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bafe0602 KR |
1 | /* BFD backend for hp-ux 9000/300 |
2 | Copyright (C) 1990-1991 Free Software Foundation, Inc. | |
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 | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
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. | |
31 | 3. Core files are not supported (yet). | |
32 | ||
33 | The primary motivation for writing this bfd was to allow use of | |
34 | gdb and gcc for host based debugging and not to mimic the hp-ux tools | |
35 | in every detail. This leads to a significant simplification of the | |
36 | code and a leap in performance. The decision to not output hp native | |
37 | compatible objects was further strengthened by the fact that the richness | |
38 | of the gcc compiled objects could not be represented without loss of | |
39 | information. For example, while the hp format supports the concept of | |
40 | secondary symbols, it does not support indirect symbols. Another | |
41 | reason is to maintain backwards compatibility with older implementations | |
42 | of gcc on hpux which used 'hpxt' to translate .a and .o files into a | |
43 | format which could be readily understood by the gnu linker and gdb. | |
44 | This allows reading hp secondary symbols and converting them into | |
45 | indirect symbols but the reverse it not always possible. | |
46 | ||
47 | Another example of differences is that the hp format stores symbol offsets | |
34dd8ba3 | 48 | in the object code while the gnu utilities use a field in the |
bafe0602 KR |
49 | relocation record for this. To support the hp native format, the object |
50 | code would need to be patched with the offsets when producing .o files. | |
51 | ||
52 | The basic technique taken in this implementation is to #include the code | |
53 | from aoutx.h and aout-target.h with appropriate #defines to override | |
54 | code where a unique implementation is needed: | |
55 | ||
56 | { | |
57 | #define a bunch of stuff | |
58 | #include <aoutx.h> | |
59 | ||
60 | implement a bunch of functions | |
34dd8ba3 | 61 | |
bafe0602 KR |
62 | #include "aout-target.h" |
63 | } | |
34dd8ba3 | 64 | |
bafe0602 KR |
65 | The hp symbol table is a bit different than other a.out targets. Instead |
66 | of having an array of nlist items and an array of strings, hp's format | |
67 | has them mixed together in one structure. In addition, the strings are | |
68 | not null terminated. It looks something like this: | |
34dd8ba3 | 69 | |
bafe0602 KR |
70 | nlist element 1 |
71 | string1 | |
72 | nlist element 2 | |
73 | string2 | |
74 | ... | |
34dd8ba3 | 75 | |
bafe0602 KR |
76 | The whole symbol table is read as one chunk and then we march thru it |
77 | and convert it to canonical form. As we march thru the table, we copy | |
78 | the nlist data into the internal form and we compact the strings and null | |
79 | terminate them, using storage from the already allocated symbol table: | |
34dd8ba3 | 80 | |
bafe0602 KR |
81 | string1 |
82 | null | |
83 | string2 | |
84 | null | |
bafe0602 KR |
85 | */ |
86 | ||
34dd8ba3 JG |
87 | /* @@ Is this really so different from normal a.out that it needs to include |
88 | aoutx.h? We should go through this file sometime and see what can be made | |
89 | more dependent on aout32.o and what might need to be broken off and accessed | |
90 | through the backend_data field. Or, maybe we really do need such a | |
91 | completely separate implementation. I don't have time to investigate this | |
92 | much further right now. [raeburn:19930428.2124EST] */ | |
93 | /* @@ Also, note that there wind up being two versions of some routines, with | |
94 | different names, only one of which actually gets used. For example: | |
95 | slurp_symbol_table | |
96 | swap_std_reloc_in | |
97 | slurp_reloc_table | |
98 | get_symtab | |
99 | get_symtab_upper_bound | |
100 | canonicalize_reloc | |
101 | mkobject | |
102 | This should also be fixed. */ | |
103 | ||
bafe0602 KR |
104 | #define ARCH 32 |
105 | #define TARGETNAME "a.out-hp300hpux" | |
106 | #define MY(OP) CAT(hp300hpux_,OP) | |
107 | ||
108 | #define external_exec hp300hpux_exec_bytes | |
109 | #define external_nlist hp300hpux_nlist_bytes | |
110 | ||
111 | #include "aout/hp300hpux.h" | |
112 | ||
113 | /* define these so we can compile unused routines in aoutx.h */ | |
114 | #define e_strx e_shlib | |
115 | #define e_other e_length | |
116 | #define e_desc e_almod | |
117 | ||
118 | #define AR_PAD_CHAR '/' | |
34dd8ba3 | 119 | #define TARGET_IS_BIG_ENDIAN_P |
bafe0602 KR |
120 | #define DEFAULT_ARCH bfd_arch_m68k |
121 | ||
122 | #define MY_get_section_contents aout_32_get_section_contents | |
123 | #define MY_close_and_cleanup aout_32_close_and_cleanup | |
124 | #define MY_slurp_armap bfd_slurp_bsd_armap_f2 | |
125 | ||
126 | /***********************************************/ | |
127 | /* provide overrides for routines in this file */ | |
128 | /***********************************************/ | |
129 | #define MY_get_symtab MY(get_symtab) | |
130 | #define MY_get_symtab_upper_bound MY(get_symtab_upper_bound) | |
131 | #define MY_canonicalize_reloc MY(canonicalize_reloc) | |
132 | #define MY_write_object_contents MY(write_object_contents) | |
133 | ||
bafe0602 KR |
134 | #define hp300hpux_write_syms aout_32_write_syms |
135 | ||
136 | #define MY_callback MY(callback) | |
137 | ||
34dd8ba3 | 138 | #define NAME_swap_exec_header_in NAME(hp300hpux_32_,swap_exec_header_in) |
bafe0602 KR |
139 | |
140 | #define HP_SYMTYPE_UNDEFINED 0x00 | |
141 | #define HP_SYMTYPE_ABSOLUTE 0x01 | |
142 | #define HP_SYMTYPE_TEXT 0x02 | |
143 | #define HP_SYMTYPE_DATA 0x03 | |
144 | #define HP_SYMTYPE_BSS 0x04 | |
145 | #define HP_SYMTYPE_COMMON 0x05 | |
146 | ||
147 | #define HP_SYMTYPE_TYPE 0x0F | |
148 | #define HP_SYMTYPE_FILENAME 0x1F | |
149 | ||
150 | #define HP_SYMTYPE_ALIGN 0x10 | |
151 | #define HP_SYMTYPE_EXTERNAL 0x20 | |
152 | #define HP_SECONDARY_SYMBOL 0x40 | |
153 | ||
154 | /* RELOCATION DEFINITIONS */ | |
155 | #define HP_RSEGMENT_TEXT 0x00 | |
156 | #define HP_RSEGMENT_DATA 0x01 | |
157 | #define HP_RSEGMENT_BSS 0x02 | |
158 | #define HP_RSEGMENT_EXTERNAL 0x03 | |
159 | #define HP_RSEGMENT_PCREL 0x04 | |
160 | #define HP_RSEGMENT_RDLT 0x05 | |
161 | #define HP_RSEGMENT_RPLT 0x06 | |
162 | #define HP_RSEGMENT_NOOP 0x3F | |
163 | ||
164 | #define HP_RLENGTH_BYTE 0x00 | |
165 | #define HP_RLENGTH_WORD 0x01 | |
166 | #define HP_RLENGTH_LONG 0x02 | |
167 | #define HP_RLENGTH_ALIGN 0x03 | |
168 | ||
34dd8ba3 | 169 | #define NAME(x,y) CAT3(hp300hpux,_32_,y) |
bafe0602 KR |
170 | #include "aoutx.h" |
171 | ||
34dd8ba3 JG |
172 | /* Since the hpux symbol table has nlist elements interspersed with |
173 | strings and we need to insert som strings for secondary symbols, we | |
174 | give ourselves a little extra padding up front to account for | |
175 | this. Note that for each non-secondary symbol we process, we gain | |
176 | 9 bytes of space for the discarded nlist element (one byte used for | |
177 | null). SYM_EXTRA_BYTES is the extra space. */ | |
bafe0602 KR |
178 | #define SYM_EXTRA_BYTES 1024 |
179 | ||
180 | /* Set parameters about this a.out file that are machine-dependent. | |
181 | This routine is called from some_aout_object_p just before it returns. */ | |
182 | static bfd_target * | |
183 | DEFUN(MY(callback),(abfd), | |
184 | bfd *abfd) | |
185 | { | |
186 | struct internal_exec *execp = exec_hdr (abfd); | |
187 | ||
188 | /* Calculate the file positions of the parts of a newly read aout header */ | |
189 | obj_textsec (abfd)->_raw_size = N_TXTSIZE(*execp); | |
190 | ||
191 | /* The virtual memory addresses of the sections */ | |
192 | obj_textsec (abfd)->vma = N_TXTADDR(*execp); | |
193 | obj_datasec (abfd)->vma = N_DATADDR(*execp); | |
194 | obj_bsssec (abfd)->vma = N_BSSADDR(*execp); | |
195 | ||
196 | /* The file offsets of the sections */ | |
197 | obj_textsec (abfd)->filepos = N_TXTOFF (*execp); | |
198 | obj_datasec (abfd)->filepos = N_DATOFF (*execp); | |
199 | ||
200 | /* The file offsets of the relocation info */ | |
201 | obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); | |
202 | obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); | |
203 | ||
204 | /* The file offsets of the string table and symbol table. */ | |
205 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
206 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
34dd8ba3 | 207 | |
bafe0602 KR |
208 | /* Determine the architecture and machine type of the object file. */ |
209 | #ifdef SET_ARCH_MACH | |
210 | SET_ARCH_MACH(abfd, *execp); | |
211 | #else | |
212 | bfd_default_set_arch_mach(abfd, DEFAULT_ARCH, 0); | |
213 | #endif | |
214 | ||
215 | ||
216 | if (obj_aout_subformat(abfd) == gnu_encap_format) | |
217 | { | |
218 | /* The file offsets of the relocation info */ | |
219 | obj_textsec (abfd)->rel_filepos = N_GNU_TRELOFF(*execp); | |
220 | obj_datasec (abfd)->rel_filepos = N_GNU_DRELOFF(*execp); | |
34dd8ba3 | 221 | |
bafe0602 KR |
222 | /* The file offsets of the string table and symbol table. */ |
223 | obj_sym_filepos (abfd) = N_GNU_SYMOFF(*execp); | |
224 | obj_str_filepos (abfd) = (obj_sym_filepos (abfd) + execp->a_syms); | |
34dd8ba3 | 225 | |
bafe0602 KR |
226 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; |
227 | bfd_get_symcount (abfd) = execp->a_syms / 12; | |
228 | obj_symbol_entry_size (abfd) = 12; | |
229 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
230 | } | |
34dd8ba3 | 231 | |
bafe0602 KR |
232 | return abfd->xvec; |
233 | } | |
234 | ||
235 | static boolean | |
236 | DEFUN(MY(write_object_contents),(abfd), | |
237 | bfd *abfd) | |
238 | { | |
239 | struct external_exec exec_bytes; | |
240 | struct internal_exec *execp = exec_hdr (abfd); | |
34dd8ba3 | 241 | bfd_size_type text_size; /* dummy vars */ |
bafe0602 | 242 | file_ptr text_end; |
34dd8ba3 | 243 | |
bafe0602 KR |
244 | memset (&exec_bytes, 0, sizeof (exec_bytes)); |
245 | #if CHOOSE_RELOC_SIZE | |
246 | CHOOSE_RELOC_SIZE(abfd); | |
247 | #else | |
248 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
249 | #endif | |
34dd8ba3 JG |
250 | |
251 | if (adata(abfd).magic == undecided_magic) | |
252 | NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); | |
bafe0602 | 253 | execp->a_syms = 0; |
34dd8ba3 JG |
254 | |
255 | execp->a_entry = bfd_get_start_address (abfd); | |
256 | ||
257 | execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * | |
258 | obj_reloc_entry_size (abfd)); | |
259 | execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * | |
260 | obj_reloc_entry_size (abfd)); | |
261 | ||
262 | N_SET_MACHTYPE(*execp, 0xc); | |
bafe0602 | 263 | N_SET_FLAGS (*execp, 0x2); |
34dd8ba3 JG |
264 | |
265 | NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); | |
266 | ||
bafe0602 KR |
267 | /* update fields not covered by default swap_exec_header_out */ |
268 | ||
269 | /* this is really the sym table size but we store it in drelocs */ | |
270 | bfd_h_put_32 (abfd, bfd_get_symcount (abfd) * 12, exec_bytes.e_drelocs); | |
34dd8ba3 JG |
271 | |
272 | bfd_seek (abfd, 0L, false); | |
bafe0602 | 273 | bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd); |
34dd8ba3 JG |
274 | |
275 | /* Now write out reloc info, followed by syms and strings */ | |
276 | ||
277 | if (bfd_get_symcount (abfd) != 0) | |
278 | { | |
279 | bfd_seek (abfd, (long)(N_TRELOFF(*execp)), false); | |
280 | ||
281 | if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) return false; | |
282 | bfd_seek (abfd, (long)(N_DRELOFF(*execp)), false); | |
283 | ||
284 | if (!NAME(aout,squirt_out_relocs)(abfd, obj_datasec (abfd))) return false; | |
bafe0602 KR |
285 | } |
286 | ||
287 | MY(write_syms)(abfd); | |
288 | return true; | |
34dd8ba3 | 289 | } |
bafe0602 KR |
290 | |
291 | /* convert the hp symbol type to be the same as aout64.h usage so we */ | |
292 | /* can piggyback routines in aoutx.h. */ | |
293 | ||
294 | static void | |
295 | DEFUN(convert_sym_type,(sym_pointer, cache_ptr, abfd), | |
296 | struct external_nlist *sym_pointer AND | |
297 | aout_symbol_type *cache_ptr AND | |
298 | bfd *abfd) | |
299 | { | |
300 | int name_type; | |
301 | int new_type; | |
302 | ||
303 | name_type = (cache_ptr->type); | |
304 | new_type = 0; | |
34dd8ba3 | 305 | |
bafe0602 KR |
306 | if ((name_type & HP_SYMTYPE_ALIGN) != 0) |
307 | { | |
308 | /* iou_error ("aligned symbol encountered: %s", name);*/ | |
309 | name_type = 0; | |
310 | } | |
311 | ||
312 | if (name_type == HP_SYMTYPE_FILENAME) | |
313 | new_type = N_FN; | |
314 | else | |
315 | { | |
316 | switch (name_type & HP_SYMTYPE_TYPE) | |
317 | { | |
318 | case HP_SYMTYPE_UNDEFINED: | |
319 | new_type = N_UNDF; | |
320 | break; | |
321 | ||
322 | case HP_SYMTYPE_ABSOLUTE: | |
323 | new_type = N_ABS; | |
324 | break; | |
325 | ||
326 | case HP_SYMTYPE_TEXT: | |
327 | new_type = N_TEXT; | |
328 | break; | |
329 | ||
330 | case HP_SYMTYPE_DATA: | |
331 | new_type = N_DATA; | |
332 | break; | |
333 | ||
334 | case HP_SYMTYPE_BSS: | |
335 | new_type = N_BSS; | |
336 | break; | |
337 | ||
338 | case HP_SYMTYPE_COMMON: | |
339 | new_type = N_COMM; | |
340 | break; | |
341 | ||
342 | default: | |
343 | printf ("unknown symbol type encountered: %x", name_type); | |
344 | } | |
345 | if (name_type & HP_SYMTYPE_EXTERNAL) | |
346 | new_type |= N_EXT; | |
34dd8ba3 | 347 | |
bafe0602 KR |
348 | if (name_type & HP_SECONDARY_SYMBOL) |
349 | new_type = (new_type & ~N_TYPE) | N_INDR; | |
350 | } | |
351 | cache_ptr->type = new_type; | |
34dd8ba3 | 352 | |
bafe0602 KR |
353 | } |
354 | ||
355 | ||
356 | /* | |
357 | DESCRIPTION | |
358 | Swaps the information in an executable header taken from a raw | |
359 | byte stream memory image, into the internal exec_header | |
360 | structure. | |
361 | */ | |
362 | ||
363 | void | |
364 | DEFUN(NAME(aout,swap_exec_header_in),(abfd, raw_bytes, execp), | |
365 | bfd *abfd AND | |
366 | struct external_exec *raw_bytes AND | |
367 | struct internal_exec *execp) | |
368 | { | |
369 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
370 | ||
371 | /* The internal_exec structure has some fields that are unused in this | |
372 | configuration (IE for i960), so ensure that all such uninitialized | |
373 | fields are zero'd out. There are places where two of these structs | |
374 | are memcmp'd, and thus the contents do matter. */ | |
375 | memset (execp, 0, sizeof (struct internal_exec)); | |
376 | /* Now fill in fields in the execp, from the bytes in the raw data. */ | |
377 | execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); | |
378 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
379 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
380 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
381 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
382 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
383 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); | |
384 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
385 | ||
386 | /***************************************************************/ | |
387 | /* check the header to see if it was generated by a bfd output */ | |
388 | /* this is detected rather bizarely by requiring a bunch of */ | |
389 | /* header fields to be zero and an old unused field (now used) */ | |
390 | /* to be set. */ | |
391 | /***************************************************************/ | |
392 | do | |
393 | { | |
394 | long syms; | |
395 | struct aout_data_struct *rawptr; | |
396 | if (bfd_h_get_32 (abfd, bytes->e_passize) != 0) break; | |
397 | if (bfd_h_get_32 (abfd, bytes->e_syms) != 0) break; | |
398 | if (bfd_h_get_32 (abfd, bytes->e_supsize) != 0) break; | |
34dd8ba3 | 399 | |
bafe0602 KR |
400 | syms = bfd_h_get_32 (abfd, bytes->e_drelocs); |
401 | if (syms == 0) break; | |
402 | ||
403 | /* OK, we've passed the test as best as we can determine */ | |
404 | execp->a_syms = syms; | |
405 | ||
406 | /* allocate storage for where we will store this result */ | |
407 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (*rawptr)); | |
408 | ||
409 | if (rawptr == NULL) { | |
410 | bfd_error = no_memory; | |
411 | return; | |
412 | } | |
413 | abfd->tdata.aout_data = rawptr; | |
414 | obj_aout_subformat(abfd) = gnu_encap_format; | |
415 | } while (0); | |
416 | } | |
417 | ||
418 | ||
419 | /* The hp symbol table is a bit different than other a.out targets. Instead | |
420 | of having an array of nlist items and an array of strings, hp's format | |
421 | has them mixed together in one structure. In addition, the strings are | |
422 | not null terminated. It looks something like this: | |
423 | ||
424 | nlist element 1 | |
425 | string1 | |
426 | nlist element 2 | |
427 | string2 | |
428 | ... | |
429 | ||
430 | The whole symbol table is read as one chunk and then we march thru it | |
431 | and convert it to canonical form. As we march thru the table, we copy | |
432 | the nlist data into the internal form and we compact the strings and null | |
433 | terminate them, using storage from the already allocated symbol table: | |
434 | ||
435 | string1 | |
436 | null | |
437 | string2 | |
438 | null | |
439 | ... | |
440 | */ | |
441 | ||
442 | boolean | |
443 | DEFUN(MY(slurp_symbol_table),(abfd), | |
444 | bfd *abfd) | |
445 | { | |
446 | bfd_size_type symbol_bytes; | |
447 | struct external_nlist *syms; | |
448 | struct external_nlist *sym_pointer; | |
449 | struct external_nlist *sym_end; | |
450 | char *strings; | |
451 | aout_symbol_type *cached; | |
452 | unsigned num_syms = 0; | |
453 | unsigned num_secondary = 0; | |
34dd8ba3 | 454 | |
bafe0602 KR |
455 | /* If there's no work to be done, don't do any */ |
456 | if (obj_aout_symbols (abfd) != (aout_symbol_type *)NULL) return true; | |
457 | symbol_bytes = exec_hdr(abfd)->a_syms; | |
458 | if (symbol_bytes == 0) { | |
459 | bfd_error = no_symbols; | |
460 | return false; | |
461 | } | |
462 | ||
463 | strings = (char *) bfd_alloc(abfd, | |
464 | symbol_bytes + SYM_EXTRA_BYTES); | |
465 | syms = (struct external_nlist *) (strings + SYM_EXTRA_BYTES); | |
466 | bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET); | |
467 | if (bfd_read ((PTR)syms, symbol_bytes, 1, abfd) != symbol_bytes) | |
468 | { | |
469 | bfd_release (abfd, syms); | |
470 | return false; | |
471 | } | |
34dd8ba3 | 472 | |
bafe0602 KR |
473 | |
474 | sym_end = (struct external_nlist *) (((char *)syms) + symbol_bytes); | |
34dd8ba3 | 475 | |
bafe0602 | 476 | /* first, march thru the table and figure out how many symbols there are */ |
34dd8ba3 | 477 | for (sym_pointer = syms; sym_pointer < sym_end; sym_pointer++, num_syms++) |
bafe0602 KR |
478 | { |
479 | if (bfd_get_8(abfd, sym_pointer->e_type) & HP_SECONDARY_SYMBOL) | |
480 | num_secondary++; | |
481 | /* skip over the embedded symbol. */ | |
482 | sym_pointer = (struct external_nlist *) (((char *)sym_pointer) + | |
483 | sym_pointer->e_length[0]); | |
484 | } | |
485 | ||
486 | /* now that we know the symbol count, update the bfd header */ | |
487 | bfd_get_symcount (abfd) = num_syms+num_secondary; | |
34dd8ba3 | 488 | |
bafe0602 KR |
489 | cached = (aout_symbol_type *) |
490 | bfd_zalloc(abfd, (bfd_size_type)(bfd_get_symcount (abfd) * | |
491 | sizeof(aout_symbol_type))); | |
34dd8ba3 | 492 | |
bafe0602 KR |
493 | /* as we march thru the hp symbol table, convert it into a list of |
494 | null terminated strings to hold the symbol names. Make sure any | |
495 | assignment to the strings pointer is done after we're thru using | |
496 | the nlist so we don't overwrite anything important. */ | |
497 | num_secondary = 0; | |
34dd8ba3 | 498 | |
bafe0602 KR |
499 | /* OK, now walk the new symtable, cacheing symbol properties */ |
500 | { | |
501 | aout_symbol_type *cache_ptr = cached; | |
502 | aout_symbol_type cache_save; | |
503 | /* Run through table and copy values */ | |
504 | for (sym_pointer = syms, cache_ptr = cached; | |
34dd8ba3 | 505 | sym_pointer < sym_end; sym_pointer++, cache_ptr++) |
bafe0602 KR |
506 | { |
507 | unsigned int length; | |
508 | cache_ptr->symbol.the_bfd = abfd; | |
509 | cache_ptr->symbol.value = GET_SWORD(abfd, sym_pointer->e_value); | |
510 | cache_ptr->desc = bfd_get_16(abfd, sym_pointer->e_almod); | |
511 | cache_ptr->type = bfd_get_8(abfd, sym_pointer->e_type); | |
512 | cache_ptr->symbol.udata = 0; | |
513 | length = bfd_get_8(abfd, sym_pointer->e_length); | |
514 | cache_ptr->other = length; /* other not used, save length here */ | |
34dd8ba3 | 515 | |
bafe0602 KR |
516 | cache_save = *cache_ptr; |
517 | convert_sym_type(sym_pointer, cache_ptr, abfd); | |
ebd24135 | 518 | translate_from_native_sym_flags (sym_pointer, cache_ptr, abfd); |
bafe0602 KR |
519 | |
520 | /********************************************************/ | |
521 | /* for hpux, the 'lenght' value indicates the length of */ | |
522 | /* the symbol name which follows the nlist entry. */ | |
523 | /********************************************************/ | |
524 | if (length) | |
525 | { | |
526 | /**************************************************************/ | |
527 | /* the hp string is not null terminated so we create a new one*/ | |
528 | /* by copying the string to overlap the just vacated nlist */ | |
529 | /* structure before it in memory. */ | |
530 | /**************************************************************/ | |
531 | cache_ptr->symbol.name = strings; | |
532 | memcpy(strings, sym_pointer+1, length); | |
533 | strings[length] = '\0'; | |
534 | strings += length + 1; | |
535 | } | |
536 | else | |
537 | cache_ptr->symbol.name = (char *)NULL; | |
34dd8ba3 | 538 | |
bafe0602 KR |
539 | /**********************************************************/ |
540 | /* this is a bit of a kludge, but a secondary hp symbol */ | |
541 | /* gets translated into a gnu indirect symbol. When this */ | |
542 | /* happens, we need to create a "dummy" record to which */ | |
543 | /* we can point the indirect symbol to. */ | |
544 | /**********************************************************/ | |
545 | if ((cache_ptr->type | N_EXT) == (N_INDR | N_EXT)) | |
546 | { | |
547 | aout_symbol_type *cache_ptr2 = cached + num_syms+num_secondary; | |
548 | ||
549 | num_secondary++; | |
550 | ||
551 | /* aoutx.h assumes the "next" value is the indirect sym */ | |
552 | /* since we don't want to disturb the order by inserting */ | |
553 | /* a new symbol, we tack on the created secondary syms */ | |
554 | /* at the end. */ | |
555 | cache_ptr->symbol.value = (bfd_vma)(cache_ptr2); | |
556 | *cache_ptr2 = cache_save; | |
557 | cache_ptr2->symbol.name = strings; | |
558 | memcpy(strings, cache_ptr->symbol.name, length); | |
559 | strcpy(strings+length,":secondry"); /* 9 max chars + null */ | |
560 | strings += length+10; | |
561 | cache_ptr2->type &= ~HP_SECONDARY_SYMBOL; /* clear secondary */ | |
562 | convert_sym_type(sym_pointer, cache_ptr2, abfd); | |
ebd24135 ILT |
563 | translate_from_native_sym_flags (sym_pointer, cache_ptr2, |
564 | abfd); | |
bafe0602 KR |
565 | } |
566 | ||
567 | /* skip over the embedded symbol. */ | |
568 | sym_pointer = (struct external_nlist *) (((char *)sym_pointer) + | |
569 | length); | |
570 | } | |
571 | } | |
572 | ||
573 | obj_aout_symbols (abfd) = cached; | |
34dd8ba3 | 574 | |
bafe0602 KR |
575 | return true; |
576 | } | |
577 | ||
578 | ||
579 | ||
580 | void | |
581 | DEFUN(MY(swap_std_reloc_in), (abfd, bytes, cache_ptr, symbols), | |
582 | bfd *abfd AND | |
583 | struct hp300hpux_reloc *bytes AND | |
584 | arelent *cache_ptr AND | |
585 | asymbol **symbols) | |
586 | { | |
587 | int r_index; | |
588 | int r_extern = 0; | |
589 | unsigned int r_length; | |
590 | int r_pcrel = 0; | |
bafe0602 KR |
591 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
592 | ||
34dd8ba3 | 593 | cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address); |
bafe0602 | 594 | r_index = bfd_h_get_16(abfd, bytes->r_index); |
34dd8ba3 | 595 | |
bafe0602 KR |
596 | switch (bytes->r_type[0]) |
597 | { | |
598 | case HP_RSEGMENT_TEXT: | |
599 | r_index = N_TEXT; | |
600 | break; | |
601 | case HP_RSEGMENT_DATA: | |
602 | r_index = N_DATA; | |
603 | break; | |
604 | case HP_RSEGMENT_BSS: | |
605 | r_index = N_BSS; | |
606 | break; | |
607 | case HP_RSEGMENT_EXTERNAL: | |
608 | r_extern = 1; | |
609 | break; | |
610 | case HP_RSEGMENT_PCREL: | |
611 | r_extern = 1; | |
612 | r_pcrel = 1; | |
613 | break; | |
614 | case HP_RSEGMENT_RDLT: | |
615 | break; | |
616 | case HP_RSEGMENT_RPLT: | |
617 | break; | |
618 | case HP_RSEGMENT_NOOP: | |
619 | break; | |
620 | default: | |
621 | printf | |
622 | ("illegal relocation segment type: %x\n", (bytes->r_type[0])); | |
623 | } | |
34dd8ba3 | 624 | |
bafe0602 KR |
625 | switch (bytes->r_length[0]) |
626 | { | |
627 | case HP_RLENGTH_BYTE: | |
628 | r_length = 0; | |
629 | break; | |
630 | case HP_RLENGTH_WORD: | |
631 | r_length = 1; | |
632 | break; | |
633 | case HP_RLENGTH_LONG: | |
634 | r_length = 2; | |
635 | break; | |
636 | default: | |
637 | printf("illegal relocation length: %x\n",bytes->r_length[0] ); | |
ebd24135 | 638 | r_length = 0; |
bafe0602 KR |
639 | } |
640 | ||
641 | cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel; | |
642 | /* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */ | |
643 | ||
644 | /* This macro uses the r_index value computed above */ | |
645 | if (r_pcrel && r_extern) | |
646 | { | |
647 | /* The GNU linker assumes any offset from beginning of section */ | |
648 | /* is already incorporated into the image while the HP linker */ | |
649 | /* adds this in later. Add it in now... */ | |
650 | MOVE_ADDRESS( - cache_ptr->address); | |
651 | } | |
652 | else | |
653 | { | |
654 | MOVE_ADDRESS(0); | |
655 | } | |
656 | } | |
657 | ||
658 | boolean | |
659 | DEFUN(MY(slurp_reloc_table),(abfd, asect, symbols), | |
660 | bfd *abfd AND | |
661 | sec_ptr asect AND | |
662 | asymbol **symbols) | |
663 | { | |
664 | unsigned int count; | |
665 | bfd_size_type reloc_size; | |
666 | PTR relocs; | |
667 | arelent *reloc_cache; | |
668 | size_t each_size; | |
669 | struct hp300hpux_reloc *rptr; | |
670 | unsigned int counter; | |
671 | arelent *cache_ptr; | |
34dd8ba3 | 672 | |
bafe0602 KR |
673 | if (asect->relocation) return true; |
674 | ||
675 | if (asect->flags & SEC_CONSTRUCTOR) return true; | |
676 | ||
677 | if (asect == obj_datasec (abfd)) { | |
678 | reloc_size = exec_hdr(abfd)->a_drsize; | |
679 | goto doit; | |
680 | } | |
681 | ||
682 | if (asect == obj_textsec (abfd)) { | |
683 | reloc_size = exec_hdr(abfd)->a_trsize; | |
684 | goto doit; | |
685 | } | |
686 | ||
687 | bfd_error = invalid_operation; | |
688 | return false; | |
689 | ||
690 | doit: | |
691 | bfd_seek (abfd, asect->rel_filepos, SEEK_SET); | |
692 | each_size = obj_reloc_entry_size (abfd); | |
693 | ||
694 | count = reloc_size / each_size; | |
695 | ||
696 | ||
697 | reloc_cache = (arelent *) bfd_zalloc (abfd, (size_t)(count * sizeof | |
698 | (arelent))); | |
699 | if (!reloc_cache) { | |
700 | nomem: | |
701 | bfd_error = no_memory; | |
702 | return false; | |
703 | } | |
704 | ||
705 | relocs = (PTR) bfd_alloc (abfd, reloc_size); | |
706 | if (!relocs) { | |
707 | bfd_release (abfd, reloc_cache); | |
708 | goto nomem; | |
709 | } | |
710 | ||
711 | if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) { | |
712 | bfd_release (abfd, relocs); | |
713 | bfd_release (abfd, reloc_cache); | |
714 | bfd_error = system_call_error; | |
715 | return false; | |
716 | } | |
717 | ||
718 | rptr = (struct hp300hpux_reloc*) relocs; | |
719 | counter = 0; | |
720 | cache_ptr = reloc_cache; | |
721 | ||
722 | for (; counter < count; counter++, rptr++, cache_ptr++) { | |
723 | MY(swap_std_reloc_in)(abfd, rptr, cache_ptr, symbols); | |
724 | } | |
725 | ||
726 | ||
727 | bfd_release (abfd,relocs); | |
728 | asect->relocation = reloc_cache; | |
729 | asect->reloc_count = count; | |
730 | return true; | |
731 | } | |
732 | ||
733 | ||
734 | /************************************************************************/ | |
735 | /* The following functions are identical to functions in aoutx.h except */ | |
736 | /* they refer to MY(func) rather than NAME(aout,func) and they also */ | |
737 | /* call aout_32 versions if the input file was generated by gcc */ | |
738 | /************************************************************************/ | |
739 | ||
740 | unsigned int aout_32_get_symtab PARAMS((bfd *abfd, asymbol **location)); | |
741 | unsigned int aout_32_get_symtab_upper_bound PARAMS ((bfd *abfd)); | |
742 | ||
743 | unsigned int aout_32_canonicalize_reloc PARAMS((bfd *abfd, sec_ptr section, | |
744 | arelent **relptr, | |
745 | asymbol **symbols)); | |
746 | ||
747 | unsigned int | |
748 | DEFUN(MY(get_symtab),(abfd, location), | |
749 | bfd *abfd AND | |
750 | asymbol **location) | |
751 | { | |
752 | unsigned int counter = 0; | |
753 | aout_symbol_type *symbase; | |
754 | ||
755 | if (obj_aout_subformat(abfd) == gnu_encap_format) | |
756 | return aout_32_get_symtab(abfd,location); | |
34dd8ba3 | 757 | |
bafe0602 KR |
758 | if (!MY(slurp_symbol_table)(abfd)) return 0; |
759 | ||
760 | for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);) | |
761 | *(location++) = (asymbol *)( symbase++); | |
762 | *location++ =0; | |
763 | return bfd_get_symcount (abfd); | |
764 | } | |
765 | ||
766 | unsigned int | |
767 | DEFUN(MY(get_symtab_upper_bound),(abfd), | |
768 | bfd *abfd) | |
769 | { | |
770 | if (obj_aout_subformat(abfd) == gnu_encap_format) | |
771 | return aout_32_get_symtab_upper_bound(abfd); | |
772 | if (!MY(slurp_symbol_table)(abfd)) return 0; | |
773 | ||
774 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
775 | } | |
776 | ||
777 | ||
778 | ||
779 | ||
780 | unsigned int | |
781 | DEFUN(MY(canonicalize_reloc),(abfd, section, relptr, symbols), | |
782 | bfd *abfd AND | |
783 | sec_ptr section AND | |
784 | arelent **relptr AND | |
785 | asymbol **symbols) | |
786 | { | |
787 | arelent *tblptr = section->relocation; | |
788 | unsigned int count; | |
789 | if (obj_aout_subformat(abfd) == gnu_encap_format) | |
34dd8ba3 | 790 | return aout_32_canonicalize_reloc(abfd,section,relptr,symbols); |
bafe0602 KR |
791 | |
792 | if (!(tblptr || MY(slurp_reloc_table)(abfd, section, symbols))) | |
793 | return 0; | |
794 | ||
795 | if (section->flags & SEC_CONSTRUCTOR) { | |
796 | arelent_chain *chain = section->constructor_chain; | |
797 | for (count = 0; count < section->reloc_count; count ++) { | |
798 | *relptr ++ = &chain->relent; | |
799 | chain = chain->next; | |
800 | } | |
801 | } | |
802 | else { | |
803 | tblptr = section->relocation; | |
804 | if (!tblptr) return 0; | |
805 | ||
34dd8ba3 | 806 | for (count = 0; count++ < section->reloc_count;) |
bafe0602 KR |
807 | { |
808 | *relptr++ = tblptr++; | |
809 | } | |
810 | } | |
811 | *relptr = 0; | |
812 | ||
813 | return section->reloc_count; | |
814 | } | |
815 | ||
816 | ||
817 | #include "aout-target.h" |