Commit | Line | Data |
---|---|---|
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 | ||
c6705697 SC |
75 | The file host-aout.c is a special case. It is for a large set of hosts |
76 | that use ``more or less standard'' a.out files, and for which cross-debugging | |
77 | is not interesting. It uses the standard 32-bit a.out support routines, | |
78 | but determines the file offsets and addresses of the text, data, | |
79 | and BSS sections, the machine architecture and machine type, | |
80 | and the entry point address, in a host-dependent manner. Once these | |
81 | values have been determined, generic code is used to handle the | |
82 | object file. | |
83 | ||
84 | When porting it to run on a new system, you must supply: | |
85 | ||
86 | HOST_PAGE_SIZE | |
87 | HOST_SEGMENT_SIZE | |
88 | HOST_MACHINE_ARCH (optional) | |
89 | HOST_MACHINE_MACHINE (optional) | |
90 | HOST_TEXT_START_ADDR | |
91 | HOST_STACK_END_ADDR | |
92 | ||
93 | in the file ../include/sys/h-XXX.h (for your host). These values, plus | |
94 | the structures and macros defined in <a.out.h> on your host system, will | |
95 | produce a BFD target that will access ordinary a.out files on your host. | |
96 | ||
97 | To configure a new machine to use host-aout.c, specify: | |
98 | ||
99 | TDEFINES = -DDEFAULT_VECTOR=host_aout_big_vec | |
100 | TDEPFILES= host-aout.o trad-core.o | |
101 | ||
102 | in the config/t-XXX file, and modify configure.in to use the | |
103 | t-XXX file (by setting "bfd_target=XXX") when your configuration is | |
104 | selected. | |
105 | ||
6f715d66 SC |
106 | */ |
107 | ||
c618de01 SC |
108 | #define KEEPIT flags |
109 | #define KEEPITTYPE int | |
67c060c3 SC |
110 | |
111 | #include "bfd.h" | |
7ed4093a SC |
112 | #include <sysdep.h> |
113 | #include <ansidecl.h> | |
114 | ||
7ed4093a | 115 | struct external_exec; |
6f715d66 | 116 | #include "libaout.h" |
7ed4093a SC |
117 | #include "libbfd.h" |
118 | #include "aout64.h" | |
119 | #include "stab.gnu.h" | |
120 | #include "ar.h" | |
121 | ||
122 | void (*bfd_error_trap)(); | |
123 | ||
6f715d66 SC |
124 | /*doc* |
125 | @subsection relocations | |
126 | The file @code{aoutx.h} caters for both the @emph{standard} and | |
127 | @emph{extended} forms of a.out relocation records. | |
7ed4093a | 128 | |
6f715d66 SC |
129 | The standard records are characterised by containing only an address, |
130 | a symbol index and a type field. The extended records (used on 29ks | |
131 | and sparcs) also have a full integer for an addend. | |
132 | */ | |
7ed4093a | 133 | #define CTOR_TABLE_RELOC_IDX 2 |
67c060c3 SC |
134 | |
135 | /* start-sanitize-v9 */ | |
136 | /* Provided the symbol, returns the value reffed */ | |
137 | static bfd_vma | |
138 | DEFUN(get_symbol_value,(symbol, input_section), | |
139 | asymbol *symbol AND | |
140 | asection *input_section) | |
141 | { | |
142 | bfd_vma relocation = 0; | |
143 | ||
144 | if (symbol != (asymbol *)NULL) { | |
145 | if (symbol->flags & BSF_FORT_COMM) { | |
146 | relocation = 0; | |
147 | } else { | |
148 | relocation = symbol->value; | |
149 | } | |
150 | if (symbol->section != (asection *)NULL) { | |
151 | relocation += symbol->section->output_section->vma + | |
152 | symbol->section->output_offset; | |
153 | } | |
154 | } | |
155 | else { | |
156 | /* No symbol, so use the input section value */ | |
157 | relocation = input_section->output_section->vma + input_section->output_offset; | |
158 | } | |
159 | return relocation; | |
160 | } | |
161 | ||
162 | static bfd_reloc_status_enum_type | |
163 | DEFUN(reloc64,(abfd, reloc_entry, symbol_in, data, input_section), | |
164 | bfd *abfd AND | |
165 | arelent *reloc_entry AND | |
166 | asymbol *symbol_in AND | |
167 | unsigned char *data AND | |
168 | asection *input_section) | |
169 | { | |
170 | bfd_vma sym_value = get_symbol_value(symbol_in, input_section); | |
171 | bfd_vma value = bfd_get_64(abfd, (bfd_byte *)data + reloc_entry->address); | |
172 | value += sym_value + reloc_entry->addend; | |
173 | bfd_put_64(abfd, value, (bfd_byte *)data+reloc_entry->address); | |
174 | return bfd_reloc_ok; | |
175 | } | |
176 | ||
177 | static bfd_reloc_status_enum_type | |
178 | DEFUN(disp64,(abfd, reloc_entry, symbol_in, data, input_section), | |
179 | bfd *abfd AND | |
180 | arelent *reloc_entry AND | |
181 | asymbol *symbol_in AND | |
182 | unsigned char *data AND | |
183 | asection *input_section) | |
184 | { | |
185 | bfd_vma sym_value = get_symbol_value(symbol_in, input_section); | |
186 | ||
187 | /* bfd_get_64(abfd, (bfd_byte *)data + reloc_entry->address);*/ | |
188 | bfd_vma value = 0; | |
189 | value += sym_value + reloc_entry->addend; | |
190 | ||
191 | /* Subtract from the calculated value the pc */ | |
192 | value -= reloc_entry->address + input_section->output_section->vma; | |
193 | bfd_put_64(abfd, value, (bfd_byte *)data+reloc_entry->address); | |
194 | return bfd_reloc_ok; | |
195 | } | |
196 | ||
197 | static bfd_reloc_status_enum_type | |
198 | DEFUN(hhi22,(abfd, reloc_entry, symbol_in, data, input_section), | |
199 | bfd *abfd AND | |
200 | arelent *reloc_entry AND | |
201 | asymbol *symbol_in AND | |
202 | unsigned char *data AND | |
203 | asection *input_section) | |
204 | { | |
205 | bfd_vma sym_value = get_symbol_value(symbol_in, input_section); | |
206 | ||
207 | bfd_vma value = bfd_get_32(abfd, (bfd_byte *)data + reloc_entry->address); | |
208 | ||
209 | value = (value & ~0x3fffff) | ( ((sym_value + reloc_entry->addend) >> 32+10) & 0x3fffff); | |
210 | ||
211 | bfd_put_32(abfd, value, (bfd_byte *)data+reloc_entry->address); | |
212 | return bfd_reloc_ok; | |
213 | } | |
214 | ||
215 | static bfd_reloc_status_enum_type | |
216 | DEFUN(hlo10,(abfd, reloc_entry, symbol_in, data, input_section), | |
217 | bfd *abfd AND | |
218 | arelent *reloc_entry AND | |
219 | asymbol *symbol_in AND | |
220 | unsigned char *data AND | |
221 | asection *input_section) | |
222 | { | |
223 | bfd_vma sym_value = get_symbol_value(symbol_in, input_section); | |
224 | ||
225 | bfd_vma value = bfd_get_32(abfd, (bfd_byte *)data + reloc_entry->address); | |
226 | ||
227 | value = (value & ~0x3ff) | (((sym_value + reloc_entry->addend) >> 32) & 0x3ff); | |
228 | ||
229 | bfd_put_32(abfd, value, (bfd_byte *)data+reloc_entry->address); | |
230 | return bfd_reloc_ok; | |
231 | } | |
232 | ||
7d003262 SG |
233 | static bfd_reloc_status_enum_type |
234 | r64() | |
67c060c3 SC |
235 | { |
236 | abort(); | |
237 | } | |
238 | ||
239 | /* end-sanitize-v9 */ | |
240 | ||
7ed4093a SC |
241 | static reloc_howto_type howto_table_ext[] = |
242 | { | |
243 | HOWTO(RELOC_8, 0, 0, 8, false, 0, true, true,0,"8", false, 0,0x000000ff, false), | |
244 | HOWTO(RELOC_16, 0, 1, 16, false, 0, true, true,0,"16", false, 0,0x0000ffff, false), | |
245 | HOWTO(RELOC_32, 0, 2, 32, false, 0, true, true,0,"32", false, 0,0xffffffff, false), | |
246 | HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, false, true,0,"DISP8", false, 0,0x000000ff, false), | |
247 | HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, false, true,0,"DISP16", false, 0,0x0000ffff, false), | |
248 | HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, false, true,0,"DISP32", false, 0,0xffffffff, false), | |
249 | HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, false, true,0,"WDISP30", false, 0,0x3fffffff, false), | |
250 | HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, false, true,0,"WDISP22", false, 0,0x003fffff, false), | |
251 | HOWTO(RELOC_HI22, 10, 2, 22, false, 0, false, true,0,"HI22", false, 0,0x003fffff, false), | |
252 | HOWTO(RELOC_22, 0, 2, 22, false, 0, false, true,0,"22", false, 0,0x003fffff, false), | |
253 | HOWTO(RELOC_13, 0, 2, 13, false, 0, false, true,0,"13", false, 0,0x00001fff, false), | |
254 | HOWTO(RELOC_LO10, 0, 2, 10, false, 0, false, true,0,"LO10", false, 0,0x000003ff, false), | |
255 | HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, false, true,0,"SFA_BASE", false, 0,0xffffffff, false), | |
256 | HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, false, true,0,"SFA_OFF13",false, 0,0xffffffff, false), | |
257 | HOWTO(RELOC_BASE10, 0, 2, 16, false, 0, false, true,0,"BASE10", false, 0,0x0000ffff, false), | |
258 | HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, false, true,0,"BASE13", false, 0,0x00001fff, false), | |
259 | HOWTO(RELOC_BASE22, 0, 2, 0, false, 0, false, true,0,"BASE22", false, 0,0x00000000, false), | |
260 | HOWTO(RELOC_PC10, 0, 2, 10, false, 0, false, true,0,"PC10", false, 0,0x000003ff, false), | |
261 | HOWTO(RELOC_PC22, 0, 2, 22, false, 0, false, true,0,"PC22", false, 0,0x003fffff, false), | |
262 | HOWTO(RELOC_JMP_TBL,0, 2, 32, false, 0, false, true,0,"JMP_TBL", false, 0,0xffffffff, false), | |
263 | HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, false, true,0,"SEGOFF16", false, 0,0x00000000, false), | |
264 | HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, false, true,0,"GLOB_DAT", false, 0,0x00000000, false), | |
265 | HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, false, true,0,"JMP_SLOT", false, 0,0x00000000, false), | |
67c060c3 SC |
266 | HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, false, true,0,"RELATIVE", false, 0,0x00000000, false), |
267 | ||
268 | /* start-sanitize-v9 */ | |
c618de01 | 269 | |
67c060c3 SC |
270 | HOWTO(RELOC_11, 0, 2, 21, true, 0, false, true,r64,"11", false, 0,/*0x00000000001fffff*/0, false), |
271 | HOWTO(RELOC_WDISP2_14, 0, 2, 21, true, 0, false, true,r64,"DISP2_14",false, 0,/*0x00000000001fffff*/0, false), | |
272 | HOWTO(RELOC_WDISP19, 0, 3, 64, true, 0, false, true,r64,"DISP19", false, 0,/*0xffffffffffffffff*/0, false), | |
273 | HOWTO(RELOC_HHI22, 42, 3, 22, false, 0, false, true,hhi22,"HHI22",false, 0,/*0x003fffff00000000*/0, false), | |
274 | HOWTO(RELOC_HLO10, 32, 3, 10, false, 0, false, true,hlo10,"HLO10", false, 0,/*0x000003ff00000000*/0, false), | |
c618de01 | 275 | |
7ed4093a SC |
276 | HOWTO(RELOC_JUMPTARG,2, 13, 16, true, 0, false, true,0,"JUMPTARG", false, 0,0x0000ffff, false), |
277 | HOWTO(RELOC_CONST, 0, 13, 16, false, 0, false, true,0,"CONST", false, 0,0x0000ffff, false), | |
278 | HOWTO(RELOC_CONSTH, 16, 13, 16, false, 0, false, true,0,"CONSTH", false, 0,0x0000ffff, false), | |
67c060c3 | 279 | |
c618de01 | 280 | |
67c060c3 SC |
281 | HOWTO(RELOC_64, 0, 3, 64, false, 0, true, true,reloc64,"64", false, 0,/*0xffffffffffffffff*/0, false), |
282 | HOWTO(RELOC_DISP64, 0, 3, 64, true, 0, false, true,disp64,"DISP64", false, 0,/*0xffffffffffffffff*/0, false), | |
283 | HOWTO(RELOC_WDISP21,2, 2, 21, true, 0, false, true,r64,"WDISP21",false, 0,/*0x00000000001fffff*/0, false), | |
284 | HOWTO(RELOC_DISP21, 0, 2, 21, true, 0, false, true,r64,"DISP21", false, 0,/*0x00000000001fffff*/0, false), | |
285 | HOWTO(RELOC_DISP14, 0, 2, 14, true, 0, false, true,r64,"DISP21", false, 0,/*0x0000000000003fff*/0, false), | |
c618de01 | 286 | |
67c060c3 | 287 | /* end-sanitize-v9 */ |
7ed4093a SC |
288 | }; |
289 | ||
290 | /* Convert standard reloc records to "arelent" format (incl byte swap). */ | |
291 | ||
292 | static reloc_howto_type howto_table_std[] = { | |
293 | /* type rs size bsz pcrel bitpos abs ovrf sf name part_inpl readmask setmask pcdone */ | |
294 | HOWTO( 0, 0, 0, 8, false, 0, true, true,0,"8", true, 0x000000ff,0x000000ff, false), | |
295 | HOWTO( 1, 0, 1, 16, false, 0, true, true,0,"16", true, 0x0000ffff,0x0000ffff, false), | |
296 | HOWTO( 2, 0, 2, 32, false, 0, true, true,0,"32", true, 0xffffffff,0xffffffff, false), | |
297 | HOWTO( 3, 0, 3, 64, false, 0, true, true,0,"64", true, 0xdeaddead,0xdeaddead, false), | |
298 | HOWTO( 4, 0, 0, 8, true, 0, false, true,0,"DISP8", true, 0x000000ff,0x000000ff, false), | |
299 | HOWTO( 5, 0, 1, 16, true, 0, false, true,0,"DISP16", true, 0x0000ffff,0x0000ffff, false), | |
300 | HOWTO( 6, 0, 2, 32, true, 0, false, true,0,"DISP32", true, 0xffffffff,0xffffffff, false), | |
301 | HOWTO( 7, 0, 3, 64, true, 0, false, true,0,"DISP64", true, 0xfeedface,0xfeedface, false), | |
302 | }; | |
303 | ||
304 | ||
305 | bfd_error_vector_type bfd_error_vector; | |
6f715d66 SC |
306 | |
307 | /*doc* | |
308 | @subsection Internal Entry Points | |
309 | @code{aoutx.h} exports several routines for accessing the contents of | |
310 | an a.out file, which are gathered and exported in turn by various | |
311 | format specific files (eg sunos.c). | |
312 | */ | |
313 | ||
314 | /*doc* | |
315 | *i aout_<size>_swap_exec_header_in | |
316 | Swaps the information in an executable header taken from a raw byte stream memory image, | |
317 | into the internal exec_header structure. | |
318 | *; PROTO(void, aout_<size>_swap_exec_header_in, | |
319 | (bfd *abfd, | |
320 | struct external_exec *raw_bytes, | |
321 | struct internal_exec *execp)); | |
322 | */ | |
323 | ||
7ed4093a SC |
324 | void |
325 | DEFUN(NAME(aout,swap_exec_header_in),(abfd, raw_bytes, execp), | |
326 | bfd *abfd AND | |
327 | struct external_exec *raw_bytes AND | |
328 | struct internal_exec *execp) | |
329 | { | |
330 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
331 | ||
332 | /* Now fill in fields in the execp, from the bytes in the raw data. */ | |
333 | execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); | |
334 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
335 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
336 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
337 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
338 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
339 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); | |
340 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
341 | } | |
342 | ||
6f715d66 SC |
343 | /*doc* |
344 | *i aout_<size>_swap_exec_header_out | |
345 | Swaps the information in an internal exec header structure into the | |
346 | supplied buffer ready for writing to disk. | |
347 | *; PROTO(void, aout_<size>_swap_exec_header_out, | |
348 | (bfd *abfd, | |
349 | struct internal_exec *execp, | |
350 | struct external_exec *raw_bytes)); | |
351 | */ | |
7ed4093a SC |
352 | void |
353 | DEFUN(NAME(aout,swap_exec_header_out),(abfd, execp, raw_bytes), | |
354 | bfd *abfd AND | |
355 | struct internal_exec *execp AND | |
356 | struct external_exec *raw_bytes) | |
357 | { | |
358 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
359 | ||
360 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ | |
361 | bfd_h_put_32 (abfd, execp->a_info , bytes->e_info); | |
362 | PUT_WORD (abfd, execp->a_text , bytes->e_text); | |
363 | PUT_WORD (abfd, execp->a_data , bytes->e_data); | |
364 | PUT_WORD (abfd, execp->a_bss , bytes->e_bss); | |
365 | PUT_WORD (abfd, execp->a_syms , bytes->e_syms); | |
366 | PUT_WORD (abfd, execp->a_entry , bytes->e_entry); | |
367 | PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); | |
368 | PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); | |
369 | } | |
370 | ||
371 | struct container { | |
372 | struct aoutdata a; | |
373 | struct internal_exec e; | |
374 | }; | |
375 | ||
6f715d66 SC |
376 | |
377 | /*doc* | |
378 | *i aout_<size>_some_aout_object_p | |
379 | ||
380 | Some A.OUT variant thinks that the file whose format we're checking | |
381 | is an a.out file. Do some more checking, and set up for access if | |
382 | it really is. Call back to the calling environments "finish up" | |
383 | function just before returning, to handle any last-minute setup. | |
384 | ||
385 | *; PROTO(bfd_target *, aout_<size>_some_aout_object_p, | |
386 | (bfd *abfd, | |
387 | bfd_target *(*callback_to_real_object_p)())); | |
388 | */ | |
7ed4093a SC |
389 | |
390 | bfd_target * | |
391 | DEFUN(NAME(aout,some_aout_object_p),(abfd, callback_to_real_object_p), | |
392 | bfd *abfd AND | |
393 | bfd_target *(*callback_to_real_object_p) ()) | |
394 | { | |
395 | struct external_exec exec_bytes; | |
396 | struct internal_exec *execp; | |
397 | struct container *rawptr; | |
398 | ||
399 | if (bfd_seek (abfd, 0L, false) < 0) { | |
400 | bfd_error = system_call_error; | |
401 | return 0; | |
402 | } | |
403 | ||
404 | if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd) | |
405 | != EXEC_BYTES_SIZE) { | |
406 | bfd_error = wrong_format; | |
407 | return 0; | |
408 | } | |
409 | ||
410 | /* Use an intermediate variable for clarity */ | |
411 | rawptr = (struct container *) bfd_zalloc (abfd, sizeof (struct container)); | |
412 | ||
413 | if (rawptr == NULL) { | |
414 | bfd_error = no_memory; | |
415 | return 0; | |
416 | } | |
417 | ||
418 | set_tdata (abfd, rawptr); | |
419 | exec_hdr (abfd) = execp = &(rawptr->e); | |
420 | NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, execp); | |
421 | ||
422 | /* Set the file flags */ | |
423 | abfd->flags = NO_FLAGS; | |
424 | if (execp->a_drsize || execp->a_trsize) | |
425 | abfd->flags |= HAS_RELOC; | |
426 | if (execp->a_entry) | |
427 | abfd->flags |= EXEC_P; | |
428 | if (execp->a_syms) | |
429 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
430 | ||
431 | if (N_MAGIC (*execp) == ZMAGIC) abfd->flags |= D_PAGED; | |
432 | if (N_MAGIC (*execp) == NMAGIC) abfd->flags |= WP_TEXT; | |
433 | ||
434 | bfd_get_start_address (abfd) = execp->a_entry; | |
435 | ||
436 | obj_aout_symbols (abfd) = (aout_symbol_type *)NULL; | |
437 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); | |
438 | ||
439 | /* Set the default architecture and machine type. These can be | |
440 | overridden in the callback routine. */ | |
441 | abfd->obj_arch = bfd_arch_unknown; | |
442 | abfd->obj_machine = 0; | |
443 | ||
444 | /* The default relocation entry size is that of traditional V7 Unix. */ | |
445 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
446 | ||
447 | /* create the sections. This is raunchy, but bfd_close wants to reclaim | |
448 | them */ | |
449 | obj_textsec (abfd) = (asection *)NULL; | |
450 | obj_datasec (abfd) = (asection *)NULL; | |
451 | obj_bsssec (abfd) = (asection *)NULL; | |
452 | (void)bfd_make_section(abfd, ".text"); | |
453 | (void)bfd_make_section(abfd, ".data"); | |
454 | (void)bfd_make_section(abfd, ".bss"); | |
455 | ||
456 | abfd->sections = obj_textsec (abfd); | |
457 | obj_textsec (abfd)->next = obj_datasec (abfd); | |
458 | obj_datasec (abfd)->next = obj_bsssec (abfd); | |
459 | ||
460 | obj_datasec (abfd)->size = execp->a_data; | |
461 | obj_bsssec (abfd)->size = execp->a_bss; | |
462 | obj_textsec (abfd)->size = execp->a_text; | |
463 | ||
464 | if (abfd->flags & D_PAGED) { | |
465 | obj_textsec (abfd)->size -= EXEC_BYTES_SIZE; | |
466 | } | |
467 | ||
468 | ||
469 | obj_textsec (abfd)->flags = (execp->a_trsize != 0 ? | |
470 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_HAS_CONTENTS) : | |
471 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)); | |
472 | obj_datasec (abfd)->flags = (execp->a_drsize != 0 ? | |
473 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_HAS_CONTENTS) : | |
474 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS)); | |
475 | obj_bsssec (abfd)->flags = SEC_ALLOC; | |
476 | ||
477 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
478 | /* Call back to the format-dependent code to fill in the rest of the | |
479 | fields and do any further cleanup. Things that should be filled | |
480 | in by the callback: */ | |
481 | ||
482 | struct exec *execp = exec_hdr (abfd); | |
483 | ||
484 | /* The virtual memory addresses of the sections */ | |
485 | obj_datasec (abfd)->vma = N_DATADDR(*execp); | |
486 | obj_bsssec (abfd)->vma = N_BSSADDR(*execp); | |
487 | obj_textsec (abfd)->vma = N_TXTADDR(*execp); | |
488 | ||
489 | /* The file offsets of the sections */ | |
490 | obj_textsec (abfd)->filepos = N_TXTOFF(*execp); | |
491 | obj_datasec (abfd)->filepos = N_DATOFF(*execp); | |
492 | ||
493 | /* The file offsets of the relocation info */ | |
494 | obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); | |
495 | obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); | |
496 | ||
497 | /* The file offsets of the string table and symbol table. */ | |
498 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
499 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
500 | ||
501 | /* This common code can't fill in those things because they depend | |
502 | on either the start address of the text segment, the rounding | |
503 | up of virtual addersses between segments, or the starting file | |
504 | position of the text segment -- all of which varies among different | |
505 | versions of a.out. */ | |
506 | ||
507 | /* Determine the architecture and machine type of the object file. */ | |
508 | switch (N_MACHTYPE (*exec_hdr (abfd))) { | |
509 | default: | |
510 | abfd->obj_arch = bfd_arch_obscure; | |
511 | break; | |
512 | } | |
513 | ||
514 | /* Determine the size of a relocation entry */ | |
515 | switch (abfd->obj_arch) { | |
516 | case bfd_arch_sparc: | |
517 | case bfd_arch_a29k: | |
518 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; | |
519 | default: | |
520 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
521 | } | |
522 | ||
523 | return abfd->xvec; | |
524 | ||
525 | /* The architecture is encoded in various ways in various a.out variants, | |
526 | or is not encoded at all in some of them. The relocation size depends | |
527 | on the architecture and the a.out variant. Finally, the return value | |
528 | is the bfd_target vector in use. If an error occurs, return zero and | |
529 | set bfd_error to the appropriate error code. | |
530 | ||
531 | Formats such as b.out, which have additional fields in the a.out | |
532 | header, should cope with them in this callback as well. */ | |
533 | #endif /* DOCUMENTATION */ | |
534 | ||
535 | ||
536 | return (*callback_to_real_object_p)(abfd); | |
537 | } | |
538 | ||
6f715d66 SC |
539 | /*doc* |
540 | *i aout_<size>_mkobject | |
541 | ||
6724ff46 | 542 | This routine initializes a BFD for use with a.out files. |
6f715d66 SC |
543 | |
544 | *; PROTO(boolean, aout_<size>_mkobject, (bfd *)); | |
545 | */ | |
7ed4093a SC |
546 | |
547 | boolean | |
548 | DEFUN(NAME(aout,mkobject),(abfd), | |
549 | bfd *abfd) | |
550 | { | |
551 | struct container *rawptr; | |
552 | ||
553 | bfd_error = system_call_error; | |
554 | ||
555 | /* Use an intermediate variable for clarity */ | |
556 | rawptr = (struct container *)bfd_zalloc (abfd, sizeof (struct container)); | |
557 | ||
558 | if (rawptr == NULL) { | |
559 | bfd_error = no_memory; | |
560 | return false; | |
561 | } | |
562 | ||
563 | set_tdata (abfd, rawptr); | |
564 | exec_hdr (abfd) = &(rawptr->e); | |
565 | ||
566 | /* For simplicity's sake we just make all the sections right here. */ | |
567 | ||
568 | obj_textsec (abfd) = (asection *)NULL; | |
569 | obj_datasec (abfd) = (asection *)NULL; | |
570 | obj_bsssec (abfd) = (asection *)NULL; | |
571 | bfd_make_section (abfd, ".text"); | |
572 | bfd_make_section (abfd, ".data"); | |
573 | bfd_make_section (abfd, ".bss"); | |
574 | ||
575 | return true; | |
576 | } | |
577 | ||
6f715d66 SC |
578 | |
579 | /*doc* | |
580 | *i aout_<size>_machine_type | |
581 | ||
582 | Keep track of machine architecture and machine type for a.out's. | |
7ed4093a SC |
583 | Return the machine_type for a particular arch&machine, or M_UNKNOWN |
584 | if that exact arch&machine can't be represented in a.out format. | |
585 | ||
586 | If the architecture is understood, machine type 0 (default) should | |
6f715d66 SC |
587 | always be understood. |
588 | ||
589 | *; PROTO(enum machine_type, aout_<size>_machine_type, | |
590 | (enum bfd_architecture arch, | |
591 | unsigned long machine)); | |
592 | */ | |
7ed4093a SC |
593 | |
594 | enum machine_type | |
595 | DEFUN(NAME(aout,machine_type),(arch, machine), | |
596 | enum bfd_architecture arch AND | |
597 | unsigned long machine) | |
598 | { | |
599 | enum machine_type arch_flags; | |
600 | ||
601 | arch_flags = M_UNKNOWN; | |
602 | ||
603 | switch (arch) { | |
604 | case bfd_arch_sparc: | |
605 | if (machine == 0) arch_flags = M_SPARC; | |
606 | break; | |
607 | ||
608 | case bfd_arch_m68k: | |
609 | switch (machine) { | |
610 | case 0: arch_flags = M_68010; break; | |
611 | case 68000: arch_flags = M_UNKNOWN; break; | |
612 | case 68010: arch_flags = M_68010; break; | |
613 | case 68020: arch_flags = M_68020; break; | |
614 | default: arch_flags = M_UNKNOWN; break; | |
615 | } | |
616 | break; | |
617 | ||
618 | case bfd_arch_i386: | |
619 | if (machine == 0) arch_flags = M_386; | |
620 | break; | |
621 | ||
622 | case bfd_arch_a29k: | |
623 | if (machine == 0) arch_flags = M_29K; | |
624 | break; | |
625 | ||
626 | default: | |
627 | arch_flags = M_UNKNOWN; | |
628 | break; | |
629 | } | |
630 | return arch_flags; | |
631 | } | |
632 | ||
6f715d66 SC |
633 | /*doc* |
634 | *i aout_<size>_set_arch_mach | |
635 | ||
6724ff46 | 636 | Sets the architecture and the machine of the BFD to those values |
6f715d66 SC |
637 | supplied. Verifies that the format can support the architecture |
638 | required. | |
639 | ||
640 | *; PROTO(boolean, aout_<size>_set_arch_mach, | |
641 | (bfd *, | |
642 | enum bfd_architecture, | |
643 | unsigned long machine)); | |
644 | */ | |
645 | ||
7ed4093a SC |
646 | boolean |
647 | DEFUN(NAME(aout,set_arch_mach),(abfd, arch, machine), | |
648 | bfd *abfd AND | |
649 | enum bfd_architecture arch AND | |
650 | unsigned long machine) | |
651 | { | |
652 | abfd->obj_arch = arch; | |
653 | abfd->obj_machine = machine; | |
654 | if (arch != bfd_arch_unknown && | |
655 | NAME(aout,machine_type) (arch, machine) == M_UNKNOWN) | |
656 | return false; /* We can't represent this type */ | |
657 | return true; /* We're easy ... */ | |
658 | } | |
7ed4093a | 659 | |
6f715d66 SC |
660 | /*doc* |
661 | *i aout_<size>new_section_hook | |
662 | ||
6724ff46 | 663 | Called by the BFD in response to a @code{bfd_make_section} request. |
6f715d66 SC |
664 | *; PROTO(boolean, aout_<size>_new_section_hook, |
665 | (bfd *abfd, | |
666 | asection *newsect)); | |
667 | */ | |
7ed4093a SC |
668 | boolean |
669 | DEFUN(NAME(aout,new_section_hook),(abfd, newsect), | |
670 | bfd *abfd AND | |
671 | asection *newsect) | |
672 | { | |
673 | /* align to double at least */ | |
674 | newsect->alignment_power = 3; | |
675 | ||
676 | if (bfd_get_format (abfd) == bfd_object) { | |
677 | if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) { | |
678 | obj_textsec(abfd)= newsect; | |
679 | return true; | |
680 | } | |
681 | ||
682 | if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) { | |
683 | obj_datasec(abfd) = newsect; | |
684 | return true; | |
685 | } | |
686 | ||
687 | if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) { | |
688 | obj_bsssec(abfd) = newsect; | |
689 | return true; | |
690 | } | |
691 | } | |
692 | ||
693 | /* We allow more than three sections internally */ | |
694 | return true; | |
695 | } | |
696 | ||
697 | boolean | |
698 | DEFUN(NAME(aout,set_section_contents),(abfd, section, location, offset, count), | |
699 | bfd *abfd AND | |
700 | sec_ptr section AND | |
701 | PTR location AND | |
702 | file_ptr offset AND | |
703 | bfd_size_type count) | |
704 | { | |
705 | if (abfd->output_has_begun == false) | |
12e7087f JG |
706 | { /* set by bfd.c handler */ |
707 | switch (abfd->direction) | |
708 | { | |
709 | case read_direction: | |
710 | case no_direction: | |
711 | bfd_error = invalid_operation; | |
712 | return false; | |
713 | ||
714 | case both_direction: | |
715 | break; | |
716 | ||
717 | case write_direction: | |
718 | if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL)) | |
719 | { | |
720 | bfd_error = invalid_operation; | |
721 | return false; | |
722 | } | |
723 | /*if (abfd->flags & D_PAGED) { | |
724 | obj_textsec(abfd)->filepos = 0; | |
7ed4093a | 725 | } |
12e7087f JG |
726 | else*/ { |
727 | obj_textsec(abfd)->filepos = EXEC_BYTES_SIZE; | |
728 | } | |
729 | obj_textsec(abfd)->size = align_power(obj_textsec(abfd)->size, | |
730 | obj_textsec(abfd)->alignment_power); | |
731 | obj_datasec(abfd)->filepos = obj_textsec (abfd)->size + EXEC_BYTES_SIZE; | |
732 | obj_datasec(abfd)->size = align_power(obj_datasec(abfd)->size, | |
733 | obj_datasec(abfd)->alignment_power); | |
7ed4093a | 734 | } |
12e7087f JG |
735 | } |
736 | ||
7ed4093a SC |
737 | /* regardless, once we know what we're doing, we might as well get going */ |
738 | if (section != obj_bsssec(abfd)) | |
739 | { | |
740 | bfd_seek (abfd, section->filepos + offset, SEEK_SET); | |
741 | ||
742 | if (count) { | |
743 | return (bfd_write ((PTR)location, 1, count, abfd) == count) ? | |
744 | true : false; | |
745 | } | |
746 | return false; | |
747 | } | |
748 | return true; | |
749 | } | |
750 | \f | |
751 | /* Classify stabs symbols */ | |
752 | ||
753 | #define sym_in_text_section(sym) \ | |
754 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_TEXT) | |
755 | ||
756 | #define sym_in_data_section(sym) \ | |
757 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_DATA) | |
758 | ||
759 | #define sym_in_bss_section(sym) \ | |
760 | (((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_BSS) | |
761 | ||
762 | /* Symbol is undefined if type is N_UNDF|N_EXT and if it has | |
763 | zero in the "value" field. Nonzeroes there are fortrancommon | |
764 | symbols. */ | |
765 | #define sym_is_undefined(sym) \ | |
766 | ((sym)->type == (N_UNDF | N_EXT) && (sym)->symbol.value == 0) | |
767 | ||
768 | /* Symbol is a global definition if N_EXT is on and if it has | |
769 | a nonzero type field. */ | |
770 | #define sym_is_global_defn(sym) \ | |
771 | (((sym)->type & N_EXT) && (sym)->type & N_TYPE) | |
772 | ||
773 | /* Symbol is debugger info if any bits outside N_TYPE or N_EXT | |
774 | are on. */ | |
775 | #define sym_is_debugger_info(sym) \ | |
776 | ((sym)->type & ~(N_EXT | N_TYPE)) | |
777 | ||
778 | #define sym_is_fortrancommon(sym) \ | |
779 | (((sym)->type == (N_EXT)) && (sym)->symbol.value != 0) | |
780 | ||
781 | /* Symbol is absolute if it has N_ABS set */ | |
782 | #define sym_is_absolute(sym) \ | |
783 | (((sym)->type & N_TYPE)== N_ABS) | |
784 | ||
785 | ||
786 | #define sym_is_indirect(sym) \ | |
787 | (((sym)->type & N_ABS)== N_ABS) | |
788 | ||
789 | /* Only in their own functions for ease of debugging; when sym flags have | |
790 | stabilised these should be inlined into their (single) caller */ | |
791 | ||
792 | static void | |
793 | DEFUN(translate_from_native_sym_flags,(sym_pointer, cache_ptr, abfd), | |
794 | struct external_nlist *sym_pointer AND | |
795 | aout_symbol_type *cache_ptr AND | |
796 | bfd *abfd) | |
c618de01 SC |
797 | { |
798 | switch (cache_ptr->type & N_TYPE) { | |
799 | case N_SETA: | |
800 | case N_SETT: | |
801 | case N_SETD: | |
802 | case N_SETB: | |
803 | { | |
804 | char *copy = bfd_alloc(abfd, strlen(cache_ptr->symbol.name)+1); | |
805 | asection *section ; | |
806 | arelent_chain *reloc = (arelent_chain *)bfd_alloc(abfd, sizeof(arelent_chain)); | |
807 | strcpy(copy, cache_ptr->symbol.name); | |
808 | section = bfd_make_section(abfd,copy); | |
809 | switch ( (cache_ptr->type & N_TYPE) ) { | |
810 | case N_SETA: | |
811 | section->flags = SEC_CONSTRUCTOR; | |
812 | reloc->relent.section = (asection *)NULL; | |
813 | cache_ptr->symbol.section = (asection *)NULL; | |
814 | break; | |
815 | case N_SETT: | |
816 | section->flags = SEC_CONSTRUCTOR_TEXT; | |
817 | reloc->relent.section = (asection *)obj_textsec(abfd); | |
818 | cache_ptr->symbol.value -= reloc->relent.section->vma; | |
819 | break; | |
820 | case N_SETD: | |
821 | section->flags = SEC_CONSTRUCTOR_DATA; | |
822 | reloc->relent.section = (asection *)obj_datasec(abfd); | |
823 | cache_ptr->symbol.value -= reloc->relent.section->vma; | |
824 | break; | |
825 | case N_SETB: | |
826 | section->flags = SEC_CONSTRUCTOR_BSS; | |
827 | reloc->relent.section = (asection *)obj_bsssec(abfd); | |
828 | cache_ptr->symbol.value -= reloc->relent.section->vma; | |
829 | break; | |
830 | } | |
831 | cache_ptr->symbol.section = reloc->relent.section; | |
832 | reloc->relent.addend = cache_ptr->symbol.value ; | |
7ed4093a | 833 | |
c618de01 SC |
834 | /* We modify the symbol to belong to a section depending upon the |
835 | name of the symbol - probably __CTOR__ or __DTOR__ but we don't | |
836 | really care, and add to the size of the section to contain a | |
837 | pointer to the symbol. Build a reloc entry to relocate to this | |
838 | symbol attached to this section. */ | |
839 | ||
840 | ||
841 | section->reloc_count++; | |
842 | section->alignment_power = 2; | |
843 | reloc->relent.sym_ptr_ptr = (asymbol **)NULL; | |
844 | reloc->next = section->constructor_chain; | |
845 | section->constructor_chain = reloc; | |
846 | reloc->relent.address = section->size; | |
847 | section->size += sizeof(int *); | |
848 | ||
849 | reloc->relent.howto = howto_table_ext +CTOR_TABLE_RELOC_IDX; | |
850 | cache_ptr->symbol.flags |= BSF_DEBUGGING | BSF_CONSTRUCTOR; | |
851 | } | |
852 | break; | |
7ed4093a | 853 | default: |
88dfcd68 SC |
854 | if (cache_ptr->type == N_WARNING) |
855 | { | |
856 | /* This symbol is the text of a warning message, the next symbol | |
857 | is the symbol to associate the warning with */ | |
858 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
859 | cache_ptr->symbol.value = (bfd_vma)((cache_ptr+1)); | |
860 | /* We furgle with the next symbol in place. We don't want it to be undefined, we'll trample the type */ | |
861 | (sym_pointer+1)->e_type[0] = 0xff; | |
862 | break; | |
863 | } | |
c618de01 | 864 | if ((cache_ptr->type | N_EXT) == (N_INDR | N_EXT)) { |
88dfcd68 SC |
865 | /* Two symbols in a row for an INDR message. The first symbol |
866 | contains the name we will match, the second symbol contains the | |
867 | name the first name is translated into. It is supplied to us | |
868 | undefined. This is good, since we want to pull in any files which | |
869 | define it */ | |
870 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT; | |
871 | cache_ptr->symbol.value = (bfd_vma)((cache_ptr+1)); | |
872 | break; | |
873 | } | |
874 | ||
875 | ||
7ed4093a SC |
876 | if (sym_is_debugger_info (cache_ptr)) { |
877 | cache_ptr->symbol.flags = BSF_DEBUGGING ; | |
878 | /* Work out the section correct for this symbol */ | |
879 | switch (cache_ptr->type & N_TYPE) | |
880 | { | |
881 | case N_TEXT: | |
882 | case N_FN: | |
883 | cache_ptr->symbol.section = obj_textsec (abfd); | |
884 | cache_ptr->symbol.value -= obj_textsec(abfd)->vma; | |
885 | break; | |
886 | case N_DATA: | |
887 | cache_ptr->symbol.value -= obj_datasec(abfd)->vma; | |
888 | cache_ptr->symbol.section = obj_datasec (abfd); | |
889 | break; | |
890 | case N_BSS : | |
891 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
892 | cache_ptr->symbol.value -= obj_bsssec(abfd)->vma; | |
893 | break; | |
894 | case N_ABS: | |
895 | default: | |
896 | cache_ptr->symbol.section = 0; | |
897 | break; | |
898 | } | |
899 | } | |
900 | else { | |
88dfcd68 | 901 | |
7ed4093a SC |
902 | if (sym_is_fortrancommon (cache_ptr)) |
903 | { | |
904 | cache_ptr->symbol.flags = BSF_FORT_COMM; | |
905 | cache_ptr->symbol.section = (asection *)NULL; | |
906 | } | |
907 | else { | |
908 | if (sym_is_undefined (cache_ptr)) { | |
909 | cache_ptr->symbol.flags = BSF_UNDEFINED; | |
910 | } | |
911 | else if (sym_is_global_defn (cache_ptr)) { | |
912 | cache_ptr->symbol.flags = BSF_GLOBAL | BSF_EXPORT; | |
913 | } | |
88dfcd68 | 914 | |
7ed4093a SC |
915 | else if (sym_is_absolute (cache_ptr)) { |
916 | cache_ptr->symbol.flags = BSF_ABSOLUTE; | |
917 | } | |
918 | else { | |
919 | cache_ptr->symbol.flags = BSF_LOCAL; | |
920 | } | |
88dfcd68 | 921 | |
7ed4093a SC |
922 | /* In a.out, the value of a symbol is always relative to the |
923 | * start of the file, if this is a data symbol we'll subtract | |
924 | * the size of the text section to get the section relative | |
925 | * value. If this is a bss symbol (which would be strange) | |
926 | * we'll subtract the size of the previous two sections | |
927 | * to find the section relative address. | |
928 | */ | |
88dfcd68 | 929 | |
7ed4093a SC |
930 | if (sym_in_text_section (cache_ptr)) { |
931 | cache_ptr->symbol.value -= obj_textsec(abfd)->vma; | |
932 | cache_ptr->symbol.section = obj_textsec (abfd); | |
933 | } | |
934 | else if (sym_in_data_section (cache_ptr)){ | |
935 | cache_ptr->symbol.value -= obj_datasec(abfd)->vma; | |
936 | cache_ptr->symbol.section = obj_datasec (abfd); | |
937 | } | |
938 | else if (sym_in_bss_section(cache_ptr)) { | |
939 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
940 | cache_ptr->symbol.value -= obj_bsssec(abfd)->vma; | |
941 | } | |
942 | else { | |
943 | cache_ptr->symbol.section = (asection *)NULL; | |
944 | cache_ptr->symbol.flags |= BSF_ABSOLUTE; | |
945 | } | |
946 | } | |
947 | } | |
948 | } | |
949 | } | |
950 | ||
951 | static void | |
952 | DEFUN(translate_to_native_sym_flags,(sym_pointer, cache_ptr, abfd), | |
953 | struct external_nlist *sym_pointer AND | |
954 | asymbol *cache_ptr AND | |
955 | bfd *abfd) | |
956 | { | |
957 | bfd_vma value = cache_ptr->value; | |
958 | ||
959 | if (bfd_get_section(cache_ptr)) { | |
960 | if (bfd_get_output_section(cache_ptr) == obj_bsssec (abfd)) { | |
961 | sym_pointer->e_type[0] |= N_BSS; | |
962 | } | |
963 | else if (bfd_get_output_section(cache_ptr) == obj_datasec (abfd)) { | |
964 | sym_pointer->e_type[0] |= N_DATA; | |
965 | } | |
966 | else if (bfd_get_output_section(cache_ptr) == obj_textsec (abfd)) { | |
967 | sym_pointer->e_type[0] |= N_TEXT; | |
968 | } | |
969 | else { | |
970 | bfd_error_vector.nonrepresentable_section(abfd, | |
971 | bfd_get_output_section(cache_ptr)->name); | |
972 | } | |
973 | /* Turn the symbol from section relative to absolute again */ | |
974 | ||
975 | value += | |
976 | cache_ptr->section->output_section->vma | |
977 | + cache_ptr->section->output_offset ; | |
978 | } | |
979 | else { | |
980 | sym_pointer->e_type[0] |= N_ABS; | |
981 | } | |
88dfcd68 SC |
982 | if (cache_ptr->flags & (BSF_WARNING)) { |
983 | (sym_pointer+1)->e_type[0] = 1; | |
984 | } | |
7ed4093a SC |
985 | if (cache_ptr->flags & (BSF_FORT_COMM | BSF_UNDEFINED)) { |
986 | sym_pointer->e_type[0] = (N_UNDF | N_EXT); | |
987 | } | |
988 | else { | |
989 | if (cache_ptr->flags & BSF_ABSOLUTE) { | |
990 | sym_pointer->e_type[0] |= N_ABS; | |
991 | } | |
992 | ||
993 | if (cache_ptr->flags & (BSF_GLOBAL | BSF_EXPORT)) { | |
994 | sym_pointer->e_type[0] |= N_EXT; | |
995 | } | |
996 | if (cache_ptr->flags & BSF_DEBUGGING) { | |
997 | sym_pointer->e_type [0]= ((aout_symbol_type *)cache_ptr)->type; | |
998 | } | |
999 | } | |
1000 | PUT_WORD(abfd, value, sym_pointer->e_value); | |
1001 | } | |
1002 | \f | |
1003 | /* Native-level interface to symbols. */ | |
1004 | ||
1005 | /* We read the symbols into a buffer, which is discarded when this | |
1006 | function exits. We read the strings into a buffer large enough to | |
1007 | hold them all plus all the cached symbol entries. */ | |
1008 | ||
1009 | asymbol * | |
1010 | DEFUN(NAME(aout,make_empty_symbol),(abfd), | |
1011 | bfd *abfd) | |
1012 | { | |
1013 | aout_symbol_type *new = | |
1014 | (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type)); | |
1015 | new->symbol.the_bfd = abfd; | |
1016 | ||
1017 | return &new->symbol; | |
1018 | } | |
1019 | ||
1020 | boolean | |
1021 | DEFUN(NAME(aout,slurp_symbol_table),(abfd), | |
1022 | bfd *abfd) | |
1023 | { | |
1024 | bfd_size_type symbol_size; | |
1025 | bfd_size_type string_size; | |
1026 | unsigned char string_chars[BYTES_IN_WORD]; | |
1027 | struct external_nlist *syms; | |
1028 | char *strings; | |
1029 | aout_symbol_type *cached; | |
1030 | ||
1031 | /* If there's no work to be done, don't do any */ | |
1032 | if (obj_aout_symbols (abfd) != (aout_symbol_type *)NULL) return true; | |
1033 | symbol_size = exec_hdr(abfd)->a_syms; | |
1034 | if (symbol_size == 0) { | |
1035 | bfd_error = no_symbols; | |
1036 | return false; | |
1037 | } | |
1038 | ||
1039 | bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET); | |
1040 | if (bfd_read ((PTR)string_chars, BYTES_IN_WORD, 1, abfd) != BYTES_IN_WORD) | |
1041 | return false; | |
1042 | string_size = GET_WORD (abfd, string_chars); | |
1043 | ||
1044 | strings =(char *) bfd_alloc(abfd, string_size + 1); | |
1045 | cached = (aout_symbol_type *) | |
1046 | bfd_zalloc(abfd, (bfd_size_type)(bfd_get_symcount (abfd) * sizeof(aout_symbol_type))); | |
67c060c3 SC |
1047 | |
1048 | /* malloc this, so we can free it if simply. The symbol caching | |
1049 | might want to allocate onto the bfd's obstack */ | |
1050 | syms = (struct external_nlist *) malloc(symbol_size); | |
7ed4093a SC |
1051 | bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET); |
1052 | if (bfd_read ((PTR)syms, 1, symbol_size, abfd) != symbol_size) { | |
1053 | bailout: | |
67c060c3 | 1054 | if (syms) free (syms); |
7ed4093a SC |
1055 | if (cached) bfd_release (abfd, cached); |
1056 | if (strings)bfd_release (abfd, strings); | |
1057 | return false; | |
1058 | } | |
1059 | ||
1060 | bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET); | |
1061 | if (bfd_read ((PTR)strings, 1, string_size, abfd) != string_size) { | |
1062 | goto bailout; | |
1063 | } | |
1064 | ||
1065 | /* OK, now walk the new symtable, cacheing symbol properties */ | |
1066 | { | |
1067 | register struct external_nlist *sym_pointer; | |
1068 | register struct external_nlist *sym_end = syms + bfd_get_symcount (abfd); | |
1069 | register aout_symbol_type *cache_ptr = cached; | |
1070 | ||
1071 | /* Run through table and copy values */ | |
1072 | for (sym_pointer = syms, cache_ptr = cached; | |
1073 | sym_pointer < sym_end; sym_pointer++, cache_ptr++) | |
1074 | { | |
1075 | bfd_vma x = GET_WORD(abfd, sym_pointer->e_strx); | |
1076 | cache_ptr->symbol.the_bfd = abfd; | |
1077 | if (x) | |
1078 | cache_ptr->symbol.name = x + strings; | |
1079 | else | |
1080 | cache_ptr->symbol.name = (char *)NULL; | |
1081 | ||
1082 | cache_ptr->symbol.value = GET_SWORD(abfd, sym_pointer->e_value); | |
1083 | cache_ptr->desc = bfd_get_16(abfd, sym_pointer->e_desc); | |
1084 | cache_ptr->other =bfd_get_8(abfd, sym_pointer->e_other); | |
1085 | cache_ptr->type = bfd_get_8(abfd, sym_pointer->e_type); | |
1086 | cache_ptr->symbol.udata = 0; | |
1087 | translate_from_native_sym_flags (sym_pointer, cache_ptr, abfd); | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | obj_aout_symbols (abfd) = cached; | |
67c060c3 | 1092 | free((PTR)syms); |
7ed4093a SC |
1093 | |
1094 | return true; | |
1095 | } | |
1096 | ||
1097 | ||
1098 | void | |
1099 | DEFUN(NAME(aout,write_syms),(abfd), | |
1100 | bfd *abfd) | |
1101 | { | |
1102 | unsigned int count ; | |
1103 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1104 | ||
1105 | bfd_size_type stindex = BYTES_IN_WORD; /* initial string length */ | |
1106 | ||
1107 | for (count = 0; count < bfd_get_symcount (abfd); count++) { | |
1108 | asymbol *g = generic[count]; | |
1109 | struct external_nlist nsp; | |
1110 | ||
1111 | ||
1112 | if (g->name) { | |
1113 | unsigned int length = strlen(g->name) +1; | |
1114 | PUT_WORD (abfd, stindex, (unsigned char *)nsp.e_strx); | |
1115 | stindex += length; | |
1116 | } | |
1117 | else { | |
1118 | PUT_WORD (abfd, 0, (unsigned char *)nsp.e_strx); | |
1119 | } | |
1120 | ||
1121 | if (g->the_bfd->xvec->flavour == abfd->xvec->flavour) | |
1122 | { | |
1123 | bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc); | |
1124 | bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other); | |
1125 | bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type); | |
1126 | } | |
1127 | else | |
1128 | { | |
1129 | bfd_h_put_16(abfd,0, nsp.e_desc); | |
1130 | bfd_h_put_8(abfd, 0, nsp.e_other); | |
1131 | bfd_h_put_8(abfd, 0, nsp.e_type); | |
1132 | } | |
1133 | ||
1134 | ||
1135 | ||
7d003262 | 1136 | translate_to_native_sym_flags (&nsp, g, abfd); |
7ed4093a SC |
1137 | |
1138 | bfd_write((PTR)&nsp,1,EXTERNAL_LIST_SIZE, abfd); | |
1139 | } | |
1140 | ||
1141 | ||
1142 | /* Now output the strings. Be sure to put string length into correct | |
1143 | * byte ordering before writing it. | |
1144 | */ | |
1145 | { | |
1146 | char buffer[BYTES_IN_WORD]; | |
1147 | PUT_WORD (abfd, stindex, (unsigned char *)buffer); | |
1148 | ||
1149 | bfd_write((PTR)buffer, 1, BYTES_IN_WORD, abfd); | |
1150 | } | |
1151 | generic = bfd_get_outsymbols(abfd); | |
1152 | for (count = 0; count < bfd_get_symcount(abfd); count++) | |
1153 | { | |
1154 | asymbol *g = *(generic++); | |
1155 | ||
1156 | if (g->name) | |
1157 | { | |
1158 | size_t length = strlen(g->name)+1; | |
1159 | bfd_write((PTR)g->name, 1, length, abfd); | |
1160 | } | |
1161 | if ((g->flags & BSF_FAKE)==0) { | |
c618de01 | 1162 | g->KEEPIT = (KEEPITTYPE) count; |
7ed4093a SC |
1163 | } |
1164 | } | |
1165 | } | |
1166 | ||
1167 | ||
1168 | ||
1169 | unsigned int | |
1170 | DEFUN(NAME(aout,get_symtab),(abfd, location), | |
1171 | bfd *abfd AND | |
1172 | asymbol **location) | |
1173 | { | |
1174 | unsigned int counter = 0; | |
1175 | aout_symbol_type *symbase; | |
1176 | ||
1177 | if (!NAME(aout,slurp_symbol_table)(abfd)) return 0; | |
1178 | ||
1179 | for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);) | |
1180 | *(location++) = (asymbol *)( symbase++); | |
1181 | *location++ =0; | |
1182 | return bfd_get_symcount(abfd); | |
1183 | } | |
1184 | ||
1185 | \f | |
1186 | /* Standard reloc stuff */ | |
1187 | /* Output standard relocation information to a file in target byte order. */ | |
1188 | ||
1189 | void | |
1190 | DEFUN(NAME(aout,swap_std_reloc_out),(abfd, g, natptr), | |
1191 | bfd *abfd AND | |
1192 | arelent *g AND | |
1193 | struct reloc_std_external *natptr) | |
1194 | { | |
1195 | int r_index; | |
1196 | int r_extern; | |
1197 | unsigned int r_length; | |
1198 | int r_pcrel; | |
1199 | int r_baserel, r_jmptable, r_relative; | |
1200 | unsigned int r_addend; | |
1201 | ||
1202 | PUT_WORD(abfd, g->address, natptr->r_address); | |
1203 | ||
1204 | r_length = g->howto->size ; /* Size as a power of two */ | |
1205 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
1206 | /* r_baserel, r_jmptable, r_relative??? FIXME-soon */ | |
1207 | r_baserel = 0; | |
1208 | r_jmptable = 0; | |
1209 | r_relative = 0; | |
1210 | ||
1211 | r_addend = g->addend; /* Start here, see how it goes */ | |
1212 | ||
1213 | /* name was clobbered by aout_write_syms to be symbol index */ | |
1214 | ||
1215 | if (g->sym_ptr_ptr != NULL) | |
1216 | { | |
1217 | if ((*(g->sym_ptr_ptr))->section) { | |
1218 | /* put the section offset into the addend for output */ | |
1219 | r_addend += (*(g->sym_ptr_ptr))->section->vma; | |
1220 | } | |
1221 | ||
c618de01 | 1222 | r_index = ((*(g->sym_ptr_ptr))->KEEPIT); |
7ed4093a SC |
1223 | r_extern = 1; |
1224 | } | |
1225 | else { | |
1226 | r_extern = 0; | |
1227 | if (g->section == NULL) { | |
1228 | /* It is possible to have a reloc with nothing, we generate an | |
1229 | abs + 0 */ | |
1230 | r_addend = 0; | |
1231 | r_index = N_ABS | N_EXT; | |
1232 | } | |
1233 | else if(g->section->output_section == obj_textsec(abfd)) { | |
1234 | r_index = N_TEXT | N_EXT; | |
1235 | r_addend += g->section->output_section->vma; | |
1236 | } | |
1237 | else if (g->section->output_section == obj_datasec(abfd)) { | |
1238 | r_index = N_DATA | N_EXT; | |
1239 | r_addend += g->section->output_section->vma; | |
1240 | } | |
1241 | else if (g->section->output_section == obj_bsssec(abfd)) { | |
1242 | r_index = N_BSS | N_EXT ; | |
1243 | r_addend += g->section->output_section->vma; | |
1244 | } | |
1245 | else { | |
1246 | BFD_ASSERT(0); | |
1247 | } | |
1248 | } | |
1249 | ||
1250 | /* now the fun stuff */ | |
1251 | if (abfd->xvec->header_byteorder_big_p != false) { | |
1252 | natptr->r_index[0] = r_index >> 16; | |
1253 | natptr->r_index[1] = r_index >> 8; | |
1254 | natptr->r_index[2] = r_index; | |
1255 | natptr->r_type[0] = | |
1256 | (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0) | |
1257 | | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0) | |
1258 | | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0) | |
1259 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0) | |
1260 | | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0) | |
1261 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG); | |
1262 | } else { | |
1263 | natptr->r_index[2] = r_index >> 16; | |
1264 | natptr->r_index[1] = r_index >> 8; | |
1265 | natptr->r_index[0] = r_index; | |
1266 | natptr->r_type[0] = | |
1267 | (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0) | |
1268 | | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0) | |
1269 | | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0) | |
1270 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0) | |
1271 | | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0) | |
1272 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
1273 | } | |
1274 | } | |
1275 | ||
1276 | ||
1277 | /* Extended stuff */ | |
1278 | /* Output extended relocation information to a file in target byte order. */ | |
1279 | ||
1280 | void | |
1281 | DEFUN(NAME(aout,swap_ext_reloc_out),(abfd, g, natptr), | |
1282 | bfd *abfd AND | |
1283 | arelent *g AND | |
1284 | register struct reloc_ext_external *natptr) | |
1285 | { | |
1286 | int r_index; | |
1287 | int r_extern; | |
1288 | unsigned int r_type; | |
1289 | unsigned int r_addend; | |
1290 | ||
1291 | PUT_WORD (abfd, g->address, natptr->r_address); | |
1292 | ||
1293 | /* Find a type in the output format which matches the input howto - | |
1294 | at the moment we assume input format == output format FIXME!! */ | |
1295 | r_type = (enum reloc_type) g->howto->type; | |
1296 | ||
1297 | r_addend = g->addend; /* Start here, see how it goes */ | |
1298 | ||
1299 | /* name was clobbered by aout_write_syms to be symbol index*/ | |
1300 | ||
1301 | if (g->sym_ptr_ptr != NULL) | |
1302 | { | |
1303 | if ((*(g->sym_ptr_ptr))->section) { | |
1304 | /* put the section offset into the addend for output */ | |
1305 | r_addend += (*(g->sym_ptr_ptr))->section->vma; | |
1306 | } | |
1307 | ||
c618de01 | 1308 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); |
7ed4093a SC |
1309 | r_extern = 1; |
1310 | } | |
1311 | else { | |
1312 | r_extern = 0; | |
1313 | if (g->section == NULL) { | |
1314 | BFD_ASSERT(0); | |
1315 | r_index = N_ABS | N_EXT; | |
1316 | } | |
1317 | else if(g->section->output_section == obj_textsec(abfd)) { | |
1318 | r_index = N_TEXT | N_EXT; | |
1319 | r_addend += g->section->output_section->vma; | |
1320 | } | |
1321 | else if (g->section->output_section == obj_datasec(abfd)) { | |
1322 | r_index = N_DATA | N_EXT; | |
1323 | r_addend += g->section->output_section->vma; | |
1324 | } | |
1325 | else if (g->section->output_section == obj_bsssec(abfd)) { | |
1326 | r_index = N_BSS | N_EXT ; | |
1327 | r_addend += g->section->output_section->vma; | |
1328 | } | |
1329 | else { | |
1330 | BFD_ASSERT(0); | |
1331 | } | |
1332 | } | |
1333 | ||
1334 | /* now the fun stuff */ | |
1335 | if (abfd->xvec->header_byteorder_big_p != false) { | |
1336 | natptr->r_index[0] = r_index >> 16; | |
1337 | natptr->r_index[1] = r_index >> 8; | |
1338 | natptr->r_index[2] = r_index; | |
1339 | natptr->r_type[0] = | |
1340 | (r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0) | |
1341 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG); | |
1342 | } else { | |
1343 | natptr->r_index[2] = r_index >> 16; | |
1344 | natptr->r_index[1] = r_index >> 8; | |
1345 | natptr->r_index[0] = r_index; | |
1346 | natptr->r_type[0] = | |
1347 | (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0) | |
1348 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
1349 | } | |
1350 | ||
1351 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
1352 | } | |
1353 | ||
1354 | #define MOVE_ADDRESS(ad) \ | |
1355 | if (r_extern) { \ | |
1356 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
1357 | cache_ptr->section = (asection *)NULL; \ | |
1358 | cache_ptr->addend = ad; \ | |
1359 | } else { \ | |
1360 | cache_ptr->sym_ptr_ptr = (asymbol **)NULL; \ | |
1361 | switch (r_index) { \ | |
1362 | case N_TEXT: \ | |
1363 | case N_TEXT | N_EXT: \ | |
1364 | cache_ptr->section = obj_textsec(abfd); \ | |
1365 | cache_ptr->addend = ad - su->textsec->vma; \ | |
1366 | break; \ | |
1367 | case N_DATA: \ | |
1368 | case N_DATA | N_EXT: \ | |
1369 | cache_ptr->section = obj_datasec(abfd); \ | |
1370 | cache_ptr->addend = ad - su->datasec->vma; \ | |
1371 | break; \ | |
1372 | case N_BSS: \ | |
1373 | case N_BSS | N_EXT: \ | |
1374 | cache_ptr->section = obj_bsssec(abfd); \ | |
1375 | cache_ptr->addend = ad - su->bsssec->vma; \ | |
1376 | break; \ | |
1377 | case N_ABS: \ | |
1378 | case N_ABS | N_EXT: \ | |
1379 | cache_ptr->section = NULL; /* No section */ \ | |
1380 | cache_ptr->addend = ad; /* FIXME, is this right? */ \ | |
1381 | BFD_ASSERT(1); \ | |
1382 | break; \ | |
1383 | default: \ | |
1384 | cache_ptr->section = NULL; /* No section */ \ | |
1385 | cache_ptr->addend = ad; /* FIXME, is this right? */ \ | |
1386 | BFD_ASSERT(1); \ | |
1387 | break; \ | |
1388 | } \ | |
1389 | } \ | |
1390 | ||
1391 | void | |
1392 | DEFUN(NAME(aout,swap_ext_reloc_in), (abfd, bytes, cache_ptr, symbols), | |
1393 | bfd *abfd AND | |
1394 | struct reloc_ext_external *bytes AND | |
1395 | arelent *cache_ptr AND | |
1396 | asymbol **symbols) | |
1397 | { | |
1398 | int r_index; | |
1399 | int r_extern; | |
1400 | unsigned int r_type; | |
1401 | struct aoutdata *su = (struct aoutdata *)(abfd->tdata); | |
1402 | ||
1403 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
1404 | ||
1405 | /* now the fun stuff */ | |
1406 | if (abfd->xvec->header_byteorder_big_p != false) { | |
1407 | r_index = (bytes->r_index[0] << 16) | |
1408 | | (bytes->r_index[1] << 8) | |
1409 | | bytes->r_index[2]; | |
1410 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
1411 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
1412 | >> RELOC_EXT_BITS_TYPE_SH_BIG; | |
1413 | } else { | |
1414 | r_index = (bytes->r_index[2] << 16) | |
1415 | | (bytes->r_index[1] << 8) | |
1416 | | bytes->r_index[0]; | |
1417 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
1418 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
1419 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE; | |
1420 | } | |
1421 | ||
1422 | cache_ptr->howto = howto_table_ext + r_type; | |
1423 | MOVE_ADDRESS(GET_SWORD(abfd,bytes->r_addend)); | |
1424 | } | |
1425 | ||
1426 | void | |
1427 | DEFUN(NAME(aout,swap_std_reloc_in), (abfd, bytes, cache_ptr, symbols), | |
1428 | bfd *abfd AND | |
1429 | struct reloc_std_external *bytes AND | |
1430 | arelent *cache_ptr AND | |
1431 | asymbol **symbols) | |
1432 | { | |
1433 | int r_index; | |
1434 | int r_extern; | |
1435 | unsigned int r_length; | |
1436 | int r_pcrel; | |
1437 | int r_baserel, r_jmptable, r_relative; | |
1438 | struct aoutdata *su = (struct aoutdata *)(abfd->tdata); | |
1439 | ||
1440 | cache_ptr->address = (int32_type)(bfd_h_get_32 (abfd, bytes->r_address)); | |
1441 | ||
1442 | /* now the fun stuff */ | |
1443 | if (abfd->xvec->header_byteorder_big_p != false) { | |
1444 | r_index = (bytes->r_index[0] << 16) | |
1445 | | (bytes->r_index[1] << 8) | |
1446 | | bytes->r_index[2]; | |
1447 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
1448 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
1449 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
1450 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
1451 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
1452 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
1453 | >> RELOC_STD_BITS_LENGTH_SH_BIG; | |
1454 | } else { | |
1455 | r_index = (bytes->r_index[2] << 16) | |
1456 | | (bytes->r_index[1] << 8) | |
1457 | | bytes->r_index[0]; | |
1458 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
1459 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
1460 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
1461 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
1462 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
1463 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
1464 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE; | |
1465 | } | |
1466 | ||
1467 | cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel; | |
1468 | /* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */ | |
1469 | ||
1470 | MOVE_ADDRESS(0); | |
1471 | } | |
1472 | ||
1473 | /* Reloc hackery */ | |
1474 | ||
1475 | boolean | |
1476 | DEFUN(NAME(aout,slurp_reloc_table),(abfd, asect, symbols), | |
1477 | bfd *abfd AND | |
1478 | sec_ptr asect AND | |
1479 | asymbol **symbols) | |
1480 | { | |
1481 | unsigned int count; | |
1482 | bfd_size_type reloc_size; | |
1483 | PTR relocs; | |
1484 | arelent *reloc_cache; | |
1485 | size_t each_size; | |
1486 | ||
1487 | if (asect->relocation) return true; | |
1488 | ||
1489 | if (asect->flags & SEC_CONSTRUCTOR) return true; | |
1490 | ||
1491 | if (asect == obj_datasec (abfd)) { | |
1492 | reloc_size = exec_hdr(abfd)->a_drsize; | |
1493 | goto doit; | |
1494 | } | |
1495 | ||
1496 | if (asect == obj_textsec (abfd)) { | |
1497 | reloc_size = exec_hdr(abfd)->a_trsize; | |
1498 | goto doit; | |
1499 | } | |
1500 | ||
1501 | bfd_error = invalid_operation; | |
1502 | return false; | |
1503 | ||
1504 | doit: | |
1505 | bfd_seek (abfd, asect->rel_filepos, SEEK_SET); | |
1506 | each_size = obj_reloc_entry_size (abfd); | |
1507 | ||
1508 | count = reloc_size / each_size; | |
1509 | ||
1510 | ||
1511 | reloc_cache = (arelent *) bfd_zalloc (abfd, (size_t)(count * sizeof | |
1512 | (arelent))); | |
1513 | if (!reloc_cache) { | |
1514 | nomem: | |
1515 | bfd_error = no_memory; | |
1516 | return false; | |
1517 | } | |
1518 | ||
1519 | relocs = (PTR) bfd_alloc (abfd, reloc_size); | |
1520 | if (!relocs) { | |
1521 | bfd_release (abfd, reloc_cache); | |
1522 | goto nomem; | |
1523 | } | |
1524 | ||
1525 | if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) { | |
1526 | bfd_release (abfd, relocs); | |
1527 | bfd_release (abfd, reloc_cache); | |
1528 | bfd_error = system_call_error; | |
1529 | return false; | |
1530 | } | |
1531 | ||
1532 | if (each_size == RELOC_EXT_SIZE) { | |
1533 | register struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; | |
1534 | unsigned int counter = 0; | |
1535 | arelent *cache_ptr = reloc_cache; | |
1536 | ||
1537 | for (; counter < count; counter++, rptr++, cache_ptr++) { | |
1538 | NAME(aout,swap_ext_reloc_in)(abfd, rptr, cache_ptr, symbols); | |
1539 | } | |
1540 | } else { | |
1541 | register struct reloc_std_external *rptr = (struct reloc_std_external*) relocs; | |
1542 | unsigned int counter = 0; | |
1543 | arelent *cache_ptr = reloc_cache; | |
1544 | ||
1545 | for (; counter < count; counter++, rptr++, cache_ptr++) { | |
1546 | NAME(aout,swap_std_reloc_in)(abfd, rptr, cache_ptr, symbols); | |
1547 | } | |
1548 | ||
1549 | } | |
1550 | ||
1551 | bfd_release (abfd,relocs); | |
1552 | asect->relocation = reloc_cache; | |
1553 | asect->reloc_count = count; | |
1554 | return true; | |
1555 | } | |
1556 | ||
1557 | ||
1558 | ||
1559 | /* Write out a relocation section into an object file. */ | |
1560 | ||
1561 | boolean | |
1562 | DEFUN(NAME(aout,squirt_out_relocs),(abfd, section), | |
1563 | bfd *abfd AND | |
1564 | asection *section) | |
1565 | { | |
1566 | arelent **generic; | |
1567 | unsigned char *native, *natptr; | |
1568 | size_t each_size; | |
1569 | ||
1570 | unsigned int count = section->reloc_count; | |
1571 | size_t natsize; | |
1572 | ||
1573 | if (count == 0) return true; | |
1574 | ||
1575 | each_size = obj_reloc_entry_size (abfd); | |
1576 | natsize = each_size * count; | |
1577 | native = (unsigned char *) bfd_zalloc (abfd, natsize); | |
1578 | if (!native) { | |
1579 | bfd_error = no_memory; | |
1580 | return false; | |
1581 | } | |
1582 | ||
1583 | generic = section->orelocation; | |
1584 | ||
1585 | if (each_size == RELOC_EXT_SIZE) | |
1586 | { | |
1587 | for (natptr = native; | |
1588 | count != 0; | |
1589 | --count, natptr += each_size, ++generic) | |
1590 | NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr); | |
1591 | } | |
1592 | else | |
1593 | { | |
1594 | for (natptr = native; | |
1595 | count != 0; | |
1596 | --count, natptr += each_size, ++generic) | |
1597 | NAME(aout,swap_std_reloc_out)(abfd, *generic, (struct reloc_std_external *)natptr); | |
1598 | } | |
1599 | ||
1600 | if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) { | |
1601 | bfd_release(abfd, native); | |
1602 | return false; | |
1603 | } | |
1604 | bfd_release (abfd, native); | |
1605 | ||
1606 | return true; | |
1607 | } | |
1608 | ||
1609 | /* This is stupid. This function should be a boolean predicate */ | |
1610 | unsigned int | |
1611 | DEFUN(NAME(aout,canonicalize_reloc),(abfd, section, relptr, symbols), | |
1612 | bfd *abfd AND | |
1613 | sec_ptr section AND | |
1614 | arelent **relptr AND | |
1615 | asymbol **symbols) | |
1616 | { | |
1617 | arelent *tblptr = section->relocation; | |
1618 | unsigned int count; | |
1619 | ||
1620 | if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols))) | |
1621 | return 0; | |
1622 | ||
1623 | if (section->flags & SEC_CONSTRUCTOR) { | |
1624 | arelent_chain *chain = section->constructor_chain; | |
1625 | for (count = 0; count < section->reloc_count; count ++) { | |
1626 | *relptr ++ = &chain->relent; | |
1627 | chain = chain->next; | |
1628 | } | |
1629 | } | |
1630 | else { | |
1631 | tblptr = section->relocation; | |
1632 | if (!tblptr) return 0; | |
1633 | ||
1634 | for (count = 0; count++ < section->reloc_count;) | |
1635 | { | |
1636 | *relptr++ = tblptr++; | |
1637 | } | |
1638 | } | |
1639 | *relptr = 0; | |
1640 | ||
1641 | return section->reloc_count; | |
1642 | } | |
1643 | ||
1644 | unsigned int | |
1645 | DEFUN(NAME(aout,get_reloc_upper_bound),(abfd, asect), | |
1646 | bfd *abfd AND | |
1647 | sec_ptr asect) | |
1648 | { | |
1649 | if (bfd_get_format (abfd) != bfd_object) { | |
1650 | bfd_error = invalid_operation; | |
1651 | return 0; | |
1652 | } | |
1653 | if (asect->flags & SEC_CONSTRUCTOR) { | |
1654 | return (sizeof (arelent *) * (asect->reloc_count+1)); | |
1655 | } | |
1656 | ||
1657 | ||
1658 | if (asect == obj_datasec (abfd)) | |
1659 | return (sizeof (arelent *) * | |
1660 | ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd)) | |
1661 | +1)); | |
1662 | ||
1663 | if (asect == obj_textsec (abfd)) | |
1664 | return (sizeof (arelent *) * | |
1665 | ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd)) | |
1666 | +1)); | |
1667 | ||
1668 | bfd_error = invalid_operation; | |
1669 | return 0; | |
1670 | } | |
1671 | ||
1672 | \f | |
1673 | unsigned int | |
1674 | DEFUN(NAME(aout,get_symtab_upper_bound),(abfd), | |
1675 | bfd *abfd) | |
1676 | { | |
1677 | if (!NAME(aout,slurp_symbol_table)(abfd)) return 0; | |
1678 | ||
1679 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
1680 | } | |
1681 | alent * | |
1682 | DEFUN(NAME(aout,get_lineno),(ignore_abfd, ignore_symbol), | |
1683 | bfd *ignore_abfd AND | |
1684 | asymbol *ignore_symbol) | |
1685 | { | |
1686 | return (alent *)NULL; | |
1687 | } | |
1688 | ||
1689 | ||
1690 | void | |
1691 | DEFUN(NAME(aout,print_symbol),(ignore_abfd, afile, symbol, how), | |
1692 | bfd *ignore_abfd AND | |
1693 | PTR afile AND | |
1694 | asymbol *symbol AND | |
1695 | bfd_print_symbol_enum_type how) | |
1696 | { | |
1697 | FILE *file = (FILE *)afile; | |
1698 | ||
1699 | switch (how) { | |
1700 | case bfd_print_symbol_name_enum: | |
1701 | fprintf(file,"%s", symbol->name); | |
1702 | break; | |
1703 | case bfd_print_symbol_type_enum: | |
1704 | fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
1705 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
1706 | (unsigned)(aout_symbol(symbol)->type)); | |
1707 | break; | |
1708 | case bfd_print_symbol_all_enum: | |
1709 | { | |
1710 | CONST char *section_name = symbol->section == (asection *)NULL ? | |
1711 | "*abs" : symbol->section->name; | |
1712 | ||
1713 | bfd_print_symbol_vandf((PTR)file,symbol); | |
1714 | ||
1715 | fprintf(file," %-5s %04x %02x %02x %s", | |
1716 | section_name, | |
1717 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
1718 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
1719 | (unsigned)(aout_symbol(symbol)->type & 0xff), | |
1720 | symbol->name); | |
1721 | } | |
1722 | break; | |
1723 | } | |
1724 | } | |
1725 | ||
1726 | /* | |
6724ff46 | 1727 | provided a BFD, a section and an offset into the section, calculate |
7ed4093a SC |
1728 | and return the name of the source file and the line nearest to the |
1729 | wanted location. | |
1730 | */ | |
1731 | ||
1732 | boolean | |
1733 | DEFUN(NAME(aout,find_nearest_line),(abfd, | |
1734 | section, | |
1735 | symbols, | |
1736 | offset, | |
1737 | filename_ptr, | |
1738 | functionname_ptr, | |
1739 | line_ptr), | |
1740 | bfd *abfd AND | |
1741 | asection *section AND | |
1742 | asymbol **symbols AND | |
1743 | bfd_vma offset AND | |
1744 | CONST char **filename_ptr AND | |
1745 | CONST char **functionname_ptr AND | |
1746 | unsigned int *line_ptr) | |
1747 | { | |
1748 | /* Run down the file looking for the filename, function and linenumber */ | |
1749 | asymbol **p; | |
1750 | static char buffer[100]; | |
1751 | bfd_vma high_line_vma = ~0; | |
1752 | bfd_vma low_func_vma = 0; | |
1753 | asymbol *func = 0; | |
1754 | *filename_ptr = abfd->filename; | |
1755 | *functionname_ptr = 0; | |
1756 | *line_ptr = 0; | |
1757 | if (symbols != (asymbol **)NULL) { | |
1758 | for (p = symbols; *p; p++) { | |
1759 | aout_symbol_type *q = (aout_symbol_type *)(*p); | |
1760 | switch (q->type){ | |
1761 | case N_SO: | |
1762 | *filename_ptr = q->symbol.name; | |
1763 | if (obj_textsec(abfd) != section) { | |
1764 | return true; | |
1765 | } | |
1766 | break; | |
1767 | case N_SLINE: | |
1768 | ||
1769 | case N_DSLINE: | |
1770 | case N_BSLINE: | |
1771 | /* We'll keep this if it resolves nearer than the one we have already */ | |
1772 | if (q->symbol.value >= offset && | |
1773 | q->symbol.value < high_line_vma) { | |
1774 | *line_ptr = q->desc; | |
1775 | high_line_vma = q->symbol.value; | |
1776 | } | |
1777 | break; | |
1778 | case N_FUN: | |
1779 | { | |
1780 | /* We'll keep this if it is nearer than the one we have already */ | |
1781 | if (q->symbol.value >= low_func_vma && | |
1782 | q->symbol.value <= offset) { | |
1783 | low_func_vma = q->symbol.value; | |
1784 | func = (asymbol *)q; | |
1785 | } | |
1786 | if (*line_ptr && func) { | |
1787 | CONST char *function = func->name; | |
1788 | char *p; | |
1789 | strncpy(buffer, function, sizeof(buffer)-1); | |
1790 | buffer[sizeof(buffer)-1] = 0; | |
1791 | /* Have to remove : stuff */ | |
1792 | p = strchr(buffer,':'); | |
6f715d66 | 1793 | if (p != NULL) { *p = NULL; } |
7ed4093a SC |
1794 | *functionname_ptr = buffer; |
1795 | return true; | |
1796 | ||
1797 | } | |
1798 | } | |
1799 | break; | |
1800 | } | |
1801 | } | |
1802 | } | |
1803 | ||
1804 | return true; | |
1805 | ||
1806 | } | |
1807 | ||
1808 | int | |
1809 | DEFUN(NAME(aout,sizeof_headers),(ignore_abfd, execable), | |
1810 | bfd *ignore_abfd AND | |
1811 | boolean execable) | |
1812 | { | |
1813 | return EXEC_BYTES_SIZE; | |
1814 | } |