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bafe0602 | 1 | /* BFD backend for hp-ux 9000/300 |
9783e04a | 2 | Copyright (C) 1990, 1991, 1994 Free Software Foundation, Inc. |
bafe0602 KR |
3 | Written by Glenn Engel. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
7a7fbffb | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
bafe0602 KR |
20 | |
21 | /* | |
34dd8ba3 | 22 | |
bafe0602 KR |
23 | hpux native ------------> | | |
24 | | hp300hpux bfd | ----------> hpux w/gnu ext | |
25 | hpux w/gnu extension ----> | | | |
26 | ||
27 | ||
28 | Support for the 9000/[34]00 has several limitations. | |
29 | 1. Shared libraries are not supported. | |
30 | 2. The output format from this bfd is not usable by native tools. | |
bafe0602 KR |
31 | |
32 | The primary motivation for writing this bfd was to allow use of | |
33 | gdb and gcc for host based debugging and not to mimic the hp-ux tools | |
34 | in every detail. This leads to a significant simplification of the | |
35 | code and a leap in performance. The decision to not output hp native | |
36 | compatible objects was further strengthened by the fact that the richness | |
37 | of the gcc compiled objects could not be represented without loss of | |
38 | information. For example, while the hp format supports the concept of | |
39 | secondary symbols, it does not support indirect symbols. Another | |
40 | reason is to maintain backwards compatibility with older implementations | |
41 | of gcc on hpux which used 'hpxt' to translate .a and .o files into a | |
42 | format which could be readily understood by the gnu linker and gdb. | |
43 | This allows reading hp secondary symbols and converting them into | |
44 | indirect symbols but the reverse it not always possible. | |
45 | ||
46 | Another example of differences is that the hp format stores symbol offsets | |
34dd8ba3 | 47 | in the object code while the gnu utilities use a field in the |
bafe0602 KR |
48 | relocation record for this. To support the hp native format, the object |
49 | code would need to be patched with the offsets when producing .o files. | |
50 | ||
51 | The basic technique taken in this implementation is to #include the code | |
52 | from aoutx.h and aout-target.h with appropriate #defines to override | |
53 | code where a unique implementation is needed: | |
54 | ||
55 | { | |
56 | #define a bunch of stuff | |
57 | #include <aoutx.h> | |
58 | ||
59 | implement a bunch of functions | |
34dd8ba3 | 60 | |
bafe0602 KR |
61 | #include "aout-target.h" |
62 | } | |
34dd8ba3 | 63 | |
bafe0602 KR |
64 | The hp symbol table is a bit different than other a.out targets. Instead |
65 | of having an array of nlist items and an array of strings, hp's format | |
66 | has them mixed together in one structure. In addition, the strings are | |
67 | not null terminated. It looks something like this: | |
34dd8ba3 | 68 | |
bafe0602 KR |
69 | nlist element 1 |
70 | string1 | |
71 | nlist element 2 | |
72 | string2 | |
73 | ... | |
34dd8ba3 | 74 | |
bafe0602 KR |
75 | The whole symbol table is read as one chunk and then we march thru it |
76 | and convert it to canonical form. As we march thru the table, we copy | |
77 | the nlist data into the internal form and we compact the strings and null | |
78 | terminate them, using storage from the already allocated symbol table: | |
34dd8ba3 | 79 | |
bafe0602 KR |
80 | string1 |
81 | null | |
82 | string2 | |
83 | null | |
bafe0602 KR |
84 | */ |
85 | ||
34dd8ba3 JG |
86 | /* @@ Is this really so different from normal a.out that it needs to include |
87 | aoutx.h? We should go through this file sometime and see what can be made | |
88 | more dependent on aout32.o and what might need to be broken off and accessed | |
89 | through the backend_data field. Or, maybe we really do need such a | |
90 | completely separate implementation. I don't have time to investigate this | |
91 | much further right now. [raeburn:19930428.2124EST] */ | |
92 | /* @@ Also, note that there wind up being two versions of some routines, with | |
93 | different names, only one of which actually gets used. For example: | |
94 | slurp_symbol_table | |
95 | swap_std_reloc_in | |
96 | slurp_reloc_table | |
97 | get_symtab | |
98 | get_symtab_upper_bound | |
99 | canonicalize_reloc | |
100 | mkobject | |
101 | This should also be fixed. */ | |
102 | ||
bafe0602 KR |
103 | #define TARGETNAME "a.out-hp300hpux" |
104 | #define MY(OP) CAT(hp300hpux_,OP) | |
105 | ||
106 | #define external_exec hp300hpux_exec_bytes | |
107 | #define external_nlist hp300hpux_nlist_bytes | |
108 | ||
109 | #include "aout/hp300hpux.h" | |
110 | ||
111 | /* define these so we can compile unused routines in aoutx.h */ | |
112 | #define e_strx e_shlib | |
113 | #define e_other e_length | |
114 | #define e_desc e_almod | |
115 | ||
116 | #define AR_PAD_CHAR '/' | |
34dd8ba3 | 117 | #define TARGET_IS_BIG_ENDIAN_P |
bafe0602 KR |
118 | #define DEFAULT_ARCH bfd_arch_m68k |
119 | ||
120 | #define MY_get_section_contents aout_32_get_section_contents | |
bafe0602 KR |
121 | #define MY_slurp_armap bfd_slurp_bsd_armap_f2 |
122 | ||
123 | /***********************************************/ | |
124 | /* provide overrides for routines in this file */ | |
125 | /***********************************************/ | |
9783e04a DM |
126 | /* these don't use MY because that causes problems within JUMP_TABLE |
127 | (CAT winds up being expanded recursively, which ANSI C compilers | |
128 | will not do). */ | |
129 | #define MY_get_symtab hp300hpux_get_symtab | |
130 | #define MY_get_symtab_upper_bound hp300hpux_get_symtab_upper_bound | |
131 | #define MY_canonicalize_reloc hp300hpux_canonicalize_reloc | |
132 | #define MY_write_object_contents hp300hpux_write_object_contents | |
133 | ||
7a7fbffb ILT |
134 | #define MY_read_minisymbols _bfd_generic_read_minisymbols |
135 | #define MY_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol | |
136 | ||
9783e04a DM |
137 | #define MY_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
138 | #define MY_bfd_link_add_symbols _bfd_generic_link_add_symbols | |
263a3f17 | 139 | #define MY_final_link_callback unused |
9783e04a | 140 | #define MY_bfd_final_link _bfd_generic_final_link |
bafe0602 | 141 | |
5c8444f8 ILT |
142 | /* Until and unless we convert the slurp_reloc and slurp_symtab |
143 | routines in this file, we can not use the default aout | |
144 | free_cached_info routine which assumes that the relocs and symtabs | |
145 | were allocated using malloc. */ | |
146 | #define MY_bfd_free_cached_info bfd_true | |
147 | ||
bafe0602 KR |
148 | #define hp300hpux_write_syms aout_32_write_syms |
149 | ||
150 | #define MY_callback MY(callback) | |
151 | ||
263a3f17 ILT |
152 | #define MY_exec_hdr_flags 0x2 |
153 | ||
34dd8ba3 | 154 | #define NAME_swap_exec_header_in NAME(hp300hpux_32_,swap_exec_header_in) |
bafe0602 KR |
155 | |
156 | #define HP_SYMTYPE_UNDEFINED 0x00 | |
157 | #define HP_SYMTYPE_ABSOLUTE 0x01 | |
158 | #define HP_SYMTYPE_TEXT 0x02 | |
159 | #define HP_SYMTYPE_DATA 0x03 | |
160 | #define HP_SYMTYPE_BSS 0x04 | |
161 | #define HP_SYMTYPE_COMMON 0x05 | |
162 | ||
163 | #define HP_SYMTYPE_TYPE 0x0F | |
164 | #define HP_SYMTYPE_FILENAME 0x1F | |
165 | ||
166 | #define HP_SYMTYPE_ALIGN 0x10 | |
167 | #define HP_SYMTYPE_EXTERNAL 0x20 | |
168 | #define HP_SECONDARY_SYMBOL 0x40 | |
169 | ||
170 | /* RELOCATION DEFINITIONS */ | |
171 | #define HP_RSEGMENT_TEXT 0x00 | |
172 | #define HP_RSEGMENT_DATA 0x01 | |
173 | #define HP_RSEGMENT_BSS 0x02 | |
174 | #define HP_RSEGMENT_EXTERNAL 0x03 | |
175 | #define HP_RSEGMENT_PCREL 0x04 | |
176 | #define HP_RSEGMENT_RDLT 0x05 | |
177 | #define HP_RSEGMENT_RPLT 0x06 | |
178 | #define HP_RSEGMENT_NOOP 0x3F | |
179 | ||
180 | #define HP_RLENGTH_BYTE 0x00 | |
181 | #define HP_RLENGTH_WORD 0x01 | |
182 | #define HP_RLENGTH_LONG 0x02 | |
183 | #define HP_RLENGTH_ALIGN 0x03 | |
184 | ||
34dd8ba3 | 185 | #define NAME(x,y) CAT3(hp300hpux,_32_,y) |
9783e04a | 186 | #define ARCH_SIZE 32 |
263a3f17 ILT |
187 | |
188 | /* aoutx.h requires definitions for BMAGIC and QMAGIC. */ | |
7a7fbffb | 189 | #define BMAGIC HPUX_DOT_O_MAGIC |
263a3f17 ILT |
190 | #define QMAGIC 0314 |
191 | ||
bafe0602 KR |
192 | #include "aoutx.h" |
193 | ||
34dd8ba3 JG |
194 | /* Since the hpux symbol table has nlist elements interspersed with |
195 | strings and we need to insert som strings for secondary symbols, we | |
196 | give ourselves a little extra padding up front to account for | |
197 | this. Note that for each non-secondary symbol we process, we gain | |
198 | 9 bytes of space for the discarded nlist element (one byte used for | |
199 | null). SYM_EXTRA_BYTES is the extra space. */ | |
bafe0602 KR |
200 | #define SYM_EXTRA_BYTES 1024 |
201 | ||
202 | /* Set parameters about this a.out file that are machine-dependent. | |
203 | This routine is called from some_aout_object_p just before it returns. */ | |
7a7fbffb | 204 | static const bfd_target * |
25057836 JL |
205 | MY (callback) (abfd) |
206 | bfd *abfd; | |
bafe0602 KR |
207 | { |
208 | struct internal_exec *execp = exec_hdr (abfd); | |
209 | ||
210 | /* Calculate the file positions of the parts of a newly read aout header */ | |
25057836 | 211 | obj_textsec (abfd)->_raw_size = N_TXTSIZE (*execp); |
bafe0602 KR |
212 | |
213 | /* The virtual memory addresses of the sections */ | |
25057836 JL |
214 | obj_textsec (abfd)->vma = N_TXTADDR (*execp); |
215 | obj_datasec (abfd)->vma = N_DATADDR (*execp); | |
216 | obj_bsssec (abfd)->vma = N_BSSADDR (*execp); | |
bafe0602 KR |
217 | |
218 | /* The file offsets of the sections */ | |
219 | obj_textsec (abfd)->filepos = N_TXTOFF (*execp); | |
220 | obj_datasec (abfd)->filepos = N_DATOFF (*execp); | |
221 | ||
222 | /* The file offsets of the relocation info */ | |
25057836 JL |
223 | obj_textsec (abfd)->rel_filepos = N_TRELOFF (*execp); |
224 | obj_datasec (abfd)->rel_filepos = N_DRELOFF (*execp); | |
bafe0602 KR |
225 | |
226 | /* The file offsets of the string table and symbol table. */ | |
227 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
228 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
34dd8ba3 | 229 | |
bafe0602 KR |
230 | /* Determine the architecture and machine type of the object file. */ |
231 | #ifdef SET_ARCH_MACH | |
25057836 | 232 | SET_ARCH_MACH (abfd, *execp); |
bafe0602 | 233 | #else |
25057836 | 234 | bfd_default_set_arch_mach (abfd, DEFAULT_ARCH, 0); |
bafe0602 KR |
235 | #endif |
236 | ||
237 | ||
25057836 JL |
238 | if (obj_aout_subformat (abfd) == gnu_encap_format) |
239 | { | |
bafe0602 | 240 | /* The file offsets of the relocation info */ |
25057836 JL |
241 | obj_textsec (abfd)->rel_filepos = N_GNU_TRELOFF (*execp); |
242 | obj_datasec (abfd)->rel_filepos = N_GNU_DRELOFF (*execp); | |
34dd8ba3 | 243 | |
bafe0602 | 244 | /* The file offsets of the string table and symbol table. */ |
25057836 | 245 | obj_sym_filepos (abfd) = N_GNU_SYMOFF (*execp); |
bafe0602 | 246 | obj_str_filepos (abfd) = (obj_sym_filepos (abfd) + execp->a_syms); |
34dd8ba3 | 247 | |
bafe0602 KR |
248 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; |
249 | bfd_get_symcount (abfd) = execp->a_syms / 12; | |
250 | obj_symbol_entry_size (abfd) = 12; | |
251 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
25057836 | 252 | } |
34dd8ba3 | 253 | |
bafe0602 KR |
254 | return abfd->xvec; |
255 | } | |
256 | ||
25057836 | 257 | extern boolean aout_32_write_syms PARAMS ((bfd * abfd)); |
9783e04a | 258 | |
bafe0602 | 259 | static boolean |
25057836 JL |
260 | MY (write_object_contents) (abfd) |
261 | bfd *abfd; | |
bafe0602 | 262 | { |
25057836 JL |
263 | struct external_exec exec_bytes; |
264 | struct internal_exec *execp = exec_hdr (abfd); | |
265 | bfd_size_type text_size; /* dummy vars */ | |
266 | file_ptr text_end; | |
34dd8ba3 | 267 | |
25057836 | 268 | memset (&exec_bytes, 0, sizeof (exec_bytes)); |
bafe0602 | 269 | #if CHOOSE_RELOC_SIZE |
25057836 | 270 | CHOOSE_RELOC_SIZE (abfd); |
bafe0602 | 271 | #else |
25057836 | 272 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; |
bafe0602 | 273 | #endif |
34dd8ba3 | 274 | |
25057836 | 275 | if (adata (abfd).magic == undecided_magic) |
263a3f17 | 276 | NAME (aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); |
25057836 | 277 | execp->a_syms = 0; |
34dd8ba3 | 278 | |
25057836 | 279 | execp->a_entry = bfd_get_start_address (abfd); |
34dd8ba3 | 280 | |
25057836 JL |
281 | execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * |
282 | obj_reloc_entry_size (abfd)); | |
283 | execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * | |
284 | obj_reloc_entry_size (abfd)); | |
34dd8ba3 | 285 | |
25057836 | 286 | N_SET_MACHTYPE (*execp, 0xc); |
263a3f17 | 287 | N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags); |
34dd8ba3 | 288 | |
263a3f17 | 289 | NAME (aout,swap_exec_header_out) (abfd, execp, &exec_bytes); |
34dd8ba3 | 290 | |
25057836 | 291 | /* update fields not covered by default swap_exec_header_out */ |
bafe0602 | 292 | |
25057836 JL |
293 | /* this is really the sym table size but we store it in drelocs */ |
294 | bfd_h_put_32 (abfd, bfd_get_symcount (abfd) * 12, exec_bytes.e_drelocs); | |
34dd8ba3 | 295 | |
4002f18a ILT |
296 | if (bfd_seek (abfd, 0L, false) != 0 |
297 | || (bfd_write ((PTR) & exec_bytes, 1, EXEC_BYTES_SIZE, abfd) | |
298 | != EXEC_BYTES_SIZE)) | |
299 | return false; | |
34dd8ba3 | 300 | |
25057836 | 301 | /* Write out the symbols, and then the relocs. We must write out |
9783e04a DM |
302 | the symbols first so that we know the symbol indices. */ |
303 | ||
25057836 JL |
304 | if (bfd_get_symcount (abfd) != 0) |
305 | { | |
306 | /* Skip the relocs to where we want to put the symbols. */ | |
307 | if (bfd_seek (abfd, (file_ptr) N_DRELOFF (*execp) + execp->a_drsize, | |
308 | SEEK_SET) != 0) | |
309 | return false; | |
310 | } | |
9783e04a | 311 | |
25057836 JL |
312 | if (!MY (write_syms) (abfd)) |
313 | return false; | |
34dd8ba3 | 314 | |
25057836 JL |
315 | if (bfd_get_symcount (abfd) != 0) |
316 | { | |
4002f18a ILT |
317 | if (bfd_seek (abfd, (long) (N_TRELOFF (*execp)), false) != 0) |
318 | return false; | |
263a3f17 | 319 | if (!NAME (aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) |
25057836 | 320 | return false; |
4002f18a ILT |
321 | if (bfd_seek (abfd, (long) (N_DRELOFF (*execp)), false) != 0) |
322 | return false; | |
263a3f17 | 323 | if (!NAME (aout,squirt_out_relocs) (abfd, obj_datasec (abfd))) |
25057836 | 324 | return false; |
bafe0602 KR |
325 | } |
326 | ||
25057836 JL |
327 | return true; |
328 | } | |
bafe0602 KR |
329 | |
330 | /* convert the hp symbol type to be the same as aout64.h usage so we */ | |
331 | /* can piggyback routines in aoutx.h. */ | |
332 | ||
333 | static void | |
25057836 JL |
334 | convert_sym_type (sym_pointer, cache_ptr, abfd) |
335 | struct external_nlist *sym_pointer; | |
336 | aout_symbol_type *cache_ptr; | |
337 | bfd *abfd; | |
bafe0602 | 338 | { |
25057836 JL |
339 | int name_type; |
340 | int new_type; | |
bafe0602 | 341 | |
25057836 JL |
342 | name_type = (cache_ptr->type); |
343 | new_type = 0; | |
34dd8ba3 | 344 | |
25057836 | 345 | if ((name_type & HP_SYMTYPE_ALIGN) != 0) |
bafe0602 | 346 | { |
25057836 JL |
347 | /* iou_error ("aligned symbol encountered: %s", name);*/ |
348 | name_type = 0; | |
bafe0602 KR |
349 | } |
350 | ||
25057836 JL |
351 | if (name_type == HP_SYMTYPE_FILENAME) |
352 | new_type = N_FN; | |
353 | else | |
354 | { | |
355 | switch (name_type & HP_SYMTYPE_TYPE) | |
356 | { | |
357 | case HP_SYMTYPE_UNDEFINED: | |
358 | new_type = N_UNDF; | |
359 | break; | |
360 | ||
361 | case HP_SYMTYPE_ABSOLUTE: | |
362 | new_type = N_ABS; | |
363 | break; | |
364 | ||
365 | case HP_SYMTYPE_TEXT: | |
366 | new_type = N_TEXT; | |
367 | break; | |
368 | ||
369 | case HP_SYMTYPE_DATA: | |
370 | new_type = N_DATA; | |
371 | break; | |
372 | ||
373 | case HP_SYMTYPE_BSS: | |
374 | new_type = N_BSS; | |
375 | break; | |
376 | ||
377 | case HP_SYMTYPE_COMMON: | |
378 | new_type = N_COMM; | |
379 | break; | |
380 | ||
381 | default: | |
7a7fbffb ILT |
382 | abort (); |
383 | break; | |
25057836 JL |
384 | } |
385 | if (name_type & HP_SYMTYPE_EXTERNAL) | |
386 | new_type |= N_EXT; | |
387 | ||
388 | if (name_type & HP_SECONDARY_SYMBOL) | |
389 | new_type = (new_type & ~N_TYPE) | N_INDR; | |
390 | } | |
391 | cache_ptr->type = new_type; | |
34dd8ba3 | 392 | |
bafe0602 KR |
393 | } |
394 | ||
395 | ||
396 | /* | |
397 | DESCRIPTION | |
398 | Swaps the information in an executable header taken from a raw | |
399 | byte stream memory image, into the internal exec_header | |
400 | structure. | |
401 | */ | |
402 | ||
403 | void | |
263a3f17 | 404 | NAME (aout,swap_exec_header_in) (abfd, raw_bytes, execp) |
25057836 JL |
405 | bfd *abfd; |
406 | struct external_exec *raw_bytes; | |
407 | struct internal_exec *execp; | |
bafe0602 | 408 | { |
25057836 | 409 | struct external_exec *bytes = (struct external_exec *) raw_bytes; |
bafe0602 KR |
410 | |
411 | /* The internal_exec structure has some fields that are unused in this | |
412 | configuration (IE for i960), so ensure that all such uninitialized | |
413 | fields are zero'd out. There are places where two of these structs | |
414 | are memcmp'd, and thus the contents do matter. */ | |
415 | memset (execp, 0, sizeof (struct internal_exec)); | |
416 | /* Now fill in fields in the execp, from the bytes in the raw data. */ | |
25057836 JL |
417 | execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); |
418 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
419 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
420 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
421 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
422 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
bafe0602 KR |
423 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); |
424 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
425 | ||
426 | /***************************************************************/ | |
427 | /* check the header to see if it was generated by a bfd output */ | |
428 | /* this is detected rather bizarely by requiring a bunch of */ | |
429 | /* header fields to be zero and an old unused field (now used) */ | |
430 | /* to be set. */ | |
431 | /***************************************************************/ | |
432 | do | |
25057836 | 433 | { |
bafe0602 | 434 | long syms; |
25057836 JL |
435 | struct aout_data_struct *rawptr; |
436 | if (bfd_h_get_32 (abfd, bytes->e_passize) != 0) | |
437 | break; | |
438 | if (bfd_h_get_32 (abfd, bytes->e_syms) != 0) | |
439 | break; | |
440 | if (bfd_h_get_32 (abfd, bytes->e_supsize) != 0) | |
441 | break; | |
34dd8ba3 | 442 | |
bafe0602 | 443 | syms = bfd_h_get_32 (abfd, bytes->e_drelocs); |
25057836 JL |
444 | if (syms == 0) |
445 | break; | |
bafe0602 KR |
446 | |
447 | /* OK, we've passed the test as best as we can determine */ | |
448 | execp->a_syms = syms; | |
449 | ||
450 | /* allocate storage for where we will store this result */ | |
25057836 | 451 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (*rawptr)); |
bafe0602 | 452 | |
25057836 JL |
453 | if (rawptr == NULL) |
454 | { | |
455 | bfd_set_error (bfd_error_no_memory); | |
456 | return; | |
457 | } | |
bafe0602 | 458 | abfd->tdata.aout_data = rawptr; |
25057836 JL |
459 | obj_aout_subformat (abfd) = gnu_encap_format; |
460 | } | |
461 | while (0); | |
bafe0602 KR |
462 | } |
463 | ||
464 | ||
465 | /* The hp symbol table is a bit different than other a.out targets. Instead | |
466 | of having an array of nlist items and an array of strings, hp's format | |
467 | has them mixed together in one structure. In addition, the strings are | |
468 | not null terminated. It looks something like this: | |
469 | ||
470 | nlist element 1 | |
471 | string1 | |
472 | nlist element 2 | |
473 | string2 | |
474 | ... | |
475 | ||
476 | The whole symbol table is read as one chunk and then we march thru it | |
477 | and convert it to canonical form. As we march thru the table, we copy | |
478 | the nlist data into the internal form and we compact the strings and null | |
479 | terminate them, using storage from the already allocated symbol table: | |
480 | ||
481 | string1 | |
482 | null | |
483 | string2 | |
484 | null | |
485 | ... | |
486 | */ | |
487 | ||
488 | boolean | |
25057836 JL |
489 | MY (slurp_symbol_table) (abfd) |
490 | bfd *abfd; | |
bafe0602 KR |
491 | { |
492 | bfd_size_type symbol_bytes; | |
493 | struct external_nlist *syms; | |
494 | struct external_nlist *sym_pointer; | |
495 | struct external_nlist *sym_end; | |
496 | char *strings; | |
497 | aout_symbol_type *cached; | |
498 | unsigned num_syms = 0; | |
499 | unsigned num_secondary = 0; | |
34dd8ba3 | 500 | |
bafe0602 | 501 | /* If there's no work to be done, don't do any */ |
25057836 JL |
502 | if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL) |
503 | return true; | |
504 | symbol_bytes = exec_hdr (abfd)->a_syms; | |
bafe0602 | 505 | |
25057836 JL |
506 | strings = (char *) bfd_alloc (abfd, |
507 | symbol_bytes + SYM_EXTRA_BYTES); | |
9783e04a DM |
508 | if (!strings) |
509 | { | |
25057836 | 510 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
511 | return false; |
512 | } | |
bafe0602 | 513 | syms = (struct external_nlist *) (strings + SYM_EXTRA_BYTES); |
4002f18a ILT |
514 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 |
515 | || bfd_read ((PTR) syms, symbol_bytes, 1, abfd) != symbol_bytes) | |
25057836 | 516 | { |
bafe0602 KR |
517 | bfd_release (abfd, syms); |
518 | return false; | |
25057836 | 519 | } |
34dd8ba3 | 520 | |
bafe0602 | 521 | |
25057836 | 522 | sym_end = (struct external_nlist *) (((char *) syms) + symbol_bytes); |
34dd8ba3 | 523 | |
bafe0602 | 524 | /* first, march thru the table and figure out how many symbols there are */ |
34dd8ba3 | 525 | for (sym_pointer = syms; sym_pointer < sym_end; sym_pointer++, num_syms++) |
25057836 JL |
526 | { |
527 | if (bfd_get_8 (abfd, sym_pointer->e_type) & HP_SECONDARY_SYMBOL) | |
528 | num_secondary++; | |
bafe0602 | 529 | /* skip over the embedded symbol. */ |
25057836 JL |
530 | sym_pointer = (struct external_nlist *) (((char *) sym_pointer) + |
531 | sym_pointer->e_length[0]); | |
532 | } | |
bafe0602 KR |
533 | |
534 | /* now that we know the symbol count, update the bfd header */ | |
25057836 | 535 | bfd_get_symcount (abfd) = num_syms + num_secondary; |
34dd8ba3 | 536 | |
7a7fbffb ILT |
537 | cached = ((aout_symbol_type *) |
538 | bfd_zalloc (abfd, | |
539 | bfd_get_symcount (abfd) * sizeof (aout_symbol_type))); | |
540 | if (cached == NULL && bfd_get_symcount (abfd) != 0) | |
9783e04a | 541 | { |
25057836 | 542 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
543 | return false; |
544 | } | |
34dd8ba3 | 545 | |
bafe0602 KR |
546 | /* as we march thru the hp symbol table, convert it into a list of |
547 | null terminated strings to hold the symbol names. Make sure any | |
548 | assignment to the strings pointer is done after we're thru using | |
549 | the nlist so we don't overwrite anything important. */ | |
550 | num_secondary = 0; | |
34dd8ba3 | 551 | |
bafe0602 | 552 | /* OK, now walk the new symtable, cacheing symbol properties */ |
25057836 JL |
553 | { |
554 | aout_symbol_type *cache_ptr = cached; | |
555 | aout_symbol_type cache_save; | |
556 | /* Run through table and copy values */ | |
557 | for (sym_pointer = syms, cache_ptr = cached; | |
558 | sym_pointer < sym_end; sym_pointer++, cache_ptr++) | |
559 | { | |
560 | unsigned int length; | |
561 | cache_ptr->symbol.the_bfd = abfd; | |
562 | cache_ptr->symbol.value = GET_SWORD (abfd, sym_pointer->e_value); | |
563 | cache_ptr->desc = bfd_get_16 (abfd, sym_pointer->e_almod); | |
564 | cache_ptr->type = bfd_get_8 (abfd, sym_pointer->e_type); | |
7a7fbffb | 565 | cache_ptr->symbol.udata.p = NULL; |
25057836 JL |
566 | length = bfd_get_8 (abfd, sym_pointer->e_length); |
567 | cache_ptr->other = length; /* other not used, save length here */ | |
568 | ||
569 | cache_save = *cache_ptr; | |
570 | convert_sym_type (sym_pointer, cache_ptr, abfd); | |
263a3f17 | 571 | if (!translate_from_native_sym_flags (abfd, cache_ptr)) |
25057836 JL |
572 | return false; |
573 | ||
574 | /********************************************************/ | |
575 | /* for hpux, the 'lenght' value indicates the length of */ | |
576 | /* the symbol name which follows the nlist entry. */ | |
577 | /********************************************************/ | |
578 | if (length) | |
bafe0602 | 579 | { |
25057836 JL |
580 | /**************************************************************/ |
581 | /* the hp string is not null terminated so we create a new one*/ | |
582 | /* by copying the string to overlap the just vacated nlist */ | |
583 | /* structure before it in memory. */ | |
584 | /**************************************************************/ | |
585 | cache_ptr->symbol.name = strings; | |
586 | memcpy (strings, sym_pointer + 1, length); | |
587 | strings[length] = '\0'; | |
588 | strings += length + 1; | |
589 | } | |
590 | else | |
591 | cache_ptr->symbol.name = (char *) NULL; | |
592 | ||
593 | /**********************************************************/ | |
594 | /* this is a bit of a kludge, but a secondary hp symbol */ | |
595 | /* gets translated into a gnu indirect symbol. When this */ | |
596 | /* happens, we need to create a "dummy" record to which */ | |
597 | /* we can point the indirect symbol to. */ | |
598 | /**********************************************************/ | |
599 | if ((cache_ptr->type | N_EXT) == (N_INDR | N_EXT)) | |
600 | { | |
601 | aout_symbol_type *cache_ptr2 = cached + num_syms + num_secondary; | |
602 | ||
603 | num_secondary++; | |
604 | ||
605 | /* aoutx.h assumes the "next" value is the indirect sym */ | |
606 | /* since we don't want to disturb the order by inserting */ | |
607 | /* a new symbol, we tack on the created secondary syms */ | |
608 | /* at the end. */ | |
609 | cache_ptr->symbol.value = (bfd_vma) (cache_ptr2); | |
610 | *cache_ptr2 = cache_save; | |
611 | cache_ptr2->symbol.name = strings; | |
612 | memcpy (strings, cache_ptr->symbol.name, length); | |
613 | strcpy (strings + length, ":secondry"); /* 9 max chars + null */ | |
614 | strings += length + 10; | |
615 | cache_ptr2->type &= ~HP_SECONDARY_SYMBOL; /* clear secondary */ | |
616 | convert_sym_type (sym_pointer, cache_ptr2, abfd); | |
263a3f17 | 617 | if (!translate_from_native_sym_flags (abfd, cache_ptr2)) |
9783e04a | 618 | return false; |
bafe0602 | 619 | } |
bafe0602 | 620 | |
25057836 JL |
621 | /* skip over the embedded symbol. */ |
622 | sym_pointer = (struct external_nlist *) (((char *) sym_pointer) + | |
623 | length); | |
624 | } | |
625 | } | |
626 | ||
627 | obj_aout_symbols (abfd) = cached; | |
34dd8ba3 | 628 | |
bafe0602 KR |
629 | return true; |
630 | } | |
631 | ||
632 | ||
633 | ||
634 | void | |
7a7fbffb | 635 | MY (swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount) |
25057836 JL |
636 | bfd *abfd; |
637 | struct hp300hpux_reloc *bytes; | |
638 | arelent *cache_ptr; | |
639 | asymbol **symbols; | |
7a7fbffb | 640 | bfd_size_type symcount; |
bafe0602 KR |
641 | { |
642 | int r_index; | |
643 | int r_extern = 0; | |
644 | unsigned int r_length; | |
645 | int r_pcrel = 0; | |
25057836 | 646 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
bafe0602 | 647 | |
34dd8ba3 | 648 | cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address); |
25057836 | 649 | r_index = bfd_h_get_16 (abfd, bytes->r_index); |
34dd8ba3 | 650 | |
bafe0602 | 651 | switch (bytes->r_type[0]) |
25057836 JL |
652 | { |
653 | case HP_RSEGMENT_TEXT: | |
bafe0602 KR |
654 | r_index = N_TEXT; |
655 | break; | |
25057836 | 656 | case HP_RSEGMENT_DATA: |
bafe0602 KR |
657 | r_index = N_DATA; |
658 | break; | |
25057836 | 659 | case HP_RSEGMENT_BSS: |
bafe0602 KR |
660 | r_index = N_BSS; |
661 | break; | |
25057836 | 662 | case HP_RSEGMENT_EXTERNAL: |
bafe0602 KR |
663 | r_extern = 1; |
664 | break; | |
25057836 | 665 | case HP_RSEGMENT_PCREL: |
bafe0602 KR |
666 | r_extern = 1; |
667 | r_pcrel = 1; | |
668 | break; | |
25057836 | 669 | case HP_RSEGMENT_RDLT: |
bafe0602 | 670 | break; |
25057836 | 671 | case HP_RSEGMENT_RPLT: |
bafe0602 | 672 | break; |
25057836 | 673 | case HP_RSEGMENT_NOOP: |
bafe0602 | 674 | break; |
25057836 | 675 | default: |
7a7fbffb ILT |
676 | abort (); |
677 | break; | |
25057836 | 678 | } |
34dd8ba3 | 679 | |
bafe0602 KR |
680 | switch (bytes->r_length[0]) |
681 | { | |
682 | case HP_RLENGTH_BYTE: | |
683 | r_length = 0; | |
684 | break; | |
685 | case HP_RLENGTH_WORD: | |
686 | r_length = 1; | |
687 | break; | |
688 | case HP_RLENGTH_LONG: | |
689 | r_length = 2; | |
690 | break; | |
691 | default: | |
7a7fbffb ILT |
692 | abort (); |
693 | break; | |
bafe0602 KR |
694 | } |
695 | ||
25057836 | 696 | cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel; |
bafe0602 KR |
697 | /* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */ |
698 | ||
699 | /* This macro uses the r_index value computed above */ | |
700 | if (r_pcrel && r_extern) | |
25057836 JL |
701 | { |
702 | /* The GNU linker assumes any offset from beginning of section */ | |
703 | /* is already incorporated into the image while the HP linker */ | |
704 | /* adds this in later. Add it in now... */ | |
705 | MOVE_ADDRESS (-cache_ptr->address); | |
706 | } | |
bafe0602 | 707 | else |
25057836 JL |
708 | { |
709 | MOVE_ADDRESS (0); | |
710 | } | |
bafe0602 KR |
711 | } |
712 | ||
713 | boolean | |
25057836 JL |
714 | MY (slurp_reloc_table) (abfd, asect, symbols) |
715 | bfd *abfd; | |
716 | sec_ptr asect; | |
717 | asymbol **symbols; | |
bafe0602 KR |
718 | { |
719 | unsigned int count; | |
720 | bfd_size_type reloc_size; | |
721 | PTR relocs; | |
722 | arelent *reloc_cache; | |
723 | size_t each_size; | |
724 | struct hp300hpux_reloc *rptr; | |
725 | unsigned int counter; | |
726 | arelent *cache_ptr; | |
34dd8ba3 | 727 | |
25057836 JL |
728 | if (asect->relocation) |
729 | return true; | |
bafe0602 | 730 | |
25057836 JL |
731 | if (asect->flags & SEC_CONSTRUCTOR) |
732 | return true; | |
bafe0602 | 733 | |
25057836 JL |
734 | if (asect == obj_datasec (abfd)) |
735 | { | |
736 | reloc_size = exec_hdr (abfd)->a_drsize; | |
737 | goto doit; | |
738 | } | |
bafe0602 | 739 | |
25057836 JL |
740 | if (asect == obj_textsec (abfd)) |
741 | { | |
742 | reloc_size = exec_hdr (abfd)->a_trsize; | |
743 | goto doit; | |
744 | } | |
bafe0602 | 745 | |
25057836 | 746 | bfd_set_error (bfd_error_invalid_operation); |
bafe0602 KR |
747 | return false; |
748 | ||
25057836 | 749 | doit: |
4002f18a ILT |
750 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) |
751 | return false; | |
bafe0602 KR |
752 | each_size = obj_reloc_entry_size (abfd); |
753 | ||
754 | count = reloc_size / each_size; | |
755 | ||
756 | ||
25057836 JL |
757 | reloc_cache = (arelent *) bfd_zalloc (abfd, (size_t) (count * sizeof |
758 | (arelent))); | |
b3cee0a9 | 759 | if (!reloc_cache && count != 0) |
25057836 JL |
760 | { |
761 | nomem: | |
762 | bfd_set_error (bfd_error_no_memory); | |
763 | return false; | |
764 | } | |
bafe0602 KR |
765 | |
766 | relocs = (PTR) bfd_alloc (abfd, reloc_size); | |
b3cee0a9 | 767 | if (!relocs && reloc_size != 0) |
25057836 JL |
768 | { |
769 | bfd_release (abfd, reloc_cache); | |
770 | goto nomem; | |
771 | } | |
bafe0602 | 772 | |
25057836 JL |
773 | if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) |
774 | { | |
775 | bfd_release (abfd, relocs); | |
776 | bfd_release (abfd, reloc_cache); | |
777 | return false; | |
778 | } | |
bafe0602 | 779 | |
25057836 JL |
780 | rptr = (struct hp300hpux_reloc *) relocs; |
781 | counter = 0; | |
782 | cache_ptr = reloc_cache; | |
bafe0602 | 783 | |
25057836 JL |
784 | for (; counter < count; counter++, rptr++, cache_ptr++) |
785 | { | |
7a7fbffb ILT |
786 | MY (swap_std_reloc_in) (abfd, rptr, cache_ptr, symbols, |
787 | bfd_get_symcount (abfd)); | |
bafe0602 KR |
788 | } |
789 | ||
790 | ||
25057836 | 791 | bfd_release (abfd, relocs); |
bafe0602 KR |
792 | asect->relocation = reloc_cache; |
793 | asect->reloc_count = count; | |
794 | return true; | |
795 | } | |
796 | ||
797 | ||
798 | /************************************************************************/ | |
799 | /* The following functions are identical to functions in aoutx.h except */ | |
800 | /* they refer to MY(func) rather than NAME(aout,func) and they also */ | |
801 | /* call aout_32 versions if the input file was generated by gcc */ | |
802 | /************************************************************************/ | |
803 | ||
326e32d7 ILT |
804 | long aout_32_get_symtab PARAMS ((bfd * abfd, asymbol ** location)); |
805 | long aout_32_get_symtab_upper_bound PARAMS ((bfd * abfd)); | |
bafe0602 | 806 | |
326e32d7 ILT |
807 | long aout_32_canonicalize_reloc PARAMS ((bfd * abfd, sec_ptr section, |
808 | arelent ** relptr, | |
809 | asymbol ** symbols)); | |
bafe0602 | 810 | |
326e32d7 | 811 | long |
25057836 JL |
812 | MY (get_symtab) (abfd, location) |
813 | bfd *abfd; | |
814 | asymbol **location; | |
bafe0602 | 815 | { |
25057836 JL |
816 | unsigned int counter = 0; |
817 | aout_symbol_type *symbase; | |
bafe0602 | 818 | |
25057836 JL |
819 | if (obj_aout_subformat (abfd) == gnu_encap_format) |
820 | return aout_32_get_symtab (abfd, location); | |
34dd8ba3 | 821 | |
25057836 | 822 | if (!MY (slurp_symbol_table) (abfd)) |
326e32d7 | 823 | return -1; |
bafe0602 | 824 | |
25057836 JL |
825 | for (symbase = obj_aout_symbols (abfd); counter++ < bfd_get_symcount (abfd);) |
826 | *(location++) = (asymbol *) (symbase++); | |
827 | *location++ = 0; | |
828 | return bfd_get_symcount (abfd); | |
bafe0602 KR |
829 | } |
830 | ||
326e32d7 | 831 | long |
25057836 JL |
832 | MY (get_symtab_upper_bound) (abfd) |
833 | bfd *abfd; | |
bafe0602 | 834 | { |
25057836 JL |
835 | if (obj_aout_subformat (abfd) == gnu_encap_format) |
836 | return aout_32_get_symtab_upper_bound (abfd); | |
837 | if (!MY (slurp_symbol_table) (abfd)) | |
326e32d7 | 838 | return -1; |
bafe0602 | 839 | |
25057836 | 840 | return (bfd_get_symcount (abfd) + 1) * (sizeof (aout_symbol_type *)); |
bafe0602 KR |
841 | } |
842 | ||
843 | ||
844 | ||
845 | ||
326e32d7 | 846 | long |
25057836 JL |
847 | MY (canonicalize_reloc) (abfd, section, relptr, symbols) |
848 | bfd *abfd; | |
849 | sec_ptr section; | |
850 | arelent **relptr; | |
851 | asymbol **symbols; | |
bafe0602 KR |
852 | { |
853 | arelent *tblptr = section->relocation; | |
854 | unsigned int count; | |
25057836 JL |
855 | if (obj_aout_subformat (abfd) == gnu_encap_format) |
856 | return aout_32_canonicalize_reloc (abfd, section, relptr, symbols); | |
bafe0602 | 857 | |
25057836 | 858 | if (!(tblptr || MY (slurp_reloc_table) (abfd, section, symbols))) |
326e32d7 | 859 | return -1; |
bafe0602 | 860 | |
25057836 JL |
861 | if (section->flags & SEC_CONSTRUCTOR) |
862 | { | |
863 | arelent_chain *chain = section->constructor_chain; | |
864 | for (count = 0; count < section->reloc_count; count++) | |
865 | { | |
866 | *relptr++ = &chain->relent; | |
867 | chain = chain->next; | |
868 | } | |
869 | } | |
870 | else | |
871 | { | |
872 | tblptr = section->relocation; | |
25057836 JL |
873 | |
874 | for (count = 0; count++ < section->reloc_count;) | |
875 | { | |
876 | *relptr++ = tblptr++; | |
877 | } | |
bafe0602 | 878 | } |
bafe0602 KR |
879 | *relptr = 0; |
880 | ||
881 | return section->reloc_count; | |
882 | } | |
883 | ||
884 | ||
885 | #include "aout-target.h" |