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252b5132 | 1 | /* BFD semi-generic back-end for a.out binaries. |
4b95cf5c | 2 | Copyright (C) 1990-2014 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), | |
206 | HOWTO (0, 0, 0, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE), | |
207 | HOWTO (0, 0, 0, 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; | |
923f08ff | 491 | if (N_DYNAMIC (*execp)) |
252b5132 RH |
492 | abfd->flags |= DYNAMIC; |
493 | ||
494 | if (N_MAGIC (*execp) == ZMAGIC) | |
495 | { | |
496 | abfd->flags |= D_PAGED | WP_TEXT; | |
497 | adata (abfd).magic = z_magic; | |
498 | } | |
499 | else if (N_MAGIC (*execp) == QMAGIC) | |
500 | { | |
501 | abfd->flags |= D_PAGED | WP_TEXT; | |
502 | adata (abfd).magic = z_magic; | |
503 | adata (abfd).subformat = q_magic_format; | |
504 | } | |
505 | else if (N_MAGIC (*execp) == NMAGIC) | |
506 | { | |
507 | abfd->flags |= WP_TEXT; | |
508 | adata (abfd).magic = n_magic; | |
509 | } | |
510 | else if (N_MAGIC (*execp) == OMAGIC | |
511 | || N_MAGIC (*execp) == BMAGIC) | |
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 | ||
923f08ff | 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. */ |
923f08ff 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. */ |
923f08ff 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. */ |
923f08ff 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. */ | |
583 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
584 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
585 | ||
586 | /* Determine the architecture and machine type of the object file. */ | |
923f08ff AM |
587 | switch (N_MACHTYPE (*exec_hdr (abfd))) |
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 | |
736 | || machine == bfd_mach_sparc_v9 | |
737 | || machine == bfd_mach_sparc_v9a | |
738 | || machine == bfd_mach_sparc_v9b) | |
923f08ff AM |
739 | arch_flags = M_SPARC; |
740 | else if (machine == bfd_mach_sparc_sparclet) | |
741 | arch_flags = M_SPARCLET; | |
742 | break; | |
743 | ||
744 | case bfd_arch_m68k: | |
745 | switch (machine) | |
746 | { | |
747 | case 0: arch_flags = M_68010; break; | |
b34976b6 | 748 | case bfd_mach_m68000: arch_flags = M_UNKNOWN; *unknown = FALSE; break; |
923f08ff AM |
749 | case bfd_mach_m68010: arch_flags = M_68010; break; |
750 | case bfd_mach_m68020: arch_flags = M_68020; break; | |
751 | default: arch_flags = M_UNKNOWN; break; | |
752 | } | |
252b5132 | 753 | break; |
923f08ff AM |
754 | |
755 | case bfd_arch_i386: | |
3b77b1d5 AM |
756 | if (machine == 0 |
757 | || machine == bfd_mach_i386_i386 | |
758 | || machine == bfd_mach_i386_i386_intel_syntax) | |
923f08ff | 759 | arch_flags = M_386; |
252b5132 | 760 | break; |
923f08ff | 761 | |
923f08ff AM |
762 | case bfd_arch_arm: |
763 | if (machine == 0) | |
764 | arch_flags = M_ARM; | |
252b5132 | 765 | break; |
252b5132 | 766 | |
923f08ff AM |
767 | case bfd_arch_mips: |
768 | switch (machine) | |
769 | { | |
770 | case 0: | |
771 | case bfd_mach_mips3000: | |
772 | case bfd_mach_mips3900: | |
773 | arch_flags = M_MIPS1; | |
774 | break; | |
775 | case bfd_mach_mips6000: | |
776 | arch_flags = M_MIPS2; | |
777 | break; | |
778 | case bfd_mach_mips4000: | |
779 | case bfd_mach_mips4010: | |
780 | case bfd_mach_mips4100: | |
781 | case bfd_mach_mips4300: | |
782 | case bfd_mach_mips4400: | |
783 | case bfd_mach_mips4600: | |
784 | case bfd_mach_mips4650: | |
785 | case bfd_mach_mips8000: | |
0d2e43ed | 786 | case bfd_mach_mips9000: |
923f08ff AM |
787 | case bfd_mach_mips10000: |
788 | case bfd_mach_mips12000: | |
3aa3176b TS |
789 | case bfd_mach_mips14000: |
790 | case bfd_mach_mips16000: | |
923f08ff AM |
791 | case bfd_mach_mips16: |
792 | case bfd_mach_mipsisa32: | |
af7ee8bf | 793 | case bfd_mach_mipsisa32r2: |
ae52f483 AB |
794 | case bfd_mach_mipsisa32r3: |
795 | case bfd_mach_mipsisa32r5: | |
7361da2c | 796 | case bfd_mach_mipsisa32r6: |
923f08ff AM |
797 | case bfd_mach_mips5: |
798 | case bfd_mach_mipsisa64: | |
5f74bc13 | 799 | case bfd_mach_mipsisa64r2: |
ae52f483 AB |
800 | case bfd_mach_mipsisa64r3: |
801 | case bfd_mach_mipsisa64r5: | |
7361da2c | 802 | case bfd_mach_mipsisa64r6: |
923f08ff | 803 | case bfd_mach_mips_sb1: |
52b6b6b9 | 804 | case bfd_mach_mips_xlr: |
923f08ff AM |
805 | /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */ |
806 | arch_flags = M_MIPS2; | |
807 | break; | |
808 | default: | |
809 | arch_flags = M_UNKNOWN; | |
810 | break; | |
811 | } | |
812 | break; | |
813 | ||
814 | case bfd_arch_ns32k: | |
815 | switch (machine) | |
816 | { | |
817 | case 0: arch_flags = M_NS32532; break; | |
818 | case 32032: arch_flags = M_NS32032; break; | |
819 | case 32532: arch_flags = M_NS32532; break; | |
820 | default: arch_flags = M_UNKNOWN; break; | |
821 | } | |
822 | break; | |
252b5132 | 823 | |
923f08ff | 824 | case bfd_arch_vax: |
b34976b6 | 825 | *unknown = FALSE; |
923f08ff | 826 | break; |
06c15ad7 | 827 | |
923f08ff AM |
828 | case bfd_arch_cris: |
829 | if (machine == 0 || machine == 255) | |
830 | arch_flags = M_CRIS; | |
831 | break; | |
832 | ||
727e493d MK |
833 | case bfd_arch_m88k: |
834 | *unknown = FALSE; | |
835 | break; | |
836 | ||
923f08ff AM |
837 | default: |
838 | arch_flags = M_UNKNOWN; | |
839 | } | |
252b5132 RH |
840 | |
841 | if (arch_flags != M_UNKNOWN) | |
b34976b6 | 842 | *unknown = FALSE; |
252b5132 RH |
843 | |
844 | return arch_flags; | |
845 | } | |
846 | ||
252b5132 RH |
847 | /* |
848 | FUNCTION | |
849 | aout_@var{size}_set_arch_mach | |
850 | ||
851 | SYNOPSIS | |
b34976b6 | 852 | bfd_boolean aout_@var{size}_set_arch_mach, |
252b5132 RH |
853 | (bfd *, |
854 | enum bfd_architecture arch, | |
116c20d2 | 855 | unsigned long machine); |
252b5132 RH |
856 | |
857 | DESCRIPTION | |
858 | Set the architecture and the machine of the BFD @var{abfd} to the | |
859 | values @var{arch} and @var{machine}. Verify that @var{abfd}'s format | |
860 | can support the architecture required. | |
861 | */ | |
862 | ||
b34976b6 | 863 | bfd_boolean |
116c20d2 NC |
864 | NAME (aout, set_arch_mach) (bfd *abfd, |
865 | enum bfd_architecture arch, | |
866 | unsigned long machine) | |
252b5132 RH |
867 | { |
868 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) | |
b34976b6 | 869 | return FALSE; |
252b5132 RH |
870 | |
871 | if (arch != bfd_arch_unknown) | |
872 | { | |
b34976b6 | 873 | bfd_boolean unknown; |
252b5132 | 874 | |
116c20d2 | 875 | NAME (aout, machine_type) (arch, machine, &unknown); |
252b5132 | 876 | if (unknown) |
b34976b6 | 877 | return FALSE; |
252b5132 RH |
878 | } |
879 | ||
f7c33884 | 880 | /* Determine the size of a relocation entry. */ |
923f08ff AM |
881 | switch (arch) |
882 | { | |
883 | case bfd_arch_sparc: | |
923f08ff AM |
884 | case bfd_arch_mips: |
885 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; | |
886 | break; | |
887 | default: | |
888 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
889 | break; | |
890 | } | |
252b5132 | 891 | |
923f08ff | 892 | return (*aout_backend_info (abfd)->set_sizes) (abfd); |
252b5132 RH |
893 | } |
894 | ||
895 | static void | |
116c20d2 | 896 | adjust_o_magic (bfd *abfd, struct internal_exec *execp) |
252b5132 RH |
897 | { |
898 | file_ptr pos = adata (abfd).exec_bytes_size; | |
899 | bfd_vma vma = 0; | |
900 | int pad = 0; | |
901 | ||
902 | /* Text. */ | |
923f08ff AM |
903 | obj_textsec (abfd)->filepos = pos; |
904 | if (!obj_textsec (abfd)->user_set_vma) | |
905 | obj_textsec (abfd)->vma = vma; | |
252b5132 | 906 | else |
923f08ff | 907 | vma = obj_textsec (abfd)->vma; |
252b5132 | 908 | |
eea6121a AM |
909 | pos += obj_textsec (abfd)->size; |
910 | vma += obj_textsec (abfd)->size; | |
252b5132 RH |
911 | |
912 | /* Data. */ | |
923f08ff | 913 | if (!obj_datasec (abfd)->user_set_vma) |
252b5132 | 914 | { |
eea6121a | 915 | obj_textsec (abfd)->size += pad; |
252b5132 RH |
916 | pos += pad; |
917 | vma += pad; | |
923f08ff | 918 | obj_datasec (abfd)->vma = vma; |
252b5132 RH |
919 | } |
920 | else | |
923f08ff AM |
921 | vma = obj_datasec (abfd)->vma; |
922 | obj_datasec (abfd)->filepos = pos; | |
eea6121a AM |
923 | pos += obj_datasec (abfd)->size; |
924 | vma += obj_datasec (abfd)->size; | |
252b5132 RH |
925 | |
926 | /* BSS. */ | |
923f08ff | 927 | if (!obj_bsssec (abfd)->user_set_vma) |
252b5132 | 928 | { |
eea6121a | 929 | obj_datasec (abfd)->size += pad; |
252b5132 RH |
930 | pos += pad; |
931 | vma += pad; | |
923f08ff | 932 | obj_bsssec (abfd)->vma = vma; |
252b5132 RH |
933 | } |
934 | else | |
935 | { | |
08da05b0 | 936 | /* The VMA of the .bss section is set by the VMA of the |
252b5132 RH |
937 | .data section plus the size of the .data section. We may |
938 | need to add padding bytes to make this true. */ | |
939 | pad = obj_bsssec (abfd)->vma - vma; | |
940 | if (pad > 0) | |
941 | { | |
eea6121a | 942 | obj_datasec (abfd)->size += pad; |
252b5132 RH |
943 | pos += pad; |
944 | } | |
945 | } | |
923f08ff | 946 | obj_bsssec (abfd)->filepos = pos; |
252b5132 RH |
947 | |
948 | /* Fix up the exec header. */ | |
eea6121a AM |
949 | execp->a_text = obj_textsec (abfd)->size; |
950 | execp->a_data = obj_datasec (abfd)->size; | |
951 | execp->a_bss = obj_bsssec (abfd)->size; | |
252b5132 RH |
952 | N_SET_MAGIC (*execp, OMAGIC); |
953 | } | |
954 | ||
955 | static void | |
116c20d2 | 956 | adjust_z_magic (bfd *abfd, struct internal_exec *execp) |
252b5132 RH |
957 | { |
958 | bfd_size_type data_pad, text_pad; | |
959 | file_ptr text_end; | |
dc810e39 | 960 | const struct aout_backend_data *abdp; |
116c20d2 NC |
961 | /* TRUE if text includes exec header. */ |
962 | bfd_boolean ztih; | |
0ef5a5bd | 963 | |
252b5132 RH |
964 | abdp = aout_backend_info (abfd); |
965 | ||
966 | /* Text. */ | |
967 | ztih = (abdp != NULL | |
968 | && (abdp->text_includes_header | |
969 | || obj_aout_subformat (abfd) == q_magic_format)); | |
923f08ff AM |
970 | obj_textsec (abfd)->filepos = (ztih |
971 | ? adata (abfd).exec_bytes_size | |
972 | : adata (abfd).zmagic_disk_block_size); | |
973 | if (! obj_textsec (abfd)->user_set_vma) | |
252b5132 RH |
974 | { |
975 | /* ?? Do we really need to check for relocs here? */ | |
923f08ff AM |
976 | obj_textsec (abfd)->vma = ((abfd->flags & HAS_RELOC) |
977 | ? 0 | |
978 | : (ztih | |
979 | ? (abdp->default_text_vma | |
980 | + adata (abfd).exec_bytes_size) | |
981 | : abdp->default_text_vma)); | |
252b5132 RH |
982 | text_pad = 0; |
983 | } | |
984 | else | |
985 | { | |
986 | /* The .text section is being loaded at an unusual address. We | |
987 | may need to pad it such that the .data section starts at a page | |
988 | boundary. */ | |
989 | if (ztih) | |
990 | text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma) | |
991 | & (adata (abfd).page_size - 1)); | |
992 | else | |
993 | text_pad = ((- obj_textsec (abfd)->vma) | |
994 | & (adata (abfd).page_size - 1)); | |
995 | } | |
996 | ||
997 | /* Find start of data. */ | |
998 | if (ztih) | |
999 | { | |
eea6121a | 1000 | text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->size; |
252b5132 RH |
1001 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
1002 | } | |
1003 | else | |
1004 | { | |
1005 | /* Note that if page_size == zmagic_disk_block_size, then | |
1006 | filepos == page_size, and this case is the same as the ztih | |
1007 | case. */ | |
eea6121a | 1008 | text_end = obj_textsec (abfd)->size; |
252b5132 RH |
1009 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
1010 | text_end += obj_textsec (abfd)->filepos; | |
1011 | } | |
eea6121a | 1012 | obj_textsec (abfd)->size += text_pad; |
252b5132 RH |
1013 | text_end += text_pad; |
1014 | ||
1015 | /* Data. */ | |
923f08ff | 1016 | if (!obj_datasec (abfd)->user_set_vma) |
252b5132 RH |
1017 | { |
1018 | bfd_vma vma; | |
eea6121a | 1019 | vma = obj_textsec (abfd)->vma + obj_textsec (abfd)->size; |
923f08ff | 1020 | obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size); |
252b5132 RH |
1021 | } |
1022 | if (abdp && abdp->zmagic_mapped_contiguous) | |
1023 | { | |
dee0a8f4 NC |
1024 | asection * text = obj_textsec (abfd); |
1025 | asection * data = obj_datasec (abfd); | |
1026 | ||
eea6121a | 1027 | text_pad = data->vma - (text->vma + text->size); |
dee0a8f4 NC |
1028 | /* Only pad the text section if the data |
1029 | section is going to be placed after it. */ | |
1030 | if (text_pad > 0) | |
eea6121a | 1031 | text->size += text_pad; |
252b5132 | 1032 | } |
923f08ff | 1033 | obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos |
eea6121a | 1034 | + obj_textsec (abfd)->size); |
0ef5a5bd | 1035 | |
252b5132 | 1036 | /* Fix up exec header while we're at it. */ |
eea6121a | 1037 | execp->a_text = obj_textsec (abfd)->size; |
252b5132 | 1038 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) |
923f08ff | 1039 | execp->a_text += adata (abfd).exec_bytes_size; |
252b5132 RH |
1040 | if (obj_aout_subformat (abfd) == q_magic_format) |
1041 | N_SET_MAGIC (*execp, QMAGIC); | |
1042 | else | |
1043 | N_SET_MAGIC (*execp, ZMAGIC); | |
1044 | ||
1045 | /* Spec says data section should be rounded up to page boundary. */ | |
eea6121a AM |
1046 | obj_datasec (abfd)->size |
1047 | = align_power (obj_datasec (abfd)->size, | |
923f08ff | 1048 | obj_bsssec (abfd)->alignment_power); |
eea6121a | 1049 | execp->a_data = BFD_ALIGN (obj_datasec (abfd)->size, |
923f08ff | 1050 | adata (abfd).page_size); |
eea6121a | 1051 | data_pad = execp->a_data - obj_datasec (abfd)->size; |
252b5132 RH |
1052 | |
1053 | /* BSS. */ | |
923f08ff AM |
1054 | if (!obj_bsssec (abfd)->user_set_vma) |
1055 | obj_bsssec (abfd)->vma = (obj_datasec (abfd)->vma | |
eea6121a | 1056 | + obj_datasec (abfd)->size); |
252b5132 RH |
1057 | /* If the BSS immediately follows the data section and extra space |
1058 | in the page is left after the data section, fudge data | |
1059 | in the header so that the bss section looks smaller by that | |
1060 | amount. We'll start the bss section there, and lie to the OS. | |
1061 | (Note that a linker script, as well as the above assignment, | |
1062 | could have explicitly set the BSS vma to immediately follow | |
1063 | the data section.) */ | |
923f08ff | 1064 | if (align_power (obj_bsssec (abfd)->vma, obj_bsssec (abfd)->alignment_power) |
eea6121a AM |
1065 | == obj_datasec (abfd)->vma + obj_datasec (abfd)->size) |
1066 | execp->a_bss = (data_pad > obj_bsssec (abfd)->size | |
1067 | ? 0 : obj_bsssec (abfd)->size - data_pad); | |
252b5132 | 1068 | else |
eea6121a | 1069 | execp->a_bss = obj_bsssec (abfd)->size; |
252b5132 RH |
1070 | } |
1071 | ||
1072 | static void | |
116c20d2 | 1073 | adjust_n_magic (bfd *abfd, struct internal_exec *execp) |
252b5132 | 1074 | { |
923f08ff | 1075 | file_ptr pos = adata (abfd).exec_bytes_size; |
252b5132 RH |
1076 | bfd_vma vma = 0; |
1077 | int pad; | |
0ef5a5bd | 1078 | |
252b5132 | 1079 | /* Text. */ |
923f08ff AM |
1080 | obj_textsec (abfd)->filepos = pos; |
1081 | if (!obj_textsec (abfd)->user_set_vma) | |
1082 | obj_textsec (abfd)->vma = vma; | |
252b5132 | 1083 | else |
923f08ff | 1084 | vma = obj_textsec (abfd)->vma; |
eea6121a AM |
1085 | pos += obj_textsec (abfd)->size; |
1086 | vma += obj_textsec (abfd)->size; | |
252b5132 RH |
1087 | |
1088 | /* Data. */ | |
923f08ff AM |
1089 | obj_datasec (abfd)->filepos = pos; |
1090 | if (!obj_datasec (abfd)->user_set_vma) | |
1091 | obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size); | |
1092 | vma = obj_datasec (abfd)->vma; | |
0ef5a5bd | 1093 | |
252b5132 | 1094 | /* Since BSS follows data immediately, see if it needs alignment. */ |
eea6121a | 1095 | vma += obj_datasec (abfd)->size; |
923f08ff | 1096 | pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma; |
eea6121a AM |
1097 | obj_datasec (abfd)->size += pad; |
1098 | pos += obj_datasec (abfd)->size; | |
252b5132 RH |
1099 | |
1100 | /* BSS. */ | |
923f08ff AM |
1101 | if (!obj_bsssec (abfd)->user_set_vma) |
1102 | obj_bsssec (abfd)->vma = vma; | |
252b5132 | 1103 | else |
923f08ff | 1104 | vma = obj_bsssec (abfd)->vma; |
252b5132 RH |
1105 | |
1106 | /* Fix up exec header. */ | |
eea6121a AM |
1107 | execp->a_text = obj_textsec (abfd)->size; |
1108 | execp->a_data = obj_datasec (abfd)->size; | |
1109 | execp->a_bss = obj_bsssec (abfd)->size; | |
252b5132 RH |
1110 | N_SET_MAGIC (*execp, NMAGIC); |
1111 | } | |
1112 | ||
b34976b6 | 1113 | bfd_boolean |
116c20d2 NC |
1114 | NAME (aout, adjust_sizes_and_vmas) (bfd *abfd, |
1115 | bfd_size_type *text_size, | |
1116 | file_ptr *text_end ATTRIBUTE_UNUSED) | |
252b5132 RH |
1117 | { |
1118 | struct internal_exec *execp = exec_hdr (abfd); | |
1119 | ||
116c20d2 | 1120 | if (! NAME (aout, make_sections) (abfd)) |
b34976b6 | 1121 | return FALSE; |
252b5132 | 1122 | |
923f08ff | 1123 | if (adata (abfd).magic != undecided_magic) |
b34976b6 | 1124 | return TRUE; |
252b5132 | 1125 | |
eea6121a AM |
1126 | obj_textsec (abfd)->size = |
1127 | align_power (obj_textsec (abfd)->size, | |
923f08ff | 1128 | obj_textsec (abfd)->alignment_power); |
252b5132 | 1129 | |
eea6121a | 1130 | *text_size = obj_textsec (abfd)->size; |
252b5132 RH |
1131 | /* Rule (heuristic) for when to pad to a new page. Note that there |
1132 | are (at least) two ways demand-paged (ZMAGIC) files have been | |
1133 | handled. Most Berkeley-based systems start the text segment at | |
1134 | (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text | |
1135 | segment right after the exec header; the latter is counted in the | |
1136 | text segment size, and is paged in by the kernel with the rest of | |
0ef5a5bd | 1137 | the text. */ |
252b5132 RH |
1138 | |
1139 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1140 | to understand enough to implement it. Better would probably be to go | |
1141 | right from BFD flags to alignment/positioning characteristics. But the | |
1142 | old code was sloppy enough about handling the flags, and had enough | |
1143 | other magic, that it was a little hard for me to understand. I think | |
1144 | I understand it better now, but I haven't time to do the cleanup this | |
1145 | minute. */ | |
1146 | ||
1147 | if (abfd->flags & D_PAGED) | |
1148 | /* Whether or not WP_TEXT is set -- let D_PAGED override. */ | |
923f08ff | 1149 | adata (abfd).magic = z_magic; |
252b5132 | 1150 | else if (abfd->flags & WP_TEXT) |
923f08ff | 1151 | adata (abfd).magic = n_magic; |
252b5132 | 1152 | else |
923f08ff | 1153 | adata (abfd).magic = o_magic; |
252b5132 RH |
1154 | |
1155 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1156 | #if __GNUC__ >= 2 | |
1157 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1158 | ({ char *str; | |
923f08ff AM |
1159 | switch (adata (abfd).magic) |
1160 | { | |
1161 | case n_magic: str = "NMAGIC"; break; | |
1162 | case o_magic: str = "OMAGIC"; break; | |
1163 | case z_magic: str = "ZMAGIC"; break; | |
1164 | default: abort (); | |
1165 | } | |
252b5132 RH |
1166 | str; |
1167 | }), | |
eea6121a | 1168 | obj_textsec (abfd)->vma, obj_textsec (abfd)->size, |
923f08ff | 1169 | obj_textsec (abfd)->alignment_power, |
eea6121a | 1170 | obj_datasec (abfd)->vma, obj_datasec (abfd)->size, |
923f08ff | 1171 | obj_datasec (abfd)->alignment_power, |
eea6121a | 1172 | obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size, |
923f08ff | 1173 | obj_bsssec (abfd)->alignment_power); |
252b5132 RH |
1174 | #endif |
1175 | #endif | |
1176 | ||
923f08ff | 1177 | switch (adata (abfd).magic) |
252b5132 RH |
1178 | { |
1179 | case o_magic: | |
1180 | adjust_o_magic (abfd, execp); | |
1181 | break; | |
1182 | case z_magic: | |
1183 | adjust_z_magic (abfd, execp); | |
1184 | break; | |
1185 | case n_magic: | |
1186 | adjust_n_magic (abfd, execp); | |
1187 | break; | |
1188 | default: | |
1189 | abort (); | |
1190 | } | |
1191 | ||
1192 | #ifdef BFD_AOUT_DEBUG | |
1193 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
eea6121a | 1194 | obj_textsec (abfd)->vma, obj_textsec (abfd)->size, |
923f08ff | 1195 | obj_textsec (abfd)->filepos, |
eea6121a | 1196 | obj_datasec (abfd)->vma, obj_datasec (abfd)->size, |
923f08ff | 1197 | obj_datasec (abfd)->filepos, |
eea6121a | 1198 | obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size); |
252b5132 RH |
1199 | #endif |
1200 | ||
b34976b6 | 1201 | return TRUE; |
252b5132 RH |
1202 | } |
1203 | ||
1204 | /* | |
1205 | FUNCTION | |
1206 | aout_@var{size}_new_section_hook | |
1207 | ||
1208 | SYNOPSIS | |
b34976b6 | 1209 | bfd_boolean aout_@var{size}_new_section_hook, |
252b5132 | 1210 | (bfd *abfd, |
116c20d2 | 1211 | asection *newsect); |
252b5132 RH |
1212 | |
1213 | DESCRIPTION | |
1214 | Called by the BFD in response to a @code{bfd_make_section} | |
1215 | request. | |
1216 | */ | |
b34976b6 | 1217 | bfd_boolean |
116c20d2 | 1218 | NAME (aout, new_section_hook) (bfd *abfd, asection *newsect) |
252b5132 | 1219 | { |
f7c33884 | 1220 | /* Align to double at least. */ |
923f08ff | 1221 | newsect->alignment_power = bfd_get_arch_info (abfd)->section_align_power; |
252b5132 | 1222 | |
252b5132 | 1223 | if (bfd_get_format (abfd) == bfd_object) |
f7c33884 NC |
1224 | { |
1225 | if (obj_textsec (abfd) == NULL && !strcmp (newsect->name, ".text")) | |
1226 | { | |
1227 | obj_textsec (abfd)= newsect; | |
1228 | newsect->target_index = N_TEXT; | |
f7c33884 | 1229 | } |
f592407e | 1230 | else if (obj_datasec (abfd) == NULL && !strcmp (newsect->name, ".data")) |
f7c33884 NC |
1231 | { |
1232 | obj_datasec (abfd) = newsect; | |
1233 | newsect->target_index = N_DATA; | |
f7c33884 | 1234 | } |
f592407e | 1235 | else if (obj_bsssec (abfd) == NULL && !strcmp (newsect->name, ".bss")) |
f7c33884 NC |
1236 | { |
1237 | obj_bsssec (abfd) = newsect; | |
1238 | newsect->target_index = N_BSS; | |
f7c33884 NC |
1239 | } |
1240 | } | |
252b5132 | 1241 | |
f7c33884 | 1242 | /* We allow more than three sections internally. */ |
f592407e | 1243 | return _bfd_generic_new_section_hook (abfd, newsect); |
252b5132 RH |
1244 | } |
1245 | ||
b34976b6 | 1246 | bfd_boolean |
116c20d2 NC |
1247 | NAME (aout, set_section_contents) (bfd *abfd, |
1248 | sec_ptr section, | |
1249 | const void * location, | |
1250 | file_ptr offset, | |
1251 | bfd_size_type count) | |
252b5132 RH |
1252 | { |
1253 | file_ptr text_end; | |
1254 | bfd_size_type text_size; | |
1255 | ||
1256 | if (! abfd->output_has_begun) | |
1257 | { | |
116c20d2 | 1258 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) |
b34976b6 | 1259 | return FALSE; |
252b5132 RH |
1260 | } |
1261 | ||
1262 | if (section == obj_bsssec (abfd)) | |
1263 | { | |
1264 | bfd_set_error (bfd_error_no_contents); | |
b34976b6 | 1265 | return FALSE; |
252b5132 RH |
1266 | } |
1267 | ||
1268 | if (section != obj_textsec (abfd) | |
1269 | && section != obj_datasec (abfd)) | |
1270 | { | |
e6af3a53 NC |
1271 | if (aout_section_merge_with_text_p (abfd, section)) |
1272 | section->filepos = obj_textsec (abfd)->filepos + | |
1273 | (section->vma - obj_textsec (abfd)->vma); | |
1274 | else | |
1275 | { | |
1276 | (*_bfd_error_handler) | |
1277 | (_("%s: can not represent section `%s' in a.out object file format"), | |
1278 | bfd_get_filename (abfd), bfd_get_section_name (abfd, section)); | |
1279 | bfd_set_error (bfd_error_nonrepresentable_section); | |
1280 | return FALSE; | |
1281 | } | |
252b5132 RH |
1282 | } |
1283 | ||
1284 | if (count != 0) | |
1285 | { | |
1286 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 | |
dc810e39 | 1287 | || bfd_bwrite (location, count, abfd) != count) |
b34976b6 | 1288 | return FALSE; |
252b5132 RH |
1289 | } |
1290 | ||
b34976b6 | 1291 | return TRUE; |
252b5132 RH |
1292 | } |
1293 | \f | |
1294 | /* Read the external symbols from an a.out file. */ | |
1295 | ||
b34976b6 | 1296 | static bfd_boolean |
116c20d2 | 1297 | aout_get_external_symbols (bfd *abfd) |
252b5132 | 1298 | { |
116c20d2 | 1299 | if (obj_aout_external_syms (abfd) == NULL) |
252b5132 RH |
1300 | { |
1301 | bfd_size_type count; | |
1302 | struct external_nlist *syms; | |
1303 | ||
1304 | count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE; | |
6b8f0fd5 MS |
1305 | if (count == 0) |
1306 | return TRUE; /* Nothing to do. */ | |
252b5132 RH |
1307 | |
1308 | #ifdef USE_MMAP | |
82e51918 AM |
1309 | if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), |
1310 | exec_hdr (abfd)->a_syms, | |
b34976b6 AM |
1311 | &obj_aout_sym_window (abfd), TRUE)) |
1312 | return FALSE; | |
252b5132 RH |
1313 | syms = (struct external_nlist *) obj_aout_sym_window (abfd).data; |
1314 | #else | |
1315 | /* We allocate using malloc to make the values easy to free | |
1316 | later on. If we put them on the objalloc it might not be | |
1317 | possible to free them. */ | |
a50b1753 | 1318 | syms = (struct external_nlist *) bfd_malloc (count * EXTERNAL_NLIST_SIZE); |
6b8f0fd5 | 1319 | if (syms == NULL) |
b34976b6 | 1320 | return FALSE; |
252b5132 | 1321 | |
848f5748 TT |
1322 | { |
1323 | bfd_size_type amt; | |
1324 | amt = exec_hdr (abfd)->a_syms; | |
1325 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
1326 | || bfd_bread (syms, amt, abfd) != amt) | |
1327 | { | |
1328 | free (syms); | |
1329 | return FALSE; | |
1330 | } | |
1331 | } | |
252b5132 RH |
1332 | #endif |
1333 | ||
1334 | obj_aout_external_syms (abfd) = syms; | |
1335 | obj_aout_external_sym_count (abfd) = count; | |
1336 | } | |
0ef5a5bd | 1337 | |
252b5132 RH |
1338 | if (obj_aout_external_strings (abfd) == NULL |
1339 | && exec_hdr (abfd)->a_syms != 0) | |
1340 | { | |
1341 | unsigned char string_chars[BYTES_IN_WORD]; | |
1342 | bfd_size_type stringsize; | |
1343 | char *strings; | |
dc810e39 | 1344 | bfd_size_type amt = BYTES_IN_WORD; |
252b5132 RH |
1345 | |
1346 | /* Get the size of the strings. */ | |
1347 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
116c20d2 | 1348 | || bfd_bread ((void *) string_chars, amt, abfd) != amt) |
b34976b6 | 1349 | return FALSE; |
252b5132 RH |
1350 | stringsize = GET_WORD (abfd, string_chars); |
1351 | ||
1352 | #ifdef USE_MMAP | |
82e51918 | 1353 | if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize, |
b34976b6 AM |
1354 | &obj_aout_string_window (abfd), TRUE)) |
1355 | return FALSE; | |
252b5132 RH |
1356 | strings = (char *) obj_aout_string_window (abfd).data; |
1357 | #else | |
a50b1753 | 1358 | strings = (char *) bfd_malloc (stringsize + 1); |
252b5132 | 1359 | if (strings == NULL) |
b34976b6 | 1360 | return FALSE; |
252b5132 RH |
1361 | |
1362 | /* Skip space for the string count in the buffer for convenience | |
1363 | when using indexes. */ | |
dc810e39 AM |
1364 | amt = stringsize - BYTES_IN_WORD; |
1365 | if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt) | |
252b5132 RH |
1366 | { |
1367 | free (strings); | |
b34976b6 | 1368 | return FALSE; |
252b5132 RH |
1369 | } |
1370 | #endif | |
1371 | ||
1372 | /* Ensure that a zero index yields an empty string. */ | |
1373 | strings[0] = '\0'; | |
1374 | ||
1375 | strings[stringsize - 1] = 0; | |
1376 | ||
1377 | obj_aout_external_strings (abfd) = strings; | |
1378 | obj_aout_external_string_size (abfd) = stringsize; | |
1379 | } | |
1380 | ||
b34976b6 | 1381 | return TRUE; |
252b5132 RH |
1382 | } |
1383 | ||
1384 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type | |
1385 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1386 | nlist structure. This function is responsible for setting | |
1387 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
1388 | ||
b34976b6 | 1389 | static bfd_boolean |
116c20d2 | 1390 | translate_from_native_sym_flags (bfd *abfd, aout_symbol_type *cache_ptr) |
252b5132 RH |
1391 | { |
1392 | flagword visible; | |
1393 | ||
1394 | if ((cache_ptr->type & N_STAB) != 0 | |
1395 | || cache_ptr->type == N_FN) | |
1396 | { | |
1397 | asection *sec; | |
1398 | ||
1399 | /* This is a debugging symbol. */ | |
252b5132 RH |
1400 | cache_ptr->symbol.flags = BSF_DEBUGGING; |
1401 | ||
1402 | /* Work out the symbol section. */ | |
1403 | switch (cache_ptr->type & N_TYPE) | |
1404 | { | |
1405 | case N_TEXT: | |
1406 | case N_FN: | |
1407 | sec = obj_textsec (abfd); | |
1408 | break; | |
1409 | case N_DATA: | |
1410 | sec = obj_datasec (abfd); | |
1411 | break; | |
1412 | case N_BSS: | |
1413 | sec = obj_bsssec (abfd); | |
1414 | break; | |
1415 | default: | |
1416 | case N_ABS: | |
1417 | sec = bfd_abs_section_ptr; | |
1418 | break; | |
1419 | } | |
1420 | ||
1421 | cache_ptr->symbol.section = sec; | |
1422 | cache_ptr->symbol.value -= sec->vma; | |
1423 | ||
b34976b6 | 1424 | return TRUE; |
252b5132 RH |
1425 | } |
1426 | ||
1427 | /* Get the default visibility. This does not apply to all types, so | |
1428 | we just hold it in a local variable to use if wanted. */ | |
1429 | if ((cache_ptr->type & N_EXT) == 0) | |
1430 | visible = BSF_LOCAL; | |
1431 | else | |
1432 | visible = BSF_GLOBAL; | |
1433 | ||
1434 | switch (cache_ptr->type) | |
1435 | { | |
1436 | default: | |
1437 | case N_ABS: case N_ABS | N_EXT: | |
1438 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1439 | cache_ptr->symbol.flags = visible; | |
1440 | break; | |
1441 | ||
1442 | case N_UNDF | N_EXT: | |
1443 | if (cache_ptr->symbol.value != 0) | |
1444 | { | |
1445 | /* This is a common symbol. */ | |
1446 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
1447 | cache_ptr->symbol.section = bfd_com_section_ptr; | |
1448 | } | |
1449 | else | |
1450 | { | |
1451 | cache_ptr->symbol.flags = 0; | |
1452 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1453 | } | |
1454 | break; | |
1455 | ||
1456 | case N_TEXT: case N_TEXT | N_EXT: | |
1457 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1458 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1459 | cache_ptr->symbol.flags = visible; | |
1460 | break; | |
1461 | ||
1462 | /* N_SETV symbols used to represent set vectors placed in the | |
1463 | data section. They are no longer generated. Theoretically, | |
1464 | it was possible to extract the entries and combine them with | |
1465 | new ones, although I don't know if that was ever actually | |
1466 | done. Unless that feature is restored, treat them as data | |
1467 | symbols. */ | |
1468 | case N_SETV: case N_SETV | N_EXT: | |
1469 | case N_DATA: case N_DATA | N_EXT: | |
1470 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1471 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1472 | cache_ptr->symbol.flags = visible; | |
1473 | break; | |
1474 | ||
1475 | case N_BSS: case N_BSS | N_EXT: | |
1476 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1477 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1478 | cache_ptr->symbol.flags = visible; | |
1479 | break; | |
1480 | ||
1481 | case N_SETA: case N_SETA | N_EXT: | |
1482 | case N_SETT: case N_SETT | N_EXT: | |
1483 | case N_SETD: case N_SETD | N_EXT: | |
1484 | case N_SETB: case N_SETB | N_EXT: | |
1485 | { | |
1486 | /* This code is no longer needed. It used to be used to make | |
1487 | the linker handle set symbols, but they are now handled in | |
1488 | the add_symbols routine instead. */ | |
252b5132 RH |
1489 | switch (cache_ptr->type & N_TYPE) |
1490 | { | |
1491 | case N_SETA: | |
1492 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1493 | break; | |
1494 | case N_SETT: | |
1495 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1496 | break; | |
1497 | case N_SETD: | |
1498 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1499 | break; | |
1500 | case N_SETB: | |
1501 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1502 | break; | |
1503 | } | |
1504 | ||
1505 | cache_ptr->symbol.flags |= BSF_CONSTRUCTOR; | |
1506 | } | |
1507 | break; | |
1508 | ||
1509 | case N_WARNING: | |
1510 | /* This symbol is the text of a warning message. The next | |
1511 | symbol is the symbol to associate the warning with. If a | |
1512 | reference is made to that symbol, a warning is issued. */ | |
1513 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
1514 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1515 | break; | |
1516 | ||
1517 | case N_INDR: case N_INDR | N_EXT: | |
1518 | /* An indirect symbol. This consists of two symbols in a row. | |
1519 | The first symbol is the name of the indirection. The second | |
1520 | symbol is the name of the target. A reference to the first | |
1521 | symbol becomes a reference to the second. */ | |
1522 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible; | |
1523 | cache_ptr->symbol.section = bfd_ind_section_ptr; | |
1524 | break; | |
1525 | ||
1526 | case N_WEAKU: | |
1527 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1528 | cache_ptr->symbol.flags = BSF_WEAK; | |
1529 | break; | |
1530 | ||
1531 | case N_WEAKA: | |
1532 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1533 | cache_ptr->symbol.flags = BSF_WEAK; | |
1534 | break; | |
1535 | ||
1536 | case N_WEAKT: | |
1537 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1538 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1539 | cache_ptr->symbol.flags = BSF_WEAK; | |
1540 | break; | |
1541 | ||
1542 | case N_WEAKD: | |
1543 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1544 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1545 | cache_ptr->symbol.flags = BSF_WEAK; | |
1546 | break; | |
1547 | ||
1548 | case N_WEAKB: | |
1549 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1550 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1551 | cache_ptr->symbol.flags = BSF_WEAK; | |
1552 | break; | |
1553 | } | |
1554 | ||
b34976b6 | 1555 | return TRUE; |
252b5132 RH |
1556 | } |
1557 | ||
1558 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ | |
1559 | ||
b34976b6 | 1560 | static bfd_boolean |
116c20d2 NC |
1561 | translate_to_native_sym_flags (bfd *abfd, |
1562 | asymbol *cache_ptr, | |
1563 | struct external_nlist *sym_pointer) | |
252b5132 RH |
1564 | { |
1565 | bfd_vma value = cache_ptr->value; | |
1566 | asection *sec; | |
1567 | bfd_vma off; | |
1568 | ||
1569 | /* Mask out any existing type bits in case copying from one section | |
1570 | to another. */ | |
1571 | sym_pointer->e_type[0] &= ~N_TYPE; | |
1572 | ||
1573 | sec = bfd_get_section (cache_ptr); | |
1574 | off = 0; | |
1575 | ||
1576 | if (sec == NULL) | |
1577 | { | |
1578 | /* This case occurs, e.g., for the *DEBUG* section of a COFF | |
1579 | file. */ | |
1580 | (*_bfd_error_handler) | |
1581 | (_("%s: can not represent section for symbol `%s' in a.out object file format"), | |
0ef5a5bd | 1582 | bfd_get_filename (abfd), |
252b5132 RH |
1583 | cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*")); |
1584 | bfd_set_error (bfd_error_nonrepresentable_section); | |
b34976b6 | 1585 | return FALSE; |
252b5132 RH |
1586 | } |
1587 | ||
1588 | if (sec->output_section != NULL) | |
1589 | { | |
1590 | off = sec->output_offset; | |
1591 | sec = sec->output_section; | |
1592 | } | |
1593 | ||
1594 | if (bfd_is_abs_section (sec)) | |
1595 | sym_pointer->e_type[0] |= N_ABS; | |
1596 | else if (sec == obj_textsec (abfd)) | |
1597 | sym_pointer->e_type[0] |= N_TEXT; | |
1598 | else if (sec == obj_datasec (abfd)) | |
1599 | sym_pointer->e_type[0] |= N_DATA; | |
1600 | else if (sec == obj_bsssec (abfd)) | |
1601 | sym_pointer->e_type[0] |= N_BSS; | |
1602 | else if (bfd_is_und_section (sec)) | |
1603 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1604 | else if (bfd_is_ind_section (sec)) | |
1605 | sym_pointer->e_type[0] = N_INDR; | |
1606 | else if (bfd_is_com_section (sec)) | |
1607 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1608 | else | |
1609 | { | |
e6af3a53 NC |
1610 | if (aout_section_merge_with_text_p (abfd, sec)) |
1611 | sym_pointer->e_type[0] |= N_TEXT; | |
1612 | else | |
1613 | { | |
1614 | (*_bfd_error_handler) | |
1615 | (_("%s: can not represent section `%s' in a.out object file format"), | |
1616 | bfd_get_filename (abfd), bfd_get_section_name (abfd, sec)); | |
1617 | bfd_set_error (bfd_error_nonrepresentable_section); | |
1618 | return FALSE; | |
1619 | } | |
252b5132 RH |
1620 | } |
1621 | ||
f7c33884 | 1622 | /* Turn the symbol from section relative to absolute again. */ |
252b5132 RH |
1623 | value += sec->vma + off; |
1624 | ||
1625 | if ((cache_ptr->flags & BSF_WARNING) != 0) | |
1626 | sym_pointer->e_type[0] = N_WARNING; | |
1627 | ||
1628 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) | |
1629 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1630 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
1631 | sym_pointer->e_type[0] |= N_EXT; | |
930d924d L |
1632 | else if ((cache_ptr->flags & BSF_LOCAL) != 0) |
1633 | sym_pointer->e_type[0] &= ~N_EXT; | |
252b5132 RH |
1634 | |
1635 | if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0) | |
1636 | { | |
1637 | int type = ((aout_symbol_type *) cache_ptr)->type; | |
f7c33884 | 1638 | |
252b5132 RH |
1639 | switch (type) |
1640 | { | |
1641 | case N_ABS: type = N_SETA; break; | |
1642 | case N_TEXT: type = N_SETT; break; | |
1643 | case N_DATA: type = N_SETD; break; | |
1644 | case N_BSS: type = N_SETB; break; | |
1645 | } | |
1646 | sym_pointer->e_type[0] = type; | |
1647 | } | |
1648 | ||
1649 | if ((cache_ptr->flags & BSF_WEAK) != 0) | |
1650 | { | |
1651 | int type; | |
1652 | ||
1653 | switch (sym_pointer->e_type[0] & N_TYPE) | |
1654 | { | |
1655 | default: | |
1656 | case N_ABS: type = N_WEAKA; break; | |
1657 | case N_TEXT: type = N_WEAKT; break; | |
1658 | case N_DATA: type = N_WEAKD; break; | |
1659 | case N_BSS: type = N_WEAKB; break; | |
1660 | case N_UNDF: type = N_WEAKU; break; | |
1661 | } | |
1662 | sym_pointer->e_type[0] = type; | |
1663 | } | |
1664 | ||
923f08ff | 1665 | PUT_WORD (abfd, value, sym_pointer->e_value); |
252b5132 | 1666 | |
b34976b6 | 1667 | return TRUE; |
252b5132 RH |
1668 | } |
1669 | \f | |
0ef5a5bd | 1670 | /* Native-level interface to symbols. */ |
252b5132 RH |
1671 | |
1672 | asymbol * | |
116c20d2 | 1673 | NAME (aout, make_empty_symbol) (bfd *abfd) |
252b5132 | 1674 | { |
dc810e39 | 1675 | bfd_size_type amt = sizeof (aout_symbol_type); |
116c20d2 | 1676 | |
d3ce72d0 NC |
1677 | aout_symbol_type *new_symbol = (aout_symbol_type *) bfd_zalloc (abfd, amt); |
1678 | if (!new_symbol) | |
252b5132 | 1679 | return NULL; |
d3ce72d0 | 1680 | new_symbol->symbol.the_bfd = abfd; |
252b5132 | 1681 | |
d3ce72d0 | 1682 | return &new_symbol->symbol; |
252b5132 RH |
1683 | } |
1684 | ||
1685 | /* Translate a set of internal symbols into external symbols. */ | |
1686 | ||
b34976b6 | 1687 | bfd_boolean |
116c20d2 NC |
1688 | NAME (aout, translate_symbol_table) (bfd *abfd, |
1689 | aout_symbol_type *in, | |
1690 | struct external_nlist *ext, | |
1691 | bfd_size_type count, | |
1692 | char *str, | |
1693 | bfd_size_type strsize, | |
1694 | bfd_boolean dynamic) | |
252b5132 RH |
1695 | { |
1696 | struct external_nlist *ext_end; | |
1697 | ||
1698 | ext_end = ext + count; | |
1699 | for (; ext < ext_end; ext++, in++) | |
1700 | { | |
1701 | bfd_vma x; | |
1702 | ||
1703 | x = GET_WORD (abfd, ext->e_strx); | |
1704 | in->symbol.the_bfd = abfd; | |
1705 | ||
1706 | /* For the normal symbols, the zero index points at the number | |
1707 | of bytes in the string table but is to be interpreted as the | |
1708 | null string. For the dynamic symbols, the number of bytes in | |
1709 | the string table is stored in the __DYNAMIC structure and the | |
1710 | zero index points at an actual string. */ | |
1711 | if (x == 0 && ! dynamic) | |
1712 | in->symbol.name = ""; | |
1713 | else if (x < strsize) | |
1714 | in->symbol.name = str + x; | |
1715 | else | |
b34976b6 | 1716 | return FALSE; |
252b5132 RH |
1717 | |
1718 | in->symbol.value = GET_SWORD (abfd, ext->e_value); | |
dc810e39 AM |
1719 | in->desc = H_GET_16 (abfd, ext->e_desc); |
1720 | in->other = H_GET_8 (abfd, ext->e_other); | |
1721 | in->type = H_GET_8 (abfd, ext->e_type); | |
252b5132 RH |
1722 | in->symbol.udata.p = NULL; |
1723 | ||
1724 | if (! translate_from_native_sym_flags (abfd, in)) | |
b34976b6 | 1725 | return FALSE; |
252b5132 RH |
1726 | |
1727 | if (dynamic) | |
1728 | in->symbol.flags |= BSF_DYNAMIC; | |
1729 | } | |
1730 | ||
b34976b6 | 1731 | return TRUE; |
252b5132 RH |
1732 | } |
1733 | ||
1734 | /* We read the symbols into a buffer, which is discarded when this | |
1735 | function exits. We read the strings into a buffer large enough to | |
0ef5a5bd | 1736 | hold them all plus all the cached symbol entries. */ |
252b5132 | 1737 | |
b34976b6 | 1738 | bfd_boolean |
116c20d2 | 1739 | NAME (aout, slurp_symbol_table) (bfd *abfd) |
252b5132 RH |
1740 | { |
1741 | struct external_nlist *old_external_syms; | |
1742 | aout_symbol_type *cached; | |
dc810e39 | 1743 | bfd_size_type cached_size; |
252b5132 | 1744 | |
f7c33884 | 1745 | /* If there's no work to be done, don't do any. */ |
116c20d2 | 1746 | if (obj_aout_symbols (abfd) != NULL) |
b34976b6 | 1747 | return TRUE; |
252b5132 RH |
1748 | |
1749 | old_external_syms = obj_aout_external_syms (abfd); | |
1750 | ||
1751 | if (! aout_get_external_symbols (abfd)) | |
b34976b6 | 1752 | return FALSE; |
252b5132 | 1753 | |
dc810e39 | 1754 | cached_size = obj_aout_external_sym_count (abfd); |
87b32780 MS |
1755 | if (cached_size == 0) |
1756 | return TRUE; /* Nothing to do. */ | |
1757 | ||
dc810e39 | 1758 | cached_size *= sizeof (aout_symbol_type); |
a50b1753 | 1759 | cached = (aout_symbol_type *) bfd_zmalloc (cached_size); |
87b32780 | 1760 | if (cached == NULL) |
b34976b6 | 1761 | return FALSE; |
252b5132 RH |
1762 | |
1763 | /* Convert from external symbol information to internal. */ | |
116c20d2 | 1764 | if (! (NAME (aout, translate_symbol_table) |
252b5132 RH |
1765 | (abfd, cached, |
1766 | obj_aout_external_syms (abfd), | |
1767 | obj_aout_external_sym_count (abfd), | |
1768 | obj_aout_external_strings (abfd), | |
1769 | obj_aout_external_string_size (abfd), | |
b34976b6 | 1770 | FALSE))) |
252b5132 RH |
1771 | { |
1772 | free (cached); | |
b34976b6 | 1773 | return FALSE; |
252b5132 RH |
1774 | } |
1775 | ||
1776 | bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd); | |
1777 | ||
1778 | obj_aout_symbols (abfd) = cached; | |
1779 | ||
1780 | /* It is very likely that anybody who calls this function will not | |
1781 | want the external symbol information, so if it was allocated | |
1782 | because of our call to aout_get_external_symbols, we free it up | |
1783 | right away to save space. */ | |
116c20d2 NC |
1784 | if (old_external_syms == NULL |
1785 | && obj_aout_external_syms (abfd) != NULL) | |
252b5132 RH |
1786 | { |
1787 | #ifdef USE_MMAP | |
1788 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
1789 | #else | |
1790 | free (obj_aout_external_syms (abfd)); | |
1791 | #endif | |
1792 | obj_aout_external_syms (abfd) = NULL; | |
1793 | } | |
1794 | ||
b34976b6 | 1795 | return TRUE; |
252b5132 RH |
1796 | } |
1797 | \f | |
1798 | /* We use a hash table when writing out symbols so that we only write | |
1799 | out a particular string once. This helps particularly when the | |
1800 | linker writes out stabs debugging entries, because each different | |
1801 | contributing object file tends to have many duplicate stabs | |
1802 | strings. | |
1803 | ||
1804 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it | |
1805 | if BFD_TRADITIONAL_FORMAT is set. */ | |
1806 | ||
252b5132 RH |
1807 | /* Get the index of a string in a strtab, adding it if it is not |
1808 | already present. */ | |
1809 | ||
116c20d2 NC |
1810 | static inline bfd_size_type |
1811 | add_to_stringtab (bfd *abfd, | |
1812 | struct bfd_strtab_hash *tab, | |
1813 | const char *str, | |
1814 | bfd_boolean copy) | |
252b5132 | 1815 | { |
b34976b6 | 1816 | bfd_boolean hash; |
91d6fa6a | 1817 | bfd_size_type str_index; |
252b5132 RH |
1818 | |
1819 | /* An index of 0 always means the empty string. */ | |
1820 | if (str == 0 || *str == '\0') | |
1821 | return 0; | |
1822 | ||
1823 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx | |
1824 | doesn't understand a hashed string table. */ | |
b34976b6 | 1825 | hash = TRUE; |
252b5132 | 1826 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
b34976b6 | 1827 | hash = FALSE; |
252b5132 | 1828 | |
91d6fa6a | 1829 | str_index = _bfd_stringtab_add (tab, str, hash, copy); |
252b5132 | 1830 | |
91d6fa6a | 1831 | if (str_index != (bfd_size_type) -1) |
116c20d2 NC |
1832 | /* Add BYTES_IN_WORD to the return value to account for the |
1833 | space taken up by the string table size. */ | |
91d6fa6a | 1834 | str_index += BYTES_IN_WORD; |
252b5132 | 1835 | |
91d6fa6a | 1836 | return str_index; |
252b5132 RH |
1837 | } |
1838 | ||
1839 | /* Write out a strtab. ABFD is already at the right location in the | |
1840 | file. */ | |
1841 | ||
b34976b6 | 1842 | static bfd_boolean |
116c20d2 | 1843 | emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab) |
252b5132 RH |
1844 | { |
1845 | bfd_byte buffer[BYTES_IN_WORD]; | |
dc810e39 | 1846 | bfd_size_type amt = BYTES_IN_WORD; |
252b5132 RH |
1847 | |
1848 | /* The string table starts with the size. */ | |
1849 | PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer); | |
116c20d2 | 1850 | if (bfd_bwrite ((void *) buffer, amt, abfd) != amt) |
b34976b6 | 1851 | return FALSE; |
252b5132 RH |
1852 | |
1853 | return _bfd_stringtab_emit (abfd, tab); | |
1854 | } | |
1855 | \f | |
b34976b6 | 1856 | bfd_boolean |
116c20d2 | 1857 | NAME (aout, write_syms) (bfd *abfd) |
252b5132 RH |
1858 | { |
1859 | unsigned int count ; | |
1860 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1861 | struct bfd_strtab_hash *strtab; | |
1862 | ||
1863 | strtab = _bfd_stringtab_init (); | |
1864 | if (strtab == NULL) | |
b34976b6 | 1865 | return FALSE; |
252b5132 RH |
1866 | |
1867 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1868 | { | |
1869 | asymbol *g = generic[count]; | |
1870 | bfd_size_type indx; | |
1871 | struct external_nlist nsp; | |
dc810e39 | 1872 | bfd_size_type amt; |
252b5132 | 1873 | |
b34976b6 | 1874 | indx = add_to_stringtab (abfd, strtab, g->name, FALSE); |
252b5132 RH |
1875 | if (indx == (bfd_size_type) -1) |
1876 | goto error_return; | |
1877 | PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx); | |
1878 | ||
923f08ff | 1879 | if (bfd_asymbol_flavour (g) == abfd->xvec->flavour) |
252b5132 | 1880 | { |
923f08ff AM |
1881 | H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc); |
1882 | H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other); | |
1883 | H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type); | |
252b5132 RH |
1884 | } |
1885 | else | |
1886 | { | |
dc810e39 AM |
1887 | H_PUT_16 (abfd, 0, nsp.e_desc); |
1888 | H_PUT_8 (abfd, 0, nsp.e_other); | |
1889 | H_PUT_8 (abfd, 0, nsp.e_type); | |
252b5132 RH |
1890 | } |
1891 | ||
1892 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) | |
1893 | goto error_return; | |
1894 | ||
dc810e39 | 1895 | amt = EXTERNAL_NLIST_SIZE; |
116c20d2 | 1896 | if (bfd_bwrite ((void *) &nsp, amt, abfd) != amt) |
252b5132 RH |
1897 | goto error_return; |
1898 | ||
1899 | /* NB: `KEEPIT' currently overlays `udata.p', so set this only | |
1900 | here, at the end. */ | |
1901 | g->KEEPIT = count; | |
1902 | } | |
1903 | ||
1904 | if (! emit_stringtab (abfd, strtab)) | |
1905 | goto error_return; | |
1906 | ||
1907 | _bfd_stringtab_free (strtab); | |
1908 | ||
b34976b6 | 1909 | return TRUE; |
252b5132 RH |
1910 | |
1911 | error_return: | |
1912 | _bfd_stringtab_free (strtab); | |
b34976b6 | 1913 | return FALSE; |
252b5132 | 1914 | } |
252b5132 RH |
1915 | \f |
1916 | long | |
116c20d2 | 1917 | NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location) |
252b5132 | 1918 | { |
116c20d2 NC |
1919 | unsigned int counter = 0; |
1920 | aout_symbol_type *symbase; | |
252b5132 | 1921 | |
116c20d2 NC |
1922 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
1923 | return -1; | |
252b5132 | 1924 | |
116c20d2 NC |
1925 | for (symbase = obj_aout_symbols (abfd); |
1926 | counter++ < bfd_get_symcount (abfd); | |
1927 | ) | |
1928 | *(location++) = (asymbol *) (symbase++); | |
1929 | *location++ =0; | |
1930 | return bfd_get_symcount (abfd); | |
252b5132 | 1931 | } |
252b5132 | 1932 | \f |
f7c33884 | 1933 | /* Standard reloc stuff. */ |
0ef5a5bd | 1934 | /* Output standard relocation information to a file in target byte order. */ |
252b5132 | 1935 | |
116c20d2 NC |
1936 | extern void NAME (aout, swap_std_reloc_out) |
1937 | (bfd *, arelent *, struct reloc_std_external *); | |
252b5132 RH |
1938 | |
1939 | void | |
116c20d2 NC |
1940 | NAME (aout, swap_std_reloc_out) (bfd *abfd, |
1941 | arelent *g, | |
1942 | struct reloc_std_external *natptr) | |
252b5132 RH |
1943 | { |
1944 | int r_index; | |
1945 | asymbol *sym = *(g->sym_ptr_ptr); | |
1946 | int r_extern; | |
1947 | unsigned int r_length; | |
1948 | int r_pcrel; | |
1949 | int r_baserel, r_jmptable, r_relative; | |
1950 | asection *output_section = sym->section->output_section; | |
1951 | ||
923f08ff | 1952 | PUT_WORD (abfd, g->address, natptr->r_address); |
252b5132 | 1953 | |
f7c33884 NC |
1954 | r_length = g->howto->size ; /* Size as a power of two. */ |
1955 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
252b5132 RH |
1956 | /* XXX This relies on relocs coming from a.out files. */ |
1957 | r_baserel = (g->howto->type & 8) != 0; | |
1958 | r_jmptable = (g->howto->type & 16) != 0; | |
1959 | r_relative = (g->howto->type & 32) != 0; | |
1960 | ||
f7c33884 | 1961 | /* Name was clobbered by aout_write_syms to be symbol index. */ |
252b5132 RH |
1962 | |
1963 | /* If this relocation is relative to a symbol then set the | |
1964 | r_index to the symbols index, and the r_extern bit. | |
1965 | ||
1966 | Absolute symbols can come in in two ways, either as an offset | |
1967 | from the abs section, or as a symbol which has an abs value. | |
f7c33884 | 1968 | check for that here. */ |
252b5132 | 1969 | |
252b5132 RH |
1970 | if (bfd_is_com_section (output_section) |
1971 | || bfd_is_abs_section (output_section) | |
22184a77 NC |
1972 | || bfd_is_und_section (output_section) |
1973 | /* PR gas/3041 a.out relocs against weak symbols | |
1974 | must be treated as if they were against externs. */ | |
1975 | || (sym->flags & BSF_WEAK)) | |
252b5132 RH |
1976 | { |
1977 | if (bfd_abs_section_ptr->symbol == sym) | |
f7c33884 NC |
1978 | { |
1979 | /* Whoops, looked like an abs symbol, but is | |
1980 | really an offset from the abs section. */ | |
1981 | r_index = N_ABS; | |
1982 | r_extern = 0; | |
1983 | } | |
252b5132 | 1984 | else |
f7c33884 NC |
1985 | { |
1986 | /* Fill in symbol. */ | |
1987 | r_extern = 1; | |
1988 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
1989 | } | |
252b5132 RH |
1990 | } |
1991 | else | |
1992 | { | |
f7c33884 | 1993 | /* Just an ordinary section. */ |
252b5132 RH |
1994 | r_extern = 0; |
1995 | r_index = output_section->target_index; | |
1996 | } | |
1997 | ||
f7c33884 | 1998 | /* Now the fun stuff. */ |
923f08ff AM |
1999 | if (bfd_header_big_endian (abfd)) |
2000 | { | |
252b5132 RH |
2001 | natptr->r_index[0] = r_index >> 16; |
2002 | natptr->r_index[1] = r_index >> 8; | |
2003 | natptr->r_index[2] = r_index; | |
923f08ff AM |
2004 | natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) |
2005 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
2006 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
2007 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
2008 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
2009 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
2010 | } | |
2011 | else | |
2012 | { | |
2013 | natptr->r_index[2] = r_index >> 16; | |
2014 | natptr->r_index[1] = r_index >> 8; | |
2015 | natptr->r_index[0] = r_index; | |
2016 | natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
2017 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
2018 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
2019 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
2020 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
2021 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
2022 | } | |
252b5132 RH |
2023 | } |
2024 | ||
f7c33884 | 2025 | /* Extended stuff. */ |
0ef5a5bd | 2026 | /* Output extended relocation information to a file in target byte order. */ |
252b5132 | 2027 | |
116c20d2 NC |
2028 | extern void NAME (aout, swap_ext_reloc_out) |
2029 | (bfd *, arelent *, struct reloc_ext_external *); | |
252b5132 RH |
2030 | |
2031 | void | |
116c20d2 NC |
2032 | NAME (aout, swap_ext_reloc_out) (bfd *abfd, |
2033 | arelent *g, | |
2034 | struct reloc_ext_external *natptr) | |
252b5132 RH |
2035 | { |
2036 | int r_index; | |
2037 | int r_extern; | |
2038 | unsigned int r_type; | |
dc810e39 | 2039 | bfd_vma r_addend; |
252b5132 RH |
2040 | asymbol *sym = *(g->sym_ptr_ptr); |
2041 | asection *output_section = sym->section->output_section; | |
2042 | ||
2043 | PUT_WORD (abfd, g->address, natptr->r_address); | |
2044 | ||
2045 | r_type = (unsigned int) g->howto->type; | |
2046 | ||
2047 | r_addend = g->addend; | |
2048 | if ((sym->flags & BSF_SECTION_SYM) != 0) | |
2049 | r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma; | |
2050 | ||
2051 | /* If this relocation is relative to a symbol then set the | |
2052 | r_index to the symbols index, and the r_extern bit. | |
2053 | ||
2054 | Absolute symbols can come in in two ways, either as an offset | |
2055 | from the abs section, or as a symbol which has an abs value. | |
2056 | check for that here. */ | |
252b5132 RH |
2057 | if (bfd_is_abs_section (bfd_get_section (sym))) |
2058 | { | |
2059 | r_extern = 0; | |
2060 | r_index = N_ABS; | |
2061 | } | |
2062 | else if ((sym->flags & BSF_SECTION_SYM) == 0) | |
2063 | { | |
2064 | if (bfd_is_und_section (bfd_get_section (sym)) | |
2065 | || (sym->flags & BSF_GLOBAL) != 0) | |
2066 | r_extern = 1; | |
2067 | else | |
2068 | r_extern = 0; | |
2069 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
2070 | } | |
2071 | else | |
2072 | { | |
f7c33884 | 2073 | /* Just an ordinary section. */ |
252b5132 RH |
2074 | r_extern = 0; |
2075 | r_index = output_section->target_index; | |
2076 | } | |
2077 | ||
f7c33884 | 2078 | /* Now the fun stuff. */ |
923f08ff AM |
2079 | if (bfd_header_big_endian (abfd)) |
2080 | { | |
2081 | natptr->r_index[0] = r_index >> 16; | |
2082 | natptr->r_index[1] = r_index >> 8; | |
2083 | natptr->r_index[2] = r_index; | |
2084 | natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
2085 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
2086 | } | |
2087 | else | |
2088 | { | |
2089 | natptr->r_index[2] = r_index >> 16; | |
2090 | natptr->r_index[1] = r_index >> 8; | |
2091 | natptr->r_index[0] = r_index; | |
2092 | natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
2093 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE)); | |
2094 | } | |
252b5132 RH |
2095 | |
2096 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
2097 | } | |
2098 | ||
2099 | /* BFD deals internally with all things based from the section they're | |
2100 | in. so, something in 10 bytes into a text section with a base of | |
2101 | 50 would have a symbol (.text+10) and know .text vma was 50. | |
2102 | ||
2103 | Aout keeps all it's symbols based from zero, so the symbol would | |
2104 | contain 60. This macro subs the base of each section from the value | |
923f08ff AM |
2105 | to give the true offset from the section. */ |
2106 | ||
2107 | #define MOVE_ADDRESS(ad) \ | |
2108 | if (r_extern) \ | |
2109 | { \ | |
2110 | /* Undefined symbol. */ \ | |
2111 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
252b5132 | 2112 | cache_ptr->addend = ad; \ |
252b5132 | 2113 | } \ |
923f08ff AM |
2114 | else \ |
2115 | { \ | |
2116 | /* Defined, section relative. Replace symbol with pointer to \ | |
2117 | symbol which points to section. */ \ | |
2118 | switch (r_index) \ | |
2119 | { \ | |
2120 | case N_TEXT: \ | |
2121 | case N_TEXT | N_EXT: \ | |
2122 | cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \ | |
2123 | cache_ptr->addend = ad - su->textsec->vma; \ | |
2124 | break; \ | |
2125 | case N_DATA: \ | |
2126 | case N_DATA | N_EXT: \ | |
2127 | cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \ | |
2128 | cache_ptr->addend = ad - su->datasec->vma; \ | |
2129 | break; \ | |
2130 | case N_BSS: \ | |
2131 | case N_BSS | N_EXT: \ | |
2132 | cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \ | |
2133 | cache_ptr->addend = ad - su->bsssec->vma; \ | |
2134 | break; \ | |
2135 | default: \ | |
2136 | case N_ABS: \ | |
2137 | case N_ABS | N_EXT: \ | |
2138 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ | |
2139 | cache_ptr->addend = ad; \ | |
2140 | break; \ | |
2141 | } \ | |
2142 | } | |
252b5132 RH |
2143 | |
2144 | void | |
116c20d2 NC |
2145 | NAME (aout, swap_ext_reloc_in) (bfd *abfd, |
2146 | struct reloc_ext_external *bytes, | |
2147 | arelent *cache_ptr, | |
2148 | asymbol **symbols, | |
2149 | bfd_size_type symcount) | |
252b5132 RH |
2150 | { |
2151 | unsigned int r_index; | |
2152 | int r_extern; | |
2153 | unsigned int r_type; | |
2154 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2155 | ||
2156 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
2157 | ||
f7c33884 | 2158 | /* Now the fun stuff. */ |
923f08ff AM |
2159 | if (bfd_header_big_endian (abfd)) |
2160 | { | |
d45913a0 DA |
2161 | r_index = (((unsigned int) bytes->r_index[0] << 16) |
2162 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2163 | | bytes->r_index[2]); |
2164 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
2165 | r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
2166 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
2167 | } | |
2168 | else | |
2169 | { | |
d45913a0 DA |
2170 | r_index = (((unsigned int) bytes->r_index[2] << 16) |
2171 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2172 | | bytes->r_index[0]); |
2173 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
2174 | r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
2175 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
2176 | } | |
252b5132 | 2177 | |
ad756e3f AM |
2178 | if (r_type < TABLE_SIZE (howto_table_ext)) |
2179 | cache_ptr->howto = howto_table_ext + r_type; | |
2180 | else | |
2181 | cache_ptr->howto = NULL; | |
252b5132 RH |
2182 | |
2183 | /* Base relative relocs are always against the symbol table, | |
2184 | regardless of the setting of r_extern. r_extern just reflects | |
2185 | whether the symbol the reloc is against is local or global. */ | |
d45913a0 DA |
2186 | if (r_type == (unsigned int) RELOC_BASE10 |
2187 | || r_type == (unsigned int) RELOC_BASE13 | |
2188 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
2189 | r_extern = 1; |
2190 | ||
2191 | if (r_extern && r_index > symcount) | |
2192 | { | |
2193 | /* We could arrange to return an error, but it might be useful | |
2194 | to see the file even if it is bad. */ | |
2195 | r_extern = 0; | |
2196 | r_index = N_ABS; | |
2197 | } | |
2198 | ||
923f08ff | 2199 | MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend)); |
252b5132 RH |
2200 | } |
2201 | ||
2202 | void | |
116c20d2 NC |
2203 | NAME (aout, swap_std_reloc_in) (bfd *abfd, |
2204 | struct reloc_std_external *bytes, | |
2205 | arelent *cache_ptr, | |
2206 | asymbol **symbols, | |
2207 | bfd_size_type symcount) | |
252b5132 RH |
2208 | { |
2209 | unsigned int r_index; | |
2210 | int r_extern; | |
2211 | unsigned int r_length; | |
2212 | int r_pcrel; | |
2213 | int r_baserel, r_jmptable, r_relative; | |
2214 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2215 | unsigned int howto_idx; | |
2216 | ||
dc810e39 | 2217 | cache_ptr->address = H_GET_32 (abfd, bytes->r_address); |
252b5132 | 2218 | |
f7c33884 | 2219 | /* Now the fun stuff. */ |
923f08ff AM |
2220 | if (bfd_header_big_endian (abfd)) |
2221 | { | |
d45913a0 DA |
2222 | r_index = (((unsigned int) bytes->r_index[0] << 16) |
2223 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2224 | | bytes->r_index[2]); |
2225 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
2226 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
2227 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
2228 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
2229 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
2230 | r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
2231 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
2232 | } | |
2233 | else | |
2234 | { | |
d45913a0 DA |
2235 | r_index = (((unsigned int) bytes->r_index[2] << 16) |
2236 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2237 | | bytes->r_index[0]); |
2238 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
2239 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
2240 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
2241 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
2242 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
2243 | r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
2244 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
2245 | } | |
252b5132 | 2246 | |
923f08ff AM |
2247 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel |
2248 | + 16 * r_jmptable + 32 * r_relative); | |
ad756e3f AM |
2249 | if (howto_idx < TABLE_SIZE (howto_table_std)) |
2250 | { | |
2251 | cache_ptr->howto = howto_table_std + howto_idx; | |
2252 | if (cache_ptr->howto->type == (unsigned int) -1) | |
2253 | cache_ptr->howto = NULL; | |
2254 | } | |
2255 | else | |
2256 | cache_ptr->howto = NULL; | |
252b5132 RH |
2257 | |
2258 | /* Base relative relocs are always against the symbol table, | |
2259 | regardless of the setting of r_extern. r_extern just reflects | |
2260 | whether the symbol the reloc is against is local or global. */ | |
2261 | if (r_baserel) | |
2262 | r_extern = 1; | |
2263 | ||
2264 | if (r_extern && r_index > symcount) | |
2265 | { | |
2266 | /* We could arrange to return an error, but it might be useful | |
2267 | to see the file even if it is bad. */ | |
2268 | r_extern = 0; | |
2269 | r_index = N_ABS; | |
2270 | } | |
2271 | ||
923f08ff | 2272 | MOVE_ADDRESS (0); |
252b5132 RH |
2273 | } |
2274 | ||
2275 | /* Read and swap the relocs for a section. */ | |
2276 | ||
b34976b6 | 2277 | bfd_boolean |
116c20d2 | 2278 | NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols) |
252b5132 | 2279 | { |
dc810e39 | 2280 | bfd_size_type count; |
252b5132 | 2281 | bfd_size_type reloc_size; |
116c20d2 | 2282 | void * relocs; |
252b5132 RH |
2283 | arelent *reloc_cache; |
2284 | size_t each_size; | |
2285 | unsigned int counter = 0; | |
2286 | arelent *cache_ptr; | |
dc810e39 | 2287 | bfd_size_type amt; |
252b5132 RH |
2288 | |
2289 | if (asect->relocation) | |
b34976b6 | 2290 | return TRUE; |
252b5132 RH |
2291 | |
2292 | if (asect->flags & SEC_CONSTRUCTOR) | |
b34976b6 | 2293 | return TRUE; |
252b5132 RH |
2294 | |
2295 | if (asect == obj_datasec (abfd)) | |
923f08ff | 2296 | reloc_size = exec_hdr (abfd)->a_drsize; |
252b5132 | 2297 | else if (asect == obj_textsec (abfd)) |
923f08ff | 2298 | reloc_size = exec_hdr (abfd)->a_trsize; |
252b5132 RH |
2299 | else if (asect == obj_bsssec (abfd)) |
2300 | reloc_size = 0; | |
2301 | else | |
2302 | { | |
2303 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 2304 | return FALSE; |
252b5132 RH |
2305 | } |
2306 | ||
078c4bfc MS |
2307 | if (reloc_size == 0) |
2308 | return TRUE; /* Nothing to be done. */ | |
2309 | ||
252b5132 | 2310 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) |
b34976b6 | 2311 | return FALSE; |
252b5132 RH |
2312 | |
2313 | each_size = obj_reloc_entry_size (abfd); | |
2314 | ||
2315 | count = reloc_size / each_size; | |
078c4bfc MS |
2316 | if (count == 0) |
2317 | return TRUE; /* Nothing to be done. */ | |
252b5132 | 2318 | |
dc810e39 | 2319 | amt = count * sizeof (arelent); |
a50b1753 | 2320 | reloc_cache = (arelent *) bfd_zmalloc (amt); |
078c4bfc | 2321 | if (reloc_cache == NULL) |
b34976b6 | 2322 | return FALSE; |
252b5132 | 2323 | |
dc810e39 | 2324 | relocs = bfd_malloc (reloc_size); |
078c4bfc | 2325 | if (relocs == NULL) |
252b5132 RH |
2326 | { |
2327 | free (reloc_cache); | |
b34976b6 | 2328 | return FALSE; |
252b5132 RH |
2329 | } |
2330 | ||
dc810e39 | 2331 | if (bfd_bread (relocs, reloc_size, abfd) != reloc_size) |
252b5132 RH |
2332 | { |
2333 | free (relocs); | |
2334 | free (reloc_cache); | |
b34976b6 | 2335 | return FALSE; |
252b5132 RH |
2336 | } |
2337 | ||
2338 | cache_ptr = reloc_cache; | |
2339 | if (each_size == RELOC_EXT_SIZE) | |
2340 | { | |
dc810e39 | 2341 | struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; |
252b5132 RH |
2342 | |
2343 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
1642229e | 2344 | MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols, |
dc810e39 | 2345 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
2346 | } |
2347 | else | |
2348 | { | |
dc810e39 | 2349 | struct reloc_std_external *rptr = (struct reloc_std_external *) relocs; |
252b5132 RH |
2350 | |
2351 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
2352 | MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols, | |
dc810e39 | 2353 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
2354 | } |
2355 | ||
2356 | free (relocs); | |
2357 | ||
2358 | asect->relocation = reloc_cache; | |
2359 | asect->reloc_count = cache_ptr - reloc_cache; | |
2360 | ||
b34976b6 | 2361 | return TRUE; |
252b5132 RH |
2362 | } |
2363 | ||
2364 | /* Write out a relocation section into an object file. */ | |
2365 | ||
b34976b6 | 2366 | bfd_boolean |
116c20d2 | 2367 | NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section) |
252b5132 RH |
2368 | { |
2369 | arelent **generic; | |
2370 | unsigned char *native, *natptr; | |
2371 | size_t each_size; | |
2372 | ||
2373 | unsigned int count = section->reloc_count; | |
dc810e39 | 2374 | bfd_size_type natsize; |
252b5132 RH |
2375 | |
2376 | if (count == 0 || section->orelocation == NULL) | |
b34976b6 | 2377 | return TRUE; |
252b5132 RH |
2378 | |
2379 | each_size = obj_reloc_entry_size (abfd); | |
dc810e39 | 2380 | natsize = (bfd_size_type) each_size * count; |
a50b1753 | 2381 | native = (unsigned char *) bfd_zalloc (abfd, natsize); |
252b5132 | 2382 | if (!native) |
b34976b6 | 2383 | return FALSE; |
252b5132 RH |
2384 | |
2385 | generic = section->orelocation; | |
2386 | ||
2387 | if (each_size == RELOC_EXT_SIZE) | |
2388 | { | |
2389 | for (natptr = native; | |
2390 | count != 0; | |
2391 | --count, natptr += each_size, ++generic) | |
1642229e HPN |
2392 | MY_swap_ext_reloc_out (abfd, *generic, |
2393 | (struct reloc_ext_external *) natptr); | |
252b5132 RH |
2394 | } |
2395 | else | |
2396 | { | |
2397 | for (natptr = native; | |
2398 | count != 0; | |
2399 | --count, natptr += each_size, ++generic) | |
923f08ff AM |
2400 | MY_swap_std_reloc_out (abfd, *generic, |
2401 | (struct reloc_std_external *) natptr); | |
252b5132 RH |
2402 | } |
2403 | ||
116c20d2 | 2404 | if (bfd_bwrite ((void *) native, natsize, abfd) != natsize) |
dc810e39 | 2405 | { |
923f08ff | 2406 | bfd_release (abfd, native); |
b34976b6 | 2407 | return FALSE; |
dc810e39 | 2408 | } |
252b5132 RH |
2409 | bfd_release (abfd, native); |
2410 | ||
b34976b6 | 2411 | return TRUE; |
252b5132 RH |
2412 | } |
2413 | ||
f7c33884 NC |
2414 | /* This is stupid. This function should be a boolean predicate. */ |
2415 | ||
252b5132 | 2416 | long |
116c20d2 NC |
2417 | NAME (aout, canonicalize_reloc) (bfd *abfd, |
2418 | sec_ptr section, | |
2419 | arelent **relptr, | |
2420 | asymbol **symbols) | |
252b5132 RH |
2421 | { |
2422 | arelent *tblptr = section->relocation; | |
2423 | unsigned int count; | |
2424 | ||
2425 | if (section == obj_bsssec (abfd)) | |
2426 | { | |
2427 | *relptr = NULL; | |
2428 | return 0; | |
2429 | } | |
2430 | ||
116c20d2 | 2431 | if (!(tblptr || NAME (aout, slurp_reloc_table) (abfd, section, symbols))) |
252b5132 RH |
2432 | return -1; |
2433 | ||
923f08ff AM |
2434 | if (section->flags & SEC_CONSTRUCTOR) |
2435 | { | |
2436 | arelent_chain *chain = section->constructor_chain; | |
2437 | for (count = 0; count < section->reloc_count; count ++) | |
2438 | { | |
2439 | *relptr ++ = &chain->relent; | |
2440 | chain = chain->next; | |
2441 | } | |
252b5132 | 2442 | } |
923f08ff AM |
2443 | else |
2444 | { | |
2445 | tblptr = section->relocation; | |
252b5132 | 2446 | |
923f08ff AM |
2447 | for (count = 0; count++ < section->reloc_count; ) |
2448 | { | |
2449 | *relptr++ = tblptr++; | |
2450 | } | |
2451 | } | |
252b5132 RH |
2452 | *relptr = 0; |
2453 | ||
2454 | return section->reloc_count; | |
2455 | } | |
2456 | ||
2457 | long | |
116c20d2 | 2458 | NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect) |
252b5132 | 2459 | { |
923f08ff AM |
2460 | if (bfd_get_format (abfd) != bfd_object) |
2461 | { | |
2462 | bfd_set_error (bfd_error_invalid_operation); | |
2463 | return -1; | |
2464 | } | |
f7c33884 | 2465 | |
923f08ff | 2466 | if (asect->flags & SEC_CONSTRUCTOR) |
116c20d2 | 2467 | return sizeof (arelent *) * (asect->reloc_count + 1); |
252b5132 RH |
2468 | |
2469 | if (asect == obj_datasec (abfd)) | |
116c20d2 NC |
2470 | return sizeof (arelent *) |
2471 | * ((exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd)) | |
2472 | + 1); | |
252b5132 RH |
2473 | |
2474 | if (asect == obj_textsec (abfd)) | |
116c20d2 NC |
2475 | return sizeof (arelent *) |
2476 | * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd)) | |
2477 | + 1); | |
252b5132 RH |
2478 | |
2479 | if (asect == obj_bsssec (abfd)) | |
2480 | return sizeof (arelent *); | |
2481 | ||
2482 | if (asect == obj_bsssec (abfd)) | |
2483 | return 0; | |
2484 | ||
2485 | bfd_set_error (bfd_error_invalid_operation); | |
2486 | return -1; | |
2487 | } | |
252b5132 RH |
2488 | \f |
2489 | long | |
116c20d2 | 2490 | NAME (aout, get_symtab_upper_bound) (bfd *abfd) |
252b5132 | 2491 | { |
116c20d2 | 2492 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
252b5132 RH |
2493 | return -1; |
2494 | ||
2495 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
2496 | } | |
2497 | ||
1725a96e | 2498 | alent * |
116c20d2 NC |
2499 | NAME (aout, get_lineno) (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
2500 | asymbol *ignore_symbol ATTRIBUTE_UNUSED) | |
252b5132 | 2501 | { |
116c20d2 | 2502 | return NULL; |
252b5132 RH |
2503 | } |
2504 | ||
252b5132 | 2505 | void |
116c20d2 NC |
2506 | NAME (aout, get_symbol_info) (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
2507 | asymbol *symbol, | |
2508 | symbol_info *ret) | |
252b5132 RH |
2509 | { |
2510 | bfd_symbol_info (symbol, ret); | |
2511 | ||
2512 | if (ret->type == '?') | |
2513 | { | |
923f08ff | 2514 | int type_code = aout_symbol (symbol)->type & 0xff; |
252b5132 RH |
2515 | const char *stab_name = bfd_get_stab_name (type_code); |
2516 | static char buf[10]; | |
2517 | ||
2518 | if (stab_name == NULL) | |
2519 | { | |
e60b52c6 | 2520 | sprintf (buf, "(%d)", type_code); |
252b5132 RH |
2521 | stab_name = buf; |
2522 | } | |
2523 | ret->type = '-'; | |
2524 | ret->stab_type = type_code; | |
923f08ff AM |
2525 | ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff); |
2526 | ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff); | |
252b5132 RH |
2527 | ret->stab_name = stab_name; |
2528 | } | |
2529 | } | |
2530 | ||
252b5132 | 2531 | void |
116c20d2 NC |
2532 | NAME (aout, print_symbol) (bfd *abfd, |
2533 | void * afile, | |
2534 | asymbol *symbol, | |
2535 | bfd_print_symbol_type how) | |
252b5132 RH |
2536 | { |
2537 | FILE *file = (FILE *)afile; | |
2538 | ||
923f08ff | 2539 | switch (how) |
252b5132 | 2540 | { |
923f08ff AM |
2541 | case bfd_print_symbol_name: |
2542 | if (symbol->name) | |
2543 | fprintf (file,"%s", symbol->name); | |
2544 | break; | |
2545 | case bfd_print_symbol_more: | |
2546 | fprintf (file,"%4x %2x %2x", | |
2547 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2548 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2549 | (unsigned) (aout_symbol (symbol)->type)); | |
2550 | break; | |
2551 | case bfd_print_symbol_all: | |
2552 | { | |
2553 | const char *section_name = symbol->section->name; | |
252b5132 | 2554 | |
116c20d2 | 2555 | bfd_print_symbol_vandf (abfd, (void *)file, symbol); |
252b5132 | 2556 | |
923f08ff AM |
2557 | fprintf (file," %-5s %04x %02x %02x", |
2558 | section_name, | |
2559 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2560 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2561 | (unsigned) (aout_symbol (symbol)->type & 0xff)); | |
2562 | if (symbol->name) | |
2563 | fprintf (file," %s", symbol->name); | |
2564 | } | |
2565 | break; | |
252b5132 | 2566 | } |
252b5132 RH |
2567 | } |
2568 | ||
2569 | /* If we don't have to allocate more than 1MB to hold the generic | |
2570 | symbols, we use the generic minisymbol methord: it's faster, since | |
2571 | it only translates the symbols once, not multiple times. */ | |
2572 | #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) | |
2573 | ||
2574 | /* Read minisymbols. For minisymbols, we use the unmodified a.out | |
2575 | symbols. The minisymbol_to_symbol function translates these into | |
2576 | BFD asymbol structures. */ | |
2577 | ||
2578 | long | |
116c20d2 NC |
2579 | NAME (aout, read_minisymbols) (bfd *abfd, |
2580 | bfd_boolean dynamic, | |
2581 | void * *minisymsp, | |
2582 | unsigned int *sizep) | |
252b5132 RH |
2583 | { |
2584 | if (dynamic) | |
116c20d2 NC |
2585 | /* We could handle the dynamic symbols here as well, but it's |
2586 | easier to hand them off. */ | |
2587 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
252b5132 RH |
2588 | |
2589 | if (! aout_get_external_symbols (abfd)) | |
2590 | return -1; | |
2591 | ||
2592 | if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2593 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2594 | ||
116c20d2 | 2595 | *minisymsp = (void *) obj_aout_external_syms (abfd); |
252b5132 RH |
2596 | |
2597 | /* By passing the external symbols back from this routine, we are | |
2598 | giving up control over the memory block. Clear | |
2599 | obj_aout_external_syms, so that we do not try to free it | |
2600 | ourselves. */ | |
2601 | obj_aout_external_syms (abfd) = NULL; | |
2602 | ||
2603 | *sizep = EXTERNAL_NLIST_SIZE; | |
2604 | return obj_aout_external_sym_count (abfd); | |
2605 | } | |
2606 | ||
2607 | /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an | |
2608 | unmodified a.out symbol. The SYM argument is a structure returned | |
2609 | by bfd_make_empty_symbol, which we fill in here. */ | |
2610 | ||
2611 | asymbol * | |
116c20d2 NC |
2612 | NAME (aout, minisymbol_to_symbol) (bfd *abfd, |
2613 | bfd_boolean dynamic, | |
2614 | const void * minisym, | |
2615 | asymbol *sym) | |
252b5132 RH |
2616 | { |
2617 | if (dynamic | |
2618 | || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2619 | return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); | |
2620 | ||
2621 | memset (sym, 0, sizeof (aout_symbol_type)); | |
2622 | ||
2623 | /* We call translate_symbol_table to translate a single symbol. */ | |
116c20d2 | 2624 | if (! (NAME (aout, translate_symbol_table) |
252b5132 RH |
2625 | (abfd, |
2626 | (aout_symbol_type *) sym, | |
2627 | (struct external_nlist *) minisym, | |
2628 | (bfd_size_type) 1, | |
2629 | obj_aout_external_strings (abfd), | |
2630 | obj_aout_external_string_size (abfd), | |
b34976b6 | 2631 | FALSE))) |
252b5132 RH |
2632 | return NULL; |
2633 | ||
2634 | return sym; | |
2635 | } | |
2636 | ||
f7c33884 NC |
2637 | /* Provided a BFD, a section and an offset into the section, calculate |
2638 | and return the name of the source file and the line nearest to the | |
2639 | wanted location. */ | |
252b5132 | 2640 | |
b34976b6 | 2641 | bfd_boolean |
116c20d2 | 2642 | NAME (aout, find_nearest_line) (bfd *abfd, |
116c20d2 | 2643 | asymbol **symbols, |
fb167eb2 | 2644 | asection *section, |
116c20d2 NC |
2645 | bfd_vma offset, |
2646 | const char **filename_ptr, | |
2647 | const char **functionname_ptr, | |
fb167eb2 AM |
2648 | unsigned int *line_ptr, |
2649 | unsigned int *disriminator_ptr) | |
252b5132 | 2650 | { |
f7c33884 | 2651 | /* Run down the file looking for the filename, function and linenumber. */ |
252b5132 | 2652 | asymbol **p; |
dc810e39 AM |
2653 | const char *directory_name = NULL; |
2654 | const char *main_file_name = NULL; | |
2655 | const char *current_file_name = NULL; | |
116c20d2 | 2656 | const char *line_file_name = NULL; /* Value of current_file_name at line number. */ |
dc810e39 | 2657 | const char *line_directory_name = NULL; /* Value of directory_name at line number. */ |
252b5132 RH |
2658 | bfd_vma low_line_vma = 0; |
2659 | bfd_vma low_func_vma = 0; | |
2660 | asymbol *func = 0; | |
dc810e39 | 2661 | bfd_size_type filelen, funclen; |
252b5132 RH |
2662 | char *buf; |
2663 | ||
2664 | *filename_ptr = abfd->filename; | |
2665 | *functionname_ptr = 0; | |
2666 | *line_ptr = 0; | |
fb167eb2 AM |
2667 | if (disriminator_ptr) |
2668 | *disriminator_ptr = 0; | |
f7c33884 | 2669 | |
116c20d2 | 2670 | if (symbols != NULL) |
923f08ff AM |
2671 | { |
2672 | for (p = symbols; *p; p++) | |
2673 | { | |
2674 | aout_symbol_type *q = (aout_symbol_type *) (*p); | |
2675 | next: | |
2676 | switch (q->type) | |
2677 | { | |
2678 | case N_TEXT: | |
2679 | /* If this looks like a file name symbol, and it comes after | |
2680 | the line number we have found so far, but before the | |
2681 | offset, then we have probably not found the right line | |
2682 | number. */ | |
2683 | if (q->symbol.value <= offset | |
2684 | && ((q->symbol.value > low_line_vma | |
2685 | && (line_file_name != NULL | |
2686 | || *line_ptr != 0)) | |
2687 | || (q->symbol.value > low_func_vma | |
2688 | && func != NULL))) | |
2689 | { | |
2690 | const char *symname; | |
252b5132 | 2691 | |
923f08ff AM |
2692 | symname = q->symbol.name; |
2693 | if (strcmp (symname + strlen (symname) - 2, ".o") == 0) | |
2694 | { | |
2695 | if (q->symbol.value > low_line_vma) | |
2696 | { | |
2697 | *line_ptr = 0; | |
2698 | line_file_name = NULL; | |
2699 | } | |
2700 | if (q->symbol.value > low_func_vma) | |
2701 | func = NULL; | |
2702 | } | |
2703 | } | |
2704 | break; | |
252b5132 | 2705 | |
923f08ff AM |
2706 | case N_SO: |
2707 | /* If this symbol is less than the offset, but greater than | |
2708 | the line number we have found so far, then we have not | |
2709 | found the right line number. */ | |
2710 | if (q->symbol.value <= offset) | |
2711 | { | |
2712 | if (q->symbol.value > low_line_vma) | |
2713 | { | |
2714 | *line_ptr = 0; | |
2715 | line_file_name = NULL; | |
2716 | } | |
2717 | if (q->symbol.value > low_func_vma) | |
2718 | func = NULL; | |
2719 | } | |
252b5132 | 2720 | |
923f08ff AM |
2721 | main_file_name = current_file_name = q->symbol.name; |
2722 | /* Look ahead to next symbol to check if that too is an N_SO. */ | |
2723 | p++; | |
2724 | if (*p == NULL) | |
c3864421 | 2725 | goto done; |
923f08ff AM |
2726 | q = (aout_symbol_type *) (*p); |
2727 | if (q->type != (int)N_SO) | |
2728 | goto next; | |
2729 | ||
2730 | /* Found a second N_SO First is directory; second is filename. */ | |
2731 | directory_name = current_file_name; | |
2732 | main_file_name = current_file_name = q->symbol.name; | |
2733 | if (obj_textsec (abfd) != section) | |
2734 | goto done; | |
2735 | break; | |
2736 | case N_SOL: | |
2737 | current_file_name = q->symbol.name; | |
2738 | break; | |
252b5132 | 2739 | |
923f08ff | 2740 | case N_SLINE: |
252b5132 | 2741 | |
923f08ff AM |
2742 | case N_DSLINE: |
2743 | case N_BSLINE: | |
2744 | /* We'll keep this if it resolves nearer than the one we have | |
2745 | already. */ | |
2746 | if (q->symbol.value >= low_line_vma | |
2747 | && q->symbol.value <= offset) | |
2748 | { | |
2749 | *line_ptr = q->desc; | |
2750 | low_line_vma = q->symbol.value; | |
2751 | line_file_name = current_file_name; | |
2752 | line_directory_name = directory_name; | |
2753 | } | |
2754 | break; | |
2755 | case N_FUN: | |
2756 | { | |
f7c33884 | 2757 | /* We'll keep this if it is nearer than the one we have already. */ |
923f08ff | 2758 | if (q->symbol.value >= low_func_vma && |
f7c33884 NC |
2759 | q->symbol.value <= offset) |
2760 | { | |
2761 | low_func_vma = q->symbol.value; | |
2762 | func = (asymbol *)q; | |
2763 | } | |
923f08ff AM |
2764 | else if (q->symbol.value > offset) |
2765 | goto done; | |
2766 | } | |
2767 | break; | |
2768 | } | |
252b5132 | 2769 | } |
252b5132 | 2770 | } |
252b5132 RH |
2771 | |
2772 | done: | |
2773 | if (*line_ptr != 0) | |
2774 | { | |
2775 | main_file_name = line_file_name; | |
2776 | directory_name = line_directory_name; | |
2777 | } | |
2778 | ||
2779 | if (main_file_name == NULL | |
5af11cab | 2780 | || IS_ABSOLUTE_PATH (main_file_name) |
252b5132 RH |
2781 | || directory_name == NULL) |
2782 | filelen = 0; | |
2783 | else | |
2784 | filelen = strlen (directory_name) + strlen (main_file_name); | |
f7c33884 | 2785 | |
252b5132 RH |
2786 | if (func == NULL) |
2787 | funclen = 0; | |
2788 | else | |
2789 | funclen = strlen (bfd_asymbol_name (func)); | |
2790 | ||
2791 | if (adata (abfd).line_buf != NULL) | |
2792 | free (adata (abfd).line_buf); | |
f7c33884 | 2793 | |
252b5132 RH |
2794 | if (filelen + funclen == 0) |
2795 | adata (abfd).line_buf = buf = NULL; | |
2796 | else | |
2797 | { | |
a50b1753 | 2798 | buf = (char *) bfd_malloc (filelen + funclen + 3); |
252b5132 RH |
2799 | adata (abfd).line_buf = buf; |
2800 | if (buf == NULL) | |
b34976b6 | 2801 | return FALSE; |
252b5132 RH |
2802 | } |
2803 | ||
2804 | if (main_file_name != NULL) | |
2805 | { | |
5af11cab | 2806 | if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL) |
252b5132 RH |
2807 | *filename_ptr = main_file_name; |
2808 | else | |
2809 | { | |
2810 | sprintf (buf, "%s%s", directory_name, main_file_name); | |
2811 | *filename_ptr = buf; | |
2812 | buf += filelen + 1; | |
2813 | } | |
2814 | } | |
2815 | ||
2816 | if (func) | |
2817 | { | |
2818 | const char *function = func->name; | |
dc810e39 | 2819 | char *colon; |
252b5132 RH |
2820 | |
2821 | /* The caller expects a symbol name. We actually have a | |
2822 | function name, without the leading underscore. Put the | |
2823 | underscore back in, so that the caller gets a symbol name. */ | |
2824 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
2825 | strcpy (buf, function); | |
2826 | else | |
2827 | { | |
2828 | buf[0] = bfd_get_symbol_leading_char (abfd); | |
2829 | strcpy (buf + 1, function); | |
2830 | } | |
f7c33884 | 2831 | /* Have to remove : stuff. */ |
dc810e39 AM |
2832 | colon = strchr (buf, ':'); |
2833 | if (colon != NULL) | |
2834 | *colon = '\0'; | |
252b5132 RH |
2835 | *functionname_ptr = buf; |
2836 | } | |
2837 | ||
b34976b6 | 2838 | return TRUE; |
252b5132 RH |
2839 | } |
2840 | ||
252b5132 | 2841 | int |
a6b96beb AM |
2842 | NAME (aout, sizeof_headers) (bfd *abfd, |
2843 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
252b5132 | 2844 | { |
923f08ff | 2845 | return adata (abfd).exec_bytes_size; |
252b5132 RH |
2846 | } |
2847 | ||
2848 | /* Free all information we have cached for this BFD. We can always | |
2849 | read it again later if we need it. */ | |
2850 | ||
b34976b6 | 2851 | bfd_boolean |
116c20d2 | 2852 | NAME (aout, bfd_free_cached_info) (bfd *abfd) |
252b5132 RH |
2853 | { |
2854 | asection *o; | |
2855 | ||
920581c5 L |
2856 | if (bfd_get_format (abfd) != bfd_object |
2857 | || abfd->tdata.aout_data == NULL) | |
b34976b6 | 2858 | return TRUE; |
252b5132 RH |
2859 | |
2860 | #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } | |
2861 | BFCI_FREE (obj_aout_symbols (abfd)); | |
2862 | #ifdef USE_MMAP | |
2863 | obj_aout_external_syms (abfd) = 0; | |
2864 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2865 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2866 | obj_aout_external_strings (abfd) = 0; | |
2867 | #else | |
2868 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2869 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
2870 | #endif | |
116c20d2 | 2871 | for (o = abfd->sections; o != NULL; o = o->next) |
252b5132 RH |
2872 | BFCI_FREE (o->relocation); |
2873 | #undef BFCI_FREE | |
2874 | ||
b34976b6 | 2875 | return TRUE; |
252b5132 RH |
2876 | } |
2877 | \f | |
2878 | /* a.out link code. */ | |
2879 | ||
252b5132 RH |
2880 | /* Routine to create an entry in an a.out link hash table. */ |
2881 | ||
2882 | struct bfd_hash_entry * | |
116c20d2 NC |
2883 | NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry, |
2884 | struct bfd_hash_table *table, | |
2885 | const char *string) | |
252b5132 RH |
2886 | { |
2887 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2888 | ||
2889 | /* Allocate the structure if it has not already been allocated by a | |
2890 | subclass. */ | |
116c20d2 | 2891 | if (ret == NULL) |
a50b1753 NC |
2892 | ret = (struct aout_link_hash_entry *) bfd_hash_allocate (table, |
2893 | sizeof (* ret)); | |
116c20d2 NC |
2894 | if (ret == NULL) |
2895 | return NULL; | |
252b5132 RH |
2896 | |
2897 | /* Call the allocation method of the superclass. */ | |
2898 | ret = ((struct aout_link_hash_entry *) | |
2899 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2900 | table, string)); | |
2901 | if (ret) | |
2902 | { | |
2903 | /* Set local fields. */ | |
b34976b6 | 2904 | ret->written = FALSE; |
252b5132 RH |
2905 | ret->indx = -1; |
2906 | } | |
2907 | ||
2908 | return (struct bfd_hash_entry *) ret; | |
2909 | } | |
2910 | ||
2911 | /* Initialize an a.out link hash table. */ | |
2912 | ||
b34976b6 | 2913 | bfd_boolean |
116c20d2 NC |
2914 | NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table, |
2915 | bfd *abfd, | |
2916 | struct bfd_hash_entry *(*newfunc) | |
2917 | (struct bfd_hash_entry *, struct bfd_hash_table *, | |
66eb6687 AM |
2918 | const char *), |
2919 | unsigned int entsize) | |
252b5132 | 2920 | { |
66eb6687 | 2921 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
252b5132 RH |
2922 | } |
2923 | ||
2924 | /* Create an a.out link hash table. */ | |
2925 | ||
2926 | struct bfd_link_hash_table * | |
116c20d2 | 2927 | NAME (aout, link_hash_table_create) (bfd *abfd) |
252b5132 RH |
2928 | { |
2929 | struct aout_link_hash_table *ret; | |
116c20d2 | 2930 | bfd_size_type amt = sizeof (* ret); |
252b5132 | 2931 | |
a50b1753 | 2932 | ret = (struct aout_link_hash_table *) bfd_malloc (amt); |
252b5132 | 2933 | if (ret == NULL) |
116c20d2 | 2934 | return NULL; |
5ed6aba4 | 2935 | |
66eb6687 AM |
2936 | if (!NAME (aout, link_hash_table_init) (ret, abfd, |
2937 | NAME (aout, link_hash_newfunc), | |
2938 | sizeof (struct aout_link_hash_entry))) | |
252b5132 RH |
2939 | { |
2940 | free (ret); | |
116c20d2 | 2941 | return NULL; |
252b5132 RH |
2942 | } |
2943 | return &ret->root; | |
2944 | } | |
2945 | ||
116c20d2 | 2946 | /* Add all symbols from an object file to the hash table. */ |
252b5132 | 2947 | |
b34976b6 | 2948 | static bfd_boolean |
116c20d2 | 2949 | aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 2950 | { |
116c20d2 NC |
2951 | bfd_boolean (*add_one_symbol) |
2952 | (struct bfd_link_info *, bfd *, const char *, flagword, asection *, | |
2953 | bfd_vma, const char *, bfd_boolean, bfd_boolean, | |
2954 | struct bfd_link_hash_entry **); | |
2955 | struct external_nlist *syms; | |
2956 | bfd_size_type sym_count; | |
2957 | char *strings; | |
2958 | bfd_boolean copy; | |
2959 | struct aout_link_hash_entry **sym_hash; | |
2960 | struct external_nlist *p; | |
2961 | struct external_nlist *pend; | |
2962 | bfd_size_type amt; | |
252b5132 | 2963 | |
116c20d2 NC |
2964 | syms = obj_aout_external_syms (abfd); |
2965 | sym_count = obj_aout_external_sym_count (abfd); | |
2966 | strings = obj_aout_external_strings (abfd); | |
2967 | if (info->keep_memory) | |
2968 | copy = FALSE; | |
2969 | else | |
2970 | copy = TRUE; | |
252b5132 | 2971 | |
116c20d2 | 2972 | if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) |
252b5132 | 2973 | { |
116c20d2 NC |
2974 | if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) |
2975 | (abfd, info, &syms, &sym_count, &strings))) | |
b34976b6 | 2976 | return FALSE; |
252b5132 RH |
2977 | } |
2978 | ||
20c6e70e MS |
2979 | if (sym_count == 0) |
2980 | return TRUE; /* Nothing to do. */ | |
2981 | ||
116c20d2 NC |
2982 | /* We keep a list of the linker hash table entries that correspond |
2983 | to particular symbols. We could just look them up in the hash | |
2984 | table, but keeping the list is more efficient. Perhaps this | |
2985 | should be conditional on info->keep_memory. */ | |
2986 | amt = sym_count * sizeof (struct aout_link_hash_entry *); | |
a50b1753 | 2987 | sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt); |
20c6e70e | 2988 | if (sym_hash == NULL) |
116c20d2 NC |
2989 | return FALSE; |
2990 | obj_aout_sym_hashes (abfd) = sym_hash; | |
252b5132 | 2991 | |
116c20d2 NC |
2992 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; |
2993 | if (add_one_symbol == NULL) | |
2994 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
252b5132 | 2995 | |
116c20d2 NC |
2996 | p = syms; |
2997 | pend = p + sym_count; | |
2998 | for (; p < pend; p++, sym_hash++) | |
252b5132 | 2999 | { |
116c20d2 | 3000 | int type; |
252b5132 | 3001 | const char *name; |
116c20d2 NC |
3002 | bfd_vma value; |
3003 | asection *section; | |
3004 | flagword flags; | |
3005 | const char *string; | |
252b5132 | 3006 | |
116c20d2 | 3007 | *sym_hash = NULL; |
252b5132 | 3008 | |
116c20d2 | 3009 | type = H_GET_8 (abfd, p->e_type); |
252b5132 | 3010 | |
116c20d2 NC |
3011 | /* Ignore debugging symbols. */ |
3012 | if ((type & N_STAB) != 0) | |
3013 | continue; | |
252b5132 | 3014 | |
116c20d2 NC |
3015 | name = strings + GET_WORD (abfd, p->e_strx); |
3016 | value = GET_WORD (abfd, p->e_value); | |
3017 | flags = BSF_GLOBAL; | |
3018 | string = NULL; | |
3019 | switch (type) | |
252b5132 | 3020 | { |
116c20d2 NC |
3021 | default: |
3022 | abort (); | |
f7c33884 | 3023 | |
116c20d2 NC |
3024 | case N_UNDF: |
3025 | case N_ABS: | |
3026 | case N_TEXT: | |
3027 | case N_DATA: | |
3028 | case N_BSS: | |
3029 | case N_FN_SEQ: | |
3030 | case N_COMM: | |
3031 | case N_SETV: | |
3032 | case N_FN: | |
3033 | /* Ignore symbols that are not externally visible. */ | |
3034 | continue; | |
3035 | case N_INDR: | |
3036 | /* Ignore local indirect symbol. */ | |
3037 | ++p; | |
3038 | ++sym_hash; | |
3039 | continue; | |
252b5132 | 3040 | |
116c20d2 NC |
3041 | case N_UNDF | N_EXT: |
3042 | if (value == 0) | |
f7c33884 | 3043 | { |
116c20d2 NC |
3044 | section = bfd_und_section_ptr; |
3045 | flags = 0; | |
252b5132 RH |
3046 | } |
3047 | else | |
3048 | section = bfd_com_section_ptr; | |
3049 | break; | |
3050 | case N_ABS | N_EXT: | |
3051 | section = bfd_abs_section_ptr; | |
3052 | break; | |
3053 | case N_TEXT | N_EXT: | |
3054 | section = obj_textsec (abfd); | |
3055 | value -= bfd_get_section_vma (abfd, section); | |
3056 | break; | |
3057 | case N_DATA | N_EXT: | |
3058 | case N_SETV | N_EXT: | |
3059 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
3060 | translate_from_native_sym_flags. */ | |
3061 | section = obj_datasec (abfd); | |
3062 | value -= bfd_get_section_vma (abfd, section); | |
3063 | break; | |
3064 | case N_BSS | N_EXT: | |
3065 | section = obj_bsssec (abfd); | |
3066 | value -= bfd_get_section_vma (abfd, section); | |
3067 | break; | |
3068 | case N_INDR | N_EXT: | |
3069 | /* An indirect symbol. The next symbol is the symbol | |
3070 | which this one really is. */ | |
3071 | BFD_ASSERT (p + 1 < pend); | |
3072 | ++p; | |
3073 | string = strings + GET_WORD (abfd, p->e_strx); | |
3074 | section = bfd_ind_section_ptr; | |
3075 | flags |= BSF_INDIRECT; | |
3076 | break; | |
3077 | case N_COMM | N_EXT: | |
3078 | section = bfd_com_section_ptr; | |
3079 | break; | |
3080 | case N_SETA: case N_SETA | N_EXT: | |
3081 | section = bfd_abs_section_ptr; | |
3082 | flags |= BSF_CONSTRUCTOR; | |
3083 | break; | |
3084 | case N_SETT: case N_SETT | N_EXT: | |
3085 | section = obj_textsec (abfd); | |
3086 | flags |= BSF_CONSTRUCTOR; | |
3087 | value -= bfd_get_section_vma (abfd, section); | |
3088 | break; | |
3089 | case N_SETD: case N_SETD | N_EXT: | |
3090 | section = obj_datasec (abfd); | |
3091 | flags |= BSF_CONSTRUCTOR; | |
3092 | value -= bfd_get_section_vma (abfd, section); | |
3093 | break; | |
3094 | case N_SETB: case N_SETB | N_EXT: | |
3095 | section = obj_bsssec (abfd); | |
3096 | flags |= BSF_CONSTRUCTOR; | |
3097 | value -= bfd_get_section_vma (abfd, section); | |
3098 | break; | |
3099 | case N_WARNING: | |
3100 | /* A warning symbol. The next symbol is the one to warn | |
9f400ee9 HPN |
3101 | about. If there is no next symbol, just look away. */ |
3102 | if (p + 1 >= pend) | |
3103 | return TRUE; | |
252b5132 RH |
3104 | ++p; |
3105 | string = name; | |
3106 | name = strings + GET_WORD (abfd, p->e_strx); | |
3107 | section = bfd_und_section_ptr; | |
3108 | flags |= BSF_WARNING; | |
3109 | break; | |
3110 | case N_WEAKU: | |
3111 | section = bfd_und_section_ptr; | |
3112 | flags = BSF_WEAK; | |
3113 | break; | |
3114 | case N_WEAKA: | |
3115 | section = bfd_abs_section_ptr; | |
3116 | flags = BSF_WEAK; | |
3117 | break; | |
3118 | case N_WEAKT: | |
3119 | section = obj_textsec (abfd); | |
3120 | value -= bfd_get_section_vma (abfd, section); | |
3121 | flags = BSF_WEAK; | |
3122 | break; | |
3123 | case N_WEAKD: | |
3124 | section = obj_datasec (abfd); | |
3125 | value -= bfd_get_section_vma (abfd, section); | |
3126 | flags = BSF_WEAK; | |
3127 | break; | |
3128 | case N_WEAKB: | |
3129 | section = obj_bsssec (abfd); | |
3130 | value -= bfd_get_section_vma (abfd, section); | |
3131 | flags = BSF_WEAK; | |
3132 | break; | |
3133 | } | |
3134 | ||
3135 | if (! ((*add_one_symbol) | |
b34976b6 | 3136 | (info, abfd, name, flags, section, value, string, copy, FALSE, |
252b5132 | 3137 | (struct bfd_link_hash_entry **) sym_hash))) |
b34976b6 | 3138 | return FALSE; |
252b5132 RH |
3139 | |
3140 | /* Restrict the maximum alignment of a common symbol based on | |
3141 | the architecture, since a.out has no way to represent | |
3142 | alignment requirements of a section in a .o file. FIXME: | |
3143 | This isn't quite right: it should use the architecture of the | |
3144 | output file, not the input files. */ | |
3145 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
3146 | && ((*sym_hash)->root.u.c.p->alignment_power > | |
3147 | bfd_get_arch_info (abfd)->section_align_power)) | |
3148 | (*sym_hash)->root.u.c.p->alignment_power = | |
3149 | bfd_get_arch_info (abfd)->section_align_power; | |
3150 | ||
3151 | /* If this is a set symbol, and we are not building sets, then | |
3152 | it is possible for the hash entry to not have been set. In | |
3153 | such a case, treat the symbol as not globally defined. */ | |
3154 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
3155 | { | |
3156 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
3157 | *sym_hash = NULL; | |
3158 | } | |
3159 | ||
3160 | if (type == (N_INDR | N_EXT) || type == N_WARNING) | |
3161 | ++sym_hash; | |
3162 | } | |
3163 | ||
b34976b6 | 3164 | return TRUE; |
252b5132 | 3165 | } |
252b5132 | 3166 | |
116c20d2 NC |
3167 | /* Free up the internal symbols read from an a.out file. */ |
3168 | ||
3169 | static bfd_boolean | |
3170 | aout_link_free_symbols (bfd *abfd) | |
252b5132 | 3171 | { |
116c20d2 NC |
3172 | if (obj_aout_external_syms (abfd) != NULL) |
3173 | { | |
3174 | #ifdef USE_MMAP | |
3175 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
3176 | #else | |
3177 | free ((void *) obj_aout_external_syms (abfd)); | |
3178 | #endif | |
3179 | obj_aout_external_syms (abfd) = NULL; | |
3180 | } | |
3181 | if (obj_aout_external_strings (abfd) != NULL) | |
3182 | { | |
3183 | #ifdef USE_MMAP | |
3184 | bfd_free_window (&obj_aout_string_window (abfd)); | |
3185 | #else | |
3186 | free ((void *) obj_aout_external_strings (abfd)); | |
3187 | #endif | |
3188 | obj_aout_external_strings (abfd) = NULL; | |
3189 | } | |
3190 | return TRUE; | |
3191 | } | |
252b5132 | 3192 | |
116c20d2 | 3193 | /* Add symbols from an a.out object file. */ |
252b5132 | 3194 | |
116c20d2 NC |
3195 | static bfd_boolean |
3196 | aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) | |
252b5132 | 3197 | { |
116c20d2 NC |
3198 | if (! aout_get_external_symbols (abfd)) |
3199 | return FALSE; | |
3200 | if (! aout_link_add_symbols (abfd, info)) | |
3201 | return FALSE; | |
3202 | if (! info->keep_memory) | |
3203 | { | |
3204 | if (! aout_link_free_symbols (abfd)) | |
3205 | return FALSE; | |
3206 | } | |
3207 | return TRUE; | |
3208 | } | |
252b5132 | 3209 | |
116c20d2 NC |
3210 | /* Look through the internal symbols to see if this object file should |
3211 | be included in the link. We should include this object file if it | |
3212 | defines any symbols which are currently undefined. If this object | |
3213 | file defines a common symbol, then we may adjust the size of the | |
3214 | known symbol but we do not include the object file in the link | |
3215 | (unless there is some other reason to include it). */ | |
252b5132 | 3216 | |
116c20d2 NC |
3217 | static bfd_boolean |
3218 | aout_link_check_ar_symbols (bfd *abfd, | |
3219 | struct bfd_link_info *info, | |
5d3236ee DK |
3220 | bfd_boolean *pneeded, |
3221 | bfd **subsbfd) | |
252b5132 | 3222 | { |
116c20d2 NC |
3223 | struct external_nlist *p; |
3224 | struct external_nlist *pend; | |
3225 | char *strings; | |
252b5132 | 3226 | |
116c20d2 | 3227 | *pneeded = FALSE; |
252b5132 | 3228 | |
116c20d2 NC |
3229 | /* Look through all the symbols. */ |
3230 | p = obj_aout_external_syms (abfd); | |
3231 | pend = p + obj_aout_external_sym_count (abfd); | |
3232 | strings = obj_aout_external_strings (abfd); | |
3233 | for (; p < pend; p++) | |
3234 | { | |
3235 | int type = H_GET_8 (abfd, p->e_type); | |
3236 | const char *name; | |
3237 | struct bfd_link_hash_entry *h; | |
252b5132 | 3238 | |
116c20d2 NC |
3239 | /* Ignore symbols that are not externally visible. This is an |
3240 | optimization only, as we check the type more thoroughly | |
3241 | below. */ | |
3242 | if (((type & N_EXT) == 0 | |
3243 | || (type & N_STAB) != 0 | |
3244 | || type == N_FN) | |
3245 | && type != N_WEAKA | |
3246 | && type != N_WEAKT | |
3247 | && type != N_WEAKD | |
3248 | && type != N_WEAKB) | |
3249 | { | |
3250 | if (type == N_WARNING | |
3251 | || type == N_INDR) | |
3252 | ++p; | |
3253 | continue; | |
3254 | } | |
3255 | ||
3256 | name = strings + GET_WORD (abfd, p->e_strx); | |
3257 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); | |
3258 | ||
3259 | /* We are only interested in symbols that are currently | |
3260 | undefined or common. */ | |
3261 | if (h == NULL | |
3262 | || (h->type != bfd_link_hash_undefined | |
3263 | && h->type != bfd_link_hash_common)) | |
3264 | { | |
3265 | if (type == (N_INDR | N_EXT)) | |
3266 | ++p; | |
3267 | continue; | |
3268 | } | |
3269 | ||
3270 | if (type == (N_TEXT | N_EXT) | |
3271 | || type == (N_DATA | N_EXT) | |
3272 | || type == (N_BSS | N_EXT) | |
3273 | || type == (N_ABS | N_EXT) | |
3274 | || type == (N_INDR | N_EXT)) | |
3275 | { | |
3276 | /* This object file defines this symbol. We must link it | |
3277 | in. This is true regardless of whether the current | |
3278 | definition of the symbol is undefined or common. | |
3279 | ||
3280 | If the current definition is common, we have a case in | |
3281 | which we have already seen an object file including: | |
3282 | int a; | |
3283 | and this object file from the archive includes: | |
3284 | int a = 5; | |
3285 | In such a case, whether to include this object is target | |
3286 | dependant for backward compatibility. | |
3287 | ||
3288 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
3289 | element if the symbol is defined in the .data section, | |
3290 | but not if it is defined in the .text section. That | |
3291 | seems a bit crazy to me, and it has not been implemented | |
3292 | yet. However, it might be correct. */ | |
3293 | if (h->type == bfd_link_hash_common) | |
3294 | { | |
3295 | int skip = 0; | |
3296 | ||
f88dc410 | 3297 | switch (info->common_skip_ar_symbols) |
116c20d2 NC |
3298 | { |
3299 | case bfd_link_common_skip_text: | |
3300 | skip = (type == (N_TEXT | N_EXT)); | |
3301 | break; | |
3302 | case bfd_link_common_skip_data: | |
3303 | skip = (type == (N_DATA | N_EXT)); | |
3304 | break; | |
3305 | default: | |
3306 | case bfd_link_common_skip_all: | |
3307 | skip = 1; | |
3308 | break; | |
3309 | } | |
3310 | ||
3311 | if (skip) | |
3312 | continue; | |
3313 | } | |
3314 | ||
0e144ba7 AM |
3315 | if (!(*info->callbacks |
3316 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3317 | return FALSE; |
3318 | *pneeded = TRUE; | |
3319 | return TRUE; | |
3320 | } | |
3321 | ||
3322 | if (type == (N_UNDF | N_EXT)) | |
3323 | { | |
3324 | bfd_vma value; | |
3325 | ||
3326 | value = GET_WORD (abfd, p->e_value); | |
3327 | if (value != 0) | |
3328 | { | |
3329 | /* This symbol is common in the object from the archive | |
3330 | file. */ | |
3331 | if (h->type == bfd_link_hash_undefined) | |
3332 | { | |
3333 | bfd *symbfd; | |
3334 | unsigned int power; | |
3335 | ||
3336 | symbfd = h->u.undef.abfd; | |
3337 | if (symbfd == NULL) | |
3338 | { | |
3339 | /* This symbol was created as undefined from | |
3340 | outside BFD. We assume that we should link | |
3341 | in the object file. This is done for the -u | |
3342 | option in the linker. */ | |
0e144ba7 AM |
3343 | if (!(*info->callbacks |
3344 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3345 | return FALSE; |
3346 | *pneeded = TRUE; | |
3347 | return TRUE; | |
3348 | } | |
3349 | /* Turn the current link symbol into a common | |
3350 | symbol. It is already on the undefs list. */ | |
3351 | h->type = bfd_link_hash_common; | |
a50b1753 | 3352 | h->u.c.p = (struct bfd_link_hash_common_entry *) |
0e144ba7 AM |
3353 | bfd_hash_allocate (&info->hash->table, |
3354 | sizeof (struct bfd_link_hash_common_entry)); | |
116c20d2 NC |
3355 | if (h->u.c.p == NULL) |
3356 | return FALSE; | |
3357 | ||
3358 | h->u.c.size = value; | |
3359 | ||
3360 | /* FIXME: This isn't quite right. The maximum | |
3361 | alignment of a common symbol should be set by the | |
3362 | architecture of the output file, not of the input | |
3363 | file. */ | |
3364 | power = bfd_log2 (value); | |
3365 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
3366 | power = bfd_get_arch_info (abfd)->section_align_power; | |
3367 | h->u.c.p->alignment_power = power; | |
3368 | ||
3369 | h->u.c.p->section = bfd_make_section_old_way (symbfd, | |
3370 | "COMMON"); | |
3371 | } | |
3372 | else | |
3373 | { | |
3374 | /* Adjust the size of the common symbol if | |
3375 | necessary. */ | |
3376 | if (value > h->u.c.size) | |
3377 | h->u.c.size = value; | |
3378 | } | |
3379 | } | |
3380 | } | |
3381 | ||
3382 | if (type == N_WEAKA | |
3383 | || type == N_WEAKT | |
3384 | || type == N_WEAKD | |
3385 | || type == N_WEAKB) | |
3386 | { | |
3387 | /* This symbol is weak but defined. We must pull it in if | |
3388 | the current link symbol is undefined, but we don't want | |
3389 | it if the current link symbol is common. */ | |
3390 | if (h->type == bfd_link_hash_undefined) | |
3391 | { | |
0e144ba7 AM |
3392 | if (!(*info->callbacks |
3393 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3394 | return FALSE; |
3395 | *pneeded = TRUE; | |
3396 | return TRUE; | |
3397 | } | |
3398 | } | |
3399 | } | |
3400 | ||
3401 | /* We do not need this object file. */ | |
3402 | return TRUE; | |
3403 | } | |
3404 | /* Check a single archive element to see if we need to include it in | |
3405 | the link. *PNEEDED is set according to whether this element is | |
3406 | needed in the link or not. This is called from | |
3407 | _bfd_generic_link_add_archive_symbols. */ | |
3408 | ||
3409 | static bfd_boolean | |
3410 | aout_link_check_archive_element (bfd *abfd, | |
3411 | struct bfd_link_info *info, | |
13e570f8 AM |
3412 | struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED, |
3413 | const char *name ATTRIBUTE_UNUSED, | |
116c20d2 NC |
3414 | bfd_boolean *pneeded) |
3415 | { | |
0e144ba7 AM |
3416 | bfd *oldbfd; |
3417 | bfd_boolean needed; | |
5d3236ee | 3418 | |
0e144ba7 | 3419 | if (!aout_get_external_symbols (abfd)) |
116c20d2 NC |
3420 | return FALSE; |
3421 | ||
0e144ba7 AM |
3422 | oldbfd = abfd; |
3423 | if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd)) | |
116c20d2 NC |
3424 | return FALSE; |
3425 | ||
0e144ba7 AM |
3426 | needed = *pneeded; |
3427 | if (needed) | |
116c20d2 | 3428 | { |
5d3236ee DK |
3429 | /* Potentially, the add_archive_element hook may have set a |
3430 | substitute BFD for us. */ | |
0e144ba7 AM |
3431 | if (abfd != oldbfd) |
3432 | { | |
3433 | if (!info->keep_memory | |
3434 | && !aout_link_free_symbols (oldbfd)) | |
3435 | return FALSE; | |
3436 | if (!aout_get_external_symbols (abfd)) | |
3437 | return FALSE; | |
3438 | } | |
3439 | if (!aout_link_add_symbols (abfd, info)) | |
116c20d2 NC |
3440 | return FALSE; |
3441 | } | |
3442 | ||
0e144ba7 | 3443 | if (!info->keep_memory || !needed) |
116c20d2 | 3444 | { |
0e144ba7 | 3445 | if (!aout_link_free_symbols (abfd)) |
116c20d2 NC |
3446 | return FALSE; |
3447 | } | |
3448 | ||
3449 | return TRUE; | |
3450 | } | |
3451 | ||
3452 | /* Given an a.out BFD, add symbols to the global hash table as | |
3453 | appropriate. */ | |
3454 | ||
3455 | bfd_boolean | |
3456 | NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info) | |
3457 | { | |
3458 | switch (bfd_get_format (abfd)) | |
3459 | { | |
3460 | case bfd_object: | |
3461 | return aout_link_add_object_symbols (abfd, info); | |
3462 | case bfd_archive: | |
3463 | return _bfd_generic_link_add_archive_symbols | |
3464 | (abfd, info, aout_link_check_archive_element); | |
3465 | default: | |
3466 | bfd_set_error (bfd_error_wrong_format); | |
3467 | return FALSE; | |
3468 | } | |
3469 | } | |
3470 | \f | |
3471 | /* A hash table used for header files with N_BINCL entries. */ | |
3472 | ||
3473 | struct aout_link_includes_table | |
3474 | { | |
3475 | struct bfd_hash_table root; | |
3476 | }; | |
3477 | ||
3478 | /* A linked list of totals that we have found for a particular header | |
3479 | file. */ | |
3480 | ||
3481 | struct aout_link_includes_totals | |
3482 | { | |
3483 | struct aout_link_includes_totals *next; | |
3484 | bfd_vma total; | |
3485 | }; | |
3486 | ||
3487 | /* An entry in the header file hash table. */ | |
3488 | ||
3489 | struct aout_link_includes_entry | |
3490 | { | |
3491 | struct bfd_hash_entry root; | |
3492 | /* List of totals we have found for this file. */ | |
3493 | struct aout_link_includes_totals *totals; | |
3494 | }; | |
3495 | ||
3496 | /* Look up an entry in an the header file hash table. */ | |
3497 | ||
3498 | #define aout_link_includes_lookup(table, string, create, copy) \ | |
3499 | ((struct aout_link_includes_entry *) \ | |
3500 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
3501 | ||
3502 | /* During the final link step we need to pass around a bunch of | |
3503 | information, so we do it in an instance of this structure. */ | |
3504 | ||
3505 | struct aout_final_link_info | |
3506 | { | |
3507 | /* General link information. */ | |
3508 | struct bfd_link_info *info; | |
3509 | /* Output bfd. */ | |
252b5132 RH |
3510 | bfd *output_bfd; |
3511 | /* Reloc file positions. */ | |
3512 | file_ptr treloff, dreloff; | |
3513 | /* File position of symbols. */ | |
3514 | file_ptr symoff; | |
3515 | /* String table. */ | |
3516 | struct bfd_strtab_hash *strtab; | |
3517 | /* Header file hash table. */ | |
3518 | struct aout_link_includes_table includes; | |
3519 | /* A buffer large enough to hold the contents of any section. */ | |
3520 | bfd_byte *contents; | |
3521 | /* A buffer large enough to hold the relocs of any section. */ | |
116c20d2 | 3522 | void * relocs; |
252b5132 RH |
3523 | /* A buffer large enough to hold the symbol map of any input BFD. */ |
3524 | int *symbol_map; | |
3525 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
3526 | struct external_nlist *output_syms; | |
3527 | }; | |
3528 | ||
252b5132 RH |
3529 | /* The function to create a new entry in the header file hash table. */ |
3530 | ||
3531 | static struct bfd_hash_entry * | |
116c20d2 NC |
3532 | aout_link_includes_newfunc (struct bfd_hash_entry *entry, |
3533 | struct bfd_hash_table *table, | |
3534 | const char *string) | |
252b5132 RH |
3535 | { |
3536 | struct aout_link_includes_entry *ret = | |
3537 | (struct aout_link_includes_entry *) entry; | |
3538 | ||
3539 | /* Allocate the structure if it has not already been allocated by a | |
3540 | subclass. */ | |
116c20d2 | 3541 | if (ret == NULL) |
a50b1753 NC |
3542 | ret = (struct aout_link_includes_entry *) |
3543 | bfd_hash_allocate (table, sizeof (* ret)); | |
116c20d2 NC |
3544 | if (ret == NULL) |
3545 | return NULL; | |
252b5132 RH |
3546 | |
3547 | /* Call the allocation method of the superclass. */ | |
3548 | ret = ((struct aout_link_includes_entry *) | |
3549 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
3550 | if (ret) | |
3551 | { | |
3552 | /* Set local fields. */ | |
3553 | ret->totals = NULL; | |
3554 | } | |
3555 | ||
3556 | return (struct bfd_hash_entry *) ret; | |
3557 | } | |
3558 | ||
116c20d2 NC |
3559 | /* Write out a symbol that was not associated with an a.out input |
3560 | object. */ | |
252b5132 | 3561 | |
116c20d2 | 3562 | static bfd_boolean |
7686d77d | 3563 | aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data) |
252b5132 | 3564 | { |
7686d77d | 3565 | struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh; |
57402f1e | 3566 | struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data; |
116c20d2 NC |
3567 | bfd *output_bfd; |
3568 | int type; | |
3569 | bfd_vma val; | |
3570 | struct external_nlist outsym; | |
3571 | bfd_size_type indx; | |
3572 | bfd_size_type amt; | |
252b5132 | 3573 | |
116c20d2 NC |
3574 | if (h->root.type == bfd_link_hash_warning) |
3575 | { | |
3576 | h = (struct aout_link_hash_entry *) h->root.u.i.link; | |
3577 | if (h->root.type == bfd_link_hash_new) | |
3578 | return TRUE; | |
3579 | } | |
252b5132 | 3580 | |
57402f1e | 3581 | output_bfd = flaginfo->output_bfd; |
252b5132 | 3582 | |
116c20d2 | 3583 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) |
252b5132 | 3584 | { |
116c20d2 | 3585 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) |
57402f1e | 3586 | (output_bfd, flaginfo->info, h))) |
252b5132 | 3587 | { |
116c20d2 NC |
3588 | /* FIXME: No way to handle errors. */ |
3589 | abort (); | |
252b5132 | 3590 | } |
116c20d2 | 3591 | } |
252b5132 | 3592 | |
116c20d2 NC |
3593 | if (h->written) |
3594 | return TRUE; | |
252b5132 | 3595 | |
116c20d2 | 3596 | h->written = TRUE; |
252b5132 | 3597 | |
116c20d2 NC |
3598 | /* An indx of -2 means the symbol must be written. */ |
3599 | if (h->indx != -2 | |
57402f1e NC |
3600 | && (flaginfo->info->strip == strip_all |
3601 | || (flaginfo->info->strip == strip_some | |
3602 | && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string, | |
116c20d2 NC |
3603 | FALSE, FALSE) == NULL))) |
3604 | return TRUE; | |
252b5132 | 3605 | |
116c20d2 | 3606 | switch (h->root.type) |
252b5132 | 3607 | { |
116c20d2 NC |
3608 | default: |
3609 | case bfd_link_hash_warning: | |
3610 | abort (); | |
3611 | /* Avoid variable not initialized warnings. */ | |
3612 | return TRUE; | |
3613 | case bfd_link_hash_new: | |
3614 | /* This can happen for set symbols when sets are not being | |
3615 | built. */ | |
3616 | return TRUE; | |
3617 | case bfd_link_hash_undefined: | |
3618 | type = N_UNDF | N_EXT; | |
3619 | val = 0; | |
3620 | break; | |
3621 | case bfd_link_hash_defined: | |
3622 | case bfd_link_hash_defweak: | |
3623 | { | |
3624 | asection *sec; | |
252b5132 | 3625 | |
116c20d2 NC |
3626 | sec = h->root.u.def.section->output_section; |
3627 | BFD_ASSERT (bfd_is_abs_section (sec) | |
3628 | || sec->owner == output_bfd); | |
3629 | if (sec == obj_textsec (output_bfd)) | |
3630 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; | |
3631 | else if (sec == obj_datasec (output_bfd)) | |
3632 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; | |
3633 | else if (sec == obj_bsssec (output_bfd)) | |
3634 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; | |
3635 | else | |
3636 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; | |
3637 | type |= N_EXT; | |
3638 | val = (h->root.u.def.value | |
3639 | + sec->vma | |
3640 | + h->root.u.def.section->output_offset); | |
3641 | } | |
3642 | break; | |
3643 | case bfd_link_hash_common: | |
3644 | type = N_UNDF | N_EXT; | |
3645 | val = h->root.u.c.size; | |
3646 | break; | |
3647 | case bfd_link_hash_undefweak: | |
3648 | type = N_WEAKU; | |
3649 | val = 0; | |
c38eb2a6 | 3650 | break; |
116c20d2 NC |
3651 | case bfd_link_hash_indirect: |
3652 | /* We ignore these symbols, since the indirected symbol is | |
3653 | already in the hash table. */ | |
3654 | return TRUE; | |
3655 | } | |
252b5132 | 3656 | |
116c20d2 NC |
3657 | H_PUT_8 (output_bfd, type, outsym.e_type); |
3658 | H_PUT_8 (output_bfd, 0, outsym.e_other); | |
3659 | H_PUT_16 (output_bfd, 0, outsym.e_desc); | |
57402f1e | 3660 | indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string, |
116c20d2 NC |
3661 | FALSE); |
3662 | if (indx == - (bfd_size_type) 1) | |
3663 | /* FIXME: No way to handle errors. */ | |
3664 | abort (); | |
252b5132 | 3665 | |
116c20d2 NC |
3666 | PUT_WORD (output_bfd, indx, outsym.e_strx); |
3667 | PUT_WORD (output_bfd, val, outsym.e_value); | |
252b5132 | 3668 | |
116c20d2 | 3669 | amt = EXTERNAL_NLIST_SIZE; |
57402f1e | 3670 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0 |
116c20d2 NC |
3671 | || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt) |
3672 | /* FIXME: No way to handle errors. */ | |
3673 | abort (); | |
252b5132 | 3674 | |
57402f1e | 3675 | flaginfo->symoff += EXTERNAL_NLIST_SIZE; |
116c20d2 NC |
3676 | h->indx = obj_aout_external_sym_count (output_bfd); |
3677 | ++obj_aout_external_sym_count (output_bfd); | |
252b5132 | 3678 | |
116c20d2 NC |
3679 | return TRUE; |
3680 | } | |
252b5132 | 3681 | |
116c20d2 | 3682 | /* Handle a link order which is supposed to generate a reloc. */ |
252b5132 | 3683 | |
116c20d2 | 3684 | static bfd_boolean |
57402f1e | 3685 | aout_link_reloc_link_order (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3686 | asection *o, |
3687 | struct bfd_link_order *p) | |
3688 | { | |
3689 | struct bfd_link_order_reloc *pr; | |
3690 | int r_index; | |
3691 | int r_extern; | |
3692 | reloc_howto_type *howto; | |
3693 | file_ptr *reloff_ptr = NULL; | |
3694 | struct reloc_std_external srel; | |
3695 | struct reloc_ext_external erel; | |
3696 | void * rel_ptr; | |
3697 | bfd_size_type amt; | |
252b5132 | 3698 | |
116c20d2 | 3699 | pr = p->u.reloc.p; |
252b5132 | 3700 | |
116c20d2 NC |
3701 | if (p->type == bfd_section_reloc_link_order) |
3702 | { | |
3703 | r_extern = 0; | |
3704 | if (bfd_is_abs_section (pr->u.section)) | |
3705 | r_index = N_ABS | N_EXT; | |
3706 | else | |
3707 | { | |
57402f1e | 3708 | BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd); |
116c20d2 NC |
3709 | r_index = pr->u.section->target_index; |
3710 | } | |
3711 | } | |
3712 | else | |
3713 | { | |
3714 | struct aout_link_hash_entry *h; | |
252b5132 | 3715 | |
116c20d2 NC |
3716 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); |
3717 | r_extern = 1; | |
3718 | h = ((struct aout_link_hash_entry *) | |
57402f1e | 3719 | bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info, |
116c20d2 NC |
3720 | pr->u.name, FALSE, FALSE, TRUE)); |
3721 | if (h != NULL | |
3722 | && h->indx >= 0) | |
3723 | r_index = h->indx; | |
3724 | else if (h != NULL) | |
3725 | { | |
3726 | /* We decided to strip this symbol, but it turns out that we | |
3727 | can't. Note that we lose the other and desc information | |
3728 | here. I don't think that will ever matter for a global | |
3729 | symbol. */ | |
3730 | h->indx = -2; | |
3731 | h->written = FALSE; | |
57402f1e | 3732 | if (!aout_link_write_other_symbol (&h->root.root, flaginfo)) |
116c20d2 NC |
3733 | return FALSE; |
3734 | r_index = h->indx; | |
3735 | } | |
3736 | else | |
3737 | { | |
57402f1e NC |
3738 | if (! ((*flaginfo->info->callbacks->unattached_reloc) |
3739 | (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0))) | |
116c20d2 NC |
3740 | return FALSE; |
3741 | r_index = 0; | |
3742 | } | |
3743 | } | |
252b5132 | 3744 | |
57402f1e | 3745 | howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc); |
116c20d2 | 3746 | if (howto == 0) |
252b5132 | 3747 | { |
116c20d2 NC |
3748 | bfd_set_error (bfd_error_bad_value); |
3749 | return FALSE; | |
252b5132 RH |
3750 | } |
3751 | ||
57402f1e NC |
3752 | if (o == obj_textsec (flaginfo->output_bfd)) |
3753 | reloff_ptr = &flaginfo->treloff; | |
3754 | else if (o == obj_datasec (flaginfo->output_bfd)) | |
3755 | reloff_ptr = &flaginfo->dreloff; | |
116c20d2 NC |
3756 | else |
3757 | abort (); | |
3758 | ||
57402f1e | 3759 | if (obj_reloc_entry_size (flaginfo->output_bfd) == RELOC_STD_SIZE) |
252b5132 | 3760 | { |
116c20d2 | 3761 | #ifdef MY_put_reloc |
57402f1e | 3762 | MY_put_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, howto, |
116c20d2 NC |
3763 | &srel); |
3764 | #else | |
3765 | { | |
3766 | int r_pcrel; | |
3767 | int r_baserel; | |
3768 | int r_jmptable; | |
3769 | int r_relative; | |
3770 | int r_length; | |
252b5132 | 3771 | |
116c20d2 NC |
3772 | r_pcrel = (int) howto->pc_relative; |
3773 | r_baserel = (howto->type & 8) != 0; | |
3774 | r_jmptable = (howto->type & 16) != 0; | |
3775 | r_relative = (howto->type & 32) != 0; | |
3776 | r_length = howto->size; | |
252b5132 | 3777 | |
57402f1e NC |
3778 | PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address); |
3779 | if (bfd_header_big_endian (flaginfo->output_bfd)) | |
116c20d2 NC |
3780 | { |
3781 | srel.r_index[0] = r_index >> 16; | |
3782 | srel.r_index[1] = r_index >> 8; | |
3783 | srel.r_index[2] = r_index; | |
3784 | srel.r_type[0] = | |
3785 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
3786 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
3787 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
3788 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
3789 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
3790 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
3791 | } | |
3792 | else | |
3793 | { | |
3794 | srel.r_index[2] = r_index >> 16; | |
3795 | srel.r_index[1] = r_index >> 8; | |
3796 | srel.r_index[0] = r_index; | |
3797 | srel.r_type[0] = | |
3798 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
3799 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
3800 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
3801 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
3802 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
3803 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
3804 | } | |
3805 | } | |
3806 | #endif | |
3807 | rel_ptr = (void *) &srel; | |
252b5132 | 3808 | |
116c20d2 NC |
3809 | /* We have to write the addend into the object file, since |
3810 | standard a.out relocs are in place. It would be more | |
3811 | reliable if we had the current contents of the file here, | |
3812 | rather than assuming zeroes, but we can't read the file since | |
3813 | it was opened using bfd_openw. */ | |
3814 | if (pr->addend != 0) | |
252b5132 | 3815 | { |
116c20d2 NC |
3816 | bfd_size_type size; |
3817 | bfd_reloc_status_type r; | |
3818 | bfd_byte *buf; | |
3819 | bfd_boolean ok; | |
3820 | ||
3821 | size = bfd_get_reloc_size (howto); | |
a50b1753 | 3822 | buf = (bfd_byte *) bfd_zmalloc (size); |
116c20d2 NC |
3823 | if (buf == NULL) |
3824 | return FALSE; | |
57402f1e | 3825 | r = MY_relocate_contents (howto, flaginfo->output_bfd, |
116c20d2 NC |
3826 | (bfd_vma) pr->addend, buf); |
3827 | switch (r) | |
252b5132 | 3828 | { |
116c20d2 NC |
3829 | case bfd_reloc_ok: |
3830 | break; | |
3831 | default: | |
3832 | case bfd_reloc_outofrange: | |
3833 | abort (); | |
3834 | case bfd_reloc_overflow: | |
57402f1e NC |
3835 | if (! ((*flaginfo->info->callbacks->reloc_overflow) |
3836 | (flaginfo->info, NULL, | |
116c20d2 | 3837 | (p->type == bfd_section_reloc_link_order |
57402f1e | 3838 | ? bfd_section_name (flaginfo->output_bfd, |
116c20d2 NC |
3839 | pr->u.section) |
3840 | : pr->u.name), | |
3841 | howto->name, pr->addend, NULL, NULL, (bfd_vma) 0))) | |
252b5132 | 3842 | { |
116c20d2 NC |
3843 | free (buf); |
3844 | return FALSE; | |
252b5132 | 3845 | } |
116c20d2 | 3846 | break; |
252b5132 | 3847 | } |
57402f1e | 3848 | ok = bfd_set_section_contents (flaginfo->output_bfd, o, (void *) buf, |
116c20d2 NC |
3849 | (file_ptr) p->offset, size); |
3850 | free (buf); | |
3851 | if (! ok) | |
3852 | return FALSE; | |
252b5132 RH |
3853 | } |
3854 | } | |
116c20d2 | 3855 | else |
252b5132 | 3856 | { |
116c20d2 | 3857 | #ifdef MY_put_ext_reloc |
57402f1e | 3858 | MY_put_ext_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, |
116c20d2 NC |
3859 | howto, &erel, pr->addend); |
3860 | #else | |
57402f1e | 3861 | PUT_WORD (flaginfo->output_bfd, p->offset, erel.r_address); |
252b5132 | 3862 | |
57402f1e | 3863 | if (bfd_header_big_endian (flaginfo->output_bfd)) |
116c20d2 NC |
3864 | { |
3865 | erel.r_index[0] = r_index >> 16; | |
3866 | erel.r_index[1] = r_index >> 8; | |
3867 | erel.r_index[2] = r_index; | |
3868 | erel.r_type[0] = | |
3869 | ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
3870 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
3871 | } | |
3872 | else | |
3873 | { | |
3874 | erel.r_index[2] = r_index >> 16; | |
3875 | erel.r_index[1] = r_index >> 8; | |
3876 | erel.r_index[0] = r_index; | |
3877 | erel.r_type[0] = | |
3878 | (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
3879 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
3880 | } | |
252b5132 | 3881 | |
57402f1e | 3882 | PUT_WORD (flaginfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend); |
116c20d2 | 3883 | #endif /* MY_put_ext_reloc */ |
252b5132 | 3884 | |
116c20d2 | 3885 | rel_ptr = (void *) &erel; |
252b5132 | 3886 | } |
252b5132 | 3887 | |
57402f1e NC |
3888 | amt = obj_reloc_entry_size (flaginfo->output_bfd); |
3889 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 | |
3890 | || bfd_bwrite (rel_ptr, amt, flaginfo->output_bfd) != amt) | |
116c20d2 | 3891 | return FALSE; |
252b5132 | 3892 | |
57402f1e | 3893 | *reloff_ptr += obj_reloc_entry_size (flaginfo->output_bfd); |
252b5132 | 3894 | |
116c20d2 NC |
3895 | /* Assert that the relocs have not run into the symbols, and that n |
3896 | the text relocs have not run into the data relocs. */ | |
57402f1e NC |
3897 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
3898 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 3899 | || (*reloff_ptr |
57402f1e | 3900 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
116c20d2 NC |
3901 | |
3902 | return TRUE; | |
252b5132 RH |
3903 | } |
3904 | ||
116c20d2 | 3905 | /* Get the section corresponding to a reloc index. */ |
252b5132 | 3906 | |
116c20d2 NC |
3907 | static INLINE asection * |
3908 | aout_reloc_index_to_section (bfd *abfd, int indx) | |
252b5132 | 3909 | { |
116c20d2 | 3910 | switch (indx & N_TYPE) |
252b5132 | 3911 | { |
116c20d2 NC |
3912 | case N_TEXT: return obj_textsec (abfd); |
3913 | case N_DATA: return obj_datasec (abfd); | |
3914 | case N_BSS: return obj_bsssec (abfd); | |
3915 | case N_ABS: | |
3916 | case N_UNDF: return bfd_abs_section_ptr; | |
3917 | default: abort (); | |
252b5132 | 3918 | } |
116c20d2 | 3919 | return NULL; |
252b5132 RH |
3920 | } |
3921 | ||
116c20d2 | 3922 | /* Relocate an a.out section using standard a.out relocs. */ |
252b5132 | 3923 | |
b34976b6 | 3924 | static bfd_boolean |
57402f1e | 3925 | aout_link_input_section_std (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3926 | bfd *input_bfd, |
3927 | asection *input_section, | |
3928 | struct reloc_std_external *relocs, | |
3929 | bfd_size_type rel_size, | |
3930 | bfd_byte *contents) | |
252b5132 | 3931 | { |
116c20d2 NC |
3932 | bfd_boolean (*check_dynamic_reloc) |
3933 | (struct bfd_link_info *, bfd *, asection *, | |
3934 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
3935 | bfd_vma *); | |
252b5132 | 3936 | bfd *output_bfd; |
116c20d2 NC |
3937 | bfd_boolean relocatable; |
3938 | struct external_nlist *syms; | |
252b5132 | 3939 | char *strings; |
116c20d2 | 3940 | struct aout_link_hash_entry **sym_hashes; |
252b5132 | 3941 | int *symbol_map; |
116c20d2 NC |
3942 | bfd_size_type reloc_count; |
3943 | struct reloc_std_external *rel; | |
3944 | struct reloc_std_external *rel_end; | |
252b5132 | 3945 | |
57402f1e | 3946 | output_bfd = flaginfo->output_bfd; |
116c20d2 | 3947 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
252b5132 | 3948 | |
116c20d2 NC |
3949 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE); |
3950 | BFD_ASSERT (input_bfd->xvec->header_byteorder | |
3951 | == output_bfd->xvec->header_byteorder); | |
252b5132 | 3952 | |
57402f1e | 3953 | relocatable = flaginfo->info->relocatable; |
116c20d2 NC |
3954 | syms = obj_aout_external_syms (input_bfd); |
3955 | strings = obj_aout_external_strings (input_bfd); | |
3956 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 3957 | symbol_map = flaginfo->symbol_map; |
116c20d2 NC |
3958 | |
3959 | reloc_count = rel_size / RELOC_STD_SIZE; | |
3960 | rel = relocs; | |
3961 | rel_end = rel + reloc_count; | |
3962 | for (; rel < rel_end; rel++) | |
252b5132 | 3963 | { |
116c20d2 NC |
3964 | bfd_vma r_addr; |
3965 | int r_index; | |
3966 | int r_extern; | |
3967 | int r_pcrel; | |
3968 | int r_baserel = 0; | |
3969 | reloc_howto_type *howto; | |
3970 | struct aout_link_hash_entry *h = NULL; | |
3971 | bfd_vma relocation; | |
3972 | bfd_reloc_status_type r; | |
252b5132 | 3973 | |
116c20d2 | 3974 | r_addr = GET_SWORD (input_bfd, rel->r_address); |
252b5132 | 3975 | |
116c20d2 NC |
3976 | #ifdef MY_reloc_howto |
3977 | howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel); | |
3978 | #else | |
3979 | { | |
3980 | int r_jmptable; | |
3981 | int r_relative; | |
3982 | int r_length; | |
3983 | unsigned int howto_idx; | |
252b5132 | 3984 | |
116c20d2 NC |
3985 | if (bfd_header_big_endian (input_bfd)) |
3986 | { | |
3987 | r_index = (((unsigned int) rel->r_index[0] << 16) | |
3988 | | ((unsigned int) rel->r_index[1] << 8) | |
3989 | | rel->r_index[2]); | |
3990 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
3991 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
3992 | r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
3993 | r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
3994 | r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
3995 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
3996 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
3997 | } | |
3998 | else | |
3999 | { | |
4000 | r_index = (((unsigned int) rel->r_index[2] << 16) | |
4001 | | ((unsigned int) rel->r_index[1] << 8) | |
4002 | | rel->r_index[0]); | |
4003 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
4004 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
4005 | r_baserel = (0 != (rel->r_type[0] | |
4006 | & RELOC_STD_BITS_BASEREL_LITTLE)); | |
4007 | r_jmptable= (0 != (rel->r_type[0] | |
4008 | & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
4009 | r_relative= (0 != (rel->r_type[0] | |
4010 | & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
4011 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
4012 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
4013 | } | |
252b5132 | 4014 | |
116c20d2 NC |
4015 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel |
4016 | + 16 * r_jmptable + 32 * r_relative); | |
ad756e3f AM |
4017 | if (howto_idx < TABLE_SIZE (howto_table_std)) |
4018 | howto = howto_table_std + howto_idx; | |
4019 | else | |
4020 | howto = NULL; | |
116c20d2 NC |
4021 | } |
4022 | #endif | |
252b5132 | 4023 | |
ad756e3f AM |
4024 | if (howto == NULL) |
4025 | { | |
57402f1e | 4026 | (*flaginfo->info->callbacks->einfo) |
ad756e3f AM |
4027 | (_("%P: %B: unexpected relocation type\n"), input_bfd); |
4028 | bfd_set_error (bfd_error_bad_value); | |
4029 | return FALSE; | |
4030 | } | |
4031 | ||
116c20d2 | 4032 | if (relocatable) |
252b5132 | 4033 | { |
116c20d2 NC |
4034 | /* We are generating a relocatable output file, and must |
4035 | modify the reloc accordingly. */ | |
4036 | if (r_extern) | |
252b5132 | 4037 | { |
116c20d2 NC |
4038 | /* If we know the symbol this relocation is against, |
4039 | convert it into a relocation against a section. This | |
4040 | is what the native linker does. */ | |
4041 | h = sym_hashes[r_index]; | |
4042 | if (h != NULL | |
4043 | && (h->root.type == bfd_link_hash_defined | |
4044 | || h->root.type == bfd_link_hash_defweak)) | |
252b5132 | 4045 | { |
252b5132 RH |
4046 | asection *output_section; |
4047 | ||
116c20d2 NC |
4048 | /* Change the r_extern value. */ |
4049 | if (bfd_header_big_endian (output_bfd)) | |
4050 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG; | |
4051 | else | |
4052 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE; | |
252b5132 | 4053 | |
116c20d2 NC |
4054 | /* Compute a new r_index. */ |
4055 | output_section = h->root.u.def.section->output_section; | |
252b5132 | 4056 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 | 4057 | r_index = N_TEXT; |
252b5132 | 4058 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 | 4059 | r_index = N_DATA; |
252b5132 | 4060 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 | 4061 | r_index = N_BSS; |
252b5132 | 4062 | else |
116c20d2 | 4063 | r_index = N_ABS; |
252b5132 | 4064 | |
116c20d2 NC |
4065 | /* Add the symbol value and the section VMA to the |
4066 | addend stored in the contents. */ | |
4067 | relocation = (h->root.u.def.value | |
4068 | + output_section->vma | |
4069 | + h->root.u.def.section->output_offset); | |
252b5132 | 4070 | } |
116c20d2 | 4071 | else |
252b5132 | 4072 | { |
116c20d2 NC |
4073 | /* We must change r_index according to the symbol |
4074 | map. */ | |
4075 | r_index = symbol_map[r_index]; | |
252b5132 | 4076 | |
116c20d2 | 4077 | if (r_index == -1) |
252b5132 | 4078 | { |
116c20d2 | 4079 | if (h != NULL) |
252b5132 | 4080 | { |
116c20d2 NC |
4081 | /* We decided to strip this symbol, but it |
4082 | turns out that we can't. Note that we | |
4083 | lose the other and desc information here. | |
4084 | I don't think that will ever matter for a | |
4085 | global symbol. */ | |
4086 | if (h->indx < 0) | |
252b5132 | 4087 | { |
116c20d2 NC |
4088 | h->indx = -2; |
4089 | h->written = FALSE; | |
7686d77d | 4090 | if (!aout_link_write_other_symbol (&h->root.root, |
57402f1e | 4091 | flaginfo)) |
116c20d2 | 4092 | return FALSE; |
252b5132 | 4093 | } |
116c20d2 NC |
4094 | r_index = h->indx; |
4095 | } | |
4096 | else | |
4097 | { | |
4098 | const char *name; | |
4099 | ||
4100 | name = strings + GET_WORD (input_bfd, | |
4101 | syms[r_index].e_strx); | |
57402f1e NC |
4102 | if (! ((*flaginfo->info->callbacks->unattached_reloc) |
4103 | (flaginfo->info, name, input_bfd, input_section, | |
116c20d2 NC |
4104 | r_addr))) |
4105 | return FALSE; | |
4106 | r_index = 0; | |
252b5132 RH |
4107 | } |
4108 | } | |
116c20d2 NC |
4109 | |
4110 | relocation = 0; | |
252b5132 RH |
4111 | } |
4112 | ||
116c20d2 NC |
4113 | /* Write out the new r_index value. */ |
4114 | if (bfd_header_big_endian (output_bfd)) | |
252b5132 | 4115 | { |
116c20d2 NC |
4116 | rel->r_index[0] = r_index >> 16; |
4117 | rel->r_index[1] = r_index >> 8; | |
4118 | rel->r_index[2] = r_index; | |
252b5132 RH |
4119 | } |
4120 | else | |
4121 | { | |
116c20d2 NC |
4122 | rel->r_index[2] = r_index >> 16; |
4123 | rel->r_index[1] = r_index >> 8; | |
4124 | rel->r_index[0] = r_index; | |
252b5132 RH |
4125 | } |
4126 | } | |
252b5132 | 4127 | else |
116c20d2 NC |
4128 | { |
4129 | asection *section; | |
252b5132 | 4130 | |
116c20d2 NC |
4131 | /* This is a relocation against a section. We must |
4132 | adjust by the amount that the section moved. */ | |
4133 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4134 | relocation = (section->output_section->vma | |
4135 | + section->output_offset | |
4136 | - section->vma); | |
4137 | } | |
252b5132 | 4138 | |
116c20d2 NC |
4139 | /* Change the address of the relocation. */ |
4140 | PUT_WORD (output_bfd, | |
4141 | r_addr + input_section->output_offset, | |
4142 | rel->r_address); | |
252b5132 | 4143 | |
116c20d2 NC |
4144 | /* Adjust a PC relative relocation by removing the reference |
4145 | to the original address in the section and including the | |
4146 | reference to the new address. */ | |
4147 | if (r_pcrel) | |
4148 | relocation -= (input_section->output_section->vma | |
4149 | + input_section->output_offset | |
4150 | - input_section->vma); | |
e92d460e | 4151 | |
116c20d2 NC |
4152 | #ifdef MY_relocatable_reloc |
4153 | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); | |
4154 | #endif | |
252b5132 | 4155 | |
116c20d2 NC |
4156 | if (relocation == 0) |
4157 | r = bfd_reloc_ok; | |
4158 | else | |
4159 | r = MY_relocate_contents (howto, | |
4160 | input_bfd, relocation, | |
4161 | contents + r_addr); | |
252b5132 | 4162 | } |
116c20d2 NC |
4163 | else |
4164 | { | |
4165 | bfd_boolean hundef; | |
252b5132 | 4166 | |
116c20d2 NC |
4167 | /* We are generating an executable, and must do a full |
4168 | relocation. */ | |
4169 | hundef = FALSE; | |
252b5132 | 4170 | |
116c20d2 NC |
4171 | if (r_extern) |
4172 | { | |
4173 | h = sym_hashes[r_index]; | |
252b5132 | 4174 | |
116c20d2 NC |
4175 | if (h != NULL |
4176 | && (h->root.type == bfd_link_hash_defined | |
4177 | || h->root.type == bfd_link_hash_defweak)) | |
4178 | { | |
4179 | relocation = (h->root.u.def.value | |
4180 | + h->root.u.def.section->output_section->vma | |
4181 | + h->root.u.def.section->output_offset); | |
4182 | } | |
4183 | else if (h != NULL | |
4184 | && h->root.type == bfd_link_hash_undefweak) | |
4185 | relocation = 0; | |
4186 | else | |
4187 | { | |
4188 | hundef = TRUE; | |
4189 | relocation = 0; | |
4190 | } | |
4191 | } | |
4192 | else | |
4193 | { | |
4194 | asection *section; | |
252b5132 | 4195 | |
116c20d2 NC |
4196 | section = aout_reloc_index_to_section (input_bfd, r_index); |
4197 | relocation = (section->output_section->vma | |
4198 | + section->output_offset | |
4199 | - section->vma); | |
4200 | if (r_pcrel) | |
4201 | relocation += input_section->vma; | |
4202 | } | |
252b5132 | 4203 | |
116c20d2 NC |
4204 | if (check_dynamic_reloc != NULL) |
4205 | { | |
4206 | bfd_boolean skip; | |
252b5132 | 4207 | |
116c20d2 | 4208 | if (! ((*check_dynamic_reloc) |
57402f1e | 4209 | (flaginfo->info, input_bfd, input_section, h, |
116c20d2 NC |
4210 | (void *) rel, contents, &skip, &relocation))) |
4211 | return FALSE; | |
4212 | if (skip) | |
4213 | continue; | |
4214 | } | |
252b5132 | 4215 | |
116c20d2 NC |
4216 | /* Now warn if a global symbol is undefined. We could not |
4217 | do this earlier, because check_dynamic_reloc might want | |
4218 | to skip this reloc. */ | |
57402f1e | 4219 | if (hundef && ! flaginfo->info->shared && ! r_baserel) |
116c20d2 NC |
4220 | { |
4221 | const char *name; | |
252b5132 | 4222 | |
116c20d2 NC |
4223 | if (h != NULL) |
4224 | name = h->root.root.string; | |
4225 | else | |
4226 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
57402f1e NC |
4227 | if (! ((*flaginfo->info->callbacks->undefined_symbol) |
4228 | (flaginfo->info, name, input_bfd, input_section, | |
116c20d2 NC |
4229 | r_addr, TRUE))) |
4230 | return FALSE; | |
4231 | } | |
252b5132 | 4232 | |
116c20d2 NC |
4233 | r = MY_final_link_relocate (howto, |
4234 | input_bfd, input_section, | |
4235 | contents, r_addr, relocation, | |
4236 | (bfd_vma) 0); | |
252b5132 | 4237 | } |
252b5132 | 4238 | |
116c20d2 NC |
4239 | if (r != bfd_reloc_ok) |
4240 | { | |
4241 | switch (r) | |
4242 | { | |
4243 | default: | |
4244 | case bfd_reloc_outofrange: | |
4245 | abort (); | |
4246 | case bfd_reloc_overflow: | |
4247 | { | |
4248 | const char *name; | |
252b5132 | 4249 | |
116c20d2 NC |
4250 | if (h != NULL) |
4251 | name = NULL; | |
4252 | else if (r_extern) | |
4253 | name = strings + GET_WORD (input_bfd, | |
4254 | syms[r_index].e_strx); | |
4255 | else | |
4256 | { | |
4257 | asection *s; | |
252b5132 | 4258 | |
116c20d2 NC |
4259 | s = aout_reloc_index_to_section (input_bfd, r_index); |
4260 | name = bfd_section_name (input_bfd, s); | |
4261 | } | |
57402f1e NC |
4262 | if (! ((*flaginfo->info->callbacks->reloc_overflow) |
4263 | (flaginfo->info, (h ? &h->root : NULL), name, | |
116c20d2 NC |
4264 | howto->name, (bfd_vma) 0, input_bfd, |
4265 | input_section, r_addr))) | |
4266 | return FALSE; | |
4267 | } | |
4268 | break; | |
4269 | } | |
4270 | } | |
252b5132 RH |
4271 | } |
4272 | ||
b34976b6 | 4273 | return TRUE; |
252b5132 RH |
4274 | } |
4275 | ||
116c20d2 | 4276 | /* Relocate an a.out section using extended a.out relocs. */ |
252b5132 | 4277 | |
b34976b6 | 4278 | static bfd_boolean |
57402f1e | 4279 | aout_link_input_section_ext (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
4280 | bfd *input_bfd, |
4281 | asection *input_section, | |
4282 | struct reloc_ext_external *relocs, | |
4283 | bfd_size_type rel_size, | |
4284 | bfd_byte *contents) | |
252b5132 | 4285 | { |
b34976b6 | 4286 | bfd_boolean (*check_dynamic_reloc) |
116c20d2 NC |
4287 | (struct bfd_link_info *, bfd *, asection *, |
4288 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
4289 | bfd_vma *); | |
252b5132 | 4290 | bfd *output_bfd; |
1049f94e | 4291 | bfd_boolean relocatable; |
252b5132 RH |
4292 | struct external_nlist *syms; |
4293 | char *strings; | |
4294 | struct aout_link_hash_entry **sym_hashes; | |
4295 | int *symbol_map; | |
4296 | bfd_size_type reloc_count; | |
116c20d2 NC |
4297 | struct reloc_ext_external *rel; |
4298 | struct reloc_ext_external *rel_end; | |
252b5132 | 4299 | |
57402f1e | 4300 | output_bfd = flaginfo->output_bfd; |
252b5132 RH |
4301 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
4302 | ||
116c20d2 | 4303 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE); |
252b5132 RH |
4304 | BFD_ASSERT (input_bfd->xvec->header_byteorder |
4305 | == output_bfd->xvec->header_byteorder); | |
4306 | ||
57402f1e | 4307 | relocatable = flaginfo->info->relocatable; |
252b5132 RH |
4308 | syms = obj_aout_external_syms (input_bfd); |
4309 | strings = obj_aout_external_strings (input_bfd); | |
4310 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4311 | symbol_map = flaginfo->symbol_map; |
252b5132 | 4312 | |
116c20d2 | 4313 | reloc_count = rel_size / RELOC_EXT_SIZE; |
252b5132 RH |
4314 | rel = relocs; |
4315 | rel_end = rel + reloc_count; | |
4316 | for (; rel < rel_end; rel++) | |
4317 | { | |
4318 | bfd_vma r_addr; | |
4319 | int r_index; | |
4320 | int r_extern; | |
116c20d2 NC |
4321 | unsigned int r_type; |
4322 | bfd_vma r_addend; | |
252b5132 | 4323 | struct aout_link_hash_entry *h = NULL; |
116c20d2 | 4324 | asection *r_section = NULL; |
252b5132 | 4325 | bfd_vma relocation; |
252b5132 RH |
4326 | |
4327 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
4328 | ||
116c20d2 NC |
4329 | if (bfd_header_big_endian (input_bfd)) |
4330 | { | |
4331 | r_index = (((unsigned int) rel->r_index[0] << 16) | |
4332 | | ((unsigned int) rel->r_index[1] << 8) | |
4333 | | rel->r_index[2]); | |
4334 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
4335 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
4336 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
4337 | } | |
4338 | else | |
4339 | { | |
4340 | r_index = (((unsigned int) rel->r_index[2] << 16) | |
4341 | | ((unsigned int) rel->r_index[1] << 8) | |
4342 | | rel->r_index[0]); | |
4343 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
4344 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
4345 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
4346 | } | |
252b5132 | 4347 | |
116c20d2 | 4348 | r_addend = GET_SWORD (input_bfd, rel->r_addend); |
252b5132 | 4349 | |
ad756e3f AM |
4350 | if (r_type >= TABLE_SIZE (howto_table_ext)) |
4351 | { | |
57402f1e | 4352 | (*flaginfo->info->callbacks->einfo) |
ad756e3f AM |
4353 | (_("%P: %B: unexpected relocation type\n"), input_bfd); |
4354 | bfd_set_error (bfd_error_bad_value); | |
4355 | return FALSE; | |
4356 | } | |
252b5132 | 4357 | |
1049f94e | 4358 | if (relocatable) |
252b5132 | 4359 | { |
1049f94e | 4360 | /* We are generating a relocatable output file, and must |
252b5132 | 4361 | modify the reloc accordingly. */ |
116c20d2 NC |
4362 | if (r_extern |
4363 | || r_type == (unsigned int) RELOC_BASE10 | |
4364 | || r_type == (unsigned int) RELOC_BASE13 | |
4365 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
4366 | { |
4367 | /* If we know the symbol this relocation is against, | |
4368 | convert it into a relocation against a section. This | |
4369 | is what the native linker does. */ | |
116c20d2 NC |
4370 | if (r_type == (unsigned int) RELOC_BASE10 |
4371 | || r_type == (unsigned int) RELOC_BASE13 | |
4372 | || r_type == (unsigned int) RELOC_BASE22) | |
4373 | h = NULL; | |
4374 | else | |
4375 | h = sym_hashes[r_index]; | |
4376 | if (h != NULL | |
252b5132 RH |
4377 | && (h->root.type == bfd_link_hash_defined |
4378 | || h->root.type == bfd_link_hash_defweak)) | |
4379 | { | |
4380 | asection *output_section; | |
4381 | ||
4382 | /* Change the r_extern value. */ | |
4383 | if (bfd_header_big_endian (output_bfd)) | |
116c20d2 | 4384 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG; |
252b5132 | 4385 | else |
116c20d2 | 4386 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE; |
252b5132 RH |
4387 | |
4388 | /* Compute a new r_index. */ | |
4389 | output_section = h->root.u.def.section->output_section; | |
4390 | if (output_section == obj_textsec (output_bfd)) | |
4391 | r_index = N_TEXT; | |
4392 | else if (output_section == obj_datasec (output_bfd)) | |
4393 | r_index = N_DATA; | |
4394 | else if (output_section == obj_bsssec (output_bfd)) | |
4395 | r_index = N_BSS; | |
4396 | else | |
4397 | r_index = N_ABS; | |
4398 | ||
4399 | /* Add the symbol value and the section VMA to the | |
116c20d2 | 4400 | addend. */ |
252b5132 RH |
4401 | relocation = (h->root.u.def.value |
4402 | + output_section->vma | |
4403 | + h->root.u.def.section->output_offset); | |
116c20d2 NC |
4404 | |
4405 | /* Now RELOCATION is the VMA of the final | |
4406 | destination. If this is a PC relative reloc, | |
4407 | then ADDEND is the negative of the source VMA. | |
4408 | We want to set ADDEND to the difference between | |
4409 | the destination VMA and the source VMA, which | |
4410 | means we must adjust RELOCATION by the change in | |
4411 | the source VMA. This is done below. */ | |
252b5132 RH |
4412 | } |
4413 | else | |
4414 | { | |
4415 | /* We must change r_index according to the symbol | |
4416 | map. */ | |
4417 | r_index = symbol_map[r_index]; | |
4418 | ||
4419 | if (r_index == -1) | |
4420 | { | |
4421 | if (h != NULL) | |
4422 | { | |
4423 | /* We decided to strip this symbol, but it | |
4424 | turns out that we can't. Note that we | |
4425 | lose the other and desc information here. | |
4426 | I don't think that will ever matter for a | |
4427 | global symbol. */ | |
4428 | if (h->indx < 0) | |
4429 | { | |
4430 | h->indx = -2; | |
b34976b6 | 4431 | h->written = FALSE; |
7686d77d | 4432 | if (!aout_link_write_other_symbol (&h->root.root, |
57402f1e | 4433 | flaginfo)) |
b34976b6 | 4434 | return FALSE; |
252b5132 RH |
4435 | } |
4436 | r_index = h->indx; | |
4437 | } | |
4438 | else | |
4439 | { | |
4440 | const char *name; | |
4441 | ||
4442 | name = strings + GET_WORD (input_bfd, | |
4443 | syms[r_index].e_strx); | |
57402f1e NC |
4444 | if (! ((*flaginfo->info->callbacks->unattached_reloc) |
4445 | (flaginfo->info, name, input_bfd, input_section, | |
252b5132 | 4446 | r_addr))) |
b34976b6 | 4447 | return FALSE; |
252b5132 RH |
4448 | r_index = 0; |
4449 | } | |
4450 | } | |
4451 | ||
4452 | relocation = 0; | |
116c20d2 NC |
4453 | |
4454 | /* If this is a PC relative reloc, then the addend | |
4455 | is the negative of the source VMA. We must | |
4456 | adjust it by the change in the source VMA. This | |
4457 | is done below. */ | |
252b5132 RH |
4458 | } |
4459 | ||
4460 | /* Write out the new r_index value. */ | |
4461 | if (bfd_header_big_endian (output_bfd)) | |
4462 | { | |
4463 | rel->r_index[0] = r_index >> 16; | |
4464 | rel->r_index[1] = r_index >> 8; | |
4465 | rel->r_index[2] = r_index; | |
4466 | } | |
4467 | else | |
4468 | { | |
4469 | rel->r_index[2] = r_index >> 16; | |
4470 | rel->r_index[1] = r_index >> 8; | |
4471 | rel->r_index[0] = r_index; | |
4472 | } | |
4473 | } | |
4474 | else | |
4475 | { | |
252b5132 RH |
4476 | /* This is a relocation against a section. We must |
4477 | adjust by the amount that the section moved. */ | |
116c20d2 NC |
4478 | r_section = aout_reloc_index_to_section (input_bfd, r_index); |
4479 | relocation = (r_section->output_section->vma | |
4480 | + r_section->output_offset | |
4481 | - r_section->vma); | |
252b5132 | 4482 | |
116c20d2 NC |
4483 | /* If this is a PC relative reloc, then the addend is |
4484 | the difference in VMA between the destination and the | |
4485 | source. We have just adjusted for the change in VMA | |
4486 | of the destination, so we must also adjust by the | |
4487 | change in VMA of the source. This is done below. */ | |
4488 | } | |
252b5132 | 4489 | |
116c20d2 NC |
4490 | /* As described above, we must always adjust a PC relative |
4491 | reloc by the change in VMA of the source. However, if | |
4492 | pcrel_offset is set, then the addend does not include the | |
4493 | location within the section, in which case we don't need | |
4494 | to adjust anything. */ | |
4495 | if (howto_table_ext[r_type].pc_relative | |
4496 | && ! howto_table_ext[r_type].pcrel_offset) | |
252b5132 RH |
4497 | relocation -= (input_section->output_section->vma |
4498 | + input_section->output_offset | |
4499 | - input_section->vma); | |
4500 | ||
116c20d2 NC |
4501 | /* Change the addend if necessary. */ |
4502 | if (relocation != 0) | |
4503 | PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend); | |
252b5132 | 4504 | |
116c20d2 NC |
4505 | /* Change the address of the relocation. */ |
4506 | PUT_WORD (output_bfd, | |
4507 | r_addr + input_section->output_offset, | |
4508 | rel->r_address); | |
252b5132 RH |
4509 | } |
4510 | else | |
4511 | { | |
b34976b6 | 4512 | bfd_boolean hundef; |
116c20d2 | 4513 | bfd_reloc_status_type r; |
252b5132 RH |
4514 | |
4515 | /* We are generating an executable, and must do a full | |
4516 | relocation. */ | |
b34976b6 | 4517 | hundef = FALSE; |
252b5132 RH |
4518 | |
4519 | if (r_extern) | |
4520 | { | |
4521 | h = sym_hashes[r_index]; | |
4522 | ||
116c20d2 | 4523 | if (h != NULL |
252b5132 RH |
4524 | && (h->root.type == bfd_link_hash_defined |
4525 | || h->root.type == bfd_link_hash_defweak)) | |
4526 | { | |
4527 | relocation = (h->root.u.def.value | |
4528 | + h->root.u.def.section->output_section->vma | |
4529 | + h->root.u.def.section->output_offset); | |
4530 | } | |
116c20d2 | 4531 | else if (h != NULL |
252b5132 RH |
4532 | && h->root.type == bfd_link_hash_undefweak) |
4533 | relocation = 0; | |
4534 | else | |
4535 | { | |
b34976b6 | 4536 | hundef = TRUE; |
252b5132 RH |
4537 | relocation = 0; |
4538 | } | |
4539 | } | |
116c20d2 NC |
4540 | else if (r_type == (unsigned int) RELOC_BASE10 |
4541 | || r_type == (unsigned int) RELOC_BASE13 | |
4542 | || r_type == (unsigned int) RELOC_BASE22) | |
4543 | { | |
4544 | struct external_nlist *sym; | |
4545 | int type; | |
4546 | ||
4547 | /* For base relative relocs, r_index is always an index | |
4548 | into the symbol table, even if r_extern is 0. */ | |
4549 | sym = syms + r_index; | |
4550 | type = H_GET_8 (input_bfd, sym->e_type); | |
4551 | if ((type & N_TYPE) == N_TEXT | |
4552 | || type == N_WEAKT) | |
4553 | r_section = obj_textsec (input_bfd); | |
4554 | else if ((type & N_TYPE) == N_DATA | |
4555 | || type == N_WEAKD) | |
4556 | r_section = obj_datasec (input_bfd); | |
4557 | else if ((type & N_TYPE) == N_BSS | |
4558 | || type == N_WEAKB) | |
4559 | r_section = obj_bsssec (input_bfd); | |
4560 | else if ((type & N_TYPE) == N_ABS | |
4561 | || type == N_WEAKA) | |
4562 | r_section = bfd_abs_section_ptr; | |
4563 | else | |
4564 | abort (); | |
4565 | relocation = (r_section->output_section->vma | |
4566 | + r_section->output_offset | |
4567 | + (GET_WORD (input_bfd, sym->e_value) | |
4568 | - r_section->vma)); | |
4569 | } | |
252b5132 RH |
4570 | else |
4571 | { | |
116c20d2 | 4572 | r_section = aout_reloc_index_to_section (input_bfd, r_index); |
252b5132 | 4573 | |
116c20d2 NC |
4574 | /* If this is a PC relative reloc, then R_ADDEND is the |
4575 | difference between the two vmas, or | |
4576 | old_dest_sec + old_dest_off - (old_src_sec + old_src_off) | |
4577 | where | |
4578 | old_dest_sec == section->vma | |
4579 | and | |
4580 | old_src_sec == input_section->vma | |
4581 | and | |
4582 | old_src_off == r_addr | |
4583 | ||
4584 | _bfd_final_link_relocate expects RELOCATION + | |
4585 | R_ADDEND to be the VMA of the destination minus | |
4586 | r_addr (the minus r_addr is because this relocation | |
4587 | is not pcrel_offset, which is a bit confusing and | |
4588 | should, perhaps, be changed), or | |
4589 | new_dest_sec | |
4590 | where | |
4591 | new_dest_sec == output_section->vma + output_offset | |
4592 | We arrange for this to happen by setting RELOCATION to | |
4593 | new_dest_sec + old_src_sec - old_dest_sec | |
4594 | ||
4595 | If this is not a PC relative reloc, then R_ADDEND is | |
4596 | simply the VMA of the destination, so we set | |
4597 | RELOCATION to the change in the destination VMA, or | |
4598 | new_dest_sec - old_dest_sec | |
4599 | */ | |
4600 | relocation = (r_section->output_section->vma | |
4601 | + r_section->output_offset | |
4602 | - r_section->vma); | |
4603 | if (howto_table_ext[r_type].pc_relative) | |
252b5132 RH |
4604 | relocation += input_section->vma; |
4605 | } | |
4606 | ||
4607 | if (check_dynamic_reloc != NULL) | |
4608 | { | |
b34976b6 | 4609 | bfd_boolean skip; |
252b5132 RH |
4610 | |
4611 | if (! ((*check_dynamic_reloc) | |
57402f1e | 4612 | (flaginfo->info, input_bfd, input_section, h, |
116c20d2 | 4613 | (void *) rel, contents, &skip, &relocation))) |
b34976b6 | 4614 | return FALSE; |
252b5132 RH |
4615 | if (skip) |
4616 | continue; | |
4617 | } | |
4618 | ||
4619 | /* Now warn if a global symbol is undefined. We could not | |
4620 | do this earlier, because check_dynamic_reloc might want | |
4621 | to skip this reloc. */ | |
116c20d2 | 4622 | if (hundef |
57402f1e | 4623 | && ! flaginfo->info->shared |
116c20d2 NC |
4624 | && r_type != (unsigned int) RELOC_BASE10 |
4625 | && r_type != (unsigned int) RELOC_BASE13 | |
4626 | && r_type != (unsigned int) RELOC_BASE22) | |
252b5132 RH |
4627 | { |
4628 | const char *name; | |
4629 | ||
4630 | if (h != NULL) | |
4631 | name = h->root.root.string; | |
4632 | else | |
4633 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
57402f1e NC |
4634 | if (! ((*flaginfo->info->callbacks->undefined_symbol) |
4635 | (flaginfo->info, name, input_bfd, input_section, | |
b34976b6 AM |
4636 | r_addr, TRUE))) |
4637 | return FALSE; | |
252b5132 RH |
4638 | } |
4639 | ||
116c20d2 NC |
4640 | if (r_type != (unsigned int) RELOC_SPARC_REV32) |
4641 | r = MY_final_link_relocate (howto_table_ext + r_type, | |
4642 | input_bfd, input_section, | |
4643 | contents, r_addr, relocation, | |
4644 | r_addend); | |
4645 | else | |
252b5132 | 4646 | { |
116c20d2 | 4647 | bfd_vma x; |
252b5132 | 4648 | |
116c20d2 NC |
4649 | x = bfd_get_32 (input_bfd, contents + r_addr); |
4650 | x = x + relocation + r_addend; | |
4651 | bfd_putl32 (/*input_bfd,*/ x, contents + r_addr); | |
4652 | r = bfd_reloc_ok; | |
4653 | } | |
4654 | ||
4655 | if (r != bfd_reloc_ok) | |
4656 | { | |
4657 | switch (r) | |
4658 | { | |
4659 | default: | |
4660 | case bfd_reloc_outofrange: | |
4661 | abort (); | |
4662 | case bfd_reloc_overflow: | |
252b5132 | 4663 | { |
116c20d2 | 4664 | const char *name; |
252b5132 | 4665 | |
116c20d2 NC |
4666 | if (h != NULL) |
4667 | name = NULL; | |
4668 | else if (r_extern | |
4669 | || r_type == (unsigned int) RELOC_BASE10 | |
4670 | || r_type == (unsigned int) RELOC_BASE13 | |
4671 | || r_type == (unsigned int) RELOC_BASE22) | |
4672 | name = strings + GET_WORD (input_bfd, | |
4673 | syms[r_index].e_strx); | |
4674 | else | |
4675 | { | |
4676 | asection *s; | |
4677 | ||
4678 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
4679 | name = bfd_section_name (input_bfd, s); | |
4680 | } | |
57402f1e NC |
4681 | if (! ((*flaginfo->info->callbacks->reloc_overflow) |
4682 | (flaginfo->info, (h ? &h->root : NULL), name, | |
116c20d2 NC |
4683 | howto_table_ext[r_type].name, |
4684 | r_addend, input_bfd, input_section, r_addr))) | |
4685 | return FALSE; | |
252b5132 | 4686 | } |
116c20d2 NC |
4687 | break; |
4688 | } | |
252b5132 RH |
4689 | } |
4690 | } | |
4691 | } | |
4692 | ||
b34976b6 | 4693 | return TRUE; |
252b5132 RH |
4694 | } |
4695 | ||
116c20d2 NC |
4696 | /* Link an a.out section into the output file. */ |
4697 | ||
4698 | static bfd_boolean | |
57402f1e | 4699 | aout_link_input_section (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
4700 | bfd *input_bfd, |
4701 | asection *input_section, | |
4702 | file_ptr *reloff_ptr, | |
4703 | bfd_size_type rel_size) | |
4704 | { | |
4705 | bfd_size_type input_size; | |
4706 | void * relocs; | |
4707 | ||
4708 | /* Get the section contents. */ | |
4709 | input_size = input_section->size; | |
4710 | if (! bfd_get_section_contents (input_bfd, input_section, | |
57402f1e | 4711 | (void *) flaginfo->contents, |
116c20d2 NC |
4712 | (file_ptr) 0, input_size)) |
4713 | return FALSE; | |
4714 | ||
4715 | /* Read in the relocs if we haven't already done it. */ | |
4716 | if (aout_section_data (input_section) != NULL | |
4717 | && aout_section_data (input_section)->relocs != NULL) | |
4718 | relocs = aout_section_data (input_section)->relocs; | |
4719 | else | |
4720 | { | |
57402f1e | 4721 | relocs = flaginfo->relocs; |
116c20d2 NC |
4722 | if (rel_size > 0) |
4723 | { | |
4724 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
4725 | || bfd_bread (relocs, rel_size, input_bfd) != rel_size) | |
4726 | return FALSE; | |
4727 | } | |
4728 | } | |
4729 | ||
4730 | /* Relocate the section contents. */ | |
4731 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) | |
4732 | { | |
57402f1e | 4733 | if (! aout_link_input_section_std (flaginfo, input_bfd, input_section, |
116c20d2 | 4734 | (struct reloc_std_external *) relocs, |
57402f1e | 4735 | rel_size, flaginfo->contents)) |
116c20d2 NC |
4736 | return FALSE; |
4737 | } | |
4738 | else | |
4739 | { | |
57402f1e | 4740 | if (! aout_link_input_section_ext (flaginfo, input_bfd, input_section, |
116c20d2 | 4741 | (struct reloc_ext_external *) relocs, |
57402f1e | 4742 | rel_size, flaginfo->contents)) |
116c20d2 NC |
4743 | return FALSE; |
4744 | } | |
4745 | ||
4746 | /* Write out the section contents. */ | |
57402f1e | 4747 | if (! bfd_set_section_contents (flaginfo->output_bfd, |
116c20d2 | 4748 | input_section->output_section, |
57402f1e | 4749 | (void *) flaginfo->contents, |
116c20d2 NC |
4750 | (file_ptr) input_section->output_offset, |
4751 | input_size)) | |
4752 | return FALSE; | |
4753 | ||
4754 | /* If we are producing relocatable output, the relocs were | |
4755 | modified, and we now write them out. */ | |
57402f1e | 4756 | if (flaginfo->info->relocatable && rel_size > 0) |
116c20d2 | 4757 | { |
57402f1e | 4758 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) |
116c20d2 | 4759 | return FALSE; |
57402f1e | 4760 | if (bfd_bwrite (relocs, rel_size, flaginfo->output_bfd) != rel_size) |
116c20d2 NC |
4761 | return FALSE; |
4762 | *reloff_ptr += rel_size; | |
4763 | ||
4764 | /* Assert that the relocs have not run into the symbols, and | |
4765 | that if these are the text relocs they have not run into the | |
4766 | data relocs. */ | |
57402f1e NC |
4767 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
4768 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 4769 | || (*reloff_ptr |
57402f1e | 4770 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
116c20d2 NC |
4771 | } |
4772 | ||
4773 | return TRUE; | |
4774 | } | |
4775 | ||
4776 | /* Adjust and write out the symbols for an a.out file. Set the new | |
4777 | symbol indices into a symbol_map. */ | |
252b5132 | 4778 | |
b34976b6 | 4779 | static bfd_boolean |
57402f1e | 4780 | aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
252b5132 | 4781 | { |
252b5132 | 4782 | bfd *output_bfd; |
116c20d2 | 4783 | bfd_size_type sym_count; |
252b5132 | 4784 | char *strings; |
116c20d2 NC |
4785 | enum bfd_link_strip strip; |
4786 | enum bfd_link_discard discard; | |
4787 | struct external_nlist *outsym; | |
4788 | bfd_size_type strtab_index; | |
4789 | struct external_nlist *sym; | |
4790 | struct external_nlist *sym_end; | |
4791 | struct aout_link_hash_entry **sym_hash; | |
252b5132 | 4792 | int *symbol_map; |
116c20d2 NC |
4793 | bfd_boolean pass; |
4794 | bfd_boolean skip_next; | |
252b5132 | 4795 | |
57402f1e | 4796 | output_bfd = flaginfo->output_bfd; |
116c20d2 NC |
4797 | sym_count = obj_aout_external_sym_count (input_bfd); |
4798 | strings = obj_aout_external_strings (input_bfd); | |
57402f1e NC |
4799 | strip = flaginfo->info->strip; |
4800 | discard = flaginfo->info->discard; | |
4801 | outsym = flaginfo->output_syms; | |
252b5132 | 4802 | |
116c20d2 NC |
4803 | /* First write out a symbol for this object file, unless we are |
4804 | discarding such symbols. */ | |
4805 | if (strip != strip_all | |
4806 | && (strip != strip_some | |
57402f1e | 4807 | || bfd_hash_lookup (flaginfo->info->keep_hash, input_bfd->filename, |
116c20d2 NC |
4808 | FALSE, FALSE) != NULL) |
4809 | && discard != discard_all) | |
4810 | { | |
4811 | H_PUT_8 (output_bfd, N_TEXT, outsym->e_type); | |
4812 | H_PUT_8 (output_bfd, 0, outsym->e_other); | |
4813 | H_PUT_16 (output_bfd, 0, outsym->e_desc); | |
57402f1e | 4814 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
116c20d2 NC |
4815 | input_bfd->filename, FALSE); |
4816 | if (strtab_index == (bfd_size_type) -1) | |
4817 | return FALSE; | |
4818 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
4819 | PUT_WORD (output_bfd, | |
4820 | (bfd_get_section_vma (output_bfd, | |
4821 | obj_textsec (input_bfd)->output_section) | |
4822 | + obj_textsec (input_bfd)->output_offset), | |
4823 | outsym->e_value); | |
4824 | ++obj_aout_external_sym_count (output_bfd); | |
4825 | ++outsym; | |
4826 | } | |
252b5132 | 4827 | |
116c20d2 NC |
4828 | pass = FALSE; |
4829 | skip_next = FALSE; | |
4830 | sym = obj_aout_external_syms (input_bfd); | |
4831 | sym_end = sym + sym_count; | |
4832 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4833 | symbol_map = flaginfo->symbol_map; |
116c20d2 NC |
4834 | memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map); |
4835 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) | |
252b5132 | 4836 | { |
116c20d2 NC |
4837 | const char *name; |
4838 | int type; | |
4839 | struct aout_link_hash_entry *h; | |
4840 | bfd_boolean skip; | |
4841 | asection *symsec; | |
4842 | bfd_vma val = 0; | |
4843 | bfd_boolean copy; | |
252b5132 | 4844 | |
116c20d2 NC |
4845 | /* We set *symbol_map to 0 above for all symbols. If it has |
4846 | already been set to -1 for this symbol, it means that we are | |
4847 | discarding it because it appears in a duplicate header file. | |
4848 | See the N_BINCL code below. */ | |
4849 | if (*symbol_map == -1) | |
4850 | continue; | |
252b5132 | 4851 | |
116c20d2 NC |
4852 | /* Initialize *symbol_map to -1, which means that the symbol was |
4853 | not copied into the output file. We will change it later if | |
4854 | we do copy the symbol over. */ | |
4855 | *symbol_map = -1; | |
4856 | ||
4857 | type = H_GET_8 (input_bfd, sym->e_type); | |
4858 | name = strings + GET_WORD (input_bfd, sym->e_strx); | |
4859 | ||
4860 | h = NULL; | |
4861 | ||
4862 | if (pass) | |
252b5132 | 4863 | { |
116c20d2 NC |
4864 | /* Pass this symbol through. It is the target of an |
4865 | indirect or warning symbol. */ | |
4866 | val = GET_WORD (input_bfd, sym->e_value); | |
4867 | pass = FALSE; | |
252b5132 | 4868 | } |
116c20d2 | 4869 | else if (skip_next) |
252b5132 | 4870 | { |
116c20d2 NC |
4871 | /* Skip this symbol, which is the target of an indirect |
4872 | symbol that we have changed to no longer be an indirect | |
4873 | symbol. */ | |
4874 | skip_next = FALSE; | |
4875 | continue; | |
252b5132 | 4876 | } |
116c20d2 NC |
4877 | else |
4878 | { | |
4879 | struct aout_link_hash_entry *hresolve; | |
252b5132 | 4880 | |
116c20d2 NC |
4881 | /* We have saved the hash table entry for this symbol, if |
4882 | there is one. Note that we could just look it up again | |
4883 | in the hash table, provided we first check that it is an | |
4884 | external symbol. */ | |
4885 | h = *sym_hash; | |
252b5132 | 4886 | |
116c20d2 NC |
4887 | /* Use the name from the hash table, in case the symbol was |
4888 | wrapped. */ | |
4889 | if (h != NULL | |
4890 | && h->root.type != bfd_link_hash_warning) | |
4891 | name = h->root.root.string; | |
252b5132 | 4892 | |
116c20d2 NC |
4893 | /* If this is an indirect or warning symbol, then change |
4894 | hresolve to the base symbol. We also change *sym_hash so | |
4895 | that the relocation routines relocate against the real | |
4896 | symbol. */ | |
4897 | hresolve = h; | |
4898 | if (h != (struct aout_link_hash_entry *) NULL | |
4899 | && (h->root.type == bfd_link_hash_indirect | |
4900 | || h->root.type == bfd_link_hash_warning)) | |
252b5132 | 4901 | { |
116c20d2 NC |
4902 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; |
4903 | while (hresolve->root.type == bfd_link_hash_indirect | |
4904 | || hresolve->root.type == bfd_link_hash_warning) | |
4905 | hresolve = ((struct aout_link_hash_entry *) | |
4906 | hresolve->root.u.i.link); | |
4907 | *sym_hash = hresolve; | |
4908 | } | |
4909 | ||
4910 | /* If the symbol has already been written out, skip it. */ | |
4911 | if (h != NULL | |
4912 | && h->written) | |
4913 | { | |
4914 | if ((type & N_TYPE) == N_INDR | |
4915 | || type == N_WARNING) | |
4916 | skip_next = TRUE; | |
4917 | *symbol_map = h->indx; | |
4918 | continue; | |
4919 | } | |
4920 | ||
4921 | /* See if we are stripping this symbol. */ | |
4922 | skip = FALSE; | |
4923 | switch (strip) | |
4924 | { | |
4925 | case strip_none: | |
4926 | break; | |
4927 | case strip_debugger: | |
4928 | if ((type & N_STAB) != 0) | |
4929 | skip = TRUE; | |
4930 | break; | |
4931 | case strip_some: | |
57402f1e | 4932 | if (bfd_hash_lookup (flaginfo->info->keep_hash, name, FALSE, FALSE) |
116c20d2 NC |
4933 | == NULL) |
4934 | skip = TRUE; | |
4935 | break; | |
4936 | case strip_all: | |
4937 | skip = TRUE; | |
4938 | break; | |
4939 | } | |
4940 | if (skip) | |
4941 | { | |
4942 | if (h != NULL) | |
4943 | h->written = TRUE; | |
4944 | continue; | |
4945 | } | |
4946 | ||
4947 | /* Get the value of the symbol. */ | |
4948 | if ((type & N_TYPE) == N_TEXT | |
4949 | || type == N_WEAKT) | |
4950 | symsec = obj_textsec (input_bfd); | |
4951 | else if ((type & N_TYPE) == N_DATA | |
4952 | || type == N_WEAKD) | |
4953 | symsec = obj_datasec (input_bfd); | |
4954 | else if ((type & N_TYPE) == N_BSS | |
4955 | || type == N_WEAKB) | |
4956 | symsec = obj_bsssec (input_bfd); | |
4957 | else if ((type & N_TYPE) == N_ABS | |
4958 | || type == N_WEAKA) | |
4959 | symsec = bfd_abs_section_ptr; | |
4960 | else if (((type & N_TYPE) == N_INDR | |
4961 | && (hresolve == NULL | |
4962 | || (hresolve->root.type != bfd_link_hash_defined | |
4963 | && hresolve->root.type != bfd_link_hash_defweak | |
4964 | && hresolve->root.type != bfd_link_hash_common))) | |
4965 | || type == N_WARNING) | |
4966 | { | |
4967 | /* Pass the next symbol through unchanged. The | |
4968 | condition above for indirect symbols is so that if | |
4969 | the indirect symbol was defined, we output it with | |
4970 | the correct definition so the debugger will | |
4971 | understand it. */ | |
4972 | pass = TRUE; | |
4973 | val = GET_WORD (input_bfd, sym->e_value); | |
4974 | symsec = NULL; | |
4975 | } | |
4976 | else if ((type & N_STAB) != 0) | |
4977 | { | |
4978 | val = GET_WORD (input_bfd, sym->e_value); | |
4979 | symsec = NULL; | |
4980 | } | |
4981 | else | |
4982 | { | |
4983 | /* If we get here with an indirect symbol, it means that | |
4984 | we are outputting it with a real definition. In such | |
4985 | a case we do not want to output the next symbol, | |
4986 | which is the target of the indirection. */ | |
4987 | if ((type & N_TYPE) == N_INDR) | |
4988 | skip_next = TRUE; | |
4989 | ||
4990 | symsec = NULL; | |
4991 | ||
4992 | /* We need to get the value from the hash table. We use | |
4993 | hresolve so that if we have defined an indirect | |
4994 | symbol we output the final definition. */ | |
4995 | if (h == NULL) | |
4996 | { | |
4997 | switch (type & N_TYPE) | |
4998 | { | |
4999 | case N_SETT: | |
5000 | symsec = obj_textsec (input_bfd); | |
5001 | break; | |
5002 | case N_SETD: | |
5003 | symsec = obj_datasec (input_bfd); | |
5004 | break; | |
5005 | case N_SETB: | |
5006 | symsec = obj_bsssec (input_bfd); | |
5007 | break; | |
5008 | case N_SETA: | |
5009 | symsec = bfd_abs_section_ptr; | |
5010 | break; | |
5011 | default: | |
5012 | val = 0; | |
5013 | break; | |
5014 | } | |
5015 | } | |
5016 | else if (hresolve->root.type == bfd_link_hash_defined | |
5017 | || hresolve->root.type == bfd_link_hash_defweak) | |
252b5132 | 5018 | { |
116c20d2 | 5019 | asection *input_section; |
252b5132 RH |
5020 | asection *output_section; |
5021 | ||
116c20d2 NC |
5022 | /* This case usually means a common symbol which was |
5023 | turned into a defined symbol. */ | |
5024 | input_section = hresolve->root.u.def.section; | |
5025 | output_section = input_section->output_section; | |
5026 | BFD_ASSERT (bfd_is_abs_section (output_section) | |
5027 | || output_section->owner == output_bfd); | |
5028 | val = (hresolve->root.u.def.value | |
5029 | + bfd_get_section_vma (output_bfd, output_section) | |
5030 | + input_section->output_offset); | |
5031 | ||
5032 | /* Get the correct type based on the section. If | |
5033 | this is a constructed set, force it to be | |
5034 | globally visible. */ | |
5035 | if (type == N_SETT | |
5036 | || type == N_SETD | |
5037 | || type == N_SETB | |
5038 | || type == N_SETA) | |
5039 | type |= N_EXT; | |
5040 | ||
5041 | type &=~ N_TYPE; | |
252b5132 | 5042 | |
252b5132 | 5043 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 NC |
5044 | type |= (hresolve->root.type == bfd_link_hash_defined |
5045 | ? N_TEXT | |
5046 | : N_WEAKT); | |
252b5132 | 5047 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 NC |
5048 | type |= (hresolve->root.type == bfd_link_hash_defined |
5049 | ? N_DATA | |
5050 | : N_WEAKD); | |
252b5132 | 5051 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 NC |
5052 | type |= (hresolve->root.type == bfd_link_hash_defined |
5053 | ? N_BSS | |
5054 | : N_WEAKB); | |
252b5132 | 5055 | else |
116c20d2 NC |
5056 | type |= (hresolve->root.type == bfd_link_hash_defined |
5057 | ? N_ABS | |
5058 | : N_WEAKA); | |
5059 | } | |
5060 | else if (hresolve->root.type == bfd_link_hash_common) | |
5061 | val = hresolve->root.u.c.size; | |
5062 | else if (hresolve->root.type == bfd_link_hash_undefweak) | |
5063 | { | |
5064 | val = 0; | |
5065 | type = N_WEAKU; | |
252b5132 RH |
5066 | } |
5067 | else | |
116c20d2 NC |
5068 | val = 0; |
5069 | } | |
5070 | if (symsec != NULL) | |
5071 | val = (symsec->output_section->vma | |
5072 | + symsec->output_offset | |
5073 | + (GET_WORD (input_bfd, sym->e_value) | |
5074 | - symsec->vma)); | |
5075 | ||
5076 | /* If this is a global symbol set the written flag, and if | |
5077 | it is a local symbol see if we should discard it. */ | |
5078 | if (h != NULL) | |
5079 | { | |
5080 | h->written = TRUE; | |
5081 | h->indx = obj_aout_external_sym_count (output_bfd); | |
5082 | } | |
5083 | else if ((type & N_TYPE) != N_SETT | |
5084 | && (type & N_TYPE) != N_SETD | |
5085 | && (type & N_TYPE) != N_SETB | |
5086 | && (type & N_TYPE) != N_SETA) | |
5087 | { | |
5088 | switch (discard) | |
252b5132 | 5089 | { |
116c20d2 NC |
5090 | case discard_none: |
5091 | case discard_sec_merge: | |
5092 | break; | |
5093 | case discard_l: | |
5094 | if ((type & N_STAB) == 0 | |
5095 | && bfd_is_local_label_name (input_bfd, name)) | |
5096 | skip = TRUE; | |
5097 | break; | |
5098 | case discard_all: | |
5099 | skip = TRUE; | |
5100 | break; | |
5101 | } | |
5102 | if (skip) | |
5103 | { | |
5104 | pass = FALSE; | |
5105 | continue; | |
5106 | } | |
5107 | } | |
252b5132 | 5108 | |
116c20d2 NC |
5109 | /* An N_BINCL symbol indicates the start of the stabs |
5110 | entries for a header file. We need to scan ahead to the | |
5111 | next N_EINCL symbol, ignoring nesting, adding up all the | |
5112 | characters in the symbol names, not including the file | |
5113 | numbers in types (the first number after an open | |
5114 | parenthesis). */ | |
5115 | if (type == (int) N_BINCL) | |
5116 | { | |
5117 | struct external_nlist *incl_sym; | |
5118 | int nest; | |
5119 | struct aout_link_includes_entry *incl_entry; | |
5120 | struct aout_link_includes_totals *t; | |
5121 | ||
5122 | val = 0; | |
5123 | nest = 0; | |
5124 | for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) | |
5125 | { | |
5126 | int incl_type; | |
5127 | ||
5128 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); | |
5129 | if (incl_type == (int) N_EINCL) | |
252b5132 | 5130 | { |
116c20d2 NC |
5131 | if (nest == 0) |
5132 | break; | |
5133 | --nest; | |
5134 | } | |
5135 | else if (incl_type == (int) N_BINCL) | |
5136 | ++nest; | |
5137 | else if (nest == 0) | |
5138 | { | |
5139 | const char *s; | |
5140 | ||
5141 | s = strings + GET_WORD (input_bfd, incl_sym->e_strx); | |
5142 | for (; *s != '\0'; s++) | |
252b5132 | 5143 | { |
116c20d2 NC |
5144 | val += *s; |
5145 | if (*s == '(') | |
252b5132 | 5146 | { |
116c20d2 NC |
5147 | /* Skip the file number. */ |
5148 | ++s; | |
5149 | while (ISDIGIT (*s)) | |
5150 | ++s; | |
5151 | --s; | |
252b5132 | 5152 | } |
252b5132 | 5153 | } |
116c20d2 NC |
5154 | } |
5155 | } | |
252b5132 | 5156 | |
116c20d2 NC |
5157 | /* If we have already included a header file with the |
5158 | same value, then replace this one with an N_EXCL | |
5159 | symbol. */ | |
57402f1e NC |
5160 | copy = (bfd_boolean) (! flaginfo->info->keep_memory); |
5161 | incl_entry = aout_link_includes_lookup (&flaginfo->includes, | |
116c20d2 NC |
5162 | name, TRUE, copy); |
5163 | if (incl_entry == NULL) | |
5164 | return FALSE; | |
5165 | for (t = incl_entry->totals; t != NULL; t = t->next) | |
5166 | if (t->total == val) | |
5167 | break; | |
5168 | if (t == NULL) | |
5169 | { | |
5170 | /* This is the first time we have seen this header | |
5171 | file with this set of stabs strings. */ | |
a50b1753 | 5172 | t = (struct aout_link_includes_totals *) |
57402f1e | 5173 | bfd_hash_allocate (&flaginfo->includes.root, |
116c20d2 NC |
5174 | sizeof *t); |
5175 | if (t == NULL) | |
5176 | return FALSE; | |
5177 | t->total = val; | |
5178 | t->next = incl_entry->totals; | |
5179 | incl_entry->totals = t; | |
5180 | } | |
5181 | else | |
5182 | { | |
5183 | int *incl_map; | |
5184 | ||
5185 | /* This is a duplicate header file. We must change | |
5186 | it to be an N_EXCL entry, and mark all the | |
5187 | included symbols to prevent outputting them. */ | |
5188 | type = (int) N_EXCL; | |
5189 | ||
5190 | nest = 0; | |
5191 | for (incl_sym = sym + 1, incl_map = symbol_map + 1; | |
5192 | incl_sym < sym_end; | |
5193 | incl_sym++, incl_map++) | |
5194 | { | |
5195 | int incl_type; | |
5196 | ||
5197 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); | |
5198 | if (incl_type == (int) N_EINCL) | |
5199 | { | |
5200 | if (nest == 0) | |
5201 | { | |
5202 | *incl_map = -1; | |
5203 | break; | |
5204 | } | |
5205 | --nest; | |
252b5132 | 5206 | } |
116c20d2 NC |
5207 | else if (incl_type == (int) N_BINCL) |
5208 | ++nest; | |
5209 | else if (nest == 0) | |
5210 | *incl_map = -1; | |
252b5132 | 5211 | } |
252b5132 RH |
5212 | } |
5213 | } | |
116c20d2 NC |
5214 | } |
5215 | ||
5216 | /* Copy this symbol into the list of symbols we are going to | |
5217 | write out. */ | |
5218 | H_PUT_8 (output_bfd, type, outsym->e_type); | |
5219 | H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other); | |
5220 | H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc); | |
5221 | copy = FALSE; | |
57402f1e | 5222 | if (! flaginfo->info->keep_memory) |
116c20d2 NC |
5223 | { |
5224 | /* name points into a string table which we are going to | |
5225 | free. If there is a hash table entry, use that string. | |
5226 | Otherwise, copy name into memory. */ | |
5227 | if (h != NULL) | |
5228 | name = h->root.root.string; | |
252b5132 | 5229 | else |
116c20d2 NC |
5230 | copy = TRUE; |
5231 | } | |
57402f1e | 5232 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
116c20d2 NC |
5233 | name, copy); |
5234 | if (strtab_index == (bfd_size_type) -1) | |
5235 | return FALSE; | |
5236 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
5237 | PUT_WORD (output_bfd, val, outsym->e_value); | |
5238 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
5239 | ++obj_aout_external_sym_count (output_bfd); | |
5240 | ++outsym; | |
5241 | } | |
252b5132 | 5242 | |
116c20d2 | 5243 | /* Write out the output symbols we have just constructed. */ |
57402f1e | 5244 | if (outsym > flaginfo->output_syms) |
116c20d2 NC |
5245 | { |
5246 | bfd_size_type outsym_size; | |
252b5132 | 5247 | |
57402f1e | 5248 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0) |
116c20d2 | 5249 | return FALSE; |
57402f1e | 5250 | outsym_size = outsym - flaginfo->output_syms; |
116c20d2 | 5251 | outsym_size *= EXTERNAL_NLIST_SIZE; |
57402f1e | 5252 | if (bfd_bwrite ((void *) flaginfo->output_syms, outsym_size, output_bfd) |
116c20d2 NC |
5253 | != outsym_size) |
5254 | return FALSE; | |
57402f1e | 5255 | flaginfo->symoff += outsym_size; |
116c20d2 | 5256 | } |
252b5132 | 5257 | |
116c20d2 NC |
5258 | return TRUE; |
5259 | } | |
252b5132 | 5260 | |
116c20d2 | 5261 | /* Link an a.out input BFD into the output file. */ |
252b5132 | 5262 | |
116c20d2 | 5263 | static bfd_boolean |
57402f1e | 5264 | aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
116c20d2 | 5265 | { |
116c20d2 | 5266 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); |
252b5132 | 5267 | |
116c20d2 NC |
5268 | /* If this is a dynamic object, it may need special handling. */ |
5269 | if ((input_bfd->flags & DYNAMIC) != 0 | |
5270 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
5271 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
57402f1e | 5272 | (flaginfo->info, input_bfd)); |
252b5132 | 5273 | |
116c20d2 | 5274 | /* Get the symbols. We probably have them already, unless |
57402f1e | 5275 | flaginfo->info->keep_memory is FALSE. */ |
116c20d2 NC |
5276 | if (! aout_get_external_symbols (input_bfd)) |
5277 | return FALSE; | |
252b5132 | 5278 | |
116c20d2 | 5279 | /* Write out the symbols and get a map of the new indices. The map |
57402f1e NC |
5280 | is placed into flaginfo->symbol_map. */ |
5281 | if (! aout_link_write_symbols (flaginfo, input_bfd)) | |
116c20d2 | 5282 | return FALSE; |
252b5132 | 5283 | |
116c20d2 NC |
5284 | /* Relocate and write out the sections. These functions use the |
5285 | symbol map created by aout_link_write_symbols. The linker_mark | |
5286 | field will be set if these sections are to be included in the | |
5287 | link, which will normally be the case. */ | |
5288 | if (obj_textsec (input_bfd)->linker_mark) | |
5289 | { | |
57402f1e | 5290 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 5291 | obj_textsec (input_bfd), |
57402f1e | 5292 | &flaginfo->treloff, |
116c20d2 NC |
5293 | exec_hdr (input_bfd)->a_trsize)) |
5294 | return FALSE; | |
5295 | } | |
5296 | if (obj_datasec (input_bfd)->linker_mark) | |
5297 | { | |
57402f1e | 5298 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 5299 | obj_datasec (input_bfd), |
57402f1e | 5300 | &flaginfo->dreloff, |
116c20d2 NC |
5301 | exec_hdr (input_bfd)->a_drsize)) |
5302 | return FALSE; | |
5303 | } | |
5304 | ||
5305 | /* If we are not keeping memory, we don't need the symbols any | |
5306 | longer. We still need them if we are keeping memory, because the | |
5307 | strings in the hash table point into them. */ | |
57402f1e | 5308 | if (! flaginfo->info->keep_memory) |
116c20d2 NC |
5309 | { |
5310 | if (! aout_link_free_symbols (input_bfd)) | |
5311 | return FALSE; | |
5312 | } | |
5313 | ||
5314 | return TRUE; | |
5315 | } | |
5316 | ||
5317 | /* Do the final link step. This is called on the output BFD. The | |
5318 | INFO structure should point to a list of BFDs linked through the | |
c72f2fb2 | 5319 | link.next field which can be used to find each BFD which takes part |
116c20d2 NC |
5320 | in the output. Also, each section in ABFD should point to a list |
5321 | of bfd_link_order structures which list all the input sections for | |
5322 | the output section. */ | |
5323 | ||
5324 | bfd_boolean | |
5325 | NAME (aout, final_link) (bfd *abfd, | |
5326 | struct bfd_link_info *info, | |
5327 | void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *)) | |
5328 | { | |
5329 | struct aout_final_link_info aout_info; | |
5330 | bfd_boolean includes_hash_initialized = FALSE; | |
5331 | bfd *sub; | |
5332 | bfd_size_type trsize, drsize; | |
5333 | bfd_size_type max_contents_size; | |
5334 | bfd_size_type max_relocs_size; | |
5335 | bfd_size_type max_sym_count; | |
5336 | bfd_size_type text_size; | |
5337 | file_ptr text_end; | |
5338 | struct bfd_link_order *p; | |
5339 | asection *o; | |
5340 | bfd_boolean have_link_order_relocs; | |
5341 | ||
5342 | if (info->shared) | |
5343 | abfd->flags |= DYNAMIC; | |
5344 | ||
5345 | aout_info.info = info; | |
5346 | aout_info.output_bfd = abfd; | |
5347 | aout_info.contents = NULL; | |
5348 | aout_info.relocs = NULL; | |
5349 | aout_info.symbol_map = NULL; | |
5350 | aout_info.output_syms = NULL; | |
252b5132 | 5351 | |
66eb6687 AM |
5352 | if (!bfd_hash_table_init_n (&aout_info.includes.root, |
5353 | aout_link_includes_newfunc, | |
5354 | sizeof (struct aout_link_includes_entry), | |
5355 | 251)) | |
116c20d2 NC |
5356 | goto error_return; |
5357 | includes_hash_initialized = TRUE; | |
252b5132 | 5358 | |
116c20d2 NC |
5359 | /* Figure out the largest section size. Also, if generating |
5360 | relocatable output, count the relocs. */ | |
5361 | trsize = 0; | |
5362 | drsize = 0; | |
5363 | max_contents_size = 0; | |
5364 | max_relocs_size = 0; | |
5365 | max_sym_count = 0; | |
c72f2fb2 | 5366 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 NC |
5367 | { |
5368 | bfd_size_type sz; | |
252b5132 | 5369 | |
116c20d2 NC |
5370 | if (info->relocatable) |
5371 | { | |
5372 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) | |
252b5132 | 5373 | { |
116c20d2 NC |
5374 | trsize += exec_hdr (sub)->a_trsize; |
5375 | drsize += exec_hdr (sub)->a_drsize; | |
252b5132 | 5376 | } |
252b5132 RH |
5377 | else |
5378 | { | |
116c20d2 NC |
5379 | /* FIXME: We need to identify the .text and .data sections |
5380 | and call get_reloc_upper_bound and canonicalize_reloc to | |
5381 | work out the number of relocs needed, and then multiply | |
5382 | by the reloc size. */ | |
5383 | (*_bfd_error_handler) | |
5384 | (_("%s: relocatable link from %s to %s not supported"), | |
5385 | bfd_get_filename (abfd), | |
5386 | sub->xvec->name, abfd->xvec->name); | |
5387 | bfd_set_error (bfd_error_invalid_operation); | |
5388 | goto error_return; | |
252b5132 | 5389 | } |
116c20d2 | 5390 | } |
252b5132 | 5391 | |
116c20d2 NC |
5392 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
5393 | { | |
5394 | sz = obj_textsec (sub)->size; | |
5395 | if (sz > max_contents_size) | |
5396 | max_contents_size = sz; | |
5397 | sz = obj_datasec (sub)->size; | |
5398 | if (sz > max_contents_size) | |
5399 | max_contents_size = sz; | |
252b5132 | 5400 | |
116c20d2 NC |
5401 | sz = exec_hdr (sub)->a_trsize; |
5402 | if (sz > max_relocs_size) | |
5403 | max_relocs_size = sz; | |
5404 | sz = exec_hdr (sub)->a_drsize; | |
5405 | if (sz > max_relocs_size) | |
5406 | max_relocs_size = sz; | |
252b5132 | 5407 | |
116c20d2 NC |
5408 | sz = obj_aout_external_sym_count (sub); |
5409 | if (sz > max_sym_count) | |
5410 | max_sym_count = sz; | |
252b5132 RH |
5411 | } |
5412 | } | |
5413 | ||
116c20d2 NC |
5414 | if (info->relocatable) |
5415 | { | |
5416 | if (obj_textsec (abfd) != NULL) | |
5417 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
8423293d | 5418 | ->map_head.link_order) |
116c20d2 NC |
5419 | * obj_reloc_entry_size (abfd)); |
5420 | if (obj_datasec (abfd) != NULL) | |
5421 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
8423293d | 5422 | ->map_head.link_order) |
116c20d2 NC |
5423 | * obj_reloc_entry_size (abfd)); |
5424 | } | |
252b5132 | 5425 | |
116c20d2 NC |
5426 | exec_hdr (abfd)->a_trsize = trsize; |
5427 | exec_hdr (abfd)->a_drsize = drsize; | |
252b5132 | 5428 | |
116c20d2 | 5429 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); |
252b5132 | 5430 | |
116c20d2 NC |
5431 | /* Adjust the section sizes and vmas according to the magic number. |
5432 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
5433 | filepos for each section. */ | |
5434 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) | |
5435 | goto error_return; | |
252b5132 | 5436 | |
116c20d2 NC |
5437 | /* The relocation and symbol file positions differ among a.out |
5438 | targets. We are passed a callback routine from the backend | |
5439 | specific code to handle this. | |
5440 | FIXME: At this point we do not know how much space the symbol | |
5441 | table will require. This will not work for any (nonstandard) | |
5442 | a.out target that needs to know the symbol table size before it | |
5443 | can compute the relocation file positions. This may or may not | |
5444 | be the case for the hp300hpux target, for example. */ | |
5445 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, | |
5446 | &aout_info.symoff); | |
5447 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
5448 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
5449 | obj_sym_filepos (abfd) = aout_info.symoff; | |
252b5132 | 5450 | |
116c20d2 NC |
5451 | /* We keep a count of the symbols as we output them. */ |
5452 | obj_aout_external_sym_count (abfd) = 0; | |
5453 | ||
5454 | /* We accumulate the string table as we write out the symbols. */ | |
5455 | aout_info.strtab = _bfd_stringtab_init (); | |
5456 | if (aout_info.strtab == NULL) | |
5457 | goto error_return; | |
5458 | ||
5459 | /* Allocate buffers to hold section contents and relocs. */ | |
a50b1753 | 5460 | aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size); |
116c20d2 | 5461 | aout_info.relocs = bfd_malloc (max_relocs_size); |
c38eb2a6 | 5462 | aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int)); |
a50b1753 NC |
5463 | aout_info.output_syms = (struct external_nlist *) |
5464 | bfd_malloc ((max_sym_count + 1) * sizeof (struct external_nlist)); | |
116c20d2 NC |
5465 | if ((aout_info.contents == NULL && max_contents_size != 0) |
5466 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
5467 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
5468 | || aout_info.output_syms == NULL) | |
5469 | goto error_return; | |
5470 | ||
5471 | /* If we have a symbol named __DYNAMIC, force it out now. This is | |
5472 | required by SunOS. Doing this here rather than in sunos.c is a | |
5473 | hack, but it's easier than exporting everything which would be | |
5474 | needed. */ | |
5475 | { | |
5476 | struct aout_link_hash_entry *h; | |
5477 | ||
5478 | h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", | |
5479 | FALSE, FALSE, FALSE); | |
5480 | if (h != NULL) | |
7686d77d | 5481 | aout_link_write_other_symbol (&h->root.root, &aout_info); |
116c20d2 NC |
5482 | } |
5483 | ||
5484 | /* The most time efficient way to do the link would be to read all | |
5485 | the input object files into memory and then sort out the | |
5486 | information into the output file. Unfortunately, that will | |
5487 | probably use too much memory. Another method would be to step | |
5488 | through everything that composes the text section and write it | |
5489 | out, and then everything that composes the data section and write | |
5490 | it out, and then write out the relocs, and then write out the | |
5491 | symbols. Unfortunately, that requires reading stuff from each | |
5492 | input file several times, and we will not be able to keep all the | |
5493 | input files open simultaneously, and reopening them will be slow. | |
5494 | ||
5495 | What we do is basically process one input file at a time. We do | |
5496 | everything we need to do with an input file once--copy over the | |
5497 | section contents, handle the relocation information, and write | |
5498 | out the symbols--and then we throw away the information we read | |
5499 | from it. This approach requires a lot of lseeks of the output | |
5500 | file, which is unfortunate but still faster than reopening a lot | |
5501 | of files. | |
5502 | ||
5503 | We use the output_has_begun field of the input BFDs to see | |
5504 | whether we have already handled it. */ | |
c72f2fb2 | 5505 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 | 5506 | sub->output_has_begun = FALSE; |
252b5132 | 5507 | |
116c20d2 NC |
5508 | /* Mark all sections which are to be included in the link. This |
5509 | will normally be every section. We need to do this so that we | |
5510 | can identify any sections which the linker has decided to not | |
5511 | include. */ | |
5512 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5513 | { |
8423293d | 5514 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
116c20d2 NC |
5515 | if (p->type == bfd_indirect_link_order) |
5516 | p->u.indirect.section->linker_mark = TRUE; | |
252b5132 RH |
5517 | } |
5518 | ||
116c20d2 NC |
5519 | have_link_order_relocs = FALSE; |
5520 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5521 | { |
8423293d | 5522 | for (p = o->map_head.link_order; |
116c20d2 NC |
5523 | p != NULL; |
5524 | p = p->next) | |
252b5132 | 5525 | { |
116c20d2 NC |
5526 | if (p->type == bfd_indirect_link_order |
5527 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
5528 | == bfd_target_aout_flavour)) | |
252b5132 | 5529 | { |
116c20d2 NC |
5530 | bfd *input_bfd; |
5531 | ||
5532 | input_bfd = p->u.indirect.section->owner; | |
5533 | if (! input_bfd->output_has_begun) | |
252b5132 | 5534 | { |
116c20d2 NC |
5535 | if (! aout_link_input_bfd (&aout_info, input_bfd)) |
5536 | goto error_return; | |
5537 | input_bfd->output_has_begun = TRUE; | |
252b5132 | 5538 | } |
252b5132 | 5539 | } |
116c20d2 NC |
5540 | else if (p->type == bfd_section_reloc_link_order |
5541 | || p->type == bfd_symbol_reloc_link_order) | |
5542 | { | |
5543 | /* These are handled below. */ | |
5544 | have_link_order_relocs = TRUE; | |
5545 | } | |
5546 | else | |
5547 | { | |
5548 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
5549 | goto error_return; | |
5550 | } | |
252b5132 RH |
5551 | } |
5552 | } | |
252b5132 | 5553 | |
116c20d2 | 5554 | /* Write out any symbols that we have not already written out. */ |
7686d77d AM |
5555 | bfd_hash_traverse (&info->hash->table, |
5556 | aout_link_write_other_symbol, | |
5557 | &aout_info); | |
116c20d2 NC |
5558 | |
5559 | /* Now handle any relocs we were asked to create by the linker. | |
5560 | These did not come from any input file. We must do these after | |
5561 | we have written out all the symbols, so that we know the symbol | |
5562 | indices to use. */ | |
5563 | if (have_link_order_relocs) | |
5564 | { | |
5565 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5566 | { |
8423293d | 5567 | for (p = o->map_head.link_order; |
116c20d2 NC |
5568 | p != NULL; |
5569 | p = p->next) | |
5570 | { | |
5571 | if (p->type == bfd_section_reloc_link_order | |
5572 | || p->type == bfd_symbol_reloc_link_order) | |
5573 | { | |
5574 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
5575 | goto error_return; | |
5576 | } | |
5577 | } | |
252b5132 | 5578 | } |
116c20d2 | 5579 | } |
252b5132 | 5580 | |
116c20d2 NC |
5581 | if (aout_info.contents != NULL) |
5582 | { | |
5583 | free (aout_info.contents); | |
5584 | aout_info.contents = NULL; | |
5585 | } | |
5586 | if (aout_info.relocs != NULL) | |
5587 | { | |
5588 | free (aout_info.relocs); | |
5589 | aout_info.relocs = NULL; | |
5590 | } | |
5591 | if (aout_info.symbol_map != NULL) | |
5592 | { | |
5593 | free (aout_info.symbol_map); | |
5594 | aout_info.symbol_map = NULL; | |
5595 | } | |
5596 | if (aout_info.output_syms != NULL) | |
5597 | { | |
5598 | free (aout_info.output_syms); | |
5599 | aout_info.output_syms = NULL; | |
5600 | } | |
5601 | if (includes_hash_initialized) | |
5602 | { | |
5603 | bfd_hash_table_free (&aout_info.includes.root); | |
5604 | includes_hash_initialized = FALSE; | |
5605 | } | |
252b5132 | 5606 | |
116c20d2 NC |
5607 | /* Finish up any dynamic linking we may be doing. */ |
5608 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
5609 | { | |
5610 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
5611 | goto error_return; | |
252b5132 RH |
5612 | } |
5613 | ||
116c20d2 NC |
5614 | /* Update the header information. */ |
5615 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
5616 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
5617 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
5618 | obj_textsec (abfd)->reloc_count = | |
5619 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
5620 | obj_datasec (abfd)->reloc_count = | |
5621 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
252b5132 | 5622 | |
116c20d2 | 5623 | /* Write out the string table, unless there are no symbols. */ |
f6e688f7 AM |
5624 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0) |
5625 | goto error_return; | |
116c20d2 NC |
5626 | if (abfd->symcount > 0) |
5627 | { | |
f6e688f7 | 5628 | if (!emit_stringtab (abfd, aout_info.strtab)) |
116c20d2 NC |
5629 | goto error_return; |
5630 | } | |
f6e688f7 | 5631 | else |
116c20d2 | 5632 | { |
f6e688f7 | 5633 | bfd_byte b[BYTES_IN_WORD]; |
252b5132 | 5634 | |
f6e688f7 AM |
5635 | memset (b, 0, BYTES_IN_WORD); |
5636 | if (bfd_bwrite (b, (bfd_size_type) BYTES_IN_WORD, abfd) != BYTES_IN_WORD) | |
116c20d2 NC |
5637 | goto error_return; |
5638 | } | |
252b5132 | 5639 | |
b34976b6 | 5640 | return TRUE; |
116c20d2 NC |
5641 | |
5642 | error_return: | |
5643 | if (aout_info.contents != NULL) | |
5644 | free (aout_info.contents); | |
5645 | if (aout_info.relocs != NULL) | |
5646 | free (aout_info.relocs); | |
5647 | if (aout_info.symbol_map != NULL) | |
5648 | free (aout_info.symbol_map); | |
5649 | if (aout_info.output_syms != NULL) | |
5650 | free (aout_info.output_syms); | |
5651 | if (includes_hash_initialized) | |
5652 | bfd_hash_table_free (&aout_info.includes.root); | |
5653 | return FALSE; | |
252b5132 | 5654 | } |