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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 RH |
1353 | stringsize = GET_WORD (abfd, string_chars); |
1354 | ||
1355 | #ifdef USE_MMAP | |
82e51918 | 1356 | if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize, |
b34976b6 AM |
1357 | &obj_aout_string_window (abfd), TRUE)) |
1358 | return FALSE; | |
252b5132 RH |
1359 | strings = (char *) obj_aout_string_window (abfd).data; |
1360 | #else | |
a50b1753 | 1361 | strings = (char *) bfd_malloc (stringsize + 1); |
252b5132 | 1362 | if (strings == NULL) |
b34976b6 | 1363 | return FALSE; |
252b5132 RH |
1364 | |
1365 | /* Skip space for the string count in the buffer for convenience | |
1366 | when using indexes. */ | |
dc810e39 AM |
1367 | amt = stringsize - BYTES_IN_WORD; |
1368 | if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt) | |
252b5132 RH |
1369 | { |
1370 | free (strings); | |
b34976b6 | 1371 | return FALSE; |
252b5132 RH |
1372 | } |
1373 | #endif | |
1374 | ||
1375 | /* Ensure that a zero index yields an empty string. */ | |
1376 | strings[0] = '\0'; | |
1377 | ||
1378 | strings[stringsize - 1] = 0; | |
1379 | ||
1380 | obj_aout_external_strings (abfd) = strings; | |
1381 | obj_aout_external_string_size (abfd) = stringsize; | |
1382 | } | |
1383 | ||
b34976b6 | 1384 | return TRUE; |
252b5132 RH |
1385 | } |
1386 | ||
1387 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type | |
1388 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1389 | nlist structure. This function is responsible for setting | |
1390 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
1391 | ||
b34976b6 | 1392 | static bfd_boolean |
116c20d2 | 1393 | translate_from_native_sym_flags (bfd *abfd, aout_symbol_type *cache_ptr) |
252b5132 RH |
1394 | { |
1395 | flagword visible; | |
1396 | ||
1397 | if ((cache_ptr->type & N_STAB) != 0 | |
1398 | || cache_ptr->type == N_FN) | |
1399 | { | |
1400 | asection *sec; | |
1401 | ||
1402 | /* This is a debugging symbol. */ | |
252b5132 RH |
1403 | cache_ptr->symbol.flags = BSF_DEBUGGING; |
1404 | ||
1405 | /* Work out the symbol section. */ | |
1406 | switch (cache_ptr->type & N_TYPE) | |
1407 | { | |
1408 | case N_TEXT: | |
1409 | case N_FN: | |
1410 | sec = obj_textsec (abfd); | |
1411 | break; | |
1412 | case N_DATA: | |
1413 | sec = obj_datasec (abfd); | |
1414 | break; | |
1415 | case N_BSS: | |
1416 | sec = obj_bsssec (abfd); | |
1417 | break; | |
1418 | default: | |
1419 | case N_ABS: | |
1420 | sec = bfd_abs_section_ptr; | |
1421 | break; | |
1422 | } | |
1423 | ||
1424 | cache_ptr->symbol.section = sec; | |
1425 | cache_ptr->symbol.value -= sec->vma; | |
1426 | ||
b34976b6 | 1427 | return TRUE; |
252b5132 RH |
1428 | } |
1429 | ||
1430 | /* Get the default visibility. This does not apply to all types, so | |
1431 | we just hold it in a local variable to use if wanted. */ | |
1432 | if ((cache_ptr->type & N_EXT) == 0) | |
1433 | visible = BSF_LOCAL; | |
1434 | else | |
1435 | visible = BSF_GLOBAL; | |
1436 | ||
1437 | switch (cache_ptr->type) | |
1438 | { | |
1439 | default: | |
1440 | case N_ABS: case N_ABS | N_EXT: | |
1441 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1442 | cache_ptr->symbol.flags = visible; | |
1443 | break; | |
1444 | ||
1445 | case N_UNDF | N_EXT: | |
1446 | if (cache_ptr->symbol.value != 0) | |
1447 | { | |
1448 | /* This is a common symbol. */ | |
1449 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
1450 | cache_ptr->symbol.section = bfd_com_section_ptr; | |
1451 | } | |
1452 | else | |
1453 | { | |
1454 | cache_ptr->symbol.flags = 0; | |
1455 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1456 | } | |
1457 | break; | |
1458 | ||
1459 | case N_TEXT: case N_TEXT | N_EXT: | |
1460 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1461 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1462 | cache_ptr->symbol.flags = visible; | |
1463 | break; | |
1464 | ||
1465 | /* N_SETV symbols used to represent set vectors placed in the | |
1466 | data section. They are no longer generated. Theoretically, | |
1467 | it was possible to extract the entries and combine them with | |
1468 | new ones, although I don't know if that was ever actually | |
1469 | done. Unless that feature is restored, treat them as data | |
1470 | symbols. */ | |
1471 | case N_SETV: case N_SETV | N_EXT: | |
1472 | case N_DATA: case N_DATA | N_EXT: | |
1473 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1474 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1475 | cache_ptr->symbol.flags = visible; | |
1476 | break; | |
1477 | ||
1478 | case N_BSS: case N_BSS | N_EXT: | |
1479 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1480 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1481 | cache_ptr->symbol.flags = visible; | |
1482 | break; | |
1483 | ||
1484 | case N_SETA: case N_SETA | N_EXT: | |
1485 | case N_SETT: case N_SETT | N_EXT: | |
1486 | case N_SETD: case N_SETD | N_EXT: | |
1487 | case N_SETB: case N_SETB | N_EXT: | |
1488 | { | |
1489 | /* This code is no longer needed. It used to be used to make | |
1490 | the linker handle set symbols, but they are now handled in | |
1491 | the add_symbols routine instead. */ | |
252b5132 RH |
1492 | switch (cache_ptr->type & N_TYPE) |
1493 | { | |
1494 | case N_SETA: | |
1495 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1496 | break; | |
1497 | case N_SETT: | |
1498 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1499 | break; | |
1500 | case N_SETD: | |
1501 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1502 | break; | |
1503 | case N_SETB: | |
1504 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1505 | break; | |
1506 | } | |
1507 | ||
1508 | cache_ptr->symbol.flags |= BSF_CONSTRUCTOR; | |
1509 | } | |
1510 | break; | |
1511 | ||
1512 | case N_WARNING: | |
1513 | /* This symbol is the text of a warning message. The next | |
1514 | symbol is the symbol to associate the warning with. If a | |
1515 | reference is made to that symbol, a warning is issued. */ | |
1516 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
1517 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1518 | break; | |
1519 | ||
1520 | case N_INDR: case N_INDR | N_EXT: | |
1521 | /* An indirect symbol. This consists of two symbols in a row. | |
1522 | The first symbol is the name of the indirection. The second | |
1523 | symbol is the name of the target. A reference to the first | |
1524 | symbol becomes a reference to the second. */ | |
1525 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible; | |
1526 | cache_ptr->symbol.section = bfd_ind_section_ptr; | |
1527 | break; | |
1528 | ||
1529 | case N_WEAKU: | |
1530 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1531 | cache_ptr->symbol.flags = BSF_WEAK; | |
1532 | break; | |
1533 | ||
1534 | case N_WEAKA: | |
1535 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1536 | cache_ptr->symbol.flags = BSF_WEAK; | |
1537 | break; | |
1538 | ||
1539 | case N_WEAKT: | |
1540 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1541 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1542 | cache_ptr->symbol.flags = BSF_WEAK; | |
1543 | break; | |
1544 | ||
1545 | case N_WEAKD: | |
1546 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1547 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1548 | cache_ptr->symbol.flags = BSF_WEAK; | |
1549 | break; | |
1550 | ||
1551 | case N_WEAKB: | |
1552 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1553 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1554 | cache_ptr->symbol.flags = BSF_WEAK; | |
1555 | break; | |
1556 | } | |
1557 | ||
b34976b6 | 1558 | return TRUE; |
252b5132 RH |
1559 | } |
1560 | ||
1561 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ | |
1562 | ||
b34976b6 | 1563 | static bfd_boolean |
116c20d2 NC |
1564 | translate_to_native_sym_flags (bfd *abfd, |
1565 | asymbol *cache_ptr, | |
1566 | struct external_nlist *sym_pointer) | |
252b5132 RH |
1567 | { |
1568 | bfd_vma value = cache_ptr->value; | |
1569 | asection *sec; | |
1570 | bfd_vma off; | |
1571 | ||
1572 | /* Mask out any existing type bits in case copying from one section | |
1573 | to another. */ | |
1574 | sym_pointer->e_type[0] &= ~N_TYPE; | |
1575 | ||
1576 | sec = bfd_get_section (cache_ptr); | |
1577 | off = 0; | |
1578 | ||
1579 | if (sec == NULL) | |
1580 | { | |
1581 | /* This case occurs, e.g., for the *DEBUG* section of a COFF | |
1582 | file. */ | |
4eca0228 | 1583 | _bfd_error_handler |
695344c0 | 1584 | /* xgettext:c-format */ |
dae82561 | 1585 | (_("%B: can not represent section for symbol `%s' in a.out " |
4eca0228 | 1586 | "object file format"), |
dae82561 | 1587 | abfd, |
252b5132 RH |
1588 | cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*")); |
1589 | bfd_set_error (bfd_error_nonrepresentable_section); | |
b34976b6 | 1590 | return FALSE; |
252b5132 RH |
1591 | } |
1592 | ||
1593 | if (sec->output_section != NULL) | |
1594 | { | |
1595 | off = sec->output_offset; | |
1596 | sec = sec->output_section; | |
1597 | } | |
1598 | ||
1599 | if (bfd_is_abs_section (sec)) | |
1600 | sym_pointer->e_type[0] |= N_ABS; | |
1601 | else if (sec == obj_textsec (abfd)) | |
1602 | sym_pointer->e_type[0] |= N_TEXT; | |
1603 | else if (sec == obj_datasec (abfd)) | |
1604 | sym_pointer->e_type[0] |= N_DATA; | |
1605 | else if (sec == obj_bsssec (abfd)) | |
1606 | sym_pointer->e_type[0] |= N_BSS; | |
1607 | else if (bfd_is_und_section (sec)) | |
1608 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1609 | else if (bfd_is_ind_section (sec)) | |
1610 | sym_pointer->e_type[0] = N_INDR; | |
1611 | else if (bfd_is_com_section (sec)) | |
1612 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1613 | else | |
1614 | { | |
e6af3a53 NC |
1615 | if (aout_section_merge_with_text_p (abfd, sec)) |
1616 | sym_pointer->e_type[0] |= N_TEXT; | |
1617 | else | |
1618 | { | |
4eca0228 | 1619 | _bfd_error_handler |
695344c0 | 1620 | /* xgettext:c-format */ |
dae82561 AM |
1621 | (_("%B: can not represent section `%A' in a.out object file format"), |
1622 | abfd, sec); | |
e6af3a53 NC |
1623 | bfd_set_error (bfd_error_nonrepresentable_section); |
1624 | return FALSE; | |
1625 | } | |
252b5132 RH |
1626 | } |
1627 | ||
f7c33884 | 1628 | /* Turn the symbol from section relative to absolute again. */ |
252b5132 RH |
1629 | value += sec->vma + off; |
1630 | ||
1631 | if ((cache_ptr->flags & BSF_WARNING) != 0) | |
1632 | sym_pointer->e_type[0] = N_WARNING; | |
1633 | ||
1634 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) | |
1635 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1636 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
1637 | sym_pointer->e_type[0] |= N_EXT; | |
930d924d L |
1638 | else if ((cache_ptr->flags & BSF_LOCAL) != 0) |
1639 | sym_pointer->e_type[0] &= ~N_EXT; | |
252b5132 RH |
1640 | |
1641 | if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0) | |
1642 | { | |
1643 | int type = ((aout_symbol_type *) cache_ptr)->type; | |
f7c33884 | 1644 | |
252b5132 RH |
1645 | switch (type) |
1646 | { | |
1647 | case N_ABS: type = N_SETA; break; | |
1648 | case N_TEXT: type = N_SETT; break; | |
1649 | case N_DATA: type = N_SETD; break; | |
1650 | case N_BSS: type = N_SETB; break; | |
1651 | } | |
1652 | sym_pointer->e_type[0] = type; | |
1653 | } | |
1654 | ||
1655 | if ((cache_ptr->flags & BSF_WEAK) != 0) | |
1656 | { | |
1657 | int type; | |
1658 | ||
1659 | switch (sym_pointer->e_type[0] & N_TYPE) | |
1660 | { | |
1661 | default: | |
1662 | case N_ABS: type = N_WEAKA; break; | |
1663 | case N_TEXT: type = N_WEAKT; break; | |
1664 | case N_DATA: type = N_WEAKD; break; | |
1665 | case N_BSS: type = N_WEAKB; break; | |
1666 | case N_UNDF: type = N_WEAKU; break; | |
1667 | } | |
1668 | sym_pointer->e_type[0] = type; | |
1669 | } | |
1670 | ||
923f08ff | 1671 | PUT_WORD (abfd, value, sym_pointer->e_value); |
252b5132 | 1672 | |
b34976b6 | 1673 | return TRUE; |
252b5132 RH |
1674 | } |
1675 | \f | |
0ef5a5bd | 1676 | /* Native-level interface to symbols. */ |
252b5132 RH |
1677 | |
1678 | asymbol * | |
116c20d2 | 1679 | NAME (aout, make_empty_symbol) (bfd *abfd) |
252b5132 | 1680 | { |
dc810e39 | 1681 | bfd_size_type amt = sizeof (aout_symbol_type); |
116c20d2 | 1682 | |
d3ce72d0 NC |
1683 | aout_symbol_type *new_symbol = (aout_symbol_type *) bfd_zalloc (abfd, amt); |
1684 | if (!new_symbol) | |
252b5132 | 1685 | return NULL; |
d3ce72d0 | 1686 | new_symbol->symbol.the_bfd = abfd; |
252b5132 | 1687 | |
d3ce72d0 | 1688 | return &new_symbol->symbol; |
252b5132 RH |
1689 | } |
1690 | ||
1691 | /* Translate a set of internal symbols into external symbols. */ | |
1692 | ||
b34976b6 | 1693 | bfd_boolean |
116c20d2 NC |
1694 | NAME (aout, translate_symbol_table) (bfd *abfd, |
1695 | aout_symbol_type *in, | |
1696 | struct external_nlist *ext, | |
1697 | bfd_size_type count, | |
1698 | char *str, | |
1699 | bfd_size_type strsize, | |
1700 | bfd_boolean dynamic) | |
252b5132 RH |
1701 | { |
1702 | struct external_nlist *ext_end; | |
1703 | ||
1704 | ext_end = ext + count; | |
1705 | for (; ext < ext_end; ext++, in++) | |
1706 | { | |
1707 | bfd_vma x; | |
1708 | ||
1709 | x = GET_WORD (abfd, ext->e_strx); | |
1710 | in->symbol.the_bfd = abfd; | |
1711 | ||
1712 | /* For the normal symbols, the zero index points at the number | |
1713 | of bytes in the string table but is to be interpreted as the | |
1714 | null string. For the dynamic symbols, the number of bytes in | |
1715 | the string table is stored in the __DYNAMIC structure and the | |
1716 | zero index points at an actual string. */ | |
1717 | if (x == 0 && ! dynamic) | |
1718 | in->symbol.name = ""; | |
1719 | else if (x < strsize) | |
1720 | in->symbol.name = str + x; | |
1721 | else | |
b34976b6 | 1722 | return FALSE; |
252b5132 RH |
1723 | |
1724 | in->symbol.value = GET_SWORD (abfd, ext->e_value); | |
dc810e39 AM |
1725 | in->desc = H_GET_16 (abfd, ext->e_desc); |
1726 | in->other = H_GET_8 (abfd, ext->e_other); | |
1727 | in->type = H_GET_8 (abfd, ext->e_type); | |
252b5132 RH |
1728 | in->symbol.udata.p = NULL; |
1729 | ||
1730 | if (! translate_from_native_sym_flags (abfd, in)) | |
b34976b6 | 1731 | return FALSE; |
252b5132 RH |
1732 | |
1733 | if (dynamic) | |
1734 | in->symbol.flags |= BSF_DYNAMIC; | |
1735 | } | |
1736 | ||
b34976b6 | 1737 | return TRUE; |
252b5132 RH |
1738 | } |
1739 | ||
1740 | /* We read the symbols into a buffer, which is discarded when this | |
1741 | function exits. We read the strings into a buffer large enough to | |
0ef5a5bd | 1742 | hold them all plus all the cached symbol entries. */ |
252b5132 | 1743 | |
b34976b6 | 1744 | bfd_boolean |
116c20d2 | 1745 | NAME (aout, slurp_symbol_table) (bfd *abfd) |
252b5132 RH |
1746 | { |
1747 | struct external_nlist *old_external_syms; | |
1748 | aout_symbol_type *cached; | |
dc810e39 | 1749 | bfd_size_type cached_size; |
252b5132 | 1750 | |
f7c33884 | 1751 | /* If there's no work to be done, don't do any. */ |
116c20d2 | 1752 | if (obj_aout_symbols (abfd) != NULL) |
b34976b6 | 1753 | return TRUE; |
252b5132 RH |
1754 | |
1755 | old_external_syms = obj_aout_external_syms (abfd); | |
1756 | ||
1757 | if (! aout_get_external_symbols (abfd)) | |
b34976b6 | 1758 | return FALSE; |
252b5132 | 1759 | |
dc810e39 | 1760 | cached_size = obj_aout_external_sym_count (abfd); |
87b32780 MS |
1761 | if (cached_size == 0) |
1762 | return TRUE; /* Nothing to do. */ | |
1763 | ||
dc810e39 | 1764 | cached_size *= sizeof (aout_symbol_type); |
a50b1753 | 1765 | cached = (aout_symbol_type *) bfd_zmalloc (cached_size); |
87b32780 | 1766 | if (cached == NULL) |
b34976b6 | 1767 | return FALSE; |
252b5132 RH |
1768 | |
1769 | /* Convert from external symbol information to internal. */ | |
116c20d2 | 1770 | if (! (NAME (aout, translate_symbol_table) |
252b5132 RH |
1771 | (abfd, cached, |
1772 | obj_aout_external_syms (abfd), | |
1773 | obj_aout_external_sym_count (abfd), | |
1774 | obj_aout_external_strings (abfd), | |
1775 | obj_aout_external_string_size (abfd), | |
b34976b6 | 1776 | FALSE))) |
252b5132 RH |
1777 | { |
1778 | free (cached); | |
b34976b6 | 1779 | return FALSE; |
252b5132 RH |
1780 | } |
1781 | ||
1782 | bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd); | |
1783 | ||
1784 | obj_aout_symbols (abfd) = cached; | |
1785 | ||
1786 | /* It is very likely that anybody who calls this function will not | |
1787 | want the external symbol information, so if it was allocated | |
1788 | because of our call to aout_get_external_symbols, we free it up | |
1789 | right away to save space. */ | |
116c20d2 NC |
1790 | if (old_external_syms == NULL |
1791 | && obj_aout_external_syms (abfd) != NULL) | |
252b5132 RH |
1792 | { |
1793 | #ifdef USE_MMAP | |
1794 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
1795 | #else | |
1796 | free (obj_aout_external_syms (abfd)); | |
1797 | #endif | |
1798 | obj_aout_external_syms (abfd) = NULL; | |
1799 | } | |
1800 | ||
b34976b6 | 1801 | return TRUE; |
252b5132 RH |
1802 | } |
1803 | \f | |
1804 | /* We use a hash table when writing out symbols so that we only write | |
1805 | out a particular string once. This helps particularly when the | |
1806 | linker writes out stabs debugging entries, because each different | |
1807 | contributing object file tends to have many duplicate stabs | |
1808 | strings. | |
1809 | ||
1810 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it | |
1811 | if BFD_TRADITIONAL_FORMAT is set. */ | |
1812 | ||
252b5132 RH |
1813 | /* Get the index of a string in a strtab, adding it if it is not |
1814 | already present. */ | |
1815 | ||
116c20d2 NC |
1816 | static inline bfd_size_type |
1817 | add_to_stringtab (bfd *abfd, | |
1818 | struct bfd_strtab_hash *tab, | |
1819 | const char *str, | |
1820 | bfd_boolean copy) | |
252b5132 | 1821 | { |
b34976b6 | 1822 | bfd_boolean hash; |
91d6fa6a | 1823 | bfd_size_type str_index; |
252b5132 RH |
1824 | |
1825 | /* An index of 0 always means the empty string. */ | |
1826 | if (str == 0 || *str == '\0') | |
1827 | return 0; | |
1828 | ||
1829 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx | |
1830 | doesn't understand a hashed string table. */ | |
b34976b6 | 1831 | hash = TRUE; |
252b5132 | 1832 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
b34976b6 | 1833 | hash = FALSE; |
252b5132 | 1834 | |
91d6fa6a | 1835 | str_index = _bfd_stringtab_add (tab, str, hash, copy); |
252b5132 | 1836 | |
91d6fa6a | 1837 | if (str_index != (bfd_size_type) -1) |
116c20d2 NC |
1838 | /* Add BYTES_IN_WORD to the return value to account for the |
1839 | space taken up by the string table size. */ | |
91d6fa6a | 1840 | str_index += BYTES_IN_WORD; |
252b5132 | 1841 | |
91d6fa6a | 1842 | return str_index; |
252b5132 RH |
1843 | } |
1844 | ||
1845 | /* Write out a strtab. ABFD is already at the right location in the | |
1846 | file. */ | |
1847 | ||
b34976b6 | 1848 | static bfd_boolean |
116c20d2 | 1849 | emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab) |
252b5132 RH |
1850 | { |
1851 | bfd_byte buffer[BYTES_IN_WORD]; | |
dc810e39 | 1852 | bfd_size_type amt = BYTES_IN_WORD; |
252b5132 RH |
1853 | |
1854 | /* The string table starts with the size. */ | |
1855 | PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer); | |
116c20d2 | 1856 | if (bfd_bwrite ((void *) buffer, amt, abfd) != amt) |
b34976b6 | 1857 | return FALSE; |
252b5132 RH |
1858 | |
1859 | return _bfd_stringtab_emit (abfd, tab); | |
1860 | } | |
1861 | \f | |
b34976b6 | 1862 | bfd_boolean |
116c20d2 | 1863 | NAME (aout, write_syms) (bfd *abfd) |
252b5132 RH |
1864 | { |
1865 | unsigned int count ; | |
1866 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1867 | struct bfd_strtab_hash *strtab; | |
1868 | ||
1869 | strtab = _bfd_stringtab_init (); | |
1870 | if (strtab == NULL) | |
b34976b6 | 1871 | return FALSE; |
252b5132 RH |
1872 | |
1873 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1874 | { | |
1875 | asymbol *g = generic[count]; | |
1876 | bfd_size_type indx; | |
1877 | struct external_nlist nsp; | |
dc810e39 | 1878 | bfd_size_type amt; |
252b5132 | 1879 | |
b34976b6 | 1880 | indx = add_to_stringtab (abfd, strtab, g->name, FALSE); |
252b5132 RH |
1881 | if (indx == (bfd_size_type) -1) |
1882 | goto error_return; | |
1883 | PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx); | |
1884 | ||
923f08ff | 1885 | if (bfd_asymbol_flavour (g) == abfd->xvec->flavour) |
252b5132 | 1886 | { |
923f08ff AM |
1887 | H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc); |
1888 | H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other); | |
1889 | H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type); | |
252b5132 RH |
1890 | } |
1891 | else | |
1892 | { | |
dc810e39 AM |
1893 | H_PUT_16 (abfd, 0, nsp.e_desc); |
1894 | H_PUT_8 (abfd, 0, nsp.e_other); | |
1895 | H_PUT_8 (abfd, 0, nsp.e_type); | |
252b5132 RH |
1896 | } |
1897 | ||
1898 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) | |
1899 | goto error_return; | |
1900 | ||
dc810e39 | 1901 | amt = EXTERNAL_NLIST_SIZE; |
116c20d2 | 1902 | if (bfd_bwrite ((void *) &nsp, amt, abfd) != amt) |
252b5132 RH |
1903 | goto error_return; |
1904 | ||
1905 | /* NB: `KEEPIT' currently overlays `udata.p', so set this only | |
1906 | here, at the end. */ | |
1907 | g->KEEPIT = count; | |
1908 | } | |
1909 | ||
1910 | if (! emit_stringtab (abfd, strtab)) | |
1911 | goto error_return; | |
1912 | ||
1913 | _bfd_stringtab_free (strtab); | |
1914 | ||
b34976b6 | 1915 | return TRUE; |
252b5132 RH |
1916 | |
1917 | error_return: | |
1918 | _bfd_stringtab_free (strtab); | |
b34976b6 | 1919 | return FALSE; |
252b5132 | 1920 | } |
252b5132 RH |
1921 | \f |
1922 | long | |
116c20d2 | 1923 | NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location) |
252b5132 | 1924 | { |
116c20d2 NC |
1925 | unsigned int counter = 0; |
1926 | aout_symbol_type *symbase; | |
252b5132 | 1927 | |
116c20d2 NC |
1928 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
1929 | return -1; | |
252b5132 | 1930 | |
116c20d2 NC |
1931 | for (symbase = obj_aout_symbols (abfd); |
1932 | counter++ < bfd_get_symcount (abfd); | |
1933 | ) | |
1934 | *(location++) = (asymbol *) (symbase++); | |
1935 | *location++ =0; | |
1936 | return bfd_get_symcount (abfd); | |
252b5132 | 1937 | } |
252b5132 | 1938 | \f |
f7c33884 | 1939 | /* Standard reloc stuff. */ |
0ef5a5bd | 1940 | /* Output standard relocation information to a file in target byte order. */ |
252b5132 | 1941 | |
116c20d2 NC |
1942 | extern void NAME (aout, swap_std_reloc_out) |
1943 | (bfd *, arelent *, struct reloc_std_external *); | |
252b5132 RH |
1944 | |
1945 | void | |
116c20d2 NC |
1946 | NAME (aout, swap_std_reloc_out) (bfd *abfd, |
1947 | arelent *g, | |
1948 | struct reloc_std_external *natptr) | |
252b5132 RH |
1949 | { |
1950 | int r_index; | |
1951 | asymbol *sym = *(g->sym_ptr_ptr); | |
1952 | int r_extern; | |
1953 | unsigned int r_length; | |
1954 | int r_pcrel; | |
1955 | int r_baserel, r_jmptable, r_relative; | |
1956 | asection *output_section = sym->section->output_section; | |
1957 | ||
923f08ff | 1958 | PUT_WORD (abfd, g->address, natptr->r_address); |
252b5132 | 1959 | |
e2996cc3 | 1960 | BFD_ASSERT (g->howto != NULL); |
f7c33884 NC |
1961 | r_length = g->howto->size ; /* Size as a power of two. */ |
1962 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
252b5132 RH |
1963 | /* XXX This relies on relocs coming from a.out files. */ |
1964 | r_baserel = (g->howto->type & 8) != 0; | |
1965 | r_jmptable = (g->howto->type & 16) != 0; | |
1966 | r_relative = (g->howto->type & 32) != 0; | |
1967 | ||
f7c33884 | 1968 | /* Name was clobbered by aout_write_syms to be symbol index. */ |
252b5132 RH |
1969 | |
1970 | /* If this relocation is relative to a symbol then set the | |
1971 | r_index to the symbols index, and the r_extern bit. | |
1972 | ||
1973 | Absolute symbols can come in in two ways, either as an offset | |
1974 | from the abs section, or as a symbol which has an abs value. | |
f7c33884 | 1975 | check for that here. */ |
252b5132 | 1976 | |
252b5132 RH |
1977 | if (bfd_is_com_section (output_section) |
1978 | || bfd_is_abs_section (output_section) | |
22184a77 NC |
1979 | || bfd_is_und_section (output_section) |
1980 | /* PR gas/3041 a.out relocs against weak symbols | |
1981 | must be treated as if they were against externs. */ | |
1982 | || (sym->flags & BSF_WEAK)) | |
252b5132 RH |
1983 | { |
1984 | if (bfd_abs_section_ptr->symbol == sym) | |
f7c33884 NC |
1985 | { |
1986 | /* Whoops, looked like an abs symbol, but is | |
1987 | really an offset from the abs section. */ | |
1988 | r_index = N_ABS; | |
1989 | r_extern = 0; | |
1990 | } | |
252b5132 | 1991 | else |
f7c33884 NC |
1992 | { |
1993 | /* Fill in symbol. */ | |
1994 | r_extern = 1; | |
1995 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
1996 | } | |
252b5132 RH |
1997 | } |
1998 | else | |
1999 | { | |
f7c33884 | 2000 | /* Just an ordinary section. */ |
252b5132 RH |
2001 | r_extern = 0; |
2002 | r_index = output_section->target_index; | |
2003 | } | |
2004 | ||
f7c33884 | 2005 | /* Now the fun stuff. */ |
923f08ff AM |
2006 | if (bfd_header_big_endian (abfd)) |
2007 | { | |
252b5132 RH |
2008 | natptr->r_index[0] = r_index >> 16; |
2009 | natptr->r_index[1] = r_index >> 8; | |
2010 | natptr->r_index[2] = r_index; | |
923f08ff AM |
2011 | natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) |
2012 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
2013 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
2014 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
2015 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
2016 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
2017 | } | |
2018 | else | |
2019 | { | |
2020 | natptr->r_index[2] = r_index >> 16; | |
2021 | natptr->r_index[1] = r_index >> 8; | |
2022 | natptr->r_index[0] = r_index; | |
2023 | natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
2024 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
2025 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
2026 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
2027 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
2028 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
2029 | } | |
252b5132 RH |
2030 | } |
2031 | ||
f7c33884 | 2032 | /* Extended stuff. */ |
0ef5a5bd | 2033 | /* Output extended relocation information to a file in target byte order. */ |
252b5132 | 2034 | |
116c20d2 NC |
2035 | extern void NAME (aout, swap_ext_reloc_out) |
2036 | (bfd *, arelent *, struct reloc_ext_external *); | |
252b5132 RH |
2037 | |
2038 | void | |
116c20d2 NC |
2039 | NAME (aout, swap_ext_reloc_out) (bfd *abfd, |
2040 | arelent *g, | |
2041 | struct reloc_ext_external *natptr) | |
252b5132 RH |
2042 | { |
2043 | int r_index; | |
2044 | int r_extern; | |
2045 | unsigned int r_type; | |
dc810e39 | 2046 | bfd_vma r_addend; |
252b5132 RH |
2047 | asymbol *sym = *(g->sym_ptr_ptr); |
2048 | asection *output_section = sym->section->output_section; | |
2049 | ||
2050 | PUT_WORD (abfd, g->address, natptr->r_address); | |
2051 | ||
2052 | r_type = (unsigned int) g->howto->type; | |
2053 | ||
2054 | r_addend = g->addend; | |
2055 | if ((sym->flags & BSF_SECTION_SYM) != 0) | |
2056 | r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma; | |
2057 | ||
2058 | /* If this relocation is relative to a symbol then set the | |
2059 | r_index to the symbols index, and the r_extern bit. | |
2060 | ||
2061 | Absolute symbols can come in in two ways, either as an offset | |
2062 | from the abs section, or as a symbol which has an abs value. | |
2063 | check for that here. */ | |
252b5132 RH |
2064 | if (bfd_is_abs_section (bfd_get_section (sym))) |
2065 | { | |
2066 | r_extern = 0; | |
2067 | r_index = N_ABS; | |
2068 | } | |
2069 | else if ((sym->flags & BSF_SECTION_SYM) == 0) | |
2070 | { | |
2071 | if (bfd_is_und_section (bfd_get_section (sym)) | |
2072 | || (sym->flags & BSF_GLOBAL) != 0) | |
2073 | r_extern = 1; | |
2074 | else | |
2075 | r_extern = 0; | |
2076 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
2077 | } | |
2078 | else | |
2079 | { | |
f7c33884 | 2080 | /* Just an ordinary section. */ |
252b5132 RH |
2081 | r_extern = 0; |
2082 | r_index = output_section->target_index; | |
2083 | } | |
2084 | ||
f7c33884 | 2085 | /* Now the fun stuff. */ |
923f08ff AM |
2086 | if (bfd_header_big_endian (abfd)) |
2087 | { | |
2088 | natptr->r_index[0] = r_index >> 16; | |
2089 | natptr->r_index[1] = r_index >> 8; | |
2090 | natptr->r_index[2] = r_index; | |
2091 | natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
2092 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
2093 | } | |
2094 | else | |
2095 | { | |
2096 | natptr->r_index[2] = r_index >> 16; | |
2097 | natptr->r_index[1] = r_index >> 8; | |
2098 | natptr->r_index[0] = r_index; | |
2099 | natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
2100 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE)); | |
2101 | } | |
252b5132 RH |
2102 | |
2103 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
2104 | } | |
2105 | ||
2106 | /* BFD deals internally with all things based from the section they're | |
2107 | in. so, something in 10 bytes into a text section with a base of | |
2108 | 50 would have a symbol (.text+10) and know .text vma was 50. | |
2109 | ||
2110 | Aout keeps all it's symbols based from zero, so the symbol would | |
2111 | contain 60. This macro subs the base of each section from the value | |
923f08ff AM |
2112 | to give the true offset from the section. */ |
2113 | ||
2114 | #define MOVE_ADDRESS(ad) \ | |
2115 | if (r_extern) \ | |
2116 | { \ | |
2117 | /* Undefined symbol. */ \ | |
2118 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
252b5132 | 2119 | cache_ptr->addend = ad; \ |
252b5132 | 2120 | } \ |
923f08ff AM |
2121 | else \ |
2122 | { \ | |
2123 | /* Defined, section relative. Replace symbol with pointer to \ | |
2124 | symbol which points to section. */ \ | |
2125 | switch (r_index) \ | |
2126 | { \ | |
2127 | case N_TEXT: \ | |
2128 | case N_TEXT | N_EXT: \ | |
2129 | cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \ | |
2130 | cache_ptr->addend = ad - su->textsec->vma; \ | |
2131 | break; \ | |
2132 | case N_DATA: \ | |
2133 | case N_DATA | N_EXT: \ | |
2134 | cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \ | |
2135 | cache_ptr->addend = ad - su->datasec->vma; \ | |
2136 | break; \ | |
2137 | case N_BSS: \ | |
2138 | case N_BSS | N_EXT: \ | |
2139 | cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \ | |
2140 | cache_ptr->addend = ad - su->bsssec->vma; \ | |
2141 | break; \ | |
2142 | default: \ | |
2143 | case N_ABS: \ | |
2144 | case N_ABS | N_EXT: \ | |
2145 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ | |
2146 | cache_ptr->addend = ad; \ | |
2147 | break; \ | |
2148 | } \ | |
2149 | } | |
252b5132 RH |
2150 | |
2151 | void | |
116c20d2 NC |
2152 | NAME (aout, swap_ext_reloc_in) (bfd *abfd, |
2153 | struct reloc_ext_external *bytes, | |
2154 | arelent *cache_ptr, | |
2155 | asymbol **symbols, | |
2156 | bfd_size_type symcount) | |
252b5132 RH |
2157 | { |
2158 | unsigned int r_index; | |
2159 | int r_extern; | |
2160 | unsigned int r_type; | |
2161 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2162 | ||
2163 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
2164 | ||
f7c33884 | 2165 | /* Now the fun stuff. */ |
923f08ff AM |
2166 | if (bfd_header_big_endian (abfd)) |
2167 | { | |
d45913a0 DA |
2168 | r_index = (((unsigned int) bytes->r_index[0] << 16) |
2169 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2170 | | bytes->r_index[2]); |
2171 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
2172 | r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
2173 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
2174 | } | |
2175 | else | |
2176 | { | |
d45913a0 DA |
2177 | r_index = (((unsigned int) bytes->r_index[2] << 16) |
2178 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2179 | | bytes->r_index[0]); |
2180 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
2181 | r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
2182 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
2183 | } | |
252b5132 | 2184 | |
ad756e3f AM |
2185 | if (r_type < TABLE_SIZE (howto_table_ext)) |
2186 | cache_ptr->howto = howto_table_ext + r_type; | |
2187 | else | |
2188 | cache_ptr->howto = NULL; | |
252b5132 RH |
2189 | |
2190 | /* Base relative relocs are always against the symbol table, | |
2191 | regardless of the setting of r_extern. r_extern just reflects | |
2192 | whether the symbol the reloc is against is local or global. */ | |
d45913a0 DA |
2193 | if (r_type == (unsigned int) RELOC_BASE10 |
2194 | || r_type == (unsigned int) RELOC_BASE13 | |
2195 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
2196 | r_extern = 1; |
2197 | ||
2198 | if (r_extern && r_index > symcount) | |
2199 | { | |
2200 | /* We could arrange to return an error, but it might be useful | |
2201 | to see the file even if it is bad. */ | |
2202 | r_extern = 0; | |
2203 | r_index = N_ABS; | |
2204 | } | |
2205 | ||
923f08ff | 2206 | MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend)); |
252b5132 RH |
2207 | } |
2208 | ||
2209 | void | |
116c20d2 NC |
2210 | NAME (aout, swap_std_reloc_in) (bfd *abfd, |
2211 | struct reloc_std_external *bytes, | |
2212 | arelent *cache_ptr, | |
2213 | asymbol **symbols, | |
2214 | bfd_size_type symcount) | |
252b5132 RH |
2215 | { |
2216 | unsigned int r_index; | |
2217 | int r_extern; | |
2218 | unsigned int r_length; | |
2219 | int r_pcrel; | |
2220 | int r_baserel, r_jmptable, r_relative; | |
2221 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2222 | unsigned int howto_idx; | |
2223 | ||
dc810e39 | 2224 | cache_ptr->address = H_GET_32 (abfd, bytes->r_address); |
252b5132 | 2225 | |
f7c33884 | 2226 | /* Now the fun stuff. */ |
923f08ff AM |
2227 | if (bfd_header_big_endian (abfd)) |
2228 | { | |
d45913a0 DA |
2229 | r_index = (((unsigned int) bytes->r_index[0] << 16) |
2230 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2231 | | bytes->r_index[2]); |
2232 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
2233 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
2234 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
2235 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
2236 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
2237 | r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
2238 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
2239 | } | |
2240 | else | |
2241 | { | |
d45913a0 DA |
2242 | r_index = (((unsigned int) bytes->r_index[2] << 16) |
2243 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2244 | | bytes->r_index[0]); |
2245 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
2246 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
2247 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
2248 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
2249 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
2250 | r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
2251 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
2252 | } | |
252b5132 | 2253 | |
923f08ff AM |
2254 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel |
2255 | + 16 * r_jmptable + 32 * r_relative); | |
ad756e3f AM |
2256 | if (howto_idx < TABLE_SIZE (howto_table_std)) |
2257 | { | |
2258 | cache_ptr->howto = howto_table_std + howto_idx; | |
2259 | if (cache_ptr->howto->type == (unsigned int) -1) | |
2260 | cache_ptr->howto = NULL; | |
2261 | } | |
2262 | else | |
2263 | cache_ptr->howto = NULL; | |
252b5132 RH |
2264 | |
2265 | /* Base relative relocs are always against the symbol table, | |
2266 | regardless of the setting of r_extern. r_extern just reflects | |
2267 | whether the symbol the reloc is against is local or global. */ | |
2268 | if (r_baserel) | |
2269 | r_extern = 1; | |
2270 | ||
2271 | if (r_extern && r_index > symcount) | |
2272 | { | |
2273 | /* We could arrange to return an error, but it might be useful | |
2274 | to see the file even if it is bad. */ | |
2275 | r_extern = 0; | |
2276 | r_index = N_ABS; | |
2277 | } | |
2278 | ||
923f08ff | 2279 | MOVE_ADDRESS (0); |
252b5132 RH |
2280 | } |
2281 | ||
2282 | /* Read and swap the relocs for a section. */ | |
2283 | ||
b34976b6 | 2284 | bfd_boolean |
116c20d2 | 2285 | NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols) |
252b5132 | 2286 | { |
dc810e39 | 2287 | bfd_size_type count; |
252b5132 | 2288 | bfd_size_type reloc_size; |
116c20d2 | 2289 | void * relocs; |
252b5132 RH |
2290 | arelent *reloc_cache; |
2291 | size_t each_size; | |
2292 | unsigned int counter = 0; | |
2293 | arelent *cache_ptr; | |
dc810e39 | 2294 | bfd_size_type amt; |
252b5132 RH |
2295 | |
2296 | if (asect->relocation) | |
b34976b6 | 2297 | return TRUE; |
252b5132 RH |
2298 | |
2299 | if (asect->flags & SEC_CONSTRUCTOR) | |
b34976b6 | 2300 | return TRUE; |
252b5132 RH |
2301 | |
2302 | if (asect == obj_datasec (abfd)) | |
923f08ff | 2303 | reloc_size = exec_hdr (abfd)->a_drsize; |
252b5132 | 2304 | else if (asect == obj_textsec (abfd)) |
923f08ff | 2305 | reloc_size = exec_hdr (abfd)->a_trsize; |
252b5132 RH |
2306 | else if (asect == obj_bsssec (abfd)) |
2307 | reloc_size = 0; | |
2308 | else | |
2309 | { | |
2310 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 2311 | return FALSE; |
252b5132 RH |
2312 | } |
2313 | ||
078c4bfc MS |
2314 | if (reloc_size == 0) |
2315 | return TRUE; /* Nothing to be done. */ | |
2316 | ||
252b5132 | 2317 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) |
b34976b6 | 2318 | return FALSE; |
252b5132 RH |
2319 | |
2320 | each_size = obj_reloc_entry_size (abfd); | |
2321 | ||
2322 | count = reloc_size / each_size; | |
078c4bfc MS |
2323 | if (count == 0) |
2324 | return TRUE; /* Nothing to be done. */ | |
252b5132 | 2325 | |
dc810e39 | 2326 | amt = count * sizeof (arelent); |
a50b1753 | 2327 | reloc_cache = (arelent *) bfd_zmalloc (amt); |
078c4bfc | 2328 | if (reloc_cache == NULL) |
b34976b6 | 2329 | return FALSE; |
252b5132 | 2330 | |
dc810e39 | 2331 | relocs = bfd_malloc (reloc_size); |
078c4bfc | 2332 | if (relocs == NULL) |
252b5132 RH |
2333 | { |
2334 | free (reloc_cache); | |
b34976b6 | 2335 | return FALSE; |
252b5132 RH |
2336 | } |
2337 | ||
dc810e39 | 2338 | if (bfd_bread (relocs, reloc_size, abfd) != reloc_size) |
252b5132 RH |
2339 | { |
2340 | free (relocs); | |
2341 | free (reloc_cache); | |
b34976b6 | 2342 | return FALSE; |
252b5132 RH |
2343 | } |
2344 | ||
2345 | cache_ptr = reloc_cache; | |
2346 | if (each_size == RELOC_EXT_SIZE) | |
2347 | { | |
dc810e39 | 2348 | struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; |
252b5132 RH |
2349 | |
2350 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
1642229e | 2351 | MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols, |
dc810e39 | 2352 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
2353 | } |
2354 | else | |
2355 | { | |
dc810e39 | 2356 | struct reloc_std_external *rptr = (struct reloc_std_external *) relocs; |
252b5132 RH |
2357 | |
2358 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
2359 | MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols, | |
dc810e39 | 2360 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
2361 | } |
2362 | ||
2363 | free (relocs); | |
2364 | ||
2365 | asect->relocation = reloc_cache; | |
2366 | asect->reloc_count = cache_ptr - reloc_cache; | |
2367 | ||
b34976b6 | 2368 | return TRUE; |
252b5132 RH |
2369 | } |
2370 | ||
2371 | /* Write out a relocation section into an object file. */ | |
2372 | ||
b34976b6 | 2373 | bfd_boolean |
116c20d2 | 2374 | NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section) |
252b5132 RH |
2375 | { |
2376 | arelent **generic; | |
2377 | unsigned char *native, *natptr; | |
2378 | size_t each_size; | |
2379 | ||
2380 | unsigned int count = section->reloc_count; | |
dc810e39 | 2381 | bfd_size_type natsize; |
252b5132 RH |
2382 | |
2383 | if (count == 0 || section->orelocation == NULL) | |
b34976b6 | 2384 | return TRUE; |
252b5132 RH |
2385 | |
2386 | each_size = obj_reloc_entry_size (abfd); | |
dc810e39 | 2387 | natsize = (bfd_size_type) each_size * count; |
a50b1753 | 2388 | native = (unsigned char *) bfd_zalloc (abfd, natsize); |
252b5132 | 2389 | if (!native) |
b34976b6 | 2390 | return FALSE; |
252b5132 RH |
2391 | |
2392 | generic = section->orelocation; | |
2393 | ||
2394 | if (each_size == RELOC_EXT_SIZE) | |
2395 | { | |
2396 | for (natptr = native; | |
2397 | count != 0; | |
2398 | --count, natptr += each_size, ++generic) | |
e2996cc3 | 2399 | { |
92744f05 NC |
2400 | /* PR 20921: If the howto field has not been initialised then skip |
2401 | this reloc. | |
2402 | PR 20929: Similarly for the symbol field. */ | |
2403 | if ((*generic)->howto == NULL | |
2404 | || (*generic)->sym_ptr_ptr == NULL) | |
e2996cc3 NC |
2405 | { |
2406 | bfd_set_error (bfd_error_invalid_operation); | |
92744f05 NC |
2407 | _bfd_error_handler (_("\ |
2408 | %B: attempt to write out unknown reloc type"), abfd); | |
e2996cc3 NC |
2409 | return FALSE; |
2410 | } | |
2411 | MY_swap_ext_reloc_out (abfd, *generic, | |
2412 | (struct reloc_ext_external *) natptr); | |
2413 | } | |
252b5132 RH |
2414 | } |
2415 | else | |
2416 | { | |
2417 | for (natptr = native; | |
2418 | count != 0; | |
2419 | --count, natptr += each_size, ++generic) | |
e2996cc3 | 2420 | { |
92744f05 NC |
2421 | if ((*generic)->howto == NULL |
2422 | || (*generic)->sym_ptr_ptr == NULL) | |
e2996cc3 NC |
2423 | { |
2424 | bfd_set_error (bfd_error_invalid_operation); | |
92744f05 NC |
2425 | _bfd_error_handler (_("\ |
2426 | %B: attempt to write out unknown reloc type"), abfd); | |
e2996cc3 NC |
2427 | return FALSE; |
2428 | } | |
2429 | MY_swap_std_reloc_out (abfd, *generic, | |
2430 | (struct reloc_std_external *) natptr); | |
2431 | } | |
252b5132 RH |
2432 | } |
2433 | ||
116c20d2 | 2434 | if (bfd_bwrite ((void *) native, natsize, abfd) != natsize) |
dc810e39 | 2435 | { |
923f08ff | 2436 | bfd_release (abfd, native); |
b34976b6 | 2437 | return FALSE; |
dc810e39 | 2438 | } |
252b5132 RH |
2439 | bfd_release (abfd, native); |
2440 | ||
b34976b6 | 2441 | return TRUE; |
252b5132 RH |
2442 | } |
2443 | ||
f7c33884 NC |
2444 | /* This is stupid. This function should be a boolean predicate. */ |
2445 | ||
252b5132 | 2446 | long |
116c20d2 NC |
2447 | NAME (aout, canonicalize_reloc) (bfd *abfd, |
2448 | sec_ptr section, | |
2449 | arelent **relptr, | |
2450 | asymbol **symbols) | |
252b5132 RH |
2451 | { |
2452 | arelent *tblptr = section->relocation; | |
2453 | unsigned int count; | |
2454 | ||
2455 | if (section == obj_bsssec (abfd)) | |
2456 | { | |
2457 | *relptr = NULL; | |
2458 | return 0; | |
2459 | } | |
2460 | ||
116c20d2 | 2461 | if (!(tblptr || NAME (aout, slurp_reloc_table) (abfd, section, symbols))) |
252b5132 RH |
2462 | return -1; |
2463 | ||
923f08ff AM |
2464 | if (section->flags & SEC_CONSTRUCTOR) |
2465 | { | |
2466 | arelent_chain *chain = section->constructor_chain; | |
2467 | for (count = 0; count < section->reloc_count; count ++) | |
2468 | { | |
2469 | *relptr ++ = &chain->relent; | |
2470 | chain = chain->next; | |
2471 | } | |
252b5132 | 2472 | } |
923f08ff AM |
2473 | else |
2474 | { | |
2475 | tblptr = section->relocation; | |
252b5132 | 2476 | |
923f08ff AM |
2477 | for (count = 0; count++ < section->reloc_count; ) |
2478 | { | |
2479 | *relptr++ = tblptr++; | |
2480 | } | |
2481 | } | |
252b5132 RH |
2482 | *relptr = 0; |
2483 | ||
2484 | return section->reloc_count; | |
2485 | } | |
2486 | ||
2487 | long | |
116c20d2 | 2488 | NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect) |
252b5132 | 2489 | { |
923f08ff AM |
2490 | if (bfd_get_format (abfd) != bfd_object) |
2491 | { | |
2492 | bfd_set_error (bfd_error_invalid_operation); | |
2493 | return -1; | |
2494 | } | |
f7c33884 | 2495 | |
923f08ff | 2496 | if (asect->flags & SEC_CONSTRUCTOR) |
116c20d2 | 2497 | return sizeof (arelent *) * (asect->reloc_count + 1); |
252b5132 RH |
2498 | |
2499 | if (asect == obj_datasec (abfd)) | |
116c20d2 NC |
2500 | return sizeof (arelent *) |
2501 | * ((exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd)) | |
2502 | + 1); | |
252b5132 RH |
2503 | |
2504 | if (asect == obj_textsec (abfd)) | |
116c20d2 NC |
2505 | return sizeof (arelent *) |
2506 | * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd)) | |
2507 | + 1); | |
252b5132 RH |
2508 | |
2509 | if (asect == obj_bsssec (abfd)) | |
2510 | return sizeof (arelent *); | |
2511 | ||
2512 | if (asect == obj_bsssec (abfd)) | |
2513 | return 0; | |
2514 | ||
2515 | bfd_set_error (bfd_error_invalid_operation); | |
2516 | return -1; | |
2517 | } | |
252b5132 RH |
2518 | \f |
2519 | long | |
116c20d2 | 2520 | NAME (aout, get_symtab_upper_bound) (bfd *abfd) |
252b5132 | 2521 | { |
116c20d2 | 2522 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
252b5132 RH |
2523 | return -1; |
2524 | ||
2525 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
2526 | } | |
2527 | ||
1725a96e | 2528 | alent * |
116c20d2 NC |
2529 | NAME (aout, get_lineno) (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
2530 | asymbol *ignore_symbol ATTRIBUTE_UNUSED) | |
252b5132 | 2531 | { |
116c20d2 | 2532 | return NULL; |
252b5132 RH |
2533 | } |
2534 | ||
252b5132 | 2535 | void |
116c20d2 NC |
2536 | NAME (aout, get_symbol_info) (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
2537 | asymbol *symbol, | |
2538 | symbol_info *ret) | |
252b5132 RH |
2539 | { |
2540 | bfd_symbol_info (symbol, ret); | |
2541 | ||
2542 | if (ret->type == '?') | |
2543 | { | |
923f08ff | 2544 | int type_code = aout_symbol (symbol)->type & 0xff; |
252b5132 RH |
2545 | const char *stab_name = bfd_get_stab_name (type_code); |
2546 | static char buf[10]; | |
2547 | ||
2548 | if (stab_name == NULL) | |
2549 | { | |
e60b52c6 | 2550 | sprintf (buf, "(%d)", type_code); |
252b5132 RH |
2551 | stab_name = buf; |
2552 | } | |
2553 | ret->type = '-'; | |
2554 | ret->stab_type = type_code; | |
923f08ff AM |
2555 | ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff); |
2556 | ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff); | |
252b5132 RH |
2557 | ret->stab_name = stab_name; |
2558 | } | |
2559 | } | |
2560 | ||
252b5132 | 2561 | void |
116c20d2 NC |
2562 | NAME (aout, print_symbol) (bfd *abfd, |
2563 | void * afile, | |
2564 | asymbol *symbol, | |
2565 | bfd_print_symbol_type how) | |
252b5132 RH |
2566 | { |
2567 | FILE *file = (FILE *)afile; | |
2568 | ||
923f08ff | 2569 | switch (how) |
252b5132 | 2570 | { |
923f08ff AM |
2571 | case bfd_print_symbol_name: |
2572 | if (symbol->name) | |
2573 | fprintf (file,"%s", symbol->name); | |
2574 | break; | |
2575 | case bfd_print_symbol_more: | |
2576 | fprintf (file,"%4x %2x %2x", | |
2577 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2578 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2579 | (unsigned) (aout_symbol (symbol)->type)); | |
2580 | break; | |
2581 | case bfd_print_symbol_all: | |
2582 | { | |
2583 | const char *section_name = symbol->section->name; | |
252b5132 | 2584 | |
116c20d2 | 2585 | bfd_print_symbol_vandf (abfd, (void *)file, symbol); |
252b5132 | 2586 | |
923f08ff AM |
2587 | fprintf (file," %-5s %04x %02x %02x", |
2588 | section_name, | |
2589 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2590 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2591 | (unsigned) (aout_symbol (symbol)->type & 0xff)); | |
2592 | if (symbol->name) | |
2593 | fprintf (file," %s", symbol->name); | |
2594 | } | |
2595 | break; | |
252b5132 | 2596 | } |
252b5132 RH |
2597 | } |
2598 | ||
2599 | /* If we don't have to allocate more than 1MB to hold the generic | |
2600 | symbols, we use the generic minisymbol methord: it's faster, since | |
2601 | it only translates the symbols once, not multiple times. */ | |
2602 | #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) | |
2603 | ||
2604 | /* Read minisymbols. For minisymbols, we use the unmodified a.out | |
2605 | symbols. The minisymbol_to_symbol function translates these into | |
2606 | BFD asymbol structures. */ | |
2607 | ||
2608 | long | |
116c20d2 NC |
2609 | NAME (aout, read_minisymbols) (bfd *abfd, |
2610 | bfd_boolean dynamic, | |
2611 | void * *minisymsp, | |
2612 | unsigned int *sizep) | |
252b5132 RH |
2613 | { |
2614 | if (dynamic) | |
116c20d2 NC |
2615 | /* We could handle the dynamic symbols here as well, but it's |
2616 | easier to hand them off. */ | |
2617 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
252b5132 RH |
2618 | |
2619 | if (! aout_get_external_symbols (abfd)) | |
2620 | return -1; | |
2621 | ||
2622 | if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2623 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2624 | ||
116c20d2 | 2625 | *minisymsp = (void *) obj_aout_external_syms (abfd); |
252b5132 RH |
2626 | |
2627 | /* By passing the external symbols back from this routine, we are | |
2628 | giving up control over the memory block. Clear | |
2629 | obj_aout_external_syms, so that we do not try to free it | |
2630 | ourselves. */ | |
2631 | obj_aout_external_syms (abfd) = NULL; | |
2632 | ||
2633 | *sizep = EXTERNAL_NLIST_SIZE; | |
2634 | return obj_aout_external_sym_count (abfd); | |
2635 | } | |
2636 | ||
2637 | /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an | |
2638 | unmodified a.out symbol. The SYM argument is a structure returned | |
2639 | by bfd_make_empty_symbol, which we fill in here. */ | |
2640 | ||
2641 | asymbol * | |
116c20d2 NC |
2642 | NAME (aout, minisymbol_to_symbol) (bfd *abfd, |
2643 | bfd_boolean dynamic, | |
2644 | const void * minisym, | |
2645 | asymbol *sym) | |
252b5132 RH |
2646 | { |
2647 | if (dynamic | |
2648 | || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2649 | return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); | |
2650 | ||
2651 | memset (sym, 0, sizeof (aout_symbol_type)); | |
2652 | ||
2653 | /* We call translate_symbol_table to translate a single symbol. */ | |
116c20d2 | 2654 | if (! (NAME (aout, translate_symbol_table) |
252b5132 RH |
2655 | (abfd, |
2656 | (aout_symbol_type *) sym, | |
2657 | (struct external_nlist *) minisym, | |
2658 | (bfd_size_type) 1, | |
2659 | obj_aout_external_strings (abfd), | |
2660 | obj_aout_external_string_size (abfd), | |
b34976b6 | 2661 | FALSE))) |
252b5132 RH |
2662 | return NULL; |
2663 | ||
2664 | return sym; | |
2665 | } | |
2666 | ||
f7c33884 NC |
2667 | /* Provided a BFD, a section and an offset into the section, calculate |
2668 | and return the name of the source file and the line nearest to the | |
2669 | wanted location. */ | |
252b5132 | 2670 | |
b34976b6 | 2671 | bfd_boolean |
116c20d2 | 2672 | NAME (aout, find_nearest_line) (bfd *abfd, |
116c20d2 | 2673 | asymbol **symbols, |
fb167eb2 | 2674 | asection *section, |
116c20d2 NC |
2675 | bfd_vma offset, |
2676 | const char **filename_ptr, | |
2677 | const char **functionname_ptr, | |
fb167eb2 AM |
2678 | unsigned int *line_ptr, |
2679 | unsigned int *disriminator_ptr) | |
252b5132 | 2680 | { |
f7c33884 | 2681 | /* Run down the file looking for the filename, function and linenumber. */ |
252b5132 | 2682 | asymbol **p; |
dc810e39 AM |
2683 | const char *directory_name = NULL; |
2684 | const char *main_file_name = NULL; | |
2685 | const char *current_file_name = NULL; | |
116c20d2 | 2686 | const char *line_file_name = NULL; /* Value of current_file_name at line number. */ |
dc810e39 | 2687 | const char *line_directory_name = NULL; /* Value of directory_name at line number. */ |
252b5132 RH |
2688 | bfd_vma low_line_vma = 0; |
2689 | bfd_vma low_func_vma = 0; | |
2690 | asymbol *func = 0; | |
dc810e39 | 2691 | bfd_size_type filelen, funclen; |
252b5132 RH |
2692 | char *buf; |
2693 | ||
2694 | *filename_ptr = abfd->filename; | |
50455f1a | 2695 | *functionname_ptr = NULL; |
252b5132 | 2696 | *line_ptr = 0; |
fb167eb2 AM |
2697 | if (disriminator_ptr) |
2698 | *disriminator_ptr = 0; | |
f7c33884 | 2699 | |
116c20d2 | 2700 | if (symbols != NULL) |
923f08ff AM |
2701 | { |
2702 | for (p = symbols; *p; p++) | |
2703 | { | |
2704 | aout_symbol_type *q = (aout_symbol_type *) (*p); | |
2705 | next: | |
2706 | switch (q->type) | |
2707 | { | |
2708 | case N_TEXT: | |
2709 | /* If this looks like a file name symbol, and it comes after | |
2710 | the line number we have found so far, but before the | |
2711 | offset, then we have probably not found the right line | |
2712 | number. */ | |
2713 | if (q->symbol.value <= offset | |
2714 | && ((q->symbol.value > low_line_vma | |
2715 | && (line_file_name != NULL | |
2716 | || *line_ptr != 0)) | |
2717 | || (q->symbol.value > low_func_vma | |
2718 | && func != NULL))) | |
2719 | { | |
2720 | const char *symname; | |
252b5132 | 2721 | |
923f08ff AM |
2722 | symname = q->symbol.name; |
2723 | if (strcmp (symname + strlen (symname) - 2, ".o") == 0) | |
2724 | { | |
2725 | if (q->symbol.value > low_line_vma) | |
2726 | { | |
2727 | *line_ptr = 0; | |
2728 | line_file_name = NULL; | |
2729 | } | |
2730 | if (q->symbol.value > low_func_vma) | |
2731 | func = NULL; | |
2732 | } | |
2733 | } | |
2734 | break; | |
252b5132 | 2735 | |
923f08ff AM |
2736 | case N_SO: |
2737 | /* If this symbol is less than the offset, but greater than | |
2738 | the line number we have found so far, then we have not | |
2739 | found the right line number. */ | |
2740 | if (q->symbol.value <= offset) | |
2741 | { | |
2742 | if (q->symbol.value > low_line_vma) | |
2743 | { | |
2744 | *line_ptr = 0; | |
2745 | line_file_name = NULL; | |
2746 | } | |
2747 | if (q->symbol.value > low_func_vma) | |
2748 | func = NULL; | |
2749 | } | |
252b5132 | 2750 | |
923f08ff AM |
2751 | main_file_name = current_file_name = q->symbol.name; |
2752 | /* Look ahead to next symbol to check if that too is an N_SO. */ | |
2753 | p++; | |
2754 | if (*p == NULL) | |
c3864421 | 2755 | goto done; |
923f08ff AM |
2756 | q = (aout_symbol_type *) (*p); |
2757 | if (q->type != (int)N_SO) | |
2758 | goto next; | |
2759 | ||
2760 | /* Found a second N_SO First is directory; second is filename. */ | |
2761 | directory_name = current_file_name; | |
2762 | main_file_name = current_file_name = q->symbol.name; | |
2763 | if (obj_textsec (abfd) != section) | |
2764 | goto done; | |
2765 | break; | |
2766 | case N_SOL: | |
2767 | current_file_name = q->symbol.name; | |
2768 | break; | |
252b5132 | 2769 | |
923f08ff | 2770 | case N_SLINE: |
252b5132 | 2771 | |
923f08ff AM |
2772 | case N_DSLINE: |
2773 | case N_BSLINE: | |
2774 | /* We'll keep this if it resolves nearer than the one we have | |
2775 | already. */ | |
2776 | if (q->symbol.value >= low_line_vma | |
2777 | && q->symbol.value <= offset) | |
2778 | { | |
2779 | *line_ptr = q->desc; | |
2780 | low_line_vma = q->symbol.value; | |
2781 | line_file_name = current_file_name; | |
2782 | line_directory_name = directory_name; | |
2783 | } | |
2784 | break; | |
2785 | case N_FUN: | |
2786 | { | |
f7c33884 | 2787 | /* We'll keep this if it is nearer than the one we have already. */ |
923f08ff | 2788 | if (q->symbol.value >= low_func_vma && |
f7c33884 NC |
2789 | q->symbol.value <= offset) |
2790 | { | |
2791 | low_func_vma = q->symbol.value; | |
2792 | func = (asymbol *)q; | |
2793 | } | |
923f08ff AM |
2794 | else if (q->symbol.value > offset) |
2795 | goto done; | |
2796 | } | |
2797 | break; | |
2798 | } | |
252b5132 | 2799 | } |
252b5132 | 2800 | } |
252b5132 RH |
2801 | |
2802 | done: | |
2803 | if (*line_ptr != 0) | |
2804 | { | |
2805 | main_file_name = line_file_name; | |
2806 | directory_name = line_directory_name; | |
2807 | } | |
2808 | ||
2809 | if (main_file_name == NULL | |
5af11cab | 2810 | || IS_ABSOLUTE_PATH (main_file_name) |
252b5132 RH |
2811 | || directory_name == NULL) |
2812 | filelen = 0; | |
2813 | else | |
2814 | filelen = strlen (directory_name) + strlen (main_file_name); | |
f7c33884 | 2815 | |
252b5132 RH |
2816 | if (func == NULL) |
2817 | funclen = 0; | |
2818 | else | |
2819 | funclen = strlen (bfd_asymbol_name (func)); | |
2820 | ||
2821 | if (adata (abfd).line_buf != NULL) | |
2822 | free (adata (abfd).line_buf); | |
f7c33884 | 2823 | |
252b5132 RH |
2824 | if (filelen + funclen == 0) |
2825 | adata (abfd).line_buf = buf = NULL; | |
2826 | else | |
2827 | { | |
a50b1753 | 2828 | buf = (char *) bfd_malloc (filelen + funclen + 3); |
252b5132 RH |
2829 | adata (abfd).line_buf = buf; |
2830 | if (buf == NULL) | |
b34976b6 | 2831 | return FALSE; |
252b5132 RH |
2832 | } |
2833 | ||
2834 | if (main_file_name != NULL) | |
2835 | { | |
5af11cab | 2836 | if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL) |
252b5132 RH |
2837 | *filename_ptr = main_file_name; |
2838 | else | |
2839 | { | |
50455f1a NC |
2840 | if (buf == NULL) |
2841 | /* PR binutils/20891: In a corrupt input file both | |
2842 | main_file_name and directory_name can be empty... */ | |
2843 | * filename_ptr = NULL; | |
2844 | else | |
2845 | { | |
2846 | snprintf (buf, filelen + 1, "%s%s", directory_name, | |
2847 | main_file_name); | |
2848 | *filename_ptr = buf; | |
2849 | buf += filelen + 1; | |
2850 | } | |
252b5132 RH |
2851 | } |
2852 | } | |
2853 | ||
2854 | if (func) | |
2855 | { | |
2856 | const char *function = func->name; | |
dc810e39 | 2857 | char *colon; |
252b5132 | 2858 | |
e82ab856 NC |
2859 | if (buf == NULL) |
2860 | { | |
2861 | /* PR binutils/20892: In a corrupt input file func can be empty. */ | |
2862 | * functionname_ptr = NULL; | |
2863 | return TRUE; | |
2864 | } | |
252b5132 RH |
2865 | /* The caller expects a symbol name. We actually have a |
2866 | function name, without the leading underscore. Put the | |
2867 | underscore back in, so that the caller gets a symbol name. */ | |
2868 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
2869 | strcpy (buf, function); | |
2870 | else | |
2871 | { | |
2872 | buf[0] = bfd_get_symbol_leading_char (abfd); | |
2873 | strcpy (buf + 1, function); | |
2874 | } | |
f7c33884 | 2875 | /* Have to remove : stuff. */ |
dc810e39 AM |
2876 | colon = strchr (buf, ':'); |
2877 | if (colon != NULL) | |
2878 | *colon = '\0'; | |
252b5132 RH |
2879 | *functionname_ptr = buf; |
2880 | } | |
2881 | ||
b34976b6 | 2882 | return TRUE; |
252b5132 RH |
2883 | } |
2884 | ||
252b5132 | 2885 | int |
a6b96beb AM |
2886 | NAME (aout, sizeof_headers) (bfd *abfd, |
2887 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
252b5132 | 2888 | { |
923f08ff | 2889 | return adata (abfd).exec_bytes_size; |
252b5132 RH |
2890 | } |
2891 | ||
2892 | /* Free all information we have cached for this BFD. We can always | |
2893 | read it again later if we need it. */ | |
2894 | ||
b34976b6 | 2895 | bfd_boolean |
116c20d2 | 2896 | NAME (aout, bfd_free_cached_info) (bfd *abfd) |
252b5132 RH |
2897 | { |
2898 | asection *o; | |
2899 | ||
920581c5 L |
2900 | if (bfd_get_format (abfd) != bfd_object |
2901 | || abfd->tdata.aout_data == NULL) | |
b34976b6 | 2902 | return TRUE; |
252b5132 RH |
2903 | |
2904 | #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } | |
2905 | BFCI_FREE (obj_aout_symbols (abfd)); | |
2906 | #ifdef USE_MMAP | |
2907 | obj_aout_external_syms (abfd) = 0; | |
2908 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2909 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2910 | obj_aout_external_strings (abfd) = 0; | |
2911 | #else | |
2912 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2913 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
2914 | #endif | |
116c20d2 | 2915 | for (o = abfd->sections; o != NULL; o = o->next) |
252b5132 RH |
2916 | BFCI_FREE (o->relocation); |
2917 | #undef BFCI_FREE | |
2918 | ||
b34976b6 | 2919 | return TRUE; |
252b5132 RH |
2920 | } |
2921 | \f | |
2922 | /* a.out link code. */ | |
2923 | ||
252b5132 RH |
2924 | /* Routine to create an entry in an a.out link hash table. */ |
2925 | ||
2926 | struct bfd_hash_entry * | |
116c20d2 NC |
2927 | NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry, |
2928 | struct bfd_hash_table *table, | |
2929 | const char *string) | |
252b5132 RH |
2930 | { |
2931 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2932 | ||
2933 | /* Allocate the structure if it has not already been allocated by a | |
2934 | subclass. */ | |
116c20d2 | 2935 | if (ret == NULL) |
a50b1753 NC |
2936 | ret = (struct aout_link_hash_entry *) bfd_hash_allocate (table, |
2937 | sizeof (* ret)); | |
116c20d2 NC |
2938 | if (ret == NULL) |
2939 | return NULL; | |
252b5132 RH |
2940 | |
2941 | /* Call the allocation method of the superclass. */ | |
2942 | ret = ((struct aout_link_hash_entry *) | |
2943 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2944 | table, string)); | |
2945 | if (ret) | |
2946 | { | |
2947 | /* Set local fields. */ | |
b34976b6 | 2948 | ret->written = FALSE; |
252b5132 RH |
2949 | ret->indx = -1; |
2950 | } | |
2951 | ||
2952 | return (struct bfd_hash_entry *) ret; | |
2953 | } | |
2954 | ||
2955 | /* Initialize an a.out link hash table. */ | |
2956 | ||
b34976b6 | 2957 | bfd_boolean |
116c20d2 NC |
2958 | NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table, |
2959 | bfd *abfd, | |
2960 | struct bfd_hash_entry *(*newfunc) | |
2961 | (struct bfd_hash_entry *, struct bfd_hash_table *, | |
66eb6687 AM |
2962 | const char *), |
2963 | unsigned int entsize) | |
252b5132 | 2964 | { |
66eb6687 | 2965 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
252b5132 RH |
2966 | } |
2967 | ||
2968 | /* Create an a.out link hash table. */ | |
2969 | ||
2970 | struct bfd_link_hash_table * | |
116c20d2 | 2971 | NAME (aout, link_hash_table_create) (bfd *abfd) |
252b5132 RH |
2972 | { |
2973 | struct aout_link_hash_table *ret; | |
116c20d2 | 2974 | bfd_size_type amt = sizeof (* ret); |
252b5132 | 2975 | |
a50b1753 | 2976 | ret = (struct aout_link_hash_table *) bfd_malloc (amt); |
252b5132 | 2977 | if (ret == NULL) |
116c20d2 | 2978 | return NULL; |
5ed6aba4 | 2979 | |
66eb6687 AM |
2980 | if (!NAME (aout, link_hash_table_init) (ret, abfd, |
2981 | NAME (aout, link_hash_newfunc), | |
2982 | sizeof (struct aout_link_hash_entry))) | |
252b5132 RH |
2983 | { |
2984 | free (ret); | |
116c20d2 | 2985 | return NULL; |
252b5132 RH |
2986 | } |
2987 | return &ret->root; | |
2988 | } | |
2989 | ||
116c20d2 | 2990 | /* Add all symbols from an object file to the hash table. */ |
252b5132 | 2991 | |
b34976b6 | 2992 | static bfd_boolean |
116c20d2 | 2993 | aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 2994 | { |
116c20d2 NC |
2995 | bfd_boolean (*add_one_symbol) |
2996 | (struct bfd_link_info *, bfd *, const char *, flagword, asection *, | |
2997 | bfd_vma, const char *, bfd_boolean, bfd_boolean, | |
2998 | struct bfd_link_hash_entry **); | |
2999 | struct external_nlist *syms; | |
3000 | bfd_size_type sym_count; | |
3001 | char *strings; | |
3002 | bfd_boolean copy; | |
3003 | struct aout_link_hash_entry **sym_hash; | |
3004 | struct external_nlist *p; | |
3005 | struct external_nlist *pend; | |
3006 | bfd_size_type amt; | |
252b5132 | 3007 | |
116c20d2 NC |
3008 | syms = obj_aout_external_syms (abfd); |
3009 | sym_count = obj_aout_external_sym_count (abfd); | |
3010 | strings = obj_aout_external_strings (abfd); | |
3011 | if (info->keep_memory) | |
3012 | copy = FALSE; | |
3013 | else | |
3014 | copy = TRUE; | |
252b5132 | 3015 | |
116c20d2 | 3016 | if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) |
252b5132 | 3017 | { |
116c20d2 NC |
3018 | if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) |
3019 | (abfd, info, &syms, &sym_count, &strings))) | |
b34976b6 | 3020 | return FALSE; |
252b5132 RH |
3021 | } |
3022 | ||
20c6e70e MS |
3023 | if (sym_count == 0) |
3024 | return TRUE; /* Nothing to do. */ | |
3025 | ||
116c20d2 NC |
3026 | /* We keep a list of the linker hash table entries that correspond |
3027 | to particular symbols. We could just look them up in the hash | |
3028 | table, but keeping the list is more efficient. Perhaps this | |
3029 | should be conditional on info->keep_memory. */ | |
3030 | amt = sym_count * sizeof (struct aout_link_hash_entry *); | |
a50b1753 | 3031 | sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt); |
20c6e70e | 3032 | if (sym_hash == NULL) |
116c20d2 NC |
3033 | return FALSE; |
3034 | obj_aout_sym_hashes (abfd) = sym_hash; | |
252b5132 | 3035 | |
116c20d2 NC |
3036 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; |
3037 | if (add_one_symbol == NULL) | |
3038 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
252b5132 | 3039 | |
116c20d2 NC |
3040 | p = syms; |
3041 | pend = p + sym_count; | |
3042 | for (; p < pend; p++, sym_hash++) | |
252b5132 | 3043 | { |
116c20d2 | 3044 | int type; |
252b5132 | 3045 | const char *name; |
116c20d2 NC |
3046 | bfd_vma value; |
3047 | asection *section; | |
3048 | flagword flags; | |
3049 | const char *string; | |
252b5132 | 3050 | |
116c20d2 | 3051 | *sym_hash = NULL; |
252b5132 | 3052 | |
116c20d2 | 3053 | type = H_GET_8 (abfd, p->e_type); |
252b5132 | 3054 | |
116c20d2 NC |
3055 | /* Ignore debugging symbols. */ |
3056 | if ((type & N_STAB) != 0) | |
3057 | continue; | |
252b5132 | 3058 | |
e517df3d | 3059 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
531336e3 | 3060 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3061 | return FALSE; |
116c20d2 NC |
3062 | name = strings + GET_WORD (abfd, p->e_strx); |
3063 | value = GET_WORD (abfd, p->e_value); | |
3064 | flags = BSF_GLOBAL; | |
3065 | string = NULL; | |
3066 | switch (type) | |
252b5132 | 3067 | { |
116c20d2 NC |
3068 | default: |
3069 | abort (); | |
f7c33884 | 3070 | |
116c20d2 NC |
3071 | case N_UNDF: |
3072 | case N_ABS: | |
3073 | case N_TEXT: | |
3074 | case N_DATA: | |
3075 | case N_BSS: | |
3076 | case N_FN_SEQ: | |
3077 | case N_COMM: | |
3078 | case N_SETV: | |
3079 | case N_FN: | |
3080 | /* Ignore symbols that are not externally visible. */ | |
3081 | continue; | |
3082 | case N_INDR: | |
3083 | /* Ignore local indirect symbol. */ | |
3084 | ++p; | |
3085 | ++sym_hash; | |
3086 | continue; | |
252b5132 | 3087 | |
116c20d2 NC |
3088 | case N_UNDF | N_EXT: |
3089 | if (value == 0) | |
f7c33884 | 3090 | { |
116c20d2 NC |
3091 | section = bfd_und_section_ptr; |
3092 | flags = 0; | |
252b5132 RH |
3093 | } |
3094 | else | |
3095 | section = bfd_com_section_ptr; | |
3096 | break; | |
3097 | case N_ABS | N_EXT: | |
3098 | section = bfd_abs_section_ptr; | |
3099 | break; | |
3100 | case N_TEXT | N_EXT: | |
3101 | section = obj_textsec (abfd); | |
3102 | value -= bfd_get_section_vma (abfd, section); | |
3103 | break; | |
3104 | case N_DATA | N_EXT: | |
3105 | case N_SETV | N_EXT: | |
3106 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
3107 | translate_from_native_sym_flags. */ | |
3108 | section = obj_datasec (abfd); | |
3109 | value -= bfd_get_section_vma (abfd, section); | |
3110 | break; | |
3111 | case N_BSS | N_EXT: | |
3112 | section = obj_bsssec (abfd); | |
3113 | value -= bfd_get_section_vma (abfd, section); | |
3114 | break; | |
3115 | case N_INDR | N_EXT: | |
3116 | /* An indirect symbol. The next symbol is the symbol | |
3117 | which this one really is. */ | |
39d4daf6 NC |
3118 | /* See PR 20925 for a reproducer. */ |
3119 | if (p + 1 >= pend) | |
3120 | return FALSE; | |
252b5132 | 3121 | ++p; |
e517df3d | 3122 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
daae68f4 | 3123 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3124 | return FALSE; |
252b5132 RH |
3125 | string = strings + GET_WORD (abfd, p->e_strx); |
3126 | section = bfd_ind_section_ptr; | |
3127 | flags |= BSF_INDIRECT; | |
3128 | break; | |
3129 | case N_COMM | N_EXT: | |
3130 | section = bfd_com_section_ptr; | |
3131 | break; | |
3132 | case N_SETA: case N_SETA | N_EXT: | |
3133 | section = bfd_abs_section_ptr; | |
3134 | flags |= BSF_CONSTRUCTOR; | |
3135 | break; | |
3136 | case N_SETT: case N_SETT | N_EXT: | |
3137 | section = obj_textsec (abfd); | |
3138 | flags |= BSF_CONSTRUCTOR; | |
3139 | value -= bfd_get_section_vma (abfd, section); | |
3140 | break; | |
3141 | case N_SETD: case N_SETD | N_EXT: | |
3142 | section = obj_datasec (abfd); | |
3143 | flags |= BSF_CONSTRUCTOR; | |
3144 | value -= bfd_get_section_vma (abfd, section); | |
3145 | break; | |
3146 | case N_SETB: case N_SETB | N_EXT: | |
3147 | section = obj_bsssec (abfd); | |
3148 | flags |= BSF_CONSTRUCTOR; | |
3149 | value -= bfd_get_section_vma (abfd, section); | |
3150 | break; | |
3151 | case N_WARNING: | |
3152 | /* A warning symbol. The next symbol is the one to warn | |
9f400ee9 HPN |
3153 | about. If there is no next symbol, just look away. */ |
3154 | if (p + 1 >= pend) | |
3155 | return TRUE; | |
252b5132 RH |
3156 | ++p; |
3157 | string = name; | |
e517df3d | 3158 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
daae68f4 | 3159 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3160 | return FALSE; |
252b5132 RH |
3161 | name = strings + GET_WORD (abfd, p->e_strx); |
3162 | section = bfd_und_section_ptr; | |
3163 | flags |= BSF_WARNING; | |
3164 | break; | |
3165 | case N_WEAKU: | |
3166 | section = bfd_und_section_ptr; | |
3167 | flags = BSF_WEAK; | |
3168 | break; | |
3169 | case N_WEAKA: | |
3170 | section = bfd_abs_section_ptr; | |
3171 | flags = BSF_WEAK; | |
3172 | break; | |
3173 | case N_WEAKT: | |
3174 | section = obj_textsec (abfd); | |
3175 | value -= bfd_get_section_vma (abfd, section); | |
3176 | flags = BSF_WEAK; | |
3177 | break; | |
3178 | case N_WEAKD: | |
3179 | section = obj_datasec (abfd); | |
3180 | value -= bfd_get_section_vma (abfd, section); | |
3181 | flags = BSF_WEAK; | |
3182 | break; | |
3183 | case N_WEAKB: | |
3184 | section = obj_bsssec (abfd); | |
3185 | value -= bfd_get_section_vma (abfd, section); | |
3186 | flags = BSF_WEAK; | |
3187 | break; | |
3188 | } | |
3189 | ||
3190 | if (! ((*add_one_symbol) | |
b34976b6 | 3191 | (info, abfd, name, flags, section, value, string, copy, FALSE, |
252b5132 | 3192 | (struct bfd_link_hash_entry **) sym_hash))) |
b34976b6 | 3193 | return FALSE; |
252b5132 RH |
3194 | |
3195 | /* Restrict the maximum alignment of a common symbol based on | |
3196 | the architecture, since a.out has no way to represent | |
3197 | alignment requirements of a section in a .o file. FIXME: | |
3198 | This isn't quite right: it should use the architecture of the | |
3199 | output file, not the input files. */ | |
3200 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
3201 | && ((*sym_hash)->root.u.c.p->alignment_power > | |
3202 | bfd_get_arch_info (abfd)->section_align_power)) | |
3203 | (*sym_hash)->root.u.c.p->alignment_power = | |
3204 | bfd_get_arch_info (abfd)->section_align_power; | |
3205 | ||
3206 | /* If this is a set symbol, and we are not building sets, then | |
3207 | it is possible for the hash entry to not have been set. In | |
3208 | such a case, treat the symbol as not globally defined. */ | |
3209 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
3210 | { | |
3211 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
3212 | *sym_hash = NULL; | |
3213 | } | |
3214 | ||
3215 | if (type == (N_INDR | N_EXT) || type == N_WARNING) | |
3216 | ++sym_hash; | |
3217 | } | |
3218 | ||
b34976b6 | 3219 | return TRUE; |
252b5132 | 3220 | } |
252b5132 | 3221 | |
116c20d2 NC |
3222 | /* Free up the internal symbols read from an a.out file. */ |
3223 | ||
3224 | static bfd_boolean | |
3225 | aout_link_free_symbols (bfd *abfd) | |
252b5132 | 3226 | { |
116c20d2 NC |
3227 | if (obj_aout_external_syms (abfd) != NULL) |
3228 | { | |
3229 | #ifdef USE_MMAP | |
3230 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
3231 | #else | |
3232 | free ((void *) obj_aout_external_syms (abfd)); | |
3233 | #endif | |
3234 | obj_aout_external_syms (abfd) = NULL; | |
3235 | } | |
3236 | if (obj_aout_external_strings (abfd) != NULL) | |
3237 | { | |
3238 | #ifdef USE_MMAP | |
3239 | bfd_free_window (&obj_aout_string_window (abfd)); | |
3240 | #else | |
3241 | free ((void *) obj_aout_external_strings (abfd)); | |
3242 | #endif | |
3243 | obj_aout_external_strings (abfd) = NULL; | |
3244 | } | |
3245 | return TRUE; | |
3246 | } | |
252b5132 | 3247 | |
116c20d2 | 3248 | /* Add symbols from an a.out object file. */ |
252b5132 | 3249 | |
116c20d2 NC |
3250 | static bfd_boolean |
3251 | aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) | |
252b5132 | 3252 | { |
116c20d2 NC |
3253 | if (! aout_get_external_symbols (abfd)) |
3254 | return FALSE; | |
3255 | if (! aout_link_add_symbols (abfd, info)) | |
3256 | return FALSE; | |
3257 | if (! info->keep_memory) | |
3258 | { | |
3259 | if (! aout_link_free_symbols (abfd)) | |
3260 | return FALSE; | |
3261 | } | |
3262 | return TRUE; | |
3263 | } | |
252b5132 | 3264 | |
116c20d2 NC |
3265 | /* Look through the internal symbols to see if this object file should |
3266 | be included in the link. We should include this object file if it | |
3267 | defines any symbols which are currently undefined. If this object | |
3268 | file defines a common symbol, then we may adjust the size of the | |
3269 | known symbol but we do not include the object file in the link | |
3270 | (unless there is some other reason to include it). */ | |
252b5132 | 3271 | |
116c20d2 NC |
3272 | static bfd_boolean |
3273 | aout_link_check_ar_symbols (bfd *abfd, | |
3274 | struct bfd_link_info *info, | |
5d3236ee DK |
3275 | bfd_boolean *pneeded, |
3276 | bfd **subsbfd) | |
252b5132 | 3277 | { |
116c20d2 NC |
3278 | struct external_nlist *p; |
3279 | struct external_nlist *pend; | |
3280 | char *strings; | |
252b5132 | 3281 | |
116c20d2 | 3282 | *pneeded = FALSE; |
252b5132 | 3283 | |
116c20d2 NC |
3284 | /* Look through all the symbols. */ |
3285 | p = obj_aout_external_syms (abfd); | |
3286 | pend = p + obj_aout_external_sym_count (abfd); | |
3287 | strings = obj_aout_external_strings (abfd); | |
3288 | for (; p < pend; p++) | |
3289 | { | |
3290 | int type = H_GET_8 (abfd, p->e_type); | |
3291 | const char *name; | |
3292 | struct bfd_link_hash_entry *h; | |
252b5132 | 3293 | |
116c20d2 NC |
3294 | /* Ignore symbols that are not externally visible. This is an |
3295 | optimization only, as we check the type more thoroughly | |
3296 | below. */ | |
3297 | if (((type & N_EXT) == 0 | |
3298 | || (type & N_STAB) != 0 | |
3299 | || type == N_FN) | |
3300 | && type != N_WEAKA | |
3301 | && type != N_WEAKT | |
3302 | && type != N_WEAKD | |
3303 | && type != N_WEAKB) | |
3304 | { | |
3305 | if (type == N_WARNING | |
3306 | || type == N_INDR) | |
3307 | ++p; | |
3308 | continue; | |
3309 | } | |
3310 | ||
3311 | name = strings + GET_WORD (abfd, p->e_strx); | |
3312 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); | |
3313 | ||
3314 | /* We are only interested in symbols that are currently | |
3315 | undefined or common. */ | |
3316 | if (h == NULL | |
3317 | || (h->type != bfd_link_hash_undefined | |
3318 | && h->type != bfd_link_hash_common)) | |
3319 | { | |
3320 | if (type == (N_INDR | N_EXT)) | |
3321 | ++p; | |
3322 | continue; | |
3323 | } | |
3324 | ||
3325 | if (type == (N_TEXT | N_EXT) | |
3326 | || type == (N_DATA | N_EXT) | |
3327 | || type == (N_BSS | N_EXT) | |
3328 | || type == (N_ABS | N_EXT) | |
3329 | || type == (N_INDR | N_EXT)) | |
3330 | { | |
3331 | /* This object file defines this symbol. We must link it | |
3332 | in. This is true regardless of whether the current | |
3333 | definition of the symbol is undefined or common. | |
3334 | ||
3335 | If the current definition is common, we have a case in | |
3336 | which we have already seen an object file including: | |
3337 | int a; | |
3338 | and this object file from the archive includes: | |
3339 | int a = 5; | |
3340 | In such a case, whether to include this object is target | |
3341 | dependant for backward compatibility. | |
3342 | ||
3343 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
3344 | element if the symbol is defined in the .data section, | |
3345 | but not if it is defined in the .text section. That | |
3346 | seems a bit crazy to me, and it has not been implemented | |
3347 | yet. However, it might be correct. */ | |
3348 | if (h->type == bfd_link_hash_common) | |
3349 | { | |
3350 | int skip = 0; | |
3351 | ||
f88dc410 | 3352 | switch (info->common_skip_ar_symbols) |
116c20d2 NC |
3353 | { |
3354 | case bfd_link_common_skip_text: | |
3355 | skip = (type == (N_TEXT | N_EXT)); | |
3356 | break; | |
3357 | case bfd_link_common_skip_data: | |
3358 | skip = (type == (N_DATA | N_EXT)); | |
3359 | break; | |
3360 | default: | |
3361 | case bfd_link_common_skip_all: | |
3362 | skip = 1; | |
3363 | break; | |
3364 | } | |
3365 | ||
3366 | if (skip) | |
3367 | continue; | |
3368 | } | |
3369 | ||
0e144ba7 AM |
3370 | if (!(*info->callbacks |
3371 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3372 | return FALSE; |
3373 | *pneeded = TRUE; | |
3374 | return TRUE; | |
3375 | } | |
3376 | ||
3377 | if (type == (N_UNDF | N_EXT)) | |
3378 | { | |
3379 | bfd_vma value; | |
3380 | ||
3381 | value = GET_WORD (abfd, p->e_value); | |
3382 | if (value != 0) | |
3383 | { | |
3384 | /* This symbol is common in the object from the archive | |
3385 | file. */ | |
3386 | if (h->type == bfd_link_hash_undefined) | |
3387 | { | |
3388 | bfd *symbfd; | |
3389 | unsigned int power; | |
3390 | ||
3391 | symbfd = h->u.undef.abfd; | |
3392 | if (symbfd == NULL) | |
3393 | { | |
3394 | /* This symbol was created as undefined from | |
3395 | outside BFD. We assume that we should link | |
3396 | in the object file. This is done for the -u | |
3397 | option in the linker. */ | |
0e144ba7 AM |
3398 | if (!(*info->callbacks |
3399 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3400 | return FALSE; |
3401 | *pneeded = TRUE; | |
3402 | return TRUE; | |
3403 | } | |
3404 | /* Turn the current link symbol into a common | |
3405 | symbol. It is already on the undefs list. */ | |
3406 | h->type = bfd_link_hash_common; | |
a50b1753 | 3407 | h->u.c.p = (struct bfd_link_hash_common_entry *) |
0e144ba7 AM |
3408 | bfd_hash_allocate (&info->hash->table, |
3409 | sizeof (struct bfd_link_hash_common_entry)); | |
116c20d2 NC |
3410 | if (h->u.c.p == NULL) |
3411 | return FALSE; | |
3412 | ||
3413 | h->u.c.size = value; | |
3414 | ||
3415 | /* FIXME: This isn't quite right. The maximum | |
3416 | alignment of a common symbol should be set by the | |
3417 | architecture of the output file, not of the input | |
3418 | file. */ | |
3419 | power = bfd_log2 (value); | |
3420 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
3421 | power = bfd_get_arch_info (abfd)->section_align_power; | |
3422 | h->u.c.p->alignment_power = power; | |
3423 | ||
3424 | h->u.c.p->section = bfd_make_section_old_way (symbfd, | |
3425 | "COMMON"); | |
3426 | } | |
3427 | else | |
3428 | { | |
3429 | /* Adjust the size of the common symbol if | |
3430 | necessary. */ | |
3431 | if (value > h->u.c.size) | |
3432 | h->u.c.size = value; | |
3433 | } | |
3434 | } | |
3435 | } | |
3436 | ||
3437 | if (type == N_WEAKA | |
3438 | || type == N_WEAKT | |
3439 | || type == N_WEAKD | |
3440 | || type == N_WEAKB) | |
3441 | { | |
3442 | /* This symbol is weak but defined. We must pull it in if | |
3443 | the current link symbol is undefined, but we don't want | |
3444 | it if the current link symbol is common. */ | |
3445 | if (h->type == bfd_link_hash_undefined) | |
3446 | { | |
0e144ba7 AM |
3447 | if (!(*info->callbacks |
3448 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3449 | return FALSE; |
3450 | *pneeded = TRUE; | |
3451 | return TRUE; | |
3452 | } | |
3453 | } | |
3454 | } | |
3455 | ||
3456 | /* We do not need this object file. */ | |
3457 | return TRUE; | |
3458 | } | |
3459 | /* Check a single archive element to see if we need to include it in | |
3460 | the link. *PNEEDED is set according to whether this element is | |
3461 | needed in the link or not. This is called from | |
3462 | _bfd_generic_link_add_archive_symbols. */ | |
3463 | ||
3464 | static bfd_boolean | |
3465 | aout_link_check_archive_element (bfd *abfd, | |
3466 | struct bfd_link_info *info, | |
13e570f8 AM |
3467 | struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED, |
3468 | const char *name ATTRIBUTE_UNUSED, | |
116c20d2 NC |
3469 | bfd_boolean *pneeded) |
3470 | { | |
0e144ba7 AM |
3471 | bfd *oldbfd; |
3472 | bfd_boolean needed; | |
5d3236ee | 3473 | |
0e144ba7 | 3474 | if (!aout_get_external_symbols (abfd)) |
116c20d2 NC |
3475 | return FALSE; |
3476 | ||
0e144ba7 AM |
3477 | oldbfd = abfd; |
3478 | if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd)) | |
116c20d2 NC |
3479 | return FALSE; |
3480 | ||
0e144ba7 AM |
3481 | needed = *pneeded; |
3482 | if (needed) | |
116c20d2 | 3483 | { |
5d3236ee DK |
3484 | /* Potentially, the add_archive_element hook may have set a |
3485 | substitute BFD for us. */ | |
0e144ba7 AM |
3486 | if (abfd != oldbfd) |
3487 | { | |
3488 | if (!info->keep_memory | |
3489 | && !aout_link_free_symbols (oldbfd)) | |
3490 | return FALSE; | |
3491 | if (!aout_get_external_symbols (abfd)) | |
3492 | return FALSE; | |
3493 | } | |
3494 | if (!aout_link_add_symbols (abfd, info)) | |
116c20d2 NC |
3495 | return FALSE; |
3496 | } | |
3497 | ||
0e144ba7 | 3498 | if (!info->keep_memory || !needed) |
116c20d2 | 3499 | { |
0e144ba7 | 3500 | if (!aout_link_free_symbols (abfd)) |
116c20d2 NC |
3501 | return FALSE; |
3502 | } | |
3503 | ||
3504 | return TRUE; | |
3505 | } | |
3506 | ||
3507 | /* Given an a.out BFD, add symbols to the global hash table as | |
3508 | appropriate. */ | |
3509 | ||
3510 | bfd_boolean | |
3511 | NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info) | |
3512 | { | |
3513 | switch (bfd_get_format (abfd)) | |
3514 | { | |
3515 | case bfd_object: | |
3516 | return aout_link_add_object_symbols (abfd, info); | |
3517 | case bfd_archive: | |
3518 | return _bfd_generic_link_add_archive_symbols | |
3519 | (abfd, info, aout_link_check_archive_element); | |
3520 | default: | |
3521 | bfd_set_error (bfd_error_wrong_format); | |
3522 | return FALSE; | |
3523 | } | |
3524 | } | |
3525 | \f | |
3526 | /* A hash table used for header files with N_BINCL entries. */ | |
3527 | ||
3528 | struct aout_link_includes_table | |
3529 | { | |
3530 | struct bfd_hash_table root; | |
3531 | }; | |
3532 | ||
3533 | /* A linked list of totals that we have found for a particular header | |
3534 | file. */ | |
3535 | ||
3536 | struct aout_link_includes_totals | |
3537 | { | |
3538 | struct aout_link_includes_totals *next; | |
3539 | bfd_vma total; | |
3540 | }; | |
3541 | ||
3542 | /* An entry in the header file hash table. */ | |
3543 | ||
3544 | struct aout_link_includes_entry | |
3545 | { | |
3546 | struct bfd_hash_entry root; | |
3547 | /* List of totals we have found for this file. */ | |
3548 | struct aout_link_includes_totals *totals; | |
3549 | }; | |
3550 | ||
3551 | /* Look up an entry in an the header file hash table. */ | |
3552 | ||
3553 | #define aout_link_includes_lookup(table, string, create, copy) \ | |
3554 | ((struct aout_link_includes_entry *) \ | |
3555 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
3556 | ||
3557 | /* During the final link step we need to pass around a bunch of | |
3558 | information, so we do it in an instance of this structure. */ | |
3559 | ||
3560 | struct aout_final_link_info | |
3561 | { | |
3562 | /* General link information. */ | |
3563 | struct bfd_link_info *info; | |
3564 | /* Output bfd. */ | |
252b5132 RH |
3565 | bfd *output_bfd; |
3566 | /* Reloc file positions. */ | |
3567 | file_ptr treloff, dreloff; | |
3568 | /* File position of symbols. */ | |
3569 | file_ptr symoff; | |
3570 | /* String table. */ | |
3571 | struct bfd_strtab_hash *strtab; | |
3572 | /* Header file hash table. */ | |
3573 | struct aout_link_includes_table includes; | |
3574 | /* A buffer large enough to hold the contents of any section. */ | |
3575 | bfd_byte *contents; | |
3576 | /* A buffer large enough to hold the relocs of any section. */ | |
116c20d2 | 3577 | void * relocs; |
252b5132 RH |
3578 | /* A buffer large enough to hold the symbol map of any input BFD. */ |
3579 | int *symbol_map; | |
3580 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
3581 | struct external_nlist *output_syms; | |
3582 | }; | |
3583 | ||
252b5132 RH |
3584 | /* The function to create a new entry in the header file hash table. */ |
3585 | ||
3586 | static struct bfd_hash_entry * | |
116c20d2 NC |
3587 | aout_link_includes_newfunc (struct bfd_hash_entry *entry, |
3588 | struct bfd_hash_table *table, | |
3589 | const char *string) | |
252b5132 RH |
3590 | { |
3591 | struct aout_link_includes_entry *ret = | |
3592 | (struct aout_link_includes_entry *) entry; | |
3593 | ||
3594 | /* Allocate the structure if it has not already been allocated by a | |
3595 | subclass. */ | |
116c20d2 | 3596 | if (ret == NULL) |
a50b1753 NC |
3597 | ret = (struct aout_link_includes_entry *) |
3598 | bfd_hash_allocate (table, sizeof (* ret)); | |
116c20d2 NC |
3599 | if (ret == NULL) |
3600 | return NULL; | |
252b5132 RH |
3601 | |
3602 | /* Call the allocation method of the superclass. */ | |
3603 | ret = ((struct aout_link_includes_entry *) | |
3604 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
3605 | if (ret) | |
3606 | { | |
3607 | /* Set local fields. */ | |
3608 | ret->totals = NULL; | |
3609 | } | |
3610 | ||
3611 | return (struct bfd_hash_entry *) ret; | |
3612 | } | |
3613 | ||
116c20d2 NC |
3614 | /* Write out a symbol that was not associated with an a.out input |
3615 | object. */ | |
252b5132 | 3616 | |
116c20d2 | 3617 | static bfd_boolean |
7686d77d | 3618 | aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data) |
252b5132 | 3619 | { |
7686d77d | 3620 | struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh; |
57402f1e | 3621 | struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data; |
116c20d2 NC |
3622 | bfd *output_bfd; |
3623 | int type; | |
3624 | bfd_vma val; | |
3625 | struct external_nlist outsym; | |
3626 | bfd_size_type indx; | |
3627 | bfd_size_type amt; | |
252b5132 | 3628 | |
116c20d2 NC |
3629 | if (h->root.type == bfd_link_hash_warning) |
3630 | { | |
3631 | h = (struct aout_link_hash_entry *) h->root.u.i.link; | |
3632 | if (h->root.type == bfd_link_hash_new) | |
3633 | return TRUE; | |
3634 | } | |
252b5132 | 3635 | |
57402f1e | 3636 | output_bfd = flaginfo->output_bfd; |
252b5132 | 3637 | |
116c20d2 | 3638 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) |
252b5132 | 3639 | { |
116c20d2 | 3640 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) |
57402f1e | 3641 | (output_bfd, flaginfo->info, h))) |
252b5132 | 3642 | { |
116c20d2 NC |
3643 | /* FIXME: No way to handle errors. */ |
3644 | abort (); | |
252b5132 | 3645 | } |
116c20d2 | 3646 | } |
252b5132 | 3647 | |
116c20d2 NC |
3648 | if (h->written) |
3649 | return TRUE; | |
252b5132 | 3650 | |
116c20d2 | 3651 | h->written = TRUE; |
252b5132 | 3652 | |
116c20d2 NC |
3653 | /* An indx of -2 means the symbol must be written. */ |
3654 | if (h->indx != -2 | |
57402f1e NC |
3655 | && (flaginfo->info->strip == strip_all |
3656 | || (flaginfo->info->strip == strip_some | |
3657 | && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string, | |
116c20d2 NC |
3658 | FALSE, FALSE) == NULL))) |
3659 | return TRUE; | |
252b5132 | 3660 | |
116c20d2 | 3661 | switch (h->root.type) |
252b5132 | 3662 | { |
116c20d2 NC |
3663 | default: |
3664 | case bfd_link_hash_warning: | |
3665 | abort (); | |
3666 | /* Avoid variable not initialized warnings. */ | |
3667 | return TRUE; | |
3668 | case bfd_link_hash_new: | |
3669 | /* This can happen for set symbols when sets are not being | |
3670 | built. */ | |
3671 | return TRUE; | |
3672 | case bfd_link_hash_undefined: | |
3673 | type = N_UNDF | N_EXT; | |
3674 | val = 0; | |
3675 | break; | |
3676 | case bfd_link_hash_defined: | |
3677 | case bfd_link_hash_defweak: | |
3678 | { | |
3679 | asection *sec; | |
252b5132 | 3680 | |
116c20d2 NC |
3681 | sec = h->root.u.def.section->output_section; |
3682 | BFD_ASSERT (bfd_is_abs_section (sec) | |
3683 | || sec->owner == output_bfd); | |
3684 | if (sec == obj_textsec (output_bfd)) | |
3685 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; | |
3686 | else if (sec == obj_datasec (output_bfd)) | |
3687 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; | |
3688 | else if (sec == obj_bsssec (output_bfd)) | |
3689 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; | |
3690 | else | |
3691 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; | |
3692 | type |= N_EXT; | |
3693 | val = (h->root.u.def.value | |
3694 | + sec->vma | |
3695 | + h->root.u.def.section->output_offset); | |
3696 | } | |
3697 | break; | |
3698 | case bfd_link_hash_common: | |
3699 | type = N_UNDF | N_EXT; | |
3700 | val = h->root.u.c.size; | |
3701 | break; | |
3702 | case bfd_link_hash_undefweak: | |
3703 | type = N_WEAKU; | |
3704 | val = 0; | |
c38eb2a6 | 3705 | break; |
116c20d2 NC |
3706 | case bfd_link_hash_indirect: |
3707 | /* We ignore these symbols, since the indirected symbol is | |
3708 | already in the hash table. */ | |
3709 | return TRUE; | |
3710 | } | |
252b5132 | 3711 | |
116c20d2 NC |
3712 | H_PUT_8 (output_bfd, type, outsym.e_type); |
3713 | H_PUT_8 (output_bfd, 0, outsym.e_other); | |
3714 | H_PUT_16 (output_bfd, 0, outsym.e_desc); | |
57402f1e | 3715 | indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string, |
116c20d2 NC |
3716 | FALSE); |
3717 | if (indx == - (bfd_size_type) 1) | |
3718 | /* FIXME: No way to handle errors. */ | |
3719 | abort (); | |
252b5132 | 3720 | |
116c20d2 NC |
3721 | PUT_WORD (output_bfd, indx, outsym.e_strx); |
3722 | PUT_WORD (output_bfd, val, outsym.e_value); | |
252b5132 | 3723 | |
116c20d2 | 3724 | amt = EXTERNAL_NLIST_SIZE; |
57402f1e | 3725 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0 |
116c20d2 NC |
3726 | || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt) |
3727 | /* FIXME: No way to handle errors. */ | |
3728 | abort (); | |
252b5132 | 3729 | |
57402f1e | 3730 | flaginfo->symoff += EXTERNAL_NLIST_SIZE; |
116c20d2 NC |
3731 | h->indx = obj_aout_external_sym_count (output_bfd); |
3732 | ++obj_aout_external_sym_count (output_bfd); | |
252b5132 | 3733 | |
116c20d2 NC |
3734 | return TRUE; |
3735 | } | |
252b5132 | 3736 | |
116c20d2 | 3737 | /* Handle a link order which is supposed to generate a reloc. */ |
252b5132 | 3738 | |
116c20d2 | 3739 | static bfd_boolean |
57402f1e | 3740 | aout_link_reloc_link_order (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3741 | asection *o, |
3742 | struct bfd_link_order *p) | |
3743 | { | |
3744 | struct bfd_link_order_reloc *pr; | |
3745 | int r_index; | |
3746 | int r_extern; | |
3747 | reloc_howto_type *howto; | |
3748 | file_ptr *reloff_ptr = NULL; | |
3749 | struct reloc_std_external srel; | |
3750 | struct reloc_ext_external erel; | |
3751 | void * rel_ptr; | |
3752 | bfd_size_type amt; | |
252b5132 | 3753 | |
116c20d2 | 3754 | pr = p->u.reloc.p; |
252b5132 | 3755 | |
116c20d2 NC |
3756 | if (p->type == bfd_section_reloc_link_order) |
3757 | { | |
3758 | r_extern = 0; | |
3759 | if (bfd_is_abs_section (pr->u.section)) | |
3760 | r_index = N_ABS | N_EXT; | |
3761 | else | |
3762 | { | |
57402f1e | 3763 | BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd); |
116c20d2 NC |
3764 | r_index = pr->u.section->target_index; |
3765 | } | |
3766 | } | |
3767 | else | |
3768 | { | |
3769 | struct aout_link_hash_entry *h; | |
252b5132 | 3770 | |
116c20d2 NC |
3771 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); |
3772 | r_extern = 1; | |
3773 | h = ((struct aout_link_hash_entry *) | |
57402f1e | 3774 | bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info, |
116c20d2 NC |
3775 | pr->u.name, FALSE, FALSE, TRUE)); |
3776 | if (h != NULL | |
3777 | && h->indx >= 0) | |
3778 | r_index = h->indx; | |
3779 | else if (h != NULL) | |
3780 | { | |
3781 | /* We decided to strip this symbol, but it turns out that we | |
3782 | can't. Note that we lose the other and desc information | |
3783 | here. I don't think that will ever matter for a global | |
3784 | symbol. */ | |
3785 | h->indx = -2; | |
3786 | h->written = FALSE; | |
57402f1e | 3787 | if (!aout_link_write_other_symbol (&h->root.root, flaginfo)) |
116c20d2 NC |
3788 | return FALSE; |
3789 | r_index = h->indx; | |
3790 | } | |
3791 | else | |
3792 | { | |
1a72702b AM |
3793 | (*flaginfo->info->callbacks->unattached_reloc) |
3794 | (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0); | |
116c20d2 NC |
3795 | r_index = 0; |
3796 | } | |
3797 | } | |
252b5132 | 3798 | |
57402f1e | 3799 | howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc); |
116c20d2 | 3800 | if (howto == 0) |
252b5132 | 3801 | { |
116c20d2 NC |
3802 | bfd_set_error (bfd_error_bad_value); |
3803 | return FALSE; | |
252b5132 RH |
3804 | } |
3805 | ||
57402f1e NC |
3806 | if (o == obj_textsec (flaginfo->output_bfd)) |
3807 | reloff_ptr = &flaginfo->treloff; | |
3808 | else if (o == obj_datasec (flaginfo->output_bfd)) | |
3809 | reloff_ptr = &flaginfo->dreloff; | |
116c20d2 NC |
3810 | else |
3811 | abort (); | |
3812 | ||
57402f1e | 3813 | if (obj_reloc_entry_size (flaginfo->output_bfd) == RELOC_STD_SIZE) |
252b5132 | 3814 | { |
116c20d2 | 3815 | #ifdef MY_put_reloc |
57402f1e | 3816 | MY_put_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, howto, |
116c20d2 NC |
3817 | &srel); |
3818 | #else | |
3819 | { | |
3820 | int r_pcrel; | |
3821 | int r_baserel; | |
3822 | int r_jmptable; | |
3823 | int r_relative; | |
3824 | int r_length; | |
252b5132 | 3825 | |
116c20d2 NC |
3826 | r_pcrel = (int) howto->pc_relative; |
3827 | r_baserel = (howto->type & 8) != 0; | |
3828 | r_jmptable = (howto->type & 16) != 0; | |
3829 | r_relative = (howto->type & 32) != 0; | |
3830 | r_length = howto->size; | |
252b5132 | 3831 | |
57402f1e NC |
3832 | PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address); |
3833 | if (bfd_header_big_endian (flaginfo->output_bfd)) | |
116c20d2 NC |
3834 | { |
3835 | srel.r_index[0] = r_index >> 16; | |
3836 | srel.r_index[1] = r_index >> 8; | |
3837 | srel.r_index[2] = r_index; | |
3838 | srel.r_type[0] = | |
3839 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
3840 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
3841 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
3842 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
3843 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
3844 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
3845 | } | |
3846 | else | |
3847 | { | |
3848 | srel.r_index[2] = r_index >> 16; | |
3849 | srel.r_index[1] = r_index >> 8; | |
3850 | srel.r_index[0] = r_index; | |
3851 | srel.r_type[0] = | |
3852 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
3853 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
3854 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
3855 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
3856 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
3857 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
3858 | } | |
3859 | } | |
3860 | #endif | |
3861 | rel_ptr = (void *) &srel; | |
252b5132 | 3862 | |
116c20d2 NC |
3863 | /* We have to write the addend into the object file, since |
3864 | standard a.out relocs are in place. It would be more | |
3865 | reliable if we had the current contents of the file here, | |
3866 | rather than assuming zeroes, but we can't read the file since | |
3867 | it was opened using bfd_openw. */ | |
3868 | if (pr->addend != 0) | |
252b5132 | 3869 | { |
116c20d2 NC |
3870 | bfd_size_type size; |
3871 | bfd_reloc_status_type r; | |
3872 | bfd_byte *buf; | |
3873 | bfd_boolean ok; | |
3874 | ||
3875 | size = bfd_get_reloc_size (howto); | |
a50b1753 | 3876 | buf = (bfd_byte *) bfd_zmalloc (size); |
6346d5ca | 3877 | if (buf == NULL && size != 0) |
116c20d2 | 3878 | return FALSE; |
57402f1e | 3879 | r = MY_relocate_contents (howto, flaginfo->output_bfd, |
116c20d2 NC |
3880 | (bfd_vma) pr->addend, buf); |
3881 | switch (r) | |
252b5132 | 3882 | { |
116c20d2 NC |
3883 | case bfd_reloc_ok: |
3884 | break; | |
3885 | default: | |
3886 | case bfd_reloc_outofrange: | |
3887 | abort (); | |
3888 | case bfd_reloc_overflow: | |
1a72702b AM |
3889 | (*flaginfo->info->callbacks->reloc_overflow) |
3890 | (flaginfo->info, NULL, | |
3891 | (p->type == bfd_section_reloc_link_order | |
3892 | ? bfd_section_name (flaginfo->output_bfd, | |
3893 | pr->u.section) | |
3894 | : pr->u.name), | |
3895 | howto->name, pr->addend, NULL, NULL, (bfd_vma) 0); | |
116c20d2 | 3896 | break; |
252b5132 | 3897 | } |
57402f1e | 3898 | ok = bfd_set_section_contents (flaginfo->output_bfd, o, (void *) buf, |
116c20d2 NC |
3899 | (file_ptr) p->offset, size); |
3900 | free (buf); | |
3901 | if (! ok) | |
3902 | return FALSE; | |
252b5132 RH |
3903 | } |
3904 | } | |
116c20d2 | 3905 | else |
252b5132 | 3906 | { |
116c20d2 | 3907 | #ifdef MY_put_ext_reloc |
57402f1e | 3908 | MY_put_ext_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, |
116c20d2 NC |
3909 | howto, &erel, pr->addend); |
3910 | #else | |
57402f1e | 3911 | PUT_WORD (flaginfo->output_bfd, p->offset, erel.r_address); |
252b5132 | 3912 | |
57402f1e | 3913 | if (bfd_header_big_endian (flaginfo->output_bfd)) |
116c20d2 NC |
3914 | { |
3915 | erel.r_index[0] = r_index >> 16; | |
3916 | erel.r_index[1] = r_index >> 8; | |
3917 | erel.r_index[2] = r_index; | |
3918 | erel.r_type[0] = | |
3919 | ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
3920 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
3921 | } | |
3922 | else | |
3923 | { | |
3924 | erel.r_index[2] = r_index >> 16; | |
3925 | erel.r_index[1] = r_index >> 8; | |
3926 | erel.r_index[0] = r_index; | |
3927 | erel.r_type[0] = | |
3928 | (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
3929 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
3930 | } | |
252b5132 | 3931 | |
57402f1e | 3932 | PUT_WORD (flaginfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend); |
116c20d2 | 3933 | #endif /* MY_put_ext_reloc */ |
252b5132 | 3934 | |
116c20d2 | 3935 | rel_ptr = (void *) &erel; |
252b5132 | 3936 | } |
252b5132 | 3937 | |
57402f1e NC |
3938 | amt = obj_reloc_entry_size (flaginfo->output_bfd); |
3939 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 | |
3940 | || bfd_bwrite (rel_ptr, amt, flaginfo->output_bfd) != amt) | |
116c20d2 | 3941 | return FALSE; |
252b5132 | 3942 | |
57402f1e | 3943 | *reloff_ptr += obj_reloc_entry_size (flaginfo->output_bfd); |
252b5132 | 3944 | |
116c20d2 NC |
3945 | /* Assert that the relocs have not run into the symbols, and that n |
3946 | the text relocs have not run into the data relocs. */ | |
57402f1e NC |
3947 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
3948 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 3949 | || (*reloff_ptr |
57402f1e | 3950 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
116c20d2 NC |
3951 | |
3952 | return TRUE; | |
252b5132 RH |
3953 | } |
3954 | ||
116c20d2 | 3955 | /* Get the section corresponding to a reloc index. */ |
252b5132 | 3956 | |
116c20d2 NC |
3957 | static INLINE asection * |
3958 | aout_reloc_index_to_section (bfd *abfd, int indx) | |
252b5132 | 3959 | { |
116c20d2 | 3960 | switch (indx & N_TYPE) |
252b5132 | 3961 | { |
116c20d2 NC |
3962 | case N_TEXT: return obj_textsec (abfd); |
3963 | case N_DATA: return obj_datasec (abfd); | |
3964 | case N_BSS: return obj_bsssec (abfd); | |
3965 | case N_ABS: | |
3966 | case N_UNDF: return bfd_abs_section_ptr; | |
3967 | default: abort (); | |
252b5132 | 3968 | } |
116c20d2 | 3969 | return NULL; |
252b5132 RH |
3970 | } |
3971 | ||
116c20d2 | 3972 | /* Relocate an a.out section using standard a.out relocs. */ |
252b5132 | 3973 | |
b34976b6 | 3974 | static bfd_boolean |
57402f1e | 3975 | aout_link_input_section_std (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3976 | bfd *input_bfd, |
3977 | asection *input_section, | |
3978 | struct reloc_std_external *relocs, | |
3979 | bfd_size_type rel_size, | |
3980 | bfd_byte *contents) | |
252b5132 | 3981 | { |
116c20d2 NC |
3982 | bfd_boolean (*check_dynamic_reloc) |
3983 | (struct bfd_link_info *, bfd *, asection *, | |
3984 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
3985 | bfd_vma *); | |
252b5132 | 3986 | bfd *output_bfd; |
116c20d2 NC |
3987 | bfd_boolean relocatable; |
3988 | struct external_nlist *syms; | |
252b5132 | 3989 | char *strings; |
116c20d2 | 3990 | struct aout_link_hash_entry **sym_hashes; |
252b5132 | 3991 | int *symbol_map; |
116c20d2 NC |
3992 | bfd_size_type reloc_count; |
3993 | struct reloc_std_external *rel; | |
3994 | struct reloc_std_external *rel_end; | |
252b5132 | 3995 | |
57402f1e | 3996 | output_bfd = flaginfo->output_bfd; |
116c20d2 | 3997 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
252b5132 | 3998 | |
116c20d2 NC |
3999 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE); |
4000 | BFD_ASSERT (input_bfd->xvec->header_byteorder | |
4001 | == output_bfd->xvec->header_byteorder); | |
252b5132 | 4002 | |
0e1862bb | 4003 | relocatable = bfd_link_relocatable (flaginfo->info); |
116c20d2 NC |
4004 | syms = obj_aout_external_syms (input_bfd); |
4005 | strings = obj_aout_external_strings (input_bfd); | |
4006 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4007 | symbol_map = flaginfo->symbol_map; |
116c20d2 NC |
4008 | |
4009 | reloc_count = rel_size / RELOC_STD_SIZE; | |
4010 | rel = relocs; | |
4011 | rel_end = rel + reloc_count; | |
4012 | for (; rel < rel_end; rel++) | |
252b5132 | 4013 | { |
116c20d2 NC |
4014 | bfd_vma r_addr; |
4015 | int r_index; | |
4016 | int r_extern; | |
4017 | int r_pcrel; | |
4018 | int r_baserel = 0; | |
4019 | reloc_howto_type *howto; | |
4020 | struct aout_link_hash_entry *h = NULL; | |
4021 | bfd_vma relocation; | |
4022 | bfd_reloc_status_type r; | |
252b5132 | 4023 | |
116c20d2 | 4024 | r_addr = GET_SWORD (input_bfd, rel->r_address); |
252b5132 | 4025 | |
116c20d2 NC |
4026 | #ifdef MY_reloc_howto |
4027 | howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel); | |
4028 | #else | |
4029 | { | |
4030 | int r_jmptable; | |
4031 | int r_relative; | |
4032 | int r_length; | |
4033 | unsigned int howto_idx; | |
252b5132 | 4034 | |
116c20d2 NC |
4035 | if (bfd_header_big_endian (input_bfd)) |
4036 | { | |
4037 | r_index = (((unsigned int) rel->r_index[0] << 16) | |
4038 | | ((unsigned int) rel->r_index[1] << 8) | |
4039 | | rel->r_index[2]); | |
4040 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
4041 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
4042 | r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
4043 | r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
4044 | r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
4045 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
4046 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
4047 | } | |
4048 | else | |
4049 | { | |
4050 | r_index = (((unsigned int) rel->r_index[2] << 16) | |
4051 | | ((unsigned int) rel->r_index[1] << 8) | |
4052 | | rel->r_index[0]); | |
4053 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
4054 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
4055 | r_baserel = (0 != (rel->r_type[0] | |
4056 | & RELOC_STD_BITS_BASEREL_LITTLE)); | |
4057 | r_jmptable= (0 != (rel->r_type[0] | |
4058 | & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
4059 | r_relative= (0 != (rel->r_type[0] | |
4060 | & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
4061 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
4062 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
4063 | } | |
252b5132 | 4064 | |
116c20d2 NC |
4065 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel |
4066 | + 16 * r_jmptable + 32 * r_relative); | |
ad756e3f AM |
4067 | if (howto_idx < TABLE_SIZE (howto_table_std)) |
4068 | howto = howto_table_std + howto_idx; | |
4069 | else | |
4070 | howto = NULL; | |
116c20d2 NC |
4071 | } |
4072 | #endif | |
252b5132 | 4073 | |
ad756e3f AM |
4074 | if (howto == NULL) |
4075 | { | |
57402f1e | 4076 | (*flaginfo->info->callbacks->einfo) |
ad756e3f AM |
4077 | (_("%P: %B: unexpected relocation type\n"), input_bfd); |
4078 | bfd_set_error (bfd_error_bad_value); | |
4079 | return FALSE; | |
4080 | } | |
4081 | ||
116c20d2 | 4082 | if (relocatable) |
252b5132 | 4083 | { |
116c20d2 NC |
4084 | /* We are generating a relocatable output file, and must |
4085 | modify the reloc accordingly. */ | |
4086 | if (r_extern) | |
252b5132 | 4087 | { |
116c20d2 NC |
4088 | /* If we know the symbol this relocation is against, |
4089 | convert it into a relocation against a section. This | |
4090 | is what the native linker does. */ | |
4091 | h = sym_hashes[r_index]; | |
4092 | if (h != NULL | |
4093 | && (h->root.type == bfd_link_hash_defined | |
4094 | || h->root.type == bfd_link_hash_defweak)) | |
252b5132 | 4095 | { |
252b5132 RH |
4096 | asection *output_section; |
4097 | ||
116c20d2 NC |
4098 | /* Change the r_extern value. */ |
4099 | if (bfd_header_big_endian (output_bfd)) | |
4100 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG; | |
4101 | else | |
4102 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE; | |
252b5132 | 4103 | |
116c20d2 NC |
4104 | /* Compute a new r_index. */ |
4105 | output_section = h->root.u.def.section->output_section; | |
252b5132 | 4106 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 | 4107 | r_index = N_TEXT; |
252b5132 | 4108 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 | 4109 | r_index = N_DATA; |
252b5132 | 4110 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 | 4111 | r_index = N_BSS; |
252b5132 | 4112 | else |
116c20d2 | 4113 | r_index = N_ABS; |
252b5132 | 4114 | |
116c20d2 NC |
4115 | /* Add the symbol value and the section VMA to the |
4116 | addend stored in the contents. */ | |
4117 | relocation = (h->root.u.def.value | |
4118 | + output_section->vma | |
4119 | + h->root.u.def.section->output_offset); | |
252b5132 | 4120 | } |
116c20d2 | 4121 | else |
252b5132 | 4122 | { |
116c20d2 NC |
4123 | /* We must change r_index according to the symbol |
4124 | map. */ | |
4125 | r_index = symbol_map[r_index]; | |
252b5132 | 4126 | |
116c20d2 | 4127 | if (r_index == -1) |
252b5132 | 4128 | { |
116c20d2 | 4129 | if (h != NULL) |
252b5132 | 4130 | { |
116c20d2 NC |
4131 | /* We decided to strip this symbol, but it |
4132 | turns out that we can't. Note that we | |
4133 | lose the other and desc information here. | |
4134 | I don't think that will ever matter for a | |
4135 | global symbol. */ | |
4136 | if (h->indx < 0) | |
252b5132 | 4137 | { |
116c20d2 NC |
4138 | h->indx = -2; |
4139 | h->written = FALSE; | |
7686d77d | 4140 | if (!aout_link_write_other_symbol (&h->root.root, |
57402f1e | 4141 | flaginfo)) |
116c20d2 | 4142 | return FALSE; |
252b5132 | 4143 | } |
116c20d2 NC |
4144 | r_index = h->indx; |
4145 | } | |
4146 | else | |
4147 | { | |
4148 | const char *name; | |
4149 | ||
4150 | name = strings + GET_WORD (input_bfd, | |
4151 | syms[r_index].e_strx); | |
1a72702b AM |
4152 | (*flaginfo->info->callbacks->unattached_reloc) |
4153 | (flaginfo->info, name, | |
4154 | input_bfd, input_section, r_addr); | |
116c20d2 | 4155 | r_index = 0; |
252b5132 RH |
4156 | } |
4157 | } | |
116c20d2 NC |
4158 | |
4159 | relocation = 0; | |
252b5132 RH |
4160 | } |
4161 | ||
116c20d2 NC |
4162 | /* Write out the new r_index value. */ |
4163 | if (bfd_header_big_endian (output_bfd)) | |
252b5132 | 4164 | { |
116c20d2 NC |
4165 | rel->r_index[0] = r_index >> 16; |
4166 | rel->r_index[1] = r_index >> 8; | |
4167 | rel->r_index[2] = r_index; | |
252b5132 RH |
4168 | } |
4169 | else | |
4170 | { | |
116c20d2 NC |
4171 | rel->r_index[2] = r_index >> 16; |
4172 | rel->r_index[1] = r_index >> 8; | |
4173 | rel->r_index[0] = r_index; | |
252b5132 RH |
4174 | } |
4175 | } | |
252b5132 | 4176 | else |
116c20d2 NC |
4177 | { |
4178 | asection *section; | |
252b5132 | 4179 | |
116c20d2 NC |
4180 | /* This is a relocation against a section. We must |
4181 | adjust by the amount that the section moved. */ | |
4182 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4183 | relocation = (section->output_section->vma | |
4184 | + section->output_offset | |
4185 | - section->vma); | |
4186 | } | |
252b5132 | 4187 | |
116c20d2 NC |
4188 | /* Change the address of the relocation. */ |
4189 | PUT_WORD (output_bfd, | |
4190 | r_addr + input_section->output_offset, | |
4191 | rel->r_address); | |
252b5132 | 4192 | |
116c20d2 NC |
4193 | /* Adjust a PC relative relocation by removing the reference |
4194 | to the original address in the section and including the | |
4195 | reference to the new address. */ | |
4196 | if (r_pcrel) | |
4197 | relocation -= (input_section->output_section->vma | |
4198 | + input_section->output_offset | |
4199 | - input_section->vma); | |
e92d460e | 4200 | |
116c20d2 NC |
4201 | #ifdef MY_relocatable_reloc |
4202 | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); | |
4203 | #endif | |
252b5132 | 4204 | |
116c20d2 NC |
4205 | if (relocation == 0) |
4206 | r = bfd_reloc_ok; | |
4207 | else | |
4208 | r = MY_relocate_contents (howto, | |
4209 | input_bfd, relocation, | |
4210 | contents + r_addr); | |
252b5132 | 4211 | } |
116c20d2 NC |
4212 | else |
4213 | { | |
4214 | bfd_boolean hundef; | |
252b5132 | 4215 | |
116c20d2 NC |
4216 | /* We are generating an executable, and must do a full |
4217 | relocation. */ | |
4218 | hundef = FALSE; | |
252b5132 | 4219 | |
116c20d2 NC |
4220 | if (r_extern) |
4221 | { | |
4222 | h = sym_hashes[r_index]; | |
252b5132 | 4223 | |
116c20d2 NC |
4224 | if (h != NULL |
4225 | && (h->root.type == bfd_link_hash_defined | |
4226 | || h->root.type == bfd_link_hash_defweak)) | |
4227 | { | |
4228 | relocation = (h->root.u.def.value | |
4229 | + h->root.u.def.section->output_section->vma | |
4230 | + h->root.u.def.section->output_offset); | |
4231 | } | |
4232 | else if (h != NULL | |
4233 | && h->root.type == bfd_link_hash_undefweak) | |
4234 | relocation = 0; | |
4235 | else | |
4236 | { | |
4237 | hundef = TRUE; | |
4238 | relocation = 0; | |
4239 | } | |
4240 | } | |
4241 | else | |
4242 | { | |
4243 | asection *section; | |
252b5132 | 4244 | |
116c20d2 NC |
4245 | section = aout_reloc_index_to_section (input_bfd, r_index); |
4246 | relocation = (section->output_section->vma | |
4247 | + section->output_offset | |
4248 | - section->vma); | |
4249 | if (r_pcrel) | |
4250 | relocation += input_section->vma; | |
4251 | } | |
252b5132 | 4252 | |
116c20d2 NC |
4253 | if (check_dynamic_reloc != NULL) |
4254 | { | |
4255 | bfd_boolean skip; | |
252b5132 | 4256 | |
116c20d2 | 4257 | if (! ((*check_dynamic_reloc) |
57402f1e | 4258 | (flaginfo->info, input_bfd, input_section, h, |
116c20d2 NC |
4259 | (void *) rel, contents, &skip, &relocation))) |
4260 | return FALSE; | |
4261 | if (skip) | |
4262 | continue; | |
4263 | } | |
252b5132 | 4264 | |
116c20d2 NC |
4265 | /* Now warn if a global symbol is undefined. We could not |
4266 | do this earlier, because check_dynamic_reloc might want | |
4267 | to skip this reloc. */ | |
0e1862bb | 4268 | if (hundef && ! bfd_link_pic (flaginfo->info) && ! r_baserel) |
116c20d2 NC |
4269 | { |
4270 | const char *name; | |
252b5132 | 4271 | |
116c20d2 NC |
4272 | if (h != NULL) |
4273 | name = h->root.root.string; | |
4274 | else | |
4275 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
1a72702b AM |
4276 | (*flaginfo->info->callbacks->undefined_symbol) |
4277 | (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE); | |
116c20d2 | 4278 | } |
252b5132 | 4279 | |
116c20d2 NC |
4280 | r = MY_final_link_relocate (howto, |
4281 | input_bfd, input_section, | |
4282 | contents, r_addr, relocation, | |
4283 | (bfd_vma) 0); | |
252b5132 | 4284 | } |
252b5132 | 4285 | |
116c20d2 NC |
4286 | if (r != bfd_reloc_ok) |
4287 | { | |
4288 | switch (r) | |
4289 | { | |
4290 | default: | |
4291 | case bfd_reloc_outofrange: | |
4292 | abort (); | |
4293 | case bfd_reloc_overflow: | |
4294 | { | |
4295 | const char *name; | |
252b5132 | 4296 | |
116c20d2 NC |
4297 | if (h != NULL) |
4298 | name = NULL; | |
4299 | else if (r_extern) | |
4300 | name = strings + GET_WORD (input_bfd, | |
4301 | syms[r_index].e_strx); | |
4302 | else | |
4303 | { | |
4304 | asection *s; | |
252b5132 | 4305 | |
116c20d2 NC |
4306 | s = aout_reloc_index_to_section (input_bfd, r_index); |
4307 | name = bfd_section_name (input_bfd, s); | |
4308 | } | |
1a72702b AM |
4309 | (*flaginfo->info->callbacks->reloc_overflow) |
4310 | (flaginfo->info, (h ? &h->root : NULL), name, howto->name, | |
4311 | (bfd_vma) 0, input_bfd, input_section, r_addr); | |
116c20d2 NC |
4312 | } |
4313 | break; | |
4314 | } | |
4315 | } | |
252b5132 RH |
4316 | } |
4317 | ||
b34976b6 | 4318 | return TRUE; |
252b5132 RH |
4319 | } |
4320 | ||
116c20d2 | 4321 | /* Relocate an a.out section using extended a.out relocs. */ |
252b5132 | 4322 | |
b34976b6 | 4323 | static bfd_boolean |
57402f1e | 4324 | aout_link_input_section_ext (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
4325 | bfd *input_bfd, |
4326 | asection *input_section, | |
4327 | struct reloc_ext_external *relocs, | |
4328 | bfd_size_type rel_size, | |
4329 | bfd_byte *contents) | |
252b5132 | 4330 | { |
b34976b6 | 4331 | bfd_boolean (*check_dynamic_reloc) |
116c20d2 NC |
4332 | (struct bfd_link_info *, bfd *, asection *, |
4333 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
4334 | bfd_vma *); | |
252b5132 | 4335 | bfd *output_bfd; |
1049f94e | 4336 | bfd_boolean relocatable; |
252b5132 RH |
4337 | struct external_nlist *syms; |
4338 | char *strings; | |
4339 | struct aout_link_hash_entry **sym_hashes; | |
4340 | int *symbol_map; | |
4341 | bfd_size_type reloc_count; | |
116c20d2 NC |
4342 | struct reloc_ext_external *rel; |
4343 | struct reloc_ext_external *rel_end; | |
252b5132 | 4344 | |
57402f1e | 4345 | output_bfd = flaginfo->output_bfd; |
252b5132 RH |
4346 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
4347 | ||
116c20d2 | 4348 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE); |
252b5132 RH |
4349 | BFD_ASSERT (input_bfd->xvec->header_byteorder |
4350 | == output_bfd->xvec->header_byteorder); | |
4351 | ||
0e1862bb | 4352 | relocatable = bfd_link_relocatable (flaginfo->info); |
252b5132 RH |
4353 | syms = obj_aout_external_syms (input_bfd); |
4354 | strings = obj_aout_external_strings (input_bfd); | |
4355 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4356 | symbol_map = flaginfo->symbol_map; |
252b5132 | 4357 | |
116c20d2 | 4358 | reloc_count = rel_size / RELOC_EXT_SIZE; |
252b5132 RH |
4359 | rel = relocs; |
4360 | rel_end = rel + reloc_count; | |
4361 | for (; rel < rel_end; rel++) | |
4362 | { | |
4363 | bfd_vma r_addr; | |
4364 | int r_index; | |
4365 | int r_extern; | |
116c20d2 NC |
4366 | unsigned int r_type; |
4367 | bfd_vma r_addend; | |
252b5132 | 4368 | struct aout_link_hash_entry *h = NULL; |
116c20d2 | 4369 | asection *r_section = NULL; |
252b5132 | 4370 | bfd_vma relocation; |
252b5132 RH |
4371 | |
4372 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
4373 | ||
116c20d2 NC |
4374 | if (bfd_header_big_endian (input_bfd)) |
4375 | { | |
4376 | r_index = (((unsigned int) rel->r_index[0] << 16) | |
4377 | | ((unsigned int) rel->r_index[1] << 8) | |
4378 | | rel->r_index[2]); | |
4379 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
4380 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
4381 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
4382 | } | |
4383 | else | |
4384 | { | |
4385 | r_index = (((unsigned int) rel->r_index[2] << 16) | |
4386 | | ((unsigned int) rel->r_index[1] << 8) | |
4387 | | rel->r_index[0]); | |
4388 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
4389 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
4390 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
4391 | } | |
252b5132 | 4392 | |
116c20d2 | 4393 | r_addend = GET_SWORD (input_bfd, rel->r_addend); |
252b5132 | 4394 | |
ad756e3f AM |
4395 | if (r_type >= TABLE_SIZE (howto_table_ext)) |
4396 | { | |
57402f1e | 4397 | (*flaginfo->info->callbacks->einfo) |
ad756e3f AM |
4398 | (_("%P: %B: unexpected relocation type\n"), input_bfd); |
4399 | bfd_set_error (bfd_error_bad_value); | |
4400 | return FALSE; | |
4401 | } | |
252b5132 | 4402 | |
1049f94e | 4403 | if (relocatable) |
252b5132 | 4404 | { |
1049f94e | 4405 | /* We are generating a relocatable output file, and must |
252b5132 | 4406 | modify the reloc accordingly. */ |
116c20d2 NC |
4407 | if (r_extern |
4408 | || r_type == (unsigned int) RELOC_BASE10 | |
4409 | || r_type == (unsigned int) RELOC_BASE13 | |
4410 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
4411 | { |
4412 | /* If we know the symbol this relocation is against, | |
4413 | convert it into a relocation against a section. This | |
4414 | is what the native linker does. */ | |
116c20d2 NC |
4415 | if (r_type == (unsigned int) RELOC_BASE10 |
4416 | || r_type == (unsigned int) RELOC_BASE13 | |
4417 | || r_type == (unsigned int) RELOC_BASE22) | |
4418 | h = NULL; | |
4419 | else | |
4420 | h = sym_hashes[r_index]; | |
4421 | if (h != NULL | |
252b5132 RH |
4422 | && (h->root.type == bfd_link_hash_defined |
4423 | || h->root.type == bfd_link_hash_defweak)) | |
4424 | { | |
4425 | asection *output_section; | |
4426 | ||
4427 | /* Change the r_extern value. */ | |
4428 | if (bfd_header_big_endian (output_bfd)) | |
116c20d2 | 4429 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG; |
252b5132 | 4430 | else |
116c20d2 | 4431 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE; |
252b5132 RH |
4432 | |
4433 | /* Compute a new r_index. */ | |
4434 | output_section = h->root.u.def.section->output_section; | |
4435 | if (output_section == obj_textsec (output_bfd)) | |
4436 | r_index = N_TEXT; | |
4437 | else if (output_section == obj_datasec (output_bfd)) | |
4438 | r_index = N_DATA; | |
4439 | else if (output_section == obj_bsssec (output_bfd)) | |
4440 | r_index = N_BSS; | |
4441 | else | |
4442 | r_index = N_ABS; | |
4443 | ||
4444 | /* Add the symbol value and the section VMA to the | |
116c20d2 | 4445 | addend. */ |
252b5132 RH |
4446 | relocation = (h->root.u.def.value |
4447 | + output_section->vma | |
4448 | + h->root.u.def.section->output_offset); | |
116c20d2 NC |
4449 | |
4450 | /* Now RELOCATION is the VMA of the final | |
4451 | destination. If this is a PC relative reloc, | |
4452 | then ADDEND is the negative of the source VMA. | |
4453 | We want to set ADDEND to the difference between | |
4454 | the destination VMA and the source VMA, which | |
4455 | means we must adjust RELOCATION by the change in | |
4456 | the source VMA. This is done below. */ | |
252b5132 RH |
4457 | } |
4458 | else | |
4459 | { | |
4460 | /* We must change r_index according to the symbol | |
4461 | map. */ | |
4462 | r_index = symbol_map[r_index]; | |
4463 | ||
4464 | if (r_index == -1) | |
4465 | { | |
4466 | if (h != NULL) | |
4467 | { | |
4468 | /* We decided to strip this symbol, but it | |
4469 | turns out that we can't. Note that we | |
4470 | lose the other and desc information here. | |
4471 | I don't think that will ever matter for a | |
4472 | global symbol. */ | |
4473 | if (h->indx < 0) | |
4474 | { | |
4475 | h->indx = -2; | |
b34976b6 | 4476 | h->written = FALSE; |
7686d77d | 4477 | if (!aout_link_write_other_symbol (&h->root.root, |
57402f1e | 4478 | flaginfo)) |
b34976b6 | 4479 | return FALSE; |
252b5132 RH |
4480 | } |
4481 | r_index = h->indx; | |
4482 | } | |
4483 | else | |
4484 | { | |
4485 | const char *name; | |
4486 | ||
4487 | name = strings + GET_WORD (input_bfd, | |
4488 | syms[r_index].e_strx); | |
1a72702b AM |
4489 | (*flaginfo->info->callbacks->unattached_reloc) |
4490 | (flaginfo->info, name, | |
4491 | input_bfd, input_section, r_addr); | |
252b5132 RH |
4492 | r_index = 0; |
4493 | } | |
4494 | } | |
4495 | ||
4496 | relocation = 0; | |
116c20d2 NC |
4497 | |
4498 | /* If this is a PC relative reloc, then the addend | |
4499 | is the negative of the source VMA. We must | |
4500 | adjust it by the change in the source VMA. This | |
4501 | is done below. */ | |
252b5132 RH |
4502 | } |
4503 | ||
4504 | /* Write out the new r_index value. */ | |
4505 | if (bfd_header_big_endian (output_bfd)) | |
4506 | { | |
4507 | rel->r_index[0] = r_index >> 16; | |
4508 | rel->r_index[1] = r_index >> 8; | |
4509 | rel->r_index[2] = r_index; | |
4510 | } | |
4511 | else | |
4512 | { | |
4513 | rel->r_index[2] = r_index >> 16; | |
4514 | rel->r_index[1] = r_index >> 8; | |
4515 | rel->r_index[0] = r_index; | |
4516 | } | |
4517 | } | |
4518 | else | |
4519 | { | |
252b5132 RH |
4520 | /* This is a relocation against a section. We must |
4521 | adjust by the amount that the section moved. */ | |
116c20d2 NC |
4522 | r_section = aout_reloc_index_to_section (input_bfd, r_index); |
4523 | relocation = (r_section->output_section->vma | |
4524 | + r_section->output_offset | |
4525 | - r_section->vma); | |
252b5132 | 4526 | |
116c20d2 NC |
4527 | /* If this is a PC relative reloc, then the addend is |
4528 | the difference in VMA between the destination and the | |
4529 | source. We have just adjusted for the change in VMA | |
4530 | of the destination, so we must also adjust by the | |
4531 | change in VMA of the source. This is done below. */ | |
4532 | } | |
252b5132 | 4533 | |
116c20d2 NC |
4534 | /* As described above, we must always adjust a PC relative |
4535 | reloc by the change in VMA of the source. However, if | |
4536 | pcrel_offset is set, then the addend does not include the | |
4537 | location within the section, in which case we don't need | |
4538 | to adjust anything. */ | |
4539 | if (howto_table_ext[r_type].pc_relative | |
4540 | && ! howto_table_ext[r_type].pcrel_offset) | |
252b5132 RH |
4541 | relocation -= (input_section->output_section->vma |
4542 | + input_section->output_offset | |
4543 | - input_section->vma); | |
4544 | ||
116c20d2 NC |
4545 | /* Change the addend if necessary. */ |
4546 | if (relocation != 0) | |
4547 | PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend); | |
252b5132 | 4548 | |
116c20d2 NC |
4549 | /* Change the address of the relocation. */ |
4550 | PUT_WORD (output_bfd, | |
4551 | r_addr + input_section->output_offset, | |
4552 | rel->r_address); | |
252b5132 RH |
4553 | } |
4554 | else | |
4555 | { | |
b34976b6 | 4556 | bfd_boolean hundef; |
116c20d2 | 4557 | bfd_reloc_status_type r; |
252b5132 RH |
4558 | |
4559 | /* We are generating an executable, and must do a full | |
4560 | relocation. */ | |
b34976b6 | 4561 | hundef = FALSE; |
252b5132 RH |
4562 | |
4563 | if (r_extern) | |
4564 | { | |
4565 | h = sym_hashes[r_index]; | |
4566 | ||
116c20d2 | 4567 | if (h != NULL |
252b5132 RH |
4568 | && (h->root.type == bfd_link_hash_defined |
4569 | || h->root.type == bfd_link_hash_defweak)) | |
4570 | { | |
4571 | relocation = (h->root.u.def.value | |
4572 | + h->root.u.def.section->output_section->vma | |
4573 | + h->root.u.def.section->output_offset); | |
4574 | } | |
116c20d2 | 4575 | else if (h != NULL |
252b5132 RH |
4576 | && h->root.type == bfd_link_hash_undefweak) |
4577 | relocation = 0; | |
4578 | else | |
4579 | { | |
b34976b6 | 4580 | hundef = TRUE; |
252b5132 RH |
4581 | relocation = 0; |
4582 | } | |
4583 | } | |
116c20d2 NC |
4584 | else if (r_type == (unsigned int) RELOC_BASE10 |
4585 | || r_type == (unsigned int) RELOC_BASE13 | |
4586 | || r_type == (unsigned int) RELOC_BASE22) | |
4587 | { | |
4588 | struct external_nlist *sym; | |
4589 | int type; | |
4590 | ||
4591 | /* For base relative relocs, r_index is always an index | |
4592 | into the symbol table, even if r_extern is 0. */ | |
4593 | sym = syms + r_index; | |
4594 | type = H_GET_8 (input_bfd, sym->e_type); | |
4595 | if ((type & N_TYPE) == N_TEXT | |
4596 | || type == N_WEAKT) | |
4597 | r_section = obj_textsec (input_bfd); | |
4598 | else if ((type & N_TYPE) == N_DATA | |
4599 | || type == N_WEAKD) | |
4600 | r_section = obj_datasec (input_bfd); | |
4601 | else if ((type & N_TYPE) == N_BSS | |
4602 | || type == N_WEAKB) | |
4603 | r_section = obj_bsssec (input_bfd); | |
4604 | else if ((type & N_TYPE) == N_ABS | |
4605 | || type == N_WEAKA) | |
4606 | r_section = bfd_abs_section_ptr; | |
4607 | else | |
4608 | abort (); | |
4609 | relocation = (r_section->output_section->vma | |
4610 | + r_section->output_offset | |
4611 | + (GET_WORD (input_bfd, sym->e_value) | |
4612 | - r_section->vma)); | |
4613 | } | |
252b5132 RH |
4614 | else |
4615 | { | |
116c20d2 | 4616 | r_section = aout_reloc_index_to_section (input_bfd, r_index); |
252b5132 | 4617 | |
116c20d2 NC |
4618 | /* If this is a PC relative reloc, then R_ADDEND is the |
4619 | difference between the two vmas, or | |
4620 | old_dest_sec + old_dest_off - (old_src_sec + old_src_off) | |
4621 | where | |
4622 | old_dest_sec == section->vma | |
4623 | and | |
4624 | old_src_sec == input_section->vma | |
4625 | and | |
4626 | old_src_off == r_addr | |
4627 | ||
4628 | _bfd_final_link_relocate expects RELOCATION + | |
4629 | R_ADDEND to be the VMA of the destination minus | |
4630 | r_addr (the minus r_addr is because this relocation | |
4631 | is not pcrel_offset, which is a bit confusing and | |
4632 | should, perhaps, be changed), or | |
4633 | new_dest_sec | |
4634 | where | |
4635 | new_dest_sec == output_section->vma + output_offset | |
4636 | We arrange for this to happen by setting RELOCATION to | |
4637 | new_dest_sec + old_src_sec - old_dest_sec | |
4638 | ||
4639 | If this is not a PC relative reloc, then R_ADDEND is | |
4640 | simply the VMA of the destination, so we set | |
4641 | RELOCATION to the change in the destination VMA, or | |
4642 | new_dest_sec - old_dest_sec | |
4643 | */ | |
4644 | relocation = (r_section->output_section->vma | |
4645 | + r_section->output_offset | |
4646 | - r_section->vma); | |
4647 | if (howto_table_ext[r_type].pc_relative) | |
252b5132 RH |
4648 | relocation += input_section->vma; |
4649 | } | |
4650 | ||
4651 | if (check_dynamic_reloc != NULL) | |
4652 | { | |
b34976b6 | 4653 | bfd_boolean skip; |
252b5132 RH |
4654 | |
4655 | if (! ((*check_dynamic_reloc) | |
57402f1e | 4656 | (flaginfo->info, input_bfd, input_section, h, |
116c20d2 | 4657 | (void *) rel, contents, &skip, &relocation))) |
b34976b6 | 4658 | return FALSE; |
252b5132 RH |
4659 | if (skip) |
4660 | continue; | |
4661 | } | |
4662 | ||
4663 | /* Now warn if a global symbol is undefined. We could not | |
4664 | do this earlier, because check_dynamic_reloc might want | |
4665 | to skip this reloc. */ | |
116c20d2 | 4666 | if (hundef |
0e1862bb | 4667 | && ! bfd_link_pic (flaginfo->info) |
116c20d2 NC |
4668 | && r_type != (unsigned int) RELOC_BASE10 |
4669 | && r_type != (unsigned int) RELOC_BASE13 | |
4670 | && r_type != (unsigned int) RELOC_BASE22) | |
252b5132 RH |
4671 | { |
4672 | const char *name; | |
4673 | ||
4674 | if (h != NULL) | |
4675 | name = h->root.root.string; | |
4676 | else | |
4677 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
1a72702b AM |
4678 | (*flaginfo->info->callbacks->undefined_symbol) |
4679 | (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE); | |
252b5132 RH |
4680 | } |
4681 | ||
116c20d2 NC |
4682 | if (r_type != (unsigned int) RELOC_SPARC_REV32) |
4683 | r = MY_final_link_relocate (howto_table_ext + r_type, | |
4684 | input_bfd, input_section, | |
4685 | contents, r_addr, relocation, | |
4686 | r_addend); | |
4687 | else | |
252b5132 | 4688 | { |
116c20d2 | 4689 | bfd_vma x; |
252b5132 | 4690 | |
116c20d2 NC |
4691 | x = bfd_get_32 (input_bfd, contents + r_addr); |
4692 | x = x + relocation + r_addend; | |
4693 | bfd_putl32 (/*input_bfd,*/ x, contents + r_addr); | |
4694 | r = bfd_reloc_ok; | |
4695 | } | |
4696 | ||
4697 | if (r != bfd_reloc_ok) | |
4698 | { | |
4699 | switch (r) | |
4700 | { | |
4701 | default: | |
4702 | case bfd_reloc_outofrange: | |
4703 | abort (); | |
4704 | case bfd_reloc_overflow: | |
252b5132 | 4705 | { |
116c20d2 | 4706 | const char *name; |
252b5132 | 4707 | |
116c20d2 NC |
4708 | if (h != NULL) |
4709 | name = NULL; | |
4710 | else if (r_extern | |
4711 | || r_type == (unsigned int) RELOC_BASE10 | |
4712 | || r_type == (unsigned int) RELOC_BASE13 | |
4713 | || r_type == (unsigned int) RELOC_BASE22) | |
4714 | name = strings + GET_WORD (input_bfd, | |
4715 | syms[r_index].e_strx); | |
4716 | else | |
4717 | { | |
4718 | asection *s; | |
4719 | ||
4720 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
4721 | name = bfd_section_name (input_bfd, s); | |
4722 | } | |
1a72702b AM |
4723 | (*flaginfo->info->callbacks->reloc_overflow) |
4724 | (flaginfo->info, (h ? &h->root : NULL), name, | |
4725 | howto_table_ext[r_type].name, | |
4726 | r_addend, input_bfd, input_section, r_addr); | |
252b5132 | 4727 | } |
116c20d2 NC |
4728 | break; |
4729 | } | |
252b5132 RH |
4730 | } |
4731 | } | |
4732 | } | |
4733 | ||
b34976b6 | 4734 | return TRUE; |
252b5132 RH |
4735 | } |
4736 | ||
116c20d2 NC |
4737 | /* Link an a.out section into the output file. */ |
4738 | ||
4739 | static bfd_boolean | |
57402f1e | 4740 | aout_link_input_section (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
4741 | bfd *input_bfd, |
4742 | asection *input_section, | |
4743 | file_ptr *reloff_ptr, | |
4744 | bfd_size_type rel_size) | |
4745 | { | |
4746 | bfd_size_type input_size; | |
4747 | void * relocs; | |
4748 | ||
4749 | /* Get the section contents. */ | |
4750 | input_size = input_section->size; | |
4751 | if (! bfd_get_section_contents (input_bfd, input_section, | |
57402f1e | 4752 | (void *) flaginfo->contents, |
116c20d2 NC |
4753 | (file_ptr) 0, input_size)) |
4754 | return FALSE; | |
4755 | ||
4756 | /* Read in the relocs if we haven't already done it. */ | |
4757 | if (aout_section_data (input_section) != NULL | |
4758 | && aout_section_data (input_section)->relocs != NULL) | |
4759 | relocs = aout_section_data (input_section)->relocs; | |
4760 | else | |
4761 | { | |
57402f1e | 4762 | relocs = flaginfo->relocs; |
116c20d2 NC |
4763 | if (rel_size > 0) |
4764 | { | |
4765 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
4766 | || bfd_bread (relocs, rel_size, input_bfd) != rel_size) | |
4767 | return FALSE; | |
4768 | } | |
4769 | } | |
4770 | ||
4771 | /* Relocate the section contents. */ | |
4772 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) | |
4773 | { | |
57402f1e | 4774 | if (! aout_link_input_section_std (flaginfo, input_bfd, input_section, |
116c20d2 | 4775 | (struct reloc_std_external *) relocs, |
57402f1e | 4776 | rel_size, flaginfo->contents)) |
116c20d2 NC |
4777 | return FALSE; |
4778 | } | |
4779 | else | |
4780 | { | |
57402f1e | 4781 | if (! aout_link_input_section_ext (flaginfo, input_bfd, input_section, |
116c20d2 | 4782 | (struct reloc_ext_external *) relocs, |
57402f1e | 4783 | rel_size, flaginfo->contents)) |
116c20d2 NC |
4784 | return FALSE; |
4785 | } | |
4786 | ||
4787 | /* Write out the section contents. */ | |
57402f1e | 4788 | if (! bfd_set_section_contents (flaginfo->output_bfd, |
116c20d2 | 4789 | input_section->output_section, |
57402f1e | 4790 | (void *) flaginfo->contents, |
116c20d2 NC |
4791 | (file_ptr) input_section->output_offset, |
4792 | input_size)) | |
4793 | return FALSE; | |
4794 | ||
4795 | /* If we are producing relocatable output, the relocs were | |
4796 | modified, and we now write them out. */ | |
0e1862bb | 4797 | if (bfd_link_relocatable (flaginfo->info) && rel_size > 0) |
116c20d2 | 4798 | { |
57402f1e | 4799 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) |
116c20d2 | 4800 | return FALSE; |
57402f1e | 4801 | if (bfd_bwrite (relocs, rel_size, flaginfo->output_bfd) != rel_size) |
116c20d2 NC |
4802 | return FALSE; |
4803 | *reloff_ptr += rel_size; | |
4804 | ||
4805 | /* Assert that the relocs have not run into the symbols, and | |
4806 | that if these are the text relocs they have not run into the | |
4807 | data relocs. */ | |
57402f1e NC |
4808 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
4809 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 4810 | || (*reloff_ptr |
57402f1e | 4811 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
116c20d2 NC |
4812 | } |
4813 | ||
4814 | return TRUE; | |
4815 | } | |
4816 | ||
4817 | /* Adjust and write out the symbols for an a.out file. Set the new | |
4818 | symbol indices into a symbol_map. */ | |
252b5132 | 4819 | |
b34976b6 | 4820 | static bfd_boolean |
57402f1e | 4821 | aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
252b5132 | 4822 | { |
252b5132 | 4823 | bfd *output_bfd; |
116c20d2 | 4824 | bfd_size_type sym_count; |
252b5132 | 4825 | char *strings; |
116c20d2 NC |
4826 | enum bfd_link_strip strip; |
4827 | enum bfd_link_discard discard; | |
4828 | struct external_nlist *outsym; | |
4829 | bfd_size_type strtab_index; | |
4830 | struct external_nlist *sym; | |
4831 | struct external_nlist *sym_end; | |
4832 | struct aout_link_hash_entry **sym_hash; | |
252b5132 | 4833 | int *symbol_map; |
116c20d2 NC |
4834 | bfd_boolean pass; |
4835 | bfd_boolean skip_next; | |
252b5132 | 4836 | |
57402f1e | 4837 | output_bfd = flaginfo->output_bfd; |
116c20d2 NC |
4838 | sym_count = obj_aout_external_sym_count (input_bfd); |
4839 | strings = obj_aout_external_strings (input_bfd); | |
57402f1e NC |
4840 | strip = flaginfo->info->strip; |
4841 | discard = flaginfo->info->discard; | |
4842 | outsym = flaginfo->output_syms; | |
252b5132 | 4843 | |
116c20d2 NC |
4844 | /* First write out a symbol for this object file, unless we are |
4845 | discarding such symbols. */ | |
4846 | if (strip != strip_all | |
4847 | && (strip != strip_some | |
57402f1e | 4848 | || bfd_hash_lookup (flaginfo->info->keep_hash, input_bfd->filename, |
116c20d2 NC |
4849 | FALSE, FALSE) != NULL) |
4850 | && discard != discard_all) | |
4851 | { | |
4852 | H_PUT_8 (output_bfd, N_TEXT, outsym->e_type); | |
4853 | H_PUT_8 (output_bfd, 0, outsym->e_other); | |
4854 | H_PUT_16 (output_bfd, 0, outsym->e_desc); | |
57402f1e | 4855 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
116c20d2 NC |
4856 | input_bfd->filename, FALSE); |
4857 | if (strtab_index == (bfd_size_type) -1) | |
4858 | return FALSE; | |
4859 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
4860 | PUT_WORD (output_bfd, | |
4861 | (bfd_get_section_vma (output_bfd, | |
4862 | obj_textsec (input_bfd)->output_section) | |
4863 | + obj_textsec (input_bfd)->output_offset), | |
4864 | outsym->e_value); | |
4865 | ++obj_aout_external_sym_count (output_bfd); | |
4866 | ++outsym; | |
4867 | } | |
252b5132 | 4868 | |
116c20d2 NC |
4869 | pass = FALSE; |
4870 | skip_next = FALSE; | |
4871 | sym = obj_aout_external_syms (input_bfd); | |
4872 | sym_end = sym + sym_count; | |
4873 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4874 | symbol_map = flaginfo->symbol_map; |
116c20d2 NC |
4875 | memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map); |
4876 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) | |
252b5132 | 4877 | { |
116c20d2 NC |
4878 | const char *name; |
4879 | int type; | |
4880 | struct aout_link_hash_entry *h; | |
4881 | bfd_boolean skip; | |
4882 | asection *symsec; | |
4883 | bfd_vma val = 0; | |
4884 | bfd_boolean copy; | |
252b5132 | 4885 | |
116c20d2 NC |
4886 | /* We set *symbol_map to 0 above for all symbols. If it has |
4887 | already been set to -1 for this symbol, it means that we are | |
4888 | discarding it because it appears in a duplicate header file. | |
4889 | See the N_BINCL code below. */ | |
4890 | if (*symbol_map == -1) | |
4891 | continue; | |
252b5132 | 4892 | |
116c20d2 NC |
4893 | /* Initialize *symbol_map to -1, which means that the symbol was |
4894 | not copied into the output file. We will change it later if | |
4895 | we do copy the symbol over. */ | |
4896 | *symbol_map = -1; | |
4897 | ||
4898 | type = H_GET_8 (input_bfd, sym->e_type); | |
4899 | name = strings + GET_WORD (input_bfd, sym->e_strx); | |
4900 | ||
4901 | h = NULL; | |
4902 | ||
4903 | if (pass) | |
252b5132 | 4904 | { |
116c20d2 NC |
4905 | /* Pass this symbol through. It is the target of an |
4906 | indirect or warning symbol. */ | |
4907 | val = GET_WORD (input_bfd, sym->e_value); | |
4908 | pass = FALSE; | |
252b5132 | 4909 | } |
116c20d2 | 4910 | else if (skip_next) |
252b5132 | 4911 | { |
116c20d2 NC |
4912 | /* Skip this symbol, which is the target of an indirect |
4913 | symbol that we have changed to no longer be an indirect | |
4914 | symbol. */ | |
4915 | skip_next = FALSE; | |
4916 | continue; | |
252b5132 | 4917 | } |
116c20d2 NC |
4918 | else |
4919 | { | |
4920 | struct aout_link_hash_entry *hresolve; | |
252b5132 | 4921 | |
116c20d2 NC |
4922 | /* We have saved the hash table entry for this symbol, if |
4923 | there is one. Note that we could just look it up again | |
4924 | in the hash table, provided we first check that it is an | |
4925 | external symbol. */ | |
4926 | h = *sym_hash; | |
252b5132 | 4927 | |
116c20d2 NC |
4928 | /* Use the name from the hash table, in case the symbol was |
4929 | wrapped. */ | |
4930 | if (h != NULL | |
4931 | && h->root.type != bfd_link_hash_warning) | |
4932 | name = h->root.root.string; | |
252b5132 | 4933 | |
116c20d2 NC |
4934 | /* If this is an indirect or warning symbol, then change |
4935 | hresolve to the base symbol. We also change *sym_hash so | |
4936 | that the relocation routines relocate against the real | |
4937 | symbol. */ | |
4938 | hresolve = h; | |
4939 | if (h != (struct aout_link_hash_entry *) NULL | |
4940 | && (h->root.type == bfd_link_hash_indirect | |
4941 | || h->root.type == bfd_link_hash_warning)) | |
252b5132 | 4942 | { |
116c20d2 NC |
4943 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; |
4944 | while (hresolve->root.type == bfd_link_hash_indirect | |
4945 | || hresolve->root.type == bfd_link_hash_warning) | |
4946 | hresolve = ((struct aout_link_hash_entry *) | |
4947 | hresolve->root.u.i.link); | |
4948 | *sym_hash = hresolve; | |
4949 | } | |
4950 | ||
4951 | /* If the symbol has already been written out, skip it. */ | |
4952 | if (h != NULL | |
4953 | && h->written) | |
4954 | { | |
4955 | if ((type & N_TYPE) == N_INDR | |
4956 | || type == N_WARNING) | |
4957 | skip_next = TRUE; | |
4958 | *symbol_map = h->indx; | |
4959 | continue; | |
4960 | } | |
4961 | ||
4962 | /* See if we are stripping this symbol. */ | |
4963 | skip = FALSE; | |
4964 | switch (strip) | |
4965 | { | |
4966 | case strip_none: | |
4967 | break; | |
4968 | case strip_debugger: | |
4969 | if ((type & N_STAB) != 0) | |
4970 | skip = TRUE; | |
4971 | break; | |
4972 | case strip_some: | |
57402f1e | 4973 | if (bfd_hash_lookup (flaginfo->info->keep_hash, name, FALSE, FALSE) |
116c20d2 NC |
4974 | == NULL) |
4975 | skip = TRUE; | |
4976 | break; | |
4977 | case strip_all: | |
4978 | skip = TRUE; | |
4979 | break; | |
4980 | } | |
4981 | if (skip) | |
4982 | { | |
4983 | if (h != NULL) | |
4984 | h->written = TRUE; | |
4985 | continue; | |
4986 | } | |
4987 | ||
4988 | /* Get the value of the symbol. */ | |
4989 | if ((type & N_TYPE) == N_TEXT | |
4990 | || type == N_WEAKT) | |
4991 | symsec = obj_textsec (input_bfd); | |
4992 | else if ((type & N_TYPE) == N_DATA | |
4993 | || type == N_WEAKD) | |
4994 | symsec = obj_datasec (input_bfd); | |
4995 | else if ((type & N_TYPE) == N_BSS | |
4996 | || type == N_WEAKB) | |
4997 | symsec = obj_bsssec (input_bfd); | |
4998 | else if ((type & N_TYPE) == N_ABS | |
4999 | || type == N_WEAKA) | |
5000 | symsec = bfd_abs_section_ptr; | |
5001 | else if (((type & N_TYPE) == N_INDR | |
5002 | && (hresolve == NULL | |
5003 | || (hresolve->root.type != bfd_link_hash_defined | |
5004 | && hresolve->root.type != bfd_link_hash_defweak | |
5005 | && hresolve->root.type != bfd_link_hash_common))) | |
5006 | || type == N_WARNING) | |
5007 | { | |
5008 | /* Pass the next symbol through unchanged. The | |
5009 | condition above for indirect symbols is so that if | |
5010 | the indirect symbol was defined, we output it with | |
5011 | the correct definition so the debugger will | |
5012 | understand it. */ | |
5013 | pass = TRUE; | |
5014 | val = GET_WORD (input_bfd, sym->e_value); | |
5015 | symsec = NULL; | |
5016 | } | |
5017 | else if ((type & N_STAB) != 0) | |
5018 | { | |
5019 | val = GET_WORD (input_bfd, sym->e_value); | |
5020 | symsec = NULL; | |
5021 | } | |
5022 | else | |
5023 | { | |
5024 | /* If we get here with an indirect symbol, it means that | |
5025 | we are outputting it with a real definition. In such | |
5026 | a case we do not want to output the next symbol, | |
5027 | which is the target of the indirection. */ | |
5028 | if ((type & N_TYPE) == N_INDR) | |
5029 | skip_next = TRUE; | |
5030 | ||
5031 | symsec = NULL; | |
5032 | ||
5033 | /* We need to get the value from the hash table. We use | |
5034 | hresolve so that if we have defined an indirect | |
5035 | symbol we output the final definition. */ | |
5036 | if (h == NULL) | |
5037 | { | |
5038 | switch (type & N_TYPE) | |
5039 | { | |
5040 | case N_SETT: | |
5041 | symsec = obj_textsec (input_bfd); | |
5042 | break; | |
5043 | case N_SETD: | |
5044 | symsec = obj_datasec (input_bfd); | |
5045 | break; | |
5046 | case N_SETB: | |
5047 | symsec = obj_bsssec (input_bfd); | |
5048 | break; | |
5049 | case N_SETA: | |
5050 | symsec = bfd_abs_section_ptr; | |
5051 | break; | |
5052 | default: | |
5053 | val = 0; | |
5054 | break; | |
5055 | } | |
5056 | } | |
5057 | else if (hresolve->root.type == bfd_link_hash_defined | |
5058 | || hresolve->root.type == bfd_link_hash_defweak) | |
252b5132 | 5059 | { |
116c20d2 | 5060 | asection *input_section; |
252b5132 RH |
5061 | asection *output_section; |
5062 | ||
116c20d2 NC |
5063 | /* This case usually means a common symbol which was |
5064 | turned into a defined symbol. */ | |
5065 | input_section = hresolve->root.u.def.section; | |
5066 | output_section = input_section->output_section; | |
5067 | BFD_ASSERT (bfd_is_abs_section (output_section) | |
5068 | || output_section->owner == output_bfd); | |
5069 | val = (hresolve->root.u.def.value | |
5070 | + bfd_get_section_vma (output_bfd, output_section) | |
5071 | + input_section->output_offset); | |
5072 | ||
5073 | /* Get the correct type based on the section. If | |
5074 | this is a constructed set, force it to be | |
5075 | globally visible. */ | |
5076 | if (type == N_SETT | |
5077 | || type == N_SETD | |
5078 | || type == N_SETB | |
5079 | || type == N_SETA) | |
5080 | type |= N_EXT; | |
5081 | ||
5082 | type &=~ N_TYPE; | |
252b5132 | 5083 | |
252b5132 | 5084 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 NC |
5085 | type |= (hresolve->root.type == bfd_link_hash_defined |
5086 | ? N_TEXT | |
5087 | : N_WEAKT); | |
252b5132 | 5088 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 NC |
5089 | type |= (hresolve->root.type == bfd_link_hash_defined |
5090 | ? N_DATA | |
5091 | : N_WEAKD); | |
252b5132 | 5092 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 NC |
5093 | type |= (hresolve->root.type == bfd_link_hash_defined |
5094 | ? N_BSS | |
5095 | : N_WEAKB); | |
252b5132 | 5096 | else |
116c20d2 NC |
5097 | type |= (hresolve->root.type == bfd_link_hash_defined |
5098 | ? N_ABS | |
5099 | : N_WEAKA); | |
5100 | } | |
5101 | else if (hresolve->root.type == bfd_link_hash_common) | |
5102 | val = hresolve->root.u.c.size; | |
5103 | else if (hresolve->root.type == bfd_link_hash_undefweak) | |
5104 | { | |
5105 | val = 0; | |
5106 | type = N_WEAKU; | |
252b5132 RH |
5107 | } |
5108 | else | |
116c20d2 NC |
5109 | val = 0; |
5110 | } | |
5111 | if (symsec != NULL) | |
5112 | val = (symsec->output_section->vma | |
5113 | + symsec->output_offset | |
5114 | + (GET_WORD (input_bfd, sym->e_value) | |
5115 | - symsec->vma)); | |
5116 | ||
5117 | /* If this is a global symbol set the written flag, and if | |
5118 | it is a local symbol see if we should discard it. */ | |
5119 | if (h != NULL) | |
5120 | { | |
5121 | h->written = TRUE; | |
5122 | h->indx = obj_aout_external_sym_count (output_bfd); | |
5123 | } | |
5124 | else if ((type & N_TYPE) != N_SETT | |
5125 | && (type & N_TYPE) != N_SETD | |
5126 | && (type & N_TYPE) != N_SETB | |
5127 | && (type & N_TYPE) != N_SETA) | |
5128 | { | |
5129 | switch (discard) | |
252b5132 | 5130 | { |
116c20d2 NC |
5131 | case discard_none: |
5132 | case discard_sec_merge: | |
5133 | break; | |
5134 | case discard_l: | |
5135 | if ((type & N_STAB) == 0 | |
5136 | && bfd_is_local_label_name (input_bfd, name)) | |
5137 | skip = TRUE; | |
5138 | break; | |
5139 | case discard_all: | |
5140 | skip = TRUE; | |
5141 | break; | |
5142 | } | |
5143 | if (skip) | |
5144 | { | |
5145 | pass = FALSE; | |
5146 | continue; | |
5147 | } | |
5148 | } | |
252b5132 | 5149 | |
116c20d2 NC |
5150 | /* An N_BINCL symbol indicates the start of the stabs |
5151 | entries for a header file. We need to scan ahead to the | |
5152 | next N_EINCL symbol, ignoring nesting, adding up all the | |
5153 | characters in the symbol names, not including the file | |
5154 | numbers in types (the first number after an open | |
5155 | parenthesis). */ | |
5156 | if (type == (int) N_BINCL) | |
5157 | { | |
5158 | struct external_nlist *incl_sym; | |
5159 | int nest; | |
5160 | struct aout_link_includes_entry *incl_entry; | |
5161 | struct aout_link_includes_totals *t; | |
5162 | ||
5163 | val = 0; | |
5164 | nest = 0; | |
5165 | for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) | |
5166 | { | |
5167 | int incl_type; | |
5168 | ||
5169 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); | |
5170 | if (incl_type == (int) N_EINCL) | |
252b5132 | 5171 | { |
116c20d2 NC |
5172 | if (nest == 0) |
5173 | break; | |
5174 | --nest; | |
5175 | } | |
5176 | else if (incl_type == (int) N_BINCL) | |
5177 | ++nest; | |
5178 | else if (nest == 0) | |
5179 | { | |
5180 | const char *s; | |
5181 | ||
5182 | s = strings + GET_WORD (input_bfd, incl_sym->e_strx); | |
5183 | for (; *s != '\0'; s++) | |
252b5132 | 5184 | { |
116c20d2 NC |
5185 | val += *s; |
5186 | if (*s == '(') | |
252b5132 | 5187 | { |
116c20d2 NC |
5188 | /* Skip the file number. */ |
5189 | ++s; | |
5190 | while (ISDIGIT (*s)) | |
5191 | ++s; | |
5192 | --s; | |
252b5132 | 5193 | } |
252b5132 | 5194 | } |
116c20d2 NC |
5195 | } |
5196 | } | |
252b5132 | 5197 | |
116c20d2 NC |
5198 | /* If we have already included a header file with the |
5199 | same value, then replace this one with an N_EXCL | |
5200 | symbol. */ | |
57402f1e NC |
5201 | copy = (bfd_boolean) (! flaginfo->info->keep_memory); |
5202 | incl_entry = aout_link_includes_lookup (&flaginfo->includes, | |
116c20d2 NC |
5203 | name, TRUE, copy); |
5204 | if (incl_entry == NULL) | |
5205 | return FALSE; | |
5206 | for (t = incl_entry->totals; t != NULL; t = t->next) | |
5207 | if (t->total == val) | |
5208 | break; | |
5209 | if (t == NULL) | |
5210 | { | |
5211 | /* This is the first time we have seen this header | |
5212 | file with this set of stabs strings. */ | |
a50b1753 | 5213 | t = (struct aout_link_includes_totals *) |
57402f1e | 5214 | bfd_hash_allocate (&flaginfo->includes.root, |
116c20d2 NC |
5215 | sizeof *t); |
5216 | if (t == NULL) | |
5217 | return FALSE; | |
5218 | t->total = val; | |
5219 | t->next = incl_entry->totals; | |
5220 | incl_entry->totals = t; | |
5221 | } | |
5222 | else | |
5223 | { | |
5224 | int *incl_map; | |
5225 | ||
5226 | /* This is a duplicate header file. We must change | |
5227 | it to be an N_EXCL entry, and mark all the | |
5228 | included symbols to prevent outputting them. */ | |
5229 | type = (int) N_EXCL; | |
5230 | ||
5231 | nest = 0; | |
5232 | for (incl_sym = sym + 1, incl_map = symbol_map + 1; | |
5233 | incl_sym < sym_end; | |
5234 | incl_sym++, incl_map++) | |
5235 | { | |
5236 | int incl_type; | |
5237 | ||
5238 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); | |
5239 | if (incl_type == (int) N_EINCL) | |
5240 | { | |
5241 | if (nest == 0) | |
5242 | { | |
5243 | *incl_map = -1; | |
5244 | break; | |
5245 | } | |
5246 | --nest; | |
252b5132 | 5247 | } |
116c20d2 NC |
5248 | else if (incl_type == (int) N_BINCL) |
5249 | ++nest; | |
5250 | else if (nest == 0) | |
5251 | *incl_map = -1; | |
252b5132 | 5252 | } |
252b5132 RH |
5253 | } |
5254 | } | |
116c20d2 NC |
5255 | } |
5256 | ||
5257 | /* Copy this symbol into the list of symbols we are going to | |
5258 | write out. */ | |
5259 | H_PUT_8 (output_bfd, type, outsym->e_type); | |
5260 | H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other); | |
5261 | H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc); | |
5262 | copy = FALSE; | |
57402f1e | 5263 | if (! flaginfo->info->keep_memory) |
116c20d2 NC |
5264 | { |
5265 | /* name points into a string table which we are going to | |
5266 | free. If there is a hash table entry, use that string. | |
5267 | Otherwise, copy name into memory. */ | |
5268 | if (h != NULL) | |
5269 | name = h->root.root.string; | |
252b5132 | 5270 | else |
116c20d2 NC |
5271 | copy = TRUE; |
5272 | } | |
57402f1e | 5273 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
116c20d2 NC |
5274 | name, copy); |
5275 | if (strtab_index == (bfd_size_type) -1) | |
5276 | return FALSE; | |
5277 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
5278 | PUT_WORD (output_bfd, val, outsym->e_value); | |
5279 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
5280 | ++obj_aout_external_sym_count (output_bfd); | |
5281 | ++outsym; | |
5282 | } | |
252b5132 | 5283 | |
116c20d2 | 5284 | /* Write out the output symbols we have just constructed. */ |
57402f1e | 5285 | if (outsym > flaginfo->output_syms) |
116c20d2 NC |
5286 | { |
5287 | bfd_size_type outsym_size; | |
252b5132 | 5288 | |
57402f1e | 5289 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0) |
116c20d2 | 5290 | return FALSE; |
57402f1e | 5291 | outsym_size = outsym - flaginfo->output_syms; |
116c20d2 | 5292 | outsym_size *= EXTERNAL_NLIST_SIZE; |
57402f1e | 5293 | if (bfd_bwrite ((void *) flaginfo->output_syms, outsym_size, output_bfd) |
116c20d2 NC |
5294 | != outsym_size) |
5295 | return FALSE; | |
57402f1e | 5296 | flaginfo->symoff += outsym_size; |
116c20d2 | 5297 | } |
252b5132 | 5298 | |
116c20d2 NC |
5299 | return TRUE; |
5300 | } | |
252b5132 | 5301 | |
116c20d2 | 5302 | /* Link an a.out input BFD into the output file. */ |
252b5132 | 5303 | |
116c20d2 | 5304 | static bfd_boolean |
57402f1e | 5305 | aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
116c20d2 | 5306 | { |
116c20d2 | 5307 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); |
252b5132 | 5308 | |
116c20d2 NC |
5309 | /* If this is a dynamic object, it may need special handling. */ |
5310 | if ((input_bfd->flags & DYNAMIC) != 0 | |
5311 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
5312 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
57402f1e | 5313 | (flaginfo->info, input_bfd)); |
252b5132 | 5314 | |
116c20d2 | 5315 | /* Get the symbols. We probably have them already, unless |
57402f1e | 5316 | flaginfo->info->keep_memory is FALSE. */ |
116c20d2 NC |
5317 | if (! aout_get_external_symbols (input_bfd)) |
5318 | return FALSE; | |
252b5132 | 5319 | |
116c20d2 | 5320 | /* Write out the symbols and get a map of the new indices. The map |
57402f1e NC |
5321 | is placed into flaginfo->symbol_map. */ |
5322 | if (! aout_link_write_symbols (flaginfo, input_bfd)) | |
116c20d2 | 5323 | return FALSE; |
252b5132 | 5324 | |
116c20d2 NC |
5325 | /* Relocate and write out the sections. These functions use the |
5326 | symbol map created by aout_link_write_symbols. The linker_mark | |
5327 | field will be set if these sections are to be included in the | |
5328 | link, which will normally be the case. */ | |
5329 | if (obj_textsec (input_bfd)->linker_mark) | |
5330 | { | |
57402f1e | 5331 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 5332 | obj_textsec (input_bfd), |
57402f1e | 5333 | &flaginfo->treloff, |
116c20d2 NC |
5334 | exec_hdr (input_bfd)->a_trsize)) |
5335 | return FALSE; | |
5336 | } | |
5337 | if (obj_datasec (input_bfd)->linker_mark) | |
5338 | { | |
57402f1e | 5339 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 5340 | obj_datasec (input_bfd), |
57402f1e | 5341 | &flaginfo->dreloff, |
116c20d2 NC |
5342 | exec_hdr (input_bfd)->a_drsize)) |
5343 | return FALSE; | |
5344 | } | |
5345 | ||
5346 | /* If we are not keeping memory, we don't need the symbols any | |
5347 | longer. We still need them if we are keeping memory, because the | |
5348 | strings in the hash table point into them. */ | |
57402f1e | 5349 | if (! flaginfo->info->keep_memory) |
116c20d2 NC |
5350 | { |
5351 | if (! aout_link_free_symbols (input_bfd)) | |
5352 | return FALSE; | |
5353 | } | |
5354 | ||
5355 | return TRUE; | |
5356 | } | |
5357 | ||
5358 | /* Do the final link step. This is called on the output BFD. The | |
5359 | INFO structure should point to a list of BFDs linked through the | |
c72f2fb2 | 5360 | link.next field which can be used to find each BFD which takes part |
116c20d2 NC |
5361 | in the output. Also, each section in ABFD should point to a list |
5362 | of bfd_link_order structures which list all the input sections for | |
5363 | the output section. */ | |
5364 | ||
5365 | bfd_boolean | |
5366 | NAME (aout, final_link) (bfd *abfd, | |
5367 | struct bfd_link_info *info, | |
5368 | void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *)) | |
5369 | { | |
5370 | struct aout_final_link_info aout_info; | |
5371 | bfd_boolean includes_hash_initialized = FALSE; | |
5372 | bfd *sub; | |
5373 | bfd_size_type trsize, drsize; | |
5374 | bfd_size_type max_contents_size; | |
5375 | bfd_size_type max_relocs_size; | |
5376 | bfd_size_type max_sym_count; | |
116c20d2 NC |
5377 | struct bfd_link_order *p; |
5378 | asection *o; | |
5379 | bfd_boolean have_link_order_relocs; | |
5380 | ||
0e1862bb | 5381 | if (bfd_link_pic (info)) |
116c20d2 NC |
5382 | abfd->flags |= DYNAMIC; |
5383 | ||
5384 | aout_info.info = info; | |
5385 | aout_info.output_bfd = abfd; | |
5386 | aout_info.contents = NULL; | |
5387 | aout_info.relocs = NULL; | |
5388 | aout_info.symbol_map = NULL; | |
5389 | aout_info.output_syms = NULL; | |
252b5132 | 5390 | |
66eb6687 AM |
5391 | if (!bfd_hash_table_init_n (&aout_info.includes.root, |
5392 | aout_link_includes_newfunc, | |
5393 | sizeof (struct aout_link_includes_entry), | |
5394 | 251)) | |
116c20d2 NC |
5395 | goto error_return; |
5396 | includes_hash_initialized = TRUE; | |
252b5132 | 5397 | |
116c20d2 NC |
5398 | /* Figure out the largest section size. Also, if generating |
5399 | relocatable output, count the relocs. */ | |
5400 | trsize = 0; | |
5401 | drsize = 0; | |
5402 | max_contents_size = 0; | |
5403 | max_relocs_size = 0; | |
5404 | max_sym_count = 0; | |
c72f2fb2 | 5405 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 NC |
5406 | { |
5407 | bfd_size_type sz; | |
252b5132 | 5408 | |
0e1862bb | 5409 | if (bfd_link_relocatable (info)) |
116c20d2 NC |
5410 | { |
5411 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) | |
252b5132 | 5412 | { |
116c20d2 NC |
5413 | trsize += exec_hdr (sub)->a_trsize; |
5414 | drsize += exec_hdr (sub)->a_drsize; | |
252b5132 | 5415 | } |
252b5132 RH |
5416 | else |
5417 | { | |
116c20d2 NC |
5418 | /* FIXME: We need to identify the .text and .data sections |
5419 | and call get_reloc_upper_bound and canonicalize_reloc to | |
5420 | work out the number of relocs needed, and then multiply | |
5421 | by the reloc size. */ | |
4eca0228 | 5422 | _bfd_error_handler |
695344c0 | 5423 | /* xgettext:c-format */ |
dae82561 AM |
5424 | (_("%B: relocatable link from %s to %s not supported"), |
5425 | abfd, sub->xvec->name, abfd->xvec->name); | |
116c20d2 NC |
5426 | bfd_set_error (bfd_error_invalid_operation); |
5427 | goto error_return; | |
252b5132 | 5428 | } |
116c20d2 | 5429 | } |
252b5132 | 5430 | |
116c20d2 NC |
5431 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
5432 | { | |
5433 | sz = obj_textsec (sub)->size; | |
5434 | if (sz > max_contents_size) | |
5435 | max_contents_size = sz; | |
5436 | sz = obj_datasec (sub)->size; | |
5437 | if (sz > max_contents_size) | |
5438 | max_contents_size = sz; | |
252b5132 | 5439 | |
116c20d2 NC |
5440 | sz = exec_hdr (sub)->a_trsize; |
5441 | if (sz > max_relocs_size) | |
5442 | max_relocs_size = sz; | |
5443 | sz = exec_hdr (sub)->a_drsize; | |
5444 | if (sz > max_relocs_size) | |
5445 | max_relocs_size = sz; | |
252b5132 | 5446 | |
116c20d2 NC |
5447 | sz = obj_aout_external_sym_count (sub); |
5448 | if (sz > max_sym_count) | |
5449 | max_sym_count = sz; | |
252b5132 RH |
5450 | } |
5451 | } | |
5452 | ||
0e1862bb | 5453 | if (bfd_link_relocatable (info)) |
116c20d2 NC |
5454 | { |
5455 | if (obj_textsec (abfd) != NULL) | |
5456 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
8423293d | 5457 | ->map_head.link_order) |
116c20d2 NC |
5458 | * obj_reloc_entry_size (abfd)); |
5459 | if (obj_datasec (abfd) != NULL) | |
5460 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
8423293d | 5461 | ->map_head.link_order) |
116c20d2 NC |
5462 | * obj_reloc_entry_size (abfd)); |
5463 | } | |
252b5132 | 5464 | |
116c20d2 NC |
5465 | exec_hdr (abfd)->a_trsize = trsize; |
5466 | exec_hdr (abfd)->a_drsize = drsize; | |
252b5132 | 5467 | |
116c20d2 | 5468 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); |
252b5132 | 5469 | |
116c20d2 NC |
5470 | /* Adjust the section sizes and vmas according to the magic number. |
5471 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
5472 | filepos for each section. */ | |
3a8c4a5b | 5473 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
116c20d2 | 5474 | goto error_return; |
252b5132 | 5475 | |
116c20d2 NC |
5476 | /* The relocation and symbol file positions differ among a.out |
5477 | targets. We are passed a callback routine from the backend | |
5478 | specific code to handle this. | |
5479 | FIXME: At this point we do not know how much space the symbol | |
5480 | table will require. This will not work for any (nonstandard) | |
5481 | a.out target that needs to know the symbol table size before it | |
5482 | can compute the relocation file positions. This may or may not | |
5483 | be the case for the hp300hpux target, for example. */ | |
5484 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, | |
5485 | &aout_info.symoff); | |
5486 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
5487 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
5488 | obj_sym_filepos (abfd) = aout_info.symoff; | |
252b5132 | 5489 | |
116c20d2 NC |
5490 | /* We keep a count of the symbols as we output them. */ |
5491 | obj_aout_external_sym_count (abfd) = 0; | |
5492 | ||
5493 | /* We accumulate the string table as we write out the symbols. */ | |
5494 | aout_info.strtab = _bfd_stringtab_init (); | |
5495 | if (aout_info.strtab == NULL) | |
5496 | goto error_return; | |
5497 | ||
5498 | /* Allocate buffers to hold section contents and relocs. */ | |
a50b1753 | 5499 | aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size); |
116c20d2 | 5500 | aout_info.relocs = bfd_malloc (max_relocs_size); |
c38eb2a6 | 5501 | aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int)); |
a50b1753 NC |
5502 | aout_info.output_syms = (struct external_nlist *) |
5503 | bfd_malloc ((max_sym_count + 1) * sizeof (struct external_nlist)); | |
116c20d2 NC |
5504 | if ((aout_info.contents == NULL && max_contents_size != 0) |
5505 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
5506 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
5507 | || aout_info.output_syms == NULL) | |
5508 | goto error_return; | |
5509 | ||
5510 | /* If we have a symbol named __DYNAMIC, force it out now. This is | |
5511 | required by SunOS. Doing this here rather than in sunos.c is a | |
5512 | hack, but it's easier than exporting everything which would be | |
5513 | needed. */ | |
5514 | { | |
5515 | struct aout_link_hash_entry *h; | |
5516 | ||
5517 | h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", | |
5518 | FALSE, FALSE, FALSE); | |
5519 | if (h != NULL) | |
7686d77d | 5520 | aout_link_write_other_symbol (&h->root.root, &aout_info); |
116c20d2 NC |
5521 | } |
5522 | ||
5523 | /* The most time efficient way to do the link would be to read all | |
5524 | the input object files into memory and then sort out the | |
5525 | information into the output file. Unfortunately, that will | |
5526 | probably use too much memory. Another method would be to step | |
5527 | through everything that composes the text section and write it | |
5528 | out, and then everything that composes the data section and write | |
5529 | it out, and then write out the relocs, and then write out the | |
5530 | symbols. Unfortunately, that requires reading stuff from each | |
5531 | input file several times, and we will not be able to keep all the | |
5532 | input files open simultaneously, and reopening them will be slow. | |
5533 | ||
5534 | What we do is basically process one input file at a time. We do | |
5535 | everything we need to do with an input file once--copy over the | |
5536 | section contents, handle the relocation information, and write | |
5537 | out the symbols--and then we throw away the information we read | |
5538 | from it. This approach requires a lot of lseeks of the output | |
5539 | file, which is unfortunate but still faster than reopening a lot | |
5540 | of files. | |
5541 | ||
5542 | We use the output_has_begun field of the input BFDs to see | |
5543 | whether we have already handled it. */ | |
c72f2fb2 | 5544 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 | 5545 | sub->output_has_begun = FALSE; |
252b5132 | 5546 | |
116c20d2 NC |
5547 | /* Mark all sections which are to be included in the link. This |
5548 | will normally be every section. We need to do this so that we | |
5549 | can identify any sections which the linker has decided to not | |
5550 | include. */ | |
5551 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5552 | { |
8423293d | 5553 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
116c20d2 NC |
5554 | if (p->type == bfd_indirect_link_order) |
5555 | p->u.indirect.section->linker_mark = TRUE; | |
252b5132 RH |
5556 | } |
5557 | ||
116c20d2 NC |
5558 | have_link_order_relocs = FALSE; |
5559 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5560 | { |
8423293d | 5561 | for (p = o->map_head.link_order; |
116c20d2 NC |
5562 | p != NULL; |
5563 | p = p->next) | |
252b5132 | 5564 | { |
116c20d2 NC |
5565 | if (p->type == bfd_indirect_link_order |
5566 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
5567 | == bfd_target_aout_flavour)) | |
252b5132 | 5568 | { |
116c20d2 NC |
5569 | bfd *input_bfd; |
5570 | ||
5571 | input_bfd = p->u.indirect.section->owner; | |
5572 | if (! input_bfd->output_has_begun) | |
252b5132 | 5573 | { |
116c20d2 NC |
5574 | if (! aout_link_input_bfd (&aout_info, input_bfd)) |
5575 | goto error_return; | |
5576 | input_bfd->output_has_begun = TRUE; | |
252b5132 | 5577 | } |
252b5132 | 5578 | } |
116c20d2 NC |
5579 | else if (p->type == bfd_section_reloc_link_order |
5580 | || p->type == bfd_symbol_reloc_link_order) | |
5581 | { | |
5582 | /* These are handled below. */ | |
5583 | have_link_order_relocs = TRUE; | |
5584 | } | |
5585 | else | |
5586 | { | |
5587 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
5588 | goto error_return; | |
5589 | } | |
252b5132 RH |
5590 | } |
5591 | } | |
252b5132 | 5592 | |
116c20d2 | 5593 | /* Write out any symbols that we have not already written out. */ |
7686d77d AM |
5594 | bfd_hash_traverse (&info->hash->table, |
5595 | aout_link_write_other_symbol, | |
5596 | &aout_info); | |
116c20d2 NC |
5597 | |
5598 | /* Now handle any relocs we were asked to create by the linker. | |
5599 | These did not come from any input file. We must do these after | |
5600 | we have written out all the symbols, so that we know the symbol | |
5601 | indices to use. */ | |
5602 | if (have_link_order_relocs) | |
5603 | { | |
5604 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5605 | { |
8423293d | 5606 | for (p = o->map_head.link_order; |
116c20d2 NC |
5607 | p != NULL; |
5608 | p = p->next) | |
5609 | { | |
5610 | if (p->type == bfd_section_reloc_link_order | |
5611 | || p->type == bfd_symbol_reloc_link_order) | |
5612 | { | |
5613 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
5614 | goto error_return; | |
5615 | } | |
5616 | } | |
252b5132 | 5617 | } |
116c20d2 | 5618 | } |
252b5132 | 5619 | |
116c20d2 NC |
5620 | if (aout_info.contents != NULL) |
5621 | { | |
5622 | free (aout_info.contents); | |
5623 | aout_info.contents = NULL; | |
5624 | } | |
5625 | if (aout_info.relocs != NULL) | |
5626 | { | |
5627 | free (aout_info.relocs); | |
5628 | aout_info.relocs = NULL; | |
5629 | } | |
5630 | if (aout_info.symbol_map != NULL) | |
5631 | { | |
5632 | free (aout_info.symbol_map); | |
5633 | aout_info.symbol_map = NULL; | |
5634 | } | |
5635 | if (aout_info.output_syms != NULL) | |
5636 | { | |
5637 | free (aout_info.output_syms); | |
5638 | aout_info.output_syms = NULL; | |
5639 | } | |
5640 | if (includes_hash_initialized) | |
5641 | { | |
5642 | bfd_hash_table_free (&aout_info.includes.root); | |
5643 | includes_hash_initialized = FALSE; | |
5644 | } | |
252b5132 | 5645 | |
116c20d2 NC |
5646 | /* Finish up any dynamic linking we may be doing. */ |
5647 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
5648 | { | |
5649 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
5650 | goto error_return; | |
252b5132 RH |
5651 | } |
5652 | ||
116c20d2 NC |
5653 | /* Update the header information. */ |
5654 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
5655 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
5656 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
5657 | obj_textsec (abfd)->reloc_count = | |
5658 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
5659 | obj_datasec (abfd)->reloc_count = | |
5660 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
252b5132 | 5661 | |
116c20d2 | 5662 | /* Write out the string table, unless there are no symbols. */ |
f6e688f7 AM |
5663 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0) |
5664 | goto error_return; | |
116c20d2 NC |
5665 | if (abfd->symcount > 0) |
5666 | { | |
f6e688f7 | 5667 | if (!emit_stringtab (abfd, aout_info.strtab)) |
116c20d2 NC |
5668 | goto error_return; |
5669 | } | |
f6e688f7 | 5670 | else |
116c20d2 | 5671 | { |
f6e688f7 | 5672 | bfd_byte b[BYTES_IN_WORD]; |
252b5132 | 5673 | |
f6e688f7 AM |
5674 | memset (b, 0, BYTES_IN_WORD); |
5675 | if (bfd_bwrite (b, (bfd_size_type) BYTES_IN_WORD, abfd) != BYTES_IN_WORD) | |
116c20d2 NC |
5676 | goto error_return; |
5677 | } | |
252b5132 | 5678 | |
b34976b6 | 5679 | return TRUE; |
116c20d2 NC |
5680 | |
5681 | error_return: | |
5682 | if (aout_info.contents != NULL) | |
5683 | free (aout_info.contents); | |
5684 | if (aout_info.relocs != NULL) | |
5685 | free (aout_info.relocs); | |
5686 | if (aout_info.symbol_map != NULL) | |
5687 | free (aout_info.symbol_map); | |
5688 | if (aout_info.output_syms != NULL) | |
5689 | free (aout_info.output_syms); | |
5690 | if (includes_hash_initialized) | |
5691 | bfd_hash_table_free (&aout_info.includes.root); | |
5692 | return FALSE; | |
252b5132 | 5693 | } |