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252b5132 | 1 | /* BFD semi-generic back-end for a.out binaries. |
2571583a | 2 | Copyright (C) 1990-2017 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Cygnus Support. |
4 | ||
f7c33884 | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
f7c33884 NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
f7c33884 | 10 | (at your option) any later version. |
252b5132 | 11 | |
f7c33884 NC |
12 | This program is distributed in the hope that it will be useful, |
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. | |
252b5132 | 16 | |
f7c33884 NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 RH |
21 | |
22 | /* | |
23 | SECTION | |
24 | a.out backends | |
25 | ||
252b5132 RH |
26 | DESCRIPTION |
27 | ||
28 | BFD supports a number of different flavours of a.out format, | |
29 | though the major differences are only the sizes of the | |
30 | structures on disk, and the shape of the relocation | |
31 | information. | |
32 | ||
33 | The support is split into a basic support file @file{aoutx.h} | |
34 | and other files which derive functions from the base. One | |
35 | derivation file is @file{aoutf1.h} (for a.out flavour 1), and | |
36 | adds to the basic a.out functions support for sun3, sun4, 386 | |
37 | and 29k a.out files, to create a target jump vector for a | |
38 | specific target. | |
39 | ||
40 | This information is further split out into more specific files | |
41 | for each machine, including @file{sunos.c} for sun3 and sun4, | |
42 | @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a | |
43 | demonstration of a 64 bit a.out format. | |
44 | ||
45 | The base file @file{aoutx.h} defines general mechanisms for | |
46 | reading and writing records to and from disk and various | |
47 | other methods which BFD requires. It is included by | |
48 | @file{aout32.c} and @file{aout64.c} to form the names | |
49 | <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc. | |
50 | ||
51 | As an example, this is what goes on to make the back end for a | |
52 | sun4, from @file{aout32.c}: | |
53 | ||
54 | | #define ARCH_SIZE 32 | |
55 | | #include "aoutx.h" | |
56 | ||
57 | Which exports names: | |
58 | ||
59 | | ... | |
60 | | aout_32_canonicalize_reloc | |
61 | | aout_32_find_nearest_line | |
62 | | aout_32_get_lineno | |
63 | | aout_32_get_reloc_upper_bound | |
64 | | ... | |
65 | ||
66 | from @file{sunos.c}: | |
67 | ||
68 | | #define TARGET_NAME "a.out-sunos-big" | |
6d00b590 | 69 | | #define VECNAME sparc_aout_sunos_be_vec |
252b5132 RH |
70 | | #include "aoutf1.h" |
71 | ||
72 | requires all the names from @file{aout32.c}, and produces the jump vector | |
73 | ||
6d00b590 | 74 | | sparc_aout_sunos_be_vec |
252b5132 RH |
75 | |
76 | The file @file{host-aout.c} is a special case. It is for a large set | |
77 | of hosts that use ``more or less standard'' a.out files, and | |
78 | for which cross-debugging is not interesting. It uses the | |
79 | standard 32-bit a.out support routines, but determines the | |
80 | file offsets and addresses of the text, data, and BSS | |
81 | sections, the machine architecture and machine type, and the | |
82 | entry point address, in a host-dependent manner. Once these | |
83 | values have been determined, generic code is used to handle | |
84 | the object file. | |
85 | ||
86 | When porting it to run on a new system, you must supply: | |
87 | ||
88 | | HOST_PAGE_SIZE | |
89 | | HOST_SEGMENT_SIZE | |
90 | | HOST_MACHINE_ARCH (optional) | |
91 | | HOST_MACHINE_MACHINE (optional) | |
92 | | HOST_TEXT_START_ADDR | |
93 | | HOST_STACK_END_ADDR | |
94 | ||
95 | in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These | |
96 | values, plus the structures and macros defined in @file{a.out.h} on | |
97 | your host system, will produce a BFD target that will access | |
98 | ordinary a.out files on your host. To configure a new machine | |
99 | to use @file{host-aout.c}, specify: | |
100 | ||
101 | | TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec | |
102 | | TDEPFILES= host-aout.o trad-core.o | |
103 | ||
1110793a | 104 | in the @file{config/@var{XXX}.mt} file, and modify @file{configure.ac} |
252b5132 RH |
105 | to use the |
106 | @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your | |
5ed6aba4 | 107 | configuration is selected. */ |
252b5132 RH |
108 | |
109 | /* Some assumptions: | |
110 | * Any BFD with D_PAGED set is ZMAGIC, and vice versa. | |
111 | Doesn't matter what the setting of WP_TEXT is on output, but it'll | |
112 | get set on input. | |
113 | * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC. | |
114 | * Any BFD with both flags clear is OMAGIC. | |
115 | (Just want to make these explicit, so the conditions tested in this | |
116 | file make sense if you're more familiar with a.out than with BFD.) */ | |
117 | ||
118 | #define KEEPIT udata.i | |
119 | ||
252b5132 | 120 | #include "sysdep.h" |
3db64b00 | 121 | #include "bfd.h" |
3882b010 | 122 | #include "safe-ctype.h" |
252b5132 RH |
123 | #include "bfdlink.h" |
124 | ||
125 | #include "libaout.h" | |
126 | #include "libbfd.h" | |
127 | #include "aout/aout64.h" | |
128 | #include "aout/stab_gnu.h" | |
129 | #include "aout/ar.h" | |
130 | ||
252b5132 RH |
131 | /* |
132 | SUBSECTION | |
133 | Relocations | |
134 | ||
135 | DESCRIPTION | |
136 | The file @file{aoutx.h} provides for both the @emph{standard} | |
137 | and @emph{extended} forms of a.out relocation records. | |
138 | ||
139 | The standard records contain only an | |
140 | address, a symbol index, and a type field. The extended records | |
141 | (used on 29ks and sparcs) also have a full integer for an | |
5ed6aba4 | 142 | addend. */ |
252b5132 | 143 | |
252b5132 RH |
144 | #ifndef CTOR_TABLE_RELOC_HOWTO |
145 | #define CTOR_TABLE_RELOC_IDX 2 | |
923f08ff AM |
146 | #define CTOR_TABLE_RELOC_HOWTO(BFD) \ |
147 | ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \ | |
148 | ? howto_table_ext : howto_table_std) \ | |
149 | + CTOR_TABLE_RELOC_IDX) | |
252b5132 RH |
150 | #endif |
151 | ||
152 | #ifndef MY_swap_std_reloc_in | |
116c20d2 | 153 | #define MY_swap_std_reloc_in NAME (aout, swap_std_reloc_in) |
252b5132 RH |
154 | #endif |
155 | ||
1642229e | 156 | #ifndef MY_swap_ext_reloc_in |
116c20d2 | 157 | #define MY_swap_ext_reloc_in NAME (aout, swap_ext_reloc_in) |
1642229e HPN |
158 | #endif |
159 | ||
252b5132 | 160 | #ifndef MY_swap_std_reloc_out |
116c20d2 | 161 | #define MY_swap_std_reloc_out NAME (aout, swap_std_reloc_out) |
252b5132 RH |
162 | #endif |
163 | ||
1642229e | 164 | #ifndef MY_swap_ext_reloc_out |
116c20d2 | 165 | #define MY_swap_ext_reloc_out NAME (aout, swap_ext_reloc_out) |
1642229e HPN |
166 | #endif |
167 | ||
252b5132 RH |
168 | #ifndef MY_final_link_relocate |
169 | #define MY_final_link_relocate _bfd_final_link_relocate | |
170 | #endif | |
171 | ||
172 | #ifndef MY_relocate_contents | |
173 | #define MY_relocate_contents _bfd_relocate_contents | |
174 | #endif | |
175 | ||
116c20d2 NC |
176 | #define howto_table_ext NAME (aout, ext_howto_table) |
177 | #define howto_table_std NAME (aout, std_howto_table) | |
252b5132 RH |
178 | |
179 | reloc_howto_type howto_table_ext[] = | |
180 | { | |
116c20d2 NC |
181 | /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */ |
182 | HOWTO (RELOC_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "8", FALSE, 0, 0x000000ff, FALSE), | |
183 | HOWTO (RELOC_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, 0, "16", FALSE, 0, 0x0000ffff, FALSE), | |
184 | HOWTO (RELOC_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "32", FALSE, 0, 0xffffffff, FALSE), | |
185 | HOWTO (RELOC_DISP8, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0, "DISP8", FALSE, 0, 0x000000ff, FALSE), | |
186 | HOWTO (RELOC_DISP16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "DISP16", FALSE, 0, 0x0000ffff, FALSE), | |
187 | HOWTO (RELOC_DISP32, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0, "DISP32", FALSE, 0, 0xffffffff, FALSE), | |
188 | HOWTO (RELOC_WDISP30, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "WDISP30", FALSE, 0, 0x3fffffff, FALSE), | |
189 | HOWTO (RELOC_WDISP22, 2, 2, 22, TRUE, 0, complain_overflow_signed, 0, "WDISP22", FALSE, 0, 0x003fffff, FALSE), | |
190 | HOWTO (RELOC_HI22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "HI22", FALSE, 0, 0x003fffff, FALSE), | |
191 | HOWTO (RELOC_22, 0, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "22", FALSE, 0, 0x003fffff, FALSE), | |
192 | HOWTO (RELOC_13, 0, 2, 13, FALSE, 0, complain_overflow_bitfield, 0, "13", FALSE, 0, 0x00001fff, FALSE), | |
193 | HOWTO (RELOC_LO10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "LO10", FALSE, 0, 0x000003ff, FALSE), | |
194 | HOWTO (RELOC_SFA_BASE,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_BASE", FALSE, 0, 0xffffffff, FALSE), | |
195 | HOWTO (RELOC_SFA_OFF13,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_OFF13", FALSE, 0, 0xffffffff, FALSE), | |
196 | HOWTO (RELOC_BASE10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "BASE10", FALSE, 0, 0x000003ff, FALSE), | |
197 | HOWTO (RELOC_BASE13, 0, 2, 13, FALSE, 0, complain_overflow_signed, 0, "BASE13", FALSE, 0, 0x00001fff, FALSE), | |
198 | HOWTO (RELOC_BASE22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "BASE22", FALSE, 0, 0x003fffff, FALSE), | |
199 | HOWTO (RELOC_PC10, 0, 2, 10, TRUE, 0, complain_overflow_dont, 0, "PC10", FALSE, 0, 0x000003ff, TRUE), | |
200 | HOWTO (RELOC_PC22, 10, 2, 22, TRUE, 0, complain_overflow_signed, 0, "PC22", FALSE, 0, 0x003fffff, TRUE), | |
201 | HOWTO (RELOC_JMP_TBL, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "JMP_TBL", FALSE, 0, 0x3fffffff, FALSE), | |
202 | HOWTO (RELOC_SEGOFF16,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "SEGOFF16", FALSE, 0, 0x00000000, FALSE), | |
203 | HOWTO (RELOC_GLOB_DAT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "GLOB_DAT", FALSE, 0, 0x00000000, FALSE), | |
204 | HOWTO (RELOC_JMP_SLOT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "JMP_SLOT", FALSE, 0, 0x00000000, FALSE), | |
205 | HOWTO (RELOC_RELATIVE,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "RELATIVE", FALSE, 0, 0x00000000, FALSE), | |
6346d5ca AM |
206 | HOWTO (0, 0, 3, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE), |
207 | HOWTO (0, 0, 3, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE), | |
252b5132 | 208 | #define RELOC_SPARC_REV32 RELOC_WDISP19 |
116c20d2 | 209 | HOWTO (RELOC_SPARC_REV32, 0, 2, 32, FALSE, 0, complain_overflow_dont, 0,"R_SPARC_REV32",FALSE, 0, 0xffffffff, FALSE), |
252b5132 RH |
210 | }; |
211 | ||
212 | /* Convert standard reloc records to "arelent" format (incl byte swap). */ | |
213 | ||
5ed6aba4 NC |
214 | reloc_howto_type howto_table_std[] = |
215 | { | |
f7c33884 | 216 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */ |
b34976b6 AM |
217 | HOWTO ( 0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", TRUE, 0x000000ff,0x000000ff, FALSE), |
218 | HOWTO ( 1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE), | |
219 | HOWTO ( 2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", TRUE, 0xffffffff,0xffffffff, FALSE), | |
220 | HOWTO ( 3, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,0,"64", TRUE, 0xdeaddead,0xdeaddead, FALSE), | |
221 | HOWTO ( 4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,"DISP8", TRUE, 0x000000ff,0x000000ff, FALSE), | |
222 | HOWTO ( 5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, FALSE), | |
223 | HOWTO ( 6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0,"DISP32", TRUE, 0xffffffff,0xffffffff, FALSE), | |
224 | HOWTO ( 7, 0, 4, 64, TRUE, 0, complain_overflow_signed, 0,"DISP64", TRUE, 0xfeedface,0xfeedface, FALSE), | |
225 | HOWTO ( 8, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"GOT_REL", FALSE, 0,0x00000000, FALSE), | |
226 | HOWTO ( 9, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"BASE16", FALSE,0xffffffff,0xffffffff, FALSE), | |
227 | HOWTO (10, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"BASE32", FALSE,0xffffffff,0xffffffff, FALSE), | |
5f771d47 ILT |
228 | EMPTY_HOWTO (-1), |
229 | EMPTY_HOWTO (-1), | |
230 | EMPTY_HOWTO (-1), | |
231 | EMPTY_HOWTO (-1), | |
232 | EMPTY_HOWTO (-1), | |
b34976b6 | 233 | HOWTO (16, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"JMP_TABLE", FALSE, 0,0x00000000, FALSE), |
5f771d47 ILT |
234 | EMPTY_HOWTO (-1), |
235 | EMPTY_HOWTO (-1), | |
236 | EMPTY_HOWTO (-1), | |
237 | EMPTY_HOWTO (-1), | |
238 | EMPTY_HOWTO (-1), | |
239 | EMPTY_HOWTO (-1), | |
240 | EMPTY_HOWTO (-1), | |
241 | EMPTY_HOWTO (-1), | |
242 | EMPTY_HOWTO (-1), | |
243 | EMPTY_HOWTO (-1), | |
244 | EMPTY_HOWTO (-1), | |
245 | EMPTY_HOWTO (-1), | |
246 | EMPTY_HOWTO (-1), | |
247 | EMPTY_HOWTO (-1), | |
248 | EMPTY_HOWTO (-1), | |
b34976b6 | 249 | HOWTO (32, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"RELATIVE", FALSE, 0,0x00000000, FALSE), |
5f771d47 ILT |
250 | EMPTY_HOWTO (-1), |
251 | EMPTY_HOWTO (-1), | |
252 | EMPTY_HOWTO (-1), | |
253 | EMPTY_HOWTO (-1), | |
254 | EMPTY_HOWTO (-1), | |
255 | EMPTY_HOWTO (-1), | |
256 | EMPTY_HOWTO (-1), | |
b34976b6 | 257 | HOWTO (40, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"BASEREL", FALSE, 0,0x00000000, FALSE), |
252b5132 RH |
258 | }; |
259 | ||
923f08ff | 260 | #define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0])) |
252b5132 RH |
261 | |
262 | reloc_howto_type * | |
116c20d2 | 263 | NAME (aout, reloc_type_lookup) (bfd *abfd, bfd_reloc_code_real_type code) |
252b5132 | 264 | { |
116c20d2 NC |
265 | #define EXT(i, j) case i: return & howto_table_ext [j] |
266 | #define STD(i, j) case i: return & howto_table_std [j] | |
252b5132 | 267 | int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE; |
f7c33884 | 268 | |
252b5132 | 269 | if (code == BFD_RELOC_CTOR) |
30d10e9e | 270 | switch (bfd_arch_bits_per_address (abfd)) |
252b5132 RH |
271 | { |
272 | case 32: | |
273 | code = BFD_RELOC_32; | |
274 | break; | |
275 | case 64: | |
276 | code = BFD_RELOC_64; | |
277 | break; | |
278 | } | |
f7c33884 | 279 | |
252b5132 RH |
280 | if (ext) |
281 | switch (code) | |
282 | { | |
1642229e HPN |
283 | EXT (BFD_RELOC_8, 0); |
284 | EXT (BFD_RELOC_16, 1); | |
252b5132 RH |
285 | EXT (BFD_RELOC_32, 2); |
286 | EXT (BFD_RELOC_HI22, 8); | |
287 | EXT (BFD_RELOC_LO10, 11); | |
288 | EXT (BFD_RELOC_32_PCREL_S2, 6); | |
289 | EXT (BFD_RELOC_SPARC_WDISP22, 7); | |
290 | EXT (BFD_RELOC_SPARC13, 10); | |
291 | EXT (BFD_RELOC_SPARC_GOT10, 14); | |
292 | EXT (BFD_RELOC_SPARC_BASE13, 15); | |
293 | EXT (BFD_RELOC_SPARC_GOT13, 15); | |
294 | EXT (BFD_RELOC_SPARC_GOT22, 16); | |
295 | EXT (BFD_RELOC_SPARC_PC10, 17); | |
296 | EXT (BFD_RELOC_SPARC_PC22, 18); | |
297 | EXT (BFD_RELOC_SPARC_WPLT30, 19); | |
298 | EXT (BFD_RELOC_SPARC_REV32, 26); | |
116c20d2 NC |
299 | default: |
300 | return NULL; | |
252b5132 RH |
301 | } |
302 | else | |
f7c33884 | 303 | /* std relocs. */ |
252b5132 RH |
304 | switch (code) |
305 | { | |
2846975a | 306 | STD (BFD_RELOC_8, 0); |
252b5132 RH |
307 | STD (BFD_RELOC_16, 1); |
308 | STD (BFD_RELOC_32, 2); | |
309 | STD (BFD_RELOC_8_PCREL, 4); | |
310 | STD (BFD_RELOC_16_PCREL, 5); | |
311 | STD (BFD_RELOC_32_PCREL, 6); | |
312 | STD (BFD_RELOC_16_BASEREL, 9); | |
313 | STD (BFD_RELOC_32_BASEREL, 10); | |
116c20d2 NC |
314 | default: |
315 | return NULL; | |
252b5132 RH |
316 | } |
317 | } | |
318 | ||
157090f7 AM |
319 | reloc_howto_type * |
320 | NAME (aout, reloc_name_lookup) (bfd *abfd, const char *r_name) | |
321 | { | |
322 | unsigned int i, size; | |
323 | reloc_howto_type *howto_table; | |
324 | ||
325 | if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE) | |
326 | { | |
327 | howto_table = howto_table_ext; | |
328 | size = sizeof (howto_table_ext) / sizeof (howto_table_ext[0]); | |
329 | } | |
330 | else | |
331 | { | |
332 | howto_table = howto_table_std; | |
333 | size = sizeof (howto_table_std) / sizeof (howto_table_std[0]); | |
334 | } | |
335 | ||
336 | for (i = 0; i < size; i++) | |
337 | if (howto_table[i].name != NULL | |
338 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
339 | return &howto_table[i]; | |
340 | ||
341 | return NULL; | |
342 | } | |
343 | ||
252b5132 RH |
344 | /* |
345 | SUBSECTION | |
346 | Internal entry points | |
347 | ||
348 | DESCRIPTION | |
349 | @file{aoutx.h} exports several routines for accessing the | |
350 | contents of an a.out file, which are gathered and exported in | |
351 | turn by various format specific files (eg sunos.c). | |
252b5132 RH |
352 | */ |
353 | ||
354 | /* | |
355 | FUNCTION | |
356 | aout_@var{size}_swap_exec_header_in | |
357 | ||
358 | SYNOPSIS | |
359 | void aout_@var{size}_swap_exec_header_in, | |
360 | (bfd *abfd, | |
116c20d2 | 361 | struct external_exec *bytes, |
252b5132 RH |
362 | struct internal_exec *execp); |
363 | ||
364 | DESCRIPTION | |
365 | Swap the information in an executable header @var{raw_bytes} taken | |
366 | from a raw byte stream memory image into the internal exec header | |
367 | structure @var{execp}. | |
368 | */ | |
369 | ||
370 | #ifndef NAME_swap_exec_header_in | |
371 | void | |
116c20d2 NC |
372 | NAME (aout, swap_exec_header_in) (bfd *abfd, |
373 | struct external_exec *bytes, | |
374 | struct internal_exec *execp) | |
252b5132 | 375 | { |
252b5132 RH |
376 | /* The internal_exec structure has some fields that are unused in this |
377 | configuration (IE for i960), so ensure that all such uninitialized | |
378 | fields are zero'd out. There are places where two of these structs | |
0ef5a5bd | 379 | are memcmp'd, and thus the contents do matter. */ |
116c20d2 | 380 | memset ((void *) execp, 0, sizeof (struct internal_exec)); |
252b5132 | 381 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
dc810e39 | 382 | execp->a_info = H_GET_32 (abfd, bytes->e_info); |
252b5132 RH |
383 | execp->a_text = GET_WORD (abfd, bytes->e_text); |
384 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
385 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
386 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
387 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
388 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); | |
389 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
390 | } | |
116c20d2 | 391 | #define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in) |
252b5132 RH |
392 | #endif |
393 | ||
394 | /* | |
395 | FUNCTION | |
396 | aout_@var{size}_swap_exec_header_out | |
397 | ||
398 | SYNOPSIS | |
399 | void aout_@var{size}_swap_exec_header_out | |
400 | (bfd *abfd, | |
401 | struct internal_exec *execp, | |
402 | struct external_exec *raw_bytes); | |
403 | ||
404 | DESCRIPTION | |
405 | Swap the information in an internal exec header structure | |
406 | @var{execp} into the buffer @var{raw_bytes} ready for writing to disk. | |
407 | */ | |
408 | void | |
116c20d2 NC |
409 | NAME (aout, swap_exec_header_out) (bfd *abfd, |
410 | struct internal_exec *execp, | |
411 | struct external_exec *bytes) | |
252b5132 | 412 | { |
0ef5a5bd | 413 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ |
dc810e39 | 414 | H_PUT_32 (abfd, execp->a_info , bytes->e_info); |
252b5132 RH |
415 | PUT_WORD (abfd, execp->a_text , bytes->e_text); |
416 | PUT_WORD (abfd, execp->a_data , bytes->e_data); | |
417 | PUT_WORD (abfd, execp->a_bss , bytes->e_bss); | |
418 | PUT_WORD (abfd, execp->a_syms , bytes->e_syms); | |
419 | PUT_WORD (abfd, execp->a_entry , bytes->e_entry); | |
420 | PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); | |
421 | PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); | |
422 | } | |
423 | ||
424 | /* Make all the section for an a.out file. */ | |
425 | ||
b34976b6 | 426 | bfd_boolean |
116c20d2 | 427 | NAME (aout, make_sections) (bfd *abfd) |
252b5132 | 428 | { |
116c20d2 | 429 | if (obj_textsec (abfd) == NULL && bfd_make_section (abfd, ".text") == NULL) |
b34976b6 | 430 | return FALSE; |
116c20d2 | 431 | if (obj_datasec (abfd) == NULL && bfd_make_section (abfd, ".data") == NULL) |
b34976b6 | 432 | return FALSE; |
116c20d2 | 433 | if (obj_bsssec (abfd) == NULL && bfd_make_section (abfd, ".bss") == NULL) |
b34976b6 AM |
434 | return FALSE; |
435 | return TRUE; | |
252b5132 RH |
436 | } |
437 | ||
438 | /* | |
439 | FUNCTION | |
440 | aout_@var{size}_some_aout_object_p | |
441 | ||
442 | SYNOPSIS | |
443 | const bfd_target *aout_@var{size}_some_aout_object_p | |
444 | (bfd *abfd, | |
116c20d2 NC |
445 | struct internal_exec *execp, |
446 | const bfd_target *(*callback_to_real_object_p) (bfd *)); | |
252b5132 RH |
447 | |
448 | DESCRIPTION | |
449 | Some a.out variant thinks that the file open in @var{abfd} | |
450 | checking is an a.out file. Do some more checking, and set up | |
451 | for access if it really is. Call back to the calling | |
452 | environment's "finish up" function just before returning, to | |
453 | handle any last-minute setup. | |
454 | */ | |
455 | ||
456 | const bfd_target * | |
116c20d2 NC |
457 | NAME (aout, some_aout_object_p) (bfd *abfd, |
458 | struct internal_exec *execp, | |
459 | const bfd_target *(*callback_to_real_object_p) (bfd *)) | |
252b5132 RH |
460 | { |
461 | struct aout_data_struct *rawptr, *oldrawptr; | |
462 | const bfd_target *result; | |
116c20d2 | 463 | bfd_size_type amt = sizeof (* rawptr); |
252b5132 | 464 | |
a50b1753 | 465 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt); |
252b5132 | 466 | if (rawptr == NULL) |
116c20d2 | 467 | return NULL; |
252b5132 RH |
468 | |
469 | oldrawptr = abfd->tdata.aout_data; | |
470 | abfd->tdata.aout_data = rawptr; | |
471 | ||
472 | /* Copy the contents of the old tdata struct. | |
473 | In particular, we want the subformat, since for hpux it was set in | |
474 | hp300hpux.c:swap_exec_header_in and will be used in | |
475 | hp300hpux.c:callback. */ | |
476 | if (oldrawptr != NULL) | |
477 | *abfd->tdata.aout_data = *oldrawptr; | |
478 | ||
479 | abfd->tdata.aout_data->a.hdr = &rawptr->e; | |
f7c33884 NC |
480 | /* Copy in the internal_exec struct. */ |
481 | *(abfd->tdata.aout_data->a.hdr) = *execp; | |
252b5132 RH |
482 | execp = abfd->tdata.aout_data->a.hdr; |
483 | ||
f7c33884 | 484 | /* Set the file flags. */ |
252b5132 RH |
485 | abfd->flags = BFD_NO_FLAGS; |
486 | if (execp->a_drsize || execp->a_trsize) | |
487 | abfd->flags |= HAS_RELOC; | |
f7c33884 | 488 | /* Setting of EXEC_P has been deferred to the bottom of this function. */ |
252b5132 RH |
489 | if (execp->a_syms) |
490 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
bbb1afc8 | 491 | if (N_DYNAMIC (execp)) |
252b5132 RH |
492 | abfd->flags |= DYNAMIC; |
493 | ||
bbb1afc8 | 494 | if (N_MAGIC (execp) == ZMAGIC) |
252b5132 RH |
495 | { |
496 | abfd->flags |= D_PAGED | WP_TEXT; | |
497 | adata (abfd).magic = z_magic; | |
498 | } | |
bbb1afc8 | 499 | else if (N_MAGIC (execp) == QMAGIC) |
252b5132 RH |
500 | { |
501 | abfd->flags |= D_PAGED | WP_TEXT; | |
502 | adata (abfd).magic = z_magic; | |
503 | adata (abfd).subformat = q_magic_format; | |
504 | } | |
bbb1afc8 | 505 | else if (N_MAGIC (execp) == NMAGIC) |
252b5132 RH |
506 | { |
507 | abfd->flags |= WP_TEXT; | |
508 | adata (abfd).magic = n_magic; | |
509 | } | |
bbb1afc8 AM |
510 | else if (N_MAGIC (execp) == OMAGIC |
511 | || N_MAGIC (execp) == BMAGIC) | |
252b5132 RH |
512 | adata (abfd).magic = o_magic; |
513 | else | |
116c20d2 NC |
514 | /* Should have been checked with N_BADMAG before this routine |
515 | was called. */ | |
516 | abort (); | |
252b5132 RH |
517 | |
518 | bfd_get_start_address (abfd) = execp->a_entry; | |
519 | ||
116c20d2 | 520 | obj_aout_symbols (abfd) = NULL; |
252b5132 RH |
521 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); |
522 | ||
523 | /* The default relocation entry size is that of traditional V7 Unix. */ | |
524 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
525 | ||
0ef5a5bd | 526 | /* The default symbol entry size is that of traditional Unix. */ |
252b5132 RH |
527 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; |
528 | ||
529 | #ifdef USE_MMAP | |
530 | bfd_init_window (&obj_aout_sym_window (abfd)); | |
531 | bfd_init_window (&obj_aout_string_window (abfd)); | |
532 | #endif | |
533 | obj_aout_external_syms (abfd) = NULL; | |
534 | obj_aout_external_strings (abfd) = NULL; | |
535 | obj_aout_sym_hashes (abfd) = NULL; | |
536 | ||
116c20d2 | 537 | if (! NAME (aout, make_sections) (abfd)) |
487e54f2 | 538 | goto error_ret; |
252b5132 | 539 | |
eea6121a AM |
540 | obj_datasec (abfd)->size = execp->a_data; |
541 | obj_bsssec (abfd)->size = execp->a_bss; | |
252b5132 RH |
542 | |
543 | obj_textsec (abfd)->flags = | |
544 | (execp->a_trsize != 0 | |
545 | ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) | |
546 | : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); | |
547 | obj_datasec (abfd)->flags = | |
548 | (execp->a_drsize != 0 | |
549 | ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) | |
550 | : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); | |
551 | obj_bsssec (abfd)->flags = SEC_ALLOC; | |
552 | ||
553 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
554 | /* The common code can't fill in these things because they depend | |
555 | on either the start address of the text segment, the rounding | |
556 | up of virtual addresses between segments, or the starting file | |
557 | position of the text segment -- all of which varies among different | |
558 | versions of a.out. */ | |
559 | ||
560 | /* Call back to the format-dependent code to fill in the rest of the | |
561 | fields and do any further cleanup. Things that should be filled | |
562 | in by the callback: */ | |
563 | ||
564 | struct exec *execp = exec_hdr (abfd); | |
565 | ||
bbb1afc8 | 566 | obj_textsec (abfd)->size = N_TXTSIZE (execp); |
f7c33884 | 567 | /* Data and bss are already filled in since they're so standard. */ |
252b5132 | 568 | |
f7c33884 | 569 | /* The virtual memory addresses of the sections. */ |
bbb1afc8 AM |
570 | obj_textsec (abfd)->vma = N_TXTADDR (execp); |
571 | obj_datasec (abfd)->vma = N_DATADDR (execp); | |
572 | obj_bsssec (abfd)->vma = N_BSSADDR (execp); | |
252b5132 | 573 | |
f7c33884 | 574 | /* The file offsets of the sections. */ |
bbb1afc8 AM |
575 | obj_textsec (abfd)->filepos = N_TXTOFF (execp); |
576 | obj_datasec (abfd)->filepos = N_DATOFF (execp); | |
252b5132 | 577 | |
f7c33884 | 578 | /* The file offsets of the relocation info. */ |
bbb1afc8 AM |
579 | obj_textsec (abfd)->rel_filepos = N_TRELOFF (execp); |
580 | obj_datasec (abfd)->rel_filepos = N_DRELOFF (execp); | |
252b5132 RH |
581 | |
582 | /* The file offsets of the string table and symbol table. */ | |
bbb1afc8 AM |
583 | obj_str_filepos (abfd) = N_STROFF (execp); |
584 | obj_sym_filepos (abfd) = N_SYMOFF (execp); | |
252b5132 RH |
585 | |
586 | /* Determine the architecture and machine type of the object file. */ | |
bbb1afc8 | 587 | switch (N_MACHTYPE (exec_hdr (abfd))) |
923f08ff AM |
588 | { |
589 | default: | |
590 | abfd->obj_arch = bfd_arch_obscure; | |
591 | break; | |
592 | } | |
252b5132 | 593 | |
923f08ff AM |
594 | adata (abfd)->page_size = TARGET_PAGE_SIZE; |
595 | adata (abfd)->segment_size = SEGMENT_SIZE; | |
596 | adata (abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
252b5132 RH |
597 | |
598 | return abfd->xvec; | |
599 | ||
600 | /* The architecture is encoded in various ways in various a.out variants, | |
601 | or is not encoded at all in some of them. The relocation size depends | |
602 | on the architecture and the a.out variant. Finally, the return value | |
603 | is the bfd_target vector in use. If an error occurs, return zero and | |
604 | set bfd_error to the appropriate error code. | |
605 | ||
606 | Formats such as b.out, which have additional fields in the a.out | |
607 | header, should cope with them in this callback as well. */ | |
608 | #endif /* DOCUMENTATION */ | |
609 | ||
beb0d161 | 610 | result = (*callback_to_real_object_p) (abfd); |
252b5132 RH |
611 | |
612 | /* Now that the segment addresses have been worked out, take a better | |
613 | guess at whether the file is executable. If the entry point | |
614 | is within the text segment, assume it is. (This makes files | |
615 | executable even if their entry point address is 0, as long as | |
616 | their text starts at zero.). | |
617 | ||
618 | This test had to be changed to deal with systems where the text segment | |
619 | runs at a different location than the default. The problem is that the | |
620 | entry address can appear to be outside the text segment, thus causing an | |
621 | erroneous conclusion that the file isn't executable. | |
622 | ||
623 | To fix this, we now accept any non-zero entry point as an indication of | |
624 | executability. This will work most of the time, since only the linker | |
0ef5a5bd | 625 | sets the entry point, and that is likely to be non-zero for most systems. */ |
252b5132 RH |
626 | |
627 | if (execp->a_entry != 0 | |
923f08ff AM |
628 | || (execp->a_entry >= obj_textsec (abfd)->vma |
629 | && execp->a_entry < (obj_textsec (abfd)->vma | |
4c1534c7 AM |
630 | + obj_textsec (abfd)->size) |
631 | && execp->a_trsize == 0 | |
632 | && execp->a_drsize == 0)) | |
252b5132 RH |
633 | abfd->flags |= EXEC_P; |
634 | #ifdef STAT_FOR_EXEC | |
635 | else | |
636 | { | |
637 | struct stat stat_buf; | |
638 | ||
639 | /* The original heuristic doesn't work in some important cases. | |
640 | The a.out file has no information about the text start | |
641 | address. For files (like kernels) linked to non-standard | |
642 | addresses (ld -Ttext nnn) the entry point may not be between | |
643 | the default text start (obj_textsec(abfd)->vma) and | |
644 | (obj_textsec(abfd)->vma) + text size. This is not just a mach | |
645 | issue. Many kernels are loaded at non standard addresses. */ | |
646 | if (abfd->iostream != NULL | |
647 | && (abfd->flags & BFD_IN_MEMORY) == 0 | |
923f08ff | 648 | && (fstat (fileno ((FILE *) (abfd->iostream)), &stat_buf) == 0) |
252b5132 RH |
649 | && ((stat_buf.st_mode & 0111) != 0)) |
650 | abfd->flags |= EXEC_P; | |
651 | } | |
652 | #endif /* STAT_FOR_EXEC */ | |
653 | ||
654 | if (result) | |
0e71e495 | 655 | return result; |
487e54f2 AM |
656 | |
657 | error_ret: | |
658 | bfd_release (abfd, rawptr); | |
659 | abfd->tdata.aout_data = oldrawptr; | |
660 | return NULL; | |
252b5132 RH |
661 | } |
662 | ||
663 | /* | |
664 | FUNCTION | |
665 | aout_@var{size}_mkobject | |
666 | ||
667 | SYNOPSIS | |
b34976b6 | 668 | bfd_boolean aout_@var{size}_mkobject, (bfd *abfd); |
252b5132 RH |
669 | |
670 | DESCRIPTION | |
671 | Initialize BFD @var{abfd} for use with a.out files. | |
672 | */ | |
673 | ||
b34976b6 | 674 | bfd_boolean |
116c20d2 | 675 | NAME (aout, mkobject) (bfd *abfd) |
252b5132 | 676 | { |
dc810e39 | 677 | struct aout_data_struct *rawptr; |
116c20d2 | 678 | bfd_size_type amt = sizeof (* rawptr); |
252b5132 RH |
679 | |
680 | bfd_set_error (bfd_error_system_call); | |
681 | ||
a50b1753 | 682 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt); |
252b5132 | 683 | if (rawptr == NULL) |
b34976b6 | 684 | return FALSE; |
252b5132 RH |
685 | |
686 | abfd->tdata.aout_data = rawptr; | |
687 | exec_hdr (abfd) = &(rawptr->e); | |
688 | ||
116c20d2 NC |
689 | obj_textsec (abfd) = NULL; |
690 | obj_datasec (abfd) = NULL; | |
691 | obj_bsssec (abfd) = NULL; | |
252b5132 | 692 | |
b34976b6 | 693 | return TRUE; |
252b5132 RH |
694 | } |
695 | ||
252b5132 RH |
696 | /* |
697 | FUNCTION | |
698 | aout_@var{size}_machine_type | |
699 | ||
700 | SYNOPSIS | |
701 | enum machine_type aout_@var{size}_machine_type | |
702 | (enum bfd_architecture arch, | |
116c20d2 NC |
703 | unsigned long machine, |
704 | bfd_boolean *unknown); | |
252b5132 RH |
705 | |
706 | DESCRIPTION | |
707 | Keep track of machine architecture and machine type for | |
708 | a.out's. Return the <<machine_type>> for a particular | |
709 | architecture and machine, or <<M_UNKNOWN>> if that exact architecture | |
710 | and machine can't be represented in a.out format. | |
711 | ||
712 | If the architecture is understood, machine type 0 (default) | |
713 | is always understood. | |
714 | */ | |
715 | ||
716 | enum machine_type | |
116c20d2 NC |
717 | NAME (aout, machine_type) (enum bfd_architecture arch, |
718 | unsigned long machine, | |
719 | bfd_boolean *unknown) | |
252b5132 RH |
720 | { |
721 | enum machine_type arch_flags; | |
722 | ||
723 | arch_flags = M_UNKNOWN; | |
b34976b6 | 724 | *unknown = TRUE; |
252b5132 | 725 | |
923f08ff AM |
726 | switch (arch) |
727 | { | |
728 | case bfd_arch_sparc: | |
729 | if (machine == 0 | |
730 | || machine == bfd_mach_sparc | |
731 | || machine == bfd_mach_sparc_sparclite | |
732 | || machine == bfd_mach_sparc_sparclite_le | |
74d26813 L |
733 | || machine == bfd_mach_sparc_v8plus |
734 | || machine == bfd_mach_sparc_v8plusa | |
735 | || machine == bfd_mach_sparc_v8plusb | |
4f26fb3a JM |
736 | || machine == bfd_mach_sparc_v8plusc |
737 | || machine == bfd_mach_sparc_v8plusd | |
738 | || machine == bfd_mach_sparc_v8pluse | |
739 | || machine == bfd_mach_sparc_v8plusv | |
740 | || machine == bfd_mach_sparc_v8plusm | |
64517994 | 741 | || machine == bfd_mach_sparc_v8plusm8 |
74d26813 L |
742 | || machine == bfd_mach_sparc_v9 |
743 | || machine == bfd_mach_sparc_v9a | |
4f26fb3a JM |
744 | || machine == bfd_mach_sparc_v9b |
745 | || machine == bfd_mach_sparc_v9c | |
746 | || machine == bfd_mach_sparc_v9d | |
747 | || machine == bfd_mach_sparc_v9e | |
748 | || machine == bfd_mach_sparc_v9v | |
64517994 JM |
749 | || machine == bfd_mach_sparc_v9m |
750 | || machine == bfd_mach_sparc_v9m8) | |
923f08ff AM |
751 | arch_flags = M_SPARC; |
752 | else if (machine == bfd_mach_sparc_sparclet) | |
753 | arch_flags = M_SPARCLET; | |
754 | break; | |
755 | ||
756 | case bfd_arch_m68k: | |
757 | switch (machine) | |
758 | { | |
759 | case 0: arch_flags = M_68010; break; | |
b34976b6 | 760 | case bfd_mach_m68000: arch_flags = M_UNKNOWN; *unknown = FALSE; break; |
923f08ff AM |
761 | case bfd_mach_m68010: arch_flags = M_68010; break; |
762 | case bfd_mach_m68020: arch_flags = M_68020; break; | |
763 | default: arch_flags = M_UNKNOWN; break; | |
764 | } | |
252b5132 | 765 | break; |
923f08ff AM |
766 | |
767 | case bfd_arch_i386: | |
3b77b1d5 AM |
768 | if (machine == 0 |
769 | || machine == bfd_mach_i386_i386 | |
770 | || machine == bfd_mach_i386_i386_intel_syntax) | |
923f08ff | 771 | arch_flags = M_386; |
252b5132 | 772 | break; |
923f08ff | 773 | |
923f08ff AM |
774 | case bfd_arch_arm: |
775 | if (machine == 0) | |
776 | arch_flags = M_ARM; | |
252b5132 | 777 | break; |
252b5132 | 778 | |
923f08ff AM |
779 | case bfd_arch_mips: |
780 | switch (machine) | |
781 | { | |
782 | case 0: | |
783 | case bfd_mach_mips3000: | |
784 | case bfd_mach_mips3900: | |
785 | arch_flags = M_MIPS1; | |
786 | break; | |
787 | case bfd_mach_mips6000: | |
788 | arch_flags = M_MIPS2; | |
789 | break; | |
790 | case bfd_mach_mips4000: | |
791 | case bfd_mach_mips4010: | |
792 | case bfd_mach_mips4100: | |
793 | case bfd_mach_mips4300: | |
794 | case bfd_mach_mips4400: | |
795 | case bfd_mach_mips4600: | |
796 | case bfd_mach_mips4650: | |
797 | case bfd_mach_mips8000: | |
0d2e43ed | 798 | case bfd_mach_mips9000: |
923f08ff AM |
799 | case bfd_mach_mips10000: |
800 | case bfd_mach_mips12000: | |
3aa3176b TS |
801 | case bfd_mach_mips14000: |
802 | case bfd_mach_mips16000: | |
923f08ff AM |
803 | case bfd_mach_mips16: |
804 | case bfd_mach_mipsisa32: | |
af7ee8bf | 805 | case bfd_mach_mipsisa32r2: |
ae52f483 AB |
806 | case bfd_mach_mipsisa32r3: |
807 | case bfd_mach_mipsisa32r5: | |
7361da2c | 808 | case bfd_mach_mipsisa32r6: |
923f08ff AM |
809 | case bfd_mach_mips5: |
810 | case bfd_mach_mipsisa64: | |
5f74bc13 | 811 | case bfd_mach_mipsisa64r2: |
ae52f483 AB |
812 | case bfd_mach_mipsisa64r3: |
813 | case bfd_mach_mipsisa64r5: | |
7361da2c | 814 | case bfd_mach_mipsisa64r6: |
923f08ff | 815 | case bfd_mach_mips_sb1: |
52b6b6b9 | 816 | case bfd_mach_mips_xlr: |
923f08ff AM |
817 | /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */ |
818 | arch_flags = M_MIPS2; | |
819 | break; | |
820 | default: | |
821 | arch_flags = M_UNKNOWN; | |
822 | break; | |
823 | } | |
824 | break; | |
825 | ||
826 | case bfd_arch_ns32k: | |
827 | switch (machine) | |
828 | { | |
829 | case 0: arch_flags = M_NS32532; break; | |
830 | case 32032: arch_flags = M_NS32032; break; | |
831 | case 32532: arch_flags = M_NS32532; break; | |
832 | default: arch_flags = M_UNKNOWN; break; | |
833 | } | |
834 | break; | |
252b5132 | 835 | |
923f08ff | 836 | case bfd_arch_vax: |
b34976b6 | 837 | *unknown = FALSE; |
923f08ff | 838 | break; |
06c15ad7 | 839 | |
923f08ff AM |
840 | case bfd_arch_cris: |
841 | if (machine == 0 || machine == 255) | |
842 | arch_flags = M_CRIS; | |
843 | break; | |
844 | ||
727e493d MK |
845 | case bfd_arch_m88k: |
846 | *unknown = FALSE; | |
847 | break; | |
848 | ||
923f08ff AM |
849 | default: |
850 | arch_flags = M_UNKNOWN; | |
851 | } | |
252b5132 RH |
852 | |
853 | if (arch_flags != M_UNKNOWN) | |
b34976b6 | 854 | *unknown = FALSE; |
252b5132 RH |
855 | |
856 | return arch_flags; | |
857 | } | |
858 | ||
252b5132 RH |
859 | /* |
860 | FUNCTION | |
861 | aout_@var{size}_set_arch_mach | |
862 | ||
863 | SYNOPSIS | |
b34976b6 | 864 | bfd_boolean aout_@var{size}_set_arch_mach, |
252b5132 RH |
865 | (bfd *, |
866 | enum bfd_architecture arch, | |
116c20d2 | 867 | unsigned long machine); |
252b5132 RH |
868 | |
869 | DESCRIPTION | |
870 | Set the architecture and the machine of the BFD @var{abfd} to the | |
871 | values @var{arch} and @var{machine}. Verify that @var{abfd}'s format | |
872 | can support the architecture required. | |
873 | */ | |
874 | ||
b34976b6 | 875 | bfd_boolean |
116c20d2 NC |
876 | NAME (aout, set_arch_mach) (bfd *abfd, |
877 | enum bfd_architecture arch, | |
878 | unsigned long machine) | |
252b5132 RH |
879 | { |
880 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) | |
b34976b6 | 881 | return FALSE; |
252b5132 RH |
882 | |
883 | if (arch != bfd_arch_unknown) | |
884 | { | |
b34976b6 | 885 | bfd_boolean unknown; |
252b5132 | 886 | |
116c20d2 | 887 | NAME (aout, machine_type) (arch, machine, &unknown); |
252b5132 | 888 | if (unknown) |
b34976b6 | 889 | return FALSE; |
252b5132 RH |
890 | } |
891 | ||
f7c33884 | 892 | /* Determine the size of a relocation entry. */ |
923f08ff AM |
893 | switch (arch) |
894 | { | |
895 | case bfd_arch_sparc: | |
923f08ff AM |
896 | case bfd_arch_mips: |
897 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; | |
898 | break; | |
899 | default: | |
900 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
901 | break; | |
902 | } | |
252b5132 | 903 | |
923f08ff | 904 | return (*aout_backend_info (abfd)->set_sizes) (abfd); |
252b5132 RH |
905 | } |
906 | ||
907 | static void | |
116c20d2 | 908 | adjust_o_magic (bfd *abfd, struct internal_exec *execp) |
252b5132 RH |
909 | { |
910 | file_ptr pos = adata (abfd).exec_bytes_size; | |
911 | bfd_vma vma = 0; | |
912 | int pad = 0; | |
913 | ||
914 | /* Text. */ | |
923f08ff AM |
915 | obj_textsec (abfd)->filepos = pos; |
916 | if (!obj_textsec (abfd)->user_set_vma) | |
917 | obj_textsec (abfd)->vma = vma; | |
252b5132 | 918 | else |
923f08ff | 919 | vma = obj_textsec (abfd)->vma; |
252b5132 | 920 | |
eea6121a AM |
921 | pos += obj_textsec (abfd)->size; |
922 | vma += obj_textsec (abfd)->size; | |
252b5132 RH |
923 | |
924 | /* Data. */ | |
923f08ff | 925 | if (!obj_datasec (abfd)->user_set_vma) |
252b5132 | 926 | { |
eea6121a | 927 | obj_textsec (abfd)->size += pad; |
252b5132 RH |
928 | pos += pad; |
929 | vma += pad; | |
923f08ff | 930 | obj_datasec (abfd)->vma = vma; |
252b5132 RH |
931 | } |
932 | else | |
923f08ff AM |
933 | vma = obj_datasec (abfd)->vma; |
934 | obj_datasec (abfd)->filepos = pos; | |
eea6121a AM |
935 | pos += obj_datasec (abfd)->size; |
936 | vma += obj_datasec (abfd)->size; | |
252b5132 RH |
937 | |
938 | /* BSS. */ | |
923f08ff | 939 | if (!obj_bsssec (abfd)->user_set_vma) |
252b5132 | 940 | { |
eea6121a | 941 | obj_datasec (abfd)->size += pad; |
252b5132 RH |
942 | pos += pad; |
943 | vma += pad; | |
923f08ff | 944 | obj_bsssec (abfd)->vma = vma; |
252b5132 RH |
945 | } |
946 | else | |
947 | { | |
08da05b0 | 948 | /* The VMA of the .bss section is set by the VMA of the |
252b5132 RH |
949 | .data section plus the size of the .data section. We may |
950 | need to add padding bytes to make this true. */ | |
951 | pad = obj_bsssec (abfd)->vma - vma; | |
952 | if (pad > 0) | |
953 | { | |
eea6121a | 954 | obj_datasec (abfd)->size += pad; |
252b5132 RH |
955 | pos += pad; |
956 | } | |
957 | } | |
923f08ff | 958 | obj_bsssec (abfd)->filepos = pos; |
252b5132 RH |
959 | |
960 | /* Fix up the exec header. */ | |
eea6121a AM |
961 | execp->a_text = obj_textsec (abfd)->size; |
962 | execp->a_data = obj_datasec (abfd)->size; | |
963 | execp->a_bss = obj_bsssec (abfd)->size; | |
bbb1afc8 | 964 | N_SET_MAGIC (execp, OMAGIC); |
252b5132 RH |
965 | } |
966 | ||
967 | static void | |
116c20d2 | 968 | adjust_z_magic (bfd *abfd, struct internal_exec *execp) |
252b5132 RH |
969 | { |
970 | bfd_size_type data_pad, text_pad; | |
971 | file_ptr text_end; | |
dc810e39 | 972 | const struct aout_backend_data *abdp; |
116c20d2 NC |
973 | /* TRUE if text includes exec header. */ |
974 | bfd_boolean ztih; | |
0ef5a5bd | 975 | |
252b5132 RH |
976 | abdp = aout_backend_info (abfd); |
977 | ||
978 | /* Text. */ | |
979 | ztih = (abdp != NULL | |
980 | && (abdp->text_includes_header | |
981 | || obj_aout_subformat (abfd) == q_magic_format)); | |
923f08ff AM |
982 | obj_textsec (abfd)->filepos = (ztih |
983 | ? adata (abfd).exec_bytes_size | |
984 | : adata (abfd).zmagic_disk_block_size); | |
985 | if (! obj_textsec (abfd)->user_set_vma) | |
252b5132 RH |
986 | { |
987 | /* ?? Do we really need to check for relocs here? */ | |
923f08ff AM |
988 | obj_textsec (abfd)->vma = ((abfd->flags & HAS_RELOC) |
989 | ? 0 | |
990 | : (ztih | |
991 | ? (abdp->default_text_vma | |
992 | + adata (abfd).exec_bytes_size) | |
993 | : abdp->default_text_vma)); | |
252b5132 RH |
994 | text_pad = 0; |
995 | } | |
996 | else | |
997 | { | |
998 | /* The .text section is being loaded at an unusual address. We | |
999 | may need to pad it such that the .data section starts at a page | |
1000 | boundary. */ | |
1001 | if (ztih) | |
1002 | text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma) | |
1003 | & (adata (abfd).page_size - 1)); | |
1004 | else | |
1005 | text_pad = ((- obj_textsec (abfd)->vma) | |
1006 | & (adata (abfd).page_size - 1)); | |
1007 | } | |
1008 | ||
1009 | /* Find start of data. */ | |
1010 | if (ztih) | |
1011 | { | |
eea6121a | 1012 | text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->size; |
252b5132 RH |
1013 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
1014 | } | |
1015 | else | |
1016 | { | |
1017 | /* Note that if page_size == zmagic_disk_block_size, then | |
1018 | filepos == page_size, and this case is the same as the ztih | |
1019 | case. */ | |
eea6121a | 1020 | text_end = obj_textsec (abfd)->size; |
252b5132 RH |
1021 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
1022 | text_end += obj_textsec (abfd)->filepos; | |
1023 | } | |
eea6121a | 1024 | obj_textsec (abfd)->size += text_pad; |
252b5132 RH |
1025 | text_end += text_pad; |
1026 | ||
1027 | /* Data. */ | |
923f08ff | 1028 | if (!obj_datasec (abfd)->user_set_vma) |
252b5132 RH |
1029 | { |
1030 | bfd_vma vma; | |
eea6121a | 1031 | vma = obj_textsec (abfd)->vma + obj_textsec (abfd)->size; |
923f08ff | 1032 | obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size); |
252b5132 RH |
1033 | } |
1034 | if (abdp && abdp->zmagic_mapped_contiguous) | |
1035 | { | |
dee0a8f4 NC |
1036 | asection * text = obj_textsec (abfd); |
1037 | asection * data = obj_datasec (abfd); | |
1038 | ||
eea6121a | 1039 | text_pad = data->vma - (text->vma + text->size); |
dee0a8f4 NC |
1040 | /* Only pad the text section if the data |
1041 | section is going to be placed after it. */ | |
1042 | if (text_pad > 0) | |
eea6121a | 1043 | text->size += text_pad; |
252b5132 | 1044 | } |
923f08ff | 1045 | obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos |
eea6121a | 1046 | + obj_textsec (abfd)->size); |
0ef5a5bd | 1047 | |
252b5132 | 1048 | /* Fix up exec header while we're at it. */ |
eea6121a | 1049 | execp->a_text = obj_textsec (abfd)->size; |
252b5132 | 1050 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) |
923f08ff | 1051 | execp->a_text += adata (abfd).exec_bytes_size; |
252b5132 | 1052 | if (obj_aout_subformat (abfd) == q_magic_format) |
bbb1afc8 | 1053 | N_SET_MAGIC (execp, QMAGIC); |
252b5132 | 1054 | else |
bbb1afc8 | 1055 | N_SET_MAGIC (execp, ZMAGIC); |
252b5132 RH |
1056 | |
1057 | /* Spec says data section should be rounded up to page boundary. */ | |
eea6121a AM |
1058 | obj_datasec (abfd)->size |
1059 | = align_power (obj_datasec (abfd)->size, | |
923f08ff | 1060 | obj_bsssec (abfd)->alignment_power); |
eea6121a | 1061 | execp->a_data = BFD_ALIGN (obj_datasec (abfd)->size, |
923f08ff | 1062 | adata (abfd).page_size); |
eea6121a | 1063 | data_pad = execp->a_data - obj_datasec (abfd)->size; |
252b5132 RH |
1064 | |
1065 | /* BSS. */ | |
923f08ff AM |
1066 | if (!obj_bsssec (abfd)->user_set_vma) |
1067 | obj_bsssec (abfd)->vma = (obj_datasec (abfd)->vma | |
eea6121a | 1068 | + obj_datasec (abfd)->size); |
252b5132 RH |
1069 | /* If the BSS immediately follows the data section and extra space |
1070 | in the page is left after the data section, fudge data | |
1071 | in the header so that the bss section looks smaller by that | |
1072 | amount. We'll start the bss section there, and lie to the OS. | |
1073 | (Note that a linker script, as well as the above assignment, | |
1074 | could have explicitly set the BSS vma to immediately follow | |
1075 | the data section.) */ | |
923f08ff | 1076 | if (align_power (obj_bsssec (abfd)->vma, obj_bsssec (abfd)->alignment_power) |
eea6121a AM |
1077 | == obj_datasec (abfd)->vma + obj_datasec (abfd)->size) |
1078 | execp->a_bss = (data_pad > obj_bsssec (abfd)->size | |
1079 | ? 0 : obj_bsssec (abfd)->size - data_pad); | |
252b5132 | 1080 | else |
eea6121a | 1081 | execp->a_bss = obj_bsssec (abfd)->size; |
252b5132 RH |
1082 | } |
1083 | ||
1084 | static void | |
116c20d2 | 1085 | adjust_n_magic (bfd *abfd, struct internal_exec *execp) |
252b5132 | 1086 | { |
923f08ff | 1087 | file_ptr pos = adata (abfd).exec_bytes_size; |
252b5132 RH |
1088 | bfd_vma vma = 0; |
1089 | int pad; | |
0ef5a5bd | 1090 | |
252b5132 | 1091 | /* Text. */ |
923f08ff AM |
1092 | obj_textsec (abfd)->filepos = pos; |
1093 | if (!obj_textsec (abfd)->user_set_vma) | |
1094 | obj_textsec (abfd)->vma = vma; | |
252b5132 | 1095 | else |
923f08ff | 1096 | vma = obj_textsec (abfd)->vma; |
eea6121a AM |
1097 | pos += obj_textsec (abfd)->size; |
1098 | vma += obj_textsec (abfd)->size; | |
252b5132 RH |
1099 | |
1100 | /* Data. */ | |
923f08ff AM |
1101 | obj_datasec (abfd)->filepos = pos; |
1102 | if (!obj_datasec (abfd)->user_set_vma) | |
1103 | obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size); | |
1104 | vma = obj_datasec (abfd)->vma; | |
0ef5a5bd | 1105 | |
252b5132 | 1106 | /* Since BSS follows data immediately, see if it needs alignment. */ |
eea6121a | 1107 | vma += obj_datasec (abfd)->size; |
923f08ff | 1108 | pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma; |
eea6121a AM |
1109 | obj_datasec (abfd)->size += pad; |
1110 | pos += obj_datasec (abfd)->size; | |
252b5132 RH |
1111 | |
1112 | /* BSS. */ | |
923f08ff AM |
1113 | if (!obj_bsssec (abfd)->user_set_vma) |
1114 | obj_bsssec (abfd)->vma = vma; | |
252b5132 | 1115 | else |
923f08ff | 1116 | vma = obj_bsssec (abfd)->vma; |
252b5132 RH |
1117 | |
1118 | /* Fix up exec header. */ | |
eea6121a AM |
1119 | execp->a_text = obj_textsec (abfd)->size; |
1120 | execp->a_data = obj_datasec (abfd)->size; | |
1121 | execp->a_bss = obj_bsssec (abfd)->size; | |
bbb1afc8 | 1122 | N_SET_MAGIC (execp, NMAGIC); |
252b5132 RH |
1123 | } |
1124 | ||
b34976b6 | 1125 | bfd_boolean |
3a8c4a5b | 1126 | NAME (aout, adjust_sizes_and_vmas) (bfd *abfd) |
252b5132 RH |
1127 | { |
1128 | struct internal_exec *execp = exec_hdr (abfd); | |
1129 | ||
116c20d2 | 1130 | if (! NAME (aout, make_sections) (abfd)) |
b34976b6 | 1131 | return FALSE; |
252b5132 | 1132 | |
923f08ff | 1133 | if (adata (abfd).magic != undecided_magic) |
b34976b6 | 1134 | return TRUE; |
252b5132 | 1135 | |
eea6121a AM |
1136 | obj_textsec (abfd)->size = |
1137 | align_power (obj_textsec (abfd)->size, | |
923f08ff | 1138 | obj_textsec (abfd)->alignment_power); |
252b5132 | 1139 | |
252b5132 RH |
1140 | /* Rule (heuristic) for when to pad to a new page. Note that there |
1141 | are (at least) two ways demand-paged (ZMAGIC) files have been | |
1142 | handled. Most Berkeley-based systems start the text segment at | |
1143 | (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text | |
1144 | segment right after the exec header; the latter is counted in the | |
1145 | text segment size, and is paged in by the kernel with the rest of | |
0ef5a5bd | 1146 | the text. */ |
252b5132 RH |
1147 | |
1148 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1149 | to understand enough to implement it. Better would probably be to go | |
1150 | right from BFD flags to alignment/positioning characteristics. But the | |
1151 | old code was sloppy enough about handling the flags, and had enough | |
1152 | other magic, that it was a little hard for me to understand. I think | |
1153 | I understand it better now, but I haven't time to do the cleanup this | |
1154 | minute. */ | |
1155 | ||
1156 | if (abfd->flags & D_PAGED) | |
1157 | /* Whether or not WP_TEXT is set -- let D_PAGED override. */ | |
923f08ff | 1158 | adata (abfd).magic = z_magic; |
252b5132 | 1159 | else if (abfd->flags & WP_TEXT) |
923f08ff | 1160 | adata (abfd).magic = n_magic; |
252b5132 | 1161 | else |
923f08ff | 1162 | adata (abfd).magic = o_magic; |
252b5132 RH |
1163 | |
1164 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1165 | #if __GNUC__ >= 2 | |
1166 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1167 | ({ char *str; | |
923f08ff AM |
1168 | switch (adata (abfd).magic) |
1169 | { | |
1170 | case n_magic: str = "NMAGIC"; break; | |
1171 | case o_magic: str = "OMAGIC"; break; | |
1172 | case z_magic: str = "ZMAGIC"; break; | |
1173 | default: abort (); | |
1174 | } | |
252b5132 RH |
1175 | str; |
1176 | }), | |
eea6121a | 1177 | obj_textsec (abfd)->vma, obj_textsec (abfd)->size, |
923f08ff | 1178 | obj_textsec (abfd)->alignment_power, |
eea6121a | 1179 | obj_datasec (abfd)->vma, obj_datasec (abfd)->size, |
923f08ff | 1180 | obj_datasec (abfd)->alignment_power, |
eea6121a | 1181 | obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size, |
923f08ff | 1182 | obj_bsssec (abfd)->alignment_power); |
252b5132 RH |
1183 | #endif |
1184 | #endif | |
1185 | ||
923f08ff | 1186 | switch (adata (abfd).magic) |
252b5132 RH |
1187 | { |
1188 | case o_magic: | |
1189 | adjust_o_magic (abfd, execp); | |
1190 | break; | |
1191 | case z_magic: | |
1192 | adjust_z_magic (abfd, execp); | |
1193 | break; | |
1194 | case n_magic: | |
1195 | adjust_n_magic (abfd, execp); | |
1196 | break; | |
1197 | default: | |
1198 | abort (); | |
1199 | } | |
1200 | ||
1201 | #ifdef BFD_AOUT_DEBUG | |
1202 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
eea6121a | 1203 | obj_textsec (abfd)->vma, obj_textsec (abfd)->size, |
923f08ff | 1204 | obj_textsec (abfd)->filepos, |
eea6121a | 1205 | obj_datasec (abfd)->vma, obj_datasec (abfd)->size, |
923f08ff | 1206 | obj_datasec (abfd)->filepos, |
eea6121a | 1207 | obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size); |
252b5132 RH |
1208 | #endif |
1209 | ||
b34976b6 | 1210 | return TRUE; |
252b5132 RH |
1211 | } |
1212 | ||
1213 | /* | |
1214 | FUNCTION | |
1215 | aout_@var{size}_new_section_hook | |
1216 | ||
1217 | SYNOPSIS | |
b34976b6 | 1218 | bfd_boolean aout_@var{size}_new_section_hook, |
252b5132 | 1219 | (bfd *abfd, |
116c20d2 | 1220 | asection *newsect); |
252b5132 RH |
1221 | |
1222 | DESCRIPTION | |
1223 | Called by the BFD in response to a @code{bfd_make_section} | |
1224 | request. | |
1225 | */ | |
b34976b6 | 1226 | bfd_boolean |
116c20d2 | 1227 | NAME (aout, new_section_hook) (bfd *abfd, asection *newsect) |
252b5132 | 1228 | { |
f7c33884 | 1229 | /* Align to double at least. */ |
923f08ff | 1230 | newsect->alignment_power = bfd_get_arch_info (abfd)->section_align_power; |
252b5132 | 1231 | |
252b5132 | 1232 | if (bfd_get_format (abfd) == bfd_object) |
f7c33884 NC |
1233 | { |
1234 | if (obj_textsec (abfd) == NULL && !strcmp (newsect->name, ".text")) | |
1235 | { | |
1236 | obj_textsec (abfd)= newsect; | |
1237 | newsect->target_index = N_TEXT; | |
f7c33884 | 1238 | } |
f592407e | 1239 | else if (obj_datasec (abfd) == NULL && !strcmp (newsect->name, ".data")) |
f7c33884 NC |
1240 | { |
1241 | obj_datasec (abfd) = newsect; | |
1242 | newsect->target_index = N_DATA; | |
f7c33884 | 1243 | } |
f592407e | 1244 | else if (obj_bsssec (abfd) == NULL && !strcmp (newsect->name, ".bss")) |
f7c33884 NC |
1245 | { |
1246 | obj_bsssec (abfd) = newsect; | |
1247 | newsect->target_index = N_BSS; | |
f7c33884 NC |
1248 | } |
1249 | } | |
252b5132 | 1250 | |
f7c33884 | 1251 | /* We allow more than three sections internally. */ |
f592407e | 1252 | return _bfd_generic_new_section_hook (abfd, newsect); |
252b5132 RH |
1253 | } |
1254 | ||
b34976b6 | 1255 | bfd_boolean |
116c20d2 NC |
1256 | NAME (aout, set_section_contents) (bfd *abfd, |
1257 | sec_ptr section, | |
1258 | const void * location, | |
1259 | file_ptr offset, | |
1260 | bfd_size_type count) | |
252b5132 | 1261 | { |
252b5132 RH |
1262 | if (! abfd->output_has_begun) |
1263 | { | |
3a8c4a5b | 1264 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
b34976b6 | 1265 | return FALSE; |
252b5132 RH |
1266 | } |
1267 | ||
1268 | if (section == obj_bsssec (abfd)) | |
1269 | { | |
1270 | bfd_set_error (bfd_error_no_contents); | |
b34976b6 | 1271 | return FALSE; |
252b5132 RH |
1272 | } |
1273 | ||
1274 | if (section != obj_textsec (abfd) | |
1275 | && section != obj_datasec (abfd)) | |
1276 | { | |
e6af3a53 NC |
1277 | if (aout_section_merge_with_text_p (abfd, section)) |
1278 | section->filepos = obj_textsec (abfd)->filepos + | |
1279 | (section->vma - obj_textsec (abfd)->vma); | |
1280 | else | |
1281 | { | |
4eca0228 | 1282 | _bfd_error_handler |
695344c0 | 1283 | /* xgettext:c-format */ |
dae82561 AM |
1284 | (_("%B: can not represent section `%A' in a.out object file format"), |
1285 | abfd, section); | |
e6af3a53 NC |
1286 | bfd_set_error (bfd_error_nonrepresentable_section); |
1287 | return FALSE; | |
1288 | } | |
252b5132 RH |
1289 | } |
1290 | ||
1291 | if (count != 0) | |
1292 | { | |
1293 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 | |
dc810e39 | 1294 | || bfd_bwrite (location, count, abfd) != count) |
b34976b6 | 1295 | return FALSE; |
252b5132 RH |
1296 | } |
1297 | ||
b34976b6 | 1298 | return TRUE; |
252b5132 RH |
1299 | } |
1300 | \f | |
1301 | /* Read the external symbols from an a.out file. */ | |
1302 | ||
b34976b6 | 1303 | static bfd_boolean |
116c20d2 | 1304 | aout_get_external_symbols (bfd *abfd) |
252b5132 | 1305 | { |
116c20d2 | 1306 | if (obj_aout_external_syms (abfd) == NULL) |
252b5132 RH |
1307 | { |
1308 | bfd_size_type count; | |
1309 | struct external_nlist *syms; | |
7c53fd1c | 1310 | bfd_size_type amt = exec_hdr (abfd)->a_syms; |
252b5132 | 1311 | |
7c53fd1c | 1312 | count = amt / EXTERNAL_NLIST_SIZE; |
6b8f0fd5 MS |
1313 | if (count == 0) |
1314 | return TRUE; /* Nothing to do. */ | |
252b5132 RH |
1315 | |
1316 | #ifdef USE_MMAP | |
7c53fd1c | 1317 | if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), amt, |
b34976b6 AM |
1318 | &obj_aout_sym_window (abfd), TRUE)) |
1319 | return FALSE; | |
252b5132 RH |
1320 | syms = (struct external_nlist *) obj_aout_sym_window (abfd).data; |
1321 | #else | |
1322 | /* We allocate using malloc to make the values easy to free | |
1323 | later on. If we put them on the objalloc it might not be | |
1324 | possible to free them. */ | |
7c53fd1c | 1325 | syms = (struct external_nlist *) bfd_malloc (amt); |
6b8f0fd5 | 1326 | if (syms == NULL) |
b34976b6 | 1327 | return FALSE; |
252b5132 | 1328 | |
7c53fd1c AM |
1329 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 |
1330 | || bfd_bread (syms, amt, abfd) != amt) | |
1331 | { | |
1332 | free (syms); | |
1333 | return FALSE; | |
1334 | } | |
252b5132 RH |
1335 | #endif |
1336 | ||
1337 | obj_aout_external_syms (abfd) = syms; | |
1338 | obj_aout_external_sym_count (abfd) = count; | |
1339 | } | |
0ef5a5bd | 1340 | |
252b5132 RH |
1341 | if (obj_aout_external_strings (abfd) == NULL |
1342 | && exec_hdr (abfd)->a_syms != 0) | |
1343 | { | |
1344 | unsigned char string_chars[BYTES_IN_WORD]; | |
1345 | bfd_size_type stringsize; | |
1346 | char *strings; | |
dc810e39 | 1347 | bfd_size_type amt = BYTES_IN_WORD; |
252b5132 RH |
1348 | |
1349 | /* Get the size of the strings. */ | |
1350 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
116c20d2 | 1351 | || bfd_bread ((void *) string_chars, amt, abfd) != amt) |
b34976b6 | 1352 | return FALSE; |
252b5132 | 1353 | stringsize = GET_WORD (abfd, string_chars); |
0301ce14 AM |
1354 | if (stringsize == 0) |
1355 | stringsize = 1; | |
1356 | else if (stringsize < BYTES_IN_WORD | |
1357 | || (size_t) stringsize != stringsize) | |
1358 | { | |
1359 | bfd_set_error (bfd_error_bad_value); | |
1360 | return FALSE; | |
1361 | } | |
252b5132 RH |
1362 | |
1363 | #ifdef USE_MMAP | |
0301ce14 | 1364 | if (stringsize >= BYTES_IN_WORD) |
252b5132 | 1365 | { |
0301ce14 AM |
1366 | if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize, |
1367 | &obj_aout_string_window (abfd), TRUE)) | |
1368 | return FALSE; | |
1369 | strings = (char *) obj_aout_string_window (abfd).data; | |
252b5132 | 1370 | } |
0301ce14 | 1371 | else |
252b5132 | 1372 | #endif |
0301ce14 AM |
1373 | { |
1374 | strings = (char *) bfd_malloc (stringsize); | |
1375 | if (strings == NULL) | |
1376 | return FALSE; | |
1377 | ||
1378 | if (stringsize >= BYTES_IN_WORD) | |
1379 | { | |
1380 | /* Keep the string count in the buffer for convenience | |
1381 | when indexing with e_strx. */ | |
1382 | amt = stringsize - BYTES_IN_WORD; | |
1383 | if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt) | |
1384 | { | |
1385 | free (strings); | |
1386 | return FALSE; | |
1387 | } | |
1388 | } | |
1389 | } | |
252b5132 RH |
1390 | /* Ensure that a zero index yields an empty string. */ |
1391 | strings[0] = '\0'; | |
1392 | ||
1393 | strings[stringsize - 1] = 0; | |
1394 | ||
1395 | obj_aout_external_strings (abfd) = strings; | |
1396 | obj_aout_external_string_size (abfd) = stringsize; | |
1397 | } | |
1398 | ||
b34976b6 | 1399 | return TRUE; |
252b5132 RH |
1400 | } |
1401 | ||
1402 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type | |
1403 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1404 | nlist structure. This function is responsible for setting | |
1405 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
1406 | ||
b34976b6 | 1407 | static bfd_boolean |
116c20d2 | 1408 | translate_from_native_sym_flags (bfd *abfd, aout_symbol_type *cache_ptr) |
252b5132 RH |
1409 | { |
1410 | flagword visible; | |
1411 | ||
1412 | if ((cache_ptr->type & N_STAB) != 0 | |
1413 | || cache_ptr->type == N_FN) | |
1414 | { | |
1415 | asection *sec; | |
1416 | ||
1417 | /* This is a debugging symbol. */ | |
252b5132 RH |
1418 | cache_ptr->symbol.flags = BSF_DEBUGGING; |
1419 | ||
1420 | /* Work out the symbol section. */ | |
1421 | switch (cache_ptr->type & N_TYPE) | |
1422 | { | |
1423 | case N_TEXT: | |
1424 | case N_FN: | |
1425 | sec = obj_textsec (abfd); | |
1426 | break; | |
1427 | case N_DATA: | |
1428 | sec = obj_datasec (abfd); | |
1429 | break; | |
1430 | case N_BSS: | |
1431 | sec = obj_bsssec (abfd); | |
1432 | break; | |
1433 | default: | |
1434 | case N_ABS: | |
1435 | sec = bfd_abs_section_ptr; | |
1436 | break; | |
1437 | } | |
1438 | ||
1439 | cache_ptr->symbol.section = sec; | |
1440 | cache_ptr->symbol.value -= sec->vma; | |
1441 | ||
b34976b6 | 1442 | return TRUE; |
252b5132 RH |
1443 | } |
1444 | ||
1445 | /* Get the default visibility. This does not apply to all types, so | |
1446 | we just hold it in a local variable to use if wanted. */ | |
1447 | if ((cache_ptr->type & N_EXT) == 0) | |
1448 | visible = BSF_LOCAL; | |
1449 | else | |
1450 | visible = BSF_GLOBAL; | |
1451 | ||
1452 | switch (cache_ptr->type) | |
1453 | { | |
1454 | default: | |
1455 | case N_ABS: case N_ABS | N_EXT: | |
1456 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1457 | cache_ptr->symbol.flags = visible; | |
1458 | break; | |
1459 | ||
1460 | case N_UNDF | N_EXT: | |
1461 | if (cache_ptr->symbol.value != 0) | |
1462 | { | |
1463 | /* This is a common symbol. */ | |
1464 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
1465 | cache_ptr->symbol.section = bfd_com_section_ptr; | |
1466 | } | |
1467 | else | |
1468 | { | |
1469 | cache_ptr->symbol.flags = 0; | |
1470 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1471 | } | |
1472 | break; | |
1473 | ||
1474 | case N_TEXT: case N_TEXT | N_EXT: | |
1475 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1476 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1477 | cache_ptr->symbol.flags = visible; | |
1478 | break; | |
1479 | ||
1480 | /* N_SETV symbols used to represent set vectors placed in the | |
1481 | data section. They are no longer generated. Theoretically, | |
1482 | it was possible to extract the entries and combine them with | |
1483 | new ones, although I don't know if that was ever actually | |
1484 | done. Unless that feature is restored, treat them as data | |
1485 | symbols. */ | |
1486 | case N_SETV: case N_SETV | N_EXT: | |
1487 | case N_DATA: case N_DATA | N_EXT: | |
1488 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1489 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1490 | cache_ptr->symbol.flags = visible; | |
1491 | break; | |
1492 | ||
1493 | case N_BSS: case N_BSS | N_EXT: | |
1494 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1495 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1496 | cache_ptr->symbol.flags = visible; | |
1497 | break; | |
1498 | ||
1499 | case N_SETA: case N_SETA | N_EXT: | |
1500 | case N_SETT: case N_SETT | N_EXT: | |
1501 | case N_SETD: case N_SETD | N_EXT: | |
1502 | case N_SETB: case N_SETB | N_EXT: | |
1503 | { | |
1504 | /* This code is no longer needed. It used to be used to make | |
1505 | the linker handle set symbols, but they are now handled in | |
1506 | the add_symbols routine instead. */ | |
252b5132 RH |
1507 | switch (cache_ptr->type & N_TYPE) |
1508 | { | |
1509 | case N_SETA: | |
1510 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1511 | break; | |
1512 | case N_SETT: | |
1513 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1514 | break; | |
1515 | case N_SETD: | |
1516 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1517 | break; | |
1518 | case N_SETB: | |
1519 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1520 | break; | |
1521 | } | |
1522 | ||
1523 | cache_ptr->symbol.flags |= BSF_CONSTRUCTOR; | |
1524 | } | |
1525 | break; | |
1526 | ||
1527 | case N_WARNING: | |
1528 | /* This symbol is the text of a warning message. The next | |
1529 | symbol is the symbol to associate the warning with. If a | |
1530 | reference is made to that symbol, a warning is issued. */ | |
1531 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
1532 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1533 | break; | |
1534 | ||
1535 | case N_INDR: case N_INDR | N_EXT: | |
1536 | /* An indirect symbol. This consists of two symbols in a row. | |
1537 | The first symbol is the name of the indirection. The second | |
1538 | symbol is the name of the target. A reference to the first | |
1539 | symbol becomes a reference to the second. */ | |
1540 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible; | |
1541 | cache_ptr->symbol.section = bfd_ind_section_ptr; | |
1542 | break; | |
1543 | ||
1544 | case N_WEAKU: | |
1545 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1546 | cache_ptr->symbol.flags = BSF_WEAK; | |
1547 | break; | |
1548 | ||
1549 | case N_WEAKA: | |
1550 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1551 | cache_ptr->symbol.flags = BSF_WEAK; | |
1552 | break; | |
1553 | ||
1554 | case N_WEAKT: | |
1555 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1556 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1557 | cache_ptr->symbol.flags = BSF_WEAK; | |
1558 | break; | |
1559 | ||
1560 | case N_WEAKD: | |
1561 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1562 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1563 | cache_ptr->symbol.flags = BSF_WEAK; | |
1564 | break; | |
1565 | ||
1566 | case N_WEAKB: | |
1567 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1568 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1569 | cache_ptr->symbol.flags = BSF_WEAK; | |
1570 | break; | |
1571 | } | |
1572 | ||
b34976b6 | 1573 | return TRUE; |
252b5132 RH |
1574 | } |
1575 | ||
1576 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ | |
1577 | ||
b34976b6 | 1578 | static bfd_boolean |
116c20d2 NC |
1579 | translate_to_native_sym_flags (bfd *abfd, |
1580 | asymbol *cache_ptr, | |
1581 | struct external_nlist *sym_pointer) | |
252b5132 RH |
1582 | { |
1583 | bfd_vma value = cache_ptr->value; | |
1584 | asection *sec; | |
1585 | bfd_vma off; | |
1586 | ||
1587 | /* Mask out any existing type bits in case copying from one section | |
1588 | to another. */ | |
1589 | sym_pointer->e_type[0] &= ~N_TYPE; | |
1590 | ||
1591 | sec = bfd_get_section (cache_ptr); | |
1592 | off = 0; | |
1593 | ||
1594 | if (sec == NULL) | |
1595 | { | |
1596 | /* This case occurs, e.g., for the *DEBUG* section of a COFF | |
1597 | file. */ | |
4eca0228 | 1598 | _bfd_error_handler |
695344c0 | 1599 | /* xgettext:c-format */ |
dae82561 | 1600 | (_("%B: can not represent section for symbol `%s' in a.out " |
4eca0228 | 1601 | "object file format"), |
dae82561 | 1602 | abfd, |
252b5132 RH |
1603 | cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*")); |
1604 | bfd_set_error (bfd_error_nonrepresentable_section); | |
b34976b6 | 1605 | return FALSE; |
252b5132 RH |
1606 | } |
1607 | ||
1608 | if (sec->output_section != NULL) | |
1609 | { | |
1610 | off = sec->output_offset; | |
1611 | sec = sec->output_section; | |
1612 | } | |
1613 | ||
1614 | if (bfd_is_abs_section (sec)) | |
1615 | sym_pointer->e_type[0] |= N_ABS; | |
1616 | else if (sec == obj_textsec (abfd)) | |
1617 | sym_pointer->e_type[0] |= N_TEXT; | |
1618 | else if (sec == obj_datasec (abfd)) | |
1619 | sym_pointer->e_type[0] |= N_DATA; | |
1620 | else if (sec == obj_bsssec (abfd)) | |
1621 | sym_pointer->e_type[0] |= N_BSS; | |
1622 | else if (bfd_is_und_section (sec)) | |
1623 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1624 | else if (bfd_is_ind_section (sec)) | |
1625 | sym_pointer->e_type[0] = N_INDR; | |
1626 | else if (bfd_is_com_section (sec)) | |
1627 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1628 | else | |
1629 | { | |
e6af3a53 NC |
1630 | if (aout_section_merge_with_text_p (abfd, sec)) |
1631 | sym_pointer->e_type[0] |= N_TEXT; | |
1632 | else | |
1633 | { | |
4eca0228 | 1634 | _bfd_error_handler |
695344c0 | 1635 | /* xgettext:c-format */ |
dae82561 AM |
1636 | (_("%B: can not represent section `%A' in a.out object file format"), |
1637 | abfd, sec); | |
e6af3a53 NC |
1638 | bfd_set_error (bfd_error_nonrepresentable_section); |
1639 | return FALSE; | |
1640 | } | |
252b5132 RH |
1641 | } |
1642 | ||
f7c33884 | 1643 | /* Turn the symbol from section relative to absolute again. */ |
252b5132 RH |
1644 | value += sec->vma + off; |
1645 | ||
1646 | if ((cache_ptr->flags & BSF_WARNING) != 0) | |
1647 | sym_pointer->e_type[0] = N_WARNING; | |
1648 | ||
1649 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) | |
1650 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1651 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
1652 | sym_pointer->e_type[0] |= N_EXT; | |
930d924d L |
1653 | else if ((cache_ptr->flags & BSF_LOCAL) != 0) |
1654 | sym_pointer->e_type[0] &= ~N_EXT; | |
252b5132 RH |
1655 | |
1656 | if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0) | |
1657 | { | |
1658 | int type = ((aout_symbol_type *) cache_ptr)->type; | |
f7c33884 | 1659 | |
252b5132 RH |
1660 | switch (type) |
1661 | { | |
1662 | case N_ABS: type = N_SETA; break; | |
1663 | case N_TEXT: type = N_SETT; break; | |
1664 | case N_DATA: type = N_SETD; break; | |
1665 | case N_BSS: type = N_SETB; break; | |
1666 | } | |
1667 | sym_pointer->e_type[0] = type; | |
1668 | } | |
1669 | ||
1670 | if ((cache_ptr->flags & BSF_WEAK) != 0) | |
1671 | { | |
1672 | int type; | |
1673 | ||
1674 | switch (sym_pointer->e_type[0] & N_TYPE) | |
1675 | { | |
1676 | default: | |
1677 | case N_ABS: type = N_WEAKA; break; | |
1678 | case N_TEXT: type = N_WEAKT; break; | |
1679 | case N_DATA: type = N_WEAKD; break; | |
1680 | case N_BSS: type = N_WEAKB; break; | |
1681 | case N_UNDF: type = N_WEAKU; break; | |
1682 | } | |
1683 | sym_pointer->e_type[0] = type; | |
1684 | } | |
1685 | ||
923f08ff | 1686 | PUT_WORD (abfd, value, sym_pointer->e_value); |
252b5132 | 1687 | |
b34976b6 | 1688 | return TRUE; |
252b5132 RH |
1689 | } |
1690 | \f | |
0ef5a5bd | 1691 | /* Native-level interface to symbols. */ |
252b5132 RH |
1692 | |
1693 | asymbol * | |
116c20d2 | 1694 | NAME (aout, make_empty_symbol) (bfd *abfd) |
252b5132 | 1695 | { |
dc810e39 | 1696 | bfd_size_type amt = sizeof (aout_symbol_type); |
116c20d2 | 1697 | |
d3ce72d0 NC |
1698 | aout_symbol_type *new_symbol = (aout_symbol_type *) bfd_zalloc (abfd, amt); |
1699 | if (!new_symbol) | |
252b5132 | 1700 | return NULL; |
d3ce72d0 | 1701 | new_symbol->symbol.the_bfd = abfd; |
252b5132 | 1702 | |
d3ce72d0 | 1703 | return &new_symbol->symbol; |
252b5132 RH |
1704 | } |
1705 | ||
1706 | /* Translate a set of internal symbols into external symbols. */ | |
1707 | ||
b34976b6 | 1708 | bfd_boolean |
116c20d2 NC |
1709 | NAME (aout, translate_symbol_table) (bfd *abfd, |
1710 | aout_symbol_type *in, | |
1711 | struct external_nlist *ext, | |
1712 | bfd_size_type count, | |
1713 | char *str, | |
1714 | bfd_size_type strsize, | |
1715 | bfd_boolean dynamic) | |
252b5132 RH |
1716 | { |
1717 | struct external_nlist *ext_end; | |
1718 | ||
1719 | ext_end = ext + count; | |
1720 | for (; ext < ext_end; ext++, in++) | |
1721 | { | |
1722 | bfd_vma x; | |
1723 | ||
1724 | x = GET_WORD (abfd, ext->e_strx); | |
1725 | in->symbol.the_bfd = abfd; | |
1726 | ||
1727 | /* For the normal symbols, the zero index points at the number | |
1728 | of bytes in the string table but is to be interpreted as the | |
1729 | null string. For the dynamic symbols, the number of bytes in | |
1730 | the string table is stored in the __DYNAMIC structure and the | |
1731 | zero index points at an actual string. */ | |
1732 | if (x == 0 && ! dynamic) | |
1733 | in->symbol.name = ""; | |
1734 | else if (x < strsize) | |
1735 | in->symbol.name = str + x; | |
1736 | else | |
b34976b6 | 1737 | return FALSE; |
252b5132 RH |
1738 | |
1739 | in->symbol.value = GET_SWORD (abfd, ext->e_value); | |
dc810e39 AM |
1740 | in->desc = H_GET_16 (abfd, ext->e_desc); |
1741 | in->other = H_GET_8 (abfd, ext->e_other); | |
1742 | in->type = H_GET_8 (abfd, ext->e_type); | |
252b5132 RH |
1743 | in->symbol.udata.p = NULL; |
1744 | ||
1745 | if (! translate_from_native_sym_flags (abfd, in)) | |
b34976b6 | 1746 | return FALSE; |
252b5132 RH |
1747 | |
1748 | if (dynamic) | |
1749 | in->symbol.flags |= BSF_DYNAMIC; | |
1750 | } | |
1751 | ||
b34976b6 | 1752 | return TRUE; |
252b5132 RH |
1753 | } |
1754 | ||
1755 | /* We read the symbols into a buffer, which is discarded when this | |
1756 | function exits. We read the strings into a buffer large enough to | |
0ef5a5bd | 1757 | hold them all plus all the cached symbol entries. */ |
252b5132 | 1758 | |
b34976b6 | 1759 | bfd_boolean |
116c20d2 | 1760 | NAME (aout, slurp_symbol_table) (bfd *abfd) |
252b5132 RH |
1761 | { |
1762 | struct external_nlist *old_external_syms; | |
1763 | aout_symbol_type *cached; | |
dc810e39 | 1764 | bfd_size_type cached_size; |
252b5132 | 1765 | |
f7c33884 | 1766 | /* If there's no work to be done, don't do any. */ |
116c20d2 | 1767 | if (obj_aout_symbols (abfd) != NULL) |
b34976b6 | 1768 | return TRUE; |
252b5132 RH |
1769 | |
1770 | old_external_syms = obj_aout_external_syms (abfd); | |
1771 | ||
1772 | if (! aout_get_external_symbols (abfd)) | |
b34976b6 | 1773 | return FALSE; |
252b5132 | 1774 | |
dc810e39 | 1775 | cached_size = obj_aout_external_sym_count (abfd); |
87b32780 MS |
1776 | if (cached_size == 0) |
1777 | return TRUE; /* Nothing to do. */ | |
1778 | ||
dc810e39 | 1779 | cached_size *= sizeof (aout_symbol_type); |
a50b1753 | 1780 | cached = (aout_symbol_type *) bfd_zmalloc (cached_size); |
87b32780 | 1781 | if (cached == NULL) |
b34976b6 | 1782 | return FALSE; |
252b5132 RH |
1783 | |
1784 | /* Convert from external symbol information to internal. */ | |
116c20d2 | 1785 | if (! (NAME (aout, translate_symbol_table) |
252b5132 RH |
1786 | (abfd, cached, |
1787 | obj_aout_external_syms (abfd), | |
1788 | obj_aout_external_sym_count (abfd), | |
1789 | obj_aout_external_strings (abfd), | |
1790 | obj_aout_external_string_size (abfd), | |
b34976b6 | 1791 | FALSE))) |
252b5132 RH |
1792 | { |
1793 | free (cached); | |
b34976b6 | 1794 | return FALSE; |
252b5132 RH |
1795 | } |
1796 | ||
1797 | bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd); | |
1798 | ||
1799 | obj_aout_symbols (abfd) = cached; | |
1800 | ||
1801 | /* It is very likely that anybody who calls this function will not | |
1802 | want the external symbol information, so if it was allocated | |
1803 | because of our call to aout_get_external_symbols, we free it up | |
1804 | right away to save space. */ | |
116c20d2 NC |
1805 | if (old_external_syms == NULL |
1806 | && obj_aout_external_syms (abfd) != NULL) | |
252b5132 RH |
1807 | { |
1808 | #ifdef USE_MMAP | |
1809 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
1810 | #else | |
1811 | free (obj_aout_external_syms (abfd)); | |
1812 | #endif | |
1813 | obj_aout_external_syms (abfd) = NULL; | |
1814 | } | |
1815 | ||
b34976b6 | 1816 | return TRUE; |
252b5132 RH |
1817 | } |
1818 | \f | |
1819 | /* We use a hash table when writing out symbols so that we only write | |
1820 | out a particular string once. This helps particularly when the | |
1821 | linker writes out stabs debugging entries, because each different | |
1822 | contributing object file tends to have many duplicate stabs | |
1823 | strings. | |
1824 | ||
1825 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it | |
1826 | if BFD_TRADITIONAL_FORMAT is set. */ | |
1827 | ||
252b5132 RH |
1828 | /* Get the index of a string in a strtab, adding it if it is not |
1829 | already present. */ | |
1830 | ||
116c20d2 NC |
1831 | static inline bfd_size_type |
1832 | add_to_stringtab (bfd *abfd, | |
1833 | struct bfd_strtab_hash *tab, | |
1834 | const char *str, | |
1835 | bfd_boolean copy) | |
252b5132 | 1836 | { |
b34976b6 | 1837 | bfd_boolean hash; |
91d6fa6a | 1838 | bfd_size_type str_index; |
252b5132 RH |
1839 | |
1840 | /* An index of 0 always means the empty string. */ | |
1841 | if (str == 0 || *str == '\0') | |
1842 | return 0; | |
1843 | ||
1844 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx | |
1845 | doesn't understand a hashed string table. */ | |
b34976b6 | 1846 | hash = TRUE; |
252b5132 | 1847 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
b34976b6 | 1848 | hash = FALSE; |
252b5132 | 1849 | |
91d6fa6a | 1850 | str_index = _bfd_stringtab_add (tab, str, hash, copy); |
252b5132 | 1851 | |
91d6fa6a | 1852 | if (str_index != (bfd_size_type) -1) |
116c20d2 NC |
1853 | /* Add BYTES_IN_WORD to the return value to account for the |
1854 | space taken up by the string table size. */ | |
91d6fa6a | 1855 | str_index += BYTES_IN_WORD; |
252b5132 | 1856 | |
91d6fa6a | 1857 | return str_index; |
252b5132 RH |
1858 | } |
1859 | ||
1860 | /* Write out a strtab. ABFD is already at the right location in the | |
1861 | file. */ | |
1862 | ||
b34976b6 | 1863 | static bfd_boolean |
116c20d2 | 1864 | emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab) |
252b5132 RH |
1865 | { |
1866 | bfd_byte buffer[BYTES_IN_WORD]; | |
dc810e39 | 1867 | bfd_size_type amt = BYTES_IN_WORD; |
252b5132 RH |
1868 | |
1869 | /* The string table starts with the size. */ | |
1870 | PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer); | |
116c20d2 | 1871 | if (bfd_bwrite ((void *) buffer, amt, abfd) != amt) |
b34976b6 | 1872 | return FALSE; |
252b5132 RH |
1873 | |
1874 | return _bfd_stringtab_emit (abfd, tab); | |
1875 | } | |
1876 | \f | |
b34976b6 | 1877 | bfd_boolean |
116c20d2 | 1878 | NAME (aout, write_syms) (bfd *abfd) |
252b5132 RH |
1879 | { |
1880 | unsigned int count ; | |
1881 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1882 | struct bfd_strtab_hash *strtab; | |
1883 | ||
1884 | strtab = _bfd_stringtab_init (); | |
1885 | if (strtab == NULL) | |
b34976b6 | 1886 | return FALSE; |
252b5132 RH |
1887 | |
1888 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1889 | { | |
1890 | asymbol *g = generic[count]; | |
1891 | bfd_size_type indx; | |
1892 | struct external_nlist nsp; | |
dc810e39 | 1893 | bfd_size_type amt; |
252b5132 | 1894 | |
b34976b6 | 1895 | indx = add_to_stringtab (abfd, strtab, g->name, FALSE); |
252b5132 RH |
1896 | if (indx == (bfd_size_type) -1) |
1897 | goto error_return; | |
1898 | PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx); | |
1899 | ||
923f08ff | 1900 | if (bfd_asymbol_flavour (g) == abfd->xvec->flavour) |
252b5132 | 1901 | { |
923f08ff AM |
1902 | H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc); |
1903 | H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other); | |
1904 | H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type); | |
252b5132 RH |
1905 | } |
1906 | else | |
1907 | { | |
dc810e39 AM |
1908 | H_PUT_16 (abfd, 0, nsp.e_desc); |
1909 | H_PUT_8 (abfd, 0, nsp.e_other); | |
1910 | H_PUT_8 (abfd, 0, nsp.e_type); | |
252b5132 RH |
1911 | } |
1912 | ||
1913 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) | |
1914 | goto error_return; | |
1915 | ||
dc810e39 | 1916 | amt = EXTERNAL_NLIST_SIZE; |
116c20d2 | 1917 | if (bfd_bwrite ((void *) &nsp, amt, abfd) != amt) |
252b5132 RH |
1918 | goto error_return; |
1919 | ||
1920 | /* NB: `KEEPIT' currently overlays `udata.p', so set this only | |
1921 | here, at the end. */ | |
1922 | g->KEEPIT = count; | |
1923 | } | |
1924 | ||
1925 | if (! emit_stringtab (abfd, strtab)) | |
1926 | goto error_return; | |
1927 | ||
1928 | _bfd_stringtab_free (strtab); | |
1929 | ||
b34976b6 | 1930 | return TRUE; |
252b5132 RH |
1931 | |
1932 | error_return: | |
1933 | _bfd_stringtab_free (strtab); | |
b34976b6 | 1934 | return FALSE; |
252b5132 | 1935 | } |
252b5132 RH |
1936 | \f |
1937 | long | |
116c20d2 | 1938 | NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location) |
252b5132 | 1939 | { |
116c20d2 NC |
1940 | unsigned int counter = 0; |
1941 | aout_symbol_type *symbase; | |
252b5132 | 1942 | |
116c20d2 NC |
1943 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
1944 | return -1; | |
252b5132 | 1945 | |
116c20d2 NC |
1946 | for (symbase = obj_aout_symbols (abfd); |
1947 | counter++ < bfd_get_symcount (abfd); | |
1948 | ) | |
1949 | *(location++) = (asymbol *) (symbase++); | |
1950 | *location++ =0; | |
1951 | return bfd_get_symcount (abfd); | |
252b5132 | 1952 | } |
252b5132 | 1953 | \f |
f7c33884 | 1954 | /* Standard reloc stuff. */ |
0ef5a5bd | 1955 | /* Output standard relocation information to a file in target byte order. */ |
252b5132 | 1956 | |
116c20d2 NC |
1957 | extern void NAME (aout, swap_std_reloc_out) |
1958 | (bfd *, arelent *, struct reloc_std_external *); | |
252b5132 RH |
1959 | |
1960 | void | |
116c20d2 NC |
1961 | NAME (aout, swap_std_reloc_out) (bfd *abfd, |
1962 | arelent *g, | |
1963 | struct reloc_std_external *natptr) | |
252b5132 RH |
1964 | { |
1965 | int r_index; | |
1966 | asymbol *sym = *(g->sym_ptr_ptr); | |
1967 | int r_extern; | |
1968 | unsigned int r_length; | |
1969 | int r_pcrel; | |
1970 | int r_baserel, r_jmptable, r_relative; | |
1971 | asection *output_section = sym->section->output_section; | |
1972 | ||
923f08ff | 1973 | PUT_WORD (abfd, g->address, natptr->r_address); |
252b5132 | 1974 | |
e2996cc3 | 1975 | BFD_ASSERT (g->howto != NULL); |
f7c33884 NC |
1976 | r_length = g->howto->size ; /* Size as a power of two. */ |
1977 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
252b5132 RH |
1978 | /* XXX This relies on relocs coming from a.out files. */ |
1979 | r_baserel = (g->howto->type & 8) != 0; | |
1980 | r_jmptable = (g->howto->type & 16) != 0; | |
1981 | r_relative = (g->howto->type & 32) != 0; | |
1982 | ||
f7c33884 | 1983 | /* Name was clobbered by aout_write_syms to be symbol index. */ |
252b5132 RH |
1984 | |
1985 | /* If this relocation is relative to a symbol then set the | |
1986 | r_index to the symbols index, and the r_extern bit. | |
1987 | ||
1988 | Absolute symbols can come in in two ways, either as an offset | |
1989 | from the abs section, or as a symbol which has an abs value. | |
f7c33884 | 1990 | check for that here. */ |
252b5132 | 1991 | |
252b5132 RH |
1992 | if (bfd_is_com_section (output_section) |
1993 | || bfd_is_abs_section (output_section) | |
22184a77 NC |
1994 | || bfd_is_und_section (output_section) |
1995 | /* PR gas/3041 a.out relocs against weak symbols | |
1996 | must be treated as if they were against externs. */ | |
1997 | || (sym->flags & BSF_WEAK)) | |
252b5132 RH |
1998 | { |
1999 | if (bfd_abs_section_ptr->symbol == sym) | |
f7c33884 NC |
2000 | { |
2001 | /* Whoops, looked like an abs symbol, but is | |
2002 | really an offset from the abs section. */ | |
2003 | r_index = N_ABS; | |
2004 | r_extern = 0; | |
2005 | } | |
252b5132 | 2006 | else |
f7c33884 NC |
2007 | { |
2008 | /* Fill in symbol. */ | |
2009 | r_extern = 1; | |
2010 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
2011 | } | |
252b5132 RH |
2012 | } |
2013 | else | |
2014 | { | |
f7c33884 | 2015 | /* Just an ordinary section. */ |
252b5132 RH |
2016 | r_extern = 0; |
2017 | r_index = output_section->target_index; | |
2018 | } | |
2019 | ||
f7c33884 | 2020 | /* Now the fun stuff. */ |
923f08ff AM |
2021 | if (bfd_header_big_endian (abfd)) |
2022 | { | |
252b5132 RH |
2023 | natptr->r_index[0] = r_index >> 16; |
2024 | natptr->r_index[1] = r_index >> 8; | |
2025 | natptr->r_index[2] = r_index; | |
923f08ff AM |
2026 | natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) |
2027 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
2028 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
2029 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
2030 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
2031 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
2032 | } | |
2033 | else | |
2034 | { | |
2035 | natptr->r_index[2] = r_index >> 16; | |
2036 | natptr->r_index[1] = r_index >> 8; | |
2037 | natptr->r_index[0] = r_index; | |
2038 | natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
2039 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
2040 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
2041 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
2042 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
2043 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
2044 | } | |
252b5132 RH |
2045 | } |
2046 | ||
f7c33884 | 2047 | /* Extended stuff. */ |
0ef5a5bd | 2048 | /* Output extended relocation information to a file in target byte order. */ |
252b5132 | 2049 | |
116c20d2 NC |
2050 | extern void NAME (aout, swap_ext_reloc_out) |
2051 | (bfd *, arelent *, struct reloc_ext_external *); | |
252b5132 RH |
2052 | |
2053 | void | |
116c20d2 NC |
2054 | NAME (aout, swap_ext_reloc_out) (bfd *abfd, |
2055 | arelent *g, | |
2056 | struct reloc_ext_external *natptr) | |
252b5132 RH |
2057 | { |
2058 | int r_index; | |
2059 | int r_extern; | |
2060 | unsigned int r_type; | |
dc810e39 | 2061 | bfd_vma r_addend; |
252b5132 RH |
2062 | asymbol *sym = *(g->sym_ptr_ptr); |
2063 | asection *output_section = sym->section->output_section; | |
2064 | ||
2065 | PUT_WORD (abfd, g->address, natptr->r_address); | |
2066 | ||
2067 | r_type = (unsigned int) g->howto->type; | |
2068 | ||
2069 | r_addend = g->addend; | |
2070 | if ((sym->flags & BSF_SECTION_SYM) != 0) | |
2071 | r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma; | |
2072 | ||
2073 | /* If this relocation is relative to a symbol then set the | |
2074 | r_index to the symbols index, and the r_extern bit. | |
2075 | ||
2076 | Absolute symbols can come in in two ways, either as an offset | |
2077 | from the abs section, or as a symbol which has an abs value. | |
2078 | check for that here. */ | |
252b5132 RH |
2079 | if (bfd_is_abs_section (bfd_get_section (sym))) |
2080 | { | |
2081 | r_extern = 0; | |
2082 | r_index = N_ABS; | |
2083 | } | |
2084 | else if ((sym->flags & BSF_SECTION_SYM) == 0) | |
2085 | { | |
2086 | if (bfd_is_und_section (bfd_get_section (sym)) | |
2087 | || (sym->flags & BSF_GLOBAL) != 0) | |
2088 | r_extern = 1; | |
2089 | else | |
2090 | r_extern = 0; | |
2091 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
2092 | } | |
2093 | else | |
2094 | { | |
f7c33884 | 2095 | /* Just an ordinary section. */ |
252b5132 RH |
2096 | r_extern = 0; |
2097 | r_index = output_section->target_index; | |
2098 | } | |
2099 | ||
f7c33884 | 2100 | /* Now the fun stuff. */ |
923f08ff AM |
2101 | if (bfd_header_big_endian (abfd)) |
2102 | { | |
2103 | natptr->r_index[0] = r_index >> 16; | |
2104 | natptr->r_index[1] = r_index >> 8; | |
2105 | natptr->r_index[2] = r_index; | |
2106 | natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
2107 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
2108 | } | |
2109 | else | |
2110 | { | |
2111 | natptr->r_index[2] = r_index >> 16; | |
2112 | natptr->r_index[1] = r_index >> 8; | |
2113 | natptr->r_index[0] = r_index; | |
2114 | natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
2115 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE)); | |
2116 | } | |
252b5132 RH |
2117 | |
2118 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
2119 | } | |
2120 | ||
2121 | /* BFD deals internally with all things based from the section they're | |
2122 | in. so, something in 10 bytes into a text section with a base of | |
2123 | 50 would have a symbol (.text+10) and know .text vma was 50. | |
2124 | ||
2125 | Aout keeps all it's symbols based from zero, so the symbol would | |
2126 | contain 60. This macro subs the base of each section from the value | |
923f08ff AM |
2127 | to give the true offset from the section. */ |
2128 | ||
2129 | #define MOVE_ADDRESS(ad) \ | |
2130 | if (r_extern) \ | |
2131 | { \ | |
2132 | /* Undefined symbol. */ \ | |
2133 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
252b5132 | 2134 | cache_ptr->addend = ad; \ |
252b5132 | 2135 | } \ |
923f08ff AM |
2136 | else \ |
2137 | { \ | |
2138 | /* Defined, section relative. Replace symbol with pointer to \ | |
2139 | symbol which points to section. */ \ | |
2140 | switch (r_index) \ | |
2141 | { \ | |
2142 | case N_TEXT: \ | |
2143 | case N_TEXT | N_EXT: \ | |
2144 | cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \ | |
2145 | cache_ptr->addend = ad - su->textsec->vma; \ | |
2146 | break; \ | |
2147 | case N_DATA: \ | |
2148 | case N_DATA | N_EXT: \ | |
2149 | cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \ | |
2150 | cache_ptr->addend = ad - su->datasec->vma; \ | |
2151 | break; \ | |
2152 | case N_BSS: \ | |
2153 | case N_BSS | N_EXT: \ | |
2154 | cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \ | |
2155 | cache_ptr->addend = ad - su->bsssec->vma; \ | |
2156 | break; \ | |
2157 | default: \ | |
2158 | case N_ABS: \ | |
2159 | case N_ABS | N_EXT: \ | |
2160 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ | |
2161 | cache_ptr->addend = ad; \ | |
2162 | break; \ | |
2163 | } \ | |
2164 | } | |
252b5132 RH |
2165 | |
2166 | void | |
116c20d2 NC |
2167 | NAME (aout, swap_ext_reloc_in) (bfd *abfd, |
2168 | struct reloc_ext_external *bytes, | |
2169 | arelent *cache_ptr, | |
2170 | asymbol **symbols, | |
2171 | bfd_size_type symcount) | |
252b5132 RH |
2172 | { |
2173 | unsigned int r_index; | |
2174 | int r_extern; | |
2175 | unsigned int r_type; | |
2176 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2177 | ||
2178 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
2179 | ||
f7c33884 | 2180 | /* Now the fun stuff. */ |
923f08ff AM |
2181 | if (bfd_header_big_endian (abfd)) |
2182 | { | |
d45913a0 DA |
2183 | r_index = (((unsigned int) bytes->r_index[0] << 16) |
2184 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2185 | | bytes->r_index[2]); |
2186 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
2187 | r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
2188 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
2189 | } | |
2190 | else | |
2191 | { | |
d45913a0 DA |
2192 | r_index = (((unsigned int) bytes->r_index[2] << 16) |
2193 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2194 | | bytes->r_index[0]); |
2195 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
2196 | r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
2197 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
2198 | } | |
252b5132 | 2199 | |
ad756e3f AM |
2200 | if (r_type < TABLE_SIZE (howto_table_ext)) |
2201 | cache_ptr->howto = howto_table_ext + r_type; | |
2202 | else | |
2203 | cache_ptr->howto = NULL; | |
252b5132 RH |
2204 | |
2205 | /* Base relative relocs are always against the symbol table, | |
2206 | regardless of the setting of r_extern. r_extern just reflects | |
2207 | whether the symbol the reloc is against is local or global. */ | |
d45913a0 DA |
2208 | if (r_type == (unsigned int) RELOC_BASE10 |
2209 | || r_type == (unsigned int) RELOC_BASE13 | |
2210 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
2211 | r_extern = 1; |
2212 | ||
2213 | if (r_extern && r_index > symcount) | |
2214 | { | |
2215 | /* We could arrange to return an error, but it might be useful | |
2216 | to see the file even if it is bad. */ | |
2217 | r_extern = 0; | |
2218 | r_index = N_ABS; | |
2219 | } | |
2220 | ||
923f08ff | 2221 | MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend)); |
252b5132 RH |
2222 | } |
2223 | ||
2224 | void | |
116c20d2 NC |
2225 | NAME (aout, swap_std_reloc_in) (bfd *abfd, |
2226 | struct reloc_std_external *bytes, | |
2227 | arelent *cache_ptr, | |
2228 | asymbol **symbols, | |
2229 | bfd_size_type symcount) | |
252b5132 RH |
2230 | { |
2231 | unsigned int r_index; | |
2232 | int r_extern; | |
2233 | unsigned int r_length; | |
2234 | int r_pcrel; | |
2235 | int r_baserel, r_jmptable, r_relative; | |
2236 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2237 | unsigned int howto_idx; | |
2238 | ||
dc810e39 | 2239 | cache_ptr->address = H_GET_32 (abfd, bytes->r_address); |
252b5132 | 2240 | |
f7c33884 | 2241 | /* Now the fun stuff. */ |
923f08ff AM |
2242 | if (bfd_header_big_endian (abfd)) |
2243 | { | |
d45913a0 DA |
2244 | r_index = (((unsigned int) bytes->r_index[0] << 16) |
2245 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2246 | | bytes->r_index[2]); |
2247 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
2248 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
2249 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
2250 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
2251 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
2252 | r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
2253 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
2254 | } | |
2255 | else | |
2256 | { | |
d45913a0 DA |
2257 | r_index = (((unsigned int) bytes->r_index[2] << 16) |
2258 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2259 | | bytes->r_index[0]); |
2260 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
2261 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
2262 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
2263 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
2264 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
2265 | r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
2266 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
2267 | } | |
252b5132 | 2268 | |
923f08ff AM |
2269 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel |
2270 | + 16 * r_jmptable + 32 * r_relative); | |
ad756e3f AM |
2271 | if (howto_idx < TABLE_SIZE (howto_table_std)) |
2272 | { | |
2273 | cache_ptr->howto = howto_table_std + howto_idx; | |
2274 | if (cache_ptr->howto->type == (unsigned int) -1) | |
2275 | cache_ptr->howto = NULL; | |
2276 | } | |
2277 | else | |
2278 | cache_ptr->howto = NULL; | |
252b5132 RH |
2279 | |
2280 | /* Base relative relocs are always against the symbol table, | |
2281 | regardless of the setting of r_extern. r_extern just reflects | |
2282 | whether the symbol the reloc is against is local or global. */ | |
2283 | if (r_baserel) | |
2284 | r_extern = 1; | |
2285 | ||
2286 | if (r_extern && r_index > symcount) | |
2287 | { | |
2288 | /* We could arrange to return an error, but it might be useful | |
2289 | to see the file even if it is bad. */ | |
2290 | r_extern = 0; | |
2291 | r_index = N_ABS; | |
2292 | } | |
2293 | ||
923f08ff | 2294 | MOVE_ADDRESS (0); |
252b5132 RH |
2295 | } |
2296 | ||
2297 | /* Read and swap the relocs for a section. */ | |
2298 | ||
b34976b6 | 2299 | bfd_boolean |
116c20d2 | 2300 | NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols) |
252b5132 | 2301 | { |
dc810e39 | 2302 | bfd_size_type count; |
252b5132 | 2303 | bfd_size_type reloc_size; |
116c20d2 | 2304 | void * relocs; |
252b5132 RH |
2305 | arelent *reloc_cache; |
2306 | size_t each_size; | |
2307 | unsigned int counter = 0; | |
2308 | arelent *cache_ptr; | |
dc810e39 | 2309 | bfd_size_type amt; |
252b5132 RH |
2310 | |
2311 | if (asect->relocation) | |
b34976b6 | 2312 | return TRUE; |
252b5132 RH |
2313 | |
2314 | if (asect->flags & SEC_CONSTRUCTOR) | |
b34976b6 | 2315 | return TRUE; |
252b5132 RH |
2316 | |
2317 | if (asect == obj_datasec (abfd)) | |
923f08ff | 2318 | reloc_size = exec_hdr (abfd)->a_drsize; |
252b5132 | 2319 | else if (asect == obj_textsec (abfd)) |
923f08ff | 2320 | reloc_size = exec_hdr (abfd)->a_trsize; |
252b5132 RH |
2321 | else if (asect == obj_bsssec (abfd)) |
2322 | reloc_size = 0; | |
2323 | else | |
2324 | { | |
2325 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 2326 | return FALSE; |
252b5132 RH |
2327 | } |
2328 | ||
078c4bfc MS |
2329 | if (reloc_size == 0) |
2330 | return TRUE; /* Nothing to be done. */ | |
2331 | ||
252b5132 | 2332 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) |
b34976b6 | 2333 | return FALSE; |
252b5132 RH |
2334 | |
2335 | each_size = obj_reloc_entry_size (abfd); | |
2336 | ||
2337 | count = reloc_size / each_size; | |
078c4bfc MS |
2338 | if (count == 0) |
2339 | return TRUE; /* Nothing to be done. */ | |
252b5132 | 2340 | |
dc810e39 | 2341 | amt = count * sizeof (arelent); |
a50b1753 | 2342 | reloc_cache = (arelent *) bfd_zmalloc (amt); |
078c4bfc | 2343 | if (reloc_cache == NULL) |
b34976b6 | 2344 | return FALSE; |
252b5132 | 2345 | |
dc810e39 | 2346 | relocs = bfd_malloc (reloc_size); |
078c4bfc | 2347 | if (relocs == NULL) |
252b5132 RH |
2348 | { |
2349 | free (reloc_cache); | |
b34976b6 | 2350 | return FALSE; |
252b5132 RH |
2351 | } |
2352 | ||
dc810e39 | 2353 | if (bfd_bread (relocs, reloc_size, abfd) != reloc_size) |
252b5132 RH |
2354 | { |
2355 | free (relocs); | |
2356 | free (reloc_cache); | |
b34976b6 | 2357 | return FALSE; |
252b5132 RH |
2358 | } |
2359 | ||
2360 | cache_ptr = reloc_cache; | |
2361 | if (each_size == RELOC_EXT_SIZE) | |
2362 | { | |
dc810e39 | 2363 | struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; |
252b5132 RH |
2364 | |
2365 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
1642229e | 2366 | MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols, |
dc810e39 | 2367 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
2368 | } |
2369 | else | |
2370 | { | |
dc810e39 | 2371 | struct reloc_std_external *rptr = (struct reloc_std_external *) relocs; |
252b5132 RH |
2372 | |
2373 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
2374 | MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols, | |
dc810e39 | 2375 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
2376 | } |
2377 | ||
2378 | free (relocs); | |
2379 | ||
2380 | asect->relocation = reloc_cache; | |
2381 | asect->reloc_count = cache_ptr - reloc_cache; | |
2382 | ||
b34976b6 | 2383 | return TRUE; |
252b5132 RH |
2384 | } |
2385 | ||
2386 | /* Write out a relocation section into an object file. */ | |
2387 | ||
b34976b6 | 2388 | bfd_boolean |
116c20d2 | 2389 | NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section) |
252b5132 RH |
2390 | { |
2391 | arelent **generic; | |
2392 | unsigned char *native, *natptr; | |
2393 | size_t each_size; | |
2394 | ||
2395 | unsigned int count = section->reloc_count; | |
dc810e39 | 2396 | bfd_size_type natsize; |
252b5132 RH |
2397 | |
2398 | if (count == 0 || section->orelocation == NULL) | |
b34976b6 | 2399 | return TRUE; |
252b5132 RH |
2400 | |
2401 | each_size = obj_reloc_entry_size (abfd); | |
dc810e39 | 2402 | natsize = (bfd_size_type) each_size * count; |
a50b1753 | 2403 | native = (unsigned char *) bfd_zalloc (abfd, natsize); |
252b5132 | 2404 | if (!native) |
b34976b6 | 2405 | return FALSE; |
252b5132 RH |
2406 | |
2407 | generic = section->orelocation; | |
2408 | ||
2409 | if (each_size == RELOC_EXT_SIZE) | |
2410 | { | |
2411 | for (natptr = native; | |
2412 | count != 0; | |
2413 | --count, natptr += each_size, ++generic) | |
e2996cc3 | 2414 | { |
92744f05 NC |
2415 | /* PR 20921: If the howto field has not been initialised then skip |
2416 | this reloc. | |
2417 | PR 20929: Similarly for the symbol field. */ | |
2418 | if ((*generic)->howto == NULL | |
2419 | || (*generic)->sym_ptr_ptr == NULL) | |
e2996cc3 NC |
2420 | { |
2421 | bfd_set_error (bfd_error_invalid_operation); | |
92744f05 NC |
2422 | _bfd_error_handler (_("\ |
2423 | %B: attempt to write out unknown reloc type"), abfd); | |
e2996cc3 NC |
2424 | return FALSE; |
2425 | } | |
2426 | MY_swap_ext_reloc_out (abfd, *generic, | |
2427 | (struct reloc_ext_external *) natptr); | |
2428 | } | |
252b5132 RH |
2429 | } |
2430 | else | |
2431 | { | |
2432 | for (natptr = native; | |
2433 | count != 0; | |
2434 | --count, natptr += each_size, ++generic) | |
e2996cc3 | 2435 | { |
92744f05 NC |
2436 | if ((*generic)->howto == NULL |
2437 | || (*generic)->sym_ptr_ptr == NULL) | |
e2996cc3 NC |
2438 | { |
2439 | bfd_set_error (bfd_error_invalid_operation); | |
92744f05 NC |
2440 | _bfd_error_handler (_("\ |
2441 | %B: attempt to write out unknown reloc type"), abfd); | |
e2996cc3 NC |
2442 | return FALSE; |
2443 | } | |
2444 | MY_swap_std_reloc_out (abfd, *generic, | |
2445 | (struct reloc_std_external *) natptr); | |
2446 | } | |
252b5132 RH |
2447 | } |
2448 | ||
116c20d2 | 2449 | if (bfd_bwrite ((void *) native, natsize, abfd) != natsize) |
dc810e39 | 2450 | { |
923f08ff | 2451 | bfd_release (abfd, native); |
b34976b6 | 2452 | return FALSE; |
dc810e39 | 2453 | } |
252b5132 RH |
2454 | bfd_release (abfd, native); |
2455 | ||
b34976b6 | 2456 | return TRUE; |
252b5132 RH |
2457 | } |
2458 | ||
f7c33884 NC |
2459 | /* This is stupid. This function should be a boolean predicate. */ |
2460 | ||
252b5132 | 2461 | long |
116c20d2 NC |
2462 | NAME (aout, canonicalize_reloc) (bfd *abfd, |
2463 | sec_ptr section, | |
2464 | arelent **relptr, | |
2465 | asymbol **symbols) | |
252b5132 RH |
2466 | { |
2467 | arelent *tblptr = section->relocation; | |
2468 | unsigned int count; | |
2469 | ||
2470 | if (section == obj_bsssec (abfd)) | |
2471 | { | |
2472 | *relptr = NULL; | |
2473 | return 0; | |
2474 | } | |
2475 | ||
116c20d2 | 2476 | if (!(tblptr || NAME (aout, slurp_reloc_table) (abfd, section, symbols))) |
252b5132 RH |
2477 | return -1; |
2478 | ||
923f08ff AM |
2479 | if (section->flags & SEC_CONSTRUCTOR) |
2480 | { | |
2481 | arelent_chain *chain = section->constructor_chain; | |
2482 | for (count = 0; count < section->reloc_count; count ++) | |
2483 | { | |
2484 | *relptr ++ = &chain->relent; | |
2485 | chain = chain->next; | |
2486 | } | |
252b5132 | 2487 | } |
923f08ff AM |
2488 | else |
2489 | { | |
2490 | tblptr = section->relocation; | |
252b5132 | 2491 | |
923f08ff AM |
2492 | for (count = 0; count++ < section->reloc_count; ) |
2493 | { | |
2494 | *relptr++ = tblptr++; | |
2495 | } | |
2496 | } | |
252b5132 RH |
2497 | *relptr = 0; |
2498 | ||
2499 | return section->reloc_count; | |
2500 | } | |
2501 | ||
2502 | long | |
116c20d2 | 2503 | NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect) |
252b5132 | 2504 | { |
923f08ff AM |
2505 | if (bfd_get_format (abfd) != bfd_object) |
2506 | { | |
2507 | bfd_set_error (bfd_error_invalid_operation); | |
2508 | return -1; | |
2509 | } | |
f7c33884 | 2510 | |
923f08ff | 2511 | if (asect->flags & SEC_CONSTRUCTOR) |
116c20d2 | 2512 | return sizeof (arelent *) * (asect->reloc_count + 1); |
252b5132 RH |
2513 | |
2514 | if (asect == obj_datasec (abfd)) | |
116c20d2 NC |
2515 | return sizeof (arelent *) |
2516 | * ((exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd)) | |
2517 | + 1); | |
252b5132 RH |
2518 | |
2519 | if (asect == obj_textsec (abfd)) | |
116c20d2 NC |
2520 | return sizeof (arelent *) |
2521 | * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd)) | |
2522 | + 1); | |
252b5132 RH |
2523 | |
2524 | if (asect == obj_bsssec (abfd)) | |
2525 | return sizeof (arelent *); | |
2526 | ||
2527 | if (asect == obj_bsssec (abfd)) | |
2528 | return 0; | |
2529 | ||
2530 | bfd_set_error (bfd_error_invalid_operation); | |
2531 | return -1; | |
2532 | } | |
252b5132 RH |
2533 | \f |
2534 | long | |
116c20d2 | 2535 | NAME (aout, get_symtab_upper_bound) (bfd *abfd) |
252b5132 | 2536 | { |
116c20d2 | 2537 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
252b5132 RH |
2538 | return -1; |
2539 | ||
2540 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
2541 | } | |
2542 | ||
1725a96e | 2543 | alent * |
116c20d2 NC |
2544 | NAME (aout, get_lineno) (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
2545 | asymbol *ignore_symbol ATTRIBUTE_UNUSED) | |
252b5132 | 2546 | { |
116c20d2 | 2547 | return NULL; |
252b5132 RH |
2548 | } |
2549 | ||
252b5132 | 2550 | void |
116c20d2 NC |
2551 | NAME (aout, get_symbol_info) (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
2552 | asymbol *symbol, | |
2553 | symbol_info *ret) | |
252b5132 RH |
2554 | { |
2555 | bfd_symbol_info (symbol, ret); | |
2556 | ||
2557 | if (ret->type == '?') | |
2558 | { | |
923f08ff | 2559 | int type_code = aout_symbol (symbol)->type & 0xff; |
252b5132 RH |
2560 | const char *stab_name = bfd_get_stab_name (type_code); |
2561 | static char buf[10]; | |
2562 | ||
2563 | if (stab_name == NULL) | |
2564 | { | |
e60b52c6 | 2565 | sprintf (buf, "(%d)", type_code); |
252b5132 RH |
2566 | stab_name = buf; |
2567 | } | |
2568 | ret->type = '-'; | |
2569 | ret->stab_type = type_code; | |
923f08ff AM |
2570 | ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff); |
2571 | ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff); | |
252b5132 RH |
2572 | ret->stab_name = stab_name; |
2573 | } | |
2574 | } | |
2575 | ||
252b5132 | 2576 | void |
116c20d2 NC |
2577 | NAME (aout, print_symbol) (bfd *abfd, |
2578 | void * afile, | |
2579 | asymbol *symbol, | |
2580 | bfd_print_symbol_type how) | |
252b5132 RH |
2581 | { |
2582 | FILE *file = (FILE *)afile; | |
2583 | ||
923f08ff | 2584 | switch (how) |
252b5132 | 2585 | { |
923f08ff AM |
2586 | case bfd_print_symbol_name: |
2587 | if (symbol->name) | |
2588 | fprintf (file,"%s", symbol->name); | |
2589 | break; | |
2590 | case bfd_print_symbol_more: | |
2591 | fprintf (file,"%4x %2x %2x", | |
2592 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2593 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2594 | (unsigned) (aout_symbol (symbol)->type)); | |
2595 | break; | |
2596 | case bfd_print_symbol_all: | |
2597 | { | |
2598 | const char *section_name = symbol->section->name; | |
252b5132 | 2599 | |
116c20d2 | 2600 | bfd_print_symbol_vandf (abfd, (void *)file, symbol); |
252b5132 | 2601 | |
923f08ff AM |
2602 | fprintf (file," %-5s %04x %02x %02x", |
2603 | section_name, | |
2604 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2605 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2606 | (unsigned) (aout_symbol (symbol)->type & 0xff)); | |
2607 | if (symbol->name) | |
2608 | fprintf (file," %s", symbol->name); | |
2609 | } | |
2610 | break; | |
252b5132 | 2611 | } |
252b5132 RH |
2612 | } |
2613 | ||
2614 | /* If we don't have to allocate more than 1MB to hold the generic | |
2615 | symbols, we use the generic minisymbol methord: it's faster, since | |
2616 | it only translates the symbols once, not multiple times. */ | |
2617 | #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) | |
2618 | ||
2619 | /* Read minisymbols. For minisymbols, we use the unmodified a.out | |
2620 | symbols. The minisymbol_to_symbol function translates these into | |
2621 | BFD asymbol structures. */ | |
2622 | ||
2623 | long | |
116c20d2 NC |
2624 | NAME (aout, read_minisymbols) (bfd *abfd, |
2625 | bfd_boolean dynamic, | |
2626 | void * *minisymsp, | |
2627 | unsigned int *sizep) | |
252b5132 RH |
2628 | { |
2629 | if (dynamic) | |
116c20d2 NC |
2630 | /* We could handle the dynamic symbols here as well, but it's |
2631 | easier to hand them off. */ | |
2632 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
252b5132 RH |
2633 | |
2634 | if (! aout_get_external_symbols (abfd)) | |
2635 | return -1; | |
2636 | ||
2637 | if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2638 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2639 | ||
116c20d2 | 2640 | *minisymsp = (void *) obj_aout_external_syms (abfd); |
252b5132 RH |
2641 | |
2642 | /* By passing the external symbols back from this routine, we are | |
2643 | giving up control over the memory block. Clear | |
2644 | obj_aout_external_syms, so that we do not try to free it | |
2645 | ourselves. */ | |
2646 | obj_aout_external_syms (abfd) = NULL; | |
2647 | ||
2648 | *sizep = EXTERNAL_NLIST_SIZE; | |
2649 | return obj_aout_external_sym_count (abfd); | |
2650 | } | |
2651 | ||
2652 | /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an | |
2653 | unmodified a.out symbol. The SYM argument is a structure returned | |
2654 | by bfd_make_empty_symbol, which we fill in here. */ | |
2655 | ||
2656 | asymbol * | |
116c20d2 NC |
2657 | NAME (aout, minisymbol_to_symbol) (bfd *abfd, |
2658 | bfd_boolean dynamic, | |
2659 | const void * minisym, | |
2660 | asymbol *sym) | |
252b5132 RH |
2661 | { |
2662 | if (dynamic | |
2663 | || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2664 | return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); | |
2665 | ||
2666 | memset (sym, 0, sizeof (aout_symbol_type)); | |
2667 | ||
2668 | /* We call translate_symbol_table to translate a single symbol. */ | |
116c20d2 | 2669 | if (! (NAME (aout, translate_symbol_table) |
252b5132 RH |
2670 | (abfd, |
2671 | (aout_symbol_type *) sym, | |
2672 | (struct external_nlist *) minisym, | |
2673 | (bfd_size_type) 1, | |
2674 | obj_aout_external_strings (abfd), | |
2675 | obj_aout_external_string_size (abfd), | |
b34976b6 | 2676 | FALSE))) |
252b5132 RH |
2677 | return NULL; |
2678 | ||
2679 | return sym; | |
2680 | } | |
2681 | ||
f7c33884 NC |
2682 | /* Provided a BFD, a section and an offset into the section, calculate |
2683 | and return the name of the source file and the line nearest to the | |
2684 | wanted location. */ | |
252b5132 | 2685 | |
b34976b6 | 2686 | bfd_boolean |
116c20d2 | 2687 | NAME (aout, find_nearest_line) (bfd *abfd, |
116c20d2 | 2688 | asymbol **symbols, |
fb167eb2 | 2689 | asection *section, |
116c20d2 NC |
2690 | bfd_vma offset, |
2691 | const char **filename_ptr, | |
2692 | const char **functionname_ptr, | |
fb167eb2 AM |
2693 | unsigned int *line_ptr, |
2694 | unsigned int *disriminator_ptr) | |
252b5132 | 2695 | { |
f7c33884 | 2696 | /* Run down the file looking for the filename, function and linenumber. */ |
252b5132 | 2697 | asymbol **p; |
dc810e39 AM |
2698 | const char *directory_name = NULL; |
2699 | const char *main_file_name = NULL; | |
2700 | const char *current_file_name = NULL; | |
116c20d2 | 2701 | const char *line_file_name = NULL; /* Value of current_file_name at line number. */ |
dc810e39 | 2702 | const char *line_directory_name = NULL; /* Value of directory_name at line number. */ |
252b5132 RH |
2703 | bfd_vma low_line_vma = 0; |
2704 | bfd_vma low_func_vma = 0; | |
2705 | asymbol *func = 0; | |
dc810e39 | 2706 | bfd_size_type filelen, funclen; |
252b5132 RH |
2707 | char *buf; |
2708 | ||
2709 | *filename_ptr = abfd->filename; | |
50455f1a | 2710 | *functionname_ptr = NULL; |
252b5132 | 2711 | *line_ptr = 0; |
fb167eb2 AM |
2712 | if (disriminator_ptr) |
2713 | *disriminator_ptr = 0; | |
f7c33884 | 2714 | |
116c20d2 | 2715 | if (symbols != NULL) |
923f08ff AM |
2716 | { |
2717 | for (p = symbols; *p; p++) | |
2718 | { | |
2719 | aout_symbol_type *q = (aout_symbol_type *) (*p); | |
2720 | next: | |
2721 | switch (q->type) | |
2722 | { | |
2723 | case N_TEXT: | |
2724 | /* If this looks like a file name symbol, and it comes after | |
2725 | the line number we have found so far, but before the | |
2726 | offset, then we have probably not found the right line | |
2727 | number. */ | |
2728 | if (q->symbol.value <= offset | |
2729 | && ((q->symbol.value > low_line_vma | |
2730 | && (line_file_name != NULL | |
2731 | || *line_ptr != 0)) | |
2732 | || (q->symbol.value > low_func_vma | |
2733 | && func != NULL))) | |
2734 | { | |
2735 | const char *symname; | |
252b5132 | 2736 | |
923f08ff AM |
2737 | symname = q->symbol.name; |
2738 | if (strcmp (symname + strlen (symname) - 2, ".o") == 0) | |
2739 | { | |
2740 | if (q->symbol.value > low_line_vma) | |
2741 | { | |
2742 | *line_ptr = 0; | |
2743 | line_file_name = NULL; | |
2744 | } | |
2745 | if (q->symbol.value > low_func_vma) | |
2746 | func = NULL; | |
2747 | } | |
2748 | } | |
2749 | break; | |
252b5132 | 2750 | |
923f08ff AM |
2751 | case N_SO: |
2752 | /* If this symbol is less than the offset, but greater than | |
2753 | the line number we have found so far, then we have not | |
2754 | found the right line number. */ | |
2755 | if (q->symbol.value <= offset) | |
2756 | { | |
2757 | if (q->symbol.value > low_line_vma) | |
2758 | { | |
2759 | *line_ptr = 0; | |
2760 | line_file_name = NULL; | |
2761 | } | |
2762 | if (q->symbol.value > low_func_vma) | |
2763 | func = NULL; | |
2764 | } | |
252b5132 | 2765 | |
923f08ff AM |
2766 | main_file_name = current_file_name = q->symbol.name; |
2767 | /* Look ahead to next symbol to check if that too is an N_SO. */ | |
2768 | p++; | |
2769 | if (*p == NULL) | |
c3864421 | 2770 | goto done; |
923f08ff AM |
2771 | q = (aout_symbol_type *) (*p); |
2772 | if (q->type != (int)N_SO) | |
2773 | goto next; | |
2774 | ||
2775 | /* Found a second N_SO First is directory; second is filename. */ | |
2776 | directory_name = current_file_name; | |
2777 | main_file_name = current_file_name = q->symbol.name; | |
2778 | if (obj_textsec (abfd) != section) | |
2779 | goto done; | |
2780 | break; | |
2781 | case N_SOL: | |
2782 | current_file_name = q->symbol.name; | |
2783 | break; | |
252b5132 | 2784 | |
923f08ff | 2785 | case N_SLINE: |
252b5132 | 2786 | |
923f08ff AM |
2787 | case N_DSLINE: |
2788 | case N_BSLINE: | |
2789 | /* We'll keep this if it resolves nearer than the one we have | |
2790 | already. */ | |
2791 | if (q->symbol.value >= low_line_vma | |
2792 | && q->symbol.value <= offset) | |
2793 | { | |
2794 | *line_ptr = q->desc; | |
2795 | low_line_vma = q->symbol.value; | |
2796 | line_file_name = current_file_name; | |
2797 | line_directory_name = directory_name; | |
2798 | } | |
2799 | break; | |
2800 | case N_FUN: | |
2801 | { | |
f7c33884 | 2802 | /* We'll keep this if it is nearer than the one we have already. */ |
923f08ff | 2803 | if (q->symbol.value >= low_func_vma && |
f7c33884 NC |
2804 | q->symbol.value <= offset) |
2805 | { | |
2806 | low_func_vma = q->symbol.value; | |
2807 | func = (asymbol *)q; | |
2808 | } | |
923f08ff AM |
2809 | else if (q->symbol.value > offset) |
2810 | goto done; | |
2811 | } | |
2812 | break; | |
2813 | } | |
252b5132 | 2814 | } |
252b5132 | 2815 | } |
252b5132 RH |
2816 | |
2817 | done: | |
2818 | if (*line_ptr != 0) | |
2819 | { | |
2820 | main_file_name = line_file_name; | |
2821 | directory_name = line_directory_name; | |
2822 | } | |
2823 | ||
2824 | if (main_file_name == NULL | |
5af11cab | 2825 | || IS_ABSOLUTE_PATH (main_file_name) |
252b5132 RH |
2826 | || directory_name == NULL) |
2827 | filelen = 0; | |
2828 | else | |
2829 | filelen = strlen (directory_name) + strlen (main_file_name); | |
f7c33884 | 2830 | |
252b5132 RH |
2831 | if (func == NULL) |
2832 | funclen = 0; | |
2833 | else | |
2834 | funclen = strlen (bfd_asymbol_name (func)); | |
2835 | ||
2836 | if (adata (abfd).line_buf != NULL) | |
2837 | free (adata (abfd).line_buf); | |
f7c33884 | 2838 | |
252b5132 RH |
2839 | if (filelen + funclen == 0) |
2840 | adata (abfd).line_buf = buf = NULL; | |
2841 | else | |
2842 | { | |
a50b1753 | 2843 | buf = (char *) bfd_malloc (filelen + funclen + 3); |
252b5132 RH |
2844 | adata (abfd).line_buf = buf; |
2845 | if (buf == NULL) | |
b34976b6 | 2846 | return FALSE; |
252b5132 RH |
2847 | } |
2848 | ||
2849 | if (main_file_name != NULL) | |
2850 | { | |
5af11cab | 2851 | if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL) |
252b5132 RH |
2852 | *filename_ptr = main_file_name; |
2853 | else | |
2854 | { | |
50455f1a NC |
2855 | if (buf == NULL) |
2856 | /* PR binutils/20891: In a corrupt input file both | |
2857 | main_file_name and directory_name can be empty... */ | |
2858 | * filename_ptr = NULL; | |
2859 | else | |
2860 | { | |
2861 | snprintf (buf, filelen + 1, "%s%s", directory_name, | |
2862 | main_file_name); | |
2863 | *filename_ptr = buf; | |
2864 | buf += filelen + 1; | |
2865 | } | |
252b5132 RH |
2866 | } |
2867 | } | |
2868 | ||
2869 | if (func) | |
2870 | { | |
2871 | const char *function = func->name; | |
dc810e39 | 2872 | char *colon; |
252b5132 | 2873 | |
e82ab856 NC |
2874 | if (buf == NULL) |
2875 | { | |
2876 | /* PR binutils/20892: In a corrupt input file func can be empty. */ | |
2877 | * functionname_ptr = NULL; | |
2878 | return TRUE; | |
2879 | } | |
252b5132 RH |
2880 | /* The caller expects a symbol name. We actually have a |
2881 | function name, without the leading underscore. Put the | |
2882 | underscore back in, so that the caller gets a symbol name. */ | |
2883 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
2884 | strcpy (buf, function); | |
2885 | else | |
2886 | { | |
2887 | buf[0] = bfd_get_symbol_leading_char (abfd); | |
2888 | strcpy (buf + 1, function); | |
2889 | } | |
f7c33884 | 2890 | /* Have to remove : stuff. */ |
dc810e39 AM |
2891 | colon = strchr (buf, ':'); |
2892 | if (colon != NULL) | |
2893 | *colon = '\0'; | |
252b5132 RH |
2894 | *functionname_ptr = buf; |
2895 | } | |
2896 | ||
b34976b6 | 2897 | return TRUE; |
252b5132 RH |
2898 | } |
2899 | ||
252b5132 | 2900 | int |
a6b96beb AM |
2901 | NAME (aout, sizeof_headers) (bfd *abfd, |
2902 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
252b5132 | 2903 | { |
923f08ff | 2904 | return adata (abfd).exec_bytes_size; |
252b5132 RH |
2905 | } |
2906 | ||
2907 | /* Free all information we have cached for this BFD. We can always | |
2908 | read it again later if we need it. */ | |
2909 | ||
b34976b6 | 2910 | bfd_boolean |
116c20d2 | 2911 | NAME (aout, bfd_free_cached_info) (bfd *abfd) |
252b5132 RH |
2912 | { |
2913 | asection *o; | |
2914 | ||
920581c5 L |
2915 | if (bfd_get_format (abfd) != bfd_object |
2916 | || abfd->tdata.aout_data == NULL) | |
b34976b6 | 2917 | return TRUE; |
252b5132 RH |
2918 | |
2919 | #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } | |
2920 | BFCI_FREE (obj_aout_symbols (abfd)); | |
2921 | #ifdef USE_MMAP | |
2922 | obj_aout_external_syms (abfd) = 0; | |
2923 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2924 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2925 | obj_aout_external_strings (abfd) = 0; | |
2926 | #else | |
2927 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2928 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
2929 | #endif | |
116c20d2 | 2930 | for (o = abfd->sections; o != NULL; o = o->next) |
252b5132 RH |
2931 | BFCI_FREE (o->relocation); |
2932 | #undef BFCI_FREE | |
2933 | ||
b34976b6 | 2934 | return TRUE; |
252b5132 RH |
2935 | } |
2936 | \f | |
2937 | /* a.out link code. */ | |
2938 | ||
252b5132 RH |
2939 | /* Routine to create an entry in an a.out link hash table. */ |
2940 | ||
2941 | struct bfd_hash_entry * | |
116c20d2 NC |
2942 | NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry, |
2943 | struct bfd_hash_table *table, | |
2944 | const char *string) | |
252b5132 RH |
2945 | { |
2946 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2947 | ||
2948 | /* Allocate the structure if it has not already been allocated by a | |
2949 | subclass. */ | |
116c20d2 | 2950 | if (ret == NULL) |
a50b1753 NC |
2951 | ret = (struct aout_link_hash_entry *) bfd_hash_allocate (table, |
2952 | sizeof (* ret)); | |
116c20d2 NC |
2953 | if (ret == NULL) |
2954 | return NULL; | |
252b5132 RH |
2955 | |
2956 | /* Call the allocation method of the superclass. */ | |
2957 | ret = ((struct aout_link_hash_entry *) | |
2958 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2959 | table, string)); | |
2960 | if (ret) | |
2961 | { | |
2962 | /* Set local fields. */ | |
b34976b6 | 2963 | ret->written = FALSE; |
252b5132 RH |
2964 | ret->indx = -1; |
2965 | } | |
2966 | ||
2967 | return (struct bfd_hash_entry *) ret; | |
2968 | } | |
2969 | ||
2970 | /* Initialize an a.out link hash table. */ | |
2971 | ||
b34976b6 | 2972 | bfd_boolean |
116c20d2 NC |
2973 | NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table, |
2974 | bfd *abfd, | |
2975 | struct bfd_hash_entry *(*newfunc) | |
2976 | (struct bfd_hash_entry *, struct bfd_hash_table *, | |
66eb6687 AM |
2977 | const char *), |
2978 | unsigned int entsize) | |
252b5132 | 2979 | { |
66eb6687 | 2980 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
252b5132 RH |
2981 | } |
2982 | ||
2983 | /* Create an a.out link hash table. */ | |
2984 | ||
2985 | struct bfd_link_hash_table * | |
116c20d2 | 2986 | NAME (aout, link_hash_table_create) (bfd *abfd) |
252b5132 RH |
2987 | { |
2988 | struct aout_link_hash_table *ret; | |
116c20d2 | 2989 | bfd_size_type amt = sizeof (* ret); |
252b5132 | 2990 | |
a50b1753 | 2991 | ret = (struct aout_link_hash_table *) bfd_malloc (amt); |
252b5132 | 2992 | if (ret == NULL) |
116c20d2 | 2993 | return NULL; |
5ed6aba4 | 2994 | |
66eb6687 AM |
2995 | if (!NAME (aout, link_hash_table_init) (ret, abfd, |
2996 | NAME (aout, link_hash_newfunc), | |
2997 | sizeof (struct aout_link_hash_entry))) | |
252b5132 RH |
2998 | { |
2999 | free (ret); | |
116c20d2 | 3000 | return NULL; |
252b5132 RH |
3001 | } |
3002 | return &ret->root; | |
3003 | } | |
3004 | ||
116c20d2 | 3005 | /* Add all symbols from an object file to the hash table. */ |
252b5132 | 3006 | |
b34976b6 | 3007 | static bfd_boolean |
116c20d2 | 3008 | aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 3009 | { |
116c20d2 NC |
3010 | bfd_boolean (*add_one_symbol) |
3011 | (struct bfd_link_info *, bfd *, const char *, flagword, asection *, | |
3012 | bfd_vma, const char *, bfd_boolean, bfd_boolean, | |
3013 | struct bfd_link_hash_entry **); | |
3014 | struct external_nlist *syms; | |
3015 | bfd_size_type sym_count; | |
3016 | char *strings; | |
3017 | bfd_boolean copy; | |
3018 | struct aout_link_hash_entry **sym_hash; | |
3019 | struct external_nlist *p; | |
3020 | struct external_nlist *pend; | |
3021 | bfd_size_type amt; | |
252b5132 | 3022 | |
116c20d2 NC |
3023 | syms = obj_aout_external_syms (abfd); |
3024 | sym_count = obj_aout_external_sym_count (abfd); | |
3025 | strings = obj_aout_external_strings (abfd); | |
3026 | if (info->keep_memory) | |
3027 | copy = FALSE; | |
3028 | else | |
3029 | copy = TRUE; | |
252b5132 | 3030 | |
116c20d2 | 3031 | if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) |
252b5132 | 3032 | { |
116c20d2 NC |
3033 | if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) |
3034 | (abfd, info, &syms, &sym_count, &strings))) | |
b34976b6 | 3035 | return FALSE; |
252b5132 RH |
3036 | } |
3037 | ||
20c6e70e MS |
3038 | if (sym_count == 0) |
3039 | return TRUE; /* Nothing to do. */ | |
3040 | ||
116c20d2 NC |
3041 | /* We keep a list of the linker hash table entries that correspond |
3042 | to particular symbols. We could just look them up in the hash | |
3043 | table, but keeping the list is more efficient. Perhaps this | |
3044 | should be conditional on info->keep_memory. */ | |
3045 | amt = sym_count * sizeof (struct aout_link_hash_entry *); | |
a50b1753 | 3046 | sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt); |
20c6e70e | 3047 | if (sym_hash == NULL) |
116c20d2 NC |
3048 | return FALSE; |
3049 | obj_aout_sym_hashes (abfd) = sym_hash; | |
252b5132 | 3050 | |
116c20d2 NC |
3051 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; |
3052 | if (add_one_symbol == NULL) | |
3053 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
252b5132 | 3054 | |
116c20d2 NC |
3055 | p = syms; |
3056 | pend = p + sym_count; | |
3057 | for (; p < pend; p++, sym_hash++) | |
252b5132 | 3058 | { |
116c20d2 | 3059 | int type; |
252b5132 | 3060 | const char *name; |
116c20d2 NC |
3061 | bfd_vma value; |
3062 | asection *section; | |
3063 | flagword flags; | |
3064 | const char *string; | |
252b5132 | 3065 | |
116c20d2 | 3066 | *sym_hash = NULL; |
252b5132 | 3067 | |
116c20d2 | 3068 | type = H_GET_8 (abfd, p->e_type); |
252b5132 | 3069 | |
116c20d2 NC |
3070 | /* Ignore debugging symbols. */ |
3071 | if ((type & N_STAB) != 0) | |
3072 | continue; | |
252b5132 | 3073 | |
e517df3d | 3074 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
531336e3 | 3075 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3076 | return FALSE; |
116c20d2 NC |
3077 | name = strings + GET_WORD (abfd, p->e_strx); |
3078 | value = GET_WORD (abfd, p->e_value); | |
3079 | flags = BSF_GLOBAL; | |
3080 | string = NULL; | |
3081 | switch (type) | |
252b5132 | 3082 | { |
116c20d2 NC |
3083 | default: |
3084 | abort (); | |
f7c33884 | 3085 | |
116c20d2 NC |
3086 | case N_UNDF: |
3087 | case N_ABS: | |
3088 | case N_TEXT: | |
3089 | case N_DATA: | |
3090 | case N_BSS: | |
3091 | case N_FN_SEQ: | |
3092 | case N_COMM: | |
3093 | case N_SETV: | |
3094 | case N_FN: | |
3095 | /* Ignore symbols that are not externally visible. */ | |
3096 | continue; | |
3097 | case N_INDR: | |
3098 | /* Ignore local indirect symbol. */ | |
3099 | ++p; | |
3100 | ++sym_hash; | |
3101 | continue; | |
252b5132 | 3102 | |
116c20d2 NC |
3103 | case N_UNDF | N_EXT: |
3104 | if (value == 0) | |
f7c33884 | 3105 | { |
116c20d2 NC |
3106 | section = bfd_und_section_ptr; |
3107 | flags = 0; | |
252b5132 RH |
3108 | } |
3109 | else | |
3110 | section = bfd_com_section_ptr; | |
3111 | break; | |
3112 | case N_ABS | N_EXT: | |
3113 | section = bfd_abs_section_ptr; | |
3114 | break; | |
3115 | case N_TEXT | N_EXT: | |
3116 | section = obj_textsec (abfd); | |
3117 | value -= bfd_get_section_vma (abfd, section); | |
3118 | break; | |
3119 | case N_DATA | N_EXT: | |
3120 | case N_SETV | N_EXT: | |
3121 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
3122 | translate_from_native_sym_flags. */ | |
3123 | section = obj_datasec (abfd); | |
3124 | value -= bfd_get_section_vma (abfd, section); | |
3125 | break; | |
3126 | case N_BSS | N_EXT: | |
3127 | section = obj_bsssec (abfd); | |
3128 | value -= bfd_get_section_vma (abfd, section); | |
3129 | break; | |
3130 | case N_INDR | N_EXT: | |
3131 | /* An indirect symbol. The next symbol is the symbol | |
3132 | which this one really is. */ | |
39d4daf6 NC |
3133 | /* See PR 20925 for a reproducer. */ |
3134 | if (p + 1 >= pend) | |
3135 | return FALSE; | |
252b5132 | 3136 | ++p; |
e517df3d | 3137 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
daae68f4 | 3138 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3139 | return FALSE; |
252b5132 RH |
3140 | string = strings + GET_WORD (abfd, p->e_strx); |
3141 | section = bfd_ind_section_ptr; | |
3142 | flags |= BSF_INDIRECT; | |
3143 | break; | |
3144 | case N_COMM | N_EXT: | |
3145 | section = bfd_com_section_ptr; | |
3146 | break; | |
3147 | case N_SETA: case N_SETA | N_EXT: | |
3148 | section = bfd_abs_section_ptr; | |
3149 | flags |= BSF_CONSTRUCTOR; | |
3150 | break; | |
3151 | case N_SETT: case N_SETT | N_EXT: | |
3152 | section = obj_textsec (abfd); | |
3153 | flags |= BSF_CONSTRUCTOR; | |
3154 | value -= bfd_get_section_vma (abfd, section); | |
3155 | break; | |
3156 | case N_SETD: case N_SETD | N_EXT: | |
3157 | section = obj_datasec (abfd); | |
3158 | flags |= BSF_CONSTRUCTOR; | |
3159 | value -= bfd_get_section_vma (abfd, section); | |
3160 | break; | |
3161 | case N_SETB: case N_SETB | N_EXT: | |
3162 | section = obj_bsssec (abfd); | |
3163 | flags |= BSF_CONSTRUCTOR; | |
3164 | value -= bfd_get_section_vma (abfd, section); | |
3165 | break; | |
3166 | case N_WARNING: | |
3167 | /* A warning symbol. The next symbol is the one to warn | |
9f400ee9 HPN |
3168 | about. If there is no next symbol, just look away. */ |
3169 | if (p + 1 >= pend) | |
3170 | return TRUE; | |
252b5132 RH |
3171 | ++p; |
3172 | string = name; | |
e517df3d | 3173 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
daae68f4 | 3174 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3175 | return FALSE; |
252b5132 RH |
3176 | name = strings + GET_WORD (abfd, p->e_strx); |
3177 | section = bfd_und_section_ptr; | |
3178 | flags |= BSF_WARNING; | |
3179 | break; | |
3180 | case N_WEAKU: | |
3181 | section = bfd_und_section_ptr; | |
3182 | flags = BSF_WEAK; | |
3183 | break; | |
3184 | case N_WEAKA: | |
3185 | section = bfd_abs_section_ptr; | |
3186 | flags = BSF_WEAK; | |
3187 | break; | |
3188 | case N_WEAKT: | |
3189 | section = obj_textsec (abfd); | |
3190 | value -= bfd_get_section_vma (abfd, section); | |
3191 | flags = BSF_WEAK; | |
3192 | break; | |
3193 | case N_WEAKD: | |
3194 | section = obj_datasec (abfd); | |
3195 | value -= bfd_get_section_vma (abfd, section); | |
3196 | flags = BSF_WEAK; | |
3197 | break; | |
3198 | case N_WEAKB: | |
3199 | section = obj_bsssec (abfd); | |
3200 | value -= bfd_get_section_vma (abfd, section); | |
3201 | flags = BSF_WEAK; | |
3202 | break; | |
3203 | } | |
3204 | ||
3205 | if (! ((*add_one_symbol) | |
b34976b6 | 3206 | (info, abfd, name, flags, section, value, string, copy, FALSE, |
252b5132 | 3207 | (struct bfd_link_hash_entry **) sym_hash))) |
b34976b6 | 3208 | return FALSE; |
252b5132 RH |
3209 | |
3210 | /* Restrict the maximum alignment of a common symbol based on | |
3211 | the architecture, since a.out has no way to represent | |
3212 | alignment requirements of a section in a .o file. FIXME: | |
3213 | This isn't quite right: it should use the architecture of the | |
3214 | output file, not the input files. */ | |
3215 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
3216 | && ((*sym_hash)->root.u.c.p->alignment_power > | |
3217 | bfd_get_arch_info (abfd)->section_align_power)) | |
3218 | (*sym_hash)->root.u.c.p->alignment_power = | |
3219 | bfd_get_arch_info (abfd)->section_align_power; | |
3220 | ||
3221 | /* If this is a set symbol, and we are not building sets, then | |
3222 | it is possible for the hash entry to not have been set. In | |
3223 | such a case, treat the symbol as not globally defined. */ | |
3224 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
3225 | { | |
3226 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
3227 | *sym_hash = NULL; | |
3228 | } | |
3229 | ||
3230 | if (type == (N_INDR | N_EXT) || type == N_WARNING) | |
3231 | ++sym_hash; | |
3232 | } | |
3233 | ||
b34976b6 | 3234 | return TRUE; |
252b5132 | 3235 | } |
252b5132 | 3236 | |
116c20d2 NC |
3237 | /* Free up the internal symbols read from an a.out file. */ |
3238 | ||
3239 | static bfd_boolean | |
3240 | aout_link_free_symbols (bfd *abfd) | |
252b5132 | 3241 | { |
116c20d2 NC |
3242 | if (obj_aout_external_syms (abfd) != NULL) |
3243 | { | |
3244 | #ifdef USE_MMAP | |
3245 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
3246 | #else | |
3247 | free ((void *) obj_aout_external_syms (abfd)); | |
3248 | #endif | |
3249 | obj_aout_external_syms (abfd) = NULL; | |
3250 | } | |
3251 | if (obj_aout_external_strings (abfd) != NULL) | |
3252 | { | |
3253 | #ifdef USE_MMAP | |
3254 | bfd_free_window (&obj_aout_string_window (abfd)); | |
3255 | #else | |
3256 | free ((void *) obj_aout_external_strings (abfd)); | |
3257 | #endif | |
3258 | obj_aout_external_strings (abfd) = NULL; | |
3259 | } | |
3260 | return TRUE; | |
3261 | } | |
252b5132 | 3262 | |
116c20d2 | 3263 | /* Add symbols from an a.out object file. */ |
252b5132 | 3264 | |
116c20d2 NC |
3265 | static bfd_boolean |
3266 | aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) | |
252b5132 | 3267 | { |
116c20d2 NC |
3268 | if (! aout_get_external_symbols (abfd)) |
3269 | return FALSE; | |
3270 | if (! aout_link_add_symbols (abfd, info)) | |
3271 | return FALSE; | |
3272 | if (! info->keep_memory) | |
3273 | { | |
3274 | if (! aout_link_free_symbols (abfd)) | |
3275 | return FALSE; | |
3276 | } | |
3277 | return TRUE; | |
3278 | } | |
252b5132 | 3279 | |
116c20d2 NC |
3280 | /* Look through the internal symbols to see if this object file should |
3281 | be included in the link. We should include this object file if it | |
3282 | defines any symbols which are currently undefined. If this object | |
3283 | file defines a common symbol, then we may adjust the size of the | |
3284 | known symbol but we do not include the object file in the link | |
3285 | (unless there is some other reason to include it). */ | |
252b5132 | 3286 | |
116c20d2 NC |
3287 | static bfd_boolean |
3288 | aout_link_check_ar_symbols (bfd *abfd, | |
3289 | struct bfd_link_info *info, | |
5d3236ee DK |
3290 | bfd_boolean *pneeded, |
3291 | bfd **subsbfd) | |
252b5132 | 3292 | { |
116c20d2 NC |
3293 | struct external_nlist *p; |
3294 | struct external_nlist *pend; | |
3295 | char *strings; | |
252b5132 | 3296 | |
116c20d2 | 3297 | *pneeded = FALSE; |
252b5132 | 3298 | |
116c20d2 NC |
3299 | /* Look through all the symbols. */ |
3300 | p = obj_aout_external_syms (abfd); | |
3301 | pend = p + obj_aout_external_sym_count (abfd); | |
3302 | strings = obj_aout_external_strings (abfd); | |
3303 | for (; p < pend; p++) | |
3304 | { | |
3305 | int type = H_GET_8 (abfd, p->e_type); | |
3306 | const char *name; | |
3307 | struct bfd_link_hash_entry *h; | |
252b5132 | 3308 | |
116c20d2 NC |
3309 | /* Ignore symbols that are not externally visible. This is an |
3310 | optimization only, as we check the type more thoroughly | |
3311 | below. */ | |
3312 | if (((type & N_EXT) == 0 | |
3313 | || (type & N_STAB) != 0 | |
3314 | || type == N_FN) | |
3315 | && type != N_WEAKA | |
3316 | && type != N_WEAKT | |
3317 | && type != N_WEAKD | |
3318 | && type != N_WEAKB) | |
3319 | { | |
3320 | if (type == N_WARNING | |
3321 | || type == N_INDR) | |
3322 | ++p; | |
3323 | continue; | |
3324 | } | |
3325 | ||
3326 | name = strings + GET_WORD (abfd, p->e_strx); | |
3327 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); | |
3328 | ||
3329 | /* We are only interested in symbols that are currently | |
3330 | undefined or common. */ | |
3331 | if (h == NULL | |
3332 | || (h->type != bfd_link_hash_undefined | |
3333 | && h->type != bfd_link_hash_common)) | |
3334 | { | |
3335 | if (type == (N_INDR | N_EXT)) | |
3336 | ++p; | |
3337 | continue; | |
3338 | } | |
3339 | ||
3340 | if (type == (N_TEXT | N_EXT) | |
3341 | || type == (N_DATA | N_EXT) | |
3342 | || type == (N_BSS | N_EXT) | |
3343 | || type == (N_ABS | N_EXT) | |
3344 | || type == (N_INDR | N_EXT)) | |
3345 | { | |
3346 | /* This object file defines this symbol. We must link it | |
3347 | in. This is true regardless of whether the current | |
3348 | definition of the symbol is undefined or common. | |
3349 | ||
3350 | If the current definition is common, we have a case in | |
3351 | which we have already seen an object file including: | |
3352 | int a; | |
3353 | and this object file from the archive includes: | |
3354 | int a = 5; | |
3355 | In such a case, whether to include this object is target | |
3356 | dependant for backward compatibility. | |
3357 | ||
3358 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
3359 | element if the symbol is defined in the .data section, | |
3360 | but not if it is defined in the .text section. That | |
3361 | seems a bit crazy to me, and it has not been implemented | |
3362 | yet. However, it might be correct. */ | |
3363 | if (h->type == bfd_link_hash_common) | |
3364 | { | |
3365 | int skip = 0; | |
3366 | ||
f88dc410 | 3367 | switch (info->common_skip_ar_symbols) |
116c20d2 NC |
3368 | { |
3369 | case bfd_link_common_skip_text: | |
3370 | skip = (type == (N_TEXT | N_EXT)); | |
3371 | break; | |
3372 | case bfd_link_common_skip_data: | |
3373 | skip = (type == (N_DATA | N_EXT)); | |
3374 | break; | |
3375 | default: | |
3376 | case bfd_link_common_skip_all: | |
3377 | skip = 1; | |
3378 | break; | |
3379 | } | |
3380 | ||
3381 | if (skip) | |
3382 | continue; | |
3383 | } | |
3384 | ||
0e144ba7 AM |
3385 | if (!(*info->callbacks |
3386 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3387 | return FALSE; |
3388 | *pneeded = TRUE; | |
3389 | return TRUE; | |
3390 | } | |
3391 | ||
3392 | if (type == (N_UNDF | N_EXT)) | |
3393 | { | |
3394 | bfd_vma value; | |
3395 | ||
3396 | value = GET_WORD (abfd, p->e_value); | |
3397 | if (value != 0) | |
3398 | { | |
3399 | /* This symbol is common in the object from the archive | |
3400 | file. */ | |
3401 | if (h->type == bfd_link_hash_undefined) | |
3402 | { | |
3403 | bfd *symbfd; | |
3404 | unsigned int power; | |
3405 | ||
3406 | symbfd = h->u.undef.abfd; | |
3407 | if (symbfd == NULL) | |
3408 | { | |
3409 | /* This symbol was created as undefined from | |
3410 | outside BFD. We assume that we should link | |
3411 | in the object file. This is done for the -u | |
3412 | option in the linker. */ | |
0e144ba7 AM |
3413 | if (!(*info->callbacks |
3414 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3415 | return FALSE; |
3416 | *pneeded = TRUE; | |
3417 | return TRUE; | |
3418 | } | |
3419 | /* Turn the current link symbol into a common | |
3420 | symbol. It is already on the undefs list. */ | |
3421 | h->type = bfd_link_hash_common; | |
a50b1753 | 3422 | h->u.c.p = (struct bfd_link_hash_common_entry *) |
0e144ba7 AM |
3423 | bfd_hash_allocate (&info->hash->table, |
3424 | sizeof (struct bfd_link_hash_common_entry)); | |
116c20d2 NC |
3425 | if (h->u.c.p == NULL) |
3426 | return FALSE; | |
3427 | ||
3428 | h->u.c.size = value; | |
3429 | ||
3430 | /* FIXME: This isn't quite right. The maximum | |
3431 | alignment of a common symbol should be set by the | |
3432 | architecture of the output file, not of the input | |
3433 | file. */ | |
3434 | power = bfd_log2 (value); | |
3435 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
3436 | power = bfd_get_arch_info (abfd)->section_align_power; | |
3437 | h->u.c.p->alignment_power = power; | |
3438 | ||
3439 | h->u.c.p->section = bfd_make_section_old_way (symbfd, | |
3440 | "COMMON"); | |
3441 | } | |
3442 | else | |
3443 | { | |
3444 | /* Adjust the size of the common symbol if | |
3445 | necessary. */ | |
3446 | if (value > h->u.c.size) | |
3447 | h->u.c.size = value; | |
3448 | } | |
3449 | } | |
3450 | } | |
3451 | ||
3452 | if (type == N_WEAKA | |
3453 | || type == N_WEAKT | |
3454 | || type == N_WEAKD | |
3455 | || type == N_WEAKB) | |
3456 | { | |
3457 | /* This symbol is weak but defined. We must pull it in if | |
3458 | the current link symbol is undefined, but we don't want | |
3459 | it if the current link symbol is common. */ | |
3460 | if (h->type == bfd_link_hash_undefined) | |
3461 | { | |
0e144ba7 AM |
3462 | if (!(*info->callbacks |
3463 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3464 | return FALSE; |
3465 | *pneeded = TRUE; | |
3466 | return TRUE; | |
3467 | } | |
3468 | } | |
3469 | } | |
3470 | ||
3471 | /* We do not need this object file. */ | |
3472 | return TRUE; | |
3473 | } | |
3474 | /* Check a single archive element to see if we need to include it in | |
3475 | the link. *PNEEDED is set according to whether this element is | |
3476 | needed in the link or not. This is called from | |
3477 | _bfd_generic_link_add_archive_symbols. */ | |
3478 | ||
3479 | static bfd_boolean | |
3480 | aout_link_check_archive_element (bfd *abfd, | |
3481 | struct bfd_link_info *info, | |
13e570f8 AM |
3482 | struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED, |
3483 | const char *name ATTRIBUTE_UNUSED, | |
116c20d2 NC |
3484 | bfd_boolean *pneeded) |
3485 | { | |
0e144ba7 AM |
3486 | bfd *oldbfd; |
3487 | bfd_boolean needed; | |
5d3236ee | 3488 | |
0e144ba7 | 3489 | if (!aout_get_external_symbols (abfd)) |
116c20d2 NC |
3490 | return FALSE; |
3491 | ||
0e144ba7 AM |
3492 | oldbfd = abfd; |
3493 | if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd)) | |
116c20d2 NC |
3494 | return FALSE; |
3495 | ||
0e144ba7 AM |
3496 | needed = *pneeded; |
3497 | if (needed) | |
116c20d2 | 3498 | { |
5d3236ee DK |
3499 | /* Potentially, the add_archive_element hook may have set a |
3500 | substitute BFD for us. */ | |
0e144ba7 AM |
3501 | if (abfd != oldbfd) |
3502 | { | |
3503 | if (!info->keep_memory | |
3504 | && !aout_link_free_symbols (oldbfd)) | |
3505 | return FALSE; | |
3506 | if (!aout_get_external_symbols (abfd)) | |
3507 | return FALSE; | |
3508 | } | |
3509 | if (!aout_link_add_symbols (abfd, info)) | |
116c20d2 NC |
3510 | return FALSE; |
3511 | } | |
3512 | ||
0e144ba7 | 3513 | if (!info->keep_memory || !needed) |
116c20d2 | 3514 | { |
0e144ba7 | 3515 | if (!aout_link_free_symbols (abfd)) |
116c20d2 NC |
3516 | return FALSE; |
3517 | } | |
3518 | ||
3519 | return TRUE; | |
3520 | } | |
3521 | ||
3522 | /* Given an a.out BFD, add symbols to the global hash table as | |
3523 | appropriate. */ | |
3524 | ||
3525 | bfd_boolean | |
3526 | NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info) | |
3527 | { | |
3528 | switch (bfd_get_format (abfd)) | |
3529 | { | |
3530 | case bfd_object: | |
3531 | return aout_link_add_object_symbols (abfd, info); | |
3532 | case bfd_archive: | |
3533 | return _bfd_generic_link_add_archive_symbols | |
3534 | (abfd, info, aout_link_check_archive_element); | |
3535 | default: | |
3536 | bfd_set_error (bfd_error_wrong_format); | |
3537 | return FALSE; | |
3538 | } | |
3539 | } | |
3540 | \f | |
3541 | /* A hash table used for header files with N_BINCL entries. */ | |
3542 | ||
3543 | struct aout_link_includes_table | |
3544 | { | |
3545 | struct bfd_hash_table root; | |
3546 | }; | |
3547 | ||
3548 | /* A linked list of totals that we have found for a particular header | |
3549 | file. */ | |
3550 | ||
3551 | struct aout_link_includes_totals | |
3552 | { | |
3553 | struct aout_link_includes_totals *next; | |
3554 | bfd_vma total; | |
3555 | }; | |
3556 | ||
3557 | /* An entry in the header file hash table. */ | |
3558 | ||
3559 | struct aout_link_includes_entry | |
3560 | { | |
3561 | struct bfd_hash_entry root; | |
3562 | /* List of totals we have found for this file. */ | |
3563 | struct aout_link_includes_totals *totals; | |
3564 | }; | |
3565 | ||
3566 | /* Look up an entry in an the header file hash table. */ | |
3567 | ||
3568 | #define aout_link_includes_lookup(table, string, create, copy) \ | |
3569 | ((struct aout_link_includes_entry *) \ | |
3570 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
3571 | ||
3572 | /* During the final link step we need to pass around a bunch of | |
3573 | information, so we do it in an instance of this structure. */ | |
3574 | ||
3575 | struct aout_final_link_info | |
3576 | { | |
3577 | /* General link information. */ | |
3578 | struct bfd_link_info *info; | |
3579 | /* Output bfd. */ | |
252b5132 RH |
3580 | bfd *output_bfd; |
3581 | /* Reloc file positions. */ | |
3582 | file_ptr treloff, dreloff; | |
3583 | /* File position of symbols. */ | |
3584 | file_ptr symoff; | |
3585 | /* String table. */ | |
3586 | struct bfd_strtab_hash *strtab; | |
3587 | /* Header file hash table. */ | |
3588 | struct aout_link_includes_table includes; | |
3589 | /* A buffer large enough to hold the contents of any section. */ | |
3590 | bfd_byte *contents; | |
3591 | /* A buffer large enough to hold the relocs of any section. */ | |
116c20d2 | 3592 | void * relocs; |
252b5132 RH |
3593 | /* A buffer large enough to hold the symbol map of any input BFD. */ |
3594 | int *symbol_map; | |
3595 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
3596 | struct external_nlist *output_syms; | |
3597 | }; | |
3598 | ||
252b5132 RH |
3599 | /* The function to create a new entry in the header file hash table. */ |
3600 | ||
3601 | static struct bfd_hash_entry * | |
116c20d2 NC |
3602 | aout_link_includes_newfunc (struct bfd_hash_entry *entry, |
3603 | struct bfd_hash_table *table, | |
3604 | const char *string) | |
252b5132 RH |
3605 | { |
3606 | struct aout_link_includes_entry *ret = | |
3607 | (struct aout_link_includes_entry *) entry; | |
3608 | ||
3609 | /* Allocate the structure if it has not already been allocated by a | |
3610 | subclass. */ | |
116c20d2 | 3611 | if (ret == NULL) |
a50b1753 NC |
3612 | ret = (struct aout_link_includes_entry *) |
3613 | bfd_hash_allocate (table, sizeof (* ret)); | |
116c20d2 NC |
3614 | if (ret == NULL) |
3615 | return NULL; | |
252b5132 RH |
3616 | |
3617 | /* Call the allocation method of the superclass. */ | |
3618 | ret = ((struct aout_link_includes_entry *) | |
3619 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
3620 | if (ret) | |
3621 | { | |
3622 | /* Set local fields. */ | |
3623 | ret->totals = NULL; | |
3624 | } | |
3625 | ||
3626 | return (struct bfd_hash_entry *) ret; | |
3627 | } | |
3628 | ||
116c20d2 NC |
3629 | /* Write out a symbol that was not associated with an a.out input |
3630 | object. */ | |
252b5132 | 3631 | |
116c20d2 | 3632 | static bfd_boolean |
7686d77d | 3633 | aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data) |
252b5132 | 3634 | { |
7686d77d | 3635 | struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh; |
57402f1e | 3636 | struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data; |
116c20d2 NC |
3637 | bfd *output_bfd; |
3638 | int type; | |
3639 | bfd_vma val; | |
3640 | struct external_nlist outsym; | |
3641 | bfd_size_type indx; | |
3642 | bfd_size_type amt; | |
252b5132 | 3643 | |
116c20d2 NC |
3644 | if (h->root.type == bfd_link_hash_warning) |
3645 | { | |
3646 | h = (struct aout_link_hash_entry *) h->root.u.i.link; | |
3647 | if (h->root.type == bfd_link_hash_new) | |
3648 | return TRUE; | |
3649 | } | |
252b5132 | 3650 | |
57402f1e | 3651 | output_bfd = flaginfo->output_bfd; |
252b5132 | 3652 | |
116c20d2 | 3653 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) |
252b5132 | 3654 | { |
116c20d2 | 3655 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) |
57402f1e | 3656 | (output_bfd, flaginfo->info, h))) |
252b5132 | 3657 | { |
116c20d2 NC |
3658 | /* FIXME: No way to handle errors. */ |
3659 | abort (); | |
252b5132 | 3660 | } |
116c20d2 | 3661 | } |
252b5132 | 3662 | |
116c20d2 NC |
3663 | if (h->written) |
3664 | return TRUE; | |
252b5132 | 3665 | |
116c20d2 | 3666 | h->written = TRUE; |
252b5132 | 3667 | |
116c20d2 NC |
3668 | /* An indx of -2 means the symbol must be written. */ |
3669 | if (h->indx != -2 | |
57402f1e NC |
3670 | && (flaginfo->info->strip == strip_all |
3671 | || (flaginfo->info->strip == strip_some | |
3672 | && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string, | |
116c20d2 NC |
3673 | FALSE, FALSE) == NULL))) |
3674 | return TRUE; | |
252b5132 | 3675 | |
116c20d2 | 3676 | switch (h->root.type) |
252b5132 | 3677 | { |
116c20d2 NC |
3678 | default: |
3679 | case bfd_link_hash_warning: | |
3680 | abort (); | |
3681 | /* Avoid variable not initialized warnings. */ | |
3682 | return TRUE; | |
3683 | case bfd_link_hash_new: | |
3684 | /* This can happen for set symbols when sets are not being | |
3685 | built. */ | |
3686 | return TRUE; | |
3687 | case bfd_link_hash_undefined: | |
3688 | type = N_UNDF | N_EXT; | |
3689 | val = 0; | |
3690 | break; | |
3691 | case bfd_link_hash_defined: | |
3692 | case bfd_link_hash_defweak: | |
3693 | { | |
3694 | asection *sec; | |
252b5132 | 3695 | |
116c20d2 NC |
3696 | sec = h->root.u.def.section->output_section; |
3697 | BFD_ASSERT (bfd_is_abs_section (sec) | |
3698 | || sec->owner == output_bfd); | |
3699 | if (sec == obj_textsec (output_bfd)) | |
3700 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; | |
3701 | else if (sec == obj_datasec (output_bfd)) | |
3702 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; | |
3703 | else if (sec == obj_bsssec (output_bfd)) | |
3704 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; | |
3705 | else | |
3706 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; | |
3707 | type |= N_EXT; | |
3708 | val = (h->root.u.def.value | |
3709 | + sec->vma | |
3710 | + h->root.u.def.section->output_offset); | |
3711 | } | |
3712 | break; | |
3713 | case bfd_link_hash_common: | |
3714 | type = N_UNDF | N_EXT; | |
3715 | val = h->root.u.c.size; | |
3716 | break; | |
3717 | case bfd_link_hash_undefweak: | |
3718 | type = N_WEAKU; | |
3719 | val = 0; | |
c38eb2a6 | 3720 | break; |
116c20d2 NC |
3721 | case bfd_link_hash_indirect: |
3722 | /* We ignore these symbols, since the indirected symbol is | |
3723 | already in the hash table. */ | |
3724 | return TRUE; | |
3725 | } | |
252b5132 | 3726 | |
116c20d2 NC |
3727 | H_PUT_8 (output_bfd, type, outsym.e_type); |
3728 | H_PUT_8 (output_bfd, 0, outsym.e_other); | |
3729 | H_PUT_16 (output_bfd, 0, outsym.e_desc); | |
57402f1e | 3730 | indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string, |
116c20d2 NC |
3731 | FALSE); |
3732 | if (indx == - (bfd_size_type) 1) | |
3733 | /* FIXME: No way to handle errors. */ | |
3734 | abort (); | |
252b5132 | 3735 | |
116c20d2 NC |
3736 | PUT_WORD (output_bfd, indx, outsym.e_strx); |
3737 | PUT_WORD (output_bfd, val, outsym.e_value); | |
252b5132 | 3738 | |
116c20d2 | 3739 | amt = EXTERNAL_NLIST_SIZE; |
57402f1e | 3740 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0 |
116c20d2 NC |
3741 | || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt) |
3742 | /* FIXME: No way to handle errors. */ | |
3743 | abort (); | |
252b5132 | 3744 | |
57402f1e | 3745 | flaginfo->symoff += EXTERNAL_NLIST_SIZE; |
116c20d2 NC |
3746 | h->indx = obj_aout_external_sym_count (output_bfd); |
3747 | ++obj_aout_external_sym_count (output_bfd); | |
252b5132 | 3748 | |
116c20d2 NC |
3749 | return TRUE; |
3750 | } | |
252b5132 | 3751 | |
116c20d2 | 3752 | /* Handle a link order which is supposed to generate a reloc. */ |
252b5132 | 3753 | |
116c20d2 | 3754 | static bfd_boolean |
57402f1e | 3755 | aout_link_reloc_link_order (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3756 | asection *o, |
3757 | struct bfd_link_order *p) | |
3758 | { | |
3759 | struct bfd_link_order_reloc *pr; | |
3760 | int r_index; | |
3761 | int r_extern; | |
3762 | reloc_howto_type *howto; | |
3763 | file_ptr *reloff_ptr = NULL; | |
3764 | struct reloc_std_external srel; | |
3765 | struct reloc_ext_external erel; | |
3766 | void * rel_ptr; | |
3767 | bfd_size_type amt; | |
252b5132 | 3768 | |
116c20d2 | 3769 | pr = p->u.reloc.p; |
252b5132 | 3770 | |
116c20d2 NC |
3771 | if (p->type == bfd_section_reloc_link_order) |
3772 | { | |
3773 | r_extern = 0; | |
3774 | if (bfd_is_abs_section (pr->u.section)) | |
3775 | r_index = N_ABS | N_EXT; | |
3776 | else | |
3777 | { | |
57402f1e | 3778 | BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd); |
116c20d2 NC |
3779 | r_index = pr->u.section->target_index; |
3780 | } | |
3781 | } | |
3782 | else | |
3783 | { | |
3784 | struct aout_link_hash_entry *h; | |
252b5132 | 3785 | |
116c20d2 NC |
3786 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); |
3787 | r_extern = 1; | |
3788 | h = ((struct aout_link_hash_entry *) | |
57402f1e | 3789 | bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info, |
116c20d2 NC |
3790 | pr->u.name, FALSE, FALSE, TRUE)); |
3791 | if (h != NULL | |
3792 | && h->indx >= 0) | |
3793 | r_index = h->indx; | |
3794 | else if (h != NULL) | |
3795 | { | |
3796 | /* We decided to strip this symbol, but it turns out that we | |
3797 | can't. Note that we lose the other and desc information | |
3798 | here. I don't think that will ever matter for a global | |
3799 | symbol. */ | |
3800 | h->indx = -2; | |
3801 | h->written = FALSE; | |
57402f1e | 3802 | if (!aout_link_write_other_symbol (&h->root.root, flaginfo)) |
116c20d2 NC |
3803 | return FALSE; |
3804 | r_index = h->indx; | |
3805 | } | |
3806 | else | |
3807 | { | |
1a72702b AM |
3808 | (*flaginfo->info->callbacks->unattached_reloc) |
3809 | (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0); | |
116c20d2 NC |
3810 | r_index = 0; |
3811 | } | |
3812 | } | |
252b5132 | 3813 | |
57402f1e | 3814 | howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc); |
116c20d2 | 3815 | if (howto == 0) |
252b5132 | 3816 | { |
116c20d2 NC |
3817 | bfd_set_error (bfd_error_bad_value); |
3818 | return FALSE; | |
252b5132 RH |
3819 | } |
3820 | ||
57402f1e NC |
3821 | if (o == obj_textsec (flaginfo->output_bfd)) |
3822 | reloff_ptr = &flaginfo->treloff; | |
3823 | else if (o == obj_datasec (flaginfo->output_bfd)) | |
3824 | reloff_ptr = &flaginfo->dreloff; | |
116c20d2 NC |
3825 | else |
3826 | abort (); | |
3827 | ||
57402f1e | 3828 | if (obj_reloc_entry_size (flaginfo->output_bfd) == RELOC_STD_SIZE) |
252b5132 | 3829 | { |
116c20d2 | 3830 | #ifdef MY_put_reloc |
57402f1e | 3831 | MY_put_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, howto, |
116c20d2 NC |
3832 | &srel); |
3833 | #else | |
3834 | { | |
3835 | int r_pcrel; | |
3836 | int r_baserel; | |
3837 | int r_jmptable; | |
3838 | int r_relative; | |
3839 | int r_length; | |
252b5132 | 3840 | |
116c20d2 NC |
3841 | r_pcrel = (int) howto->pc_relative; |
3842 | r_baserel = (howto->type & 8) != 0; | |
3843 | r_jmptable = (howto->type & 16) != 0; | |
3844 | r_relative = (howto->type & 32) != 0; | |
3845 | r_length = howto->size; | |
252b5132 | 3846 | |
57402f1e NC |
3847 | PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address); |
3848 | if (bfd_header_big_endian (flaginfo->output_bfd)) | |
116c20d2 NC |
3849 | { |
3850 | srel.r_index[0] = r_index >> 16; | |
3851 | srel.r_index[1] = r_index >> 8; | |
3852 | srel.r_index[2] = r_index; | |
3853 | srel.r_type[0] = | |
3854 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
3855 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
3856 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
3857 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
3858 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
3859 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
3860 | } | |
3861 | else | |
3862 | { | |
3863 | srel.r_index[2] = r_index >> 16; | |
3864 | srel.r_index[1] = r_index >> 8; | |
3865 | srel.r_index[0] = r_index; | |
3866 | srel.r_type[0] = | |
3867 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
3868 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
3869 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
3870 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
3871 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
3872 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
3873 | } | |
3874 | } | |
3875 | #endif | |
3876 | rel_ptr = (void *) &srel; | |
252b5132 | 3877 | |
116c20d2 NC |
3878 | /* We have to write the addend into the object file, since |
3879 | standard a.out relocs are in place. It would be more | |
3880 | reliable if we had the current contents of the file here, | |
3881 | rather than assuming zeroes, but we can't read the file since | |
3882 | it was opened using bfd_openw. */ | |
3883 | if (pr->addend != 0) | |
252b5132 | 3884 | { |
116c20d2 NC |
3885 | bfd_size_type size; |
3886 | bfd_reloc_status_type r; | |
3887 | bfd_byte *buf; | |
3888 | bfd_boolean ok; | |
3889 | ||
3890 | size = bfd_get_reloc_size (howto); | |
a50b1753 | 3891 | buf = (bfd_byte *) bfd_zmalloc (size); |
6346d5ca | 3892 | if (buf == NULL && size != 0) |
116c20d2 | 3893 | return FALSE; |
57402f1e | 3894 | r = MY_relocate_contents (howto, flaginfo->output_bfd, |
116c20d2 NC |
3895 | (bfd_vma) pr->addend, buf); |
3896 | switch (r) | |
252b5132 | 3897 | { |
116c20d2 NC |
3898 | case bfd_reloc_ok: |
3899 | break; | |
3900 | default: | |
3901 | case bfd_reloc_outofrange: | |
3902 | abort (); | |
3903 | case bfd_reloc_overflow: | |
1a72702b AM |
3904 | (*flaginfo->info->callbacks->reloc_overflow) |
3905 | (flaginfo->info, NULL, | |
3906 | (p->type == bfd_section_reloc_link_order | |
3907 | ? bfd_section_name (flaginfo->output_bfd, | |
3908 | pr->u.section) | |
3909 | : pr->u.name), | |
3910 | howto->name, pr->addend, NULL, NULL, (bfd_vma) 0); | |
116c20d2 | 3911 | break; |
252b5132 | 3912 | } |
57402f1e | 3913 | ok = bfd_set_section_contents (flaginfo->output_bfd, o, (void *) buf, |
116c20d2 NC |
3914 | (file_ptr) p->offset, size); |
3915 | free (buf); | |
3916 | if (! ok) | |
3917 | return FALSE; | |
252b5132 RH |
3918 | } |
3919 | } | |
116c20d2 | 3920 | else |
252b5132 | 3921 | { |
116c20d2 | 3922 | #ifdef MY_put_ext_reloc |
57402f1e | 3923 | MY_put_ext_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, |
116c20d2 NC |
3924 | howto, &erel, pr->addend); |
3925 | #else | |
57402f1e | 3926 | PUT_WORD (flaginfo->output_bfd, p->offset, erel.r_address); |
252b5132 | 3927 | |
57402f1e | 3928 | if (bfd_header_big_endian (flaginfo->output_bfd)) |
116c20d2 NC |
3929 | { |
3930 | erel.r_index[0] = r_index >> 16; | |
3931 | erel.r_index[1] = r_index >> 8; | |
3932 | erel.r_index[2] = r_index; | |
3933 | erel.r_type[0] = | |
3934 | ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
3935 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
3936 | } | |
3937 | else | |
3938 | { | |
3939 | erel.r_index[2] = r_index >> 16; | |
3940 | erel.r_index[1] = r_index >> 8; | |
3941 | erel.r_index[0] = r_index; | |
3942 | erel.r_type[0] = | |
3943 | (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
3944 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
3945 | } | |
252b5132 | 3946 | |
57402f1e | 3947 | PUT_WORD (flaginfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend); |
116c20d2 | 3948 | #endif /* MY_put_ext_reloc */ |
252b5132 | 3949 | |
116c20d2 | 3950 | rel_ptr = (void *) &erel; |
252b5132 | 3951 | } |
252b5132 | 3952 | |
57402f1e NC |
3953 | amt = obj_reloc_entry_size (flaginfo->output_bfd); |
3954 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 | |
3955 | || bfd_bwrite (rel_ptr, amt, flaginfo->output_bfd) != amt) | |
116c20d2 | 3956 | return FALSE; |
252b5132 | 3957 | |
57402f1e | 3958 | *reloff_ptr += obj_reloc_entry_size (flaginfo->output_bfd); |
252b5132 | 3959 | |
116c20d2 NC |
3960 | /* Assert that the relocs have not run into the symbols, and that n |
3961 | the text relocs have not run into the data relocs. */ | |
57402f1e NC |
3962 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
3963 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 3964 | || (*reloff_ptr |
57402f1e | 3965 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
116c20d2 NC |
3966 | |
3967 | return TRUE; | |
252b5132 RH |
3968 | } |
3969 | ||
116c20d2 | 3970 | /* Get the section corresponding to a reloc index. */ |
252b5132 | 3971 | |
116c20d2 NC |
3972 | static INLINE asection * |
3973 | aout_reloc_index_to_section (bfd *abfd, int indx) | |
252b5132 | 3974 | { |
116c20d2 | 3975 | switch (indx & N_TYPE) |
252b5132 | 3976 | { |
116c20d2 NC |
3977 | case N_TEXT: return obj_textsec (abfd); |
3978 | case N_DATA: return obj_datasec (abfd); | |
3979 | case N_BSS: return obj_bsssec (abfd); | |
3980 | case N_ABS: | |
3981 | case N_UNDF: return bfd_abs_section_ptr; | |
3982 | default: abort (); | |
252b5132 | 3983 | } |
116c20d2 | 3984 | return NULL; |
252b5132 RH |
3985 | } |
3986 | ||
116c20d2 | 3987 | /* Relocate an a.out section using standard a.out relocs. */ |
252b5132 | 3988 | |
b34976b6 | 3989 | static bfd_boolean |
57402f1e | 3990 | aout_link_input_section_std (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3991 | bfd *input_bfd, |
3992 | asection *input_section, | |
3993 | struct reloc_std_external *relocs, | |
3994 | bfd_size_type rel_size, | |
3995 | bfd_byte *contents) | |
252b5132 | 3996 | { |
116c20d2 NC |
3997 | bfd_boolean (*check_dynamic_reloc) |
3998 | (struct bfd_link_info *, bfd *, asection *, | |
3999 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
4000 | bfd_vma *); | |
252b5132 | 4001 | bfd *output_bfd; |
116c20d2 NC |
4002 | bfd_boolean relocatable; |
4003 | struct external_nlist *syms; | |
252b5132 | 4004 | char *strings; |
116c20d2 | 4005 | struct aout_link_hash_entry **sym_hashes; |
252b5132 | 4006 | int *symbol_map; |
116c20d2 NC |
4007 | bfd_size_type reloc_count; |
4008 | struct reloc_std_external *rel; | |
4009 | struct reloc_std_external *rel_end; | |
252b5132 | 4010 | |
57402f1e | 4011 | output_bfd = flaginfo->output_bfd; |
116c20d2 | 4012 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
252b5132 | 4013 | |
116c20d2 NC |
4014 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE); |
4015 | BFD_ASSERT (input_bfd->xvec->header_byteorder | |
4016 | == output_bfd->xvec->header_byteorder); | |
252b5132 | 4017 | |
0e1862bb | 4018 | relocatable = bfd_link_relocatable (flaginfo->info); |
116c20d2 NC |
4019 | syms = obj_aout_external_syms (input_bfd); |
4020 | strings = obj_aout_external_strings (input_bfd); | |
4021 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4022 | symbol_map = flaginfo->symbol_map; |
116c20d2 NC |
4023 | |
4024 | reloc_count = rel_size / RELOC_STD_SIZE; | |
4025 | rel = relocs; | |
4026 | rel_end = rel + reloc_count; | |
4027 | for (; rel < rel_end; rel++) | |
252b5132 | 4028 | { |
116c20d2 NC |
4029 | bfd_vma r_addr; |
4030 | int r_index; | |
4031 | int r_extern; | |
4032 | int r_pcrel; | |
4033 | int r_baserel = 0; | |
4034 | reloc_howto_type *howto; | |
4035 | struct aout_link_hash_entry *h = NULL; | |
4036 | bfd_vma relocation; | |
4037 | bfd_reloc_status_type r; | |
252b5132 | 4038 | |
116c20d2 | 4039 | r_addr = GET_SWORD (input_bfd, rel->r_address); |
252b5132 | 4040 | |
116c20d2 NC |
4041 | #ifdef MY_reloc_howto |
4042 | howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel); | |
4043 | #else | |
4044 | { | |
4045 | int r_jmptable; | |
4046 | int r_relative; | |
4047 | int r_length; | |
4048 | unsigned int howto_idx; | |
252b5132 | 4049 | |
116c20d2 NC |
4050 | if (bfd_header_big_endian (input_bfd)) |
4051 | { | |
4052 | r_index = (((unsigned int) rel->r_index[0] << 16) | |
4053 | | ((unsigned int) rel->r_index[1] << 8) | |
4054 | | rel->r_index[2]); | |
4055 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
4056 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
4057 | r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
4058 | r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
4059 | r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
4060 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
4061 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
4062 | } | |
4063 | else | |
4064 | { | |
4065 | r_index = (((unsigned int) rel->r_index[2] << 16) | |
4066 | | ((unsigned int) rel->r_index[1] << 8) | |
4067 | | rel->r_index[0]); | |
4068 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
4069 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
4070 | r_baserel = (0 != (rel->r_type[0] | |
4071 | & RELOC_STD_BITS_BASEREL_LITTLE)); | |
4072 | r_jmptable= (0 != (rel->r_type[0] | |
4073 | & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
4074 | r_relative= (0 != (rel->r_type[0] | |
4075 | & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
4076 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
4077 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
4078 | } | |
252b5132 | 4079 | |
116c20d2 NC |
4080 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel |
4081 | + 16 * r_jmptable + 32 * r_relative); | |
ad756e3f AM |
4082 | if (howto_idx < TABLE_SIZE (howto_table_std)) |
4083 | howto = howto_table_std + howto_idx; | |
4084 | else | |
4085 | howto = NULL; | |
116c20d2 NC |
4086 | } |
4087 | #endif | |
252b5132 | 4088 | |
ad756e3f AM |
4089 | if (howto == NULL) |
4090 | { | |
57402f1e | 4091 | (*flaginfo->info->callbacks->einfo) |
ad756e3f AM |
4092 | (_("%P: %B: unexpected relocation type\n"), input_bfd); |
4093 | bfd_set_error (bfd_error_bad_value); | |
4094 | return FALSE; | |
4095 | } | |
4096 | ||
116c20d2 | 4097 | if (relocatable) |
252b5132 | 4098 | { |
116c20d2 NC |
4099 | /* We are generating a relocatable output file, and must |
4100 | modify the reloc accordingly. */ | |
4101 | if (r_extern) | |
252b5132 | 4102 | { |
116c20d2 NC |
4103 | /* If we know the symbol this relocation is against, |
4104 | convert it into a relocation against a section. This | |
4105 | is what the native linker does. */ | |
4106 | h = sym_hashes[r_index]; | |
4107 | if (h != NULL | |
4108 | && (h->root.type == bfd_link_hash_defined | |
4109 | || h->root.type == bfd_link_hash_defweak)) | |
252b5132 | 4110 | { |
252b5132 RH |
4111 | asection *output_section; |
4112 | ||
116c20d2 NC |
4113 | /* Change the r_extern value. */ |
4114 | if (bfd_header_big_endian (output_bfd)) | |
4115 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG; | |
4116 | else | |
4117 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE; | |
252b5132 | 4118 | |
116c20d2 NC |
4119 | /* Compute a new r_index. */ |
4120 | output_section = h->root.u.def.section->output_section; | |
252b5132 | 4121 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 | 4122 | r_index = N_TEXT; |
252b5132 | 4123 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 | 4124 | r_index = N_DATA; |
252b5132 | 4125 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 | 4126 | r_index = N_BSS; |
252b5132 | 4127 | else |
116c20d2 | 4128 | r_index = N_ABS; |
252b5132 | 4129 | |
116c20d2 NC |
4130 | /* Add the symbol value and the section VMA to the |
4131 | addend stored in the contents. */ | |
4132 | relocation = (h->root.u.def.value | |
4133 | + output_section->vma | |
4134 | + h->root.u.def.section->output_offset); | |
252b5132 | 4135 | } |
116c20d2 | 4136 | else |
252b5132 | 4137 | { |
116c20d2 NC |
4138 | /* We must change r_index according to the symbol |
4139 | map. */ | |
4140 | r_index = symbol_map[r_index]; | |
252b5132 | 4141 | |
116c20d2 | 4142 | if (r_index == -1) |
252b5132 | 4143 | { |
116c20d2 | 4144 | if (h != NULL) |
252b5132 | 4145 | { |
116c20d2 NC |
4146 | /* We decided to strip this symbol, but it |
4147 | turns out that we can't. Note that we | |
4148 | lose the other and desc information here. | |
4149 | I don't think that will ever matter for a | |
4150 | global symbol. */ | |
4151 | if (h->indx < 0) | |
252b5132 | 4152 | { |
116c20d2 NC |
4153 | h->indx = -2; |
4154 | h->written = FALSE; | |
7686d77d | 4155 | if (!aout_link_write_other_symbol (&h->root.root, |
57402f1e | 4156 | flaginfo)) |
116c20d2 | 4157 | return FALSE; |
252b5132 | 4158 | } |
116c20d2 NC |
4159 | r_index = h->indx; |
4160 | } | |
4161 | else | |
4162 | { | |
4163 | const char *name; | |
4164 | ||
4165 | name = strings + GET_WORD (input_bfd, | |
4166 | syms[r_index].e_strx); | |
1a72702b AM |
4167 | (*flaginfo->info->callbacks->unattached_reloc) |
4168 | (flaginfo->info, name, | |
4169 | input_bfd, input_section, r_addr); | |
116c20d2 | 4170 | r_index = 0; |
252b5132 RH |
4171 | } |
4172 | } | |
116c20d2 NC |
4173 | |
4174 | relocation = 0; | |
252b5132 RH |
4175 | } |
4176 | ||
116c20d2 NC |
4177 | /* Write out the new r_index value. */ |
4178 | if (bfd_header_big_endian (output_bfd)) | |
252b5132 | 4179 | { |
116c20d2 NC |
4180 | rel->r_index[0] = r_index >> 16; |
4181 | rel->r_index[1] = r_index >> 8; | |
4182 | rel->r_index[2] = r_index; | |
252b5132 RH |
4183 | } |
4184 | else | |
4185 | { | |
116c20d2 NC |
4186 | rel->r_index[2] = r_index >> 16; |
4187 | rel->r_index[1] = r_index >> 8; | |
4188 | rel->r_index[0] = r_index; | |
252b5132 RH |
4189 | } |
4190 | } | |
252b5132 | 4191 | else |
116c20d2 NC |
4192 | { |
4193 | asection *section; | |
252b5132 | 4194 | |
116c20d2 NC |
4195 | /* This is a relocation against a section. We must |
4196 | adjust by the amount that the section moved. */ | |
4197 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4198 | relocation = (section->output_section->vma | |
4199 | + section->output_offset | |
4200 | - section->vma); | |
4201 | } | |
252b5132 | 4202 | |
116c20d2 NC |
4203 | /* Change the address of the relocation. */ |
4204 | PUT_WORD (output_bfd, | |
4205 | r_addr + input_section->output_offset, | |
4206 | rel->r_address); | |
252b5132 | 4207 | |
116c20d2 NC |
4208 | /* Adjust a PC relative relocation by removing the reference |
4209 | to the original address in the section and including the | |
4210 | reference to the new address. */ | |
4211 | if (r_pcrel) | |
4212 | relocation -= (input_section->output_section->vma | |
4213 | + input_section->output_offset | |
4214 | - input_section->vma); | |
e92d460e | 4215 | |
116c20d2 NC |
4216 | #ifdef MY_relocatable_reloc |
4217 | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); | |
4218 | #endif | |
252b5132 | 4219 | |
116c20d2 NC |
4220 | if (relocation == 0) |
4221 | r = bfd_reloc_ok; | |
4222 | else | |
4223 | r = MY_relocate_contents (howto, | |
4224 | input_bfd, relocation, | |
4225 | contents + r_addr); | |
252b5132 | 4226 | } |
116c20d2 NC |
4227 | else |
4228 | { | |
4229 | bfd_boolean hundef; | |
252b5132 | 4230 | |
116c20d2 NC |
4231 | /* We are generating an executable, and must do a full |
4232 | relocation. */ | |
4233 | hundef = FALSE; | |
252b5132 | 4234 | |
116c20d2 NC |
4235 | if (r_extern) |
4236 | { | |
4237 | h = sym_hashes[r_index]; | |
252b5132 | 4238 | |
116c20d2 NC |
4239 | if (h != NULL |
4240 | && (h->root.type == bfd_link_hash_defined | |
4241 | || h->root.type == bfd_link_hash_defweak)) | |
4242 | { | |
4243 | relocation = (h->root.u.def.value | |
4244 | + h->root.u.def.section->output_section->vma | |
4245 | + h->root.u.def.section->output_offset); | |
4246 | } | |
4247 | else if (h != NULL | |
4248 | && h->root.type == bfd_link_hash_undefweak) | |
4249 | relocation = 0; | |
4250 | else | |
4251 | { | |
4252 | hundef = TRUE; | |
4253 | relocation = 0; | |
4254 | } | |
4255 | } | |
4256 | else | |
4257 | { | |
4258 | asection *section; | |
252b5132 | 4259 | |
116c20d2 NC |
4260 | section = aout_reloc_index_to_section (input_bfd, r_index); |
4261 | relocation = (section->output_section->vma | |
4262 | + section->output_offset | |
4263 | - section->vma); | |
4264 | if (r_pcrel) | |
4265 | relocation += input_section->vma; | |
4266 | } | |
252b5132 | 4267 | |
116c20d2 NC |
4268 | if (check_dynamic_reloc != NULL) |
4269 | { | |
4270 | bfd_boolean skip; | |
252b5132 | 4271 | |
116c20d2 | 4272 | if (! ((*check_dynamic_reloc) |
57402f1e | 4273 | (flaginfo->info, input_bfd, input_section, h, |
116c20d2 NC |
4274 | (void *) rel, contents, &skip, &relocation))) |
4275 | return FALSE; | |
4276 | if (skip) | |
4277 | continue; | |
4278 | } | |
252b5132 | 4279 | |
116c20d2 NC |
4280 | /* Now warn if a global symbol is undefined. We could not |
4281 | do this earlier, because check_dynamic_reloc might want | |
4282 | to skip this reloc. */ | |
0e1862bb | 4283 | if (hundef && ! bfd_link_pic (flaginfo->info) && ! r_baserel) |
116c20d2 NC |
4284 | { |
4285 | const char *name; | |
252b5132 | 4286 | |
116c20d2 NC |
4287 | if (h != NULL) |
4288 | name = h->root.root.string; | |
4289 | else | |
4290 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
1a72702b AM |
4291 | (*flaginfo->info->callbacks->undefined_symbol) |
4292 | (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE); | |
116c20d2 | 4293 | } |
252b5132 | 4294 | |
116c20d2 NC |
4295 | r = MY_final_link_relocate (howto, |
4296 | input_bfd, input_section, | |
4297 | contents, r_addr, relocation, | |
4298 | (bfd_vma) 0); | |
252b5132 | 4299 | } |
252b5132 | 4300 | |
116c20d2 NC |
4301 | if (r != bfd_reloc_ok) |
4302 | { | |
4303 | switch (r) | |
4304 | { | |
4305 | default: | |
4306 | case bfd_reloc_outofrange: | |
4307 | abort (); | |
4308 | case bfd_reloc_overflow: | |
4309 | { | |
4310 | const char *name; | |
252b5132 | 4311 | |
116c20d2 NC |
4312 | if (h != NULL) |
4313 | name = NULL; | |
4314 | else if (r_extern) | |
4315 | name = strings + GET_WORD (input_bfd, | |
4316 | syms[r_index].e_strx); | |
4317 | else | |
4318 | { | |
4319 | asection *s; | |
252b5132 | 4320 | |
116c20d2 NC |
4321 | s = aout_reloc_index_to_section (input_bfd, r_index); |
4322 | name = bfd_section_name (input_bfd, s); | |
4323 | } | |
1a72702b AM |
4324 | (*flaginfo->info->callbacks->reloc_overflow) |
4325 | (flaginfo->info, (h ? &h->root : NULL), name, howto->name, | |
4326 | (bfd_vma) 0, input_bfd, input_section, r_addr); | |
116c20d2 NC |
4327 | } |
4328 | break; | |
4329 | } | |
4330 | } | |
252b5132 RH |
4331 | } |
4332 | ||
b34976b6 | 4333 | return TRUE; |
252b5132 RH |
4334 | } |
4335 | ||
116c20d2 | 4336 | /* Relocate an a.out section using extended a.out relocs. */ |
252b5132 | 4337 | |
b34976b6 | 4338 | static bfd_boolean |
57402f1e | 4339 | aout_link_input_section_ext (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
4340 | bfd *input_bfd, |
4341 | asection *input_section, | |
4342 | struct reloc_ext_external *relocs, | |
4343 | bfd_size_type rel_size, | |
4344 | bfd_byte *contents) | |
252b5132 | 4345 | { |
b34976b6 | 4346 | bfd_boolean (*check_dynamic_reloc) |
116c20d2 NC |
4347 | (struct bfd_link_info *, bfd *, asection *, |
4348 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
4349 | bfd_vma *); | |
252b5132 | 4350 | bfd *output_bfd; |
1049f94e | 4351 | bfd_boolean relocatable; |
252b5132 RH |
4352 | struct external_nlist *syms; |
4353 | char *strings; | |
4354 | struct aout_link_hash_entry **sym_hashes; | |
4355 | int *symbol_map; | |
4356 | bfd_size_type reloc_count; | |
116c20d2 NC |
4357 | struct reloc_ext_external *rel; |
4358 | struct reloc_ext_external *rel_end; | |
252b5132 | 4359 | |
57402f1e | 4360 | output_bfd = flaginfo->output_bfd; |
252b5132 RH |
4361 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
4362 | ||
116c20d2 | 4363 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE); |
252b5132 RH |
4364 | BFD_ASSERT (input_bfd->xvec->header_byteorder |
4365 | == output_bfd->xvec->header_byteorder); | |
4366 | ||
0e1862bb | 4367 | relocatable = bfd_link_relocatable (flaginfo->info); |
252b5132 RH |
4368 | syms = obj_aout_external_syms (input_bfd); |
4369 | strings = obj_aout_external_strings (input_bfd); | |
4370 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4371 | symbol_map = flaginfo->symbol_map; |
252b5132 | 4372 | |
116c20d2 | 4373 | reloc_count = rel_size / RELOC_EXT_SIZE; |
252b5132 RH |
4374 | rel = relocs; |
4375 | rel_end = rel + reloc_count; | |
4376 | for (; rel < rel_end; rel++) | |
4377 | { | |
4378 | bfd_vma r_addr; | |
4379 | int r_index; | |
4380 | int r_extern; | |
116c20d2 NC |
4381 | unsigned int r_type; |
4382 | bfd_vma r_addend; | |
252b5132 | 4383 | struct aout_link_hash_entry *h = NULL; |
116c20d2 | 4384 | asection *r_section = NULL; |
252b5132 | 4385 | bfd_vma relocation; |
252b5132 RH |
4386 | |
4387 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
4388 | ||
116c20d2 NC |
4389 | if (bfd_header_big_endian (input_bfd)) |
4390 | { | |
4391 | r_index = (((unsigned int) rel->r_index[0] << 16) | |
4392 | | ((unsigned int) rel->r_index[1] << 8) | |
4393 | | rel->r_index[2]); | |
4394 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
4395 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
4396 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
4397 | } | |
4398 | else | |
4399 | { | |
4400 | r_index = (((unsigned int) rel->r_index[2] << 16) | |
4401 | | ((unsigned int) rel->r_index[1] << 8) | |
4402 | | rel->r_index[0]); | |
4403 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
4404 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
4405 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
4406 | } | |
252b5132 | 4407 | |
116c20d2 | 4408 | r_addend = GET_SWORD (input_bfd, rel->r_addend); |
252b5132 | 4409 | |
ad756e3f AM |
4410 | if (r_type >= TABLE_SIZE (howto_table_ext)) |
4411 | { | |
57402f1e | 4412 | (*flaginfo->info->callbacks->einfo) |
ad756e3f AM |
4413 | (_("%P: %B: unexpected relocation type\n"), input_bfd); |
4414 | bfd_set_error (bfd_error_bad_value); | |
4415 | return FALSE; | |
4416 | } | |
252b5132 | 4417 | |
1049f94e | 4418 | if (relocatable) |
252b5132 | 4419 | { |
1049f94e | 4420 | /* We are generating a relocatable output file, and must |
252b5132 | 4421 | modify the reloc accordingly. */ |
116c20d2 NC |
4422 | if (r_extern |
4423 | || r_type == (unsigned int) RELOC_BASE10 | |
4424 | || r_type == (unsigned int) RELOC_BASE13 | |
4425 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
4426 | { |
4427 | /* If we know the symbol this relocation is against, | |
4428 | convert it into a relocation against a section. This | |
4429 | is what the native linker does. */ | |
116c20d2 NC |
4430 | if (r_type == (unsigned int) RELOC_BASE10 |
4431 | || r_type == (unsigned int) RELOC_BASE13 | |
4432 | || r_type == (unsigned int) RELOC_BASE22) | |
4433 | h = NULL; | |
4434 | else | |
4435 | h = sym_hashes[r_index]; | |
4436 | if (h != NULL | |
252b5132 RH |
4437 | && (h->root.type == bfd_link_hash_defined |
4438 | || h->root.type == bfd_link_hash_defweak)) | |
4439 | { | |
4440 | asection *output_section; | |
4441 | ||
4442 | /* Change the r_extern value. */ | |
4443 | if (bfd_header_big_endian (output_bfd)) | |
116c20d2 | 4444 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG; |
252b5132 | 4445 | else |
116c20d2 | 4446 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE; |
252b5132 RH |
4447 | |
4448 | /* Compute a new r_index. */ | |
4449 | output_section = h->root.u.def.section->output_section; | |
4450 | if (output_section == obj_textsec (output_bfd)) | |
4451 | r_index = N_TEXT; | |
4452 | else if (output_section == obj_datasec (output_bfd)) | |
4453 | r_index = N_DATA; | |
4454 | else if (output_section == obj_bsssec (output_bfd)) | |
4455 | r_index = N_BSS; | |
4456 | else | |
4457 | r_index = N_ABS; | |
4458 | ||
4459 | /* Add the symbol value and the section VMA to the | |
116c20d2 | 4460 | addend. */ |
252b5132 RH |
4461 | relocation = (h->root.u.def.value |
4462 | + output_section->vma | |
4463 | + h->root.u.def.section->output_offset); | |
116c20d2 NC |
4464 | |
4465 | /* Now RELOCATION is the VMA of the final | |
4466 | destination. If this is a PC relative reloc, | |
4467 | then ADDEND is the negative of the source VMA. | |
4468 | We want to set ADDEND to the difference between | |
4469 | the destination VMA and the source VMA, which | |
4470 | means we must adjust RELOCATION by the change in | |
4471 | the source VMA. This is done below. */ | |
252b5132 RH |
4472 | } |
4473 | else | |
4474 | { | |
4475 | /* We must change r_index according to the symbol | |
4476 | map. */ | |
4477 | r_index = symbol_map[r_index]; | |
4478 | ||
4479 | if (r_index == -1) | |
4480 | { | |
4481 | if (h != NULL) | |
4482 | { | |
4483 | /* We decided to strip this symbol, but it | |
4484 | turns out that we can't. Note that we | |
4485 | lose the other and desc information here. | |
4486 | I don't think that will ever matter for a | |
4487 | global symbol. */ | |
4488 | if (h->indx < 0) | |
4489 | { | |
4490 | h->indx = -2; | |
b34976b6 | 4491 | h->written = FALSE; |
7686d77d | 4492 | if (!aout_link_write_other_symbol (&h->root.root, |
57402f1e | 4493 | flaginfo)) |
b34976b6 | 4494 | return FALSE; |
252b5132 RH |
4495 | } |
4496 | r_index = h->indx; | |
4497 | } | |
4498 | else | |
4499 | { | |
4500 | const char *name; | |
4501 | ||
4502 | name = strings + GET_WORD (input_bfd, | |
4503 | syms[r_index].e_strx); | |
1a72702b AM |
4504 | (*flaginfo->info->callbacks->unattached_reloc) |
4505 | (flaginfo->info, name, | |
4506 | input_bfd, input_section, r_addr); | |
252b5132 RH |
4507 | r_index = 0; |
4508 | } | |
4509 | } | |
4510 | ||
4511 | relocation = 0; | |
116c20d2 NC |
4512 | |
4513 | /* If this is a PC relative reloc, then the addend | |
4514 | is the negative of the source VMA. We must | |
4515 | adjust it by the change in the source VMA. This | |
4516 | is done below. */ | |
252b5132 RH |
4517 | } |
4518 | ||
4519 | /* Write out the new r_index value. */ | |
4520 | if (bfd_header_big_endian (output_bfd)) | |
4521 | { | |
4522 | rel->r_index[0] = r_index >> 16; | |
4523 | rel->r_index[1] = r_index >> 8; | |
4524 | rel->r_index[2] = r_index; | |
4525 | } | |
4526 | else | |
4527 | { | |
4528 | rel->r_index[2] = r_index >> 16; | |
4529 | rel->r_index[1] = r_index >> 8; | |
4530 | rel->r_index[0] = r_index; | |
4531 | } | |
4532 | } | |
4533 | else | |
4534 | { | |
252b5132 RH |
4535 | /* This is a relocation against a section. We must |
4536 | adjust by the amount that the section moved. */ | |
116c20d2 NC |
4537 | r_section = aout_reloc_index_to_section (input_bfd, r_index); |
4538 | relocation = (r_section->output_section->vma | |
4539 | + r_section->output_offset | |
4540 | - r_section->vma); | |
252b5132 | 4541 | |
116c20d2 NC |
4542 | /* If this is a PC relative reloc, then the addend is |
4543 | the difference in VMA between the destination and the | |
4544 | source. We have just adjusted for the change in VMA | |
4545 | of the destination, so we must also adjust by the | |
4546 | change in VMA of the source. This is done below. */ | |
4547 | } | |
252b5132 | 4548 | |
116c20d2 NC |
4549 | /* As described above, we must always adjust a PC relative |
4550 | reloc by the change in VMA of the source. However, if | |
4551 | pcrel_offset is set, then the addend does not include the | |
4552 | location within the section, in which case we don't need | |
4553 | to adjust anything. */ | |
4554 | if (howto_table_ext[r_type].pc_relative | |
4555 | && ! howto_table_ext[r_type].pcrel_offset) | |
252b5132 RH |
4556 | relocation -= (input_section->output_section->vma |
4557 | + input_section->output_offset | |
4558 | - input_section->vma); | |
4559 | ||
116c20d2 NC |
4560 | /* Change the addend if necessary. */ |
4561 | if (relocation != 0) | |
4562 | PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend); | |
252b5132 | 4563 | |
116c20d2 NC |
4564 | /* Change the address of the relocation. */ |
4565 | PUT_WORD (output_bfd, | |
4566 | r_addr + input_section->output_offset, | |
4567 | rel->r_address); | |
252b5132 RH |
4568 | } |
4569 | else | |
4570 | { | |
b34976b6 | 4571 | bfd_boolean hundef; |
116c20d2 | 4572 | bfd_reloc_status_type r; |
252b5132 RH |
4573 | |
4574 | /* We are generating an executable, and must do a full | |
4575 | relocation. */ | |
b34976b6 | 4576 | hundef = FALSE; |
252b5132 RH |
4577 | |
4578 | if (r_extern) | |
4579 | { | |
4580 | h = sym_hashes[r_index]; | |
4581 | ||
116c20d2 | 4582 | if (h != NULL |
252b5132 RH |
4583 | && (h->root.type == bfd_link_hash_defined |
4584 | || h->root.type == bfd_link_hash_defweak)) | |
4585 | { | |
4586 | relocation = (h->root.u.def.value | |
4587 | + h->root.u.def.section->output_section->vma | |
4588 | + h->root.u.def.section->output_offset); | |
4589 | } | |
116c20d2 | 4590 | else if (h != NULL |
252b5132 RH |
4591 | && h->root.type == bfd_link_hash_undefweak) |
4592 | relocation = 0; | |
4593 | else | |
4594 | { | |
b34976b6 | 4595 | hundef = TRUE; |
252b5132 RH |
4596 | relocation = 0; |
4597 | } | |
4598 | } | |
116c20d2 NC |
4599 | else if (r_type == (unsigned int) RELOC_BASE10 |
4600 | || r_type == (unsigned int) RELOC_BASE13 | |
4601 | || r_type == (unsigned int) RELOC_BASE22) | |
4602 | { | |
4603 | struct external_nlist *sym; | |
4604 | int type; | |
4605 | ||
4606 | /* For base relative relocs, r_index is always an index | |
4607 | into the symbol table, even if r_extern is 0. */ | |
4608 | sym = syms + r_index; | |
4609 | type = H_GET_8 (input_bfd, sym->e_type); | |
4610 | if ((type & N_TYPE) == N_TEXT | |
4611 | || type == N_WEAKT) | |
4612 | r_section = obj_textsec (input_bfd); | |
4613 | else if ((type & N_TYPE) == N_DATA | |
4614 | || type == N_WEAKD) | |
4615 | r_section = obj_datasec (input_bfd); | |
4616 | else if ((type & N_TYPE) == N_BSS | |
4617 | || type == N_WEAKB) | |
4618 | r_section = obj_bsssec (input_bfd); | |
4619 | else if ((type & N_TYPE) == N_ABS | |
4620 | || type == N_WEAKA) | |
4621 | r_section = bfd_abs_section_ptr; | |
4622 | else | |
4623 | abort (); | |
4624 | relocation = (r_section->output_section->vma | |
4625 | + r_section->output_offset | |
4626 | + (GET_WORD (input_bfd, sym->e_value) | |
4627 | - r_section->vma)); | |
4628 | } | |
252b5132 RH |
4629 | else |
4630 | { | |
116c20d2 | 4631 | r_section = aout_reloc_index_to_section (input_bfd, r_index); |
252b5132 | 4632 | |
116c20d2 NC |
4633 | /* If this is a PC relative reloc, then R_ADDEND is the |
4634 | difference between the two vmas, or | |
4635 | old_dest_sec + old_dest_off - (old_src_sec + old_src_off) | |
4636 | where | |
4637 | old_dest_sec == section->vma | |
4638 | and | |
4639 | old_src_sec == input_section->vma | |
4640 | and | |
4641 | old_src_off == r_addr | |
4642 | ||
4643 | _bfd_final_link_relocate expects RELOCATION + | |
4644 | R_ADDEND to be the VMA of the destination minus | |
4645 | r_addr (the minus r_addr is because this relocation | |
4646 | is not pcrel_offset, which is a bit confusing and | |
4647 | should, perhaps, be changed), or | |
4648 | new_dest_sec | |
4649 | where | |
4650 | new_dest_sec == output_section->vma + output_offset | |
4651 | We arrange for this to happen by setting RELOCATION to | |
4652 | new_dest_sec + old_src_sec - old_dest_sec | |
4653 | ||
4654 | If this is not a PC relative reloc, then R_ADDEND is | |
4655 | simply the VMA of the destination, so we set | |
4656 | RELOCATION to the change in the destination VMA, or | |
4657 | new_dest_sec - old_dest_sec | |
4658 | */ | |
4659 | relocation = (r_section->output_section->vma | |
4660 | + r_section->output_offset | |
4661 | - r_section->vma); | |
4662 | if (howto_table_ext[r_type].pc_relative) | |
252b5132 RH |
4663 | relocation += input_section->vma; |
4664 | } | |
4665 | ||
4666 | if (check_dynamic_reloc != NULL) | |
4667 | { | |
b34976b6 | 4668 | bfd_boolean skip; |
252b5132 RH |
4669 | |
4670 | if (! ((*check_dynamic_reloc) | |
57402f1e | 4671 | (flaginfo->info, input_bfd, input_section, h, |
116c20d2 | 4672 | (void *) rel, contents, &skip, &relocation))) |
b34976b6 | 4673 | return FALSE; |
252b5132 RH |
4674 | if (skip) |
4675 | continue; | |
4676 | } | |
4677 | ||
4678 | /* Now warn if a global symbol is undefined. We could not | |
4679 | do this earlier, because check_dynamic_reloc might want | |
4680 | to skip this reloc. */ | |
116c20d2 | 4681 | if (hundef |
0e1862bb | 4682 | && ! bfd_link_pic (flaginfo->info) |
116c20d2 NC |
4683 | && r_type != (unsigned int) RELOC_BASE10 |
4684 | && r_type != (unsigned int) RELOC_BASE13 | |
4685 | && r_type != (unsigned int) RELOC_BASE22) | |
252b5132 RH |
4686 | { |
4687 | const char *name; | |
4688 | ||
4689 | if (h != NULL) | |
4690 | name = h->root.root.string; | |
4691 | else | |
4692 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
1a72702b AM |
4693 | (*flaginfo->info->callbacks->undefined_symbol) |
4694 | (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE); | |
252b5132 RH |
4695 | } |
4696 | ||
116c20d2 NC |
4697 | if (r_type != (unsigned int) RELOC_SPARC_REV32) |
4698 | r = MY_final_link_relocate (howto_table_ext + r_type, | |
4699 | input_bfd, input_section, | |
4700 | contents, r_addr, relocation, | |
4701 | r_addend); | |
4702 | else | |
252b5132 | 4703 | { |
116c20d2 | 4704 | bfd_vma x; |
252b5132 | 4705 | |
116c20d2 NC |
4706 | x = bfd_get_32 (input_bfd, contents + r_addr); |
4707 | x = x + relocation + r_addend; | |
4708 | bfd_putl32 (/*input_bfd,*/ x, contents + r_addr); | |
4709 | r = bfd_reloc_ok; | |
4710 | } | |
4711 | ||
4712 | if (r != bfd_reloc_ok) | |
4713 | { | |
4714 | switch (r) | |
4715 | { | |
4716 | default: | |
4717 | case bfd_reloc_outofrange: | |
4718 | abort (); | |
4719 | case bfd_reloc_overflow: | |
252b5132 | 4720 | { |
116c20d2 | 4721 | const char *name; |
252b5132 | 4722 | |
116c20d2 NC |
4723 | if (h != NULL) |
4724 | name = NULL; | |
4725 | else if (r_extern | |
4726 | || r_type == (unsigned int) RELOC_BASE10 | |
4727 | || r_type == (unsigned int) RELOC_BASE13 | |
4728 | || r_type == (unsigned int) RELOC_BASE22) | |
4729 | name = strings + GET_WORD (input_bfd, | |
4730 | syms[r_index].e_strx); | |
4731 | else | |
4732 | { | |
4733 | asection *s; | |
4734 | ||
4735 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
4736 | name = bfd_section_name (input_bfd, s); | |
4737 | } | |
1a72702b AM |
4738 | (*flaginfo->info->callbacks->reloc_overflow) |
4739 | (flaginfo->info, (h ? &h->root : NULL), name, | |
4740 | howto_table_ext[r_type].name, | |
4741 | r_addend, input_bfd, input_section, r_addr); | |
252b5132 | 4742 | } |
116c20d2 NC |
4743 | break; |
4744 | } | |
252b5132 RH |
4745 | } |
4746 | } | |
4747 | } | |
4748 | ||
b34976b6 | 4749 | return TRUE; |
252b5132 RH |
4750 | } |
4751 | ||
116c20d2 NC |
4752 | /* Link an a.out section into the output file. */ |
4753 | ||
4754 | static bfd_boolean | |
57402f1e | 4755 | aout_link_input_section (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
4756 | bfd *input_bfd, |
4757 | asection *input_section, | |
4758 | file_ptr *reloff_ptr, | |
4759 | bfd_size_type rel_size) | |
4760 | { | |
4761 | bfd_size_type input_size; | |
4762 | void * relocs; | |
4763 | ||
4764 | /* Get the section contents. */ | |
4765 | input_size = input_section->size; | |
4766 | if (! bfd_get_section_contents (input_bfd, input_section, | |
57402f1e | 4767 | (void *) flaginfo->contents, |
116c20d2 NC |
4768 | (file_ptr) 0, input_size)) |
4769 | return FALSE; | |
4770 | ||
4771 | /* Read in the relocs if we haven't already done it. */ | |
4772 | if (aout_section_data (input_section) != NULL | |
4773 | && aout_section_data (input_section)->relocs != NULL) | |
4774 | relocs = aout_section_data (input_section)->relocs; | |
4775 | else | |
4776 | { | |
57402f1e | 4777 | relocs = flaginfo->relocs; |
116c20d2 NC |
4778 | if (rel_size > 0) |
4779 | { | |
4780 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
4781 | || bfd_bread (relocs, rel_size, input_bfd) != rel_size) | |
4782 | return FALSE; | |
4783 | } | |
4784 | } | |
4785 | ||
4786 | /* Relocate the section contents. */ | |
4787 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) | |
4788 | { | |
57402f1e | 4789 | if (! aout_link_input_section_std (flaginfo, input_bfd, input_section, |
116c20d2 | 4790 | (struct reloc_std_external *) relocs, |
57402f1e | 4791 | rel_size, flaginfo->contents)) |
116c20d2 NC |
4792 | return FALSE; |
4793 | } | |
4794 | else | |
4795 | { | |
57402f1e | 4796 | if (! aout_link_input_section_ext (flaginfo, input_bfd, input_section, |
116c20d2 | 4797 | (struct reloc_ext_external *) relocs, |
57402f1e | 4798 | rel_size, flaginfo->contents)) |
116c20d2 NC |
4799 | return FALSE; |
4800 | } | |
4801 | ||
4802 | /* Write out the section contents. */ | |
57402f1e | 4803 | if (! bfd_set_section_contents (flaginfo->output_bfd, |
116c20d2 | 4804 | input_section->output_section, |
57402f1e | 4805 | (void *) flaginfo->contents, |
116c20d2 NC |
4806 | (file_ptr) input_section->output_offset, |
4807 | input_size)) | |
4808 | return FALSE; | |
4809 | ||
4810 | /* If we are producing relocatable output, the relocs were | |
4811 | modified, and we now write them out. */ | |
0e1862bb | 4812 | if (bfd_link_relocatable (flaginfo->info) && rel_size > 0) |
116c20d2 | 4813 | { |
57402f1e | 4814 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) |
116c20d2 | 4815 | return FALSE; |
57402f1e | 4816 | if (bfd_bwrite (relocs, rel_size, flaginfo->output_bfd) != rel_size) |
116c20d2 NC |
4817 | return FALSE; |
4818 | *reloff_ptr += rel_size; | |
4819 | ||
4820 | /* Assert that the relocs have not run into the symbols, and | |
4821 | that if these are the text relocs they have not run into the | |
4822 | data relocs. */ | |
57402f1e NC |
4823 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
4824 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 4825 | || (*reloff_ptr |
57402f1e | 4826 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
116c20d2 NC |
4827 | } |
4828 | ||
4829 | return TRUE; | |
4830 | } | |
4831 | ||
4832 | /* Adjust and write out the symbols for an a.out file. Set the new | |
4833 | symbol indices into a symbol_map. */ | |
252b5132 | 4834 | |
b34976b6 | 4835 | static bfd_boolean |
57402f1e | 4836 | aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
252b5132 | 4837 | { |
252b5132 | 4838 | bfd *output_bfd; |
116c20d2 | 4839 | bfd_size_type sym_count; |
252b5132 | 4840 | char *strings; |
116c20d2 NC |
4841 | enum bfd_link_strip strip; |
4842 | enum bfd_link_discard discard; | |
4843 | struct external_nlist *outsym; | |
4844 | bfd_size_type strtab_index; | |
4845 | struct external_nlist *sym; | |
4846 | struct external_nlist *sym_end; | |
4847 | struct aout_link_hash_entry **sym_hash; | |
252b5132 | 4848 | int *symbol_map; |
116c20d2 NC |
4849 | bfd_boolean pass; |
4850 | bfd_boolean skip_next; | |
252b5132 | 4851 | |
57402f1e | 4852 | output_bfd = flaginfo->output_bfd; |
116c20d2 NC |
4853 | sym_count = obj_aout_external_sym_count (input_bfd); |
4854 | strings = obj_aout_external_strings (input_bfd); | |
57402f1e NC |
4855 | strip = flaginfo->info->strip; |
4856 | discard = flaginfo->info->discard; | |
4857 | outsym = flaginfo->output_syms; | |
252b5132 | 4858 | |
116c20d2 NC |
4859 | /* First write out a symbol for this object file, unless we are |
4860 | discarding such symbols. */ | |
4861 | if (strip != strip_all | |
4862 | && (strip != strip_some | |
57402f1e | 4863 | || bfd_hash_lookup (flaginfo->info->keep_hash, input_bfd->filename, |
116c20d2 NC |
4864 | FALSE, FALSE) != NULL) |
4865 | && discard != discard_all) | |
4866 | { | |
4867 | H_PUT_8 (output_bfd, N_TEXT, outsym->e_type); | |
4868 | H_PUT_8 (output_bfd, 0, outsym->e_other); | |
4869 | H_PUT_16 (output_bfd, 0, outsym->e_desc); | |
57402f1e | 4870 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
116c20d2 NC |
4871 | input_bfd->filename, FALSE); |
4872 | if (strtab_index == (bfd_size_type) -1) | |
4873 | return FALSE; | |
4874 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
4875 | PUT_WORD (output_bfd, | |
4876 | (bfd_get_section_vma (output_bfd, | |
4877 | obj_textsec (input_bfd)->output_section) | |
4878 | + obj_textsec (input_bfd)->output_offset), | |
4879 | outsym->e_value); | |
4880 | ++obj_aout_external_sym_count (output_bfd); | |
4881 | ++outsym; | |
4882 | } | |
252b5132 | 4883 | |
116c20d2 NC |
4884 | pass = FALSE; |
4885 | skip_next = FALSE; | |
4886 | sym = obj_aout_external_syms (input_bfd); | |
4887 | sym_end = sym + sym_count; | |
4888 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4889 | symbol_map = flaginfo->symbol_map; |
116c20d2 NC |
4890 | memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map); |
4891 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) | |
252b5132 | 4892 | { |
116c20d2 NC |
4893 | const char *name; |
4894 | int type; | |
4895 | struct aout_link_hash_entry *h; | |
4896 | bfd_boolean skip; | |
4897 | asection *symsec; | |
4898 | bfd_vma val = 0; | |
4899 | bfd_boolean copy; | |
252b5132 | 4900 | |
116c20d2 NC |
4901 | /* We set *symbol_map to 0 above for all symbols. If it has |
4902 | already been set to -1 for this symbol, it means that we are | |
4903 | discarding it because it appears in a duplicate header file. | |
4904 | See the N_BINCL code below. */ | |
4905 | if (*symbol_map == -1) | |
4906 | continue; | |
252b5132 | 4907 | |
116c20d2 NC |
4908 | /* Initialize *symbol_map to -1, which means that the symbol was |
4909 | not copied into the output file. We will change it later if | |
4910 | we do copy the symbol over. */ | |
4911 | *symbol_map = -1; | |
4912 | ||
4913 | type = H_GET_8 (input_bfd, sym->e_type); | |
4914 | name = strings + GET_WORD (input_bfd, sym->e_strx); | |
4915 | ||
4916 | h = NULL; | |
4917 | ||
4918 | if (pass) | |
252b5132 | 4919 | { |
116c20d2 NC |
4920 | /* Pass this symbol through. It is the target of an |
4921 | indirect or warning symbol. */ | |
4922 | val = GET_WORD (input_bfd, sym->e_value); | |
4923 | pass = FALSE; | |
252b5132 | 4924 | } |
116c20d2 | 4925 | else if (skip_next) |
252b5132 | 4926 | { |
116c20d2 NC |
4927 | /* Skip this symbol, which is the target of an indirect |
4928 | symbol that we have changed to no longer be an indirect | |
4929 | symbol. */ | |
4930 | skip_next = FALSE; | |
4931 | continue; | |
252b5132 | 4932 | } |
116c20d2 NC |
4933 | else |
4934 | { | |
4935 | struct aout_link_hash_entry *hresolve; | |
252b5132 | 4936 | |
116c20d2 NC |
4937 | /* We have saved the hash table entry for this symbol, if |
4938 | there is one. Note that we could just look it up again | |
4939 | in the hash table, provided we first check that it is an | |
4940 | external symbol. */ | |
4941 | h = *sym_hash; | |
252b5132 | 4942 | |
116c20d2 NC |
4943 | /* Use the name from the hash table, in case the symbol was |
4944 | wrapped. */ | |
4945 | if (h != NULL | |
4946 | && h->root.type != bfd_link_hash_warning) | |
4947 | name = h->root.root.string; | |
252b5132 | 4948 | |
116c20d2 NC |
4949 | /* If this is an indirect or warning symbol, then change |
4950 | hresolve to the base symbol. We also change *sym_hash so | |
4951 | that the relocation routines relocate against the real | |
4952 | symbol. */ | |
4953 | hresolve = h; | |
4954 | if (h != (struct aout_link_hash_entry *) NULL | |
4955 | && (h->root.type == bfd_link_hash_indirect | |
4956 | || h->root.type == bfd_link_hash_warning)) | |
252b5132 | 4957 | { |
116c20d2 NC |
4958 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; |
4959 | while (hresolve->root.type == bfd_link_hash_indirect | |
4960 | || hresolve->root.type == bfd_link_hash_warning) | |
4961 | hresolve = ((struct aout_link_hash_entry *) | |
4962 | hresolve->root.u.i.link); | |
4963 | *sym_hash = hresolve; | |
4964 | } | |
4965 | ||
4966 | /* If the symbol has already been written out, skip it. */ | |
4967 | if (h != NULL | |
4968 | && h->written) | |
4969 | { | |
4970 | if ((type & N_TYPE) == N_INDR | |
4971 | || type == N_WARNING) | |
4972 | skip_next = TRUE; | |
4973 | *symbol_map = h->indx; | |
4974 | continue; | |
4975 | } | |
4976 | ||
4977 | /* See if we are stripping this symbol. */ | |
4978 | skip = FALSE; | |
4979 | switch (strip) | |
4980 | { | |
4981 | case strip_none: | |
4982 | break; | |
4983 | case strip_debugger: | |
4984 | if ((type & N_STAB) != 0) | |
4985 | skip = TRUE; | |
4986 | break; | |
4987 | case strip_some: | |
57402f1e | 4988 | if (bfd_hash_lookup (flaginfo->info->keep_hash, name, FALSE, FALSE) |
116c20d2 NC |
4989 | == NULL) |
4990 | skip = TRUE; | |
4991 | break; | |
4992 | case strip_all: | |
4993 | skip = TRUE; | |
4994 | break; | |
4995 | } | |
4996 | if (skip) | |
4997 | { | |
4998 | if (h != NULL) | |
4999 | h->written = TRUE; | |
5000 | continue; | |
5001 | } | |
5002 | ||
5003 | /* Get the value of the symbol. */ | |
5004 | if ((type & N_TYPE) == N_TEXT | |
5005 | || type == N_WEAKT) | |
5006 | symsec = obj_textsec (input_bfd); | |
5007 | else if ((type & N_TYPE) == N_DATA | |
5008 | || type == N_WEAKD) | |
5009 | symsec = obj_datasec (input_bfd); | |
5010 | else if ((type & N_TYPE) == N_BSS | |
5011 | || type == N_WEAKB) | |
5012 | symsec = obj_bsssec (input_bfd); | |
5013 | else if ((type & N_TYPE) == N_ABS | |
5014 | || type == N_WEAKA) | |
5015 | symsec = bfd_abs_section_ptr; | |
5016 | else if (((type & N_TYPE) == N_INDR | |
5017 | && (hresolve == NULL | |
5018 | || (hresolve->root.type != bfd_link_hash_defined | |
5019 | && hresolve->root.type != bfd_link_hash_defweak | |
5020 | && hresolve->root.type != bfd_link_hash_common))) | |
5021 | || type == N_WARNING) | |
5022 | { | |
5023 | /* Pass the next symbol through unchanged. The | |
5024 | condition above for indirect symbols is so that if | |
5025 | the indirect symbol was defined, we output it with | |
5026 | the correct definition so the debugger will | |
5027 | understand it. */ | |
5028 | pass = TRUE; | |
5029 | val = GET_WORD (input_bfd, sym->e_value); | |
5030 | symsec = NULL; | |
5031 | } | |
5032 | else if ((type & N_STAB) != 0) | |
5033 | { | |
5034 | val = GET_WORD (input_bfd, sym->e_value); | |
5035 | symsec = NULL; | |
5036 | } | |
5037 | else | |
5038 | { | |
5039 | /* If we get here with an indirect symbol, it means that | |
5040 | we are outputting it with a real definition. In such | |
5041 | a case we do not want to output the next symbol, | |
5042 | which is the target of the indirection. */ | |
5043 | if ((type & N_TYPE) == N_INDR) | |
5044 | skip_next = TRUE; | |
5045 | ||
5046 | symsec = NULL; | |
5047 | ||
5048 | /* We need to get the value from the hash table. We use | |
5049 | hresolve so that if we have defined an indirect | |
5050 | symbol we output the final definition. */ | |
5051 | if (h == NULL) | |
5052 | { | |
5053 | switch (type & N_TYPE) | |
5054 | { | |
5055 | case N_SETT: | |
5056 | symsec = obj_textsec (input_bfd); | |
5057 | break; | |
5058 | case N_SETD: | |
5059 | symsec = obj_datasec (input_bfd); | |
5060 | break; | |
5061 | case N_SETB: | |
5062 | symsec = obj_bsssec (input_bfd); | |
5063 | break; | |
5064 | case N_SETA: | |
5065 | symsec = bfd_abs_section_ptr; | |
5066 | break; | |
5067 | default: | |
5068 | val = 0; | |
5069 | break; | |
5070 | } | |
5071 | } | |
5072 | else if (hresolve->root.type == bfd_link_hash_defined | |
5073 | || hresolve->root.type == bfd_link_hash_defweak) | |
252b5132 | 5074 | { |
116c20d2 | 5075 | asection *input_section; |
252b5132 RH |
5076 | asection *output_section; |
5077 | ||
116c20d2 NC |
5078 | /* This case usually means a common symbol which was |
5079 | turned into a defined symbol. */ | |
5080 | input_section = hresolve->root.u.def.section; | |
5081 | output_section = input_section->output_section; | |
5082 | BFD_ASSERT (bfd_is_abs_section (output_section) | |
5083 | || output_section->owner == output_bfd); | |
5084 | val = (hresolve->root.u.def.value | |
5085 | + bfd_get_section_vma (output_bfd, output_section) | |
5086 | + input_section->output_offset); | |
5087 | ||
5088 | /* Get the correct type based on the section. If | |
5089 | this is a constructed set, force it to be | |
5090 | globally visible. */ | |
5091 | if (type == N_SETT | |
5092 | || type == N_SETD | |
5093 | || type == N_SETB | |
5094 | || type == N_SETA) | |
5095 | type |= N_EXT; | |
5096 | ||
5097 | type &=~ N_TYPE; | |
252b5132 | 5098 | |
252b5132 | 5099 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 NC |
5100 | type |= (hresolve->root.type == bfd_link_hash_defined |
5101 | ? N_TEXT | |
5102 | : N_WEAKT); | |
252b5132 | 5103 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 NC |
5104 | type |= (hresolve->root.type == bfd_link_hash_defined |
5105 | ? N_DATA | |
5106 | : N_WEAKD); | |
252b5132 | 5107 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 NC |
5108 | type |= (hresolve->root.type == bfd_link_hash_defined |
5109 | ? N_BSS | |
5110 | : N_WEAKB); | |
252b5132 | 5111 | else |
116c20d2 NC |
5112 | type |= (hresolve->root.type == bfd_link_hash_defined |
5113 | ? N_ABS | |
5114 | : N_WEAKA); | |
5115 | } | |
5116 | else if (hresolve->root.type == bfd_link_hash_common) | |
5117 | val = hresolve->root.u.c.size; | |
5118 | else if (hresolve->root.type == bfd_link_hash_undefweak) | |
5119 | { | |
5120 | val = 0; | |
5121 | type = N_WEAKU; | |
252b5132 RH |
5122 | } |
5123 | else | |
116c20d2 NC |
5124 | val = 0; |
5125 | } | |
5126 | if (symsec != NULL) | |
5127 | val = (symsec->output_section->vma | |
5128 | + symsec->output_offset | |
5129 | + (GET_WORD (input_bfd, sym->e_value) | |
5130 | - symsec->vma)); | |
5131 | ||
5132 | /* If this is a global symbol set the written flag, and if | |
5133 | it is a local symbol see if we should discard it. */ | |
5134 | if (h != NULL) | |
5135 | { | |
5136 | h->written = TRUE; | |
5137 | h->indx = obj_aout_external_sym_count (output_bfd); | |
5138 | } | |
5139 | else if ((type & N_TYPE) != N_SETT | |
5140 | && (type & N_TYPE) != N_SETD | |
5141 | && (type & N_TYPE) != N_SETB | |
5142 | && (type & N_TYPE) != N_SETA) | |
5143 | { | |
5144 | switch (discard) | |
252b5132 | 5145 | { |
116c20d2 NC |
5146 | case discard_none: |
5147 | case discard_sec_merge: | |
5148 | break; | |
5149 | case discard_l: | |
5150 | if ((type & N_STAB) == 0 | |
5151 | && bfd_is_local_label_name (input_bfd, name)) | |
5152 | skip = TRUE; | |
5153 | break; | |
5154 | case discard_all: | |
5155 | skip = TRUE; | |
5156 | break; | |
5157 | } | |
5158 | if (skip) | |
5159 | { | |
5160 | pass = FALSE; | |
5161 | continue; | |
5162 | } | |
5163 | } | |
252b5132 | 5164 | |
116c20d2 NC |
5165 | /* An N_BINCL symbol indicates the start of the stabs |
5166 | entries for a header file. We need to scan ahead to the | |
5167 | next N_EINCL symbol, ignoring nesting, adding up all the | |
5168 | characters in the symbol names, not including the file | |
5169 | numbers in types (the first number after an open | |
5170 | parenthesis). */ | |
5171 | if (type == (int) N_BINCL) | |
5172 | { | |
5173 | struct external_nlist *incl_sym; | |
5174 | int nest; | |
5175 | struct aout_link_includes_entry *incl_entry; | |
5176 | struct aout_link_includes_totals *t; | |
5177 | ||
5178 | val = 0; | |
5179 | nest = 0; | |
5180 | for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) | |
5181 | { | |
5182 | int incl_type; | |
5183 | ||
5184 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); | |
5185 | if (incl_type == (int) N_EINCL) | |
252b5132 | 5186 | { |
116c20d2 NC |
5187 | if (nest == 0) |
5188 | break; | |
5189 | --nest; | |
5190 | } | |
5191 | else if (incl_type == (int) N_BINCL) | |
5192 | ++nest; | |
5193 | else if (nest == 0) | |
5194 | { | |
5195 | const char *s; | |
5196 | ||
5197 | s = strings + GET_WORD (input_bfd, incl_sym->e_strx); | |
5198 | for (; *s != '\0'; s++) | |
252b5132 | 5199 | { |
116c20d2 NC |
5200 | val += *s; |
5201 | if (*s == '(') | |
252b5132 | 5202 | { |
116c20d2 NC |
5203 | /* Skip the file number. */ |
5204 | ++s; | |
5205 | while (ISDIGIT (*s)) | |
5206 | ++s; | |
5207 | --s; | |
252b5132 | 5208 | } |
252b5132 | 5209 | } |
116c20d2 NC |
5210 | } |
5211 | } | |
252b5132 | 5212 | |
116c20d2 NC |
5213 | /* If we have already included a header file with the |
5214 | same value, then replace this one with an N_EXCL | |
5215 | symbol. */ | |
57402f1e NC |
5216 | copy = (bfd_boolean) (! flaginfo->info->keep_memory); |
5217 | incl_entry = aout_link_includes_lookup (&flaginfo->includes, | |
116c20d2 NC |
5218 | name, TRUE, copy); |
5219 | if (incl_entry == NULL) | |
5220 | return FALSE; | |
5221 | for (t = incl_entry->totals; t != NULL; t = t->next) | |
5222 | if (t->total == val) | |
5223 | break; | |
5224 | if (t == NULL) | |
5225 | { | |
5226 | /* This is the first time we have seen this header | |
5227 | file with this set of stabs strings. */ | |
a50b1753 | 5228 | t = (struct aout_link_includes_totals *) |
57402f1e | 5229 | bfd_hash_allocate (&flaginfo->includes.root, |
116c20d2 NC |
5230 | sizeof *t); |
5231 | if (t == NULL) | |
5232 | return FALSE; | |
5233 | t->total = val; | |
5234 | t->next = incl_entry->totals; | |
5235 | incl_entry->totals = t; | |
5236 | } | |
5237 | else | |
5238 | { | |
5239 | int *incl_map; | |
5240 | ||
5241 | /* This is a duplicate header file. We must change | |
5242 | it to be an N_EXCL entry, and mark all the | |
5243 | included symbols to prevent outputting them. */ | |
5244 | type = (int) N_EXCL; | |
5245 | ||
5246 | nest = 0; | |
5247 | for (incl_sym = sym + 1, incl_map = symbol_map + 1; | |
5248 | incl_sym < sym_end; | |
5249 | incl_sym++, incl_map++) | |
5250 | { | |
5251 | int incl_type; | |
5252 | ||
5253 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); | |
5254 | if (incl_type == (int) N_EINCL) | |
5255 | { | |
5256 | if (nest == 0) | |
5257 | { | |
5258 | *incl_map = -1; | |
5259 | break; | |
5260 | } | |
5261 | --nest; | |
252b5132 | 5262 | } |
116c20d2 NC |
5263 | else if (incl_type == (int) N_BINCL) |
5264 | ++nest; | |
5265 | else if (nest == 0) | |
5266 | *incl_map = -1; | |
252b5132 | 5267 | } |
252b5132 RH |
5268 | } |
5269 | } | |
116c20d2 NC |
5270 | } |
5271 | ||
5272 | /* Copy this symbol into the list of symbols we are going to | |
5273 | write out. */ | |
5274 | H_PUT_8 (output_bfd, type, outsym->e_type); | |
5275 | H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other); | |
5276 | H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc); | |
5277 | copy = FALSE; | |
57402f1e | 5278 | if (! flaginfo->info->keep_memory) |
116c20d2 NC |
5279 | { |
5280 | /* name points into a string table which we are going to | |
5281 | free. If there is a hash table entry, use that string. | |
5282 | Otherwise, copy name into memory. */ | |
5283 | if (h != NULL) | |
5284 | name = h->root.root.string; | |
252b5132 | 5285 | else |
116c20d2 NC |
5286 | copy = TRUE; |
5287 | } | |
57402f1e | 5288 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
116c20d2 NC |
5289 | name, copy); |
5290 | if (strtab_index == (bfd_size_type) -1) | |
5291 | return FALSE; | |
5292 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
5293 | PUT_WORD (output_bfd, val, outsym->e_value); | |
5294 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
5295 | ++obj_aout_external_sym_count (output_bfd); | |
5296 | ++outsym; | |
5297 | } | |
252b5132 | 5298 | |
116c20d2 | 5299 | /* Write out the output symbols we have just constructed. */ |
57402f1e | 5300 | if (outsym > flaginfo->output_syms) |
116c20d2 NC |
5301 | { |
5302 | bfd_size_type outsym_size; | |
252b5132 | 5303 | |
57402f1e | 5304 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0) |
116c20d2 | 5305 | return FALSE; |
57402f1e | 5306 | outsym_size = outsym - flaginfo->output_syms; |
116c20d2 | 5307 | outsym_size *= EXTERNAL_NLIST_SIZE; |
57402f1e | 5308 | if (bfd_bwrite ((void *) flaginfo->output_syms, outsym_size, output_bfd) |
116c20d2 NC |
5309 | != outsym_size) |
5310 | return FALSE; | |
57402f1e | 5311 | flaginfo->symoff += outsym_size; |
116c20d2 | 5312 | } |
252b5132 | 5313 | |
116c20d2 NC |
5314 | return TRUE; |
5315 | } | |
252b5132 | 5316 | |
116c20d2 | 5317 | /* Link an a.out input BFD into the output file. */ |
252b5132 | 5318 | |
116c20d2 | 5319 | static bfd_boolean |
57402f1e | 5320 | aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
116c20d2 | 5321 | { |
116c20d2 | 5322 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); |
252b5132 | 5323 | |
116c20d2 NC |
5324 | /* If this is a dynamic object, it may need special handling. */ |
5325 | if ((input_bfd->flags & DYNAMIC) != 0 | |
5326 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
5327 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
57402f1e | 5328 | (flaginfo->info, input_bfd)); |
252b5132 | 5329 | |
116c20d2 | 5330 | /* Get the symbols. We probably have them already, unless |
57402f1e | 5331 | flaginfo->info->keep_memory is FALSE. */ |
116c20d2 NC |
5332 | if (! aout_get_external_symbols (input_bfd)) |
5333 | return FALSE; | |
252b5132 | 5334 | |
116c20d2 | 5335 | /* Write out the symbols and get a map of the new indices. The map |
57402f1e NC |
5336 | is placed into flaginfo->symbol_map. */ |
5337 | if (! aout_link_write_symbols (flaginfo, input_bfd)) | |
116c20d2 | 5338 | return FALSE; |
252b5132 | 5339 | |
116c20d2 NC |
5340 | /* Relocate and write out the sections. These functions use the |
5341 | symbol map created by aout_link_write_symbols. The linker_mark | |
5342 | field will be set if these sections are to be included in the | |
5343 | link, which will normally be the case. */ | |
5344 | if (obj_textsec (input_bfd)->linker_mark) | |
5345 | { | |
57402f1e | 5346 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 5347 | obj_textsec (input_bfd), |
57402f1e | 5348 | &flaginfo->treloff, |
116c20d2 NC |
5349 | exec_hdr (input_bfd)->a_trsize)) |
5350 | return FALSE; | |
5351 | } | |
5352 | if (obj_datasec (input_bfd)->linker_mark) | |
5353 | { | |
57402f1e | 5354 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 5355 | obj_datasec (input_bfd), |
57402f1e | 5356 | &flaginfo->dreloff, |
116c20d2 NC |
5357 | exec_hdr (input_bfd)->a_drsize)) |
5358 | return FALSE; | |
5359 | } | |
5360 | ||
5361 | /* If we are not keeping memory, we don't need the symbols any | |
5362 | longer. We still need them if we are keeping memory, because the | |
5363 | strings in the hash table point into them. */ | |
57402f1e | 5364 | if (! flaginfo->info->keep_memory) |
116c20d2 NC |
5365 | { |
5366 | if (! aout_link_free_symbols (input_bfd)) | |
5367 | return FALSE; | |
5368 | } | |
5369 | ||
5370 | return TRUE; | |
5371 | } | |
5372 | ||
5373 | /* Do the final link step. This is called on the output BFD. The | |
5374 | INFO structure should point to a list of BFDs linked through the | |
c72f2fb2 | 5375 | link.next field which can be used to find each BFD which takes part |
116c20d2 NC |
5376 | in the output. Also, each section in ABFD should point to a list |
5377 | of bfd_link_order structures which list all the input sections for | |
5378 | the output section. */ | |
5379 | ||
5380 | bfd_boolean | |
5381 | NAME (aout, final_link) (bfd *abfd, | |
5382 | struct bfd_link_info *info, | |
5383 | void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *)) | |
5384 | { | |
5385 | struct aout_final_link_info aout_info; | |
5386 | bfd_boolean includes_hash_initialized = FALSE; | |
5387 | bfd *sub; | |
5388 | bfd_size_type trsize, drsize; | |
5389 | bfd_size_type max_contents_size; | |
5390 | bfd_size_type max_relocs_size; | |
5391 | bfd_size_type max_sym_count; | |
116c20d2 NC |
5392 | struct bfd_link_order *p; |
5393 | asection *o; | |
5394 | bfd_boolean have_link_order_relocs; | |
5395 | ||
0e1862bb | 5396 | if (bfd_link_pic (info)) |
116c20d2 NC |
5397 | abfd->flags |= DYNAMIC; |
5398 | ||
5399 | aout_info.info = info; | |
5400 | aout_info.output_bfd = abfd; | |
5401 | aout_info.contents = NULL; | |
5402 | aout_info.relocs = NULL; | |
5403 | aout_info.symbol_map = NULL; | |
5404 | aout_info.output_syms = NULL; | |
252b5132 | 5405 | |
66eb6687 AM |
5406 | if (!bfd_hash_table_init_n (&aout_info.includes.root, |
5407 | aout_link_includes_newfunc, | |
5408 | sizeof (struct aout_link_includes_entry), | |
5409 | 251)) | |
116c20d2 NC |
5410 | goto error_return; |
5411 | includes_hash_initialized = TRUE; | |
252b5132 | 5412 | |
116c20d2 NC |
5413 | /* Figure out the largest section size. Also, if generating |
5414 | relocatable output, count the relocs. */ | |
5415 | trsize = 0; | |
5416 | drsize = 0; | |
5417 | max_contents_size = 0; | |
5418 | max_relocs_size = 0; | |
5419 | max_sym_count = 0; | |
c72f2fb2 | 5420 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 NC |
5421 | { |
5422 | bfd_size_type sz; | |
252b5132 | 5423 | |
0e1862bb | 5424 | if (bfd_link_relocatable (info)) |
116c20d2 NC |
5425 | { |
5426 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) | |
252b5132 | 5427 | { |
116c20d2 NC |
5428 | trsize += exec_hdr (sub)->a_trsize; |
5429 | drsize += exec_hdr (sub)->a_drsize; | |
252b5132 | 5430 | } |
252b5132 RH |
5431 | else |
5432 | { | |
116c20d2 NC |
5433 | /* FIXME: We need to identify the .text and .data sections |
5434 | and call get_reloc_upper_bound and canonicalize_reloc to | |
5435 | work out the number of relocs needed, and then multiply | |
5436 | by the reloc size. */ | |
4eca0228 | 5437 | _bfd_error_handler |
695344c0 | 5438 | /* xgettext:c-format */ |
dae82561 AM |
5439 | (_("%B: relocatable link from %s to %s not supported"), |
5440 | abfd, sub->xvec->name, abfd->xvec->name); | |
116c20d2 NC |
5441 | bfd_set_error (bfd_error_invalid_operation); |
5442 | goto error_return; | |
252b5132 | 5443 | } |
116c20d2 | 5444 | } |
252b5132 | 5445 | |
116c20d2 NC |
5446 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
5447 | { | |
5448 | sz = obj_textsec (sub)->size; | |
5449 | if (sz > max_contents_size) | |
5450 | max_contents_size = sz; | |
5451 | sz = obj_datasec (sub)->size; | |
5452 | if (sz > max_contents_size) | |
5453 | max_contents_size = sz; | |
252b5132 | 5454 | |
116c20d2 NC |
5455 | sz = exec_hdr (sub)->a_trsize; |
5456 | if (sz > max_relocs_size) | |
5457 | max_relocs_size = sz; | |
5458 | sz = exec_hdr (sub)->a_drsize; | |
5459 | if (sz > max_relocs_size) | |
5460 | max_relocs_size = sz; | |
252b5132 | 5461 | |
116c20d2 NC |
5462 | sz = obj_aout_external_sym_count (sub); |
5463 | if (sz > max_sym_count) | |
5464 | max_sym_count = sz; | |
252b5132 RH |
5465 | } |
5466 | } | |
5467 | ||
0e1862bb | 5468 | if (bfd_link_relocatable (info)) |
116c20d2 NC |
5469 | { |
5470 | if (obj_textsec (abfd) != NULL) | |
5471 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
8423293d | 5472 | ->map_head.link_order) |
116c20d2 NC |
5473 | * obj_reloc_entry_size (abfd)); |
5474 | if (obj_datasec (abfd) != NULL) | |
5475 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
8423293d | 5476 | ->map_head.link_order) |
116c20d2 NC |
5477 | * obj_reloc_entry_size (abfd)); |
5478 | } | |
252b5132 | 5479 | |
116c20d2 NC |
5480 | exec_hdr (abfd)->a_trsize = trsize; |
5481 | exec_hdr (abfd)->a_drsize = drsize; | |
252b5132 | 5482 | |
116c20d2 | 5483 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); |
252b5132 | 5484 | |
116c20d2 NC |
5485 | /* Adjust the section sizes and vmas according to the magic number. |
5486 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
5487 | filepos for each section. */ | |
3a8c4a5b | 5488 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
116c20d2 | 5489 | goto error_return; |
252b5132 | 5490 | |
116c20d2 NC |
5491 | /* The relocation and symbol file positions differ among a.out |
5492 | targets. We are passed a callback routine from the backend | |
5493 | specific code to handle this. | |
5494 | FIXME: At this point we do not know how much space the symbol | |
5495 | table will require. This will not work for any (nonstandard) | |
5496 | a.out target that needs to know the symbol table size before it | |
5497 | can compute the relocation file positions. This may or may not | |
5498 | be the case for the hp300hpux target, for example. */ | |
5499 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, | |
5500 | &aout_info.symoff); | |
5501 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
5502 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
5503 | obj_sym_filepos (abfd) = aout_info.symoff; | |
252b5132 | 5504 | |
116c20d2 NC |
5505 | /* We keep a count of the symbols as we output them. */ |
5506 | obj_aout_external_sym_count (abfd) = 0; | |
5507 | ||
5508 | /* We accumulate the string table as we write out the symbols. */ | |
5509 | aout_info.strtab = _bfd_stringtab_init (); | |
5510 | if (aout_info.strtab == NULL) | |
5511 | goto error_return; | |
5512 | ||
5513 | /* Allocate buffers to hold section contents and relocs. */ | |
a50b1753 | 5514 | aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size); |
116c20d2 | 5515 | aout_info.relocs = bfd_malloc (max_relocs_size); |
c38eb2a6 | 5516 | aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int)); |
a50b1753 NC |
5517 | aout_info.output_syms = (struct external_nlist *) |
5518 | bfd_malloc ((max_sym_count + 1) * sizeof (struct external_nlist)); | |
116c20d2 NC |
5519 | if ((aout_info.contents == NULL && max_contents_size != 0) |
5520 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
5521 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
5522 | || aout_info.output_syms == NULL) | |
5523 | goto error_return; | |
5524 | ||
5525 | /* If we have a symbol named __DYNAMIC, force it out now. This is | |
5526 | required by SunOS. Doing this here rather than in sunos.c is a | |
5527 | hack, but it's easier than exporting everything which would be | |
5528 | needed. */ | |
5529 | { | |
5530 | struct aout_link_hash_entry *h; | |
5531 | ||
5532 | h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", | |
5533 | FALSE, FALSE, FALSE); | |
5534 | if (h != NULL) | |
7686d77d | 5535 | aout_link_write_other_symbol (&h->root.root, &aout_info); |
116c20d2 NC |
5536 | } |
5537 | ||
5538 | /* The most time efficient way to do the link would be to read all | |
5539 | the input object files into memory and then sort out the | |
5540 | information into the output file. Unfortunately, that will | |
5541 | probably use too much memory. Another method would be to step | |
5542 | through everything that composes the text section and write it | |
5543 | out, and then everything that composes the data section and write | |
5544 | it out, and then write out the relocs, and then write out the | |
5545 | symbols. Unfortunately, that requires reading stuff from each | |
5546 | input file several times, and we will not be able to keep all the | |
5547 | input files open simultaneously, and reopening them will be slow. | |
5548 | ||
5549 | What we do is basically process one input file at a time. We do | |
5550 | everything we need to do with an input file once--copy over the | |
5551 | section contents, handle the relocation information, and write | |
5552 | out the symbols--and then we throw away the information we read | |
5553 | from it. This approach requires a lot of lseeks of the output | |
5554 | file, which is unfortunate but still faster than reopening a lot | |
5555 | of files. | |
5556 | ||
5557 | We use the output_has_begun field of the input BFDs to see | |
5558 | whether we have already handled it. */ | |
c72f2fb2 | 5559 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 | 5560 | sub->output_has_begun = FALSE; |
252b5132 | 5561 | |
116c20d2 NC |
5562 | /* Mark all sections which are to be included in the link. This |
5563 | will normally be every section. We need to do this so that we | |
5564 | can identify any sections which the linker has decided to not | |
5565 | include. */ | |
5566 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5567 | { |
8423293d | 5568 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
116c20d2 NC |
5569 | if (p->type == bfd_indirect_link_order) |
5570 | p->u.indirect.section->linker_mark = TRUE; | |
252b5132 RH |
5571 | } |
5572 | ||
116c20d2 NC |
5573 | have_link_order_relocs = FALSE; |
5574 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5575 | { |
8423293d | 5576 | for (p = o->map_head.link_order; |
116c20d2 NC |
5577 | p != NULL; |
5578 | p = p->next) | |
252b5132 | 5579 | { |
116c20d2 NC |
5580 | if (p->type == bfd_indirect_link_order |
5581 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
5582 | == bfd_target_aout_flavour)) | |
252b5132 | 5583 | { |
116c20d2 NC |
5584 | bfd *input_bfd; |
5585 | ||
5586 | input_bfd = p->u.indirect.section->owner; | |
5587 | if (! input_bfd->output_has_begun) | |
252b5132 | 5588 | { |
116c20d2 NC |
5589 | if (! aout_link_input_bfd (&aout_info, input_bfd)) |
5590 | goto error_return; | |
5591 | input_bfd->output_has_begun = TRUE; | |
252b5132 | 5592 | } |
252b5132 | 5593 | } |
116c20d2 NC |
5594 | else if (p->type == bfd_section_reloc_link_order |
5595 | || p->type == bfd_symbol_reloc_link_order) | |
5596 | { | |
5597 | /* These are handled below. */ | |
5598 | have_link_order_relocs = TRUE; | |
5599 | } | |
5600 | else | |
5601 | { | |
5602 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
5603 | goto error_return; | |
5604 | } | |
252b5132 RH |
5605 | } |
5606 | } | |
252b5132 | 5607 | |
116c20d2 | 5608 | /* Write out any symbols that we have not already written out. */ |
7686d77d AM |
5609 | bfd_hash_traverse (&info->hash->table, |
5610 | aout_link_write_other_symbol, | |
5611 | &aout_info); | |
116c20d2 NC |
5612 | |
5613 | /* Now handle any relocs we were asked to create by the linker. | |
5614 | These did not come from any input file. We must do these after | |
5615 | we have written out all the symbols, so that we know the symbol | |
5616 | indices to use. */ | |
5617 | if (have_link_order_relocs) | |
5618 | { | |
5619 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5620 | { |
8423293d | 5621 | for (p = o->map_head.link_order; |
116c20d2 NC |
5622 | p != NULL; |
5623 | p = p->next) | |
5624 | { | |
5625 | if (p->type == bfd_section_reloc_link_order | |
5626 | || p->type == bfd_symbol_reloc_link_order) | |
5627 | { | |
5628 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
5629 | goto error_return; | |
5630 | } | |
5631 | } | |
252b5132 | 5632 | } |
116c20d2 | 5633 | } |
252b5132 | 5634 | |
116c20d2 NC |
5635 | if (aout_info.contents != NULL) |
5636 | { | |
5637 | free (aout_info.contents); | |
5638 | aout_info.contents = NULL; | |
5639 | } | |
5640 | if (aout_info.relocs != NULL) | |
5641 | { | |
5642 | free (aout_info.relocs); | |
5643 | aout_info.relocs = NULL; | |
5644 | } | |
5645 | if (aout_info.symbol_map != NULL) | |
5646 | { | |
5647 | free (aout_info.symbol_map); | |
5648 | aout_info.symbol_map = NULL; | |
5649 | } | |
5650 | if (aout_info.output_syms != NULL) | |
5651 | { | |
5652 | free (aout_info.output_syms); | |
5653 | aout_info.output_syms = NULL; | |
5654 | } | |
5655 | if (includes_hash_initialized) | |
5656 | { | |
5657 | bfd_hash_table_free (&aout_info.includes.root); | |
5658 | includes_hash_initialized = FALSE; | |
5659 | } | |
252b5132 | 5660 | |
116c20d2 NC |
5661 | /* Finish up any dynamic linking we may be doing. */ |
5662 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
5663 | { | |
5664 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
5665 | goto error_return; | |
252b5132 RH |
5666 | } |
5667 | ||
116c20d2 NC |
5668 | /* Update the header information. */ |
5669 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
5670 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
5671 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
5672 | obj_textsec (abfd)->reloc_count = | |
5673 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
5674 | obj_datasec (abfd)->reloc_count = | |
5675 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
252b5132 | 5676 | |
116c20d2 | 5677 | /* Write out the string table, unless there are no symbols. */ |
f6e688f7 AM |
5678 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0) |
5679 | goto error_return; | |
116c20d2 NC |
5680 | if (abfd->symcount > 0) |
5681 | { | |
f6e688f7 | 5682 | if (!emit_stringtab (abfd, aout_info.strtab)) |
116c20d2 NC |
5683 | goto error_return; |
5684 | } | |
f6e688f7 | 5685 | else |
116c20d2 | 5686 | { |
f6e688f7 | 5687 | bfd_byte b[BYTES_IN_WORD]; |
252b5132 | 5688 | |
f6e688f7 AM |
5689 | memset (b, 0, BYTES_IN_WORD); |
5690 | if (bfd_bwrite (b, (bfd_size_type) BYTES_IN_WORD, abfd) != BYTES_IN_WORD) | |
116c20d2 NC |
5691 | goto error_return; |
5692 | } | |
252b5132 | 5693 | |
b34976b6 | 5694 | return TRUE; |
116c20d2 NC |
5695 | |
5696 | error_return: | |
5697 | if (aout_info.contents != NULL) | |
5698 | free (aout_info.contents); | |
5699 | if (aout_info.relocs != NULL) | |
5700 | free (aout_info.relocs); | |
5701 | if (aout_info.symbol_map != NULL) | |
5702 | free (aout_info.symbol_map); | |
5703 | if (aout_info.output_syms != NULL) | |
5704 | free (aout_info.output_syms); | |
5705 | if (includes_hash_initialized) | |
5706 | bfd_hash_table_free (&aout_info.includes.root); | |
5707 | return FALSE; | |
252b5132 | 5708 | } |