Commit | Line | Data |
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1f29e30b JG |
1 | /* BFD semi-generic back-end for a.out binaries. |
2 | Copyright 1990, 1991, 1992 Free Software Foundation, Inc. | |
88dfcd68 | 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 | ||
ce07dd7c KR |
111 | /* Some assumptions: |
112 | * Any BFD with D_PAGED set is ZMAGIC, and vice versa. | |
113 | Doesn't matter what the setting of WP_TEXT is on output, but it'll | |
114 | get set on input. | |
115 | * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC. | |
116 | * Any BFD with both flags clear is OMAGIC. | |
117 | (Just want to make these explicit, so the conditions tested in this | |
118 | file make sense if you're more familiar with a.out than with BFD.) */ | |
119 | ||
c618de01 SC |
120 | #define KEEPIT flags |
121 | #define KEEPITTYPE int | |
67c060c3 SC |
122 | |
123 | #include "bfd.h" | |
7ed4093a SC |
124 | #include <sysdep.h> |
125 | #include <ansidecl.h> | |
126 | ||
9e2dad8e | 127 | struct external_exec; |
6f715d66 | 128 | #include "libaout.h" |
7ed4093a | 129 | #include "libbfd.h" |
c3eb25fc SC |
130 | #include "aout/aout64.h" |
131 | #include "aout/stab_gnu.h" | |
132 | #include "aout/ar.h" | |
7ed4093a | 133 | |
ce07dd7c | 134 | extern void (*bfd_error_trap)(); |
7ed4093a | 135 | |
4e41b5aa SC |
136 | /* |
137 | SUBSECTION | |
138 | relocations | |
139 | ||
140 | DESCRIPTION | |
141 | The file @code{aoutx.h} caters for both the @emph{standard} | |
142 | and @emph{extended} forms of a.out relocation records. | |
143 | ||
144 | The standard records are characterised by containing only an | |
145 | address, a symbol index and a type field. The extended records | |
146 | (used on 29ks and sparcs) also have a full integer for an | |
147 | addend. | |
7ed4093a | 148 | |
6f715d66 | 149 | */ |
7ed4093a | 150 | #define CTOR_TABLE_RELOC_IDX 2 |
67c060c3 | 151 | |
ce07dd7c KR |
152 | #define howto_table_ext NAME(aout,ext_howto_table) |
153 | #define howto_table_std NAME(aout,std_howto_table) | |
67c060c3 | 154 | |
ce07dd7c | 155 | reloc_howto_type howto_table_ext[] = |
7ed4093a SC |
156 | { |
157 | HOWTO(RELOC_8, 0, 0, 8, false, 0, true, true,0,"8", false, 0,0x000000ff, false), | |
158 | HOWTO(RELOC_16, 0, 1, 16, false, 0, true, true,0,"16", false, 0,0x0000ffff, false), | |
159 | HOWTO(RELOC_32, 0, 2, 32, false, 0, true, true,0,"32", false, 0,0xffffffff, false), | |
160 | HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, false, true,0,"DISP8", false, 0,0x000000ff, false), | |
161 | HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, false, true,0,"DISP16", false, 0,0x0000ffff, false), | |
162 | HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, false, true,0,"DISP32", false, 0,0xffffffff, false), | |
163 | HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, false, true,0,"WDISP30", false, 0,0x3fffffff, false), | |
164 | HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, false, true,0,"WDISP22", false, 0,0x003fffff, false), | |
165 | HOWTO(RELOC_HI22, 10, 2, 22, false, 0, false, true,0,"HI22", false, 0,0x003fffff, false), | |
166 | HOWTO(RELOC_22, 0, 2, 22, false, 0, false, true,0,"22", false, 0,0x003fffff, false), | |
167 | HOWTO(RELOC_13, 0, 2, 13, false, 0, false, true,0,"13", false, 0,0x00001fff, false), | |
168 | HOWTO(RELOC_LO10, 0, 2, 10, false, 0, false, true,0,"LO10", false, 0,0x000003ff, false), | |
169 | HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, false, true,0,"SFA_BASE", false, 0,0xffffffff, false), | |
170 | HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, false, true,0,"SFA_OFF13",false, 0,0xffffffff, false), | |
171 | HOWTO(RELOC_BASE10, 0, 2, 16, false, 0, false, true,0,"BASE10", false, 0,0x0000ffff, false), | |
172 | HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, false, true,0,"BASE13", false, 0,0x00001fff, false), | |
173 | HOWTO(RELOC_BASE22, 0, 2, 0, false, 0, false, true,0,"BASE22", false, 0,0x00000000, false), | |
174 | HOWTO(RELOC_PC10, 0, 2, 10, false, 0, false, true,0,"PC10", false, 0,0x000003ff, false), | |
175 | HOWTO(RELOC_PC22, 0, 2, 22, false, 0, false, true,0,"PC22", false, 0,0x003fffff, false), | |
176 | HOWTO(RELOC_JMP_TBL,0, 2, 32, false, 0, false, true,0,"JMP_TBL", false, 0,0xffffffff, false), | |
177 | HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, false, true,0,"SEGOFF16", false, 0,0x00000000, false), | |
178 | HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, false, true,0,"GLOB_DAT", false, 0,0x00000000, false), | |
179 | HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, false, true,0,"JMP_SLOT", false, 0,0x00000000, false), | |
67c060c3 | 180 | HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, false, true,0,"RELATIVE", false, 0,0x00000000, false), |
7ed4093a SC |
181 | }; |
182 | ||
183 | /* Convert standard reloc records to "arelent" format (incl byte swap). */ | |
184 | ||
ce07dd7c | 185 | reloc_howto_type howto_table_std[] = { |
7ed4093a SC |
186 | /* type rs size bsz pcrel bitpos abs ovrf sf name part_inpl readmask setmask pcdone */ |
187 | HOWTO( 0, 0, 0, 8, false, 0, true, true,0,"8", true, 0x000000ff,0x000000ff, false), | |
188 | HOWTO( 1, 0, 1, 16, false, 0, true, true,0,"16", true, 0x0000ffff,0x0000ffff, false), | |
189 | HOWTO( 2, 0, 2, 32, false, 0, true, true,0,"32", true, 0xffffffff,0xffffffff, false), | |
190 | HOWTO( 3, 0, 3, 64, false, 0, true, true,0,"64", true, 0xdeaddead,0xdeaddead, false), | |
191 | HOWTO( 4, 0, 0, 8, true, 0, false, true,0,"DISP8", true, 0x000000ff,0x000000ff, false), | |
192 | HOWTO( 5, 0, 1, 16, true, 0, false, true,0,"DISP16", true, 0x0000ffff,0x0000ffff, false), | |
193 | HOWTO( 6, 0, 2, 32, true, 0, false, true,0,"DISP32", true, 0xffffffff,0xffffffff, false), | |
194 | HOWTO( 7, 0, 3, 64, true, 0, false, true,0,"DISP64", true, 0xfeedface,0xfeedface, false), | |
195 | }; | |
196 | ||
214f8f23 KR |
197 | CONST struct reloc_howto_struct * |
198 | DEFUN(NAME(aout,reloc_type_lookup),(abfd,code), | |
199 | bfd *abfd AND | |
200 | bfd_reloc_code_real_type code) | |
201 | { | |
202 | #define EXT(i,j) case i: return &howto_table_ext[j] | |
203 | #define STD(i,j) case i: return &howto_table_std[j] | |
204 | int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE; | |
205 | if (code == BFD_RELOC_CTOR) | |
206 | switch (bfd_get_arch_info (abfd)->bits_per_address) | |
207 | { | |
208 | case 32: | |
209 | code = BFD_RELOC_32; | |
210 | break; | |
211 | } | |
212 | if (ext) | |
213 | switch (code) | |
214 | { | |
215 | EXT (BFD_RELOC_32, 2); | |
216 | EXT (BFD_RELOC_HI22, 8); | |
217 | EXT (BFD_RELOC_LO10, 11); | |
218 | EXT (BFD_RELOC_32_PCREL_S2, 6); | |
219 | } | |
220 | else | |
221 | /* std relocs */ | |
222 | switch (code) | |
223 | { | |
224 | STD (BFD_RELOC_16, 1); | |
225 | STD (BFD_RELOC_32, 2); | |
226 | STD (BFD_RELOC_8_PCREL, 4); | |
227 | STD (BFD_RELOC_16_PCREL, 5); | |
228 | STD (BFD_RELOC_32_PCREL, 6); | |
229 | } | |
230 | return 0; | |
231 | } | |
7ed4093a | 232 | |
ce07dd7c | 233 | extern bfd_error_vector_type bfd_error_vector; |
6f715d66 | 234 | |
4e41b5aa SC |
235 | /* |
236 | SUBSECTION | |
237 | Internal Entry Points | |
238 | ||
239 | DESCRIPTION | |
240 | @code{aoutx.h} exports several routines for accessing the | |
241 | contents of an a.out file, which are gathered and exported in | |
242 | turn by various format specific files (eg sunos.c). | |
243 | ||
6f715d66 SC |
244 | */ |
245 | ||
4e41b5aa SC |
246 | /* |
247 | FUNCTION | |
248 | aout_<size>_swap_exec_header_in | |
249 | ||
250 | DESCRIPTION | |
251 | Swaps the information in an executable header taken from a raw | |
252 | byte stream memory image, into the internal exec_header | |
253 | structure. | |
254 | ||
fa2b89f1 | 255 | SYNOPSIS |
4e41b5aa SC |
256 | void aout_<size>_swap_exec_header_in, |
257 | (bfd *abfd, | |
258 | struct external_exec *raw_bytes, | |
259 | struct internal_exec *execp); | |
6f715d66 SC |
260 | */ |
261 | ||
7ed4093a SC |
262 | void |
263 | DEFUN(NAME(aout,swap_exec_header_in),(abfd, raw_bytes, execp), | |
264 | bfd *abfd AND | |
265 | struct external_exec *raw_bytes AND | |
266 | struct internal_exec *execp) | |
267 | { | |
268 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
269 | ||
55c0061e FF |
270 | /* The internal_exec structure has some fields that are unused in this |
271 | configuration (IE for i960), so ensure that all such uninitialized | |
272 | fields are zero'd out. There are places where two of these structs | |
273 | are memcmp'd, and thus the contents do matter. */ | |
274 | memset (execp, 0, sizeof (struct internal_exec)); | |
7ed4093a SC |
275 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
276 | execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); | |
277 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
278 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
279 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
280 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
281 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
282 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); | |
283 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
284 | } | |
285 | ||
4e41b5aa SC |
286 | /* |
287 | FUNCTION | |
288 | aout_<size>_swap_exec_header_out | |
289 | ||
290 | DESCRIPTION | |
291 | Swaps the information in an internal exec header structure | |
292 | into the supplied buffer ready for writing to disk. | |
293 | ||
fa2b89f1 | 294 | SYNOPSIS |
4e41b5aa | 295 | void aout_<size>_swap_exec_header_out |
6f715d66 SC |
296 | (bfd *abfd, |
297 | struct internal_exec *execp, | |
4e41b5aa | 298 | struct external_exec *raw_bytes); |
6f715d66 | 299 | */ |
7ed4093a SC |
300 | void |
301 | DEFUN(NAME(aout,swap_exec_header_out),(abfd, execp, raw_bytes), | |
302 | bfd *abfd AND | |
303 | struct internal_exec *execp AND | |
304 | struct external_exec *raw_bytes) | |
305 | { | |
306 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
307 | ||
308 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ | |
309 | bfd_h_put_32 (abfd, execp->a_info , bytes->e_info); | |
310 | PUT_WORD (abfd, execp->a_text , bytes->e_text); | |
311 | PUT_WORD (abfd, execp->a_data , bytes->e_data); | |
312 | PUT_WORD (abfd, execp->a_bss , bytes->e_bss); | |
313 | PUT_WORD (abfd, execp->a_syms , bytes->e_syms); | |
314 | PUT_WORD (abfd, execp->a_entry , bytes->e_entry); | |
315 | PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); | |
316 | PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); | |
317 | } | |
318 | ||
7ed4093a | 319 | |
6f715d66 | 320 | |
4e41b5aa SC |
321 | /* |
322 | FUNCTION | |
323 | aout_<size>_some_aout_object_p | |
6f715d66 | 324 | |
4e41b5aa SC |
325 | DESCRIPTION |
326 | Some A.OUT variant thinks that the file whose format we're | |
327 | checking is an a.out file. Do some more checking, and set up | |
328 | for access if it really is. Call back to the calling | |
329 | environments "finish up" function just before returning, to | |
330 | handle any last-minute setup. | |
6f715d66 | 331 | |
fa2b89f1 | 332 | SYNOPSIS |
4e41b5aa | 333 | bfd_target *aout_<size>_some_aout_object_p |
6f715d66 | 334 | (bfd *abfd, |
4e41b5aa | 335 | bfd_target *(*callback_to_real_object_p)()); |
6f715d66 | 336 | */ |
7ed4093a SC |
337 | |
338 | bfd_target * | |
7b02b4ed | 339 | DEFUN(NAME(aout,some_aout_object_p),(abfd, execp, callback_to_real_object_p), |
7ed4093a | 340 | bfd *abfd AND |
7b02b4ed | 341 | struct internal_exec *execp AND |
b86f998b | 342 | bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *))) |
7ed4093a | 343 | { |
214f8f23 | 344 | struct aout_data_struct *rawptr, *oldrawptr; |
e6e265ce | 345 | bfd_target *result; |
7ed4093a | 346 | |
6db82ea7 | 347 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (struct aout_data_struct )); |
7ed4093a SC |
348 | if (rawptr == NULL) { |
349 | bfd_error = no_memory; | |
350 | return 0; | |
351 | } | |
352 | ||
214f8f23 | 353 | oldrawptr = abfd->tdata.aout_data; |
6db82ea7 SC |
354 | abfd->tdata.aout_data = rawptr; |
355 | abfd->tdata.aout_data->a.hdr = &rawptr->e; | |
356 | *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */ | |
357 | execp = abfd->tdata.aout_data->a.hdr; | |
7ed4093a SC |
358 | |
359 | /* Set the file flags */ | |
360 | abfd->flags = NO_FLAGS; | |
361 | if (execp->a_drsize || execp->a_trsize) | |
362 | abfd->flags |= HAS_RELOC; | |
e6e265ce | 363 | /* Setting of EXEC_P has been deferred to the bottom of this function */ |
7ed4093a SC |
364 | if (execp->a_syms) |
365 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
366 | ||
ce07dd7c KR |
367 | if (N_MAGIC (*execp) == ZMAGIC) |
368 | { | |
369 | abfd->flags |= D_PAGED|WP_TEXT; | |
370 | adata(abfd).magic = z_magic; | |
371 | } | |
372 | else if (N_MAGIC (*execp) == NMAGIC) | |
373 | { | |
374 | abfd->flags |= WP_TEXT; | |
375 | adata(abfd).magic = n_magic; | |
376 | } | |
377 | else | |
378 | adata(abfd).magic = o_magic; | |
7ed4093a SC |
379 | |
380 | bfd_get_start_address (abfd) = execp->a_entry; | |
381 | ||
382 | obj_aout_symbols (abfd) = (aout_symbol_type *)NULL; | |
383 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); | |
384 | ||
7ed4093a SC |
385 | /* The default relocation entry size is that of traditional V7 Unix. */ |
386 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
387 | ||
7b02b4ed JG |
388 | /* The default symbol entry size is that of traditional Unix. */ |
389 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; | |
390 | ||
7ed4093a SC |
391 | /* create the sections. This is raunchy, but bfd_close wants to reclaim |
392 | them */ | |
6db82ea7 | 393 | |
214f8f23 KR |
394 | obj_textsec (abfd) = bfd_make_section_old_way (abfd, ".text"); |
395 | obj_datasec (abfd) = bfd_make_section_old_way (abfd, ".data"); | |
396 | obj_bsssec (abfd) = bfd_make_section_old_way (abfd, ".bss"); | |
397 | ||
398 | #if 0 | |
399 | (void)bfd_make_section (abfd, ".text"); | |
400 | (void)bfd_make_section (abfd, ".data"); | |
401 | (void)bfd_make_section (abfd, ".bss"); | |
402 | #endif | |
7ed4093a | 403 | |
6db82ea7 SC |
404 | obj_datasec (abfd)->_raw_size = execp->a_data; |
405 | obj_bsssec (abfd)->_raw_size = execp->a_bss; | |
7ed4093a | 406 | |
7ed4093a | 407 | obj_textsec (abfd)->flags = (execp->a_trsize != 0 ? |
d047d16a JG |
408 | (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) : |
409 | (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); | |
7ed4093a | 410 | obj_datasec (abfd)->flags = (execp->a_drsize != 0 ? |
d047d16a JG |
411 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) : |
412 | (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); | |
7ed4093a SC |
413 | obj_bsssec (abfd)->flags = SEC_ALLOC; |
414 | ||
415 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
98d43107 JG |
416 | /* The common code can't fill in these things because they depend |
417 | on either the start address of the text segment, the rounding | |
418 | up of virtual addersses between segments, or the starting file | |
419 | position of the text segment -- all of which varies among different | |
420 | versions of a.out. */ | |
421 | ||
7ed4093a SC |
422 | /* Call back to the format-dependent code to fill in the rest of the |
423 | fields and do any further cleanup. Things that should be filled | |
424 | in by the callback: */ | |
425 | ||
426 | struct exec *execp = exec_hdr (abfd); | |
427 | ||
98d43107 | 428 | obj_textsec (abfd)->size = N_TXTSIZE(*execp); |
6db82ea7 | 429 | obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp); |
98d43107 JG |
430 | /* data and bss are already filled in since they're so standard */ |
431 | ||
7ed4093a | 432 | /* The virtual memory addresses of the sections */ |
7ed4093a | 433 | obj_textsec (abfd)->vma = N_TXTADDR(*execp); |
98d43107 JG |
434 | obj_datasec (abfd)->vma = N_DATADDR(*execp); |
435 | obj_bsssec (abfd)->vma = N_BSSADDR(*execp); | |
7ed4093a SC |
436 | |
437 | /* The file offsets of the sections */ | |
438 | obj_textsec (abfd)->filepos = N_TXTOFF(*execp); | |
439 | obj_datasec (abfd)->filepos = N_DATOFF(*execp); | |
440 | ||
441 | /* The file offsets of the relocation info */ | |
442 | obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); | |
443 | obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); | |
444 | ||
445 | /* The file offsets of the string table and symbol table. */ | |
446 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
447 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
448 | ||
7ed4093a SC |
449 | /* Determine the architecture and machine type of the object file. */ |
450 | switch (N_MACHTYPE (*exec_hdr (abfd))) { | |
451 | default: | |
452 | abfd->obj_arch = bfd_arch_obscure; | |
453 | break; | |
454 | } | |
455 | ||
7b02b4ed JG |
456 | adata(abfd)->page_size = PAGE_SIZE; |
457 | adata(abfd)->segment_size = SEGMENT_SIZE; | |
458 | adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
459 | ||
7ed4093a SC |
460 | return abfd->xvec; |
461 | ||
462 | /* The architecture is encoded in various ways in various a.out variants, | |
463 | or is not encoded at all in some of them. The relocation size depends | |
464 | on the architecture and the a.out variant. Finally, the return value | |
465 | is the bfd_target vector in use. If an error occurs, return zero and | |
466 | set bfd_error to the appropriate error code. | |
467 | ||
468 | Formats such as b.out, which have additional fields in the a.out | |
469 | header, should cope with them in this callback as well. */ | |
470 | #endif /* DOCUMENTATION */ | |
471 | ||
e6e265ce JG |
472 | result = (*callback_to_real_object_p)(abfd); |
473 | ||
474 | /* Now that the segment addresses have been worked out, take a better | |
475 | guess at whether the file is executable. If the entry point | |
476 | is within the text segment, assume it is. (This makes files | |
477 | executable even if their entry point address is 0, as long as | |
478 | their text starts at zero.) | |
479 | ||
480 | At some point we should probably break down and stat the file and | |
481 | declare it executable if (one of) its 'x' bits are on... */ | |
482 | if ((execp->a_entry >= obj_textsec(abfd)->vma) && | |
6db82ea7 | 483 | (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size)) |
e6e265ce | 484 | abfd->flags |= EXEC_P; |
214f8f23 KR |
485 | if (result) |
486 | { | |
1f29e30b | 487 | #if 0 /* These should be set correctly anyways. */ |
214f8f23 KR |
488 | abfd->sections = obj_textsec (abfd); |
489 | obj_textsec (abfd)->next = obj_datasec (abfd); | |
490 | obj_datasec (abfd)->next = obj_bsssec (abfd); | |
1f29e30b | 491 | #endif |
214f8f23 KR |
492 | } |
493 | else | |
494 | { | |
495 | free (rawptr); | |
496 | abfd->tdata.aout_data = oldrawptr; | |
497 | } | |
e6e265ce | 498 | return result; |
7ed4093a SC |
499 | } |
500 | ||
4e41b5aa SC |
501 | /* |
502 | FUNCTION | |
503 | aout_<size>_mkobject | |
6f715d66 | 504 | |
4e41b5aa SC |
505 | DESCRIPTION |
506 | This routine initializes a BFD for use with a.out files. | |
6f715d66 | 507 | |
fa2b89f1 | 508 | SYNOPSIS |
4e41b5aa | 509 | boolean aout_<size>_mkobject, (bfd *); |
6f715d66 | 510 | */ |
7ed4093a SC |
511 | |
512 | boolean | |
513 | DEFUN(NAME(aout,mkobject),(abfd), | |
514 | bfd *abfd) | |
515 | { | |
6db82ea7 | 516 | struct aout_data_struct *rawptr; |
7ed4093a SC |
517 | |
518 | bfd_error = system_call_error; | |
519 | ||
520 | /* Use an intermediate variable for clarity */ | |
6db82ea7 | 521 | rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct )); |
7ed4093a SC |
522 | |
523 | if (rawptr == NULL) { | |
524 | bfd_error = no_memory; | |
525 | return false; | |
526 | } | |
527 | ||
6db82ea7 | 528 | abfd->tdata.aout_data = rawptr; |
7ed4093a SC |
529 | exec_hdr (abfd) = &(rawptr->e); |
530 | ||
531 | /* For simplicity's sake we just make all the sections right here. */ | |
532 | ||
533 | obj_textsec (abfd) = (asection *)NULL; | |
534 | obj_datasec (abfd) = (asection *)NULL; | |
535 | obj_bsssec (abfd) = (asection *)NULL; | |
536 | bfd_make_section (abfd, ".text"); | |
537 | bfd_make_section (abfd, ".data"); | |
538 | bfd_make_section (abfd, ".bss"); | |
6db82ea7 SC |
539 | bfd_make_section (abfd, BFD_ABS_SECTION_NAME); |
540 | bfd_make_section (abfd, BFD_UND_SECTION_NAME); | |
541 | bfd_make_section (abfd, BFD_COM_SECTION_NAME); | |
7ed4093a SC |
542 | |
543 | return true; | |
544 | } | |
545 | ||
6f715d66 | 546 | |
4e41b5aa SC |
547 | /* |
548 | FUNCTION | |
549 | aout_<size>_machine_type | |
6f715d66 | 550 | |
4e41b5aa SC |
551 | DESCRIPTION |
552 | Keep track of machine architecture and machine type for | |
553 | a.out's. Return the machine_type for a particular | |
554 | arch&machine, or M_UNKNOWN if that exact arch&machine can't be | |
555 | represented in a.out format. | |
7ed4093a | 556 | |
4e41b5aa SC |
557 | If the architecture is understood, machine type 0 (default) |
558 | should always be understood. | |
6f715d66 | 559 | |
fa2b89f1 | 560 | SYNOPSIS |
4e41b5aa | 561 | enum machine_type aout_<size>_machine_type |
6f715d66 SC |
562 | (enum bfd_architecture arch, |
563 | unsigned long machine)); | |
564 | */ | |
7ed4093a SC |
565 | |
566 | enum machine_type | |
567 | DEFUN(NAME(aout,machine_type),(arch, machine), | |
568 | enum bfd_architecture arch AND | |
569 | unsigned long machine) | |
570 | { | |
571 | enum machine_type arch_flags; | |
572 | ||
573 | arch_flags = M_UNKNOWN; | |
574 | ||
575 | switch (arch) { | |
576 | case bfd_arch_sparc: | |
577 | if (machine == 0) arch_flags = M_SPARC; | |
578 | break; | |
579 | ||
580 | case bfd_arch_m68k: | |
581 | switch (machine) { | |
582 | case 0: arch_flags = M_68010; break; | |
583 | case 68000: arch_flags = M_UNKNOWN; break; | |
584 | case 68010: arch_flags = M_68010; break; | |
585 | case 68020: arch_flags = M_68020; break; | |
586 | default: arch_flags = M_UNKNOWN; break; | |
587 | } | |
588 | break; | |
589 | ||
590 | case bfd_arch_i386: | |
591 | if (machine == 0) arch_flags = M_386; | |
592 | break; | |
593 | ||
594 | case bfd_arch_a29k: | |
595 | if (machine == 0) arch_flags = M_29K; | |
596 | break; | |
597 | ||
5cd3dcff KR |
598 | case bfd_arch_mips: |
599 | switch (machine) { | |
600 | case 0: | |
601 | case 2000: | |
602 | case 3000: arch_flags = M_MIPS1; break; | |
603 | case 4000: | |
604 | case 4400: | |
605 | case 6000: arch_flags = M_MIPS2; break; | |
606 | default: arch_flags = M_UNKNOWN; break; | |
607 | } | |
608 | break; | |
609 | ||
7ed4093a SC |
610 | default: |
611 | arch_flags = M_UNKNOWN; | |
7ed4093a SC |
612 | } |
613 | return arch_flags; | |
614 | } | |
615 | ||
9e2dad8e | 616 | |
4e41b5aa SC |
617 | /* |
618 | FUNCTION | |
619 | aout_<size>_set_arch_mach | |
6f715d66 | 620 | |
4e41b5aa SC |
621 | DESCRIPTION |
622 | Sets the architecture and the machine of the BFD to those | |
623 | values supplied. Verifies that the format can support the | |
624 | architecture required. | |
6f715d66 | 625 | |
fa2b89f1 | 626 | SYNOPSIS |
4e41b5aa | 627 | boolean aout_<size>_set_arch_mach, |
6f715d66 SC |
628 | (bfd *, |
629 | enum bfd_architecture, | |
630 | unsigned long machine)); | |
631 | */ | |
632 | ||
7ed4093a SC |
633 | boolean |
634 | DEFUN(NAME(aout,set_arch_mach),(abfd, arch, machine), | |
635 | bfd *abfd AND | |
636 | enum bfd_architecture arch AND | |
637 | unsigned long machine) | |
638 | { | |
9e2dad8e | 639 | bfd_default_set_arch_mach(abfd, arch, machine); |
7ed4093a SC |
640 | if (arch != bfd_arch_unknown && |
641 | NAME(aout,machine_type) (arch, machine) == M_UNKNOWN) | |
642 | return false; /* We can't represent this type */ | |
ce07dd7c | 643 | |
214f8f23 KR |
644 | /* Determine the size of a relocation entry */ |
645 | switch (arch) { | |
646 | case bfd_arch_sparc: | |
647 | case bfd_arch_a29k: | |
5cd3dcff | 648 | case bfd_arch_mips: |
214f8f23 KR |
649 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; |
650 | break; | |
651 | default: | |
652 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
653 | break; | |
654 | } | |
655 | ||
2768b3f7 | 656 | return (*aout_backend_info(abfd)->set_sizes) (abfd); |
7ed4093a | 657 | } |
7ed4093a | 658 | |
ce07dd7c KR |
659 | boolean |
660 | DEFUN (NAME (aout,adjust_sizes_and_vmas), (abfd, text_size, text_end), | |
661 | bfd *abfd AND bfd_size_type *text_size AND file_ptr *text_end) | |
662 | { | |
663 | struct internal_exec *execp = exec_hdr (abfd); | |
664 | if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL)) | |
665 | { | |
666 | bfd_error = invalid_operation; | |
667 | return false; | |
668 | } | |
669 | if (adata(abfd).magic != undecided_magic) return true; | |
670 | obj_textsec(abfd)->_raw_size = | |
671 | align_power(obj_textsec(abfd)->_raw_size, | |
672 | obj_textsec(abfd)->alignment_power); | |
673 | ||
674 | *text_size = obj_textsec (abfd)->_raw_size; | |
675 | /* Rule (heuristic) for when to pad to a new page. Note that there | |
676 | * are (at least) two ways demand-paged (ZMAGIC) files have been | |
677 | * handled. Most Berkeley-based systems start the text segment at | |
678 | * (PAGE_SIZE). However, newer versions of SUNOS start the text | |
679 | * segment right after the exec header; the latter is counted in the | |
680 | * text segment size, and is paged in by the kernel with the rest of | |
681 | * the text. */ | |
682 | ||
683 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
684 | to understand enough to implement it. Better would probably be to go | |
685 | right from BFD flags to alignment/positioning characteristics. But the | |
686 | old code was sloppy enough about handling the flags, and had enough | |
687 | other magic, that it was a little hard for me to understand. I think | |
688 | I understand it better now, but I haven't time to do the cleanup this | |
689 | minute. */ | |
690 | if (adata(abfd).magic == undecided_magic) | |
691 | { | |
692 | if (abfd->flags & D_PAGED) | |
693 | /* whether or not WP_TEXT is set */ | |
694 | adata(abfd).magic = z_magic; | |
695 | else if (abfd->flags & WP_TEXT) | |
696 | adata(abfd).magic = n_magic; | |
697 | else | |
698 | adata(abfd).magic = o_magic; | |
699 | } | |
700 | ||
701 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
702 | #if __GNUC__ >= 2 | |
703 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
704 | ({ char *str; | |
705 | switch (adata(abfd).magic) { | |
706 | case n_magic: str = "NMAGIC"; break; | |
707 | case o_magic: str = "OMAGIC"; break; | |
708 | case z_magic: str = "ZMAGIC"; break; | |
709 | default: abort (); | |
710 | } | |
711 | str; | |
712 | }), | |
713 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, obj_textsec(abfd)->alignment_power, | |
714 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, obj_datasec(abfd)->alignment_power, | |
715 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size, obj_bsssec(abfd)->alignment_power); | |
716 | #endif | |
717 | #endif | |
718 | ||
719 | switch (adata(abfd).magic) | |
720 | { | |
721 | case o_magic: | |
722 | { | |
723 | file_ptr pos = adata (abfd).exec_bytes_size; | |
724 | bfd_vma vma = 0; | |
214f8f23 | 725 | int pad = 0; |
ce07dd7c KR |
726 | |
727 | obj_textsec(abfd)->filepos = pos; | |
728 | pos += obj_textsec(abfd)->_raw_size; | |
729 | vma += obj_textsec(abfd)->_raw_size; | |
730 | if (!obj_datasec(abfd)->user_set_vma) | |
731 | { | |
214f8f23 | 732 | #if 0 /* ?? Does alignment in the file image really matter? */ |
ce07dd7c | 733 | pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma; |
214f8f23 | 734 | #endif |
ce07dd7c KR |
735 | obj_textsec(abfd)->_raw_size += pad; |
736 | pos += pad; | |
737 | vma += pad; | |
738 | obj_datasec(abfd)->vma = vma; | |
739 | } | |
740 | obj_datasec(abfd)->filepos = pos; | |
741 | pos += obj_datasec(abfd)->_raw_size; | |
742 | vma += obj_datasec(abfd)->_raw_size; | |
743 | if (!obj_bsssec(abfd)->user_set_vma) | |
744 | { | |
214f8f23 | 745 | #if 0 |
ce07dd7c | 746 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; |
214f8f23 | 747 | #endif |
ce07dd7c KR |
748 | obj_datasec(abfd)->_raw_size += pad; |
749 | pos += pad; | |
750 | vma += pad; | |
751 | obj_bsssec(abfd)->vma = vma; | |
752 | } | |
753 | obj_bsssec(abfd)->filepos = pos; | |
754 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
755 | execp->a_data = obj_datasec(abfd)->_raw_size; | |
756 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
757 | N_SET_MAGIC (*execp, OMAGIC); | |
758 | } | |
759 | break; | |
760 | case z_magic: | |
761 | { | |
762 | bfd_size_type data_pad, text_pad; | |
763 | file_ptr text_end; | |
764 | CONST struct aout_backend_data *abdp; | |
765 | int ztih; | |
766 | bfd_vma data_vma; | |
767 | ||
768 | abdp = aout_backend_info (abfd); | |
769 | ztih = abdp && abdp->text_includes_header; | |
770 | obj_textsec(abfd)->filepos = (ztih | |
771 | ? adata(abfd).exec_bytes_size | |
772 | : adata(abfd).page_size); | |
773 | if (! obj_textsec(abfd)->user_set_vma) | |
774 | /* ?? Do we really need to check for relocs here? */ | |
775 | obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC) | |
776 | ? 0 | |
777 | : (ztih | |
778 | ? (abdp->default_text_vma | |
779 | + adata(abfd).exec_bytes_size) | |
780 | : abdp->default_text_vma)); | |
781 | /* Could take strange alignment of text section into account here? */ | |
782 | ||
783 | /* Find start of data. */ | |
784 | text_end = obj_textsec(abfd)->filepos + obj_textsec(abfd)->_raw_size; | |
785 | text_pad = BFD_ALIGN (text_end, adata(abfd).page_size) - text_end; | |
786 | obj_textsec(abfd)->_raw_size += text_pad; | |
787 | text_end += text_pad; | |
788 | ||
789 | if (!obj_datasec(abfd)->user_set_vma) | |
790 | { | |
791 | bfd_vma vma; | |
792 | vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size; | |
793 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
794 | } | |
795 | data_vma = obj_datasec(abfd)->vma; | |
796 | if (abdp && abdp->zmagic_mapped_contiguous) | |
797 | { | |
798 | text_pad = (obj_datasec(abfd)->vma | |
799 | - obj_textsec(abfd)->vma | |
800 | - obj_textsec(abfd)->_raw_size); | |
801 | obj_textsec(abfd)->_raw_size += text_pad; | |
802 | } | |
803 | obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos | |
804 | + obj_textsec(abfd)->_raw_size); | |
805 | ||
806 | /* Fix up exec header while we're at it. */ | |
807 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
7f90aa8b | 808 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) |
ce07dd7c KR |
809 | execp->a_text += adata(abfd).exec_bytes_size; |
810 | N_SET_MAGIC (*execp, ZMAGIC); | |
811 | /* Spec says data section should be rounded up to page boundary. */ | |
812 | /* If extra space in page is left after data section, fudge data | |
813 | in the header so that the bss section looks smaller by that | |
814 | amount. We'll start the bss section there, and lie to the OS. */ | |
815 | obj_datasec(abfd)->_raw_size | |
816 | = align_power (obj_datasec(abfd)->_raw_size, | |
817 | obj_bsssec(abfd)->alignment_power); | |
818 | execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size, | |
819 | adata(abfd).page_size); | |
820 | data_pad = execp->a_data - obj_datasec(abfd)->_raw_size; | |
821 | /* This code is almost surely botched. It'll only get tested | |
822 | for the case where the application does explicitly set the VMA | |
823 | of the BSS section. */ | |
824 | if (obj_bsssec(abfd)->user_set_vma | |
825 | && (obj_bsssec(abfd)->vma | |
826 | > BFD_ALIGN (obj_datasec(abfd)->vma | |
827 | + obj_datasec(abfd)->_raw_size, | |
828 | adata(abfd).page_size))) | |
829 | { | |
830 | /* Can't play with squeezing into data pages; fix this code. */ | |
831 | abort (); | |
832 | } | |
833 | if (!obj_bsssec(abfd)->user_set_vma) | |
834 | obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma | |
835 | + obj_datasec(abfd)->_raw_size); | |
836 | if (data_pad > obj_bsssec(abfd)->_raw_size) | |
837 | execp->a_bss = 0; | |
838 | else | |
839 | execp->a_bss = obj_bsssec(abfd)->_raw_size - data_pad; | |
840 | } | |
841 | break; | |
842 | case n_magic: | |
843 | { | |
ce07dd7c KR |
844 | file_ptr pos = adata(abfd).exec_bytes_size; |
845 | bfd_vma vma = 0; | |
846 | int pad; | |
847 | ||
848 | obj_textsec(abfd)->filepos = pos; | |
849 | if (!obj_textsec(abfd)->user_set_vma) | |
850 | obj_textsec(abfd)->vma = vma; | |
851 | else | |
852 | vma = obj_textsec(abfd)->vma; | |
853 | pos += obj_textsec(abfd)->_raw_size; | |
854 | vma += obj_textsec(abfd)->_raw_size; | |
855 | obj_datasec(abfd)->filepos = pos; | |
856 | if (!obj_datasec(abfd)->user_set_vma) | |
857 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
858 | vma = obj_datasec(abfd)->vma; | |
859 | ||
860 | /* Since BSS follows data immediately, see if it needs alignment. */ | |
861 | vma += obj_datasec(abfd)->_raw_size; | |
862 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; | |
863 | obj_datasec(abfd)->_raw_size += pad; | |
864 | pos += obj_datasec(abfd)->_raw_size; | |
865 | ||
866 | if (!obj_bsssec(abfd)->user_set_vma) | |
867 | obj_bsssec(abfd)->vma = vma; | |
868 | else | |
869 | vma = obj_bsssec(abfd)->vma; | |
870 | } | |
871 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
872 | execp->a_data = obj_datasec(abfd)->_raw_size; | |
873 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
874 | N_SET_MAGIC (*execp, NMAGIC); | |
875 | break; | |
876 | default: | |
877 | abort (); | |
878 | } | |
879 | #ifdef BFD_AOUT_DEBUG | |
880 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
881 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, obj_textsec(abfd)->filepos, | |
882 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, obj_datasec(abfd)->filepos, | |
883 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size); | |
884 | #endif | |
d047d16a | 885 | return true; |
ce07dd7c KR |
886 | } |
887 | ||
4e41b5aa SC |
888 | /* |
889 | FUNCTION | |
fa2b89f1 | 890 | aout_<size>_new_section_hook |
9e2dad8e | 891 | |
4e41b5aa SC |
892 | DESCRIPTION |
893 | Called by the BFD in response to a @code{bfd_make_section} | |
894 | request. | |
895 | ||
fa2b89f1 | 896 | SYNOPSIS |
4e41b5aa | 897 | boolean aout_<size>_new_section_hook, |
9e2dad8e JG |
898 | (bfd *abfd, |
899 | asection *newsect)); | |
6f715d66 | 900 | */ |
7ed4093a | 901 | boolean |
3f7607af | 902 | DEFUN(NAME(aout,new_section_hook),(abfd, newsect), |
9e2dad8e JG |
903 | bfd *abfd AND |
904 | asection *newsect) | |
7ed4093a | 905 | { |
6db82ea7 SC |
906 | /* align to double at least */ |
907 | newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; | |
3f7607af | 908 | |
7ed4093a | 909 | |
6db82ea7 SC |
910 | if (bfd_get_format (abfd) == bfd_object) |
911 | { | |
912 | if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) { | |
913 | obj_textsec(abfd)= newsect; | |
914 | newsect->target_index = N_TEXT | N_EXT; | |
915 | return true; | |
916 | } | |
7ed4093a | 917 | |
6db82ea7 SC |
918 | if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) { |
919 | obj_datasec(abfd) = newsect; | |
920 | newsect->target_index = N_DATA | N_EXT; | |
921 | return true; | |
922 | } | |
7ed4093a | 923 | |
6db82ea7 SC |
924 | if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) { |
925 | obj_bsssec(abfd) = newsect; | |
926 | newsect->target_index = N_BSS | N_EXT; | |
927 | return true; | |
928 | } | |
929 | ||
930 | } | |
7ed4093a | 931 | |
6db82ea7 SC |
932 | /* We allow more than three sections internally */ |
933 | return true; | |
7ed4093a SC |
934 | } |
935 | ||
936 | boolean | |
9e2dad8e JG |
937 | DEFUN(NAME(aout,set_section_contents),(abfd, section, location, offset, count), |
938 | bfd *abfd AND | |
939 | sec_ptr section AND | |
940 | PTR location AND | |
941 | file_ptr offset AND | |
942 | bfd_size_type count) | |
7ed4093a | 943 | { |
7b02b4ed | 944 | file_ptr text_end; |
7b02b4ed | 945 | bfd_size_type text_size; |
ce07dd7c | 946 | |
7ed4093a | 947 | if (abfd->output_has_begun == false) |
9e2dad8e JG |
948 | { /* set by bfd.c handler */ |
949 | switch (abfd->direction) | |
950 | { | |
951 | case read_direction: | |
952 | case no_direction: | |
953 | bfd_error = invalid_operation; | |
954 | return false; | |
ce07dd7c KR |
955 | |
956 | case write_direction: | |
957 | if (NAME(aout,adjust_sizes_and_vmas) (abfd, | |
958 | &text_size, | |
959 | &text_end) == false) | |
960 | return false; | |
9e2dad8e JG |
961 | case both_direction: |
962 | break; | |
12e7087f | 963 | } |
9e2dad8e | 964 | } |
12e7087f | 965 | |
7ed4093a SC |
966 | /* regardless, once we know what we're doing, we might as well get going */ |
967 | if (section != obj_bsssec(abfd)) | |
968 | { | |
969 | bfd_seek (abfd, section->filepos + offset, SEEK_SET); | |
9e2dad8e | 970 | |
7ed4093a SC |
971 | if (count) { |
972 | return (bfd_write ((PTR)location, 1, count, abfd) == count) ? | |
973 | true : false; | |
974 | } | |
6db82ea7 | 975 | return true; |
7ed4093a SC |
976 | } |
977 | return true; | |
978 | } | |
979 | \f | |
980 | /* Classify stabs symbols */ | |
981 | ||
982 | #define sym_in_text_section(sym) \ | |
9e2dad8e | 983 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_TEXT) |
7ed4093a SC |
984 | |
985 | #define sym_in_data_section(sym) \ | |
9e2dad8e | 986 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_DATA) |
7ed4093a SC |
987 | |
988 | #define sym_in_bss_section(sym) \ | |
9e2dad8e | 989 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_BSS) |
7ed4093a SC |
990 | |
991 | /* Symbol is undefined if type is N_UNDF|N_EXT and if it has | |
9e2dad8e JG |
992 | zero in the "value" field. Nonzeroes there are fortrancommon |
993 | symbols. */ | |
7ed4093a | 994 | #define sym_is_undefined(sym) \ |
9e2dad8e | 995 | ((sym)->type == (N_UNDF | N_EXT) && (sym)->symbol.value == 0) |
7ed4093a SC |
996 | |
997 | /* Symbol is a global definition if N_EXT is on and if it has | |
9e2dad8e | 998 | a nonzero type field. */ |
7ed4093a | 999 | #define sym_is_global_defn(sym) \ |
9e2dad8e | 1000 | (((sym)->type & N_EXT) && (sym)->type & N_TYPE) |
7ed4093a SC |
1001 | |
1002 | /* Symbol is debugger info if any bits outside N_TYPE or N_EXT | |
9e2dad8e | 1003 | are on. */ |
7ed4093a | 1004 | #define sym_is_debugger_info(sym) \ |
9e2dad8e | 1005 | ((sym)->type & ~(N_EXT | N_TYPE)) |
7ed4093a SC |
1006 | |
1007 | #define sym_is_fortrancommon(sym) \ | |
9e2dad8e | 1008 | (((sym)->type == (N_EXT)) && (sym)->symbol.value != 0) |
7ed4093a SC |
1009 | |
1010 | /* Symbol is absolute if it has N_ABS set */ | |
1011 | #define sym_is_absolute(sym) \ | |
9e2dad8e | 1012 | (((sym)->type & N_TYPE)== N_ABS) |
7ed4093a SC |
1013 | |
1014 | ||
1015 | #define sym_is_indirect(sym) \ | |
9e2dad8e | 1016 | (((sym)->type & N_ABS)== N_ABS) |
7ed4093a SC |
1017 | |
1018 | /* Only in their own functions for ease of debugging; when sym flags have | |
9e2dad8e JG |
1019 | stabilised these should be inlined into their (single) caller */ |
1020 | ||
7ed4093a SC |
1021 | static void |
1022 | DEFUN(translate_from_native_sym_flags,(sym_pointer, cache_ptr, abfd), | |
4e41b5aa SC |
1023 | struct external_nlist *sym_pointer AND |
1024 | aout_symbol_type *cache_ptr AND | |
1025 | bfd *abfd) | |
9e2dad8e | 1026 | { |
6db82ea7 SC |
1027 | switch (cache_ptr->type & N_TYPE) |
1028 | { | |
9e2dad8e JG |
1029 | case N_SETA: |
1030 | case N_SETT: | |
1031 | case N_SETD: | |
1032 | case N_SETB: | |
6db82ea7 SC |
1033 | { |
1034 | char *copy = bfd_alloc(abfd, strlen(cache_ptr->symbol.name)+1); | |
1035 | asection *section ; | |
1036 | asection *into_section; | |
1037 | ||
1038 | arelent_chain *reloc = (arelent_chain *)bfd_alloc(abfd, sizeof(arelent_chain)); | |
1039 | strcpy(copy, cache_ptr->symbol.name); | |
1040 | ||
1041 | /* Make sure that this bfd has a section with the right contructor | |
1042 | name */ | |
1043 | section = bfd_get_section_by_name (abfd, copy); | |
1044 | if (!section) | |
1045 | section = bfd_make_section(abfd,copy); | |
1046 | ||
1047 | /* Build a relocation entry for the constructor */ | |
1048 | switch ( (cache_ptr->type & N_TYPE) ) | |
1049 | { | |
1050 | case N_SETA: | |
1051 | into_section = &bfd_abs_section; | |
1052 | break; | |
1053 | case N_SETT: | |
1054 | into_section = (asection *)obj_textsec(abfd); | |
1055 | break; | |
1056 | case N_SETD: | |
1057 | into_section = (asection *)obj_datasec(abfd); | |
1058 | break; | |
1059 | case N_SETB: | |
1060 | into_section = (asection *)obj_bsssec(abfd); | |
1061 | break; | |
1062 | default: | |
1063 | abort(); | |
1064 | } | |
1065 | ||
1066 | /* Build a relocation pointing into the constuctor section | |
1067 | pointing at the symbol in the set vector specified */ | |
1068 | ||
1069 | reloc->relent.addend = cache_ptr->symbol.value; | |
1070 | cache_ptr->symbol.section = into_section->symbol->section; | |
1071 | reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr; | |
1072 | ||
c618de01 | 1073 | |
6db82ea7 SC |
1074 | /* We modify the symbol to belong to a section depending upon the |
1075 | name of the symbol - probably __CTOR__ or __DTOR__ but we don't | |
1076 | really care, and add to the size of the section to contain a | |
1077 | pointer to the symbol. Build a reloc entry to relocate to this | |
1078 | symbol attached to this section. */ | |
c618de01 | 1079 | |
6db82ea7 SC |
1080 | section->flags = SEC_CONSTRUCTOR; |
1081 | ||
c618de01 | 1082 | |
6db82ea7 SC |
1083 | section->reloc_count++; |
1084 | section->alignment_power = 2; | |
1085 | ||
1086 | reloc->next = section->constructor_chain; | |
1087 | section->constructor_chain = reloc; | |
1088 | reloc->relent.address = section->_raw_size; | |
1089 | section->_raw_size += sizeof(int *); | |
1090 | ||
1091 | reloc->relent.howto = howto_table_ext + CTOR_TABLE_RELOC_IDX; | |
1092 | cache_ptr->symbol.flags |= BSF_DEBUGGING | BSF_CONSTRUCTOR; | |
1093 | } | |
9e2dad8e | 1094 | break; |
7ed4093a | 1095 | default: |
88dfcd68 | 1096 | if (cache_ptr->type == N_WARNING) |
6db82ea7 SC |
1097 | { |
1098 | /* This symbol is the text of a warning message, the next symbol | |
1099 | is the symbol to associate the warning with */ | |
1100 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
88dfcd68 | 1101 | cache_ptr->symbol.value = (bfd_vma)((cache_ptr+1)); |
6db82ea7 SC |
1102 | /* We furgle with the next symbol in place. We don't want it to be undefined, we'll trample the type */ |
1103 | (sym_pointer+1)->e_type[0] = 0xff; | |
88dfcd68 SC |
1104 | break; |
1105 | } | |
6db82ea7 SC |
1106 | if ((cache_ptr->type | N_EXT) == (N_INDR | N_EXT)) { |
1107 | /* Two symbols in a row for an INDR message. The first symbol | |
1108 | contains the name we will match, the second symbol contains the | |
1109 | name the first name is translated into. It is supplied to us | |
1110 | undefined. This is good, since we want to pull in any files which | |
1111 | define it */ | |
1112 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT; | |
1113 | cache_ptr->symbol.value = (bfd_vma)((cache_ptr+1)); | |
1114 | cache_ptr->symbol.section = &bfd_und_section; | |
1115 | break; | |
1116 | } | |
88dfcd68 SC |
1117 | |
1118 | ||
7ed4093a | 1119 | if (sym_is_debugger_info (cache_ptr)) { |
6db82ea7 SC |
1120 | cache_ptr->symbol.flags = BSF_DEBUGGING ; |
1121 | /* Work out the section correct for this symbol */ | |
1122 | switch (cache_ptr->type & N_TYPE) | |
1123 | { | |
1124 | case N_TEXT: | |
1125 | case N_FN: | |
1126 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1127 | cache_ptr->symbol.value -= obj_textsec(abfd)->vma; | |
1128 | break; | |
1129 | case N_DATA: | |
1130 | cache_ptr->symbol.value -= obj_datasec(abfd)->vma; | |
1131 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1132 | break; | |
1133 | case N_BSS : | |
1134 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1135 | cache_ptr->symbol.value -= obj_bsssec(abfd)->vma; | |
1136 | break; | |
1137 | default: | |
1138 | case N_ABS: | |
88dfcd68 | 1139 | |
6db82ea7 SC |
1140 | cache_ptr->symbol.section = &bfd_abs_section; |
1141 | break; | |
7ed4093a | 1142 | } |
6db82ea7 SC |
1143 | } |
1144 | else { | |
1145 | ||
1146 | if (sym_is_fortrancommon (cache_ptr)) | |
1147 | { | |
1148 | cache_ptr->symbol.flags = 0; | |
1149 | cache_ptr->symbol.section = &bfd_com_section; | |
7ed4093a SC |
1150 | } |
1151 | else { | |
6db82ea7 SC |
1152 | |
1153 | ||
1154 | } | |
88dfcd68 | 1155 | |
7ed4093a SC |
1156 | /* In a.out, the value of a symbol is always relative to the |
1157 | * start of the file, if this is a data symbol we'll subtract | |
1158 | * the size of the text section to get the section relative | |
1159 | * value. If this is a bss symbol (which would be strange) | |
1160 | * we'll subtract the size of the previous two sections | |
1161 | * to find the section relative address. | |
1162 | */ | |
88dfcd68 | 1163 | |
7ed4093a | 1164 | if (sym_in_text_section (cache_ptr)) { |
6db82ea7 SC |
1165 | cache_ptr->symbol.value -= obj_textsec(abfd)->vma; |
1166 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1167 | } | |
7ed4093a | 1168 | else if (sym_in_data_section (cache_ptr)){ |
6db82ea7 SC |
1169 | cache_ptr->symbol.value -= obj_datasec(abfd)->vma; |
1170 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1171 | } | |
7ed4093a | 1172 | else if (sym_in_bss_section(cache_ptr)) { |
6db82ea7 SC |
1173 | cache_ptr->symbol.section = obj_bsssec (abfd); |
1174 | cache_ptr->symbol.value -= obj_bsssec(abfd)->vma; | |
1175 | } | |
1176 | else if (sym_is_undefined (cache_ptr)) { | |
1177 | cache_ptr->symbol.flags = 0; | |
1178 | cache_ptr->symbol.section = &bfd_und_section; | |
1179 | } | |
1180 | else if (sym_is_absolute(cache_ptr)) | |
1181 | { | |
1182 | cache_ptr->symbol.section = &bfd_abs_section; | |
7ed4093a | 1183 | } |
6db82ea7 SC |
1184 | |
1185 | if (sym_is_global_defn (cache_ptr)) | |
1186 | { | |
1187 | cache_ptr->symbol.flags = BSF_GLOBAL | BSF_EXPORT; | |
1188 | } | |
1189 | else | |
1190 | { | |
1191 | cache_ptr->symbol.flags = BSF_LOCAL; | |
7ed4093a SC |
1192 | } |
1193 | } | |
7ed4093a SC |
1194 | } |
1195 | } | |
1196 | ||
6db82ea7 SC |
1197 | |
1198 | ||
7ed4093a SC |
1199 | static void |
1200 | DEFUN(translate_to_native_sym_flags,(sym_pointer, cache_ptr, abfd), | |
1201 | struct external_nlist *sym_pointer AND | |
1202 | asymbol *cache_ptr AND | |
1203 | bfd *abfd) | |
1204 | { | |
1205 | bfd_vma value = cache_ptr->value; | |
1206 | ||
10dea9ed DHW |
1207 | /* mask out any existing type bits in case copying from one section |
1208 | to another */ | |
1209 | sym_pointer->e_type[0] &= ~N_TYPE; | |
1210 | ||
6db82ea7 | 1211 | if (bfd_get_output_section(cache_ptr) == obj_bsssec (abfd)) { |
7ed4093a SC |
1212 | sym_pointer->e_type[0] |= N_BSS; |
1213 | } | |
6db82ea7 | 1214 | else if (bfd_get_output_section(cache_ptr) == obj_datasec (abfd)) { |
7ed4093a SC |
1215 | sym_pointer->e_type[0] |= N_DATA; |
1216 | } | |
6db82ea7 | 1217 | else if (bfd_get_output_section(cache_ptr) == obj_textsec (abfd)) { |
7ed4093a SC |
1218 | sym_pointer->e_type[0] |= N_TEXT; |
1219 | } | |
6db82ea7 SC |
1220 | else if (bfd_get_output_section(cache_ptr) == &bfd_abs_section) |
1221 | { | |
7ed4093a SC |
1222 | sym_pointer->e_type[0] |= N_ABS; |
1223 | } | |
6db82ea7 SC |
1224 | else if (bfd_get_output_section(cache_ptr) == &bfd_und_section) |
1225 | { | |
7ed4093a SC |
1226 | sym_pointer->e_type[0] = (N_UNDF | N_EXT); |
1227 | } | |
382f2a3d | 1228 | else if (bfd_is_com_section (bfd_get_output_section (cache_ptr))) { |
6db82ea7 SC |
1229 | sym_pointer->e_type[0] = (N_UNDF | N_EXT); |
1230 | } | |
1231 | else { | |
e7b4046c SC |
1232 | if (cache_ptr->section->output_section) |
1233 | { | |
1234 | ||
1235 | bfd_error_vector.nonrepresentable_section(abfd, | |
1236 | bfd_get_output_section(cache_ptr)->name); | |
1237 | } | |
1238 | else | |
1239 | { | |
1240 | bfd_error_vector.nonrepresentable_section(abfd, | |
1241 | cache_ptr->section->name); | |
1242 | ||
1243 | } | |
1244 | ||
7ed4093a | 1245 | } |
6db82ea7 | 1246 | /* Turn the symbol from section relative to absolute again */ |
7ed4093a | 1247 | |
6db82ea7 SC |
1248 | value += cache_ptr->section->output_section->vma + cache_ptr->section->output_offset ; |
1249 | ||
1250 | ||
1251 | if (cache_ptr->flags & (BSF_WARNING)) { | |
1252 | (sym_pointer+1)->e_type[0] = 1; | |
1253 | } | |
1254 | ||
1255 | if (cache_ptr->flags & (BSF_GLOBAL | BSF_EXPORT)) { | |
7ed4093a SC |
1256 | sym_pointer->e_type[0] |= N_EXT; |
1257 | } | |
6db82ea7 | 1258 | if (cache_ptr->flags & BSF_DEBUGGING) { |
7ed4093a SC |
1259 | sym_pointer->e_type [0]= ((aout_symbol_type *)cache_ptr)->type; |
1260 | } | |
6db82ea7 | 1261 | |
7ed4093a SC |
1262 | PUT_WORD(abfd, value, sym_pointer->e_value); |
1263 | } | |
1264 | \f | |
1265 | /* Native-level interface to symbols. */ | |
1266 | ||
1267 | /* We read the symbols into a buffer, which is discarded when this | |
1268 | function exits. We read the strings into a buffer large enough to | |
1269 | hold them all plus all the cached symbol entries. */ | |
1270 | ||
1271 | asymbol * | |
1272 | DEFUN(NAME(aout,make_empty_symbol),(abfd), | |
1273 | bfd *abfd) | |
9e2dad8e JG |
1274 | { |
1275 | aout_symbol_type *new = | |
1276 | (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type)); | |
1277 | new->symbol.the_bfd = abfd; | |
fa2b89f1 | 1278 | |
9e2dad8e JG |
1279 | return &new->symbol; |
1280 | } | |
7ed4093a SC |
1281 | |
1282 | boolean | |
1283 | DEFUN(NAME(aout,slurp_symbol_table),(abfd), | |
1284 | bfd *abfd) | |
9e2dad8e JG |
1285 | { |
1286 | bfd_size_type symbol_size; | |
1287 | bfd_size_type string_size; | |
1288 | unsigned char string_chars[BYTES_IN_WORD]; | |
1289 | struct external_nlist *syms; | |
1290 | char *strings; | |
1291 | aout_symbol_type *cached; | |
7ed4093a | 1292 | |
9e2dad8e JG |
1293 | /* If there's no work to be done, don't do any */ |
1294 | if (obj_aout_symbols (abfd) != (aout_symbol_type *)NULL) return true; | |
1295 | symbol_size = exec_hdr(abfd)->a_syms; | |
1296 | if (symbol_size == 0) { | |
1297 | bfd_error = no_symbols; | |
1298 | return false; | |
1299 | } | |
7ed4093a | 1300 | |
9e2dad8e JG |
1301 | bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET); |
1302 | if (bfd_read ((PTR)string_chars, BYTES_IN_WORD, 1, abfd) != BYTES_IN_WORD) | |
1303 | return false; | |
1304 | string_size = GET_WORD (abfd, string_chars); | |
7ed4093a | 1305 | |
9e2dad8e JG |
1306 | strings =(char *) bfd_alloc(abfd, string_size + 1); |
1307 | cached = (aout_symbol_type *) | |
1308 | bfd_zalloc(abfd, (bfd_size_type)(bfd_get_symcount (abfd) * sizeof(aout_symbol_type))); | |
1309 | ||
1310 | /* malloc this, so we can free it if simply. The symbol caching | |
1311 | might want to allocate onto the bfd's obstack */ | |
98d43107 | 1312 | syms = (struct external_nlist *) bfd_xmalloc(symbol_size); |
9e2dad8e JG |
1313 | bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET); |
1314 | if (bfd_read ((PTR)syms, 1, symbol_size, abfd) != symbol_size) { | |
1315 | bailout: | |
1316 | if (syms) free (syms); | |
1317 | if (cached) bfd_release (abfd, cached); | |
1318 | if (strings)bfd_release (abfd, strings); | |
1319 | return false; | |
1320 | } | |
7ed4093a | 1321 | |
9e2dad8e JG |
1322 | bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET); |
1323 | if (bfd_read ((PTR)strings, 1, string_size, abfd) != string_size) { | |
1324 | goto bailout; | |
1325 | } | |
7ed4093a | 1326 | |
9e2dad8e JG |
1327 | /* OK, now walk the new symtable, cacheing symbol properties */ |
1328 | { | |
1329 | register struct external_nlist *sym_pointer; | |
1330 | register struct external_nlist *sym_end = syms + bfd_get_symcount (abfd); | |
1331 | register aout_symbol_type *cache_ptr = cached; | |
7ed4093a | 1332 | |
9e2dad8e JG |
1333 | /* Run through table and copy values */ |
1334 | for (sym_pointer = syms, cache_ptr = cached; | |
1335 | sym_pointer < sym_end; sym_pointer++, cache_ptr++) | |
1336 | { | |
1337 | bfd_vma x = GET_WORD(abfd, sym_pointer->e_strx); | |
1338 | cache_ptr->symbol.the_bfd = abfd; | |
1339 | if (x) | |
1340 | cache_ptr->symbol.name = x + strings; | |
1341 | else | |
1342 | cache_ptr->symbol.name = (char *)NULL; | |
7ed4093a | 1343 | |
9e2dad8e | 1344 | cache_ptr->symbol.value = GET_SWORD(abfd, sym_pointer->e_value); |
214f8f23 KR |
1345 | cache_ptr->desc = bfd_h_get_16(abfd, sym_pointer->e_desc); |
1346 | cache_ptr->other = bfd_h_get_8(abfd, sym_pointer->e_other); | |
1347 | cache_ptr->type = bfd_h_get_8(abfd, sym_pointer->e_type); | |
9e2dad8e JG |
1348 | cache_ptr->symbol.udata = 0; |
1349 | translate_from_native_sym_flags (sym_pointer, cache_ptr, abfd); | |
1350 | } | |
1351 | } | |
7ed4093a | 1352 | |
9e2dad8e JG |
1353 | obj_aout_symbols (abfd) = cached; |
1354 | free((PTR)syms); | |
7ed4093a | 1355 | |
9e2dad8e JG |
1356 | return true; |
1357 | } | |
7ed4093a SC |
1358 | |
1359 | ||
1360 | void | |
1361 | DEFUN(NAME(aout,write_syms),(abfd), | |
1362 | bfd *abfd) | |
1363 | { | |
1364 | unsigned int count ; | |
1365 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1366 | ||
1367 | bfd_size_type stindex = BYTES_IN_WORD; /* initial string length */ | |
1368 | ||
1369 | for (count = 0; count < bfd_get_symcount (abfd); count++) { | |
1370 | asymbol *g = generic[count]; | |
1371 | struct external_nlist nsp; | |
6db82ea7 SC |
1372 | |
1373 | ||
7ed4093a SC |
1374 | if (g->name) { |
1375 | unsigned int length = strlen(g->name) +1; | |
1376 | PUT_WORD (abfd, stindex, (unsigned char *)nsp.e_strx); | |
1377 | stindex += length; | |
1378 | } | |
6db82ea7 SC |
1379 | else |
1380 | ||
1381 | { | |
7ed4093a SC |
1382 | PUT_WORD (abfd, 0, (unsigned char *)nsp.e_strx); |
1383 | } | |
1384 | ||
fa2b89f1 | 1385 | if (bfd_asymbol_flavour(g) == abfd->xvec->flavour) |
7ed4093a SC |
1386 | { |
1387 | bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc); | |
1388 | bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other); | |
1389 | bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type); | |
1390 | } | |
1391 | else | |
1392 | { | |
1393 | bfd_h_put_16(abfd,0, nsp.e_desc); | |
1394 | bfd_h_put_8(abfd, 0, nsp.e_other); | |
1395 | bfd_h_put_8(abfd, 0, nsp.e_type); | |
1396 | } | |
7b02b4ed | 1397 | |
7d003262 | 1398 | translate_to_native_sym_flags (&nsp, g, abfd); |
7b02b4ed JG |
1399 | |
1400 | bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd); | |
7ed4093a SC |
1401 | } |
1402 | ||
7ed4093a | 1403 | /* Now output the strings. Be sure to put string length into correct |
7b02b4ed | 1404 | byte ordering before writing it. */ |
7ed4093a SC |
1405 | { |
1406 | char buffer[BYTES_IN_WORD]; | |
1407 | PUT_WORD (abfd, stindex, (unsigned char *)buffer); | |
1408 | ||
1409 | bfd_write((PTR)buffer, 1, BYTES_IN_WORD, abfd); | |
1410 | } | |
1411 | generic = bfd_get_outsymbols(abfd); | |
1412 | for (count = 0; count < bfd_get_symcount(abfd); count++) | |
1413 | { | |
1414 | asymbol *g = *(generic++); | |
1415 | ||
1416 | if (g->name) | |
1417 | { | |
1418 | size_t length = strlen(g->name)+1; | |
1419 | bfd_write((PTR)g->name, 1, length, abfd); | |
1420 | } | |
c618de01 | 1421 | g->KEEPIT = (KEEPITTYPE) count; |
7ed4093a SC |
1422 | } |
1423 | } | |
1424 | ||
1425 | ||
1426 | ||
1427 | unsigned int | |
1428 | DEFUN(NAME(aout,get_symtab),(abfd, location), | |
1429 | bfd *abfd AND | |
1430 | asymbol **location) | |
3f7607af | 1431 | { |
7ed4093a SC |
1432 | unsigned int counter = 0; |
1433 | aout_symbol_type *symbase; | |
ce07dd7c | 1434 | |
7ed4093a | 1435 | if (!NAME(aout,slurp_symbol_table)(abfd)) return 0; |
ce07dd7c | 1436 | |
7ed4093a SC |
1437 | for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);) |
1438 | *(location++) = (asymbol *)( symbase++); | |
1439 | *location++ =0; | |
ce07dd7c | 1440 | return bfd_get_symcount (abfd); |
3f7607af | 1441 | } |
7ed4093a SC |
1442 | |
1443 | \f | |
1444 | /* Standard reloc stuff */ | |
1445 | /* Output standard relocation information to a file in target byte order. */ | |
1446 | ||
1447 | void | |
1448 | DEFUN(NAME(aout,swap_std_reloc_out),(abfd, g, natptr), | |
1449 | bfd *abfd AND | |
1450 | arelent *g AND | |
1451 | struct reloc_std_external *natptr) | |
3f7607af | 1452 | { |
6db82ea7 SC |
1453 | int r_index; |
1454 | asymbol *sym = *(g->sym_ptr_ptr); | |
1455 | int r_extern; | |
1456 | unsigned int r_length; | |
1457 | int r_pcrel; | |
1458 | int r_baserel, r_jmptable, r_relative; | |
1459 | unsigned int r_addend; | |
1460 | asection *output_section = sym->section->output_section; | |
ce07dd7c | 1461 | |
6db82ea7 | 1462 | PUT_WORD(abfd, g->address, natptr->r_address); |
ce07dd7c | 1463 | |
6db82ea7 SC |
1464 | r_length = g->howto->size ; /* Size as a power of two */ |
1465 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
1466 | /* r_baserel, r_jmptable, r_relative??? FIXME-soon */ | |
1467 | r_baserel = 0; | |
1468 | r_jmptable = 0; | |
1469 | r_relative = 0; | |
7ed4093a | 1470 | |
6db82ea7 | 1471 | r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; |
7ed4093a | 1472 | |
6db82ea7 SC |
1473 | /* name was clobbered by aout_write_syms to be symbol index */ |
1474 | ||
2768b3f7 SC |
1475 | /* If this relocation is relative to a symbol then set the |
1476 | r_index to the symbols index, and the r_extern bit. | |
1477 | ||
1478 | Absolute symbols can come in in two ways, either as an offset | |
1479 | from the abs section, or as a symbol which has an abs value. | |
1480 | check for that here | |
1481 | */ | |
1482 | ||
1483 | ||
382f2a3d | 1484 | if (bfd_is_com_section (output_section) |
ce07dd7c KR |
1485 | || output_section == &bfd_abs_section |
1486 | || output_section == &bfd_und_section) | |
1487 | { | |
2768b3f7 SC |
1488 | if (bfd_abs_section.symbol == sym) |
1489 | { | |
1490 | /* Whoops, looked like an abs symbol, but is really an offset | |
1491 | from the abs section */ | |
1492 | r_index = 0; | |
1493 | r_extern = 0; | |
1494 | } | |
1495 | else | |
1496 | { | |
1497 | /* Fill in symbol */ | |
1498 | r_extern = 1; | |
1499 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); | |
1500 | ||
1501 | } | |
ce07dd7c | 1502 | } |
6db82ea7 | 1503 | else |
ce07dd7c KR |
1504 | { |
1505 | /* Just an ordinary section */ | |
1506 | r_extern = 0; | |
1507 | r_index = output_section->target_index; | |
1508 | } | |
1509 | ||
6db82ea7 SC |
1510 | /* now the fun stuff */ |
1511 | if (abfd->xvec->header_byteorder_big_p != false) { | |
7ed4093a SC |
1512 | natptr->r_index[0] = r_index >> 16; |
1513 | natptr->r_index[1] = r_index >> 8; | |
1514 | natptr->r_index[2] = r_index; | |
1515 | natptr->r_type[0] = | |
6db82ea7 SC |
1516 | (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0) |
1517 | | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0) | |
1518 | | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0) | |
1519 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0) | |
1520 | | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0) | |
1521 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG); | |
7ed4093a | 1522 | } else { |
6db82ea7 SC |
1523 | natptr->r_index[2] = r_index >> 16; |
1524 | natptr->r_index[1] = r_index >> 8; | |
1525 | natptr->r_index[0] = r_index; | |
1526 | natptr->r_type[0] = | |
1527 | (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0) | |
7ed4093a | 1528 | | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0) |
6db82ea7 SC |
1529 | | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0) |
1530 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0) | |
1531 | | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0) | |
1532 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
1533 | } | |
3f7607af | 1534 | } |
7ed4093a SC |
1535 | |
1536 | ||
1537 | /* Extended stuff */ | |
1538 | /* Output extended relocation information to a file in target byte order. */ | |
1539 | ||
1540 | void | |
1541 | DEFUN(NAME(aout,swap_ext_reloc_out),(abfd, g, natptr), | |
1542 | bfd *abfd AND | |
1543 | arelent *g AND | |
1544 | register struct reloc_ext_external *natptr) | |
3f7607af | 1545 | { |
6db82ea7 SC |
1546 | int r_index; |
1547 | int r_extern; | |
1548 | unsigned int r_type; | |
1549 | unsigned int r_addend; | |
1550 | asymbol *sym = *(g->sym_ptr_ptr); | |
1551 | asection *output_section = sym->section->output_section; | |
1552 | ||
1553 | PUT_WORD (abfd, g->address, natptr->r_address); | |
7ed4093a | 1554 | |
6db82ea7 | 1555 | r_type = (unsigned int) g->howto->type; |
7ed4093a | 1556 | |
6db82ea7 | 1557 | r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; |
7ed4093a | 1558 | |
7ed4093a | 1559 | |
2768b3f7 SC |
1560 | /* If this relocation is relative to a symbol then set the |
1561 | r_index to the symbols index, and the r_extern bit. | |
1562 | ||
1563 | Absolute symbols can come in in two ways, either as an offset | |
1564 | from the abs section, or as a symbol which has an abs value. | |
1565 | check for that here | |
1566 | */ | |
1567 | ||
382f2a3d | 1568 | if (bfd_is_com_section (output_section) |
2768b3f7 SC |
1569 | || output_section == &bfd_abs_section |
1570 | || output_section == &bfd_und_section) | |
6db82ea7 | 1571 | { |
2768b3f7 SC |
1572 | if (bfd_abs_section.symbol == sym) |
1573 | { | |
1574 | /* Whoops, looked like an abs symbol, but is really an offset | |
1575 | from the abs section */ | |
1576 | r_index = 0; | |
1577 | r_extern = 0; | |
1578 | } | |
1579 | else | |
1580 | { | |
1581 | r_extern = 1; | |
1582 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); | |
1583 | } | |
6db82ea7 SC |
1584 | } |
1585 | else | |
1586 | { | |
1587 | /* Just an ordinary section */ | |
1588 | r_extern = 0; | |
1589 | r_index = output_section->target_index; | |
1590 | } | |
1591 | ||
1592 | ||
7ed4093a SC |
1593 | /* now the fun stuff */ |
1594 | if (abfd->xvec->header_byteorder_big_p != false) { | |
2768b3f7 SC |
1595 | natptr->r_index[0] = r_index >> 16; |
1596 | natptr->r_index[1] = r_index >> 8; | |
1597 | natptr->r_index[2] = r_index; | |
1598 | natptr->r_type[0] = | |
1599 | (r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0) | |
1600 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG); | |
1601 | } else { | |
1602 | natptr->r_index[2] = r_index >> 16; | |
1603 | natptr->r_index[1] = r_index >> 8; | |
1604 | natptr->r_index[0] = r_index; | |
1605 | natptr->r_type[0] = | |
1606 | (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0) | |
1607 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
1608 | } | |
7ed4093a SC |
1609 | |
1610 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
1611 | } | |
1612 | ||
6db82ea7 SC |
1613 | /* BFD deals internally with all things based from the section they're |
1614 | in. so, something in 10 bytes into a text section with a base of | |
1615 | 50 would have a symbol (.text+10) and know .text vma was 50. | |
1616 | ||
1617 | Aout keeps all it's symbols based from zero, so the symbol would | |
1618 | contain 60. This macro subs the base of each section from the value | |
1619 | to give the true offset from the section */ | |
1620 | ||
1621 | ||
7ed4093a SC |
1622 | #define MOVE_ADDRESS(ad) \ |
1623 | if (r_extern) { \ | |
6db82ea7 SC |
1624 | /* undefined symbol */ \ |
1625 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
1626 | cache_ptr->addend = ad; \ | |
1627 | } else { \ | |
1628 | /* defined, section relative. replace symbol with pointer to \ | |
1629 | symbol which points to section */ \ | |
7ed4093a SC |
1630 | switch (r_index) { \ |
1631 | case N_TEXT: \ | |
1632 | case N_TEXT | N_EXT: \ | |
6db82ea7 | 1633 | cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
1634 | cache_ptr->addend = ad - su->textsec->vma; \ |
1635 | break; \ | |
1636 | case N_DATA: \ | |
1637 | case N_DATA | N_EXT: \ | |
6db82ea7 | 1638 | cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
1639 | cache_ptr->addend = ad - su->datasec->vma; \ |
1640 | break; \ | |
1641 | case N_BSS: \ | |
1642 | case N_BSS | N_EXT: \ | |
6db82ea7 | 1643 | cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
1644 | cache_ptr->addend = ad - su->bsssec->vma; \ |
1645 | break; \ | |
6db82ea7 | 1646 | default: \ |
7ed4093a SC |
1647 | case N_ABS: \ |
1648 | case N_ABS | N_EXT: \ | |
6db82ea7 SC |
1649 | cache_ptr->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr; \ |
1650 | cache_ptr->addend = ad; \ | |
7ed4093a SC |
1651 | break; \ |
1652 | } \ | |
1653 | } \ | |
1654 | ||
1655 | void | |
1656 | DEFUN(NAME(aout,swap_ext_reloc_in), (abfd, bytes, cache_ptr, symbols), | |
1657 | bfd *abfd AND | |
1658 | struct reloc_ext_external *bytes AND | |
1659 | arelent *cache_ptr AND | |
1660 | asymbol **symbols) | |
1661 | { | |
1662 | int r_index; | |
1663 | int r_extern; | |
1664 | unsigned int r_type; | |
6db82ea7 | 1665 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
7ed4093a SC |
1666 | |
1667 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
1668 | ||
1669 | /* now the fun stuff */ | |
1670 | if (abfd->xvec->header_byteorder_big_p != false) { | |
382f2a3d ILT |
1671 | r_index = (bytes->r_index[0] << 16) |
1672 | | (bytes->r_index[1] << 8) | |
1673 | | bytes->r_index[2]; | |
7ed4093a SC |
1674 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); |
1675 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
1676 | >> RELOC_EXT_BITS_TYPE_SH_BIG; | |
1677 | } else { | |
382f2a3d ILT |
1678 | r_index = (bytes->r_index[2] << 16) |
1679 | | (bytes->r_index[1] << 8) | |
1680 | | bytes->r_index[0]; | |
7ed4093a SC |
1681 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); |
1682 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
1683 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE; | |
1684 | } | |
1685 | ||
1686 | cache_ptr->howto = howto_table_ext + r_type; | |
6db82ea7 | 1687 | MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend)); |
7ed4093a SC |
1688 | } |
1689 | ||
1690 | void | |
1691 | DEFUN(NAME(aout,swap_std_reloc_in), (abfd, bytes, cache_ptr, symbols), | |
1692 | bfd *abfd AND | |
1693 | struct reloc_std_external *bytes AND | |
1694 | arelent *cache_ptr AND | |
1695 | asymbol **symbols) | |
1696 | { | |
1697 | int r_index; | |
1698 | int r_extern; | |
1699 | unsigned int r_length; | |
1700 | int r_pcrel; | |
1701 | int r_baserel, r_jmptable, r_relative; | |
6db82ea7 | 1702 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
7ed4093a SC |
1703 | |
1704 | cache_ptr->address = (int32_type)(bfd_h_get_32 (abfd, bytes->r_address)); | |
1705 | ||
1706 | /* now the fun stuff */ | |
1707 | if (abfd->xvec->header_byteorder_big_p != false) { | |
382f2a3d ILT |
1708 | r_index = (bytes->r_index[0] << 16) |
1709 | | (bytes->r_index[1] << 8) | |
1710 | | bytes->r_index[2]; | |
7ed4093a SC |
1711 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); |
1712 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
1713 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
1714 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
1715 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
1716 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
1717 | >> RELOC_STD_BITS_LENGTH_SH_BIG; | |
1718 | } else { | |
382f2a3d ILT |
1719 | r_index = (bytes->r_index[2] << 16) |
1720 | | (bytes->r_index[1] << 8) | |
1721 | | bytes->r_index[0]; | |
7ed4093a SC |
1722 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); |
1723 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
1724 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
1725 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
1726 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
1727 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
1728 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE; | |
1729 | } | |
1730 | ||
1731 | cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel; | |
1732 | /* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */ | |
1733 | ||
1734 | MOVE_ADDRESS(0); | |
1735 | } | |
1736 | ||
1737 | /* Reloc hackery */ | |
1738 | ||
1739 | boolean | |
1740 | DEFUN(NAME(aout,slurp_reloc_table),(abfd, asect, symbols), | |
1741 | bfd *abfd AND | |
1742 | sec_ptr asect AND | |
1743 | asymbol **symbols) | |
1744 | { | |
1745 | unsigned int count; | |
1746 | bfd_size_type reloc_size; | |
1747 | PTR relocs; | |
1748 | arelent *reloc_cache; | |
1749 | size_t each_size; | |
1750 | ||
1751 | if (asect->relocation) return true; | |
1752 | ||
1753 | if (asect->flags & SEC_CONSTRUCTOR) return true; | |
1754 | ||
1755 | if (asect == obj_datasec (abfd)) { | |
1756 | reloc_size = exec_hdr(abfd)->a_drsize; | |
1757 | goto doit; | |
1758 | } | |
1759 | ||
1760 | if (asect == obj_textsec (abfd)) { | |
1761 | reloc_size = exec_hdr(abfd)->a_trsize; | |
1762 | goto doit; | |
1763 | } | |
1764 | ||
1765 | bfd_error = invalid_operation; | |
1766 | return false; | |
1767 | ||
1768 | doit: | |
1769 | bfd_seek (abfd, asect->rel_filepos, SEEK_SET); | |
1770 | each_size = obj_reloc_entry_size (abfd); | |
1771 | ||
1772 | count = reloc_size / each_size; | |
1773 | ||
1774 | ||
1775 | reloc_cache = (arelent *) bfd_zalloc (abfd, (size_t)(count * sizeof | |
1776 | (arelent))); | |
1777 | if (!reloc_cache) { | |
1778 | nomem: | |
1779 | bfd_error = no_memory; | |
1780 | return false; | |
1781 | } | |
1782 | ||
1783 | relocs = (PTR) bfd_alloc (abfd, reloc_size); | |
1784 | if (!relocs) { | |
1785 | bfd_release (abfd, reloc_cache); | |
1786 | goto nomem; | |
1787 | } | |
1788 | ||
1789 | if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) { | |
1790 | bfd_release (abfd, relocs); | |
1791 | bfd_release (abfd, reloc_cache); | |
1792 | bfd_error = system_call_error; | |
1793 | return false; | |
1794 | } | |
1795 | ||
1796 | if (each_size == RELOC_EXT_SIZE) { | |
1797 | register struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; | |
1798 | unsigned int counter = 0; | |
1799 | arelent *cache_ptr = reloc_cache; | |
1800 | ||
1801 | for (; counter < count; counter++, rptr++, cache_ptr++) { | |
1802 | NAME(aout,swap_ext_reloc_in)(abfd, rptr, cache_ptr, symbols); | |
1803 | } | |
1804 | } else { | |
1805 | register struct reloc_std_external *rptr = (struct reloc_std_external*) relocs; | |
1806 | unsigned int counter = 0; | |
1807 | arelent *cache_ptr = reloc_cache; | |
1808 | ||
1809 | for (; counter < count; counter++, rptr++, cache_ptr++) { | |
1810 | NAME(aout,swap_std_reloc_in)(abfd, rptr, cache_ptr, symbols); | |
1811 | } | |
1812 | ||
1813 | } | |
1814 | ||
1815 | bfd_release (abfd,relocs); | |
1816 | asect->relocation = reloc_cache; | |
1817 | asect->reloc_count = count; | |
1818 | return true; | |
1819 | } | |
1820 | ||
1821 | ||
1822 | ||
1823 | /* Write out a relocation section into an object file. */ | |
1824 | ||
1825 | boolean | |
1826 | DEFUN(NAME(aout,squirt_out_relocs),(abfd, section), | |
1827 | bfd *abfd AND | |
1828 | asection *section) | |
1829 | { | |
1830 | arelent **generic; | |
1831 | unsigned char *native, *natptr; | |
1832 | size_t each_size; | |
1833 | ||
1834 | unsigned int count = section->reloc_count; | |
1835 | size_t natsize; | |
1836 | ||
1837 | if (count == 0) return true; | |
1838 | ||
1839 | each_size = obj_reloc_entry_size (abfd); | |
1840 | natsize = each_size * count; | |
1841 | native = (unsigned char *) bfd_zalloc (abfd, natsize); | |
1842 | if (!native) { | |
1843 | bfd_error = no_memory; | |
1844 | return false; | |
1845 | } | |
1846 | ||
1847 | generic = section->orelocation; | |
1848 | ||
1849 | if (each_size == RELOC_EXT_SIZE) | |
1850 | { | |
1851 | for (natptr = native; | |
1852 | count != 0; | |
1853 | --count, natptr += each_size, ++generic) | |
1854 | NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr); | |
1855 | } | |
1856 | else | |
1857 | { | |
1858 | for (natptr = native; | |
1859 | count != 0; | |
1860 | --count, natptr += each_size, ++generic) | |
1861 | NAME(aout,swap_std_reloc_out)(abfd, *generic, (struct reloc_std_external *)natptr); | |
1862 | } | |
1863 | ||
1864 | if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) { | |
1865 | bfd_release(abfd, native); | |
1866 | return false; | |
1867 | } | |
1868 | bfd_release (abfd, native); | |
1869 | ||
1870 | return true; | |
1871 | } | |
1872 | ||
1873 | /* This is stupid. This function should be a boolean predicate */ | |
1874 | unsigned int | |
1875 | DEFUN(NAME(aout,canonicalize_reloc),(abfd, section, relptr, symbols), | |
1876 | bfd *abfd AND | |
1877 | sec_ptr section AND | |
1878 | arelent **relptr AND | |
1879 | asymbol **symbols) | |
1880 | { | |
1881 | arelent *tblptr = section->relocation; | |
1882 | unsigned int count; | |
1883 | ||
1884 | if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols))) | |
1885 | return 0; | |
1886 | ||
1887 | if (section->flags & SEC_CONSTRUCTOR) { | |
1888 | arelent_chain *chain = section->constructor_chain; | |
1889 | for (count = 0; count < section->reloc_count; count ++) { | |
1890 | *relptr ++ = &chain->relent; | |
1891 | chain = chain->next; | |
1892 | } | |
1893 | } | |
1894 | else { | |
1895 | tblptr = section->relocation; | |
1896 | if (!tblptr) return 0; | |
1897 | ||
1898 | for (count = 0; count++ < section->reloc_count;) | |
1899 | { | |
1900 | *relptr++ = tblptr++; | |
1901 | } | |
1902 | } | |
1903 | *relptr = 0; | |
1904 | ||
1905 | return section->reloc_count; | |
1906 | } | |
1907 | ||
1908 | unsigned int | |
1909 | DEFUN(NAME(aout,get_reloc_upper_bound),(abfd, asect), | |
1910 | bfd *abfd AND | |
1911 | sec_ptr asect) | |
1912 | { | |
1913 | if (bfd_get_format (abfd) != bfd_object) { | |
1914 | bfd_error = invalid_operation; | |
1915 | return 0; | |
1916 | } | |
1917 | if (asect->flags & SEC_CONSTRUCTOR) { | |
1918 | return (sizeof (arelent *) * (asect->reloc_count+1)); | |
1919 | } | |
1920 | ||
1921 | ||
1922 | if (asect == obj_datasec (abfd)) | |
1923 | return (sizeof (arelent *) * | |
1924 | ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd)) | |
1925 | +1)); | |
1926 | ||
1927 | if (asect == obj_textsec (abfd)) | |
1928 | return (sizeof (arelent *) * | |
1929 | ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd)) | |
1930 | +1)); | |
1931 | ||
1932 | bfd_error = invalid_operation; | |
1933 | return 0; | |
1934 | } | |
1935 | ||
1936 | \f | |
1937 | unsigned int | |
1938 | DEFUN(NAME(aout,get_symtab_upper_bound),(abfd), | |
1939 | bfd *abfd) | |
1940 | { | |
1941 | if (!NAME(aout,slurp_symbol_table)(abfd)) return 0; | |
1942 | ||
1943 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
1944 | } | |
1945 | alent * | |
1946 | DEFUN(NAME(aout,get_lineno),(ignore_abfd, ignore_symbol), | |
1947 | bfd *ignore_abfd AND | |
1948 | asymbol *ignore_symbol) | |
1949 | { | |
1950 | return (alent *)NULL; | |
1951 | } | |
1952 | ||
1953 | ||
1954 | void | |
1955 | DEFUN(NAME(aout,print_symbol),(ignore_abfd, afile, symbol, how), | |
1956 | bfd *ignore_abfd AND | |
1957 | PTR afile AND | |
1958 | asymbol *symbol AND | |
9e2dad8e | 1959 | bfd_print_symbol_type how) |
7ed4093a SC |
1960 | { |
1961 | FILE *file = (FILE *)afile; | |
1962 | ||
1963 | switch (how) { | |
9e2dad8e | 1964 | case bfd_print_symbol_name: |
fb3be09b JG |
1965 | if (symbol->name) |
1966 | fprintf(file,"%s", symbol->name); | |
7ed4093a | 1967 | break; |
9e2dad8e | 1968 | case bfd_print_symbol_more: |
7ed4093a SC |
1969 | fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff), |
1970 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
1971 | (unsigned)(aout_symbol(symbol)->type)); | |
1972 | break; | |
9e2dad8e | 1973 | case bfd_print_symbol_all: |
7ed4093a | 1974 | { |
6db82ea7 SC |
1975 | CONST char *section_name = symbol->section->name; |
1976 | ||
7ed4093a SC |
1977 | |
1978 | bfd_print_symbol_vandf((PTR)file,symbol); | |
1979 | ||
fb3be09b | 1980 | fprintf(file," %-5s %04x %02x %02x", |
7ed4093a SC |
1981 | section_name, |
1982 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
1983 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
9e2dad8e | 1984 | (unsigned)(aout_symbol(symbol)->type & 0xff)); |
fb3be09b JG |
1985 | if (symbol->name) |
1986 | fprintf(file," %s", symbol->name); | |
7ed4093a SC |
1987 | } |
1988 | break; | |
98d43107 JG |
1989 | case bfd_print_symbol_nm: |
1990 | { | |
1991 | int section_code = bfd_decode_symclass (symbol); | |
1992 | ||
1993 | if (section_code == 'U') | |
1994 | fprintf(file, " "); | |
55c0061e FF |
1995 | else |
1996 | fprintf_vma(file, symbol->value+symbol->section->vma); | |
98d43107 JG |
1997 | if (section_code == '?') |
1998 | { | |
1999 | int type_code = aout_symbol(symbol)->type & 0xff; | |
fa2b89f1 | 2000 | CONST char *stab_name = aout_stab_name(type_code); |
98d43107 JG |
2001 | char buf[10]; |
2002 | if (stab_name == NULL) | |
2003 | { | |
2004 | sprintf(buf, "(%d)", type_code); | |
2005 | stab_name = buf; | |
2006 | } | |
2007 | fprintf(file," - %02x %04x %5s", | |
2008 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
2009 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
2010 | stab_name); | |
2011 | } | |
2012 | else | |
2013 | fprintf(file," %c", section_code); | |
2014 | if (symbol->name) | |
2015 | fprintf(file," %s", symbol->name); | |
2016 | } | |
2017 | break; | |
7ed4093a SC |
2018 | } |
2019 | } | |
2020 | ||
2021 | /* | |
6724ff46 | 2022 | provided a BFD, a section and an offset into the section, calculate |
7ed4093a SC |
2023 | and return the name of the source file and the line nearest to the |
2024 | wanted location. | |
2025 | */ | |
2026 | ||
2027 | boolean | |
2028 | DEFUN(NAME(aout,find_nearest_line),(abfd, | |
2029 | section, | |
2030 | symbols, | |
2031 | offset, | |
2032 | filename_ptr, | |
2033 | functionname_ptr, | |
2034 | line_ptr), | |
2035 | bfd *abfd AND | |
2036 | asection *section AND | |
2037 | asymbol **symbols AND | |
2038 | bfd_vma offset AND | |
2039 | CONST char **filename_ptr AND | |
2040 | CONST char **functionname_ptr AND | |
2041 | unsigned int *line_ptr) | |
2042 | { | |
2043 | /* Run down the file looking for the filename, function and linenumber */ | |
2044 | asymbol **p; | |
2045 | static char buffer[100]; | |
98d43107 | 2046 | static char filename_buffer[200]; |
6db82ea7 SC |
2047 | CONST char *directory_name = NULL; |
2048 | CONST char *main_file_name = NULL; | |
2049 | CONST char *current_file_name = NULL; | |
2050 | CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */ | |
7ed4093a SC |
2051 | bfd_vma high_line_vma = ~0; |
2052 | bfd_vma low_func_vma = 0; | |
2053 | asymbol *func = 0; | |
2054 | *filename_ptr = abfd->filename; | |
2055 | *functionname_ptr = 0; | |
2056 | *line_ptr = 0; | |
2057 | if (symbols != (asymbol **)NULL) { | |
2058 | for (p = symbols; *p; p++) { | |
2059 | aout_symbol_type *q = (aout_symbol_type *)(*p); | |
98d43107 | 2060 | next: |
7ed4093a SC |
2061 | switch (q->type){ |
2062 | case N_SO: | |
3f7607af | 2063 | main_file_name = current_file_name = q->symbol.name; |
98d43107 JG |
2064 | /* Look ahead to next symbol to check if that too is an N_SO. */ |
2065 | p++; | |
2066 | if (*p == NULL) | |
2067 | break; | |
2068 | q = (aout_symbol_type *)(*p); | |
6db82ea7 | 2069 | if (q->type != (int)N_SO) |
98d43107 JG |
2070 | goto next; |
2071 | ||
2072 | /* Found a second N_SO First is directory; second is filename. */ | |
3f7607af PB |
2073 | directory_name = current_file_name; |
2074 | main_file_name = current_file_name = q->symbol.name; | |
2075 | if (obj_textsec(abfd) != section) | |
2076 | goto done; | |
2077 | break; | |
2078 | case N_SOL: | |
2079 | current_file_name = q->symbol.name; | |
7ed4093a | 2080 | break; |
3f7607af | 2081 | |
7ed4093a SC |
2082 | case N_SLINE: |
2083 | ||
2084 | case N_DSLINE: | |
2085 | case N_BSLINE: | |
2086 | /* We'll keep this if it resolves nearer than the one we have already */ | |
2087 | if (q->symbol.value >= offset && | |
2088 | q->symbol.value < high_line_vma) { | |
2089 | *line_ptr = q->desc; | |
2090 | high_line_vma = q->symbol.value; | |
3f7607af | 2091 | line_file_name = current_file_name; |
7ed4093a SC |
2092 | } |
2093 | break; | |
2094 | case N_FUN: | |
2095 | { | |
2096 | /* We'll keep this if it is nearer than the one we have already */ | |
2097 | if (q->symbol.value >= low_func_vma && | |
2098 | q->symbol.value <= offset) { | |
2099 | low_func_vma = q->symbol.value; | |
2100 | func = (asymbol *)q; | |
2101 | } | |
2102 | if (*line_ptr && func) { | |
2103 | CONST char *function = func->name; | |
2104 | char *p; | |
2105 | strncpy(buffer, function, sizeof(buffer)-1); | |
2106 | buffer[sizeof(buffer)-1] = 0; | |
2107 | /* Have to remove : stuff */ | |
2108 | p = strchr(buffer,':'); | |
7b02b4ed | 2109 | if (p != NULL) { *p = '\0'; } |
7ed4093a | 2110 | *functionname_ptr = buffer; |
3f7607af | 2111 | goto done; |
7ed4093a SC |
2112 | |
2113 | } | |
2114 | } | |
2115 | break; | |
2116 | } | |
2117 | } | |
2118 | } | |
3f7607af PB |
2119 | |
2120 | done: | |
2121 | if (*line_ptr) | |
2122 | main_file_name = line_file_name; | |
2123 | if (main_file_name) { | |
2124 | if (main_file_name[0] == '/' || directory_name == NULL) | |
2125 | *filename_ptr = main_file_name; | |
2126 | else { | |
2127 | sprintf(filename_buffer, "%.140s%.50s", | |
2128 | directory_name, main_file_name); | |
2129 | *filename_ptr = filename_buffer; | |
2130 | } | |
2131 | } | |
7ed4093a SC |
2132 | return true; |
2133 | ||
2134 | } | |
2135 | ||
2136 | int | |
cbdc7909 JG |
2137 | DEFUN(NAME(aout,sizeof_headers),(abfd, execable), |
2138 | bfd *abfd AND | |
9e2dad8e | 2139 | boolean execable) |
7ed4093a | 2140 | { |
6db82ea7 | 2141 | return adata(abfd).exec_bytes_size; |
7ed4093a | 2142 | } |