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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 | |
6f715d66 SC |
21 | /*doc* |
22 | @section a.out backends | |
23 | ||
24 | BFD supports a number of different flavours of a.out format, though | |
25 | the major differences are only the sizes of the structures on disk, | |
26 | and the shape of the relocation information. | |
27 | ||
28 | The support is split into a basic support file @code{aoutx.h} and | |
29 | other files which derive functions from the base. One derivation file | |
30 | is @code{aoutf1.h} (for a.out flavour 1), and adds to the basic a.out | |
31 | functions support for sun3, sun4, 386 and 29k a.out files, to create a | |
32 | target jump vector for a specific target. | |
33 | ||
34 | This information is further split out into more specific files for each | |
35 | machine, including @code{sunos.c} - for sun3 and sun4 and | |
36 | @code{demo64} for a demonstration of a 64 bit a.out format. | |
37 | ||
38 | The base file @code{aoutx.h} defines general mechanisms for reading | |
39 | and writing records to and from disk, and various other methods which | |
6724ff46 | 40 | BFD requires. It is included by @code{aout32.c} and @code{aout64.c} to |
6f715d66 SC |
41 | form the names aout_32_swap_exec_header_in, |
42 | aout_64_swap_exec_header_in, etc. | |
43 | ||
44 | As an example, this is what goes on to make the back end for a sun4, from aout32.c | |
45 | ||
46 | @example | |
47 | #define ARCH_SIZE 32 | |
48 | #include "aoutx.h" | |
49 | @end example | |
50 | ||
51 | Which exports names: | |
52 | @example | |
53 | ... | |
54 | aout_32_canonicalize_reloc | |
55 | aout_32_find_nearest_line | |
56 | aout_32_get_lineno | |
57 | aout_32_get_reloc_upper_bound | |
58 | ... | |
59 | @end example | |
60 | ||
61 | from sunos.c | |
62 | ||
63 | @example | |
64 | #define ARCH 32 | |
65 | #define TARGET_NAME "a.out-sunos-big" | |
66 | #define VECNAME sunos_big_vec | |
67 | #include "aoutf1.h" | |
68 | @end example | |
69 | requires all the names from aout32.c, and produces the jump vector | |
70 | ||
71 | @example | |
72 | sunos_big_vec | |
73 | @end example | |
74 | ||
75 | */ | |
76 | ||
c618de01 SC |
77 | #define KEEPIT flags |
78 | #define KEEPITTYPE int | |
67c060c3 SC |
79 | |
80 | #include "bfd.h" | |
7ed4093a SC |
81 | #include <sysdep.h> |
82 | #include <ansidecl.h> | |
83 | ||
7ed4093a | 84 | struct external_exec; |
6f715d66 | 85 | #include "libaout.h" |
7ed4093a SC |
86 | #include "libbfd.h" |
87 | #include "aout64.h" | |
88 | #include "stab.gnu.h" | |
89 | #include "ar.h" | |
90 | ||
91 | void (*bfd_error_trap)(); | |
92 | ||
6f715d66 SC |
93 | /*doc* |
94 | @subsection relocations | |
95 | The file @code{aoutx.h} caters for both the @emph{standard} and | |
96 | @emph{extended} forms of a.out relocation records. | |
7ed4093a | 97 | |
6f715d66 SC |
98 | The standard records are characterised by containing only an address, |
99 | a symbol index and a type field. The extended records (used on 29ks | |
100 | and sparcs) also have a full integer for an addend. | |
101 | */ | |
7ed4093a | 102 | #define CTOR_TABLE_RELOC_IDX 2 |
67c060c3 SC |
103 | |
104 | /* start-sanitize-v9 */ | |
105 | /* Provided the symbol, returns the value reffed */ | |
106 | static bfd_vma | |
107 | DEFUN(get_symbol_value,(symbol, input_section), | |
108 | asymbol *symbol AND | |
109 | asection *input_section) | |
110 | { | |
111 | bfd_vma relocation = 0; | |
112 | ||
113 | if (symbol != (asymbol *)NULL) { | |
114 | if (symbol->flags & BSF_FORT_COMM) { | |
115 | relocation = 0; | |
116 | } else { | |
117 | relocation = symbol->value; | |
118 | } | |
119 | if (symbol->section != (asection *)NULL) { | |
120 | relocation += symbol->section->output_section->vma + | |
121 | symbol->section->output_offset; | |
122 | } | |
123 | } | |
124 | else { | |
125 | /* No symbol, so use the input section value */ | |
126 | relocation = input_section->output_section->vma + input_section->output_offset; | |
127 | } | |
128 | return relocation; | |
129 | } | |
130 | ||
131 | static bfd_reloc_status_enum_type | |
132 | DEFUN(reloc64,(abfd, reloc_entry, symbol_in, data, input_section), | |
133 | bfd *abfd AND | |
134 | arelent *reloc_entry AND | |
135 | asymbol *symbol_in AND | |
136 | unsigned char *data AND | |
137 | asection *input_section) | |
138 | { | |
139 | bfd_vma sym_value = get_symbol_value(symbol_in, input_section); | |
140 | bfd_vma value = bfd_get_64(abfd, (bfd_byte *)data + reloc_entry->address); | |
141 | value += sym_value + reloc_entry->addend; | |
142 | bfd_put_64(abfd, value, (bfd_byte *)data+reloc_entry->address); | |
143 | return bfd_reloc_ok; | |
144 | } | |
145 | ||
146 | static bfd_reloc_status_enum_type | |
147 | DEFUN(disp64,(abfd, reloc_entry, symbol_in, data, input_section), | |
148 | bfd *abfd AND | |
149 | arelent *reloc_entry AND | |
150 | asymbol *symbol_in AND | |
151 | unsigned char *data AND | |
152 | asection *input_section) | |
153 | { | |
154 | bfd_vma sym_value = get_symbol_value(symbol_in, input_section); | |
155 | ||
156 | /* bfd_get_64(abfd, (bfd_byte *)data + reloc_entry->address);*/ | |
157 | bfd_vma value = 0; | |
158 | value += sym_value + reloc_entry->addend; | |
159 | ||
160 | /* Subtract from the calculated value the pc */ | |
161 | value -= reloc_entry->address + input_section->output_section->vma; | |
162 | bfd_put_64(abfd, value, (bfd_byte *)data+reloc_entry->address); | |
163 | return bfd_reloc_ok; | |
164 | } | |
165 | ||
166 | static bfd_reloc_status_enum_type | |
167 | DEFUN(hhi22,(abfd, reloc_entry, symbol_in, data, input_section), | |
168 | bfd *abfd AND | |
169 | arelent *reloc_entry AND | |
170 | asymbol *symbol_in AND | |
171 | unsigned char *data AND | |
172 | asection *input_section) | |
173 | { | |
174 | bfd_vma sym_value = get_symbol_value(symbol_in, input_section); | |
175 | ||
176 | bfd_vma value = bfd_get_32(abfd, (bfd_byte *)data + reloc_entry->address); | |
177 | ||
178 | value = (value & ~0x3fffff) | ( ((sym_value + reloc_entry->addend) >> 32+10) & 0x3fffff); | |
179 | ||
180 | bfd_put_32(abfd, value, (bfd_byte *)data+reloc_entry->address); | |
181 | return bfd_reloc_ok; | |
182 | } | |
183 | ||
184 | static bfd_reloc_status_enum_type | |
185 | DEFUN(hlo10,(abfd, reloc_entry, symbol_in, data, input_section), | |
186 | bfd *abfd AND | |
187 | arelent *reloc_entry AND | |
188 | asymbol *symbol_in AND | |
189 | unsigned char *data AND | |
190 | asection *input_section) | |
191 | { | |
192 | bfd_vma sym_value = get_symbol_value(symbol_in, input_section); | |
193 | ||
194 | bfd_vma value = bfd_get_32(abfd, (bfd_byte *)data + reloc_entry->address); | |
195 | ||
196 | value = (value & ~0x3ff) | (((sym_value + reloc_entry->addend) >> 32) & 0x3ff); | |
197 | ||
198 | bfd_put_32(abfd, value, (bfd_byte *)data+reloc_entry->address); | |
199 | return bfd_reloc_ok; | |
200 | } | |
201 | ||
202 | static r64() | |
203 | { | |
204 | abort(); | |
205 | } | |
206 | ||
207 | /* end-sanitize-v9 */ | |
208 | ||
7ed4093a SC |
209 | static reloc_howto_type howto_table_ext[] = |
210 | { | |
211 | HOWTO(RELOC_8, 0, 0, 8, false, 0, true, true,0,"8", false, 0,0x000000ff, false), | |
212 | HOWTO(RELOC_16, 0, 1, 16, false, 0, true, true,0,"16", false, 0,0x0000ffff, false), | |
213 | HOWTO(RELOC_32, 0, 2, 32, false, 0, true, true,0,"32", false, 0,0xffffffff, false), | |
214 | HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, false, true,0,"DISP8", false, 0,0x000000ff, false), | |
215 | HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, false, true,0,"DISP16", false, 0,0x0000ffff, false), | |
216 | HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, false, true,0,"DISP32", false, 0,0xffffffff, false), | |
217 | HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, false, true,0,"WDISP30", false, 0,0x3fffffff, false), | |
218 | HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, false, true,0,"WDISP22", false, 0,0x003fffff, false), | |
219 | HOWTO(RELOC_HI22, 10, 2, 22, false, 0, false, true,0,"HI22", false, 0,0x003fffff, false), | |
220 | HOWTO(RELOC_22, 0, 2, 22, false, 0, false, true,0,"22", false, 0,0x003fffff, false), | |
221 | HOWTO(RELOC_13, 0, 2, 13, false, 0, false, true,0,"13", false, 0,0x00001fff, false), | |
222 | HOWTO(RELOC_LO10, 0, 2, 10, false, 0, false, true,0,"LO10", false, 0,0x000003ff, false), | |
223 | HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, false, true,0,"SFA_BASE", false, 0,0xffffffff, false), | |
224 | HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, false, true,0,"SFA_OFF13",false, 0,0xffffffff, false), | |
225 | HOWTO(RELOC_BASE10, 0, 2, 16, false, 0, false, true,0,"BASE10", false, 0,0x0000ffff, false), | |
226 | HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, false, true,0,"BASE13", false, 0,0x00001fff, false), | |
227 | HOWTO(RELOC_BASE22, 0, 2, 0, false, 0, false, true,0,"BASE22", false, 0,0x00000000, false), | |
228 | HOWTO(RELOC_PC10, 0, 2, 10, false, 0, false, true,0,"PC10", false, 0,0x000003ff, false), | |
229 | HOWTO(RELOC_PC22, 0, 2, 22, false, 0, false, true,0,"PC22", false, 0,0x003fffff, false), | |
230 | HOWTO(RELOC_JMP_TBL,0, 2, 32, false, 0, false, true,0,"JMP_TBL", false, 0,0xffffffff, false), | |
231 | HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, false, true,0,"SEGOFF16", false, 0,0x00000000, false), | |
232 | HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, false, true,0,"GLOB_DAT", false, 0,0x00000000, false), | |
233 | HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, false, true,0,"JMP_SLOT", false, 0,0x00000000, false), | |
67c060c3 SC |
234 | HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, false, true,0,"RELATIVE", false, 0,0x00000000, false), |
235 | ||
236 | /* start-sanitize-v9 */ | |
c618de01 | 237 | |
67c060c3 SC |
238 | HOWTO(RELOC_11, 0, 2, 21, true, 0, false, true,r64,"11", false, 0,/*0x00000000001fffff*/0, false), |
239 | HOWTO(RELOC_WDISP2_14, 0, 2, 21, true, 0, false, true,r64,"DISP2_14",false, 0,/*0x00000000001fffff*/0, false), | |
240 | HOWTO(RELOC_WDISP19, 0, 3, 64, true, 0, false, true,r64,"DISP19", false, 0,/*0xffffffffffffffff*/0, false), | |
241 | HOWTO(RELOC_HHI22, 42, 3, 22, false, 0, false, true,hhi22,"HHI22",false, 0,/*0x003fffff00000000*/0, false), | |
242 | HOWTO(RELOC_HLO10, 32, 3, 10, false, 0, false, true,hlo10,"HLO10", false, 0,/*0x000003ff00000000*/0, false), | |
c618de01 | 243 | |
7ed4093a SC |
244 | HOWTO(RELOC_JUMPTARG,2, 13, 16, true, 0, false, true,0,"JUMPTARG", false, 0,0x0000ffff, false), |
245 | HOWTO(RELOC_CONST, 0, 13, 16, false, 0, false, true,0,"CONST", false, 0,0x0000ffff, false), | |
246 | HOWTO(RELOC_CONSTH, 16, 13, 16, false, 0, false, true,0,"CONSTH", false, 0,0x0000ffff, false), | |
67c060c3 | 247 | |
c618de01 | 248 | |
67c060c3 SC |
249 | HOWTO(RELOC_64, 0, 3, 64, false, 0, true, true,reloc64,"64", false, 0,/*0xffffffffffffffff*/0, false), |
250 | HOWTO(RELOC_DISP64, 0, 3, 64, true, 0, false, true,disp64,"DISP64", false, 0,/*0xffffffffffffffff*/0, false), | |
251 | HOWTO(RELOC_WDISP21,2, 2, 21, true, 0, false, true,r64,"WDISP21",false, 0,/*0x00000000001fffff*/0, false), | |
252 | HOWTO(RELOC_DISP21, 0, 2, 21, true, 0, false, true,r64,"DISP21", false, 0,/*0x00000000001fffff*/0, false), | |
253 | HOWTO(RELOC_DISP14, 0, 2, 14, true, 0, false, true,r64,"DISP21", false, 0,/*0x0000000000003fff*/0, false), | |
c618de01 | 254 | |
67c060c3 | 255 | /* end-sanitize-v9 */ |
7ed4093a SC |
256 | }; |
257 | ||
258 | /* Convert standard reloc records to "arelent" format (incl byte swap). */ | |
259 | ||
260 | static reloc_howto_type howto_table_std[] = { | |
261 | /* type rs size bsz pcrel bitpos abs ovrf sf name part_inpl readmask setmask pcdone */ | |
262 | HOWTO( 0, 0, 0, 8, false, 0, true, true,0,"8", true, 0x000000ff,0x000000ff, false), | |
263 | HOWTO( 1, 0, 1, 16, false, 0, true, true,0,"16", true, 0x0000ffff,0x0000ffff, false), | |
264 | HOWTO( 2, 0, 2, 32, false, 0, true, true,0,"32", true, 0xffffffff,0xffffffff, false), | |
265 | HOWTO( 3, 0, 3, 64, false, 0, true, true,0,"64", true, 0xdeaddead,0xdeaddead, false), | |
266 | HOWTO( 4, 0, 0, 8, true, 0, false, true,0,"DISP8", true, 0x000000ff,0x000000ff, false), | |
267 | HOWTO( 5, 0, 1, 16, true, 0, false, true,0,"DISP16", true, 0x0000ffff,0x0000ffff, false), | |
268 | HOWTO( 6, 0, 2, 32, true, 0, false, true,0,"DISP32", true, 0xffffffff,0xffffffff, false), | |
269 | HOWTO( 7, 0, 3, 64, true, 0, false, true,0,"DISP64", true, 0xfeedface,0xfeedface, false), | |
270 | }; | |
271 | ||
272 | ||
273 | bfd_error_vector_type bfd_error_vector; | |
6f715d66 SC |
274 | |
275 | /*doc* | |
276 | @subsection Internal Entry Points | |
277 | @code{aoutx.h} exports several routines for accessing the contents of | |
278 | an a.out file, which are gathered and exported in turn by various | |
279 | format specific files (eg sunos.c). | |
280 | */ | |
281 | ||
282 | /*doc* | |
283 | *i aout_<size>_swap_exec_header_in | |
284 | Swaps the information in an executable header taken from a raw byte stream memory image, | |
285 | into the internal exec_header structure. | |
286 | *; PROTO(void, aout_<size>_swap_exec_header_in, | |
287 | (bfd *abfd, | |
288 | struct external_exec *raw_bytes, | |
289 | struct internal_exec *execp)); | |
290 | */ | |
291 | ||
7ed4093a SC |
292 | void |
293 | DEFUN(NAME(aout,swap_exec_header_in),(abfd, raw_bytes, execp), | |
294 | bfd *abfd AND | |
295 | struct external_exec *raw_bytes AND | |
296 | struct internal_exec *execp) | |
297 | { | |
298 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
299 | ||
300 | /* Now fill in fields in the execp, from the bytes in the raw data. */ | |
301 | execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); | |
302 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
303 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
304 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
305 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
306 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
307 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); | |
308 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
309 | } | |
310 | ||
6f715d66 SC |
311 | /*doc* |
312 | *i aout_<size>_swap_exec_header_out | |
313 | Swaps the information in an internal exec header structure into the | |
314 | supplied buffer ready for writing to disk. | |
315 | *; PROTO(void, aout_<size>_swap_exec_header_out, | |
316 | (bfd *abfd, | |
317 | struct internal_exec *execp, | |
318 | struct external_exec *raw_bytes)); | |
319 | */ | |
7ed4093a SC |
320 | void |
321 | DEFUN(NAME(aout,swap_exec_header_out),(abfd, execp, raw_bytes), | |
322 | bfd *abfd AND | |
323 | struct internal_exec *execp AND | |
324 | struct external_exec *raw_bytes) | |
325 | { | |
326 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
327 | ||
328 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ | |
329 | bfd_h_put_32 (abfd, execp->a_info , bytes->e_info); | |
330 | PUT_WORD (abfd, execp->a_text , bytes->e_text); | |
331 | PUT_WORD (abfd, execp->a_data , bytes->e_data); | |
332 | PUT_WORD (abfd, execp->a_bss , bytes->e_bss); | |
333 | PUT_WORD (abfd, execp->a_syms , bytes->e_syms); | |
334 | PUT_WORD (abfd, execp->a_entry , bytes->e_entry); | |
335 | PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); | |
336 | PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); | |
337 | } | |
338 | ||
339 | struct container { | |
340 | struct aoutdata a; | |
341 | struct internal_exec e; | |
342 | }; | |
343 | ||
6f715d66 SC |
344 | |
345 | /*doc* | |
346 | *i aout_<size>_some_aout_object_p | |
347 | ||
348 | Some A.OUT variant thinks that the file whose format we're checking | |
349 | is an a.out file. Do some more checking, and set up for access if | |
350 | it really is. Call back to the calling environments "finish up" | |
351 | function just before returning, to handle any last-minute setup. | |
352 | ||
353 | *; PROTO(bfd_target *, aout_<size>_some_aout_object_p, | |
354 | (bfd *abfd, | |
355 | bfd_target *(*callback_to_real_object_p)())); | |
356 | */ | |
7ed4093a SC |
357 | |
358 | bfd_target * | |
359 | DEFUN(NAME(aout,some_aout_object_p),(abfd, callback_to_real_object_p), | |
360 | bfd *abfd AND | |
361 | bfd_target *(*callback_to_real_object_p) ()) | |
362 | { | |
363 | struct external_exec exec_bytes; | |
364 | struct internal_exec *execp; | |
365 | struct container *rawptr; | |
366 | ||
367 | if (bfd_seek (abfd, 0L, false) < 0) { | |
368 | bfd_error = system_call_error; | |
369 | return 0; | |
370 | } | |
371 | ||
372 | if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd) | |
373 | != EXEC_BYTES_SIZE) { | |
374 | bfd_error = wrong_format; | |
375 | return 0; | |
376 | } | |
377 | ||
378 | /* Use an intermediate variable for clarity */ | |
379 | rawptr = (struct container *) bfd_zalloc (abfd, sizeof (struct container)); | |
380 | ||
381 | if (rawptr == NULL) { | |
382 | bfd_error = no_memory; | |
383 | return 0; | |
384 | } | |
385 | ||
386 | set_tdata (abfd, rawptr); | |
387 | exec_hdr (abfd) = execp = &(rawptr->e); | |
388 | NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, execp); | |
389 | ||
390 | /* Set the file flags */ | |
391 | abfd->flags = NO_FLAGS; | |
392 | if (execp->a_drsize || execp->a_trsize) | |
393 | abfd->flags |= HAS_RELOC; | |
394 | if (execp->a_entry) | |
395 | abfd->flags |= EXEC_P; | |
396 | if (execp->a_syms) | |
397 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
398 | ||
399 | if (N_MAGIC (*execp) == ZMAGIC) abfd->flags |= D_PAGED; | |
400 | if (N_MAGIC (*execp) == NMAGIC) abfd->flags |= WP_TEXT; | |
401 | ||
402 | bfd_get_start_address (abfd) = execp->a_entry; | |
403 | ||
404 | obj_aout_symbols (abfd) = (aout_symbol_type *)NULL; | |
405 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); | |
406 | ||
407 | /* Set the default architecture and machine type. These can be | |
408 | overridden in the callback routine. */ | |
409 | abfd->obj_arch = bfd_arch_unknown; | |
410 | abfd->obj_machine = 0; | |
411 | ||
412 | /* The default relocation entry size is that of traditional V7 Unix. */ | |
413 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
414 | ||
415 | /* create the sections. This is raunchy, but bfd_close wants to reclaim | |
416 | them */ | |
417 | obj_textsec (abfd) = (asection *)NULL; | |
418 | obj_datasec (abfd) = (asection *)NULL; | |
419 | obj_bsssec (abfd) = (asection *)NULL; | |
420 | (void)bfd_make_section(abfd, ".text"); | |
421 | (void)bfd_make_section(abfd, ".data"); | |
422 | (void)bfd_make_section(abfd, ".bss"); | |
423 | ||
424 | abfd->sections = obj_textsec (abfd); | |
425 | obj_textsec (abfd)->next = obj_datasec (abfd); | |
426 | obj_datasec (abfd)->next = obj_bsssec (abfd); | |
427 | ||
428 | obj_datasec (abfd)->size = execp->a_data; | |
429 | obj_bsssec (abfd)->size = execp->a_bss; | |
430 | obj_textsec (abfd)->size = execp->a_text; | |
431 | ||
432 | if (abfd->flags & D_PAGED) { | |
433 | obj_textsec (abfd)->size -= EXEC_BYTES_SIZE; | |
434 | } | |
435 | ||
436 | ||
437 | obj_textsec (abfd)->flags = (execp->a_trsize != 0 ? | |
438 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_HAS_CONTENTS) : | |
439 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)); | |
440 | obj_datasec (abfd)->flags = (execp->a_drsize != 0 ? | |
441 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_HAS_CONTENTS) : | |
442 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)); | |
443 | obj_bsssec (abfd)->flags = SEC_ALLOC; | |
444 | ||
445 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
446 | /* Call back to the format-dependent code to fill in the rest of the | |
447 | fields and do any further cleanup. Things that should be filled | |
448 | in by the callback: */ | |
449 | ||
450 | struct exec *execp = exec_hdr (abfd); | |
451 | ||
452 | /* The virtual memory addresses of the sections */ | |
453 | obj_datasec (abfd)->vma = N_DATADDR(*execp); | |
454 | obj_bsssec (abfd)->vma = N_BSSADDR(*execp); | |
455 | obj_textsec (abfd)->vma = N_TXTADDR(*execp); | |
456 | ||
457 | /* The file offsets of the sections */ | |
458 | obj_textsec (abfd)->filepos = N_TXTOFF(*execp); | |
459 | obj_datasec (abfd)->filepos = N_DATOFF(*execp); | |
460 | ||
461 | /* The file offsets of the relocation info */ | |
462 | obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); | |
463 | obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); | |
464 | ||
465 | /* The file offsets of the string table and symbol table. */ | |
466 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
467 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
468 | ||
469 | /* This common code can't fill in those things because they depend | |
470 | on either the start address of the text segment, the rounding | |
471 | up of virtual addersses between segments, or the starting file | |
472 | position of the text segment -- all of which varies among different | |
473 | versions of a.out. */ | |
474 | ||
475 | /* Determine the architecture and machine type of the object file. */ | |
476 | switch (N_MACHTYPE (*exec_hdr (abfd))) { | |
477 | default: | |
478 | abfd->obj_arch = bfd_arch_obscure; | |
479 | break; | |
480 | } | |
481 | ||
482 | /* Determine the size of a relocation entry */ | |
483 | switch (abfd->obj_arch) { | |
484 | case bfd_arch_sparc: | |
485 | case bfd_arch_a29k: | |
486 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; | |
487 | default: | |
488 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
489 | } | |
490 | ||
491 | return abfd->xvec; | |
492 | ||
493 | /* The architecture is encoded in various ways in various a.out variants, | |
494 | or is not encoded at all in some of them. The relocation size depends | |
495 | on the architecture and the a.out variant. Finally, the return value | |
496 | is the bfd_target vector in use. If an error occurs, return zero and | |
497 | set bfd_error to the appropriate error code. | |
498 | ||
499 | Formats such as b.out, which have additional fields in the a.out | |
500 | header, should cope with them in this callback as well. */ | |
501 | #endif /* DOCUMENTATION */ | |
502 | ||
503 | ||
504 | return (*callback_to_real_object_p)(abfd); | |
505 | } | |
506 | ||
6f715d66 SC |
507 | /*doc* |
508 | *i aout_<size>_mkobject | |
509 | ||
6724ff46 | 510 | This routine initializes a BFD for use with a.out files. |
6f715d66 SC |
511 | |
512 | *; PROTO(boolean, aout_<size>_mkobject, (bfd *)); | |
513 | */ | |
7ed4093a SC |
514 | |
515 | boolean | |
516 | DEFUN(NAME(aout,mkobject),(abfd), | |
517 | bfd *abfd) | |
518 | { | |
519 | struct container *rawptr; | |
520 | ||
521 | bfd_error = system_call_error; | |
522 | ||
523 | /* Use an intermediate variable for clarity */ | |
524 | rawptr = (struct container *)bfd_zalloc (abfd, sizeof (struct container)); | |
525 | ||
526 | if (rawptr == NULL) { | |
527 | bfd_error = no_memory; | |
528 | return false; | |
529 | } | |
530 | ||
531 | set_tdata (abfd, rawptr); | |
532 | exec_hdr (abfd) = &(rawptr->e); | |
533 | ||
534 | /* For simplicity's sake we just make all the sections right here. */ | |
535 | ||
536 | obj_textsec (abfd) = (asection *)NULL; | |
537 | obj_datasec (abfd) = (asection *)NULL; | |
538 | obj_bsssec (abfd) = (asection *)NULL; | |
539 | bfd_make_section (abfd, ".text"); | |
540 | bfd_make_section (abfd, ".data"); | |
541 | bfd_make_section (abfd, ".bss"); | |
542 | ||
543 | return true; | |
544 | } | |
545 | ||
6f715d66 SC |
546 | |
547 | /*doc* | |
548 | *i aout_<size>_machine_type | |
549 | ||
550 | Keep track of machine architecture and machine type for a.out's. | |
7ed4093a SC |
551 | Return the machine_type for a particular arch&machine, or M_UNKNOWN |
552 | if that exact arch&machine can't be represented in a.out format. | |
553 | ||
554 | If the architecture is understood, machine type 0 (default) should | |
6f715d66 SC |
555 | always be understood. |
556 | ||
557 | *; PROTO(enum machine_type, aout_<size>_machine_type, | |
558 | (enum bfd_architecture arch, | |
559 | unsigned long machine)); | |
560 | */ | |
7ed4093a SC |
561 | |
562 | enum machine_type | |
563 | DEFUN(NAME(aout,machine_type),(arch, machine), | |
564 | enum bfd_architecture arch AND | |
565 | unsigned long machine) | |
566 | { | |
567 | enum machine_type arch_flags; | |
568 | ||
569 | arch_flags = M_UNKNOWN; | |
570 | ||
571 | switch (arch) { | |
572 | case bfd_arch_sparc: | |
573 | if (machine == 0) arch_flags = M_SPARC; | |
574 | break; | |
575 | ||
576 | case bfd_arch_m68k: | |
577 | switch (machine) { | |
578 | case 0: arch_flags = M_68010; break; | |
579 | case 68000: arch_flags = M_UNKNOWN; break; | |
580 | case 68010: arch_flags = M_68010; break; | |
581 | case 68020: arch_flags = M_68020; break; | |
582 | default: arch_flags = M_UNKNOWN; break; | |
583 | } | |
584 | break; | |
585 | ||
586 | case bfd_arch_i386: | |
587 | if (machine == 0) arch_flags = M_386; | |
588 | break; | |
589 | ||
590 | case bfd_arch_a29k: | |
591 | if (machine == 0) arch_flags = M_29K; | |
592 | break; | |
593 | ||
594 | default: | |
595 | arch_flags = M_UNKNOWN; | |
596 | break; | |
597 | } | |
598 | return arch_flags; | |
599 | } | |
600 | ||
6f715d66 SC |
601 | /*doc* |
602 | *i aout_<size>_set_arch_mach | |
603 | ||
6724ff46 | 604 | Sets the architecture and the machine of the BFD to those values |
6f715d66 SC |
605 | supplied. Verifies that the format can support the architecture |
606 | required. | |
607 | ||
608 | *; PROTO(boolean, aout_<size>_set_arch_mach, | |
609 | (bfd *, | |
610 | enum bfd_architecture, | |
611 | unsigned long machine)); | |
612 | */ | |
613 | ||
7ed4093a SC |
614 | boolean |
615 | DEFUN(NAME(aout,set_arch_mach),(abfd, arch, machine), | |
616 | bfd *abfd AND | |
617 | enum bfd_architecture arch AND | |
618 | unsigned long machine) | |
619 | { | |
620 | abfd->obj_arch = arch; | |
621 | abfd->obj_machine = machine; | |
622 | if (arch != bfd_arch_unknown && | |
623 | NAME(aout,machine_type) (arch, machine) == M_UNKNOWN) | |
624 | return false; /* We can't represent this type */ | |
625 | return true; /* We're easy ... */ | |
626 | } | |
7ed4093a | 627 | |
6f715d66 SC |
628 | /*doc* |
629 | *i aout_<size>new_section_hook | |
630 | ||
6724ff46 | 631 | Called by the BFD in response to a @code{bfd_make_section} request. |
6f715d66 SC |
632 | *; PROTO(boolean, aout_<size>_new_section_hook, |
633 | (bfd *abfd, | |
634 | asection *newsect)); | |
635 | */ | |
7ed4093a SC |
636 | boolean |
637 | DEFUN(NAME(aout,new_section_hook),(abfd, newsect), | |
638 | bfd *abfd AND | |
639 | asection *newsect) | |
640 | { | |
641 | /* align to double at least */ | |
642 | newsect->alignment_power = 3; | |
643 | ||
644 | if (bfd_get_format (abfd) == bfd_object) { | |
645 | if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) { | |
646 | obj_textsec(abfd)= newsect; | |
647 | return true; | |
648 | } | |
649 | ||
650 | if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) { | |
651 | obj_datasec(abfd) = newsect; | |
652 | return true; | |
653 | } | |
654 | ||
655 | if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) { | |
656 | obj_bsssec(abfd) = newsect; | |
657 | return true; | |
658 | } | |
659 | } | |
660 | ||
661 | /* We allow more than three sections internally */ | |
662 | return true; | |
663 | } | |
664 | ||
665 | boolean | |
666 | DEFUN(NAME(aout,set_section_contents),(abfd, section, location, offset, count), | |
667 | bfd *abfd AND | |
668 | sec_ptr section AND | |
669 | PTR location AND | |
670 | file_ptr offset AND | |
671 | bfd_size_type count) | |
672 | { | |
673 | if (abfd->output_has_begun == false) | |
674 | { /* set by bfd.c handler */ | |
675 | if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL)) | |
676 | { | |
677 | bfd_error = invalid_operation; | |
678 | return false; | |
679 | } | |
680 | /* if (abfd->flags & D_PAGED) { | |
681 | obj_textsec(abfd)->filepos = 0; | |
682 | } | |
683 | else*/ { | |
684 | obj_textsec(abfd)->filepos = EXEC_BYTES_SIZE; | |
685 | } | |
686 | obj_textsec(abfd)->size = align_power(obj_textsec(abfd)->size, | |
687 | obj_textsec(abfd)->alignment_power); | |
688 | obj_datasec(abfd)->filepos = obj_textsec (abfd)->size + EXEC_BYTES_SIZE; | |
689 | obj_datasec(abfd)->size = align_power(obj_datasec(abfd)->size, | |
690 | obj_datasec(abfd)->alignment_power); | |
691 | ||
692 | ||
693 | } | |
694 | /* regardless, once we know what we're doing, we might as well get going */ | |
695 | if (section != obj_bsssec(abfd)) | |
696 | { | |
697 | bfd_seek (abfd, section->filepos + offset, SEEK_SET); | |
698 | ||
699 | if (count) { | |
700 | return (bfd_write ((PTR)location, 1, count, abfd) == count) ? | |
701 | true : false; | |
702 | } | |
703 | return false; | |
704 | } | |
705 | return true; | |
706 | } | |
707 | \f | |
708 | /* Classify stabs symbols */ | |
709 | ||
710 | #define sym_in_text_section(sym) \ | |
711 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_TEXT) | |
712 | ||
713 | #define sym_in_data_section(sym) \ | |
714 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_DATA) | |
715 | ||
716 | #define sym_in_bss_section(sym) \ | |
717 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_BSS) | |
718 | ||
719 | /* Symbol is undefined if type is N_UNDF|N_EXT and if it has | |
720 | zero in the "value" field. Nonzeroes there are fortrancommon | |
721 | symbols. */ | |
722 | #define sym_is_undefined(sym) \ | |
723 | ((sym)->type == (N_UNDF | N_EXT) && (sym)->symbol.value == 0) | |
724 | ||
725 | /* Symbol is a global definition if N_EXT is on and if it has | |
726 | a nonzero type field. */ | |
727 | #define sym_is_global_defn(sym) \ | |
728 | (((sym)->type & N_EXT) && (sym)->type & N_TYPE) | |
729 | ||
730 | /* Symbol is debugger info if any bits outside N_TYPE or N_EXT | |
731 | are on. */ | |
732 | #define sym_is_debugger_info(sym) \ | |
733 | ((sym)->type & ~(N_EXT | N_TYPE)) | |
734 | ||
735 | #define sym_is_fortrancommon(sym) \ | |
736 | (((sym)->type == (N_EXT)) && (sym)->symbol.value != 0) | |
737 | ||
738 | /* Symbol is absolute if it has N_ABS set */ | |
739 | #define sym_is_absolute(sym) \ | |
740 | (((sym)->type & N_TYPE)== N_ABS) | |
741 | ||
742 | ||
743 | #define sym_is_indirect(sym) \ | |
744 | (((sym)->type & N_ABS)== N_ABS) | |
745 | ||
746 | /* Only in their own functions for ease of debugging; when sym flags have | |
747 | stabilised these should be inlined into their (single) caller */ | |
748 | ||
749 | static void | |
750 | DEFUN(translate_from_native_sym_flags,(sym_pointer, cache_ptr, abfd), | |
751 | struct external_nlist *sym_pointer AND | |
752 | aout_symbol_type *cache_ptr AND | |
753 | bfd *abfd) | |
c618de01 SC |
754 | { |
755 | switch (cache_ptr->type & N_TYPE) { | |
756 | case N_SETA: | |
757 | case N_SETT: | |
758 | case N_SETD: | |
759 | case N_SETB: | |
760 | { | |
761 | char *copy = bfd_alloc(abfd, strlen(cache_ptr->symbol.name)+1); | |
762 | asection *section ; | |
763 | arelent_chain *reloc = (arelent_chain *)bfd_alloc(abfd, sizeof(arelent_chain)); | |
764 | strcpy(copy, cache_ptr->symbol.name); | |
765 | section = bfd_make_section(abfd,copy); | |
766 | switch ( (cache_ptr->type & N_TYPE) ) { | |
767 | case N_SETA: | |
768 | section->flags = SEC_CONSTRUCTOR; | |
769 | reloc->relent.section = (asection *)NULL; | |
770 | cache_ptr->symbol.section = (asection *)NULL; | |
771 | break; | |
772 | case N_SETT: | |
773 | section->flags = SEC_CONSTRUCTOR_TEXT; | |
774 | reloc->relent.section = (asection *)obj_textsec(abfd); | |
775 | cache_ptr->symbol.value -= reloc->relent.section->vma; | |
776 | break; | |
777 | case N_SETD: | |
778 | section->flags = SEC_CONSTRUCTOR_DATA; | |
779 | reloc->relent.section = (asection *)obj_datasec(abfd); | |
780 | cache_ptr->symbol.value -= reloc->relent.section->vma; | |
781 | break; | |
782 | case N_SETB: | |
783 | section->flags = SEC_CONSTRUCTOR_BSS; | |
784 | reloc->relent.section = (asection *)obj_bsssec(abfd); | |
785 | cache_ptr->symbol.value -= reloc->relent.section->vma; | |
786 | break; | |
787 | } | |
788 | cache_ptr->symbol.section = reloc->relent.section; | |
789 | reloc->relent.addend = cache_ptr->symbol.value ; | |
7ed4093a | 790 | |
c618de01 SC |
791 | /* We modify the symbol to belong to a section depending upon the |
792 | name of the symbol - probably __CTOR__ or __DTOR__ but we don't | |
793 | really care, and add to the size of the section to contain a | |
794 | pointer to the symbol. Build a reloc entry to relocate to this | |
795 | symbol attached to this section. */ | |
796 | ||
797 | ||
798 | section->reloc_count++; | |
799 | section->alignment_power = 2; | |
800 | reloc->relent.sym_ptr_ptr = (asymbol **)NULL; | |
801 | reloc->next = section->constructor_chain; | |
802 | section->constructor_chain = reloc; | |
803 | reloc->relent.address = section->size; | |
804 | section->size += sizeof(int *); | |
805 | ||
806 | reloc->relent.howto = howto_table_ext +CTOR_TABLE_RELOC_IDX; | |
807 | cache_ptr->symbol.flags |= BSF_DEBUGGING | BSF_CONSTRUCTOR; | |
808 | } | |
809 | break; | |
7ed4093a | 810 | default: |
88dfcd68 SC |
811 | if (cache_ptr->type == N_WARNING) |
812 | { | |
813 | /* This symbol is the text of a warning message, the next symbol | |
814 | is the symbol to associate the warning with */ | |
815 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
816 | cache_ptr->symbol.value = (bfd_vma)((cache_ptr+1)); | |
817 | /* We furgle with the next symbol in place. We don't want it to be undefined, we'll trample the type */ | |
818 | (sym_pointer+1)->e_type[0] = 0xff; | |
819 | break; | |
820 | } | |
c618de01 | 821 | if ((cache_ptr->type | N_EXT) == (N_INDR | N_EXT)) { |
88dfcd68 SC |
822 | /* Two symbols in a row for an INDR message. The first symbol |
823 | contains the name we will match, the second symbol contains the | |
824 | name the first name is translated into. It is supplied to us | |
825 | undefined. This is good, since we want to pull in any files which | |
826 | define it */ | |
827 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT; | |
828 | cache_ptr->symbol.value = (bfd_vma)((cache_ptr+1)); | |
829 | break; | |
830 | } | |
831 | ||
832 | ||
7ed4093a SC |
833 | if (sym_is_debugger_info (cache_ptr)) { |
834 | cache_ptr->symbol.flags = BSF_DEBUGGING ; | |
835 | /* Work out the section correct for this symbol */ | |
836 | switch (cache_ptr->type & N_TYPE) | |
837 | { | |
838 | case N_TEXT: | |
839 | case N_FN: | |
840 | cache_ptr->symbol.section = obj_textsec (abfd); | |
841 | cache_ptr->symbol.value -= obj_textsec(abfd)->vma; | |
842 | break; | |
843 | case N_DATA: | |
844 | cache_ptr->symbol.value -= obj_datasec(abfd)->vma; | |
845 | cache_ptr->symbol.section = obj_datasec (abfd); | |
846 | break; | |
847 | case N_BSS : | |
848 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
849 | cache_ptr->symbol.value -= obj_bsssec(abfd)->vma; | |
850 | break; | |
851 | case N_ABS: | |
852 | default: | |
853 | cache_ptr->symbol.section = 0; | |
854 | break; | |
855 | } | |
856 | } | |
857 | else { | |
88dfcd68 | 858 | |
7ed4093a SC |
859 | if (sym_is_fortrancommon (cache_ptr)) |
860 | { | |
861 | cache_ptr->symbol.flags = BSF_FORT_COMM; | |
862 | cache_ptr->symbol.section = (asection *)NULL; | |
863 | } | |
864 | else { | |
865 | if (sym_is_undefined (cache_ptr)) { | |
866 | cache_ptr->symbol.flags = BSF_UNDEFINED; | |
867 | } | |
868 | else if (sym_is_global_defn (cache_ptr)) { | |
869 | cache_ptr->symbol.flags = BSF_GLOBAL | BSF_EXPORT; | |
870 | } | |
88dfcd68 | 871 | |
7ed4093a SC |
872 | else if (sym_is_absolute (cache_ptr)) { |
873 | cache_ptr->symbol.flags = BSF_ABSOLUTE; | |
874 | } | |
875 | else { | |
876 | cache_ptr->symbol.flags = BSF_LOCAL; | |
877 | } | |
88dfcd68 | 878 | |
7ed4093a SC |
879 | /* In a.out, the value of a symbol is always relative to the |
880 | * start of the file, if this is a data symbol we'll subtract | |
881 | * the size of the text section to get the section relative | |
882 | * value. If this is a bss symbol (which would be strange) | |
883 | * we'll subtract the size of the previous two sections | |
884 | * to find the section relative address. | |
885 | */ | |
88dfcd68 | 886 | |
7ed4093a SC |
887 | if (sym_in_text_section (cache_ptr)) { |
888 | cache_ptr->symbol.value -= obj_textsec(abfd)->vma; | |
889 | cache_ptr->symbol.section = obj_textsec (abfd); | |
890 | } | |
891 | else if (sym_in_data_section (cache_ptr)){ | |
892 | cache_ptr->symbol.value -= obj_datasec(abfd)->vma; | |
893 | cache_ptr->symbol.section = obj_datasec (abfd); | |
894 | } | |
895 | else if (sym_in_bss_section(cache_ptr)) { | |
896 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
897 | cache_ptr->symbol.value -= obj_bsssec(abfd)->vma; | |
898 | } | |
899 | else { | |
900 | cache_ptr->symbol.section = (asection *)NULL; | |
901 | cache_ptr->symbol.flags |= BSF_ABSOLUTE; | |
902 | } | |
903 | } | |
904 | } | |
905 | } | |
906 | } | |
907 | ||
908 | static void | |
909 | DEFUN(translate_to_native_sym_flags,(sym_pointer, cache_ptr, abfd), | |
910 | struct external_nlist *sym_pointer AND | |
911 | asymbol *cache_ptr AND | |
912 | bfd *abfd) | |
913 | { | |
914 | bfd_vma value = cache_ptr->value; | |
915 | ||
916 | if (bfd_get_section(cache_ptr)) { | |
917 | if (bfd_get_output_section(cache_ptr) == obj_bsssec (abfd)) { | |
918 | sym_pointer->e_type[0] |= N_BSS; | |
919 | } | |
920 | else if (bfd_get_output_section(cache_ptr) == obj_datasec (abfd)) { | |
921 | sym_pointer->e_type[0] |= N_DATA; | |
922 | } | |
923 | else if (bfd_get_output_section(cache_ptr) == obj_textsec (abfd)) { | |
924 | sym_pointer->e_type[0] |= N_TEXT; | |
925 | } | |
926 | else { | |
927 | bfd_error_vector.nonrepresentable_section(abfd, | |
928 | bfd_get_output_section(cache_ptr)->name); | |
929 | } | |
930 | /* Turn the symbol from section relative to absolute again */ | |
931 | ||
932 | value += | |
933 | cache_ptr->section->output_section->vma | |
934 | + cache_ptr->section->output_offset ; | |
935 | } | |
936 | else { | |
937 | sym_pointer->e_type[0] |= N_ABS; | |
938 | } | |
88dfcd68 SC |
939 | if (cache_ptr->flags & (BSF_WARNING)) { |
940 | (sym_pointer+1)->e_type[0] = 1; | |
941 | } | |
7ed4093a SC |
942 | if (cache_ptr->flags & (BSF_FORT_COMM | BSF_UNDEFINED)) { |
943 | sym_pointer->e_type[0] = (N_UNDF | N_EXT); | |
944 | } | |
945 | else { | |
946 | if (cache_ptr->flags & BSF_ABSOLUTE) { | |
947 | sym_pointer->e_type[0] |= N_ABS; | |
948 | } | |
949 | ||
950 | if (cache_ptr->flags & (BSF_GLOBAL | BSF_EXPORT)) { | |
951 | sym_pointer->e_type[0] |= N_EXT; | |
952 | } | |
953 | if (cache_ptr->flags & BSF_DEBUGGING) { | |
954 | sym_pointer->e_type [0]= ((aout_symbol_type *)cache_ptr)->type; | |
955 | } | |
956 | } | |
957 | PUT_WORD(abfd, value, sym_pointer->e_value); | |
958 | } | |
959 | \f | |
960 | /* Native-level interface to symbols. */ | |
961 | ||
962 | /* We read the symbols into a buffer, which is discarded when this | |
963 | function exits. We read the strings into a buffer large enough to | |
964 | hold them all plus all the cached symbol entries. */ | |
965 | ||
966 | asymbol * | |
967 | DEFUN(NAME(aout,make_empty_symbol),(abfd), | |
968 | bfd *abfd) | |
969 | { | |
970 | aout_symbol_type *new = | |
971 | (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type)); | |
972 | new->symbol.the_bfd = abfd; | |
973 | ||
974 | return &new->symbol; | |
975 | } | |
976 | ||
977 | boolean | |
978 | DEFUN(NAME(aout,slurp_symbol_table),(abfd), | |
979 | bfd *abfd) | |
980 | { | |
981 | bfd_size_type symbol_size; | |
982 | bfd_size_type string_size; | |
983 | unsigned char string_chars[BYTES_IN_WORD]; | |
984 | struct external_nlist *syms; | |
985 | char *strings; | |
986 | aout_symbol_type *cached; | |
987 | ||
988 | /* If there's no work to be done, don't do any */ | |
989 | if (obj_aout_symbols (abfd) != (aout_symbol_type *)NULL) return true; | |
990 | symbol_size = exec_hdr(abfd)->a_syms; | |
991 | if (symbol_size == 0) { | |
992 | bfd_error = no_symbols; | |
993 | return false; | |
994 | } | |
995 | ||
996 | bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET); | |
997 | if (bfd_read ((PTR)string_chars, BYTES_IN_WORD, 1, abfd) != BYTES_IN_WORD) | |
998 | return false; | |
999 | string_size = GET_WORD (abfd, string_chars); | |
1000 | ||
1001 | strings =(char *) bfd_alloc(abfd, string_size + 1); | |
1002 | cached = (aout_symbol_type *) | |
1003 | bfd_zalloc(abfd, (bfd_size_type)(bfd_get_symcount (abfd) * sizeof(aout_symbol_type))); | |
67c060c3 SC |
1004 | |
1005 | /* malloc this, so we can free it if simply. The symbol caching | |
1006 | might want to allocate onto the bfd's obstack */ | |
1007 | syms = (struct external_nlist *) malloc(symbol_size); | |
7ed4093a SC |
1008 | bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET); |
1009 | if (bfd_read ((PTR)syms, 1, symbol_size, abfd) != symbol_size) { | |
1010 | bailout: | |
67c060c3 | 1011 | if (syms) free (syms); |
7ed4093a SC |
1012 | if (cached) bfd_release (abfd, cached); |
1013 | if (strings)bfd_release (abfd, strings); | |
1014 | return false; | |
1015 | } | |
1016 | ||
1017 | bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET); | |
1018 | if (bfd_read ((PTR)strings, 1, string_size, abfd) != string_size) { | |
1019 | goto bailout; | |
1020 | } | |
1021 | ||
1022 | /* OK, now walk the new symtable, cacheing symbol properties */ | |
1023 | { | |
1024 | register struct external_nlist *sym_pointer; | |
1025 | register struct external_nlist *sym_end = syms + bfd_get_symcount (abfd); | |
1026 | register aout_symbol_type *cache_ptr = cached; | |
1027 | ||
1028 | /* Run through table and copy values */ | |
1029 | for (sym_pointer = syms, cache_ptr = cached; | |
1030 | sym_pointer < sym_end; sym_pointer++, cache_ptr++) | |
1031 | { | |
1032 | bfd_vma x = GET_WORD(abfd, sym_pointer->e_strx); | |
1033 | cache_ptr->symbol.the_bfd = abfd; | |
1034 | if (x) | |
1035 | cache_ptr->symbol.name = x + strings; | |
1036 | else | |
1037 | cache_ptr->symbol.name = (char *)NULL; | |
1038 | ||
1039 | cache_ptr->symbol.value = GET_SWORD(abfd, sym_pointer->e_value); | |
1040 | cache_ptr->desc = bfd_get_16(abfd, sym_pointer->e_desc); | |
1041 | cache_ptr->other =bfd_get_8(abfd, sym_pointer->e_other); | |
1042 | cache_ptr->type = bfd_get_8(abfd, sym_pointer->e_type); | |
1043 | cache_ptr->symbol.udata = 0; | |
1044 | translate_from_native_sym_flags (sym_pointer, cache_ptr, abfd); | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | obj_aout_symbols (abfd) = cached; | |
67c060c3 | 1049 | free((PTR)syms); |
7ed4093a SC |
1050 | |
1051 | return true; | |
1052 | } | |
1053 | ||
1054 | ||
1055 | void | |
1056 | DEFUN(NAME(aout,write_syms),(abfd), | |
1057 | bfd *abfd) | |
1058 | { | |
1059 | unsigned int count ; | |
1060 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1061 | ||
1062 | bfd_size_type stindex = BYTES_IN_WORD; /* initial string length */ | |
1063 | ||
1064 | for (count = 0; count < bfd_get_symcount (abfd); count++) { | |
1065 | asymbol *g = generic[count]; | |
1066 | struct external_nlist nsp; | |
1067 | ||
1068 | ||
1069 | if (g->name) { | |
1070 | unsigned int length = strlen(g->name) +1; | |
1071 | PUT_WORD (abfd, stindex, (unsigned char *)nsp.e_strx); | |
1072 | stindex += length; | |
1073 | } | |
1074 | else { | |
1075 | PUT_WORD (abfd, 0, (unsigned char *)nsp.e_strx); | |
1076 | } | |
1077 | ||
1078 | if (g->the_bfd->xvec->flavour == abfd->xvec->flavour) | |
1079 | { | |
1080 | bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc); | |
1081 | bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other); | |
1082 | bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type); | |
1083 | } | |
1084 | else | |
1085 | { | |
1086 | bfd_h_put_16(abfd,0, nsp.e_desc); | |
1087 | bfd_h_put_8(abfd, 0, nsp.e_other); | |
1088 | bfd_h_put_8(abfd, 0, nsp.e_type); | |
1089 | } | |
1090 | ||
1091 | ||
1092 | ||
1093 | translate_to_native_sym_flags (&nsp, (PTR)g, abfd); | |
1094 | ||
1095 | bfd_write((PTR)&nsp,1,EXTERNAL_LIST_SIZE, abfd); | |
1096 | } | |
1097 | ||
1098 | ||
1099 | /* Now output the strings. Be sure to put string length into correct | |
1100 | * byte ordering before writing it. | |
1101 | */ | |
1102 | { | |
1103 | char buffer[BYTES_IN_WORD]; | |
1104 | PUT_WORD (abfd, stindex, (unsigned char *)buffer); | |
1105 | ||
1106 | bfd_write((PTR)buffer, 1, BYTES_IN_WORD, abfd); | |
1107 | } | |
1108 | generic = bfd_get_outsymbols(abfd); | |
1109 | for (count = 0; count < bfd_get_symcount(abfd); count++) | |
1110 | { | |
1111 | asymbol *g = *(generic++); | |
1112 | ||
1113 | if (g->name) | |
1114 | { | |
1115 | size_t length = strlen(g->name)+1; | |
1116 | bfd_write((PTR)g->name, 1, length, abfd); | |
1117 | } | |
1118 | if ((g->flags & BSF_FAKE)==0) { | |
c618de01 | 1119 | g->KEEPIT = (KEEPITTYPE) count; |
7ed4093a SC |
1120 | } |
1121 | } | |
1122 | } | |
1123 | ||
1124 | ||
1125 | ||
1126 | unsigned int | |
1127 | DEFUN(NAME(aout,get_symtab),(abfd, location), | |
1128 | bfd *abfd AND | |
1129 | asymbol **location) | |
1130 | { | |
1131 | unsigned int counter = 0; | |
1132 | aout_symbol_type *symbase; | |
1133 | ||
1134 | if (!NAME(aout,slurp_symbol_table)(abfd)) return 0; | |
1135 | ||
1136 | for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);) | |
1137 | *(location++) = (asymbol *)( symbase++); | |
1138 | *location++ =0; | |
1139 | return bfd_get_symcount(abfd); | |
1140 | } | |
1141 | ||
1142 | \f | |
1143 | /* Standard reloc stuff */ | |
1144 | /* Output standard relocation information to a file in target byte order. */ | |
1145 | ||
1146 | void | |
1147 | DEFUN(NAME(aout,swap_std_reloc_out),(abfd, g, natptr), | |
1148 | bfd *abfd AND | |
1149 | arelent *g AND | |
1150 | struct reloc_std_external *natptr) | |
1151 | { | |
1152 | int r_index; | |
1153 | int r_extern; | |
1154 | unsigned int r_length; | |
1155 | int r_pcrel; | |
1156 | int r_baserel, r_jmptable, r_relative; | |
1157 | unsigned int r_addend; | |
1158 | ||
1159 | PUT_WORD(abfd, g->address, natptr->r_address); | |
1160 | ||
1161 | r_length = g->howto->size ; /* Size as a power of two */ | |
1162 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
1163 | /* r_baserel, r_jmptable, r_relative??? FIXME-soon */ | |
1164 | r_baserel = 0; | |
1165 | r_jmptable = 0; | |
1166 | r_relative = 0; | |
1167 | ||
1168 | r_addend = g->addend; /* Start here, see how it goes */ | |
1169 | ||
1170 | /* name was clobbered by aout_write_syms to be symbol index */ | |
1171 | ||
1172 | if (g->sym_ptr_ptr != NULL) | |
1173 | { | |
1174 | if ((*(g->sym_ptr_ptr))->section) { | |
1175 | /* put the section offset into the addend for output */ | |
1176 | r_addend += (*(g->sym_ptr_ptr))->section->vma; | |
1177 | } | |
1178 | ||
c618de01 | 1179 | r_index = ((*(g->sym_ptr_ptr))->KEEPIT); |
7ed4093a SC |
1180 | r_extern = 1; |
1181 | } | |
1182 | else { | |
1183 | r_extern = 0; | |
1184 | if (g->section == NULL) { | |
1185 | /* It is possible to have a reloc with nothing, we generate an | |
1186 | abs + 0 */ | |
1187 | r_addend = 0; | |
1188 | r_index = N_ABS | N_EXT; | |
1189 | } | |
1190 | else if(g->section->output_section == obj_textsec(abfd)) { | |
1191 | r_index = N_TEXT | N_EXT; | |
1192 | r_addend += g->section->output_section->vma; | |
1193 | } | |
1194 | else if (g->section->output_section == obj_datasec(abfd)) { | |
1195 | r_index = N_DATA | N_EXT; | |
1196 | r_addend += g->section->output_section->vma; | |
1197 | } | |
1198 | else if (g->section->output_section == obj_bsssec(abfd)) { | |
1199 | r_index = N_BSS | N_EXT ; | |
1200 | r_addend += g->section->output_section->vma; | |
1201 | } | |
1202 | else { | |
1203 | BFD_ASSERT(0); | |
1204 | } | |
1205 | } | |
1206 | ||
1207 | /* now the fun stuff */ | |
1208 | if (abfd->xvec->header_byteorder_big_p != false) { | |
1209 | natptr->r_index[0] = r_index >> 16; | |
1210 | natptr->r_index[1] = r_index >> 8; | |
1211 | natptr->r_index[2] = r_index; | |
1212 | natptr->r_type[0] = | |
1213 | (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0) | |
1214 | | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0) | |
1215 | | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0) | |
1216 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0) | |
1217 | | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0) | |
1218 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG); | |
1219 | } else { | |
1220 | natptr->r_index[2] = r_index >> 16; | |
1221 | natptr->r_index[1] = r_index >> 8; | |
1222 | natptr->r_index[0] = r_index; | |
1223 | natptr->r_type[0] = | |
1224 | (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0) | |
1225 | | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0) | |
1226 | | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0) | |
1227 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0) | |
1228 | | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0) | |
1229 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
1230 | } | |
1231 | } | |
1232 | ||
1233 | ||
1234 | /* Extended stuff */ | |
1235 | /* Output extended relocation information to a file in target byte order. */ | |
1236 | ||
1237 | void | |
1238 | DEFUN(NAME(aout,swap_ext_reloc_out),(abfd, g, natptr), | |
1239 | bfd *abfd AND | |
1240 | arelent *g AND | |
1241 | register struct reloc_ext_external *natptr) | |
1242 | { | |
1243 | int r_index; | |
1244 | int r_extern; | |
1245 | unsigned int r_type; | |
1246 | unsigned int r_addend; | |
1247 | ||
1248 | PUT_WORD (abfd, g->address, natptr->r_address); | |
1249 | ||
1250 | /* Find a type in the output format which matches the input howto - | |
1251 | at the moment we assume input format == output format FIXME!! */ | |
1252 | r_type = (enum reloc_type) g->howto->type; | |
1253 | ||
1254 | r_addend = g->addend; /* Start here, see how it goes */ | |
1255 | ||
1256 | /* name was clobbered by aout_write_syms to be symbol index*/ | |
1257 | ||
1258 | if (g->sym_ptr_ptr != NULL) | |
1259 | { | |
1260 | if ((*(g->sym_ptr_ptr))->section) { | |
1261 | /* put the section offset into the addend for output */ | |
1262 | r_addend += (*(g->sym_ptr_ptr))->section->vma; | |
1263 | } | |
1264 | ||
c618de01 | 1265 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); |
7ed4093a SC |
1266 | r_extern = 1; |
1267 | } | |
1268 | else { | |
1269 | r_extern = 0; | |
1270 | if (g->section == NULL) { | |
1271 | BFD_ASSERT(0); | |
1272 | r_index = N_ABS | N_EXT; | |
1273 | } | |
1274 | else if(g->section->output_section == obj_textsec(abfd)) { | |
1275 | r_index = N_TEXT | N_EXT; | |
1276 | r_addend += g->section->output_section->vma; | |
1277 | } | |
1278 | else if (g->section->output_section == obj_datasec(abfd)) { | |
1279 | r_index = N_DATA | N_EXT; | |
1280 | r_addend += g->section->output_section->vma; | |
1281 | } | |
1282 | else if (g->section->output_section == obj_bsssec(abfd)) { | |
1283 | r_index = N_BSS | N_EXT ; | |
1284 | r_addend += g->section->output_section->vma; | |
1285 | } | |
1286 | else { | |
1287 | BFD_ASSERT(0); | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | /* now the fun stuff */ | |
1292 | if (abfd->xvec->header_byteorder_big_p != false) { | |
1293 | natptr->r_index[0] = r_index >> 16; | |
1294 | natptr->r_index[1] = r_index >> 8; | |
1295 | natptr->r_index[2] = r_index; | |
1296 | natptr->r_type[0] = | |
1297 | (r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0) | |
1298 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG); | |
1299 | } else { | |
1300 | natptr->r_index[2] = r_index >> 16; | |
1301 | natptr->r_index[1] = r_index >> 8; | |
1302 | natptr->r_index[0] = r_index; | |
1303 | natptr->r_type[0] = | |
1304 | (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0) | |
1305 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
1306 | } | |
1307 | ||
1308 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
1309 | } | |
1310 | ||
1311 | #define MOVE_ADDRESS(ad) \ | |
1312 | if (r_extern) { \ | |
1313 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
1314 | cache_ptr->section = (asection *)NULL; \ | |
1315 | cache_ptr->addend = ad; \ | |
1316 | } else { \ | |
1317 | cache_ptr->sym_ptr_ptr = (asymbol **)NULL; \ | |
1318 | switch (r_index) { \ | |
1319 | case N_TEXT: \ | |
1320 | case N_TEXT | N_EXT: \ | |
1321 | cache_ptr->section = obj_textsec(abfd); \ | |
1322 | cache_ptr->addend = ad - su->textsec->vma; \ | |
1323 | break; \ | |
1324 | case N_DATA: \ | |
1325 | case N_DATA | N_EXT: \ | |
1326 | cache_ptr->section = obj_datasec(abfd); \ | |
1327 | cache_ptr->addend = ad - su->datasec->vma; \ | |
1328 | break; \ | |
1329 | case N_BSS: \ | |
1330 | case N_BSS | N_EXT: \ | |
1331 | cache_ptr->section = obj_bsssec(abfd); \ | |
1332 | cache_ptr->addend = ad - su->bsssec->vma; \ | |
1333 | break; \ | |
1334 | case N_ABS: \ | |
1335 | case N_ABS | N_EXT: \ | |
1336 | cache_ptr->section = NULL; /* No section */ \ | |
1337 | cache_ptr->addend = ad; /* FIXME, is this right? */ \ | |
1338 | BFD_ASSERT(1); \ | |
1339 | break; \ | |
1340 | default: \ | |
1341 | cache_ptr->section = NULL; /* No section */ \ | |
1342 | cache_ptr->addend = ad; /* FIXME, is this right? */ \ | |
1343 | BFD_ASSERT(1); \ | |
1344 | break; \ | |
1345 | } \ | |
1346 | } \ | |
1347 | ||
1348 | void | |
1349 | DEFUN(NAME(aout,swap_ext_reloc_in), (abfd, bytes, cache_ptr, symbols), | |
1350 | bfd *abfd AND | |
1351 | struct reloc_ext_external *bytes AND | |
1352 | arelent *cache_ptr AND | |
1353 | asymbol **symbols) | |
1354 | { | |
1355 | int r_index; | |
1356 | int r_extern; | |
1357 | unsigned int r_type; | |
1358 | struct aoutdata *su = (struct aoutdata *)(abfd->tdata); | |
1359 | ||
1360 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
1361 | ||
1362 | /* now the fun stuff */ | |
1363 | if (abfd->xvec->header_byteorder_big_p != false) { | |
1364 | r_index = (bytes->r_index[0] << 16) | |
1365 | | (bytes->r_index[1] << 8) | |
1366 | | bytes->r_index[2]; | |
1367 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
1368 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
1369 | >> RELOC_EXT_BITS_TYPE_SH_BIG; | |
1370 | } else { | |
1371 | r_index = (bytes->r_index[2] << 16) | |
1372 | | (bytes->r_index[1] << 8) | |
1373 | | bytes->r_index[0]; | |
1374 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
1375 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
1376 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE; | |
1377 | } | |
1378 | ||
1379 | cache_ptr->howto = howto_table_ext + r_type; | |
1380 | MOVE_ADDRESS(GET_SWORD(abfd,bytes->r_addend)); | |
1381 | } | |
1382 | ||
1383 | void | |
1384 | DEFUN(NAME(aout,swap_std_reloc_in), (abfd, bytes, cache_ptr, symbols), | |
1385 | bfd *abfd AND | |
1386 | struct reloc_std_external *bytes AND | |
1387 | arelent *cache_ptr AND | |
1388 | asymbol **symbols) | |
1389 | { | |
1390 | int r_index; | |
1391 | int r_extern; | |
1392 | unsigned int r_length; | |
1393 | int r_pcrel; | |
1394 | int r_baserel, r_jmptable, r_relative; | |
1395 | struct aoutdata *su = (struct aoutdata *)(abfd->tdata); | |
1396 | ||
1397 | cache_ptr->address = (int32_type)(bfd_h_get_32 (abfd, bytes->r_address)); | |
1398 | ||
1399 | /* now the fun stuff */ | |
1400 | if (abfd->xvec->header_byteorder_big_p != false) { | |
1401 | r_index = (bytes->r_index[0] << 16) | |
1402 | | (bytes->r_index[1] << 8) | |
1403 | | bytes->r_index[2]; | |
1404 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
1405 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
1406 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
1407 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
1408 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
1409 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
1410 | >> RELOC_STD_BITS_LENGTH_SH_BIG; | |
1411 | } else { | |
1412 | r_index = (bytes->r_index[2] << 16) | |
1413 | | (bytes->r_index[1] << 8) | |
1414 | | bytes->r_index[0]; | |
1415 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
1416 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
1417 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
1418 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
1419 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
1420 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
1421 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE; | |
1422 | } | |
1423 | ||
1424 | cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel; | |
1425 | /* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */ | |
1426 | ||
1427 | MOVE_ADDRESS(0); | |
1428 | } | |
1429 | ||
1430 | /* Reloc hackery */ | |
1431 | ||
1432 | boolean | |
1433 | DEFUN(NAME(aout,slurp_reloc_table),(abfd, asect, symbols), | |
1434 | bfd *abfd AND | |
1435 | sec_ptr asect AND | |
1436 | asymbol **symbols) | |
1437 | { | |
1438 | unsigned int count; | |
1439 | bfd_size_type reloc_size; | |
1440 | PTR relocs; | |
1441 | arelent *reloc_cache; | |
1442 | size_t each_size; | |
1443 | ||
1444 | if (asect->relocation) return true; | |
1445 | ||
1446 | if (asect->flags & SEC_CONSTRUCTOR) return true; | |
1447 | ||
1448 | if (asect == obj_datasec (abfd)) { | |
1449 | reloc_size = exec_hdr(abfd)->a_drsize; | |
1450 | goto doit; | |
1451 | } | |
1452 | ||
1453 | if (asect == obj_textsec (abfd)) { | |
1454 | reloc_size = exec_hdr(abfd)->a_trsize; | |
1455 | goto doit; | |
1456 | } | |
1457 | ||
1458 | bfd_error = invalid_operation; | |
1459 | return false; | |
1460 | ||
1461 | doit: | |
1462 | bfd_seek (abfd, asect->rel_filepos, SEEK_SET); | |
1463 | each_size = obj_reloc_entry_size (abfd); | |
1464 | ||
1465 | count = reloc_size / each_size; | |
1466 | ||
1467 | ||
1468 | reloc_cache = (arelent *) bfd_zalloc (abfd, (size_t)(count * sizeof | |
1469 | (arelent))); | |
1470 | if (!reloc_cache) { | |
1471 | nomem: | |
1472 | bfd_error = no_memory; | |
1473 | return false; | |
1474 | } | |
1475 | ||
1476 | relocs = (PTR) bfd_alloc (abfd, reloc_size); | |
1477 | if (!relocs) { | |
1478 | bfd_release (abfd, reloc_cache); | |
1479 | goto nomem; | |
1480 | } | |
1481 | ||
1482 | if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) { | |
1483 | bfd_release (abfd, relocs); | |
1484 | bfd_release (abfd, reloc_cache); | |
1485 | bfd_error = system_call_error; | |
1486 | return false; | |
1487 | } | |
1488 | ||
1489 | if (each_size == RELOC_EXT_SIZE) { | |
1490 | register struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; | |
1491 | unsigned int counter = 0; | |
1492 | arelent *cache_ptr = reloc_cache; | |
1493 | ||
1494 | for (; counter < count; counter++, rptr++, cache_ptr++) { | |
1495 | NAME(aout,swap_ext_reloc_in)(abfd, rptr, cache_ptr, symbols); | |
1496 | } | |
1497 | } else { | |
1498 | register struct reloc_std_external *rptr = (struct reloc_std_external*) relocs; | |
1499 | unsigned int counter = 0; | |
1500 | arelent *cache_ptr = reloc_cache; | |
1501 | ||
1502 | for (; counter < count; counter++, rptr++, cache_ptr++) { | |
1503 | NAME(aout,swap_std_reloc_in)(abfd, rptr, cache_ptr, symbols); | |
1504 | } | |
1505 | ||
1506 | } | |
1507 | ||
1508 | bfd_release (abfd,relocs); | |
1509 | asect->relocation = reloc_cache; | |
1510 | asect->reloc_count = count; | |
1511 | return true; | |
1512 | } | |
1513 | ||
1514 | ||
1515 | ||
1516 | /* Write out a relocation section into an object file. */ | |
1517 | ||
1518 | boolean | |
1519 | DEFUN(NAME(aout,squirt_out_relocs),(abfd, section), | |
1520 | bfd *abfd AND | |
1521 | asection *section) | |
1522 | { | |
1523 | arelent **generic; | |
1524 | unsigned char *native, *natptr; | |
1525 | size_t each_size; | |
1526 | ||
1527 | unsigned int count = section->reloc_count; | |
1528 | size_t natsize; | |
1529 | ||
1530 | if (count == 0) return true; | |
1531 | ||
1532 | each_size = obj_reloc_entry_size (abfd); | |
1533 | natsize = each_size * count; | |
1534 | native = (unsigned char *) bfd_zalloc (abfd, natsize); | |
1535 | if (!native) { | |
1536 | bfd_error = no_memory; | |
1537 | return false; | |
1538 | } | |
1539 | ||
1540 | generic = section->orelocation; | |
1541 | ||
1542 | if (each_size == RELOC_EXT_SIZE) | |
1543 | { | |
1544 | for (natptr = native; | |
1545 | count != 0; | |
1546 | --count, natptr += each_size, ++generic) | |
1547 | NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr); | |
1548 | } | |
1549 | else | |
1550 | { | |
1551 | for (natptr = native; | |
1552 | count != 0; | |
1553 | --count, natptr += each_size, ++generic) | |
1554 | NAME(aout,swap_std_reloc_out)(abfd, *generic, (struct reloc_std_external *)natptr); | |
1555 | } | |
1556 | ||
1557 | if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) { | |
1558 | bfd_release(abfd, native); | |
1559 | return false; | |
1560 | } | |
1561 | bfd_release (abfd, native); | |
1562 | ||
1563 | return true; | |
1564 | } | |
1565 | ||
1566 | /* This is stupid. This function should be a boolean predicate */ | |
1567 | unsigned int | |
1568 | DEFUN(NAME(aout,canonicalize_reloc),(abfd, section, relptr, symbols), | |
1569 | bfd *abfd AND | |
1570 | sec_ptr section AND | |
1571 | arelent **relptr AND | |
1572 | asymbol **symbols) | |
1573 | { | |
1574 | arelent *tblptr = section->relocation; | |
1575 | unsigned int count; | |
1576 | ||
1577 | if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols))) | |
1578 | return 0; | |
1579 | ||
1580 | if (section->flags & SEC_CONSTRUCTOR) { | |
1581 | arelent_chain *chain = section->constructor_chain; | |
1582 | for (count = 0; count < section->reloc_count; count ++) { | |
1583 | *relptr ++ = &chain->relent; | |
1584 | chain = chain->next; | |
1585 | } | |
1586 | } | |
1587 | else { | |
1588 | tblptr = section->relocation; | |
1589 | if (!tblptr) return 0; | |
1590 | ||
1591 | for (count = 0; count++ < section->reloc_count;) | |
1592 | { | |
1593 | *relptr++ = tblptr++; | |
1594 | } | |
1595 | } | |
1596 | *relptr = 0; | |
1597 | ||
1598 | return section->reloc_count; | |
1599 | } | |
1600 | ||
1601 | unsigned int | |
1602 | DEFUN(NAME(aout,get_reloc_upper_bound),(abfd, asect), | |
1603 | bfd *abfd AND | |
1604 | sec_ptr asect) | |
1605 | { | |
1606 | if (bfd_get_format (abfd) != bfd_object) { | |
1607 | bfd_error = invalid_operation; | |
1608 | return 0; | |
1609 | } | |
1610 | if (asect->flags & SEC_CONSTRUCTOR) { | |
1611 | return (sizeof (arelent *) * (asect->reloc_count+1)); | |
1612 | } | |
1613 | ||
1614 | ||
1615 | if (asect == obj_datasec (abfd)) | |
1616 | return (sizeof (arelent *) * | |
1617 | ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd)) | |
1618 | +1)); | |
1619 | ||
1620 | if (asect == obj_textsec (abfd)) | |
1621 | return (sizeof (arelent *) * | |
1622 | ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd)) | |
1623 | +1)); | |
1624 | ||
1625 | bfd_error = invalid_operation; | |
1626 | return 0; | |
1627 | } | |
1628 | ||
1629 | \f | |
1630 | unsigned int | |
1631 | DEFUN(NAME(aout,get_symtab_upper_bound),(abfd), | |
1632 | bfd *abfd) | |
1633 | { | |
1634 | if (!NAME(aout,slurp_symbol_table)(abfd)) return 0; | |
1635 | ||
1636 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
1637 | } | |
1638 | alent * | |
1639 | DEFUN(NAME(aout,get_lineno),(ignore_abfd, ignore_symbol), | |
1640 | bfd *ignore_abfd AND | |
1641 | asymbol *ignore_symbol) | |
1642 | { | |
1643 | return (alent *)NULL; | |
1644 | } | |
1645 | ||
1646 | ||
1647 | void | |
1648 | DEFUN(NAME(aout,print_symbol),(ignore_abfd, afile, symbol, how), | |
1649 | bfd *ignore_abfd AND | |
1650 | PTR afile AND | |
1651 | asymbol *symbol AND | |
1652 | bfd_print_symbol_enum_type how) | |
1653 | { | |
1654 | FILE *file = (FILE *)afile; | |
1655 | ||
1656 | switch (how) { | |
1657 | case bfd_print_symbol_name_enum: | |
1658 | fprintf(file,"%s", symbol->name); | |
1659 | break; | |
1660 | case bfd_print_symbol_type_enum: | |
1661 | fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
1662 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
1663 | (unsigned)(aout_symbol(symbol)->type)); | |
1664 | break; | |
1665 | case bfd_print_symbol_all_enum: | |
1666 | { | |
1667 | CONST char *section_name = symbol->section == (asection *)NULL ? | |
1668 | "*abs" : symbol->section->name; | |
1669 | ||
1670 | bfd_print_symbol_vandf((PTR)file,symbol); | |
1671 | ||
1672 | fprintf(file," %-5s %04x %02x %02x %s", | |
1673 | section_name, | |
1674 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
1675 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
1676 | (unsigned)(aout_symbol(symbol)->type & 0xff), | |
1677 | symbol->name); | |
1678 | } | |
1679 | break; | |
1680 | } | |
1681 | } | |
1682 | ||
1683 | /* | |
6724ff46 | 1684 | provided a BFD, a section and an offset into the section, calculate |
7ed4093a SC |
1685 | and return the name of the source file and the line nearest to the |
1686 | wanted location. | |
1687 | */ | |
1688 | ||
1689 | boolean | |
1690 | DEFUN(NAME(aout,find_nearest_line),(abfd, | |
1691 | section, | |
1692 | symbols, | |
1693 | offset, | |
1694 | filename_ptr, | |
1695 | functionname_ptr, | |
1696 | line_ptr), | |
1697 | bfd *abfd AND | |
1698 | asection *section AND | |
1699 | asymbol **symbols AND | |
1700 | bfd_vma offset AND | |
1701 | CONST char **filename_ptr AND | |
1702 | CONST char **functionname_ptr AND | |
1703 | unsigned int *line_ptr) | |
1704 | { | |
1705 | /* Run down the file looking for the filename, function and linenumber */ | |
1706 | asymbol **p; | |
1707 | static char buffer[100]; | |
1708 | bfd_vma high_line_vma = ~0; | |
1709 | bfd_vma low_func_vma = 0; | |
1710 | asymbol *func = 0; | |
1711 | *filename_ptr = abfd->filename; | |
1712 | *functionname_ptr = 0; | |
1713 | *line_ptr = 0; | |
1714 | if (symbols != (asymbol **)NULL) { | |
1715 | for (p = symbols; *p; p++) { | |
1716 | aout_symbol_type *q = (aout_symbol_type *)(*p); | |
1717 | switch (q->type){ | |
1718 | case N_SO: | |
1719 | *filename_ptr = q->symbol.name; | |
1720 | if (obj_textsec(abfd) != section) { | |
1721 | return true; | |
1722 | } | |
1723 | break; | |
1724 | case N_SLINE: | |
1725 | ||
1726 | case N_DSLINE: | |
1727 | case N_BSLINE: | |
1728 | /* We'll keep this if it resolves nearer than the one we have already */ | |
1729 | if (q->symbol.value >= offset && | |
1730 | q->symbol.value < high_line_vma) { | |
1731 | *line_ptr = q->desc; | |
1732 | high_line_vma = q->symbol.value; | |
1733 | } | |
1734 | break; | |
1735 | case N_FUN: | |
1736 | { | |
1737 | /* We'll keep this if it is nearer than the one we have already */ | |
1738 | if (q->symbol.value >= low_func_vma && | |
1739 | q->symbol.value <= offset) { | |
1740 | low_func_vma = q->symbol.value; | |
1741 | func = (asymbol *)q; | |
1742 | } | |
1743 | if (*line_ptr && func) { | |
1744 | CONST char *function = func->name; | |
1745 | char *p; | |
1746 | strncpy(buffer, function, sizeof(buffer)-1); | |
1747 | buffer[sizeof(buffer)-1] = 0; | |
1748 | /* Have to remove : stuff */ | |
1749 | p = strchr(buffer,':'); | |
6f715d66 | 1750 | if (p != NULL) { *p = NULL; } |
7ed4093a SC |
1751 | *functionname_ptr = buffer; |
1752 | return true; | |
1753 | ||
1754 | } | |
1755 | } | |
1756 | break; | |
1757 | } | |
1758 | } | |
1759 | } | |
1760 | ||
1761 | return true; | |
1762 | ||
1763 | } | |
1764 | ||
1765 | int | |
1766 | DEFUN(NAME(aout,sizeof_headers),(ignore_abfd, execable), | |
1767 | bfd *ignore_abfd AND | |
1768 | boolean execable) | |
1769 | { | |
1770 | return EXEC_BYTES_SIZE; | |
1771 | } |