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PR 14072
[thirdparty/binutils-gdb.git] / bfd / som.c
1 /* bfd back-end for HP PA-RISC SOM objects.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
4 2012 Free Software Foundation, Inc.
5
6 Contributed by the Center for Software Science at the
7 University of Utah.
8
9 This file is part of BFD, the Binary File Descriptor library.
10
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
24 02110-1301, USA. */
25
26 #include "sysdep.h"
27 #include "alloca-conf.h"
28 #include "bfd.h"
29
30 #include "libbfd.h"
31 #include "som.h"
32 #include "safe-ctype.h"
33 #include "som/reloc.h"
34 #include "aout/ar.h"
35
36 static bfd_reloc_status_type hppa_som_reloc
37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
38 static bfd_boolean som_mkobject (bfd *);
39 static bfd_boolean som_is_space (asection *);
40 static bfd_boolean som_is_subspace (asection *);
41 static int compare_subspaces (const void *, const void *);
42 static unsigned long som_compute_checksum (struct som_external_header *);
43 static bfd_boolean som_build_and_write_symbol_table (bfd *);
44 static unsigned int som_slurp_symbol_table (bfd *);
45
46 /* Magic not defined in standard HP-UX header files until 8.0. */
47
48 #ifndef CPU_PA_RISC1_0
49 #define CPU_PA_RISC1_0 0x20B
50 #endif /* CPU_PA_RISC1_0 */
51
52 #ifndef CPU_PA_RISC1_1
53 #define CPU_PA_RISC1_1 0x210
54 #endif /* CPU_PA_RISC1_1 */
55
56 #ifndef CPU_PA_RISC2_0
57 #define CPU_PA_RISC2_0 0x214
58 #endif /* CPU_PA_RISC2_0 */
59
60 #ifndef _PA_RISC1_0_ID
61 #define _PA_RISC1_0_ID CPU_PA_RISC1_0
62 #endif /* _PA_RISC1_0_ID */
63
64 #ifndef _PA_RISC1_1_ID
65 #define _PA_RISC1_1_ID CPU_PA_RISC1_1
66 #endif /* _PA_RISC1_1_ID */
67
68 #ifndef _PA_RISC2_0_ID
69 #define _PA_RISC2_0_ID CPU_PA_RISC2_0
70 #endif /* _PA_RISC2_0_ID */
71
72 #ifndef _PA_RISC_MAXID
73 #define _PA_RISC_MAXID 0x2FF
74 #endif /* _PA_RISC_MAXID */
75
76 #ifndef _PA_RISC_ID
77 #define _PA_RISC_ID(__m_num) \
78 (((__m_num) == _PA_RISC1_0_ID) || \
79 ((__m_num) >= _PA_RISC1_1_ID && (__m_num) <= _PA_RISC_MAXID))
80 #endif /* _PA_RISC_ID */
81
82 /* HIUX in it's infinite stupidity changed the names for several "well
83 known" constants. Work around such braindamage. Try the HPUX version
84 first, then the HIUX version, and finally provide a default. */
85 #ifdef HPUX_AUX_ID
86 #define EXEC_AUX_ID HPUX_AUX_ID
87 #endif
88
89 #if !defined (EXEC_AUX_ID) && defined (HIUX_AUX_ID)
90 #define EXEC_AUX_ID HIUX_AUX_ID
91 #endif
92
93 #ifndef EXEC_AUX_ID
94 #define EXEC_AUX_ID 0
95 #endif
96
97 /* Size (in chars) of the temporary buffers used during fixup and string
98 table writes. */
99
100 #define SOM_TMP_BUFSIZE 8192
101
102 /* Size of the hash table in archives. */
103 #define SOM_LST_HASH_SIZE 31
104
105 /* Max number of SOMs to be found in an archive. */
106 #define SOM_LST_MODULE_LIMIT 1024
107
108 /* Generic alignment macro. */
109 #define SOM_ALIGN(val, alignment) \
110 (((val) + (alignment) - 1) &~ ((unsigned long) (alignment) - 1))
111
112 /* SOM allows any one of the four previous relocations to be reused
113 with a "R_PREV_FIXUP" relocation entry. Since R_PREV_FIXUP
114 relocations are always a single byte, using a R_PREV_FIXUP instead
115 of some multi-byte relocation makes object files smaller.
116
117 Note one side effect of using a R_PREV_FIXUP is the relocation that
118 is being repeated moves to the front of the queue. */
119 struct reloc_queue
120 {
121 unsigned char *reloc;
122 unsigned int size;
123 } reloc_queue[4];
124
125 /* This fully describes the symbol types which may be attached to
126 an EXPORT or IMPORT directive. Only SOM uses this formation
127 (ELF has no need for it). */
128 typedef enum
129 {
130 SYMBOL_TYPE_UNKNOWN,
131 SYMBOL_TYPE_ABSOLUTE,
132 SYMBOL_TYPE_CODE,
133 SYMBOL_TYPE_DATA,
134 SYMBOL_TYPE_ENTRY,
135 SYMBOL_TYPE_MILLICODE,
136 SYMBOL_TYPE_PLABEL,
137 SYMBOL_TYPE_PRI_PROG,
138 SYMBOL_TYPE_SEC_PROG,
139 } pa_symbol_type;
140
141 struct section_to_type
142 {
143 const char *section;
144 char type;
145 };
146
147 /* Assorted symbol information that needs to be derived from the BFD symbol
148 and/or the BFD backend private symbol data. */
149 struct som_misc_symbol_info
150 {
151 unsigned int symbol_type;
152 unsigned int symbol_scope;
153 unsigned int arg_reloc;
154 unsigned int symbol_info;
155 unsigned int symbol_value;
156 unsigned int priv_level;
157 unsigned int secondary_def;
158 unsigned int is_comdat;
159 unsigned int is_common;
160 unsigned int dup_common;
161 };
162
163 /* Map SOM section names to POSIX/BSD single-character symbol types.
164
165 This table includes all the standard subspaces as defined in the
166 current "PRO ABI for PA-RISC Systems", $UNWIND$ which for
167 some reason was left out, and sections specific to embedded stabs. */
168
169 static const struct section_to_type stt[] =
170 {
171 {"$TEXT$", 't'},
172 {"$SHLIB_INFO$", 't'},
173 {"$MILLICODE$", 't'},
174 {"$LIT$", 't'},
175 {"$CODE$", 't'},
176 {"$UNWIND_START$", 't'},
177 {"$UNWIND$", 't'},
178 {"$PRIVATE$", 'd'},
179 {"$PLT$", 'd'},
180 {"$SHLIB_DATA$", 'd'},
181 {"$DATA$", 'd'},
182 {"$SHORTDATA$", 'g'},
183 {"$DLT$", 'd'},
184 {"$GLOBAL$", 'g'},
185 {"$SHORTBSS$", 's'},
186 {"$BSS$", 'b'},
187 {"$GDB_STRINGS$", 'N'},
188 {"$GDB_SYMBOLS$", 'N'},
189 {0, 0}
190 };
191
192 /* About the relocation formatting table...
193
194 There are 256 entries in the table, one for each possible
195 relocation opcode available in SOM. We index the table by
196 the relocation opcode. The names and operations are those
197 defined by a.out_800 (4).
198
199 Right now this table is only used to count and perform minimal
200 processing on relocation streams so that they can be internalized
201 into BFD and symbolically printed by utilities. To make actual use
202 of them would be much more difficult, BFD's concept of relocations
203 is far too simple to handle SOM relocations. The basic assumption
204 that a relocation can be completely processed independent of other
205 relocations before an object file is written is invalid for SOM.
206
207 The SOM relocations are meant to be processed as a stream, they
208 specify copying of data from the input section to the output section
209 while possibly modifying the data in some manner. They also can
210 specify that a variable number of zeros or uninitialized data be
211 inserted on in the output segment at the current offset. Some
212 relocations specify that some previous relocation be re-applied at
213 the current location in the input/output sections. And finally a number
214 of relocations have effects on other sections (R_ENTRY, R_EXIT,
215 R_UNWIND_AUX and a variety of others). There isn't even enough room
216 in the BFD relocation data structure to store enough information to
217 perform all the relocations.
218
219 Each entry in the table has three fields.
220
221 The first entry is an index into this "class" of relocations. This
222 index can then be used as a variable within the relocation itself.
223
224 The second field is a format string which actually controls processing
225 of the relocation. It uses a simple postfix machine to do calculations
226 based on variables/constants found in the string and the relocation
227 stream.
228
229 The third field specifys whether or not this relocation may use
230 a constant (V) from the previous R_DATA_OVERRIDE rather than a constant
231 stored in the instruction.
232
233 Variables:
234
235 L = input space byte count
236 D = index into class of relocations
237 M = output space byte count
238 N = statement number (unused?)
239 O = stack operation
240 R = parameter relocation bits
241 S = symbol index
242 T = first 32 bits of stack unwind information
243 U = second 32 bits of stack unwind information
244 V = a literal constant (usually used in the next relocation)
245 P = a previous relocation
246
247 Lower case letters (starting with 'b') refer to following
248 bytes in the relocation stream. 'b' is the next 1 byte,
249 c is the next 2 bytes, d is the next 3 bytes, etc...
250 This is the variable part of the relocation entries that
251 makes our life a living hell.
252
253 numerical constants are also used in the format string. Note
254 the constants are represented in decimal.
255
256 '+', "*" and "=" represents the obvious postfix operators.
257 '<' represents a left shift.
258
259 Stack Operations:
260
261 Parameter Relocation Bits:
262
263 Unwind Entries:
264
265 Previous Relocations: The index field represents which in the queue
266 of 4 previous fixups should be re-applied.
267
268 Literal Constants: These are generally used to represent addend
269 parts of relocations when these constants are not stored in the
270 fields of the instructions themselves. For example the instruction
271 addil foo-$global$-0x1234 would use an override for "0x1234" rather
272 than storing it into the addil itself. */
273
274 struct fixup_format
275 {
276 int D;
277 const char *format;
278 };
279
280 static const struct fixup_format som_fixup_formats[256] =
281 {
282 /* R_NO_RELOCATION. */
283 { 0, "LD1+4*=" }, /* 0x00 */
284 { 1, "LD1+4*=" }, /* 0x01 */
285 { 2, "LD1+4*=" }, /* 0x02 */
286 { 3, "LD1+4*=" }, /* 0x03 */
287 { 4, "LD1+4*=" }, /* 0x04 */
288 { 5, "LD1+4*=" }, /* 0x05 */
289 { 6, "LD1+4*=" }, /* 0x06 */
290 { 7, "LD1+4*=" }, /* 0x07 */
291 { 8, "LD1+4*=" }, /* 0x08 */
292 { 9, "LD1+4*=" }, /* 0x09 */
293 { 10, "LD1+4*=" }, /* 0x0a */
294 { 11, "LD1+4*=" }, /* 0x0b */
295 { 12, "LD1+4*=" }, /* 0x0c */
296 { 13, "LD1+4*=" }, /* 0x0d */
297 { 14, "LD1+4*=" }, /* 0x0e */
298 { 15, "LD1+4*=" }, /* 0x0f */
299 { 16, "LD1+4*=" }, /* 0x10 */
300 { 17, "LD1+4*=" }, /* 0x11 */
301 { 18, "LD1+4*=" }, /* 0x12 */
302 { 19, "LD1+4*=" }, /* 0x13 */
303 { 20, "LD1+4*=" }, /* 0x14 */
304 { 21, "LD1+4*=" }, /* 0x15 */
305 { 22, "LD1+4*=" }, /* 0x16 */
306 { 23, "LD1+4*=" }, /* 0x17 */
307 { 0, "LD8<b+1+4*=" }, /* 0x18 */
308 { 1, "LD8<b+1+4*=" }, /* 0x19 */
309 { 2, "LD8<b+1+4*=" }, /* 0x1a */
310 { 3, "LD8<b+1+4*=" }, /* 0x1b */
311 { 0, "LD16<c+1+4*=" }, /* 0x1c */
312 { 1, "LD16<c+1+4*=" }, /* 0x1d */
313 { 2, "LD16<c+1+4*=" }, /* 0x1e */
314 { 0, "Ld1+=" }, /* 0x1f */
315 /* R_ZEROES. */
316 { 0, "Lb1+4*=" }, /* 0x20 */
317 { 1, "Ld1+=" }, /* 0x21 */
318 /* R_UNINIT. */
319 { 0, "Lb1+4*=" }, /* 0x22 */
320 { 1, "Ld1+=" }, /* 0x23 */
321 /* R_RELOCATION. */
322 { 0, "L4=" }, /* 0x24 */
323 /* R_DATA_ONE_SYMBOL. */
324 { 0, "L4=Sb=" }, /* 0x25 */
325 { 1, "L4=Sd=" }, /* 0x26 */
326 /* R_DATA_PLABEL. */
327 { 0, "L4=Sb=" }, /* 0x27 */
328 { 1, "L4=Sd=" }, /* 0x28 */
329 /* R_SPACE_REF. */
330 { 0, "L4=" }, /* 0x29 */
331 /* R_REPEATED_INIT. */
332 { 0, "L4=Mb1+4*=" }, /* 0x2a */
333 { 1, "Lb4*=Mb1+L*=" }, /* 0x2b */
334 { 2, "Lb4*=Md1+4*=" }, /* 0x2c */
335 { 3, "Ld1+=Me1+=" }, /* 0x2d */
336 { 0, "" }, /* 0x2e */
337 { 0, "" }, /* 0x2f */
338 /* R_PCREL_CALL. */
339 { 0, "L4=RD=Sb=" }, /* 0x30 */
340 { 1, "L4=RD=Sb=" }, /* 0x31 */
341 { 2, "L4=RD=Sb=" }, /* 0x32 */
342 { 3, "L4=RD=Sb=" }, /* 0x33 */
343 { 4, "L4=RD=Sb=" }, /* 0x34 */
344 { 5, "L4=RD=Sb=" }, /* 0x35 */
345 { 6, "L4=RD=Sb=" }, /* 0x36 */
346 { 7, "L4=RD=Sb=" }, /* 0x37 */
347 { 8, "L4=RD=Sb=" }, /* 0x38 */
348 { 9, "L4=RD=Sb=" }, /* 0x39 */
349 { 0, "L4=RD8<b+=Sb=" }, /* 0x3a */
350 { 1, "L4=RD8<b+=Sb=" }, /* 0x3b */
351 { 0, "L4=RD8<b+=Sd=" }, /* 0x3c */
352 { 1, "L4=RD8<b+=Sd=" }, /* 0x3d */
353 /* R_SHORT_PCREL_MODE. */
354 { 0, "" }, /* 0x3e */
355 /* R_LONG_PCREL_MODE. */
356 { 0, "" }, /* 0x3f */
357 /* R_ABS_CALL. */
358 { 0, "L4=RD=Sb=" }, /* 0x40 */
359 { 1, "L4=RD=Sb=" }, /* 0x41 */
360 { 2, "L4=RD=Sb=" }, /* 0x42 */
361 { 3, "L4=RD=Sb=" }, /* 0x43 */
362 { 4, "L4=RD=Sb=" }, /* 0x44 */
363 { 5, "L4=RD=Sb=" }, /* 0x45 */
364 { 6, "L4=RD=Sb=" }, /* 0x46 */
365 { 7, "L4=RD=Sb=" }, /* 0x47 */
366 { 8, "L4=RD=Sb=" }, /* 0x48 */
367 { 9, "L4=RD=Sb=" }, /* 0x49 */
368 { 0, "L4=RD8<b+=Sb=" }, /* 0x4a */
369 { 1, "L4=RD8<b+=Sb=" }, /* 0x4b */
370 { 0, "L4=RD8<b+=Sd=" }, /* 0x4c */
371 { 1, "L4=RD8<b+=Sd=" }, /* 0x4d */
372 /* R_RESERVED. */
373 { 0, "" }, /* 0x4e */
374 { 0, "" }, /* 0x4f */
375 /* R_DP_RELATIVE. */
376 { 0, "L4=SD=" }, /* 0x50 */
377 { 1, "L4=SD=" }, /* 0x51 */
378 { 2, "L4=SD=" }, /* 0x52 */
379 { 3, "L4=SD=" }, /* 0x53 */
380 { 4, "L4=SD=" }, /* 0x54 */
381 { 5, "L4=SD=" }, /* 0x55 */
382 { 6, "L4=SD=" }, /* 0x56 */
383 { 7, "L4=SD=" }, /* 0x57 */
384 { 8, "L4=SD=" }, /* 0x58 */
385 { 9, "L4=SD=" }, /* 0x59 */
386 { 10, "L4=SD=" }, /* 0x5a */
387 { 11, "L4=SD=" }, /* 0x5b */
388 { 12, "L4=SD=" }, /* 0x5c */
389 { 13, "L4=SD=" }, /* 0x5d */
390 { 14, "L4=SD=" }, /* 0x5e */
391 { 15, "L4=SD=" }, /* 0x5f */
392 { 16, "L4=SD=" }, /* 0x60 */
393 { 17, "L4=SD=" }, /* 0x61 */
394 { 18, "L4=SD=" }, /* 0x62 */
395 { 19, "L4=SD=" }, /* 0x63 */
396 { 20, "L4=SD=" }, /* 0x64 */
397 { 21, "L4=SD=" }, /* 0x65 */
398 { 22, "L4=SD=" }, /* 0x66 */
399 { 23, "L4=SD=" }, /* 0x67 */
400 { 24, "L4=SD=" }, /* 0x68 */
401 { 25, "L4=SD=" }, /* 0x69 */
402 { 26, "L4=SD=" }, /* 0x6a */
403 { 27, "L4=SD=" }, /* 0x6b */
404 { 28, "L4=SD=" }, /* 0x6c */
405 { 29, "L4=SD=" }, /* 0x6d */
406 { 30, "L4=SD=" }, /* 0x6e */
407 { 31, "L4=SD=" }, /* 0x6f */
408 { 32, "L4=Sb=" }, /* 0x70 */
409 { 33, "L4=Sd=" }, /* 0x71 */
410 /* R_DATA_GPREL. */
411 { 0, "L4=Sd=" }, /* 0x72 */
412 /* R_RESERVED. */
413 { 0, "" }, /* 0x73 */
414 { 0, "" }, /* 0x74 */
415 { 0, "" }, /* 0x75 */
416 { 0, "" }, /* 0x76 */
417 { 0, "" }, /* 0x77 */
418 /* R_DLT_REL. */
419 { 0, "L4=Sb=" }, /* 0x78 */
420 { 1, "L4=Sd=" }, /* 0x79 */
421 /* R_RESERVED. */
422 { 0, "" }, /* 0x7a */
423 { 0, "" }, /* 0x7b */
424 { 0, "" }, /* 0x7c */
425 { 0, "" }, /* 0x7d */
426 { 0, "" }, /* 0x7e */
427 { 0, "" }, /* 0x7f */
428 /* R_CODE_ONE_SYMBOL. */
429 { 0, "L4=SD=" }, /* 0x80 */
430 { 1, "L4=SD=" }, /* 0x81 */
431 { 2, "L4=SD=" }, /* 0x82 */
432 { 3, "L4=SD=" }, /* 0x83 */
433 { 4, "L4=SD=" }, /* 0x84 */
434 { 5, "L4=SD=" }, /* 0x85 */
435 { 6, "L4=SD=" }, /* 0x86 */
436 { 7, "L4=SD=" }, /* 0x87 */
437 { 8, "L4=SD=" }, /* 0x88 */
438 { 9, "L4=SD=" }, /* 0x89 */
439 { 10, "L4=SD=" }, /* 0x8q */
440 { 11, "L4=SD=" }, /* 0x8b */
441 { 12, "L4=SD=" }, /* 0x8c */
442 { 13, "L4=SD=" }, /* 0x8d */
443 { 14, "L4=SD=" }, /* 0x8e */
444 { 15, "L4=SD=" }, /* 0x8f */
445 { 16, "L4=SD=" }, /* 0x90 */
446 { 17, "L4=SD=" }, /* 0x91 */
447 { 18, "L4=SD=" }, /* 0x92 */
448 { 19, "L4=SD=" }, /* 0x93 */
449 { 20, "L4=SD=" }, /* 0x94 */
450 { 21, "L4=SD=" }, /* 0x95 */
451 { 22, "L4=SD=" }, /* 0x96 */
452 { 23, "L4=SD=" }, /* 0x97 */
453 { 24, "L4=SD=" }, /* 0x98 */
454 { 25, "L4=SD=" }, /* 0x99 */
455 { 26, "L4=SD=" }, /* 0x9a */
456 { 27, "L4=SD=" }, /* 0x9b */
457 { 28, "L4=SD=" }, /* 0x9c */
458 { 29, "L4=SD=" }, /* 0x9d */
459 { 30, "L4=SD=" }, /* 0x9e */
460 { 31, "L4=SD=" }, /* 0x9f */
461 { 32, "L4=Sb=" }, /* 0xa0 */
462 { 33, "L4=Sd=" }, /* 0xa1 */
463 /* R_RESERVED. */
464 { 0, "" }, /* 0xa2 */
465 { 0, "" }, /* 0xa3 */
466 { 0, "" }, /* 0xa4 */
467 { 0, "" }, /* 0xa5 */
468 { 0, "" }, /* 0xa6 */
469 { 0, "" }, /* 0xa7 */
470 { 0, "" }, /* 0xa8 */
471 { 0, "" }, /* 0xa9 */
472 { 0, "" }, /* 0xaa */
473 { 0, "" }, /* 0xab */
474 { 0, "" }, /* 0xac */
475 { 0, "" }, /* 0xad */
476 /* R_MILLI_REL. */
477 { 0, "L4=Sb=" }, /* 0xae */
478 { 1, "L4=Sd=" }, /* 0xaf */
479 /* R_CODE_PLABEL. */
480 { 0, "L4=Sb=" }, /* 0xb0 */
481 { 1, "L4=Sd=" }, /* 0xb1 */
482 /* R_BREAKPOINT. */
483 { 0, "L4=" }, /* 0xb2 */
484 /* R_ENTRY. */
485 { 0, "Te=Ue=" }, /* 0xb3 */
486 { 1, "Uf=" }, /* 0xb4 */
487 /* R_ALT_ENTRY. */
488 { 0, "" }, /* 0xb5 */
489 /* R_EXIT. */
490 { 0, "" }, /* 0xb6 */
491 /* R_BEGIN_TRY. */
492 { 0, "" }, /* 0xb7 */
493 /* R_END_TRY. */
494 { 0, "R0=" }, /* 0xb8 */
495 { 1, "Rb4*=" }, /* 0xb9 */
496 { 2, "Rd4*=" }, /* 0xba */
497 /* R_BEGIN_BRTAB. */
498 { 0, "" }, /* 0xbb */
499 /* R_END_BRTAB. */
500 { 0, "" }, /* 0xbc */
501 /* R_STATEMENT. */
502 { 0, "Nb=" }, /* 0xbd */
503 { 1, "Nc=" }, /* 0xbe */
504 { 2, "Nd=" }, /* 0xbf */
505 /* R_DATA_EXPR. */
506 { 0, "L4=" }, /* 0xc0 */
507 /* R_CODE_EXPR. */
508 { 0, "L4=" }, /* 0xc1 */
509 /* R_FSEL. */
510 { 0, "" }, /* 0xc2 */
511 /* R_LSEL. */
512 { 0, "" }, /* 0xc3 */
513 /* R_RSEL. */
514 { 0, "" }, /* 0xc4 */
515 /* R_N_MODE. */
516 { 0, "" }, /* 0xc5 */
517 /* R_S_MODE. */
518 { 0, "" }, /* 0xc6 */
519 /* R_D_MODE. */
520 { 0, "" }, /* 0xc7 */
521 /* R_R_MODE. */
522 { 0, "" }, /* 0xc8 */
523 /* R_DATA_OVERRIDE. */
524 { 0, "V0=" }, /* 0xc9 */
525 { 1, "Vb=" }, /* 0xca */
526 { 2, "Vc=" }, /* 0xcb */
527 { 3, "Vd=" }, /* 0xcc */
528 { 4, "Ve=" }, /* 0xcd */
529 /* R_TRANSLATED. */
530 { 0, "" }, /* 0xce */
531 /* R_AUX_UNWIND. */
532 { 0,"Sd=Ve=Ee=" }, /* 0xcf */
533 /* R_COMP1. */
534 { 0, "Ob=" }, /* 0xd0 */
535 /* R_COMP2. */
536 { 0, "Ob=Sd=" }, /* 0xd1 */
537 /* R_COMP3. */
538 { 0, "Ob=Ve=" }, /* 0xd2 */
539 /* R_PREV_FIXUP. */
540 { 0, "P" }, /* 0xd3 */
541 { 1, "P" }, /* 0xd4 */
542 { 2, "P" }, /* 0xd5 */
543 { 3, "P" }, /* 0xd6 */
544 /* R_SEC_STMT. */
545 { 0, "" }, /* 0xd7 */
546 /* R_N0SEL. */
547 { 0, "" }, /* 0xd8 */
548 /* R_N1SEL. */
549 { 0, "" }, /* 0xd9 */
550 /* R_LINETAB. */
551 { 0, "Eb=Sd=Ve=" }, /* 0xda */
552 /* R_LINETAB_ESC. */
553 { 0, "Eb=Mb=" }, /* 0xdb */
554 /* R_LTP_OVERRIDE. */
555 { 0, "" }, /* 0xdc */
556 /* R_COMMENT. */
557 { 0, "Ob=Vf=" }, /* 0xdd */
558 /* R_RESERVED. */
559 { 0, "" }, /* 0xde */
560 { 0, "" }, /* 0xdf */
561 { 0, "" }, /* 0xe0 */
562 { 0, "" }, /* 0xe1 */
563 { 0, "" }, /* 0xe2 */
564 { 0, "" }, /* 0xe3 */
565 { 0, "" }, /* 0xe4 */
566 { 0, "" }, /* 0xe5 */
567 { 0, "" }, /* 0xe6 */
568 { 0, "" }, /* 0xe7 */
569 { 0, "" }, /* 0xe8 */
570 { 0, "" }, /* 0xe9 */
571 { 0, "" }, /* 0xea */
572 { 0, "" }, /* 0xeb */
573 { 0, "" }, /* 0xec */
574 { 0, "" }, /* 0xed */
575 { 0, "" }, /* 0xee */
576 { 0, "" }, /* 0xef */
577 { 0, "" }, /* 0xf0 */
578 { 0, "" }, /* 0xf1 */
579 { 0, "" }, /* 0xf2 */
580 { 0, "" }, /* 0xf3 */
581 { 0, "" }, /* 0xf4 */
582 { 0, "" }, /* 0xf5 */
583 { 0, "" }, /* 0xf6 */
584 { 0, "" }, /* 0xf7 */
585 { 0, "" }, /* 0xf8 */
586 { 0, "" }, /* 0xf9 */
587 { 0, "" }, /* 0xfa */
588 { 0, "" }, /* 0xfb */
589 { 0, "" }, /* 0xfc */
590 { 0, "" }, /* 0xfd */
591 { 0, "" }, /* 0xfe */
592 { 0, "" }, /* 0xff */
593 };
594
595 static const int comp1_opcodes[] =
596 {
597 0x00,
598 0x40,
599 0x41,
600 0x42,
601 0x43,
602 0x44,
603 0x45,
604 0x46,
605 0x47,
606 0x48,
607 0x49,
608 0x4a,
609 0x4b,
610 0x60,
611 0x80,
612 0xa0,
613 0xc0,
614 -1
615 };
616
617 static const int comp2_opcodes[] =
618 {
619 0x00,
620 0x80,
621 0x82,
622 0xc0,
623 -1
624 };
625
626 static const int comp3_opcodes[] =
627 {
628 0x00,
629 0x02,
630 -1
631 };
632
633 /* These apparently are not in older versions of hpux reloc.h (hpux7). */
634
635 /* And these first appeared in hpux10. */
636 #ifndef R_SHORT_PCREL_MODE
637 #define NO_PCREL_MODES
638 #define R_SHORT_PCREL_MODE 0x3e
639 #endif
640
641 #define SOM_HOWTO(TYPE, NAME) \
642 HOWTO(TYPE, 0, 0, 32, FALSE, 0, 0, hppa_som_reloc, NAME, FALSE, 0, 0, FALSE)
643
644 static reloc_howto_type som_hppa_howto_table[] =
645 {
646 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
647 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
648 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
649 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
650 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
651 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
652 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
653 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
654 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
655 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
656 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
657 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
658 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
659 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
660 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
661 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
662 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
663 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
664 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
665 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
666 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
667 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
668 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
669 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
670 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
671 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
672 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
673 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
674 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
675 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
676 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
677 SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"),
678 SOM_HOWTO (R_ZEROES, "R_ZEROES"),
679 SOM_HOWTO (R_ZEROES, "R_ZEROES"),
680 SOM_HOWTO (R_UNINIT, "R_UNINIT"),
681 SOM_HOWTO (R_UNINIT, "R_UNINIT"),
682 SOM_HOWTO (R_RELOCATION, "R_RELOCATION"),
683 SOM_HOWTO (R_DATA_ONE_SYMBOL, "R_DATA_ONE_SYMBOL"),
684 SOM_HOWTO (R_DATA_ONE_SYMBOL, "R_DATA_ONE_SYMBOL"),
685 SOM_HOWTO (R_DATA_PLABEL, "R_DATA_PLABEL"),
686 SOM_HOWTO (R_DATA_PLABEL, "R_DATA_PLABEL"),
687 SOM_HOWTO (R_SPACE_REF, "R_SPACE_REF"),
688 SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"),
689 SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"),
690 SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"),
691 SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"),
692 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
693 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
694 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
695 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
696 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
697 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
698 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
699 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
700 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
701 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
702 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
703 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
704 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
705 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
706 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
707 SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"),
708 SOM_HOWTO (R_SHORT_PCREL_MODE, "R_SHORT_PCREL_MODE"),
709 SOM_HOWTO (R_LONG_PCREL_MODE, "R_LONG_PCREL_MODE"),
710 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
711 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
712 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
713 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
714 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
715 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
716 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
717 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
718 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
719 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
720 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
721 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
722 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
723 SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"),
724 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
725 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
726 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
727 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
728 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
729 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
730 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
731 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
732 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
733 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
734 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
735 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
736 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
737 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
738 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
739 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
740 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
741 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
742 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
743 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
744 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
745 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
746 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
747 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
748 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
749 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
750 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
751 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
752 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
753 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
754 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
755 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
756 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
757 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
758 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
759 SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"),
760 SOM_HOWTO (R_DATA_GPREL, "R_DATA_GPREL"),
761 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
762 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
763 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
764 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
765 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
766 SOM_HOWTO (R_DLT_REL, "R_DLT_REL"),
767 SOM_HOWTO (R_DLT_REL, "R_DLT_REL"),
768 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
769 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
770 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
771 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
772 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
773 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
774 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
775 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
776 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
777 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
778 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
779 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
780 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
781 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
782 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
783 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
784 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
785 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
786 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
787 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
788 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
789 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
790 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
791 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
792 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
793 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
794 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
795 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
796 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
797 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
798 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
799 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
800 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
801 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
802 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
803 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
804 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
805 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
806 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
807 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
808 SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"),
809 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
810 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
811 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
812 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
813 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
814 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
815 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
816 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
817 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
818 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
819 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
820 SOM_HOWTO (R_MILLI_REL, "R_MILLI_REL"),
821 SOM_HOWTO (R_MILLI_REL, "R_MILLI_REL"),
822 SOM_HOWTO (R_CODE_PLABEL, "R_CODE_PLABEL"),
823 SOM_HOWTO (R_CODE_PLABEL, "R_CODE_PLABEL"),
824 SOM_HOWTO (R_BREAKPOINT, "R_BREAKPOINT"),
825 SOM_HOWTO (R_ENTRY, "R_ENTRY"),
826 SOM_HOWTO (R_ENTRY, "R_ENTRY"),
827 SOM_HOWTO (R_ALT_ENTRY, "R_ALT_ENTRY"),
828 SOM_HOWTO (R_EXIT, "R_EXIT"),
829 SOM_HOWTO (R_BEGIN_TRY, "R_BEGIN_TRY"),
830 SOM_HOWTO (R_END_TRY, "R_END_TRY"),
831 SOM_HOWTO (R_END_TRY, "R_END_TRY"),
832 SOM_HOWTO (R_END_TRY, "R_END_TRY"),
833 SOM_HOWTO (R_BEGIN_BRTAB, "R_BEGIN_BRTAB"),
834 SOM_HOWTO (R_END_BRTAB, "R_END_BRTAB"),
835 SOM_HOWTO (R_STATEMENT, "R_STATEMENT"),
836 SOM_HOWTO (R_STATEMENT, "R_STATEMENT"),
837 SOM_HOWTO (R_STATEMENT, "R_STATEMENT"),
838 SOM_HOWTO (R_DATA_EXPR, "R_DATA_EXPR"),
839 SOM_HOWTO (R_CODE_EXPR, "R_CODE_EXPR"),
840 SOM_HOWTO (R_FSEL, "R_FSEL"),
841 SOM_HOWTO (R_LSEL, "R_LSEL"),
842 SOM_HOWTO (R_RSEL, "R_RSEL"),
843 SOM_HOWTO (R_N_MODE, "R_N_MODE"),
844 SOM_HOWTO (R_S_MODE, "R_S_MODE"),
845 SOM_HOWTO (R_D_MODE, "R_D_MODE"),
846 SOM_HOWTO (R_R_MODE, "R_R_MODE"),
847 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"),
848 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"),
849 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"),
850 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"),
851 SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"),
852 SOM_HOWTO (R_TRANSLATED, "R_TRANSLATED"),
853 SOM_HOWTO (R_AUX_UNWIND, "R_AUX_UNWIND"),
854 SOM_HOWTO (R_COMP1, "R_COMP1"),
855 SOM_HOWTO (R_COMP2, "R_COMP2"),
856 SOM_HOWTO (R_COMP3, "R_COMP3"),
857 SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"),
858 SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"),
859 SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"),
860 SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"),
861 SOM_HOWTO (R_SEC_STMT, "R_SEC_STMT"),
862 SOM_HOWTO (R_N0SEL, "R_N0SEL"),
863 SOM_HOWTO (R_N1SEL, "R_N1SEL"),
864 SOM_HOWTO (R_LINETAB, "R_LINETAB"),
865 SOM_HOWTO (R_LINETAB_ESC, "R_LINETAB_ESC"),
866 SOM_HOWTO (R_LTP_OVERRIDE, "R_LTP_OVERRIDE"),
867 SOM_HOWTO (R_COMMENT, "R_COMMENT"),
868 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
869 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
870 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
871 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
872 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
873 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
874 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
875 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
876 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
877 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
878 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
879 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
880 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
881 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
882 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
883 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
884 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
885 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
886 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
887 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
888 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
889 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
890 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
891 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
892 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
893 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
894 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
895 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
896 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
897 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
898 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
899 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
900 SOM_HOWTO (R_RESERVED, "R_RESERVED"),
901 SOM_HOWTO (R_RESERVED, "R_RESERVED")
902 };
903
904 /* Initialize the SOM relocation queue. By definition the queue holds
905 the last four multibyte fixups. */
906
907 static void
908 som_initialize_reloc_queue (struct reloc_queue *queue)
909 {
910 queue[0].reloc = NULL;
911 queue[0].size = 0;
912 queue[1].reloc = NULL;
913 queue[1].size = 0;
914 queue[2].reloc = NULL;
915 queue[2].size = 0;
916 queue[3].reloc = NULL;
917 queue[3].size = 0;
918 }
919
920 /* Insert a new relocation into the relocation queue. */
921
922 static void
923 som_reloc_queue_insert (unsigned char *p,
924 unsigned int size,
925 struct reloc_queue *queue)
926 {
927 queue[3].reloc = queue[2].reloc;
928 queue[3].size = queue[2].size;
929 queue[2].reloc = queue[1].reloc;
930 queue[2].size = queue[1].size;
931 queue[1].reloc = queue[0].reloc;
932 queue[1].size = queue[0].size;
933 queue[0].reloc = p;
934 queue[0].size = size;
935 }
936
937 /* When an entry in the relocation queue is reused, the entry moves
938 to the front of the queue. */
939
940 static void
941 som_reloc_queue_fix (struct reloc_queue *queue, unsigned int idx)
942 {
943 if (idx == 0)
944 return;
945
946 if (idx == 1)
947 {
948 unsigned char *tmp1 = queue[0].reloc;
949 unsigned int tmp2 = queue[0].size;
950
951 queue[0].reloc = queue[1].reloc;
952 queue[0].size = queue[1].size;
953 queue[1].reloc = tmp1;
954 queue[1].size = tmp2;
955 return;
956 }
957
958 if (idx == 2)
959 {
960 unsigned char *tmp1 = queue[0].reloc;
961 unsigned int tmp2 = queue[0].size;
962
963 queue[0].reloc = queue[2].reloc;
964 queue[0].size = queue[2].size;
965 queue[2].reloc = queue[1].reloc;
966 queue[2].size = queue[1].size;
967 queue[1].reloc = tmp1;
968 queue[1].size = tmp2;
969 return;
970 }
971
972 if (idx == 3)
973 {
974 unsigned char *tmp1 = queue[0].reloc;
975 unsigned int tmp2 = queue[0].size;
976
977 queue[0].reloc = queue[3].reloc;
978 queue[0].size = queue[3].size;
979 queue[3].reloc = queue[2].reloc;
980 queue[3].size = queue[2].size;
981 queue[2].reloc = queue[1].reloc;
982 queue[2].size = queue[1].size;
983 queue[1].reloc = tmp1;
984 queue[1].size = tmp2;
985 return;
986 }
987 abort ();
988 }
989
990 /* Search for a particular relocation in the relocation queue. */
991
992 static int
993 som_reloc_queue_find (unsigned char *p,
994 unsigned int size,
995 struct reloc_queue *queue)
996 {
997 if (queue[0].reloc && !memcmp (p, queue[0].reloc, size)
998 && size == queue[0].size)
999 return 0;
1000 if (queue[1].reloc && !memcmp (p, queue[1].reloc, size)
1001 && size == queue[1].size)
1002 return 1;
1003 if (queue[2].reloc && !memcmp (p, queue[2].reloc, size)
1004 && size == queue[2].size)
1005 return 2;
1006 if (queue[3].reloc && !memcmp (p, queue[3].reloc, size)
1007 && size == queue[3].size)
1008 return 3;
1009 return -1;
1010 }
1011
1012 static unsigned char *
1013 try_prev_fixup (bfd *abfd ATTRIBUTE_UNUSED,
1014 unsigned int *subspace_reloc_sizep,
1015 unsigned char *p,
1016 unsigned int size,
1017 struct reloc_queue *queue)
1018 {
1019 int queue_index = som_reloc_queue_find (p, size, queue);
1020
1021 if (queue_index != -1)
1022 {
1023 /* Found this in a previous fixup. Undo the fixup we
1024 just built and use R_PREV_FIXUP instead. We saved
1025 a total of size - 1 bytes in the fixup stream. */
1026 bfd_put_8 (abfd, R_PREV_FIXUP + queue_index, p);
1027 p += 1;
1028 *subspace_reloc_sizep += 1;
1029 som_reloc_queue_fix (queue, queue_index);
1030 }
1031 else
1032 {
1033 som_reloc_queue_insert (p, size, queue);
1034 *subspace_reloc_sizep += size;
1035 p += size;
1036 }
1037 return p;
1038 }
1039
1040 /* Emit the proper R_NO_RELOCATION fixups to map the next SKIP
1041 bytes without any relocation. Update the size of the subspace
1042 relocation stream via SUBSPACE_RELOC_SIZE_P; also return the
1043 current pointer into the relocation stream. */
1044
1045 static unsigned char *
1046 som_reloc_skip (bfd *abfd,
1047 unsigned int skip,
1048 unsigned char *p,
1049 unsigned int *subspace_reloc_sizep,
1050 struct reloc_queue *queue)
1051 {
1052 /* Use a 4 byte R_NO_RELOCATION entry with a maximal value
1053 then R_PREV_FIXUPs to get the difference down to a
1054 reasonable size. */
1055 if (skip >= 0x1000000)
1056 {
1057 skip -= 0x1000000;
1058 bfd_put_8 (abfd, R_NO_RELOCATION + 31, p);
1059 bfd_put_8 (abfd, 0xff, p + 1);
1060 bfd_put_16 (abfd, (bfd_vma) 0xffff, p + 2);
1061 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue);
1062 while (skip >= 0x1000000)
1063 {
1064 skip -= 0x1000000;
1065 bfd_put_8 (abfd, R_PREV_FIXUP, p);
1066 p++;
1067 *subspace_reloc_sizep += 1;
1068 /* No need to adjust queue here since we are repeating the
1069 most recent fixup. */
1070 }
1071 }
1072
1073 /* The difference must be less than 0x1000000. Use one
1074 more R_NO_RELOCATION entry to get to the right difference. */
1075 if ((skip & 3) == 0 && skip <= 0xc0000 && skip > 0)
1076 {
1077 /* Difference can be handled in a simple single-byte
1078 R_NO_RELOCATION entry. */
1079 if (skip <= 0x60)
1080 {
1081 bfd_put_8 (abfd, R_NO_RELOCATION + (skip >> 2) - 1, p);
1082 *subspace_reloc_sizep += 1;
1083 p++;
1084 }
1085 /* Handle it with a two byte R_NO_RELOCATION entry. */
1086 else if (skip <= 0x1000)
1087 {
1088 bfd_put_8 (abfd, R_NO_RELOCATION + 24 + (((skip >> 2) - 1) >> 8), p);
1089 bfd_put_8 (abfd, (skip >> 2) - 1, p + 1);
1090 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue);
1091 }
1092 /* Handle it with a three byte R_NO_RELOCATION entry. */
1093 else
1094 {
1095 bfd_put_8 (abfd, R_NO_RELOCATION + 28 + (((skip >> 2) - 1) >> 16), p);
1096 bfd_put_16 (abfd, (bfd_vma) (skip >> 2) - 1, p + 1);
1097 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue);
1098 }
1099 }
1100 /* Ugh. Punt and use a 4 byte entry. */
1101 else if (skip > 0)
1102 {
1103 bfd_put_8 (abfd, R_NO_RELOCATION + 31, p);
1104 bfd_put_8 (abfd, (skip - 1) >> 16, p + 1);
1105 bfd_put_16 (abfd, (bfd_vma) skip - 1, p + 2);
1106 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue);
1107 }
1108 return p;
1109 }
1110
1111 /* Emit the proper R_DATA_OVERRIDE fixups to handle a nonzero addend
1112 from a BFD relocation. Update the size of the subspace relocation
1113 stream via SUBSPACE_RELOC_SIZE_P; also return the current pointer
1114 into the relocation stream. */
1115
1116 static unsigned char *
1117 som_reloc_addend (bfd *abfd,
1118 bfd_vma addend,
1119 unsigned char *p,
1120 unsigned int *subspace_reloc_sizep,
1121 struct reloc_queue *queue)
1122 {
1123 if (addend + 0x80 < 0x100)
1124 {
1125 bfd_put_8 (abfd, R_DATA_OVERRIDE + 1, p);
1126 bfd_put_8 (abfd, addend, p + 1);
1127 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue);
1128 }
1129 else if (addend + 0x8000 < 0x10000)
1130 {
1131 bfd_put_8 (abfd, R_DATA_OVERRIDE + 2, p);
1132 bfd_put_16 (abfd, addend, p + 1);
1133 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue);
1134 }
1135 else if (addend + 0x800000 < 0x1000000)
1136 {
1137 bfd_put_8 (abfd, R_DATA_OVERRIDE + 3, p);
1138 bfd_put_8 (abfd, addend >> 16, p + 1);
1139 bfd_put_16 (abfd, addend, p + 2);
1140 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue);
1141 }
1142 else
1143 {
1144 bfd_put_8 (abfd, R_DATA_OVERRIDE + 4, p);
1145 bfd_put_32 (abfd, addend, p + 1);
1146 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 5, queue);
1147 }
1148 return p;
1149 }
1150
1151 /* Handle a single function call relocation. */
1152
1153 static unsigned char *
1154 som_reloc_call (bfd *abfd,
1155 unsigned char *p,
1156 unsigned int *subspace_reloc_sizep,
1157 arelent *bfd_reloc,
1158 int sym_num,
1159 struct reloc_queue *queue)
1160 {
1161 int arg_bits = HPPA_R_ARG_RELOC (bfd_reloc->addend);
1162 int rtn_bits = arg_bits & 0x3;
1163 int type, done = 0;
1164
1165 /* You'll never believe all this is necessary to handle relocations
1166 for function calls. Having to compute and pack the argument
1167 relocation bits is the real nightmare.
1168
1169 If you're interested in how this works, just forget it. You really
1170 do not want to know about this braindamage. */
1171
1172 /* First see if this can be done with a "simple" relocation. Simple
1173 relocations have a symbol number < 0x100 and have simple encodings
1174 of argument relocations. */
1175
1176 if (sym_num < 0x100)
1177 {
1178 switch (arg_bits)
1179 {
1180 case 0:
1181 case 1:
1182 type = 0;
1183 break;
1184 case 1 << 8:
1185 case 1 << 8 | 1:
1186 type = 1;
1187 break;
1188 case 1 << 8 | 1 << 6:
1189 case 1 << 8 | 1 << 6 | 1:
1190 type = 2;
1191 break;
1192 case 1 << 8 | 1 << 6 | 1 << 4:
1193 case 1 << 8 | 1 << 6 | 1 << 4 | 1:
1194 type = 3;
1195 break;
1196 case 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2:
1197 case 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2 | 1:
1198 type = 4;
1199 break;
1200 default:
1201 /* Not one of the easy encodings. This will have to be
1202 handled by the more complex code below. */
1203 type = -1;
1204 break;
1205 }
1206 if (type != -1)
1207 {
1208 /* Account for the return value too. */
1209 if (rtn_bits)
1210 type += 5;
1211
1212 /* Emit a 2 byte relocation. Then see if it can be handled
1213 with a relocation which is already in the relocation queue. */
1214 bfd_put_8 (abfd, bfd_reloc->howto->type + type, p);
1215 bfd_put_8 (abfd, sym_num, p + 1);
1216 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue);
1217 done = 1;
1218 }
1219 }
1220
1221 /* If this could not be handled with a simple relocation, then do a hard
1222 one. Hard relocations occur if the symbol number was too high or if
1223 the encoding of argument relocation bits is too complex. */
1224 if (! done)
1225 {
1226 /* Don't ask about these magic sequences. I took them straight
1227 from gas-1.36 which took them from the a.out man page. */
1228 type = rtn_bits;
1229 if ((arg_bits >> 6 & 0xf) == 0xe)
1230 type += 9 * 40;
1231 else
1232 type += (3 * (arg_bits >> 8 & 3) + (arg_bits >> 6 & 3)) * 40;
1233 if ((arg_bits >> 2 & 0xf) == 0xe)
1234 type += 9 * 4;
1235 else
1236 type += (3 * (arg_bits >> 4 & 3) + (arg_bits >> 2 & 3)) * 4;
1237
1238 /* Output the first two bytes of the relocation. These describe
1239 the length of the relocation and encoding style. */
1240 bfd_put_8 (abfd, bfd_reloc->howto->type + 10
1241 + 2 * (sym_num >= 0x100) + (type >= 0x100),
1242 p);
1243 bfd_put_8 (abfd, type, p + 1);
1244
1245 /* Now output the symbol index and see if this bizarre relocation
1246 just happened to be in the relocation queue. */
1247 if (sym_num < 0x100)
1248 {
1249 bfd_put_8 (abfd, sym_num, p + 2);
1250 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue);
1251 }
1252 else
1253 {
1254 bfd_put_8 (abfd, sym_num >> 16, p + 2);
1255 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 3);
1256 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 5, queue);
1257 }
1258 }
1259 return p;
1260 }
1261
1262 /* Return the logarithm of X, base 2, considering X unsigned,
1263 if X is a power of 2. Otherwise, returns -1. */
1264
1265 static int
1266 exact_log2 (unsigned int x)
1267 {
1268 int log = 0;
1269
1270 /* Test for 0 or a power of 2. */
1271 if (x == 0 || x != (x & -x))
1272 return -1;
1273
1274 while ((x >>= 1) != 0)
1275 log++;
1276 return log;
1277 }
1278
1279 static bfd_reloc_status_type
1280 hppa_som_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1281 arelent *reloc_entry,
1282 asymbol *symbol_in ATTRIBUTE_UNUSED,
1283 void *data ATTRIBUTE_UNUSED,
1284 asection *input_section,
1285 bfd *output_bfd,
1286 char **error_message ATTRIBUTE_UNUSED)
1287 {
1288 if (output_bfd)
1289 reloc_entry->address += input_section->output_offset;
1290
1291 return bfd_reloc_ok;
1292 }
1293
1294 /* Given a generic HPPA relocation type, the instruction format,
1295 and a field selector, return one or more appropriate SOM relocations. */
1296
1297 int **
1298 hppa_som_gen_reloc_type (bfd *abfd,
1299 int base_type,
1300 int format,
1301 enum hppa_reloc_field_selector_type_alt field,
1302 int sym_diff,
1303 asymbol *sym)
1304 {
1305 int *final_type, **final_types;
1306
1307 final_types = bfd_alloc (abfd, (bfd_size_type) sizeof (int *) * 6);
1308 final_type = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1309 if (!final_types || !final_type)
1310 return NULL;
1311
1312 /* The field selector may require additional relocations to be
1313 generated. It's impossible to know at this moment if additional
1314 relocations will be needed, so we make them. The code to actually
1315 write the relocation/fixup stream is responsible for removing
1316 any redundant relocations. */
1317 switch (field)
1318 {
1319 case e_fsel:
1320 case e_psel:
1321 case e_lpsel:
1322 case e_rpsel:
1323 final_types[0] = final_type;
1324 final_types[1] = NULL;
1325 final_types[2] = NULL;
1326 *final_type = base_type;
1327 break;
1328
1329 case e_tsel:
1330 case e_ltsel:
1331 case e_rtsel:
1332 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1333 if (!final_types[0])
1334 return NULL;
1335 if (field == e_tsel)
1336 *final_types[0] = R_FSEL;
1337 else if (field == e_ltsel)
1338 *final_types[0] = R_LSEL;
1339 else
1340 *final_types[0] = R_RSEL;
1341 final_types[1] = final_type;
1342 final_types[2] = NULL;
1343 *final_type = base_type;
1344 break;
1345
1346 case e_lssel:
1347 case e_rssel:
1348 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1349 if (!final_types[0])
1350 return NULL;
1351 *final_types[0] = R_S_MODE;
1352 final_types[1] = final_type;
1353 final_types[2] = NULL;
1354 *final_type = base_type;
1355 break;
1356
1357 case e_lsel:
1358 case e_rsel:
1359 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1360 if (!final_types[0])
1361 return NULL;
1362 *final_types[0] = R_N_MODE;
1363 final_types[1] = final_type;
1364 final_types[2] = NULL;
1365 *final_type = base_type;
1366 break;
1367
1368 case e_ldsel:
1369 case e_rdsel:
1370 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1371 if (!final_types[0])
1372 return NULL;
1373 *final_types[0] = R_D_MODE;
1374 final_types[1] = final_type;
1375 final_types[2] = NULL;
1376 *final_type = base_type;
1377 break;
1378
1379 case e_lrsel:
1380 case e_rrsel:
1381 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1382 if (!final_types[0])
1383 return NULL;
1384 *final_types[0] = R_R_MODE;
1385 final_types[1] = final_type;
1386 final_types[2] = NULL;
1387 *final_type = base_type;
1388 break;
1389
1390 case e_nsel:
1391 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1392 if (!final_types[0])
1393 return NULL;
1394 *final_types[0] = R_N1SEL;
1395 final_types[1] = final_type;
1396 final_types[2] = NULL;
1397 *final_type = base_type;
1398 break;
1399
1400 case e_nlsel:
1401 case e_nlrsel:
1402 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1403 if (!final_types[0])
1404 return NULL;
1405 *final_types[0] = R_N0SEL;
1406 final_types[1] = bfd_alloc (abfd, (bfd_size_type) sizeof (int));
1407 if (!final_types[1])
1408 return NULL;
1409 if (field == e_nlsel)
1410 *final_types[1] = R_N_MODE;
1411 else
1412 *final_types[1] = R_R_MODE;
1413 final_types[2] = final_type;
1414 final_types[3] = NULL;
1415 *final_type = base_type;
1416 break;
1417
1418 /* FIXME: These two field selectors are not currently supported. */
1419 case e_ltpsel:
1420 case e_rtpsel:
1421 abort ();
1422 }
1423
1424 switch (base_type)
1425 {
1426 case R_HPPA:
1427 /* The difference of two symbols needs *very* special handling. */
1428 if (sym_diff)
1429 {
1430 bfd_size_type amt = sizeof (int);
1431
1432 final_types[0] = bfd_alloc (abfd, amt);
1433 final_types[1] = bfd_alloc (abfd, amt);
1434 final_types[2] = bfd_alloc (abfd, amt);
1435 final_types[3] = bfd_alloc (abfd, amt);
1436 if (!final_types[0] || !final_types[1] || !final_types[2])
1437 return NULL;
1438 if (field == e_fsel)
1439 *final_types[0] = R_FSEL;
1440 else if (field == e_rsel)
1441 *final_types[0] = R_RSEL;
1442 else if (field == e_lsel)
1443 *final_types[0] = R_LSEL;
1444 *final_types[1] = R_COMP2;
1445 *final_types[2] = R_COMP2;
1446 *final_types[3] = R_COMP1;
1447 final_types[4] = final_type;
1448 if (format == 32)
1449 *final_types[4] = R_DATA_EXPR;
1450 else
1451 *final_types[4] = R_CODE_EXPR;
1452 final_types[5] = NULL;
1453 break;
1454 }
1455 /* PLABELs get their own relocation type. */
1456 else if (field == e_psel
1457 || field == e_lpsel
1458 || field == e_rpsel)
1459 {
1460 /* A PLABEL relocation that has a size of 32 bits must
1461 be a R_DATA_PLABEL. All others are R_CODE_PLABELs. */
1462 if (format == 32)
1463 *final_type = R_DATA_PLABEL;
1464 else
1465 *final_type = R_CODE_PLABEL;
1466 }
1467 /* PIC stuff. */
1468 else if (field == e_tsel
1469 || field == e_ltsel
1470 || field == e_rtsel)
1471 *final_type = R_DLT_REL;
1472 /* A relocation in the data space is always a full 32bits. */
1473 else if (format == 32)
1474 {
1475 *final_type = R_DATA_ONE_SYMBOL;
1476
1477 /* If there's no SOM symbol type associated with this BFD
1478 symbol, then set the symbol type to ST_DATA.
1479
1480 Only do this if the type is going to default later when
1481 we write the object file.
1482
1483 This is done so that the linker never encounters an
1484 R_DATA_ONE_SYMBOL reloc involving an ST_CODE symbol.
1485
1486 This allows the compiler to generate exception handling
1487 tables.
1488
1489 Note that one day we may need to also emit BEGIN_BRTAB and
1490 END_BRTAB to prevent the linker from optimizing away insns
1491 in exception handling regions. */
1492 if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN
1493 && (sym->flags & BSF_SECTION_SYM) == 0
1494 && (sym->flags & BSF_FUNCTION) == 0
1495 && ! bfd_is_com_section (sym->section))
1496 som_symbol_data (sym)->som_type = SYMBOL_TYPE_DATA;
1497 }
1498 break;
1499
1500 case R_HPPA_GOTOFF:
1501 /* More PLABEL special cases. */
1502 if (field == e_psel
1503 || field == e_lpsel
1504 || field == e_rpsel)
1505 *final_type = R_DATA_PLABEL;
1506 else if (field == e_fsel && format == 32)
1507 *final_type = R_DATA_GPREL;
1508 break;
1509
1510 case R_HPPA_COMPLEX:
1511 /* The difference of two symbols needs *very* special handling. */
1512 if (sym_diff)
1513 {
1514 bfd_size_type amt = sizeof (int);
1515
1516 final_types[0] = bfd_alloc (abfd, amt);
1517 final_types[1] = bfd_alloc (abfd, amt);
1518 final_types[2] = bfd_alloc (abfd, amt);
1519 final_types[3] = bfd_alloc (abfd, amt);
1520 if (!final_types[0] || !final_types[1] || !final_types[2])
1521 return NULL;
1522 if (field == e_fsel)
1523 *final_types[0] = R_FSEL;
1524 else if (field == e_rsel)
1525 *final_types[0] = R_RSEL;
1526 else if (field == e_lsel)
1527 *final_types[0] = R_LSEL;
1528 *final_types[1] = R_COMP2;
1529 *final_types[2] = R_COMP2;
1530 *final_types[3] = R_COMP1;
1531 final_types[4] = final_type;
1532 if (format == 32)
1533 *final_types[4] = R_DATA_EXPR;
1534 else
1535 *final_types[4] = R_CODE_EXPR;
1536 final_types[5] = NULL;
1537 break;
1538 }
1539 else
1540 break;
1541
1542 case R_HPPA_NONE:
1543 case R_HPPA_ABS_CALL:
1544 /* Right now we can default all these. */
1545 break;
1546
1547 case R_HPPA_PCREL_CALL:
1548 {
1549 #ifndef NO_PCREL_MODES
1550 /* If we have short and long pcrel modes, then generate the proper
1551 mode selector, then the pcrel relocation. Redundant selectors
1552 will be eliminated as the relocs are sized and emitted. */
1553 bfd_size_type amt = sizeof (int);
1554
1555 final_types[0] = bfd_alloc (abfd, amt);
1556 if (!final_types[0])
1557 return NULL;
1558 if (format == 17)
1559 *final_types[0] = R_SHORT_PCREL_MODE;
1560 else
1561 *final_types[0] = R_LONG_PCREL_MODE;
1562 final_types[1] = final_type;
1563 final_types[2] = NULL;
1564 *final_type = base_type;
1565 #endif
1566 break;
1567 }
1568 }
1569 return final_types;
1570 }
1571
1572 /* Return the address of the correct entry in the PA SOM relocation
1573 howto table. */
1574
1575 static reloc_howto_type *
1576 som_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1577 bfd_reloc_code_real_type code)
1578 {
1579 if ((int) code < (int) R_NO_RELOCATION + 255)
1580 {
1581 BFD_ASSERT ((int) som_hppa_howto_table[(int) code].type == (int) code);
1582 return &som_hppa_howto_table[(int) code];
1583 }
1584
1585 return NULL;
1586 }
1587
1588 static reloc_howto_type *
1589 som_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1590 const char *r_name)
1591 {
1592 unsigned int i;
1593
1594 for (i = 0;
1595 i < sizeof (som_hppa_howto_table) / sizeof (som_hppa_howto_table[0]);
1596 i++)
1597 if (som_hppa_howto_table[i].name != NULL
1598 && strcasecmp (som_hppa_howto_table[i].name, r_name) == 0)
1599 return &som_hppa_howto_table[i];
1600
1601 return NULL;
1602 }
1603
1604 static void
1605 som_swap_clock_in (struct som_external_clock *src,
1606 struct som_clock *dst)
1607 {
1608 dst->secs = bfd_getb32 (src->secs);
1609 dst->nanosecs = bfd_getb32 (src->nanosecs);
1610 }
1611
1612 static void
1613 som_swap_clock_out (struct som_clock *src,
1614 struct som_external_clock *dst)
1615 {
1616 bfd_putb32 (src->secs, dst->secs);
1617 bfd_putb32 (src->nanosecs, dst->nanosecs);
1618 }
1619
1620 static void
1621 som_swap_header_in (struct som_external_header *src,
1622 struct som_header *dst)
1623 {
1624 dst->system_id = bfd_getb16 (src->system_id);
1625 dst->a_magic = bfd_getb16 (src->a_magic);
1626 dst->version_id = bfd_getb32 (src->version_id);
1627 som_swap_clock_in (&src->file_time, &dst->file_time);
1628 dst->entry_space = bfd_getb32 (src->entry_space);
1629 dst->entry_subspace = bfd_getb32 (src->entry_subspace);
1630 dst->entry_offset = bfd_getb32 (src->entry_offset);
1631 dst->aux_header_location = bfd_getb32 (src->aux_header_location);
1632 dst->aux_header_size = bfd_getb32 (src->aux_header_size);
1633 dst->som_length = bfd_getb32 (src->som_length);
1634 dst->presumed_dp = bfd_getb32 (src->presumed_dp);
1635 dst->space_location = bfd_getb32 (src->space_location);
1636 dst->space_total = bfd_getb32 (src->space_total);
1637 dst->subspace_location = bfd_getb32 (src->subspace_location);
1638 dst->subspace_total = bfd_getb32 (src->subspace_total);
1639 dst->loader_fixup_location = bfd_getb32 (src->loader_fixup_location);
1640 dst->loader_fixup_total = bfd_getb32 (src->loader_fixup_total);
1641 dst->space_strings_location = bfd_getb32 (src->space_strings_location);
1642 dst->space_strings_size = bfd_getb32 (src->space_strings_size);
1643 dst->init_array_location = bfd_getb32 (src->init_array_location);
1644 dst->init_array_total = bfd_getb32 (src->init_array_total);
1645 dst->compiler_location = bfd_getb32 (src->compiler_location);
1646 dst->compiler_total = bfd_getb32 (src->compiler_total);
1647 dst->symbol_location = bfd_getb32 (src->symbol_location);
1648 dst->symbol_total = bfd_getb32 (src->symbol_total);
1649 dst->fixup_request_location = bfd_getb32 (src->fixup_request_location);
1650 dst->fixup_request_total = bfd_getb32 (src->fixup_request_total);
1651 dst->symbol_strings_location = bfd_getb32 (src->symbol_strings_location);
1652 dst->symbol_strings_size = bfd_getb32 (src->symbol_strings_size);
1653 dst->unloadable_sp_location = bfd_getb32 (src->unloadable_sp_location);
1654 dst->unloadable_sp_size = bfd_getb32 (src->unloadable_sp_size);
1655 dst->checksum = bfd_getb32 (src->checksum);
1656 }
1657
1658 static void
1659 som_swap_header_out (struct som_header *src,
1660 struct som_external_header *dst)
1661 {
1662 bfd_putb16 (src->system_id, dst->system_id);
1663 bfd_putb16 (src->a_magic, dst->a_magic);
1664 bfd_putb32 (src->version_id, dst->version_id);
1665 som_swap_clock_out (&src->file_time, &dst->file_time);
1666 bfd_putb32 (src->entry_space, dst->entry_space);
1667 bfd_putb32 (src->entry_subspace, dst->entry_subspace);
1668 bfd_putb32 (src->entry_offset, dst->entry_offset);
1669 bfd_putb32 (src->aux_header_location, dst->aux_header_location);
1670 bfd_putb32 (src->aux_header_size, dst->aux_header_size);
1671 bfd_putb32 (src->som_length, dst->som_length);
1672 bfd_putb32 (src->presumed_dp, dst->presumed_dp);
1673 bfd_putb32 (src->space_location, dst->space_location);
1674 bfd_putb32 (src->space_total, dst->space_total);
1675 bfd_putb32 (src->subspace_location, dst->subspace_location);
1676 bfd_putb32 (src->subspace_total, dst->subspace_total);
1677 bfd_putb32 (src->loader_fixup_location, dst->loader_fixup_location);
1678 bfd_putb32 (src->loader_fixup_total, dst->loader_fixup_total);
1679 bfd_putb32 (src->space_strings_location, dst->space_strings_location);
1680 bfd_putb32 (src->space_strings_size, dst->space_strings_size);
1681 bfd_putb32 (src->init_array_location, dst->init_array_location);
1682 bfd_putb32 (src->init_array_total, dst->init_array_total);
1683 bfd_putb32 (src->compiler_location, dst->compiler_location);
1684 bfd_putb32 (src->compiler_total, dst->compiler_total);
1685 bfd_putb32 (src->symbol_location, dst->symbol_location);
1686 bfd_putb32 (src->symbol_total, dst->symbol_total);
1687 bfd_putb32 (src->fixup_request_location, dst->fixup_request_location);
1688 bfd_putb32 (src->fixup_request_total, dst->fixup_request_total);
1689 bfd_putb32 (src->symbol_strings_location, dst->symbol_strings_location);
1690 bfd_putb32 (src->symbol_strings_size, dst->symbol_strings_size);
1691 bfd_putb32 (src->unloadable_sp_location, dst->unloadable_sp_location);
1692 bfd_putb32 (src->unloadable_sp_size, dst->unloadable_sp_size);
1693 bfd_putb32 (src->checksum, dst->checksum);
1694 }
1695
1696 static void
1697 som_swap_space_dictionary_in (struct som_external_space_dictionary_record *src,
1698 struct som_space_dictionary_record *dst)
1699 {
1700 unsigned int flags;
1701
1702 dst->name = bfd_getb32 (src->name);
1703 flags = bfd_getb32 (src->flags);
1704 dst->is_loadable = (flags & SOM_SPACE_IS_LOADABLE) != 0;
1705 dst->is_defined = (flags & SOM_SPACE_IS_DEFINED) != 0;
1706 dst->is_private = (flags & SOM_SPACE_IS_PRIVATE) != 0;
1707 dst->has_intermediate_code = (flags & SOM_SPACE_HAS_INTERMEDIATE_CODE) != 0;
1708 dst->is_tspecific = (flags & SOM_SPACE_IS_TSPECIFIC) != 0;
1709 dst->reserved = 0;
1710 dst->sort_key = (flags >> SOM_SPACE_SORT_KEY_SH) & SOM_SPACE_SORT_KEY_MASK;
1711 dst->reserved2 = 0;
1712 dst->space_number = bfd_getb32 (src->space_number);
1713 dst->subspace_index = bfd_getb32 (src->subspace_index);
1714 dst->subspace_quantity = bfd_getb32 (src->subspace_quantity);
1715 dst->loader_fix_index = bfd_getb32 (src->loader_fix_index);
1716 dst->loader_fix_quantity = bfd_getb32 (src->loader_fix_quantity);
1717 dst->init_pointer_index = bfd_getb32 (src->init_pointer_index);
1718 dst->init_pointer_quantity = bfd_getb32 (src->init_pointer_quantity);
1719 }
1720
1721 static void
1722 som_swap_space_dictionary_out (struct som_space_dictionary_record *src,
1723 struct som_external_space_dictionary_record *dst)
1724 {
1725 unsigned int flags;
1726
1727 bfd_putb32 (src->name, dst->name);
1728
1729 flags = 0;
1730 if (src->is_loadable)
1731 flags |= SOM_SPACE_IS_LOADABLE;
1732 if (src->is_defined)
1733 flags |= SOM_SPACE_IS_DEFINED;
1734 if (src->is_private)
1735 flags |= SOM_SPACE_IS_PRIVATE;
1736 if (src->has_intermediate_code)
1737 flags |= SOM_SPACE_HAS_INTERMEDIATE_CODE;
1738 if (src->is_tspecific)
1739 flags |= SOM_SPACE_IS_TSPECIFIC;
1740 flags |= (src->sort_key & SOM_SPACE_SORT_KEY_MASK) << SOM_SPACE_SORT_KEY_SH;
1741 bfd_putb32 (flags, dst->flags);
1742 bfd_putb32 (src->space_number, dst->space_number);
1743 bfd_putb32 (src->subspace_index, dst->subspace_index);
1744 bfd_putb32 (src->subspace_quantity, dst->subspace_quantity);
1745 bfd_putb32 (src->loader_fix_index, dst->loader_fix_index);
1746 bfd_putb32 (src->loader_fix_quantity, dst->loader_fix_quantity);
1747 bfd_putb32 (src->init_pointer_index, dst->init_pointer_index);
1748 bfd_putb32 (src->init_pointer_quantity, dst->init_pointer_quantity);
1749 }
1750
1751 static void
1752 som_swap_subspace_dictionary_in
1753 (struct som_external_subspace_dictionary_record *src,
1754 struct som_subspace_dictionary_record *dst)
1755 {
1756 unsigned int flags;
1757 dst->space_index = bfd_getb32 (src->space_index);
1758 flags = bfd_getb32 (src->flags);
1759 dst->access_control_bits = (flags >> SOM_SUBSPACE_ACCESS_CONTROL_BITS_SH)
1760 & SOM_SUBSPACE_ACCESS_CONTROL_BITS_MASK;
1761 dst->memory_resident = (flags & SOM_SUBSPACE_MEMORY_RESIDENT) != 0;
1762 dst->dup_common = (flags & SOM_SUBSPACE_DUP_COMMON) != 0;
1763 dst->is_common = (flags & SOM_SUBSPACE_IS_COMMON) != 0;
1764 dst->is_loadable = (flags & SOM_SUBSPACE_IS_LOADABLE) != 0;
1765 dst->quadrant = (flags >> SOM_SUBSPACE_QUADRANT_SH)
1766 & SOM_SUBSPACE_QUADRANT_MASK;
1767 dst->initially_frozen = (flags & SOM_SUBSPACE_INITIALLY_FROZEN) != 0;
1768 dst->is_first = (flags & SOM_SUBSPACE_IS_FIRST) != 0;
1769 dst->code_only = (flags & SOM_SUBSPACE_CODE_ONLY) != 0;
1770 dst->sort_key = (flags >> SOM_SUBSPACE_SORT_KEY_SH)
1771 & SOM_SUBSPACE_SORT_KEY_MASK;
1772 dst->replicate_init = (flags & SOM_SUBSPACE_REPLICATE_INIT) != 0;
1773 dst->continuation = (flags & SOM_SUBSPACE_CONTINUATION) != 0;
1774 dst->is_tspecific = (flags & SOM_SUBSPACE_IS_TSPECIFIC) != 0;
1775 dst->is_comdat = (flags & SOM_SUBSPACE_IS_COMDAT) != 0;
1776 dst->reserved = 0;
1777 dst->file_loc_init_value = bfd_getb32 (src->file_loc_init_value);
1778 dst->initialization_length = bfd_getb32 (src->initialization_length);
1779 dst->subspace_start = bfd_getb32 (src->subspace_start);
1780 dst->subspace_length = bfd_getb32 (src->subspace_length);
1781 dst->alignment = bfd_getb32 (src->alignment);
1782 dst->name = bfd_getb32 (src->name);
1783 dst->fixup_request_index = bfd_getb32 (src->fixup_request_index);
1784 dst->fixup_request_quantity = bfd_getb32 (src->fixup_request_quantity);
1785 }
1786
1787 static void
1788 som_swap_subspace_dictionary_record_out
1789 (struct som_subspace_dictionary_record *src,
1790 struct som_external_subspace_dictionary_record *dst)
1791 {
1792 unsigned int flags;
1793
1794 bfd_putb32 (src->space_index, dst->space_index);
1795 flags = (src->access_control_bits & SOM_SUBSPACE_ACCESS_CONTROL_BITS_MASK)
1796 << SOM_SUBSPACE_ACCESS_CONTROL_BITS_SH;
1797 if (src->memory_resident)
1798 flags |= SOM_SUBSPACE_MEMORY_RESIDENT;
1799 if (src->dup_common)
1800 flags |= SOM_SUBSPACE_DUP_COMMON;
1801 if (src->is_common)
1802 flags |= SOM_SUBSPACE_IS_COMMON;
1803 if (src->is_loadable)
1804 flags |= SOM_SUBSPACE_IS_LOADABLE;
1805 flags |= (src->quadrant & SOM_SUBSPACE_QUADRANT_MASK)
1806 << SOM_SUBSPACE_QUADRANT_SH;
1807 if (src->initially_frozen)
1808 flags |= SOM_SUBSPACE_INITIALLY_FROZEN;
1809 if (src->is_first)
1810 flags |= SOM_SUBSPACE_IS_FIRST;
1811 if (src->code_only)
1812 flags |= SOM_SUBSPACE_CODE_ONLY;
1813 flags |= (src->sort_key & SOM_SUBSPACE_SORT_KEY_MASK)
1814 << SOM_SUBSPACE_SORT_KEY_SH;
1815 if (src->replicate_init)
1816 flags |= SOM_SUBSPACE_REPLICATE_INIT;
1817 if (src->continuation)
1818 flags |= SOM_SUBSPACE_CONTINUATION;
1819 if (src->is_tspecific)
1820 flags |= SOM_SUBSPACE_IS_TSPECIFIC;
1821 if (src->is_comdat)
1822 flags |= SOM_SUBSPACE_IS_COMDAT;
1823 bfd_putb32 (flags, dst->flags);
1824 bfd_putb32 (src->file_loc_init_value, dst->file_loc_init_value);
1825 bfd_putb32 (src->initialization_length, dst->initialization_length);
1826 bfd_putb32 (src->subspace_start, dst->subspace_start);
1827 bfd_putb32 (src->subspace_length, dst->subspace_length);
1828 bfd_putb32 (src->alignment, dst->alignment);
1829 bfd_putb32 (src->name, dst->name);
1830 bfd_putb32 (src->fixup_request_index, dst->fixup_request_index);
1831 bfd_putb32 (src->fixup_request_quantity, dst->fixup_request_quantity);
1832 }
1833
1834 static void
1835 som_swap_aux_id_in (struct som_external_aux_id *src,
1836 struct som_aux_id *dst)
1837 {
1838 unsigned int flags = bfd_getb32 (src->flags);
1839
1840 dst->mandatory = (flags & SOM_AUX_ID_MANDATORY) != 0;
1841 dst->copy = (flags & SOM_AUX_ID_COPY) != 0;
1842 dst->append = (flags & SOM_AUX_ID_APPEND) != 0;
1843 dst->ignore = (flags & SOM_AUX_ID_IGNORE) != 0;
1844 dst->type = (flags >> SOM_AUX_ID_TYPE_SH) & SOM_AUX_ID_TYPE_MASK;
1845 dst->length = bfd_getb32 (src->length);
1846 }
1847
1848 static void
1849 som_swap_aux_id_out (struct som_aux_id *src,
1850 struct som_external_aux_id *dst)
1851 {
1852 unsigned int flags = 0;
1853
1854 if (src->mandatory)
1855 flags |= SOM_AUX_ID_MANDATORY;
1856 if (src->copy)
1857 flags |= SOM_AUX_ID_COPY;
1858 if (src->append)
1859 flags |= SOM_AUX_ID_APPEND;
1860 if (src->ignore)
1861 flags |= SOM_AUX_ID_IGNORE;
1862 flags |= (src->type & SOM_AUX_ID_TYPE_MASK) << SOM_AUX_ID_TYPE_SH;
1863 bfd_putb32 (flags, dst->flags);
1864 bfd_putb32 (src->length, dst->length);
1865 }
1866
1867 static void
1868 som_swap_string_auxhdr_out (struct som_string_auxhdr *src,
1869 struct som_external_string_auxhdr *dst)
1870 {
1871 som_swap_aux_id_out (&src->header_id, &dst->header_id);
1872 bfd_putb32 (src->string_length, dst->string_length);
1873 }
1874
1875 static void
1876 som_swap_compilation_unit_out (struct som_compilation_unit *src,
1877 struct som_external_compilation_unit *dst)
1878 {
1879 bfd_putb32 (src->name.strx, dst->name);
1880 bfd_putb32 (src->language_name.strx, dst->language_name);
1881 bfd_putb32 (src->product_id.strx, dst->product_id);
1882 bfd_putb32 (src->version_id.strx, dst->version_id);
1883 bfd_putb32 (src->flags, dst->flags);
1884 som_swap_clock_out (&src->compile_time, &dst->compile_time);
1885 som_swap_clock_out (&src->source_time, &dst->source_time);
1886 }
1887
1888 static void
1889 som_swap_exec_auxhdr_in (struct som_external_exec_auxhdr *src,
1890 struct som_exec_auxhdr *dst)
1891 {
1892 som_swap_aux_id_in (&src->som_auxhdr, &dst->som_auxhdr);
1893 dst->exec_tsize = bfd_getb32 (src->exec_tsize);
1894 dst->exec_tmem = bfd_getb32 (src->exec_tmem);
1895 dst->exec_tfile = bfd_getb32 (src->exec_tfile);
1896 dst->exec_dsize = bfd_getb32 (src->exec_dsize);
1897 dst->exec_dmem = bfd_getb32 (src->exec_dmem);
1898 dst->exec_dfile = bfd_getb32 (src->exec_dfile);
1899 dst->exec_bsize = bfd_getb32 (src->exec_bsize);
1900 dst->exec_entry = bfd_getb32 (src->exec_entry);
1901 dst->exec_flags = bfd_getb32 (src->exec_flags);
1902 dst->exec_bfill = bfd_getb32 (src->exec_bfill);
1903 }
1904
1905 static void
1906 som_swap_exec_auxhdr_out (struct som_exec_auxhdr *src,
1907 struct som_external_exec_auxhdr *dst)
1908 {
1909 som_swap_aux_id_out (&src->som_auxhdr, &dst->som_auxhdr);
1910 bfd_putb32 (src->exec_tsize, dst->exec_tsize);
1911 bfd_putb32 (src->exec_tmem, dst->exec_tmem);
1912 bfd_putb32 (src->exec_tfile, dst->exec_tfile);
1913 bfd_putb32 (src->exec_dsize, dst->exec_dsize);
1914 bfd_putb32 (src->exec_dmem, dst->exec_dmem);
1915 bfd_putb32 (src->exec_dfile, dst->exec_dfile);
1916 bfd_putb32 (src->exec_bsize, dst->exec_bsize);
1917 bfd_putb32 (src->exec_entry, dst->exec_entry);
1918 bfd_putb32 (src->exec_flags, dst->exec_flags);
1919 bfd_putb32 (src->exec_bfill, dst->exec_bfill);
1920 }
1921
1922 static void
1923 som_swap_lst_header_in (struct som_external_lst_header *src,
1924 struct som_lst_header *dst)
1925 {
1926 dst->system_id = bfd_getb16 (src->system_id);
1927 dst->a_magic = bfd_getb16 (src->a_magic);
1928 dst->version_id = bfd_getb32 (src->version_id);
1929 som_swap_clock_in (&src->file_time, &dst->file_time);
1930 dst->hash_loc = bfd_getb32 (src->hash_loc);
1931 dst->hash_size = bfd_getb32 (src->hash_size);
1932 dst->module_count = bfd_getb32 (src->module_count);
1933 dst->module_limit = bfd_getb32 (src->module_limit);
1934 dst->dir_loc = bfd_getb32 (src->dir_loc);
1935 dst->export_loc = bfd_getb32 (src->export_loc);
1936 dst->export_count = bfd_getb32 (src->export_count);
1937 dst->import_loc = bfd_getb32 (src->import_loc);
1938 dst->aux_loc = bfd_getb32 (src->aux_loc);
1939 dst->aux_size = bfd_getb32 (src->aux_size);
1940 dst->string_loc = bfd_getb32 (src->string_loc);
1941 dst->string_size = bfd_getb32 (src->string_size);
1942 dst->free_list = bfd_getb32 (src->free_list);
1943 dst->file_end = bfd_getb32 (src->file_end);
1944 dst->checksum = bfd_getb32 (src->checksum);
1945 }
1946
1947 /* Perform some initialization for an object. Save results of this
1948 initialization in the BFD. */
1949
1950 static const bfd_target *
1951 som_object_setup (bfd *abfd,
1952 struct som_header *file_hdrp,
1953 struct som_exec_auxhdr *aux_hdrp,
1954 unsigned long current_offset)
1955 {
1956 asection *section;
1957
1958 /* som_mkobject will set bfd_error if som_mkobject fails. */
1959 if (! som_mkobject (abfd))
1960 return NULL;
1961
1962 /* Set BFD flags based on what information is available in the SOM. */
1963 abfd->flags = BFD_NO_FLAGS;
1964 if (file_hdrp->symbol_total)
1965 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
1966
1967 switch (file_hdrp->a_magic)
1968 {
1969 case DEMAND_MAGIC:
1970 abfd->flags |= (D_PAGED | WP_TEXT | EXEC_P);
1971 break;
1972 case SHARE_MAGIC:
1973 abfd->flags |= (WP_TEXT | EXEC_P);
1974 break;
1975 case EXEC_MAGIC:
1976 abfd->flags |= (EXEC_P);
1977 break;
1978 case RELOC_MAGIC:
1979 abfd->flags |= HAS_RELOC;
1980 break;
1981 #ifdef SHL_MAGIC
1982 case SHL_MAGIC:
1983 #endif
1984 #ifdef DL_MAGIC
1985 case DL_MAGIC:
1986 #endif
1987 abfd->flags |= DYNAMIC;
1988 break;
1989
1990 default:
1991 break;
1992 }
1993
1994 /* Save the auxiliary header. */
1995 obj_som_exec_hdr (abfd) = aux_hdrp;
1996
1997 /* Allocate space to hold the saved exec header information. */
1998 obj_som_exec_data (abfd) = bfd_zalloc (abfd, (bfd_size_type) sizeof (struct som_exec_data));
1999 if (obj_som_exec_data (abfd) == NULL)
2000 return NULL;
2001
2002 /* The braindamaged OSF1 linker switched exec_flags and exec_entry!
2003
2004 We used to identify OSF1 binaries based on NEW_VERSION_ID, but
2005 apparently the latest HPUX linker is using NEW_VERSION_ID now.
2006
2007 It's about time, OSF has used the new id since at least 1992;
2008 HPUX didn't start till nearly 1995!.
2009
2010 The new approach examines the entry field for an executable. If
2011 it is not 4-byte aligned then it's not a proper code address and
2012 we guess it's really the executable flags. For a main program,
2013 we also consider zero to be indicative of a buggy linker, since
2014 that is not a valid entry point. The entry point for a shared
2015 library, however, can be zero so we do not consider that to be
2016 indicative of a buggy linker. */
2017 if (aux_hdrp)
2018 {
2019 int found = 0;
2020
2021 for (section = abfd->sections; section; section = section->next)
2022 {
2023 bfd_vma entry;
2024
2025 if ((section->flags & SEC_CODE) == 0)
2026 continue;
2027 entry = aux_hdrp->exec_entry + aux_hdrp->exec_tmem;
2028 if (entry >= section->vma
2029 && entry < section->vma + section->size)
2030 found = 1;
2031 }
2032 if ((aux_hdrp->exec_entry == 0 && !(abfd->flags & DYNAMIC))
2033 || (aux_hdrp->exec_entry & 0x3) != 0
2034 || ! found)
2035 {
2036 bfd_get_start_address (abfd) = aux_hdrp->exec_flags;
2037 obj_som_exec_data (abfd)->exec_flags = aux_hdrp->exec_entry;
2038 }
2039 else
2040 {
2041 bfd_get_start_address (abfd) = aux_hdrp->exec_entry + current_offset;
2042 obj_som_exec_data (abfd)->exec_flags = aux_hdrp->exec_flags;
2043 }
2044 }
2045
2046 obj_som_exec_data (abfd)->version_id = file_hdrp->version_id;
2047
2048 bfd_default_set_arch_mach (abfd, bfd_arch_hppa, pa10);
2049 bfd_get_symcount (abfd) = file_hdrp->symbol_total;
2050
2051 /* Initialize the saved symbol table and string table to NULL.
2052 Save important offsets and sizes from the SOM header into
2053 the BFD. */
2054 obj_som_stringtab (abfd) = NULL;
2055 obj_som_symtab (abfd) = NULL;
2056 obj_som_sorted_syms (abfd) = NULL;
2057 obj_som_stringtab_size (abfd) = file_hdrp->symbol_strings_size;
2058 obj_som_sym_filepos (abfd) = file_hdrp->symbol_location + current_offset;
2059 obj_som_str_filepos (abfd) = (file_hdrp->symbol_strings_location
2060 + current_offset);
2061 obj_som_reloc_filepos (abfd) = (file_hdrp->fixup_request_location
2062 + current_offset);
2063 obj_som_exec_data (abfd)->system_id = file_hdrp->system_id;
2064
2065 return abfd->xvec;
2066 }
2067
2068 /* Convert all of the space and subspace info into BFD sections. Each space
2069 contains a number of subspaces, which in turn describe the mapping between
2070 regions of the exec file, and the address space that the program runs in.
2071 BFD sections which correspond to spaces will overlap the sections for the
2072 associated subspaces. */
2073
2074 static bfd_boolean
2075 setup_sections (bfd *abfd,
2076 struct som_header *file_hdr,
2077 unsigned long current_offset)
2078 {
2079 char *space_strings;
2080 unsigned int space_index, i;
2081 unsigned int total_subspaces = 0;
2082 asection **subspace_sections = NULL;
2083 asection *section;
2084 bfd_size_type amt;
2085
2086 /* First, read in space names. */
2087 amt = file_hdr->space_strings_size;
2088 space_strings = bfd_malloc (amt);
2089 if (!space_strings && amt != 0)
2090 goto error_return;
2091
2092 if (bfd_seek (abfd, current_offset + file_hdr->space_strings_location,
2093 SEEK_SET) != 0)
2094 goto error_return;
2095 if (bfd_bread (space_strings, amt, abfd) != amt)
2096 goto error_return;
2097
2098 /* Loop over all of the space dictionaries, building up sections. */
2099 for (space_index = 0; space_index < file_hdr->space_total; space_index++)
2100 {
2101 struct som_space_dictionary_record space;
2102 struct som_external_space_dictionary_record ext_space;
2103 char *space_name;
2104 struct som_external_subspace_dictionary_record ext_subspace;
2105 struct som_subspace_dictionary_record subspace, save_subspace;
2106 unsigned int subspace_index;
2107 asection *space_asect;
2108 bfd_size_type space_size = 0;
2109 char *newname;
2110
2111 /* Read the space dictionary element. */
2112 if (bfd_seek (abfd,
2113 (current_offset + file_hdr->space_location
2114 + space_index * sizeof (ext_space)),
2115 SEEK_SET) != 0)
2116 goto error_return;
2117 amt = sizeof ext_space;
2118 if (bfd_bread (&ext_space, amt, abfd) != amt)
2119 goto error_return;
2120
2121 som_swap_space_dictionary_in (&ext_space, &space);
2122
2123 /* Setup the space name string. */
2124 space_name = space.name + space_strings;
2125
2126 /* Make a section out of it. */
2127 amt = strlen (space_name) + 1;
2128 newname = bfd_alloc (abfd, amt);
2129 if (!newname)
2130 goto error_return;
2131 strcpy (newname, space_name);
2132
2133 space_asect = bfd_make_section_anyway (abfd, newname);
2134 if (!space_asect)
2135 goto error_return;
2136
2137 if (space.is_loadable == 0)
2138 space_asect->flags |= SEC_DEBUGGING;
2139
2140 /* Set up all the attributes for the space. */
2141 if (! bfd_som_set_section_attributes (space_asect, space.is_defined,
2142 space.is_private, space.sort_key,
2143 space.space_number))
2144 goto error_return;
2145
2146 /* If the space has no subspaces, then we're done. */
2147 if (space.subspace_quantity == 0)
2148 continue;
2149
2150 /* Now, read in the first subspace for this space. */
2151 if (bfd_seek (abfd,
2152 (current_offset + file_hdr->subspace_location
2153 + space.subspace_index * sizeof ext_subspace),
2154 SEEK_SET) != 0)
2155 goto error_return;
2156 amt = sizeof ext_subspace;
2157 if (bfd_bread (&ext_subspace, amt, abfd) != amt)
2158 goto error_return;
2159 /* Seek back to the start of the subspaces for loop below. */
2160 if (bfd_seek (abfd,
2161 (current_offset + file_hdr->subspace_location
2162 + space.subspace_index * sizeof ext_subspace),
2163 SEEK_SET) != 0)
2164 goto error_return;
2165
2166 som_swap_subspace_dictionary_in (&ext_subspace, &subspace);
2167
2168 /* Setup the start address and file loc from the first subspace
2169 record. */
2170 space_asect->vma = subspace.subspace_start;
2171 space_asect->filepos = subspace.file_loc_init_value + current_offset;
2172 space_asect->alignment_power = exact_log2 (subspace.alignment);
2173 if (space_asect->alignment_power == (unsigned) -1)
2174 goto error_return;
2175
2176 /* Initialize save_subspace so we can reliably determine if this
2177 loop placed any useful values into it. */
2178 memset (&save_subspace, 0, sizeof (save_subspace));
2179
2180 /* Loop over the rest of the subspaces, building up more sections. */
2181 for (subspace_index = 0; subspace_index < space.subspace_quantity;
2182 subspace_index++)
2183 {
2184 asection *subspace_asect;
2185 char *subspace_name;
2186
2187 /* Read in the next subspace. */
2188 amt = sizeof ext_subspace;
2189 if (bfd_bread (&ext_subspace, amt, abfd) != amt)
2190 goto error_return;
2191
2192 som_swap_subspace_dictionary_in (&ext_subspace, &subspace);
2193
2194 /* Setup the subspace name string. */
2195 subspace_name = subspace.name + space_strings;
2196
2197 amt = strlen (subspace_name) + 1;
2198 newname = bfd_alloc (abfd, amt);
2199 if (!newname)
2200 goto error_return;
2201 strcpy (newname, subspace_name);
2202
2203 /* Make a section out of this subspace. */
2204 subspace_asect = bfd_make_section_anyway (abfd, newname);
2205 if (!subspace_asect)
2206 goto error_return;
2207
2208 /* Store private information about the section. */
2209 if (! bfd_som_set_subsection_attributes (subspace_asect, space_asect,
2210 subspace.access_control_bits,
2211 subspace.sort_key,
2212 subspace.quadrant,
2213 subspace.is_comdat,
2214 subspace.is_common,
2215 subspace.dup_common))
2216 goto error_return;
2217
2218 /* Keep an easy mapping between subspaces and sections.
2219 Note we do not necessarily read the subspaces in the
2220 same order in which they appear in the object file.
2221
2222 So to make the target index come out correctly, we
2223 store the location of the subspace header in target
2224 index, then sort using the location of the subspace
2225 header as the key. Then we can assign correct
2226 subspace indices. */
2227 total_subspaces++;
2228 subspace_asect->target_index = bfd_tell (abfd) - sizeof (subspace);
2229
2230 /* Set SEC_READONLY and SEC_CODE/SEC_DATA as specified
2231 by the access_control_bits in the subspace header. */
2232 switch (subspace.access_control_bits >> 4)
2233 {
2234 /* Readonly data. */
2235 case 0x0:
2236 subspace_asect->flags |= SEC_DATA | SEC_READONLY;
2237 break;
2238
2239 /* Normal data. */
2240 case 0x1:
2241 subspace_asect->flags |= SEC_DATA;
2242 break;
2243
2244 /* Readonly code and the gateways.
2245 Gateways have other attributes which do not map
2246 into anything BFD knows about. */
2247 case 0x2:
2248 case 0x4:
2249 case 0x5:
2250 case 0x6:
2251 case 0x7:
2252 subspace_asect->flags |= SEC_CODE | SEC_READONLY;
2253 break;
2254
2255 /* dynamic (writable) code. */
2256 case 0x3:
2257 subspace_asect->flags |= SEC_CODE;
2258 break;
2259 }
2260
2261 if (subspace.is_comdat || subspace.is_common || subspace.dup_common)
2262 subspace_asect->flags |= SEC_LINK_ONCE;
2263
2264 if (subspace.subspace_length > 0)
2265 subspace_asect->flags |= SEC_HAS_CONTENTS;
2266
2267 if (subspace.is_loadable)
2268 subspace_asect->flags |= SEC_ALLOC | SEC_LOAD;
2269 else
2270 subspace_asect->flags |= SEC_DEBUGGING;
2271
2272 if (subspace.code_only)
2273 subspace_asect->flags |= SEC_CODE;
2274
2275 /* Both file_loc_init_value and initialization_length will
2276 be zero for a BSS like subspace. */
2277 if (subspace.file_loc_init_value == 0
2278 && subspace.initialization_length == 0)
2279 subspace_asect->flags &= ~(SEC_DATA | SEC_LOAD | SEC_HAS_CONTENTS);
2280
2281 /* This subspace has relocations.
2282 The fixup_request_quantity is a byte count for the number of
2283 entries in the relocation stream; it is not the actual number
2284 of relocations in the subspace. */
2285 if (subspace.fixup_request_quantity != 0)
2286 {
2287 subspace_asect->flags |= SEC_RELOC;
2288 subspace_asect->rel_filepos = subspace.fixup_request_index;
2289 som_section_data (subspace_asect)->reloc_size
2290 = subspace.fixup_request_quantity;
2291 /* We can not determine this yet. When we read in the
2292 relocation table the correct value will be filled in. */
2293 subspace_asect->reloc_count = (unsigned) -1;
2294 }
2295
2296 /* Update save_subspace if appropriate. */
2297 if (subspace.file_loc_init_value > save_subspace.file_loc_init_value)
2298 save_subspace = subspace;
2299
2300 subspace_asect->vma = subspace.subspace_start;
2301 subspace_asect->size = subspace.subspace_length;
2302 subspace_asect->filepos = (subspace.file_loc_init_value
2303 + current_offset);
2304 subspace_asect->alignment_power = exact_log2 (subspace.alignment);
2305 if (subspace_asect->alignment_power == (unsigned) -1)
2306 goto error_return;
2307
2308 /* Keep track of the accumulated sizes of the sections. */
2309 space_size += subspace.subspace_length;
2310 }
2311
2312 /* This can happen for a .o which defines symbols in otherwise
2313 empty subspaces. */
2314 if (!save_subspace.file_loc_init_value)
2315 space_asect->size = 0;
2316 else
2317 {
2318 if (file_hdr->a_magic != RELOC_MAGIC)
2319 {
2320 /* Setup the size for the space section based upon the info
2321 in the last subspace of the space. */
2322 space_asect->size = (save_subspace.subspace_start
2323 - space_asect->vma
2324 + save_subspace.subspace_length);
2325 }
2326 else
2327 {
2328 /* The subspace_start field is not initialised in relocatable
2329 only objects, so it cannot be used for length calculations.
2330 Instead we use the space_size value which we have been
2331 accumulating. This isn't an accurate estimate since it
2332 ignores alignment and ordering issues. */
2333 space_asect->size = space_size;
2334 }
2335 }
2336 }
2337 /* Now that we've read in all the subspace records, we need to assign
2338 a target index to each subspace. */
2339 amt = total_subspaces;
2340 amt *= sizeof (asection *);
2341 subspace_sections = bfd_malloc (amt);
2342 if (subspace_sections == NULL)
2343 goto error_return;
2344
2345 for (i = 0, section = abfd->sections; section; section = section->next)
2346 {
2347 if (!som_is_subspace (section))
2348 continue;
2349
2350 subspace_sections[i] = section;
2351 i++;
2352 }
2353 qsort (subspace_sections, total_subspaces,
2354 sizeof (asection *), compare_subspaces);
2355
2356 /* subspace_sections is now sorted in the order in which the subspaces
2357 appear in the object file. Assign an index to each one now. */
2358 for (i = 0; i < total_subspaces; i++)
2359 subspace_sections[i]->target_index = i;
2360
2361 if (space_strings != NULL)
2362 free (space_strings);
2363
2364 if (subspace_sections != NULL)
2365 free (subspace_sections);
2366
2367 return TRUE;
2368
2369 error_return:
2370 if (space_strings != NULL)
2371 free (space_strings);
2372
2373 if (subspace_sections != NULL)
2374 free (subspace_sections);
2375 return FALSE;
2376 }
2377
2378
2379 /* Read in a SOM object and make it into a BFD. */
2380
2381 static const bfd_target *
2382 som_object_p (bfd *abfd)
2383 {
2384 struct som_external_header ext_file_hdr;
2385 struct som_header file_hdr;
2386 struct som_exec_auxhdr *aux_hdr_ptr = NULL;
2387 unsigned long current_offset = 0;
2388 struct som_external_lst_header ext_lst_header;
2389 struct som_external_som_entry ext_som_entry;
2390 bfd_size_type amt;
2391 unsigned int loc;
2392 #define ENTRY_SIZE sizeof (struct som_external_som_entry)
2393
2394 amt = sizeof (struct som_external_header);
2395 if (bfd_bread (&ext_file_hdr, amt, abfd) != amt)
2396 {
2397 if (bfd_get_error () != bfd_error_system_call)
2398 bfd_set_error (bfd_error_wrong_format);
2399 return NULL;
2400 }
2401
2402 som_swap_header_in (&ext_file_hdr, &file_hdr);
2403
2404 if (!_PA_RISC_ID (file_hdr.system_id))
2405 {
2406 bfd_set_error (bfd_error_wrong_format);
2407 return NULL;
2408 }
2409
2410 switch (file_hdr.a_magic)
2411 {
2412 case RELOC_MAGIC:
2413 case EXEC_MAGIC:
2414 case SHARE_MAGIC:
2415 case DEMAND_MAGIC:
2416 case DL_MAGIC:
2417 case SHL_MAGIC:
2418 #ifdef SHARED_MAGIC_CNX
2419 case SHARED_MAGIC_CNX:
2420 #endif
2421 break;
2422
2423 case EXECLIBMAGIC:
2424 /* Read the lst header and determine where the SOM directory begins. */
2425
2426 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
2427 {
2428 if (bfd_get_error () != bfd_error_system_call)
2429 bfd_set_error (bfd_error_wrong_format);
2430 return NULL;
2431 }
2432
2433 amt = sizeof (struct som_external_lst_header);
2434 if (bfd_bread (&ext_lst_header, amt, abfd) != amt)
2435 {
2436 if (bfd_get_error () != bfd_error_system_call)
2437 bfd_set_error (bfd_error_wrong_format);
2438 return NULL;
2439 }
2440
2441 /* Position to and read the first directory entry. */
2442 loc = bfd_getb32 (ext_lst_header.dir_loc);
2443 if (bfd_seek (abfd, loc, SEEK_SET) != 0)
2444 {
2445 if (bfd_get_error () != bfd_error_system_call)
2446 bfd_set_error (bfd_error_wrong_format);
2447 return NULL;
2448 }
2449
2450 amt = ENTRY_SIZE;
2451 if (bfd_bread (&ext_som_entry, amt, abfd) != amt)
2452 {
2453 if (bfd_get_error () != bfd_error_system_call)
2454 bfd_set_error (bfd_error_wrong_format);
2455 return NULL;
2456 }
2457
2458 /* Now position to the first SOM. */
2459 current_offset = bfd_getb32 (ext_som_entry.location);
2460 if (bfd_seek (abfd, current_offset, SEEK_SET) != 0)
2461 {
2462 if (bfd_get_error () != bfd_error_system_call)
2463 bfd_set_error (bfd_error_wrong_format);
2464 return NULL;
2465 }
2466
2467 /* And finally, re-read the som header. */
2468 amt = sizeof (struct som_external_header);
2469 if (bfd_bread (&ext_file_hdr, amt, abfd) != amt)
2470 {
2471 if (bfd_get_error () != bfd_error_system_call)
2472 bfd_set_error (bfd_error_wrong_format);
2473 return NULL;
2474 }
2475
2476 som_swap_header_in (&ext_file_hdr, &file_hdr);
2477
2478 break;
2479
2480 default:
2481 bfd_set_error (bfd_error_wrong_format);
2482 return NULL;
2483 }
2484
2485 if (file_hdr.version_id != OLD_VERSION_ID
2486 && file_hdr.version_id != NEW_VERSION_ID)
2487 {
2488 bfd_set_error (bfd_error_wrong_format);
2489 return NULL;
2490 }
2491
2492 /* If the aux_header_size field in the file header is zero, then this
2493 object is an incomplete executable (a .o file). Do not try to read
2494 a non-existant auxiliary header. */
2495 if (file_hdr.aux_header_size != 0)
2496 {
2497 struct som_external_exec_auxhdr ext_exec_auxhdr;
2498
2499 aux_hdr_ptr = bfd_zalloc (abfd,
2500 (bfd_size_type) sizeof (*aux_hdr_ptr));
2501 if (aux_hdr_ptr == NULL)
2502 return NULL;
2503 amt = sizeof (struct som_external_exec_auxhdr);
2504 if (bfd_bread (&ext_exec_auxhdr, amt, abfd) != amt)
2505 {
2506 if (bfd_get_error () != bfd_error_system_call)
2507 bfd_set_error (bfd_error_wrong_format);
2508 return NULL;
2509 }
2510 som_swap_exec_auxhdr_in (&ext_exec_auxhdr, aux_hdr_ptr);
2511 }
2512
2513 if (!setup_sections (abfd, &file_hdr, current_offset))
2514 {
2515 /* setup_sections does not bubble up a bfd error code. */
2516 bfd_set_error (bfd_error_bad_value);
2517 return NULL;
2518 }
2519
2520 /* This appears to be a valid SOM object. Do some initialization. */
2521 return som_object_setup (abfd, &file_hdr, aux_hdr_ptr, current_offset);
2522 }
2523
2524 /* Create a SOM object. */
2525
2526 static bfd_boolean
2527 som_mkobject (bfd *abfd)
2528 {
2529 /* Allocate memory to hold backend information. */
2530 abfd->tdata.som_data = bfd_zalloc (abfd, (bfd_size_type) sizeof (struct som_data_struct));
2531 if (abfd->tdata.som_data == NULL)
2532 return FALSE;
2533 return TRUE;
2534 }
2535
2536 /* Initialize some information in the file header. This routine makes
2537 not attempt at doing the right thing for a full executable; it
2538 is only meant to handle relocatable objects. */
2539
2540 static bfd_boolean
2541 som_prep_headers (bfd *abfd)
2542 {
2543 struct som_header *file_hdr;
2544 asection *section;
2545 bfd_size_type amt = sizeof (struct som_header);
2546
2547 /* Make and attach a file header to the BFD. */
2548 file_hdr = bfd_zalloc (abfd, amt);
2549 if (file_hdr == NULL)
2550 return FALSE;
2551 obj_som_file_hdr (abfd) = file_hdr;
2552
2553 if (abfd->flags & (EXEC_P | DYNAMIC))
2554 {
2555 /* Make and attach an exec header to the BFD. */
2556 amt = sizeof (struct som_exec_auxhdr);
2557 obj_som_exec_hdr (abfd) = bfd_zalloc (abfd, amt);
2558 if (obj_som_exec_hdr (abfd) == NULL)
2559 return FALSE;
2560
2561 if (abfd->flags & D_PAGED)
2562 file_hdr->a_magic = DEMAND_MAGIC;
2563 else if (abfd->flags & WP_TEXT)
2564 file_hdr->a_magic = SHARE_MAGIC;
2565 #ifdef SHL_MAGIC
2566 else if (abfd->flags & DYNAMIC)
2567 file_hdr->a_magic = SHL_MAGIC;
2568 #endif
2569 else
2570 file_hdr->a_magic = EXEC_MAGIC;
2571 }
2572 else
2573 file_hdr->a_magic = RELOC_MAGIC;
2574
2575 /* These fields are optional, and embedding timestamps is not always
2576 a wise thing to do, it makes comparing objects during a multi-stage
2577 bootstrap difficult. */
2578 file_hdr->file_time.secs = 0;
2579 file_hdr->file_time.nanosecs = 0;
2580
2581 file_hdr->entry_space = 0;
2582 file_hdr->entry_subspace = 0;
2583 file_hdr->entry_offset = 0;
2584 file_hdr->presumed_dp = 0;
2585
2586 /* Now iterate over the sections translating information from
2587 BFD sections to SOM spaces/subspaces. */
2588 for (section = abfd->sections; section != NULL; section = section->next)
2589 {
2590 /* Ignore anything which has not been marked as a space or
2591 subspace. */
2592 if (!som_is_space (section) && !som_is_subspace (section))
2593 continue;
2594
2595 if (som_is_space (section))
2596 {
2597 /* Allocate space for the space dictionary. */
2598 amt = sizeof (struct som_space_dictionary_record);
2599 som_section_data (section)->space_dict = bfd_zalloc (abfd, amt);
2600 if (som_section_data (section)->space_dict == NULL)
2601 return FALSE;
2602 /* Set space attributes. Note most attributes of SOM spaces
2603 are set based on the subspaces it contains. */
2604 som_section_data (section)->space_dict->loader_fix_index = -1;
2605 som_section_data (section)->space_dict->init_pointer_index = -1;
2606
2607 /* Set more attributes that were stuffed away in private data. */
2608 som_section_data (section)->space_dict->sort_key =
2609 som_section_data (section)->copy_data->sort_key;
2610 som_section_data (section)->space_dict->is_defined =
2611 som_section_data (section)->copy_data->is_defined;
2612 som_section_data (section)->space_dict->is_private =
2613 som_section_data (section)->copy_data->is_private;
2614 som_section_data (section)->space_dict->space_number =
2615 som_section_data (section)->copy_data->space_number;
2616 }
2617 else
2618 {
2619 /* Allocate space for the subspace dictionary. */
2620 amt = sizeof (struct som_subspace_dictionary_record);
2621 som_section_data (section)->subspace_dict = bfd_zalloc (abfd, amt);
2622 if (som_section_data (section)->subspace_dict == NULL)
2623 return FALSE;
2624
2625 /* Set subspace attributes. Basic stuff is done here, additional
2626 attributes are filled in later as more information becomes
2627 available. */
2628 if (section->flags & SEC_ALLOC)
2629 som_section_data (section)->subspace_dict->is_loadable = 1;
2630
2631 if (section->flags & SEC_CODE)
2632 som_section_data (section)->subspace_dict->code_only = 1;
2633
2634 som_section_data (section)->subspace_dict->subspace_start =
2635 section->vma;
2636 som_section_data (section)->subspace_dict->subspace_length =
2637 section->size;
2638 som_section_data (section)->subspace_dict->initialization_length =
2639 section->size;
2640 som_section_data (section)->subspace_dict->alignment =
2641 1 << section->alignment_power;
2642
2643 /* Set more attributes that were stuffed away in private data. */
2644 som_section_data (section)->subspace_dict->sort_key =
2645 som_section_data (section)->copy_data->sort_key;
2646 som_section_data (section)->subspace_dict->access_control_bits =
2647 som_section_data (section)->copy_data->access_control_bits;
2648 som_section_data (section)->subspace_dict->quadrant =
2649 som_section_data (section)->copy_data->quadrant;
2650 som_section_data (section)->subspace_dict->is_comdat =
2651 som_section_data (section)->copy_data->is_comdat;
2652 som_section_data (section)->subspace_dict->is_common =
2653 som_section_data (section)->copy_data->is_common;
2654 som_section_data (section)->subspace_dict->dup_common =
2655 som_section_data (section)->copy_data->dup_common;
2656 }
2657 }
2658 return TRUE;
2659 }
2660
2661 /* Return TRUE if the given section is a SOM space, FALSE otherwise. */
2662
2663 static bfd_boolean
2664 som_is_space (asection *section)
2665 {
2666 /* If no copy data is available, then it's neither a space nor a
2667 subspace. */
2668 if (som_section_data (section)->copy_data == NULL)
2669 return FALSE;
2670
2671 /* If the containing space isn't the same as the given section,
2672 then this isn't a space. */
2673 if (som_section_data (section)->copy_data->container != section
2674 && (som_section_data (section)->copy_data->container->output_section
2675 != section))
2676 return FALSE;
2677
2678 /* OK. Must be a space. */
2679 return TRUE;
2680 }
2681
2682 /* Return TRUE if the given section is a SOM subspace, FALSE otherwise. */
2683
2684 static bfd_boolean
2685 som_is_subspace (asection *section)
2686 {
2687 /* If no copy data is available, then it's neither a space nor a
2688 subspace. */
2689 if (som_section_data (section)->copy_data == NULL)
2690 return FALSE;
2691
2692 /* If the containing space is the same as the given section,
2693 then this isn't a subspace. */
2694 if (som_section_data (section)->copy_data->container == section
2695 || (som_section_data (section)->copy_data->container->output_section
2696 == section))
2697 return FALSE;
2698
2699 /* OK. Must be a subspace. */
2700 return TRUE;
2701 }
2702
2703 /* Return TRUE if the given space contains the given subspace. It
2704 is safe to assume space really is a space, and subspace really
2705 is a subspace. */
2706
2707 static bfd_boolean
2708 som_is_container (asection *space, asection *subspace)
2709 {
2710 return (som_section_data (subspace)->copy_data->container == space)
2711 || (som_section_data (subspace)->copy_data->container->output_section
2712 == space);
2713 }
2714
2715 /* Count and return the number of spaces attached to the given BFD. */
2716
2717 static unsigned long
2718 som_count_spaces (bfd *abfd)
2719 {
2720 int count = 0;
2721 asection *section;
2722
2723 for (section = abfd->sections; section != NULL; section = section->next)
2724 count += som_is_space (section);
2725
2726 return count;
2727 }
2728
2729 /* Count the number of subspaces attached to the given BFD. */
2730
2731 static unsigned long
2732 som_count_subspaces (bfd *abfd)
2733 {
2734 int count = 0;
2735 asection *section;
2736
2737 for (section = abfd->sections; section != NULL; section = section->next)
2738 count += som_is_subspace (section);
2739
2740 return count;
2741 }
2742
2743 /* Return -1, 0, 1 indicating the relative ordering of sym1 and sym2.
2744
2745 We desire symbols to be ordered starting with the symbol with the
2746 highest relocation count down to the symbol with the lowest relocation
2747 count. Doing so compacts the relocation stream. */
2748
2749 static int
2750 compare_syms (const void *arg1, const void *arg2)
2751 {
2752 asymbol **sym1 = (asymbol **) arg1;
2753 asymbol **sym2 = (asymbol **) arg2;
2754 unsigned int count1, count2;
2755
2756 /* Get relocation count for each symbol. Note that the count
2757 is stored in the udata pointer for section symbols! */
2758 if ((*sym1)->flags & BSF_SECTION_SYM)
2759 count1 = (*sym1)->udata.i;
2760 else
2761 count1 = som_symbol_data (*sym1)->reloc_count;
2762
2763 if ((*sym2)->flags & BSF_SECTION_SYM)
2764 count2 = (*sym2)->udata.i;
2765 else
2766 count2 = som_symbol_data (*sym2)->reloc_count;
2767
2768 /* Return the appropriate value. */
2769 if (count1 < count2)
2770 return 1;
2771 else if (count1 > count2)
2772 return -1;
2773 return 0;
2774 }
2775
2776 /* Return -1, 0, 1 indicating the relative ordering of subspace1
2777 and subspace. */
2778
2779 static int
2780 compare_subspaces (const void *arg1, const void *arg2)
2781 {
2782 asection **subspace1 = (asection **) arg1;
2783 asection **subspace2 = (asection **) arg2;
2784
2785 if ((*subspace1)->target_index < (*subspace2)->target_index)
2786 return -1;
2787 else if ((*subspace2)->target_index < (*subspace1)->target_index)
2788 return 1;
2789 else
2790 return 0;
2791 }
2792
2793 /* Perform various work in preparation for emitting the fixup stream. */
2794
2795 static void
2796 som_prep_for_fixups (bfd *abfd, asymbol **syms, unsigned long num_syms)
2797 {
2798 unsigned long i;
2799 asection *section;
2800 asymbol **sorted_syms;
2801 bfd_size_type amt;
2802
2803 /* Most SOM relocations involving a symbol have a length which is
2804 dependent on the index of the symbol. So symbols which are
2805 used often in relocations should have a small index. */
2806
2807 /* First initialize the counters for each symbol. */
2808 for (i = 0; i < num_syms; i++)
2809 {
2810 /* Handle a section symbol; these have no pointers back to the
2811 SOM symbol info. So we just use the udata field to hold the
2812 relocation count. */
2813 if (som_symbol_data (syms[i]) == NULL
2814 || syms[i]->flags & BSF_SECTION_SYM)
2815 {
2816 syms[i]->flags |= BSF_SECTION_SYM;
2817 syms[i]->udata.i = 0;
2818 }
2819 else
2820 som_symbol_data (syms[i])->reloc_count = 0;
2821 }
2822
2823 /* Now that the counters are initialized, make a weighted count
2824 of how often a given symbol is used in a relocation. */
2825 for (section = abfd->sections; section != NULL; section = section->next)
2826 {
2827 int j;
2828
2829 /* Does this section have any relocations? */
2830 if ((int) section->reloc_count <= 0)
2831 continue;
2832
2833 /* Walk through each relocation for this section. */
2834 for (j = 1; j < (int) section->reloc_count; j++)
2835 {
2836 arelent *reloc = section->orelocation[j];
2837 int scale;
2838
2839 /* A relocation against a symbol in the *ABS* section really
2840 does not have a symbol. Likewise if the symbol isn't associated
2841 with any section. */
2842 if (reloc->sym_ptr_ptr == NULL
2843 || bfd_is_abs_section ((*reloc->sym_ptr_ptr)->section))
2844 continue;
2845
2846 /* Scaling to encourage symbols involved in R_DP_RELATIVE
2847 and R_CODE_ONE_SYMBOL relocations to come first. These
2848 two relocations have single byte versions if the symbol
2849 index is very small. */
2850 if (reloc->howto->type == R_DP_RELATIVE
2851 || reloc->howto->type == R_CODE_ONE_SYMBOL)
2852 scale = 2;
2853 else
2854 scale = 1;
2855
2856 /* Handle section symbols by storing the count in the udata
2857 field. It will not be used and the count is very important
2858 for these symbols. */
2859 if ((*reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
2860 {
2861 (*reloc->sym_ptr_ptr)->udata.i =
2862 (*reloc->sym_ptr_ptr)->udata.i + scale;
2863 continue;
2864 }
2865
2866 /* A normal symbol. Increment the count. */
2867 som_symbol_data (*reloc->sym_ptr_ptr)->reloc_count += scale;
2868 }
2869 }
2870
2871 /* Sort a copy of the symbol table, rather than the canonical
2872 output symbol table. */
2873 amt = num_syms;
2874 amt *= sizeof (asymbol *);
2875 sorted_syms = bfd_zalloc (abfd, amt);
2876 memcpy (sorted_syms, syms, num_syms * sizeof (asymbol *));
2877 qsort (sorted_syms, num_syms, sizeof (asymbol *), compare_syms);
2878 obj_som_sorted_syms (abfd) = sorted_syms;
2879
2880 /* Compute the symbol indexes, they will be needed by the relocation
2881 code. */
2882 for (i = 0; i < num_syms; i++)
2883 {
2884 /* A section symbol. Again, there is no pointer to backend symbol
2885 information, so we reuse the udata field again. */
2886 if (sorted_syms[i]->flags & BSF_SECTION_SYM)
2887 sorted_syms[i]->udata.i = i;
2888 else
2889 som_symbol_data (sorted_syms[i])->index = i;
2890 }
2891 }
2892
2893 static bfd_boolean
2894 som_write_fixups (bfd *abfd,
2895 unsigned long current_offset,
2896 unsigned int *total_reloc_sizep)
2897 {
2898 unsigned int i, j;
2899 /* Chunk of memory that we can use as buffer space, then throw
2900 away. */
2901 unsigned char tmp_space[SOM_TMP_BUFSIZE];
2902 unsigned char *p;
2903 unsigned int total_reloc_size = 0;
2904 unsigned int subspace_reloc_size = 0;
2905 unsigned int num_spaces = obj_som_file_hdr (abfd)->space_total;
2906 asection *section = abfd->sections;
2907 bfd_size_type amt;
2908
2909 memset (tmp_space, 0, SOM_TMP_BUFSIZE);
2910 p = tmp_space;
2911
2912 /* All the fixups for a particular subspace are emitted in a single
2913 stream. All the subspaces for a particular space are emitted
2914 as a single stream.
2915
2916 So, to get all the locations correct one must iterate through all the
2917 spaces, for each space iterate through its subspaces and output a
2918 fixups stream. */
2919 for (i = 0; i < num_spaces; i++)
2920 {
2921 asection *subsection;
2922
2923 /* Find a space. */
2924 while (!som_is_space (section))
2925 section = section->next;
2926
2927 /* Now iterate through each of its subspaces. */
2928 for (subsection = abfd->sections;
2929 subsection != NULL;
2930 subsection = subsection->next)
2931 {
2932 int reloc_offset;
2933 unsigned int current_rounding_mode;
2934 #ifndef NO_PCREL_MODES
2935 unsigned int current_call_mode;
2936 #endif
2937
2938 /* Find a subspace of this space. */
2939 if (!som_is_subspace (subsection)
2940 || !som_is_container (section, subsection))
2941 continue;
2942
2943 /* If this subspace does not have real data, then we are
2944 finished with it. */
2945 if ((subsection->flags & SEC_HAS_CONTENTS) == 0)
2946 {
2947 som_section_data (subsection)->subspace_dict->fixup_request_index
2948 = -1;
2949 continue;
2950 }
2951
2952 /* This subspace has some relocations. Put the relocation stream
2953 index into the subspace record. */
2954 som_section_data (subsection)->subspace_dict->fixup_request_index
2955 = total_reloc_size;
2956
2957 /* To make life easier start over with a clean slate for
2958 each subspace. Seek to the start of the relocation stream
2959 for this subspace in preparation for writing out its fixup
2960 stream. */
2961 if (bfd_seek (abfd, current_offset + total_reloc_size, SEEK_SET) != 0)
2962 return FALSE;
2963
2964 /* Buffer space has already been allocated. Just perform some
2965 initialization here. */
2966 p = tmp_space;
2967 subspace_reloc_size = 0;
2968 reloc_offset = 0;
2969 som_initialize_reloc_queue (reloc_queue);
2970 current_rounding_mode = R_N_MODE;
2971 #ifndef NO_PCREL_MODES
2972 current_call_mode = R_SHORT_PCREL_MODE;
2973 #endif
2974
2975 /* Translate each BFD relocation into one or more SOM
2976 relocations. */
2977 for (j = 0; j < subsection->reloc_count; j++)
2978 {
2979 arelent *bfd_reloc = subsection->orelocation[j];
2980 unsigned int skip;
2981 int sym_num;
2982
2983 /* Get the symbol number. Remember it's stored in a
2984 special place for section symbols. */
2985 if ((*bfd_reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
2986 sym_num = (*bfd_reloc->sym_ptr_ptr)->udata.i;
2987 else
2988 sym_num = som_symbol_data (*bfd_reloc->sym_ptr_ptr)->index;
2989
2990 /* If there is not enough room for the next couple relocations,
2991 then dump the current buffer contents now. Also reinitialize
2992 the relocation queue.
2993
2994 No single BFD relocation could ever translate into more
2995 than 100 bytes of SOM relocations (20bytes is probably the
2996 upper limit, but leave lots of space for growth). */
2997 if (p - tmp_space + 100 > SOM_TMP_BUFSIZE)
2998 {
2999 amt = p - tmp_space;
3000 if (bfd_bwrite ((void *) tmp_space, amt, abfd) != amt)
3001 return FALSE;
3002
3003 p = tmp_space;
3004 som_initialize_reloc_queue (reloc_queue);
3005 }
3006
3007 /* Emit R_NO_RELOCATION fixups to map any bytes which were
3008 skipped. */
3009 skip = bfd_reloc->address - reloc_offset;
3010 p = som_reloc_skip (abfd, skip, p,
3011 &subspace_reloc_size, reloc_queue);
3012
3013 /* Update reloc_offset for the next iteration.
3014
3015 Many relocations do not consume input bytes. They
3016 are markers, or set state necessary to perform some
3017 later relocation. */
3018 switch (bfd_reloc->howto->type)
3019 {
3020 case R_ENTRY:
3021 case R_ALT_ENTRY:
3022 case R_EXIT:
3023 case R_N_MODE:
3024 case R_S_MODE:
3025 case R_D_MODE:
3026 case R_R_MODE:
3027 case R_FSEL:
3028 case R_LSEL:
3029 case R_RSEL:
3030 case R_COMP1:
3031 case R_COMP2:
3032 case R_BEGIN_BRTAB:
3033 case R_END_BRTAB:
3034 case R_BEGIN_TRY:
3035 case R_END_TRY:
3036 case R_N0SEL:
3037 case R_N1SEL:
3038 #ifndef NO_PCREL_MODES
3039 case R_SHORT_PCREL_MODE:
3040 case R_LONG_PCREL_MODE:
3041 #endif
3042 reloc_offset = bfd_reloc->address;
3043 break;
3044
3045 default:
3046 reloc_offset = bfd_reloc->address + 4;
3047 break;
3048 }
3049
3050 /* Now the actual relocation we care about. */
3051 switch (bfd_reloc->howto->type)
3052 {
3053 case R_PCREL_CALL:
3054 case R_ABS_CALL:
3055 p = som_reloc_call (abfd, p, &subspace_reloc_size,
3056 bfd_reloc, sym_num, reloc_queue);
3057 break;
3058
3059 case R_CODE_ONE_SYMBOL:
3060 case R_DP_RELATIVE:
3061 /* Account for any addend. */
3062 if (bfd_reloc->addend)
3063 p = som_reloc_addend (abfd, bfd_reloc->addend, p,
3064 &subspace_reloc_size, reloc_queue);
3065
3066 if (sym_num < 0x20)
3067 {
3068 bfd_put_8 (abfd, bfd_reloc->howto->type + sym_num, p);
3069 subspace_reloc_size += 1;
3070 p += 1;
3071 }
3072 else if (sym_num < 0x100)
3073 {
3074 bfd_put_8 (abfd, bfd_reloc->howto->type + 32, p);
3075 bfd_put_8 (abfd, sym_num, p + 1);
3076 p = try_prev_fixup (abfd, &subspace_reloc_size, p,
3077 2, reloc_queue);
3078 }
3079 else if (sym_num < 0x10000000)
3080 {
3081 bfd_put_8 (abfd, bfd_reloc->howto->type + 33, p);
3082 bfd_put_8 (abfd, sym_num >> 16, p + 1);
3083 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2);
3084 p = try_prev_fixup (abfd, &subspace_reloc_size,
3085 p, 4, reloc_queue);
3086 }
3087 else
3088 abort ();
3089 break;
3090
3091 case R_DATA_GPREL:
3092 /* Account for any addend. */
3093 if (bfd_reloc->addend)
3094 p = som_reloc_addend (abfd, bfd_reloc->addend, p,
3095 &subspace_reloc_size, reloc_queue);
3096
3097 if (sym_num < 0x10000000)
3098 {
3099 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3100 bfd_put_8 (abfd, sym_num >> 16, p + 1);
3101 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2);
3102 p = try_prev_fixup (abfd, &subspace_reloc_size,
3103 p, 4, reloc_queue);
3104 }
3105 else
3106 abort ();
3107 break;
3108
3109 case R_DATA_ONE_SYMBOL:
3110 case R_DATA_PLABEL:
3111 case R_CODE_PLABEL:
3112 case R_DLT_REL:
3113 /* Account for any addend using R_DATA_OVERRIDE. */
3114 if (bfd_reloc->howto->type != R_DATA_ONE_SYMBOL
3115 && bfd_reloc->addend)
3116 p = som_reloc_addend (abfd, bfd_reloc->addend, p,
3117 &subspace_reloc_size, reloc_queue);
3118
3119 if (sym_num < 0x100)
3120 {
3121 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3122 bfd_put_8 (abfd, sym_num, p + 1);
3123 p = try_prev_fixup (abfd, &subspace_reloc_size, p,
3124 2, reloc_queue);
3125 }
3126 else if (sym_num < 0x10000000)
3127 {
3128 bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p);
3129 bfd_put_8 (abfd, sym_num >> 16, p + 1);
3130 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2);
3131 p = try_prev_fixup (abfd, &subspace_reloc_size,
3132 p, 4, reloc_queue);
3133 }
3134 else
3135 abort ();
3136 break;
3137
3138 case R_ENTRY:
3139 {
3140 unsigned int tmp;
3141 arelent *tmp_reloc = NULL;
3142 bfd_put_8 (abfd, R_ENTRY, p);
3143
3144 /* R_ENTRY relocations have 64 bits of associated
3145 data. Unfortunately the addend field of a bfd
3146 relocation is only 32 bits. So, we split up
3147 the 64bit unwind information and store part in
3148 the R_ENTRY relocation, and the rest in the R_EXIT
3149 relocation. */
3150 bfd_put_32 (abfd, bfd_reloc->addend, p + 1);
3151
3152 /* Find the next R_EXIT relocation. */
3153 for (tmp = j; tmp < subsection->reloc_count; tmp++)
3154 {
3155 tmp_reloc = subsection->orelocation[tmp];
3156 if (tmp_reloc->howto->type == R_EXIT)
3157 break;
3158 }
3159
3160 if (tmp == subsection->reloc_count)
3161 abort ();
3162
3163 bfd_put_32 (abfd, tmp_reloc->addend, p + 5);
3164 p = try_prev_fixup (abfd, &subspace_reloc_size,
3165 p, 9, reloc_queue);
3166 break;
3167 }
3168
3169 case R_N_MODE:
3170 case R_S_MODE:
3171 case R_D_MODE:
3172 case R_R_MODE:
3173 /* If this relocation requests the current rounding
3174 mode, then it is redundant. */
3175 if (bfd_reloc->howto->type != current_rounding_mode)
3176 {
3177 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3178 subspace_reloc_size += 1;
3179 p += 1;
3180 current_rounding_mode = bfd_reloc->howto->type;
3181 }
3182 break;
3183
3184 #ifndef NO_PCREL_MODES
3185 case R_LONG_PCREL_MODE:
3186 case R_SHORT_PCREL_MODE:
3187 if (bfd_reloc->howto->type != current_call_mode)
3188 {
3189 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3190 subspace_reloc_size += 1;
3191 p += 1;
3192 current_call_mode = bfd_reloc->howto->type;
3193 }
3194 break;
3195 #endif
3196
3197 case R_EXIT:
3198 case R_ALT_ENTRY:
3199 case R_FSEL:
3200 case R_LSEL:
3201 case R_RSEL:
3202 case R_BEGIN_BRTAB:
3203 case R_END_BRTAB:
3204 case R_BEGIN_TRY:
3205 case R_N0SEL:
3206 case R_N1SEL:
3207 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3208 subspace_reloc_size += 1;
3209 p += 1;
3210 break;
3211
3212 case R_END_TRY:
3213 /* The end of an exception handling region. The reloc's
3214 addend contains the offset of the exception handling
3215 code. */
3216 if (bfd_reloc->addend == 0)
3217 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3218 else if (bfd_reloc->addend < 1024)
3219 {
3220 bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p);
3221 bfd_put_8 (abfd, bfd_reloc->addend / 4, p + 1);
3222 p = try_prev_fixup (abfd, &subspace_reloc_size,
3223 p, 2, reloc_queue);
3224 }
3225 else
3226 {
3227 bfd_put_8 (abfd, bfd_reloc->howto->type + 2, p);
3228 bfd_put_8 (abfd, (bfd_reloc->addend / 4) >> 16, p + 1);
3229 bfd_put_16 (abfd, bfd_reloc->addend / 4, p + 2);
3230 p = try_prev_fixup (abfd, &subspace_reloc_size,
3231 p, 4, reloc_queue);
3232 }
3233 break;
3234
3235 case R_COMP1:
3236 /* The only time we generate R_COMP1, R_COMP2 and
3237 R_CODE_EXPR relocs is for the difference of two
3238 symbols. Hence we can cheat here. */
3239 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3240 bfd_put_8 (abfd, 0x44, p + 1);
3241 p = try_prev_fixup (abfd, &subspace_reloc_size,
3242 p, 2, reloc_queue);
3243 break;
3244
3245 case R_COMP2:
3246 /* The only time we generate R_COMP1, R_COMP2 and
3247 R_CODE_EXPR relocs is for the difference of two
3248 symbols. Hence we can cheat here. */
3249 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3250 bfd_put_8 (abfd, 0x80, p + 1);
3251 bfd_put_8 (abfd, sym_num >> 16, p + 2);
3252 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 3);
3253 p = try_prev_fixup (abfd, &subspace_reloc_size,
3254 p, 5, reloc_queue);
3255 break;
3256
3257 case R_CODE_EXPR:
3258 case R_DATA_EXPR:
3259 /* The only time we generate R_COMP1, R_COMP2 and
3260 R_CODE_EXPR relocs is for the difference of two
3261 symbols. Hence we can cheat here. */
3262 bfd_put_8 (abfd, bfd_reloc->howto->type, p);
3263 subspace_reloc_size += 1;
3264 p += 1;
3265 break;
3266
3267 /* Put a "R_RESERVED" relocation in the stream if
3268 we hit something we do not understand. The linker
3269 will complain loudly if this ever happens. */
3270 default:
3271 bfd_put_8 (abfd, 0xff, p);
3272 subspace_reloc_size += 1;
3273 p += 1;
3274 break;
3275 }
3276 }
3277
3278 /* Last BFD relocation for a subspace has been processed.
3279 Map the rest of the subspace with R_NO_RELOCATION fixups. */
3280 p = som_reloc_skip (abfd, subsection->size - reloc_offset,
3281 p, &subspace_reloc_size, reloc_queue);
3282
3283 /* Scribble out the relocations. */
3284 amt = p - tmp_space;
3285 if (bfd_bwrite ((void *) tmp_space, amt, abfd) != amt)
3286 return FALSE;
3287 p = tmp_space;
3288
3289 total_reloc_size += subspace_reloc_size;
3290 som_section_data (subsection)->subspace_dict->fixup_request_quantity
3291 = subspace_reloc_size;
3292 }
3293 section = section->next;
3294 }
3295 *total_reloc_sizep = total_reloc_size;
3296 return TRUE;
3297 }
3298
3299 /* Write out the space/subspace string table. */
3300
3301 static bfd_boolean
3302 som_write_space_strings (bfd *abfd,
3303 unsigned long current_offset,
3304 unsigned int *string_sizep)
3305 {
3306 /* Chunk of memory that we can use as buffer space, then throw
3307 away. */
3308 size_t tmp_space_size = SOM_TMP_BUFSIZE;
3309 char *tmp_space = alloca (tmp_space_size);
3310 char *p = tmp_space;
3311 unsigned int strings_size = 0;
3312 asection *section;
3313 bfd_size_type amt;
3314
3315 /* Seek to the start of the space strings in preparation for writing
3316 them out. */
3317 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0)
3318 return FALSE;
3319
3320 /* Walk through all the spaces and subspaces (order is not important)
3321 building up and writing string table entries for their names. */
3322 for (section = abfd->sections; section != NULL; section = section->next)
3323 {
3324 size_t length;
3325
3326 /* Only work with space/subspaces; avoid any other sections
3327 which might have been made (.text for example). */
3328 if (!som_is_space (section) && !som_is_subspace (section))
3329 continue;
3330
3331 /* Get the length of the space/subspace name. */
3332 length = strlen (section->name);
3333
3334 /* If there is not enough room for the next entry, then dump the
3335 current buffer contents now and maybe allocate a larger
3336 buffer. Each entry will take 4 bytes to hold the string
3337 length + the string itself + null terminator. */
3338 if (p - tmp_space + 5 + length > tmp_space_size)
3339 {
3340 /* Flush buffer before refilling or reallocating. */
3341 amt = p - tmp_space;
3342 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt)
3343 return FALSE;
3344
3345 /* Reallocate if now empty buffer still too small. */
3346 if (5 + length > tmp_space_size)
3347 {
3348 /* Ensure a minimum growth factor to avoid O(n**2) space
3349 consumption for n strings. The optimal minimum
3350 factor seems to be 2, as no other value can guarantee
3351 wasting less than 50% space. (Note that we cannot
3352 deallocate space allocated by `alloca' without
3353 returning from this function.) The same technique is
3354 used a few more times below when a buffer is
3355 reallocated. */
3356 if (2 * tmp_space_size < length + 5)
3357 tmp_space_size = length + 5;
3358 else
3359 tmp_space_size = 2 * tmp_space_size;
3360 tmp_space = alloca (tmp_space_size);
3361 }
3362
3363 /* Reset to beginning of the (possibly new) buffer space. */
3364 p = tmp_space;
3365 }
3366
3367 /* First element in a string table entry is the length of the
3368 string. Alignment issues are already handled. */
3369 bfd_put_32 (abfd, (bfd_vma) length, p);
3370 p += 4;
3371 strings_size += 4;
3372
3373 /* Record the index in the space/subspace records. */
3374 if (som_is_space (section))
3375 som_section_data (section)->space_dict->name = strings_size;
3376 else
3377 som_section_data (section)->subspace_dict->name = strings_size;
3378
3379 /* Next comes the string itself + a null terminator. */
3380 strcpy (p, section->name);
3381 p += length + 1;
3382 strings_size += length + 1;
3383
3384 /* Always align up to the next word boundary. */
3385 while (strings_size % 4)
3386 {
3387 bfd_put_8 (abfd, 0, p);
3388 p++;
3389 strings_size++;
3390 }
3391 }
3392
3393 /* Done with the space/subspace strings. Write out any information
3394 contained in a partial block. */
3395 amt = p - tmp_space;
3396 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt)
3397 return FALSE;
3398 *string_sizep = strings_size;
3399 return TRUE;
3400 }
3401
3402 /* Write out the symbol string table. */
3403
3404 static bfd_boolean
3405 som_write_symbol_strings (bfd *abfd,
3406 unsigned long current_offset,
3407 asymbol **syms,
3408 unsigned int num_syms,
3409 unsigned int *string_sizep,
3410 struct som_compilation_unit *compilation_unit)
3411 {
3412 unsigned int i;
3413
3414 /* Chunk of memory that we can use as buffer space, then throw
3415 away. */
3416 size_t tmp_space_size = SOM_TMP_BUFSIZE;
3417 char *tmp_space = alloca (tmp_space_size);
3418 char *p = tmp_space;
3419
3420 unsigned int strings_size = 0;
3421 bfd_size_type amt;
3422
3423 /* This gets a bit gruesome because of the compilation unit. The
3424 strings within the compilation unit are part of the symbol
3425 strings, but don't have symbol_dictionary entries. So, manually
3426 write them and update the compilation unit header. On input, the
3427 compilation unit header contains local copies of the strings.
3428 Move them aside. */
3429
3430 /* Seek to the start of the space strings in preparation for writing
3431 them out. */
3432 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0)
3433 return FALSE;
3434
3435 if (compilation_unit)
3436 {
3437 for (i = 0; i < 4; i++)
3438 {
3439 struct som_name_pt *name;
3440 size_t length;
3441
3442 switch (i)
3443 {
3444 case 0:
3445 name = &compilation_unit->name;
3446 break;
3447 case 1:
3448 name = &compilation_unit->language_name;
3449 break;
3450 case 2:
3451 name = &compilation_unit->product_id;
3452 break;
3453 case 3:
3454 name = &compilation_unit->version_id;
3455 break;
3456 default:
3457 abort ();
3458 }
3459
3460 length = strlen (name->name);
3461
3462 /* If there is not enough room for the next entry, then dump
3463 the current buffer contents now and maybe allocate a
3464 larger buffer. */
3465 if (p - tmp_space + 5 + length > tmp_space_size)
3466 {
3467 /* Flush buffer before refilling or reallocating. */
3468 amt = p - tmp_space;
3469 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt)
3470 return FALSE;
3471
3472 /* Reallocate if now empty buffer still too small. */
3473 if (5 + length > tmp_space_size)
3474 {
3475 /* See alloca above for discussion of new size. */
3476 if (2 * tmp_space_size < 5 + length)
3477 tmp_space_size = 5 + length;
3478 else
3479 tmp_space_size = 2 * tmp_space_size;
3480 tmp_space = alloca (tmp_space_size);
3481 }
3482
3483 /* Reset to beginning of the (possibly new) buffer
3484 space. */
3485 p = tmp_space;
3486 }
3487
3488 /* First element in a string table entry is the length of
3489 the string. This must always be 4 byte aligned. This is
3490 also an appropriate time to fill in the string index
3491 field in the symbol table entry. */
3492 bfd_put_32 (abfd, (bfd_vma) length, p);
3493 strings_size += 4;
3494 p += 4;
3495
3496 /* Next comes the string itself + a null terminator. */
3497 strcpy (p, name->name);
3498
3499 name->strx = strings_size;
3500
3501 p += length + 1;
3502 strings_size += length + 1;
3503
3504 /* Always align up to the next word boundary. */
3505 while (strings_size % 4)
3506 {
3507 bfd_put_8 (abfd, 0, p);
3508 strings_size++;
3509 p++;
3510 }
3511 }
3512 }
3513
3514 for (i = 0; i < num_syms; i++)
3515 {
3516 size_t length = strlen (syms[i]->name);
3517
3518 /* If there is not enough room for the next entry, then dump the
3519 current buffer contents now and maybe allocate a larger buffer. */
3520 if (p - tmp_space + 5 + length > tmp_space_size)
3521 {
3522 /* Flush buffer before refilling or reallocating. */
3523 amt = p - tmp_space;
3524 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt)
3525 return FALSE;
3526
3527 /* Reallocate if now empty buffer still too small. */
3528 if (5 + length > tmp_space_size)
3529 {
3530 /* See alloca above for discussion of new size. */
3531 if (2 * tmp_space_size < 5 + length)
3532 tmp_space_size = 5 + length;
3533 else
3534 tmp_space_size = 2 * tmp_space_size;
3535 tmp_space = alloca (tmp_space_size);
3536 }
3537
3538 /* Reset to beginning of the (possibly new) buffer space. */
3539 p = tmp_space;
3540 }
3541
3542 /* First element in a string table entry is the length of the
3543 string. This must always be 4 byte aligned. This is also
3544 an appropriate time to fill in the string index field in the
3545 symbol table entry. */
3546 bfd_put_32 (abfd, (bfd_vma) length, p);
3547 strings_size += 4;
3548 p += 4;
3549
3550 /* Next comes the string itself + a null terminator. */
3551 strcpy (p, syms[i]->name);
3552
3553 som_symbol_data (syms[i])->stringtab_offset = strings_size;
3554 p += length + 1;
3555 strings_size += length + 1;
3556
3557 /* Always align up to the next word boundary. */
3558 while (strings_size % 4)
3559 {
3560 bfd_put_8 (abfd, 0, p);
3561 strings_size++;
3562 p++;
3563 }
3564 }
3565
3566 /* Scribble out any partial block. */
3567 amt = p - tmp_space;
3568 if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt)
3569 return FALSE;
3570
3571 *string_sizep = strings_size;
3572 return TRUE;
3573 }
3574
3575 /* Compute variable information to be placed in the SOM headers,
3576 space/subspace dictionaries, relocation streams, etc. Begin
3577 writing parts of the object file. */
3578
3579 static bfd_boolean
3580 som_begin_writing (bfd *abfd)
3581 {
3582 unsigned long current_offset = 0;
3583 unsigned int strings_size = 0;
3584 unsigned long num_spaces, num_subspaces, i;
3585 asection *section;
3586 unsigned int total_subspaces = 0;
3587 struct som_exec_auxhdr *exec_header = NULL;
3588
3589 /* The file header will always be first in an object file,
3590 everything else can be in random locations. To keep things
3591 "simple" BFD will lay out the object file in the manner suggested
3592 by the PRO ABI for PA-RISC Systems. */
3593
3594 /* Before any output can really begin offsets for all the major
3595 portions of the object file must be computed. So, starting
3596 with the initial file header compute (and sometimes write)
3597 each portion of the object file. */
3598
3599 /* Make room for the file header, it's contents are not complete
3600 yet, so it can not be written at this time. */
3601 current_offset += sizeof (struct som_external_header);
3602
3603 /* Any auxiliary headers will follow the file header. Right now
3604 we support only the copyright and version headers. */
3605 obj_som_file_hdr (abfd)->aux_header_location = current_offset;
3606 obj_som_file_hdr (abfd)->aux_header_size = 0;
3607 if (abfd->flags & (EXEC_P | DYNAMIC))
3608 {
3609 /* Parts of the exec header will be filled in later, so
3610 delay writing the header itself. Fill in the defaults,
3611 and write it later. */
3612 current_offset += sizeof (struct som_external_exec_auxhdr);
3613 obj_som_file_hdr (abfd)->aux_header_size
3614 += sizeof (struct som_external_exec_auxhdr);
3615 exec_header = obj_som_exec_hdr (abfd);
3616 exec_header->som_auxhdr.type = EXEC_AUX_ID;
3617 exec_header->som_auxhdr.length = 40;
3618 }
3619 if (obj_som_version_hdr (abfd) != NULL)
3620 {
3621 struct som_external_string_auxhdr ext_string_auxhdr;
3622 bfd_size_type len;
3623
3624 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0)
3625 return FALSE;
3626
3627 /* Write the aux_id structure and the string length. */
3628 len = sizeof (struct som_external_string_auxhdr);
3629 obj_som_file_hdr (abfd)->aux_header_size += len;
3630 current_offset += len;
3631 som_swap_string_auxhdr_out
3632 (obj_som_version_hdr (abfd), &ext_string_auxhdr);
3633 if (bfd_bwrite (&ext_string_auxhdr, len, abfd) != len)
3634 return FALSE;
3635
3636 /* Write the version string. */
3637 len = obj_som_version_hdr (abfd)->header_id.length - 4;
3638 obj_som_file_hdr (abfd)->aux_header_size += len;
3639 current_offset += len;
3640 if (bfd_bwrite ((void *) obj_som_version_hdr (abfd)->string, len, abfd)
3641 != len)
3642 return FALSE;
3643 }
3644
3645 if (obj_som_copyright_hdr (abfd) != NULL)
3646 {
3647 struct som_external_string_auxhdr ext_string_auxhdr;
3648 bfd_size_type len;
3649
3650 if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0)
3651 return FALSE;
3652
3653 /* Write the aux_id structure and the string length. */
3654 len = sizeof (struct som_external_string_auxhdr);
3655 obj_som_file_hdr (abfd)->aux_header_size += len;
3656 current_offset += len;
3657 som_swap_string_auxhdr_out
3658 (obj_som_copyright_hdr (abfd), &ext_string_auxhdr);
3659 if (bfd_bwrite (&ext_string_auxhdr, len, abfd) != len)
3660 return FALSE;
3661
3662 /* Write the copyright string. */
3663 len = obj_som_copyright_hdr (abfd)->header_id.length - 4;
3664 obj_som_file_hdr (abfd)->aux_header_size += len;
3665 current_offset += len;
3666 if (bfd_bwrite ((void *) obj_som_copyright_hdr (abfd)->string, len, abfd)
3667 != len)
3668 return FALSE;
3669 }
3670
3671 /* Next comes the initialization pointers; we have no initialization
3672 pointers, so current offset does not change. */
3673 obj_som_file_hdr (abfd)->init_array_location = current_offset;
3674 obj_som_file_hdr (abfd)->init_array_total = 0;
3675
3676 /* Next are the space records. These are fixed length records.
3677
3678 Count the number of spaces to determine how much room is needed
3679 in the object file for the space records.
3680
3681 The names of the spaces are stored in a separate string table,
3682 and the index for each space into the string table is computed
3683 below. Therefore, it is not possible to write the space headers
3684 at this time. */
3685 num_spaces = som_count_spaces (abfd);
3686 obj_som_file_hdr (abfd)->space_location = current_offset;
3687 obj_som_file_hdr (abfd)->space_total = num_spaces;
3688 current_offset +=
3689 num_spaces * sizeof (struct som_external_space_dictionary_record);
3690
3691 /* Next are the subspace records. These are fixed length records.
3692
3693 Count the number of subspaes to determine how much room is needed
3694 in the object file for the subspace records.
3695
3696 A variety if fields in the subspace record are still unknown at
3697 this time (index into string table, fixup stream location/size, etc). */
3698 num_subspaces = som_count_subspaces (abfd);
3699 obj_som_file_hdr (abfd)->subspace_location = current_offset;
3700 obj_som_file_hdr (abfd)->subspace_total = num_subspaces;
3701 current_offset
3702 += num_subspaces * sizeof (struct som_external_subspace_dictionary_record);
3703
3704 /* Next is the string table for the space/subspace names. We will
3705 build and write the string table on the fly. At the same time
3706 we will fill in the space/subspace name index fields. */
3707
3708 /* The string table needs to be aligned on a word boundary. */
3709 if (current_offset % 4)
3710 current_offset += (4 - (current_offset % 4));
3711
3712 /* Mark the offset of the space/subspace string table in the
3713 file header. */
3714 obj_som_file_hdr (abfd)->space_strings_location = current_offset;
3715
3716 /* Scribble out the space strings. */
3717 if (! som_write_space_strings (abfd, current_offset, &strings_size))
3718 return FALSE;
3719
3720 /* Record total string table size in the header and update the
3721 current offset. */
3722 obj_som_file_hdr (abfd)->space_strings_size = strings_size;
3723 current_offset += strings_size;
3724
3725 /* Next is the compilation unit. */
3726 obj_som_file_hdr (abfd)->compiler_location = current_offset;
3727 obj_som_file_hdr (abfd)->compiler_total = 0;
3728 if (obj_som_compilation_unit (abfd))
3729 {
3730 obj_som_file_hdr (abfd)->compiler_total = 1;
3731 current_offset += sizeof (struct som_external_compilation_unit);
3732 }
3733
3734 /* Now compute the file positions for the loadable subspaces, taking
3735 care to make sure everything stays properly aligned. */
3736
3737 section = abfd->sections;
3738 for (i = 0; i < num_spaces; i++)
3739 {
3740 asection *subsection;
3741 int first_subspace;
3742 unsigned int subspace_offset = 0;
3743
3744 /* Find a space. */
3745 while (!som_is_space (section))
3746 section = section->next;
3747
3748 first_subspace = 1;
3749 /* Now look for all its subspaces. */
3750 for (subsection = abfd->sections;
3751 subsection != NULL;
3752 subsection = subsection->next)
3753 {
3754
3755 if (!som_is_subspace (subsection)
3756 || !som_is_container (section, subsection)
3757 || (subsection->flags & SEC_ALLOC) == 0)
3758 continue;
3759
3760 /* If this is the first subspace in the space, and we are
3761 building an executable, then take care to make sure all
3762 the alignments are correct and update the exec header. */
3763 if (first_subspace
3764 && (abfd->flags & (EXEC_P | DYNAMIC)))
3765 {
3766 /* Demand paged executables have each space aligned to a
3767 page boundary. Sharable executables (write-protected
3768 text) have just the private (aka data & bss) space aligned
3769 to a page boundary. Ugh. Not true for HPUX.
3770
3771 The HPUX kernel requires the text to always be page aligned
3772 within the file regardless of the executable's type. */
3773 if (abfd->flags & (D_PAGED | DYNAMIC)
3774 || (subsection->flags & SEC_CODE)
3775 || ((abfd->flags & WP_TEXT)
3776 && (subsection->flags & SEC_DATA)))
3777 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE);
3778
3779 /* Update the exec header. */
3780 if (subsection->flags & SEC_CODE && exec_header->exec_tfile == 0)
3781 {
3782 exec_header->exec_tmem = section->vma;
3783 exec_header->exec_tfile = current_offset;
3784 }
3785 if (subsection->flags & SEC_DATA && exec_header->exec_dfile == 0)
3786 {
3787 exec_header->exec_dmem = section->vma;
3788 exec_header->exec_dfile = current_offset;
3789 }
3790
3791 /* Keep track of exactly where we are within a particular
3792 space. This is necessary as the braindamaged HPUX
3793 loader will create holes between subspaces *and*
3794 subspace alignments are *NOT* preserved. What a crock. */
3795 subspace_offset = subsection->vma;
3796
3797 /* Only do this for the first subspace within each space. */
3798 first_subspace = 0;
3799 }
3800 else if (abfd->flags & (EXEC_P | DYNAMIC))
3801 {
3802 /* The braindamaged HPUX loader may have created a hole
3803 between two subspaces. It is *not* sufficient to use
3804 the alignment specifications within the subspaces to
3805 account for these holes -- I've run into at least one
3806 case where the loader left one code subspace unaligned
3807 in a final executable.
3808
3809 To combat this we keep a current offset within each space,
3810 and use the subspace vma fields to detect and preserve
3811 holes. What a crock!
3812
3813 ps. This is not necessary for unloadable space/subspaces. */
3814 current_offset += subsection->vma - subspace_offset;
3815 if (subsection->flags & SEC_CODE)
3816 exec_header->exec_tsize += subsection->vma - subspace_offset;
3817 else
3818 exec_header->exec_dsize += subsection->vma - subspace_offset;
3819 subspace_offset += subsection->vma - subspace_offset;
3820 }
3821
3822 subsection->target_index = total_subspaces++;
3823 /* This is real data to be loaded from the file. */
3824 if (subsection->flags & SEC_LOAD)
3825 {
3826 /* Update the size of the code & data. */
3827 if (abfd->flags & (EXEC_P | DYNAMIC)
3828 && subsection->flags & SEC_CODE)
3829 exec_header->exec_tsize += subsection->size;
3830 else if (abfd->flags & (EXEC_P | DYNAMIC)
3831 && subsection->flags & SEC_DATA)
3832 exec_header->exec_dsize += subsection->size;
3833 som_section_data (subsection)->subspace_dict->file_loc_init_value
3834 = current_offset;
3835 subsection->filepos = current_offset;
3836 current_offset += subsection->size;
3837 subspace_offset += subsection->size;
3838 }
3839 /* Looks like uninitialized data. */
3840 else
3841 {
3842 /* Update the size of the bss section. */
3843 if (abfd->flags & (EXEC_P | DYNAMIC))
3844 exec_header->exec_bsize += subsection->size;
3845
3846 som_section_data (subsection)->subspace_dict->file_loc_init_value
3847 = 0;
3848 som_section_data (subsection)->subspace_dict->
3849 initialization_length = 0;
3850 }
3851 }
3852 /* Goto the next section. */
3853 section = section->next;
3854 }
3855
3856 /* Finally compute the file positions for unloadable subspaces.
3857 If building an executable, start the unloadable stuff on its
3858 own page. */
3859
3860 if (abfd->flags & (EXEC_P | DYNAMIC))
3861 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE);
3862
3863 obj_som_file_hdr (abfd)->unloadable_sp_location = current_offset;
3864 section = abfd->sections;
3865 for (i = 0; i < num_spaces; i++)
3866 {
3867 asection *subsection;
3868
3869 /* Find a space. */
3870 while (!som_is_space (section))
3871 section = section->next;
3872
3873 if (abfd->flags & (EXEC_P | DYNAMIC))
3874 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE);
3875
3876 /* Now look for all its subspaces. */
3877 for (subsection = abfd->sections;
3878 subsection != NULL;
3879 subsection = subsection->next)
3880 {
3881
3882 if (!som_is_subspace (subsection)
3883 || !som_is_container (section, subsection)
3884 || (subsection->flags & SEC_ALLOC) != 0)
3885 continue;
3886
3887 subsection->target_index = total_subspaces++;
3888 /* This is real data to be loaded from the file. */
3889 if ((subsection->flags & SEC_LOAD) == 0)
3890 {
3891 som_section_data (subsection)->subspace_dict->file_loc_init_value
3892 = current_offset;
3893 subsection->filepos = current_offset;
3894 current_offset += subsection->size;
3895 }
3896 /* Looks like uninitialized data. */
3897 else
3898 {
3899 som_section_data (subsection)->subspace_dict->file_loc_init_value
3900 = 0;
3901 som_section_data (subsection)->subspace_dict->
3902 initialization_length = subsection->size;
3903 }
3904 }
3905 /* Goto the next section. */
3906 section = section->next;
3907 }
3908
3909 /* If building an executable, then make sure to seek to and write
3910 one byte at the end of the file to make sure any necessary
3911 zeros are filled in. Ugh. */
3912 if (abfd->flags & (EXEC_P | DYNAMIC))
3913 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE);
3914 if (bfd_seek (abfd, (file_ptr) current_offset - 1, SEEK_SET) != 0)
3915 return FALSE;
3916 if (bfd_bwrite ((void *) "", (bfd_size_type) 1, abfd) != 1)
3917 return FALSE;
3918
3919 obj_som_file_hdr (abfd)->unloadable_sp_size
3920 = current_offset - obj_som_file_hdr (abfd)->unloadable_sp_location;
3921
3922 /* Loader fixups are not supported in any way shape or form. */
3923 obj_som_file_hdr (abfd)->loader_fixup_location = 0;
3924 obj_som_file_hdr (abfd)->loader_fixup_total = 0;
3925
3926 /* Done. Store the total size of the SOM so far. */
3927 obj_som_file_hdr (abfd)->som_length = current_offset;
3928
3929 return TRUE;
3930 }
3931
3932 /* Finally, scribble out the various headers to the disk. */
3933
3934 static bfd_boolean
3935 som_finish_writing (bfd *abfd)
3936 {
3937 int num_spaces = som_count_spaces (abfd);
3938 asymbol **syms = bfd_get_outsymbols (abfd);
3939 int i, num_syms;
3940 int subspace_index = 0;
3941 file_ptr location;
3942 asection *section;
3943 unsigned long current_offset;
3944 unsigned int strings_size, total_reloc_size;
3945 bfd_size_type amt;
3946 struct som_external_header ext_header;
3947
3948 /* We must set up the version identifier here as objcopy/strip copy
3949 private BFD data too late for us to handle this in som_begin_writing. */
3950 if (obj_som_exec_data (abfd)
3951 && obj_som_exec_data (abfd)->version_id)
3952 obj_som_file_hdr (abfd)->version_id = obj_som_exec_data (abfd)->version_id;
3953 else
3954 obj_som_file_hdr (abfd)->version_id = NEW_VERSION_ID;
3955
3956 /* Next is the symbol table. These are fixed length records.
3957
3958 Count the number of symbols to determine how much room is needed
3959 in the object file for the symbol table.
3960
3961 The names of the symbols are stored in a separate string table,
3962 and the index for each symbol name into the string table is computed
3963 below. Therefore, it is not possible to write the symbol table
3964 at this time.
3965
3966 These used to be output before the subspace contents, but they
3967 were moved here to work around a stupid bug in the hpux linker
3968 (fixed in hpux10). */
3969 current_offset = obj_som_file_hdr (abfd)->som_length;
3970
3971 /* Make sure we're on a word boundary. */
3972 if (current_offset % 4)
3973 current_offset += (4 - (current_offset % 4));
3974
3975 num_syms = bfd_get_symcount (abfd);
3976 obj_som_file_hdr (abfd)->symbol_location = current_offset;
3977 obj_som_file_hdr (abfd)->symbol_total = num_syms;
3978 current_offset +=
3979 num_syms * sizeof (struct som_external_symbol_dictionary_record);
3980
3981 /* Next are the symbol strings.
3982 Align them to a word boundary. */
3983 if (current_offset % 4)
3984 current_offset += (4 - (current_offset % 4));
3985 obj_som_file_hdr (abfd)->symbol_strings_location = current_offset;
3986
3987 /* Scribble out the symbol strings. */
3988 if (! som_write_symbol_strings (abfd, current_offset, syms,
3989 num_syms, &strings_size,
3990 obj_som_compilation_unit (abfd)))
3991 return FALSE;
3992
3993 /* Record total string table size in header and update the
3994 current offset. */
3995 obj_som_file_hdr (abfd)->symbol_strings_size = strings_size;
3996 current_offset += strings_size;
3997
3998 /* Do prep work before handling fixups. */
3999 som_prep_for_fixups (abfd,
4000 bfd_get_outsymbols (abfd),
4001 bfd_get_symcount (abfd));
4002
4003 /* At the end of the file is the fixup stream which starts on a
4004 word boundary. */
4005 if (current_offset % 4)
4006 current_offset += (4 - (current_offset % 4));
4007 obj_som_file_hdr (abfd)->fixup_request_location = current_offset;
4008
4009 /* Write the fixups and update fields in subspace headers which
4010 relate to the fixup stream. */
4011 if (! som_write_fixups (abfd, current_offset, &total_reloc_size))
4012 return FALSE;
4013
4014 /* Record the total size of the fixup stream in the file header. */
4015 obj_som_file_hdr (abfd)->fixup_request_total = total_reloc_size;
4016
4017 /* Done. Store the total size of the SOM. */
4018 obj_som_file_hdr (abfd)->som_length = current_offset + total_reloc_size;
4019
4020 /* Now that the symbol table information is complete, build and
4021 write the symbol table. */
4022 if (! som_build_and_write_symbol_table (abfd))
4023 return FALSE;
4024
4025 /* Subspaces are written first so that we can set up information
4026 about them in their containing spaces as the subspace is written. */
4027
4028 /* Seek to the start of the subspace dictionary records. */
4029 location = obj_som_file_hdr (abfd)->subspace_location;
4030 if (bfd_seek (abfd, location, SEEK_SET) != 0)
4031 return FALSE;
4032
4033 section = abfd->sections;
4034 /* Now for each loadable space write out records for its subspaces. */
4035 for (i = 0; i < num_spaces; i++)
4036 {
4037 asection *subsection;
4038
4039 /* Find a space. */
4040 while (!som_is_space (section))
4041 section = section->next;
4042
4043 /* Now look for all its subspaces. */
4044 for (subsection = abfd->sections;
4045 subsection != NULL;
4046 subsection = subsection->next)
4047 {
4048 struct som_external_subspace_dictionary_record ext_subspace_dict;
4049
4050 /* Skip any section which does not correspond to a space
4051 or subspace. Or does not have SEC_ALLOC set (and therefore
4052 has no real bits on the disk). */
4053 if (!som_is_subspace (subsection)
4054 || !som_is_container (section, subsection)
4055 || (subsection->flags & SEC_ALLOC) == 0)
4056 continue;
4057
4058 /* If this is the first subspace for this space, then save
4059 the index of the subspace in its containing space. Also
4060 set "is_loadable" in the containing space. */
4061
4062 if (som_section_data (section)->space_dict->subspace_quantity == 0)
4063 {
4064 som_section_data (section)->space_dict->is_loadable = 1;
4065 som_section_data (section)->space_dict->subspace_index
4066 = subspace_index;
4067 }
4068
4069 /* Increment the number of subspaces seen and the number of
4070 subspaces contained within the current space. */
4071 subspace_index++;
4072 som_section_data (section)->space_dict->subspace_quantity++;
4073
4074 /* Mark the index of the current space within the subspace's
4075 dictionary record. */
4076 som_section_data (subsection)->subspace_dict->space_index = i;
4077
4078 /* Dump the current subspace header. */
4079 som_swap_subspace_dictionary_record_out
4080 (som_section_data (subsection)->subspace_dict, &ext_subspace_dict);
4081 amt = sizeof (struct som_subspace_dictionary_record);
4082 if (bfd_bwrite (&ext_subspace_dict, amt, abfd) != amt)
4083 return FALSE;
4084 }
4085 /* Goto the next section. */
4086 section = section->next;
4087 }
4088
4089 /* Now repeat the process for unloadable subspaces. */
4090 section = abfd->sections;
4091 /* Now for each space write out records for its subspaces. */
4092 for (i = 0; i < num_spaces; i++)
4093 {
4094 asection *subsection;
4095
4096 /* Find a space. */
4097 while (!som_is_space (section))
4098 section = section->next;
4099
4100 /* Now look for all its subspaces. */
4101 for (subsection = abfd->sections;
4102 subsection != NULL;
4103 subsection = subsection->next)
4104 {
4105 struct som_external_subspace_dictionary_record ext_subspace_dict;
4106
4107 /* Skip any section which does not correspond to a space or
4108 subspace, or which SEC_ALLOC set (and therefore handled
4109 in the loadable spaces/subspaces code above). */
4110
4111 if (!som_is_subspace (subsection)
4112 || !som_is_container (section, subsection)
4113 || (subsection->flags & SEC_ALLOC) != 0)
4114 continue;
4115
4116 /* If this is the first subspace for this space, then save
4117 the index of the subspace in its containing space. Clear
4118 "is_loadable". */
4119
4120 if (som_section_data (section)->space_dict->subspace_quantity == 0)
4121 {
4122 som_section_data (section)->space_dict->is_loadable = 0;
4123 som_section_data (section)->space_dict->subspace_index
4124 = subspace_index;
4125 }
4126
4127 /* Increment the number of subspaces seen and the number of
4128 subspaces contained within the current space. */
4129 som_section_data (section)->space_dict->subspace_quantity++;
4130 subspace_index++;
4131
4132 /* Mark the index of the current space within the subspace's
4133 dictionary record. */
4134 som_section_data (subsection)->subspace_dict->space_index = i;
4135
4136 /* Dump this subspace header. */
4137 som_swap_subspace_dictionary_record_out
4138 (som_section_data (subsection)->subspace_dict, &ext_subspace_dict);
4139 amt = sizeof (struct som_subspace_dictionary_record);
4140 if (bfd_bwrite (&ext_subspace_dict, amt, abfd) != amt)
4141 return FALSE;
4142 }
4143 /* Goto the next section. */
4144 section = section->next;
4145 }
4146
4147 /* All the subspace dictionary records are written, and all the
4148 fields are set up in the space dictionary records.
4149
4150 Seek to the right location and start writing the space
4151 dictionary records. */
4152 location = obj_som_file_hdr (abfd)->space_location;
4153 if (bfd_seek (abfd, location, SEEK_SET) != 0)
4154 return FALSE;
4155
4156 section = abfd->sections;
4157 for (i = 0; i < num_spaces; i++)
4158 {
4159 struct som_external_space_dictionary_record ext_space_dict;
4160
4161 /* Find a space. */
4162 while (!som_is_space (section))
4163 section = section->next;
4164
4165 /* Dump its header. */
4166 som_swap_space_dictionary_out (som_section_data (section)->space_dict,
4167 &ext_space_dict);
4168 amt = sizeof (struct som_external_space_dictionary_record);
4169 if (bfd_bwrite (&ext_space_dict, amt, abfd) != amt)
4170 return FALSE;
4171
4172 /* Goto the next section. */
4173 section = section->next;
4174 }
4175
4176 /* Write the compilation unit record if there is one. */
4177 if (obj_som_compilation_unit (abfd))
4178 {
4179 struct som_external_compilation_unit ext_comp_unit;
4180
4181 location = obj_som_file_hdr (abfd)->compiler_location;
4182 if (bfd_seek (abfd, location, SEEK_SET) != 0)
4183 return FALSE;
4184
4185 som_swap_compilation_unit_out
4186 (obj_som_compilation_unit (abfd), &ext_comp_unit);
4187
4188 amt = sizeof (struct som_external_compilation_unit);
4189 if (bfd_bwrite (&ext_comp_unit, amt, abfd) != amt)
4190 return FALSE;
4191 }
4192
4193 /* Setting of the system_id has to happen very late now that copying of
4194 BFD private data happens *after* section contents are set. */
4195 if (abfd->flags & (EXEC_P | DYNAMIC))
4196 obj_som_file_hdr (abfd)->system_id = obj_som_exec_data (abfd)->system_id;
4197 else if (bfd_get_mach (abfd) == pa20)
4198 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC2_0;
4199 else if (bfd_get_mach (abfd) == pa11)
4200 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC1_1;
4201 else
4202 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC1_0;
4203
4204 /* Swap and compute the checksum for the file header just before writing
4205 the header to disk. */
4206 som_swap_header_out (obj_som_file_hdr (abfd), &ext_header);
4207 bfd_putb32 (som_compute_checksum (&ext_header), ext_header.checksum);
4208
4209 /* Only thing left to do is write out the file header. It is always
4210 at location zero. Seek there and write it. */
4211 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
4212 return FALSE;
4213 amt = sizeof (struct som_external_header);
4214 if (bfd_bwrite (&ext_header, amt, abfd) != amt)
4215 return FALSE;
4216
4217 /* Now write the exec header. */
4218 if (abfd->flags & (EXEC_P | DYNAMIC))
4219 {
4220 long tmp, som_length;
4221 struct som_exec_auxhdr *exec_header;
4222 struct som_external_exec_auxhdr ext_exec_header;
4223
4224 exec_header = obj_som_exec_hdr (abfd);
4225 exec_header->exec_entry = bfd_get_start_address (abfd);
4226 exec_header->exec_flags = obj_som_exec_data (abfd)->exec_flags;
4227
4228 /* Oh joys. Ram some of the BSS data into the DATA section
4229 to be compatible with how the hp linker makes objects
4230 (saves memory space). */
4231 tmp = exec_header->exec_dsize;
4232 tmp = SOM_ALIGN (tmp, PA_PAGESIZE);
4233 exec_header->exec_bsize -= (tmp - exec_header->exec_dsize);
4234 if (exec_header->exec_bsize < 0)
4235 exec_header->exec_bsize = 0;
4236 exec_header->exec_dsize = tmp;
4237
4238 /* Now perform some sanity checks. The idea is to catch bogons now and
4239 inform the user, instead of silently generating a bogus file. */
4240 som_length = obj_som_file_hdr (abfd)->som_length;
4241 if (exec_header->exec_tfile + exec_header->exec_tsize > som_length
4242 || exec_header->exec_dfile + exec_header->exec_dsize > som_length)
4243 {
4244 bfd_set_error (bfd_error_bad_value);
4245 return FALSE;
4246 }
4247
4248 som_swap_exec_auxhdr_out (exec_header, &ext_exec_header);
4249
4250 if (bfd_seek (abfd, obj_som_file_hdr (abfd)->aux_header_location,
4251 SEEK_SET) != 0)
4252 return FALSE;
4253
4254 amt = sizeof (ext_exec_header);
4255 if (bfd_bwrite (&ext_exec_header, amt, abfd) != amt)
4256 return FALSE;
4257 }
4258 return TRUE;
4259 }
4260
4261 /* Compute and return the checksum for a SOM file header. */
4262
4263 static unsigned long
4264 som_compute_checksum (struct som_external_header *hdr)
4265 {
4266 unsigned long checksum, count, i;
4267 unsigned long *buffer = (unsigned long *) hdr;
4268
4269 checksum = 0;
4270 count = sizeof (struct som_external_header) / 4;
4271 for (i = 0; i < count; i++)
4272 checksum ^= *(buffer + i);
4273
4274 return checksum;
4275 }
4276
4277 static void
4278 som_bfd_derive_misc_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
4279 asymbol *sym,
4280 struct som_misc_symbol_info *info)
4281 {
4282 /* Initialize. */
4283 memset (info, 0, sizeof (struct som_misc_symbol_info));
4284
4285 /* The HP SOM linker requires detailed type information about
4286 all symbols (including undefined symbols!). Unfortunately,
4287 the type specified in an import/export statement does not
4288 always match what the linker wants. Severe braindamage. */
4289
4290 /* Section symbols will not have a SOM symbol type assigned to
4291 them yet. Assign all section symbols type ST_DATA. */
4292 if (sym->flags & BSF_SECTION_SYM)
4293 info->symbol_type = ST_DATA;
4294 else
4295 {
4296 /* For BFD style common, the linker will choke unless we set the
4297 type and scope to ST_STORAGE and SS_UNSAT, respectively. */
4298 if (bfd_is_com_section (sym->section))
4299 {
4300 info->symbol_type = ST_STORAGE;
4301 info->symbol_scope = SS_UNSAT;
4302 }
4303
4304 /* It is possible to have a symbol without an associated
4305 type. This happens if the user imported the symbol
4306 without a type and the symbol was never defined
4307 locally. If BSF_FUNCTION is set for this symbol, then
4308 assign it type ST_CODE (the HP linker requires undefined
4309 external functions to have type ST_CODE rather than ST_ENTRY). */
4310 else if ((som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN
4311 || som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE)
4312 && bfd_is_und_section (sym->section)
4313 && sym->flags & BSF_FUNCTION)
4314 info->symbol_type = ST_CODE;
4315
4316 /* Handle function symbols which were defined in this file.
4317 They should have type ST_ENTRY. Also retrieve the argument
4318 relocation bits from the SOM backend information. */
4319 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ENTRY
4320 || (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE
4321 && (sym->flags & BSF_FUNCTION))
4322 || (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN
4323 && (sym->flags & BSF_FUNCTION)))
4324 {
4325 info->symbol_type = ST_ENTRY;
4326 info->arg_reloc = som_symbol_data (sym)->tc_data.ap.hppa_arg_reloc;
4327 info->priv_level= som_symbol_data (sym)->tc_data.ap.hppa_priv_level;
4328 }
4329
4330 /* For unknown symbols set the symbol's type based on the symbol's
4331 section (ST_DATA for DATA sections, ST_CODE for CODE sections). */
4332 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN)
4333 {
4334 if (bfd_is_abs_section (sym->section))
4335 info->symbol_type = ST_ABSOLUTE;
4336 else if (sym->section->flags & SEC_CODE)
4337 info->symbol_type = ST_CODE;
4338 else
4339 info->symbol_type = ST_DATA;
4340 }
4341
4342 /* From now on it's a very simple mapping. */
4343 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ABSOLUTE)
4344 info->symbol_type = ST_ABSOLUTE;
4345 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE)
4346 info->symbol_type = ST_CODE;
4347 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_DATA)
4348 info->symbol_type = ST_DATA;
4349 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_MILLICODE)
4350 info->symbol_type = ST_MILLICODE;
4351 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PLABEL)
4352 info->symbol_type = ST_PLABEL;
4353 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PRI_PROG)
4354 info->symbol_type = ST_PRI_PROG;
4355 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_SEC_PROG)
4356 info->symbol_type = ST_SEC_PROG;
4357 }
4358
4359 /* Now handle the symbol's scope. Exported data which is not
4360 in the common section has scope SS_UNIVERSAL. Note scope
4361 of common symbols was handled earlier! */
4362 if (bfd_is_com_section (sym->section))
4363 ;
4364 else if (bfd_is_und_section (sym->section))
4365 info->symbol_scope = SS_UNSAT;
4366 else if (sym->flags & (BSF_EXPORT | BSF_WEAK))
4367 info->symbol_scope = SS_UNIVERSAL;
4368 /* Anything else which is not in the common section has scope
4369 SS_LOCAL. */
4370 else
4371 info->symbol_scope = SS_LOCAL;
4372
4373 /* Now set the symbol_info field. It has no real meaning
4374 for undefined or common symbols, but the HP linker will
4375 choke if it's not set to some "reasonable" value. We
4376 use zero as a reasonable value. */
4377 if (bfd_is_com_section (sym->section)
4378 || bfd_is_und_section (sym->section)
4379 || bfd_is_abs_section (sym->section))
4380 info->symbol_info = 0;
4381 /* For all other symbols, the symbol_info field contains the
4382 subspace index of the space this symbol is contained in. */
4383 else
4384 info->symbol_info = sym->section->target_index;
4385
4386 /* Set the symbol's value. */
4387 info->symbol_value = sym->value + sym->section->vma;
4388
4389 /* The secondary_def field is for "weak" symbols. */
4390 if (sym->flags & BSF_WEAK)
4391 info->secondary_def = TRUE;
4392 else
4393 info->secondary_def = FALSE;
4394
4395 /* The is_comdat, is_common and dup_common fields provide various
4396 flavors of common.
4397
4398 For data symbols, setting IS_COMMON provides Fortran style common
4399 (duplicate definitions and overlapped initialization). Setting both
4400 IS_COMMON and DUP_COMMON provides Cobol style common (duplicate
4401 definitions as long as they are all the same length). In a shared
4402 link data symbols retain their IS_COMMON and DUP_COMMON flags.
4403 An IS_COMDAT data symbol is similar to a IS_COMMON | DUP_COMMON
4404 symbol except in that it loses its IS_COMDAT flag in a shared link.
4405
4406 For code symbols, IS_COMDAT and DUP_COMMON have effect. Universal
4407 DUP_COMMON code symbols are not exported from shared libraries.
4408 IS_COMDAT symbols are exported but they lose their IS_COMDAT flag.
4409
4410 We take a simplified approach to setting the is_comdat, is_common
4411 and dup_common flags in symbols based on the flag settings of their
4412 subspace. This avoids having to add directives like `.comdat' but
4413 the linker behavior is probably undefined if there is more than one
4414 universal symbol (comdat key sysmbol) in a subspace.
4415
4416 The behavior of these flags is not well documentmented, so there
4417 may be bugs and some surprising interactions with other flags. */
4418 if (som_section_data (sym->section)
4419 && som_section_data (sym->section)->subspace_dict
4420 && info->symbol_scope == SS_UNIVERSAL
4421 && (info->symbol_type == ST_ENTRY
4422 || info->symbol_type == ST_CODE
4423 || info->symbol_type == ST_DATA))
4424 {
4425 info->is_comdat
4426 = som_section_data (sym->section)->subspace_dict->is_comdat;
4427 info->is_common
4428 = som_section_data (sym->section)->subspace_dict->is_common;
4429 info->dup_common
4430 = som_section_data (sym->section)->subspace_dict->dup_common;
4431 }
4432 }
4433
4434 /* Build and write, in one big chunk, the entire symbol table for
4435 this BFD. */
4436
4437 static bfd_boolean
4438 som_build_and_write_symbol_table (bfd *abfd)
4439 {
4440 unsigned int num_syms = bfd_get_symcount (abfd);
4441 file_ptr symtab_location = obj_som_file_hdr (abfd)->symbol_location;
4442 asymbol **bfd_syms = obj_som_sorted_syms (abfd);
4443 struct som_external_symbol_dictionary_record *som_symtab = NULL;
4444 unsigned int i;
4445 bfd_size_type symtab_size;
4446
4447 /* Compute total symbol table size and allocate a chunk of memory
4448 to hold the symbol table as we build it. */
4449 symtab_size = num_syms;
4450 symtab_size *= sizeof (struct som_external_symbol_dictionary_record);
4451 som_symtab = bfd_zmalloc (symtab_size);
4452 if (som_symtab == NULL && symtab_size != 0)
4453 goto error_return;
4454
4455 /* Walk over each symbol. */
4456 for (i = 0; i < num_syms; i++)
4457 {
4458 struct som_misc_symbol_info info;
4459 unsigned int flags;
4460
4461 /* This is really an index into the symbol strings table.
4462 By the time we get here, the index has already been
4463 computed and stored into the name field in the BFD symbol. */
4464 bfd_putb32 (som_symbol_data (bfd_syms[i])->stringtab_offset,
4465 som_symtab[i].name);
4466
4467 /* Derive SOM information from the BFD symbol. */
4468 som_bfd_derive_misc_symbol_info (abfd, bfd_syms[i], &info);
4469
4470 /* Now use it. */
4471 flags = (info.symbol_type << SOM_SYMBOL_TYPE_SH)
4472 | (info.symbol_scope << SOM_SYMBOL_SCOPE_SH)
4473 | (info.arg_reloc << SOM_SYMBOL_ARG_RELOC_SH)
4474 | (3 << SOM_SYMBOL_XLEAST_SH)
4475 | (info.secondary_def ? SOM_SYMBOL_SECONDARY_DEF : 0)
4476 | (info.is_common ? SOM_SYMBOL_IS_COMMON : 0)
4477 | (info.dup_common ? SOM_SYMBOL_DUP_COMMON : 0);
4478 bfd_putb32 (flags, som_symtab[i].flags);
4479
4480 flags = (info.symbol_info << SOM_SYMBOL_SYMBOL_INFO_SH)
4481 | (info.is_comdat ? SOM_SYMBOL_IS_COMDAT : 0);
4482 bfd_putb32 (flags, som_symtab[i].info);
4483 bfd_putb32 (info.symbol_value | info.priv_level,
4484 som_symtab[i].symbol_value);
4485 }
4486
4487 /* Everything is ready, seek to the right location and
4488 scribble out the symbol table. */
4489 if (bfd_seek (abfd, symtab_location, SEEK_SET) != 0)
4490 return FALSE;
4491
4492 if (bfd_bwrite ((void *) som_symtab, symtab_size, abfd) != symtab_size)
4493 goto error_return;
4494
4495 if (som_symtab != NULL)
4496 free (som_symtab);
4497 return TRUE;
4498 error_return:
4499 if (som_symtab != NULL)
4500 free (som_symtab);
4501 return FALSE;
4502 }
4503
4504 /* Write an object in SOM format. */
4505
4506 static bfd_boolean
4507 som_write_object_contents (bfd *abfd)
4508 {
4509 if (! abfd->output_has_begun)
4510 {
4511 /* Set up fixed parts of the file, space, and subspace headers.
4512 Notify the world that output has begun. */
4513 som_prep_headers (abfd);
4514 abfd->output_has_begun = TRUE;
4515 /* Start writing the object file. This include all the string
4516 tables, fixup streams, and other portions of the object file. */
4517 som_begin_writing (abfd);
4518 }
4519
4520 return som_finish_writing (abfd);
4521 }
4522 \f
4523 /* Read and save the string table associated with the given BFD. */
4524
4525 static bfd_boolean
4526 som_slurp_string_table (bfd *abfd)
4527 {
4528 char *stringtab;
4529 bfd_size_type amt;
4530
4531 /* Use the saved version if its available. */
4532 if (obj_som_stringtab (abfd) != NULL)
4533 return TRUE;
4534
4535 /* I don't think this can currently happen, and I'm not sure it should
4536 really be an error, but it's better than getting unpredictable results
4537 from the host's malloc when passed a size of zero. */
4538 if (obj_som_stringtab_size (abfd) == 0)
4539 {
4540 bfd_set_error (bfd_error_no_symbols);
4541 return FALSE;
4542 }
4543
4544 /* Allocate and read in the string table. */
4545 amt = obj_som_stringtab_size (abfd);
4546 stringtab = bfd_zmalloc (amt);
4547 if (stringtab == NULL)
4548 return FALSE;
4549
4550 if (bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET) != 0)
4551 return FALSE;
4552
4553 if (bfd_bread (stringtab, amt, abfd) != amt)
4554 return FALSE;
4555
4556 /* Save our results and return success. */
4557 obj_som_stringtab (abfd) = stringtab;
4558 return TRUE;
4559 }
4560
4561 /* Return the amount of data (in bytes) required to hold the symbol
4562 table for this object. */
4563
4564 static long
4565 som_get_symtab_upper_bound (bfd *abfd)
4566 {
4567 if (!som_slurp_symbol_table (abfd))
4568 return -1;
4569
4570 return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *);
4571 }
4572
4573 /* Convert from a SOM subspace index to a BFD section. */
4574
4575 static asection *
4576 bfd_section_from_som_symbol
4577 (bfd *abfd, struct som_external_symbol_dictionary_record *symbol)
4578 {
4579 asection *section;
4580 unsigned int flags = bfd_getb32 (symbol->flags);
4581 unsigned int symbol_type = (flags >> SOM_SYMBOL_TYPE_SH) & SOM_SYMBOL_TYPE_MASK;
4582
4583 /* The meaning of the symbol_info field changes for functions
4584 within executables. So only use the quick symbol_info mapping for
4585 incomplete objects and non-function symbols in executables. */
4586 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0
4587 || (symbol_type != ST_ENTRY
4588 && symbol_type != ST_PRI_PROG
4589 && symbol_type != ST_SEC_PROG
4590 && symbol_type != ST_MILLICODE))
4591 {
4592 int idx = (bfd_getb32 (symbol->info) >> SOM_SYMBOL_SYMBOL_INFO_SH)
4593 & SOM_SYMBOL_SYMBOL_INFO_MASK;
4594
4595 for (section = abfd->sections; section != NULL; section = section->next)
4596 if (section->target_index == idx && som_is_subspace (section))
4597 return section;
4598 }
4599 else
4600 {
4601 unsigned int value = bfd_getb32 (symbol->symbol_value);
4602
4603 /* For executables we will have to use the symbol's address and
4604 find out what section would contain that address. Yuk. */
4605 for (section = abfd->sections; section; section = section->next)
4606 if (value >= section->vma
4607 && value <= section->vma + section->size
4608 && som_is_subspace (section))
4609 return section;
4610 }
4611
4612 /* Could be a symbol from an external library (such as an OMOS
4613 shared library). Don't abort. */
4614 return bfd_abs_section_ptr;
4615 }
4616
4617 /* Read and save the symbol table associated with the given BFD. */
4618
4619 static unsigned int
4620 som_slurp_symbol_table (bfd *abfd)
4621 {
4622 int symbol_count = bfd_get_symcount (abfd);
4623 int symsize = sizeof (struct som_external_symbol_dictionary_record);
4624 char *stringtab;
4625 struct som_external_symbol_dictionary_record *buf = NULL, *bufp, *endbufp;
4626 som_symbol_type *sym, *symbase;
4627 bfd_size_type amt;
4628
4629 /* Return saved value if it exists. */
4630 if (obj_som_symtab (abfd) != NULL)
4631 goto successful_return;
4632
4633 /* Special case. This is *not* an error. */
4634 if (symbol_count == 0)
4635 goto successful_return;
4636
4637 if (!som_slurp_string_table (abfd))
4638 goto error_return;
4639
4640 stringtab = obj_som_stringtab (abfd);
4641
4642 amt = symbol_count;
4643 amt *= sizeof (som_symbol_type);
4644 symbase = bfd_zmalloc (amt);
4645 if (symbase == NULL)
4646 goto error_return;
4647
4648 /* Read in the external SOM representation. */
4649 amt = symbol_count;
4650 amt *= symsize;
4651 buf = bfd_malloc (amt);
4652 if (buf == NULL && amt != 0)
4653 goto error_return;
4654 if (bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET) != 0)
4655 goto error_return;
4656 if (bfd_bread (buf, amt, abfd) != amt)
4657 goto error_return;
4658
4659 /* Iterate over all the symbols and internalize them. */
4660 endbufp = buf + symbol_count;
4661 for (bufp = buf, sym = symbase; bufp < endbufp; ++bufp)
4662 {
4663 unsigned int flags = bfd_getb32 (bufp->flags);
4664 unsigned int symbol_type =
4665 (flags >> SOM_SYMBOL_TYPE_SH) & SOM_SYMBOL_TYPE_MASK;
4666 unsigned int symbol_scope =
4667 (flags >> SOM_SYMBOL_SCOPE_SH) & SOM_SYMBOL_SCOPE_MASK;
4668
4669 /* I don't think we care about these. */
4670 if (symbol_type == ST_SYM_EXT || symbol_type == ST_ARG_EXT)
4671 continue;
4672
4673 /* Set some private data we care about. */
4674 if (symbol_type == ST_NULL)
4675 som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN;
4676 else if (symbol_type == ST_ABSOLUTE)
4677 som_symbol_data (sym)->som_type = SYMBOL_TYPE_ABSOLUTE;
4678 else if (symbol_type == ST_DATA)
4679 som_symbol_data (sym)->som_type = SYMBOL_TYPE_DATA;
4680 else if (symbol_type == ST_CODE)
4681 som_symbol_data (sym)->som_type = SYMBOL_TYPE_CODE;
4682 else if (symbol_type == ST_PRI_PROG)
4683 som_symbol_data (sym)->som_type = SYMBOL_TYPE_PRI_PROG;
4684 else if (symbol_type == ST_SEC_PROG)
4685 som_symbol_data (sym)->som_type = SYMBOL_TYPE_SEC_PROG;
4686 else if (symbol_type == ST_ENTRY)
4687 som_symbol_data (sym)->som_type = SYMBOL_TYPE_ENTRY;
4688 else if (symbol_type == ST_MILLICODE)
4689 som_symbol_data (sym)->som_type = SYMBOL_TYPE_MILLICODE;
4690 else if (symbol_type == ST_PLABEL)
4691 som_symbol_data (sym)->som_type = SYMBOL_TYPE_PLABEL;
4692 else
4693 som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN;
4694 som_symbol_data (sym)->tc_data.ap.hppa_arg_reloc =
4695 (flags >> SOM_SYMBOL_ARG_RELOC_SH) & SOM_SYMBOL_ARG_RELOC_MASK;
4696
4697 /* Some reasonable defaults. */
4698 sym->symbol.the_bfd = abfd;
4699 sym->symbol.name = bfd_getb32 (bufp->name) + stringtab;
4700 sym->symbol.value = bfd_getb32 (bufp->symbol_value);
4701 sym->symbol.section = 0;
4702 sym->symbol.flags = 0;
4703
4704 switch (symbol_type)
4705 {
4706 case ST_ENTRY:
4707 case ST_MILLICODE:
4708 sym->symbol.flags |= BSF_FUNCTION;
4709 som_symbol_data (sym)->tc_data.ap.hppa_priv_level =
4710 sym->symbol.value & 0x3;
4711 sym->symbol.value &= ~0x3;
4712 break;
4713
4714 case ST_STUB:
4715 case ST_CODE:
4716 case ST_PRI_PROG:
4717 case ST_SEC_PROG:
4718 som_symbol_data (sym)->tc_data.ap.hppa_priv_level =
4719 sym->symbol.value & 0x3;
4720 sym->symbol.value &= ~0x3;
4721 /* If the symbol's scope is SS_UNSAT, then these are
4722 undefined function symbols. */
4723 if (symbol_scope == SS_UNSAT)
4724 sym->symbol.flags |= BSF_FUNCTION;
4725
4726 default:
4727 break;
4728 }
4729
4730 /* Handle scoping and section information. */
4731 switch (symbol_scope)
4732 {
4733 /* symbol_info field is undefined for SS_EXTERNAL and SS_UNSAT symbols,
4734 so the section associated with this symbol can't be known. */
4735 case SS_EXTERNAL:
4736 if (symbol_type != ST_STORAGE)
4737 sym->symbol.section = bfd_und_section_ptr;
4738 else
4739 sym->symbol.section = bfd_com_section_ptr;
4740 sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL);
4741 break;
4742
4743 case SS_UNSAT:
4744 if (symbol_type != ST_STORAGE)
4745 sym->symbol.section = bfd_und_section_ptr;
4746 else
4747 sym->symbol.section = bfd_com_section_ptr;
4748 break;
4749
4750 case SS_UNIVERSAL:
4751 sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL);
4752 sym->symbol.section = bfd_section_from_som_symbol (abfd, bufp);
4753 sym->symbol.value -= sym->symbol.section->vma;
4754 break;
4755
4756 case SS_LOCAL:
4757 sym->symbol.flags |= BSF_LOCAL;
4758 sym->symbol.section = bfd_section_from_som_symbol (abfd, bufp);
4759 sym->symbol.value -= sym->symbol.section->vma;
4760 break;
4761 }
4762
4763 /* Check for a weak symbol. */
4764 if (flags & SOM_SYMBOL_SECONDARY_DEF)
4765 sym->symbol.flags |= BSF_WEAK;
4766
4767 /* Mark section symbols and symbols used by the debugger.
4768 Note $START$ is a magic code symbol, NOT a section symbol. */
4769 if (sym->symbol.name[0] == '$'
4770 && sym->symbol.name[strlen (sym->symbol.name) - 1] == '$'
4771 && !strcmp (sym->symbol.name, sym->symbol.section->name))
4772 sym->symbol.flags |= BSF_SECTION_SYM;
4773 else if (CONST_STRNEQ (sym->symbol.name, "L$0\002"))
4774 {
4775 sym->symbol.flags |= BSF_SECTION_SYM;
4776 sym->symbol.name = sym->symbol.section->name;
4777 }
4778 else if (CONST_STRNEQ (sym->symbol.name, "L$0\001"))
4779 sym->symbol.flags |= BSF_DEBUGGING;
4780
4781 /* Note increment at bottom of loop, since we skip some symbols
4782 we can not include it as part of the for statement. */
4783 sym++;
4784 }
4785
4786 /* We modify the symbol count to record the number of BFD symbols we
4787 created. */
4788 bfd_get_symcount (abfd) = sym - symbase;
4789
4790 /* Save our results and return success. */
4791 obj_som_symtab (abfd) = symbase;
4792 successful_return:
4793 if (buf != NULL)
4794 free (buf);
4795 return (TRUE);
4796
4797 error_return:
4798 if (buf != NULL)
4799 free (buf);
4800 return FALSE;
4801 }
4802
4803 /* Canonicalize a SOM symbol table. Return the number of entries
4804 in the symbol table. */
4805
4806 static long
4807 som_canonicalize_symtab (bfd *abfd, asymbol **location)
4808 {
4809 int i;
4810 som_symbol_type *symbase;
4811
4812 if (!som_slurp_symbol_table (abfd))
4813 return -1;
4814
4815 i = bfd_get_symcount (abfd);
4816 symbase = obj_som_symtab (abfd);
4817
4818 for (; i > 0; i--, location++, symbase++)
4819 *location = &symbase->symbol;
4820
4821 /* Final null pointer. */
4822 *location = 0;
4823 return (bfd_get_symcount (abfd));
4824 }
4825
4826 /* Make a SOM symbol. There is nothing special to do here. */
4827
4828 static asymbol *
4829 som_make_empty_symbol (bfd *abfd)
4830 {
4831 bfd_size_type amt = sizeof (som_symbol_type);
4832 som_symbol_type *new_symbol_type = bfd_zalloc (abfd, amt);
4833
4834 if (new_symbol_type == NULL)
4835 return NULL;
4836 new_symbol_type->symbol.the_bfd = abfd;
4837
4838 return &new_symbol_type->symbol;
4839 }
4840
4841 /* Print symbol information. */
4842
4843 static void
4844 som_print_symbol (bfd *abfd,
4845 void *afile,
4846 asymbol *symbol,
4847 bfd_print_symbol_type how)
4848 {
4849 FILE *file = (FILE *) afile;
4850
4851 switch (how)
4852 {
4853 case bfd_print_symbol_name:
4854 fprintf (file, "%s", symbol->name);
4855 break;
4856 case bfd_print_symbol_more:
4857 fprintf (file, "som ");
4858 fprintf_vma (file, symbol->value);
4859 fprintf (file, " %lx", (long) symbol->flags);
4860 break;
4861 case bfd_print_symbol_all:
4862 {
4863 const char *section_name;
4864
4865 section_name = symbol->section ? symbol->section->name : "(*none*)";
4866 bfd_print_symbol_vandf (abfd, (void *) file, symbol);
4867 fprintf (file, " %s\t%s", section_name, symbol->name);
4868 break;
4869 }
4870 }
4871 }
4872
4873 static bfd_boolean
4874 som_bfd_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
4875 const char *name)
4876 {
4877 return name[0] == 'L' && name[1] == '$';
4878 }
4879
4880 /* Count or process variable-length SOM fixup records.
4881
4882 To avoid code duplication we use this code both to compute the number
4883 of relocations requested by a stream, and to internalize the stream.
4884
4885 When computing the number of relocations requested by a stream the
4886 variables rptr, section, and symbols have no meaning.
4887
4888 Return the number of relocations requested by the fixup stream. When
4889 not just counting
4890
4891 This needs at least two or three more passes to get it cleaned up. */
4892
4893 static unsigned int
4894 som_set_reloc_info (unsigned char *fixup,
4895 unsigned int end,
4896 arelent *internal_relocs,
4897 asection *section,
4898 asymbol **symbols,
4899 bfd_boolean just_count)
4900 {
4901 unsigned int op, varname, deallocate_contents = 0;
4902 unsigned char *end_fixups = &fixup[end];
4903 const struct fixup_format *fp;
4904 const char *cp;
4905 unsigned char *save_fixup;
4906 int variables[26], stack[20], c, v, count, prev_fixup, *sp, saved_unwind_bits;
4907 const int *subop;
4908 arelent *rptr = internal_relocs;
4909 unsigned int offset = 0;
4910
4911 #define var(c) variables[(c) - 'A']
4912 #define push(v) (*sp++ = (v))
4913 #define pop() (*--sp)
4914 #define emptystack() (sp == stack)
4915
4916 som_initialize_reloc_queue (reloc_queue);
4917 memset (variables, 0, sizeof (variables));
4918 memset (stack, 0, sizeof (stack));
4919 count = 0;
4920 prev_fixup = 0;
4921 saved_unwind_bits = 0;
4922 sp = stack;
4923
4924 while (fixup < end_fixups)
4925 {
4926 /* Save pointer to the start of this fixup. We'll use
4927 it later to determine if it is necessary to put this fixup
4928 on the queue. */
4929 save_fixup = fixup;
4930
4931 /* Get the fixup code and its associated format. */
4932 op = *fixup++;
4933 fp = &som_fixup_formats[op];
4934
4935 /* Handle a request for a previous fixup. */
4936 if (*fp->format == 'P')
4937 {
4938 /* Get pointer to the beginning of the prev fixup, move
4939 the repeated fixup to the head of the queue. */
4940 fixup = reloc_queue[fp->D].reloc;
4941 som_reloc_queue_fix (reloc_queue, fp->D);
4942 prev_fixup = 1;
4943
4944 /* Get the fixup code and its associated format. */
4945 op = *fixup++;
4946 fp = &som_fixup_formats[op];
4947 }
4948
4949 /* If this fixup will be passed to BFD, set some reasonable defaults. */
4950 if (! just_count
4951 && som_hppa_howto_table[op].type != R_NO_RELOCATION
4952 && som_hppa_howto_table[op].type != R_DATA_OVERRIDE)
4953 {
4954 rptr->address = offset;
4955 rptr->howto = &som_hppa_howto_table[op];
4956 rptr->addend = 0;
4957 rptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
4958 }
4959
4960 /* Set default input length to 0. Get the opcode class index
4961 into D. */
4962 var ('L') = 0;
4963 var ('D') = fp->D;
4964 var ('U') = saved_unwind_bits;
4965
4966 /* Get the opcode format. */
4967 cp = fp->format;
4968
4969 /* Process the format string. Parsing happens in two phases,
4970 parse RHS, then assign to LHS. Repeat until no more
4971 characters in the format string. */
4972 while (*cp)
4973 {
4974 /* The variable this pass is going to compute a value for. */
4975 varname = *cp++;
4976
4977 /* Start processing RHS. Continue until a NULL or '=' is found. */
4978 do
4979 {
4980 c = *cp++;
4981
4982 /* If this is a variable, push it on the stack. */
4983 if (ISUPPER (c))
4984 push (var (c));
4985
4986 /* If this is a lower case letter, then it represents
4987 additional data from the fixup stream to be pushed onto
4988 the stack. */
4989 else if (ISLOWER (c))
4990 {
4991 int bits = (c - 'a') * 8;
4992 for (v = 0; c > 'a'; --c)
4993 v = (v << 8) | *fixup++;
4994 if (varname == 'V')
4995 v = sign_extend (v, bits);
4996 push (v);
4997 }
4998
4999 /* A decimal constant. Push it on the stack. */
5000 else if (ISDIGIT (c))
5001 {
5002 v = c - '0';
5003 while (ISDIGIT (*cp))
5004 v = (v * 10) + (*cp++ - '0');
5005 push (v);
5006 }
5007 else
5008 /* An operator. Pop two two values from the stack and
5009 use them as operands to the given operation. Push
5010 the result of the operation back on the stack. */
5011 switch (c)
5012 {
5013 case '+':
5014 v = pop ();
5015 v += pop ();
5016 push (v);
5017 break;
5018 case '*':
5019 v = pop ();
5020 v *= pop ();
5021 push (v);
5022 break;
5023 case '<':
5024 v = pop ();
5025 v = pop () << v;
5026 push (v);
5027 break;
5028 default:
5029 abort ();
5030 }
5031 }
5032 while (*cp && *cp != '=');
5033
5034 /* Move over the equal operator. */
5035 cp++;
5036
5037 /* Pop the RHS off the stack. */
5038 c = pop ();
5039
5040 /* Perform the assignment. */
5041 var (varname) = c;
5042
5043 /* Handle side effects. and special 'O' stack cases. */
5044 switch (varname)
5045 {
5046 /* Consume some bytes from the input space. */
5047 case 'L':
5048 offset += c;
5049 break;
5050 /* A symbol to use in the relocation. Make a note
5051 of this if we are not just counting. */
5052 case 'S':
5053 if (! just_count)
5054 rptr->sym_ptr_ptr = &symbols[c];
5055 break;
5056 /* Argument relocation bits for a function call. */
5057 case 'R':
5058 if (! just_count)
5059 {
5060 unsigned int tmp = var ('R');
5061 rptr->addend = 0;
5062
5063 if ((som_hppa_howto_table[op].type == R_PCREL_CALL
5064 && R_PCREL_CALL + 10 > op)
5065 || (som_hppa_howto_table[op].type == R_ABS_CALL
5066 && R_ABS_CALL + 10 > op))
5067 {
5068 /* Simple encoding. */
5069 if (tmp > 4)
5070 {
5071 tmp -= 5;
5072 rptr->addend |= 1;
5073 }
5074 if (tmp == 4)
5075 rptr->addend |= 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2;
5076 else if (tmp == 3)
5077 rptr->addend |= 1 << 8 | 1 << 6 | 1 << 4;
5078 else if (tmp == 2)
5079 rptr->addend |= 1 << 8 | 1 << 6;
5080 else if (tmp == 1)
5081 rptr->addend |= 1 << 8;
5082 }
5083 else
5084 {
5085 unsigned int tmp1, tmp2;
5086
5087 /* First part is easy -- low order two bits are
5088 directly copied, then shifted away. */
5089 rptr->addend = tmp & 0x3;
5090 tmp >>= 2;
5091
5092 /* Diving the result by 10 gives us the second
5093 part. If it is 9, then the first two words
5094 are a double precision paramater, else it is
5095 3 * the first arg bits + the 2nd arg bits. */
5096 tmp1 = tmp / 10;
5097 tmp -= tmp1 * 10;
5098 if (tmp1 == 9)
5099 rptr->addend += (0xe << 6);
5100 else
5101 {
5102 /* Get the two pieces. */
5103 tmp2 = tmp1 / 3;
5104 tmp1 -= tmp2 * 3;
5105 /* Put them in the addend. */
5106 rptr->addend += (tmp2 << 8) + (tmp1 << 6);
5107 }
5108
5109 /* What's left is the third part. It's unpacked
5110 just like the second. */
5111 if (tmp == 9)
5112 rptr->addend += (0xe << 2);
5113 else
5114 {
5115 tmp2 = tmp / 3;
5116 tmp -= tmp2 * 3;
5117 rptr->addend += (tmp2 << 4) + (tmp << 2);
5118 }
5119 }
5120 rptr->addend = HPPA_R_ADDEND (rptr->addend, 0);
5121 }
5122 break;
5123 /* Handle the linker expression stack. */
5124 case 'O':
5125 switch (op)
5126 {
5127 case R_COMP1:
5128 subop = comp1_opcodes;
5129 break;
5130 case R_COMP2:
5131 subop = comp2_opcodes;
5132 break;
5133 case R_COMP3:
5134 subop = comp3_opcodes;
5135 break;
5136 default:
5137 abort ();
5138 }
5139 while (*subop <= (unsigned char) c)
5140 ++subop;
5141 --subop;
5142 break;
5143 /* The lower 32unwind bits must be persistent. */
5144 case 'U':
5145 saved_unwind_bits = var ('U');
5146 break;
5147
5148 default:
5149 break;
5150 }
5151 }
5152
5153 /* If we used a previous fixup, clean up after it. */
5154 if (prev_fixup)
5155 {
5156 fixup = save_fixup + 1;
5157 prev_fixup = 0;
5158 }
5159 /* Queue it. */
5160 else if (fixup > save_fixup + 1)
5161 som_reloc_queue_insert (save_fixup, fixup - save_fixup, reloc_queue);
5162
5163 /* We do not pass R_DATA_OVERRIDE or R_NO_RELOCATION
5164 fixups to BFD. */
5165 if (som_hppa_howto_table[op].type != R_DATA_OVERRIDE
5166 && som_hppa_howto_table[op].type != R_NO_RELOCATION)
5167 {
5168 /* Done with a single reloction. Loop back to the top. */
5169 if (! just_count)
5170 {
5171 if (som_hppa_howto_table[op].type == R_ENTRY)
5172 rptr->addend = var ('T');
5173 else if (som_hppa_howto_table[op].type == R_EXIT)
5174 rptr->addend = var ('U');
5175 else if (som_hppa_howto_table[op].type == R_PCREL_CALL
5176 || som_hppa_howto_table[op].type == R_ABS_CALL)
5177 ;
5178 else if (som_hppa_howto_table[op].type == R_DATA_ONE_SYMBOL)
5179 {
5180 /* Try what was specified in R_DATA_OVERRIDE first
5181 (if anything). Then the hard way using the
5182 section contents. */
5183 rptr->addend = var ('V');
5184
5185 if (rptr->addend == 0 && !section->contents)
5186 {
5187 /* Got to read the damn contents first. We don't
5188 bother saving the contents (yet). Add it one
5189 day if the need arises. */
5190 bfd_byte *contents;
5191 if (!bfd_malloc_and_get_section (section->owner, section,
5192 &contents))
5193 {
5194 if (contents != NULL)
5195 free (contents);
5196 return (unsigned) -1;
5197 }
5198 section->contents = contents;
5199 deallocate_contents = 1;
5200 }
5201 else if (rptr->addend == 0)
5202 rptr->addend = bfd_get_32 (section->owner,
5203 (section->contents
5204 + offset - var ('L')));
5205
5206 }
5207 else
5208 rptr->addend = var ('V');
5209 rptr++;
5210 }
5211 count++;
5212 /* Now that we've handled a "full" relocation, reset
5213 some state. */
5214 memset (variables, 0, sizeof (variables));
5215 memset (stack, 0, sizeof (stack));
5216 }
5217 }
5218 if (deallocate_contents)
5219 free (section->contents);
5220
5221 return count;
5222
5223 #undef var
5224 #undef push
5225 #undef pop
5226 #undef emptystack
5227 }
5228
5229 /* Read in the relocs (aka fixups in SOM terms) for a section.
5230
5231 som_get_reloc_upper_bound calls this routine with JUST_COUNT
5232 set to TRUE to indicate it only needs a count of the number
5233 of actual relocations. */
5234
5235 static bfd_boolean
5236 som_slurp_reloc_table (bfd *abfd,
5237 asection *section,
5238 asymbol **symbols,
5239 bfd_boolean just_count)
5240 {
5241 unsigned char *external_relocs;
5242 unsigned int fixup_stream_size;
5243 arelent *internal_relocs;
5244 unsigned int num_relocs;
5245 bfd_size_type amt;
5246
5247 fixup_stream_size = som_section_data (section)->reloc_size;
5248 /* If there were no relocations, then there is nothing to do. */
5249 if (section->reloc_count == 0)
5250 return TRUE;
5251
5252 /* If reloc_count is -1, then the relocation stream has not been
5253 parsed. We must do so now to know how many relocations exist. */
5254 if (section->reloc_count == (unsigned) -1)
5255 {
5256 amt = fixup_stream_size;
5257 external_relocs = bfd_malloc (amt);
5258 if (external_relocs == NULL)
5259 return FALSE;
5260 /* Read in the external forms. */
5261 if (bfd_seek (abfd,
5262 obj_som_reloc_filepos (abfd) + section->rel_filepos,
5263 SEEK_SET)
5264 != 0)
5265 return FALSE;
5266 if (bfd_bread (external_relocs, amt, abfd) != amt)
5267 return FALSE;
5268
5269 /* Let callers know how many relocations found.
5270 also save the relocation stream as we will
5271 need it again. */
5272 section->reloc_count = som_set_reloc_info (external_relocs,
5273 fixup_stream_size,
5274 NULL, NULL, NULL, TRUE);
5275
5276 som_section_data (section)->reloc_stream = external_relocs;
5277 }
5278
5279 /* If the caller only wanted a count, then return now. */
5280 if (just_count)
5281 return TRUE;
5282
5283 num_relocs = section->reloc_count;
5284 external_relocs = som_section_data (section)->reloc_stream;
5285 /* Return saved information about the relocations if it is available. */
5286 if (section->relocation != NULL)
5287 return TRUE;
5288
5289 amt = num_relocs;
5290 amt *= sizeof (arelent);
5291 internal_relocs = bfd_zalloc (abfd, (amt));
5292 if (internal_relocs == NULL)
5293 return FALSE;
5294
5295 /* Process and internalize the relocations. */
5296 som_set_reloc_info (external_relocs, fixup_stream_size,
5297 internal_relocs, section, symbols, FALSE);
5298
5299 /* We're done with the external relocations. Free them. */
5300 free (external_relocs);
5301 som_section_data (section)->reloc_stream = NULL;
5302
5303 /* Save our results and return success. */
5304 section->relocation = internal_relocs;
5305 return TRUE;
5306 }
5307
5308 /* Return the number of bytes required to store the relocation
5309 information associated with the given section. */
5310
5311 static long
5312 som_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
5313 {
5314 /* If section has relocations, then read in the relocation stream
5315 and parse it to determine how many relocations exist. */
5316 if (asect->flags & SEC_RELOC)
5317 {
5318 if (! som_slurp_reloc_table (abfd, asect, NULL, TRUE))
5319 return -1;
5320 return (asect->reloc_count + 1) * sizeof (arelent *);
5321 }
5322
5323 /* There are no relocations. Return enough space to hold the
5324 NULL pointer which will be installed if som_canonicalize_reloc
5325 is called. */
5326 return sizeof (arelent *);
5327 }
5328
5329 /* Convert relocations from SOM (external) form into BFD internal
5330 form. Return the number of relocations. */
5331
5332 static long
5333 som_canonicalize_reloc (bfd *abfd,
5334 sec_ptr section,
5335 arelent **relptr,
5336 asymbol **symbols)
5337 {
5338 arelent *tblptr;
5339 int count;
5340
5341 if (! som_slurp_reloc_table (abfd, section, symbols, FALSE))
5342 return -1;
5343
5344 count = section->reloc_count;
5345 tblptr = section->relocation;
5346
5347 while (count--)
5348 *relptr++ = tblptr++;
5349
5350 *relptr = NULL;
5351 return section->reloc_count;
5352 }
5353
5354 extern const bfd_target som_vec;
5355
5356 /* A hook to set up object file dependent section information. */
5357
5358 static bfd_boolean
5359 som_new_section_hook (bfd *abfd, asection *newsect)
5360 {
5361 if (!newsect->used_by_bfd)
5362 {
5363 bfd_size_type amt = sizeof (struct som_section_data_struct);
5364
5365 newsect->used_by_bfd = bfd_zalloc (abfd, amt);
5366 if (!newsect->used_by_bfd)
5367 return FALSE;
5368 }
5369 newsect->alignment_power = 3;
5370
5371 /* We allow more than three sections internally. */
5372 return _bfd_generic_new_section_hook (abfd, newsect);
5373 }
5374
5375 /* Copy any private info we understand from the input symbol
5376 to the output symbol. */
5377
5378 static bfd_boolean
5379 som_bfd_copy_private_symbol_data (bfd *ibfd,
5380 asymbol *isymbol,
5381 bfd *obfd,
5382 asymbol *osymbol)
5383 {
5384 struct som_symbol *input_symbol = (struct som_symbol *) isymbol;
5385 struct som_symbol *output_symbol = (struct som_symbol *) osymbol;
5386
5387 /* One day we may try to grok other private data. */
5388 if (ibfd->xvec->flavour != bfd_target_som_flavour
5389 || obfd->xvec->flavour != bfd_target_som_flavour)
5390 return FALSE;
5391
5392 /* The only private information we need to copy is the argument relocation
5393 bits. */
5394 output_symbol->tc_data.ap.hppa_arg_reloc =
5395 input_symbol->tc_data.ap.hppa_arg_reloc;
5396
5397 return TRUE;
5398 }
5399
5400 /* Copy any private info we understand from the input section
5401 to the output section. */
5402
5403 static bfd_boolean
5404 som_bfd_copy_private_section_data (bfd *ibfd,
5405 asection *isection,
5406 bfd *obfd,
5407 asection *osection)
5408 {
5409 bfd_size_type amt;
5410
5411 /* One day we may try to grok other private data. */
5412 if (ibfd->xvec->flavour != bfd_target_som_flavour
5413 || obfd->xvec->flavour != bfd_target_som_flavour
5414 || (!som_is_space (isection) && !som_is_subspace (isection)))
5415 return TRUE;
5416
5417 amt = sizeof (struct som_copyable_section_data_struct);
5418 som_section_data (osection)->copy_data = bfd_zalloc (obfd, amt);
5419 if (som_section_data (osection)->copy_data == NULL)
5420 return FALSE;
5421
5422 memcpy (som_section_data (osection)->copy_data,
5423 som_section_data (isection)->copy_data,
5424 sizeof (struct som_copyable_section_data_struct));
5425
5426 /* Reparent if necessary. */
5427 if (som_section_data (osection)->copy_data->container)
5428 som_section_data (osection)->copy_data->container =
5429 som_section_data (osection)->copy_data->container->output_section;
5430
5431 return TRUE;
5432 }
5433
5434 /* Copy any private info we understand from the input bfd
5435 to the output bfd. */
5436
5437 static bfd_boolean
5438 som_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
5439 {
5440 /* One day we may try to grok other private data. */
5441 if (ibfd->xvec->flavour != bfd_target_som_flavour
5442 || obfd->xvec->flavour != bfd_target_som_flavour)
5443 return TRUE;
5444
5445 /* Allocate some memory to hold the data we need. */
5446 obj_som_exec_data (obfd) = bfd_zalloc (obfd, (bfd_size_type) sizeof (struct som_exec_data));
5447 if (obj_som_exec_data (obfd) == NULL)
5448 return FALSE;
5449
5450 /* Now copy the data. */
5451 memcpy (obj_som_exec_data (obfd), obj_som_exec_data (ibfd),
5452 sizeof (struct som_exec_data));
5453
5454 return TRUE;
5455 }
5456
5457 /* Display the SOM header. */
5458
5459 static bfd_boolean
5460 som_bfd_print_private_bfd_data (bfd *abfd, void *farg)
5461 {
5462 struct som_exec_auxhdr *exec_header;
5463 struct som_aux_id* auxhdr;
5464 FILE *f;
5465
5466 f = (FILE *) farg;
5467
5468 exec_header = obj_som_exec_hdr (abfd);
5469 if (exec_header)
5470 {
5471 fprintf (f, _("\nExec Auxiliary Header\n"));
5472 fprintf (f, " flags ");
5473 auxhdr = &exec_header->som_auxhdr;
5474 if (auxhdr->mandatory)
5475 fprintf (f, "mandatory ");
5476 if (auxhdr->copy)
5477 fprintf (f, "copy ");
5478 if (auxhdr->append)
5479 fprintf (f, "append ");
5480 if (auxhdr->ignore)
5481 fprintf (f, "ignore ");
5482 fprintf (f, "\n");
5483 fprintf (f, " type %#x\n", auxhdr->type);
5484 fprintf (f, " length %#x\n", auxhdr->length);
5485
5486 /* Note that, depending on the HP-UX version, the following fields can be
5487 either ints, or longs. */
5488
5489 fprintf (f, " text size %#lx\n", (long) exec_header->exec_tsize);
5490 fprintf (f, " text memory offset %#lx\n", (long) exec_header->exec_tmem);
5491 fprintf (f, " text file offset %#lx\n", (long) exec_header->exec_tfile);
5492 fprintf (f, " data size %#lx\n", (long) exec_header->exec_dsize);
5493 fprintf (f, " data memory offset %#lx\n", (long) exec_header->exec_dmem);
5494 fprintf (f, " data file offset %#lx\n", (long) exec_header->exec_dfile);
5495 fprintf (f, " bss size %#lx\n", (long) exec_header->exec_bsize);
5496 fprintf (f, " entry point %#lx\n", (long) exec_header->exec_entry);
5497 fprintf (f, " loader flags %#lx\n", (long) exec_header->exec_flags);
5498 fprintf (f, " bss initializer %#lx\n", (long) exec_header->exec_bfill);
5499 }
5500
5501 return TRUE;
5502 }
5503
5504 /* Set backend info for sections which can not be described
5505 in the BFD data structures. */
5506
5507 bfd_boolean
5508 bfd_som_set_section_attributes (asection *section,
5509 int defined,
5510 int private,
5511 unsigned int sort_key,
5512 int spnum)
5513 {
5514 /* Allocate memory to hold the magic information. */
5515 if (som_section_data (section)->copy_data == NULL)
5516 {
5517 bfd_size_type amt = sizeof (struct som_copyable_section_data_struct);
5518
5519 som_section_data (section)->copy_data = bfd_zalloc (section->owner, amt);
5520 if (som_section_data (section)->copy_data == NULL)
5521 return FALSE;
5522 }
5523 som_section_data (section)->copy_data->sort_key = sort_key;
5524 som_section_data (section)->copy_data->is_defined = defined;
5525 som_section_data (section)->copy_data->is_private = private;
5526 som_section_data (section)->copy_data->container = section;
5527 som_section_data (section)->copy_data->space_number = spnum;
5528 return TRUE;
5529 }
5530
5531 /* Set backend info for subsections which can not be described
5532 in the BFD data structures. */
5533
5534 bfd_boolean
5535 bfd_som_set_subsection_attributes (asection *section,
5536 asection *container,
5537 int access_ctr,
5538 unsigned int sort_key,
5539 int quadrant,
5540 int comdat,
5541 int common,
5542 int dup_common)
5543 {
5544 /* Allocate memory to hold the magic information. */
5545 if (som_section_data (section)->copy_data == NULL)
5546 {
5547 bfd_size_type amt = sizeof (struct som_copyable_section_data_struct);
5548
5549 som_section_data (section)->copy_data = bfd_zalloc (section->owner, amt);
5550 if (som_section_data (section)->copy_data == NULL)
5551 return FALSE;
5552 }
5553 som_section_data (section)->copy_data->sort_key = sort_key;
5554 som_section_data (section)->copy_data->access_control_bits = access_ctr;
5555 som_section_data (section)->copy_data->quadrant = quadrant;
5556 som_section_data (section)->copy_data->container = container;
5557 som_section_data (section)->copy_data->is_comdat = comdat;
5558 som_section_data (section)->copy_data->is_common = common;
5559 som_section_data (section)->copy_data->dup_common = dup_common;
5560 return TRUE;
5561 }
5562
5563 /* Set the full SOM symbol type. SOM needs far more symbol information
5564 than any other object file format I'm aware of. It is mandatory
5565 to be able to know if a symbol is an entry point, millicode, data,
5566 code, absolute, storage request, or procedure label. If you get
5567 the symbol type wrong your program will not link. */
5568
5569 void
5570 bfd_som_set_symbol_type (asymbol *symbol, unsigned int type)
5571 {
5572 som_symbol_data (symbol)->som_type = type;
5573 }
5574
5575 /* Attach an auxiliary header to the BFD backend so that it may be
5576 written into the object file. */
5577
5578 bfd_boolean
5579 bfd_som_attach_aux_hdr (bfd *abfd, int type, char *string)
5580 {
5581 bfd_size_type amt;
5582
5583 if (type == VERSION_AUX_ID)
5584 {
5585 size_t len = strlen (string);
5586 int pad = 0;
5587
5588 if (len % 4)
5589 pad = (4 - (len % 4));
5590 amt = sizeof (struct som_string_auxhdr) + len + pad;
5591 obj_som_version_hdr (abfd) = bfd_zalloc (abfd, amt);
5592 if (!obj_som_version_hdr (abfd))
5593 return FALSE;
5594 obj_som_version_hdr (abfd)->header_id.type = VERSION_AUX_ID;
5595 obj_som_version_hdr (abfd)->header_id.length = 4 + len + pad;
5596 obj_som_version_hdr (abfd)->string_length = len;
5597 memcpy (obj_som_version_hdr (abfd)->string, string, len);
5598 memset (obj_som_version_hdr (abfd)->string + len, 0, pad);
5599 }
5600 else if (type == COPYRIGHT_AUX_ID)
5601 {
5602 int len = strlen (string);
5603 int pad = 0;
5604
5605 if (len % 4)
5606 pad = (4 - (len % 4));
5607 amt = sizeof (struct som_string_auxhdr) + len + pad;
5608 obj_som_copyright_hdr (abfd) = bfd_zalloc (abfd, amt);
5609 if (!obj_som_copyright_hdr (abfd))
5610 return FALSE;
5611 obj_som_copyright_hdr (abfd)->header_id.type = COPYRIGHT_AUX_ID;
5612 obj_som_copyright_hdr (abfd)->header_id.length = len + pad + 4;
5613 obj_som_copyright_hdr (abfd)->string_length = len;
5614 memcpy (obj_som_copyright_hdr (abfd)->string, string, len);
5615 memset (obj_som_copyright_hdr (abfd)->string + len, 0, pad);
5616 }
5617 return TRUE;
5618 }
5619
5620 /* Attach a compilation unit header to the BFD backend so that it may be
5621 written into the object file. */
5622
5623 bfd_boolean
5624 bfd_som_attach_compilation_unit (bfd *abfd,
5625 const char *name,
5626 const char *language_name,
5627 const char *product_id,
5628 const char *version_id)
5629 {
5630 struct som_compilation_unit *n;
5631
5632 n = (struct som_compilation_unit *) bfd_zalloc
5633 (abfd, (bfd_size_type) sizeof (*n));
5634 if (n == NULL)
5635 return FALSE;
5636
5637 #define STRDUP(f) \
5638 if (f != NULL) \
5639 { \
5640 n->f.name = bfd_alloc (abfd, (bfd_size_type) strlen (f) + 1); \
5641 if (n->f.name == NULL) \
5642 return FALSE; \
5643 strcpy (n->f.name, f); \
5644 }
5645
5646 STRDUP (name);
5647 STRDUP (language_name);
5648 STRDUP (product_id);
5649 STRDUP (version_id);
5650
5651 #undef STRDUP
5652
5653 obj_som_compilation_unit (abfd) = n;
5654
5655 return TRUE;
5656 }
5657
5658 static bfd_boolean
5659 som_get_section_contents (bfd *abfd,
5660 sec_ptr section,
5661 void *location,
5662 file_ptr offset,
5663 bfd_size_type count)
5664 {
5665 if (count == 0 || ((section->flags & SEC_HAS_CONTENTS) == 0))
5666 return TRUE;
5667 if ((bfd_size_type) (offset+count) > section->size
5668 || bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0
5669 || bfd_bread (location, count, abfd) != count)
5670 return FALSE; /* On error. */
5671 return TRUE;
5672 }
5673
5674 static bfd_boolean
5675 som_set_section_contents (bfd *abfd,
5676 sec_ptr section,
5677 const void *location,
5678 file_ptr offset,
5679 bfd_size_type count)
5680 {
5681 if (! abfd->output_has_begun)
5682 {
5683 /* Set up fixed parts of the file, space, and subspace headers.
5684 Notify the world that output has begun. */
5685 som_prep_headers (abfd);
5686 abfd->output_has_begun = TRUE;
5687 /* Start writing the object file. This include all the string
5688 tables, fixup streams, and other portions of the object file. */
5689 som_begin_writing (abfd);
5690 }
5691
5692 /* Only write subspaces which have "real" contents (eg. the contents
5693 are not generated at run time by the OS). */
5694 if (!som_is_subspace (section)
5695 || ((section->flags & SEC_HAS_CONTENTS) == 0))
5696 return TRUE;
5697
5698 /* Seek to the proper offset within the object file and write the
5699 data. */
5700 offset += som_section_data (section)->subspace_dict->file_loc_init_value;
5701 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
5702 return FALSE;
5703
5704 if (bfd_bwrite (location, count, abfd) != count)
5705 return FALSE;
5706 return TRUE;
5707 }
5708
5709 static bfd_boolean
5710 som_set_arch_mach (bfd *abfd,
5711 enum bfd_architecture arch,
5712 unsigned long machine)
5713 {
5714 /* Allow any architecture to be supported by the SOM backend. */
5715 return bfd_default_set_arch_mach (abfd, arch, machine);
5716 }
5717
5718 static bfd_boolean
5719 som_find_nearest_line (bfd *abfd,
5720 asection *section,
5721 asymbol **symbols,
5722 bfd_vma offset,
5723 const char **filename_ptr,
5724 const char **functionname_ptr,
5725 unsigned int *line_ptr)
5726 {
5727 bfd_boolean found;
5728 asymbol *func;
5729 bfd_vma low_func;
5730 asymbol **p;
5731
5732 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
5733 & found, filename_ptr,
5734 functionname_ptr, line_ptr,
5735 & somdata (abfd).line_info))
5736 return FALSE;
5737
5738 if (found)
5739 return TRUE;
5740
5741 if (symbols == NULL)
5742 return FALSE;
5743
5744 /* Fallback: find function name from symbols table. */
5745 func = NULL;
5746 low_func = 0;
5747
5748 for (p = symbols; *p != NULL; p++)
5749 {
5750 som_symbol_type *q = (som_symbol_type *) *p;
5751
5752 if (q->som_type == SYMBOL_TYPE_ENTRY
5753 && q->symbol.section == section
5754 && q->symbol.value >= low_func
5755 && q->symbol.value <= offset)
5756 {
5757 func = (asymbol *) q;
5758 low_func = q->symbol.value;
5759 }
5760 }
5761
5762 if (func == NULL)
5763 return FALSE;
5764
5765 *filename_ptr = NULL;
5766 *functionname_ptr = bfd_asymbol_name (func);
5767 *line_ptr = 0;
5768
5769 return TRUE;
5770 }
5771
5772 static int
5773 som_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
5774 struct bfd_link_info *info ATTRIBUTE_UNUSED)
5775 {
5776 (*_bfd_error_handler) (_("som_sizeof_headers unimplemented"));
5777 abort ();
5778 return 0;
5779 }
5780
5781 /* Return the single-character symbol type corresponding to
5782 SOM section S, or '?' for an unknown SOM section. */
5783
5784 static char
5785 som_section_type (const char *s)
5786 {
5787 const struct section_to_type *t;
5788
5789 for (t = &stt[0]; t->section; t++)
5790 if (!strcmp (s, t->section))
5791 return t->type;
5792 return '?';
5793 }
5794
5795 static int
5796 som_decode_symclass (asymbol *symbol)
5797 {
5798 char c;
5799
5800 if (bfd_is_com_section (symbol->section))
5801 return 'C';
5802 if (bfd_is_und_section (symbol->section))
5803 {
5804 if (symbol->flags & BSF_WEAK)
5805 {
5806 /* If weak, determine if it's specifically an object
5807 or non-object weak. */
5808 if (symbol->flags & BSF_OBJECT)
5809 return 'v';
5810 else
5811 return 'w';
5812 }
5813 else
5814 return 'U';
5815 }
5816 if (bfd_is_ind_section (symbol->section))
5817 return 'I';
5818 if (symbol->flags & BSF_WEAK)
5819 {
5820 /* If weak, determine if it's specifically an object
5821 or non-object weak. */
5822 if (symbol->flags & BSF_OBJECT)
5823 return 'V';
5824 else
5825 return 'W';
5826 }
5827 if (!(symbol->flags & (BSF_GLOBAL | BSF_LOCAL)))
5828 return '?';
5829
5830 if (bfd_is_abs_section (symbol->section)
5831 || (som_symbol_data (symbol) != NULL
5832 && som_symbol_data (symbol)->som_type == SYMBOL_TYPE_ABSOLUTE))
5833 c = 'a';
5834 else if (symbol->section)
5835 c = som_section_type (symbol->section->name);
5836 else
5837 return '?';
5838 if (symbol->flags & BSF_GLOBAL)
5839 c = TOUPPER (c);
5840 return c;
5841 }
5842
5843 /* Return information about SOM symbol SYMBOL in RET. */
5844
5845 static void
5846 som_get_symbol_info (bfd *ignore_abfd ATTRIBUTE_UNUSED,
5847 asymbol *symbol,
5848 symbol_info *ret)
5849 {
5850 ret->type = som_decode_symclass (symbol);
5851 if (ret->type != 'U')
5852 ret->value = symbol->value + symbol->section->vma;
5853 else
5854 ret->value = 0;
5855 ret->name = symbol->name;
5856 }
5857
5858 /* Count the number of symbols in the archive symbol table. Necessary
5859 so that we can allocate space for all the carsyms at once. */
5860
5861 static bfd_boolean
5862 som_bfd_count_ar_symbols (bfd *abfd,
5863 struct som_lst_header *lst_header,
5864 symindex *count)
5865 {
5866 unsigned int i;
5867 unsigned char *hash_table;
5868 bfd_size_type amt;
5869 file_ptr lst_filepos;
5870
5871 lst_filepos = bfd_tell (abfd) - sizeof (struct som_external_lst_header);
5872
5873 amt = lst_header->hash_size * 4;
5874 hash_table = bfd_malloc (amt);
5875 if (hash_table == NULL && amt != 0)
5876 goto error_return;
5877
5878 /* Don't forget to initialize the counter! */
5879 *count = 0;
5880
5881 /* Read in the hash table. The has table is an array of 32bit file offsets
5882 which point to the hash chains. */
5883 if (bfd_bread ((void *) hash_table, amt, abfd) != amt)
5884 goto error_return;
5885
5886 /* Walk each chain counting the number of symbols found on that particular
5887 chain. */
5888 for (i = 0; i < lst_header->hash_size; i++)
5889 {
5890 struct som_external_lst_symbol_record ext_lst_symbol;
5891 unsigned int hash_val = bfd_getb32 (hash_table + 4 * i);
5892
5893 /* An empty chain has zero as it's file offset. */
5894 if (hash_val == 0)
5895 continue;
5896
5897 /* Seek to the first symbol in this hash chain. */
5898 if (bfd_seek (abfd, lst_filepos + hash_val, SEEK_SET) != 0)
5899 goto error_return;
5900
5901 /* Read in this symbol and update the counter. */
5902 amt = sizeof (ext_lst_symbol);
5903 if (bfd_bread ((void *) &ext_lst_symbol, amt, abfd) != amt)
5904 goto error_return;
5905
5906 (*count)++;
5907
5908 /* Now iterate through the rest of the symbols on this chain. */
5909 while (1)
5910 {
5911 unsigned int next_entry = bfd_getb32 (ext_lst_symbol.next_entry);
5912
5913 if (next_entry == 0)
5914 break;
5915
5916 /* Seek to the next symbol. */
5917 if (bfd_seek (abfd, lst_filepos + next_entry, SEEK_SET) != 0)
5918 goto error_return;
5919
5920 /* Read the symbol in and update the counter. */
5921 amt = sizeof (ext_lst_symbol);
5922 if (bfd_bread ((void *) &ext_lst_symbol, amt, abfd) != amt)
5923 goto error_return;
5924
5925 (*count)++;
5926 }
5927 }
5928 if (hash_table != NULL)
5929 free (hash_table);
5930 return TRUE;
5931
5932 error_return:
5933 if (hash_table != NULL)
5934 free (hash_table);
5935 return FALSE;
5936 }
5937
5938 /* Fill in the canonical archive symbols (SYMS) from the archive described
5939 by ABFD and LST_HEADER. */
5940
5941 static bfd_boolean
5942 som_bfd_fill_in_ar_symbols (bfd *abfd,
5943 struct som_lst_header *lst_header,
5944 carsym **syms)
5945 {
5946 unsigned int i;
5947 carsym *set = syms[0];
5948 unsigned char *hash_table;
5949 struct som_external_som_entry *som_dict = NULL;
5950 bfd_size_type amt;
5951 file_ptr lst_filepos;
5952 unsigned int string_loc;
5953
5954 lst_filepos = bfd_tell (abfd) - sizeof (struct som_external_lst_header);
5955 amt = lst_header->hash_size * 4;
5956 hash_table = bfd_malloc (amt);
5957 if (hash_table == NULL && amt != 0)
5958 goto error_return;
5959
5960 /* Read in the hash table. The has table is an array of 32bit file offsets
5961 which point to the hash chains. */
5962 if (bfd_bread ((void *) hash_table, amt, abfd) != amt)
5963 goto error_return;
5964
5965 /* Seek to and read in the SOM dictionary. We will need this to fill
5966 in the carsym's filepos field. */
5967 if (bfd_seek (abfd, lst_filepos + lst_header->dir_loc, SEEK_SET) != 0)
5968 goto error_return;
5969
5970 amt = lst_header->module_count * sizeof (struct som_external_som_entry);
5971 som_dict = bfd_malloc (amt);
5972 if (som_dict == NULL && amt != 0)
5973 goto error_return;
5974
5975 if (bfd_bread ((void *) som_dict, amt, abfd) != amt)
5976 goto error_return;
5977
5978 string_loc = lst_header->string_loc;
5979
5980 /* Walk each chain filling in the carsyms as we go along. */
5981 for (i = 0; i < lst_header->hash_size; i++)
5982 {
5983 struct som_external_lst_symbol_record lst_symbol;
5984 unsigned int hash_val;
5985 unsigned int len;
5986 unsigned char ext_len[4];
5987
5988 /* An empty chain has zero as it's file offset. */
5989 hash_val = bfd_getb32 (hash_table + 4 * i);
5990 if (hash_val == 0)
5991 continue;
5992
5993 /* Seek to and read the first symbol on the chain. */
5994 if (bfd_seek (abfd, lst_filepos + hash_val, SEEK_SET) != 0)
5995 goto error_return;
5996
5997 amt = sizeof (lst_symbol);
5998 if (bfd_bread ((void *) &lst_symbol, amt, abfd) != amt)
5999 goto error_return;
6000
6001 /* Get the name of the symbol, first get the length which is stored
6002 as a 32bit integer just before the symbol.
6003
6004 One might ask why we don't just read in the entire string table
6005 and index into it. Well, according to the SOM ABI the string
6006 index can point *anywhere* in the archive to save space, so just
6007 using the string table would not be safe. */
6008 if (bfd_seek (abfd, (lst_filepos + string_loc
6009 + bfd_getb32 (lst_symbol.name) - 4), SEEK_SET) != 0)
6010 goto error_return;
6011
6012 if (bfd_bread (&ext_len, (bfd_size_type) 4, abfd) != 4)
6013 goto error_return;
6014 len = bfd_getb32 (ext_len);
6015
6016 /* Allocate space for the name and null terminate it too. */
6017 set->name = bfd_zalloc (abfd, (bfd_size_type) len + 1);
6018 if (!set->name)
6019 goto error_return;
6020 if (bfd_bread (set->name, (bfd_size_type) len, abfd) != len)
6021 goto error_return;
6022
6023 set->name[len] = 0;
6024
6025 /* Fill in the file offset. Note that the "location" field points
6026 to the SOM itself, not the ar_hdr in front of it. */
6027 set->file_offset =
6028 bfd_getb32 (som_dict[bfd_getb32 (lst_symbol.som_index)].location)
6029 - sizeof (struct ar_hdr);
6030
6031 /* Go to the next symbol. */
6032 set++;
6033
6034 /* Iterate through the rest of the chain. */
6035 while (1)
6036 {
6037 unsigned int next_entry = bfd_getb32 (lst_symbol.next_entry);
6038
6039 if (next_entry == 0)
6040 break;
6041
6042 /* Seek to the next symbol and read it in. */
6043 if (bfd_seek (abfd, lst_filepos + next_entry, SEEK_SET) != 0)
6044 goto error_return;
6045
6046 amt = sizeof (lst_symbol);
6047 if (bfd_bread ((void *) &lst_symbol, amt, abfd) != amt)
6048 goto error_return;
6049
6050 /* Seek to the name length & string and read them in. */
6051 if (bfd_seek (abfd, lst_filepos + string_loc
6052 + bfd_getb32 (lst_symbol.name) - 4, SEEK_SET) != 0)
6053 goto error_return;
6054
6055 if (bfd_bread (&ext_len, (bfd_size_type) 4, abfd) != 4)
6056 goto error_return;
6057 len = bfd_getb32 (ext_len);
6058
6059 /* Allocate space for the name and null terminate it too. */
6060 set->name = bfd_zalloc (abfd, (bfd_size_type) len + 1);
6061 if (!set->name)
6062 goto error_return;
6063
6064 if (bfd_bread (set->name, (bfd_size_type) len, abfd) != len)
6065 goto error_return;
6066 set->name[len] = 0;
6067
6068 /* Fill in the file offset. Note that the "location" field points
6069 to the SOM itself, not the ar_hdr in front of it. */
6070 set->file_offset =
6071 bfd_getb32 (som_dict[bfd_getb32 (lst_symbol.som_index)].location)
6072 - sizeof (struct ar_hdr);
6073
6074 /* Go on to the next symbol. */
6075 set++;
6076 }
6077 }
6078 /* If we haven't died by now, then we successfully read the entire
6079 archive symbol table. */
6080 if (hash_table != NULL)
6081 free (hash_table);
6082 if (som_dict != NULL)
6083 free (som_dict);
6084 return TRUE;
6085
6086 error_return:
6087 if (hash_table != NULL)
6088 free (hash_table);
6089 if (som_dict != NULL)
6090 free (som_dict);
6091 return FALSE;
6092 }
6093
6094 /* Read in the LST from the archive. */
6095
6096 static bfd_boolean
6097 som_slurp_armap (bfd *abfd)
6098 {
6099 struct som_external_lst_header ext_lst_header;
6100 struct som_lst_header lst_header;
6101 struct ar_hdr ar_header;
6102 unsigned int parsed_size;
6103 struct artdata *ardata = bfd_ardata (abfd);
6104 char nextname[17];
6105 bfd_size_type amt = 16;
6106 int i = bfd_bread ((void *) nextname, amt, abfd);
6107
6108 /* Special cases. */
6109 if (i == 0)
6110 return TRUE;
6111 if (i != 16)
6112 return FALSE;
6113
6114 if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0)
6115 return FALSE;
6116
6117 /* For archives without .o files there is no symbol table. */
6118 if (! CONST_STRNEQ (nextname, "/ "))
6119 {
6120 bfd_has_map (abfd) = FALSE;
6121 return TRUE;
6122 }
6123
6124 /* Read in and sanity check the archive header. */
6125 amt = sizeof (struct ar_hdr);
6126 if (bfd_bread ((void *) &ar_header, amt, abfd) != amt)
6127 return FALSE;
6128
6129 if (strncmp (ar_header.ar_fmag, ARFMAG, 2))
6130 {
6131 bfd_set_error (bfd_error_malformed_archive);
6132 return FALSE;
6133 }
6134
6135 /* How big is the archive symbol table entry? */
6136 errno = 0;
6137 parsed_size = strtol (ar_header.ar_size, NULL, 10);
6138 if (errno != 0)
6139 {
6140 bfd_set_error (bfd_error_malformed_archive);
6141 return FALSE;
6142 }
6143
6144 /* Save off the file offset of the first real user data. */
6145 ardata->first_file_filepos = bfd_tell (abfd) + parsed_size;
6146
6147 /* Read in the library symbol table. We'll make heavy use of this
6148 in just a minute. */
6149 amt = sizeof (struct som_external_lst_header);
6150 if (bfd_bread ((void *) &ext_lst_header, amt, abfd) != amt)
6151 return FALSE;
6152
6153 som_swap_lst_header_in (&ext_lst_header, &lst_header);
6154
6155 /* Sanity check. */
6156 if (lst_header.a_magic != LIBMAGIC)
6157 {
6158 bfd_set_error (bfd_error_malformed_archive);
6159 return FALSE;
6160 }
6161
6162 /* Count the number of symbols in the library symbol table. */
6163 if (! som_bfd_count_ar_symbols (abfd, &lst_header, &ardata->symdef_count))
6164 return FALSE;
6165
6166 /* Get back to the start of the library symbol table. */
6167 if (bfd_seek (abfd, (ardata->first_file_filepos - parsed_size
6168 + sizeof (struct som_external_lst_header)),
6169 SEEK_SET) != 0)
6170 return FALSE;
6171
6172 /* Initialize the cache and allocate space for the library symbols. */
6173 ardata->cache = 0;
6174 amt = ardata->symdef_count;
6175 amt *= sizeof (carsym);
6176 ardata->symdefs = bfd_alloc (abfd, amt);
6177 if (!ardata->symdefs)
6178 return FALSE;
6179
6180 /* Now fill in the canonical archive symbols. */
6181 if (! som_bfd_fill_in_ar_symbols (abfd, &lst_header, &ardata->symdefs))
6182 return FALSE;
6183
6184 /* Seek back to the "first" file in the archive. Note the "first"
6185 file may be the extended name table. */
6186 if (bfd_seek (abfd, ardata->first_file_filepos, SEEK_SET) != 0)
6187 return FALSE;
6188
6189 /* Notify the generic archive code that we have a symbol map. */
6190 bfd_has_map (abfd) = TRUE;
6191 return TRUE;
6192 }
6193
6194 /* Begin preparing to write a SOM library symbol table.
6195
6196 As part of the prep work we need to determine the number of symbols
6197 and the size of the associated string section. */
6198
6199 static bfd_boolean
6200 som_bfd_prep_for_ar_write (bfd *abfd,
6201 unsigned int *num_syms,
6202 unsigned int *stringsize)
6203 {
6204 bfd *curr_bfd = abfd->archive_head;
6205
6206 /* Some initialization. */
6207 *num_syms = 0;
6208 *stringsize = 0;
6209
6210 /* Iterate over each BFD within this archive. */
6211 while (curr_bfd != NULL)
6212 {
6213 unsigned int curr_count, i;
6214 som_symbol_type *sym;
6215
6216 /* Don't bother for non-SOM objects. */
6217 if (curr_bfd->format != bfd_object
6218 || curr_bfd->xvec->flavour != bfd_target_som_flavour)
6219 {
6220 curr_bfd = curr_bfd->archive_next;
6221 continue;
6222 }
6223
6224 /* Make sure the symbol table has been read, then snag a pointer
6225 to it. It's a little slimey to grab the symbols via obj_som_symtab,
6226 but doing so avoids allocating lots of extra memory. */
6227 if (! som_slurp_symbol_table (curr_bfd))
6228 return FALSE;
6229
6230 sym = obj_som_symtab (curr_bfd);
6231 curr_count = bfd_get_symcount (curr_bfd);
6232
6233 /* Examine each symbol to determine if it belongs in the
6234 library symbol table. */
6235 for (i = 0; i < curr_count; i++, sym++)
6236 {
6237 struct som_misc_symbol_info info;
6238
6239 /* Derive SOM information from the BFD symbol. */
6240 som_bfd_derive_misc_symbol_info (curr_bfd, &sym->symbol, &info);
6241
6242 /* Should we include this symbol? */
6243 if (info.symbol_type == ST_NULL
6244 || info.symbol_type == ST_SYM_EXT
6245 || info.symbol_type == ST_ARG_EXT)
6246 continue;
6247
6248 /* Only global symbols and unsatisfied commons. */
6249 if (info.symbol_scope != SS_UNIVERSAL
6250 && info.symbol_type != ST_STORAGE)
6251 continue;
6252
6253 /* Do no include undefined symbols. */
6254 if (bfd_is_und_section (sym->symbol.section))
6255 continue;
6256
6257 /* Bump the various counters, being careful to honor
6258 alignment considerations in the string table. */
6259 (*num_syms)++;
6260 *stringsize += strlen (sym->symbol.name) + 5;
6261 while (*stringsize % 4)
6262 (*stringsize)++;
6263 }
6264
6265 curr_bfd = curr_bfd->archive_next;
6266 }
6267 return TRUE;
6268 }
6269
6270 /* Hash a symbol name based on the hashing algorithm presented in the
6271 SOM ABI. */
6272
6273 static unsigned int
6274 som_bfd_ar_symbol_hash (asymbol *symbol)
6275 {
6276 unsigned int len = strlen (symbol->name);
6277
6278 /* Names with length 1 are special. */
6279 if (len == 1)
6280 return 0x1000100 | (symbol->name[0] << 16) | symbol->name[0];
6281
6282 return ((len & 0x7f) << 24) | (symbol->name[1] << 16)
6283 | (symbol->name[len - 2] << 8) | symbol->name[len - 1];
6284 }
6285
6286 /* Do the bulk of the work required to write the SOM library
6287 symbol table. */
6288
6289 static bfd_boolean
6290 som_bfd_ar_write_symbol_stuff (bfd *abfd,
6291 unsigned int nsyms,
6292 unsigned int string_size,
6293 struct som_external_lst_header lst,
6294 unsigned elength)
6295 {
6296 char *strings = NULL, *p;
6297 struct som_external_lst_symbol_record *lst_syms = NULL, *curr_lst_sym;
6298 bfd *curr_bfd;
6299 unsigned char *hash_table = NULL;
6300 struct som_external_som_entry *som_dict = NULL;
6301 struct som_external_lst_symbol_record **last_hash_entry = NULL;
6302 unsigned int curr_som_offset, som_index = 0;
6303 bfd_size_type amt;
6304 unsigned int module_count;
6305 unsigned int hash_size;
6306
6307 hash_size = bfd_getb32 (lst.hash_size);
6308 amt = hash_size * 4;
6309 hash_table = bfd_zmalloc (amt);
6310 if (hash_table == NULL && hash_size != 0)
6311 goto error_return;
6312
6313 module_count = bfd_getb32 (lst.module_count);
6314 amt = module_count * sizeof (struct som_external_som_entry);
6315 som_dict = bfd_zmalloc (amt);
6316 if (som_dict == NULL && module_count != 0)
6317 goto error_return;
6318
6319 amt = hash_size * sizeof (struct som_external_lst_symbol_record *);
6320 last_hash_entry = bfd_zmalloc (amt);
6321 if (last_hash_entry == NULL && hash_size != 0)
6322 goto error_return;
6323
6324 /* Symbols have som_index fields, so we have to keep track of the
6325 index of each SOM in the archive.
6326
6327 The SOM dictionary has (among other things) the absolute file
6328 position for the SOM which a particular dictionary entry
6329 describes. We have to compute that information as we iterate
6330 through the SOMs/symbols. */
6331 som_index = 0;
6332
6333 /* We add in the size of the archive header twice as the location
6334 in the SOM dictionary is the actual offset of the SOM, not the
6335 archive header before the SOM. */
6336 curr_som_offset = 8 + 2 * sizeof (struct ar_hdr) + bfd_getb32 (lst.file_end);
6337
6338 /* Make room for the archive header and the contents of the
6339 extended string table. Note that elength includes the size
6340 of the archive header for the extended name table! */
6341 if (elength)
6342 curr_som_offset += elength;
6343
6344 /* Make sure we're properly aligned. */
6345 curr_som_offset = (curr_som_offset + 0x1) & ~0x1;
6346
6347 /* FIXME should be done with buffers just like everything else... */
6348 amt = nsyms;
6349 amt *= sizeof (struct som_external_lst_symbol_record);
6350 lst_syms = bfd_malloc (amt);
6351 if (lst_syms == NULL && nsyms != 0)
6352 goto error_return;
6353 strings = bfd_malloc ((bfd_size_type) string_size);
6354 if (strings == NULL && string_size != 0)
6355 goto error_return;
6356
6357 p = strings;
6358 curr_lst_sym = lst_syms;
6359
6360 curr_bfd = abfd->archive_head;
6361 while (curr_bfd != NULL)
6362 {
6363 unsigned int curr_count, i;
6364 som_symbol_type *sym;
6365
6366 /* Don't bother for non-SOM objects. */
6367 if (curr_bfd->format != bfd_object
6368 || curr_bfd->xvec->flavour != bfd_target_som_flavour)
6369 {
6370 curr_bfd = curr_bfd->archive_next;
6371 continue;
6372 }
6373
6374 /* Make sure the symbol table has been read, then snag a pointer
6375 to it. It's a little slimey to grab the symbols via obj_som_symtab,
6376 but doing so avoids allocating lots of extra memory. */
6377 if (! som_slurp_symbol_table (curr_bfd))
6378 goto error_return;
6379
6380 sym = obj_som_symtab (curr_bfd);
6381 curr_count = bfd_get_symcount (curr_bfd);
6382
6383 for (i = 0; i < curr_count; i++, sym++)
6384 {
6385 struct som_misc_symbol_info info;
6386 struct som_external_lst_symbol_record *last;
6387 unsigned int symbol_pos;
6388 unsigned int slen;
6389 unsigned int symbol_key;
6390 unsigned int flags;
6391
6392 /* Derive SOM information from the BFD symbol. */
6393 som_bfd_derive_misc_symbol_info (curr_bfd, &sym->symbol, &info);
6394
6395 /* Should we include this symbol? */
6396 if (info.symbol_type == ST_NULL
6397 || info.symbol_type == ST_SYM_EXT
6398 || info.symbol_type == ST_ARG_EXT)
6399 continue;
6400
6401 /* Only global symbols and unsatisfied commons. */
6402 if (info.symbol_scope != SS_UNIVERSAL
6403 && info.symbol_type != ST_STORAGE)
6404 continue;
6405
6406 /* Do no include undefined symbols. */
6407 if (bfd_is_und_section (sym->symbol.section))
6408 continue;
6409
6410 /* If this is the first symbol from this SOM, then update
6411 the SOM dictionary too. */
6412 if (bfd_getb32 (som_dict[som_index].location) == 0)
6413 {
6414 bfd_putb32 (curr_som_offset, som_dict[som_index].location);
6415 bfd_putb32 (arelt_size (curr_bfd), som_dict[som_index].length);
6416 }
6417
6418 symbol_key = som_bfd_ar_symbol_hash (&sym->symbol);
6419
6420 /* Fill in the lst symbol record. */
6421 flags = 0;
6422 if (info.secondary_def)
6423 flags |= LST_SYMBOL_SECONDARY_DEF;
6424 flags |= info.symbol_type << LST_SYMBOL_SYMBOL_TYPE_SH;
6425 flags |= info.symbol_scope << LST_SYMBOL_SYMBOL_SCOPE_SH;
6426 if (bfd_is_com_section (sym->symbol.section))
6427 flags |= LST_SYMBOL_IS_COMMON;
6428 if (info.dup_common)
6429 flags |= LST_SYMBOL_DUP_COMMON;
6430 flags |= 3 << LST_SYMBOL_XLEAST_SH;
6431 flags |= info.arg_reloc << LST_SYMBOL_ARG_RELOC_SH;
6432 bfd_putb32 (flags, curr_lst_sym->flags);
6433 bfd_putb32 (p - strings + 4, curr_lst_sym->name);
6434 bfd_putb32 (0, curr_lst_sym->qualifier_name);
6435 bfd_putb32 (info.symbol_info, curr_lst_sym->symbol_info);
6436 bfd_putb32 (info.symbol_value | info.priv_level,
6437 curr_lst_sym->symbol_value);
6438 bfd_putb32 (0, curr_lst_sym->symbol_descriptor);
6439 curr_lst_sym->reserved = 0;
6440 bfd_putb32 (som_index, curr_lst_sym->som_index);
6441 bfd_putb32 (symbol_key, curr_lst_sym->symbol_key);
6442 bfd_putb32 (0, curr_lst_sym->next_entry);
6443
6444 /* Insert into the hash table. */
6445 symbol_pos =
6446 (curr_lst_sym - lst_syms)
6447 * sizeof (struct som_external_lst_symbol_record)
6448 + hash_size * 4
6449 + module_count * sizeof (struct som_external_som_entry)
6450 + sizeof (struct som_external_lst_header);
6451 last = last_hash_entry[symbol_key % hash_size];
6452 if (last != NULL)
6453 {
6454 /* There is already something at the head of this hash chain,
6455 so tack this symbol onto the end of the chain. */
6456 bfd_putb32 (symbol_pos, last->next_entry);
6457 }
6458 else
6459 /* First entry in this hash chain. */
6460 bfd_putb32 (symbol_pos, hash_table + 4 * (symbol_key % hash_size));
6461
6462 /* Keep track of the last symbol we added to this chain so we can
6463 easily update its next_entry pointer. */
6464 last_hash_entry[symbol_key % hash_size] = curr_lst_sym;
6465
6466 /* Update the string table. */
6467 slen = strlen (sym->symbol.name);
6468 bfd_put_32 (abfd, slen, p);
6469 p += 4;
6470 slen++; /* Nul terminator. */
6471 memcpy (p, sym->symbol.name, slen);
6472 p += slen;
6473 while (slen % 4)
6474 {
6475 bfd_put_8 (abfd, 0, p);
6476 p++;
6477 slen++;
6478 }
6479 BFD_ASSERT (p <= strings + string_size);
6480
6481 /* Head to the next symbol. */
6482 curr_lst_sym++;
6483 }
6484
6485 /* Keep track of where each SOM will finally reside; then look
6486 at the next BFD. */
6487 curr_som_offset += arelt_size (curr_bfd) + sizeof (struct ar_hdr);
6488
6489 /* A particular object in the archive may have an odd length; the
6490 linker requires objects begin on an even boundary. So round
6491 up the current offset as necessary. */
6492 curr_som_offset = (curr_som_offset + 0x1) &~ (unsigned) 1;
6493 curr_bfd = curr_bfd->archive_next;
6494 som_index++;
6495 }
6496
6497 /* Now scribble out the hash table. */
6498 amt = hash_size * 4;
6499 if (bfd_bwrite ((void *) hash_table, amt, abfd) != amt)
6500 goto error_return;
6501
6502 /* Then the SOM dictionary. */
6503 amt = module_count * sizeof (struct som_external_som_entry);
6504 if (bfd_bwrite ((void *) som_dict, amt, abfd) != amt)
6505 goto error_return;
6506
6507 /* The library symbols. */
6508 amt = nsyms * sizeof (struct som_external_lst_symbol_record);
6509 if (bfd_bwrite ((void *) lst_syms, amt, abfd) != amt)
6510 goto error_return;
6511
6512 /* And finally the strings. */
6513 amt = string_size;
6514 if (bfd_bwrite ((void *) strings, amt, abfd) != amt)
6515 goto error_return;
6516
6517 if (hash_table != NULL)
6518 free (hash_table);
6519 if (som_dict != NULL)
6520 free (som_dict);
6521 if (last_hash_entry != NULL)
6522 free (last_hash_entry);
6523 if (lst_syms != NULL)
6524 free (lst_syms);
6525 if (strings != NULL)
6526 free (strings);
6527 return TRUE;
6528
6529 error_return:
6530 if (hash_table != NULL)
6531 free (hash_table);
6532 if (som_dict != NULL)
6533 free (som_dict);
6534 if (last_hash_entry != NULL)
6535 free (last_hash_entry);
6536 if (lst_syms != NULL)
6537 free (lst_syms);
6538 if (strings != NULL)
6539 free (strings);
6540
6541 return FALSE;
6542 }
6543
6544 /* Write out the LST for the archive.
6545
6546 You'll never believe this is really how armaps are handled in SOM... */
6547
6548 static bfd_boolean
6549 som_write_armap (bfd *abfd,
6550 unsigned int elength,
6551 struct orl *map ATTRIBUTE_UNUSED,
6552 unsigned int orl_count ATTRIBUTE_UNUSED,
6553 int stridx ATTRIBUTE_UNUSED)
6554 {
6555 bfd *curr_bfd;
6556 struct stat statbuf;
6557 unsigned int i, lst_size, nsyms, stringsize;
6558 struct ar_hdr hdr;
6559 struct som_external_lst_header lst;
6560 unsigned char *p;
6561 bfd_size_type amt;
6562 unsigned int csum;
6563 unsigned int module_count;
6564
6565 /* We'll use this for the archive's date and mode later. */
6566 if (stat (abfd->filename, &statbuf) != 0)
6567 {
6568 bfd_set_error (bfd_error_system_call);
6569 return FALSE;
6570 }
6571 /* Fudge factor. */
6572 bfd_ardata (abfd)->armap_timestamp = statbuf.st_mtime + 60;
6573
6574 /* Account for the lst header first. */
6575 lst_size = sizeof (struct som_external_lst_header);
6576
6577 /* Start building the LST header. */
6578 /* FIXME: Do we need to examine each element to determine the
6579 largest id number? */
6580 bfd_putb16 (CPU_PA_RISC1_0, &lst.system_id);
6581 bfd_putb16 (LIBMAGIC, &lst.a_magic);
6582 bfd_putb32 (VERSION_ID, &lst.version_id);
6583 bfd_putb32 (0, &lst.file_time.secs);
6584 bfd_putb32 (0, &lst.file_time.nanosecs);
6585
6586 bfd_putb32 (lst_size, &lst.hash_loc);
6587 bfd_putb32 (SOM_LST_HASH_SIZE, &lst.hash_size);
6588
6589 /* Hash table is a SOM_LST_HASH_SIZE 32bit offsets. */
6590 lst_size += 4 * SOM_LST_HASH_SIZE;
6591
6592 /* We need to count the number of SOMs in this archive. */
6593 curr_bfd = abfd->archive_head;
6594 module_count = 0;
6595 while (curr_bfd != NULL)
6596 {
6597 /* Only true SOM objects count. */
6598 if (curr_bfd->format == bfd_object
6599 && curr_bfd->xvec->flavour == bfd_target_som_flavour)
6600 module_count++;
6601 curr_bfd = curr_bfd->archive_next;
6602 }
6603 bfd_putb32 (module_count, &lst.module_count);
6604 bfd_putb32 (module_count, &lst.module_limit);
6605 bfd_putb32 (lst_size, &lst.dir_loc);
6606 lst_size += sizeof (struct som_external_som_entry) * module_count;
6607
6608 /* We don't support import/export tables, auxiliary headers,
6609 or free lists yet. Make the linker work a little harder
6610 to make our life easier. */
6611
6612 bfd_putb32 (0, &lst.export_loc);
6613 bfd_putb32 (0, &lst.export_count);
6614 bfd_putb32 (0, &lst.import_loc);
6615 bfd_putb32 (0, &lst.aux_loc);
6616 bfd_putb32 (0, &lst.aux_size);
6617
6618 /* Count how many symbols we will have on the hash chains and the
6619 size of the associated string table. */
6620 if (! som_bfd_prep_for_ar_write (abfd, &nsyms, &stringsize))
6621 return FALSE;
6622
6623 lst_size += sizeof (struct som_external_lst_symbol_record) * nsyms;
6624
6625 /* For the string table. One day we might actually use this info
6626 to avoid small seeks/reads when reading archives. */
6627 bfd_putb32 (lst_size, &lst.string_loc);
6628 bfd_putb32 (stringsize, &lst.string_size);
6629 lst_size += stringsize;
6630
6631 /* SOM ABI says this must be zero. */
6632 bfd_putb32 (0, &lst.free_list);
6633 bfd_putb32 (lst_size, &lst.file_end);
6634
6635 /* Compute the checksum. Must happen after the entire lst header
6636 has filled in. */
6637 p = (unsigned char *) &lst;
6638 csum = 0;
6639 for (i = 0; i < sizeof (struct som_external_lst_header) - sizeof (int);
6640 i += 4)
6641 csum ^= bfd_getb32 (&p[i]);
6642 bfd_putb32 (csum, &lst.checksum);
6643
6644 sprintf (hdr.ar_name, "/ ");
6645 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%-12ld",
6646 bfd_ardata (abfd)->armap_timestamp);
6647 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld",
6648 statbuf.st_uid);
6649 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld",
6650 statbuf.st_gid);
6651 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-8o",
6652 (unsigned int)statbuf.st_mode);
6653 _bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10d",
6654 (int) lst_size);
6655 hdr.ar_fmag[0] = '`';
6656 hdr.ar_fmag[1] = '\012';
6657
6658 /* Turn any nulls into spaces. */
6659 for (i = 0; i < sizeof (struct ar_hdr); i++)
6660 if (((char *) (&hdr))[i] == '\0')
6661 (((char *) (&hdr))[i]) = ' ';
6662
6663 /* Scribble out the ar header. */
6664 amt = sizeof (struct ar_hdr);
6665 if (bfd_bwrite ((void *) &hdr, amt, abfd) != amt)
6666 return FALSE;
6667
6668 /* Now scribble out the lst header. */
6669 amt = sizeof (struct som_external_lst_header);
6670 if (bfd_bwrite ((void *) &lst, amt, abfd) != amt)
6671 return FALSE;
6672
6673 /* Build and write the armap. */
6674 if (!som_bfd_ar_write_symbol_stuff (abfd, nsyms, stringsize, lst, elength))
6675 return FALSE;
6676
6677 /* Done. */
6678 return TRUE;
6679 }
6680
6681 /* Free all information we have cached for this BFD. We can always
6682 read it again later if we need it. */
6683
6684 static bfd_boolean
6685 som_bfd_free_cached_info (bfd *abfd)
6686 {
6687 asection *o;
6688
6689 if (bfd_get_format (abfd) != bfd_object)
6690 return TRUE;
6691
6692 #define FREE(x) if (x != NULL) { free (x); x = NULL; }
6693 /* Free the native string and symbol tables. */
6694 FREE (obj_som_symtab (abfd));
6695 FREE (obj_som_stringtab (abfd));
6696 for (o = abfd->sections; o != NULL; o = o->next)
6697 {
6698 /* Free the native relocations. */
6699 o->reloc_count = (unsigned) -1;
6700 FREE (som_section_data (o)->reloc_stream);
6701 /* Do not free the generic relocations as they are objalloc'ed. */
6702 }
6703 #undef FREE
6704
6705 return TRUE;
6706 }
6707
6708 /* End of miscellaneous support functions. */
6709
6710 /* Linker support functions. */
6711
6712 static bfd_boolean
6713 som_bfd_link_split_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
6714 {
6715 return som_is_subspace (sec) && sec->size > 240000;
6716 }
6717
6718 #define som_close_and_cleanup som_bfd_free_cached_info
6719 #define som_read_ar_hdr _bfd_generic_read_ar_hdr
6720 #define som_write_ar_hdr _bfd_generic_write_ar_hdr
6721 #define som_openr_next_archived_file bfd_generic_openr_next_archived_file
6722 #define som_get_elt_at_index _bfd_generic_get_elt_at_index
6723 #define som_generic_stat_arch_elt bfd_generic_stat_arch_elt
6724 #define som_truncate_arname bfd_bsd_truncate_arname
6725 #define som_slurp_extended_name_table _bfd_slurp_extended_name_table
6726 #define som_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table
6727 #define som_update_armap_timestamp bfd_true
6728 #define som_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
6729 #define som_get_lineno _bfd_nosymbols_get_lineno
6730 #define som_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
6731 #define som_read_minisymbols _bfd_generic_read_minisymbols
6732 #define som_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
6733 #define som_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
6734 #define som_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
6735 #define som_bfd_relax_section bfd_generic_relax_section
6736 #define som_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
6737 #define som_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
6738 #define som_bfd_link_add_symbols _bfd_generic_link_add_symbols
6739 #define som_bfd_link_just_syms _bfd_generic_link_just_syms
6740 #define som_bfd_copy_link_hash_symbol_type \
6741 _bfd_generic_copy_link_hash_symbol_type
6742 #define som_bfd_final_link _bfd_generic_final_link
6743 #define som_bfd_gc_sections bfd_generic_gc_sections
6744 #define som_bfd_lookup_section_flags bfd_generic_lookup_section_flags
6745 #define som_bfd_merge_sections bfd_generic_merge_sections
6746 #define som_bfd_is_group_section bfd_generic_is_group_section
6747 #define som_bfd_discard_group bfd_generic_discard_group
6748 #define som_section_already_linked _bfd_generic_section_already_linked
6749 #define som_bfd_define_common_symbol bfd_generic_define_common_symbol
6750 #define som_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
6751 #define som_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
6752 #define som_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
6753 #define som_find_inliner_info _bfd_nosymbols_find_inliner_info
6754
6755 const bfd_target som_vec =
6756 {
6757 "som", /* Name. */
6758 bfd_target_som_flavour,
6759 BFD_ENDIAN_BIG, /* Target byte order. */
6760 BFD_ENDIAN_BIG, /* Target headers byte order. */
6761 (HAS_RELOC | EXEC_P | /* Object flags. */
6762 HAS_LINENO | HAS_DEBUG |
6763 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | DYNAMIC),
6764 (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS | SEC_LINK_ONCE
6765 | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */
6766
6767 /* Leading_symbol_char: is the first char of a user symbol
6768 predictable, and if so what is it. */
6769 0,
6770 '/', /* AR_pad_char. */
6771 14, /* AR_max_namelen. */
6772 0, /* match priority. */
6773 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
6774 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
6775 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */
6776 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
6777 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
6778 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */
6779 {_bfd_dummy_target,
6780 som_object_p, /* bfd_check_format. */
6781 bfd_generic_archive_p,
6782 _bfd_dummy_target
6783 },
6784 {
6785 bfd_false,
6786 som_mkobject,
6787 _bfd_generic_mkarchive,
6788 bfd_false
6789 },
6790 {
6791 bfd_false,
6792 som_write_object_contents,
6793 _bfd_write_archive_contents,
6794 bfd_false,
6795 },
6796 #undef som
6797
6798 BFD_JUMP_TABLE_GENERIC (som),
6799 BFD_JUMP_TABLE_COPY (som),
6800 BFD_JUMP_TABLE_CORE (_bfd_nocore),
6801 BFD_JUMP_TABLE_ARCHIVE (som),
6802 BFD_JUMP_TABLE_SYMBOLS (som),
6803 BFD_JUMP_TABLE_RELOCS (som),
6804 BFD_JUMP_TABLE_WRITE (som),
6805 BFD_JUMP_TABLE_LINK (som),
6806 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
6807
6808 NULL,
6809
6810 NULL
6811 };
6812
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