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[deliverable/binutils-gdb.git] / bfd / som.c
1 /* bfd back-end for HP PA-RISC SOM objects.
2 Copyright (C) 1990-2021 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 "bfd.h"
26 #include "libiberty.h"
27 #include "libbfd.h"
28 #include "som.h"
29 #include "safe-ctype.h"
30 #include "som/reloc.h"
31 #include "aout/ar.h"
32
33 static bfd_reloc_status_type hppa_som_reloc
34 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
35 static bool som_mkobject (bfd *);
36 static bool som_is_space (asection *);
37 static bool som_is_subspace (asection *);
38 static int compare_subspaces (const void *, const void *);
39 static uint32_t som_compute_checksum (struct som_external_header *);
40 static bool som_build_and_write_symbol_table (bfd *);
41 static unsigned int som_slurp_symbol_table (bfd *);
42
43 /* Magic not defined in standard HP-UX header files until 8.0. */
44
45 #ifndef CPU_PA_RISC1_0
46 #define CPU_PA_RISC1_0 0x20B
47 #endif /* CPU_PA_RISC1_0 */
48
49 #ifndef CPU_PA_RISC1_1
50 #define CPU_PA_RISC1_1 0x210
51 #endif /* CPU_PA_RISC1_1 */
52
53 #ifndef CPU_PA_RISC2_0
54 #define CPU_PA_RISC2_0 0x214
55 #endif /* CPU_PA_RISC2_0 */
56
57 #ifndef _PA_RISC1_0_ID
58 #define _PA_RISC1_0_ID CPU_PA_RISC1_0
59 #endif /* _PA_RISC1_0_ID */
60
61 #ifndef _PA_RISC1_1_ID
62 #define _PA_RISC1_1_ID CPU_PA_RISC1_1
63 #endif /* _PA_RISC1_1_ID */
64
65 #ifndef _PA_RISC2_0_ID
66 #define _PA_RISC2_0_ID CPU_PA_RISC2_0
67 #endif /* _PA_RISC2_0_ID */
68
69 #ifndef _PA_RISC_MAXID
70 #define _PA_RISC_MAXID 0x2FF
71 #endif /* _PA_RISC_MAXID */
72
73 #ifndef _PA_RISC_ID
74 #define _PA_RISC_ID(__m_num) \
75 (((__m_num) == _PA_RISC1_0_ID) || \
76 ((__m_num) >= _PA_RISC1_1_ID && (__m_num) <= _PA_RISC_MAXID))
77 #endif /* _PA_RISC_ID */
78
79 /* HIUX in it's infinite stupidity changed the names for several "well
80 known" constants. Work around such braindamage. Try the HPUX version
81 first, then the HIUX version, and finally provide a default. */
82 #ifdef HPUX_AUX_ID
83 #define EXEC_AUX_ID HPUX_AUX_ID
84 #endif
85
86 #if !defined (EXEC_AUX_ID) && defined (HIUX_AUX_ID)
87 #define EXEC_AUX_ID HIUX_AUX_ID
88 #endif
89
90 #ifndef EXEC_AUX_ID
91 #define EXEC_AUX_ID 0
92 #endif
93
94 /* Size (in chars) of the temporary buffers used during fixup and string
95 table writes. */
96
97 #define SOM_TMP_BUFSIZE 8192
98
99 /* Size of the hash table in archives. */
100 #define SOM_LST_HASH_SIZE 31
101
102 /* Max number of SOMs to be found in an archive. */
103 #define SOM_LST_MODULE_LIMIT 1024
104
105 /* Generic alignment macro. */
106 #define SOM_ALIGN(val, alignment) \
107 (((val) + (alignment) - 1) &~ ((unsigned long) (alignment) - 1))
108
109 /* SOM allows any one of the four previous relocations to be reused
110 with a "R_PREV_FIXUP" relocation entry. Since R_PREV_FIXUP
111 relocations are always a single byte, using a R_PREV_FIXUP instead
112 of some multi-byte relocation makes object files smaller.
113
114 Note one side effect of using a R_PREV_FIXUP is the relocation that
115 is being repeated moves to the front of the queue. */
116 static struct reloc_queue
117 {
118 unsigned char *reloc;
119 unsigned int size;
120 } reloc_queue[4];
121
122 /* This fully describes the symbol types which may be attached to
123 an EXPORT or IMPORT directive. Only SOM uses this formation
124 (ELF has no need for it). */
125 typedef enum
126 {
127 SYMBOL_TYPE_UNKNOWN,
128 SYMBOL_TYPE_ABSOLUTE,
129 SYMBOL_TYPE_CODE,
130 SYMBOL_TYPE_DATA,
131 SYMBOL_TYPE_ENTRY,
132 SYMBOL_TYPE_MILLICODE,
133 SYMBOL_TYPE_PLABEL,
134 SYMBOL_TYPE_PRI_PROG,
135 SYMBOL_TYPE_SEC_PROG,
136 } pa_symbol_type;
137
138 struct section_to_type
139 {
140 const char *section;
141 char type;
142 };
143
144 /* Assorted symbol information that needs to be derived from the BFD symbol
145 and/or the BFD backend private symbol data. */
146 struct som_misc_symbol_info
147 {
148 unsigned int symbol_type;
149 unsigned int symbol_scope;
150 unsigned int arg_reloc;
151 unsigned int symbol_info;
152 unsigned int symbol_value;
153 unsigned int priv_level;
154 unsigned int secondary_def;
155 unsigned int is_comdat;
156 unsigned int is_common;
157 unsigned int dup_common;
158 };
159
160 /* Map SOM section names to POSIX/BSD single-character symbol types.
161
162 This table includes all the standard subspaces as defined in the
163 current "PRO ABI for PA-RISC Systems", $UNWIND$ which for
164 some reason was left out, and sections specific to embedded stabs. */
165
166 static const struct section_to_type stt[] =
167 {
168 {"$TEXT$", 't'},
169 {"$SHLIB_INFO$", 't'},
170 {"$MILLICODE$", 't'},
171 {"$LIT$", 't'},
172 {"$CODE$", 't'},
173 {"$UNWIND_START$", 't'},
174 {"$UNWIND$", 't'},
175 {"$PRIVATE$", 'd'},
176 {"$PLT$", 'd'},
177 {"$SHLIB_DATA$", 'd'},
178 {"$DATA$", 'd'},
179 {"$SHORTDATA$", 'g'},
180 {"$DLT$", 'd'},
181 {"$GLOBAL$", 'g'},
182 {"$SHORTBSS$", 's'},
183 {"$BSS$", 'b'},
184 {"$GDB_STRINGS$", 'N'},
185 {"$GDB_SYMBOLS$", 'N'},
186 {0, 0}
187 };
188
189 /* About the relocation formatting table...
190
191 There are 256 entries in the table, one for each possible
192 relocation opcode available in SOM. We index the table by
193 the relocation opcode. The names and operations are those
194 defined by a.out_800 (4).
195
196 Right now this table is only used to count and perform minimal
197 processing on relocation streams so that they can be internalized
198 into BFD and symbolically printed by utilities. To make actual use
199 of them would be much more difficult, BFD's concept of relocations
200 is far too simple to handle SOM relocations. The basic assumption
201 that a relocation can be completely processed independent of other
202 relocations before an object file is written is invalid for SOM.
203
204 The SOM relocations are meant to be processed as a stream, they
205 specify copying of data from the input section to the output section
206 while possibly modifying the data in some manner. They also can
207 specify that a variable number of zeros or uninitialized data be
208 inserted on in the output segment at the current offset. Some
209 relocations specify that some previous relocation be re-applied at
210 the current location in the input/output sections. And finally a number
211 of relocations have effects on other sections (R_ENTRY, R_EXIT,
212 R_UNWIND_AUX and a variety of others). There isn't even enough room
213 in the BFD relocation data structure to store enough information to
214 perform all the relocations.
215
216 Each entry in the table has three fields.
217
218 The first entry is an index into this "class" of relocations. This
219 index can then be used as a variable within the relocation itself.
220
221 The second field is a format string which actually controls processing
222 of the relocation. It uses a simple postfix machine to do calculations
223 based on variables/constants found in the string and the relocation
224 stream.
225
226 The third field specifys whether or not this relocation may use
227 a constant (V) from the previous R_DATA_OVERRIDE rather than a constant
228 stored in the instruction.
229
230 Variables:
231
232 L = input space byte count
233 D = index into class of relocations
234 M = output space byte count
235 N = statement number (unused?)
236 O = stack operation
237 R = parameter relocation bits
238 S = symbol index
239 T = first 32 bits of stack unwind information
240 U = second 32 bits of stack unwind information
241 V = a literal constant (usually used in the next relocation)
242 P = a previous relocation
243
244 Lower case letters (starting with 'b') refer to following
245 bytes in the relocation stream. 'b' is the next 1 byte,
246 c is the next 2 bytes, d is the next 3 bytes, etc...
247 This is the variable part of the relocation entries that
248 makes our life a living hell.
249
250 numerical constants are also used in the format string. Note
251 the constants are represented in decimal.
252
253 '+', "*" and "=" represents the obvious postfix operators.
254 '<' represents a left shift.
255
256 Stack Operations:
257
258 Parameter Relocation Bits:
259
260 Unwind Entries:
261
262 Previous Relocations: The index field represents which in the queue
263 of 4 previous fixups should be re-applied.
264
265 Literal Constants: These are generally used to represent addend
266 parts of relocations when these constants are not stored in the
267 fields of the instructions themselves. For example the instruction
268 addil foo-$global$-0x1234 would use an override for "0x1234" rather
269 than storing it into the addil itself. */
270
271 struct fixup_format
272 {
273 int D;
274 const char *format;
275 };
276
277 static const struct fixup_format som_fixup_formats[256] =
278 {
279 /* R_NO_RELOCATION. */
280 { 0, "LD1+4*=" }, /* 0x00 */
281 { 1, "LD1+4*=" }, /* 0x01 */
282 { 2, "LD1+4*=" }, /* 0x02 */
283 { 3, "LD1+4*=" }, /* 0x03 */
284 { 4, "LD1+4*=" }, /* 0x04 */
285 { 5, "LD1+4*=" }, /* 0x05 */
286 { 6, "LD1+4*=" }, /* 0x06 */
287 { 7, "LD1+4*=" }, /* 0x07 */
288 { 8, "LD1+4*=" }, /* 0x08 */
289 { 9, "LD1+4*=" }, /* 0x09 */
290 { 10, "LD1+4*=" }, /* 0x0a */
291 { 11, "LD1+4*=" }, /* 0x0b */
292 { 12, "LD1+4*=" }, /* 0x0c */
293 { 13, "LD1+4*=" }, /* 0x0d */
294 { 14, "LD1+4*=" }, /* 0x0e */
295 { 15, "LD1+4*=" }, /* 0x0f */
296 { 16, "LD1+4*=" }, /* 0x10 */
297 { 17, "LD1+4*=" }, /* 0x11 */
298 { 18, "LD1+4*=" }, /* 0x12 */
299 { 19, "LD1+4*=" }, /* 0x13 */
300 { 20, "LD1+4*=" }, /* 0x14 */
301 { 21, "LD1+4*=" }, /* 0x15 */
302 { 22, "LD1+4*=" }, /* 0x16 */
303 { 23, "LD1+4*=" }, /* 0x17 */
304 { 0, "LD8<b+1+4*=" }, /* 0x18 */
305 { 1, "LD8<b+1+4*=" }, /* 0x19 */
306 { 2, "LD8<b+1+4*=" }, /* 0x1a */
307 { 3, "LD8<b+1+4*=" }, /* 0x1b */
308 { 0, "LD16<c+1+4*=" }, /* 0x1c */
309 { 1, "LD16<c+1+4*=" }, /* 0x1d */
310 { 2, "LD16<c+1+4*=" }, /* 0x1e */
311 { 0, "Ld1+=" }, /* 0x1f */
312 /* R_ZEROES. */
313 { 0, "Lb1+4*=" }, /* 0x20 */
314 { 1, "Ld1+=" }, /* 0x21 */
315 /* R_UNINIT. */
316 { 0, "Lb1+4*=" }, /* 0x22 */
317 { 1, "Ld1+=" }, /* 0x23 */
318 /* R_RELOCATION. */
319 { 0, "L4=" }, /* 0x24 */
320 /* R_DATA_ONE_SYMBOL. */
321 { 0, "L4=Sb=" }, /* 0x25 */
322 { 1, "L4=Sd=" }, /* 0x26 */
323 /* R_DATA_PLABEL. */
324 { 0, "L4=Sb=" }, /* 0x27 */
325 { 1, "L4=Sd=" }, /* 0x28 */
326 /* R_SPACE_REF. */
327 { 0, "L4=" }, /* 0x29 */
328 /* R_REPEATED_INIT. */
329 { 0, "L4=Mb1+4*=" }, /* 0x2a */
330 { 1, "Lb4*=Mb1+L*=" }, /* 0x2b */
331 { 2, "Lb4*=Md1+4*=" }, /* 0x2c */
332 { 3, "Ld1+=Me1+=" }, /* 0x2d */
333 { 0, "" }, /* 0x2e */
334 { 0, "" }, /* 0x2f */
335 /* R_PCREL_CALL. */
336 { 0, "L4=RD=Sb=" }, /* 0x30 */
337 { 1, "L4=RD=Sb=" }, /* 0x31 */
338 { 2, "L4=RD=Sb=" }, /* 0x32 */
339 { 3, "L4=RD=Sb=" }, /* 0x33 */
340 { 4, "L4=RD=Sb=" }, /* 0x34 */
341 { 5, "L4=RD=Sb=" }, /* 0x35 */
342 { 6, "L4=RD=Sb=" }, /* 0x36 */
343 { 7, "L4=RD=Sb=" }, /* 0x37 */
344 { 8, "L4=RD=Sb=" }, /* 0x38 */
345 { 9, "L4=RD=Sb=" }, /* 0x39 */
346 { 0, "L4=RD8<b+=Sb=" }, /* 0x3a */
347 { 1, "L4=RD8<b+=Sb=" }, /* 0x3b */
348 { 0, "L4=RD8<b+=Sd=" }, /* 0x3c */
349 { 1, "L4=RD8<b+=Sd=" }, /* 0x3d */
350 /* R_SHORT_PCREL_MODE. */
351 { 0, "" }, /* 0x3e */
352 /* R_LONG_PCREL_MODE. */
353 { 0, "" }, /* 0x3f */
354 /* R_ABS_CALL. */
355 { 0, "L4=RD=Sb=" }, /* 0x40 */
356 { 1, "L4=RD=Sb=" }, /* 0x41 */
357 { 2, "L4=RD=Sb=" }, /* 0x42 */
358 { 3, "L4=RD=Sb=" }, /* 0x43 */
359 { 4, "L4=RD=Sb=" }, /* 0x44 */
360 { 5, "L4=RD=Sb=" }, /* 0x45 */
361 { 6, "L4=RD=Sb=" }, /* 0x46 */
362 { 7, "L4=RD=Sb=" }, /* 0x47 */
363 { 8, "L4=RD=Sb=" }, /* 0x48 */
364 { 9, "L4=RD=Sb=" }, /* 0x49 */
365 { 0, "L4=RD8<b+=Sb=" }, /* 0x4a */
366 { 1, "L4=RD8<b+=Sb=" }, /* 0x4b */
367 { 0, "L4=RD8<b+=Sd=" }, /* 0x4c */
368 { 1, "L4=RD8<b+=Sd=" }, /* 0x4d */
369 /* R_RESERVED. */
370 { 0, "" }, /* 0x4e */
371 { 0, "" }, /* 0x4f */
372 /* R_DP_RELATIVE. */
373 { 0, "L4=SD=" }, /* 0x50 */
374 { 1, "L4=SD=" }, /* 0x51 */
375 { 2, "L4=SD=" }, /* 0x52 */
376 { 3, "L4=SD=" }, /* 0x53 */
377 { 4, "L4=SD=" }, /* 0x54 */
378 { 5, "L4=SD=" }, /* 0x55 */
379 { 6, "L4=SD=" }, /* 0x56 */
380 { 7, "L4=SD=" }, /* 0x57 */
381 { 8, "L4=SD=" }, /* 0x58 */
382 { 9, "L4=SD=" }, /* 0x59 */
383 { 10, "L4=SD=" }, /* 0x5a */
384 { 11, "L4=SD=" }, /* 0x5b */
385 { 12, "L4=SD=" }, /* 0x5c */
386 { 13, "L4=SD=" }, /* 0x5d */
387 { 14, "L4=SD=" }, /* 0x5e */
388 { 15, "L4=SD=" }, /* 0x5f */
389 { 16, "L4=SD=" }, /* 0x60 */
390 { 17, "L4=SD=" }, /* 0x61 */
391 { 18, "L4=SD=" }, /* 0x62 */
392 { 19, "L4=SD=" }, /* 0x63 */
393 { 20, "L4=SD=" }, /* 0x64 */
394 { 21, "L4=SD=" }, /* 0x65 */
395 { 22, "L4=SD=" }, /* 0x66 */
396 { 23, "L4=SD=" }, /* 0x67 */
397 { 24, "L4=SD=" }, /* 0x68 */
398 { 25, "L4=SD=" }, /* 0x69 */
399 { 26, "L4=SD=" }, /* 0x6a */
400 { 27, "L4=SD=" }, /* 0x6b */
401 { 28, "L4=SD=" }, /* 0x6c */
402 { 29, "L4=SD=" }, /* 0x6d */
403 { 30, "L4=SD=" }, /* 0x6e */
404 { 31, "L4=SD=" }, /* 0x6f */
405 { 32, "L4=Sb=" }, /* 0x70 */
406 { 33, "L4=Sd=" }, /* 0x71 */
407 /* R_DATA_GPREL. */
408 { 0, "L4=Sd=" }, /* 0x72 */
409 /* R_RESERVED. */
410 { 0, "" }, /* 0x73 */
411 { 0, "" }, /* 0x74 */
412 { 0, "" }, /* 0x75 */
413 { 0, "" }, /* 0x76 */
414 { 0, "" }, /* 0x77 */
415 /* R_DLT_REL. */
416 { 0, "L4=Sb=" }, /* 0x78 */
417 { 1, "L4=Sd=" }, /* 0x79 */
418 /* R_RESERVED. */
419 { 0, "" }, /* 0x7a */
420 { 0, "" }, /* 0x7b */
421 { 0, "" }, /* 0x7c */
422 { 0, "" }, /* 0x7d */
423 { 0, "" }, /* 0x7e */
424 { 0, "" }, /* 0x7f */
425 /* R_CODE_ONE_SYMBOL. */
426 { 0, "L4=SD=" }, /* 0x80 */
427 { 1, "L4=SD=" }, /* 0x81 */
428 { 2, "L4=SD=" }, /* 0x82 */
429 { 3, "L4=SD=" }, /* 0x83 */
430 { 4, "L4=SD=" }, /* 0x84 */
431 { 5, "L4=SD=" }, /* 0x85 */
432 { 6, "L4=SD=" }, /* 0x86 */
433 { 7, "L4=SD=" }, /* 0x87 */
434 { 8, "L4=SD=" }, /* 0x88 */
435 { 9, "L4=SD=" }, /* 0x89 */
436 { 10, "L4=SD=" }, /* 0x8q */
437 { 11, "L4=SD=" }, /* 0x8b */
438 { 12, "L4=SD=" }, /* 0x8c */
439 { 13, "L4=SD=" }, /* 0x8d */
440 { 14, "L4=SD=" }, /* 0x8e */
441 { 15, "L4=SD=" }, /* 0x8f */
442 { 16, "L4=SD=" }, /* 0x90 */
443 { 17, "L4=SD=" }, /* 0x91 */
444 { 18, "L4=SD=" }, /* 0x92 */
445 { 19, "L4=SD=" }, /* 0x93 */
446 { 20, "L4=SD=" }, /* 0x94 */
447 { 21, "L4=SD=" }, /* 0x95 */
448 { 22, "L4=SD=" }, /* 0x96 */
449 { 23, "L4=SD=" }, /* 0x97 */
450 { 24, "L4=SD=" }, /* 0x98 */
451 { 25, "L4=SD=" }, /* 0x99 */
452 { 26, "L4=SD=" }, /* 0x9a */
453 { 27, "L4=SD=" }, /* 0x9b */
454 { 28, "L4=SD=" }, /* 0x9c */
455 { 29, "L4=SD=" }, /* 0x9d */
456 { 30, "L4=SD=" }, /* 0x9e */
457 { 31, "L4=SD=" }, /* 0x9f */
458 { 32, "L4=Sb=" }, /* 0xa0 */
459 { 33, "L4=Sd=" }, /* 0xa1 */
460 /* R_RESERVED. */
461 { 0, "" }, /* 0xa2 */
462 { 0, "" }, /* 0xa3 */
463 { 0, "" }, /* 0xa4 */
464 { 0, "" }, /* 0xa5 */
465 { 0, "" }, /* 0xa6 */
466 { 0, "" }, /* 0xa7 */
467 { 0, "" }, /* 0xa8 */
468 { 0, "" }, /* 0xa9 */
469 { 0, "" }, /* 0xaa */
470 { 0, "" }, /* 0xab */
471 { 0, "" }, /* 0xac */
472 { 0, "" }, /* 0xad */
473 /* R_MILLI_REL. */
474 { 0, "L4=Sb=" }, /* 0xae */
475 { 1, "L4=Sd=" }, /* 0xaf */
476 /* R_CODE_PLABEL. */
477 { 0, "L4=Sb=" }, /* 0xb0 */
478 { 1, "L4=Sd=" }, /* 0xb1 */
479 /* R_BREAKPOINT. */
480 { 0, "L4=" }, /* 0xb2 */
481 /* R_ENTRY. */
482 { 0, "Te=Ue=" }, /* 0xb3 */
483 { 1, "Uf=" }, /* 0xb4 */
484 /* R_ALT_ENTRY. */
485 { 0, "" }, /* 0xb5 */
486 /* R_EXIT. */
487 { 0, "" }, /* 0xb6 */
488 /* R_BEGIN_TRY. */
489 { 0, "" }, /* 0xb7 */
490 /* R_END_TRY. */
491 { 0, "R0=" }, /* 0xb8 */
492 { 1, "Rb4*=" }, /* 0xb9 */
493 { 2, "Rd4*=" }, /* 0xba */
494 /* R_BEGIN_BRTAB. */
495 { 0, "" }, /* 0xbb */
496 /* R_END_BRTAB. */
497 { 0, "" }, /* 0xbc */
498 /* R_STATEMENT. */
499 { 0, "Nb=" }, /* 0xbd */
500 { 1, "Nc=" }, /* 0xbe */
501 { 2, "Nd=" }, /* 0xbf */
502 /* R_DATA_EXPR. */
503 { 0, "L4=" }, /* 0xc0 */
504 /* R_CODE_EXPR. */
505 { 0, "L4=" }, /* 0xc1 */
506 /* R_FSEL. */
507 { 0, "" }, /* 0xc2 */
508 /* R_LSEL. */
509 { 0, "" }, /* 0xc3 */
510 /* R_RSEL. */
511 { 0, "" }, /* 0xc4 */
512 /* R_N_MODE. */
513 { 0, "" }, /* 0xc5 */
514 /* R_S_MODE. */
515 { 0, "" }, /* 0xc6 */
516 /* R_D_MODE. */
517 { 0, "" }, /* 0xc7 */
518 /* R_R_MODE. */
519 { 0, "" }, /* 0xc8 */
520 /* R_DATA_OVERRIDE. */
521 { 0, "V0=" }, /* 0xc9 */
522 { 1, "Vb=" }, /* 0xca */
523 { 2, "Vc=" }, /* 0xcb */
524 { 3, "Vd=" }, /* 0xcc */
525 { 4, "Ve=" }, /* 0xcd */
526 /* R_TRANSLATED. */
527 { 0, "" }, /* 0xce */
528 /* R_AUX_UNWIND. */
529 { 0,"Sd=Ve=Ee=" }, /* 0xcf */
530 /* R_COMP1. */
531 { 0, "Ob=" }, /* 0xd0 */
532 /* R_COMP2. */
533 { 0, "Ob=Sd=" }, /* 0xd1 */
534 /* R_COMP3. */
535 { 0, "Ob=Ve=" }, /* 0xd2 */
536 /* R_PREV_FIXUP. */
537 { 0, "P" }, /* 0xd3 */
538 { 1, "P" }, /* 0xd4 */
539 { 2, "P" }, /* 0xd5 */
540 { 3, "P" }, /* 0xd6 */
541 /* R_SEC_STMT. */
542 { 0, "" }, /* 0xd7 */
543 /* R_N0SEL. */
544 { 0, "" }, /* 0xd8 */
545 /* R_N1SEL. */
546 { 0, "" }, /* 0xd9 */
547 /* R_LINETAB. */
548 { 0, "Eb=Sd=Ve=" }, /* 0xda */
549 /* R_LINETAB_ESC. */
550 { 0, "Eb=Mb=" }, /* 0xdb */
551 /* R_LTP_OVERRIDE. */
552 { 0, "" }, /* 0xdc */
553 /* R_COMMENT. */
554 { 0, "Ob=Vf=" }, /* 0xdd */
555 /* R_RESERVED. */
556 { 0, "" }, /* 0xde */
557 { 0, "" }, /* 0xdf */
558 { 0, "" }, /* 0xe0 */
559 { 0, "" }, /* 0xe1 */
560 { 0, "" }, /* 0xe2 */
561 { 0, "" }, /* 0xe3 */
562 { 0, "" }, /* 0xe4 */
563 { 0, "" }, /* 0xe5 */
564 { 0, "" }, /* 0xe6 */
565 { 0, "" }, /* 0xe7 */
566 { 0, "" }, /* 0xe8 */
567 { 0, "" }, /* 0xe9 */
568 { 0, "" }, /* 0xea */
569 { 0, "" }, /* 0xeb */
570 { 0, "" }, /* 0xec */
571 { 0, "" }, /* 0xed */
572 { 0, "" }, /* 0xee */
573 { 0, "" }, /* 0xef */
574 { 0, "" }, /* 0xf0 */
575 { 0, "" }, /* 0xf1 */
576 { 0, "" }, /* 0xf2 */
577 { 0, "" }, /* 0xf3 */
578 { 0, "" }, /* 0xf4 */
579 { 0, "" }, /* 0xf5 */
580 { 0, "" }, /* 0xf6 */
581 { 0, "" }, /* 0xf7 */
582 { 0, "" }, /* 0xf8 */
583 { 0, "" }, /* 0xf9 */
584 { 0, "" }, /* 0xfa */
585 { 0, "" }, /* 0xfb */
586 { 0, "" }, /* 0xfc */
587 { 0, "" }, /* 0xfd */
588 { 0, "" }, /* 0xfe */
589 { 0, "" }, /* 0xff */
590 };
591
592 static const int comp1_opcodes[] =
593 {
594 0x00,
595 0x40,
596 0x41,
597 0x42,
598 0x43,
599 0x44,
600 0x45,
601 0x46,
602 0x47,
603 0x48,
604 0x49,
605 0x4a,
606 0x4b,
607 0x60,
608 0x80,
609 0xa0,
610 0xc0,
611 -1
612 };
613
614 static const int comp2_opcodes[] =
615 {
616 0x00,
617 0x80,
618 0x82,
619 0xc0,
620 -1
621 };
622
623 static const int comp3_opcodes[] =
624 {
625 0x00,
626 0x02,
627 -1
628 };
629
630 /* These apparently are not in older versions of hpux reloc.h (hpux7). */
631
632 /* And these first appeared in hpux10. */
633 #ifndef R_SHORT_PCREL_MODE
634 #define NO_PCREL_MODES
635 #define R_SHORT_PCREL_MODE 0x3e
636 #endif
637
638 #define SOM_HOWTO(TYPE, NAME) \
639 HOWTO(TYPE, 0, 0, 32, false, 0, 0, hppa_som_reloc, NAME, false, 0, 0, false)
640
641 static reloc_howto_type som_hppa_howto_table[] =
642 {
643 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
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_ZEROES, "R_ZEROES"),
676 SOM_HOWTO (R_ZEROES, "R_ZEROES"),
677 SOM_HOWTO (R_UNINIT, "R_UNINIT"),
678 SOM_HOWTO (R_UNINIT, "R_UNINIT"),
679 SOM_HOWTO (R_RELOCATION, "R_RELOCATION"),
680 SOM_HOWTO (R_DATA_ONE_SYMBOL, "R_DATA_ONE_SYMBOL"),
681 SOM_HOWTO (R_DATA_ONE_SYMBOL, "R_DATA_ONE_SYMBOL"),
682 SOM_HOWTO (R_DATA_PLABEL, "R_DATA_PLABEL"),
683 SOM_HOWTO (R_DATA_PLABEL, "R_DATA_PLABEL"),
684 SOM_HOWTO (R_SPACE_REF, "R_SPACE_REF"),
685 SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"),
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_RESERVED, "R_RESERVED"),
690 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
691 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
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_SHORT_PCREL_MODE, "R_SHORT_PCREL_MODE"),
706 SOM_HOWTO (R_LONG_PCREL_MODE, "R_LONG_PCREL_MODE"),
707 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
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_RESERVED, "R_RESERVED"),
722 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
723 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
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_DATA_GPREL, "R_DATA_GPREL"),
758 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
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_DLT_REL, "R_DLT_REL"),
764 SOM_HOWTO (R_DLT_REL, "R_DLT_REL"),
765 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
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_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
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_RESERVED, "R_RESERVED"),
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_MILLI_REL, "R_MILLI_REL"),
818 SOM_HOWTO (R_MILLI_REL, "R_MILLI_REL"),
819 SOM_HOWTO (R_CODE_PLABEL, "R_CODE_PLABEL"),
820 SOM_HOWTO (R_CODE_PLABEL, "R_CODE_PLABEL"),
821 SOM_HOWTO (R_BREAKPOINT, "R_BREAKPOINT"),
822 SOM_HOWTO (R_ENTRY, "R_ENTRY"),
823 SOM_HOWTO (R_ENTRY, "R_ENTRY"),
824 SOM_HOWTO (R_ALT_ENTRY, "R_ALT_ENTRY"),
825 SOM_HOWTO (R_EXIT, "R_EXIT"),
826 SOM_HOWTO (R_BEGIN_TRY, "R_BEGIN_TRY"),
827 SOM_HOWTO (R_END_TRY, "R_END_TRY"),
828 SOM_HOWTO (R_END_TRY, "R_END_TRY"),
829 SOM_HOWTO (R_END_TRY, "R_END_TRY"),
830 SOM_HOWTO (R_BEGIN_BRTAB, "R_BEGIN_BRTAB"),
831 SOM_HOWTO (R_END_BRTAB, "R_END_BRTAB"),
832 SOM_HOWTO (R_STATEMENT, "R_STATEMENT"),
833 SOM_HOWTO (R_STATEMENT, "R_STATEMENT"),
834 SOM_HOWTO (R_STATEMENT, "R_STATEMENT"),
835 SOM_HOWTO (R_DATA_EXPR, "R_DATA_EXPR"),
836 SOM_HOWTO (R_CODE_EXPR, "R_CODE_EXPR"),
837 SOM_HOWTO (R_FSEL, "R_FSEL"),
838 SOM_HOWTO (R_LSEL, "R_LSEL"),
839 SOM_HOWTO (R_RSEL, "R_RSEL"),
840 SOM_HOWTO (R_N_MODE, "R_N_MODE"),
841 SOM_HOWTO (R_S_MODE, "R_S_MODE"),
842 SOM_HOWTO (R_D_MODE, "R_D_MODE"),
843 SOM_HOWTO (R_R_MODE, "R_R_MODE"),
844 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"),
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_TRANSLATED, "R_TRANSLATED"),
850 SOM_HOWTO (R_AUX_UNWIND, "R_AUX_UNWIND"),
851 SOM_HOWTO (R_COMP1, "R_COMP1"),
852 SOM_HOWTO (R_COMP2, "R_COMP2"),
853 SOM_HOWTO (R_COMP3, "R_COMP3"),
854 SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"),
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_SEC_STMT, "R_SEC_STMT"),
859 SOM_HOWTO (R_N0SEL, "R_N0SEL"),
860 SOM_HOWTO (R_N1SEL, "R_N1SEL"),
861 SOM_HOWTO (R_LINETAB, "R_LINETAB"),
862 SOM_HOWTO (R_LINETAB_ESC, "R_LINETAB_ESC"),
863 SOM_HOWTO (R_LTP_OVERRIDE, "R_LTP_OVERRIDE"),
864 SOM_HOWTO (R_COMMENT, "R_COMMENT"),
865 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
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 };
900
901 /* Initialize the SOM relocation queue. By definition the queue holds
902 the last four multibyte fixups. */
903
904 static void
905 som_initialize_reloc_queue (struct reloc_queue *queue)
906 {
907 queue[0].reloc = NULL;
908 queue[0].size = 0;
909 queue[1].reloc = NULL;
910 queue[1].size = 0;
911 queue[2].reloc = NULL;
912 queue[2].size = 0;
913 queue[3].reloc = NULL;
914 queue[3].size = 0;
915 }
916
917 /* Insert a new relocation into the relocation queue. */
918
919 static void
920 som_reloc_queue_insert (unsigned char *p,
921 unsigned int size,
922 struct reloc_queue *queue)
923 {
924 queue[3].reloc = queue[2].reloc;
925 queue[3].size = queue[2].size;
926 queue[2].reloc = queue[1].reloc;
927 queue[2].size = queue[1].size;
928 queue[1].reloc = queue[0].reloc;
929 queue[1].size = queue[0].size;
930 queue[0].reloc = p;
931 queue[0].size = size;
932 }
933
934 /* When an entry in the relocation queue is reused, the entry moves
935 to the front of the queue. */
936
937 static void
938 som_reloc_queue_fix (struct reloc_queue *queue, unsigned int idx)
939 {
940 if (idx == 0)
941 return;
942
943 if (idx == 1)
944 {
945 unsigned char *tmp1 = queue[0].reloc;
946 unsigned int tmp2 = queue[0].size;
947
948 queue[0].reloc = queue[1].reloc;
949 queue[0].size = queue[1].size;
950 queue[1].reloc = tmp1;
951 queue[1].size = tmp2;
952 return;
953 }
954
955 if (idx == 2)
956 {
957 unsigned char *tmp1 = queue[0].reloc;
958 unsigned int tmp2 = queue[0].size;
959
960 queue[0].reloc = queue[2].reloc;
961 queue[0].size = queue[2].size;
962 queue[2].reloc = queue[1].reloc;
963 queue[2].size = queue[1].size;
964 queue[1].reloc = tmp1;
965 queue[1].size = tmp2;
966 return;
967 }
968
969 if (idx == 3)
970 {
971 unsigned char *tmp1 = queue[0].reloc;
972 unsigned int tmp2 = queue[0].size;
973
974 queue[0].reloc = queue[3].reloc;
975 queue[0].size = queue[3].size;
976 queue[3].reloc = queue[2].reloc;
977 queue[3].size = queue[2].size;
978 queue[2].reloc = queue[1].reloc;
979 queue[2].size = queue[1].size;
980 queue[1].reloc = tmp1;
981 queue[1].size = tmp2;
982 return;
983 }
984 abort ();
985 }
986
987 /* Search for a particular relocation in the relocation queue. */
988
989 static int
990 som_reloc_queue_find (unsigned char *p,
991 unsigned int size,
992 struct reloc_queue *queue)
993 {
994 if (queue[0].reloc && !memcmp (p, queue[0].reloc, size)
995 && size == queue[0].size)
996 return 0;
997 if (queue[1].reloc && !memcmp (p, queue[1].reloc, size)
998 && size == queue[1].size)
999 return 1;
1000 if (queue[2].reloc && !memcmp (p, queue[2].reloc, size)
1001 && size == queue[2].size)
1002 return 2;
1003 if (queue[3].reloc && !memcmp (p, queue[3].reloc, size)
1004 && size == queue[3].size)
1005 return 3;
1006 return -1;
1007 }
1008
1009 static unsigned char *
1010 try_prev_fixup (bfd *abfd ATTRIBUTE_UNUSED,
1011 unsigned int *subspace_reloc_sizep,
1012 unsigned char *p,
1013 unsigned int size,
1014 struct reloc_queue *queue)
1015 {
1016 int queue_index = som_reloc_queue_find (p, size, queue);
1017
1018 if (queue_index != -1)
1019 {
1020 /* Found this in a previous fixup. Undo the fixup we
1021 just built and use R_PREV_FIXUP instead. We saved
1022 a total of size - 1 bytes in the fixup stream. */
1023 bfd_put_8 (abfd, R_PREV_FIXUP + queue_index, p);
1024 p += 1;
1025 *subspace_reloc_sizep += 1;
1026 som_reloc_queue_fix (queue, queue_index);
1027 }
1028 else
1029 {
1030 som_reloc_queue_insert (p, size, queue);
1031 *subspace_reloc_sizep += size;
1032 p += size;
1033 }
1034 return p;
1035 }
1036
1037 /* Emit the proper R_NO_RELOCATION fixups to map the next SKIP
1038 bytes without any relocation. Update the size of the subspace
1039 relocation stream via SUBSPACE_RELOC_SIZE_P; also return the
1040 current pointer into the relocation stream. */
1041
1042 static unsigned char *
1043 som_reloc_skip (bfd *abfd,
1044 unsigned int skip,
1045 unsigned char *p,
1046 unsigned int *subspace_reloc_sizep,
1047 struct reloc_queue *queue)
1048 {
1049 /* Use a 4 byte R_NO_RELOCATION entry with a maximal value
1050 then R_PREV_FIXUPs to get the difference down to a
1051 reasonable size. */
1052 if (skip >= 0x1000000)
1053 {
1054 skip -= 0x1000000;
1055 bfd_put_8 (abfd, R_NO_RELOCATION + 31, p);
1056 bfd_put_8 (abfd, 0xff, p + 1);
1057 bfd_put_16 (abfd, (bfd_vma) 0xffff, p + 2);
1058 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue);
1059 while (skip >= 0x1000000)
1060 {
1061 skip -= 0x1000000;
1062 bfd_put_8 (abfd, R_PREV_FIXUP, p);
1063 p++;
1064 *subspace_reloc_sizep += 1;
1065 /* No need to adjust queue here since we are repeating the
1066 most recent fixup. */
1067 }
1068 }
1069
1070 /* The difference must be less than 0x1000000. Use one
1071 more R_NO_RELOCATION entry to get to the right difference. */
1072 if ((skip & 3) == 0 && skip <= 0xc0000 && skip > 0)
1073 {
1074 /* Difference can be handled in a simple single-byte
1075 R_NO_RELOCATION entry. */
1076 if (skip <= 0x60)
1077 {
1078 bfd_put_8 (abfd, R_NO_RELOCATION + (skip >> 2) - 1, p);
1079 *subspace_reloc_sizep += 1;
1080 p++;
1081 }
1082 /* Handle it with a two byte R_NO_RELOCATION entry. */
1083 else if (skip <= 0x1000)
1084 {
1085 bfd_put_8 (abfd, R_NO_RELOCATION + 24 + (((skip >> 2) - 1) >> 8), p);
1086 bfd_put_8 (abfd, (skip >> 2) - 1, p + 1);
1087 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue);
1088 }
1089 /* Handle it with a three byte R_NO_RELOCATION entry. */
1090 else
1091 {
1092 bfd_put_8 (abfd, R_NO_RELOCATION + 28 + (((skip >> 2) - 1) >> 16), p);
1093 bfd_put_16 (abfd, (bfd_vma) (skip >> 2) - 1, p + 1);
1094 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue);
1095 }
1096 }
1097 /* Ugh. Punt and use a 4 byte entry. */
1098 else if (skip > 0)
1099 {
1100 bfd_put_8 (abfd, R_NO_RELOCATION + 31, p);
1101 bfd_put_8 (abfd, (skip - 1) >> 16, p + 1);
1102 bfd_put_16 (abfd, (bfd_vma) skip - 1, p + 2);
1103 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue);
1104 }
1105 return p;
1106 }
1107
1108 /* Emit the proper R_DATA_OVERRIDE fixups to handle a nonzero addend
1109 from a BFD relocation. Update the size of the subspace relocation
1110 stream via SUBSPACE_RELOC_SIZE_P; also return the current pointer
1111 into the relocation stream. */
1112
1113 static unsigned char *
1114 som_reloc_addend (bfd *abfd,
1115 bfd_vma addend,
1116 unsigned char *p,
1117 unsigned int *subspace_reloc_sizep,
1118 struct reloc_queue *queue)
1119 {
1120 if (addend + 0x80 < 0x100)
1121 {
1122 bfd_put_8 (abfd, R_DATA_OVERRIDE + 1, p);
1123 bfd_put_8 (abfd, addend, p + 1);
1124 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue);
1125 }
1126 else if (addend + 0x8000 < 0x10000)
1127 {
1128 bfd_put_8 (abfd, R_DATA_OVERRIDE + 2, p);
1129 bfd_put_16 (abfd, addend, p + 1);
1130 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue);
1131 }
1132 else if (addend + 0x800000 < 0x1000000)
1133 {
1134 bfd_put_8 (abfd, R_DATA_OVERRIDE + 3, p);
1135 bfd_put_8 (abfd, addend >> 16, p + 1);
1136 bfd_put_16 (abfd, addend, p + 2);
1137 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue);
1138 }
1139 else
1140 {
1141 bfd_put_8 (abfd, R_DATA_OVERRIDE + 4, p);
1142 bfd_put_32 (abfd, addend, p + 1);
1143 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 5, queue);
1144 }
1145 return p;
1146 }
1147
1148 /* Handle a single function call relocation. */
1149
1150 static unsigned char *
1151 som_reloc_call (bfd *abfd,
1152 unsigned char *p,
1153 unsigned int *subspace_reloc_sizep,
1154 arelent *bfd_reloc,
1155 int sym_num,
1156 struct reloc_queue *queue)
1157 {
1158 int arg_bits = HPPA_R_ARG_RELOC (bfd_reloc->addend);
1159 int rtn_bits = arg_bits & 0x3;
1160 int type, done = 0;
1161
1162 /* You'll never believe all this is necessary to handle relocations
1163 for function calls. Having to compute and pack the argument
1164 relocation bits is the real nightmare.
1165
1166 If you're interested in how this works, just forget it. You really
1167 do not want to know about this braindamage. */
1168
1169 /* First see if this can be done with a "simple" relocation. Simple
1170 relocations have a symbol number < 0x100 and have simple encodings
1171 of argument relocations. */
1172
1173 if (sym_num < 0x100)
1174 {
1175 switch (arg_bits)
1176 {
1177 case 0:
1178 case 1:
1179 type = 0;
1180 break;
1181 case 1 << 8:
1182 case 1 << 8 | 1:
1183 type = 1;
1184 break;
1185 case 1 << 8 | 1 << 6:
1186 case 1 << 8 | 1 << 6 | 1:
1187 type = 2;
1188 break;
1189 case 1 << 8 | 1 << 6 | 1 << 4:
1190 case 1 << 8 | 1 << 6 | 1 << 4 | 1:
1191 type = 3;
1192 break;
1193 case 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2:
1194 case 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2 | 1:
1195 type = 4;
1196 break;
1197 default:
1198 /* Not one of the easy encodings. This will have to be
1199 handled by the more complex code below. */
1200 type = -1;
1201 break;
1202 }
1203 if (type != -1)
1204 {
1205 /* Account for the return value too. */
1206 if (rtn_bits)
1207 type += 5;
1208
1209 /* Emit a 2 byte relocation. Then see if it can be handled
1210 with a relocation which is already in the relocation queue. */
1211 bfd_put_8 (abfd, bfd_reloc->howto->type + type, p);
1212 bfd_put_8 (abfd, sym_num, p + 1);
1213 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue);
1214 done = 1;
1215 }
1216 }
1217
1218 /* If this could not be handled with a simple relocation, then do a hard
1219 one. Hard relocations occur if the symbol number was too high or if
1220 the encoding of argument relocation bits is too complex. */
1221 if (! done)
1222 {
1223 /* Don't ask about these magic sequences. I took them straight
1224 from gas-1.36 which took them from the a.out man page. */
1225 type = rtn_bits;
1226 if ((arg_bits >> 6 & 0xf) == 0xe)
1227 type += 9 * 40;
1228 else
1229 type += (3 * (arg_bits >> 8 & 3) + (arg_bits >> 6 & 3)) * 40;
1230 if ((arg_bits >> 2 & 0xf) == 0xe)
1231 type += 9 * 4;
1232 else
1233 type += (3 * (arg_bits >> 4 & 3) + (arg_bits >> 2 & 3)) * 4;
1234
1235 /* Output the first two bytes of the relocation. These describe
1236 the length of the relocation and encoding style. */
1237 bfd_put_8 (abfd, bfd_reloc->howto->type + 10
1238 + 2 * (sym_num >= 0x100) + (type >= 0x100),
1239 p);
1240 bfd_put_8 (abfd, type, p + 1);
1241
1242 /* Now output the symbol index and see if this bizarre relocation
1243 just happened to be in the relocation queue. */
1244 if (sym_num < 0x100)
1245 {
1246 bfd_put_8 (abfd, sym_num, p + 2);
1247 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue);
1248 }
1249 else
1250 {
1251 bfd_put_8 (abfd, sym_num >> 16, p + 2);
1252 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 3);
1253 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 5, queue);
1254 }
1255 }
1256 return p;
1257 }
1258
1259 /* Return the logarithm of X, base 2, considering X unsigned,
1260 if X is a power of 2. Otherwise, returns -1. */
1261
1262 static int
1263 exact_log2 (unsigned int x)
1264 {
1265 int log = 0;
1266
1267 /* Test for 0 or a power of 2. */
1268 if (x == 0 || x != (x & -x))
1269 return -1;
1270
1271 while ((x >>= 1) != 0)
1272 log++;
1273 return log;
1274 }
1275
1276 static bfd_reloc_status_type
1277 hppa_som_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1278 arelent *reloc_entry,
1279 asymbol *symbol_in ATTRIBUTE_UNUSED,
1280 void *data ATTRIBUTE_UNUSED,
1281 asection *input_section,
1282 bfd *output_bfd,
1283 char **error_message ATTRIBUTE_UNUSED)
1284 {
1285 if (output_bfd)
1286 reloc_entry->address += input_section->output_offset;
1287
1288 return bfd_reloc_ok;
1289 }
1290
1291 /* Given a generic HPPA relocation type, the instruction format,
1292 and a field selector, return one or more appropriate SOM relocations. */
1293
1294 int **
1295 hppa_som_gen_reloc_type (bfd *abfd,
1296 int base_type,
1297 int format,
1298 enum hppa_reloc_field_selector_type_alt field,
1299 int sym_diff,
1300 asymbol *sym)
1301 {
1302 int *final_type, **final_types;
1303
1304 final_types = bfd_alloc (abfd, (bfd_size_type) sizeof (int *) * 6);
1305 final_type = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1306 if (!final_types || !final_type)
1307 return NULL;
1308
1309 /* The field selector may require additional relocations to be
1310 generated. It's impossible to know at this moment if additional
1311 relocations will be needed, so we make them. The code to actually
1312 write the relocation/fixup stream is responsible for removing
1313 any redundant relocations. */
1314 switch (field)
1315 {
1316 case e_fsel:
1317 case e_psel:
1318 case e_lpsel:
1319 case e_rpsel:
1320 final_types[0] = final_type;
1321 final_types[1] = NULL;
1322 final_types[2] = NULL;
1323 *final_type = base_type;
1324 break;
1325
1326 case e_tsel:
1327 case e_ltsel:
1328 case e_rtsel:
1329 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1330 if (!final_types[0])
1331 return NULL;
1332 if (field == e_tsel)
1333 *final_types[0] = R_FSEL;
1334 else if (field == e_ltsel)
1335 *final_types[0] = R_LSEL;
1336 else
1337 *final_types[0] = R_RSEL;
1338 final_types[1] = final_type;
1339 final_types[2] = NULL;
1340 *final_type = base_type;
1341 break;
1342
1343 case e_lssel:
1344 case e_rssel:
1345 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1346 if (!final_types[0])
1347 return NULL;
1348 *final_types[0] = R_S_MODE;
1349 final_types[1] = final_type;
1350 final_types[2] = NULL;
1351 *final_type = base_type;
1352 break;
1353
1354 case e_lsel:
1355 case e_rsel:
1356 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1357 if (!final_types[0])
1358 return NULL;
1359 *final_types[0] = R_N_MODE;
1360 final_types[1] = final_type;
1361 final_types[2] = NULL;
1362 *final_type = base_type;
1363 break;
1364
1365 case e_ldsel:
1366 case e_rdsel:
1367 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1368 if (!final_types[0])
1369 return NULL;
1370 *final_types[0] = R_D_MODE;
1371 final_types[1] = final_type;
1372 final_types[2] = NULL;
1373 *final_type = base_type;
1374 break;
1375
1376 case e_lrsel:
1377 case e_rrsel:
1378 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1379 if (!final_types[0])
1380 return NULL;
1381 *final_types[0] = R_R_MODE;
1382 final_types[1] = final_type;
1383 final_types[2] = NULL;
1384 *final_type = base_type;
1385 break;
1386
1387 case e_nsel:
1388 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1389 if (!final_types[0])
1390 return NULL;
1391 *final_types[0] = R_N1SEL;
1392 final_types[1] = final_type;
1393 final_types[2] = NULL;
1394 *final_type = base_type;
1395 break;
1396
1397 case e_nlsel:
1398 case e_nlrsel:
1399 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1400 if (!final_types[0])
1401 return NULL;
1402 *final_types[0] = R_N0SEL;
1403 final_types[1] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1404 if (!final_types[1])
1405 return NULL;
1406 if (field == e_nlsel)
1407 *final_types[1] = R_N_MODE;
1408 else
1409 *final_types[1] = R_R_MODE;
1410 final_types[2] = final_type;
1411 final_types[3] = NULL;
1412 *final_type = base_type;
1413 break;
1414
1415 /* FIXME: These two field selectors are not currently supported. */
1416 case e_ltpsel:
1417 case e_rtpsel:
1418 abort ();
1419 }
1420
1421 switch (base_type)
1422 {
1423 case R_HPPA:
1424 /* The difference of two symbols needs *very* special handling. */
1425 if (sym_diff)
1426 {
1427 size_t amt = sizeof (int);
1428
1429 final_types[0] = bfd_alloc (abfd, amt);
1430 final_types[1] = bfd_alloc (abfd, amt);
1431 final_types[2] = bfd_alloc (abfd, amt);
1432 final_types[3] = bfd_alloc (abfd, amt);
1433 if (!final_types[0] || !final_types[1] || !final_types[2])
1434 return NULL;
1435 if (field == e_fsel)
1436 *final_types[0] = R_FSEL;
1437 else if (field == e_rsel)
1438 *final_types[0] = R_RSEL;
1439 else if (field == e_lsel)
1440 *final_types[0] = R_LSEL;
1441 *final_types[1] = R_COMP2;
1442 *final_types[2] = R_COMP2;
1443 *final_types[3] = R_COMP1;
1444 final_types[4] = final_type;
1445 if (format == 32)
1446 *final_types[4] = R_DATA_EXPR;
1447 else
1448 *final_types[4] = R_CODE_EXPR;
1449 final_types[5] = NULL;
1450 break;
1451 }
1452 /* PLABELs get their own relocation type. */
1453 else if (field == e_psel
1454 || field == e_lpsel
1455 || field == e_rpsel)
1456 {
1457 /* A PLABEL relocation that has a size of 32 bits must
1458 be a R_DATA_PLABEL. All others are R_CODE_PLABELs. */
1459 if (format == 32)
1460 *final_type = R_DATA_PLABEL;
1461 else
1462 *final_type = R_CODE_PLABEL;
1463 }
1464 /* PIC stuff. */
1465 else if (field == e_tsel
1466 || field == e_ltsel
1467 || field == e_rtsel)
1468 *final_type = R_DLT_REL;
1469 /* A relocation in the data space is always a full 32bits. */
1470 else if (format == 32)
1471 {
1472 *final_type = R_DATA_ONE_SYMBOL;
1473
1474 /* If there's no SOM symbol type associated with this BFD
1475 symbol, then set the symbol type to ST_DATA.
1476
1477 Only do this if the type is going to default later when
1478 we write the object file.
1479
1480 This is done so that the linker never encounters an
1481 R_DATA_ONE_SYMBOL reloc involving an ST_CODE symbol.
1482
1483 This allows the compiler to generate exception handling
1484 tables.
1485
1486 Note that one day we may need to also emit BEGIN_BRTAB and
1487 END_BRTAB to prevent the linker from optimizing away insns
1488 in exception handling regions. */
1489 if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN
1490 && (sym->flags & BSF_SECTION_SYM) == 0
1491 && (sym->flags & BSF_FUNCTION) == 0
1492 && ! bfd_is_com_section (sym->section))
1493 som_symbol_data (sym)->som_type = SYMBOL_TYPE_DATA;
1494 }
1495 break;
1496
1497 case R_HPPA_GOTOFF:
1498 /* More PLABEL special cases. */
1499 if (field == e_psel
1500 || field == e_lpsel
1501 || field == e_rpsel)
1502 *final_type = R_DATA_PLABEL;
1503 else if (field == e_fsel && format == 32)
1504 *final_type = R_DATA_GPREL;
1505 break;
1506
1507 case R_HPPA_COMPLEX:
1508 /* The difference of two symbols needs *very* special handling. */
1509 if (sym_diff)
1510 {
1511 size_t amt = sizeof (int);
1512
1513 final_types[0] = bfd_alloc (abfd, amt);
1514 final_types[1] = bfd_alloc (abfd, amt);
1515 final_types[2] = bfd_alloc (abfd, amt);
1516 final_types[3] = bfd_alloc (abfd, amt);
1517 if (!final_types[0] || !final_types[1] || !final_types[2])
1518 return NULL;
1519 if (field == e_fsel)
1520 *final_types[0] = R_FSEL;
1521 else if (field == e_rsel)
1522 *final_types[0] = R_RSEL;
1523 else if (field == e_lsel)
1524 *final_types[0] = R_LSEL;
1525 *final_types[1] = R_COMP2;
1526 *final_types[2] = R_COMP2;
1527 *final_types[3] = R_COMP1;
1528 final_types[4] = final_type;
1529 if (format == 32)
1530 *final_types[4] = R_DATA_EXPR;
1531 else
1532 *final_types[4] = R_CODE_EXPR;
1533 final_types[5] = NULL;
1534 break;
1535 }
1536 else
1537 break;
1538
1539 case R_HPPA_NONE:
1540 case R_HPPA_ABS_CALL:
1541 /* Right now we can default all these. */
1542 break;
1543
1544 case R_HPPA_PCREL_CALL:
1545 {
1546 #ifndef NO_PCREL_MODES
1547 /* If we have short and long pcrel modes, then generate the proper
1548 mode selector, then the pcrel relocation. Redundant selectors
1549 will be eliminated as the relocs are sized and emitted. */
1550 size_t amt = sizeof (int);
1551
1552 final_types[0] = bfd_alloc (abfd, amt);
1553 if (!final_types[0])
1554 return NULL;
1555 if (format == 17)
1556 *final_types[0] = R_SHORT_PCREL_MODE;
1557 else
1558 *final_types[0] = R_LONG_PCREL_MODE;
1559 final_types[1] = final_type;
1560 final_types[2] = NULL;
1561 *final_type = base_type;
1562 #endif
1563 break;
1564 }
1565 }
1566 return final_types;
1567 }
1568
1569 /* Return the address of the correct entry in the PA SOM relocation
1570 howto table. */
1571
1572 static reloc_howto_type *
1573 som_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1574 bfd_reloc_code_real_type code)
1575 {
1576 if ((int) code < (int) R_NO_RELOCATION + 255)
1577 {
1578 BFD_ASSERT ((int) som_hppa_howto_table[(int) code].type == (int) code);
1579 return &som_hppa_howto_table[(int) code];
1580 }
1581
1582 return NULL;
1583 }
1584
1585 static reloc_howto_type *
1586 som_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1587 const char *r_name)
1588 {
1589 unsigned int i;
1590
1591 for (i = 0;
1592 i < sizeof (som_hppa_howto_table) / sizeof (som_hppa_howto_table[0]);
1593 i++)
1594 if (som_hppa_howto_table[i].name != NULL
1595 && strcasecmp (som_hppa_howto_table[i].name, r_name) == 0)
1596 return &som_hppa_howto_table[i];
1597
1598 return NULL;
1599 }
1600
1601 static void
1602 som_swap_clock_in (struct som_external_clock *src,
1603 struct som_clock *dst)
1604 {
1605 dst->secs = bfd_getb32 (src->secs);
1606 dst->nanosecs = bfd_getb32 (src->nanosecs);
1607 }
1608
1609 static void
1610 som_swap_clock_out (struct som_clock *src,
1611 struct som_external_clock *dst)
1612 {
1613 bfd_putb32 (src->secs, dst->secs);
1614 bfd_putb32 (src->nanosecs, dst->nanosecs);
1615 }
1616
1617 static void
1618 som_swap_header_in (struct som_external_header *src,
1619 struct som_header *dst)
1620 {
1621 dst->system_id = bfd_getb16 (src->system_id);
1622 dst->a_magic = bfd_getb16 (src->a_magic);
1623 dst->version_id = bfd_getb32 (src->version_id);
1624 som_swap_clock_in (&src->file_time, &dst->file_time);
1625 dst->entry_space = bfd_getb32 (src->entry_space);
1626 dst->entry_subspace = bfd_getb32 (src->entry_subspace);
1627 dst->entry_offset = bfd_getb32 (src->entry_offset);
1628 dst->aux_header_location = bfd_getb32 (src->aux_header_location);
1629 dst->aux_header_size = bfd_getb32 (src->aux_header_size);
1630 dst->som_length = bfd_getb32 (src->som_length);
1631 dst->presumed_dp = bfd_getb32 (src->presumed_dp);
1632 dst->space_location = bfd_getb32 (src->space_location);
1633 dst->space_total = bfd_getb32 (src->space_total);
1634 dst->subspace_location = bfd_getb32 (src->subspace_location);
1635 dst->subspace_total = bfd_getb32 (src->subspace_total);
1636 dst->loader_fixup_location = bfd_getb32 (src->loader_fixup_location);
1637 dst->loader_fixup_total = bfd_getb32 (src->loader_fixup_total);
1638 dst->space_strings_location = bfd_getb32 (src->space_strings_location);
1639 dst->space_strings_size = bfd_getb32 (src->space_strings_size);
1640 dst->init_array_location = bfd_getb32 (src->init_array_location);
1641 dst->init_array_total = bfd_getb32 (src->init_array_total);
1642 dst->compiler_location = bfd_getb32 (src->compiler_location);
1643 dst->compiler_total = bfd_getb32 (src->compiler_total);
1644 dst->symbol_location = bfd_getb32 (src->symbol_location);
1645 dst->symbol_total = bfd_getb32 (src->symbol_total);
1646 dst->fixup_request_location = bfd_getb32 (src->fixup_request_location);
1647 dst->fixup_request_total = bfd_getb32 (src->fixup_request_total);
1648 dst->symbol_strings_location = bfd_getb32 (src->symbol_strings_location);
1649 dst->symbol_strings_size = bfd_getb32 (src->symbol_strings_size);
1650 dst->unloadable_sp_location = bfd_getb32 (src->unloadable_sp_location);
1651 dst->unloadable_sp_size = bfd_getb32 (src->unloadable_sp_size);
1652 dst->checksum = bfd_getb32 (src->checksum);
1653 }
1654
1655 static void
1656 som_swap_header_out (struct som_header *src,
1657 struct som_external_header *dst)
1658 {
1659 bfd_putb16 (src->system_id, dst->system_id);
1660 bfd_putb16 (src->a_magic, dst->a_magic);
1661 bfd_putb32 (src->version_id, dst->version_id);
1662 som_swap_clock_out (&src->file_time, &dst->file_time);
1663 bfd_putb32 (src->entry_space, dst->entry_space);
1664 bfd_putb32 (src->entry_subspace, dst->entry_subspace);
1665 bfd_putb32 (src->entry_offset, dst->entry_offset);
1666 bfd_putb32 (src->aux_header_location, dst->aux_header_location);
1667 bfd_putb32 (src->aux_header_size, dst->aux_header_size);
1668 bfd_putb32 (src->som_length, dst->som_length);
1669 bfd_putb32 (src->presumed_dp, dst->presumed_dp);
1670 bfd_putb32 (src->space_location, dst->space_location);
1671 bfd_putb32 (src->space_total, dst->space_total);
1672 bfd_putb32 (src->subspace_location, dst->subspace_location);
1673 bfd_putb32 (src->subspace_total, dst->subspace_total);
1674 bfd_putb32 (src->loader_fixup_location, dst->loader_fixup_location);
1675 bfd_putb32 (src->loader_fixup_total, dst->loader_fixup_total);
1676 bfd_putb32 (src->space_strings_location, dst->space_strings_location);
1677 bfd_putb32 (src->space_strings_size, dst->space_strings_size);
1678 bfd_putb32 (src->init_array_location, dst->init_array_location);
1679 bfd_putb32 (src->init_array_total, dst->init_array_total);
1680 bfd_putb32 (src->compiler_location, dst->compiler_location);
1681 bfd_putb32 (src->compiler_total, dst->compiler_total);
1682 bfd_putb32 (src->symbol_location, dst->symbol_location);
1683 bfd_putb32 (src->symbol_total, dst->symbol_total);
1684 bfd_putb32 (src->fixup_request_location, dst->fixup_request_location);
1685 bfd_putb32 (src->fixup_request_total, dst->fixup_request_total);
1686 bfd_putb32 (src->symbol_strings_location, dst->symbol_strings_location);
1687 bfd_putb32 (src->symbol_strings_size, dst->symbol_strings_size);
1688 bfd_putb32 (src->unloadable_sp_location, dst->unloadable_sp_location);
1689 bfd_putb32 (src->unloadable_sp_size, dst->unloadable_sp_size);
1690 bfd_putb32 (src->checksum, dst->checksum);
1691 }
1692
1693 static void
1694 som_swap_space_dictionary_in (struct som_external_space_dictionary_record *src,
1695 struct som_space_dictionary_record *dst)
1696 {
1697 unsigned int flags;
1698
1699 dst->name = bfd_getb32 (src->name);
1700 flags = bfd_getb32 (src->flags);
1701 dst->is_loadable = (flags & SOM_SPACE_IS_LOADABLE) != 0;
1702 dst->is_defined = (flags & SOM_SPACE_IS_DEFINED) != 0;
1703 dst->is_private = (flags & SOM_SPACE_IS_PRIVATE) != 0;
1704 dst->has_intermediate_code = (flags & SOM_SPACE_HAS_INTERMEDIATE_CODE) != 0;
1705 dst->is_tspecific = (flags & SOM_SPACE_IS_TSPECIFIC) != 0;
1706 dst->reserved = 0;
1707 dst->sort_key = (flags >> SOM_SPACE_SORT_KEY_SH) & SOM_SPACE_SORT_KEY_MASK;
1708 dst->reserved2 = 0;
1709 dst->space_number = bfd_getb32 (src->space_number);
1710 dst->subspace_index = bfd_getb32 (src->subspace_index);
1711 dst->subspace_quantity = bfd_getb32 (src->subspace_quantity);
1712 dst->loader_fix_index = bfd_getb32 (src->loader_fix_index);
1713 dst->loader_fix_quantity = bfd_getb32 (src->loader_fix_quantity);
1714 dst->init_pointer_index = bfd_getb32 (src->init_pointer_index);
1715 dst->init_pointer_quantity = bfd_getb32 (src->init_pointer_quantity);
1716 }
1717
1718 static void
1719 som_swap_space_dictionary_out (struct som_space_dictionary_record *src,
1720 struct som_external_space_dictionary_record *dst)
1721 {
1722 unsigned int flags;
1723
1724 bfd_putb32 (src->name, dst->name);
1725
1726 flags = 0;
1727 if (src->is_loadable)
1728 flags |= SOM_SPACE_IS_LOADABLE;
1729 if (src->is_defined)
1730 flags |= SOM_SPACE_IS_DEFINED;
1731 if (src->is_private)
1732 flags |= SOM_SPACE_IS_PRIVATE;
1733 if (src->has_intermediate_code)
1734 flags |= SOM_SPACE_HAS_INTERMEDIATE_CODE;
1735 if (src->is_tspecific)
1736 flags |= SOM_SPACE_IS_TSPECIFIC;
1737 flags |= (src->sort_key & SOM_SPACE_SORT_KEY_MASK) << SOM_SPACE_SORT_KEY_SH;
1738 bfd_putb32 (flags, dst->flags);
1739 bfd_putb32 (src->space_number, dst->space_number);
1740 bfd_putb32 (src->subspace_index, dst->subspace_index);
1741 bfd_putb32 (src->subspace_quantity, dst->subspace_quantity);
1742 bfd_putb32 (src->loader_fix_index, dst->loader_fix_index);
1743 bfd_putb32 (src->loader_fix_quantity, dst->loader_fix_quantity);
1744 bfd_putb32 (src->init_pointer_index, dst->init_pointer_index);
1745 bfd_putb32 (src->init_pointer_quantity, dst->init_pointer_quantity);
1746 }
1747
1748 static void
1749 som_swap_subspace_dictionary_in
1750 (struct som_external_subspace_dictionary_record *src,
1751 struct som_subspace_dictionary_record *dst)
1752 {
1753 unsigned int flags;
1754 dst->space_index = bfd_getb32 (src->space_index);
1755 flags = bfd_getb32 (src->flags);
1756 dst->access_control_bits = (flags >> SOM_SUBSPACE_ACCESS_CONTROL_BITS_SH)
1757 & SOM_SUBSPACE_ACCESS_CONTROL_BITS_MASK;
1758 dst->memory_resident = (flags & SOM_SUBSPACE_MEMORY_RESIDENT) != 0;
1759 dst->dup_common = (flags & SOM_SUBSPACE_DUP_COMMON) != 0;
1760 dst->is_common = (flags & SOM_SUBSPACE_IS_COMMON) != 0;
1761 dst->is_loadable = (flags & SOM_SUBSPACE_IS_LOADABLE) != 0;
1762 dst->quadrant = (flags >> SOM_SUBSPACE_QUADRANT_SH)
1763 & SOM_SUBSPACE_QUADRANT_MASK;
1764 dst->initially_frozen = (flags & SOM_SUBSPACE_INITIALLY_FROZEN) != 0;
1765 dst->is_first = (flags & SOM_SUBSPACE_IS_FIRST) != 0;
1766 dst->code_only = (flags & SOM_SUBSPACE_CODE_ONLY) != 0;
1767 dst->sort_key = (flags >> SOM_SUBSPACE_SORT_KEY_SH)
1768 & SOM_SUBSPACE_SORT_KEY_MASK;
1769 dst->replicate_init = (flags & SOM_SUBSPACE_REPLICATE_INIT) != 0;
1770 dst->continuation = (flags & SOM_SUBSPACE_CONTINUATION) != 0;
1771 dst->is_tspecific = (flags & SOM_SUBSPACE_IS_TSPECIFIC) != 0;
1772 dst->is_comdat = (flags & SOM_SUBSPACE_IS_COMDAT) != 0;
1773 dst->reserved = 0;
1774 dst->file_loc_init_value = bfd_getb32 (src->file_loc_init_value);
1775 dst->initialization_length = bfd_getb32 (src->initialization_length);
1776 dst->subspace_start = bfd_getb32 (src->subspace_start);
1777 dst->subspace_length = bfd_getb32 (src->subspace_length);
1778 dst->alignment = bfd_getb32 (src->alignment);
1779 dst->name = bfd_getb32 (src->name);
1780 dst->fixup_request_index = bfd_getb32 (src->fixup_request_index);
1781 dst->fixup_request_quantity = bfd_getb32 (src->fixup_request_quantity);
1782 }
1783
1784 static void
1785 som_swap_subspace_dictionary_record_out
1786 (struct som_subspace_dictionary_record *src,
1787 struct som_external_subspace_dictionary_record *dst)
1788 {
1789 unsigned int flags;
1790
1791 bfd_putb32 (src->space_index, dst->space_index);
1792 flags = (src->access_control_bits & SOM_SUBSPACE_ACCESS_CONTROL_BITS_MASK)
1793 << SOM_SUBSPACE_ACCESS_CONTROL_BITS_SH;
1794 if (src->memory_resident)
1795 flags |= SOM_SUBSPACE_MEMORY_RESIDENT;
1796 if (src->dup_common)
1797 flags |= SOM_SUBSPACE_DUP_COMMON;
1798 if (src->is_common)
1799 flags |= SOM_SUBSPACE_IS_COMMON;
1800 if (src->is_loadable)
1801 flags |= SOM_SUBSPACE_IS_LOADABLE;
1802 flags |= (src->quadrant & SOM_SUBSPACE_QUADRANT_MASK)
1803 << SOM_SUBSPACE_QUADRANT_SH;
1804 if (src->initially_frozen)
1805 flags |= SOM_SUBSPACE_INITIALLY_FROZEN;
1806 if (src->is_first)
1807 flags |= SOM_SUBSPACE_IS_FIRST;
1808 if (src->code_only)
1809 flags |= SOM_SUBSPACE_CODE_ONLY;
1810 flags |= (src->sort_key & SOM_SUBSPACE_SORT_KEY_MASK)
1811 << SOM_SUBSPACE_SORT_KEY_SH;
1812 if (src->replicate_init)
1813 flags |= SOM_SUBSPACE_REPLICATE_INIT;
1814 if (src->continuation)
1815 flags |= SOM_SUBSPACE_CONTINUATION;
1816 if (src->is_tspecific)
1817 flags |= SOM_SUBSPACE_IS_TSPECIFIC;
1818 if (src->is_comdat)
1819 flags |= SOM_SUBSPACE_IS_COMDAT;
1820 bfd_putb32 (flags, dst->flags);
1821 bfd_putb32 (src->file_loc_init_value, dst->file_loc_init_value);
1822 bfd_putb32 (src->initialization_length, dst->initialization_length);
1823 bfd_putb32 (src->subspace_start, dst->subspace_start);
1824 bfd_putb32 (src->subspace_length, dst->subspace_length);
1825 bfd_putb32 (src->alignment, dst->alignment);
1826 bfd_putb32 (src->name, dst->name);
1827 bfd_putb32 (src->fixup_request_index, dst->fixup_request_index);
1828 bfd_putb32 (src->fixup_request_quantity, dst->fixup_request_quantity);
1829 }
1830
1831 static void
1832 som_swap_aux_id_in (struct som_external_aux_id *src,
1833 struct som_aux_id *dst)
1834 {
1835 unsigned int flags = bfd_getb32 (src->flags);
1836
1837 dst->mandatory = (flags & SOM_AUX_ID_MANDATORY) != 0;
1838 dst->copy = (flags & SOM_AUX_ID_COPY) != 0;
1839 dst->append = (flags & SOM_AUX_ID_APPEND) != 0;
1840 dst->ignore = (flags & SOM_AUX_ID_IGNORE) != 0;
1841 dst->type = (flags >> SOM_AUX_ID_TYPE_SH) & SOM_AUX_ID_TYPE_MASK;
1842 dst->length = bfd_getb32 (src->length);
1843 }
1844
1845 static void
1846 som_swap_aux_id_out (struct som_aux_id *src,
1847 struct som_external_aux_id *dst)
1848 {
1849 unsigned int flags = 0;
1850
1851 if (src->mandatory)
1852 flags |= SOM_AUX_ID_MANDATORY;
1853 if (src->copy)
1854 flags |= SOM_AUX_ID_COPY;
1855 if (src->append)
1856 flags |= SOM_AUX_ID_APPEND;
1857 if (src->ignore)
1858 flags |= SOM_AUX_ID_IGNORE;
1859 flags |= (src->type & SOM_AUX_ID_TYPE_MASK) << SOM_AUX_ID_TYPE_SH;
1860 bfd_putb32 (flags, dst->flags);
1861 bfd_putb32 (src->length, dst->length);
1862 }
1863
1864 static void
1865 som_swap_string_auxhdr_out (struct som_string_auxhdr *src,
1866 struct som_external_string_auxhdr *dst)
1867 {
1868 som_swap_aux_id_out (&src->header_id, &dst->header_id);
1869 bfd_putb32 (src->string_length, dst->string_length);
1870 }
1871
1872 static void
1873 som_swap_compilation_unit_out (struct som_compilation_unit *src,
1874 struct som_external_compilation_unit *dst)
1875 {
1876 bfd_putb32 (src->name.strx, dst->name);
1877 bfd_putb32 (src->language_name.strx, dst->language_name);
1878 bfd_putb32 (src->product_id.strx, dst->product_id);
1879 bfd_putb32 (src->version_id.strx, dst->version_id);
1880 bfd_putb32 (src->flags, dst->flags);
1881 som_swap_clock_out (&src->compile_time, &dst->compile_time);
1882 som_swap_clock_out (&src->source_time, &dst->source_time);
1883 }
1884
1885 static void
1886 som_swap_exec_auxhdr_in (struct som_external_exec_auxhdr *src,
1887 struct som_exec_auxhdr *dst)
1888 {
1889 som_swap_aux_id_in (&src->som_auxhdr, &dst->som_auxhdr);
1890 dst->exec_tsize = bfd_getb32 (src->exec_tsize);
1891 dst->exec_tmem = bfd_getb32 (src->exec_tmem);
1892 dst->exec_tfile = bfd_getb32 (src->exec_tfile);
1893 dst->exec_dsize = bfd_getb32 (src->exec_dsize);
1894 dst->exec_dmem = bfd_getb32 (src->exec_dmem);
1895 dst->exec_dfile = bfd_getb32 (src->exec_dfile);
1896 dst->exec_bsize = bfd_getb32 (src->exec_bsize);
1897 dst->exec_entry = bfd_getb32 (src->exec_entry);
1898 dst->exec_flags = bfd_getb32 (src->exec_flags);
1899 dst->exec_bfill = bfd_getb32 (src->exec_bfill);
1900 }
1901
1902 static void
1903 som_swap_exec_auxhdr_out (struct som_exec_auxhdr *src,
1904 struct som_external_exec_auxhdr *dst)
1905 {
1906 som_swap_aux_id_out (&src->som_auxhdr, &dst->som_auxhdr);
1907 bfd_putb32 (src->exec_tsize, dst->exec_tsize);
1908 bfd_putb32 (src->exec_tmem, dst->exec_tmem);
1909 bfd_putb32 (src->exec_tfile, dst->exec_tfile);
1910 bfd_putb32 (src->exec_dsize, dst->exec_dsize);
1911 bfd_putb32 (src->exec_dmem, dst->exec_dmem);
1912 bfd_putb32 (src->exec_dfile, dst->exec_dfile);
1913 bfd_putb32 (src->exec_bsize, dst->exec_bsize);
1914 bfd_putb32 (src->exec_entry, dst->exec_entry);
1915 bfd_putb32 (src->exec_flags, dst->exec_flags);
1916 bfd_putb32 (src->exec_bfill, dst->exec_bfill);
1917 }
1918
1919 static void
1920 som_swap_lst_header_in (struct som_external_lst_header *src,
1921 struct som_lst_header *dst)
1922 {
1923 dst->system_id = bfd_getb16 (src->system_id);
1924 dst->a_magic = bfd_getb16 (src->a_magic);
1925 dst->version_id = bfd_getb32 (src->version_id);
1926 som_swap_clock_in (&src->file_time, &dst->file_time);
1927 dst->hash_loc = bfd_getb32 (src->hash_loc);
1928 dst->hash_size = bfd_getb32 (src->hash_size);
1929 dst->module_count = bfd_getb32 (src->module_count);
1930 dst->module_limit = bfd_getb32 (src->module_limit);
1931 dst->dir_loc = bfd_getb32 (src->dir_loc);
1932 dst->export_loc = bfd_getb32 (src->export_loc);
1933 dst->export_count = bfd_getb32 (src->export_count);
1934 dst->import_loc = bfd_getb32 (src->import_loc);
1935 dst->aux_loc = bfd_getb32 (src->aux_loc);
1936 dst->aux_size = bfd_getb32 (src->aux_size);
1937 dst->string_loc = bfd_getb32 (src->string_loc);
1938 dst->string_size = bfd_getb32 (src->string_size);
1939 dst->free_list = bfd_getb32 (src->free_list);
1940 dst->file_end = bfd_getb32 (src->file_end);
1941 dst->checksum = bfd_getb32 (src->checksum);
1942 }
1943
1944 /* Perform some initialization for an object. Save results of this
1945 initialization in the BFD. */
1946
1947 static bfd_cleanup
1948 som_object_setup (bfd *abfd,
1949 struct som_header *file_hdrp,
1950 struct som_exec_auxhdr *aux_hdrp,
1951 unsigned long current_offset)
1952 {
1953 asection *section;
1954
1955 /* som_mkobject will set bfd_error if som_mkobject fails. */
1956 if (! som_mkobject (abfd))
1957 return NULL;
1958
1959 /* Set BFD flags based on what information is available in the SOM. */
1960 abfd->flags = BFD_NO_FLAGS;
1961 if (file_hdrp->symbol_total)
1962 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
1963
1964 switch (file_hdrp->a_magic)
1965 {
1966 case DEMAND_MAGIC:
1967 abfd->flags |= (D_PAGED | WP_TEXT | EXEC_P);
1968 break;
1969 case SHARE_MAGIC:
1970 abfd->flags |= (WP_TEXT | EXEC_P);
1971 break;
1972 case EXEC_MAGIC:
1973 abfd->flags |= (EXEC_P);
1974 break;
1975 case RELOC_MAGIC:
1976 abfd->flags |= HAS_RELOC;
1977 break;
1978 #ifdef SHL_MAGIC
1979 case SHL_MAGIC:
1980 #endif
1981 #ifdef DL_MAGIC
1982 case DL_MAGIC:
1983 #endif
1984 abfd->flags |= DYNAMIC;
1985 break;
1986
1987 default:
1988 break;
1989 }
1990
1991 /* Save the auxiliary header. */
1992 obj_som_exec_hdr (abfd) = aux_hdrp;
1993
1994 /* Allocate space to hold the saved exec header information. */
1995 obj_som_exec_data (abfd) = bfd_zalloc (abfd, (bfd_size_type) sizeof (struct som_exec_data));
1996 if (obj_som_exec_data (abfd) == NULL)
1997 return NULL;
1998
1999 /* The braindamaged OSF1 linker switched exec_flags and exec_entry!
2000
2001 We used to identify OSF1 binaries based on NEW_VERSION_ID, but
2002 apparently the latest HPUX linker is using NEW_VERSION_ID now.
2003
2004 It's about time, OSF has used the new id since at least 1992;
2005 HPUX didn't start till nearly 1995!.
2006
2007 The new approach examines the entry field for an executable. If
2008 it is not 4-byte aligned then it's not a proper code address and
2009 we guess it's really the executable flags. For a main program,
2010 we also consider zero to be indicative of a buggy linker, since
2011 that is not a valid entry point. The entry point for a shared
2012 library, however, can be zero so we do not consider that to be
2013 indicative of a buggy linker. */
2014 if (aux_hdrp)
2015 {
2016 int found = 0;
2017
2018 for (section = abfd->sections; section; section = section->next)
2019 {
2020 bfd_vma entry;
2021
2022 if ((section->flags & SEC_CODE) == 0)
2023 continue;
2024 entry = aux_hdrp->exec_entry + aux_hdrp->exec_tmem;
2025 if (entry >= section->vma
2026 && entry < section->vma + section->size)
2027 found = 1;
2028 }
2029 if ((aux_hdrp->exec_entry == 0 && !(abfd->flags & DYNAMIC))
2030 || (aux_hdrp->exec_entry & 0x3) != 0
2031 || ! found)
2032 {
2033 abfd->start_address = aux_hdrp->exec_flags;
2034 obj_som_exec_data (abfd)->exec_flags = aux_hdrp->exec_entry;
2035 }
2036 else
2037 {
2038 abfd->start_address = aux_hdrp->exec_entry + current_offset;
2039 obj_som_exec_data (abfd)->exec_flags = aux_hdrp->exec_flags;
2040 }
2041 }
2042
2043 obj_som_exec_data (abfd)->version_id = file_hdrp->version_id;
2044
2045 bfd_default_set_arch_mach (abfd, bfd_arch_hppa, pa10);
2046 abfd->symcount = file_hdrp->symbol_total;
2047
2048 /* Initialize the saved symbol table and string table to NULL.
2049 Save important offsets and sizes from the SOM header into
2050 the BFD. */
2051 obj_som_stringtab (abfd) = NULL;
2052 obj_som_symtab (abfd) = NULL;
2053 obj_som_sorted_syms (abfd) = NULL;
2054 obj_som_stringtab_size (abfd) = file_hdrp->symbol_strings_size;
2055 obj_som_sym_filepos (abfd) = file_hdrp->symbol_location + current_offset;
2056 obj_som_str_filepos (abfd) = (file_hdrp->symbol_strings_location
2057 + current_offset);
2058 obj_som_reloc_filepos (abfd) = (file_hdrp->fixup_request_location
2059 + current_offset);
2060 obj_som_exec_data (abfd)->system_id = file_hdrp->system_id;
2061
2062 return _bfd_no_cleanup;
2063 }
2064
2065 /* Convert all of the space and subspace info into BFD sections. Each space
2066 contains a number of subspaces, which in turn describe the mapping between
2067 regions of the exec file, and the address space that the program runs in.
2068 BFD sections which correspond to spaces will overlap the sections for the
2069 associated subspaces. */
2070
2071 static bool
2072 setup_sections (bfd *abfd,
2073 struct som_header *file_hdr,
2074 unsigned long current_offset)
2075 {
2076 char *space_strings = NULL;
2077 unsigned int space_index, i;
2078 unsigned int total_subspaces = 0;
2079 asection **subspace_sections = NULL;
2080 asection *section;
2081 size_t amt;
2082
2083 /* First, read in space names. */
2084 amt = file_hdr->space_strings_size;
2085 if (amt == (size_t) -1)
2086 {
2087 bfd_set_error (bfd_error_no_memory);
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 space_strings = (char *) _bfd_malloc_and_read (abfd, amt + 1, amt);
2094 if (space_strings == NULL)
2095 goto error_return;
2096 /* Make sure that the string table is NUL terminated. */
2097 space_strings[amt] = 0;
2098
2099 /* Loop over all of the space dictionaries, building up sections. */
2100 for (space_index = 0; space_index < file_hdr->space_total; space_index++)
2101 {
2102 struct som_space_dictionary_record space;
2103 struct som_external_space_dictionary_record ext_space;
2104 char *space_name;
2105 struct som_external_subspace_dictionary_record ext_subspace;
2106 struct som_subspace_dictionary_record subspace, save_subspace;
2107 unsigned int subspace_index;
2108 asection *space_asect;
2109 bfd_size_type space_size = 0;
2110 char *newname;
2111
2112 /* Read the space dictionary element. */
2113 if (bfd_seek (abfd,
2114 (current_offset + file_hdr->space_location
2115 + space_index * sizeof (ext_space)),
2116 SEEK_SET) != 0)
2117 goto error_return;
2118 amt = sizeof ext_space;
2119 if (bfd_bread (&ext_space, amt, abfd) != amt)
2120 goto error_return;
2121
2122 som_swap_space_dictionary_in (&ext_space, &space);
2123
2124 /* Setup the space name string. */
2125 if (space.name >= file_hdr->space_strings_size)
2126 goto error_return;
2127
2128 space_name = space.name + space_strings;
2129
2130 /* Make a section out of it. */
2131 amt = strlen (space_name) + 1;
2132 newname = bfd_alloc (abfd, amt);
2133 if (!newname)
2134 goto error_return;
2135 strcpy (newname, space_name);
2136
2137 space_asect = bfd_make_section_anyway (abfd, newname);
2138 if (!space_asect)
2139 goto error_return;
2140
2141 if (space.is_loadable == 0)
2142 space_asect->flags |= SEC_DEBUGGING;
2143
2144 /* Set up all the attributes for the space. */
2145 if (! bfd_som_set_section_attributes (space_asect, space.is_defined,
2146 space.is_private, space.sort_key,
2147 space.space_number))
2148 goto error_return;
2149
2150 /* If the space has no subspaces, then we're done. */
2151 if (space.subspace_quantity == 0)
2152 continue;
2153
2154 /* Now, read in the first subspace for this space. */
2155 if (bfd_seek (abfd,
2156 (current_offset + file_hdr->subspace_location
2157 + space.subspace_index * sizeof ext_subspace),
2158 SEEK_SET) != 0)
2159 goto error_return;
2160 amt = sizeof ext_subspace;
2161 if (bfd_bread (&ext_subspace, amt, abfd) != amt)
2162 goto error_return;
2163 /* Seek back to the start of the subspaces for loop below. */
2164 if (bfd_seek (abfd,
2165 (current_offset + file_hdr->subspace_location
2166 + space.subspace_index * sizeof ext_subspace),
2167 SEEK_SET) != 0)
2168 goto error_return;
2169
2170 som_swap_subspace_dictionary_in (&ext_subspace, &subspace);
2171
2172 /* Setup the start address and file loc from the first subspace
2173 record. */
2174 space_asect->vma = subspace.subspace_start;
2175 space_asect->filepos = subspace.file_loc_init_value + current_offset;
2176 space_asect->alignment_power = exact_log2 (subspace.alignment);
2177 if (space_asect->alignment_power == (unsigned) -1)
2178 goto error_return;
2179
2180 /* Initialize save_subspace so we can reliably determine if this
2181 loop placed any useful values into it. */
2182 memset (&save_subspace, 0, sizeof (save_subspace));
2183
2184 /* Loop over the rest of the subspaces, building up more sections. */
2185 for (subspace_index = 0; subspace_index < space.subspace_quantity;
2186 subspace_index++)
2187 {
2188 asection *subspace_asect;
2189 char *subspace_name;
2190
2191 /* Read in the next subspace. */
2192 amt = sizeof ext_subspace;
2193 if (bfd_bread (&ext_subspace, amt, abfd) != amt)
2194 goto error_return;
2195
2196 som_swap_subspace_dictionary_in (&ext_subspace, &subspace);
2197
2198 /* Setup the subspace name string. */
2199 if (subspace.name >= file_hdr->space_strings_size)
2200 goto error_return;
2201
2202 subspace_name = subspace.name + space_strings;
2203
2204 amt = strlen (subspace_name) + 1;
2205 newname = bfd_alloc (abfd, amt);
2206 if (!newname)
2207 goto error_return;
2208 strcpy (newname, subspace_name);
2209
2210 /* Make a section out of this subspace. */
2211 subspace_asect = bfd_make_section_anyway (abfd, newname);
2212 if (!subspace_asect)
2213 goto error_return;
2214
2215 /* Store private information about the section. */
2216 if (! bfd_som_set_subsection_attributes (subspace_asect, space_asect,
2217 subspace.access_control_bits,
2218 subspace.sort_key,
2219 subspace.quadrant,
2220 subspace.is_comdat,
2221 subspace.is_common,
2222 subspace.dup_common))
2223 goto error_return;
2224
2225 /* Keep an easy mapping between subspaces and sections.
2226 Note we do not necessarily read the subspaces in the
2227 same order in which they appear in the object file.
2228
2229 So to make the target index come out correctly, we
2230 store the location of the subspace header in target
2231 index, then sort using the location of the subspace
2232 header as the key. Then we can assign correct
2233 subspace indices. */
2234 total_subspaces++;
2235 subspace_asect->target_index = bfd_tell (abfd) - sizeof (subspace);
2236
2237 /* Set SEC_READONLY and SEC_CODE/SEC_DATA as specified
2238 by the access_control_bits in the subspace header. */
2239 switch (subspace.access_control_bits >> 4)
2240 {
2241 /* Readonly data. */
2242 case 0x0:
2243 subspace_asect->flags |= SEC_DATA | SEC_READONLY;
2244 break;
2245
2246 /* Normal data. */
2247 case 0x1:
2248 subspace_asect->flags |= SEC_DATA;
2249 break;
2250
2251 /* Readonly code and the gateways.
2252 Gateways have other attributes which do not map
2253 into anything BFD knows about. */
2254 case 0x2:
2255 case 0x4:
2256 case 0x5:
2257 case 0x6:
2258 case 0x7:
2259 subspace_asect->flags |= SEC_CODE | SEC_READONLY;
2260 break;
2261
2262 /* dynamic (writable) code. */
2263 case 0x3:
2264 subspace_asect->flags |= SEC_CODE;
2265 break;
2266 }
2267
2268 if (subspace.is_comdat || subspace.is_common || subspace.dup_common)
2269 subspace_asect->flags |= SEC_LINK_ONCE;
2270
2271 if (subspace.subspace_length > 0)
2272 subspace_asect->flags |= SEC_HAS_CONTENTS;
2273
2274 if (subspace.is_loadable)
2275 subspace_asect->flags |= SEC_ALLOC | SEC_LOAD;
2276 else
2277 subspace_asect->flags |= SEC_DEBUGGING;
2278
2279 if (subspace.code_only)
2280 subspace_asect->flags |= SEC_CODE;
2281
2282 /* Both file_loc_init_value and initialization_length will
2283 be zero for a BSS like subspace. */
2284 if (subspace.file_loc_init_value == 0
2285 && subspace.initialization_length == 0)
2286 subspace_asect->flags &= ~(SEC_DATA | SEC_LOAD | SEC_HAS_CONTENTS);
2287
2288 /* This subspace has relocations.
2289 The fixup_request_quantity is a byte count for the number of
2290 entries in the relocation stream; it is not the actual number
2291 of relocations in the subspace. */
2292 if (subspace.fixup_request_quantity != 0)
2293 {
2294 subspace_asect->flags |= SEC_RELOC;
2295 subspace_asect->rel_filepos = subspace.fixup_request_index;
2296 som_section_data (subspace_asect)->reloc_size
2297 = subspace.fixup_request_quantity;
2298 /* We can not determine this yet. When we read in the
2299 relocation table the correct value will be filled in. */
2300 subspace_asect->reloc_count = (unsigned) -1;
2301 }
2302
2303 /* Update save_subspace if appropriate. */
2304 if (subspace.file_loc_init_value > save_subspace.file_loc_init_value)
2305 save_subspace = subspace;
2306
2307 subspace_asect->vma = subspace.subspace_start;
2308 subspace_asect->size = subspace.subspace_length;
2309 subspace_asect->filepos = (subspace.file_loc_init_value
2310 + current_offset);
2311 subspace_asect->alignment_power = exact_log2 (subspace.alignment);
2312 if (subspace_asect->alignment_power == (unsigned) -1)
2313 goto error_return;
2314
2315 /* Keep track of the accumulated sizes of the sections. */
2316 space_size += subspace.subspace_length;
2317 }
2318
2319 /* This can happen for a .o which defines symbols in otherwise
2320 empty subspaces. */
2321 if (!save_subspace.file_loc_init_value)
2322 space_asect->size = 0;
2323 else
2324 {
2325 if (file_hdr->a_magic != RELOC_MAGIC)
2326 {
2327 /* Setup the size for the space section based upon the info
2328 in the last subspace of the space. */
2329 space_asect->size = (save_subspace.subspace_start
2330 - space_asect->vma
2331 + save_subspace.subspace_length);
2332 }
2333 else
2334 {
2335 /* The subspace_start field is not initialised in relocatable
2336 only objects, so it cannot be used for length calculations.
2337 Instead we use the space_size value which we have been
2338 accumulating. This isn't an accurate estimate since it
2339 ignores alignment and ordering issues. */
2340 space_asect->size = space_size;
2341 }
2342 }
2343 }
2344 /* Now that we've read in all the subspace records, we need to assign
2345 a target index to each subspace. */
2346 if (_bfd_mul_overflow (total_subspaces, sizeof (asection *), &amt))
2347 {
2348 bfd_set_error (bfd_error_file_too_big);
2349 goto error_return;
2350 }
2351 subspace_sections = bfd_malloc (amt);
2352 if (subspace_sections == NULL)
2353 goto error_return;
2354
2355 for (i = 0, section = abfd->sections; section; section = section->next)
2356 {
2357 if (!som_is_subspace (section))
2358 continue;
2359
2360 subspace_sections[i] = section;
2361 i++;
2362 }
2363 qsort (subspace_sections, total_subspaces,
2364 sizeof (asection *), compare_subspaces);
2365
2366 /* subspace_sections is now sorted in the order in which the subspaces
2367 appear in the object file. Assign an index to each one now. */
2368 for (i = 0; i < total_subspaces; i++)
2369 subspace_sections[i]->target_index = i;
2370
2371 free (space_strings);
2372 free (subspace_sections);
2373 return true;
2374
2375 error_return:
2376 free (space_strings);
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 bfd_cleanup
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 size_t 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 bool
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 bool
2544 som_prep_headers (bfd *abfd)
2545 {
2546 struct som_header *file_hdr;
2547 asection *section;
2548 size_t 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 bool
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 bool
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 bool
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
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
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
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
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 bool
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 size_t amt;
2805
2806 if (num_syms == 0)
2807 return true;
2808
2809 /* Most SOM relocations involving a symbol have a length which is
2810 dependent on the index of the symbol. So symbols which are
2811 used often in relocations should have a small index. */
2812
2813 /* First initialize the counters for each symbol. */
2814 for (i = 0; i < num_syms; i++)
2815 {
2816 /* Handle a section symbol; these have no pointers back to the
2817 SOM symbol info. So we just use the udata field to hold the
2818 relocation count. */
2819 if (som_symbol_data (syms[i]) == NULL
2820 || syms[i]->flags & BSF_SECTION_SYM)
2821 {
2822 syms[i]->flags |= BSF_SECTION_SYM;
2823 syms[i]->udata.i = 0;
2824 }
2825 else
2826 som_symbol_data (syms[i])->reloc_count = 0;
2827 }
2828
2829 /* Now that the counters are initialized, make a weighted count
2830 of how often a given symbol is used in a relocation. */
2831 for (section = abfd->sections; section != NULL; section = section->next)
2832 {
2833 int j;
2834
2835 /* Does this section have any relocations? */
2836 if ((int) section->reloc_count <= 0)
2837 continue;
2838
2839 /* Walk through each relocation for this section. */
2840 for (j = 1; j < (int) section->reloc_count; j++)
2841 {
2842 arelent *reloc = section->orelocation[j];
2843 int scale;
2844
2845 /* A relocation against a symbol in the *ABS* section really
2846 does not have a symbol. Likewise if the symbol isn't associated
2847 with any section. */
2848 if (reloc->sym_ptr_ptr == NULL
2849 || bfd_is_abs_section ((*reloc->sym_ptr_ptr)->section))
2850 continue;
2851
2852 /* Scaling to encourage symbols involved in R_DP_RELATIVE
2853 and R_CODE_ONE_SYMBOL relocations to come first. These
2854 two relocations have single byte versions if the symbol
2855 index is very small. */
2856 if (reloc->howto->type == R_DP_RELATIVE
2857 || reloc->howto->type == R_CODE_ONE_SYMBOL)
2858 scale = 2;
2859 else
2860 scale = 1;
2861
2862 /* Handle section symbols by storing the count in the udata
2863 field. It will not be used and the count is very important
2864 for these symbols. */
2865 if ((*reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
2866 {
2867 (*reloc->sym_ptr_ptr)->udata.i =
2868 (*reloc->sym_ptr_ptr)->udata.i + scale;
2869 continue;
2870 }
2871
2872 /* A normal symbol. Increment the count. */
2873 som_symbol_data (*reloc->sym_ptr_ptr)->reloc_count += scale;
2874 }
2875 }
2876
2877 /* Sort a copy of the symbol table, rather than the canonical
2878 output symbol table. */
2879 if (_bfd_mul_overflow (num_syms, sizeof (asymbol *), &amt))
2880 {
2881 bfd_set_error (bfd_error_no_memory);
2882 return false;
2883 }
2884 sorted_syms = bfd_zalloc (abfd, amt);
2885 if (sorted_syms == NULL)
2886 return false;
2887 memcpy (sorted_syms, syms, num_syms * sizeof (asymbol *));
2888 qsort (sorted_syms, num_syms, sizeof (asymbol *), compare_syms);
2889 obj_som_sorted_syms (abfd) = sorted_syms;
2890
2891 /* Compute the symbol indexes, they will be needed by the relocation
2892 code. */
2893 for (i = 0; i < num_syms; i++)
2894 {
2895 /* A section symbol. Again, there is no pointer to backend symbol
2896 information, so we reuse the udata field again. */
2897 if (sorted_syms[i]->flags & BSF_SECTION_SYM)
2898 sorted_syms[i]->udata.i = i;
2899 else
2900 som_symbol_data (sorted_syms[i])->index = i;
2901 }
2902 return true;
2903 }
2904
2905 static bool
2906 som_write_fixups (bfd *abfd,
2907 unsigned long current_offset,
2908 unsigned int *total_reloc_sizep)
2909 {
2910 unsigned int i, j;
2911 /* Chunk of memory that we can use as buffer space, then throw
2912 away. */
2913 unsigned char tmp_space[SOM_TMP_BUFSIZE];
2914 unsigned char *p;
2915 unsigned int total_reloc_size = 0;
2916 unsigned int subspace_reloc_size = 0;
2917 unsigned int num_spaces = obj_som_file_hdr (abfd)->space_total;
2918 asection *section = abfd->sections;
2919 size_t amt;
2920
2921 memset (tmp_space, 0, SOM_TMP_BUFSIZE);
2922 p = tmp_space;
2923
2924 /* All the fixups for a particular subspace are emitted in a single
2925 stream. All the subspaces for a particular space are emitted
2926 as a single stream.
2927
2928 So, to get all the locations correct one must iterate through all the
2929 spaces, for each space iterate through its subspaces and output a
2930 fixups stream. */
2931 for (i = 0; i < num_spaces; i++)
2932 {
2933 asection *subsection;
2934
2935 /* Find a space. */
2936 while (!som_is_space (section))
2937 section = section->next;
2938
2939 /* Now iterate through each of its subspaces. */
2940 for (subsection = abfd->sections;
2941 subsection != NULL;
2942 subsection = subsection->next)
2943 {
2944 int reloc_offset;
2945 unsigned int current_rounding_mode;
2946 #ifndef NO_PCREL_MODES
2947 unsigned int current_call_mode;
2948 #endif
2949
2950 /* Find a subspace of this space. */
2951 if (!som_is_subspace (subsection)
2952 || !som_is_container (section, subsection))
2953 continue;
2954
2955 /* If this subspace does not have real data, then we are
2956 finished with it. */
2957 if ((subsection->flags & SEC_HAS_CONTENTS) == 0)
2958 {
2959 som_section_data (subsection)->subspace_dict->fixup_request_index
2960 = -1;
2961 continue;
2962 }
2963
2964 /* This subspace has some relocations. Put the relocation stream
2965 index into the subspace record. */
2966 som_section_data (subsection)->subspace_dict->fixup_request_index
2967 = total_reloc_size;
2968
2969 /* To make life easier start over with a clean slate for
2970 each subspace. Seek to the start of the relocation stream
2971 for this subspace in preparation for writing out its fixup
2972 stream. */
2973 if (bfd_seek (abfd, current_offset + total_reloc_size, SEEK_SET) != 0)
2974 return false;
2975
2976 /* Buffer space has already been allocated. Just perform some
2977 initialization here. */
2978 p = tmp_space;
2979 subspace_reloc_size = 0;
2980 reloc_offset = 0;
2981 som_initialize_reloc_queue (reloc_queue);
2982 current_rounding_mode = R_N_MODE;
2983 #ifndef NO_PCREL_MODES
2984 current_call_mode = R_SHORT_PCREL_MODE;
2985 #endif
2986
2987 /* Translate each BFD relocation into one or more SOM
2988 relocations. */
2989 for (j = 0; j < subsection->reloc_count; j++)
2990 {
2991 arelent *bfd_reloc = subsection->orelocation[j];
2992 unsigned int skip;
2993 int sym_num;
2994
2995 /* Get the symbol number. Remember it's stored in a
2996 special place for section symbols. */
2997 if ((*bfd_reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
2998 sym_num = (*bfd_reloc->sym_ptr_ptr)->udata.i;
2999 else
3000 sym_num = som_symbol_data (*bfd_reloc->sym_ptr_ptr)->index;
3001
3002 /* If there is not enough room for the next couple relocations,
3003 then dump the current buffer contents now. Also reinitialize
3004 the relocation queue.
3005
3006 No single BFD relocation could ever translate into more
3007 than 100 bytes of SOM relocations (20bytes is probably the
3008 upper limit, but leave lots of space for growth). */
3009 if (p - tmp_space + 100 > SOM_TMP_BUFSIZE)
3010 {
3011 amt = p - tmp_space;
3012 if (bfd_bwrite ((void *) tmp_space, amt, abfd) != amt)
3013 return false;
3014
3015 p = tmp_space;
3016 som_initialize_reloc_queue (reloc_queue);
3017 }
3018
3019 /* Emit R_NO_RELOCATION fixups to map any bytes which were
3020 skipped. */
3021 skip = bfd_reloc->address - reloc_offset;
3022 p = som_reloc_skip (abfd, skip, p,
3023 &subspace_reloc_size, reloc_queue);
3024
3025 /* Update reloc_offset for the next iteration.
3026
3027 Many relocations do not consume input bytes. They
3028 are markers, or set state necessary to perform some
3029 later relocation. */
3030 switch (bfd_reloc->howto->type)
3031 {
3032 case R_ENTRY:
3033 case R_ALT_ENTRY:
3034 case R_EXIT:
3035 case R_N_MODE:
3036 case R_S_MODE:
3037 case R_D_MODE:
3038 case R_R_MODE:
3039 case R_FSEL:
3040 case R_LSEL:
3041 case R_RSEL:
3042 case R_COMP1:
3043 case R_COMP2:
3044 case R_BEGIN_BRTAB:
3045 case R_END_BRTAB:
3046 case R_BEGIN_TRY:
3047 case R_END_TRY:
3048 case R_N0SEL:
3049 case R_N1SEL:
3050 #ifndef NO_PCREL_MODES
3051 case R_SHORT_PCREL_MODE:
3052 case R_LONG_PCREL_MODE:
3053 #endif
3054 reloc_offset = bfd_reloc->address;
3055 break;
3056
3057 default:
3058 reloc_offset = bfd_reloc->address + 4;
3059 break;
3060 }
3061
3062 /* Now the actual relocation we care about. */
3063 switch (bfd_reloc->howto->type)
3064 {
3065 case R_PCREL_CALL:
3066 case R_ABS_CALL:
3067 p = som_reloc_call (abfd, p, &subspace_reloc_size,
3068 bfd_reloc, sym_num, reloc_queue);
3069 break;
3070
3071 case R_CODE_ONE_SYMBOL:
3072 case R_DP_RELATIVE:
3073 /* Account for any addend. */
3074 if (bfd_reloc->addend)
3075 p = som_reloc_addend (abfd, bfd_reloc->addend, p,
3076 &subspace_reloc_size, reloc_queue);
3077
3078 if (sym_num < 0x20)
3079 {
3080 bfd_put_8 (abfd, bfd_reloc->howto->type + sym_num, p);
3081 subspace_reloc_size += 1;
3082 p += 1;
3083 }
3084 else if (sym_num < 0x100)
3085 {
3086 bfd_put_8 (abfd, bfd_reloc->howto->type + 32, p);
3087 bfd_put_8 (abfd, sym_num, p + 1);
3088 p = try_prev_fixup (abfd, &subspace_reloc_size, p,
3089 2, reloc_queue);
3090 }
3091 else if (sym_num < 0x10000000)
3092 {
3093 bfd_put_8 (abfd, bfd_reloc->howto->type + 33, p);
3094 bfd_put_8 (abfd, sym_num >> 16, p + 1);
3095 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2);
3096 p = try_prev_fixup (abfd, &subspace_reloc_size,
3097 p, 4, reloc_queue);
3098 }
3099 else
3100 abort ();
3101 break;
3102
3103 case R_DATA_GPREL:
3104 /* Account for any addend. */
3105 if (bfd_reloc->addend)
3106 p = som_reloc_addend (abfd, bfd_reloc->addend, p,
3107 &subspace_reloc_size, reloc_queue);
3108
3109 if (sym_num < 0x10000000)
3110 {
3111 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3112 bfd_put_8 (abfd, sym_num >> 16, p + 1);
3113 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2);
3114 p = try_prev_fixup (abfd, &subspace_reloc_size,
3115 p, 4, reloc_queue);
3116 }
3117 else
3118 abort ();
3119 break;
3120
3121 case R_DATA_ONE_SYMBOL:
3122 case R_DATA_PLABEL:
3123 case R_CODE_PLABEL:
3124 case R_DLT_REL:
3125 /* Account for any addend using R_DATA_OVERRIDE. */
3126 if (bfd_reloc->howto->type != R_DATA_ONE_SYMBOL
3127 && bfd_reloc->addend)
3128 p = som_reloc_addend (abfd, bfd_reloc->addend, p,
3129 &subspace_reloc_size, reloc_queue);
3130
3131 if (sym_num < 0x100)
3132 {
3133 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3134 bfd_put_8 (abfd, sym_num, p + 1);
3135 p = try_prev_fixup (abfd, &subspace_reloc_size, p,
3136 2, reloc_queue);
3137 }
3138 else if (sym_num < 0x10000000)
3139 {
3140 bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p);
3141 bfd_put_8 (abfd, sym_num >> 16, p + 1);
3142 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2);
3143 p = try_prev_fixup (abfd, &subspace_reloc_size,
3144 p, 4, reloc_queue);
3145 }
3146 else
3147 abort ();
3148 break;
3149
3150 case R_ENTRY:
3151 {
3152 unsigned int tmp;
3153 arelent *tmp_reloc = NULL;
3154 bfd_put_8 (abfd, R_ENTRY, p);
3155
3156 /* R_ENTRY relocations have 64 bits of associated
3157 data. Unfortunately the addend field of a bfd
3158 relocation is only 32 bits. So, we split up
3159 the 64bit unwind information and store part in
3160 the R_ENTRY relocation, and the rest in the R_EXIT
3161 relocation. */
3162 bfd_put_32 (abfd, bfd_reloc->addend, p + 1);
3163
3164 /* Find the next R_EXIT relocation. */
3165 for (tmp = j; tmp < subsection->reloc_count; tmp++)
3166 {
3167 tmp_reloc = subsection->orelocation[tmp];
3168 if (tmp_reloc->howto->type == R_EXIT)
3169 break;
3170 }
3171
3172 if (tmp == subsection->reloc_count)
3173 abort ();
3174
3175 bfd_put_32 (abfd, tmp_reloc->addend, p + 5);
3176 p = try_prev_fixup (abfd, &subspace_reloc_size,
3177 p, 9, reloc_queue);
3178 break;
3179 }
3180
3181 case R_N_MODE:
3182 case R_S_MODE:
3183 case R_D_MODE:
3184 case R_R_MODE:
3185 /* If this relocation requests the current rounding
3186 mode, then it is redundant. */
3187 if (bfd_reloc->howto->type != current_rounding_mode)
3188 {
3189 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3190 subspace_reloc_size += 1;
3191 p += 1;
3192 current_rounding_mode = bfd_reloc->howto->type;
3193 }
3194 break;
3195
3196 #ifndef NO_PCREL_MODES
3197 case R_LONG_PCREL_MODE:
3198 case R_SHORT_PCREL_MODE:
3199 if (bfd_reloc->howto->type != current_call_mode)
3200 {
3201 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3202 subspace_reloc_size += 1;
3203 p += 1;
3204 current_call_mode = bfd_reloc->howto->type;
3205 }
3206 break;
3207 #endif
3208
3209 case R_EXIT:
3210 case R_ALT_ENTRY:
3211 case R_FSEL:
3212 case R_LSEL:
3213 case R_RSEL:
3214 case R_BEGIN_BRTAB:
3215 case R_END_BRTAB:
3216 case R_BEGIN_TRY:
3217 case R_N0SEL:
3218 case R_N1SEL:
3219 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3220 subspace_reloc_size += 1;
3221 p += 1;
3222 break;
3223
3224 case R_END_TRY:
3225 /* The end of an exception handling region. The reloc's
3226 addend contains the offset of the exception handling
3227 code. */
3228 if (bfd_reloc->addend == 0)
3229 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3230 else if (bfd_reloc->addend < 1024)
3231 {
3232 bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p);
3233 bfd_put_8 (abfd, bfd_reloc->addend / 4, p + 1);
3234 p = try_prev_fixup (abfd, &subspace_reloc_size,
3235 p, 2, reloc_queue);
3236 }
3237 else
3238 {
3239 bfd_put_8 (abfd, bfd_reloc->howto->type + 2, p);
3240 bfd_put_8 (abfd, (bfd_reloc->addend / 4) >> 16, p + 1);
3241 bfd_put_16 (abfd, bfd_reloc->addend / 4, p + 2);
3242 p = try_prev_fixup (abfd, &subspace_reloc_size,
3243 p, 4, reloc_queue);
3244 }
3245 break;
3246
3247 case R_COMP1:
3248 /* The only time we generate R_COMP1, R_COMP2 and
3249 R_CODE_EXPR relocs is for the difference of two
3250 symbols. Hence we can cheat here. */
3251 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3252 bfd_put_8 (abfd, 0x44, p + 1);
3253 p = try_prev_fixup (abfd, &subspace_reloc_size,
3254 p, 2, reloc_queue);
3255 break;
3256
3257 case R_COMP2:
3258 /* The only time we generate R_COMP1, R_COMP2 and
3259 R_CODE_EXPR relocs is for the difference of two
3260 symbols. Hence we can cheat here. */
3261 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3262 bfd_put_8 (abfd, 0x80, p + 1);
3263 bfd_put_8 (abfd, sym_num >> 16, p + 2);
3264 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 3);
3265 p = try_prev_fixup (abfd, &subspace_reloc_size,
3266 p, 5, reloc_queue);
3267 break;
3268
3269 case R_CODE_EXPR:
3270 case R_DATA_EXPR:
3271 /* The only time we generate R_COMP1, R_COMP2 and
3272 R_CODE_EXPR relocs is for the difference of two
3273 symbols. Hence we can cheat here. */
3274 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3275 subspace_reloc_size += 1;
3276 p += 1;
3277 break;
3278
3279 /* Put a "R_RESERVED" relocation in the stream if
3280 we hit something we do not understand. The linker
3281 will complain loudly if this ever happens. */
3282 default:
3283 bfd_put_8 (abfd, 0xff, p);
3284 subspace_reloc_size += 1;
3285 p += 1;
3286 break;
3287 }
3288 }
3289
3290 /* Last BFD relocation for a subspace has been processed.
3291 Map the rest of the subspace with R_NO_RELOCATION fixups. */
3292 p = som_reloc_skip (abfd, subsection->size - reloc_offset,
3293 p, &subspace_reloc_size, reloc_queue);
3294
3295 /* Scribble out the relocations. */
3296 amt = p - tmp_space;
3297 if (bfd_bwrite ((void *) tmp_space, amt, abfd) != amt)
3298 return false;
3299 p = tmp_space;
3300
3301 total_reloc_size += subspace_reloc_size;
3302 som_section_data (subsection)->subspace_dict->fixup_request_quantity
3303 = subspace_reloc_size;
3304 }
3305 section = section->next;
3306 }
3307 *total_reloc_sizep = total_reloc_size;
3308 return true;
3309 }
3310
3311 /* Write out the space/subspace string table. */
3312
3313 static bool
3314 som_write_space_strings (bfd *abfd,
3315 unsigned long current_offset,
3316 unsigned int *string_sizep)
3317 {
3318 /* Chunk of memory that we can use as buffer space, then throw
3319 away. */
3320 size_t tmp_space_size = SOM_TMP_BUFSIZE;
3321 char *tmp_space = bfd_malloc (tmp_space_size);
3322 char *p = tmp_space;
3323 unsigned int strings_size = 0;
3324 asection *section;
3325 size_t amt;
3326 bfd_size_type res;
3327
3328 if (tmp_space == NULL)
3329 return false;
3330
3331 /* Seek to the start of the space strings in preparation for writing
3332 them out. */
3333 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0)
3334 return false;
3335
3336 /* Walk through all the spaces and subspaces (order is not important)
3337 building up and writing string table entries for their names. */
3338 for (section = abfd->sections; section != NULL; section = section->next)
3339 {
3340 size_t length;
3341
3342 /* Only work with space/subspaces; avoid any other sections
3343 which might have been made (.text for example). */
3344 if (!som_is_space (section) && !som_is_subspace (section))
3345 continue;
3346
3347 /* Get the length of the space/subspace name. */
3348 length = strlen (section->name);
3349
3350 /* If there is not enough room for the next entry, then dump the
3351 current buffer contents now and maybe allocate a larger
3352 buffer. Each entry will take 4 bytes to hold the string
3353 length + the string itself + null terminator. */
3354 if (p - tmp_space + 5 + length > tmp_space_size)
3355 {
3356 /* Flush buffer before refilling or reallocating. */
3357 amt = p - tmp_space;
3358 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt)
3359 return false;
3360
3361 /* Reallocate if now empty buffer still too small. */
3362 if (5 + length > tmp_space_size)
3363 {
3364 /* Ensure a minimum growth factor to avoid O(n**2) space
3365 consumption for n strings. The optimal minimum
3366 factor seems to be 2, as no other value can guarantee
3367 wasting less than 50% space. (Note that we cannot
3368 deallocate space allocated by `alloca' without
3369 returning from this function.) The same technique is
3370 used a few more times below when a buffer is
3371 reallocated. */
3372 if (2 * tmp_space_size < length + 5)
3373 tmp_space_size = length + 5;
3374 else
3375 tmp_space_size = 2 * tmp_space_size;
3376 tmp_space = xrealloc (tmp_space, tmp_space_size);
3377 }
3378
3379 /* Reset to beginning of the (possibly new) buffer space. */
3380 p = tmp_space;
3381 }
3382
3383 /* First element in a string table entry is the length of the
3384 string. Alignment issues are already handled. */
3385 bfd_put_32 (abfd, (bfd_vma) length, p);
3386 p += 4;
3387 strings_size += 4;
3388
3389 /* Record the index in the space/subspace records. */
3390 if (som_is_space (section))
3391 som_section_data (section)->space_dict->name = strings_size;
3392 else
3393 som_section_data (section)->subspace_dict->name = strings_size;
3394
3395 /* Next comes the string itself + a null terminator. */
3396 strcpy (p, section->name);
3397 p += length + 1;
3398 strings_size += length + 1;
3399
3400 /* Always align up to the next word boundary. */
3401 while (strings_size % 4)
3402 {
3403 bfd_put_8 (abfd, 0, p);
3404 p++;
3405 strings_size++;
3406 }
3407 }
3408
3409 /* Done with the space/subspace strings. Write out any information
3410 contained in a partial block. */
3411 amt = p - tmp_space;
3412 res = bfd_bwrite ((void *) &tmp_space[0], amt, abfd);
3413 free (tmp_space);
3414 if (res != amt)
3415 return false;
3416 *string_sizep = strings_size;
3417 return true;
3418 }
3419
3420 /* Write out the symbol string table. */
3421
3422 static bool
3423 som_write_symbol_strings (bfd *abfd,
3424 unsigned long current_offset,
3425 asymbol **syms,
3426 unsigned int num_syms,
3427 unsigned int *string_sizep,
3428 struct som_compilation_unit *compilation_unit)
3429 {
3430 unsigned int i;
3431 /* Chunk of memory that we can use as buffer space, then throw
3432 away. */
3433 size_t tmp_space_size = SOM_TMP_BUFSIZE;
3434 char *tmp_space = bfd_malloc (tmp_space_size);
3435 char *p = tmp_space;
3436 unsigned int strings_size = 0;
3437 size_t amt;
3438 bfd_size_type res;
3439
3440 if (tmp_space == NULL)
3441 return false;
3442
3443 /* This gets a bit gruesome because of the compilation unit. The
3444 strings within the compilation unit are part of the symbol
3445 strings, but don't have symbol_dictionary entries. So, manually
3446 write them and update the compilation unit header. On input, the
3447 compilation unit header contains local copies of the strings.
3448 Move them aside. */
3449
3450 /* Seek to the start of the space strings in preparation for writing
3451 them out. */
3452 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0)
3453 return false;
3454
3455 if (compilation_unit)
3456 {
3457 for (i = 0; i < 4; i++)
3458 {
3459 struct som_name_pt *name;
3460 size_t length;
3461
3462 switch (i)
3463 {
3464 case 0:
3465 name = &compilation_unit->name;
3466 break;
3467 case 1:
3468 name = &compilation_unit->language_name;
3469 break;
3470 case 2:
3471 name = &compilation_unit->product_id;
3472 break;
3473 case 3:
3474 name = &compilation_unit->version_id;
3475 break;
3476 default:
3477 abort ();
3478 }
3479
3480 length = strlen (name->name);
3481
3482 /* If there is not enough room for the next entry, then dump
3483 the current buffer contents now and maybe allocate a
3484 larger buffer. */
3485 if (p - tmp_space + 5 + length > tmp_space_size)
3486 {
3487 /* Flush buffer before refilling or reallocating. */
3488 amt = p - tmp_space;
3489 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt)
3490 return false;
3491
3492 /* Reallocate if now empty buffer still too small. */
3493 if (5 + length > tmp_space_size)
3494 {
3495 /* See alloca above for discussion of new size. */
3496 if (2 * tmp_space_size < 5 + length)
3497 tmp_space_size = 5 + length;
3498 else
3499 tmp_space_size = 2 * tmp_space_size;
3500 tmp_space = xrealloc (tmp_space, tmp_space_size);
3501 }
3502
3503 /* Reset to beginning of the (possibly new) buffer
3504 space. */
3505 p = tmp_space;
3506 }
3507
3508 /* First element in a string table entry is the length of
3509 the string. This must always be 4 byte aligned. This is
3510 also an appropriate time to fill in the string index
3511 field in the symbol table entry. */
3512 bfd_put_32 (abfd, (bfd_vma) length, p);
3513 strings_size += 4;
3514 p += 4;
3515
3516 /* Next comes the string itself + a null terminator. */
3517 strcpy (p, name->name);
3518
3519 name->strx = strings_size;
3520
3521 p += length + 1;
3522 strings_size += length + 1;
3523
3524 /* Always align up to the next word boundary. */
3525 while (strings_size % 4)
3526 {
3527 bfd_put_8 (abfd, 0, p);
3528 strings_size++;
3529 p++;
3530 }
3531 }
3532 }
3533
3534 for (i = 0; i < num_syms; i++)
3535 {
3536 size_t length = strlen (syms[i]->name);
3537
3538 /* If there is not enough room for the next entry, then dump the
3539 current buffer contents now and maybe allocate a larger buffer. */
3540 if (p - tmp_space + 5 + length > tmp_space_size)
3541 {
3542 /* Flush buffer before refilling or reallocating. */
3543 amt = p - tmp_space;
3544 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt)
3545 return false;
3546
3547 /* Reallocate if now empty buffer still too small. */
3548 if (5 + length > tmp_space_size)
3549 {
3550 /* See alloca above for discussion of new size. */
3551 if (2 * tmp_space_size < 5 + length)
3552 tmp_space_size = 5 + length;
3553 else
3554 tmp_space_size = 2 * tmp_space_size;
3555 tmp_space = xrealloc (tmp_space, tmp_space_size);
3556 }
3557
3558 /* Reset to beginning of the (possibly new) buffer space. */
3559 p = tmp_space;
3560 }
3561
3562 /* First element in a string table entry is the length of the
3563 string. This must always be 4 byte aligned. This is also
3564 an appropriate time to fill in the string index field in the
3565 symbol table entry. */
3566 bfd_put_32 (abfd, (bfd_vma) length, p);
3567 strings_size += 4;
3568 p += 4;
3569
3570 /* Next comes the string itself + a null terminator. */
3571 strcpy (p, syms[i]->name);
3572
3573 som_symbol_data (syms[i])->stringtab_offset = strings_size;
3574 p += length + 1;
3575 strings_size += length + 1;
3576
3577 /* Always align up to the next word boundary. */
3578 while (strings_size % 4)
3579 {
3580 bfd_put_8 (abfd, 0, p);
3581 strings_size++;
3582 p++;
3583 }
3584 }
3585
3586 /* Scribble out any partial block. */
3587 amt = p - tmp_space;
3588 res = bfd_bwrite ((void *) &tmp_space[0], amt, abfd);
3589 free (tmp_space);
3590 if (res != amt)
3591 return false;
3592
3593 *string_sizep = strings_size;
3594 return true;
3595 }
3596
3597 /* Compute variable information to be placed in the SOM headers,
3598 space/subspace dictionaries, relocation streams, etc. Begin
3599 writing parts of the object file. */
3600
3601 static bool
3602 som_begin_writing (bfd *abfd)
3603 {
3604 unsigned long current_offset = 0;
3605 unsigned int strings_size = 0;
3606 unsigned long num_spaces, num_subspaces, i;
3607 asection *section;
3608 unsigned int total_subspaces = 0;
3609 struct som_exec_auxhdr *exec_header = NULL;
3610
3611 /* The file header will always be first in an object file,
3612 everything else can be in random locations. To keep things
3613 "simple" BFD will lay out the object file in the manner suggested
3614 by the PRO ABI for PA-RISC Systems. */
3615
3616 /* Before any output can really begin offsets for all the major
3617 portions of the object file must be computed. So, starting
3618 with the initial file header compute (and sometimes write)
3619 each portion of the object file. */
3620
3621 /* Make room for the file header, it's contents are not complete
3622 yet, so it can not be written at this time. */
3623 current_offset += sizeof (struct som_external_header);
3624
3625 /* Any auxiliary headers will follow the file header. Right now
3626 we support only the copyright and version headers. */
3627 obj_som_file_hdr (abfd)->aux_header_location = current_offset;
3628 obj_som_file_hdr (abfd)->aux_header_size = 0;
3629 if (abfd->flags & (EXEC_P | DYNAMIC))
3630 {
3631 /* Parts of the exec header will be filled in later, so
3632 delay writing the header itself. Fill in the defaults,
3633 and write it later. */
3634 current_offset += sizeof (struct som_external_exec_auxhdr);
3635 obj_som_file_hdr (abfd)->aux_header_size
3636 += sizeof (struct som_external_exec_auxhdr);
3637 exec_header = obj_som_exec_hdr (abfd);
3638 exec_header->som_auxhdr.type = EXEC_AUX_ID;
3639 exec_header->som_auxhdr.length = 40;
3640 }
3641 if (obj_som_version_hdr (abfd) != NULL)
3642 {
3643 struct som_external_string_auxhdr ext_string_auxhdr;
3644 bfd_size_type len;
3645
3646 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0)
3647 return false;
3648
3649 /* Write the aux_id structure and the string length. */
3650 len = sizeof (struct som_external_string_auxhdr);
3651 obj_som_file_hdr (abfd)->aux_header_size += len;
3652 current_offset += len;
3653 som_swap_string_auxhdr_out
3654 (obj_som_version_hdr (abfd), &ext_string_auxhdr);
3655 if (bfd_bwrite (&ext_string_auxhdr, len, abfd) != len)
3656 return false;
3657
3658 /* Write the version string. */
3659 len = obj_som_version_hdr (abfd)->header_id.length - 4;
3660 obj_som_file_hdr (abfd)->aux_header_size += len;
3661 current_offset += len;
3662 if (bfd_bwrite ((void *) obj_som_version_hdr (abfd)->string, len, abfd)
3663 != len)
3664 return false;
3665 }
3666
3667 if (obj_som_copyright_hdr (abfd) != NULL)
3668 {
3669 struct som_external_string_auxhdr ext_string_auxhdr;
3670 bfd_size_type len;
3671
3672 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0)
3673 return false;
3674
3675 /* Write the aux_id structure and the string length. */
3676 len = sizeof (struct som_external_string_auxhdr);
3677 obj_som_file_hdr (abfd)->aux_header_size += len;
3678 current_offset += len;
3679 som_swap_string_auxhdr_out
3680 (obj_som_copyright_hdr (abfd), &ext_string_auxhdr);
3681 if (bfd_bwrite (&ext_string_auxhdr, len, abfd) != len)
3682 return false;
3683
3684 /* Write the copyright string. */
3685 len = obj_som_copyright_hdr (abfd)->header_id.length - 4;
3686 obj_som_file_hdr (abfd)->aux_header_size += len;
3687 current_offset += len;
3688 if (bfd_bwrite ((void *) obj_som_copyright_hdr (abfd)->string, len, abfd)
3689 != len)
3690 return false;
3691 }
3692
3693 /* Next comes the initialization pointers; we have no initialization
3694 pointers, so current offset does not change. */
3695 obj_som_file_hdr (abfd)->init_array_location = current_offset;
3696 obj_som_file_hdr (abfd)->init_array_total = 0;
3697
3698 /* Next are the space records. These are fixed length records.
3699
3700 Count the number of spaces to determine how much room is needed
3701 in the object file for the space records.
3702
3703 The names of the spaces are stored in a separate string table,
3704 and the index for each space into the string table is computed
3705 below. Therefore, it is not possible to write the space headers
3706 at this time. */
3707 num_spaces = som_count_spaces (abfd);
3708 obj_som_file_hdr (abfd)->space_location = current_offset;
3709 obj_som_file_hdr (abfd)->space_total = num_spaces;
3710 current_offset +=
3711 num_spaces * sizeof (struct som_external_space_dictionary_record);
3712
3713 /* Next are the subspace records. These are fixed length records.
3714
3715 Count the number of subspaes to determine how much room is needed
3716 in the object file for the subspace records.
3717
3718 A variety if fields in the subspace record are still unknown at
3719 this time (index into string table, fixup stream location/size, etc). */
3720 num_subspaces = som_count_subspaces (abfd);
3721 obj_som_file_hdr (abfd)->subspace_location = current_offset;
3722 obj_som_file_hdr (abfd)->subspace_total = num_subspaces;
3723 current_offset
3724 += num_subspaces * sizeof (struct som_external_subspace_dictionary_record);
3725
3726 /* Next is the string table for the space/subspace names. We will
3727 build and write the string table on the fly. At the same time
3728 we will fill in the space/subspace name index fields. */
3729
3730 /* The string table needs to be aligned on a word boundary. */
3731 if (current_offset % 4)
3732 current_offset += (4 - (current_offset % 4));
3733
3734 /* Mark the offset of the space/subspace string table in the
3735 file header. */
3736 obj_som_file_hdr (abfd)->space_strings_location = current_offset;
3737
3738 /* Scribble out the space strings. */
3739 if (! som_write_space_strings (abfd, current_offset, &strings_size))
3740 return false;
3741
3742 /* Record total string table size in the header and update the
3743 current offset. */
3744 obj_som_file_hdr (abfd)->space_strings_size = strings_size;
3745 current_offset += strings_size;
3746
3747 /* Next is the compilation unit. */
3748 obj_som_file_hdr (abfd)->compiler_location = current_offset;
3749 obj_som_file_hdr (abfd)->compiler_total = 0;
3750 if (obj_som_compilation_unit (abfd))
3751 {
3752 obj_som_file_hdr (abfd)->compiler_total = 1;
3753 current_offset += sizeof (struct som_external_compilation_unit);
3754 }
3755
3756 /* Now compute the file positions for the loadable subspaces, taking
3757 care to make sure everything stays properly aligned. */
3758
3759 section = abfd->sections;
3760 for (i = 0; i < num_spaces; i++)
3761 {
3762 asection *subsection;
3763 int first_subspace;
3764 unsigned int subspace_offset = 0;
3765
3766 /* Find a space. */
3767 while (!som_is_space (section))
3768 section = section->next;
3769
3770 first_subspace = 1;
3771 /* Now look for all its subspaces. */
3772 for (subsection = abfd->sections;
3773 subsection != NULL;
3774 subsection = subsection->next)
3775 {
3776
3777 if (!som_is_subspace (subsection)
3778 || !som_is_container (section, subsection)
3779 || (subsection->flags & SEC_ALLOC) == 0)
3780 continue;
3781
3782 /* If this is the first subspace in the space, and we are
3783 building an executable, then take care to make sure all
3784 the alignments are correct and update the exec header. */
3785 if (first_subspace
3786 && (abfd->flags & (EXEC_P | DYNAMIC)))
3787 {
3788 /* Demand paged executables have each space aligned to a
3789 page boundary. Sharable executables (write-protected
3790 text) have just the private (aka data & bss) space aligned
3791 to a page boundary. Ugh. Not true for HPUX.
3792
3793 The HPUX kernel requires the text to always be page aligned
3794 within the file regardless of the executable's type. */
3795 if (abfd->flags & (D_PAGED | DYNAMIC)
3796 || (subsection->flags & SEC_CODE)
3797 || ((abfd->flags & WP_TEXT)
3798 && (subsection->flags & SEC_DATA)))
3799 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE);
3800
3801 /* Update the exec header. */
3802 if (subsection->flags & SEC_CODE && exec_header->exec_tfile == 0)
3803 {
3804 exec_header->exec_tmem = section->vma;
3805 exec_header->exec_tfile = current_offset;
3806 }
3807 if (subsection->flags & SEC_DATA && exec_header->exec_dfile == 0)
3808 {
3809 exec_header->exec_dmem = section->vma;
3810 exec_header->exec_dfile = current_offset;
3811 }
3812
3813 /* Keep track of exactly where we are within a particular
3814 space. This is necessary as the braindamaged HPUX
3815 loader will create holes between subspaces *and*
3816 subspace alignments are *NOT* preserved. What a crock. */
3817 subspace_offset = subsection->vma;
3818
3819 /* Only do this for the first subspace within each space. */
3820 first_subspace = 0;
3821 }
3822 else if (abfd->flags & (EXEC_P | DYNAMIC))
3823 {
3824 /* The braindamaged HPUX loader may have created a hole
3825 between two subspaces. It is *not* sufficient to use
3826 the alignment specifications within the subspaces to
3827 account for these holes -- I've run into at least one
3828 case where the loader left one code subspace unaligned
3829 in a final executable.
3830
3831 To combat this we keep a current offset within each space,
3832 and use the subspace vma fields to detect and preserve
3833 holes. What a crock!
3834
3835 ps. This is not necessary for unloadable space/subspaces. */
3836 current_offset += subsection->vma - subspace_offset;
3837 if (subsection->flags & SEC_CODE)
3838 exec_header->exec_tsize += subsection->vma - subspace_offset;
3839 else
3840 exec_header->exec_dsize += subsection->vma - subspace_offset;
3841 subspace_offset += subsection->vma - subspace_offset;
3842 }
3843
3844 subsection->target_index = total_subspaces++;
3845 /* This is real data to be loaded from the file. */
3846 if (subsection->flags & SEC_LOAD)
3847 {
3848 /* Update the size of the code & data. */
3849 if (abfd->flags & (EXEC_P | DYNAMIC)
3850 && subsection->flags & SEC_CODE)
3851 exec_header->exec_tsize += subsection->size;
3852 else if (abfd->flags & (EXEC_P | DYNAMIC)
3853 && subsection->flags & SEC_DATA)
3854 exec_header->exec_dsize += subsection->size;
3855 som_section_data (subsection)->subspace_dict->file_loc_init_value
3856 = current_offset;
3857 subsection->filepos = current_offset;
3858 current_offset += subsection->size;
3859 subspace_offset += subsection->size;
3860 }
3861 /* Looks like uninitialized data. */
3862 else
3863 {
3864 /* Update the size of the bss section. */
3865 if (abfd->flags & (EXEC_P | DYNAMIC))
3866 exec_header->exec_bsize += subsection->size;
3867
3868 som_section_data (subsection)->subspace_dict->file_loc_init_value
3869 = 0;
3870 som_section_data (subsection)->subspace_dict->
3871 initialization_length = 0;
3872 }
3873 }
3874 /* Goto the next section. */
3875 section = section->next;
3876 }
3877
3878 /* Finally compute the file positions for unloadable subspaces.
3879 If building an executable, start the unloadable stuff on its
3880 own page. */
3881
3882 if (abfd->flags & (EXEC_P | DYNAMIC))
3883 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE);
3884
3885 obj_som_file_hdr (abfd)->unloadable_sp_location = current_offset;
3886 section = abfd->sections;
3887 for (i = 0; i < num_spaces; i++)
3888 {
3889 asection *subsection;
3890
3891 /* Find a space. */
3892 while (!som_is_space (section))
3893 section = section->next;
3894
3895 if (abfd->flags & (EXEC_P | DYNAMIC))
3896 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE);
3897
3898 /* Now look for all its subspaces. */
3899 for (subsection = abfd->sections;
3900 subsection != NULL;
3901 subsection = subsection->next)
3902 {
3903
3904 if (!som_is_subspace (subsection)
3905 || !som_is_container (section, subsection)
3906 || (subsection->flags & SEC_ALLOC) != 0)
3907 continue;
3908
3909 subsection->target_index = total_subspaces++;
3910 /* This is real data to be loaded from the file. */
3911 if ((subsection->flags & SEC_LOAD) == 0)
3912 {
3913 som_section_data (subsection)->subspace_dict->file_loc_init_value
3914 = current_offset;
3915 subsection->filepos = current_offset;
3916 current_offset += subsection->size;
3917 }
3918 /* Looks like uninitialized data. */
3919 else
3920 {
3921 som_section_data (subsection)->subspace_dict->file_loc_init_value
3922 = 0;
3923 som_section_data (subsection)->subspace_dict->
3924 initialization_length = subsection->size;
3925 }
3926 }
3927 /* Goto the next section. */
3928 section = section->next;
3929 }
3930
3931 /* If building an executable, then make sure to seek to and write
3932 one byte at the end of the file to make sure any necessary
3933 zeros are filled in. Ugh. */
3934 if (abfd->flags & (EXEC_P | DYNAMIC))
3935 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE);
3936 if (bfd_seek (abfd, (file_ptr) current_offset - 1, SEEK_SET) != 0)
3937 return false;
3938 if (bfd_bwrite ((void *) "", (bfd_size_type) 1, abfd) != 1)
3939 return false;
3940
3941 obj_som_file_hdr (abfd)->unloadable_sp_size
3942 = current_offset - obj_som_file_hdr (abfd)->unloadable_sp_location;
3943
3944 /* Loader fixups are not supported in any way shape or form. */
3945 obj_som_file_hdr (abfd)->loader_fixup_location = 0;
3946 obj_som_file_hdr (abfd)->loader_fixup_total = 0;
3947
3948 /* Done. Store the total size of the SOM so far. */
3949 obj_som_file_hdr (abfd)->som_length = current_offset;
3950
3951 return true;
3952 }
3953
3954 /* Finally, scribble out the various headers to the disk. */
3955
3956 static bool
3957 som_finish_writing (bfd *abfd)
3958 {
3959 int num_spaces = som_count_spaces (abfd);
3960 asymbol **syms = bfd_get_outsymbols (abfd);
3961 int i, num_syms;
3962 int subspace_index = 0;
3963 file_ptr location;
3964 asection *section;
3965 unsigned long current_offset;
3966 unsigned int strings_size, total_reloc_size;
3967 size_t amt;
3968 struct som_external_header ext_header;
3969
3970 /* We must set up the version identifier here as objcopy/strip copy
3971 private BFD data too late for us to handle this in som_begin_writing. */
3972 if (obj_som_exec_data (abfd)
3973 && obj_som_exec_data (abfd)->version_id)
3974 obj_som_file_hdr (abfd)->version_id = obj_som_exec_data (abfd)->version_id;
3975 else
3976 obj_som_file_hdr (abfd)->version_id = NEW_VERSION_ID;
3977
3978 /* Next is the symbol table. These are fixed length records.
3979
3980 Count the number of symbols to determine how much room is needed
3981 in the object file for the symbol table.
3982
3983 The names of the symbols are stored in a separate string table,
3984 and the index for each symbol name into the string table is computed
3985 below. Therefore, it is not possible to write the symbol table
3986 at this time.
3987
3988 These used to be output before the subspace contents, but they
3989 were moved here to work around a stupid bug in the hpux linker
3990 (fixed in hpux10). */
3991 current_offset = obj_som_file_hdr (abfd)->som_length;
3992
3993 /* Make sure we're on a word boundary. */
3994 if (current_offset % 4)
3995 current_offset += (4 - (current_offset % 4));
3996
3997 num_syms = bfd_get_symcount (abfd);
3998 obj_som_file_hdr (abfd)->symbol_location = current_offset;
3999 obj_som_file_hdr (abfd)->symbol_total = num_syms;
4000 current_offset +=
4001 num_syms * sizeof (struct som_external_symbol_dictionary_record);
4002
4003 /* Next are the symbol strings.
4004 Align them to a word boundary. */
4005 if (current_offset % 4)
4006 current_offset += (4 - (current_offset % 4));
4007 obj_som_file_hdr (abfd)->symbol_strings_location = current_offset;
4008
4009 /* Scribble out the symbol strings. */
4010 if (! som_write_symbol_strings (abfd, current_offset, syms,
4011 num_syms, &strings_size,
4012 obj_som_compilation_unit (abfd)))
4013 return false;
4014
4015 /* Record total string table size in header and update the
4016 current offset. */
4017 obj_som_file_hdr (abfd)->symbol_strings_size = strings_size;
4018 current_offset += strings_size;
4019
4020 /* Do prep work before handling fixups. */
4021 if (!som_prep_for_fixups (abfd,
4022 bfd_get_outsymbols (abfd),
4023 bfd_get_symcount (abfd)))
4024 return false;
4025
4026 /* At the end of the file is the fixup stream which starts on a
4027 word boundary. */
4028 if (current_offset % 4)
4029 current_offset += (4 - (current_offset % 4));
4030 obj_som_file_hdr (abfd)->fixup_request_location = current_offset;
4031
4032 /* Write the fixups and update fields in subspace headers which
4033 relate to the fixup stream. */
4034 if (! som_write_fixups (abfd, current_offset, &total_reloc_size))
4035 return false;
4036
4037 /* Record the total size of the fixup stream in the file header. */
4038 obj_som_file_hdr (abfd)->fixup_request_total = total_reloc_size;
4039
4040 /* Done. Store the total size of the SOM. */
4041 obj_som_file_hdr (abfd)->som_length = current_offset + total_reloc_size;
4042
4043 /* Now that the symbol table information is complete, build and
4044 write the symbol table. */
4045 if (! som_build_and_write_symbol_table (abfd))
4046 return false;
4047
4048 /* Subspaces are written first so that we can set up information
4049 about them in their containing spaces as the subspace is written. */
4050
4051 /* Seek to the start of the subspace dictionary records. */
4052 location = obj_som_file_hdr (abfd)->subspace_location;
4053 if (bfd_seek (abfd, location, SEEK_SET) != 0)
4054 return false;
4055
4056 section = abfd->sections;
4057 /* Now for each loadable space write out records for its subspaces. */
4058 for (i = 0; i < num_spaces; i++)
4059 {
4060 asection *subsection;
4061
4062 /* Find a space. */
4063 while (!som_is_space (section))
4064 section = section->next;
4065
4066 /* Now look for all its subspaces. */
4067 for (subsection = abfd->sections;
4068 subsection != NULL;
4069 subsection = subsection->next)
4070 {
4071 struct som_external_subspace_dictionary_record ext_subspace_dict;
4072
4073 /* Skip any section which does not correspond to a space
4074 or subspace. Or does not have SEC_ALLOC set (and therefore
4075 has no real bits on the disk). */
4076 if (!som_is_subspace (subsection)
4077 || !som_is_container (section, subsection)
4078 || (subsection->flags & SEC_ALLOC) == 0)
4079 continue;
4080
4081 /* If this is the first subspace for this space, then save
4082 the index of the subspace in its containing space. Also
4083 set "is_loadable" in the containing space. */
4084
4085 if (som_section_data (section)->space_dict->subspace_quantity == 0)
4086 {
4087 som_section_data (section)->space_dict->is_loadable = 1;
4088 som_section_data (section)->space_dict->subspace_index
4089 = subspace_index;
4090 }
4091
4092 /* Increment the number of subspaces seen and the number of
4093 subspaces contained within the current space. */
4094 subspace_index++;
4095 som_section_data (section)->space_dict->subspace_quantity++;
4096
4097 /* Mark the index of the current space within the subspace's
4098 dictionary record. */
4099 som_section_data (subsection)->subspace_dict->space_index = i;
4100
4101 /* Dump the current subspace header. */
4102 som_swap_subspace_dictionary_record_out
4103 (som_section_data (subsection)->subspace_dict, &ext_subspace_dict);
4104 amt = sizeof (struct som_subspace_dictionary_record);
4105 if (bfd_bwrite (&ext_subspace_dict, amt, abfd) != amt)
4106 return false;
4107 }
4108 /* Goto the next section. */
4109 section = section->next;
4110 }
4111
4112 /* Now repeat the process for unloadable subspaces. */
4113 section = abfd->sections;
4114 /* Now for each space write out records for its subspaces. */
4115 for (i = 0; i < num_spaces; i++)
4116 {
4117 asection *subsection;
4118
4119 /* Find a space. */
4120 while (!som_is_space (section))
4121 section = section->next;
4122
4123 /* Now look for all its subspaces. */
4124 for (subsection = abfd->sections;
4125 subsection != NULL;
4126 subsection = subsection->next)
4127 {
4128 struct som_external_subspace_dictionary_record ext_subspace_dict;
4129
4130 /* Skip any section which does not correspond to a space or
4131 subspace, or which SEC_ALLOC set (and therefore handled
4132 in the loadable spaces/subspaces code above). */
4133
4134 if (!som_is_subspace (subsection)
4135 || !som_is_container (section, subsection)
4136 || (subsection->flags & SEC_ALLOC) != 0)
4137 continue;
4138
4139 /* If this is the first subspace for this space, then save
4140 the index of the subspace in its containing space. Clear
4141 "is_loadable". */
4142
4143 if (som_section_data (section)->space_dict->subspace_quantity == 0)
4144 {
4145 som_section_data (section)->space_dict->is_loadable = 0;
4146 som_section_data (section)->space_dict->subspace_index
4147 = subspace_index;
4148 }
4149
4150 /* Increment the number of subspaces seen and the number of
4151 subspaces contained within the current space. */
4152 som_section_data (section)->space_dict->subspace_quantity++;
4153 subspace_index++;
4154
4155 /* Mark the index of the current space within the subspace's
4156 dictionary record. */
4157 som_section_data (subsection)->subspace_dict->space_index = i;
4158
4159 /* Dump this subspace header. */
4160 som_swap_subspace_dictionary_record_out
4161 (som_section_data (subsection)->subspace_dict, &ext_subspace_dict);
4162 amt = sizeof (struct som_subspace_dictionary_record);
4163 if (bfd_bwrite (&ext_subspace_dict, amt, abfd) != amt)
4164 return false;
4165 }
4166 /* Goto the next section. */
4167 section = section->next;
4168 }
4169
4170 /* All the subspace dictionary records are written, and all the
4171 fields are set up in the space dictionary records.
4172
4173 Seek to the right location and start writing the space
4174 dictionary records. */
4175 location = obj_som_file_hdr (abfd)->space_location;
4176 if (bfd_seek (abfd, location, SEEK_SET) != 0)
4177 return false;
4178
4179 section = abfd->sections;
4180 for (i = 0; i < num_spaces; i++)
4181 {
4182 struct som_external_space_dictionary_record ext_space_dict;
4183
4184 /* Find a space. */
4185 while (!som_is_space (section))
4186 section = section->next;
4187
4188 /* Dump its header. */
4189 som_swap_space_dictionary_out (som_section_data (section)->space_dict,
4190 &ext_space_dict);
4191 amt = sizeof (struct som_external_space_dictionary_record);
4192 if (bfd_bwrite (&ext_space_dict, amt, abfd) != amt)
4193 return false;
4194
4195 /* Goto the next section. */
4196 section = section->next;
4197 }
4198
4199 /* Write the compilation unit record if there is one. */
4200 if (obj_som_compilation_unit (abfd))
4201 {
4202 struct som_external_compilation_unit ext_comp_unit;
4203
4204 location = obj_som_file_hdr (abfd)->compiler_location;
4205 if (bfd_seek (abfd, location, SEEK_SET) != 0)
4206 return false;
4207
4208 som_swap_compilation_unit_out
4209 (obj_som_compilation_unit (abfd), &ext_comp_unit);
4210
4211 amt = sizeof (struct som_external_compilation_unit);
4212 if (bfd_bwrite (&ext_comp_unit, amt, abfd) != amt)
4213 return false;
4214 }
4215
4216 /* Setting of the system_id has to happen very late now that copying of
4217 BFD private data happens *after* section contents are set. */
4218 if (abfd->flags & (EXEC_P | DYNAMIC))
4219 obj_som_file_hdr (abfd)->system_id = obj_som_exec_data (abfd)->system_id;
4220 else if (bfd_get_mach (abfd) == pa20)
4221 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC2_0;
4222 else if (bfd_get_mach (abfd) == pa11)
4223 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC1_1;
4224 else
4225 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC1_0;
4226
4227 /* Swap and compute the checksum for the file header just before writing
4228 the header to disk. */
4229 som_swap_header_out (obj_som_file_hdr (abfd), &ext_header);
4230 bfd_putb32 (som_compute_checksum (&ext_header), ext_header.checksum);
4231
4232 /* Only thing left to do is write out the file header. It is always
4233 at location zero. Seek there and write it. */
4234 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
4235 return false;
4236 amt = sizeof (struct som_external_header);
4237 if (bfd_bwrite (&ext_header, amt, abfd) != amt)
4238 return false;
4239
4240 /* Now write the exec header. */
4241 if (abfd->flags & (EXEC_P | DYNAMIC))
4242 {
4243 long tmp, som_length;
4244 struct som_exec_auxhdr *exec_header;
4245 struct som_external_exec_auxhdr ext_exec_header;
4246
4247 exec_header = obj_som_exec_hdr (abfd);
4248 exec_header->exec_entry = bfd_get_start_address (abfd);
4249 exec_header->exec_flags = obj_som_exec_data (abfd)->exec_flags;
4250
4251 /* Oh joys. Ram some of the BSS data into the DATA section
4252 to be compatible with how the hp linker makes objects
4253 (saves memory space). */
4254 tmp = exec_header->exec_dsize;
4255 tmp = SOM_ALIGN (tmp, PA_PAGESIZE);
4256 exec_header->exec_bsize -= (tmp - exec_header->exec_dsize);
4257 if (exec_header->exec_bsize < 0)
4258 exec_header->exec_bsize = 0;
4259 exec_header->exec_dsize = tmp;
4260
4261 /* Now perform some sanity checks. The idea is to catch bogons now and
4262 inform the user, instead of silently generating a bogus file. */
4263 som_length = obj_som_file_hdr (abfd)->som_length;
4264 if (exec_header->exec_tfile + exec_header->exec_tsize > som_length
4265 || exec_header->exec_dfile + exec_header->exec_dsize > som_length)
4266 {
4267 bfd_set_error (bfd_error_bad_value);
4268 return false;
4269 }
4270
4271 som_swap_exec_auxhdr_out (exec_header, &ext_exec_header);
4272
4273 if (bfd_seek (abfd, obj_som_file_hdr (abfd)->aux_header_location,
4274 SEEK_SET) != 0)
4275 return false;
4276
4277 amt = sizeof (ext_exec_header);
4278 if (bfd_bwrite (&ext_exec_header, amt, abfd) != amt)
4279 return false;
4280 }
4281 return true;
4282 }
4283
4284 /* Compute and return the checksum for a SOM file header. */
4285
4286 static uint32_t
4287 som_compute_checksum (struct som_external_header *hdr)
4288 {
4289 size_t count, i;
4290 uint32_t checksum;
4291 uint32_t *buffer = (uint32_t *) hdr;
4292
4293 checksum = 0;
4294 count = sizeof (*hdr) / sizeof (*buffer);
4295 for (i = 0; i < count; i++)
4296 checksum ^= *(buffer + i);
4297
4298 return checksum;
4299 }
4300
4301 static void
4302 som_bfd_derive_misc_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
4303 asymbol *sym,
4304 struct som_misc_symbol_info *info)
4305 {
4306 /* Initialize. */
4307 memset (info, 0, sizeof (struct som_misc_symbol_info));
4308
4309 /* The HP SOM linker requires detailed type information about
4310 all symbols (including undefined symbols!). Unfortunately,
4311 the type specified in an import/export statement does not
4312 always match what the linker wants. Severe braindamage. */
4313
4314 /* Section symbols will not have a SOM symbol type assigned to
4315 them yet. Assign all section symbols type ST_DATA. */
4316 if (sym->flags & BSF_SECTION_SYM)
4317 info->symbol_type = ST_DATA;
4318 else
4319 {
4320 /* For BFD style common, the linker will choke unless we set the
4321 type and scope to ST_STORAGE and SS_UNSAT, respectively. */
4322 if (bfd_is_com_section (sym->section))
4323 {
4324 info->symbol_type = ST_STORAGE;
4325 info->symbol_scope = SS_UNSAT;
4326 }
4327
4328 /* It is possible to have a symbol without an associated
4329 type. This happens if the user imported the symbol
4330 without a type and the symbol was never defined
4331 locally. If BSF_FUNCTION is set for this symbol, then
4332 assign it type ST_CODE (the HP linker requires undefined
4333 external functions to have type ST_CODE rather than ST_ENTRY). */
4334 else if ((som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN
4335 || som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE)
4336 && bfd_is_und_section (sym->section)
4337 && sym->flags & BSF_FUNCTION)
4338 info->symbol_type = ST_CODE;
4339
4340 /* Handle function symbols which were defined in this file.
4341 They should have type ST_ENTRY. Also retrieve the argument
4342 relocation bits from the SOM backend information. */
4343 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ENTRY
4344 || (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE
4345 && (sym->flags & BSF_FUNCTION))
4346 || (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN
4347 && (sym->flags & BSF_FUNCTION)))
4348 {
4349 info->symbol_type = ST_ENTRY;
4350 info->arg_reloc = som_symbol_data (sym)->tc_data.ap.hppa_arg_reloc;
4351 info->priv_level= som_symbol_data (sym)->tc_data.ap.hppa_priv_level;
4352 }
4353
4354 /* For unknown symbols set the symbol's type based on the symbol's
4355 section (ST_DATA for DATA sections, ST_CODE for CODE sections). */
4356 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN)
4357 {
4358 if (bfd_is_abs_section (sym->section))
4359 info->symbol_type = ST_ABSOLUTE;
4360 else if (sym->section->flags & SEC_CODE)
4361 info->symbol_type = ST_CODE;
4362 else
4363 info->symbol_type = ST_DATA;
4364 }
4365
4366 /* From now on it's a very simple mapping. */
4367 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ABSOLUTE)
4368 info->symbol_type = ST_ABSOLUTE;
4369 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE)
4370 info->symbol_type = ST_CODE;
4371 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_DATA)
4372 info->symbol_type = ST_DATA;
4373 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_MILLICODE)
4374 info->symbol_type = ST_MILLICODE;
4375 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PLABEL)
4376 info->symbol_type = ST_PLABEL;
4377 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PRI_PROG)
4378 info->symbol_type = ST_PRI_PROG;
4379 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_SEC_PROG)
4380 info->symbol_type = ST_SEC_PROG;
4381 }
4382
4383 /* Now handle the symbol's scope. Exported data which is not
4384 in the common section has scope SS_UNIVERSAL. Note scope
4385 of common symbols was handled earlier! */
4386 if (bfd_is_com_section (sym->section))
4387 ;
4388 else if (bfd_is_und_section (sym->section))
4389 info->symbol_scope = SS_UNSAT;
4390 else if (sym->flags & (BSF_EXPORT | BSF_WEAK))
4391 info->symbol_scope = SS_UNIVERSAL;
4392 /* Anything else which is not in the common section has scope
4393 SS_LOCAL. */
4394 else
4395 info->symbol_scope = SS_LOCAL;
4396
4397 /* Now set the symbol_info field. It has no real meaning
4398 for undefined or common symbols, but the HP linker will
4399 choke if it's not set to some "reasonable" value. We
4400 use zero as a reasonable value. */
4401 if (bfd_is_com_section (sym->section)
4402 || bfd_is_und_section (sym->section)
4403 || bfd_is_abs_section (sym->section))
4404 info->symbol_info = 0;
4405 /* For all other symbols, the symbol_info field contains the
4406 subspace index of the space this symbol is contained in. */
4407 else
4408 info->symbol_info = sym->section->target_index;
4409
4410 /* Set the symbol's value. */
4411 info->symbol_value = sym->value + sym->section->vma;
4412
4413 /* The secondary_def field is for "weak" symbols. */
4414 if (sym->flags & BSF_WEAK)
4415 info->secondary_def = true;
4416 else
4417 info->secondary_def = false;
4418
4419 /* The is_comdat, is_common and dup_common fields provide various
4420 flavors of common.
4421
4422 For data symbols, setting IS_COMMON provides Fortran style common
4423 (duplicate definitions and overlapped initialization). Setting both
4424 IS_COMMON and DUP_COMMON provides Cobol style common (duplicate
4425 definitions as long as they are all the same length). In a shared
4426 link data symbols retain their IS_COMMON and DUP_COMMON flags.
4427 An IS_COMDAT data symbol is similar to a IS_COMMON | DUP_COMMON
4428 symbol except in that it loses its IS_COMDAT flag in a shared link.
4429
4430 For code symbols, IS_COMDAT and DUP_COMMON have effect. Universal
4431 DUP_COMMON code symbols are not exported from shared libraries.
4432 IS_COMDAT symbols are exported but they lose their IS_COMDAT flag.
4433
4434 We take a simplified approach to setting the is_comdat, is_common
4435 and dup_common flags in symbols based on the flag settings of their
4436 subspace. This avoids having to add directives like `.comdat' but
4437 the linker behavior is probably undefined if there is more than one
4438 universal symbol (comdat key sysmbol) in a subspace.
4439
4440 The behavior of these flags is not well documentmented, so there
4441 may be bugs and some surprising interactions with other flags. */
4442 if (som_section_data (sym->section)
4443 && som_section_data (sym->section)->subspace_dict
4444 && info->symbol_scope == SS_UNIVERSAL
4445 && (info->symbol_type == ST_ENTRY
4446 || info->symbol_type == ST_CODE
4447 || info->symbol_type == ST_DATA))
4448 {
4449 info->is_comdat
4450 = som_section_data (sym->section)->subspace_dict->is_comdat;
4451 info->is_common
4452 = som_section_data (sym->section)->subspace_dict->is_common;
4453 info->dup_common
4454 = som_section_data (sym->section)->subspace_dict->dup_common;
4455 }
4456 }
4457
4458 /* Build and write, in one big chunk, the entire symbol table for
4459 this BFD. */
4460
4461 static bool
4462 som_build_and_write_symbol_table (bfd *abfd)
4463 {
4464 unsigned int num_syms = bfd_get_symcount (abfd);
4465 file_ptr symtab_location = obj_som_file_hdr (abfd)->symbol_location;
4466 asymbol **bfd_syms = obj_som_sorted_syms (abfd);
4467 struct som_external_symbol_dictionary_record *som_symtab = NULL;
4468 unsigned int i;
4469 bfd_size_type symtab_size;
4470 size_t amt;
4471
4472 /* Compute total symbol table size and allocate a chunk of memory
4473 to hold the symbol table as we build it. */
4474 if (_bfd_mul_overflow (num_syms,
4475 sizeof (struct som_external_symbol_dictionary_record),
4476 &amt))
4477 {
4478 bfd_set_error (bfd_error_no_memory);
4479 return false;
4480 }
4481 som_symtab = bfd_zmalloc (amt);
4482 if (som_symtab == NULL && num_syms != 0)
4483 goto error_return;
4484
4485 /* Walk over each symbol. */
4486 for (i = 0; i < num_syms; i++)
4487 {
4488 struct som_misc_symbol_info info;
4489 unsigned int flags;
4490
4491 /* This is really an index into the symbol strings table.
4492 By the time we get here, the index has already been
4493 computed and stored into the name field in the BFD symbol. */
4494 bfd_putb32 (som_symbol_data (bfd_syms[i])->stringtab_offset,
4495 som_symtab[i].name);
4496
4497 /* Derive SOM information from the BFD symbol. */
4498 som_bfd_derive_misc_symbol_info (abfd, bfd_syms[i], &info);
4499
4500 /* Now use it. */
4501 flags = (info.symbol_type << SOM_SYMBOL_TYPE_SH)
4502 | (info.symbol_scope << SOM_SYMBOL_SCOPE_SH)
4503 | (info.arg_reloc << SOM_SYMBOL_ARG_RELOC_SH)
4504 | (3 << SOM_SYMBOL_XLEAST_SH)
4505 | (info.secondary_def ? SOM_SYMBOL_SECONDARY_DEF : 0)
4506 | (info.is_common ? SOM_SYMBOL_IS_COMMON : 0)
4507 | (info.dup_common ? SOM_SYMBOL_DUP_COMMON : 0);
4508 bfd_putb32 (flags, som_symtab[i].flags);
4509
4510 flags = (info.symbol_info << SOM_SYMBOL_SYMBOL_INFO_SH)
4511 | (info.is_comdat ? SOM_SYMBOL_IS_COMDAT : 0);
4512 bfd_putb32 (flags, som_symtab[i].info);
4513 bfd_putb32 (info.symbol_value | info.priv_level,
4514 som_symtab[i].symbol_value);
4515 }
4516
4517 /* Everything is ready, seek to the right location and
4518 scribble out the symbol table. */
4519 if (bfd_seek (abfd, symtab_location, SEEK_SET) != 0)
4520 goto error_return;
4521
4522 symtab_size = num_syms;
4523 symtab_size *= sizeof (struct som_external_symbol_dictionary_record);
4524 if (bfd_bwrite ((void *) som_symtab, symtab_size, abfd) != symtab_size)
4525 goto error_return;
4526
4527 free (som_symtab);
4528 return true;
4529
4530 error_return:
4531 free (som_symtab);
4532 return false;
4533 }
4534
4535 /* Write an object in SOM format. */
4536
4537 static bool
4538 som_write_object_contents (bfd *abfd)
4539 {
4540 if (! abfd->output_has_begun)
4541 {
4542 /* Set up fixed parts of the file, space, and subspace headers.
4543 Notify the world that output has begun. */
4544 som_prep_headers (abfd);
4545 abfd->output_has_begun = true;
4546 /* Start writing the object file. This include all the string
4547 tables, fixup streams, and other portions of the object file. */
4548 som_begin_writing (abfd);
4549 }
4550
4551 return som_finish_writing (abfd);
4552 }
4553 \f
4554 /* Read and save the string table associated with the given BFD. */
4555
4556 static bool
4557 som_slurp_string_table (bfd *abfd)
4558 {
4559 char *stringtab;
4560 bfd_size_type amt;
4561
4562 /* Use the saved version if its available. */
4563 if (obj_som_stringtab (abfd) != NULL)
4564 return true;
4565
4566 /* I don't think this can currently happen, and I'm not sure it should
4567 really be an error, but it's better than getting unpredictable results
4568 from the host's malloc when passed a size of zero. */
4569 if (obj_som_stringtab_size (abfd) == 0)
4570 {
4571 bfd_set_error (bfd_error_no_symbols);
4572 return false;
4573 }
4574
4575 /* Allocate and read in the string table. */
4576 if (bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET) != 0)
4577 return false;
4578 amt = obj_som_stringtab_size (abfd);
4579 stringtab = (char *) _bfd_malloc_and_read (abfd, amt + 1, amt);
4580 if (stringtab == NULL)
4581 return false;
4582 /* Make sure that the strings are zero-terminated. */
4583 stringtab[amt] = 0;
4584
4585 /* Save our results and return success. */
4586 obj_som_stringtab (abfd) = stringtab;
4587 return true;
4588 }
4589
4590 /* Return the amount of data (in bytes) required to hold the symbol
4591 table for this object. */
4592
4593 static long
4594 som_get_symtab_upper_bound (bfd *abfd)
4595 {
4596 if (!som_slurp_symbol_table (abfd))
4597 return -1;
4598
4599 return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *);
4600 }
4601
4602 /* Convert from a SOM subspace index to a BFD section. */
4603
4604 asection *
4605 bfd_section_from_som_symbol
4606 (bfd *abfd, struct som_external_symbol_dictionary_record *symbol)
4607 {
4608 asection *section;
4609 unsigned int flags = bfd_getb32 (symbol->flags);
4610 unsigned int symbol_type = (flags >> SOM_SYMBOL_TYPE_SH) & SOM_SYMBOL_TYPE_MASK;
4611
4612 /* The meaning of the symbol_info field changes for functions
4613 within executables. So only use the quick symbol_info mapping for
4614 incomplete objects and non-function symbols in executables. */
4615 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0
4616 || (symbol_type != ST_ENTRY
4617 && symbol_type != ST_PRI_PROG
4618 && symbol_type != ST_SEC_PROG
4619 && symbol_type != ST_MILLICODE))
4620 {
4621 int idx = (bfd_getb32 (symbol->info) >> SOM_SYMBOL_SYMBOL_INFO_SH)
4622 & SOM_SYMBOL_SYMBOL_INFO_MASK;
4623
4624 for (section = abfd->sections; section != NULL; section = section->next)
4625 if (section->target_index == idx && som_is_subspace (section))
4626 return section;
4627 }
4628 else
4629 {
4630 unsigned int value = bfd_getb32 (symbol->symbol_value);
4631
4632 /* For executables we will have to use the symbol's address and
4633 find out what section would contain that address. Yuk. */
4634 for (section = abfd->sections; section; section = section->next)
4635 if (value >= section->vma
4636 && value <= section->vma + section->size
4637 && som_is_subspace (section))
4638 return section;
4639 }
4640
4641 /* Could be a symbol from an external library (such as an OMOS
4642 shared library). Don't abort. */
4643 return bfd_abs_section_ptr;
4644 }
4645
4646 /* Read and save the symbol table associated with the given BFD. */
4647
4648 static unsigned int
4649 som_slurp_symbol_table (bfd *abfd)
4650 {
4651 unsigned int symbol_count = bfd_get_symcount (abfd);
4652 size_t symsize = sizeof (struct som_external_symbol_dictionary_record);
4653 char *stringtab;
4654 struct som_external_symbol_dictionary_record *buf = NULL, *bufp, *endbufp;
4655 som_symbol_type *sym, *symbase = NULL;
4656 size_t amt;
4657
4658 /* Return saved value if it exists. */
4659 if (obj_som_symtab (abfd) != NULL)
4660 goto successful_return;
4661
4662 /* Special case. This is *not* an error. */
4663 if (symbol_count == 0)
4664 goto successful_return;
4665
4666 if (!som_slurp_string_table (abfd))
4667 goto error_return;
4668
4669 stringtab = obj_som_stringtab (abfd);
4670
4671 /* Read in the external SOM representation. */
4672 if (_bfd_mul_overflow (symbol_count, symsize, &amt))
4673 {
4674 bfd_set_error (bfd_error_file_too_big);
4675 goto error_return;
4676 }
4677 if (bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET) != 0)
4678 goto error_return;
4679 buf = (struct som_external_symbol_dictionary_record *)
4680 _bfd_malloc_and_read (abfd, amt, amt);
4681 if (buf == NULL)
4682 goto error_return;
4683
4684 if (_bfd_mul_overflow (symbol_count, sizeof (som_symbol_type), &amt))
4685 {
4686 bfd_set_error (bfd_error_file_too_big);
4687 goto error_return;
4688 }
4689 symbase = bfd_zmalloc (amt);
4690 if (symbase == NULL)
4691 goto error_return;
4692
4693 /* Iterate over all the symbols and internalize them. */
4694 endbufp = buf + symbol_count;
4695 for (bufp = buf, sym = symbase; bufp < endbufp; ++bufp)
4696 {
4697 unsigned int flags = bfd_getb32 (bufp->flags);
4698 unsigned int symbol_type =
4699 (flags >> SOM_SYMBOL_TYPE_SH) & SOM_SYMBOL_TYPE_MASK;
4700 unsigned int symbol_scope =
4701 (flags >> SOM_SYMBOL_SCOPE_SH) & SOM_SYMBOL_SCOPE_MASK;
4702 bfd_vma offset;
4703
4704 /* I don't think we care about these. */
4705 if (symbol_type == ST_SYM_EXT || symbol_type == ST_ARG_EXT)
4706 continue;
4707
4708 /* Set some private data we care about. */
4709 if (symbol_type == ST_NULL)
4710 som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN;
4711 else if (symbol_type == ST_ABSOLUTE)
4712 som_symbol_data (sym)->som_type = SYMBOL_TYPE_ABSOLUTE;
4713 else if (symbol_type == ST_DATA)
4714 som_symbol_data (sym)->som_type = SYMBOL_TYPE_DATA;
4715 else if (symbol_type == ST_CODE)
4716 som_symbol_data (sym)->som_type = SYMBOL_TYPE_CODE;
4717 else if (symbol_type == ST_PRI_PROG)
4718 som_symbol_data (sym)->som_type = SYMBOL_TYPE_PRI_PROG;
4719 else if (symbol_type == ST_SEC_PROG)
4720 som_symbol_data (sym)->som_type = SYMBOL_TYPE_SEC_PROG;
4721 else if (symbol_type == ST_ENTRY)
4722 som_symbol_data (sym)->som_type = SYMBOL_TYPE_ENTRY;
4723 else if (symbol_type == ST_MILLICODE)
4724 som_symbol_data (sym)->som_type = SYMBOL_TYPE_MILLICODE;
4725 else if (symbol_type == ST_PLABEL)
4726 som_symbol_data (sym)->som_type = SYMBOL_TYPE_PLABEL;
4727 else
4728 som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN;
4729 som_symbol_data (sym)->tc_data.ap.hppa_arg_reloc =
4730 (flags >> SOM_SYMBOL_ARG_RELOC_SH) & SOM_SYMBOL_ARG_RELOC_MASK;
4731
4732 /* Some reasonable defaults. */
4733 sym->symbol.the_bfd = abfd;
4734 offset = bfd_getb32 (bufp->name);
4735 if (offset < obj_som_stringtab_size (abfd))
4736 sym->symbol.name = offset + stringtab;
4737 else
4738 {
4739 bfd_set_error (bfd_error_bad_value);
4740 goto error_return;
4741 }
4742 sym->symbol.value = bfd_getb32 (bufp->symbol_value);
4743 sym->symbol.section = NULL;
4744 sym->symbol.flags = 0;
4745
4746 switch (symbol_type)
4747 {
4748 case ST_ENTRY:
4749 case ST_MILLICODE:
4750 sym->symbol.flags |= BSF_FUNCTION;
4751 som_symbol_data (sym)->tc_data.ap.hppa_priv_level =
4752 sym->symbol.value & 0x3;
4753 sym->symbol.value &= ~0x3;
4754 break;
4755
4756 case ST_STUB:
4757 case ST_CODE:
4758 case ST_PRI_PROG:
4759 case ST_SEC_PROG:
4760 som_symbol_data (sym)->tc_data.ap.hppa_priv_level =
4761 sym->symbol.value & 0x3;
4762 sym->symbol.value &= ~0x3;
4763 /* If the symbol's scope is SS_UNSAT, then these are
4764 undefined function symbols. */
4765 if (symbol_scope == SS_UNSAT)
4766 sym->symbol.flags |= BSF_FUNCTION;
4767
4768 default:
4769 break;
4770 }
4771
4772 /* Handle scoping and section information. */
4773 switch (symbol_scope)
4774 {
4775 /* symbol_info field is undefined for SS_EXTERNAL and SS_UNSAT symbols,
4776 so the section associated with this symbol can't be known. */
4777 case SS_EXTERNAL:
4778 if (symbol_type != ST_STORAGE)
4779 sym->symbol.section = bfd_und_section_ptr;
4780 else
4781 sym->symbol.section = bfd_com_section_ptr;
4782 sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL);
4783 break;
4784
4785 case SS_UNSAT:
4786 if (symbol_type != ST_STORAGE)
4787 sym->symbol.section = bfd_und_section_ptr;
4788 else
4789 sym->symbol.section = bfd_com_section_ptr;
4790 break;
4791
4792 case SS_UNIVERSAL:
4793 sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL);
4794 sym->symbol.section = bfd_section_from_som_symbol (abfd, bufp);
4795 sym->symbol.value -= sym->symbol.section->vma;
4796 break;
4797
4798 case SS_LOCAL:
4799 sym->symbol.flags |= BSF_LOCAL;
4800 sym->symbol.section = bfd_section_from_som_symbol (abfd, bufp);
4801 sym->symbol.value -= sym->symbol.section->vma;
4802 break;
4803
4804 default:
4805 sym->symbol.section = bfd_und_section_ptr;
4806 break;
4807 }
4808
4809 /* Check for a weak symbol. */
4810 if (flags & SOM_SYMBOL_SECONDARY_DEF)
4811 sym->symbol.flags |= BSF_WEAK;
4812 /* Mark section symbols and symbols used by the debugger.
4813 Note $START$ is a magic code symbol, NOT a section symbol. */
4814 if (sym->symbol.name[0] == '$'
4815 && sym->symbol.name[strlen (sym->symbol.name) - 1] == '$'
4816 && !strcmp (sym->symbol.name, sym->symbol.section->name))
4817 sym->symbol.flags |= BSF_SECTION_SYM;
4818 else if (startswith (sym->symbol.name, "L$0\002"))
4819 {
4820 sym->symbol.flags |= BSF_SECTION_SYM;
4821 sym->symbol.name = sym->symbol.section->name;
4822 }
4823 else if (startswith (sym->symbol.name, "L$0\001"))
4824 sym->symbol.flags |= BSF_DEBUGGING;
4825 /* Note increment at bottom of loop, since we skip some symbols
4826 we can not include it as part of the for statement. */
4827 sym++;
4828 }
4829
4830 /* We modify the symbol count to record the number of BFD symbols we
4831 created. */
4832 abfd->symcount = sym - symbase;
4833
4834 /* Save our results and return success. */
4835 obj_som_symtab (abfd) = symbase;
4836 successful_return:
4837 free (buf);
4838 return true;
4839
4840 error_return:
4841 free (symbase);
4842 free (buf);
4843 return false;
4844 }
4845
4846 /* Canonicalize a SOM symbol table. Return the number of entries
4847 in the symbol table. */
4848
4849 static long
4850 som_canonicalize_symtab (bfd *abfd, asymbol **location)
4851 {
4852 int i;
4853 som_symbol_type *symbase;
4854
4855 if (!som_slurp_symbol_table (abfd))
4856 return -1;
4857
4858 i = bfd_get_symcount (abfd);
4859 symbase = obj_som_symtab (abfd);
4860
4861 for (; i > 0; i--, location++, symbase++)
4862 *location = &symbase->symbol;
4863
4864 /* Final null pointer. */
4865 *location = 0;
4866 return (bfd_get_symcount (abfd));
4867 }
4868
4869 /* Make a SOM symbol. There is nothing special to do here. */
4870
4871 static asymbol *
4872 som_make_empty_symbol (bfd *abfd)
4873 {
4874 size_t amt = sizeof (som_symbol_type);
4875 som_symbol_type *new_symbol_type = bfd_zalloc (abfd, amt);
4876
4877 if (new_symbol_type == NULL)
4878 return NULL;
4879 new_symbol_type->symbol.the_bfd = abfd;
4880
4881 return &new_symbol_type->symbol;
4882 }
4883
4884 /* Print symbol information. */
4885
4886 static void
4887 som_print_symbol (bfd *abfd,
4888 void *afile,
4889 asymbol *symbol,
4890 bfd_print_symbol_type how)
4891 {
4892 FILE *file = (FILE *) afile;
4893
4894 switch (how)
4895 {
4896 case bfd_print_symbol_name:
4897 fprintf (file, "%s", symbol->name);
4898 break;
4899 case bfd_print_symbol_more:
4900 fprintf (file, "som ");
4901 fprintf_vma (file, symbol->value);
4902 fprintf (file, " %lx", (long) symbol->flags);
4903 break;
4904 case bfd_print_symbol_all:
4905 {
4906 const char *section_name;
4907
4908 section_name = symbol->section ? symbol->section->name : "(*none*)";
4909 bfd_print_symbol_vandf (abfd, (void *) file, symbol);
4910 fprintf (file, " %s\t%s", section_name, symbol->name);
4911 break;
4912 }
4913 }
4914 }
4915
4916 static bool
4917 som_bfd_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
4918 const char *name)
4919 {
4920 return name[0] == 'L' && name[1] == '$';
4921 }
4922
4923 /* Count or process variable-length SOM fixup records.
4924
4925 To avoid code duplication we use this code both to compute the number
4926 of relocations requested by a stream, and to internalize the stream.
4927
4928 When computing the number of relocations requested by a stream the
4929 variables rptr, section, and symbols have no meaning.
4930
4931 Return the number of relocations requested by the fixup stream. When
4932 not just counting
4933
4934 This needs at least two or three more passes to get it cleaned up. */
4935
4936 static unsigned int
4937 som_set_reloc_info (unsigned char *fixup,
4938 unsigned int end,
4939 arelent *internal_relocs,
4940 asection *section,
4941 asymbol **symbols,
4942 bool just_count)
4943 {
4944 unsigned int op, varname, deallocate_contents = 0;
4945 unsigned char *end_fixups = &fixup[end];
4946 const struct fixup_format *fp;
4947 const char *cp;
4948 unsigned char *save_fixup;
4949 int variables[26], stack[20], c, v, count, prev_fixup, *sp, saved_unwind_bits;
4950 const int *subop;
4951 arelent *rptr = internal_relocs;
4952 unsigned int offset = 0;
4953
4954 #define var(c) variables[(c) - 'A']
4955 #define push(v) (*sp++ = (v))
4956 #define pop() (*--sp)
4957 #define emptystack() (sp == stack)
4958
4959 som_initialize_reloc_queue (reloc_queue);
4960 memset (variables, 0, sizeof (variables));
4961 memset (stack, 0, sizeof (stack));
4962 count = 0;
4963 prev_fixup = 0;
4964 saved_unwind_bits = 0;
4965 sp = stack;
4966
4967 while (fixup < end_fixups)
4968 {
4969 /* Save pointer to the start of this fixup. We'll use
4970 it later to determine if it is necessary to put this fixup
4971 on the queue. */
4972 save_fixup = fixup;
4973
4974 /* Get the fixup code and its associated format. */
4975 op = *fixup++;
4976 fp = &som_fixup_formats[op];
4977
4978 /* Handle a request for a previous fixup. */
4979 if (*fp->format == 'P')
4980 {
4981 /* Get pointer to the beginning of the prev fixup, move
4982 the repeated fixup to the head of the queue. */
4983 fixup = reloc_queue[fp->D].reloc;
4984 som_reloc_queue_fix (reloc_queue, fp->D);
4985 prev_fixup = 1;
4986
4987 /* Get the fixup code and its associated format. */
4988 op = *fixup++;
4989 fp = &som_fixup_formats[op];
4990 }
4991
4992 /* If this fixup will be passed to BFD, set some reasonable defaults. */
4993 if (! just_count
4994 && som_hppa_howto_table[op].type != R_NO_RELOCATION
4995 && som_hppa_howto_table[op].type != R_DATA_OVERRIDE)
4996 {
4997 rptr->address = offset;
4998 rptr->howto = &som_hppa_howto_table[op];
4999 rptr->addend = 0;
5000 rptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
5001 }
5002
5003 /* Set default input length to 0. Get the opcode class index
5004 into D. */
5005 var ('L') = 0;
5006 var ('D') = fp->D;
5007 var ('U') = saved_unwind_bits;
5008
5009 /* Get the opcode format. */
5010 cp = fp->format;
5011
5012 /* Process the format string. Parsing happens in two phases,
5013 parse RHS, then assign to LHS. Repeat until no more
5014 characters in the format string. */
5015 while (*cp)
5016 {
5017 /* The variable this pass is going to compute a value for. */
5018 varname = *cp++;
5019
5020 /* Start processing RHS. Continue until a NULL or '=' is found. */
5021 do
5022 {
5023 c = *cp++;
5024
5025 /* If this is a variable, push it on the stack. */
5026 if (ISUPPER (c))
5027 push (var (c));
5028
5029 /* If this is a lower case letter, then it represents
5030 additional data from the fixup stream to be pushed onto
5031 the stack. */
5032 else if (ISLOWER (c))
5033 {
5034 int bits = (c - 'a') * 8;
5035 for (v = 0; c > 'a'; --c)
5036 v = (v << 8) | *fixup++;
5037 if (varname == 'V')
5038 v = sign_extend (v, bits);
5039 push (v);
5040 }
5041
5042 /* A decimal constant. Push it on the stack. */
5043 else if (ISDIGIT (c))
5044 {
5045 v = c - '0';
5046 while (ISDIGIT (*cp))
5047 v = (v * 10) + (*cp++ - '0');
5048 push (v);
5049 }
5050 else
5051 /* An operator. Pop two values from the stack and
5052 use them as operands to the given operation. Push
5053 the result of the operation back on the stack. */
5054 switch (c)
5055 {
5056 case '+':
5057 v = pop ();
5058 v += pop ();
5059 push (v);
5060 break;
5061 case '*':
5062 v = pop ();
5063 v *= pop ();
5064 push (v);
5065 break;
5066 case '<':
5067 v = pop ();
5068 v = pop () << v;
5069 push (v);
5070 break;
5071 default:
5072 abort ();
5073 }
5074 }
5075 while (*cp && *cp != '=');
5076
5077 /* Move over the equal operator. */
5078 cp++;
5079
5080 /* Pop the RHS off the stack. */
5081 c = pop ();
5082
5083 /* Perform the assignment. */
5084 var (varname) = c;
5085
5086 /* Handle side effects. and special 'O' stack cases. */
5087 switch (varname)
5088 {
5089 /* Consume some bytes from the input space. */
5090 case 'L':
5091 offset += c;
5092 break;
5093 /* A symbol to use in the relocation. Make a note
5094 of this if we are not just counting. */
5095 case 'S':
5096 if (! just_count)
5097 rptr->sym_ptr_ptr = &symbols[c];
5098 break;
5099 /* Argument relocation bits for a function call. */
5100 case 'R':
5101 if (! just_count)
5102 {
5103 unsigned int tmp = var ('R');
5104 rptr->addend = 0;
5105
5106 if ((som_hppa_howto_table[op].type == R_PCREL_CALL
5107 && R_PCREL_CALL + 10 > op)
5108 || (som_hppa_howto_table[op].type == R_ABS_CALL
5109 && R_ABS_CALL + 10 > op))
5110 {
5111 /* Simple encoding. */
5112 if (tmp > 4)
5113 {
5114 tmp -= 5;
5115 rptr->addend |= 1;
5116 }
5117 if (tmp == 4)
5118 rptr->addend |= 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2;
5119 else if (tmp == 3)
5120 rptr->addend |= 1 << 8 | 1 << 6 | 1 << 4;
5121 else if (tmp == 2)
5122 rptr->addend |= 1 << 8 | 1 << 6;
5123 else if (tmp == 1)
5124 rptr->addend |= 1 << 8;
5125 }
5126 else
5127 {
5128 unsigned int tmp1, tmp2;
5129
5130 /* First part is easy -- low order two bits are
5131 directly copied, then shifted away. */
5132 rptr->addend = tmp & 0x3;
5133 tmp >>= 2;
5134
5135 /* Diving the result by 10 gives us the second
5136 part. If it is 9, then the first two words
5137 are a double precision paramater, else it is
5138 3 * the first arg bits + the 2nd arg bits. */
5139 tmp1 = tmp / 10;
5140 tmp -= tmp1 * 10;
5141 if (tmp1 == 9)
5142 rptr->addend += (0xe << 6);
5143 else
5144 {
5145 /* Get the two pieces. */
5146 tmp2 = tmp1 / 3;
5147 tmp1 -= tmp2 * 3;
5148 /* Put them in the addend. */
5149 rptr->addend += (tmp2 << 8) + (tmp1 << 6);
5150 }
5151
5152 /* What's left is the third part. It's unpacked
5153 just like the second. */
5154 if (tmp == 9)
5155 rptr->addend += (0xe << 2);
5156 else
5157 {
5158 tmp2 = tmp / 3;
5159 tmp -= tmp2 * 3;
5160 rptr->addend += (tmp2 << 4) + (tmp << 2);
5161 }
5162 }
5163 rptr->addend = HPPA_R_ADDEND (rptr->addend, 0);
5164 }
5165 break;
5166 /* Handle the linker expression stack. */
5167 case 'O':
5168 switch (op)
5169 {
5170 case R_COMP1:
5171 subop = comp1_opcodes;
5172 break;
5173 case R_COMP2:
5174 subop = comp2_opcodes;
5175 break;
5176 case R_COMP3:
5177 subop = comp3_opcodes;
5178 break;
5179 default:
5180 abort ();
5181 }
5182 while (*subop <= (unsigned char) c)
5183 ++subop;
5184 --subop;
5185 break;
5186 /* The lower 32unwind bits must be persistent. */
5187 case 'U':
5188 saved_unwind_bits = var ('U');
5189 break;
5190
5191 default:
5192 break;
5193 }
5194 }
5195
5196 /* If we used a previous fixup, clean up after it. */
5197 if (prev_fixup)
5198 {
5199 fixup = save_fixup + 1;
5200 prev_fixup = 0;
5201 }
5202 /* Queue it. */
5203 else if (fixup > save_fixup + 1)
5204 som_reloc_queue_insert (save_fixup, fixup - save_fixup, reloc_queue);
5205
5206 /* We do not pass R_DATA_OVERRIDE or R_NO_RELOCATION
5207 fixups to BFD. */
5208 if (som_hppa_howto_table[op].type != R_DATA_OVERRIDE
5209 && som_hppa_howto_table[op].type != R_NO_RELOCATION)
5210 {
5211 /* Done with a single reloction. Loop back to the top. */
5212 if (! just_count)
5213 {
5214 if (som_hppa_howto_table[op].type == R_ENTRY)
5215 rptr->addend = var ('T');
5216 else if (som_hppa_howto_table[op].type == R_EXIT)
5217 rptr->addend = var ('U');
5218 else if (som_hppa_howto_table[op].type == R_PCREL_CALL
5219 || som_hppa_howto_table[op].type == R_ABS_CALL)
5220 ;
5221 else if (som_hppa_howto_table[op].type == R_DATA_ONE_SYMBOL)
5222 {
5223 /* Try what was specified in R_DATA_OVERRIDE first
5224 (if anything). Then the hard way using the
5225 section contents. */
5226 rptr->addend = var ('V');
5227
5228 if (rptr->addend == 0 && !section->contents)
5229 {
5230 /* Got to read the damn contents first. We don't
5231 bother saving the contents (yet). Add it one
5232 day if the need arises. */
5233 bfd_byte *contents;
5234 if (!bfd_malloc_and_get_section (section->owner, section,
5235 &contents))
5236 {
5237 free (contents);
5238 return (unsigned) -1;
5239 }
5240 section->contents = contents;
5241 deallocate_contents = 1;
5242 }
5243 else if (rptr->addend == 0)
5244 rptr->addend = bfd_get_32 (section->owner,
5245 (section->contents
5246 + offset - var ('L')));
5247
5248 }
5249 else
5250 rptr->addend = var ('V');
5251 rptr++;
5252 }
5253 count++;
5254 /* Now that we've handled a "full" relocation, reset
5255 some state. */
5256 memset (variables, 0, sizeof (variables));
5257 memset (stack, 0, sizeof (stack));
5258 }
5259 }
5260 if (deallocate_contents)
5261 free (section->contents);
5262
5263 return count;
5264
5265 #undef var
5266 #undef push
5267 #undef pop
5268 #undef emptystack
5269 }
5270
5271 /* Read in the relocs (aka fixups in SOM terms) for a section.
5272
5273 som_get_reloc_upper_bound calls this routine with JUST_COUNT
5274 set to TRUE to indicate it only needs a count of the number
5275 of actual relocations. */
5276
5277 static bool
5278 som_slurp_reloc_table (bfd *abfd,
5279 asection *section,
5280 asymbol **symbols,
5281 bool just_count)
5282 {
5283 unsigned char *external_relocs;
5284 unsigned int fixup_stream_size;
5285 arelent *internal_relocs;
5286 unsigned int num_relocs;
5287 size_t amt;
5288
5289 fixup_stream_size = som_section_data (section)->reloc_size;
5290 /* If there were no relocations, then there is nothing to do. */
5291 if (section->reloc_count == 0)
5292 return true;
5293
5294 /* If reloc_count is -1, then the relocation stream has not been
5295 parsed. We must do so now to know how many relocations exist. */
5296 if (section->reloc_count == (unsigned) -1)
5297 {
5298 /* Read in the external forms. */
5299 if (bfd_seek (abfd, obj_som_reloc_filepos (abfd) + section->rel_filepos,
5300 SEEK_SET) != 0)
5301 return false;
5302 amt = fixup_stream_size;
5303 external_relocs = _bfd_malloc_and_read (abfd, amt, amt);
5304 if (external_relocs == NULL)
5305 return false;
5306
5307 /* Let callers know how many relocations found.
5308 also save the relocation stream as we will
5309 need it again. */
5310 section->reloc_count = som_set_reloc_info (external_relocs,
5311 fixup_stream_size,
5312 NULL, NULL, NULL, true);
5313
5314 som_section_data (section)->reloc_stream = external_relocs;
5315 }
5316
5317 /* If the caller only wanted a count, then return now. */
5318 if (just_count)
5319 return true;
5320
5321 num_relocs = section->reloc_count;
5322 external_relocs = som_section_data (section)->reloc_stream;
5323 /* Return saved information about the relocations if it is available. */
5324 if (section->relocation != NULL)
5325 return true;
5326
5327 if (_bfd_mul_overflow (num_relocs, sizeof (arelent), &amt))
5328 {
5329 bfd_set_error (bfd_error_file_too_big);
5330 return false;
5331 }
5332 internal_relocs = bfd_zalloc (abfd, amt);
5333 if (internal_relocs == NULL)
5334 return false;
5335
5336 /* Process and internalize the relocations. */
5337 som_set_reloc_info (external_relocs, fixup_stream_size,
5338 internal_relocs, section, symbols, false);
5339
5340 /* We're done with the external relocations. Free them. */
5341 free (external_relocs);
5342 som_section_data (section)->reloc_stream = NULL;
5343
5344 /* Save our results and return success. */
5345 section->relocation = internal_relocs;
5346 return true;
5347 }
5348
5349 /* Return the number of bytes required to store the relocation
5350 information associated with the given section. */
5351
5352 static long
5353 som_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
5354 {
5355 /* If section has relocations, then read in the relocation stream
5356 and parse it to determine how many relocations exist. */
5357 if (asect->flags & SEC_RELOC)
5358 {
5359 if (! som_slurp_reloc_table (abfd, asect, NULL, true))
5360 return -1;
5361 return (asect->reloc_count + 1) * sizeof (arelent *);
5362 }
5363
5364 /* There are no relocations. Return enough space to hold the
5365 NULL pointer which will be installed if som_canonicalize_reloc
5366 is called. */
5367 return sizeof (arelent *);
5368 }
5369
5370 /* Convert relocations from SOM (external) form into BFD internal
5371 form. Return the number of relocations. */
5372
5373 static long
5374 som_canonicalize_reloc (bfd *abfd,
5375 sec_ptr section,
5376 arelent **relptr,
5377 asymbol **symbols)
5378 {
5379 arelent *tblptr;
5380 int count;
5381
5382 if (! som_slurp_reloc_table (abfd, section, symbols, false))
5383 return -1;
5384
5385 count = section->reloc_count;
5386 tblptr = section->relocation;
5387
5388 while (count--)
5389 *relptr++ = tblptr++;
5390
5391 *relptr = NULL;
5392 return section->reloc_count;
5393 }
5394
5395 extern const bfd_target hppa_som_vec;
5396
5397 /* A hook to set up object file dependent section information. */
5398
5399 static bool
5400 som_new_section_hook (bfd *abfd, asection *newsect)
5401 {
5402 if (!newsect->used_by_bfd)
5403 {
5404 size_t amt = sizeof (struct som_section_data_struct);
5405
5406 newsect->used_by_bfd = bfd_zalloc (abfd, amt);
5407 if (!newsect->used_by_bfd)
5408 return false;
5409 }
5410 newsect->alignment_power = 3;
5411
5412 /* We allow more than three sections internally. */
5413 return _bfd_generic_new_section_hook (abfd, newsect);
5414 }
5415
5416 /* Copy any private info we understand from the input symbol
5417 to the output symbol. */
5418
5419 static bool
5420 som_bfd_copy_private_symbol_data (bfd *ibfd,
5421 asymbol *isymbol,
5422 bfd *obfd,
5423 asymbol *osymbol)
5424 {
5425 struct som_symbol *input_symbol = (struct som_symbol *) isymbol;
5426 struct som_symbol *output_symbol = (struct som_symbol *) osymbol;
5427
5428 /* One day we may try to grok other private data. */
5429 if (ibfd->xvec->flavour != bfd_target_som_flavour
5430 || obfd->xvec->flavour != bfd_target_som_flavour)
5431 return false;
5432
5433 /* The only private information we need to copy is the argument relocation
5434 bits. */
5435 output_symbol->tc_data.ap.hppa_arg_reloc =
5436 input_symbol->tc_data.ap.hppa_arg_reloc;
5437
5438 return true;
5439 }
5440
5441 /* Copy any private info we understand from the input section
5442 to the output section. */
5443
5444 static bool
5445 som_bfd_copy_private_section_data (bfd *ibfd,
5446 asection *isection,
5447 bfd *obfd,
5448 asection *osection)
5449 {
5450 size_t amt;
5451
5452 /* One day we may try to grok other private data. */
5453 if (ibfd->xvec->flavour != bfd_target_som_flavour
5454 || obfd->xvec->flavour != bfd_target_som_flavour
5455 || (!som_is_space (isection) && !som_is_subspace (isection)))
5456 return true;
5457
5458 amt = sizeof (struct som_copyable_section_data_struct);
5459 som_section_data (osection)->copy_data = bfd_zalloc (obfd, amt);
5460 if (som_section_data (osection)->copy_data == NULL)
5461 return false;
5462
5463 memcpy (som_section_data (osection)->copy_data,
5464 som_section_data (isection)->copy_data,
5465 sizeof (struct som_copyable_section_data_struct));
5466
5467 /* Reparent if necessary. */
5468 if (som_section_data (osection)->copy_data->container)
5469 {
5470 if (som_section_data (osection)->copy_data->container->output_section)
5471 som_section_data (osection)->copy_data->container =
5472 som_section_data (osection)->copy_data->container->output_section;
5473 else
5474 {
5475 /* User has specified a subspace without its containing space. */
5476 _bfd_error_handler (_("%pB[%pA]: no output section for space %pA"),
5477 obfd, osection, som_section_data (osection)->copy_data->container);
5478 return false;
5479 }
5480 }
5481
5482 return true;
5483 }
5484
5485 /* Copy any private info we understand from the input bfd
5486 to the output bfd. */
5487
5488 static bool
5489 som_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
5490 {
5491 /* One day we may try to grok other private data. */
5492 if (ibfd->xvec->flavour != bfd_target_som_flavour
5493 || obfd->xvec->flavour != bfd_target_som_flavour)
5494 return true;
5495
5496 /* Allocate some memory to hold the data we need. */
5497 obj_som_exec_data (obfd) = bfd_zalloc (obfd, (bfd_size_type) sizeof (struct som_exec_data));
5498 if (obj_som_exec_data (obfd) == NULL)
5499 return false;
5500
5501 /* Now copy the data. */
5502 memcpy (obj_som_exec_data (obfd), obj_som_exec_data (ibfd),
5503 sizeof (struct som_exec_data));
5504
5505 return true;
5506 }
5507
5508 /* Display the SOM header. */
5509
5510 static bool
5511 som_bfd_print_private_bfd_data (bfd *abfd, void *farg)
5512 {
5513 struct som_exec_auxhdr *exec_header;
5514 struct som_aux_id* auxhdr;
5515 FILE *f;
5516
5517 f = (FILE *) farg;
5518
5519 exec_header = obj_som_exec_hdr (abfd);
5520 if (exec_header)
5521 {
5522 fprintf (f, _("\nExec Auxiliary Header\n"));
5523 fprintf (f, " flags ");
5524 auxhdr = &exec_header->som_auxhdr;
5525 if (auxhdr->mandatory)
5526 fprintf (f, "mandatory ");
5527 if (auxhdr->copy)
5528 fprintf (f, "copy ");
5529 if (auxhdr->append)
5530 fprintf (f, "append ");
5531 if (auxhdr->ignore)
5532 fprintf (f, "ignore ");
5533 fprintf (f, "\n");
5534 fprintf (f, " type %#x\n", auxhdr->type);
5535 fprintf (f, " length %#x\n", auxhdr->length);
5536
5537 /* Note that, depending on the HP-UX version, the following fields can be
5538 either ints, or longs. */
5539
5540 fprintf (f, " text size %#lx\n", (long) exec_header->exec_tsize);
5541 fprintf (f, " text memory offset %#lx\n", (long) exec_header->exec_tmem);
5542 fprintf (f, " text file offset %#lx\n", (long) exec_header->exec_tfile);
5543 fprintf (f, " data size %#lx\n", (long) exec_header->exec_dsize);
5544 fprintf (f, " data memory offset %#lx\n", (long) exec_header->exec_dmem);
5545 fprintf (f, " data file offset %#lx\n", (long) exec_header->exec_dfile);
5546 fprintf (f, " bss size %#lx\n", (long) exec_header->exec_bsize);
5547 fprintf (f, " entry point %#lx\n", (long) exec_header->exec_entry);
5548 fprintf (f, " loader flags %#lx\n", (long) exec_header->exec_flags);
5549 fprintf (f, " bss initializer %#lx\n", (long) exec_header->exec_bfill);
5550 }
5551
5552 return true;
5553 }
5554
5555 /* Set backend info for sections which can not be described
5556 in the BFD data structures. */
5557
5558 bool
5559 bfd_som_set_section_attributes (asection *section,
5560 int defined,
5561 int private,
5562 unsigned int sort_key,
5563 int spnum)
5564 {
5565 /* Allocate memory to hold the magic information. */
5566 if (som_section_data (section)->copy_data == NULL)
5567 {
5568 size_t amt = sizeof (struct som_copyable_section_data_struct);
5569
5570 som_section_data (section)->copy_data = bfd_zalloc (section->owner, amt);
5571 if (som_section_data (section)->copy_data == NULL)
5572 return false;
5573 }
5574 som_section_data (section)->copy_data->sort_key = sort_key;
5575 som_section_data (section)->copy_data->is_defined = defined;
5576 som_section_data (section)->copy_data->is_private = private;
5577 som_section_data (section)->copy_data->container = section;
5578 som_section_data (section)->copy_data->space_number = spnum;
5579 return true;
5580 }
5581
5582 /* Set backend info for subsections which can not be described
5583 in the BFD data structures. */
5584
5585 bool
5586 bfd_som_set_subsection_attributes (asection *section,
5587 asection *container,
5588 int access_ctr,
5589 unsigned int sort_key,
5590 int quadrant,
5591 int comdat,
5592 int common,
5593 int dup_common)
5594 {
5595 /* Allocate memory to hold the magic information. */
5596 if (som_section_data (section)->copy_data == NULL)
5597 {
5598 size_t amt = sizeof (struct som_copyable_section_data_struct);
5599
5600 som_section_data (section)->copy_data = bfd_zalloc (section->owner, amt);
5601 if (som_section_data (section)->copy_data == NULL)
5602 return false;
5603 }
5604 som_section_data (section)->copy_data->sort_key = sort_key;
5605 som_section_data (section)->copy_data->access_control_bits = access_ctr;
5606 som_section_data (section)->copy_data->quadrant = quadrant;
5607 som_section_data (section)->copy_data->container = container;
5608 som_section_data (section)->copy_data->is_comdat = comdat;
5609 som_section_data (section)->copy_data->is_common = common;
5610 som_section_data (section)->copy_data->dup_common = dup_common;
5611 return true;
5612 }
5613
5614 /* Set the full SOM symbol type. SOM needs far more symbol information
5615 than any other object file format I'm aware of. It is mandatory
5616 to be able to know if a symbol is an entry point, millicode, data,
5617 code, absolute, storage request, or procedure label. If you get
5618 the symbol type wrong your program will not link. */
5619
5620 void
5621 bfd_som_set_symbol_type (asymbol *symbol, unsigned int type)
5622 {
5623 som_symbol_data (symbol)->som_type = type;
5624 }
5625
5626 /* Attach an auxiliary header to the BFD backend so that it may be
5627 written into the object file. */
5628
5629 bool
5630 bfd_som_attach_aux_hdr (bfd *abfd, int type, char *string)
5631 {
5632 size_t amt;
5633
5634 if (type == VERSION_AUX_ID)
5635 {
5636 size_t len = strlen (string);
5637 int pad = 0;
5638
5639 if (len % 4)
5640 pad = (4 - (len % 4));
5641 amt = sizeof (struct som_string_auxhdr) + len + pad;
5642 obj_som_version_hdr (abfd) = bfd_zalloc (abfd, amt);
5643 if (!obj_som_version_hdr (abfd))
5644 return false;
5645 obj_som_version_hdr (abfd)->header_id.type = VERSION_AUX_ID;
5646 obj_som_version_hdr (abfd)->header_id.length = 4 + len + pad;
5647 obj_som_version_hdr (abfd)->string_length = len;
5648 memcpy (obj_som_version_hdr (abfd)->string, string, len);
5649 memset (obj_som_version_hdr (abfd)->string + len, 0, pad);
5650 }
5651 else if (type == COPYRIGHT_AUX_ID)
5652 {
5653 size_t len = strlen (string);
5654 int pad = 0;
5655
5656 if (len % 4)
5657 pad = (4 - (len % 4));
5658 amt = sizeof (struct som_string_auxhdr) + len + pad;
5659 obj_som_copyright_hdr (abfd) = bfd_zalloc (abfd, amt);
5660 if (!obj_som_copyright_hdr (abfd))
5661 return false;
5662 obj_som_copyright_hdr (abfd)->header_id.type = COPYRIGHT_AUX_ID;
5663 obj_som_copyright_hdr (abfd)->header_id.length = len + pad + 4;
5664 obj_som_copyright_hdr (abfd)->string_length = len;
5665 memcpy (obj_som_copyright_hdr (abfd)->string, string, len);
5666 memset (obj_som_copyright_hdr (abfd)->string + len, 0, pad);
5667 }
5668 return true;
5669 }
5670
5671 /* Attach a compilation unit header to the BFD backend so that it may be
5672 written into the object file. */
5673
5674 bool
5675 bfd_som_attach_compilation_unit (bfd *abfd,
5676 const char *name,
5677 const char *language_name,
5678 const char *product_id,
5679 const char *version_id)
5680 {
5681 struct som_compilation_unit *n;
5682
5683 n = (struct som_compilation_unit *) bfd_zalloc
5684 (abfd, (bfd_size_type) sizeof (*n));
5685 if (n == NULL)
5686 return false;
5687
5688 #define STRDUP(f) \
5689 if (f != NULL) \
5690 { \
5691 n->f.name = bfd_alloc (abfd, (bfd_size_type) strlen (f) + 1); \
5692 if (n->f.name == NULL) \
5693 return false; \
5694 strcpy (n->f.name, f); \
5695 }
5696
5697 STRDUP (name);
5698 STRDUP (language_name);
5699 STRDUP (product_id);
5700 STRDUP (version_id);
5701
5702 #undef STRDUP
5703
5704 obj_som_compilation_unit (abfd) = n;
5705
5706 return true;
5707 }
5708
5709 static bool
5710 som_get_section_contents (bfd *abfd,
5711 sec_ptr section,
5712 void *location,
5713 file_ptr offset,
5714 bfd_size_type count)
5715 {
5716 if (count == 0 || ((section->flags & SEC_HAS_CONTENTS) == 0))
5717 return true;
5718 if ((bfd_size_type) (offset+count) > section->size
5719 || bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0
5720 || bfd_bread (location, count, abfd) != count)
5721 return false; /* On error. */
5722 return true;
5723 }
5724
5725 static bool
5726 som_set_section_contents (bfd *abfd,
5727 sec_ptr section,
5728 const void *location,
5729 file_ptr offset,
5730 bfd_size_type count)
5731 {
5732 if (! abfd->output_has_begun)
5733 {
5734 /* Set up fixed parts of the file, space, and subspace headers.
5735 Notify the world that output has begun. */
5736 som_prep_headers (abfd);
5737 abfd->output_has_begun = true;
5738 /* Start writing the object file. This include all the string
5739 tables, fixup streams, and other portions of the object file. */
5740 som_begin_writing (abfd);
5741 }
5742
5743 /* Only write subspaces which have "real" contents (eg. the contents
5744 are not generated at run time by the OS). */
5745 if (!som_is_subspace (section)
5746 || ((section->flags & SEC_HAS_CONTENTS) == 0))
5747 return true;
5748
5749 /* Seek to the proper offset within the object file and write the
5750 data. */
5751 offset += som_section_data (section)->subspace_dict->file_loc_init_value;
5752 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
5753 return false;
5754
5755 if (bfd_bwrite (location, count, abfd) != count)
5756 return false;
5757 return true;
5758 }
5759
5760 static bool
5761 som_set_arch_mach (bfd *abfd,
5762 enum bfd_architecture arch,
5763 unsigned long machine)
5764 {
5765 /* Allow any architecture to be supported by the SOM backend. */
5766 return bfd_default_set_arch_mach (abfd, arch, machine);
5767 }
5768
5769 static bool
5770 som_find_nearest_line (bfd *abfd,
5771 asymbol **symbols,
5772 asection *section,
5773 bfd_vma offset,
5774 const char **filename_ptr,
5775 const char **functionname_ptr,
5776 unsigned int *line_ptr,
5777 unsigned int *discriminator_ptr)
5778 {
5779 bool found;
5780 asymbol *func;
5781 bfd_vma low_func;
5782 asymbol **p;
5783
5784 if (discriminator_ptr)
5785 *discriminator_ptr = 0;
5786
5787 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
5788 & found, filename_ptr,
5789 functionname_ptr, line_ptr,
5790 & somdata (abfd).line_info))
5791 return false;
5792
5793 if (found)
5794 return true;
5795
5796 if (symbols == NULL)
5797 return false;
5798
5799 /* Fallback: find function name from symbols table. */
5800 func = NULL;
5801 low_func = 0;
5802
5803 for (p = symbols; *p != NULL; p++)
5804 {
5805 som_symbol_type *q = (som_symbol_type *) *p;
5806
5807 if (q->som_type == SYMBOL_TYPE_ENTRY
5808 && q->symbol.section == section
5809 && q->symbol.value >= low_func
5810 && q->symbol.value <= offset)
5811 {
5812 func = (asymbol *) q;
5813 low_func = q->symbol.value;
5814 }
5815 }
5816
5817 if (func == NULL)
5818 return false;
5819
5820 *filename_ptr = NULL;
5821 *functionname_ptr = bfd_asymbol_name (func);
5822 *line_ptr = 0;
5823
5824 return true;
5825 }
5826
5827 static int
5828 som_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
5829 struct bfd_link_info *info ATTRIBUTE_UNUSED)
5830 {
5831 _bfd_error_handler (_("som_sizeof_headers unimplemented"));
5832 abort ();
5833 return 0;
5834 }
5835
5836 /* Return the single-character symbol type corresponding to
5837 SOM section S, or '?' for an unknown SOM section. */
5838
5839 static char
5840 som_section_type (const char *s)
5841 {
5842 const struct section_to_type *t;
5843
5844 for (t = &stt[0]; t->section; t++)
5845 if (!strcmp (s, t->section))
5846 return t->type;
5847 return '?';
5848 }
5849
5850 static int
5851 som_decode_symclass (asymbol *symbol)
5852 {
5853 char c;
5854
5855 /* If the symbol did not have a scope specified,
5856 then it will not have associated section. */
5857 if (symbol == NULL || symbol->section == NULL)
5858 return '?';
5859
5860 if (bfd_is_com_section (symbol->section))
5861 return 'C';
5862 if (bfd_is_und_section (symbol->section))
5863 {
5864 if (symbol->flags & BSF_WEAK)
5865 {
5866 /* If weak, determine if it's specifically an object
5867 or non-object weak. */
5868 if (symbol->flags & BSF_OBJECT)
5869 return 'v';
5870 else
5871 return 'w';
5872 }
5873 else
5874 return 'U';
5875 }
5876 if (bfd_is_ind_section (symbol->section))
5877 return 'I';
5878 if (symbol->flags & BSF_WEAK)
5879 {
5880 /* If weak, determine if it's specifically an object
5881 or non-object weak. */
5882 if (symbol->flags & BSF_OBJECT)
5883 return 'V';
5884 else
5885 return 'W';
5886 }
5887 if (!(symbol->flags & (BSF_GLOBAL | BSF_LOCAL)))
5888 return '?';
5889
5890 if (bfd_is_abs_section (symbol->section)
5891 || (som_symbol_data (symbol) != NULL
5892 && som_symbol_data (symbol)->som_type == SYMBOL_TYPE_ABSOLUTE))
5893 c = 'a';
5894 else if (symbol->section)
5895 c = som_section_type (symbol->section->name);
5896 else
5897 return '?';
5898 if (symbol->flags & BSF_GLOBAL)
5899 c = TOUPPER (c);
5900 return c;
5901 }
5902
5903 /* Return information about SOM symbol SYMBOL in RET. */
5904
5905 static void
5906 som_get_symbol_info (bfd *ignore_abfd ATTRIBUTE_UNUSED,
5907 asymbol *symbol,
5908 symbol_info *ret)
5909 {
5910 ret->type = som_decode_symclass (symbol);
5911 if (ret->type != 'U')
5912 ret->value = symbol->value + symbol->section->vma;
5913 else
5914 ret->value = 0;
5915 ret->name = symbol->name;
5916 }
5917
5918 /* Count the number of symbols in the archive symbol table. Necessary
5919 so that we can allocate space for all the carsyms at once. */
5920
5921 static bool
5922 som_bfd_count_ar_symbols (bfd *abfd,
5923 struct som_lst_header *lst_header,
5924 symindex *count)
5925 {
5926 unsigned int i;
5927 unsigned char *hash_table;
5928 size_t amt;
5929 file_ptr lst_filepos;
5930
5931 lst_filepos = bfd_tell (abfd) - sizeof (struct som_external_lst_header);
5932
5933 /* Read in the hash table. The hash table is an array of 32-bit
5934 file offsets which point to the hash chains. */
5935 if (_bfd_mul_overflow (lst_header->hash_size, 4, &amt))
5936 {
5937 bfd_set_error (bfd_error_file_too_big);
5938 return false;
5939 }
5940 hash_table = _bfd_malloc_and_read (abfd, amt, amt);
5941 if (hash_table == NULL && lst_header->hash_size != 0)
5942 goto error_return;
5943
5944 /* Don't forget to initialize the counter! */
5945 *count = 0;
5946
5947 /* Walk each chain counting the number of symbols found on that particular
5948 chain. */
5949 for (i = 0; i < lst_header->hash_size; i++)
5950 {
5951 struct som_external_lst_symbol_record ext_lst_symbol;
5952 unsigned int hash_val = bfd_getb32 (hash_table + 4 * i);
5953
5954 /* An empty chain has zero as it's file offset. */
5955 if (hash_val == 0)
5956 continue;
5957
5958 /* Seek to the first symbol in this hash chain. */
5959 if (bfd_seek (abfd, lst_filepos + hash_val, SEEK_SET) != 0)
5960 goto error_return;
5961
5962 /* Read in this symbol and update the counter. */
5963 amt = sizeof (ext_lst_symbol);
5964 if (bfd_bread ((void *) &ext_lst_symbol, amt, abfd) != amt)
5965 goto error_return;
5966
5967 (*count)++;
5968
5969 /* Now iterate through the rest of the symbols on this chain. */
5970 while (1)
5971 {
5972 unsigned int next_entry = bfd_getb32 (ext_lst_symbol.next_entry);
5973
5974 if (next_entry == 0)
5975 break;
5976
5977 /* Assume symbols on a chain are in increasing file offset
5978 order. Otherwise we can loop here with fuzzed input. */
5979 if (next_entry < hash_val + sizeof (ext_lst_symbol))
5980 {
5981 bfd_set_error (bfd_error_bad_value);
5982 goto error_return;
5983 }
5984 hash_val = next_entry;
5985
5986 /* Seek to the next symbol. */
5987 if (bfd_seek (abfd, lst_filepos + next_entry, SEEK_SET) != 0)
5988 goto error_return;
5989
5990 /* Read the symbol in and update the counter. */
5991 amt = sizeof (ext_lst_symbol);
5992 if (bfd_bread ((void *) &ext_lst_symbol, amt, abfd) != amt)
5993 goto error_return;
5994
5995 (*count)++;
5996 }
5997 }
5998 free (hash_table);
5999 return true;
6000
6001 error_return:
6002 free (hash_table);
6003 return false;
6004 }
6005
6006 /* Fill in the canonical archive symbols (SYMS) from the archive described
6007 by ABFD and LST_HEADER. */
6008
6009 static bool
6010 som_bfd_fill_in_ar_symbols (bfd *abfd,
6011 struct som_lst_header *lst_header,
6012 carsym **syms)
6013 {
6014 unsigned int i;
6015 carsym *set = syms[0];
6016 unsigned char *hash_table;
6017 struct som_external_som_entry *som_dict = NULL;
6018 size_t amt;
6019 file_ptr lst_filepos;
6020 unsigned int string_loc;
6021
6022 lst_filepos = bfd_tell (abfd) - sizeof (struct som_external_lst_header);
6023
6024 /* Read in the hash table. The has table is an array of 32bit file offsets
6025 which point to the hash chains. */
6026 if (_bfd_mul_overflow (lst_header->hash_size, 4, &amt))
6027 {
6028 bfd_set_error (bfd_error_file_too_big);
6029 return false;
6030 }
6031 hash_table = _bfd_malloc_and_read (abfd, amt, amt);
6032 if (hash_table == NULL && lst_header->hash_size != 0)
6033 goto error_return;
6034
6035 /* Seek to and read in the SOM dictionary. We will need this to fill
6036 in the carsym's filepos field. */
6037 if (bfd_seek (abfd, lst_filepos + lst_header->dir_loc, SEEK_SET) != 0)
6038 goto error_return;
6039
6040 if (_bfd_mul_overflow (lst_header->module_count,
6041 sizeof (struct som_external_som_entry), &amt))
6042 {
6043 bfd_set_error (bfd_error_file_too_big);
6044 goto error_return;
6045 }
6046 som_dict = (struct som_external_som_entry *)
6047 _bfd_malloc_and_read (abfd, amt, amt);
6048 if (som_dict == NULL && lst_header->module_count != 0)
6049 goto error_return;
6050
6051 string_loc = lst_header->string_loc;
6052
6053 /* Walk each chain filling in the carsyms as we go along. */
6054 for (i = 0; i < lst_header->hash_size; i++)
6055 {
6056 struct som_external_lst_symbol_record lst_symbol;
6057 unsigned int hash_val;
6058 size_t len;
6059 unsigned char ext_len[4];
6060 char *name;
6061 unsigned int ndx;
6062
6063 /* An empty chain has zero as it's file offset. */
6064 hash_val = bfd_getb32 (hash_table + 4 * i);
6065 if (hash_val == 0)
6066 continue;
6067
6068 /* Seek to and read the first symbol on the chain. */
6069 if (bfd_seek (abfd, lst_filepos + hash_val, SEEK_SET) != 0)
6070 goto error_return;
6071
6072 amt = sizeof (lst_symbol);
6073 if (bfd_bread ((void *) &lst_symbol, amt, abfd) != amt)
6074 goto error_return;
6075
6076 /* Get the name of the symbol, first get the length which is stored
6077 as a 32bit integer just before the symbol.
6078
6079 One might ask why we don't just read in the entire string table
6080 and index into it. Well, according to the SOM ABI the string
6081 index can point *anywhere* in the archive to save space, so just
6082 using the string table would not be safe. */
6083 if (bfd_seek (abfd, (lst_filepos + string_loc
6084 + bfd_getb32 (lst_symbol.name) - 4), SEEK_SET) != 0)
6085 goto error_return;
6086
6087 if (bfd_bread (&ext_len, (bfd_size_type) 4, abfd) != 4)
6088 goto error_return;
6089 len = bfd_getb32 (ext_len);
6090
6091 /* Allocate space for the name and null terminate it too. */
6092 if (len == (size_t) -1)
6093 {
6094 bfd_set_error (bfd_error_no_memory);
6095 goto error_return;
6096 }
6097 name = (char *) _bfd_alloc_and_read (abfd, len + 1, len);
6098 if (!name)
6099 goto error_return;
6100 name[len] = 0;
6101 set->name = name;
6102
6103 /* Fill in the file offset. Note that the "location" field points
6104 to the SOM itself, not the ar_hdr in front of it. */
6105 ndx = bfd_getb32 (lst_symbol.som_index);
6106 if (ndx >= lst_header->module_count)
6107 {
6108 bfd_set_error (bfd_error_bad_value);
6109 goto error_return;
6110 }
6111 set->file_offset
6112 = bfd_getb32 (som_dict[ndx].location) - sizeof (struct ar_hdr);
6113
6114 /* Go to the next symbol. */
6115 set++;
6116
6117 /* Iterate through the rest of the chain. */
6118 while (1)
6119 {
6120 unsigned int next_entry = bfd_getb32 (lst_symbol.next_entry);
6121
6122 if (next_entry == 0)
6123 break;
6124
6125 /* Seek to the next symbol and read it in. */
6126 if (bfd_seek (abfd, lst_filepos + next_entry, SEEK_SET) != 0)
6127 goto error_return;
6128
6129 amt = sizeof (lst_symbol);
6130 if (bfd_bread ((void *) &lst_symbol, amt, abfd) != amt)
6131 goto error_return;
6132
6133 /* Seek to the name length & string and read them in. */
6134 if (bfd_seek (abfd, lst_filepos + string_loc
6135 + bfd_getb32 (lst_symbol.name) - 4, SEEK_SET) != 0)
6136 goto error_return;
6137
6138 if (bfd_bread (&ext_len, (bfd_size_type) 4, abfd) != 4)
6139 goto error_return;
6140 len = bfd_getb32 (ext_len);
6141
6142 /* Allocate space for the name and null terminate it too. */
6143 if (len == (size_t) -1)
6144 {
6145 bfd_set_error (bfd_error_no_memory);
6146 goto error_return;
6147 }
6148 name = (char *) _bfd_alloc_and_read (abfd, len + 1, len);
6149 if (!name)
6150 goto error_return;
6151 name[len] = 0;
6152 set->name = name;
6153
6154 /* Fill in the file offset. Note that the "location" field points
6155 to the SOM itself, not the ar_hdr in front of it. */
6156 ndx = bfd_getb32 (lst_symbol.som_index);
6157 if (ndx >= lst_header->module_count)
6158 {
6159 bfd_set_error (bfd_error_bad_value);
6160 goto error_return;
6161 }
6162 set->file_offset
6163 = bfd_getb32 (som_dict[ndx].location) - sizeof (struct ar_hdr);
6164
6165 /* Go on to the next symbol. */
6166 set++;
6167 }
6168 }
6169 /* If we haven't died by now, then we successfully read the entire
6170 archive symbol table. */
6171 free (hash_table);
6172 free (som_dict);
6173 return true;
6174
6175 error_return:
6176 free (hash_table);
6177 free (som_dict);
6178 return false;
6179 }
6180
6181 /* Read in the LST from the archive. */
6182
6183 static bool
6184 som_slurp_armap (bfd *abfd)
6185 {
6186 struct som_external_lst_header ext_lst_header;
6187 struct som_lst_header lst_header;
6188 struct ar_hdr ar_header;
6189 unsigned int parsed_size;
6190 struct artdata *ardata = bfd_ardata (abfd);
6191 char nextname[17];
6192 size_t amt = 16;
6193 int i = bfd_bread ((void *) nextname, amt, abfd);
6194
6195 /* Special cases. */
6196 if (i == 0)
6197 return true;
6198 if (i != 16)
6199 return false;
6200
6201 if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0)
6202 return false;
6203
6204 /* For archives without .o files there is no symbol table. */
6205 if (! startswith (nextname, "/ "))
6206 {
6207 abfd->has_armap = false;
6208 return true;
6209 }
6210
6211 /* Read in and sanity check the archive header. */
6212 amt = sizeof (struct ar_hdr);
6213 if (bfd_bread ((void *) &ar_header, amt, abfd) != amt)
6214 return false;
6215
6216 if (strncmp (ar_header.ar_fmag, ARFMAG, 2))
6217 {
6218 bfd_set_error (bfd_error_malformed_archive);
6219 return false;
6220 }
6221
6222 /* How big is the archive symbol table entry? */
6223 errno = 0;
6224 parsed_size = strtol (ar_header.ar_size, NULL, 10);
6225 if (errno != 0)
6226 {
6227 bfd_set_error (bfd_error_malformed_archive);
6228 return false;
6229 }
6230
6231 /* Save off the file offset of the first real user data. */
6232 ardata->first_file_filepos = bfd_tell (abfd) + parsed_size;
6233
6234 /* Read in the library symbol table. We'll make heavy use of this
6235 in just a minute. */
6236 amt = sizeof (struct som_external_lst_header);
6237 if (bfd_bread ((void *) &ext_lst_header, amt, abfd) != amt)
6238 return false;
6239
6240 som_swap_lst_header_in (&ext_lst_header, &lst_header);
6241
6242 /* Sanity check. */
6243 if (lst_header.a_magic != LIBMAGIC)
6244 {
6245 bfd_set_error (bfd_error_malformed_archive);
6246 return false;
6247 }
6248
6249 /* Count the number of symbols in the library symbol table. */
6250 if (! som_bfd_count_ar_symbols (abfd, &lst_header, &ardata->symdef_count))
6251 return false;
6252
6253 /* Get back to the start of the library symbol table. */
6254 if (bfd_seek (abfd, (ardata->first_file_filepos - parsed_size
6255 + sizeof (struct som_external_lst_header)),
6256 SEEK_SET) != 0)
6257 return false;
6258
6259 /* Initialize the cache and allocate space for the library symbols. */
6260 ardata->cache = 0;
6261 if (_bfd_mul_overflow (ardata->symdef_count, sizeof (carsym), &amt))
6262 {
6263 bfd_set_error (bfd_error_file_too_big);
6264 return false;
6265 }
6266 ardata->symdefs = bfd_alloc (abfd, amt);
6267 if (!ardata->symdefs)
6268 return false;
6269
6270 /* Now fill in the canonical archive symbols. */
6271 if (! som_bfd_fill_in_ar_symbols (abfd, &lst_header, &ardata->symdefs))
6272 return false;
6273
6274 /* Seek back to the "first" file in the archive. Note the "first"
6275 file may be the extended name table. */
6276 if (bfd_seek (abfd, ardata->first_file_filepos, SEEK_SET) != 0)
6277 return false;
6278
6279 /* Notify the generic archive code that we have a symbol map. */
6280 abfd->has_armap = true;
6281 return true;
6282 }
6283
6284 /* Begin preparing to write a SOM library symbol table.
6285
6286 As part of the prep work we need to determine the number of symbols
6287 and the size of the associated string section. */
6288
6289 static bool
6290 som_bfd_prep_for_ar_write (bfd *abfd,
6291 unsigned int *num_syms,
6292 unsigned int *stringsize)
6293 {
6294 bfd *curr_bfd = abfd->archive_head;
6295
6296 /* Some initialization. */
6297 *num_syms = 0;
6298 *stringsize = 0;
6299
6300 /* Iterate over each BFD within this archive. */
6301 while (curr_bfd != NULL)
6302 {
6303 unsigned int curr_count, i;
6304 som_symbol_type *sym;
6305
6306 /* Don't bother for non-SOM objects. */
6307 if (curr_bfd->format != bfd_object
6308 || curr_bfd->xvec->flavour != bfd_target_som_flavour)
6309 {
6310 curr_bfd = curr_bfd->archive_next;
6311 continue;
6312 }
6313
6314 /* Make sure the symbol table has been read, then snag a pointer
6315 to it. It's a little slimey to grab the symbols via obj_som_symtab,
6316 but doing so avoids allocating lots of extra memory. */
6317 if (! som_slurp_symbol_table (curr_bfd))
6318 return false;
6319
6320 sym = obj_som_symtab (curr_bfd);
6321 curr_count = bfd_get_symcount (curr_bfd);
6322
6323 /* Examine each symbol to determine if it belongs in the
6324 library symbol table. */
6325 for (i = 0; i < curr_count; i++, sym++)
6326 {
6327 struct som_misc_symbol_info info;
6328
6329 /* Derive SOM information from the BFD symbol. */
6330 som_bfd_derive_misc_symbol_info (curr_bfd, &sym->symbol, &info);
6331
6332 /* Should we include this symbol? */
6333 if (info.symbol_type == ST_NULL
6334 || info.symbol_type == ST_SYM_EXT
6335 || info.symbol_type == ST_ARG_EXT)
6336 continue;
6337
6338 /* Only global symbols and unsatisfied commons. */
6339 if (info.symbol_scope != SS_UNIVERSAL
6340 && info.symbol_type != ST_STORAGE)
6341 continue;
6342
6343 /* Do no include undefined symbols. */
6344 if (bfd_is_und_section (sym->symbol.section))
6345 continue;
6346
6347 /* Bump the various counters, being careful to honor
6348 alignment considerations in the string table. */
6349 (*num_syms)++;
6350 *stringsize += strlen (sym->symbol.name) + 5;
6351 while (*stringsize % 4)
6352 (*stringsize)++;
6353 }
6354
6355 curr_bfd = curr_bfd->archive_next;
6356 }
6357 return true;
6358 }
6359
6360 /* Hash a symbol name based on the hashing algorithm presented in the
6361 SOM ABI. */
6362
6363 static unsigned int
6364 som_bfd_ar_symbol_hash (asymbol *symbol)
6365 {
6366 unsigned int len = strlen (symbol->name);
6367
6368 /* Names with length 1 are special. */
6369 if (len == 1)
6370 return 0x1000100 | (symbol->name[0] << 16) | symbol->name[0];
6371
6372 return ((len & 0x7f) << 24) | (symbol->name[1] << 16)
6373 | (symbol->name[len - 2] << 8) | symbol->name[len - 1];
6374 }
6375
6376 /* Do the bulk of the work required to write the SOM library
6377 symbol table. */
6378
6379 static bool
6380 som_bfd_ar_write_symbol_stuff (bfd *abfd,
6381 unsigned int nsyms,
6382 unsigned int string_size,
6383 struct som_external_lst_header lst,
6384 unsigned elength)
6385 {
6386 char *strings = NULL, *p;
6387 struct som_external_lst_symbol_record *lst_syms = NULL, *curr_lst_sym;
6388 bfd *curr_bfd;
6389 unsigned char *hash_table = NULL;
6390 struct som_external_som_entry *som_dict = NULL;
6391 struct som_external_lst_symbol_record **last_hash_entry = NULL;
6392 unsigned int curr_som_offset, som_index = 0;
6393 size_t amt;
6394 unsigned int module_count;
6395 unsigned int hash_size;
6396
6397 hash_size = bfd_getb32 (lst.hash_size);
6398 if (_bfd_mul_overflow (hash_size, 4, &amt))
6399 {
6400 bfd_set_error (bfd_error_no_memory);
6401 return false;
6402 }
6403 hash_table = bfd_zmalloc (amt);
6404 if (hash_table == NULL && hash_size != 0)
6405 goto error_return;
6406
6407 module_count = bfd_getb32 (lst.module_count);
6408 if (_bfd_mul_overflow (module_count,
6409 sizeof (struct som_external_som_entry), &amt))
6410 {
6411 bfd_set_error (bfd_error_no_memory);
6412 goto error_return;
6413 }
6414 som_dict = bfd_zmalloc (amt);
6415 if (som_dict == NULL && module_count != 0)
6416 goto error_return;
6417
6418 if (_bfd_mul_overflow (hash_size,
6419 sizeof (struct som_external_lst_symbol_record *),
6420 &amt))
6421 {
6422 bfd_set_error (bfd_error_no_memory);
6423 goto error_return;
6424 }
6425 last_hash_entry = bfd_zmalloc (amt);
6426 if (last_hash_entry == NULL && hash_size != 0)
6427 goto error_return;
6428
6429 /* Symbols have som_index fields, so we have to keep track of the
6430 index of each SOM in the archive.
6431
6432 The SOM dictionary has (among other things) the absolute file
6433 position for the SOM which a particular dictionary entry
6434 describes. We have to compute that information as we iterate
6435 through the SOMs/symbols. */
6436 som_index = 0;
6437
6438 /* We add in the size of the archive header twice as the location
6439 in the SOM dictionary is the actual offset of the SOM, not the
6440 archive header before the SOM. */
6441 curr_som_offset = 8 + 2 * sizeof (struct ar_hdr) + bfd_getb32 (lst.file_end);
6442
6443 /* Make room for the archive header and the contents of the
6444 extended string table. Note that elength includes the size
6445 of the archive header for the extended name table! */
6446 if (elength)
6447 curr_som_offset += elength;
6448
6449 /* Make sure we're properly aligned. */
6450 curr_som_offset = (curr_som_offset + 0x1) & ~0x1;
6451
6452 /* FIXME should be done with buffers just like everything else... */
6453 if (_bfd_mul_overflow (nsyms,
6454 sizeof (struct som_external_lst_symbol_record), &amt))
6455 {
6456 bfd_set_error (bfd_error_no_memory);
6457 goto error_return;
6458 }
6459 lst_syms = bfd_malloc (amt);
6460 if (lst_syms == NULL && nsyms != 0)
6461 goto error_return;
6462 strings = bfd_malloc (string_size);
6463 if (strings == NULL && string_size != 0)
6464 goto error_return;
6465
6466 p = strings;
6467 curr_lst_sym = lst_syms;
6468
6469 curr_bfd = abfd->archive_head;
6470 while (curr_bfd != NULL)
6471 {
6472 unsigned int curr_count, i;
6473 som_symbol_type *sym;
6474
6475 /* Don't bother for non-SOM objects. */
6476 if (curr_bfd->format != bfd_object
6477 || curr_bfd->xvec->flavour != bfd_target_som_flavour)
6478 {
6479 curr_bfd = curr_bfd->archive_next;
6480 continue;
6481 }
6482
6483 /* Make sure the symbol table has been read, then snag a pointer
6484 to it. It's a little slimey to grab the symbols via obj_som_symtab,
6485 but doing so avoids allocating lots of extra memory. */
6486 if (! som_slurp_symbol_table (curr_bfd))
6487 goto error_return;
6488
6489 sym = obj_som_symtab (curr_bfd);
6490 curr_count = bfd_get_symcount (curr_bfd);
6491
6492 for (i = 0; i < curr_count; i++, sym++)
6493 {
6494 struct som_misc_symbol_info info;
6495 struct som_external_lst_symbol_record *last;
6496 unsigned int symbol_pos;
6497 unsigned int slen;
6498 unsigned int symbol_key;
6499 unsigned int flags;
6500
6501 /* Derive SOM information from the BFD symbol. */
6502 som_bfd_derive_misc_symbol_info (curr_bfd, &sym->symbol, &info);
6503
6504 /* Should we include this symbol? */
6505 if (info.symbol_type == ST_NULL
6506 || info.symbol_type == ST_SYM_EXT
6507 || info.symbol_type == ST_ARG_EXT)
6508 continue;
6509
6510 /* Only global symbols and unsatisfied commons. */
6511 if (info.symbol_scope != SS_UNIVERSAL
6512 && info.symbol_type != ST_STORAGE)
6513 continue;
6514
6515 /* Do no include undefined symbols. */
6516 if (bfd_is_und_section (sym->symbol.section))
6517 continue;
6518
6519 /* If this is the first symbol from this SOM, then update
6520 the SOM dictionary too. */
6521 if (bfd_getb32 (som_dict[som_index].location) == 0)
6522 {
6523 bfd_putb32 (curr_som_offset, som_dict[som_index].location);
6524 bfd_putb32 (arelt_size (curr_bfd), som_dict[som_index].length);
6525 }
6526
6527 symbol_key = som_bfd_ar_symbol_hash (&sym->symbol);
6528
6529 /* Fill in the lst symbol record. */
6530 flags = 0;
6531 if (info.secondary_def)
6532 flags |= LST_SYMBOL_SECONDARY_DEF;
6533 flags |= info.symbol_type << LST_SYMBOL_SYMBOL_TYPE_SH;
6534 flags |= info.symbol_scope << LST_SYMBOL_SYMBOL_SCOPE_SH;
6535 if (bfd_is_com_section (sym->symbol.section))
6536 flags |= LST_SYMBOL_IS_COMMON;
6537 if (info.dup_common)
6538 flags |= LST_SYMBOL_DUP_COMMON;
6539 flags |= 3 << LST_SYMBOL_XLEAST_SH;
6540 flags |= info.arg_reloc << LST_SYMBOL_ARG_RELOC_SH;
6541 bfd_putb32 (flags, curr_lst_sym->flags);
6542 bfd_putb32 (p - strings + 4, curr_lst_sym->name);
6543 bfd_putb32 (0, curr_lst_sym->qualifier_name);
6544 bfd_putb32 (info.symbol_info, curr_lst_sym->symbol_info);
6545 bfd_putb32 (info.symbol_value | info.priv_level,
6546 curr_lst_sym->symbol_value);
6547 bfd_putb32 (0, curr_lst_sym->symbol_descriptor);
6548 curr_lst_sym->reserved = 0;
6549 bfd_putb32 (som_index, curr_lst_sym->som_index);
6550 bfd_putb32 (symbol_key, curr_lst_sym->symbol_key);
6551 bfd_putb32 (0, curr_lst_sym->next_entry);
6552
6553 /* Insert into the hash table. */
6554 symbol_pos =
6555 (curr_lst_sym - lst_syms)
6556 * sizeof (struct som_external_lst_symbol_record)
6557 + hash_size * 4
6558 + module_count * sizeof (struct som_external_som_entry)
6559 + sizeof (struct som_external_lst_header);
6560 last = last_hash_entry[symbol_key % hash_size];
6561 if (last != NULL)
6562 {
6563 /* There is already something at the head of this hash chain,
6564 so tack this symbol onto the end of the chain. */
6565 bfd_putb32 (symbol_pos, last->next_entry);
6566 }
6567 else
6568 /* First entry in this hash chain. */
6569 bfd_putb32 (symbol_pos, hash_table + 4 * (symbol_key % hash_size));
6570
6571 /* Keep track of the last symbol we added to this chain so we can
6572 easily update its next_entry pointer. */
6573 last_hash_entry[symbol_key % hash_size] = curr_lst_sym;
6574
6575 /* Update the string table. */
6576 slen = strlen (sym->symbol.name);
6577 bfd_put_32 (abfd, slen, p);
6578 p += 4;
6579 slen++; /* Nul terminator. */
6580 memcpy (p, sym->symbol.name, slen);
6581 p += slen;
6582 while (slen % 4)
6583 {
6584 bfd_put_8 (abfd, 0, p);
6585 p++;
6586 slen++;
6587 }
6588 BFD_ASSERT (p <= strings + string_size);
6589
6590 /* Head to the next symbol. */
6591 curr_lst_sym++;
6592 }
6593
6594 /* Keep track of where each SOM will finally reside; then look
6595 at the next BFD. */
6596 curr_som_offset += arelt_size (curr_bfd) + sizeof (struct ar_hdr);
6597
6598 /* A particular object in the archive may have an odd length; the
6599 linker requires objects begin on an even boundary. So round
6600 up the current offset as necessary. */
6601 curr_som_offset = (curr_som_offset + 0x1) &~ (unsigned) 1;
6602 curr_bfd = curr_bfd->archive_next;
6603 som_index++;
6604 }
6605
6606 /* Now scribble out the hash table. */
6607 amt = (size_t) hash_size * 4;
6608 if (bfd_bwrite ((void *) hash_table, amt, abfd) != amt)
6609 goto error_return;
6610
6611 /* Then the SOM dictionary. */
6612 amt = (size_t) module_count * sizeof (struct som_external_som_entry);
6613 if (bfd_bwrite ((void *) som_dict, amt, abfd) != amt)
6614 goto error_return;
6615
6616 /* The library symbols. */
6617 amt = (size_t) nsyms * sizeof (struct som_external_lst_symbol_record);
6618 if (bfd_bwrite ((void *) lst_syms, amt, abfd) != amt)
6619 goto error_return;
6620
6621 /* And finally the strings. */
6622 amt = string_size;
6623 if (bfd_bwrite ((void *) strings, amt, abfd) != amt)
6624 goto error_return;
6625
6626 free (hash_table);
6627 free (som_dict);
6628 free (last_hash_entry);
6629 free (lst_syms);
6630 free (strings);
6631 return true;
6632
6633 error_return:
6634 free (hash_table);
6635 free (som_dict);
6636 free (last_hash_entry);
6637 free (lst_syms);
6638 free (strings);
6639
6640 return false;
6641 }
6642
6643 /* Write out the LST for the archive.
6644
6645 You'll never believe this is really how armaps are handled in SOM... */
6646
6647 static bool
6648 som_write_armap (bfd *abfd,
6649 unsigned int elength,
6650 struct orl *map ATTRIBUTE_UNUSED,
6651 unsigned int orl_count ATTRIBUTE_UNUSED,
6652 int stridx ATTRIBUTE_UNUSED)
6653 {
6654 bfd *curr_bfd;
6655 struct stat statbuf;
6656 unsigned int i, lst_size, nsyms, stringsize;
6657 struct ar_hdr hdr;
6658 struct som_external_lst_header lst;
6659 unsigned char *p;
6660 size_t amt;
6661 unsigned int csum;
6662 unsigned int module_count;
6663
6664 /* We'll use this for the archive's date and mode later. */
6665 if (stat (bfd_get_filename (abfd), &statbuf) != 0)
6666 {
6667 bfd_set_error (bfd_error_system_call);
6668 return false;
6669 }
6670 /* Fudge factor. */
6671 bfd_ardata (abfd)->armap_timestamp = statbuf.st_mtime + 60;
6672
6673 /* Account for the lst header first. */
6674 lst_size = sizeof (struct som_external_lst_header);
6675
6676 /* Start building the LST header. */
6677 /* FIXME: Do we need to examine each element to determine the
6678 largest id number? */
6679 bfd_putb16 (CPU_PA_RISC1_0, &lst.system_id);
6680 bfd_putb16 (LIBMAGIC, &lst.a_magic);
6681 bfd_putb32 (VERSION_ID, &lst.version_id);
6682 bfd_putb32 (0, &lst.file_time.secs);
6683 bfd_putb32 (0, &lst.file_time.nanosecs);
6684
6685 bfd_putb32 (lst_size, &lst.hash_loc);
6686 bfd_putb32 (SOM_LST_HASH_SIZE, &lst.hash_size);
6687
6688 /* Hash table is a SOM_LST_HASH_SIZE 32bit offsets. */
6689 lst_size += 4 * SOM_LST_HASH_SIZE;
6690
6691 /* We need to count the number of SOMs in this archive. */
6692 curr_bfd = abfd->archive_head;
6693 module_count = 0;
6694 while (curr_bfd != NULL)
6695 {
6696 /* Only true SOM objects count. */
6697 if (curr_bfd->format == bfd_object
6698 && curr_bfd->xvec->flavour == bfd_target_som_flavour)
6699 module_count++;
6700 curr_bfd = curr_bfd->archive_next;
6701 }
6702 bfd_putb32 (module_count, &lst.module_count);
6703 bfd_putb32 (module_count, &lst.module_limit);
6704 bfd_putb32 (lst_size, &lst.dir_loc);
6705 lst_size += sizeof (struct som_external_som_entry) * module_count;
6706
6707 /* We don't support import/export tables, auxiliary headers,
6708 or free lists yet. Make the linker work a little harder
6709 to make our life easier. */
6710
6711 bfd_putb32 (0, &lst.export_loc);
6712 bfd_putb32 (0, &lst.export_count);
6713 bfd_putb32 (0, &lst.import_loc);
6714 bfd_putb32 (0, &lst.aux_loc);
6715 bfd_putb32 (0, &lst.aux_size);
6716
6717 /* Count how many symbols we will have on the hash chains and the
6718 size of the associated string table. */
6719 if (! som_bfd_prep_for_ar_write (abfd, &nsyms, &stringsize))
6720 return false;
6721
6722 lst_size += sizeof (struct som_external_lst_symbol_record) * nsyms;
6723
6724 /* For the string table. One day we might actually use this info
6725 to avoid small seeks/reads when reading archives. */
6726 bfd_putb32 (lst_size, &lst.string_loc);
6727 bfd_putb32 (stringsize, &lst.string_size);
6728 lst_size += stringsize;
6729
6730 /* SOM ABI says this must be zero. */
6731 bfd_putb32 (0, &lst.free_list);
6732 bfd_putb32 (lst_size, &lst.file_end);
6733
6734 /* Compute the checksum. Must happen after the entire lst header
6735 has filled in. */
6736 p = (unsigned char *) &lst;
6737 csum = 0;
6738 for (i = 0; i < sizeof (struct som_external_lst_header) - sizeof (int);
6739 i += 4)
6740 csum ^= bfd_getb32 (&p[i]);
6741 bfd_putb32 (csum, &lst.checksum);
6742
6743 sprintf (hdr.ar_name, "/ ");
6744 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%-12ld",
6745 bfd_ardata (abfd)->armap_timestamp);
6746 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld",
6747 statbuf.st_uid);
6748 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld",
6749 statbuf.st_gid);
6750 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-8o",
6751 (unsigned int)statbuf.st_mode);
6752 _bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10d",
6753 (int) lst_size);
6754 hdr.ar_fmag[0] = '`';
6755 hdr.ar_fmag[1] = '\012';
6756
6757 /* Turn any nulls into spaces. */
6758 for (i = 0; i < sizeof (struct ar_hdr); i++)
6759 if (((char *) (&hdr))[i] == '\0')
6760 (((char *) (&hdr))[i]) = ' ';
6761
6762 /* Scribble out the ar header. */
6763 amt = sizeof (struct ar_hdr);
6764 if (bfd_bwrite ((void *) &hdr, amt, abfd) != amt)
6765 return false;
6766
6767 /* Now scribble out the lst header. */
6768 amt = sizeof (struct som_external_lst_header);
6769 if (bfd_bwrite ((void *) &lst, amt, abfd) != amt)
6770 return false;
6771
6772 /* Build and write the armap. */
6773 if (!som_bfd_ar_write_symbol_stuff (abfd, nsyms, stringsize, lst, elength))
6774 return false;
6775
6776 /* Done. */
6777 return true;
6778 }
6779
6780 /* Free all information we have cached for this BFD. We can always
6781 read it again later if we need it. */
6782
6783 static bool
6784 som_bfd_free_cached_info (bfd *abfd)
6785 {
6786 if (bfd_get_format (abfd) == bfd_object)
6787 {
6788 asection *o;
6789
6790 #define FREE(x) do { free (x); x = NULL; } while (0)
6791 /* Free the native string and symbol tables. */
6792 FREE (obj_som_symtab (abfd));
6793 FREE (obj_som_stringtab (abfd));
6794 for (o = abfd->sections; o != NULL; o = o->next)
6795 {
6796 /* Free the native relocations. */
6797 o->reloc_count = (unsigned) -1;
6798 FREE (som_section_data (o)->reloc_stream);
6799 /* Do not free the generic relocations as they are objalloc'ed. */
6800 }
6801 #undef FREE
6802 }
6803
6804 return _bfd_generic_close_and_cleanup (abfd);
6805 }
6806
6807 /* End of miscellaneous support functions. */
6808
6809 /* Linker support functions. */
6810
6811 static bool
6812 som_bfd_link_split_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
6813 {
6814 return som_is_subspace (sec) && sec->size > 240000;
6815 }
6816
6817 #define som_find_line _bfd_nosymbols_find_line
6818 #define som_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string
6819 #define som_close_and_cleanup som_bfd_free_cached_info
6820 #define som_read_ar_hdr _bfd_generic_read_ar_hdr
6821 #define som_write_ar_hdr _bfd_generic_write_ar_hdr
6822 #define som_openr_next_archived_file bfd_generic_openr_next_archived_file
6823 #define som_get_elt_at_index _bfd_generic_get_elt_at_index
6824 #define som_generic_stat_arch_elt bfd_generic_stat_arch_elt
6825 #define som_truncate_arname bfd_bsd_truncate_arname
6826 #define som_slurp_extended_name_table _bfd_slurp_extended_name_table
6827 #define som_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table
6828 #define som_update_armap_timestamp _bfd_bool_bfd_true
6829 #define som_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false
6830 #define som_get_lineno _bfd_nosymbols_get_lineno
6831 #define som_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
6832 #define som_read_minisymbols _bfd_generic_read_minisymbols
6833 #define som_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
6834 #define som_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
6835 #define som_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
6836 #define som_bfd_relax_section bfd_generic_relax_section
6837 #define som_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
6838 #define som_bfd_link_add_symbols _bfd_generic_link_add_symbols
6839 #define som_bfd_link_just_syms _bfd_generic_link_just_syms
6840 #define som_bfd_copy_link_hash_symbol_type \
6841 _bfd_generic_copy_link_hash_symbol_type
6842 #define som_bfd_final_link _bfd_generic_final_link
6843 #define som_bfd_gc_sections bfd_generic_gc_sections
6844 #define som_bfd_lookup_section_flags bfd_generic_lookup_section_flags
6845 #define som_bfd_merge_sections bfd_generic_merge_sections
6846 #define som_bfd_is_group_section bfd_generic_is_group_section
6847 #define som_bfd_group_name bfd_generic_group_name
6848 #define som_bfd_discard_group bfd_generic_discard_group
6849 #define som_section_already_linked _bfd_generic_section_already_linked
6850 #define som_bfd_define_common_symbol bfd_generic_define_common_symbol
6851 #define som_bfd_link_hide_symbol _bfd_generic_link_hide_symbol
6852 #define som_bfd_define_start_stop bfd_generic_define_start_stop
6853 #define som_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
6854 #define som_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
6855 #define som_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
6856 #define som_find_inliner_info _bfd_nosymbols_find_inliner_info
6857 #define som_bfd_link_check_relocs _bfd_generic_link_check_relocs
6858 #define som_set_reloc _bfd_generic_set_reloc
6859
6860 const bfd_target hppa_som_vec =
6861 {
6862 "som", /* Name. */
6863 bfd_target_som_flavour,
6864 BFD_ENDIAN_BIG, /* Target byte order. */
6865 BFD_ENDIAN_BIG, /* Target headers byte order. */
6866 (HAS_RELOC | EXEC_P | /* Object flags. */
6867 HAS_LINENO | HAS_DEBUG |
6868 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | DYNAMIC),
6869 (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS | SEC_LINK_ONCE
6870 | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */
6871
6872 /* Leading_symbol_char: is the first char of a user symbol
6873 predictable, and if so what is it. */
6874 0,
6875 '/', /* AR_pad_char. */
6876 14, /* AR_max_namelen. */
6877 0, /* match priority. */
6878 TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
6879 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
6880 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
6881 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */
6882 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
6883 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
6884 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */
6885 {_bfd_dummy_target,
6886 som_object_p, /* bfd_check_format. */
6887 bfd_generic_archive_p,
6888 _bfd_dummy_target
6889 },
6890 {
6891 _bfd_bool_bfd_false_error,
6892 som_mkobject,
6893 _bfd_generic_mkarchive,
6894 _bfd_bool_bfd_false_error
6895 },
6896 {
6897 _bfd_bool_bfd_false_error,
6898 som_write_object_contents,
6899 _bfd_write_archive_contents,
6900 _bfd_bool_bfd_false_error,
6901 },
6902 #undef som
6903
6904 BFD_JUMP_TABLE_GENERIC (som),
6905 BFD_JUMP_TABLE_COPY (som),
6906 BFD_JUMP_TABLE_CORE (_bfd_nocore),
6907 BFD_JUMP_TABLE_ARCHIVE (som),
6908 BFD_JUMP_TABLE_SYMBOLS (som),
6909 BFD_JUMP_TABLE_RELOCS (som),
6910 BFD_JUMP_TABLE_WRITE (som),
6911 BFD_JUMP_TABLE_LINK (som),
6912 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
6913
6914 NULL,
6915
6916 NULL
6917 };
6918
GDB Binutils - Deliverables
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