669 file_ptr offset,
5670 bfd_size_type count)
5671 {
5672 if (count == 0 || ((section->flags & SEC_HAS_CONTENTS) == 0))
5673 return TRUE;
5674 if ((bfd_size_type) (offset+count) > section->size
5675 || bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0
5676 || bfd_bread (location, count, abfd) != count)
5677 return FALSE; /* On error. */
5678 return TRUE;
5679 }
5680
5681 static bfd_boolean
som_set_section_contents(bfd * abfd,sec_ptr section,const void * location,file_ptr offset,bfd_size_type count)5682 som_set_section_contents (bfd *abfd,
5683 sec_ptr section,
5684 const void *location,
5685 file_ptr offset,
5686 bfd_size_type count)
5687 {
5688 if (! abfd->output_has_begun)
5689 {
5690 /* Set up fixed parts of the file, space, and subspace headers.
5691 Notify the world that output has begun. */
5692 som_prep_headers (abfd);
5693 abfd->output_has_begun = TRUE;
5694 /* Start writing the object file. This include all the string
5695 tables, fixup streams, and other portions of the object file. */
5696 som_begin_writing (abfd);
5697 }
5698
5699 /* Only write subspaces which have "real" contents (eg. the contents
5700 are not generated at run time by the OS). */
5701 if (!som_is_subspace (section)
5702 || ((section->flags & SEC_HAS_CONTENTS) == 0))
5703 return TRUE;
5704
5705 /* Seek to the proper offset within the object file and write the
5706 data. */
5707 offset += som_section_data (section)->subspace_dict->file_loc_init_value;
5708 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
5709 return FALSE;
5710
5711 if (bfd_bwrite (location, count, abfd) != count)
5712 return FALSE;
5713 return TRUE;
5714 }
5715
5716 static bfd_boolean
som_set_arch_mach(bfd * abfd,enum bfd_architecture arch,unsigned long machine)5717 som_set_arch_mach (bfd *abfd,
5718 enum bfd_architecture arch,
5719 unsigned long machine)
5720 {
5721 /* Allow any architecture to be supported by the SOM backend. */
5722 return bfd_default_set_arch_mach (abfd, arch, machine);
5723 }
5724
5725 static bfd_boolean
som_find_nearest_line(bfd * abfd,asymbol ** symbols,asection * section,bfd_vma offset,const char ** filename_ptr,const char ** functionname_ptr,unsigned int * line_ptr,unsigned int * discriminator_ptr)5726 som_find_nearest_line (bfd *abfd,
5727 asymbol **symbols,
5728 asection *section,
5729 bfd_vma offset,
5730 const char **filename_ptr,
5731 const char **functionname_ptr,
5732 unsigned int *line_ptr,
5733 unsigned int *discriminator_ptr)
5734 {
5735 bfd_boolean found;
5736 asymbol *func;
5737 bfd_vma low_func;
5738 asymbol **p;
5739
5740 if (discriminator_ptr)
5741 *discriminator_ptr = 0;
5742
5743 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
5744 & found, filename_ptr,
5745 functionname_ptr, line_ptr,
5746 & somdata (abfd).line_info))
5747 return FALSE;
5748
5749 if (found)
5750 return TRUE;
5751
5752 if (symbols == NULL)
5753 return FALSE;
5754
5755 /* Fallback: find function name from symbols table. */
5756 func = NULL;
5757 low_func = 0;
5758
5759 for (p = symbols; *p != NULL; p++)
5760 {
5761 som_symbol_type *q = (som_symbol_type *) *p;
5762
5763 if (q->som_type == SYMBOL_TYPE_ENTRY
5764 && q->symbol.section == section
5765 && q->symbol.value >= low_func
5766 && q->symbol.value <= offset)
5767 {
5768 func = (asymbol *) q;
5769 low_func = q->symbol.value;
5770 }
5771 }
5772
5773 if (func == NULL)
5774 return FALSE;
5775
5776 *filename_ptr = NULL;
5777 *functionname_ptr = bfd_asymbol_name (func);
5778 *line_ptr = 0;
5779
5780 return TRUE;
5781 }
5782
5783 static int
som_sizeof_headers(bfd * abfd ATTRIBUTE_UNUSED,struct bfd_link_info * info ATTRIBUTE_UNUSED)5784 som_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
5785 struct bfd_link_info *info ATTRIBUTE_UNUSED)
5786 {
5787 _bfd_error_handler (_("som_sizeof_headers unimplemented"));
5788 abort ();
5789 return 0;
5790 }
5791
5792 /* Return the single-character symbol type corresponding to
5793 SOM section S, or '?' for an unknown SOM section. */
5794
5795 static char
som_section_type(const char * s)5796 som_section_type (const char *s)
5797 {
5798 const struct section_to_type *t;
5799
5800 for (t = &stt[0]; t->section; t++)
5801 if (!strcmp (s, t->section))
5802 return t->type;
5803 return '?';
5804 }
5805
5806 static int
som_decode_symclass(asymbol * symbol)5807 som_decode_symclass (asymbol *symbol)
5808 {
5809 char c;
5810
5811 if (bfd_is_com_section (symbol->section))
5812 return 'C';
5813 if (bfd_is_und_section (symbol->section))
5814 {
5815 if (symbol->flags & BSF_WEAK)
5816 {
5817 /* If weak, determine if it's specifically an object
5818 or non-object weak. */
5819 if (symbol->flags & BSF_OBJECT)
5820 return 'v';
5821 else
5822 return 'w';
5823 }
5824 else
5825 return 'U';
5826 }
5827 if (bfd_is_ind_section (symbol->section))
5828 return 'I';
5829 if (symbol->flags & BSF_WEAK)
5830 {
5831 /* If weak, determine if it's specifically an object
5832 or non-object weak. */
5833 if (symbol->flags & BSF_OBJECT)
5834 return 'V';
5835 else
5836 return 'W';
5837 }
5838 if (!(symbol->flags & (BSF_GLOBAL | BSF_LOCAL)))
5839 return '?';
5840
5841 if (bfd_is_abs_section (symbol->section)
5842 || (som_symbol_data (symbol) != NULL
5843 && som_symbol_data (symbol)->som_type == SYMBOL_TYPE_ABSOLUTE))
5844 c = 'a';
5845 else if (symbol->section)
5846 c = som_section_type (symbol->section->name);
5847 else
5848 return '?';
5849 if (symbol->flags & BSF_GLOBAL)
5850 c = TOUPPER (c);
5851 return c;
5852 }
5853
5854 /* Return information about SOM symbol SYMBOL in RET. */
5855
5856 static void
som_get_symbol_info(bfd * ignore_abfd ATTRIBUTE_UNUSED,asymbol * symbol,symbol_info * ret)5857 som_get_symbol_info (bfd *ignore_abfd ATTRIBUTE_UNUSED,
5858 asymbol *symbol,
5859 symbol_info *ret)
5860 {
5861 ret->type = som_decode_symclass (symbol);
5862 if (ret->type != 'U')
5863 ret->value = symbol->value + symbol->section->vma;
5864 else
5865 ret->value = 0;
5866 ret->name = symbol->name;
5867 }
5868
5869 /* Count the number of symbols in the archive symbol table. Necessary
5870 so that we can allocate space for all the carsyms at once. */
5871
5872 static bfd_boolean
som_bfd_count_ar_symbols(bfd * abfd,struct som_lst_header * lst_header,symindex * count)5873 som_bfd_count_ar_symbols (bfd *abfd,
5874 struct som_lst_header *lst_header,
5875 symindex *count)
5876 {
5877 unsigned int i;
5878 unsigned char *hash_table;
5879 bfd_size_type amt;
5880 file_ptr lst_filepos;
5881
5882 lst_filepos = bfd_tell (abfd) - sizeof (struct som_external_lst_header);
5883
5884 amt = lst_header->hash_size * 4;
5885 hash_table = bfd_malloc (amt);
5886 if (hash_table == NULL && amt != 0)
5887 goto error_return;
5888
5889 /* Don't forget to initialize the counter! */
5890 *count = 0;
5891
5892 /* Read in the hash table. The has table is an array of 32bit file offsets
5893 which point to the hash chains. */
5894 if (bfd_bread ((void *) hash_table, amt, abfd) != amt)
5895 goto error_return;
5896
5897 /* Walk each chain counting the number of symbols found on that particular
5898 chain. */
5899 for (i = 0; i < lst_header->hash_size; i++)
5900 {
5901 struct som_external_lst_symbol_record ext_lst_symbol;
5902 unsigned int hash_val = bfd_getb32 (hash_table + 4 * i);
5903
5904 /* An empty chain has zero as it's file offset. */
5905 if (hash_val == 0)
5906 continue;
5907
5908 /* Seek to the first symbol in this hash chain. */
5909 if (bfd_seek (abfd, lst_filepos + hash_val, SEEK_SET) != 0)
5910 goto error_return;
5911
5912 /* Read in this symbol and update the counter. */
5913 amt = sizeof (ext_lst_symbol);
5914 if (bfd_bread ((void *) &ext_lst_symbol, amt, abfd) != amt)
5915 goto error_return;
5916
5917 (*count)++;
5918
5919 /* Now iterate through the rest of the symbols on this chain. */
5920 while (1)
5921 {
5922 unsigned int next_entry = bfd_getb32 (ext_lst_symbol.next_entry);
5923
5924 if (next_entry == 0)
5925 break;
5926
5927 /* Seek to the next symbol. */
5928 if (bfd_seek (abfd, lst_filepos + next_entry, SEEK_SET) != 0)
5929 goto error_return;
5930
5931 /* Read the symbol in and update the counter. */
5932 amt = sizeof (ext_lst_symbol);
5933 if (bfd_bread ((void *) &ext_lst_symbol, amt, abfd) != amt)
5934 goto error_return;
5935
5936 (*count)++;
5937 }
5938 }
5939 if (hash_table != NULL)
5940 free (hash_table);
5941 return TRUE;
5942
5943 error_return:
5944 if (hash_table != NULL)
5945 free (hash_table);
5946 return FALSE;
5947 }
5948
5949 /* Fill in the canonical archive symbols (SYMS) from the archive described
5950 by ABFD and LST_HEADER. */
5951
5952 static bfd_boolean
som_bfd_fill_in_ar_symbols(bfd * abfd,struct som_lst_header * lst_header,carsym ** syms)5953 som_bfd_fill_in_ar_symbols (bfd *abfd,
5954 struct som_lst_header *lst_header,
5955 carsym **syms)
5956 {
5957 unsigned int i;
5958 carsym *set = syms[0];
5959 unsigned char *hash_table;
5960 struct som_external_som_entry *som_dict = NULL;
5961 bfd_size_type amt;
5962 file_ptr lst_filepos;
5963 unsigned int string_loc;
5964
5965 lst_filepos = bfd_tell (abfd) - sizeof (struct som_external_lst_header);
5966 amt = lst_header->hash_size * 4;
5967 hash_table = bfd_malloc (amt);
5968 if (hash_table == NULL && amt != 0)
5969 goto error_return;
5970
5971 /* Read in the hash table. The has table is an array of 32bit file offsets
5972 which point to the hash chains. */
5973 if (bfd_bread ((void *) hash_table, amt, abfd) != amt)
5974 goto error_return;
5975
5976 /* Seek to and read in the SOM dictionary. We will need this to fill
5977 in the carsym's filepos field. */
5978 if (bfd_seek (abfd, lst_filepos + lst_header->dir_loc, SEEK_SET) != 0)
5979 goto error_return;
5980
5981 amt = lst_header->module_count * sizeof (struct som_external_som_entry);
5982 som_dict = bfd_malloc (amt);
5983 if (som_dict == NULL && amt != 0)
5984 goto error_return;
5985
5986 if (bfd_bread ((void *) som_dict, amt, abfd) != amt)
5987 goto error_return;
5988
5989 string_loc = lst_header->string_loc;
5990
5991 /* Walk each chain filling in the carsyms as we go along. */
5992 for (i = 0; i < lst_header->hash_size; i++)
5993 {
5994 struct som_external_lst_symbol_record lst_symbol;
5995 unsigned int hash_val;
5996 unsigned int len;
5997 unsigned char ext_len[4];
5998
5999 /* An empty chain has zero as it's file offset. */
6000 hash_val = bfd_getb32 (hash_table + 4 * i);
6001 if (hash_val == 0)
6002 continue;
6003
6004 /* Seek to and read the first symbol on the chain. */
6005 if (bfd_seek (abfd, lst_filepos + hash_val, SEEK_SET) != 0)
6006 goto error_return;
6007
6008 amt = sizeof (lst_symbol);
6009 if (bfd_bread ((void *) &lst_symbol, amt, abfd) != amt)
6010 goto error_return;
6011
6012 /* Get the name of the symbol, first get the length which is stored
6013 as a 32bit integer just before the symbol.
6014
6015 One might ask why we don't just read in the entire string table
6016 and index into it. Well, according to the SOM ABI the string
6017 index can point *anywhere* in the archive to save space, so just
6018 using the string table would not be safe. */
6019 if (bfd_seek (abfd, (lst_filepos + string_loc
6020 + bfd_getb32 (lst_symbol.name) - 4), SEEK_SET) != 0)
6021 goto error_return;
6022
6023 if (bfd_bread (&ext_len, (bfd_size_type) 4, abfd) != 4)
6024 goto error_return;
6025 len = bfd_getb32 (ext_len);
6026
6027 /* Allocate space for the name and null terminate it too. */
6028 set->name = bfd_zalloc (abfd, (bfd_size_type) len + 1);
6029 if (!set->name)
6030 goto error_return;
6031 if (bfd_bread (set->name, (bfd_size_type) len, abfd) != len)
6032 goto error_return;
6033
6034 set->name[len] = 0;
6035
6036 /* Fill in the file offset. Note that the "location" field points
6037 to the SOM itself, not the ar_hdr in front of it. */
6038 set->file_offset =
6039 bfd_getb32 (som_dict[bfd_getb32 (lst_symbol.som_index)].location)
6040 - sizeof (struct ar_hdr);
6041
6042 /* Go to the next symbol. */
6043 set++;
6044
6045 /* Iterate through the rest of the chain. */
6046 while (1)
6047 {
6048 unsigned int next_entry = bfd_getb32 (lst_symbol.next_entry);
6049
6050 if (next_entry == 0)
6051 break;
6052
6053 /* Seek to the next symbol and read it in. */
6054 if (bfd_seek (abfd, lst_filepos + next_entry, SEEK_SET) != 0)
6055 goto error_return;
6056
6057 amt = sizeof (lst_symbol);
6058 if (bfd_bread ((void *) &lst_symbol, amt, abfd) != amt)
6059 goto error_return;
6060
6061 /* Seek to the name length & string and read them in. */
6062 if (bfd_seek (abfd, lst_filepos + string_loc
6063 + bfd_getb32 (lst_symbol.name) - 4, SEEK_SET) != 0)
6064 goto error_return;
6065
6066 if (bfd_bread (&ext_len, (bfd_size_type) 4, abfd) != 4)
6067 goto error_return;
6068 len = bfd_getb32 (ext_len);
6069
6070 /* Allocate space for the name and null terminate it too. */
6071 set->name = bfd_zalloc (abfd, (bfd_size_type) len + 1);
6072 if (!set->name)
6073 goto error_return;
6074
6075 if (bfd_bread (set->name, (bfd_size_type) len, abfd) != len)
6076 goto error_return;
6077 set->name[len] = 0;
6078
6079 /* Fill in the file offset. Note that the "location" field points
6080 to the SOM itself, not the ar_hdr in front of it. */
6081 set->file_offset =
6082 bfd_getb32 (som_dict[bfd_getb32 (lst_symbol.som_index)].location)
6083 - sizeof (struct ar_hdr);
6084
6085 /* Go on to the next symbol. */
6086 set++;
6087 }
6088 }
6089 /* If we haven't died by now, then we successfully read the entire
6090 archive symbol table. */
6091 if (hash_table != NULL)
6092 free (hash_table);
6093 if (som_dict != NULL)
6094 free (som_dict);
6095 return TRUE;
6096
6097 error_return:
6098 if (hash_table != NULL)
6099 free (hash_table);
6100 if (som_dict != NULL)
6101 free (som_dict);
6102 return FALSE;
6103 }
6104
6105 /* Read in the LST from the archive. */
6106
6107 static bfd_boolean
som_slurp_armap(bfd * abfd)6108 som_slurp_armap (bfd *abfd)
6109 {
6110 struct som_external_lst_header ext_lst_header;
6111 struct som_lst_header lst_header;
6112 struct ar_hdr ar_header;
6113 unsigned int parsed_size;
6114 struct artdata *ardata = bfd_ardata (abfd);
6115 char nextname[17];
6116 bfd_size_type amt = 16;
6117 int i = bfd_bread ((void *) nextname, amt, abfd);
6118
6119 /* Special cases. */
6120 if (i == 0)
6121 return TRUE;
6122 if (i != 16)
6123 return FALSE;
6124
6125 if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0)
6126 return FALSE;
6127
6128 /* For archives without .o files there is no symbol table. */
6129 if (! CONST_STRNEQ (nextname, "/ "))
6130 {
6131 bfd_has_map (abfd) = FALSE;
6132 return TRUE;
6133 }
6134
6135 /* Read in and sanity check the archive header. */
6136 amt = sizeof (struct ar_hdr);
6137 if (bfd_bread ((void *) &ar_header, amt, abfd) != amt)
6138 return FALSE;
6139
6140 if (strncmp (ar_header.ar_fmag, ARFMAG, 2))
6141 {
6142 bfd_set_error (bfd_error_malformed_archive);
6143 return FALSE;
6144 }
6145
6146 /* How big is the archive symbol table entry? */
6147 errno = 0;
6148 parsed_size = strtol (ar_header.ar_size, NULL, 10);
6149 if (errno != 0)
6150 {
6151 bfd_set_error (bfd_error_malformed_archive);
6152 return FALSE;
6153 }
6154
6155 /* Save off the file offset of the first real user data. */
6156 ardata->first_file_filepos = bfd_tell (abfd) + parsed_size;
6157
6158 /* Read in the library symbol table. We'll make heavy use of this
6159 in just a minute. */
6160 amt = sizeof (struct som_external_lst_header);
6161 if (bfd_bread ((void *) &ext_lst_header, amt, abfd) != amt)
6162 return FALSE;
6163
6164 som_swap_lst_header_in (&ext_lst_header, &lst_header);
6165
6166 /* Sanity check. */
6167 if (lst_header.a_magic != LIBMAGIC)
6168 {
6169 bfd_set_error (bfd_error_malformed_archive);
6170 return FALSE;
6171 }
6172
6173 /* Count the number of symbols in the library symbol table. */
6174 if (! som_bfd_count_ar_symbols (abfd, &lst_header, &ardata->symdef_count))
6175 return FALSE;
6176
6177 /* Get back to the start of the library symbol table. */
6178 if (bfd_seek (abfd, (ardata->first_file_filepos - parsed_size
6179 + sizeof (struct som_external_lst_header)),
6180 SEEK_SET) != 0)
6181 return FALSE;
6182
6183 /* Initialize the cache and allocate space for the library symbols. */
6184 ardata->cache = 0;
6185 amt = ardata->symdef_count;
6186 amt *= sizeof (carsym);
6187 ardata->symdefs = bfd_alloc (abfd, amt);
6188 if (!ardata->symdefs)
6189 return FALSE;
6190
6191 /* Now fill in the canonical archive symbols. */
6192 if (! som_bfd_fill_in_ar_symbols (abfd, &lst_header, &ardata->symdefs))
6193 return FALSE;
6194
6195 /* Seek back to the "first" file in the archive. Note the "first"
6196 file may be the extended name table. */
6197 if (bfd_seek (abfd, ardata->first_file_filepos, SEEK_SET) != 0)
6198 return FALSE;
6199
6200 /* Notify the generic archive code that we have a symbol map. */
6201 bfd_has_map (abfd) = TRUE;
6202 return TRUE;
6203 }
6204
6205 /* Begin preparing to write a SOM library symbol table.
6206
6207 As part of the prep work we need to determine the number of symbols
6208 and the size of the associated string section. */
6209
6210 static bfd_boolean
som_bfd_prep_for_ar_write(bfd * abfd,unsigned int * num_syms,unsigned int * stringsize)6211 som_bfd_prep_for_ar_write (bfd *abfd,
6212 unsigned int *num_syms,
6213 unsigned int *stringsize)
6214 {
6215 bfd *curr_bfd = abfd->archive_head;
6216
6217 /* Some initialization. */
6218 *num_syms = 0;
6219 *stringsize = 0;
6220
6221 /* Iterate over each BFD within this archive. */
6222 while (curr_bfd != NULL)
6223 {
6224 unsigned int curr_count, i;
6225 som_symbol_type *sym;
6226
6227 /* Don't bother for non-SOM objects. */
6228 if (curr_bfd->format != bfd_object
6229 || curr_bfd->xvec->flavour != bfd_target_som_flavour)
6230 {
6231 curr_bfd = curr_bfd->archive_next;
6232 continue;
6233 }
6234
6235 /* Make sure the symbol table has been read, then snag a pointer
6236 to it. It's a little slimey to grab the symbols via obj_som_symtab,
6237 but doing so avoids allocating lots of extra memory. */
6238 if (! som_slurp_symbol_table (curr_bfd))
6239 return FALSE;
6240
6241 sym = obj_som_symtab (curr_bfd);
6242 curr_count = bfd_get_symcount (curr_bfd);
6243
6244 /* Examine each symbol to determine if it belongs in the
6245 library symbol table. */
6246 for (i = 0; i < curr_count; i++, sym++)
6247 {
6248 struct som_misc_symbol_info info;
6249
6250 /* Derive SOM information from the BFD symbol. */
6251 som_bfd_derive_misc_symbol_info (curr_bfd, &sym->symbol, &info);
6252
6253 /* Should we include this symbol? */
6254 if (info.symbol_type == ST_NULL
6255 || info.symbol_type == ST_SYM_EXT
6256 || info.symbol_type == ST_ARG_EXT)
6257 continue;
6258
6259 /* Only global symbols and unsatisfied commons. */
6260 if (info.symbol_scope != SS_UNIVERSAL
6261 && info.symbol_type != ST_STORAGE)
6262 continue;
6263
6264 /* Do no include undefined symbols. */
6265 if (bfd_is_und_section (sym->symbol.section))
6266 continue;
6267
6268 /* Bump the various counters, being careful to honor
6269 alignment considerations in the string table. */
6270 (*num_syms)++;
6271 *stringsize += strlen (sym->symbol.name) + 5;
6272 while (*stringsize % 4)
6273 (*stringsize)++;
6274 }
6275
6276 curr_bfd = curr_bfd->archive_next;
6277 }
6278 return TRUE;
6279 }
6280
6281 /* Hash a symbol name based on the hashing algorithm presented in the
6282 SOM ABI. */
6283
6284 static unsigned int
som_bfd_ar_symbol_hash(asymbol * symbol)6285 som_bfd_ar_symbol_hash (asymbol *symbol)
6286 {
6287 unsigned int len = strlen (symbol->name);
6288
6289 /* Names with length 1 are special. */
6290 if (len == 1)
6291 return 0x1000100 | (symbol->name[0] << 16) | symbol->name[0];
6292
6293 return ((len & 0x7f) << 24) | (symbol->name[1] << 16)
6294 | (symbol->name[len - 2] << 8) | symbol->name[len - 1];
6295 }
6296
6297 /* Do the bulk of the work required to write the SOM library
6298 symbol table. */
6299
6300 static bfd_boolean
som_bfd_ar_write_symbol_stuff(bfd * abfd,unsigned int nsyms,unsigned int string_size,struct som_external_lst_header lst,unsigned elength)6301 som_bfd_ar_write_symbol_stuff (bfd *abfd,
6302 unsigned int nsyms,
6303 unsigned int string_size,
6304 struct som_external_lst_header lst,
6305 unsigned elength)
6306 {
6307 char *strings = NULL, *p;
6308 struct som_external_lst_symbol_record *lst_syms = NULL, *curr_lst_sym;
6309 bfd *curr_bfd;
6310 unsigned char *hash_table = NULL;
6311 struct som_external_som_entry *som_dict = NULL;
6312 struct som_external_lst_symbol_record **last_hash_entry = NULL;
6313 unsigned int curr_som_offset, som_index = 0;
6314 bfd_size_type amt;
6315 unsigned int module_count;
6316 unsigned int hash_size;
6317
6318 hash_size = bfd_getb32 (lst.hash_size);
6319 amt = hash_size * 4;
6320 hash_table = bfd_zmalloc (amt);
6321 if (hash_table == NULL && hash_size != 0)
6322 goto error_return;
6323
6324 module_count = bfd_getb32 (lst.module_count);
6325 amt = module_count * sizeof (struct som_external_som_entry);
6326 som_dict = bfd_zmalloc (amt);
6327 if (som_dict == NULL && module_count != 0)
6328 goto error_return;
6329
6330 amt = hash_size * sizeof (struct som_external_lst_symbol_record *);
6331 last_hash_entry = bfd_zmalloc (amt);
6332 if (last_hash_entry == NULL && hash_size != 0)
6333 goto error_return;
6334
6335 /* Symbols have som_index fields, so we have to keep track of the
6336 index of each SOM in the archive.
6337
6338 The SOM dictionary has (among other things) the absolute file
6339 position for the SOM which a particular dictionary entry
6340 describes. We have to compute that information as we iterate
6341 through the SOMs/symbols. */
6342 som_index = 0;
6343
6344 /* We add in the size of the archive header twice as the location
6345 in the SOM dictionary is the actual offset of the SOM, not the
6346 archive header before the SOM. */
6347 curr_som_offset = 8 + 2 * sizeof (struct ar_hdr) + bfd_getb32 (lst.file_end);
6348
6349 /* Make room for the archive header and the contents of the
6350 extended string table. Note that elength includes the size
6351 of the archive header for the extended name table! */
6352 if (elength)
6353 curr_som_offset += elength;
6354
6355 /* Make sure we're properly aligned. */
6356 curr_som_offset = (curr_som_offset + 0x1) & ~0x1;
6357
6358 /* FIXME should be done with buffers just like everything else... */
6359 amt = nsyms;
6360 amt *= sizeof (struct som_external_lst_symbol_record);
6361 lst_syms = bfd_malloc (amt);
6362 if (lst_syms == NULL && nsyms != 0)
6363 goto error_return;
6364 strings = bfd_malloc ((bfd_size_type) string_size);
6365 if (strings == NULL && string_size != 0)
6366 goto error_return;
6367
6368 p = strings;
6369 curr_lst_sym = lst_syms;
6370
6371 curr_bfd = abfd->archive_head;
6372 while (curr_bfd != NULL)
6373 {
6374 unsigned int curr_count, i;
6375 som_symbol_type *sym;
6376
6377 /* Don't bother for non-SOM objects. */
6378 if (curr_bfd->format != bfd_object
6379 || curr_bfd->xvec->flavour != bfd_target_som_flavour)
6380 {
6381 curr_bfd = curr_bfd->archive_next;
6382 continue;
6383 }
6384
6385 /* Make sure the symbol table has been read, then snag a pointer
6386 to it. It's a little slimey to grab the symbols via obj_som_symtab,
6387 but doing so avoids allocating lots of extra memory. */
6388 if (! som_slurp_symbol_table (curr_bfd))
6389 goto error_return;
6390
6391 sym = obj_som_symtab (curr_bfd);
6392 curr_count = bfd_get_symcount (curr_bfd);
6393
6394 for (i = 0; i < curr_count; i++, sym++)
6395 {
6396 struct som_misc_symbol_info info;
6397 struct som_external_lst_symbol_record *last;
6398 unsigned int symbol_pos;
6399 unsigned int slen;
6400 unsigned int symbol_key;
6401 unsigned int flags;
6402
6403 /* Derive SOM information from the BFD symbol. */
6404 som_bfd_derive_misc_symbol_info (curr_bfd, &sym->symbol, &info);
6405
6406 /* Should we include this symbol? */
6407 if (info.symbol_type == ST_NULL
6408 || info.symbol_type == ST_SYM_EXT
6409 || info.symbol_type == ST_ARG_EXT)
6410 continue;
6411
6412 /* Only global symbols and unsatisfied commons. */
6413 if (info.symbol_scope != SS_UNIVERSAL
6414 && info.symbol_type != ST_STORAGE)
6415 continue;
6416
6417 /* Do no include undefined symbols. */
6418 if (bfd_is_und_section (sym->symbol.section))
6419 continue;
6420
6421 /* If this is the first symbol from this SOM, then update
6422 the SOM dictionary too. */
6423 if (bfd_getb32 (som_dict[som_index].location) == 0)
6424 {
6425 bfd_putb32 (curr_som_offset, som_dict[som_index].location);
6426 bfd_putb32 (arelt_size (curr_bfd), som_dict[som_index].length);
6427 }
6428
6429 symbol_key = som_bfd_ar_symbol_hash (&sym->symbol);
6430
6431 /* Fill in the lst symbol record. */
6432 flags = 0;
6433 if (info.secondary_def)
6434 flags |= LST_SYMBOL_SECONDARY_DEF;
6435 flags |= info.symbol_type << LST_SYMBOL_SYMBOL_TYPE_SH;
6436 flags |= info.symbol_scope << LST_SYMBOL_SYMBOL_SCOPE_SH;
6437 if (bfd_is_com_section (sym->symbol.section))
6438 flags |= LST_SYMBOL_IS_COMMON;
6439 if (info.dup_common)
6440 flags |= LST_SYMBOL_DUP_COMMON;
6441 flags |= 3 << LST_SYMBOL_XLEAST_SH;
6442 flags |= info.arg_reloc << LST_SYMBOL_ARG_RELOC_SH;
6443 bfd_putb32 (flags, curr_lst_sym->flags);
6444 bfd_putb32 (p - strings + 4, curr_lst_sym->name);
6445 bfd_putb32 (0, curr_lst_sym->qualifier_name);
6446 bfd_putb32 (info.symbol_info, curr_lst_sym->symbol_info);
6447 bfd_putb32 (info.symbol_value | info.priv_level,
6448 curr_lst_sym->symbol_value);
6449 bfd_putb32 (0, curr_lst_sym->symbol_descriptor);
6450 curr_lst_sym->reserved = 0;
6451 bfd_putb32 (som_index, curr_lst_sym->som_index);
6452 bfd_putb32 (symbol_key, curr_lst_sym->symbol_key);
6453 bfd_putb32 (0, curr_lst_sym->next_entry);
6454
6455 /* Insert into the hash table. */
6456 symbol_pos =
6457 (curr_lst_sym - lst_syms)
6458 * sizeof (struct som_external_lst_symbol_record)
6459 + hash_size * 4
6460 + module_count * sizeof (struct som_external_som_entry)
6461 + sizeof (struct som_external_lst_header);
6462 last = last_hash_entry[symbol_key % hash_size];
6463 if (last != NULL)
6464 {
6465 /* There is already something at the head of this hash chain,
6466 so tack this symbol onto the end of the chain. */
6467 bfd_putb32 (symbol_pos, last->next_entry);
6468 }
6469 else
6470 /* First entry in this hash chain. */
6471 bfd_putb32 (symbol_pos, hash_table + 4 * (symbol_key % hash_size));
6472
6473 /* Keep track of the last symbol we added to this chain so we can
6474 easily update its next_entry pointer. */
6475 last_hash_entry[symbol_key % hash_size] = curr_lst_sym;
6476
6477 /* Update the string table. */
6478 slen = strlen (sym->symbol.name);
6479 bfd_put_32 (abfd, slen, p);
6480 p += 4;
6481 slen++; /* Nul terminator. */
6482 memcpy (p, sym->symbol.name, slen);
6483 p += slen;
6484 while (slen % 4)
6485 {
6486 bfd_put_8 (abfd, 0, p);
6487 p++;
6488 slen++;
6489 }
6490 BFD_ASSERT (p <= strings + string_size);
6491
6492 /* Head to the next symbol. */
6493 curr_lst_sym++;
6494 }
6495
6496 /* Keep track of where each SOM will finally reside; then look
6497 at the next BFD. */
6498 curr_som_offset += arelt_size (curr_bfd) + sizeof (struct ar_hdr);
6499
6500 /* A particular object in the archive may have an odd length; the
6501 linker requires objects begin on an even boundary. So round
6502 up the current offset as necessary. */
6503 curr_som_offset = (curr_som_offset + 0x1) &~ (unsigned) 1;
6504 curr_bfd = curr_bfd->archive_next;
6505 som_index++;
6506 }
6507
6508 /* Now scribble out the hash table. */
6509 amt = hash_size * 4;
6510 if (bfd_bwrite ((void *) hash_table, amt, abfd) != amt)
6511 goto error_return;
6512
6513 /* Then the SOM dictionary. */
6514 amt = module_count * sizeof (struct som_external_som_entry);
6515 if (bfd_bwrite ((void *) som_dict, amt, abfd) != amt)
6516 goto error_return;
6517
6518 /* The library symbols. */
6519 amt = nsyms * sizeof (struct som_external_lst_symbol_record);
6520 if (bfd_bwrite ((void *) lst_syms, amt, abfd) != amt)
6521 goto error_return;
6522
6523 /* And finally the strings. */
6524 amt = string_size;
6525 if (bfd_bwrite ((void *) strings, amt, abfd) != amt)
6526 goto error_return;
6527
6528 if (hash_table != NULL)
6529 free (hash_table);
6530 if (som_dict != NULL)
6531 free (som_dict);
6532 if (last_hash_entry != NULL)
6533 free (last_hash_entry);
6534 if (lst_syms != NULL)
6535 free (lst_syms);
6536 if (strings != NULL)
6537 free (strings);
6538 return TRUE;
6539
6540 error_return:
6541 if (hash_table != NULL)
6542 free (hash_table);
6543 if (som_dict != NULL)
6544 free (som_dict);
6545 if (last_hash_entry != NULL)
6546 free (last_hash_entry);
6547 if (lst_syms != NULL)
6548 free (lst_syms);
6549 if (strings != NULL)
6550 free (strings);
6551
6552 return FALSE;
6553 }
6554
6555 /* Write out the LST for the archive.
6556
6557 You'll never believe this is really how armaps are handled in SOM... */
6558
6559 static bfd_boolean
som_write_armap(bfd * abfd,unsigned int elength,struct orl * map ATTRIBUTE_UNUSED,unsigned int orl_count ATTRIBUTE_UNUSED,int stridx ATTRIBUTE_UNUSED)6560 som_write_armap (bfd *abfd,
6561 unsigned int elength,
6562 struct orl *map ATTRIBUTE_UNUSED,
6563 unsigned int orl_count ATTRIBUTE_UNUSED,
6564 int stridx ATTRIBUTE_UNUSED)
6565 {
6566 bfd *curr_bfd;
6567 struct stat statbuf;
6568 unsigned int i, lst_size, nsyms, stringsize;
6569 struct ar_hdr hdr;
6570 struct som_external_lst_header lst;
6571 unsigned char *p;
6572 bfd_size_type amt;
6573 unsigned int csum;
6574 unsigned int module_count;
6575
6576 /* We'll use this for the archive's date and mode later. */
6577 if (stat (abfd->filename, &statbuf) != 0)
6578 {
6579 bfd_set_error (bfd_error_system_call);
6580 return FALSE;
6581 }
6582 /* Fudge factor. */
6583 bfd_ardata (abfd)->armap_timestamp = statbuf.st_mtime + 60;
6584
6585 /* Account for the lst header first. */
6586 lst_size = sizeof (struct som_external_lst_header);
6587
6588 /* Start building the LST header. */
6589 /* FIXME: Do we need to examine each element to determine the
6590 largest id number? */
6591 bfd_putb16 (CPU_PA_RISC1_0, &lst.system_id);
6592 bfd_putb16 (LIBMAGIC, &lst.a_magic);
6593 bfd_putb32 (VERSION_ID, &lst.version_id);
6594 bfd_putb32 (0, &lst.file_time.secs);
6595 bfd_putb32 (0, &lst.file_time.nanosecs);
6596
6597 bfd_putb32 (lst_size, &lst.hash_loc);
6598 bfd_putb32 (SOM_LST_HASH_SIZE, &lst.hash_size);
6599
6600 /* Hash table is a SOM_LST_HASH_SIZE 32bit offsets. */
6601 lst_size += 4 * SOM_LST_HASH_SIZE;
6602
6603 /* We need to count the number of SOMs in this archive. */
6604 curr_bfd = abfd->archive_head;
6605 module_count = 0;
6606 while (curr_bfd != NULL)
6607 {
6608 /* Only true SOM objects count. */
6609 if (curr_bfd->format == bfd_object
6610 && curr_bfd->xvec->flavour == bfd_target_som_flavour)
6611 module_count++;
6612 curr_bfd = curr_bfd->archive_next;
6613 }
6614 bfd_putb32 (module_count, &lst.module_count);
6615 bfd_putb32 (module_count, &lst.module_limit);
6616 bfd_putb32 (lst_size, &lst.dir_loc);
6617 lst_size += sizeof (struct som_external_som_entry) * module_count;
6618
6619 /* We don't support import/export tables, auxiliary headers,
6620 or free lists yet. Make the linker work a little harder
6621 to make our life easier. */
6622
6623 bfd_putb32 (0, &lst.export_loc);
6624 bfd_putb32 (0, &lst.export_count);
6625 bfd_putb32 (0, &lst.import_loc);
6626 bfd_putb32 (0, &lst.aux_loc);
6627 bfd_putb32 (0, &lst.aux_size);
6628
6629 /* Count how many symbols we will have on the hash chains and the
6630 size of the associated string table. */
6631 if (! som_bfd_prep_for_ar_write (abfd, &nsyms, &stringsize))
6632 return FALSE;
6633
6634 lst_size += sizeof (struct som_external_lst_symbol_record) * nsyms;
6635
6636 /* For the string table. One day we might actually use this info
6637 to avoid small seeks/reads when reading archives. */
6638 bfd_putb32 (lst_size, &lst.string_loc);
6639 bfd_putb32 (stringsize, &lst.string_size);
6640 lst_size += stringsize;
6641
6642 /* SOM ABI says this must be zero. */
6643 bfd_putb32 (0, &lst.free_list);
6644 bfd_putb32 (lst_size, &lst.file_end);
6645
6646 /* Compute the checksum. Must happen after the entire lst header
6647 has filled in. */
6648 p = (unsigned char *) &lst;
6649 csum = 0;
6650 for (i = 0; i < sizeof (struct som_external_lst_header) - sizeof (int);
6651 i += 4)
6652 csum ^= bfd_getb32 (&p[i]);
6653 bfd_putb32 (csum, &lst.checksum);
6654
6655 sprintf (hdr.ar_name, "/ ");
6656 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%-12ld",
6657 bfd_ardata (abfd)->armap_timestamp);
6658 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld",
6659 statbuf.st_uid);
6660 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld",
6661 statbuf.st_gid);
6662 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-8o",
6663 (unsigned int)statbuf.st_mode);
6664 _bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10d",
6665 (int) lst_size);
6666 hdr.ar_fmag[0] = '`';
6667 hdr.ar_fmag[1] = '\012';
6668
6669 /* Turn any nulls into spaces. */
6670 for (i = 0; i < sizeof (struct ar_hdr); i++)
6671 if (((char *) (&hdr))[i] == '\0')
6672 (((char *) (&hdr))[i]) = ' ';
6673
6674 /* Scribble out the ar header. */
6675 amt = sizeof (struct ar_hdr);
6676 if (bfd_bwrite ((void *) &hdr, amt, abfd) != amt)
6677 return FALSE;
6678
6679 /* Now scribble out the lst header. */
6680 amt = sizeof (struct som_external_lst_header);
6681 if (bfd_bwrite ((void *) &lst, amt, abfd) != amt)
6682 return FALSE;
6683
6684 /* Build and write the armap. */
6685 if (!som_bfd_ar_write_symbol_stuff (abfd, nsyms, stringsize, lst, elength))
6686 return FALSE;
6687
6688 /* Done. */
6689 return TRUE;
6690 }
6691
6692 /* Free all information we have cached for this BFD. We can always
6693 read it again later if we need it. */
6694
6695 static bfd_boolean
som_bfd_free_cached_info(bfd * abfd)6696 som_bfd_free_cached_info (bfd *abfd)
6697 {
6698 asection *o;
6699
6700 if (bfd_get_format (abfd) != bfd_object)
6701 return TRUE;
6702
6703 #define FREE(x) if (x != NULL) { free (x); x = NULL; }
6704 /* Free the native string and symbol tables. */
6705 FREE (obj_som_symtab (abfd));
6706 FREE (obj_som_stringtab (abfd));
6707 for (o = abfd->sections; o != NULL; o = o->next)
6708 {
6709 /* Free the native relocations. */
6710 o->reloc_count = (unsigned) -1;
6711 FREE (som_section_data (o)->reloc_stream);
6712 /* Do not free the generic relocations as they are objalloc'ed. */
6713 }
6714 #undef FREE
6715
6716 return TRUE;
6717 }
6718
6719 /* End of miscellaneous support functions. */
6720
6721 /* Linker support functions. */
6722
6723 static bfd_boolean
som_bfd_link_split_section(bfd * abfd ATTRIBUTE_UNUSED,asection * sec)6724 som_bfd_link_split_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
6725 {
6726 return som_is_subspace (sec) && sec->size > 240000;
6727 }
6728
6729 #define som_find_line _bfd_nosymbols_find_line
6730 #define som_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string
6731 #define som_close_and_cleanup som_bfd_free_cached_info
6732 #define som_read_ar_hdr _bfd_generic_read_ar_hdr
6733 #define som_write_ar_hdr _bfd_generic_write_ar_hdr
6734 #define som_openr_next_archived_file bfd_generic_openr_next_archived_file
6735 #define som_get_elt_at_index _bfd_generic_get_elt_at_index
6736 #define som_generic_stat_arch_elt bfd_generic_stat_arch_elt
6737 #define som_truncate_arname bfd_bsd_truncate_arname
6738 #define som_slurp_extended_name_table _bfd_slurp_extended_name_table
6739 #define som_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table
6740 #define som_update_armap_timestamp bfd_true
6741 #define som_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
6742 #define som_get_lineno _bfd_nosymbols_get_lineno
6743 #define som_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
6744 #define som_read_minisymbols _bfd_generic_read_minisymbols
6745 #define som_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
6746 #define som_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
6747 #define som_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
6748 #define som_bfd_relax_section bfd_generic_relax_section
6749 #define som_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
6750 #define som_bfd_link_add_symbols _bfd_generic_link_add_symbols
6751 #define som_bfd_link_just_syms _bfd_generic_link_just_syms
6752 #define som_bfd_copy_link_hash_symbol_type \
6753 _bfd_generic_copy_link_hash_symbol_type
6754 #define som_bfd_final_link _bfd_generic_final_link
6755 #define som_bfd_gc_sections bfd_generic_gc_sections
6756 #define som_bfd_lookup_section_flags bfd_generic_lookup_section_flags
6757 #define som_bfd_merge_sections bfd_generic_merge_sections
6758 #define som_bfd_is_group_section bfd_generic_is_group_section
6759 #define som_bfd_discard_group bfd_generic_discard_group
6760 #define som_section_already_linked _bfd_generic_section_already_linked
6761 #define som_bfd_define_common_symbol bfd_generic_define_common_symbol
6762 #define som_bfd_define_start_stop bfd_generic_define_start_stop
6763 #define som_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
6764 #define som_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
6765 #define som_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
6766 #define som_find_inliner_info _bfd_nosymbols_find_inliner_info
6767 #define som_bfd_link_check_relocs _bfd_generic_link_check_relocs
6768 #define som_set_reloc _bfd_generic_set_reloc
6769
6770 const bfd_target hppa_som_vec =
6771 {
6772 "som", /* Name. */
6773 bfd_target_som_flavour,
6774 BFD_ENDIAN_BIG, /* Target byte order. */
6775 BFD_ENDIAN_BIG, /* Target headers byte order. */
6776 (HAS_RELOC | EXEC_P | /* Object flags. */
6777 HAS_LINENO | HAS_DEBUG |
6778 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | DYNAMIC),
6779 (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS | SEC_LINK_ONCE
6780 | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */
6781
6782 /* Leading_symbol_char: is the first char of a user symbol
6783 predictable, and if so what is it. */
6784 0,
6785 '/', /* AR_pad_char. */
6786 14, /* AR_max_namelen. */
6787 0, /* match priority. */
6788 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
6789 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
6790 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */
6791 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
6792 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
6793 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */
6794 {_bfd_dummy_target,
6795 som_object_p, /* bfd_check_format. */
6796 bfd_generic_archive_p,
6797 _bfd_dummy_target
6798 },
6799 {
6800 bfd_false,
6801 som_mkobject,
6802 _bfd_generic_mkarchive,
6803 bfd_false
6804 },
6805 {
6806 bfd_false,
6807 som_write_object_contents,
6808 _bfd_write_archive_contents,
6809 bfd_false,
6810 },
6811 #undef som
6812
6813 BFD_JUMP_TABLE_GENERIC (som),
6814 BFD_JUMP_TABLE_COPY (som),
6815 BFD_JUMP_TABLE_CORE (_bfd_nocore),
6816 BFD_JUMP_TABLE_ARCHIVE (som),
6817 BFD_JUMP_TABLE_SYMBOLS (som),
6818 BFD_JUMP_TABLE_RELOCS (som),
6819 BFD_JUMP_TABLE_WRITE (som),
6820 BFD_JUMP_TABLE_LINK (som),
6821 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
6822
6823 NULL,
6824
6825 NULL
6826 };
6827
6828