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88dfcd68 SC |
1 | /* BFD semi-generic back-end for a.out binaries |
2 | Copyright (C) 1990-1991 Free Software Foundation, Inc. | |
3 | Written by Cygnus Support. | |
7ed4093a | 4 | |
88dfcd68 | 5 | This file is part of BFD, the Binary File Descriptor library. |
7ed4093a | 6 | |
88dfcd68 | 7 | This program is free software; you can redistribute it and/or modify |
7ed4093a | 8 | it under the terms of the GNU General Public License as published by |
88dfcd68 SC |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
7ed4093a | 11 | |
88dfcd68 | 12 | This program is distributed in the hope that it will be useful, |
7ed4093a SC |
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 | |
88dfcd68 SC |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
7ed4093a | 20 | |
4e41b5aa SC |
21 | /* |
22 | SECTION | |
23 | a.out backends | |
6f715d66 | 24 | |
6f715d66 | 25 | |
4e41b5aa | 26 | DESCRIPTION |
6f715d66 | 27 | |
4e41b5aa SC |
28 | BFD supports a number of different flavours of a.out format, |
29 | though the major differences are only the sizes of the | |
30 | structures on disk, and the shape of the relocation | |
31 | information. | |
6f715d66 | 32 | |
4e41b5aa SC |
33 | The support is split into a basic support file @code{aoutx.h} |
34 | and other files which derive functions from the base. One | |
35 | derivation file is @code{aoutf1.h} (for a.out flavour 1), and | |
36 | adds to the basic a.out functions support for sun3, sun4, 386 | |
37 | and 29k a.out files, to create a target jump vector for a | |
38 | specific target. | |
6f715d66 | 39 | |
4e41b5aa SC |
40 | This information is further split out into more specific files |
41 | for each machine, including @code{sunos.c} for sun3 and sun4, | |
42 | @code{newsos3.c} for the Sony NEWS, and @code{demo64.c} for a | |
43 | demonstration of a 64 bit a.out format. | |
44 | ||
45 | The base file @code{aoutx.h} defines general mechanisms for | |
46 | reading and writing records to and from disk, and various | |
47 | other methods which BFD requires. It is included by | |
48 | @code{aout32.c} and @code{aout64.c} to form the names | |
49 | aout_32_swap_exec_header_in, aout_64_swap_exec_header_in, etc. | |
50 | ||
51 | As an example, this is what goes on to make the back end for a | |
52 | sun4, from aout32.c | |
53 | ||
3f7607af PB |
54 | | #define ARCH_SIZE 32 |
55 | | #include "aoutx.h" | |
4e41b5aa SC |
56 | |
57 | Which exports names: | |
58 | ||
3f7607af PB |
59 | | ... |
60 | | aout_32_canonicalize_reloc | |
61 | | aout_32_find_nearest_line | |
62 | | aout_32_get_lineno | |
63 | | aout_32_get_reloc_upper_bound | |
64 | | ... | |
6f715d66 | 65 | |
4e41b5aa SC |
66 | from sunos.c |
67 | ||
3f7607af PB |
68 | | #define ARCH 32 |
69 | | #define TARGET_NAME "a.out-sunos-big" | |
70 | | #define VECNAME sunos_big_vec | |
71 | | #include "aoutf1.h" | |
4e41b5aa SC |
72 | |
73 | requires all the names from aout32.c, and produces the jump vector | |
6f715d66 | 74 | |
3f7607af | 75 | | sunos_big_vec |
c6705697 | 76 | |
4e41b5aa SC |
77 | The file host-aout.c is a special case. It is for a large set |
78 | of hosts that use ``more or less standard'' a.out files, and | |
79 | for which cross-debugging is not interesting. It uses the | |
80 | standard 32-bit a.out support routines, but determines the | |
81 | file offsets and addresses of the text, data, and BSS | |
82 | sections, the machine architecture and machine type, and the | |
83 | entry point address, in a host-dependent manner. Once these | |
84 | values have been determined, generic code is used to handle | |
85 | the object file. | |
c6705697 | 86 | |
4e41b5aa SC |
87 | When porting it to run on a new system, you must supply: |
88 | ||
3f7607af PB |
89 | | HOST_PAGE_SIZE |
90 | | HOST_SEGMENT_SIZE | |
91 | | HOST_MACHINE_ARCH (optional) | |
92 | | HOST_MACHINE_MACHINE (optional) | |
93 | | HOST_TEXT_START_ADDR | |
94 | | HOST_STACK_END_ADDR | |
c6705697 | 95 | |
3f7607af PB |
96 | in the file <<../include/sys/h-XXX.h>> (for your host). These |
97 | values, plus the structures and macros defined in <<a.out.h>> on | |
4e41b5aa SC |
98 | your host system, will produce a BFD target that will access |
99 | ordinary a.out files on your host. To configure a new machine | |
3f7607af | 100 | to use <<host-aout.c>., specify: |
c6705697 | 101 | |
3f7607af PB |
102 | | TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec |
103 | | TDEPFILES= host-aout.o trad-core.o | |
c6705697 | 104 | |
3f7607af PB |
105 | in the <<config/mt-XXX>> file, and modify configure.in to use the |
106 | <<mt-XXX>> file (by setting "<<bfd_target=XXX>>") when your | |
4e41b5aa | 107 | configuration is selected. |
c6705697 | 108 | |
6f715d66 SC |
109 | */ |
110 | ||
c618de01 SC |
111 | #define KEEPIT flags |
112 | #define KEEPITTYPE int | |
67c060c3 SC |
113 | |
114 | #include "bfd.h" | |
7ed4093a SC |
115 | #include <sysdep.h> |
116 | #include <ansidecl.h> | |
117 | ||
9e2dad8e | 118 | struct external_exec; |
6f715d66 | 119 | #include "libaout.h" |
7ed4093a | 120 | #include "libbfd.h" |
c3eb25fc SC |
121 | #include "aout/aout64.h" |
122 | #include "aout/stab_gnu.h" | |
123 | #include "aout/ar.h" | |
7ed4093a SC |
124 | |
125 | void (*bfd_error_trap)(); | |
126 | ||
4e41b5aa SC |
127 | /* |
128 | SUBSECTION | |
129 | relocations | |
130 | ||
131 | DESCRIPTION | |
132 | The file @code{aoutx.h} caters for both the @emph{standard} | |
133 | and @emph{extended} forms of a.out relocation records. | |
134 | ||
135 | The standard records are characterised by containing only an | |
136 | address, a symbol index and a type field. The extended records | |
137 | (used on 29ks and sparcs) also have a full integer for an | |
138 | addend. | |
7ed4093a | 139 | |
6f715d66 | 140 | */ |
7ed4093a | 141 | #define CTOR_TABLE_RELOC_IDX 2 |
67c060c3 | 142 | |
67c060c3 | 143 | |
7ed4093a SC |
144 | static reloc_howto_type howto_table_ext[] = |
145 | { | |
146 | HOWTO(RELOC_8, 0, 0, 8, false, 0, true, true,0,"8", false, 0,0x000000ff, false), | |
147 | HOWTO(RELOC_16, 0, 1, 16, false, 0, true, true,0,"16", false, 0,0x0000ffff, false), | |
148 | HOWTO(RELOC_32, 0, 2, 32, false, 0, true, true,0,"32", false, 0,0xffffffff, false), | |
149 | HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, false, true,0,"DISP8", false, 0,0x000000ff, false), | |
150 | HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, false, true,0,"DISP16", false, 0,0x0000ffff, false), | |
151 | HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, false, true,0,"DISP32", false, 0,0xffffffff, false), | |
152 | HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, false, true,0,"WDISP30", false, 0,0x3fffffff, false), | |
153 | HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, false, true,0,"WDISP22", false, 0,0x003fffff, false), | |
154 | HOWTO(RELOC_HI22, 10, 2, 22, false, 0, false, true,0,"HI22", false, 0,0x003fffff, false), | |
155 | HOWTO(RELOC_22, 0, 2, 22, false, 0, false, true,0,"22", false, 0,0x003fffff, false), | |
156 | HOWTO(RELOC_13, 0, 2, 13, false, 0, false, true,0,"13", false, 0,0x00001fff, false), | |
157 | HOWTO(RELOC_LO10, 0, 2, 10, false, 0, false, true,0,"LO10", false, 0,0x000003ff, false), | |
158 | HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, false, true,0,"SFA_BASE", false, 0,0xffffffff, false), | |
159 | HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, false, true,0,"SFA_OFF13",false, 0,0xffffffff, false), | |
160 | HOWTO(RELOC_BASE10, 0, 2, 16, false, 0, false, true,0,"BASE10", false, 0,0x0000ffff, false), | |
161 | HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, false, true,0,"BASE13", false, 0,0x00001fff, false), | |
162 | HOWTO(RELOC_BASE22, 0, 2, 0, false, 0, false, true,0,"BASE22", false, 0,0x00000000, false), | |
163 | HOWTO(RELOC_PC10, 0, 2, 10, false, 0, false, true,0,"PC10", false, 0,0x000003ff, false), | |
164 | HOWTO(RELOC_PC22, 0, 2, 22, false, 0, false, true,0,"PC22", false, 0,0x003fffff, false), | |
165 | HOWTO(RELOC_JMP_TBL,0, 2, 32, false, 0, false, true,0,"JMP_TBL", false, 0,0xffffffff, false), | |
166 | HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, false, true,0,"SEGOFF16", false, 0,0x00000000, false), | |
167 | HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, false, true,0,"GLOB_DAT", false, 0,0x00000000, false), | |
168 | HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, false, true,0,"JMP_SLOT", false, 0,0x00000000, false), | |
67c060c3 SC |
169 | HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, false, true,0,"RELATIVE", false, 0,0x00000000, false), |
170 | ||
7ed4093a SC |
171 | }; |
172 | ||
173 | /* Convert standard reloc records to "arelent" format (incl byte swap). */ | |
174 | ||
175 | static reloc_howto_type howto_table_std[] = { | |
176 | /* type rs size bsz pcrel bitpos abs ovrf sf name part_inpl readmask setmask pcdone */ | |
177 | HOWTO( 0, 0, 0, 8, false, 0, true, true,0,"8", true, 0x000000ff,0x000000ff, false), | |
178 | HOWTO( 1, 0, 1, 16, false, 0, true, true,0,"16", true, 0x0000ffff,0x0000ffff, false), | |
179 | HOWTO( 2, 0, 2, 32, false, 0, true, true,0,"32", true, 0xffffffff,0xffffffff, false), | |
180 | HOWTO( 3, 0, 3, 64, false, 0, true, true,0,"64", true, 0xdeaddead,0xdeaddead, false), | |
181 | HOWTO( 4, 0, 0, 8, true, 0, false, true,0,"DISP8", true, 0x000000ff,0x000000ff, false), | |
182 | HOWTO( 5, 0, 1, 16, true, 0, false, true,0,"DISP16", true, 0x0000ffff,0x0000ffff, false), | |
183 | HOWTO( 6, 0, 2, 32, true, 0, false, true,0,"DISP32", true, 0xffffffff,0xffffffff, false), | |
184 | HOWTO( 7, 0, 3, 64, true, 0, false, true,0,"DISP64", true, 0xfeedface,0xfeedface, false), | |
185 | }; | |
186 | ||
187 | ||
188 | bfd_error_vector_type bfd_error_vector; | |
6f715d66 | 189 | |
4e41b5aa SC |
190 | /* |
191 | SUBSECTION | |
192 | Internal Entry Points | |
193 | ||
194 | DESCRIPTION | |
195 | @code{aoutx.h} exports several routines for accessing the | |
196 | contents of an a.out file, which are gathered and exported in | |
197 | turn by various format specific files (eg sunos.c). | |
198 | ||
6f715d66 SC |
199 | */ |
200 | ||
4e41b5aa SC |
201 | /* |
202 | FUNCTION | |
203 | aout_<size>_swap_exec_header_in | |
204 | ||
205 | DESCRIPTION | |
206 | Swaps the information in an executable header taken from a raw | |
207 | byte stream memory image, into the internal exec_header | |
208 | structure. | |
209 | ||
210 | EXAMPLE | |
211 | void aout_<size>_swap_exec_header_in, | |
212 | (bfd *abfd, | |
213 | struct external_exec *raw_bytes, | |
214 | struct internal_exec *execp); | |
6f715d66 SC |
215 | */ |
216 | ||
7ed4093a SC |
217 | void |
218 | DEFUN(NAME(aout,swap_exec_header_in),(abfd, raw_bytes, execp), | |
219 | bfd *abfd AND | |
220 | struct external_exec *raw_bytes AND | |
221 | struct internal_exec *execp) | |
222 | { | |
223 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
224 | ||
225 | /* Now fill in fields in the execp, from the bytes in the raw data. */ | |
226 | execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); | |
227 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
228 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
229 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
230 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
231 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
232 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); | |
233 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
234 | } | |
235 | ||
4e41b5aa SC |
236 | /* |
237 | FUNCTION | |
238 | aout_<size>_swap_exec_header_out | |
239 | ||
240 | DESCRIPTION | |
241 | Swaps the information in an internal exec header structure | |
242 | into the supplied buffer ready for writing to disk. | |
243 | ||
244 | EXAMPLE | |
245 | void aout_<size>_swap_exec_header_out | |
6f715d66 SC |
246 | (bfd *abfd, |
247 | struct internal_exec *execp, | |
4e41b5aa | 248 | struct external_exec *raw_bytes); |
6f715d66 | 249 | */ |
7ed4093a SC |
250 | void |
251 | DEFUN(NAME(aout,swap_exec_header_out),(abfd, execp, raw_bytes), | |
252 | bfd *abfd AND | |
253 | struct internal_exec *execp AND | |
254 | struct external_exec *raw_bytes) | |
255 | { | |
256 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
257 | ||
258 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ | |
259 | bfd_h_put_32 (abfd, execp->a_info , bytes->e_info); | |
260 | PUT_WORD (abfd, execp->a_text , bytes->e_text); | |
261 | PUT_WORD (abfd, execp->a_data , bytes->e_data); | |
262 | PUT_WORD (abfd, execp->a_bss , bytes->e_bss); | |
263 | PUT_WORD (abfd, execp->a_syms , bytes->e_syms); | |
264 | PUT_WORD (abfd, execp->a_entry , bytes->e_entry); | |
265 | PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); | |
266 | PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); | |
267 | } | |
268 | ||
269 | struct container { | |
270 | struct aoutdata a; | |
271 | struct internal_exec e; | |
272 | }; | |
273 | ||
6f715d66 | 274 | |
4e41b5aa SC |
275 | /* |
276 | FUNCTION | |
277 | aout_<size>_some_aout_object_p | |
6f715d66 | 278 | |
4e41b5aa SC |
279 | DESCRIPTION |
280 | Some A.OUT variant thinks that the file whose format we're | |
281 | checking is an a.out file. Do some more checking, and set up | |
282 | for access if it really is. Call back to the calling | |
283 | environments "finish up" function just before returning, to | |
284 | handle any last-minute setup. | |
6f715d66 | 285 | |
4e41b5aa SC |
286 | EXAMPLE |
287 | bfd_target *aout_<size>_some_aout_object_p | |
6f715d66 | 288 | (bfd *abfd, |
4e41b5aa | 289 | bfd_target *(*callback_to_real_object_p)()); |
6f715d66 | 290 | */ |
7ed4093a SC |
291 | |
292 | bfd_target * | |
7b02b4ed | 293 | DEFUN(NAME(aout,some_aout_object_p),(abfd, execp, callback_to_real_object_p), |
7ed4093a | 294 | bfd *abfd AND |
7b02b4ed | 295 | struct internal_exec *execp AND |
7ed4093a SC |
296 | bfd_target *(*callback_to_real_object_p) ()) |
297 | { | |
7ed4093a | 298 | struct container *rawptr; |
e6e265ce | 299 | bfd_target *result; |
7ed4093a | 300 | |
7ed4093a | 301 | rawptr = (struct container *) bfd_zalloc (abfd, sizeof (struct container)); |
7ed4093a SC |
302 | if (rawptr == NULL) { |
303 | bfd_error = no_memory; | |
304 | return 0; | |
305 | } | |
306 | ||
7b02b4ed JG |
307 | set_tdata (abfd, &rawptr->a); |
308 | exec_hdr (abfd) = &rawptr->e; | |
309 | *exec_hdr (abfd) = *execp; /* Copy in the internal_exec struct */ | |
310 | execp = exec_hdr (abfd); /* Switch to using the newly malloc'd one */ | |
7ed4093a SC |
311 | |
312 | /* Set the file flags */ | |
313 | abfd->flags = NO_FLAGS; | |
314 | if (execp->a_drsize || execp->a_trsize) | |
315 | abfd->flags |= HAS_RELOC; | |
e6e265ce | 316 | /* Setting of EXEC_P has been deferred to the bottom of this function */ |
7ed4093a SC |
317 | if (execp->a_syms) |
318 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
319 | ||
320 | if (N_MAGIC (*execp) == ZMAGIC) abfd->flags |= D_PAGED; | |
321 | if (N_MAGIC (*execp) == NMAGIC) abfd->flags |= WP_TEXT; | |
322 | ||
323 | bfd_get_start_address (abfd) = execp->a_entry; | |
324 | ||
325 | obj_aout_symbols (abfd) = (aout_symbol_type *)NULL; | |
326 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); | |
327 | ||
7ed4093a SC |
328 | /* The default relocation entry size is that of traditional V7 Unix. */ |
329 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
330 | ||
7b02b4ed JG |
331 | /* The default symbol entry size is that of traditional Unix. */ |
332 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; | |
333 | ||
7ed4093a SC |
334 | /* create the sections. This is raunchy, but bfd_close wants to reclaim |
335 | them */ | |
336 | obj_textsec (abfd) = (asection *)NULL; | |
337 | obj_datasec (abfd) = (asection *)NULL; | |
338 | obj_bsssec (abfd) = (asection *)NULL; | |
339 | (void)bfd_make_section(abfd, ".text"); | |
340 | (void)bfd_make_section(abfd, ".data"); | |
341 | (void)bfd_make_section(abfd, ".bss"); | |
342 | ||
343 | abfd->sections = obj_textsec (abfd); | |
344 | obj_textsec (abfd)->next = obj_datasec (abfd); | |
345 | obj_datasec (abfd)->next = obj_bsssec (abfd); | |
346 | ||
347 | obj_datasec (abfd)->size = execp->a_data; | |
348 | obj_bsssec (abfd)->size = execp->a_bss; | |
7ed4093a | 349 | |
7ed4093a | 350 | obj_textsec (abfd)->flags = (execp->a_trsize != 0 ? |
7b02b4ed JG |
351 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_HAS_CONTENTS) : |
352 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)); | |
7ed4093a | 353 | obj_datasec (abfd)->flags = (execp->a_drsize != 0 ? |
7b02b4ed JG |
354 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_HAS_CONTENTS) : |
355 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)); | |
7ed4093a SC |
356 | obj_bsssec (abfd)->flags = SEC_ALLOC; |
357 | ||
358 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
98d43107 JG |
359 | /* The common code can't fill in these things because they depend |
360 | on either the start address of the text segment, the rounding | |
361 | up of virtual addersses between segments, or the starting file | |
362 | position of the text segment -- all of which varies among different | |
363 | versions of a.out. */ | |
364 | ||
7ed4093a SC |
365 | /* Call back to the format-dependent code to fill in the rest of the |
366 | fields and do any further cleanup. Things that should be filled | |
367 | in by the callback: */ | |
368 | ||
369 | struct exec *execp = exec_hdr (abfd); | |
370 | ||
98d43107 JG |
371 | obj_textsec (abfd)->size = N_TXTSIZE(*execp); |
372 | /* data and bss are already filled in since they're so standard */ | |
373 | ||
7ed4093a | 374 | /* The virtual memory addresses of the sections */ |
7ed4093a | 375 | obj_textsec (abfd)->vma = N_TXTADDR(*execp); |
98d43107 JG |
376 | obj_datasec (abfd)->vma = N_DATADDR(*execp); |
377 | obj_bsssec (abfd)->vma = N_BSSADDR(*execp); | |
7ed4093a SC |
378 | |
379 | /* The file offsets of the sections */ | |
380 | obj_textsec (abfd)->filepos = N_TXTOFF(*execp); | |
381 | obj_datasec (abfd)->filepos = N_DATOFF(*execp); | |
382 | ||
383 | /* The file offsets of the relocation info */ | |
384 | obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); | |
385 | obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); | |
386 | ||
387 | /* The file offsets of the string table and symbol table. */ | |
388 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
389 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
390 | ||
7ed4093a SC |
391 | /* Determine the architecture and machine type of the object file. */ |
392 | switch (N_MACHTYPE (*exec_hdr (abfd))) { | |
393 | default: | |
394 | abfd->obj_arch = bfd_arch_obscure; | |
395 | break; | |
396 | } | |
397 | ||
398 | /* Determine the size of a relocation entry */ | |
399 | switch (abfd->obj_arch) { | |
400 | case bfd_arch_sparc: | |
401 | case bfd_arch_a29k: | |
402 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; | |
403 | default: | |
404 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
405 | } | |
406 | ||
7b02b4ed JG |
407 | adata(abfd)->page_size = PAGE_SIZE; |
408 | adata(abfd)->segment_size = SEGMENT_SIZE; | |
409 | adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
410 | ||
7ed4093a SC |
411 | return abfd->xvec; |
412 | ||
413 | /* The architecture is encoded in various ways in various a.out variants, | |
414 | or is not encoded at all in some of them. The relocation size depends | |
415 | on the architecture and the a.out variant. Finally, the return value | |
416 | is the bfd_target vector in use. If an error occurs, return zero and | |
417 | set bfd_error to the appropriate error code. | |
418 | ||
419 | Formats such as b.out, which have additional fields in the a.out | |
420 | header, should cope with them in this callback as well. */ | |
421 | #endif /* DOCUMENTATION */ | |
422 | ||
e6e265ce JG |
423 | result = (*callback_to_real_object_p)(abfd); |
424 | ||
425 | /* Now that the segment addresses have been worked out, take a better | |
426 | guess at whether the file is executable. If the entry point | |
427 | is within the text segment, assume it is. (This makes files | |
428 | executable even if their entry point address is 0, as long as | |
429 | their text starts at zero.) | |
430 | ||
431 | At some point we should probably break down and stat the file and | |
432 | declare it executable if (one of) its 'x' bits are on... */ | |
433 | if ((execp->a_entry >= obj_textsec(abfd)->vma) && | |
434 | (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->size)) | |
435 | abfd->flags |= EXEC_P; | |
436 | return result; | |
7ed4093a SC |
437 | } |
438 | ||
4e41b5aa SC |
439 | /* |
440 | FUNCTION | |
441 | aout_<size>_mkobject | |
6f715d66 | 442 | |
4e41b5aa SC |
443 | DESCRIPTION |
444 | This routine initializes a BFD for use with a.out files. | |
6f715d66 | 445 | |
4e41b5aa SC |
446 | EXAMPLE |
447 | boolean aout_<size>_mkobject, (bfd *); | |
6f715d66 | 448 | */ |
7ed4093a SC |
449 | |
450 | boolean | |
451 | DEFUN(NAME(aout,mkobject),(abfd), | |
452 | bfd *abfd) | |
453 | { | |
454 | struct container *rawptr; | |
455 | ||
456 | bfd_error = system_call_error; | |
457 | ||
458 | /* Use an intermediate variable for clarity */ | |
459 | rawptr = (struct container *)bfd_zalloc (abfd, sizeof (struct container)); | |
460 | ||
461 | if (rawptr == NULL) { | |
462 | bfd_error = no_memory; | |
463 | return false; | |
464 | } | |
465 | ||
466 | set_tdata (abfd, rawptr); | |
467 | exec_hdr (abfd) = &(rawptr->e); | |
468 | ||
469 | /* For simplicity's sake we just make all the sections right here. */ | |
470 | ||
471 | obj_textsec (abfd) = (asection *)NULL; | |
472 | obj_datasec (abfd) = (asection *)NULL; | |
473 | obj_bsssec (abfd) = (asection *)NULL; | |
474 | bfd_make_section (abfd, ".text"); | |
475 | bfd_make_section (abfd, ".data"); | |
476 | bfd_make_section (abfd, ".bss"); | |
477 | ||
478 | return true; | |
479 | } | |
480 | ||
6f715d66 | 481 | |
4e41b5aa SC |
482 | /* |
483 | FUNCTION | |
484 | aout_<size>_machine_type | |
6f715d66 | 485 | |
4e41b5aa SC |
486 | DESCRIPTION |
487 | Keep track of machine architecture and machine type for | |
488 | a.out's. Return the machine_type for a particular | |
489 | arch&machine, or M_UNKNOWN if that exact arch&machine can't be | |
490 | represented in a.out format. | |
7ed4093a | 491 | |
4e41b5aa SC |
492 | If the architecture is understood, machine type 0 (default) |
493 | should always be understood. | |
6f715d66 | 494 | |
4e41b5aa SC |
495 | EXAMPLE |
496 | enum machine_type aout_<size>_machine_type | |
6f715d66 SC |
497 | (enum bfd_architecture arch, |
498 | unsigned long machine)); | |
499 | */ | |
7ed4093a SC |
500 | |
501 | enum machine_type | |
502 | DEFUN(NAME(aout,machine_type),(arch, machine), | |
503 | enum bfd_architecture arch AND | |
504 | unsigned long machine) | |
505 | { | |
506 | enum machine_type arch_flags; | |
507 | ||
508 | arch_flags = M_UNKNOWN; | |
509 | ||
510 | switch (arch) { | |
511 | case bfd_arch_sparc: | |
512 | if (machine == 0) arch_flags = M_SPARC; | |
513 | break; | |
514 | ||
515 | case bfd_arch_m68k: | |
516 | switch (machine) { | |
517 | case 0: arch_flags = M_68010; break; | |
518 | case 68000: arch_flags = M_UNKNOWN; break; | |
519 | case 68010: arch_flags = M_68010; break; | |
520 | case 68020: arch_flags = M_68020; break; | |
521 | default: arch_flags = M_UNKNOWN; break; | |
522 | } | |
523 | break; | |
524 | ||
525 | case bfd_arch_i386: | |
526 | if (machine == 0) arch_flags = M_386; | |
527 | break; | |
528 | ||
529 | case bfd_arch_a29k: | |
530 | if (machine == 0) arch_flags = M_29K; | |
531 | break; | |
532 | ||
533 | default: | |
534 | arch_flags = M_UNKNOWN; | |
535 | break; | |
536 | } | |
537 | return arch_flags; | |
538 | } | |
539 | ||
9e2dad8e | 540 | |
4e41b5aa SC |
541 | /* |
542 | FUNCTION | |
543 | aout_<size>_set_arch_mach | |
6f715d66 | 544 | |
4e41b5aa SC |
545 | DESCRIPTION |
546 | Sets the architecture and the machine of the BFD to those | |
547 | values supplied. Verifies that the format can support the | |
548 | architecture required. | |
6f715d66 | 549 | |
4e41b5aa SC |
550 | EXAMPLE |
551 | boolean aout_<size>_set_arch_mach, | |
6f715d66 SC |
552 | (bfd *, |
553 | enum bfd_architecture, | |
554 | unsigned long machine)); | |
555 | */ | |
556 | ||
7ed4093a SC |
557 | boolean |
558 | DEFUN(NAME(aout,set_arch_mach),(abfd, arch, machine), | |
559 | bfd *abfd AND | |
560 | enum bfd_architecture arch AND | |
561 | unsigned long machine) | |
562 | { | |
9e2dad8e | 563 | bfd_default_set_arch_mach(abfd, arch, machine); |
7ed4093a SC |
564 | if (arch != bfd_arch_unknown && |
565 | NAME(aout,machine_type) (arch, machine) == M_UNKNOWN) | |
566 | return false; /* We can't represent this type */ | |
567 | return true; /* We're easy ... */ | |
568 | } | |
7ed4093a | 569 | |
4e41b5aa SC |
570 | /* |
571 | FUNCTION | |
572 | aout_<size>new_section_hook | |
9e2dad8e | 573 | |
4e41b5aa SC |
574 | DESCRIPTION |
575 | Called by the BFD in response to a @code{bfd_make_section} | |
576 | request. | |
577 | ||
578 | EXAMPLE | |
579 | boolean aout_<size>_new_section_hook, | |
9e2dad8e JG |
580 | (bfd *abfd, |
581 | asection *newsect)); | |
6f715d66 | 582 | */ |
7ed4093a | 583 | boolean |
3f7607af | 584 | DEFUN(NAME(aout,new_section_hook),(abfd, newsect), |
9e2dad8e JG |
585 | bfd *abfd AND |
586 | asection *newsect) | |
7ed4093a | 587 | { |
3f7607af PB |
588 | /* align to double at least */ |
589 | newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; | |
590 | ||
7ed4093a | 591 | |
3f7607af PB |
592 | if (bfd_get_format (abfd) == bfd_object) |
593 | { | |
594 | if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) { | |
595 | obj_textsec(abfd)= newsect; | |
596 | return true; | |
597 | } | |
7ed4093a | 598 | |
3f7607af PB |
599 | if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) { |
600 | obj_datasec(abfd) = newsect; | |
601 | return true; | |
602 | } | |
7ed4093a | 603 | |
3f7607af PB |
604 | if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) { |
605 | obj_bsssec(abfd) = newsect; | |
606 | return true; | |
607 | } | |
7ed4093a | 608 | } |
7ed4093a | 609 | |
3f7607af PB |
610 | /* We allow more than three sections internally */ |
611 | return true; | |
7ed4093a SC |
612 | } |
613 | ||
614 | boolean | |
9e2dad8e JG |
615 | DEFUN(NAME(aout,set_section_contents),(abfd, section, location, offset, count), |
616 | bfd *abfd AND | |
617 | sec_ptr section AND | |
618 | PTR location AND | |
619 | file_ptr offset AND | |
620 | bfd_size_type count) | |
7ed4093a | 621 | { |
7b02b4ed | 622 | file_ptr text_end; |
7b02b4ed | 623 | bfd_size_type text_size; |
7ed4093a | 624 | if (abfd->output_has_begun == false) |
9e2dad8e JG |
625 | { /* set by bfd.c handler */ |
626 | switch (abfd->direction) | |
627 | { | |
628 | case read_direction: | |
629 | case no_direction: | |
630 | bfd_error = invalid_operation; | |
631 | return false; | |
632 | ||
633 | case both_direction: | |
634 | break; | |
635 | ||
636 | case write_direction: | |
637 | if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL)) | |
638 | { | |
639 | bfd_error = invalid_operation; | |
640 | return false; | |
641 | } | |
7b02b4ed JG |
642 | obj_textsec(abfd)->size = |
643 | align_power(obj_textsec(abfd)->size, | |
644 | obj_textsec(abfd)->alignment_power); | |
645 | text_size = obj_textsec (abfd)->size; | |
646 | /* Rule (heuristic) for when to pad to a new page. | |
647 | * Note that there are (at least) two ways demand-paged | |
648 | * (ZMAGIC) files have been handled. Most Berkeley-based systems | |
649 | * start the text segment at (PAGE_SIZE). However, newer | |
650 | * versions of SUNOS start the text segment right after the | |
651 | * exec header; the latter is counted in the text segment size, | |
652 | * and is paged in by the kernel with the rest of the text. */ | |
653 | if (!(abfd->flags & D_PAGED)) | |
654 | { /* Not demand-paged. */ | |
655 | obj_textsec(abfd)->filepos = adata(abfd)->exec_bytes_size; | |
656 | } | |
657 | else if (obj_textsec(abfd)->vma % adata(abfd)->page_size | |
658 | < adata(abfd)->exec_bytes_size) | |
659 | { /* Old-style demand-paged. */ | |
660 | obj_textsec(abfd)->filepos = adata(abfd)->page_size; | |
661 | } | |
662 | else | |
663 | { /* Sunos-style demand-paged. */ | |
664 | obj_textsec(abfd)->filepos = adata(abfd)->exec_bytes_size; | |
665 | text_size += adata(abfd)->exec_bytes_size; | |
666 | } | |
667 | text_end = obj_textsec(abfd)->size + obj_textsec(abfd)->filepos; | |
668 | if (abfd->flags & (D_PAGED|WP_TEXT)) | |
669 | { | |
670 | bfd_size_type text_pad = | |
8c4a1ace JG |
671 | BFD_ALIGN(text_size, adata(abfd)->segment_size) |
672 | - text_size; | |
7b02b4ed JG |
673 | text_end += text_pad; |
674 | obj_textsec(abfd)->size += text_pad; | |
12e7087f | 675 | } |
7b02b4ed JG |
676 | obj_datasec(abfd)->filepos = text_end; |
677 | obj_datasec(abfd)->size = | |
678 | align_power(obj_datasec(abfd)->size, | |
679 | obj_datasec(abfd)->alignment_power); | |
12e7087f | 680 | } |
9e2dad8e | 681 | } |
12e7087f | 682 | |
7ed4093a SC |
683 | /* regardless, once we know what we're doing, we might as well get going */ |
684 | if (section != obj_bsssec(abfd)) | |
685 | { | |
686 | bfd_seek (abfd, section->filepos + offset, SEEK_SET); | |
9e2dad8e | 687 | |
7ed4093a SC |
688 | if (count) { |
689 | return (bfd_write ((PTR)location, 1, count, abfd) == count) ? | |
690 | true : false; | |
691 | } | |
692 | return false; | |
693 | } | |
694 | return true; | |
695 | } | |
696 | \f | |
697 | /* Classify stabs symbols */ | |
698 | ||
699 | #define sym_in_text_section(sym) \ | |
9e2dad8e | 700 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_TEXT) |
7ed4093a SC |
701 | |
702 | #define sym_in_data_section(sym) \ | |
9e2dad8e | 703 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_DATA) |
7ed4093a SC |
704 | |
705 | #define sym_in_bss_section(sym) \ | |
9e2dad8e | 706 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_BSS) |
7ed4093a SC |
707 | |
708 | /* Symbol is undefined if type is N_UNDF|N_EXT and if it has | |
9e2dad8e JG |
709 | zero in the "value" field. Nonzeroes there are fortrancommon |
710 | symbols. */ | |
7ed4093a | 711 | #define sym_is_undefined(sym) \ |
9e2dad8e | 712 | ((sym)->type == (N_UNDF | N_EXT) && (sym)->symbol.value == 0) |
7ed4093a SC |
713 | |
714 | /* Symbol is a global definition if N_EXT is on and if it has | |
9e2dad8e | 715 | a nonzero type field. */ |
7ed4093a | 716 | #define sym_is_global_defn(sym) \ |
9e2dad8e | 717 | (((sym)->type & N_EXT) && (sym)->type & N_TYPE) |
7ed4093a SC |
718 | |
719 | /* Symbol is debugger info if any bits outside N_TYPE or N_EXT | |
9e2dad8e | 720 | are on. */ |
7ed4093a | 721 | #define sym_is_debugger_info(sym) \ |
9e2dad8e | 722 | ((sym)->type & ~(N_EXT | N_TYPE)) |
7ed4093a SC |
723 | |
724 | #define sym_is_fortrancommon(sym) \ | |
9e2dad8e | 725 | (((sym)->type == (N_EXT)) && (sym)->symbol.value != 0) |
7ed4093a SC |
726 | |
727 | /* Symbol is absolute if it has N_ABS set */ | |
728 | #define sym_is_absolute(sym) \ | |
9e2dad8e | 729 | (((sym)->type & N_TYPE)== N_ABS) |
7ed4093a SC |
730 | |
731 | ||
732 | #define sym_is_indirect(sym) \ | |
9e2dad8e | 733 | (((sym)->type & N_ABS)== N_ABS) |
7ed4093a SC |
734 | |
735 | /* Only in their own functions for ease of debugging; when sym flags have | |
9e2dad8e JG |
736 | stabilised these should be inlined into their (single) caller */ |
737 | ||
7ed4093a SC |
738 | static void |
739 | DEFUN(translate_from_native_sym_flags,(sym_pointer, cache_ptr, abfd), | |
4e41b5aa SC |
740 | struct external_nlist *sym_pointer AND |
741 | aout_symbol_type *cache_ptr AND | |
742 | bfd *abfd) | |
9e2dad8e JG |
743 | { |
744 | switch (cache_ptr->type & N_TYPE) { | |
745 | case N_SETA: | |
746 | case N_SETT: | |
747 | case N_SETD: | |
748 | case N_SETB: | |
749 | { | |
750 | char *copy = bfd_alloc(abfd, strlen(cache_ptr->symbol.name)+1); | |
751 | asection *section ; | |
752 | arelent_chain *reloc = (arelent_chain *)bfd_alloc(abfd, sizeof(arelent_chain)); | |
753 | strcpy(copy, cache_ptr->symbol.name); | |
cbdc7909 JG |
754 | section = bfd_get_section_by_name (abfd, copy); |
755 | if (!section) | |
756 | section = bfd_make_section(abfd,copy); | |
757 | ||
9e2dad8e JG |
758 | switch ( (cache_ptr->type & N_TYPE) ) { |
759 | case N_SETA: | |
760 | section->flags = SEC_CONSTRUCTOR; | |
761 | reloc->relent.section = (asection *)NULL; | |
762 | cache_ptr->symbol.section = (asection *)NULL; | |
763 | break; | |
764 | case N_SETT: | |
765 | section->flags = SEC_CONSTRUCTOR_TEXT; | |
766 | reloc->relent.section = (asection *)obj_textsec(abfd); | |
767 | cache_ptr->symbol.value -= reloc->relent.section->vma; | |
768 | break; | |
769 | case N_SETD: | |
770 | section->flags = SEC_CONSTRUCTOR_DATA; | |
771 | reloc->relent.section = (asection *)obj_datasec(abfd); | |
772 | cache_ptr->symbol.value -= reloc->relent.section->vma; | |
773 | break; | |
774 | case N_SETB: | |
775 | section->flags = SEC_CONSTRUCTOR_BSS; | |
776 | reloc->relent.section = (asection *)obj_bsssec(abfd); | |
777 | cache_ptr->symbol.value -= reloc->relent.section->vma; | |
778 | break; | |
779 | } | |
780 | cache_ptr->symbol.section = reloc->relent.section; | |
781 | reloc->relent.addend = cache_ptr->symbol.value ; | |
7ed4093a | 782 | |
9e2dad8e JG |
783 | /* We modify the symbol to belong to a section depending upon the |
784 | name of the symbol - probably __CTOR__ or __DTOR__ but we don't | |
785 | really care, and add to the size of the section to contain a | |
786 | pointer to the symbol. Build a reloc entry to relocate to this | |
787 | symbol attached to this section. */ | |
c618de01 SC |
788 | |
789 | ||
9e2dad8e JG |
790 | section->reloc_count++; |
791 | section->alignment_power = 2; | |
792 | reloc->relent.sym_ptr_ptr = (asymbol **)NULL; | |
793 | reloc->next = section->constructor_chain; | |
794 | section->constructor_chain = reloc; | |
795 | reloc->relent.address = section->size; | |
796 | section->size += sizeof(int *); | |
c618de01 | 797 | |
9e2dad8e JG |
798 | reloc->relent.howto = howto_table_ext +CTOR_TABLE_RELOC_IDX; |
799 | cache_ptr->symbol.flags |= BSF_DEBUGGING | BSF_CONSTRUCTOR; | |
800 | } | |
801 | break; | |
7ed4093a | 802 | default: |
88dfcd68 SC |
803 | if (cache_ptr->type == N_WARNING) |
804 | { | |
9e2dad8e JG |
805 | /* This symbol is the text of a warning message, the next symbol |
806 | is the symbol to associate the warning with */ | |
807 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
808 | cache_ptr->symbol.value = (bfd_vma)((cache_ptr+1)); | |
809 | /* We furgle with the next symbol in place. We don't want it to be undefined, we'll trample the type */ | |
810 | (sym_pointer+1)->e_type[0] = 0xff; | |
811 | break; | |
812 | } | |
c618de01 | 813 | if ((cache_ptr->type | N_EXT) == (N_INDR | N_EXT)) { |
88dfcd68 SC |
814 | /* Two symbols in a row for an INDR message. The first symbol |
815 | contains the name we will match, the second symbol contains the | |
816 | name the first name is translated into. It is supplied to us | |
817 | undefined. This is good, since we want to pull in any files which | |
818 | define it */ | |
819 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT; | |
820 | cache_ptr->symbol.value = (bfd_vma)((cache_ptr+1)); | |
821 | break; | |
822 | } | |
823 | ||
824 | ||
7ed4093a SC |
825 | if (sym_is_debugger_info (cache_ptr)) { |
826 | cache_ptr->symbol.flags = BSF_DEBUGGING ; | |
827 | /* Work out the section correct for this symbol */ | |
828 | switch (cache_ptr->type & N_TYPE) | |
829 | { | |
830 | case N_TEXT: | |
831 | case N_FN: | |
832 | cache_ptr->symbol.section = obj_textsec (abfd); | |
833 | cache_ptr->symbol.value -= obj_textsec(abfd)->vma; | |
834 | break; | |
835 | case N_DATA: | |
836 | cache_ptr->symbol.value -= obj_datasec(abfd)->vma; | |
837 | cache_ptr->symbol.section = obj_datasec (abfd); | |
838 | break; | |
839 | case N_BSS : | |
840 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
841 | cache_ptr->symbol.value -= obj_bsssec(abfd)->vma; | |
842 | break; | |
843 | case N_ABS: | |
844 | default: | |
845 | cache_ptr->symbol.section = 0; | |
846 | break; | |
847 | } | |
848 | } | |
849 | else { | |
88dfcd68 | 850 | |
7ed4093a SC |
851 | if (sym_is_fortrancommon (cache_ptr)) |
852 | { | |
853 | cache_ptr->symbol.flags = BSF_FORT_COMM; | |
854 | cache_ptr->symbol.section = (asection *)NULL; | |
855 | } | |
856 | else { | |
857 | if (sym_is_undefined (cache_ptr)) { | |
858 | cache_ptr->symbol.flags = BSF_UNDEFINED; | |
859 | } | |
860 | else if (sym_is_global_defn (cache_ptr)) { | |
861 | cache_ptr->symbol.flags = BSF_GLOBAL | BSF_EXPORT; | |
862 | } | |
88dfcd68 | 863 | |
7ed4093a SC |
864 | else if (sym_is_absolute (cache_ptr)) { |
865 | cache_ptr->symbol.flags = BSF_ABSOLUTE; | |
866 | } | |
867 | else { | |
868 | cache_ptr->symbol.flags = BSF_LOCAL; | |
869 | } | |
88dfcd68 | 870 | |
7ed4093a SC |
871 | /* In a.out, the value of a symbol is always relative to the |
872 | * start of the file, if this is a data symbol we'll subtract | |
873 | * the size of the text section to get the section relative | |
874 | * value. If this is a bss symbol (which would be strange) | |
875 | * we'll subtract the size of the previous two sections | |
876 | * to find the section relative address. | |
877 | */ | |
88dfcd68 | 878 | |
7ed4093a SC |
879 | if (sym_in_text_section (cache_ptr)) { |
880 | cache_ptr->symbol.value -= obj_textsec(abfd)->vma; | |
881 | cache_ptr->symbol.section = obj_textsec (abfd); | |
882 | } | |
883 | else if (sym_in_data_section (cache_ptr)){ | |
884 | cache_ptr->symbol.value -= obj_datasec(abfd)->vma; | |
885 | cache_ptr->symbol.section = obj_datasec (abfd); | |
886 | } | |
887 | else if (sym_in_bss_section(cache_ptr)) { | |
888 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
889 | cache_ptr->symbol.value -= obj_bsssec(abfd)->vma; | |
890 | } | |
891 | else { | |
892 | cache_ptr->symbol.section = (asection *)NULL; | |
893 | cache_ptr->symbol.flags |= BSF_ABSOLUTE; | |
894 | } | |
895 | } | |
896 | } | |
897 | } | |
898 | } | |
899 | ||
900 | static void | |
901 | DEFUN(translate_to_native_sym_flags,(sym_pointer, cache_ptr, abfd), | |
902 | struct external_nlist *sym_pointer AND | |
903 | asymbol *cache_ptr AND | |
904 | bfd *abfd) | |
905 | { | |
906 | bfd_vma value = cache_ptr->value; | |
907 | ||
908 | if (bfd_get_section(cache_ptr)) { | |
909 | if (bfd_get_output_section(cache_ptr) == obj_bsssec (abfd)) { | |
910 | sym_pointer->e_type[0] |= N_BSS; | |
911 | } | |
912 | else if (bfd_get_output_section(cache_ptr) == obj_datasec (abfd)) { | |
913 | sym_pointer->e_type[0] |= N_DATA; | |
914 | } | |
915 | else if (bfd_get_output_section(cache_ptr) == obj_textsec (abfd)) { | |
916 | sym_pointer->e_type[0] |= N_TEXT; | |
917 | } | |
918 | else { | |
919 | bfd_error_vector.nonrepresentable_section(abfd, | |
920 | bfd_get_output_section(cache_ptr)->name); | |
921 | } | |
922 | /* Turn the symbol from section relative to absolute again */ | |
923 | ||
924 | value += | |
925 | cache_ptr->section->output_section->vma | |
926 | + cache_ptr->section->output_offset ; | |
927 | } | |
928 | else { | |
929 | sym_pointer->e_type[0] |= N_ABS; | |
930 | } | |
88dfcd68 SC |
931 | if (cache_ptr->flags & (BSF_WARNING)) { |
932 | (sym_pointer+1)->e_type[0] = 1; | |
933 | } | |
7ed4093a SC |
934 | if (cache_ptr->flags & (BSF_FORT_COMM | BSF_UNDEFINED)) { |
935 | sym_pointer->e_type[0] = (N_UNDF | N_EXT); | |
936 | } | |
937 | else { | |
938 | if (cache_ptr->flags & BSF_ABSOLUTE) { | |
939 | sym_pointer->e_type[0] |= N_ABS; | |
940 | } | |
941 | ||
942 | if (cache_ptr->flags & (BSF_GLOBAL | BSF_EXPORT)) { | |
943 | sym_pointer->e_type[0] |= N_EXT; | |
944 | } | |
945 | if (cache_ptr->flags & BSF_DEBUGGING) { | |
946 | sym_pointer->e_type [0]= ((aout_symbol_type *)cache_ptr)->type; | |
947 | } | |
948 | } | |
949 | PUT_WORD(abfd, value, sym_pointer->e_value); | |
950 | } | |
951 | \f | |
952 | /* Native-level interface to symbols. */ | |
953 | ||
954 | /* We read the symbols into a buffer, which is discarded when this | |
955 | function exits. We read the strings into a buffer large enough to | |
956 | hold them all plus all the cached symbol entries. */ | |
957 | ||
958 | asymbol * | |
959 | DEFUN(NAME(aout,make_empty_symbol),(abfd), | |
960 | bfd *abfd) | |
9e2dad8e JG |
961 | { |
962 | aout_symbol_type *new = | |
963 | (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type)); | |
964 | new->symbol.the_bfd = abfd; | |
7ed4093a | 965 | |
9e2dad8e JG |
966 | return &new->symbol; |
967 | } | |
7ed4093a SC |
968 | |
969 | boolean | |
970 | DEFUN(NAME(aout,slurp_symbol_table),(abfd), | |
971 | bfd *abfd) | |
9e2dad8e JG |
972 | { |
973 | bfd_size_type symbol_size; | |
974 | bfd_size_type string_size; | |
975 | unsigned char string_chars[BYTES_IN_WORD]; | |
976 | struct external_nlist *syms; | |
977 | char *strings; | |
978 | aout_symbol_type *cached; | |
7ed4093a | 979 | |
9e2dad8e JG |
980 | /* If there's no work to be done, don't do any */ |
981 | if (obj_aout_symbols (abfd) != (aout_symbol_type *)NULL) return true; | |
982 | symbol_size = exec_hdr(abfd)->a_syms; | |
983 | if (symbol_size == 0) { | |
984 | bfd_error = no_symbols; | |
985 | return false; | |
986 | } | |
7ed4093a | 987 | |
9e2dad8e JG |
988 | bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET); |
989 | if (bfd_read ((PTR)string_chars, BYTES_IN_WORD, 1, abfd) != BYTES_IN_WORD) | |
990 | return false; | |
991 | string_size = GET_WORD (abfd, string_chars); | |
7ed4093a | 992 | |
9e2dad8e JG |
993 | strings =(char *) bfd_alloc(abfd, string_size + 1); |
994 | cached = (aout_symbol_type *) | |
995 | bfd_zalloc(abfd, (bfd_size_type)(bfd_get_symcount (abfd) * sizeof(aout_symbol_type))); | |
996 | ||
997 | /* malloc this, so we can free it if simply. The symbol caching | |
998 | might want to allocate onto the bfd's obstack */ | |
98d43107 | 999 | syms = (struct external_nlist *) bfd_xmalloc(symbol_size); |
9e2dad8e JG |
1000 | bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET); |
1001 | if (bfd_read ((PTR)syms, 1, symbol_size, abfd) != symbol_size) { | |
1002 | bailout: | |
1003 | if (syms) free (syms); | |
1004 | if (cached) bfd_release (abfd, cached); | |
1005 | if (strings)bfd_release (abfd, strings); | |
1006 | return false; | |
1007 | } | |
7ed4093a | 1008 | |
9e2dad8e JG |
1009 | bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET); |
1010 | if (bfd_read ((PTR)strings, 1, string_size, abfd) != string_size) { | |
1011 | goto bailout; | |
1012 | } | |
7ed4093a | 1013 | |
9e2dad8e JG |
1014 | /* OK, now walk the new symtable, cacheing symbol properties */ |
1015 | { | |
1016 | register struct external_nlist *sym_pointer; | |
1017 | register struct external_nlist *sym_end = syms + bfd_get_symcount (abfd); | |
1018 | register aout_symbol_type *cache_ptr = cached; | |
7ed4093a | 1019 | |
9e2dad8e JG |
1020 | /* Run through table and copy values */ |
1021 | for (sym_pointer = syms, cache_ptr = cached; | |
1022 | sym_pointer < sym_end; sym_pointer++, cache_ptr++) | |
1023 | { | |
1024 | bfd_vma x = GET_WORD(abfd, sym_pointer->e_strx); | |
1025 | cache_ptr->symbol.the_bfd = abfd; | |
1026 | if (x) | |
1027 | cache_ptr->symbol.name = x + strings; | |
1028 | else | |
1029 | cache_ptr->symbol.name = (char *)NULL; | |
7ed4093a | 1030 | |
9e2dad8e JG |
1031 | cache_ptr->symbol.value = GET_SWORD(abfd, sym_pointer->e_value); |
1032 | cache_ptr->desc = bfd_get_16(abfd, sym_pointer->e_desc); | |
1033 | cache_ptr->other =bfd_get_8(abfd, sym_pointer->e_other); | |
1034 | cache_ptr->type = bfd_get_8(abfd, sym_pointer->e_type); | |
1035 | cache_ptr->symbol.udata = 0; | |
1036 | translate_from_native_sym_flags (sym_pointer, cache_ptr, abfd); | |
1037 | } | |
1038 | } | |
7ed4093a | 1039 | |
9e2dad8e JG |
1040 | obj_aout_symbols (abfd) = cached; |
1041 | free((PTR)syms); | |
7ed4093a | 1042 | |
9e2dad8e JG |
1043 | return true; |
1044 | } | |
7ed4093a SC |
1045 | |
1046 | ||
1047 | void | |
1048 | DEFUN(NAME(aout,write_syms),(abfd), | |
1049 | bfd *abfd) | |
1050 | { | |
1051 | unsigned int count ; | |
1052 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1053 | ||
1054 | bfd_size_type stindex = BYTES_IN_WORD; /* initial string length */ | |
1055 | ||
1056 | for (count = 0; count < bfd_get_symcount (abfd); count++) { | |
1057 | asymbol *g = generic[count]; | |
1058 | struct external_nlist nsp; | |
1059 | ||
7ed4093a SC |
1060 | if (g->name) { |
1061 | unsigned int length = strlen(g->name) +1; | |
1062 | PUT_WORD (abfd, stindex, (unsigned char *)nsp.e_strx); | |
1063 | stindex += length; | |
1064 | } | |
1065 | else { | |
1066 | PUT_WORD (abfd, 0, (unsigned char *)nsp.e_strx); | |
1067 | } | |
1068 | ||
1069 | if (g->the_bfd->xvec->flavour == abfd->xvec->flavour) | |
1070 | { | |
1071 | bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc); | |
1072 | bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other); | |
1073 | bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type); | |
1074 | } | |
1075 | else | |
1076 | { | |
1077 | bfd_h_put_16(abfd,0, nsp.e_desc); | |
1078 | bfd_h_put_8(abfd, 0, nsp.e_other); | |
1079 | bfd_h_put_8(abfd, 0, nsp.e_type); | |
1080 | } | |
7b02b4ed | 1081 | |
7d003262 | 1082 | translate_to_native_sym_flags (&nsp, g, abfd); |
7b02b4ed JG |
1083 | |
1084 | bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd); | |
7ed4093a SC |
1085 | } |
1086 | ||
7ed4093a | 1087 | /* Now output the strings. Be sure to put string length into correct |
7b02b4ed | 1088 | byte ordering before writing it. */ |
7ed4093a SC |
1089 | { |
1090 | char buffer[BYTES_IN_WORD]; | |
1091 | PUT_WORD (abfd, stindex, (unsigned char *)buffer); | |
1092 | ||
1093 | bfd_write((PTR)buffer, 1, BYTES_IN_WORD, abfd); | |
1094 | } | |
1095 | generic = bfd_get_outsymbols(abfd); | |
1096 | for (count = 0; count < bfd_get_symcount(abfd); count++) | |
1097 | { | |
1098 | asymbol *g = *(generic++); | |
1099 | ||
1100 | if (g->name) | |
1101 | { | |
1102 | size_t length = strlen(g->name)+1; | |
1103 | bfd_write((PTR)g->name, 1, length, abfd); | |
1104 | } | |
1105 | if ((g->flags & BSF_FAKE)==0) { | |
c618de01 | 1106 | g->KEEPIT = (KEEPITTYPE) count; |
7ed4093a SC |
1107 | } |
1108 | } | |
1109 | } | |
1110 | ||
1111 | ||
1112 | ||
1113 | unsigned int | |
1114 | DEFUN(NAME(aout,get_symtab),(abfd, location), | |
1115 | bfd *abfd AND | |
1116 | asymbol **location) | |
3f7607af | 1117 | { |
7ed4093a SC |
1118 | unsigned int counter = 0; |
1119 | aout_symbol_type *symbase; | |
1120 | ||
1121 | if (!NAME(aout,slurp_symbol_table)(abfd)) return 0; | |
1122 | ||
1123 | for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);) | |
1124 | *(location++) = (asymbol *)( symbase++); | |
1125 | *location++ =0; | |
1126 | return bfd_get_symcount(abfd); | |
3f7607af | 1127 | } |
7ed4093a SC |
1128 | |
1129 | \f | |
1130 | /* Standard reloc stuff */ | |
1131 | /* Output standard relocation information to a file in target byte order. */ | |
1132 | ||
1133 | void | |
1134 | DEFUN(NAME(aout,swap_std_reloc_out),(abfd, g, natptr), | |
1135 | bfd *abfd AND | |
1136 | arelent *g AND | |
1137 | struct reloc_std_external *natptr) | |
3f7607af | 1138 | { |
7ed4093a SC |
1139 | int r_index; |
1140 | int r_extern; | |
1141 | unsigned int r_length; | |
1142 | int r_pcrel; | |
1143 | int r_baserel, r_jmptable, r_relative; | |
1144 | unsigned int r_addend; | |
1145 | ||
1146 | PUT_WORD(abfd, g->address, natptr->r_address); | |
1147 | ||
1148 | r_length = g->howto->size ; /* Size as a power of two */ | |
1149 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
1150 | /* r_baserel, r_jmptable, r_relative??? FIXME-soon */ | |
1151 | r_baserel = 0; | |
1152 | r_jmptable = 0; | |
1153 | r_relative = 0; | |
1154 | ||
1155 | r_addend = g->addend; /* Start here, see how it goes */ | |
1156 | ||
1157 | /* name was clobbered by aout_write_syms to be symbol index */ | |
1158 | ||
1159 | if (g->sym_ptr_ptr != NULL) | |
1160 | { | |
1161 | if ((*(g->sym_ptr_ptr))->section) { | |
1162 | /* put the section offset into the addend for output */ | |
1163 | r_addend += (*(g->sym_ptr_ptr))->section->vma; | |
1164 | } | |
1165 | ||
c618de01 | 1166 | r_index = ((*(g->sym_ptr_ptr))->KEEPIT); |
7ed4093a SC |
1167 | r_extern = 1; |
1168 | } | |
1169 | else { | |
1170 | r_extern = 0; | |
1171 | if (g->section == NULL) { | |
1172 | /* It is possible to have a reloc with nothing, we generate an | |
1173 | abs + 0 */ | |
1174 | r_addend = 0; | |
1175 | r_index = N_ABS | N_EXT; | |
1176 | } | |
1177 | else if(g->section->output_section == obj_textsec(abfd)) { | |
1178 | r_index = N_TEXT | N_EXT; | |
1179 | r_addend += g->section->output_section->vma; | |
1180 | } | |
1181 | else if (g->section->output_section == obj_datasec(abfd)) { | |
1182 | r_index = N_DATA | N_EXT; | |
1183 | r_addend += g->section->output_section->vma; | |
1184 | } | |
1185 | else if (g->section->output_section == obj_bsssec(abfd)) { | |
1186 | r_index = N_BSS | N_EXT ; | |
1187 | r_addend += g->section->output_section->vma; | |
1188 | } | |
1189 | else { | |
1190 | BFD_ASSERT(0); | |
fb3be09b | 1191 | r_index = N_ABS | N_EXT; |
7ed4093a SC |
1192 | } |
1193 | } | |
1194 | ||
1195 | /* now the fun stuff */ | |
1196 | if (abfd->xvec->header_byteorder_big_p != false) { | |
1197 | natptr->r_index[0] = r_index >> 16; | |
1198 | natptr->r_index[1] = r_index >> 8; | |
1199 | natptr->r_index[2] = r_index; | |
1200 | natptr->r_type[0] = | |
1201 | (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0) | |
1202 | | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0) | |
1203 | | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0) | |
1204 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0) | |
1205 | | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0) | |
1206 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG); | |
1207 | } else { | |
1208 | natptr->r_index[2] = r_index >> 16; | |
1209 | natptr->r_index[1] = r_index >> 8; | |
1210 | natptr->r_index[0] = r_index; | |
1211 | natptr->r_type[0] = | |
1212 | (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0) | |
1213 | | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0) | |
1214 | | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0) | |
1215 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0) | |
1216 | | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0) | |
1217 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
1218 | } | |
3f7607af | 1219 | } |
7ed4093a SC |
1220 | |
1221 | ||
1222 | /* Extended stuff */ | |
1223 | /* Output extended relocation information to a file in target byte order. */ | |
1224 | ||
1225 | void | |
1226 | DEFUN(NAME(aout,swap_ext_reloc_out),(abfd, g, natptr), | |
1227 | bfd *abfd AND | |
1228 | arelent *g AND | |
1229 | register struct reloc_ext_external *natptr) | |
3f7607af | 1230 | { |
7ed4093a SC |
1231 | int r_index; |
1232 | int r_extern; | |
1233 | unsigned int r_type; | |
1234 | unsigned int r_addend; | |
1235 | ||
1236 | PUT_WORD (abfd, g->address, natptr->r_address); | |
1237 | ||
1238 | /* Find a type in the output format which matches the input howto - | |
1239 | at the moment we assume input format == output format FIXME!! */ | |
3f7607af | 1240 | r_type = (unsigned int) g->howto->type; |
7ed4093a SC |
1241 | |
1242 | r_addend = g->addend; /* Start here, see how it goes */ | |
1243 | ||
1244 | /* name was clobbered by aout_write_syms to be symbol index*/ | |
1245 | ||
1246 | if (g->sym_ptr_ptr != NULL) | |
1247 | { | |
1248 | if ((*(g->sym_ptr_ptr))->section) { | |
1249 | /* put the section offset into the addend for output */ | |
1250 | r_addend += (*(g->sym_ptr_ptr))->section->vma; | |
1251 | } | |
1252 | ||
c618de01 | 1253 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); |
7ed4093a SC |
1254 | r_extern = 1; |
1255 | } | |
1256 | else { | |
1257 | r_extern = 0; | |
1258 | if (g->section == NULL) { | |
1259 | BFD_ASSERT(0); | |
1260 | r_index = N_ABS | N_EXT; | |
1261 | } | |
1262 | else if(g->section->output_section == obj_textsec(abfd)) { | |
1263 | r_index = N_TEXT | N_EXT; | |
1264 | r_addend += g->section->output_section->vma; | |
1265 | } | |
1266 | else if (g->section->output_section == obj_datasec(abfd)) { | |
1267 | r_index = N_DATA | N_EXT; | |
1268 | r_addend += g->section->output_section->vma; | |
1269 | } | |
1270 | else if (g->section->output_section == obj_bsssec(abfd)) { | |
1271 | r_index = N_BSS | N_EXT ; | |
1272 | r_addend += g->section->output_section->vma; | |
1273 | } | |
1274 | else { | |
1275 | BFD_ASSERT(0); | |
fb3be09b | 1276 | r_index = N_ABS | N_EXT; |
7ed4093a SC |
1277 | } |
1278 | } | |
1279 | ||
1280 | /* now the fun stuff */ | |
1281 | if (abfd->xvec->header_byteorder_big_p != false) { | |
1282 | natptr->r_index[0] = r_index >> 16; | |
1283 | natptr->r_index[1] = r_index >> 8; | |
1284 | natptr->r_index[2] = r_index; | |
1285 | natptr->r_type[0] = | |
1286 | (r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0) | |
1287 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG); | |
1288 | } else { | |
1289 | natptr->r_index[2] = r_index >> 16; | |
1290 | natptr->r_index[1] = r_index >> 8; | |
1291 | natptr->r_index[0] = r_index; | |
1292 | natptr->r_type[0] = | |
1293 | (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0) | |
1294 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
1295 | } | |
1296 | ||
1297 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
1298 | } | |
1299 | ||
1300 | #define MOVE_ADDRESS(ad) \ | |
1301 | if (r_extern) { \ | |
1302 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
1303 | cache_ptr->section = (asection *)NULL; \ | |
1304 | cache_ptr->addend = ad; \ | |
1305 | } else { \ | |
1306 | cache_ptr->sym_ptr_ptr = (asymbol **)NULL; \ | |
1307 | switch (r_index) { \ | |
1308 | case N_TEXT: \ | |
1309 | case N_TEXT | N_EXT: \ | |
1310 | cache_ptr->section = obj_textsec(abfd); \ | |
1311 | cache_ptr->addend = ad - su->textsec->vma; \ | |
1312 | break; \ | |
1313 | case N_DATA: \ | |
1314 | case N_DATA | N_EXT: \ | |
1315 | cache_ptr->section = obj_datasec(abfd); \ | |
1316 | cache_ptr->addend = ad - su->datasec->vma; \ | |
1317 | break; \ | |
1318 | case N_BSS: \ | |
1319 | case N_BSS | N_EXT: \ | |
1320 | cache_ptr->section = obj_bsssec(abfd); \ | |
1321 | cache_ptr->addend = ad - su->bsssec->vma; \ | |
1322 | break; \ | |
1323 | case N_ABS: \ | |
1324 | case N_ABS | N_EXT: \ | |
1325 | cache_ptr->section = NULL; /* No section */ \ | |
1326 | cache_ptr->addend = ad; /* FIXME, is this right? */ \ | |
1327 | BFD_ASSERT(1); \ | |
1328 | break; \ | |
1329 | default: \ | |
1330 | cache_ptr->section = NULL; /* No section */ \ | |
1331 | cache_ptr->addend = ad; /* FIXME, is this right? */ \ | |
1332 | BFD_ASSERT(1); \ | |
1333 | break; \ | |
1334 | } \ | |
1335 | } \ | |
1336 | ||
1337 | void | |
1338 | DEFUN(NAME(aout,swap_ext_reloc_in), (abfd, bytes, cache_ptr, symbols), | |
1339 | bfd *abfd AND | |
1340 | struct reloc_ext_external *bytes AND | |
1341 | arelent *cache_ptr AND | |
1342 | asymbol **symbols) | |
1343 | { | |
1344 | int r_index; | |
1345 | int r_extern; | |
1346 | unsigned int r_type; | |
1347 | struct aoutdata *su = (struct aoutdata *)(abfd->tdata); | |
1348 | ||
1349 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
1350 | ||
1351 | /* now the fun stuff */ | |
1352 | if (abfd->xvec->header_byteorder_big_p != false) { | |
1353 | r_index = (bytes->r_index[0] << 16) | |
1354 | | (bytes->r_index[1] << 8) | |
1355 | | bytes->r_index[2]; | |
1356 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
1357 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
1358 | >> RELOC_EXT_BITS_TYPE_SH_BIG; | |
1359 | } else { | |
1360 | r_index = (bytes->r_index[2] << 16) | |
1361 | | (bytes->r_index[1] << 8) | |
1362 | | bytes->r_index[0]; | |
1363 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
1364 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
1365 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE; | |
1366 | } | |
1367 | ||
1368 | cache_ptr->howto = howto_table_ext + r_type; | |
1369 | MOVE_ADDRESS(GET_SWORD(abfd,bytes->r_addend)); | |
1370 | } | |
1371 | ||
1372 | void | |
1373 | DEFUN(NAME(aout,swap_std_reloc_in), (abfd, bytes, cache_ptr, symbols), | |
1374 | bfd *abfd AND | |
1375 | struct reloc_std_external *bytes AND | |
1376 | arelent *cache_ptr AND | |
1377 | asymbol **symbols) | |
1378 | { | |
1379 | int r_index; | |
1380 | int r_extern; | |
1381 | unsigned int r_length; | |
1382 | int r_pcrel; | |
1383 | int r_baserel, r_jmptable, r_relative; | |
1384 | struct aoutdata *su = (struct aoutdata *)(abfd->tdata); | |
1385 | ||
1386 | cache_ptr->address = (int32_type)(bfd_h_get_32 (abfd, bytes->r_address)); | |
1387 | ||
1388 | /* now the fun stuff */ | |
1389 | if (abfd->xvec->header_byteorder_big_p != false) { | |
1390 | r_index = (bytes->r_index[0] << 16) | |
1391 | | (bytes->r_index[1] << 8) | |
1392 | | bytes->r_index[2]; | |
1393 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
1394 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
1395 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
1396 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
1397 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
1398 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
1399 | >> RELOC_STD_BITS_LENGTH_SH_BIG; | |
1400 | } else { | |
1401 | r_index = (bytes->r_index[2] << 16) | |
1402 | | (bytes->r_index[1] << 8) | |
1403 | | bytes->r_index[0]; | |
1404 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
1405 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
1406 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
1407 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
1408 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
1409 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
1410 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE; | |
1411 | } | |
1412 | ||
1413 | cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel; | |
1414 | /* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */ | |
1415 | ||
1416 | MOVE_ADDRESS(0); | |
1417 | } | |
1418 | ||
1419 | /* Reloc hackery */ | |
1420 | ||
1421 | boolean | |
1422 | DEFUN(NAME(aout,slurp_reloc_table),(abfd, asect, symbols), | |
1423 | bfd *abfd AND | |
1424 | sec_ptr asect AND | |
1425 | asymbol **symbols) | |
1426 | { | |
1427 | unsigned int count; | |
1428 | bfd_size_type reloc_size; | |
1429 | PTR relocs; | |
1430 | arelent *reloc_cache; | |
1431 | size_t each_size; | |
1432 | ||
1433 | if (asect->relocation) return true; | |
1434 | ||
1435 | if (asect->flags & SEC_CONSTRUCTOR) return true; | |
1436 | ||
1437 | if (asect == obj_datasec (abfd)) { | |
1438 | reloc_size = exec_hdr(abfd)->a_drsize; | |
1439 | goto doit; | |
1440 | } | |
1441 | ||
1442 | if (asect == obj_textsec (abfd)) { | |
1443 | reloc_size = exec_hdr(abfd)->a_trsize; | |
1444 | goto doit; | |
1445 | } | |
1446 | ||
1447 | bfd_error = invalid_operation; | |
1448 | return false; | |
1449 | ||
1450 | doit: | |
1451 | bfd_seek (abfd, asect->rel_filepos, SEEK_SET); | |
1452 | each_size = obj_reloc_entry_size (abfd); | |
1453 | ||
1454 | count = reloc_size / each_size; | |
1455 | ||
1456 | ||
1457 | reloc_cache = (arelent *) bfd_zalloc (abfd, (size_t)(count * sizeof | |
1458 | (arelent))); | |
1459 | if (!reloc_cache) { | |
1460 | nomem: | |
1461 | bfd_error = no_memory; | |
1462 | return false; | |
1463 | } | |
1464 | ||
1465 | relocs = (PTR) bfd_alloc (abfd, reloc_size); | |
1466 | if (!relocs) { | |
1467 | bfd_release (abfd, reloc_cache); | |
1468 | goto nomem; | |
1469 | } | |
1470 | ||
1471 | if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) { | |
1472 | bfd_release (abfd, relocs); | |
1473 | bfd_release (abfd, reloc_cache); | |
1474 | bfd_error = system_call_error; | |
1475 | return false; | |
1476 | } | |
1477 | ||
1478 | if (each_size == RELOC_EXT_SIZE) { | |
1479 | register struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; | |
1480 | unsigned int counter = 0; | |
1481 | arelent *cache_ptr = reloc_cache; | |
1482 | ||
1483 | for (; counter < count; counter++, rptr++, cache_ptr++) { | |
1484 | NAME(aout,swap_ext_reloc_in)(abfd, rptr, cache_ptr, symbols); | |
1485 | } | |
1486 | } else { | |
1487 | register struct reloc_std_external *rptr = (struct reloc_std_external*) relocs; | |
1488 | unsigned int counter = 0; | |
1489 | arelent *cache_ptr = reloc_cache; | |
1490 | ||
1491 | for (; counter < count; counter++, rptr++, cache_ptr++) { | |
1492 | NAME(aout,swap_std_reloc_in)(abfd, rptr, cache_ptr, symbols); | |
1493 | } | |
1494 | ||
1495 | } | |
1496 | ||
1497 | bfd_release (abfd,relocs); | |
1498 | asect->relocation = reloc_cache; | |
1499 | asect->reloc_count = count; | |
1500 | return true; | |
1501 | } | |
1502 | ||
1503 | ||
1504 | ||
1505 | /* Write out a relocation section into an object file. */ | |
1506 | ||
1507 | boolean | |
1508 | DEFUN(NAME(aout,squirt_out_relocs),(abfd, section), | |
1509 | bfd *abfd AND | |
1510 | asection *section) | |
1511 | { | |
1512 | arelent **generic; | |
1513 | unsigned char *native, *natptr; | |
1514 | size_t each_size; | |
1515 | ||
1516 | unsigned int count = section->reloc_count; | |
1517 | size_t natsize; | |
1518 | ||
1519 | if (count == 0) return true; | |
1520 | ||
1521 | each_size = obj_reloc_entry_size (abfd); | |
1522 | natsize = each_size * count; | |
1523 | native = (unsigned char *) bfd_zalloc (abfd, natsize); | |
1524 | if (!native) { | |
1525 | bfd_error = no_memory; | |
1526 | return false; | |
1527 | } | |
1528 | ||
1529 | generic = section->orelocation; | |
1530 | ||
1531 | if (each_size == RELOC_EXT_SIZE) | |
1532 | { | |
1533 | for (natptr = native; | |
1534 | count != 0; | |
1535 | --count, natptr += each_size, ++generic) | |
1536 | NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr); | |
1537 | } | |
1538 | else | |
1539 | { | |
1540 | for (natptr = native; | |
1541 | count != 0; | |
1542 | --count, natptr += each_size, ++generic) | |
1543 | NAME(aout,swap_std_reloc_out)(abfd, *generic, (struct reloc_std_external *)natptr); | |
1544 | } | |
1545 | ||
1546 | if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) { | |
1547 | bfd_release(abfd, native); | |
1548 | return false; | |
1549 | } | |
1550 | bfd_release (abfd, native); | |
1551 | ||
1552 | return true; | |
1553 | } | |
1554 | ||
1555 | /* This is stupid. This function should be a boolean predicate */ | |
1556 | unsigned int | |
1557 | DEFUN(NAME(aout,canonicalize_reloc),(abfd, section, relptr, symbols), | |
1558 | bfd *abfd AND | |
1559 | sec_ptr section AND | |
1560 | arelent **relptr AND | |
1561 | asymbol **symbols) | |
1562 | { | |
1563 | arelent *tblptr = section->relocation; | |
1564 | unsigned int count; | |
1565 | ||
1566 | if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols))) | |
1567 | return 0; | |
1568 | ||
1569 | if (section->flags & SEC_CONSTRUCTOR) { | |
1570 | arelent_chain *chain = section->constructor_chain; | |
1571 | for (count = 0; count < section->reloc_count; count ++) { | |
1572 | *relptr ++ = &chain->relent; | |
1573 | chain = chain->next; | |
1574 | } | |
1575 | } | |
1576 | else { | |
1577 | tblptr = section->relocation; | |
1578 | if (!tblptr) return 0; | |
1579 | ||
1580 | for (count = 0; count++ < section->reloc_count;) | |
1581 | { | |
1582 | *relptr++ = tblptr++; | |
1583 | } | |
1584 | } | |
1585 | *relptr = 0; | |
1586 | ||
1587 | return section->reloc_count; | |
1588 | } | |
1589 | ||
1590 | unsigned int | |
1591 | DEFUN(NAME(aout,get_reloc_upper_bound),(abfd, asect), | |
1592 | bfd *abfd AND | |
1593 | sec_ptr asect) | |
1594 | { | |
1595 | if (bfd_get_format (abfd) != bfd_object) { | |
1596 | bfd_error = invalid_operation; | |
1597 | return 0; | |
1598 | } | |
1599 | if (asect->flags & SEC_CONSTRUCTOR) { | |
1600 | return (sizeof (arelent *) * (asect->reloc_count+1)); | |
1601 | } | |
1602 | ||
1603 | ||
1604 | if (asect == obj_datasec (abfd)) | |
1605 | return (sizeof (arelent *) * | |
1606 | ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd)) | |
1607 | +1)); | |
1608 | ||
1609 | if (asect == obj_textsec (abfd)) | |
1610 | return (sizeof (arelent *) * | |
1611 | ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd)) | |
1612 | +1)); | |
1613 | ||
1614 | bfd_error = invalid_operation; | |
1615 | return 0; | |
1616 | } | |
1617 | ||
1618 | \f | |
1619 | unsigned int | |
1620 | DEFUN(NAME(aout,get_symtab_upper_bound),(abfd), | |
1621 | bfd *abfd) | |
1622 | { | |
1623 | if (!NAME(aout,slurp_symbol_table)(abfd)) return 0; | |
1624 | ||
1625 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
1626 | } | |
1627 | alent * | |
1628 | DEFUN(NAME(aout,get_lineno),(ignore_abfd, ignore_symbol), | |
1629 | bfd *ignore_abfd AND | |
1630 | asymbol *ignore_symbol) | |
1631 | { | |
1632 | return (alent *)NULL; | |
1633 | } | |
1634 | ||
1635 | ||
1636 | void | |
1637 | DEFUN(NAME(aout,print_symbol),(ignore_abfd, afile, symbol, how), | |
1638 | bfd *ignore_abfd AND | |
1639 | PTR afile AND | |
1640 | asymbol *symbol AND | |
9e2dad8e | 1641 | bfd_print_symbol_type how) |
7ed4093a SC |
1642 | { |
1643 | FILE *file = (FILE *)afile; | |
1644 | ||
1645 | switch (how) { | |
9e2dad8e | 1646 | case bfd_print_symbol_name: |
fb3be09b JG |
1647 | if (symbol->name) |
1648 | fprintf(file,"%s", symbol->name); | |
7ed4093a | 1649 | break; |
9e2dad8e | 1650 | case bfd_print_symbol_more: |
7ed4093a SC |
1651 | fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff), |
1652 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
1653 | (unsigned)(aout_symbol(symbol)->type)); | |
1654 | break; | |
9e2dad8e | 1655 | case bfd_print_symbol_all: |
7ed4093a SC |
1656 | { |
1657 | CONST char *section_name = symbol->section == (asection *)NULL ? | |
f8adc62d | 1658 | (CONST char *)"*abs" : symbol->section->name; |
7ed4093a SC |
1659 | |
1660 | bfd_print_symbol_vandf((PTR)file,symbol); | |
1661 | ||
fb3be09b | 1662 | fprintf(file," %-5s %04x %02x %02x", |
7ed4093a SC |
1663 | section_name, |
1664 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
1665 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
9e2dad8e | 1666 | (unsigned)(aout_symbol(symbol)->type & 0xff)); |
fb3be09b JG |
1667 | if (symbol->name) |
1668 | fprintf(file," %s", symbol->name); | |
7ed4093a SC |
1669 | } |
1670 | break; | |
98d43107 JG |
1671 | case bfd_print_symbol_nm: |
1672 | { | |
1673 | int section_code = bfd_decode_symclass (symbol); | |
1674 | ||
1675 | if (section_code == 'U') | |
1676 | fprintf(file, " "); | |
1677 | else if (symbol->section != (asection *)NULL) | |
1678 | fprintf_vma(file, symbol->value+symbol->section->vma); | |
1679 | else | |
1680 | fprintf_vma(file, symbol->value); | |
1681 | if (section_code == '?') | |
1682 | { | |
1683 | int type_code = aout_symbol(symbol)->type & 0xff; | |
7de245d3 | 1684 | char *stab_name = aout_stab_name(type_code); |
98d43107 JG |
1685 | char buf[10]; |
1686 | if (stab_name == NULL) | |
1687 | { | |
1688 | sprintf(buf, "(%d)", type_code); | |
1689 | stab_name = buf; | |
1690 | } | |
1691 | fprintf(file," - %02x %04x %5s", | |
1692 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
1693 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
1694 | stab_name); | |
1695 | } | |
1696 | else | |
1697 | fprintf(file," %c", section_code); | |
1698 | if (symbol->name) | |
1699 | fprintf(file," %s", symbol->name); | |
1700 | } | |
1701 | break; | |
7ed4093a SC |
1702 | } |
1703 | } | |
1704 | ||
1705 | /* | |
6724ff46 | 1706 | provided a BFD, a section and an offset into the section, calculate |
7ed4093a SC |
1707 | and return the name of the source file and the line nearest to the |
1708 | wanted location. | |
1709 | */ | |
1710 | ||
1711 | boolean | |
1712 | DEFUN(NAME(aout,find_nearest_line),(abfd, | |
1713 | section, | |
1714 | symbols, | |
1715 | offset, | |
1716 | filename_ptr, | |
1717 | functionname_ptr, | |
1718 | line_ptr), | |
1719 | bfd *abfd AND | |
1720 | asection *section AND | |
1721 | asymbol **symbols AND | |
1722 | bfd_vma offset AND | |
1723 | CONST char **filename_ptr AND | |
1724 | CONST char **functionname_ptr AND | |
1725 | unsigned int *line_ptr) | |
1726 | { | |
1727 | /* Run down the file looking for the filename, function and linenumber */ | |
1728 | asymbol **p; | |
1729 | static char buffer[100]; | |
98d43107 | 1730 | static char filename_buffer[200]; |
3f7607af PB |
1731 | char *directory_name = NULL; |
1732 | char *main_file_name = NULL; | |
1733 | char *current_file_name = NULL; | |
1734 | char *line_file_name = NULL; /* Value of current_file_name at line number. */ | |
7ed4093a SC |
1735 | bfd_vma high_line_vma = ~0; |
1736 | bfd_vma low_func_vma = 0; | |
1737 | asymbol *func = 0; | |
1738 | *filename_ptr = abfd->filename; | |
1739 | *functionname_ptr = 0; | |
1740 | *line_ptr = 0; | |
1741 | if (symbols != (asymbol **)NULL) { | |
1742 | for (p = symbols; *p; p++) { | |
1743 | aout_symbol_type *q = (aout_symbol_type *)(*p); | |
98d43107 | 1744 | next: |
7ed4093a SC |
1745 | switch (q->type){ |
1746 | case N_SO: | |
3f7607af | 1747 | main_file_name = current_file_name = q->symbol.name; |
98d43107 JG |
1748 | /* Look ahead to next symbol to check if that too is an N_SO. */ |
1749 | p++; | |
1750 | if (*p == NULL) | |
1751 | break; | |
1752 | q = (aout_symbol_type *)(*p); | |
1753 | if (q->type != N_SO) | |
1754 | goto next; | |
1755 | ||
1756 | /* Found a second N_SO First is directory; second is filename. */ | |
3f7607af PB |
1757 | directory_name = current_file_name; |
1758 | main_file_name = current_file_name = q->symbol.name; | |
1759 | if (obj_textsec(abfd) != section) | |
1760 | goto done; | |
1761 | break; | |
1762 | case N_SOL: | |
1763 | current_file_name = q->symbol.name; | |
7ed4093a | 1764 | break; |
3f7607af | 1765 | |
7ed4093a SC |
1766 | case N_SLINE: |
1767 | ||
1768 | case N_DSLINE: | |
1769 | case N_BSLINE: | |
1770 | /* We'll keep this if it resolves nearer than the one we have already */ | |
1771 | if (q->symbol.value >= offset && | |
1772 | q->symbol.value < high_line_vma) { | |
1773 | *line_ptr = q->desc; | |
1774 | high_line_vma = q->symbol.value; | |
3f7607af | 1775 | line_file_name = current_file_name; |
7ed4093a SC |
1776 | } |
1777 | break; | |
1778 | case N_FUN: | |
1779 | { | |
1780 | /* We'll keep this if it is nearer than the one we have already */ | |
1781 | if (q->symbol.value >= low_func_vma && | |
1782 | q->symbol.value <= offset) { | |
1783 | low_func_vma = q->symbol.value; | |
1784 | func = (asymbol *)q; | |
1785 | } | |
1786 | if (*line_ptr && func) { | |
1787 | CONST char *function = func->name; | |
1788 | char *p; | |
1789 | strncpy(buffer, function, sizeof(buffer)-1); | |
1790 | buffer[sizeof(buffer)-1] = 0; | |
1791 | /* Have to remove : stuff */ | |
1792 | p = strchr(buffer,':'); | |
7b02b4ed | 1793 | if (p != NULL) { *p = '\0'; } |
7ed4093a | 1794 | *functionname_ptr = buffer; |
3f7607af | 1795 | goto done; |
7ed4093a SC |
1796 | |
1797 | } | |
1798 | } | |
1799 | break; | |
1800 | } | |
1801 | } | |
1802 | } | |
3f7607af PB |
1803 | |
1804 | done: | |
1805 | if (*line_ptr) | |
1806 | main_file_name = line_file_name; | |
1807 | if (main_file_name) { | |
1808 | if (main_file_name[0] == '/' || directory_name == NULL) | |
1809 | *filename_ptr = main_file_name; | |
1810 | else { | |
1811 | sprintf(filename_buffer, "%.140s%.50s", | |
1812 | directory_name, main_file_name); | |
1813 | *filename_ptr = filename_buffer; | |
1814 | } | |
1815 | } | |
7ed4093a SC |
1816 | return true; |
1817 | ||
1818 | } | |
1819 | ||
1820 | int | |
cbdc7909 JG |
1821 | DEFUN(NAME(aout,sizeof_headers),(abfd, execable), |
1822 | bfd *abfd AND | |
9e2dad8e | 1823 | boolean execable) |
7ed4093a | 1824 | { |
cbdc7909 | 1825 | return adata(abfd)->exec_bytes_size; |
7ed4093a | 1826 | } |