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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 | ||
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 SC |
180 | HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, false, true,0,"RELATIVE", false, 0,0x00000000, false), |
181 | ||
7ed4093a SC |
182 | }; |
183 | ||
184 | /* Convert standard reloc records to "arelent" format (incl byte swap). */ | |
185 | ||
ce07dd7c | 186 | reloc_howto_type howto_table_std[] = { |
7ed4093a SC |
187 | /* type rs size bsz pcrel bitpos abs ovrf sf name part_inpl readmask setmask pcdone */ |
188 | HOWTO( 0, 0, 0, 8, false, 0, true, true,0,"8", true, 0x000000ff,0x000000ff, false), | |
189 | HOWTO( 1, 0, 1, 16, false, 0, true, true,0,"16", true, 0x0000ffff,0x0000ffff, false), | |
190 | HOWTO( 2, 0, 2, 32, false, 0, true, true,0,"32", true, 0xffffffff,0xffffffff, false), | |
191 | HOWTO( 3, 0, 3, 64, false, 0, true, true,0,"64", true, 0xdeaddead,0xdeaddead, false), | |
192 | HOWTO( 4, 0, 0, 8, true, 0, false, true,0,"DISP8", true, 0x000000ff,0x000000ff, false), | |
193 | HOWTO( 5, 0, 1, 16, true, 0, false, true,0,"DISP16", true, 0x0000ffff,0x0000ffff, false), | |
194 | HOWTO( 6, 0, 2, 32, true, 0, false, true,0,"DISP32", true, 0xffffffff,0xffffffff, false), | |
195 | HOWTO( 7, 0, 3, 64, true, 0, false, true,0,"DISP64", true, 0xfeedface,0xfeedface, false), | |
196 | }; | |
197 | ||
198 | ||
ce07dd7c | 199 | extern bfd_error_vector_type bfd_error_vector; |
6f715d66 | 200 | |
4e41b5aa SC |
201 | /* |
202 | SUBSECTION | |
203 | Internal Entry Points | |
204 | ||
205 | DESCRIPTION | |
206 | @code{aoutx.h} exports several routines for accessing the | |
207 | contents of an a.out file, which are gathered and exported in | |
208 | turn by various format specific files (eg sunos.c). | |
209 | ||
6f715d66 SC |
210 | */ |
211 | ||
4e41b5aa SC |
212 | /* |
213 | FUNCTION | |
214 | aout_<size>_swap_exec_header_in | |
215 | ||
216 | DESCRIPTION | |
217 | Swaps the information in an executable header taken from a raw | |
218 | byte stream memory image, into the internal exec_header | |
219 | structure. | |
220 | ||
221 | EXAMPLE | |
222 | void aout_<size>_swap_exec_header_in, | |
223 | (bfd *abfd, | |
224 | struct external_exec *raw_bytes, | |
225 | struct internal_exec *execp); | |
6f715d66 SC |
226 | */ |
227 | ||
7ed4093a SC |
228 | void |
229 | DEFUN(NAME(aout,swap_exec_header_in),(abfd, raw_bytes, execp), | |
230 | bfd *abfd AND | |
231 | struct external_exec *raw_bytes AND | |
232 | struct internal_exec *execp) | |
233 | { | |
234 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
235 | ||
55c0061e FF |
236 | /* The internal_exec structure has some fields that are unused in this |
237 | configuration (IE for i960), so ensure that all such uninitialized | |
238 | fields are zero'd out. There are places where two of these structs | |
239 | are memcmp'd, and thus the contents do matter. */ | |
240 | memset (execp, 0, sizeof (struct internal_exec)); | |
7ed4093a SC |
241 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
242 | execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); | |
243 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
244 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
245 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
246 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
247 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
248 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); | |
249 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
250 | } | |
251 | ||
4e41b5aa SC |
252 | /* |
253 | FUNCTION | |
254 | aout_<size>_swap_exec_header_out | |
255 | ||
256 | DESCRIPTION | |
257 | Swaps the information in an internal exec header structure | |
258 | into the supplied buffer ready for writing to disk. | |
259 | ||
260 | EXAMPLE | |
261 | void aout_<size>_swap_exec_header_out | |
6f715d66 SC |
262 | (bfd *abfd, |
263 | struct internal_exec *execp, | |
4e41b5aa | 264 | struct external_exec *raw_bytes); |
6f715d66 | 265 | */ |
7ed4093a SC |
266 | void |
267 | DEFUN(NAME(aout,swap_exec_header_out),(abfd, execp, raw_bytes), | |
268 | bfd *abfd AND | |
269 | struct internal_exec *execp AND | |
270 | struct external_exec *raw_bytes) | |
271 | { | |
272 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
273 | ||
274 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ | |
275 | bfd_h_put_32 (abfd, execp->a_info , bytes->e_info); | |
276 | PUT_WORD (abfd, execp->a_text , bytes->e_text); | |
277 | PUT_WORD (abfd, execp->a_data , bytes->e_data); | |
278 | PUT_WORD (abfd, execp->a_bss , bytes->e_bss); | |
279 | PUT_WORD (abfd, execp->a_syms , bytes->e_syms); | |
280 | PUT_WORD (abfd, execp->a_entry , bytes->e_entry); | |
281 | PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); | |
282 | PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); | |
283 | } | |
284 | ||
7ed4093a | 285 | |
6f715d66 | 286 | |
4e41b5aa SC |
287 | /* |
288 | FUNCTION | |
289 | aout_<size>_some_aout_object_p | |
6f715d66 | 290 | |
4e41b5aa SC |
291 | DESCRIPTION |
292 | Some A.OUT variant thinks that the file whose format we're | |
293 | checking is an a.out file. Do some more checking, and set up | |
294 | for access if it really is. Call back to the calling | |
295 | environments "finish up" function just before returning, to | |
296 | handle any last-minute setup. | |
6f715d66 | 297 | |
4e41b5aa SC |
298 | EXAMPLE |
299 | bfd_target *aout_<size>_some_aout_object_p | |
6f715d66 | 300 | (bfd *abfd, |
4e41b5aa | 301 | bfd_target *(*callback_to_real_object_p)()); |
6f715d66 | 302 | */ |
7ed4093a SC |
303 | |
304 | bfd_target * | |
7b02b4ed | 305 | DEFUN(NAME(aout,some_aout_object_p),(abfd, execp, callback_to_real_object_p), |
7ed4093a | 306 | bfd *abfd AND |
7b02b4ed | 307 | struct internal_exec *execp AND |
7ed4093a SC |
308 | bfd_target *(*callback_to_real_object_p) ()) |
309 | { | |
6db82ea7 | 310 | struct aout_data_struct *rawptr; |
e6e265ce | 311 | bfd_target *result; |
7ed4093a | 312 | |
6db82ea7 | 313 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (struct aout_data_struct )); |
7ed4093a SC |
314 | if (rawptr == NULL) { |
315 | bfd_error = no_memory; | |
316 | return 0; | |
317 | } | |
318 | ||
6db82ea7 SC |
319 | abfd->tdata.aout_data = rawptr; |
320 | abfd->tdata.aout_data->a.hdr = &rawptr->e; | |
321 | *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */ | |
322 | execp = abfd->tdata.aout_data->a.hdr; | |
7ed4093a SC |
323 | |
324 | /* Set the file flags */ | |
325 | abfd->flags = NO_FLAGS; | |
326 | if (execp->a_drsize || execp->a_trsize) | |
327 | abfd->flags |= HAS_RELOC; | |
e6e265ce | 328 | /* Setting of EXEC_P has been deferred to the bottom of this function */ |
7ed4093a SC |
329 | if (execp->a_syms) |
330 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
331 | ||
ce07dd7c KR |
332 | if (N_MAGIC (*execp) == ZMAGIC) |
333 | { | |
334 | abfd->flags |= D_PAGED|WP_TEXT; | |
335 | adata(abfd).magic = z_magic; | |
336 | } | |
337 | else if (N_MAGIC (*execp) == NMAGIC) | |
338 | { | |
339 | abfd->flags |= WP_TEXT; | |
340 | adata(abfd).magic = n_magic; | |
341 | } | |
342 | else | |
343 | adata(abfd).magic = o_magic; | |
7ed4093a SC |
344 | |
345 | bfd_get_start_address (abfd) = execp->a_entry; | |
346 | ||
347 | obj_aout_symbols (abfd) = (aout_symbol_type *)NULL; | |
348 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); | |
349 | ||
7ed4093a SC |
350 | /* The default relocation entry size is that of traditional V7 Unix. */ |
351 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
352 | ||
7b02b4ed JG |
353 | /* The default symbol entry size is that of traditional Unix. */ |
354 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; | |
355 | ||
7ed4093a SC |
356 | /* create the sections. This is raunchy, but bfd_close wants to reclaim |
357 | them */ | |
6db82ea7 | 358 | |
7ed4093a SC |
359 | obj_textsec (abfd) = (asection *)NULL; |
360 | obj_datasec (abfd) = (asection *)NULL; | |
361 | obj_bsssec (abfd) = (asection *)NULL; | |
6db82ea7 | 362 | |
7ed4093a SC |
363 | (void)bfd_make_section(abfd, ".text"); |
364 | (void)bfd_make_section(abfd, ".data"); | |
365 | (void)bfd_make_section(abfd, ".bss"); | |
6db82ea7 SC |
366 | /* (void)bfd_make_section(abfd, BFD_ABS_SECTION_NAME); |
367 | (void)bfd_make_section (abfd, BFD_UND_SECTION_NAME); | |
368 | (void)bfd_make_section (abfd, BFD_COM_SECTION_NAME);*/ | |
7ed4093a SC |
369 | abfd->sections = obj_textsec (abfd); |
370 | obj_textsec (abfd)->next = obj_datasec (abfd); | |
371 | obj_datasec (abfd)->next = obj_bsssec (abfd); | |
372 | ||
6db82ea7 SC |
373 | obj_datasec (abfd)->_raw_size = execp->a_data; |
374 | obj_bsssec (abfd)->_raw_size = execp->a_bss; | |
7ed4093a | 375 | |
7ed4093a | 376 | obj_textsec (abfd)->flags = (execp->a_trsize != 0 ? |
7b02b4ed JG |
377 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_HAS_CONTENTS) : |
378 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)); | |
7ed4093a | 379 | obj_datasec (abfd)->flags = (execp->a_drsize != 0 ? |
7b02b4ed JG |
380 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_HAS_CONTENTS) : |
381 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)); | |
7ed4093a SC |
382 | obj_bsssec (abfd)->flags = SEC_ALLOC; |
383 | ||
384 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
98d43107 JG |
385 | /* The common code can't fill in these things because they depend |
386 | on either the start address of the text segment, the rounding | |
387 | up of virtual addersses between segments, or the starting file | |
388 | position of the text segment -- all of which varies among different | |
389 | versions of a.out. */ | |
390 | ||
7ed4093a SC |
391 | /* Call back to the format-dependent code to fill in the rest of the |
392 | fields and do any further cleanup. Things that should be filled | |
393 | in by the callback: */ | |
394 | ||
395 | struct exec *execp = exec_hdr (abfd); | |
396 | ||
98d43107 | 397 | obj_textsec (abfd)->size = N_TXTSIZE(*execp); |
6db82ea7 | 398 | obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp); |
98d43107 JG |
399 | /* data and bss are already filled in since they're so standard */ |
400 | ||
7ed4093a | 401 | /* The virtual memory addresses of the sections */ |
7ed4093a | 402 | obj_textsec (abfd)->vma = N_TXTADDR(*execp); |
98d43107 JG |
403 | obj_datasec (abfd)->vma = N_DATADDR(*execp); |
404 | obj_bsssec (abfd)->vma = N_BSSADDR(*execp); | |
7ed4093a SC |
405 | |
406 | /* The file offsets of the sections */ | |
407 | obj_textsec (abfd)->filepos = N_TXTOFF(*execp); | |
408 | obj_datasec (abfd)->filepos = N_DATOFF(*execp); | |
409 | ||
410 | /* The file offsets of the relocation info */ | |
411 | obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); | |
412 | obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); | |
413 | ||
414 | /* The file offsets of the string table and symbol table. */ | |
415 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
416 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
417 | ||
7ed4093a SC |
418 | /* Determine the architecture and machine type of the object file. */ |
419 | switch (N_MACHTYPE (*exec_hdr (abfd))) { | |
420 | default: | |
421 | abfd->obj_arch = bfd_arch_obscure; | |
422 | break; | |
423 | } | |
424 | ||
425 | /* Determine the size of a relocation entry */ | |
426 | switch (abfd->obj_arch) { | |
427 | case bfd_arch_sparc: | |
428 | case bfd_arch_a29k: | |
429 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; | |
430 | default: | |
431 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
432 | } | |
433 | ||
7b02b4ed JG |
434 | adata(abfd)->page_size = PAGE_SIZE; |
435 | adata(abfd)->segment_size = SEGMENT_SIZE; | |
436 | adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
437 | ||
7ed4093a SC |
438 | return abfd->xvec; |
439 | ||
440 | /* The architecture is encoded in various ways in various a.out variants, | |
441 | or is not encoded at all in some of them. The relocation size depends | |
442 | on the architecture and the a.out variant. Finally, the return value | |
443 | is the bfd_target vector in use. If an error occurs, return zero and | |
444 | set bfd_error to the appropriate error code. | |
445 | ||
446 | Formats such as b.out, which have additional fields in the a.out | |
447 | header, should cope with them in this callback as well. */ | |
448 | #endif /* DOCUMENTATION */ | |
449 | ||
e6e265ce JG |
450 | result = (*callback_to_real_object_p)(abfd); |
451 | ||
452 | /* Now that the segment addresses have been worked out, take a better | |
453 | guess at whether the file is executable. If the entry point | |
454 | is within the text segment, assume it is. (This makes files | |
455 | executable even if their entry point address is 0, as long as | |
456 | their text starts at zero.) | |
457 | ||
458 | At some point we should probably break down and stat the file and | |
459 | declare it executable if (one of) its 'x' bits are on... */ | |
460 | if ((execp->a_entry >= obj_textsec(abfd)->vma) && | |
6db82ea7 | 461 | (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size)) |
e6e265ce JG |
462 | abfd->flags |= EXEC_P; |
463 | return result; | |
7ed4093a SC |
464 | } |
465 | ||
4e41b5aa SC |
466 | /* |
467 | FUNCTION | |
468 | aout_<size>_mkobject | |
6f715d66 | 469 | |
4e41b5aa SC |
470 | DESCRIPTION |
471 | This routine initializes a BFD for use with a.out files. | |
6f715d66 | 472 | |
4e41b5aa SC |
473 | EXAMPLE |
474 | boolean aout_<size>_mkobject, (bfd *); | |
6f715d66 | 475 | */ |
7ed4093a SC |
476 | |
477 | boolean | |
478 | DEFUN(NAME(aout,mkobject),(abfd), | |
479 | bfd *abfd) | |
480 | { | |
6db82ea7 | 481 | struct aout_data_struct *rawptr; |
7ed4093a SC |
482 | |
483 | bfd_error = system_call_error; | |
484 | ||
485 | /* Use an intermediate variable for clarity */ | |
6db82ea7 | 486 | rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct )); |
7ed4093a SC |
487 | |
488 | if (rawptr == NULL) { | |
489 | bfd_error = no_memory; | |
490 | return false; | |
491 | } | |
492 | ||
6db82ea7 | 493 | abfd->tdata.aout_data = rawptr; |
7ed4093a SC |
494 | exec_hdr (abfd) = &(rawptr->e); |
495 | ||
496 | /* For simplicity's sake we just make all the sections right here. */ | |
497 | ||
498 | obj_textsec (abfd) = (asection *)NULL; | |
499 | obj_datasec (abfd) = (asection *)NULL; | |
500 | obj_bsssec (abfd) = (asection *)NULL; | |
501 | bfd_make_section (abfd, ".text"); | |
502 | bfd_make_section (abfd, ".data"); | |
503 | bfd_make_section (abfd, ".bss"); | |
6db82ea7 SC |
504 | bfd_make_section (abfd, BFD_ABS_SECTION_NAME); |
505 | bfd_make_section (abfd, BFD_UND_SECTION_NAME); | |
506 | bfd_make_section (abfd, BFD_COM_SECTION_NAME); | |
7ed4093a SC |
507 | |
508 | return true; | |
509 | } | |
510 | ||
6f715d66 | 511 | |
4e41b5aa SC |
512 | /* |
513 | FUNCTION | |
514 | aout_<size>_machine_type | |
6f715d66 | 515 | |
4e41b5aa SC |
516 | DESCRIPTION |
517 | Keep track of machine architecture and machine type for | |
518 | a.out's. Return the machine_type for a particular | |
519 | arch&machine, or M_UNKNOWN if that exact arch&machine can't be | |
520 | represented in a.out format. | |
7ed4093a | 521 | |
4e41b5aa SC |
522 | If the architecture is understood, machine type 0 (default) |
523 | should always be understood. | |
6f715d66 | 524 | |
4e41b5aa SC |
525 | EXAMPLE |
526 | enum machine_type aout_<size>_machine_type | |
6f715d66 SC |
527 | (enum bfd_architecture arch, |
528 | unsigned long machine)); | |
529 | */ | |
7ed4093a SC |
530 | |
531 | enum machine_type | |
532 | DEFUN(NAME(aout,machine_type),(arch, machine), | |
533 | enum bfd_architecture arch AND | |
534 | unsigned long machine) | |
535 | { | |
536 | enum machine_type arch_flags; | |
537 | ||
538 | arch_flags = M_UNKNOWN; | |
539 | ||
540 | switch (arch) { | |
541 | case bfd_arch_sparc: | |
542 | if (machine == 0) arch_flags = M_SPARC; | |
543 | break; | |
544 | ||
545 | case bfd_arch_m68k: | |
546 | switch (machine) { | |
547 | case 0: arch_flags = M_68010; break; | |
548 | case 68000: arch_flags = M_UNKNOWN; break; | |
549 | case 68010: arch_flags = M_68010; break; | |
550 | case 68020: arch_flags = M_68020; break; | |
551 | default: arch_flags = M_UNKNOWN; break; | |
552 | } | |
553 | break; | |
554 | ||
555 | case bfd_arch_i386: | |
556 | if (machine == 0) arch_flags = M_386; | |
557 | break; | |
558 | ||
559 | case bfd_arch_a29k: | |
560 | if (machine == 0) arch_flags = M_29K; | |
561 | break; | |
562 | ||
563 | default: | |
564 | arch_flags = M_UNKNOWN; | |
565 | break; | |
566 | } | |
567 | return arch_flags; | |
568 | } | |
569 | ||
9e2dad8e | 570 | |
4e41b5aa SC |
571 | /* |
572 | FUNCTION | |
573 | aout_<size>_set_arch_mach | |
6f715d66 | 574 | |
4e41b5aa SC |
575 | DESCRIPTION |
576 | Sets the architecture and the machine of the BFD to those | |
577 | values supplied. Verifies that the format can support the | |
578 | architecture required. | |
6f715d66 | 579 | |
4e41b5aa SC |
580 | EXAMPLE |
581 | boolean aout_<size>_set_arch_mach, | |
6f715d66 SC |
582 | (bfd *, |
583 | enum bfd_architecture, | |
584 | unsigned long machine)); | |
585 | */ | |
586 | ||
7ed4093a SC |
587 | boolean |
588 | DEFUN(NAME(aout,set_arch_mach),(abfd, arch, machine), | |
589 | bfd *abfd AND | |
590 | enum bfd_architecture arch AND | |
591 | unsigned long machine) | |
592 | { | |
9e2dad8e | 593 | bfd_default_set_arch_mach(abfd, arch, machine); |
7ed4093a SC |
594 | if (arch != bfd_arch_unknown && |
595 | NAME(aout,machine_type) (arch, machine) == M_UNKNOWN) | |
596 | return false; /* We can't represent this type */ | |
ce07dd7c | 597 | |
2768b3f7 | 598 | return (*aout_backend_info(abfd)->set_sizes) (abfd); |
7ed4093a | 599 | } |
7ed4093a | 600 | |
ce07dd7c KR |
601 | boolean |
602 | DEFUN (NAME (aout,adjust_sizes_and_vmas), (abfd, text_size, text_end), | |
603 | bfd *abfd AND bfd_size_type *text_size AND file_ptr *text_end) | |
604 | { | |
605 | struct internal_exec *execp = exec_hdr (abfd); | |
606 | if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL)) | |
607 | { | |
608 | bfd_error = invalid_operation; | |
609 | return false; | |
610 | } | |
611 | if (adata(abfd).magic != undecided_magic) return true; | |
612 | obj_textsec(abfd)->_raw_size = | |
613 | align_power(obj_textsec(abfd)->_raw_size, | |
614 | obj_textsec(abfd)->alignment_power); | |
615 | ||
616 | *text_size = obj_textsec (abfd)->_raw_size; | |
617 | /* Rule (heuristic) for when to pad to a new page. Note that there | |
618 | * are (at least) two ways demand-paged (ZMAGIC) files have been | |
619 | * handled. Most Berkeley-based systems start the text segment at | |
620 | * (PAGE_SIZE). However, newer versions of SUNOS start the text | |
621 | * segment right after the exec header; the latter is counted in the | |
622 | * text segment size, and is paged in by the kernel with the rest of | |
623 | * the text. */ | |
624 | ||
625 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
626 | to understand enough to implement it. Better would probably be to go | |
627 | right from BFD flags to alignment/positioning characteristics. But the | |
628 | old code was sloppy enough about handling the flags, and had enough | |
629 | other magic, that it was a little hard for me to understand. I think | |
630 | I understand it better now, but I haven't time to do the cleanup this | |
631 | minute. */ | |
632 | if (adata(abfd).magic == undecided_magic) | |
633 | { | |
634 | if (abfd->flags & D_PAGED) | |
635 | /* whether or not WP_TEXT is set */ | |
636 | adata(abfd).magic = z_magic; | |
637 | else if (abfd->flags & WP_TEXT) | |
638 | adata(abfd).magic = n_magic; | |
639 | else | |
640 | adata(abfd).magic = o_magic; | |
641 | } | |
642 | ||
643 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
644 | #if __GNUC__ >= 2 | |
645 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
646 | ({ char *str; | |
647 | switch (adata(abfd).magic) { | |
648 | case n_magic: str = "NMAGIC"; break; | |
649 | case o_magic: str = "OMAGIC"; break; | |
650 | case z_magic: str = "ZMAGIC"; break; | |
651 | default: abort (); | |
652 | } | |
653 | str; | |
654 | }), | |
655 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, obj_textsec(abfd)->alignment_power, | |
656 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, obj_datasec(abfd)->alignment_power, | |
657 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size, obj_bsssec(abfd)->alignment_power); | |
658 | #endif | |
659 | #endif | |
660 | ||
661 | switch (adata(abfd).magic) | |
662 | { | |
663 | case o_magic: | |
664 | { | |
665 | file_ptr pos = adata (abfd).exec_bytes_size; | |
666 | bfd_vma vma = 0; | |
667 | int pad; | |
668 | ||
669 | obj_textsec(abfd)->filepos = pos; | |
670 | pos += obj_textsec(abfd)->_raw_size; | |
671 | vma += obj_textsec(abfd)->_raw_size; | |
672 | if (!obj_datasec(abfd)->user_set_vma) | |
673 | { | |
674 | /* ?? Does alignment in the file image really matter? */ | |
675 | pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma; | |
676 | obj_textsec(abfd)->_raw_size += pad; | |
677 | pos += pad; | |
678 | vma += pad; | |
679 | obj_datasec(abfd)->vma = vma; | |
680 | } | |
681 | obj_datasec(abfd)->filepos = pos; | |
682 | pos += obj_datasec(abfd)->_raw_size; | |
683 | vma += obj_datasec(abfd)->_raw_size; | |
684 | if (!obj_bsssec(abfd)->user_set_vma) | |
685 | { | |
686 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; | |
687 | obj_datasec(abfd)->_raw_size += pad; | |
688 | pos += pad; | |
689 | vma += pad; | |
690 | obj_bsssec(abfd)->vma = vma; | |
691 | } | |
692 | obj_bsssec(abfd)->filepos = pos; | |
693 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
694 | execp->a_data = obj_datasec(abfd)->_raw_size; | |
695 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
696 | N_SET_MAGIC (*execp, OMAGIC); | |
697 | } | |
698 | break; | |
699 | case z_magic: | |
700 | { | |
701 | bfd_size_type data_pad, text_pad; | |
702 | file_ptr text_end; | |
703 | CONST struct aout_backend_data *abdp; | |
704 | int ztih; | |
705 | bfd_vma data_vma; | |
706 | ||
707 | abdp = aout_backend_info (abfd); | |
708 | ztih = abdp && abdp->text_includes_header; | |
709 | obj_textsec(abfd)->filepos = (ztih | |
710 | ? adata(abfd).exec_bytes_size | |
711 | : adata(abfd).page_size); | |
712 | if (! obj_textsec(abfd)->user_set_vma) | |
713 | /* ?? Do we really need to check for relocs here? */ | |
714 | obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC) | |
715 | ? 0 | |
716 | : (ztih | |
717 | ? (abdp->default_text_vma | |
718 | + adata(abfd).exec_bytes_size) | |
719 | : abdp->default_text_vma)); | |
720 | /* Could take strange alignment of text section into account here? */ | |
721 | ||
722 | /* Find start of data. */ | |
723 | text_end = obj_textsec(abfd)->filepos + obj_textsec(abfd)->_raw_size; | |
724 | text_pad = BFD_ALIGN (text_end, adata(abfd).page_size) - text_end; | |
725 | obj_textsec(abfd)->_raw_size += text_pad; | |
726 | text_end += text_pad; | |
727 | ||
728 | if (!obj_datasec(abfd)->user_set_vma) | |
729 | { | |
730 | bfd_vma vma; | |
731 | vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size; | |
732 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
733 | } | |
734 | data_vma = obj_datasec(abfd)->vma; | |
735 | if (abdp && abdp->zmagic_mapped_contiguous) | |
736 | { | |
737 | text_pad = (obj_datasec(abfd)->vma | |
738 | - obj_textsec(abfd)->vma | |
739 | - obj_textsec(abfd)->_raw_size); | |
740 | obj_textsec(abfd)->_raw_size += text_pad; | |
741 | } | |
742 | obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos | |
743 | + obj_textsec(abfd)->_raw_size); | |
744 | ||
745 | /* Fix up exec header while we're at it. */ | |
746 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
747 | if (ztih) | |
748 | execp->a_text += adata(abfd).exec_bytes_size; | |
749 | N_SET_MAGIC (*execp, ZMAGIC); | |
750 | /* Spec says data section should be rounded up to page boundary. */ | |
751 | /* If extra space in page is left after data section, fudge data | |
752 | in the header so that the bss section looks smaller by that | |
753 | amount. We'll start the bss section there, and lie to the OS. */ | |
754 | obj_datasec(abfd)->_raw_size | |
755 | = align_power (obj_datasec(abfd)->_raw_size, | |
756 | obj_bsssec(abfd)->alignment_power); | |
757 | execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size, | |
758 | adata(abfd).page_size); | |
759 | data_pad = execp->a_data - obj_datasec(abfd)->_raw_size; | |
760 | /* This code is almost surely botched. It'll only get tested | |
761 | for the case where the application does explicitly set the VMA | |
762 | of the BSS section. */ | |
763 | if (obj_bsssec(abfd)->user_set_vma | |
764 | && (obj_bsssec(abfd)->vma | |
765 | > BFD_ALIGN (obj_datasec(abfd)->vma | |
766 | + obj_datasec(abfd)->_raw_size, | |
767 | adata(abfd).page_size))) | |
768 | { | |
769 | /* Can't play with squeezing into data pages; fix this code. */ | |
770 | abort (); | |
771 | } | |
772 | if (!obj_bsssec(abfd)->user_set_vma) | |
773 | obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma | |
774 | + obj_datasec(abfd)->_raw_size); | |
775 | if (data_pad > obj_bsssec(abfd)->_raw_size) | |
776 | execp->a_bss = 0; | |
777 | else | |
778 | execp->a_bss = obj_bsssec(abfd)->_raw_size - data_pad; | |
779 | } | |
780 | break; | |
781 | case n_magic: | |
782 | { | |
783 | CONST struct aout_backend_data *abdp; | |
784 | file_ptr pos = adata(abfd).exec_bytes_size; | |
785 | bfd_vma vma = 0; | |
786 | int pad; | |
787 | ||
788 | obj_textsec(abfd)->filepos = pos; | |
789 | if (!obj_textsec(abfd)->user_set_vma) | |
790 | obj_textsec(abfd)->vma = vma; | |
791 | else | |
792 | vma = obj_textsec(abfd)->vma; | |
793 | pos += obj_textsec(abfd)->_raw_size; | |
794 | vma += obj_textsec(abfd)->_raw_size; | |
795 | obj_datasec(abfd)->filepos = pos; | |
796 | if (!obj_datasec(abfd)->user_set_vma) | |
797 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
798 | vma = obj_datasec(abfd)->vma; | |
799 | ||
800 | /* Since BSS follows data immediately, see if it needs alignment. */ | |
801 | vma += obj_datasec(abfd)->_raw_size; | |
802 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; | |
803 | obj_datasec(abfd)->_raw_size += pad; | |
804 | pos += obj_datasec(abfd)->_raw_size; | |
805 | ||
806 | if (!obj_bsssec(abfd)->user_set_vma) | |
807 | obj_bsssec(abfd)->vma = vma; | |
808 | else | |
809 | vma = obj_bsssec(abfd)->vma; | |
810 | } | |
811 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
812 | execp->a_data = obj_datasec(abfd)->_raw_size; | |
813 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
814 | N_SET_MAGIC (*execp, NMAGIC); | |
815 | break; | |
816 | default: | |
817 | abort (); | |
818 | } | |
819 | #ifdef BFD_AOUT_DEBUG | |
820 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
821 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, obj_textsec(abfd)->filepos, | |
822 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, obj_datasec(abfd)->filepos, | |
823 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size); | |
824 | #endif | |
825 | } | |
826 | ||
4e41b5aa SC |
827 | /* |
828 | FUNCTION | |
829 | aout_<size>new_section_hook | |
9e2dad8e | 830 | |
4e41b5aa SC |
831 | DESCRIPTION |
832 | Called by the BFD in response to a @code{bfd_make_section} | |
833 | request. | |
834 | ||
835 | EXAMPLE | |
836 | boolean aout_<size>_new_section_hook, | |
9e2dad8e JG |
837 | (bfd *abfd, |
838 | asection *newsect)); | |
6f715d66 | 839 | */ |
7ed4093a | 840 | boolean |
3f7607af | 841 | DEFUN(NAME(aout,new_section_hook),(abfd, newsect), |
9e2dad8e JG |
842 | bfd *abfd AND |
843 | asection *newsect) | |
7ed4093a | 844 | { |
6db82ea7 SC |
845 | /* align to double at least */ |
846 | newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; | |
3f7607af | 847 | |
7ed4093a | 848 | |
6db82ea7 SC |
849 | if (bfd_get_format (abfd) == bfd_object) |
850 | { | |
851 | if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) { | |
852 | obj_textsec(abfd)= newsect; | |
853 | newsect->target_index = N_TEXT | N_EXT; | |
854 | return true; | |
855 | } | |
7ed4093a | 856 | |
6db82ea7 SC |
857 | if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) { |
858 | obj_datasec(abfd) = newsect; | |
859 | newsect->target_index = N_DATA | N_EXT; | |
860 | return true; | |
861 | } | |
7ed4093a | 862 | |
6db82ea7 SC |
863 | if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) { |
864 | obj_bsssec(abfd) = newsect; | |
865 | newsect->target_index = N_BSS | N_EXT; | |
866 | return true; | |
867 | } | |
868 | ||
869 | } | |
7ed4093a | 870 | |
6db82ea7 SC |
871 | /* We allow more than three sections internally */ |
872 | return true; | |
7ed4093a SC |
873 | } |
874 | ||
875 | boolean | |
9e2dad8e JG |
876 | DEFUN(NAME(aout,set_section_contents),(abfd, section, location, offset, count), |
877 | bfd *abfd AND | |
878 | sec_ptr section AND | |
879 | PTR location AND | |
880 | file_ptr offset AND | |
881 | bfd_size_type count) | |
7ed4093a | 882 | { |
7b02b4ed | 883 | file_ptr text_end; |
7b02b4ed | 884 | bfd_size_type text_size; |
ce07dd7c | 885 | |
7ed4093a | 886 | if (abfd->output_has_begun == false) |
9e2dad8e JG |
887 | { /* set by bfd.c handler */ |
888 | switch (abfd->direction) | |
889 | { | |
890 | case read_direction: | |
891 | case no_direction: | |
892 | bfd_error = invalid_operation; | |
893 | return false; | |
ce07dd7c KR |
894 | |
895 | case write_direction: | |
896 | if (NAME(aout,adjust_sizes_and_vmas) (abfd, | |
897 | &text_size, | |
898 | &text_end) == false) | |
899 | return false; | |
9e2dad8e JG |
900 | case both_direction: |
901 | break; | |
12e7087f | 902 | } |
9e2dad8e | 903 | } |
12e7087f | 904 | |
7ed4093a SC |
905 | /* regardless, once we know what we're doing, we might as well get going */ |
906 | if (section != obj_bsssec(abfd)) | |
907 | { | |
908 | bfd_seek (abfd, section->filepos + offset, SEEK_SET); | |
9e2dad8e | 909 | |
7ed4093a SC |
910 | if (count) { |
911 | return (bfd_write ((PTR)location, 1, count, abfd) == count) ? | |
912 | true : false; | |
913 | } | |
6db82ea7 | 914 | return true; |
7ed4093a SC |
915 | } |
916 | return true; | |
917 | } | |
918 | \f | |
919 | /* Classify stabs symbols */ | |
920 | ||
921 | #define sym_in_text_section(sym) \ | |
9e2dad8e | 922 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_TEXT) |
7ed4093a SC |
923 | |
924 | #define sym_in_data_section(sym) \ | |
9e2dad8e | 925 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_DATA) |
7ed4093a SC |
926 | |
927 | #define sym_in_bss_section(sym) \ | |
9e2dad8e | 928 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_BSS) |
7ed4093a SC |
929 | |
930 | /* Symbol is undefined if type is N_UNDF|N_EXT and if it has | |
9e2dad8e JG |
931 | zero in the "value" field. Nonzeroes there are fortrancommon |
932 | symbols. */ | |
7ed4093a | 933 | #define sym_is_undefined(sym) \ |
9e2dad8e | 934 | ((sym)->type == (N_UNDF | N_EXT) && (sym)->symbol.value == 0) |
7ed4093a SC |
935 | |
936 | /* Symbol is a global definition if N_EXT is on and if it has | |
9e2dad8e | 937 | a nonzero type field. */ |
7ed4093a | 938 | #define sym_is_global_defn(sym) \ |
9e2dad8e | 939 | (((sym)->type & N_EXT) && (sym)->type & N_TYPE) |
7ed4093a SC |
940 | |
941 | /* Symbol is debugger info if any bits outside N_TYPE or N_EXT | |
9e2dad8e | 942 | are on. */ |
7ed4093a | 943 | #define sym_is_debugger_info(sym) \ |
9e2dad8e | 944 | ((sym)->type & ~(N_EXT | N_TYPE)) |
7ed4093a SC |
945 | |
946 | #define sym_is_fortrancommon(sym) \ | |
9e2dad8e | 947 | (((sym)->type == (N_EXT)) && (sym)->symbol.value != 0) |
7ed4093a SC |
948 | |
949 | /* Symbol is absolute if it has N_ABS set */ | |
950 | #define sym_is_absolute(sym) \ | |
9e2dad8e | 951 | (((sym)->type & N_TYPE)== N_ABS) |
7ed4093a SC |
952 | |
953 | ||
954 | #define sym_is_indirect(sym) \ | |
9e2dad8e | 955 | (((sym)->type & N_ABS)== N_ABS) |
7ed4093a SC |
956 | |
957 | /* Only in their own functions for ease of debugging; when sym flags have | |
9e2dad8e JG |
958 | stabilised these should be inlined into their (single) caller */ |
959 | ||
7ed4093a SC |
960 | static void |
961 | DEFUN(translate_from_native_sym_flags,(sym_pointer, cache_ptr, abfd), | |
4e41b5aa SC |
962 | struct external_nlist *sym_pointer AND |
963 | aout_symbol_type *cache_ptr AND | |
964 | bfd *abfd) | |
9e2dad8e | 965 | { |
6db82ea7 SC |
966 | switch (cache_ptr->type & N_TYPE) |
967 | { | |
9e2dad8e JG |
968 | case N_SETA: |
969 | case N_SETT: | |
970 | case N_SETD: | |
971 | case N_SETB: | |
6db82ea7 SC |
972 | { |
973 | char *copy = bfd_alloc(abfd, strlen(cache_ptr->symbol.name)+1); | |
974 | asection *section ; | |
975 | asection *into_section; | |
976 | ||
977 | arelent_chain *reloc = (arelent_chain *)bfd_alloc(abfd, sizeof(arelent_chain)); | |
978 | strcpy(copy, cache_ptr->symbol.name); | |
979 | ||
980 | /* Make sure that this bfd has a section with the right contructor | |
981 | name */ | |
982 | section = bfd_get_section_by_name (abfd, copy); | |
983 | if (!section) | |
984 | section = bfd_make_section(abfd,copy); | |
985 | ||
986 | /* Build a relocation entry for the constructor */ | |
987 | switch ( (cache_ptr->type & N_TYPE) ) | |
988 | { | |
989 | case N_SETA: | |
990 | into_section = &bfd_abs_section; | |
991 | break; | |
992 | case N_SETT: | |
993 | into_section = (asection *)obj_textsec(abfd); | |
994 | break; | |
995 | case N_SETD: | |
996 | into_section = (asection *)obj_datasec(abfd); | |
997 | break; | |
998 | case N_SETB: | |
999 | into_section = (asection *)obj_bsssec(abfd); | |
1000 | break; | |
1001 | default: | |
1002 | abort(); | |
1003 | } | |
1004 | ||
1005 | /* Build a relocation pointing into the constuctor section | |
1006 | pointing at the symbol in the set vector specified */ | |
1007 | ||
1008 | reloc->relent.addend = cache_ptr->symbol.value; | |
1009 | cache_ptr->symbol.section = into_section->symbol->section; | |
1010 | reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr; | |
1011 | ||
c618de01 | 1012 | |
6db82ea7 SC |
1013 | /* We modify the symbol to belong to a section depending upon the |
1014 | name of the symbol - probably __CTOR__ or __DTOR__ but we don't | |
1015 | really care, and add to the size of the section to contain a | |
1016 | pointer to the symbol. Build a reloc entry to relocate to this | |
1017 | symbol attached to this section. */ | |
c618de01 | 1018 | |
6db82ea7 SC |
1019 | section->flags = SEC_CONSTRUCTOR; |
1020 | ||
c618de01 | 1021 | |
6db82ea7 SC |
1022 | section->reloc_count++; |
1023 | section->alignment_power = 2; | |
1024 | ||
1025 | reloc->next = section->constructor_chain; | |
1026 | section->constructor_chain = reloc; | |
1027 | reloc->relent.address = section->_raw_size; | |
1028 | section->_raw_size += sizeof(int *); | |
1029 | ||
1030 | reloc->relent.howto = howto_table_ext + CTOR_TABLE_RELOC_IDX; | |
1031 | cache_ptr->symbol.flags |= BSF_DEBUGGING | BSF_CONSTRUCTOR; | |
1032 | } | |
9e2dad8e | 1033 | break; |
7ed4093a | 1034 | default: |
88dfcd68 | 1035 | if (cache_ptr->type == N_WARNING) |
6db82ea7 SC |
1036 | { |
1037 | /* This symbol is the text of a warning message, the next symbol | |
1038 | is the symbol to associate the warning with */ | |
1039 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
88dfcd68 | 1040 | cache_ptr->symbol.value = (bfd_vma)((cache_ptr+1)); |
6db82ea7 SC |
1041 | /* We furgle with the next symbol in place. We don't want it to be undefined, we'll trample the type */ |
1042 | (sym_pointer+1)->e_type[0] = 0xff; | |
88dfcd68 SC |
1043 | break; |
1044 | } | |
6db82ea7 SC |
1045 | if ((cache_ptr->type | N_EXT) == (N_INDR | N_EXT)) { |
1046 | /* Two symbols in a row for an INDR message. The first symbol | |
1047 | contains the name we will match, the second symbol contains the | |
1048 | name the first name is translated into. It is supplied to us | |
1049 | undefined. This is good, since we want to pull in any files which | |
1050 | define it */ | |
1051 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT; | |
1052 | cache_ptr->symbol.value = (bfd_vma)((cache_ptr+1)); | |
1053 | cache_ptr->symbol.section = &bfd_und_section; | |
1054 | break; | |
1055 | } | |
88dfcd68 SC |
1056 | |
1057 | ||
7ed4093a | 1058 | if (sym_is_debugger_info (cache_ptr)) { |
6db82ea7 SC |
1059 | cache_ptr->symbol.flags = BSF_DEBUGGING ; |
1060 | /* Work out the section correct for this symbol */ | |
1061 | switch (cache_ptr->type & N_TYPE) | |
1062 | { | |
1063 | case N_TEXT: | |
1064 | case N_FN: | |
1065 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1066 | cache_ptr->symbol.value -= obj_textsec(abfd)->vma; | |
1067 | break; | |
1068 | case N_DATA: | |
1069 | cache_ptr->symbol.value -= obj_datasec(abfd)->vma; | |
1070 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1071 | break; | |
1072 | case N_BSS : | |
1073 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1074 | cache_ptr->symbol.value -= obj_bsssec(abfd)->vma; | |
1075 | break; | |
1076 | default: | |
1077 | case N_ABS: | |
88dfcd68 | 1078 | |
6db82ea7 SC |
1079 | cache_ptr->symbol.section = &bfd_abs_section; |
1080 | break; | |
7ed4093a | 1081 | } |
6db82ea7 SC |
1082 | } |
1083 | else { | |
1084 | ||
1085 | if (sym_is_fortrancommon (cache_ptr)) | |
1086 | { | |
1087 | cache_ptr->symbol.flags = 0; | |
1088 | cache_ptr->symbol.section = &bfd_com_section; | |
7ed4093a SC |
1089 | } |
1090 | else { | |
6db82ea7 SC |
1091 | |
1092 | ||
1093 | } | |
88dfcd68 | 1094 | |
7ed4093a SC |
1095 | /* In a.out, the value of a symbol is always relative to the |
1096 | * start of the file, if this is a data symbol we'll subtract | |
1097 | * the size of the text section to get the section relative | |
1098 | * value. If this is a bss symbol (which would be strange) | |
1099 | * we'll subtract the size of the previous two sections | |
1100 | * to find the section relative address. | |
1101 | */ | |
88dfcd68 | 1102 | |
7ed4093a | 1103 | if (sym_in_text_section (cache_ptr)) { |
6db82ea7 SC |
1104 | cache_ptr->symbol.value -= obj_textsec(abfd)->vma; |
1105 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1106 | } | |
7ed4093a | 1107 | else if (sym_in_data_section (cache_ptr)){ |
6db82ea7 SC |
1108 | cache_ptr->symbol.value -= obj_datasec(abfd)->vma; |
1109 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1110 | } | |
7ed4093a | 1111 | else if (sym_in_bss_section(cache_ptr)) { |
6db82ea7 SC |
1112 | cache_ptr->symbol.section = obj_bsssec (abfd); |
1113 | cache_ptr->symbol.value -= obj_bsssec(abfd)->vma; | |
1114 | } | |
1115 | else if (sym_is_undefined (cache_ptr)) { | |
1116 | cache_ptr->symbol.flags = 0; | |
1117 | cache_ptr->symbol.section = &bfd_und_section; | |
1118 | } | |
1119 | else if (sym_is_absolute(cache_ptr)) | |
1120 | { | |
1121 | cache_ptr->symbol.section = &bfd_abs_section; | |
7ed4093a | 1122 | } |
6db82ea7 SC |
1123 | |
1124 | if (sym_is_global_defn (cache_ptr)) | |
1125 | { | |
1126 | cache_ptr->symbol.flags = BSF_GLOBAL | BSF_EXPORT; | |
1127 | } | |
1128 | else | |
1129 | { | |
1130 | cache_ptr->symbol.flags = BSF_LOCAL; | |
7ed4093a SC |
1131 | } |
1132 | } | |
7ed4093a SC |
1133 | } |
1134 | } | |
1135 | ||
6db82ea7 SC |
1136 | |
1137 | ||
7ed4093a SC |
1138 | static void |
1139 | DEFUN(translate_to_native_sym_flags,(sym_pointer, cache_ptr, abfd), | |
1140 | struct external_nlist *sym_pointer AND | |
1141 | asymbol *cache_ptr AND | |
1142 | bfd *abfd) | |
1143 | { | |
1144 | bfd_vma value = cache_ptr->value; | |
1145 | ||
10dea9ed DHW |
1146 | /* mask out any existing type bits in case copying from one section |
1147 | to another */ | |
1148 | sym_pointer->e_type[0] &= ~N_TYPE; | |
1149 | ||
6db82ea7 | 1150 | if (bfd_get_output_section(cache_ptr) == obj_bsssec (abfd)) { |
7ed4093a SC |
1151 | sym_pointer->e_type[0] |= N_BSS; |
1152 | } | |
6db82ea7 | 1153 | else if (bfd_get_output_section(cache_ptr) == obj_datasec (abfd)) { |
7ed4093a SC |
1154 | sym_pointer->e_type[0] |= N_DATA; |
1155 | } | |
6db82ea7 | 1156 | else if (bfd_get_output_section(cache_ptr) == obj_textsec (abfd)) { |
7ed4093a SC |
1157 | sym_pointer->e_type[0] |= N_TEXT; |
1158 | } | |
6db82ea7 SC |
1159 | else if (bfd_get_output_section(cache_ptr) == &bfd_abs_section) |
1160 | { | |
7ed4093a SC |
1161 | sym_pointer->e_type[0] |= N_ABS; |
1162 | } | |
6db82ea7 SC |
1163 | else if (bfd_get_output_section(cache_ptr) == &bfd_und_section) |
1164 | { | |
7ed4093a SC |
1165 | sym_pointer->e_type[0] = (N_UNDF | N_EXT); |
1166 | } | |
6db82ea7 SC |
1167 | else if (bfd_get_output_section(cache_ptr) == &bfd_com_section) { |
1168 | sym_pointer->e_type[0] = (N_UNDF | N_EXT); | |
1169 | } | |
1170 | else { | |
e7b4046c SC |
1171 | if (cache_ptr->section->output_section) |
1172 | { | |
1173 | ||
1174 | bfd_error_vector.nonrepresentable_section(abfd, | |
1175 | bfd_get_output_section(cache_ptr)->name); | |
1176 | } | |
1177 | else | |
1178 | { | |
1179 | bfd_error_vector.nonrepresentable_section(abfd, | |
1180 | cache_ptr->section->name); | |
1181 | ||
1182 | } | |
1183 | ||
7ed4093a | 1184 | } |
6db82ea7 | 1185 | /* Turn the symbol from section relative to absolute again */ |
7ed4093a | 1186 | |
6db82ea7 SC |
1187 | value += cache_ptr->section->output_section->vma + cache_ptr->section->output_offset ; |
1188 | ||
1189 | ||
1190 | if (cache_ptr->flags & (BSF_WARNING)) { | |
1191 | (sym_pointer+1)->e_type[0] = 1; | |
1192 | } | |
1193 | ||
1194 | if (cache_ptr->flags & (BSF_GLOBAL | BSF_EXPORT)) { | |
7ed4093a SC |
1195 | sym_pointer->e_type[0] |= N_EXT; |
1196 | } | |
6db82ea7 | 1197 | if (cache_ptr->flags & BSF_DEBUGGING) { |
7ed4093a SC |
1198 | sym_pointer->e_type [0]= ((aout_symbol_type *)cache_ptr)->type; |
1199 | } | |
6db82ea7 | 1200 | |
7ed4093a SC |
1201 | PUT_WORD(abfd, value, sym_pointer->e_value); |
1202 | } | |
1203 | \f | |
1204 | /* Native-level interface to symbols. */ | |
1205 | ||
1206 | /* We read the symbols into a buffer, which is discarded when this | |
1207 | function exits. We read the strings into a buffer large enough to | |
1208 | hold them all plus all the cached symbol entries. */ | |
1209 | ||
1210 | asymbol * | |
1211 | DEFUN(NAME(aout,make_empty_symbol),(abfd), | |
1212 | bfd *abfd) | |
9e2dad8e JG |
1213 | { |
1214 | aout_symbol_type *new = | |
1215 | (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type)); | |
1216 | new->symbol.the_bfd = abfd; | |
7ed4093a | 1217 | |
9e2dad8e JG |
1218 | return &new->symbol; |
1219 | } | |
7ed4093a SC |
1220 | |
1221 | boolean | |
1222 | DEFUN(NAME(aout,slurp_symbol_table),(abfd), | |
1223 | bfd *abfd) | |
9e2dad8e JG |
1224 | { |
1225 | bfd_size_type symbol_size; | |
1226 | bfd_size_type string_size; | |
1227 | unsigned char string_chars[BYTES_IN_WORD]; | |
1228 | struct external_nlist *syms; | |
1229 | char *strings; | |
1230 | aout_symbol_type *cached; | |
7ed4093a | 1231 | |
9e2dad8e JG |
1232 | /* If there's no work to be done, don't do any */ |
1233 | if (obj_aout_symbols (abfd) != (aout_symbol_type *)NULL) return true; | |
1234 | symbol_size = exec_hdr(abfd)->a_syms; | |
1235 | if (symbol_size == 0) { | |
1236 | bfd_error = no_symbols; | |
1237 | return false; | |
1238 | } | |
7ed4093a | 1239 | |
9e2dad8e JG |
1240 | bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET); |
1241 | if (bfd_read ((PTR)string_chars, BYTES_IN_WORD, 1, abfd) != BYTES_IN_WORD) | |
1242 | return false; | |
1243 | string_size = GET_WORD (abfd, string_chars); | |
7ed4093a | 1244 | |
9e2dad8e JG |
1245 | strings =(char *) bfd_alloc(abfd, string_size + 1); |
1246 | cached = (aout_symbol_type *) | |
1247 | bfd_zalloc(abfd, (bfd_size_type)(bfd_get_symcount (abfd) * sizeof(aout_symbol_type))); | |
1248 | ||
1249 | /* malloc this, so we can free it if simply. The symbol caching | |
1250 | might want to allocate onto the bfd's obstack */ | |
98d43107 | 1251 | syms = (struct external_nlist *) bfd_xmalloc(symbol_size); |
9e2dad8e JG |
1252 | bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET); |
1253 | if (bfd_read ((PTR)syms, 1, symbol_size, abfd) != symbol_size) { | |
1254 | bailout: | |
1255 | if (syms) free (syms); | |
1256 | if (cached) bfd_release (abfd, cached); | |
1257 | if (strings)bfd_release (abfd, strings); | |
1258 | return false; | |
1259 | } | |
7ed4093a | 1260 | |
9e2dad8e JG |
1261 | bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET); |
1262 | if (bfd_read ((PTR)strings, 1, string_size, abfd) != string_size) { | |
1263 | goto bailout; | |
1264 | } | |
7ed4093a | 1265 | |
9e2dad8e JG |
1266 | /* OK, now walk the new symtable, cacheing symbol properties */ |
1267 | { | |
1268 | register struct external_nlist *sym_pointer; | |
1269 | register struct external_nlist *sym_end = syms + bfd_get_symcount (abfd); | |
1270 | register aout_symbol_type *cache_ptr = cached; | |
7ed4093a | 1271 | |
9e2dad8e JG |
1272 | /* Run through table and copy values */ |
1273 | for (sym_pointer = syms, cache_ptr = cached; | |
1274 | sym_pointer < sym_end; sym_pointer++, cache_ptr++) | |
1275 | { | |
1276 | bfd_vma x = GET_WORD(abfd, sym_pointer->e_strx); | |
1277 | cache_ptr->symbol.the_bfd = abfd; | |
1278 | if (x) | |
1279 | cache_ptr->symbol.name = x + strings; | |
1280 | else | |
1281 | cache_ptr->symbol.name = (char *)NULL; | |
7ed4093a | 1282 | |
9e2dad8e JG |
1283 | cache_ptr->symbol.value = GET_SWORD(abfd, sym_pointer->e_value); |
1284 | cache_ptr->desc = bfd_get_16(abfd, sym_pointer->e_desc); | |
1285 | cache_ptr->other =bfd_get_8(abfd, sym_pointer->e_other); | |
1286 | cache_ptr->type = bfd_get_8(abfd, sym_pointer->e_type); | |
1287 | cache_ptr->symbol.udata = 0; | |
1288 | translate_from_native_sym_flags (sym_pointer, cache_ptr, abfd); | |
1289 | } | |
1290 | } | |
7ed4093a | 1291 | |
9e2dad8e JG |
1292 | obj_aout_symbols (abfd) = cached; |
1293 | free((PTR)syms); | |
7ed4093a | 1294 | |
9e2dad8e JG |
1295 | return true; |
1296 | } | |
7ed4093a SC |
1297 | |
1298 | ||
1299 | void | |
1300 | DEFUN(NAME(aout,write_syms),(abfd), | |
1301 | bfd *abfd) | |
1302 | { | |
1303 | unsigned int count ; | |
1304 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1305 | ||
1306 | bfd_size_type stindex = BYTES_IN_WORD; /* initial string length */ | |
1307 | ||
1308 | for (count = 0; count < bfd_get_symcount (abfd); count++) { | |
1309 | asymbol *g = generic[count]; | |
1310 | struct external_nlist nsp; | |
6db82ea7 SC |
1311 | |
1312 | ||
7ed4093a SC |
1313 | if (g->name) { |
1314 | unsigned int length = strlen(g->name) +1; | |
1315 | PUT_WORD (abfd, stindex, (unsigned char *)nsp.e_strx); | |
1316 | stindex += length; | |
1317 | } | |
6db82ea7 SC |
1318 | else |
1319 | ||
1320 | { | |
7ed4093a SC |
1321 | PUT_WORD (abfd, 0, (unsigned char *)nsp.e_strx); |
1322 | } | |
1323 | ||
1324 | if (g->the_bfd->xvec->flavour == abfd->xvec->flavour) | |
1325 | { | |
1326 | bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc); | |
1327 | bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other); | |
1328 | bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type); | |
1329 | } | |
1330 | else | |
1331 | { | |
1332 | bfd_h_put_16(abfd,0, nsp.e_desc); | |
1333 | bfd_h_put_8(abfd, 0, nsp.e_other); | |
1334 | bfd_h_put_8(abfd, 0, nsp.e_type); | |
1335 | } | |
7b02b4ed | 1336 | |
7d003262 | 1337 | translate_to_native_sym_flags (&nsp, g, abfd); |
7b02b4ed JG |
1338 | |
1339 | bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd); | |
7ed4093a SC |
1340 | } |
1341 | ||
7ed4093a | 1342 | /* Now output the strings. Be sure to put string length into correct |
7b02b4ed | 1343 | byte ordering before writing it. */ |
7ed4093a SC |
1344 | { |
1345 | char buffer[BYTES_IN_WORD]; | |
1346 | PUT_WORD (abfd, stindex, (unsigned char *)buffer); | |
1347 | ||
1348 | bfd_write((PTR)buffer, 1, BYTES_IN_WORD, abfd); | |
1349 | } | |
1350 | generic = bfd_get_outsymbols(abfd); | |
1351 | for (count = 0; count < bfd_get_symcount(abfd); count++) | |
1352 | { | |
1353 | asymbol *g = *(generic++); | |
1354 | ||
1355 | if (g->name) | |
1356 | { | |
1357 | size_t length = strlen(g->name)+1; | |
1358 | bfd_write((PTR)g->name, 1, length, abfd); | |
1359 | } | |
c618de01 | 1360 | g->KEEPIT = (KEEPITTYPE) count; |
7ed4093a SC |
1361 | } |
1362 | } | |
1363 | ||
1364 | ||
1365 | ||
1366 | unsigned int | |
1367 | DEFUN(NAME(aout,get_symtab),(abfd, location), | |
1368 | bfd *abfd AND | |
1369 | asymbol **location) | |
3f7607af | 1370 | { |
7ed4093a SC |
1371 | unsigned int counter = 0; |
1372 | aout_symbol_type *symbase; | |
ce07dd7c | 1373 | |
7ed4093a | 1374 | if (!NAME(aout,slurp_symbol_table)(abfd)) return 0; |
ce07dd7c | 1375 | |
7ed4093a SC |
1376 | for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);) |
1377 | *(location++) = (asymbol *)( symbase++); | |
1378 | *location++ =0; | |
ce07dd7c | 1379 | return bfd_get_symcount (abfd); |
3f7607af | 1380 | } |
7ed4093a SC |
1381 | |
1382 | \f | |
1383 | /* Standard reloc stuff */ | |
1384 | /* Output standard relocation information to a file in target byte order. */ | |
1385 | ||
1386 | void | |
1387 | DEFUN(NAME(aout,swap_std_reloc_out),(abfd, g, natptr), | |
1388 | bfd *abfd AND | |
1389 | arelent *g AND | |
1390 | struct reloc_std_external *natptr) | |
3f7607af | 1391 | { |
6db82ea7 SC |
1392 | int r_index; |
1393 | asymbol *sym = *(g->sym_ptr_ptr); | |
1394 | int r_extern; | |
1395 | unsigned int r_length; | |
1396 | int r_pcrel; | |
1397 | int r_baserel, r_jmptable, r_relative; | |
1398 | unsigned int r_addend; | |
1399 | asection *output_section = sym->section->output_section; | |
ce07dd7c | 1400 | |
6db82ea7 | 1401 | PUT_WORD(abfd, g->address, natptr->r_address); |
ce07dd7c | 1402 | |
6db82ea7 SC |
1403 | r_length = g->howto->size ; /* Size as a power of two */ |
1404 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
1405 | /* r_baserel, r_jmptable, r_relative??? FIXME-soon */ | |
1406 | r_baserel = 0; | |
1407 | r_jmptable = 0; | |
1408 | r_relative = 0; | |
7ed4093a | 1409 | |
6db82ea7 | 1410 | r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; |
7ed4093a | 1411 | |
6db82ea7 SC |
1412 | /* name was clobbered by aout_write_syms to be symbol index */ |
1413 | ||
2768b3f7 SC |
1414 | /* If this relocation is relative to a symbol then set the |
1415 | r_index to the symbols index, and the r_extern bit. | |
1416 | ||
1417 | Absolute symbols can come in in two ways, either as an offset | |
1418 | from the abs section, or as a symbol which has an abs value. | |
1419 | check for that here | |
1420 | */ | |
1421 | ||
1422 | ||
ce07dd7c KR |
1423 | if (output_section == &bfd_com_section |
1424 | || output_section == &bfd_abs_section | |
1425 | || output_section == &bfd_und_section) | |
1426 | { | |
2768b3f7 SC |
1427 | if (bfd_abs_section.symbol == sym) |
1428 | { | |
1429 | /* Whoops, looked like an abs symbol, but is really an offset | |
1430 | from the abs section */ | |
1431 | r_index = 0; | |
1432 | r_extern = 0; | |
1433 | } | |
1434 | else | |
1435 | { | |
1436 | /* Fill in symbol */ | |
1437 | r_extern = 1; | |
1438 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); | |
1439 | ||
1440 | } | |
ce07dd7c | 1441 | } |
6db82ea7 | 1442 | else |
ce07dd7c KR |
1443 | { |
1444 | /* Just an ordinary section */ | |
1445 | r_extern = 0; | |
1446 | r_index = output_section->target_index; | |
1447 | } | |
1448 | ||
6db82ea7 SC |
1449 | /* now the fun stuff */ |
1450 | if (abfd->xvec->header_byteorder_big_p != false) { | |
7ed4093a SC |
1451 | natptr->r_index[0] = r_index >> 16; |
1452 | natptr->r_index[1] = r_index >> 8; | |
1453 | natptr->r_index[2] = r_index; | |
1454 | natptr->r_type[0] = | |
6db82ea7 SC |
1455 | (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0) |
1456 | | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0) | |
1457 | | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0) | |
1458 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0) | |
1459 | | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0) | |
1460 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG); | |
7ed4093a | 1461 | } else { |
6db82ea7 SC |
1462 | natptr->r_index[2] = r_index >> 16; |
1463 | natptr->r_index[1] = r_index >> 8; | |
1464 | natptr->r_index[0] = r_index; | |
1465 | natptr->r_type[0] = | |
1466 | (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0) | |
7ed4093a | 1467 | | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0) |
6db82ea7 SC |
1468 | | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0) |
1469 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0) | |
1470 | | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0) | |
1471 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
1472 | } | |
3f7607af | 1473 | } |
7ed4093a SC |
1474 | |
1475 | ||
1476 | /* Extended stuff */ | |
1477 | /* Output extended relocation information to a file in target byte order. */ | |
1478 | ||
1479 | void | |
1480 | DEFUN(NAME(aout,swap_ext_reloc_out),(abfd, g, natptr), | |
1481 | bfd *abfd AND | |
1482 | arelent *g AND | |
1483 | register struct reloc_ext_external *natptr) | |
3f7607af | 1484 | { |
6db82ea7 SC |
1485 | int r_index; |
1486 | int r_extern; | |
1487 | unsigned int r_type; | |
1488 | unsigned int r_addend; | |
1489 | asymbol *sym = *(g->sym_ptr_ptr); | |
1490 | asection *output_section = sym->section->output_section; | |
1491 | ||
1492 | PUT_WORD (abfd, g->address, natptr->r_address); | |
7ed4093a | 1493 | |
6db82ea7 | 1494 | r_type = (unsigned int) g->howto->type; |
7ed4093a | 1495 | |
6db82ea7 | 1496 | r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; |
7ed4093a | 1497 | |
7ed4093a | 1498 | |
2768b3f7 SC |
1499 | /* If this relocation is relative to a symbol then set the |
1500 | r_index to the symbols index, and the r_extern bit. | |
1501 | ||
1502 | Absolute symbols can come in in two ways, either as an offset | |
1503 | from the abs section, or as a symbol which has an abs value. | |
1504 | check for that here | |
1505 | */ | |
1506 | ||
1507 | if (output_section == &bfd_com_section | |
1508 | || output_section == &bfd_abs_section | |
1509 | || output_section == &bfd_und_section) | |
6db82ea7 | 1510 | { |
2768b3f7 SC |
1511 | if (bfd_abs_section.symbol == sym) |
1512 | { | |
1513 | /* Whoops, looked like an abs symbol, but is really an offset | |
1514 | from the abs section */ | |
1515 | r_index = 0; | |
1516 | r_extern = 0; | |
1517 | } | |
1518 | else | |
1519 | { | |
1520 | r_extern = 1; | |
1521 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); | |
1522 | } | |
6db82ea7 SC |
1523 | } |
1524 | else | |
1525 | { | |
1526 | /* Just an ordinary section */ | |
1527 | r_extern = 0; | |
1528 | r_index = output_section->target_index; | |
1529 | } | |
1530 | ||
1531 | ||
7ed4093a SC |
1532 | /* now the fun stuff */ |
1533 | if (abfd->xvec->header_byteorder_big_p != false) { | |
2768b3f7 SC |
1534 | natptr->r_index[0] = r_index >> 16; |
1535 | natptr->r_index[1] = r_index >> 8; | |
1536 | natptr->r_index[2] = r_index; | |
1537 | natptr->r_type[0] = | |
1538 | (r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0) | |
1539 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG); | |
1540 | } else { | |
1541 | natptr->r_index[2] = r_index >> 16; | |
1542 | natptr->r_index[1] = r_index >> 8; | |
1543 | natptr->r_index[0] = r_index; | |
1544 | natptr->r_type[0] = | |
1545 | (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0) | |
1546 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
1547 | } | |
7ed4093a SC |
1548 | |
1549 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
1550 | } | |
1551 | ||
6db82ea7 SC |
1552 | /* BFD deals internally with all things based from the section they're |
1553 | in. so, something in 10 bytes into a text section with a base of | |
1554 | 50 would have a symbol (.text+10) and know .text vma was 50. | |
1555 | ||
1556 | Aout keeps all it's symbols based from zero, so the symbol would | |
1557 | contain 60. This macro subs the base of each section from the value | |
1558 | to give the true offset from the section */ | |
1559 | ||
1560 | ||
7ed4093a SC |
1561 | #define MOVE_ADDRESS(ad) \ |
1562 | if (r_extern) { \ | |
6db82ea7 SC |
1563 | /* undefined symbol */ \ |
1564 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
1565 | cache_ptr->addend = ad; \ | |
1566 | } else { \ | |
1567 | /* defined, section relative. replace symbol with pointer to \ | |
1568 | symbol which points to section */ \ | |
7ed4093a SC |
1569 | switch (r_index) { \ |
1570 | case N_TEXT: \ | |
1571 | case N_TEXT | N_EXT: \ | |
6db82ea7 | 1572 | cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
1573 | cache_ptr->addend = ad - su->textsec->vma; \ |
1574 | break; \ | |
1575 | case N_DATA: \ | |
1576 | case N_DATA | N_EXT: \ | |
6db82ea7 | 1577 | cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
1578 | cache_ptr->addend = ad - su->datasec->vma; \ |
1579 | break; \ | |
1580 | case N_BSS: \ | |
1581 | case N_BSS | N_EXT: \ | |
6db82ea7 | 1582 | cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
1583 | cache_ptr->addend = ad - su->bsssec->vma; \ |
1584 | break; \ | |
6db82ea7 | 1585 | default: \ |
7ed4093a SC |
1586 | case N_ABS: \ |
1587 | case N_ABS | N_EXT: \ | |
6db82ea7 SC |
1588 | cache_ptr->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr; \ |
1589 | cache_ptr->addend = ad; \ | |
7ed4093a SC |
1590 | break; \ |
1591 | } \ | |
1592 | } \ | |
1593 | ||
1594 | void | |
1595 | DEFUN(NAME(aout,swap_ext_reloc_in), (abfd, bytes, cache_ptr, symbols), | |
1596 | bfd *abfd AND | |
1597 | struct reloc_ext_external *bytes AND | |
1598 | arelent *cache_ptr AND | |
1599 | asymbol **symbols) | |
1600 | { | |
1601 | int r_index; | |
1602 | int r_extern; | |
1603 | unsigned int r_type; | |
6db82ea7 | 1604 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
7ed4093a SC |
1605 | |
1606 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
1607 | ||
1608 | /* now the fun stuff */ | |
1609 | if (abfd->xvec->header_byteorder_big_p != false) { | |
1610 | r_index = (bytes->r_index[0] << 16) | |
1611 | | (bytes->r_index[1] << 8) | |
1612 | | bytes->r_index[2]; | |
1613 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
1614 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
1615 | >> RELOC_EXT_BITS_TYPE_SH_BIG; | |
1616 | } else { | |
1617 | r_index = (bytes->r_index[2] << 16) | |
1618 | | (bytes->r_index[1] << 8) | |
1619 | | bytes->r_index[0]; | |
1620 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
1621 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
1622 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE; | |
1623 | } | |
1624 | ||
1625 | cache_ptr->howto = howto_table_ext + r_type; | |
6db82ea7 | 1626 | MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend)); |
7ed4093a SC |
1627 | } |
1628 | ||
1629 | void | |
1630 | DEFUN(NAME(aout,swap_std_reloc_in), (abfd, bytes, cache_ptr, symbols), | |
1631 | bfd *abfd AND | |
1632 | struct reloc_std_external *bytes AND | |
1633 | arelent *cache_ptr AND | |
1634 | asymbol **symbols) | |
1635 | { | |
1636 | int r_index; | |
1637 | int r_extern; | |
1638 | unsigned int r_length; | |
1639 | int r_pcrel; | |
1640 | int r_baserel, r_jmptable, r_relative; | |
6db82ea7 | 1641 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
7ed4093a SC |
1642 | |
1643 | cache_ptr->address = (int32_type)(bfd_h_get_32 (abfd, bytes->r_address)); | |
1644 | ||
1645 | /* now the fun stuff */ | |
1646 | if (abfd->xvec->header_byteorder_big_p != false) { | |
1647 | r_index = (bytes->r_index[0] << 16) | |
1648 | | (bytes->r_index[1] << 8) | |
1649 | | bytes->r_index[2]; | |
1650 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
1651 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
1652 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
1653 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
1654 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
1655 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
1656 | >> RELOC_STD_BITS_LENGTH_SH_BIG; | |
1657 | } else { | |
1658 | r_index = (bytes->r_index[2] << 16) | |
1659 | | (bytes->r_index[1] << 8) | |
1660 | | bytes->r_index[0]; | |
1661 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
1662 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
1663 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
1664 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
1665 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
1666 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
1667 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE; | |
1668 | } | |
1669 | ||
1670 | cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel; | |
1671 | /* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */ | |
1672 | ||
1673 | MOVE_ADDRESS(0); | |
1674 | } | |
1675 | ||
1676 | /* Reloc hackery */ | |
1677 | ||
1678 | boolean | |
1679 | DEFUN(NAME(aout,slurp_reloc_table),(abfd, asect, symbols), | |
1680 | bfd *abfd AND | |
1681 | sec_ptr asect AND | |
1682 | asymbol **symbols) | |
1683 | { | |
1684 | unsigned int count; | |
1685 | bfd_size_type reloc_size; | |
1686 | PTR relocs; | |
1687 | arelent *reloc_cache; | |
1688 | size_t each_size; | |
1689 | ||
1690 | if (asect->relocation) return true; | |
1691 | ||
1692 | if (asect->flags & SEC_CONSTRUCTOR) return true; | |
1693 | ||
1694 | if (asect == obj_datasec (abfd)) { | |
1695 | reloc_size = exec_hdr(abfd)->a_drsize; | |
1696 | goto doit; | |
1697 | } | |
1698 | ||
1699 | if (asect == obj_textsec (abfd)) { | |
1700 | reloc_size = exec_hdr(abfd)->a_trsize; | |
1701 | goto doit; | |
1702 | } | |
1703 | ||
1704 | bfd_error = invalid_operation; | |
1705 | return false; | |
1706 | ||
1707 | doit: | |
1708 | bfd_seek (abfd, asect->rel_filepos, SEEK_SET); | |
1709 | each_size = obj_reloc_entry_size (abfd); | |
1710 | ||
1711 | count = reloc_size / each_size; | |
1712 | ||
1713 | ||
1714 | reloc_cache = (arelent *) bfd_zalloc (abfd, (size_t)(count * sizeof | |
1715 | (arelent))); | |
1716 | if (!reloc_cache) { | |
1717 | nomem: | |
1718 | bfd_error = no_memory; | |
1719 | return false; | |
1720 | } | |
1721 | ||
1722 | relocs = (PTR) bfd_alloc (abfd, reloc_size); | |
1723 | if (!relocs) { | |
1724 | bfd_release (abfd, reloc_cache); | |
1725 | goto nomem; | |
1726 | } | |
1727 | ||
1728 | if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) { | |
1729 | bfd_release (abfd, relocs); | |
1730 | bfd_release (abfd, reloc_cache); | |
1731 | bfd_error = system_call_error; | |
1732 | return false; | |
1733 | } | |
1734 | ||
1735 | if (each_size == RELOC_EXT_SIZE) { | |
1736 | register struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; | |
1737 | unsigned int counter = 0; | |
1738 | arelent *cache_ptr = reloc_cache; | |
1739 | ||
1740 | for (; counter < count; counter++, rptr++, cache_ptr++) { | |
1741 | NAME(aout,swap_ext_reloc_in)(abfd, rptr, cache_ptr, symbols); | |
1742 | } | |
1743 | } else { | |
1744 | register struct reloc_std_external *rptr = (struct reloc_std_external*) relocs; | |
1745 | unsigned int counter = 0; | |
1746 | arelent *cache_ptr = reloc_cache; | |
1747 | ||
1748 | for (; counter < count; counter++, rptr++, cache_ptr++) { | |
1749 | NAME(aout,swap_std_reloc_in)(abfd, rptr, cache_ptr, symbols); | |
1750 | } | |
1751 | ||
1752 | } | |
1753 | ||
1754 | bfd_release (abfd,relocs); | |
1755 | asect->relocation = reloc_cache; | |
1756 | asect->reloc_count = count; | |
1757 | return true; | |
1758 | } | |
1759 | ||
1760 | ||
1761 | ||
1762 | /* Write out a relocation section into an object file. */ | |
1763 | ||
1764 | boolean | |
1765 | DEFUN(NAME(aout,squirt_out_relocs),(abfd, section), | |
1766 | bfd *abfd AND | |
1767 | asection *section) | |
1768 | { | |
1769 | arelent **generic; | |
1770 | unsigned char *native, *natptr; | |
1771 | size_t each_size; | |
1772 | ||
1773 | unsigned int count = section->reloc_count; | |
1774 | size_t natsize; | |
1775 | ||
1776 | if (count == 0) return true; | |
1777 | ||
1778 | each_size = obj_reloc_entry_size (abfd); | |
1779 | natsize = each_size * count; | |
1780 | native = (unsigned char *) bfd_zalloc (abfd, natsize); | |
1781 | if (!native) { | |
1782 | bfd_error = no_memory; | |
1783 | return false; | |
1784 | } | |
1785 | ||
1786 | generic = section->orelocation; | |
1787 | ||
1788 | if (each_size == RELOC_EXT_SIZE) | |
1789 | { | |
1790 | for (natptr = native; | |
1791 | count != 0; | |
1792 | --count, natptr += each_size, ++generic) | |
1793 | NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr); | |
1794 | } | |
1795 | else | |
1796 | { | |
1797 | for (natptr = native; | |
1798 | count != 0; | |
1799 | --count, natptr += each_size, ++generic) | |
1800 | NAME(aout,swap_std_reloc_out)(abfd, *generic, (struct reloc_std_external *)natptr); | |
1801 | } | |
1802 | ||
1803 | if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) { | |
1804 | bfd_release(abfd, native); | |
1805 | return false; | |
1806 | } | |
1807 | bfd_release (abfd, native); | |
1808 | ||
1809 | return true; | |
1810 | } | |
1811 | ||
1812 | /* This is stupid. This function should be a boolean predicate */ | |
1813 | unsigned int | |
1814 | DEFUN(NAME(aout,canonicalize_reloc),(abfd, section, relptr, symbols), | |
1815 | bfd *abfd AND | |
1816 | sec_ptr section AND | |
1817 | arelent **relptr AND | |
1818 | asymbol **symbols) | |
1819 | { | |
1820 | arelent *tblptr = section->relocation; | |
1821 | unsigned int count; | |
1822 | ||
1823 | if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols))) | |
1824 | return 0; | |
1825 | ||
1826 | if (section->flags & SEC_CONSTRUCTOR) { | |
1827 | arelent_chain *chain = section->constructor_chain; | |
1828 | for (count = 0; count < section->reloc_count; count ++) { | |
1829 | *relptr ++ = &chain->relent; | |
1830 | chain = chain->next; | |
1831 | } | |
1832 | } | |
1833 | else { | |
1834 | tblptr = section->relocation; | |
1835 | if (!tblptr) return 0; | |
1836 | ||
1837 | for (count = 0; count++ < section->reloc_count;) | |
1838 | { | |
1839 | *relptr++ = tblptr++; | |
1840 | } | |
1841 | } | |
1842 | *relptr = 0; | |
1843 | ||
1844 | return section->reloc_count; | |
1845 | } | |
1846 | ||
1847 | unsigned int | |
1848 | DEFUN(NAME(aout,get_reloc_upper_bound),(abfd, asect), | |
1849 | bfd *abfd AND | |
1850 | sec_ptr asect) | |
1851 | { | |
1852 | if (bfd_get_format (abfd) != bfd_object) { | |
1853 | bfd_error = invalid_operation; | |
1854 | return 0; | |
1855 | } | |
1856 | if (asect->flags & SEC_CONSTRUCTOR) { | |
1857 | return (sizeof (arelent *) * (asect->reloc_count+1)); | |
1858 | } | |
1859 | ||
1860 | ||
1861 | if (asect == obj_datasec (abfd)) | |
1862 | return (sizeof (arelent *) * | |
1863 | ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd)) | |
1864 | +1)); | |
1865 | ||
1866 | if (asect == obj_textsec (abfd)) | |
1867 | return (sizeof (arelent *) * | |
1868 | ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd)) | |
1869 | +1)); | |
1870 | ||
1871 | bfd_error = invalid_operation; | |
1872 | return 0; | |
1873 | } | |
1874 | ||
1875 | \f | |
1876 | unsigned int | |
1877 | DEFUN(NAME(aout,get_symtab_upper_bound),(abfd), | |
1878 | bfd *abfd) | |
1879 | { | |
1880 | if (!NAME(aout,slurp_symbol_table)(abfd)) return 0; | |
1881 | ||
1882 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
1883 | } | |
1884 | alent * | |
1885 | DEFUN(NAME(aout,get_lineno),(ignore_abfd, ignore_symbol), | |
1886 | bfd *ignore_abfd AND | |
1887 | asymbol *ignore_symbol) | |
1888 | { | |
1889 | return (alent *)NULL; | |
1890 | } | |
1891 | ||
1892 | ||
1893 | void | |
1894 | DEFUN(NAME(aout,print_symbol),(ignore_abfd, afile, symbol, how), | |
1895 | bfd *ignore_abfd AND | |
1896 | PTR afile AND | |
1897 | asymbol *symbol AND | |
9e2dad8e | 1898 | bfd_print_symbol_type how) |
7ed4093a SC |
1899 | { |
1900 | FILE *file = (FILE *)afile; | |
1901 | ||
1902 | switch (how) { | |
9e2dad8e | 1903 | case bfd_print_symbol_name: |
fb3be09b JG |
1904 | if (symbol->name) |
1905 | fprintf(file,"%s", symbol->name); | |
7ed4093a | 1906 | break; |
9e2dad8e | 1907 | case bfd_print_symbol_more: |
7ed4093a SC |
1908 | fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff), |
1909 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
1910 | (unsigned)(aout_symbol(symbol)->type)); | |
1911 | break; | |
9e2dad8e | 1912 | case bfd_print_symbol_all: |
7ed4093a | 1913 | { |
6db82ea7 SC |
1914 | CONST char *section_name = symbol->section->name; |
1915 | ||
7ed4093a SC |
1916 | |
1917 | bfd_print_symbol_vandf((PTR)file,symbol); | |
1918 | ||
fb3be09b | 1919 | fprintf(file," %-5s %04x %02x %02x", |
7ed4093a SC |
1920 | section_name, |
1921 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
1922 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
9e2dad8e | 1923 | (unsigned)(aout_symbol(symbol)->type & 0xff)); |
fb3be09b JG |
1924 | if (symbol->name) |
1925 | fprintf(file," %s", symbol->name); | |
7ed4093a SC |
1926 | } |
1927 | break; | |
98d43107 JG |
1928 | case bfd_print_symbol_nm: |
1929 | { | |
1930 | int section_code = bfd_decode_symclass (symbol); | |
1931 | ||
1932 | if (section_code == 'U') | |
1933 | fprintf(file, " "); | |
55c0061e FF |
1934 | else |
1935 | fprintf_vma(file, symbol->value+symbol->section->vma); | |
98d43107 JG |
1936 | if (section_code == '?') |
1937 | { | |
1938 | int type_code = aout_symbol(symbol)->type & 0xff; | |
7de245d3 | 1939 | char *stab_name = aout_stab_name(type_code); |
98d43107 JG |
1940 | char buf[10]; |
1941 | if (stab_name == NULL) | |
1942 | { | |
1943 | sprintf(buf, "(%d)", type_code); | |
1944 | stab_name = buf; | |
1945 | } | |
1946 | fprintf(file," - %02x %04x %5s", | |
1947 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
1948 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
1949 | stab_name); | |
1950 | } | |
1951 | else | |
1952 | fprintf(file," %c", section_code); | |
1953 | if (symbol->name) | |
1954 | fprintf(file," %s", symbol->name); | |
1955 | } | |
1956 | break; | |
7ed4093a SC |
1957 | } |
1958 | } | |
1959 | ||
1960 | /* | |
6724ff46 | 1961 | provided a BFD, a section and an offset into the section, calculate |
7ed4093a SC |
1962 | and return the name of the source file and the line nearest to the |
1963 | wanted location. | |
1964 | */ | |
1965 | ||
1966 | boolean | |
1967 | DEFUN(NAME(aout,find_nearest_line),(abfd, | |
1968 | section, | |
1969 | symbols, | |
1970 | offset, | |
1971 | filename_ptr, | |
1972 | functionname_ptr, | |
1973 | line_ptr), | |
1974 | bfd *abfd AND | |
1975 | asection *section AND | |
1976 | asymbol **symbols AND | |
1977 | bfd_vma offset AND | |
1978 | CONST char **filename_ptr AND | |
1979 | CONST char **functionname_ptr AND | |
1980 | unsigned int *line_ptr) | |
1981 | { | |
1982 | /* Run down the file looking for the filename, function and linenumber */ | |
1983 | asymbol **p; | |
1984 | static char buffer[100]; | |
98d43107 | 1985 | static char filename_buffer[200]; |
6db82ea7 SC |
1986 | CONST char *directory_name = NULL; |
1987 | CONST char *main_file_name = NULL; | |
1988 | CONST char *current_file_name = NULL; | |
1989 | CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */ | |
7ed4093a SC |
1990 | bfd_vma high_line_vma = ~0; |
1991 | bfd_vma low_func_vma = 0; | |
1992 | asymbol *func = 0; | |
1993 | *filename_ptr = abfd->filename; | |
1994 | *functionname_ptr = 0; | |
1995 | *line_ptr = 0; | |
1996 | if (symbols != (asymbol **)NULL) { | |
1997 | for (p = symbols; *p; p++) { | |
1998 | aout_symbol_type *q = (aout_symbol_type *)(*p); | |
98d43107 | 1999 | next: |
7ed4093a SC |
2000 | switch (q->type){ |
2001 | case N_SO: | |
3f7607af | 2002 | main_file_name = current_file_name = q->symbol.name; |
98d43107 JG |
2003 | /* Look ahead to next symbol to check if that too is an N_SO. */ |
2004 | p++; | |
2005 | if (*p == NULL) | |
2006 | break; | |
2007 | q = (aout_symbol_type *)(*p); | |
6db82ea7 | 2008 | if (q->type != (int)N_SO) |
98d43107 JG |
2009 | goto next; |
2010 | ||
2011 | /* Found a second N_SO First is directory; second is filename. */ | |
3f7607af PB |
2012 | directory_name = current_file_name; |
2013 | main_file_name = current_file_name = q->symbol.name; | |
2014 | if (obj_textsec(abfd) != section) | |
2015 | goto done; | |
2016 | break; | |
2017 | case N_SOL: | |
2018 | current_file_name = q->symbol.name; | |
7ed4093a | 2019 | break; |
3f7607af | 2020 | |
7ed4093a SC |
2021 | case N_SLINE: |
2022 | ||
2023 | case N_DSLINE: | |
2024 | case N_BSLINE: | |
2025 | /* We'll keep this if it resolves nearer than the one we have already */ | |
2026 | if (q->symbol.value >= offset && | |
2027 | q->symbol.value < high_line_vma) { | |
2028 | *line_ptr = q->desc; | |
2029 | high_line_vma = q->symbol.value; | |
3f7607af | 2030 | line_file_name = current_file_name; |
7ed4093a SC |
2031 | } |
2032 | break; | |
2033 | case N_FUN: | |
2034 | { | |
2035 | /* We'll keep this if it is nearer than the one we have already */ | |
2036 | if (q->symbol.value >= low_func_vma && | |
2037 | q->symbol.value <= offset) { | |
2038 | low_func_vma = q->symbol.value; | |
2039 | func = (asymbol *)q; | |
2040 | } | |
2041 | if (*line_ptr && func) { | |
2042 | CONST char *function = func->name; | |
2043 | char *p; | |
2044 | strncpy(buffer, function, sizeof(buffer)-1); | |
2045 | buffer[sizeof(buffer)-1] = 0; | |
2046 | /* Have to remove : stuff */ | |
2047 | p = strchr(buffer,':'); | |
7b02b4ed | 2048 | if (p != NULL) { *p = '\0'; } |
7ed4093a | 2049 | *functionname_ptr = buffer; |
3f7607af | 2050 | goto done; |
7ed4093a SC |
2051 | |
2052 | } | |
2053 | } | |
2054 | break; | |
2055 | } | |
2056 | } | |
2057 | } | |
3f7607af PB |
2058 | |
2059 | done: | |
2060 | if (*line_ptr) | |
2061 | main_file_name = line_file_name; | |
2062 | if (main_file_name) { | |
2063 | if (main_file_name[0] == '/' || directory_name == NULL) | |
2064 | *filename_ptr = main_file_name; | |
2065 | else { | |
2066 | sprintf(filename_buffer, "%.140s%.50s", | |
2067 | directory_name, main_file_name); | |
2068 | *filename_ptr = filename_buffer; | |
2069 | } | |
2070 | } | |
7ed4093a SC |
2071 | return true; |
2072 | ||
2073 | } | |
2074 | ||
2075 | int | |
cbdc7909 JG |
2076 | DEFUN(NAME(aout,sizeof_headers),(abfd, execable), |
2077 | bfd *abfd AND | |
9e2dad8e | 2078 | boolean execable) |
7ed4093a | 2079 | { |
6db82ea7 | 2080 | return adata(abfd).exec_bytes_size; |
7ed4093a | 2081 | } |