Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* BFD backend for hp-ux 9000/300 |
219d1afa | 2 | Copyright (C) 1990-2018 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Glenn Engel. |
4 | ||
cd123cb7 | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
cd123cb7 NC |
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 3 of the License, or | |
10 | (at your option) any later version. | |
252b5132 | 11 | |
cd123cb7 NC |
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. | |
252b5132 | 16 | |
cd123cb7 NC |
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., 51 Franklin Street - Fifth Floor, Boston, | |
20 | MA 02110-1301, USA. */ | |
252b5132 | 21 | |
cd123cb7 | 22 | |
07d6d2b8 AM |
23 | /* hpux native ------------> | | |
24 | | hp300hpux bfd | ----------> hpux w/gnu ext | |
25 | hpux w/gnu extension ----> | | | |
252b5132 | 26 | |
252b5132 RH |
27 | Support for the 9000/[34]00 has several limitations. |
28 | 1. Shared libraries are not supported. | |
29 | 2. The output format from this bfd is not usable by native tools. | |
30 | ||
31 | The primary motivation for writing this bfd was to allow use of | |
32 | gdb and gcc for host based debugging and not to mimic the hp-ux tools | |
33 | in every detail. This leads to a significant simplification of the | |
34 | code and a leap in performance. The decision to not output hp native | |
35 | compatible objects was further strengthened by the fact that the richness | |
36 | of the gcc compiled objects could not be represented without loss of | |
37 | information. For example, while the hp format supports the concept of | |
38 | secondary symbols, it does not support indirect symbols. Another | |
39 | reason is to maintain backwards compatibility with older implementations | |
40 | of gcc on hpux which used 'hpxt' to translate .a and .o files into a | |
41 | format which could be readily understood by the gnu linker and gdb. | |
42 | This allows reading hp secondary symbols and converting them into | |
43 | indirect symbols but the reverse it not always possible. | |
44 | ||
45 | Another example of differences is that the hp format stores symbol offsets | |
46 | in the object code while the gnu utilities use a field in the | |
47 | relocation record for this. To support the hp native format, the object | |
48 | code would need to be patched with the offsets when producing .o files. | |
49 | ||
50 | The basic technique taken in this implementation is to #include the code | |
51 | from aoutx.h and aout-target.h with appropriate #defines to override | |
52 | code where a unique implementation is needed: | |
53 | ||
54 | { | |
07d6d2b8 AM |
55 | #define a bunch of stuff |
56 | #include <aoutx.h> | |
252b5132 | 57 | |
07d6d2b8 | 58 | implement a bunch of functions |
252b5132 | 59 | |
07d6d2b8 | 60 | #include "aout-target.h" |
252b5132 RH |
61 | } |
62 | ||
63 | The hp symbol table is a bit different than other a.out targets. Instead | |
64 | of having an array of nlist items and an array of strings, hp's format | |
65 | has them mixed together in one structure. In addition, the strings are | |
66 | not null terminated. It looks something like this: | |
67 | ||
68 | nlist element 1 | |
69 | string1 | |
70 | nlist element 2 | |
71 | string2 | |
72 | ... | |
73 | ||
74 | The whole symbol table is read as one chunk and then we march thru it | |
75 | and convert it to canonical form. As we march thru the table, we copy | |
76 | the nlist data into the internal form and we compact the strings and null | |
77 | terminate them, using storage from the already allocated symbol table: | |
78 | ||
79 | string1 | |
80 | null | |
81 | string2 | |
82 | null | |
83 | */ | |
84 | ||
85 | /* @@ Is this really so different from normal a.out that it needs to include | |
86 | aoutx.h? We should go through this file sometime and see what can be made | |
87 | more dependent on aout32.o and what might need to be broken off and accessed | |
88 | through the backend_data field. Or, maybe we really do need such a | |
89 | completely separate implementation. I don't have time to investigate this | |
90 | much further right now. [raeburn:19930428.2124EST] */ | |
91 | /* @@ Also, note that there wind up being two versions of some routines, with | |
92 | different names, only one of which actually gets used. For example: | |
93 | slurp_symbol_table | |
94 | swap_std_reloc_in | |
95 | slurp_reloc_table | |
6cee3f79 | 96 | canonicalize_symtab |
252b5132 RH |
97 | get_symtab_upper_bound |
98 | canonicalize_reloc | |
99 | mkobject | |
100 | This should also be fixed. */ | |
101 | ||
102 | #define TARGETNAME "a.out-hp300hpux" | |
e43d48cc AM |
103 | |
104 | /* Do not "beautify" the CONCAT* macro args. Traditional C will not | |
105 | remove whitespace added here, and thus will fail to concatenate | |
106 | the tokens. */ | |
6d00b590 | 107 | #define MY(OP) CONCAT2 (m68k_aout_hp300hpux_,OP) |
252b5132 RH |
108 | |
109 | #define external_exec hp300hpux_exec_bytes | |
110 | #define external_nlist hp300hpux_nlist_bytes | |
111 | ||
112 | #include "aout/hp300hpux.h" | |
113 | ||
114 | /* define these so we can compile unused routines in aoutx.h */ | |
115 | #define e_strx e_shlib | |
116 | #define e_other e_length | |
117 | #define e_desc e_almod | |
118 | ||
119 | #define AR_PAD_CHAR '/' | |
120 | #define TARGET_IS_BIG_ENDIAN_P | |
121 | #define DEFAULT_ARCH bfd_arch_m68k | |
122 | ||
123 | #define MY_get_section_contents aout_32_get_section_contents | |
124 | #define MY_slurp_armap bfd_slurp_bsd_armap_f2 | |
125 | ||
126 | /***********************************************/ | |
127 | /* provide overrides for routines in this file */ | |
128 | /***********************************************/ | |
129 | /* these don't use MY because that causes problems within JUMP_TABLE | |
e43d48cc | 130 | (CONCAT2 winds up being expanded recursively, which ANSI C compilers |
252b5132 | 131 | will not do). */ |
6d00b590 AM |
132 | #define MY_canonicalize_symtab m68k_aout_hp300hpux_canonicalize_symtab |
133 | #define MY_get_symtab_upper_bound m68k_aout_hp300hpux_get_symtab_upper_bound | |
134 | #define MY_canonicalize_reloc m68k_aout_hp300hpux_canonicalize_reloc | |
135 | #define MY_write_object_contents m68k_aout_hp300hpux_write_object_contents | |
252b5132 RH |
136 | |
137 | #define MY_read_minisymbols _bfd_generic_read_minisymbols | |
138 | #define MY_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol | |
139 | ||
140 | #define MY_bfd_link_hash_table_create _bfd_generic_link_hash_table_create | |
141 | #define MY_bfd_link_add_symbols _bfd_generic_link_add_symbols | |
142 | #define MY_final_link_callback unused | |
143 | #define MY_bfd_final_link _bfd_generic_final_link | |
144 | ||
145 | /* Until and unless we convert the slurp_reloc and slurp_symtab | |
146 | routines in this file, we can not use the default aout | |
147 | free_cached_info routine which assumes that the relocs and symtabs | |
148 | were allocated using malloc. */ | |
d00dd7dc | 149 | #define MY_bfd_free_cached_info _bfd_bool_bfd_true |
252b5132 | 150 | |
6d00b590 | 151 | #define m68k_aout_hp300hpux_write_syms aout_32_write_syms |
252b5132 RH |
152 | |
153 | #define MY_callback MY(callback) | |
154 | ||
155 | #define MY_exec_hdr_flags 0x2 | |
156 | ||
157 | #define NAME_swap_exec_header_in NAME(hp300hpux_32_,swap_exec_header_in) | |
158 | ||
159 | #define HP_SYMTYPE_UNDEFINED 0x00 | |
160 | #define HP_SYMTYPE_ABSOLUTE 0x01 | |
161 | #define HP_SYMTYPE_TEXT 0x02 | |
162 | #define HP_SYMTYPE_DATA 0x03 | |
163 | #define HP_SYMTYPE_BSS 0x04 | |
164 | #define HP_SYMTYPE_COMMON 0x05 | |
165 | ||
166 | #define HP_SYMTYPE_TYPE 0x0F | |
167 | #define HP_SYMTYPE_FILENAME 0x1F | |
168 | ||
169 | #define HP_SYMTYPE_ALIGN 0x10 | |
170 | #define HP_SYMTYPE_EXTERNAL 0x20 | |
07d6d2b8 | 171 | #define HP_SECONDARY_SYMBOL 0x40 |
252b5132 RH |
172 | |
173 | /* RELOCATION DEFINITIONS */ | |
174 | #define HP_RSEGMENT_TEXT 0x00 | |
175 | #define HP_RSEGMENT_DATA 0x01 | |
176 | #define HP_RSEGMENT_BSS 0x02 | |
177 | #define HP_RSEGMENT_EXTERNAL 0x03 | |
07d6d2b8 AM |
178 | #define HP_RSEGMENT_PCREL 0x04 |
179 | #define HP_RSEGMENT_RDLT 0x05 | |
180 | #define HP_RSEGMENT_RPLT 0x06 | |
252b5132 RH |
181 | #define HP_RSEGMENT_NOOP 0x3F |
182 | ||
183 | #define HP_RLENGTH_BYTE 0x00 | |
184 | #define HP_RLENGTH_WORD 0x01 | |
185 | #define HP_RLENGTH_LONG 0x02 | |
186 | #define HP_RLENGTH_ALIGN 0x03 | |
187 | ||
e43d48cc | 188 | #define NAME(x,y) CONCAT3 (hp300hpux,_32_,y) |
252b5132 RH |
189 | #define ARCH_SIZE 32 |
190 | ||
191 | /* aoutx.h requires definitions for BMAGIC and QMAGIC. */ | |
192 | #define BMAGIC HPUX_DOT_O_MAGIC | |
193 | #define QMAGIC 0314 | |
194 | ||
195 | #include "aoutx.h" | |
196 | ||
2c3fc389 NC |
197 | static const bfd_target * MY (callback) (bfd *); |
198 | static bfd_boolean MY (write_object_contents) (bfd *); | |
b34976b6 | 199 | static void convert_sym_type |
2c3fc389 | 200 | (struct external_nlist *, aout_symbol_type *, bfd *); |
b34976b6 | 201 | |
2c3fc389 | 202 | bfd_boolean MY (slurp_symbol_table) (bfd *); |
b34976b6 | 203 | void MY (swap_std_reloc_in) |
2c3fc389 | 204 | (bfd *, struct hp300hpux_reloc *, arelent *, asymbol **, bfd_size_type); |
b34976b6 | 205 | bfd_boolean MY (slurp_reloc_table) |
2c3fc389 NC |
206 | (bfd *, sec_ptr, asymbol **); |
207 | long MY (canonicalize_symtab) (bfd *, asymbol **); | |
208 | long MY (get_symtab_upper_bound) (bfd *); | |
209 | long MY (canonicalize_reloc) (bfd *, sec_ptr, arelent **, asymbol **); | |
e4b17274 | 210 | |
252b5132 RH |
211 | /* Since the hpux symbol table has nlist elements interspersed with |
212 | strings and we need to insert som strings for secondary symbols, we | |
213 | give ourselves a little extra padding up front to account for | |
214 | this. Note that for each non-secondary symbol we process, we gain | |
215 | 9 bytes of space for the discarded nlist element (one byte used for | |
216 | null). SYM_EXTRA_BYTES is the extra space. */ | |
217 | #define SYM_EXTRA_BYTES 1024 | |
218 | ||
219 | /* Set parameters about this a.out file that are machine-dependent. | |
220 | This routine is called from some_aout_object_p just before it returns. */ | |
221 | static const bfd_target * | |
2c3fc389 | 222 | MY (callback) (bfd *abfd) |
252b5132 RH |
223 | { |
224 | struct internal_exec *execp = exec_hdr (abfd); | |
225 | ||
226 | /* Calculate the file positions of the parts of a newly read aout header */ | |
bbb1afc8 | 227 | obj_textsec (abfd)->size = N_TXTSIZE (execp); |
252b5132 RH |
228 | |
229 | /* The virtual memory addresses of the sections */ | |
bbb1afc8 AM |
230 | obj_textsec (abfd)->vma = N_TXTADDR (execp); |
231 | obj_datasec (abfd)->vma = N_DATADDR (execp); | |
232 | obj_bsssec (abfd)->vma = N_BSSADDR (execp); | |
252b5132 RH |
233 | |
234 | obj_textsec (abfd)->lma = obj_textsec (abfd)->vma; | |
235 | obj_datasec (abfd)->lma = obj_datasec (abfd)->vma; | |
236 | obj_bsssec (abfd)->lma = obj_bsssec (abfd)->vma; | |
237 | ||
238 | /* The file offsets of the sections */ | |
bbb1afc8 AM |
239 | obj_textsec (abfd)->filepos = N_TXTOFF (execp); |
240 | obj_datasec (abfd)->filepos = N_DATOFF (execp); | |
252b5132 RH |
241 | |
242 | /* The file offsets of the relocation info */ | |
bbb1afc8 AM |
243 | obj_textsec (abfd)->rel_filepos = N_TRELOFF (execp); |
244 | obj_datasec (abfd)->rel_filepos = N_DRELOFF (execp); | |
252b5132 RH |
245 | |
246 | /* The file offsets of the string table and symbol table. */ | |
bbb1afc8 AM |
247 | obj_sym_filepos (abfd) = N_SYMOFF (execp); |
248 | obj_str_filepos (abfd) = N_STROFF (execp); | |
252b5132 RH |
249 | |
250 | /* Determine the architecture and machine type of the object file. */ | |
251 | #ifdef SET_ARCH_MACH | |
bbb1afc8 | 252 | SET_ARCH_MACH (abfd, execp); |
252b5132 RH |
253 | #else |
254 | bfd_default_set_arch_mach (abfd, DEFAULT_ARCH, 0); | |
255 | #endif | |
256 | ||
252b5132 RH |
257 | if (obj_aout_subformat (abfd) == gnu_encap_format) |
258 | { | |
259 | /* The file offsets of the relocation info */ | |
bbb1afc8 AM |
260 | obj_textsec (abfd)->rel_filepos = N_GNU_TRELOFF (execp); |
261 | obj_datasec (abfd)->rel_filepos = N_GNU_DRELOFF (execp); | |
252b5132 RH |
262 | |
263 | /* The file offsets of the string table and symbol table. */ | |
bbb1afc8 | 264 | obj_sym_filepos (abfd) = N_GNU_SYMOFF (execp); |
252b5132 RH |
265 | obj_str_filepos (abfd) = (obj_sym_filepos (abfd) + execp->a_syms); |
266 | ||
267 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
268 | bfd_get_symcount (abfd) = execp->a_syms / 12; | |
269 | obj_symbol_entry_size (abfd) = 12; | |
270 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
271 | } | |
272 | ||
273 | return abfd->xvec; | |
274 | } | |
275 | ||
2c3fc389 | 276 | extern bfd_boolean aout_32_write_syms (bfd *); |
252b5132 | 277 | |
b34976b6 | 278 | static bfd_boolean |
2c3fc389 | 279 | MY (write_object_contents) (bfd * abfd) |
252b5132 RH |
280 | { |
281 | struct external_exec exec_bytes; | |
282 | struct internal_exec *execp = exec_hdr (abfd); | |
252b5132 RH |
283 | |
284 | memset (&exec_bytes, 0, sizeof (exec_bytes)); | |
8ba8a462 | 285 | |
252b5132 | 286 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; |
252b5132 RH |
287 | |
288 | if (adata (abfd).magic == undecided_magic) | |
3a8c4a5b | 289 | NAME (aout,adjust_sizes_and_vmas) (abfd); |
252b5132 RH |
290 | execp->a_syms = 0; |
291 | ||
292 | execp->a_entry = bfd_get_start_address (abfd); | |
293 | ||
294 | execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * | |
295 | obj_reloc_entry_size (abfd)); | |
296 | execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * | |
297 | obj_reloc_entry_size (abfd)); | |
298 | ||
bbb1afc8 AM |
299 | N_SET_MACHTYPE (execp, 0xc); |
300 | N_SET_FLAGS (execp, aout_backend_info (abfd)->exec_hdr_flags); | |
252b5132 RH |
301 | |
302 | NAME (aout,swap_exec_header_out) (abfd, execp, &exec_bytes); | |
303 | ||
304 | /* update fields not covered by default swap_exec_header_out */ | |
305 | ||
306 | /* this is really the sym table size but we store it in drelocs */ | |
dc810e39 | 307 | H_PUT_32 (abfd, (bfd_get_symcount (abfd) * 12), exec_bytes.e_drelocs); |
252b5132 | 308 | |
b34976b6 | 309 | if (bfd_seek (abfd, (file_ptr) 0, FALSE) != 0 |
2c3fc389 | 310 | || (bfd_bwrite (&exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, abfd) |
252b5132 | 311 | != EXEC_BYTES_SIZE)) |
b34976b6 | 312 | return FALSE; |
252b5132 RH |
313 | |
314 | /* Write out the symbols, and then the relocs. We must write out | |
315 | the symbols first so that we know the symbol indices. */ | |
316 | ||
317 | if (bfd_get_symcount (abfd) != 0) | |
318 | { | |
319 | /* Skip the relocs to where we want to put the symbols. */ | |
bbb1afc8 | 320 | if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (execp) + execp->a_drsize), |
252b5132 | 321 | SEEK_SET) != 0) |
b34976b6 | 322 | return FALSE; |
252b5132 RH |
323 | } |
324 | ||
325 | if (!MY (write_syms) (abfd)) | |
b34976b6 | 326 | return FALSE; |
252b5132 RH |
327 | |
328 | if (bfd_get_symcount (abfd) != 0) | |
329 | { | |
bbb1afc8 | 330 | if (bfd_seek (abfd, (file_ptr) N_TRELOFF (execp), SEEK_CUR) != 0) |
b34976b6 | 331 | return FALSE; |
252b5132 | 332 | if (!NAME (aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) |
b34976b6 | 333 | return FALSE; |
bbb1afc8 | 334 | if (bfd_seek (abfd, (file_ptr) N_DRELOFF (execp), SEEK_CUR) != 0) |
b34976b6 | 335 | return FALSE; |
252b5132 | 336 | if (!NAME (aout,squirt_out_relocs) (abfd, obj_datasec (abfd))) |
b34976b6 | 337 | return FALSE; |
252b5132 RH |
338 | } |
339 | ||
b34976b6 | 340 | return TRUE; |
252b5132 RH |
341 | } |
342 | ||
2c3fc389 NC |
343 | /* Convert the hp symbol type to be the same as aout64.h usage so we |
344 | can piggyback routines in aoutx.h. */ | |
252b5132 RH |
345 | |
346 | static void | |
2c3fc389 NC |
347 | convert_sym_type (struct external_nlist *sym_pointer ATTRIBUTE_UNUSED, |
348 | aout_symbol_type *cache_ptr, | |
349 | bfd *abfd ATTRIBUTE_UNUSED) | |
252b5132 RH |
350 | { |
351 | int name_type; | |
352 | int new_type; | |
353 | ||
354 | name_type = (cache_ptr->type); | |
355 | new_type = 0; | |
356 | ||
357 | if ((name_type & HP_SYMTYPE_ALIGN) != 0) | |
358 | { | |
359 | /* iou_error ("aligned symbol encountered: %s", name);*/ | |
360 | name_type = 0; | |
361 | } | |
362 | ||
363 | if (name_type == HP_SYMTYPE_FILENAME) | |
364 | new_type = N_FN; | |
365 | else | |
366 | { | |
367 | switch (name_type & HP_SYMTYPE_TYPE) | |
368 | { | |
369 | case HP_SYMTYPE_UNDEFINED: | |
370 | new_type = N_UNDF; | |
371 | break; | |
372 | ||
373 | case HP_SYMTYPE_ABSOLUTE: | |
374 | new_type = N_ABS; | |
375 | break; | |
376 | ||
377 | case HP_SYMTYPE_TEXT: | |
378 | new_type = N_TEXT; | |
379 | break; | |
380 | ||
381 | case HP_SYMTYPE_DATA: | |
382 | new_type = N_DATA; | |
383 | break; | |
384 | ||
385 | case HP_SYMTYPE_BSS: | |
386 | new_type = N_BSS; | |
387 | break; | |
388 | ||
389 | case HP_SYMTYPE_COMMON: | |
390 | new_type = N_COMM; | |
391 | break; | |
392 | ||
393 | default: | |
394 | abort (); | |
395 | break; | |
396 | } | |
397 | if (name_type & HP_SYMTYPE_EXTERNAL) | |
398 | new_type |= N_EXT; | |
399 | ||
400 | if (name_type & HP_SECONDARY_SYMBOL) | |
401 | { | |
402 | switch (new_type) | |
403 | { | |
404 | default: | |
405 | abort (); | |
406 | case N_UNDF | N_EXT: | |
407 | /* If the value is nonzero, then just treat this as a | |
07d6d2b8 AM |
408 | common symbol. I don't know if this is correct in |
409 | all cases, but it is more correct than treating it as | |
410 | a weak undefined symbol. */ | |
252b5132 RH |
411 | if (cache_ptr->symbol.value == 0) |
412 | new_type = N_WEAKU; | |
413 | break; | |
414 | case N_ABS | N_EXT: | |
415 | new_type = N_WEAKA; | |
416 | break; | |
417 | case N_TEXT | N_EXT: | |
418 | new_type = N_WEAKT; | |
419 | break; | |
420 | case N_DATA | N_EXT: | |
421 | new_type = N_WEAKD; | |
422 | break; | |
423 | case N_BSS | N_EXT: | |
424 | new_type = N_WEAKB; | |
425 | break; | |
426 | } | |
427 | } | |
428 | } | |
429 | cache_ptr->type = new_type; | |
430 | ||
431 | } | |
432 | ||
252b5132 RH |
433 | /* |
434 | DESCRIPTION | |
07d6d2b8 AM |
435 | Swaps the information in an executable header taken from a raw |
436 | byte stream memory image, into the internal exec_header | |
437 | structure. | |
252b5132 RH |
438 | */ |
439 | ||
440 | void | |
2c3fc389 NC |
441 | NAME (aout,swap_exec_header_in) (bfd *abfd, |
442 | struct external_exec *raw_bytes, | |
443 | struct internal_exec *execp) | |
252b5132 RH |
444 | { |
445 | struct external_exec *bytes = (struct external_exec *) raw_bytes; | |
446 | ||
447 | /* The internal_exec structure has some fields that are unused in this | |
448 | configuration (IE for i960), so ensure that all such uninitialized | |
449 | fields are zero'd out. There are places where two of these structs | |
450 | are memcmp'd, and thus the contents do matter. */ | |
451 | memset (execp, 0, sizeof (struct internal_exec)); | |
452 | /* Now fill in fields in the execp, from the bytes in the raw data. */ | |
dc810e39 | 453 | execp->a_info = H_GET_32 (abfd, bytes->e_info); |
252b5132 RH |
454 | execp->a_text = GET_WORD (abfd, bytes->e_text); |
455 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
456 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
457 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
458 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
459 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); | |
460 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
461 | ||
462 | /***************************************************************/ | |
463 | /* check the header to see if it was generated by a bfd output */ | |
7dee875e | 464 | /* this is detected rather bizarrely by requiring a bunch of */ |
252b5132 | 465 | /* header fields to be zero and an old unused field (now used) */ |
07d6d2b8 | 466 | /* to be set. */ |
252b5132 RH |
467 | /***************************************************************/ |
468 | do | |
469 | { | |
470 | long syms; | |
471 | struct aout_data_struct *rawptr; | |
dc810e39 AM |
472 | bfd_size_type amt; |
473 | ||
474 | if (H_GET_32 (abfd, bytes->e_passize) != 0) | |
252b5132 | 475 | break; |
dc810e39 | 476 | if (H_GET_32 (abfd, bytes->e_syms) != 0) |
252b5132 | 477 | break; |
dc810e39 | 478 | if (H_GET_32 (abfd, bytes->e_supsize) != 0) |
252b5132 RH |
479 | break; |
480 | ||
dc810e39 | 481 | syms = H_GET_32 (abfd, bytes->e_drelocs); |
252b5132 RH |
482 | if (syms == 0) |
483 | break; | |
484 | ||
485 | /* OK, we've passed the test as best as we can determine */ | |
486 | execp->a_syms = syms; | |
487 | ||
488 | /* allocate storage for where we will store this result */ | |
dc810e39 AM |
489 | amt = sizeof (*rawptr); |
490 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt); | |
252b5132 RH |
491 | |
492 | if (rawptr == NULL) | |
493 | return; | |
494 | abfd->tdata.aout_data = rawptr; | |
495 | obj_aout_subformat (abfd) = gnu_encap_format; | |
496 | } | |
497 | while (0); | |
498 | } | |
499 | ||
252b5132 RH |
500 | /* The hp symbol table is a bit different than other a.out targets. Instead |
501 | of having an array of nlist items and an array of strings, hp's format | |
502 | has them mixed together in one structure. In addition, the strings are | |
503 | not null terminated. It looks something like this: | |
504 | ||
505 | nlist element 1 | |
506 | string1 | |
507 | nlist element 2 | |
508 | string2 | |
509 | ... | |
510 | ||
511 | The whole symbol table is read as one chunk and then we march thru it | |
512 | and convert it to canonical form. As we march thru the table, we copy | |
513 | the nlist data into the internal form and we compact the strings and null | |
514 | terminate them, using storage from the already allocated symbol table: | |
515 | ||
516 | string1 | |
517 | null | |
518 | string2 | |
519 | null | |
520 | ... | |
521 | */ | |
522 | ||
b34976b6 | 523 | bfd_boolean |
2c3fc389 | 524 | MY (slurp_symbol_table) (bfd *abfd) |
252b5132 RH |
525 | { |
526 | bfd_size_type symbol_bytes; | |
527 | struct external_nlist *syms; | |
528 | struct external_nlist *sym_pointer; | |
529 | struct external_nlist *sym_end; | |
530 | char *strings; | |
531 | aout_symbol_type *cached; | |
532 | unsigned num_syms = 0; | |
dc810e39 | 533 | bfd_size_type amt; |
252b5132 RH |
534 | |
535 | /* If there's no work to be done, don't do any */ | |
536 | if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL) | |
b34976b6 | 537 | return TRUE; |
252b5132 RH |
538 | symbol_bytes = exec_hdr (abfd)->a_syms; |
539 | ||
dc810e39 AM |
540 | amt = symbol_bytes + SYM_EXTRA_BYTES; |
541 | strings = (char *) bfd_alloc (abfd, amt); | |
252b5132 | 542 | if (!strings) |
b34976b6 | 543 | return FALSE; |
252b5132 RH |
544 | syms = (struct external_nlist *) (strings + SYM_EXTRA_BYTES); |
545 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
2c3fc389 | 546 | || bfd_bread (syms, symbol_bytes, abfd) != symbol_bytes) |
252b5132 RH |
547 | { |
548 | bfd_release (abfd, syms); | |
b34976b6 | 549 | return FALSE; |
252b5132 RH |
550 | } |
551 | ||
252b5132 RH |
552 | sym_end = (struct external_nlist *) (((char *) syms) + symbol_bytes); |
553 | ||
554 | /* first, march thru the table and figure out how many symbols there are */ | |
555 | for (sym_pointer = syms; sym_pointer < sym_end; sym_pointer++, num_syms++) | |
556 | { | |
557 | /* skip over the embedded symbol. */ | |
558 | sym_pointer = (struct external_nlist *) (((char *) sym_pointer) + | |
559 | sym_pointer->e_length[0]); | |
560 | } | |
561 | ||
562 | /* now that we know the symbol count, update the bfd header */ | |
563 | bfd_get_symcount (abfd) = num_syms; | |
564 | ||
dc810e39 AM |
565 | amt = num_syms; |
566 | amt *= sizeof (aout_symbol_type); | |
567 | cached = (aout_symbol_type *) bfd_zalloc (abfd, amt); | |
568 | if (cached == NULL && num_syms != 0) | |
b34976b6 | 569 | return FALSE; |
252b5132 RH |
570 | |
571 | /* as we march thru the hp symbol table, convert it into a list of | |
572 | null terminated strings to hold the symbol names. Make sure any | |
573 | assignment to the strings pointer is done after we're thru using | |
574 | the nlist so we don't overwrite anything important. */ | |
575 | ||
7dee875e | 576 | /* OK, now walk the new symtable, caching symbol properties */ |
252b5132 RH |
577 | { |
578 | aout_symbol_type *cache_ptr = cached; | |
252b5132 RH |
579 | /* Run through table and copy values */ |
580 | for (sym_pointer = syms, cache_ptr = cached; | |
581 | sym_pointer < sym_end; sym_pointer++, cache_ptr++) | |
582 | { | |
583 | unsigned int length; | |
584 | cache_ptr->symbol.the_bfd = abfd; | |
585 | cache_ptr->symbol.value = GET_SWORD (abfd, sym_pointer->e_value); | |
586 | cache_ptr->desc = bfd_get_16 (abfd, sym_pointer->e_almod); | |
587 | cache_ptr->type = bfd_get_8 (abfd, sym_pointer->e_type); | |
588 | cache_ptr->symbol.udata.p = NULL; | |
589 | length = bfd_get_8 (abfd, sym_pointer->e_length); | |
590 | cache_ptr->other = length; /* other not used, save length here */ | |
591 | ||
252b5132 RH |
592 | convert_sym_type (sym_pointer, cache_ptr, abfd); |
593 | if (!translate_from_native_sym_flags (abfd, cache_ptr)) | |
b34976b6 | 594 | return FALSE; |
252b5132 RH |
595 | |
596 | /********************************************************/ | |
7dee875e | 597 | /* for hpux, the 'length' value indicates the length of */ |
252b5132 RH |
598 | /* the symbol name which follows the nlist entry. */ |
599 | /********************************************************/ | |
600 | if (length) | |
601 | { | |
602 | /**************************************************************/ | |
603 | /* the hp string is not null terminated so we create a new one*/ | |
604 | /* by copying the string to overlap the just vacated nlist */ | |
07d6d2b8 | 605 | /* structure before it in memory. */ |
252b5132 RH |
606 | /**************************************************************/ |
607 | cache_ptr->symbol.name = strings; | |
608 | memcpy (strings, sym_pointer + 1, length); | |
609 | strings[length] = '\0'; | |
610 | strings += length + 1; | |
611 | } | |
612 | else | |
613 | cache_ptr->symbol.name = (char *) NULL; | |
614 | ||
615 | /* skip over the embedded symbol. */ | |
616 | sym_pointer = (struct external_nlist *) (((char *) sym_pointer) + | |
617 | length); | |
618 | } | |
619 | } | |
620 | ||
621 | obj_aout_symbols (abfd) = cached; | |
622 | ||
b34976b6 | 623 | return TRUE; |
252b5132 RH |
624 | } |
625 | ||
252b5132 | 626 | void |
2c3fc389 NC |
627 | MY (swap_std_reloc_in) (bfd *abfd, |
628 | struct hp300hpux_reloc *bytes, | |
629 | arelent *cache_ptr, | |
630 | asymbol **symbols, | |
631 | bfd_size_type symcount ATTRIBUTE_UNUSED) | |
252b5132 RH |
632 | { |
633 | int r_index; | |
634 | int r_extern = 0; | |
635 | unsigned int r_length; | |
636 | int r_pcrel = 0; | |
637 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
638 | ||
dc810e39 AM |
639 | cache_ptr->address = H_GET_32 (abfd, bytes->r_address); |
640 | r_index = H_GET_16 (abfd, bytes->r_index); | |
252b5132 RH |
641 | |
642 | switch (bytes->r_type[0]) | |
643 | { | |
644 | case HP_RSEGMENT_TEXT: | |
645 | r_index = N_TEXT; | |
646 | break; | |
647 | case HP_RSEGMENT_DATA: | |
648 | r_index = N_DATA; | |
649 | break; | |
650 | case HP_RSEGMENT_BSS: | |
651 | r_index = N_BSS; | |
652 | break; | |
653 | case HP_RSEGMENT_EXTERNAL: | |
654 | r_extern = 1; | |
655 | break; | |
656 | case HP_RSEGMENT_PCREL: | |
657 | r_extern = 1; | |
658 | r_pcrel = 1; | |
659 | break; | |
660 | case HP_RSEGMENT_RDLT: | |
661 | break; | |
662 | case HP_RSEGMENT_RPLT: | |
663 | break; | |
664 | case HP_RSEGMENT_NOOP: | |
665 | break; | |
666 | default: | |
667 | abort (); | |
668 | break; | |
669 | } | |
670 | ||
671 | switch (bytes->r_length[0]) | |
672 | { | |
673 | case HP_RLENGTH_BYTE: | |
674 | r_length = 0; | |
675 | break; | |
676 | case HP_RLENGTH_WORD: | |
677 | r_length = 1; | |
678 | break; | |
679 | case HP_RLENGTH_LONG: | |
680 | r_length = 2; | |
681 | break; | |
682 | default: | |
683 | abort (); | |
684 | break; | |
685 | } | |
686 | ||
687 | cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel; | |
688 | /* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */ | |
689 | ||
690 | /* This macro uses the r_index value computed above */ | |
691 | if (r_pcrel && r_extern) | |
692 | { | |
693 | /* The GNU linker assumes any offset from beginning of section */ | |
694 | /* is already incorporated into the image while the HP linker */ | |
07d6d2b8 | 695 | /* adds this in later. Add it in now... */ |
252b5132 RH |
696 | MOVE_ADDRESS (-cache_ptr->address); |
697 | } | |
698 | else | |
699 | { | |
700 | MOVE_ADDRESS (0); | |
701 | } | |
702 | } | |
703 | ||
b34976b6 | 704 | bfd_boolean |
2c3fc389 | 705 | MY (slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols) |
252b5132 | 706 | { |
dc810e39 | 707 | bfd_size_type count; |
252b5132 | 708 | bfd_size_type reloc_size; |
2c3fc389 | 709 | void * relocs; |
252b5132 RH |
710 | arelent *reloc_cache; |
711 | size_t each_size; | |
712 | struct hp300hpux_reloc *rptr; | |
713 | unsigned int counter; | |
714 | arelent *cache_ptr; | |
715 | ||
716 | if (asect->relocation) | |
b34976b6 | 717 | return TRUE; |
252b5132 RH |
718 | |
719 | if (asect->flags & SEC_CONSTRUCTOR) | |
b34976b6 | 720 | return TRUE; |
252b5132 RH |
721 | |
722 | if (asect == obj_datasec (abfd)) | |
723 | { | |
724 | reloc_size = exec_hdr (abfd)->a_drsize; | |
725 | goto doit; | |
726 | } | |
727 | ||
728 | if (asect == obj_textsec (abfd)) | |
729 | { | |
730 | reloc_size = exec_hdr (abfd)->a_trsize; | |
731 | goto doit; | |
732 | } | |
733 | ||
734 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 735 | return FALSE; |
252b5132 RH |
736 | |
737 | doit: | |
738 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) | |
b34976b6 | 739 | return FALSE; |
252b5132 RH |
740 | each_size = obj_reloc_entry_size (abfd); |
741 | ||
742 | count = reloc_size / each_size; | |
743 | ||
dc810e39 | 744 | reloc_cache = (arelent *) bfd_zalloc (abfd, count * sizeof (arelent)); |
252b5132 | 745 | if (!reloc_cache && count != 0) |
b34976b6 | 746 | return FALSE; |
252b5132 | 747 | |
2c3fc389 | 748 | relocs = bfd_alloc (abfd, reloc_size); |
252b5132 RH |
749 | if (!relocs && reloc_size != 0) |
750 | { | |
751 | bfd_release (abfd, reloc_cache); | |
b34976b6 | 752 | return FALSE; |
252b5132 RH |
753 | } |
754 | ||
dc810e39 | 755 | if (bfd_bread (relocs, reloc_size, abfd) != reloc_size) |
252b5132 RH |
756 | { |
757 | bfd_release (abfd, relocs); | |
758 | bfd_release (abfd, reloc_cache); | |
b34976b6 | 759 | return FALSE; |
252b5132 RH |
760 | } |
761 | ||
762 | rptr = (struct hp300hpux_reloc *) relocs; | |
763 | counter = 0; | |
764 | cache_ptr = reloc_cache; | |
765 | ||
766 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
767 | { | |
768 | MY (swap_std_reloc_in) (abfd, rptr, cache_ptr, symbols, | |
dc810e39 | 769 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
770 | } |
771 | ||
252b5132 RH |
772 | bfd_release (abfd, relocs); |
773 | asect->relocation = reloc_cache; | |
774 | asect->reloc_count = count; | |
b34976b6 | 775 | return TRUE; |
252b5132 RH |
776 | } |
777 | ||
252b5132 RH |
778 | /************************************************************************/ |
779 | /* The following functions are identical to functions in aoutx.h except */ | |
780 | /* they refer to MY(func) rather than NAME(aout,func) and they also */ | |
07d6d2b8 | 781 | /* call aout_32 versions if the input file was generated by gcc */ |
252b5132 RH |
782 | /************************************************************************/ |
783 | ||
2c3fc389 NC |
784 | long aout_32_canonicalize_symtab (bfd *, asymbol **); |
785 | long aout_32_get_symtab_upper_bound (bfd *); | |
786 | long aout_32_canonicalize_reloc (bfd *, sec_ptr, arelent **, asymbol **); | |
252b5132 RH |
787 | |
788 | long | |
2c3fc389 | 789 | MY (canonicalize_symtab) (bfd *abfd, asymbol **location) |
252b5132 RH |
790 | { |
791 | unsigned int counter = 0; | |
792 | aout_symbol_type *symbase; | |
793 | ||
794 | if (obj_aout_subformat (abfd) == gnu_encap_format) | |
6cee3f79 | 795 | return aout_32_canonicalize_symtab (abfd, location); |
252b5132 RH |
796 | |
797 | if (!MY (slurp_symbol_table) (abfd)) | |
798 | return -1; | |
799 | ||
800 | for (symbase = obj_aout_symbols (abfd); counter++ < bfd_get_symcount (abfd);) | |
801 | *(location++) = (asymbol *) (symbase++); | |
802 | *location++ = 0; | |
803 | return bfd_get_symcount (abfd); | |
804 | } | |
805 | ||
806 | long | |
2c3fc389 | 807 | MY (get_symtab_upper_bound) (bfd *abfd) |
252b5132 RH |
808 | { |
809 | if (obj_aout_subformat (abfd) == gnu_encap_format) | |
810 | return aout_32_get_symtab_upper_bound (abfd); | |
811 | if (!MY (slurp_symbol_table) (abfd)) | |
812 | return -1; | |
813 | ||
814 | return (bfd_get_symcount (abfd) + 1) * (sizeof (aout_symbol_type *)); | |
815 | } | |
816 | ||
252b5132 | 817 | long |
2c3fc389 NC |
818 | MY (canonicalize_reloc) (bfd *abfd, |
819 | sec_ptr section, | |
820 | arelent **relptr, | |
821 | asymbol **symbols) | |
252b5132 RH |
822 | { |
823 | arelent *tblptr = section->relocation; | |
824 | unsigned int count; | |
2c3fc389 | 825 | |
252b5132 RH |
826 | if (obj_aout_subformat (abfd) == gnu_encap_format) |
827 | return aout_32_canonicalize_reloc (abfd, section, relptr, symbols); | |
828 | ||
829 | if (!(tblptr || MY (slurp_reloc_table) (abfd, section, symbols))) | |
830 | return -1; | |
831 | ||
832 | if (section->flags & SEC_CONSTRUCTOR) | |
833 | { | |
834 | arelent_chain *chain = section->constructor_chain; | |
835 | for (count = 0; count < section->reloc_count; count++) | |
836 | { | |
837 | *relptr++ = &chain->relent; | |
838 | chain = chain->next; | |
839 | } | |
840 | } | |
841 | else | |
842 | { | |
843 | tblptr = section->relocation; | |
844 | ||
845 | for (count = 0; count++ < section->reloc_count;) | |
846 | { | |
847 | *relptr++ = tblptr++; | |
848 | } | |
849 | } | |
850 | *relptr = 0; | |
851 | ||
852 | return section->reloc_count; | |
853 | } | |
854 | ||
252b5132 | 855 | #include "aout-target.h" |