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252b5132 | 1 | /* BFD semi-generic back-end for a.out binaries. |
b3adc24a | 2 | Copyright (C) 1990-2020 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 | |
a8eb42a8 AM |
36 | adds to the basic a.out functions support for sun3, sun4, and |
37 | 386 a.out files, to create a target jump vector for a specific | |
38 | target. | |
252b5132 RH |
39 | |
40 | This information is further split out into more specific files | |
41 | for each machine, including @file{sunos.c} for sun3 and sun4, | |
5972ac73 | 42 | and @file{demo64.c} for a demonstration of a 64 bit a.out format. |
252b5132 RH |
43 | |
44 | The base file @file{aoutx.h} defines general mechanisms for | |
45 | reading and writing records to and from disk and various | |
46 | other methods which BFD requires. It is included by | |
47 | @file{aout32.c} and @file{aout64.c} to form the names | |
48 | <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc. | |
49 | ||
50 | As an example, this is what goes on to make the back end for a | |
51 | sun4, from @file{aout32.c}: | |
52 | ||
53 | | #define ARCH_SIZE 32 | |
54 | | #include "aoutx.h" | |
55 | ||
56 | Which exports names: | |
57 | ||
58 | | ... | |
59 | | aout_32_canonicalize_reloc | |
60 | | aout_32_find_nearest_line | |
61 | | aout_32_get_lineno | |
62 | | aout_32_get_reloc_upper_bound | |
63 | | ... | |
64 | ||
65 | from @file{sunos.c}: | |
66 | ||
67 | | #define TARGET_NAME "a.out-sunos-big" | |
6d00b590 | 68 | | #define VECNAME sparc_aout_sunos_be_vec |
252b5132 RH |
69 | | #include "aoutf1.h" |
70 | ||
71 | requires all the names from @file{aout32.c}, and produces the jump vector | |
72 | ||
6d00b590 | 73 | | sparc_aout_sunos_be_vec |
252b5132 RH |
74 | |
75 | The file @file{host-aout.c} is a special case. It is for a large set | |
76 | of hosts that use ``more or less standard'' a.out files, and | |
77 | for which cross-debugging is not interesting. It uses the | |
78 | standard 32-bit a.out support routines, but determines the | |
79 | file offsets and addresses of the text, data, and BSS | |
80 | sections, the machine architecture and machine type, and the | |
81 | entry point address, in a host-dependent manner. Once these | |
82 | values have been determined, generic code is used to handle | |
83 | the object file. | |
84 | ||
85 | When porting it to run on a new system, you must supply: | |
86 | ||
87 | | HOST_PAGE_SIZE | |
88 | | HOST_SEGMENT_SIZE | |
89 | | HOST_MACHINE_ARCH (optional) | |
90 | | HOST_MACHINE_MACHINE (optional) | |
91 | | HOST_TEXT_START_ADDR | |
92 | | HOST_STACK_END_ADDR | |
93 | ||
94 | in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These | |
95 | values, plus the structures and macros defined in @file{a.out.h} on | |
96 | your host system, will produce a BFD target that will access | |
97 | ordinary a.out files on your host. To configure a new machine | |
98 | to use @file{host-aout.c}, specify: | |
99 | ||
100 | | TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec | |
101 | | TDEPFILES= host-aout.o trad-core.o | |
102 | ||
1110793a | 103 | in the @file{config/@var{XXX}.mt} file, and modify @file{configure.ac} |
252b5132 RH |
104 | to use the |
105 | @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your | |
5ed6aba4 | 106 | configuration is selected. */ |
252b5132 RH |
107 | |
108 | /* Some assumptions: | |
109 | * Any BFD with D_PAGED set is ZMAGIC, and vice versa. | |
110 | Doesn't matter what the setting of WP_TEXT is on output, but it'll | |
111 | get set on input. | |
112 | * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC. | |
113 | * Any BFD with both flags clear is OMAGIC. | |
114 | (Just want to make these explicit, so the conditions tested in this | |
115 | file make sense if you're more familiar with a.out than with BFD.) */ | |
116 | ||
117 | #define KEEPIT udata.i | |
118 | ||
252b5132 | 119 | #include "sysdep.h" |
3a551c7a | 120 | #include <limits.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 | ||
a8eb42a8 AM |
139 | The standard records contain only an address, a symbol index, |
140 | and a type field. The extended records also have a full | |
141 | integer for an addend. */ | |
252b5132 | 142 | |
252b5132 RH |
143 | #ifndef CTOR_TABLE_RELOC_HOWTO |
144 | #define CTOR_TABLE_RELOC_IDX 2 | |
923f08ff AM |
145 | #define CTOR_TABLE_RELOC_HOWTO(BFD) \ |
146 | ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \ | |
147 | ? howto_table_ext : howto_table_std) \ | |
148 | + CTOR_TABLE_RELOC_IDX) | |
252b5132 RH |
149 | #endif |
150 | ||
151 | #ifndef MY_swap_std_reloc_in | |
116c20d2 | 152 | #define MY_swap_std_reloc_in NAME (aout, swap_std_reloc_in) |
252b5132 RH |
153 | #endif |
154 | ||
1642229e | 155 | #ifndef MY_swap_ext_reloc_in |
116c20d2 | 156 | #define MY_swap_ext_reloc_in NAME (aout, swap_ext_reloc_in) |
1642229e HPN |
157 | #endif |
158 | ||
252b5132 | 159 | #ifndef MY_swap_std_reloc_out |
116c20d2 | 160 | #define MY_swap_std_reloc_out NAME (aout, swap_std_reloc_out) |
252b5132 RH |
161 | #endif |
162 | ||
1642229e | 163 | #ifndef MY_swap_ext_reloc_out |
116c20d2 | 164 | #define MY_swap_ext_reloc_out NAME (aout, swap_ext_reloc_out) |
1642229e HPN |
165 | #endif |
166 | ||
252b5132 RH |
167 | #ifndef MY_final_link_relocate |
168 | #define MY_final_link_relocate _bfd_final_link_relocate | |
169 | #endif | |
170 | ||
171 | #ifndef MY_relocate_contents | |
172 | #define MY_relocate_contents _bfd_relocate_contents | |
173 | #endif | |
174 | ||
116c20d2 NC |
175 | #define howto_table_ext NAME (aout, ext_howto_table) |
176 | #define howto_table_std NAME (aout, std_howto_table) | |
252b5132 RH |
177 | |
178 | reloc_howto_type howto_table_ext[] = | |
179 | { | |
07d6d2b8 AM |
180 | /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */ |
181 | HOWTO (RELOC_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "8", FALSE, 0, 0x000000ff, FALSE), | |
182 | HOWTO (RELOC_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, 0, "16", FALSE, 0, 0x0000ffff, FALSE), | |
183 | HOWTO (RELOC_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "32", FALSE, 0, 0xffffffff, FALSE), | |
184 | HOWTO (RELOC_DISP8, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0, "DISP8", FALSE, 0, 0x000000ff, FALSE), | |
185 | HOWTO (RELOC_DISP16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "DISP16", FALSE, 0, 0x0000ffff, FALSE), | |
186 | HOWTO (RELOC_DISP32, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0, "DISP32", FALSE, 0, 0xffffffff, FALSE), | |
187 | HOWTO (RELOC_WDISP30, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "WDISP30", FALSE, 0, 0x3fffffff, FALSE), | |
188 | HOWTO (RELOC_WDISP22, 2, 2, 22, TRUE, 0, complain_overflow_signed, 0, "WDISP22", FALSE, 0, 0x003fffff, FALSE), | |
189 | HOWTO (RELOC_HI22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "HI22", FALSE, 0, 0x003fffff, FALSE), | |
190 | HOWTO (RELOC_22, 0, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "22", FALSE, 0, 0x003fffff, FALSE), | |
191 | HOWTO (RELOC_13, 0, 2, 13, FALSE, 0, complain_overflow_bitfield, 0, "13", FALSE, 0, 0x00001fff, FALSE), | |
192 | HOWTO (RELOC_LO10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "LO10", FALSE, 0, 0x000003ff, FALSE), | |
193 | HOWTO (RELOC_SFA_BASE,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_BASE", FALSE, 0, 0xffffffff, FALSE), | |
194 | HOWTO (RELOC_SFA_OFF13,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_OFF13", FALSE, 0, 0xffffffff, FALSE), | |
195 | HOWTO (RELOC_BASE10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "BASE10", FALSE, 0, 0x000003ff, FALSE), | |
196 | HOWTO (RELOC_BASE13, 0, 2, 13, FALSE, 0, complain_overflow_signed, 0, "BASE13", FALSE, 0, 0x00001fff, FALSE), | |
197 | HOWTO (RELOC_BASE22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "BASE22", FALSE, 0, 0x003fffff, FALSE), | |
198 | HOWTO (RELOC_PC10, 0, 2, 10, TRUE, 0, complain_overflow_dont, 0, "PC10", FALSE, 0, 0x000003ff, TRUE), | |
199 | HOWTO (RELOC_PC22, 10, 2, 22, TRUE, 0, complain_overflow_signed, 0, "PC22", FALSE, 0, 0x003fffff, TRUE), | |
200 | HOWTO (RELOC_JMP_TBL, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "JMP_TBL", FALSE, 0, 0x3fffffff, FALSE), | |
116c20d2 NC |
201 | HOWTO (RELOC_SEGOFF16,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "SEGOFF16", FALSE, 0, 0x00000000, FALSE), |
202 | HOWTO (RELOC_GLOB_DAT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "GLOB_DAT", FALSE, 0, 0x00000000, FALSE), | |
203 | HOWTO (RELOC_JMP_SLOT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "JMP_SLOT", FALSE, 0, 0x00000000, FALSE), | |
204 | HOWTO (RELOC_RELATIVE,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "RELATIVE", FALSE, 0, 0x00000000, FALSE), | |
07d6d2b8 AM |
205 | HOWTO (0, 0, 3, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE), |
206 | HOWTO (0, 0, 3, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE), | |
252b5132 | 207 | #define RELOC_SPARC_REV32 RELOC_WDISP19 |
07d6d2b8 | 208 | HOWTO (RELOC_SPARC_REV32, 0, 2, 32, FALSE, 0, complain_overflow_dont, 0,"R_SPARC_REV32",FALSE, 0, 0xffffffff, FALSE), |
252b5132 RH |
209 | }; |
210 | ||
211 | /* Convert standard reloc records to "arelent" format (incl byte swap). */ | |
212 | ||
5ed6aba4 NC |
213 | reloc_howto_type howto_table_std[] = |
214 | { | |
07d6d2b8 AM |
215 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */ |
216 | HOWTO ( 0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", TRUE, 0x000000ff,0x000000ff, FALSE), | |
217 | HOWTO ( 1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE), | |
218 | HOWTO ( 2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", TRUE, 0xffffffff,0xffffffff, FALSE), | |
219 | HOWTO ( 3, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,0,"64", TRUE, 0xdeaddead,0xdeaddead, FALSE), | |
220 | HOWTO ( 4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,"DISP8", TRUE, 0x000000ff,0x000000ff, FALSE), | |
221 | HOWTO ( 5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, FALSE), | |
222 | HOWTO ( 6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0,"DISP32", TRUE, 0xffffffff,0xffffffff, FALSE), | |
223 | HOWTO ( 7, 0, 4, 64, TRUE, 0, complain_overflow_signed, 0,"DISP64", TRUE, 0xfeedface,0xfeedface, FALSE), | |
224 | HOWTO ( 8, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"GOT_REL", FALSE, 0,0x00000000, FALSE), | |
225 | HOWTO ( 9, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"BASE16", FALSE,0xffffffff,0xffffffff, FALSE), | |
226 | HOWTO (10, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"BASE32", FALSE,0xffffffff,0xffffffff, FALSE), | |
5f771d47 ILT |
227 | EMPTY_HOWTO (-1), |
228 | EMPTY_HOWTO (-1), | |
229 | EMPTY_HOWTO (-1), | |
230 | EMPTY_HOWTO (-1), | |
231 | EMPTY_HOWTO (-1), | |
07d6d2b8 | 232 | HOWTO (16, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"JMP_TABLE", FALSE, 0,0x00000000, FALSE), |
5f771d47 ILT |
233 | EMPTY_HOWTO (-1), |
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), | |
07d6d2b8 | 248 | HOWTO (32, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"RELATIVE", FALSE, 0,0x00000000, FALSE), |
5f771d47 ILT |
249 | EMPTY_HOWTO (-1), |
250 | EMPTY_HOWTO (-1), | |
251 | EMPTY_HOWTO (-1), | |
252 | EMPTY_HOWTO (-1), | |
253 | EMPTY_HOWTO (-1), | |
254 | EMPTY_HOWTO (-1), | |
255 | EMPTY_HOWTO (-1), | |
07d6d2b8 | 256 | HOWTO (40, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"BASEREL", FALSE, 0,0x00000000, FALSE), |
252b5132 RH |
257 | }; |
258 | ||
923f08ff | 259 | #define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0])) |
252b5132 RH |
260 | |
261 | reloc_howto_type * | |
116c20d2 | 262 | NAME (aout, reloc_type_lookup) (bfd *abfd, bfd_reloc_code_real_type code) |
252b5132 | 263 | { |
116c20d2 NC |
264 | #define EXT(i, j) case i: return & howto_table_ext [j] |
265 | #define STD(i, j) case i: return & howto_table_std [j] | |
252b5132 | 266 | int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE; |
f7c33884 | 267 | |
252b5132 | 268 | if (code == BFD_RELOC_CTOR) |
30d10e9e | 269 | switch (bfd_arch_bits_per_address (abfd)) |
252b5132 RH |
270 | { |
271 | case 32: | |
272 | code = BFD_RELOC_32; | |
273 | break; | |
274 | case 64: | |
275 | code = BFD_RELOC_64; | |
276 | break; | |
277 | } | |
f7c33884 | 278 | |
252b5132 RH |
279 | if (ext) |
280 | switch (code) | |
281 | { | |
1642229e HPN |
282 | EXT (BFD_RELOC_8, 0); |
283 | EXT (BFD_RELOC_16, 1); | |
252b5132 RH |
284 | EXT (BFD_RELOC_32, 2); |
285 | EXT (BFD_RELOC_HI22, 8); | |
286 | EXT (BFD_RELOC_LO10, 11); | |
287 | EXT (BFD_RELOC_32_PCREL_S2, 6); | |
288 | EXT (BFD_RELOC_SPARC_WDISP22, 7); | |
289 | EXT (BFD_RELOC_SPARC13, 10); | |
290 | EXT (BFD_RELOC_SPARC_GOT10, 14); | |
291 | EXT (BFD_RELOC_SPARC_BASE13, 15); | |
292 | EXT (BFD_RELOC_SPARC_GOT13, 15); | |
293 | EXT (BFD_RELOC_SPARC_GOT22, 16); | |
294 | EXT (BFD_RELOC_SPARC_PC10, 17); | |
295 | EXT (BFD_RELOC_SPARC_PC22, 18); | |
296 | EXT (BFD_RELOC_SPARC_WPLT30, 19); | |
297 | EXT (BFD_RELOC_SPARC_REV32, 26); | |
116c20d2 NC |
298 | default: |
299 | return NULL; | |
252b5132 RH |
300 | } |
301 | else | |
f7c33884 | 302 | /* std relocs. */ |
252b5132 RH |
303 | switch (code) |
304 | { | |
2846975a | 305 | STD (BFD_RELOC_8, 0); |
252b5132 RH |
306 | STD (BFD_RELOC_16, 1); |
307 | STD (BFD_RELOC_32, 2); | |
308 | STD (BFD_RELOC_8_PCREL, 4); | |
309 | STD (BFD_RELOC_16_PCREL, 5); | |
310 | STD (BFD_RELOC_32_PCREL, 6); | |
311 | STD (BFD_RELOC_16_BASEREL, 9); | |
312 | STD (BFD_RELOC_32_BASEREL, 10); | |
116c20d2 NC |
313 | default: |
314 | return NULL; | |
252b5132 RH |
315 | } |
316 | } | |
317 | ||
157090f7 AM |
318 | reloc_howto_type * |
319 | NAME (aout, reloc_name_lookup) (bfd *abfd, const char *r_name) | |
320 | { | |
321 | unsigned int i, size; | |
322 | reloc_howto_type *howto_table; | |
323 | ||
324 | if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE) | |
325 | { | |
326 | howto_table = howto_table_ext; | |
327 | size = sizeof (howto_table_ext) / sizeof (howto_table_ext[0]); | |
328 | } | |
329 | else | |
330 | { | |
331 | howto_table = howto_table_std; | |
332 | size = sizeof (howto_table_std) / sizeof (howto_table_std[0]); | |
333 | } | |
334 | ||
335 | for (i = 0; i < size; i++) | |
336 | if (howto_table[i].name != NULL | |
337 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
338 | return &howto_table[i]; | |
339 | ||
340 | return NULL; | |
341 | } | |
342 | ||
252b5132 RH |
343 | /* |
344 | SUBSECTION | |
345 | Internal entry points | |
346 | ||
347 | DESCRIPTION | |
348 | @file{aoutx.h} exports several routines for accessing the | |
349 | contents of an a.out file, which are gathered and exported in | |
350 | turn by various format specific files (eg sunos.c). | |
252b5132 RH |
351 | */ |
352 | ||
353 | /* | |
354 | FUNCTION | |
355 | aout_@var{size}_swap_exec_header_in | |
356 | ||
357 | SYNOPSIS | |
358 | void aout_@var{size}_swap_exec_header_in, | |
07d6d2b8 AM |
359 | (bfd *abfd, |
360 | struct external_exec *bytes, | |
361 | struct internal_exec *execp); | |
252b5132 RH |
362 | |
363 | DESCRIPTION | |
364 | Swap the information in an executable header @var{raw_bytes} taken | |
365 | from a raw byte stream memory image into the internal exec header | |
366 | structure @var{execp}. | |
367 | */ | |
368 | ||
369 | #ifndef NAME_swap_exec_header_in | |
370 | void | |
116c20d2 NC |
371 | NAME (aout, swap_exec_header_in) (bfd *abfd, |
372 | struct external_exec *bytes, | |
373 | struct internal_exec *execp) | |
252b5132 | 374 | { |
252b5132 RH |
375 | /* The internal_exec structure has some fields that are unused in this |
376 | configuration (IE for i960), so ensure that all such uninitialized | |
377 | fields are zero'd out. There are places where two of these structs | |
0ef5a5bd | 378 | are memcmp'd, and thus the contents do matter. */ |
116c20d2 | 379 | memset ((void *) execp, 0, sizeof (struct internal_exec)); |
252b5132 | 380 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
dc810e39 | 381 | execp->a_info = H_GET_32 (abfd, bytes->e_info); |
252b5132 RH |
382 | execp->a_text = GET_WORD (abfd, bytes->e_text); |
383 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
384 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
385 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
386 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
387 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); | |
388 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
389 | } | |
116c20d2 | 390 | #define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in) |
252b5132 RH |
391 | #endif |
392 | ||
393 | /* | |
394 | FUNCTION | |
395 | aout_@var{size}_swap_exec_header_out | |
396 | ||
397 | SYNOPSIS | |
398 | void aout_@var{size}_swap_exec_header_out | |
399 | (bfd *abfd, | |
400 | struct internal_exec *execp, | |
401 | struct external_exec *raw_bytes); | |
402 | ||
403 | DESCRIPTION | |
404 | Swap the information in an internal exec header structure | |
405 | @var{execp} into the buffer @var{raw_bytes} ready for writing to disk. | |
406 | */ | |
407 | void | |
116c20d2 NC |
408 | NAME (aout, swap_exec_header_out) (bfd *abfd, |
409 | struct internal_exec *execp, | |
410 | struct external_exec *bytes) | |
252b5132 | 411 | { |
0ef5a5bd | 412 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ |
dc810e39 | 413 | H_PUT_32 (abfd, execp->a_info , bytes->e_info); |
252b5132 RH |
414 | PUT_WORD (abfd, execp->a_text , bytes->e_text); |
415 | PUT_WORD (abfd, execp->a_data , bytes->e_data); | |
416 | PUT_WORD (abfd, execp->a_bss , bytes->e_bss); | |
417 | PUT_WORD (abfd, execp->a_syms , bytes->e_syms); | |
418 | PUT_WORD (abfd, execp->a_entry , bytes->e_entry); | |
419 | PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); | |
420 | PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); | |
421 | } | |
422 | ||
423 | /* Make all the section for an a.out file. */ | |
424 | ||
b34976b6 | 425 | bfd_boolean |
116c20d2 | 426 | NAME (aout, make_sections) (bfd *abfd) |
252b5132 | 427 | { |
116c20d2 | 428 | if (obj_textsec (abfd) == NULL && bfd_make_section (abfd, ".text") == NULL) |
b34976b6 | 429 | return FALSE; |
116c20d2 | 430 | if (obj_datasec (abfd) == NULL && bfd_make_section (abfd, ".data") == NULL) |
b34976b6 | 431 | return FALSE; |
116c20d2 | 432 | if (obj_bsssec (abfd) == NULL && bfd_make_section (abfd, ".bss") == NULL) |
b34976b6 AM |
433 | return FALSE; |
434 | return TRUE; | |
252b5132 RH |
435 | } |
436 | ||
437 | /* | |
438 | FUNCTION | |
439 | aout_@var{size}_some_aout_object_p | |
440 | ||
441 | SYNOPSIS | |
442 | const bfd_target *aout_@var{size}_some_aout_object_p | |
443 | (bfd *abfd, | |
07d6d2b8 | 444 | struct internal_exec *execp, |
116c20d2 | 445 | const bfd_target *(*callback_to_real_object_p) (bfd *)); |
252b5132 RH |
446 | |
447 | DESCRIPTION | |
448 | Some a.out variant thinks that the file open in @var{abfd} | |
449 | checking is an a.out file. Do some more checking, and set up | |
450 | for access if it really is. Call back to the calling | |
451 | environment's "finish up" function just before returning, to | |
452 | handle any last-minute setup. | |
453 | */ | |
454 | ||
cb001c0d | 455 | bfd_cleanup |
116c20d2 NC |
456 | NAME (aout, some_aout_object_p) (bfd *abfd, |
457 | struct internal_exec *execp, | |
cb001c0d | 458 | bfd_cleanup (*callback_to_real_object_p) (bfd *)) |
252b5132 RH |
459 | { |
460 | struct aout_data_struct *rawptr, *oldrawptr; | |
cb001c0d | 461 | bfd_cleanup result; |
986f0783 | 462 | size_t amt = sizeof (* rawptr); |
252b5132 | 463 | |
a50b1753 | 464 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt); |
252b5132 | 465 | if (rawptr == NULL) |
116c20d2 | 466 | return NULL; |
252b5132 RH |
467 | |
468 | oldrawptr = abfd->tdata.aout_data; | |
469 | abfd->tdata.aout_data = rawptr; | |
470 | ||
dc12032b | 471 | /* Copy the contents of the old tdata struct. */ |
252b5132 RH |
472 | if (oldrawptr != NULL) |
473 | *abfd->tdata.aout_data = *oldrawptr; | |
474 | ||
475 | abfd->tdata.aout_data->a.hdr = &rawptr->e; | |
f7c33884 NC |
476 | /* Copy in the internal_exec struct. */ |
477 | *(abfd->tdata.aout_data->a.hdr) = *execp; | |
252b5132 RH |
478 | execp = abfd->tdata.aout_data->a.hdr; |
479 | ||
f7c33884 | 480 | /* Set the file flags. */ |
252b5132 RH |
481 | abfd->flags = BFD_NO_FLAGS; |
482 | if (execp->a_drsize || execp->a_trsize) | |
483 | abfd->flags |= HAS_RELOC; | |
f7c33884 | 484 | /* Setting of EXEC_P has been deferred to the bottom of this function. */ |
252b5132 RH |
485 | if (execp->a_syms) |
486 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
bbb1afc8 | 487 | if (N_DYNAMIC (execp)) |
252b5132 RH |
488 | abfd->flags |= DYNAMIC; |
489 | ||
bbb1afc8 | 490 | if (N_MAGIC (execp) == ZMAGIC) |
252b5132 RH |
491 | { |
492 | abfd->flags |= D_PAGED | WP_TEXT; | |
493 | adata (abfd).magic = z_magic; | |
494 | } | |
bbb1afc8 | 495 | else if (N_MAGIC (execp) == QMAGIC) |
252b5132 RH |
496 | { |
497 | abfd->flags |= D_PAGED | WP_TEXT; | |
498 | adata (abfd).magic = z_magic; | |
499 | adata (abfd).subformat = q_magic_format; | |
500 | } | |
bbb1afc8 | 501 | else if (N_MAGIC (execp) == NMAGIC) |
252b5132 RH |
502 | { |
503 | abfd->flags |= WP_TEXT; | |
504 | adata (abfd).magic = n_magic; | |
505 | } | |
bbb1afc8 AM |
506 | else if (N_MAGIC (execp) == OMAGIC |
507 | || N_MAGIC (execp) == BMAGIC) | |
252b5132 RH |
508 | adata (abfd).magic = o_magic; |
509 | else | |
116c20d2 NC |
510 | /* Should have been checked with N_BADMAG before this routine |
511 | was called. */ | |
512 | abort (); | |
252b5132 | 513 | |
ed48ec2e | 514 | abfd->start_address = execp->a_entry; |
252b5132 | 515 | |
116c20d2 | 516 | obj_aout_symbols (abfd) = NULL; |
ed48ec2e | 517 | abfd->symcount = execp->a_syms / sizeof (struct external_nlist); |
252b5132 RH |
518 | |
519 | /* The default relocation entry size is that of traditional V7 Unix. */ | |
520 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
521 | ||
0ef5a5bd | 522 | /* The default symbol entry size is that of traditional Unix. */ |
252b5132 RH |
523 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; |
524 | ||
525 | #ifdef USE_MMAP | |
526 | bfd_init_window (&obj_aout_sym_window (abfd)); | |
527 | bfd_init_window (&obj_aout_string_window (abfd)); | |
528 | #endif | |
529 | obj_aout_external_syms (abfd) = NULL; | |
530 | obj_aout_external_strings (abfd) = NULL; | |
531 | obj_aout_sym_hashes (abfd) = NULL; | |
532 | ||
116c20d2 | 533 | if (! NAME (aout, make_sections) (abfd)) |
487e54f2 | 534 | goto error_ret; |
252b5132 | 535 | |
eea6121a AM |
536 | obj_datasec (abfd)->size = execp->a_data; |
537 | obj_bsssec (abfd)->size = execp->a_bss; | |
252b5132 RH |
538 | |
539 | obj_textsec (abfd)->flags = | |
540 | (execp->a_trsize != 0 | |
541 | ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) | |
542 | : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); | |
543 | obj_datasec (abfd)->flags = | |
544 | (execp->a_drsize != 0 | |
545 | ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) | |
546 | : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); | |
547 | obj_bsssec (abfd)->flags = SEC_ALLOC; | |
548 | ||
549 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
550 | /* The common code can't fill in these things because they depend | |
551 | on either the start address of the text segment, the rounding | |
552 | up of virtual addresses between segments, or the starting file | |
553 | position of the text segment -- all of which varies among different | |
554 | versions of a.out. */ | |
555 | ||
556 | /* Call back to the format-dependent code to fill in the rest of the | |
557 | fields and do any further cleanup. Things that should be filled | |
558 | in by the callback: */ | |
559 | ||
560 | struct exec *execp = exec_hdr (abfd); | |
561 | ||
bbb1afc8 | 562 | obj_textsec (abfd)->size = N_TXTSIZE (execp); |
f7c33884 | 563 | /* Data and bss are already filled in since they're so standard. */ |
252b5132 | 564 | |
f7c33884 | 565 | /* The virtual memory addresses of the sections. */ |
bbb1afc8 AM |
566 | obj_textsec (abfd)->vma = N_TXTADDR (execp); |
567 | obj_datasec (abfd)->vma = N_DATADDR (execp); | |
568 | obj_bsssec (abfd)->vma = N_BSSADDR (execp); | |
252b5132 | 569 | |
f7c33884 | 570 | /* The file offsets of the sections. */ |
bbb1afc8 AM |
571 | obj_textsec (abfd)->filepos = N_TXTOFF (execp); |
572 | obj_datasec (abfd)->filepos = N_DATOFF (execp); | |
252b5132 | 573 | |
f7c33884 | 574 | /* The file offsets of the relocation info. */ |
bbb1afc8 AM |
575 | obj_textsec (abfd)->rel_filepos = N_TRELOFF (execp); |
576 | obj_datasec (abfd)->rel_filepos = N_DRELOFF (execp); | |
252b5132 RH |
577 | |
578 | /* The file offsets of the string table and symbol table. */ | |
bbb1afc8 AM |
579 | obj_str_filepos (abfd) = N_STROFF (execp); |
580 | obj_sym_filepos (abfd) = N_SYMOFF (execp); | |
252b5132 RH |
581 | |
582 | /* Determine the architecture and machine type of the object file. */ | |
bbb1afc8 | 583 | switch (N_MACHTYPE (exec_hdr (abfd))) |
923f08ff AM |
584 | { |
585 | default: | |
586 | abfd->obj_arch = bfd_arch_obscure; | |
587 | break; | |
588 | } | |
252b5132 | 589 | |
923f08ff AM |
590 | adata (abfd)->page_size = TARGET_PAGE_SIZE; |
591 | adata (abfd)->segment_size = SEGMENT_SIZE; | |
592 | adata (abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
252b5132 | 593 | |
cb001c0d | 594 | return _bfd_no_cleanup |
252b5132 RH |
595 | |
596 | /* The architecture is encoded in various ways in various a.out variants, | |
597 | or is not encoded at all in some of them. The relocation size depends | |
598 | on the architecture and the a.out variant. Finally, the return value | |
599 | is the bfd_target vector in use. If an error occurs, return zero and | |
600 | set bfd_error to the appropriate error code. | |
601 | ||
602 | Formats such as b.out, which have additional fields in the a.out | |
603 | header, should cope with them in this callback as well. */ | |
604 | #endif /* DOCUMENTATION */ | |
605 | ||
beb0d161 | 606 | result = (*callback_to_real_object_p) (abfd); |
252b5132 RH |
607 | |
608 | /* Now that the segment addresses have been worked out, take a better | |
609 | guess at whether the file is executable. If the entry point | |
610 | is within the text segment, assume it is. (This makes files | |
611 | executable even if their entry point address is 0, as long as | |
612 | their text starts at zero.). | |
613 | ||
614 | This test had to be changed to deal with systems where the text segment | |
615 | runs at a different location than the default. The problem is that the | |
616 | entry address can appear to be outside the text segment, thus causing an | |
617 | erroneous conclusion that the file isn't executable. | |
618 | ||
619 | To fix this, we now accept any non-zero entry point as an indication of | |
620 | executability. This will work most of the time, since only the linker | |
0ef5a5bd | 621 | sets the entry point, and that is likely to be non-zero for most systems. */ |
252b5132 RH |
622 | |
623 | if (execp->a_entry != 0 | |
923f08ff AM |
624 | || (execp->a_entry >= obj_textsec (abfd)->vma |
625 | && execp->a_entry < (obj_textsec (abfd)->vma | |
4c1534c7 AM |
626 | + obj_textsec (abfd)->size) |
627 | && execp->a_trsize == 0 | |
628 | && execp->a_drsize == 0)) | |
252b5132 RH |
629 | abfd->flags |= EXEC_P; |
630 | #ifdef STAT_FOR_EXEC | |
631 | else | |
632 | { | |
633 | struct stat stat_buf; | |
634 | ||
635 | /* The original heuristic doesn't work in some important cases. | |
07d6d2b8 AM |
636 | The a.out file has no information about the text start |
637 | address. For files (like kernels) linked to non-standard | |
638 | addresses (ld -Ttext nnn) the entry point may not be between | |
639 | the default text start (obj_textsec(abfd)->vma) and | |
640 | (obj_textsec(abfd)->vma) + text size. This is not just a mach | |
641 | issue. Many kernels are loaded at non standard addresses. */ | |
252b5132 RH |
642 | if (abfd->iostream != NULL |
643 | && (abfd->flags & BFD_IN_MEMORY) == 0 | |
923f08ff | 644 | && (fstat (fileno ((FILE *) (abfd->iostream)), &stat_buf) == 0) |
252b5132 RH |
645 | && ((stat_buf.st_mode & 0111) != 0)) |
646 | abfd->flags |= EXEC_P; | |
647 | } | |
648 | #endif /* STAT_FOR_EXEC */ | |
649 | ||
650 | if (result) | |
0e71e495 | 651 | return result; |
487e54f2 AM |
652 | |
653 | error_ret: | |
654 | bfd_release (abfd, rawptr); | |
655 | abfd->tdata.aout_data = oldrawptr; | |
656 | return NULL; | |
252b5132 RH |
657 | } |
658 | ||
659 | /* | |
660 | FUNCTION | |
661 | aout_@var{size}_mkobject | |
662 | ||
663 | SYNOPSIS | |
b34976b6 | 664 | bfd_boolean aout_@var{size}_mkobject, (bfd *abfd); |
252b5132 RH |
665 | |
666 | DESCRIPTION | |
667 | Initialize BFD @var{abfd} for use with a.out files. | |
668 | */ | |
669 | ||
b34976b6 | 670 | bfd_boolean |
116c20d2 | 671 | NAME (aout, mkobject) (bfd *abfd) |
252b5132 | 672 | { |
dc810e39 | 673 | struct aout_data_struct *rawptr; |
986f0783 | 674 | size_t amt = sizeof (* rawptr); |
252b5132 RH |
675 | |
676 | bfd_set_error (bfd_error_system_call); | |
677 | ||
a50b1753 | 678 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt); |
252b5132 | 679 | if (rawptr == NULL) |
b34976b6 | 680 | return FALSE; |
252b5132 RH |
681 | |
682 | abfd->tdata.aout_data = rawptr; | |
683 | exec_hdr (abfd) = &(rawptr->e); | |
684 | ||
116c20d2 NC |
685 | obj_textsec (abfd) = NULL; |
686 | obj_datasec (abfd) = NULL; | |
687 | obj_bsssec (abfd) = NULL; | |
252b5132 | 688 | |
b34976b6 | 689 | return TRUE; |
252b5132 RH |
690 | } |
691 | ||
252b5132 RH |
692 | /* |
693 | FUNCTION | |
694 | aout_@var{size}_machine_type | |
695 | ||
696 | SYNOPSIS | |
697 | enum machine_type aout_@var{size}_machine_type | |
698 | (enum bfd_architecture arch, | |
116c20d2 | 699 | unsigned long machine, |
07d6d2b8 | 700 | bfd_boolean *unknown); |
252b5132 RH |
701 | |
702 | DESCRIPTION | |
703 | Keep track of machine architecture and machine type for | |
704 | a.out's. Return the <<machine_type>> for a particular | |
705 | architecture and machine, or <<M_UNKNOWN>> if that exact architecture | |
706 | and machine can't be represented in a.out format. | |
707 | ||
708 | If the architecture is understood, machine type 0 (default) | |
709 | is always understood. | |
710 | */ | |
711 | ||
712 | enum machine_type | |
116c20d2 NC |
713 | NAME (aout, machine_type) (enum bfd_architecture arch, |
714 | unsigned long machine, | |
715 | bfd_boolean *unknown) | |
252b5132 RH |
716 | { |
717 | enum machine_type arch_flags; | |
718 | ||
719 | arch_flags = M_UNKNOWN; | |
b34976b6 | 720 | *unknown = TRUE; |
252b5132 | 721 | |
923f08ff AM |
722 | switch (arch) |
723 | { | |
724 | case bfd_arch_sparc: | |
725 | if (machine == 0 | |
726 | || machine == bfd_mach_sparc | |
727 | || machine == bfd_mach_sparc_sparclite | |
728 | || machine == bfd_mach_sparc_sparclite_le | |
74d26813 L |
729 | || machine == bfd_mach_sparc_v8plus |
730 | || machine == bfd_mach_sparc_v8plusa | |
731 | || machine == bfd_mach_sparc_v8plusb | |
07d6d2b8 AM |
732 | || machine == bfd_mach_sparc_v8plusc |
733 | || machine == bfd_mach_sparc_v8plusd | |
734 | || machine == bfd_mach_sparc_v8pluse | |
735 | || machine == bfd_mach_sparc_v8plusv | |
736 | || machine == bfd_mach_sparc_v8plusm | |
737 | || machine == bfd_mach_sparc_v8plusm8 | |
74d26813 L |
738 | || machine == bfd_mach_sparc_v9 |
739 | || machine == bfd_mach_sparc_v9a | |
4f26fb3a | 740 | || machine == bfd_mach_sparc_v9b |
07d6d2b8 AM |
741 | || machine == bfd_mach_sparc_v9c |
742 | || machine == bfd_mach_sparc_v9d | |
743 | || machine == bfd_mach_sparc_v9e | |
744 | || machine == bfd_mach_sparc_v9v | |
64517994 | 745 | || machine == bfd_mach_sparc_v9m |
07d6d2b8 | 746 | || machine == bfd_mach_sparc_v9m8) |
923f08ff AM |
747 | arch_flags = M_SPARC; |
748 | else if (machine == bfd_mach_sparc_sparclet) | |
749 | arch_flags = M_SPARCLET; | |
750 | break; | |
751 | ||
923f08ff | 752 | case bfd_arch_i386: |
3b77b1d5 AM |
753 | if (machine == 0 |
754 | || machine == bfd_mach_i386_i386 | |
755 | || machine == bfd_mach_i386_i386_intel_syntax) | |
923f08ff | 756 | arch_flags = M_386; |
252b5132 | 757 | break; |
923f08ff | 758 | |
923f08ff AM |
759 | case bfd_arch_arm: |
760 | if (machine == 0) | |
761 | arch_flags = M_ARM; | |
252b5132 | 762 | break; |
252b5132 | 763 | |
923f08ff AM |
764 | case bfd_arch_mips: |
765 | switch (machine) | |
766 | { | |
767 | case 0: | |
768 | case bfd_mach_mips3000: | |
769 | case bfd_mach_mips3900: | |
770 | arch_flags = M_MIPS1; | |
771 | break; | |
772 | case bfd_mach_mips6000: | |
773 | arch_flags = M_MIPS2; | |
774 | break; | |
775 | case bfd_mach_mips4000: | |
776 | case bfd_mach_mips4010: | |
777 | case bfd_mach_mips4100: | |
778 | case bfd_mach_mips4300: | |
779 | case bfd_mach_mips4400: | |
780 | case bfd_mach_mips4600: | |
781 | case bfd_mach_mips4650: | |
782 | case bfd_mach_mips8000: | |
0d2e43ed | 783 | case bfd_mach_mips9000: |
923f08ff AM |
784 | case bfd_mach_mips10000: |
785 | case bfd_mach_mips12000: | |
3aa3176b TS |
786 | case bfd_mach_mips14000: |
787 | case bfd_mach_mips16000: | |
923f08ff AM |
788 | case bfd_mach_mips16: |
789 | case bfd_mach_mipsisa32: | |
af7ee8bf | 790 | case bfd_mach_mipsisa32r2: |
ae52f483 AB |
791 | case bfd_mach_mipsisa32r3: |
792 | case bfd_mach_mipsisa32r5: | |
7361da2c | 793 | case bfd_mach_mipsisa32r6: |
923f08ff AM |
794 | case bfd_mach_mips5: |
795 | case bfd_mach_mipsisa64: | |
5f74bc13 | 796 | case bfd_mach_mipsisa64r2: |
ae52f483 AB |
797 | case bfd_mach_mipsisa64r3: |
798 | case bfd_mach_mipsisa64r5: | |
7361da2c | 799 | case bfd_mach_mipsisa64r6: |
923f08ff | 800 | case bfd_mach_mips_sb1: |
52b6b6b9 | 801 | case bfd_mach_mips_xlr: |
923f08ff AM |
802 | /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */ |
803 | arch_flags = M_MIPS2; | |
804 | break; | |
805 | default: | |
806 | arch_flags = M_UNKNOWN; | |
807 | break; | |
808 | } | |
809 | break; | |
810 | ||
811 | case bfd_arch_ns32k: | |
812 | switch (machine) | |
813 | { | |
07d6d2b8 | 814 | case 0: arch_flags = M_NS32532; break; |
923f08ff AM |
815 | case 32032: arch_flags = M_NS32032; break; |
816 | case 32532: arch_flags = M_NS32532; break; | |
817 | default: arch_flags = M_UNKNOWN; break; | |
818 | } | |
819 | break; | |
252b5132 | 820 | |
923f08ff | 821 | case bfd_arch_vax: |
b34976b6 | 822 | *unknown = FALSE; |
923f08ff | 823 | break; |
06c15ad7 | 824 | |
923f08ff AM |
825 | case bfd_arch_cris: |
826 | if (machine == 0 || machine == 255) | |
827 | arch_flags = M_CRIS; | |
828 | break; | |
829 | ||
830 | default: | |
831 | arch_flags = M_UNKNOWN; | |
832 | } | |
252b5132 RH |
833 | |
834 | if (arch_flags != M_UNKNOWN) | |
b34976b6 | 835 | *unknown = FALSE; |
252b5132 RH |
836 | |
837 | return arch_flags; | |
838 | } | |
839 | ||
252b5132 RH |
840 | /* |
841 | FUNCTION | |
842 | aout_@var{size}_set_arch_mach | |
843 | ||
844 | SYNOPSIS | |
b34976b6 | 845 | bfd_boolean aout_@var{size}_set_arch_mach, |
252b5132 RH |
846 | (bfd *, |
847 | enum bfd_architecture arch, | |
116c20d2 | 848 | unsigned long machine); |
252b5132 RH |
849 | |
850 | DESCRIPTION | |
851 | Set the architecture and the machine of the BFD @var{abfd} to the | |
852 | values @var{arch} and @var{machine}. Verify that @var{abfd}'s format | |
853 | can support the architecture required. | |
854 | */ | |
855 | ||
b34976b6 | 856 | bfd_boolean |
116c20d2 NC |
857 | NAME (aout, set_arch_mach) (bfd *abfd, |
858 | enum bfd_architecture arch, | |
859 | unsigned long machine) | |
252b5132 RH |
860 | { |
861 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) | |
b34976b6 | 862 | return FALSE; |
252b5132 RH |
863 | |
864 | if (arch != bfd_arch_unknown) | |
865 | { | |
b34976b6 | 866 | bfd_boolean unknown; |
252b5132 | 867 | |
116c20d2 | 868 | NAME (aout, machine_type) (arch, machine, &unknown); |
252b5132 | 869 | if (unknown) |
b34976b6 | 870 | return FALSE; |
252b5132 RH |
871 | } |
872 | ||
f7c33884 | 873 | /* Determine the size of a relocation entry. */ |
923f08ff AM |
874 | switch (arch) |
875 | { | |
876 | case bfd_arch_sparc: | |
923f08ff AM |
877 | case bfd_arch_mips: |
878 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; | |
879 | break; | |
880 | default: | |
881 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
882 | break; | |
883 | } | |
252b5132 | 884 | |
923f08ff | 885 | return (*aout_backend_info (abfd)->set_sizes) (abfd); |
252b5132 RH |
886 | } |
887 | ||
888 | static void | |
116c20d2 | 889 | adjust_o_magic (bfd *abfd, struct internal_exec *execp) |
252b5132 RH |
890 | { |
891 | file_ptr pos = adata (abfd).exec_bytes_size; | |
892 | bfd_vma vma = 0; | |
893 | int pad = 0; | |
dda2980f AM |
894 | asection *text = obj_textsec (abfd); |
895 | asection *data = obj_datasec (abfd); | |
896 | asection *bss = obj_bsssec (abfd); | |
252b5132 RH |
897 | |
898 | /* Text. */ | |
dda2980f AM |
899 | text->filepos = pos; |
900 | if (!text->user_set_vma) | |
901 | text->vma = vma; | |
252b5132 | 902 | else |
dda2980f | 903 | vma = text->vma; |
252b5132 | 904 | |
dda2980f AM |
905 | pos += execp->a_text; |
906 | vma += execp->a_text; | |
252b5132 RH |
907 | |
908 | /* Data. */ | |
dda2980f | 909 | if (!data->user_set_vma) |
252b5132 | 910 | { |
252b5132 RH |
911 | pos += pad; |
912 | vma += pad; | |
dda2980f | 913 | data->vma = vma; |
252b5132 RH |
914 | } |
915 | else | |
dda2980f AM |
916 | vma = data->vma; |
917 | execp->a_text += pad; | |
918 | ||
919 | data->filepos = pos; | |
920 | pos += data->size; | |
921 | vma += data->size; | |
252b5132 RH |
922 | |
923 | /* BSS. */ | |
dda2980f | 924 | if (!bss->user_set_vma) |
252b5132 | 925 | { |
252b5132 RH |
926 | pos += pad; |
927 | vma += pad; | |
dda2980f | 928 | bss->vma = vma; |
252b5132 RH |
929 | } |
930 | else | |
931 | { | |
08da05b0 | 932 | /* The VMA of the .bss section is set by the VMA of the |
07d6d2b8 AM |
933 | .data section plus the size of the .data section. We may |
934 | need to add padding bytes to make this true. */ | |
dda2980f AM |
935 | pad = bss->vma - vma; |
936 | if (pad < 0) | |
937 | pad = 0; | |
938 | pos += pad; | |
252b5132 | 939 | } |
dda2980f AM |
940 | execp->a_data = data->size + pad; |
941 | bss->filepos = pos; | |
942 | execp->a_bss = bss->size; | |
252b5132 | 943 | |
bbb1afc8 | 944 | N_SET_MAGIC (execp, OMAGIC); |
252b5132 RH |
945 | } |
946 | ||
947 | static void | |
116c20d2 | 948 | adjust_z_magic (bfd *abfd, struct internal_exec *execp) |
252b5132 RH |
949 | { |
950 | bfd_size_type data_pad, text_pad; | |
951 | file_ptr text_end; | |
dc810e39 | 952 | const struct aout_backend_data *abdp; |
116c20d2 NC |
953 | /* TRUE if text includes exec header. */ |
954 | bfd_boolean ztih; | |
dda2980f AM |
955 | asection *text = obj_textsec (abfd); |
956 | asection *data = obj_datasec (abfd); | |
957 | asection *bss = obj_bsssec (abfd); | |
0ef5a5bd | 958 | |
252b5132 RH |
959 | abdp = aout_backend_info (abfd); |
960 | ||
961 | /* Text. */ | |
962 | ztih = (abdp != NULL | |
963 | && (abdp->text_includes_header | |
964 | || obj_aout_subformat (abfd) == q_magic_format)); | |
dda2980f AM |
965 | text->filepos = (ztih |
966 | ? adata (abfd).exec_bytes_size | |
967 | : adata (abfd).zmagic_disk_block_size); | |
968 | if (!text->user_set_vma) | |
252b5132 RH |
969 | { |
970 | /* ?? Do we really need to check for relocs here? */ | |
dda2980f AM |
971 | text->vma = ((abfd->flags & HAS_RELOC) |
972 | ? 0 | |
973 | : (ztih | |
974 | ? abdp->default_text_vma + adata (abfd).exec_bytes_size | |
975 | : abdp->default_text_vma)); | |
252b5132 RH |
976 | text_pad = 0; |
977 | } | |
978 | else | |
979 | { | |
980 | /* The .text section is being loaded at an unusual address. We | |
07d6d2b8 AM |
981 | may need to pad it such that the .data section starts at a page |
982 | boundary. */ | |
252b5132 | 983 | if (ztih) |
dda2980f | 984 | text_pad = ((text->filepos - text->vma) |
252b5132 RH |
985 | & (adata (abfd).page_size - 1)); |
986 | else | |
dda2980f | 987 | text_pad = (-text->vma |
252b5132 RH |
988 | & (adata (abfd).page_size - 1)); |
989 | } | |
990 | ||
991 | /* Find start of data. */ | |
992 | if (ztih) | |
993 | { | |
dda2980f | 994 | text_end = text->filepos + execp->a_text; |
252b5132 RH |
995 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
996 | } | |
997 | else | |
998 | { | |
999 | /* Note that if page_size == zmagic_disk_block_size, then | |
1000 | filepos == page_size, and this case is the same as the ztih | |
1001 | case. */ | |
dda2980f | 1002 | text_end = execp->a_text; |
252b5132 | 1003 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
dda2980f | 1004 | text_end += text->filepos; |
252b5132 | 1005 | } |
dda2980f | 1006 | execp->a_text += text_pad; |
252b5132 RH |
1007 | |
1008 | /* Data. */ | |
dda2980f | 1009 | if (!data->user_set_vma) |
252b5132 RH |
1010 | { |
1011 | bfd_vma vma; | |
dda2980f AM |
1012 | vma = text->vma + execp->a_text; |
1013 | data->vma = BFD_ALIGN (vma, adata (abfd).segment_size); | |
252b5132 RH |
1014 | } |
1015 | if (abdp && abdp->zmagic_mapped_contiguous) | |
1016 | { | |
dda2980f | 1017 | text_pad = data->vma - (text->vma + execp->a_text); |
dee0a8f4 NC |
1018 | /* Only pad the text section if the data |
1019 | section is going to be placed after it. */ | |
1020 | if (text_pad > 0) | |
dda2980f | 1021 | execp->a_text += text_pad; |
252b5132 | 1022 | } |
dda2980f | 1023 | data->filepos = text->filepos + execp->a_text; |
0ef5a5bd | 1024 | |
252b5132 | 1025 | /* Fix up exec header while we're at it. */ |
252b5132 | 1026 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) |
923f08ff | 1027 | execp->a_text += adata (abfd).exec_bytes_size; |
252b5132 | 1028 | if (obj_aout_subformat (abfd) == q_magic_format) |
bbb1afc8 | 1029 | N_SET_MAGIC (execp, QMAGIC); |
252b5132 | 1030 | else |
bbb1afc8 | 1031 | N_SET_MAGIC (execp, ZMAGIC); |
252b5132 RH |
1032 | |
1033 | /* Spec says data section should be rounded up to page boundary. */ | |
dda2980f AM |
1034 | execp->a_data = align_power (data->size, bss->alignment_power); |
1035 | execp->a_data = BFD_ALIGN (execp->a_data, adata (abfd).page_size); | |
1036 | data_pad = execp->a_data - data->size; | |
252b5132 RH |
1037 | |
1038 | /* BSS. */ | |
dda2980f AM |
1039 | if (!bss->user_set_vma) |
1040 | bss->vma = data->vma + execp->a_data; | |
252b5132 RH |
1041 | /* If the BSS immediately follows the data section and extra space |
1042 | in the page is left after the data section, fudge data | |
1043 | in the header so that the bss section looks smaller by that | |
1044 | amount. We'll start the bss section there, and lie to the OS. | |
1045 | (Note that a linker script, as well as the above assignment, | |
1046 | could have explicitly set the BSS vma to immediately follow | |
1047 | the data section.) */ | |
dda2980f AM |
1048 | if (align_power (bss->vma, bss->alignment_power) == data->vma + execp->a_data) |
1049 | execp->a_bss = data_pad > bss->size ? 0 : bss->size - data_pad; | |
252b5132 | 1050 | else |
dda2980f | 1051 | execp->a_bss = bss->size; |
252b5132 RH |
1052 | } |
1053 | ||
1054 | static void | |
116c20d2 | 1055 | adjust_n_magic (bfd *abfd, struct internal_exec *execp) |
252b5132 | 1056 | { |
923f08ff | 1057 | file_ptr pos = adata (abfd).exec_bytes_size; |
252b5132 RH |
1058 | bfd_vma vma = 0; |
1059 | int pad; | |
dda2980f AM |
1060 | asection *text = obj_textsec (abfd); |
1061 | asection *data = obj_datasec (abfd); | |
1062 | asection *bss = obj_bsssec (abfd); | |
0ef5a5bd | 1063 | |
252b5132 | 1064 | /* Text. */ |
dda2980f AM |
1065 | text->filepos = pos; |
1066 | if (!text->user_set_vma) | |
1067 | text->vma = vma; | |
252b5132 | 1068 | else |
dda2980f AM |
1069 | vma = text->vma; |
1070 | pos += execp->a_text; | |
1071 | vma += execp->a_text; | |
252b5132 RH |
1072 | |
1073 | /* Data. */ | |
dda2980f AM |
1074 | data->filepos = pos; |
1075 | if (!data->user_set_vma) | |
1076 | data->vma = BFD_ALIGN (vma, adata (abfd).segment_size); | |
1077 | vma = data->vma; | |
0ef5a5bd | 1078 | |
252b5132 | 1079 | /* Since BSS follows data immediately, see if it needs alignment. */ |
dda2980f AM |
1080 | vma += data->size; |
1081 | pad = align_power (vma, bss->alignment_power) - vma; | |
1082 | execp->a_data = data->size + pad; | |
1083 | pos += execp->a_data; | |
252b5132 RH |
1084 | |
1085 | /* BSS. */ | |
dda2980f AM |
1086 | if (!bss->user_set_vma) |
1087 | bss->vma = vma; | |
252b5132 | 1088 | else |
dda2980f | 1089 | vma = bss->vma; |
252b5132 RH |
1090 | |
1091 | /* Fix up exec header. */ | |
dda2980f | 1092 | execp->a_bss = bss->size; |
bbb1afc8 | 1093 | N_SET_MAGIC (execp, NMAGIC); |
252b5132 RH |
1094 | } |
1095 | ||
b34976b6 | 1096 | bfd_boolean |
3a8c4a5b | 1097 | NAME (aout, adjust_sizes_and_vmas) (bfd *abfd) |
252b5132 RH |
1098 | { |
1099 | struct internal_exec *execp = exec_hdr (abfd); | |
1100 | ||
116c20d2 | 1101 | if (! NAME (aout, make_sections) (abfd)) |
b34976b6 | 1102 | return FALSE; |
252b5132 | 1103 | |
923f08ff | 1104 | if (adata (abfd).magic != undecided_magic) |
b34976b6 | 1105 | return TRUE; |
252b5132 | 1106 | |
dda2980f AM |
1107 | execp->a_text = align_power (obj_textsec (abfd)->size, |
1108 | obj_textsec (abfd)->alignment_power); | |
252b5132 | 1109 | |
252b5132 RH |
1110 | /* Rule (heuristic) for when to pad to a new page. Note that there |
1111 | are (at least) two ways demand-paged (ZMAGIC) files have been | |
1112 | handled. Most Berkeley-based systems start the text segment at | |
1113 | (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text | |
1114 | segment right after the exec header; the latter is counted in the | |
1115 | text segment size, and is paged in by the kernel with the rest of | |
0ef5a5bd | 1116 | the text. */ |
252b5132 RH |
1117 | |
1118 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1119 | to understand enough to implement it. Better would probably be to go | |
1120 | right from BFD flags to alignment/positioning characteristics. But the | |
1121 | old code was sloppy enough about handling the flags, and had enough | |
1122 | other magic, that it was a little hard for me to understand. I think | |
1123 | I understand it better now, but I haven't time to do the cleanup this | |
1124 | minute. */ | |
1125 | ||
1126 | if (abfd->flags & D_PAGED) | |
1127 | /* Whether or not WP_TEXT is set -- let D_PAGED override. */ | |
923f08ff | 1128 | adata (abfd).magic = z_magic; |
252b5132 | 1129 | else if (abfd->flags & WP_TEXT) |
923f08ff | 1130 | adata (abfd).magic = n_magic; |
252b5132 | 1131 | else |
923f08ff | 1132 | adata (abfd).magic = o_magic; |
252b5132 RH |
1133 | |
1134 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1135 | #if __GNUC__ >= 2 | |
1136 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1137 | ({ char *str; | |
923f08ff AM |
1138 | switch (adata (abfd).magic) |
1139 | { | |
1140 | case n_magic: str = "NMAGIC"; break; | |
1141 | case o_magic: str = "OMAGIC"; break; | |
1142 | case z_magic: str = "ZMAGIC"; break; | |
1143 | default: abort (); | |
1144 | } | |
252b5132 RH |
1145 | str; |
1146 | }), | |
eea6121a | 1147 | obj_textsec (abfd)->vma, obj_textsec (abfd)->size, |
07d6d2b8 | 1148 | obj_textsec (abfd)->alignment_power, |
eea6121a | 1149 | obj_datasec (abfd)->vma, obj_datasec (abfd)->size, |
07d6d2b8 | 1150 | obj_datasec (abfd)->alignment_power, |
eea6121a | 1151 | obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size, |
07d6d2b8 | 1152 | obj_bsssec (abfd)->alignment_power); |
252b5132 RH |
1153 | #endif |
1154 | #endif | |
1155 | ||
923f08ff | 1156 | switch (adata (abfd).magic) |
252b5132 RH |
1157 | { |
1158 | case o_magic: | |
1159 | adjust_o_magic (abfd, execp); | |
1160 | break; | |
1161 | case z_magic: | |
1162 | adjust_z_magic (abfd, execp); | |
1163 | break; | |
1164 | case n_magic: | |
1165 | adjust_n_magic (abfd, execp); | |
1166 | break; | |
1167 | default: | |
1168 | abort (); | |
1169 | } | |
1170 | ||
1171 | #ifdef BFD_AOUT_DEBUG | |
1172 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
dda2980f | 1173 | obj_textsec (abfd)->vma, execp->a_text, |
07d6d2b8 | 1174 | obj_textsec (abfd)->filepos, |
dda2980f | 1175 | obj_datasec (abfd)->vma, execp->a_data, |
07d6d2b8 | 1176 | obj_datasec (abfd)->filepos, |
dda2980f | 1177 | obj_bsssec (abfd)->vma, execp->a_bss); |
252b5132 RH |
1178 | #endif |
1179 | ||
b34976b6 | 1180 | return TRUE; |
252b5132 RH |
1181 | } |
1182 | ||
1183 | /* | |
1184 | FUNCTION | |
1185 | aout_@var{size}_new_section_hook | |
1186 | ||
1187 | SYNOPSIS | |
07d6d2b8 | 1188 | bfd_boolean aout_@var{size}_new_section_hook, |
252b5132 | 1189 | (bfd *abfd, |
116c20d2 | 1190 | asection *newsect); |
252b5132 RH |
1191 | |
1192 | DESCRIPTION | |
1193 | Called by the BFD in response to a @code{bfd_make_section} | |
1194 | request. | |
1195 | */ | |
b34976b6 | 1196 | bfd_boolean |
116c20d2 | 1197 | NAME (aout, new_section_hook) (bfd *abfd, asection *newsect) |
252b5132 | 1198 | { |
f7c33884 | 1199 | /* Align to double at least. */ |
923f08ff | 1200 | newsect->alignment_power = bfd_get_arch_info (abfd)->section_align_power; |
252b5132 | 1201 | |
252b5132 | 1202 | if (bfd_get_format (abfd) == bfd_object) |
f7c33884 NC |
1203 | { |
1204 | if (obj_textsec (abfd) == NULL && !strcmp (newsect->name, ".text")) | |
1205 | { | |
1206 | obj_textsec (abfd)= newsect; | |
1207 | newsect->target_index = N_TEXT; | |
f7c33884 | 1208 | } |
f592407e | 1209 | else if (obj_datasec (abfd) == NULL && !strcmp (newsect->name, ".data")) |
f7c33884 NC |
1210 | { |
1211 | obj_datasec (abfd) = newsect; | |
1212 | newsect->target_index = N_DATA; | |
f7c33884 | 1213 | } |
f592407e | 1214 | else if (obj_bsssec (abfd) == NULL && !strcmp (newsect->name, ".bss")) |
f7c33884 NC |
1215 | { |
1216 | obj_bsssec (abfd) = newsect; | |
1217 | newsect->target_index = N_BSS; | |
f7c33884 NC |
1218 | } |
1219 | } | |
252b5132 | 1220 | |
f7c33884 | 1221 | /* We allow more than three sections internally. */ |
f592407e | 1222 | return _bfd_generic_new_section_hook (abfd, newsect); |
252b5132 RH |
1223 | } |
1224 | ||
b34976b6 | 1225 | bfd_boolean |
116c20d2 NC |
1226 | NAME (aout, set_section_contents) (bfd *abfd, |
1227 | sec_ptr section, | |
1228 | const void * location, | |
1229 | file_ptr offset, | |
1230 | bfd_size_type count) | |
252b5132 | 1231 | { |
252b5132 RH |
1232 | if (! abfd->output_has_begun) |
1233 | { | |
3a8c4a5b | 1234 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
b34976b6 | 1235 | return FALSE; |
252b5132 RH |
1236 | } |
1237 | ||
1238 | if (section == obj_bsssec (abfd)) | |
1239 | { | |
1240 | bfd_set_error (bfd_error_no_contents); | |
b34976b6 | 1241 | return FALSE; |
252b5132 RH |
1242 | } |
1243 | ||
1244 | if (section != obj_textsec (abfd) | |
1245 | && section != obj_datasec (abfd)) | |
1246 | { | |
e6af3a53 NC |
1247 | if (aout_section_merge_with_text_p (abfd, section)) |
1248 | section->filepos = obj_textsec (abfd)->filepos + | |
1249 | (section->vma - obj_textsec (abfd)->vma); | |
1250 | else | |
1251 | { | |
4eca0228 | 1252 | _bfd_error_handler |
695344c0 | 1253 | /* xgettext:c-format */ |
871b3ab2 | 1254 | (_("%pB: can not represent section `%pA' in a.out object file format"), |
dae82561 | 1255 | abfd, section); |
07d6d2b8 AM |
1256 | bfd_set_error (bfd_error_nonrepresentable_section); |
1257 | return FALSE; | |
e6af3a53 | 1258 | } |
252b5132 RH |
1259 | } |
1260 | ||
1261 | if (count != 0) | |
1262 | { | |
1263 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 | |
dc810e39 | 1264 | || bfd_bwrite (location, count, abfd) != count) |
b34976b6 | 1265 | return FALSE; |
252b5132 RH |
1266 | } |
1267 | ||
b34976b6 | 1268 | return TRUE; |
252b5132 RH |
1269 | } |
1270 | \f | |
1271 | /* Read the external symbols from an a.out file. */ | |
1272 | ||
b34976b6 | 1273 | static bfd_boolean |
116c20d2 | 1274 | aout_get_external_symbols (bfd *abfd) |
252b5132 | 1275 | { |
116c20d2 | 1276 | if (obj_aout_external_syms (abfd) == NULL) |
252b5132 RH |
1277 | { |
1278 | bfd_size_type count; | |
1279 | struct external_nlist *syms; | |
7c53fd1c | 1280 | bfd_size_type amt = exec_hdr (abfd)->a_syms; |
252b5132 | 1281 | |
7c53fd1c | 1282 | count = amt / EXTERNAL_NLIST_SIZE; |
6b8f0fd5 MS |
1283 | if (count == 0) |
1284 | return TRUE; /* Nothing to do. */ | |
252b5132 RH |
1285 | |
1286 | #ifdef USE_MMAP | |
7c53fd1c | 1287 | if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), amt, |
b34976b6 AM |
1288 | &obj_aout_sym_window (abfd), TRUE)) |
1289 | return FALSE; | |
252b5132 RH |
1290 | syms = (struct external_nlist *) obj_aout_sym_window (abfd).data; |
1291 | #else | |
1292 | /* We allocate using malloc to make the values easy to free | |
1293 | later on. If we put them on the objalloc it might not be | |
1294 | possible to free them. */ | |
2bb3687b AM |
1295 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0) |
1296 | return FALSE; | |
1297 | syms = (struct external_nlist *) _bfd_malloc_and_read (abfd, amt, amt); | |
6b8f0fd5 | 1298 | if (syms == NULL) |
b34976b6 | 1299 | return FALSE; |
252b5132 RH |
1300 | #endif |
1301 | ||
1302 | obj_aout_external_syms (abfd) = syms; | |
1303 | obj_aout_external_sym_count (abfd) = count; | |
1304 | } | |
0ef5a5bd | 1305 | |
252b5132 RH |
1306 | if (obj_aout_external_strings (abfd) == NULL |
1307 | && exec_hdr (abfd)->a_syms != 0) | |
1308 | { | |
1309 | unsigned char string_chars[BYTES_IN_WORD]; | |
1310 | bfd_size_type stringsize; | |
1311 | char *strings; | |
dc810e39 | 1312 | bfd_size_type amt = BYTES_IN_WORD; |
252b5132 RH |
1313 | |
1314 | /* Get the size of the strings. */ | |
1315 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
116c20d2 | 1316 | || bfd_bread ((void *) string_chars, amt, abfd) != amt) |
b34976b6 | 1317 | return FALSE; |
252b5132 | 1318 | stringsize = GET_WORD (abfd, string_chars); |
0301ce14 AM |
1319 | if (stringsize == 0) |
1320 | stringsize = 1; | |
1321 | else if (stringsize < BYTES_IN_WORD | |
1322 | || (size_t) stringsize != stringsize) | |
1323 | { | |
1324 | bfd_set_error (bfd_error_bad_value); | |
1325 | return FALSE; | |
1326 | } | |
252b5132 RH |
1327 | |
1328 | #ifdef USE_MMAP | |
0301ce14 | 1329 | if (stringsize >= BYTES_IN_WORD) |
252b5132 | 1330 | { |
bf82069d | 1331 | if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize + 1, |
0301ce14 AM |
1332 | &obj_aout_string_window (abfd), TRUE)) |
1333 | return FALSE; | |
1334 | strings = (char *) obj_aout_string_window (abfd).data; | |
252b5132 | 1335 | } |
0301ce14 | 1336 | else |
252b5132 | 1337 | #endif |
0301ce14 | 1338 | { |
bf82069d | 1339 | strings = (char *) bfd_malloc (stringsize + 1); |
0301ce14 AM |
1340 | if (strings == NULL) |
1341 | return FALSE; | |
1342 | ||
1343 | if (stringsize >= BYTES_IN_WORD) | |
1344 | { | |
1345 | /* Keep the string count in the buffer for convenience | |
1346 | when indexing with e_strx. */ | |
1347 | amt = stringsize - BYTES_IN_WORD; | |
1348 | if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt) | |
1349 | { | |
1350 | free (strings); | |
1351 | return FALSE; | |
1352 | } | |
1353 | } | |
1354 | } | |
252b5132 RH |
1355 | /* Ensure that a zero index yields an empty string. */ |
1356 | strings[0] = '\0'; | |
1357 | ||
bf82069d NC |
1358 | /* Ensure that the string buffer is NUL terminated. */ |
1359 | strings[stringsize] = 0; | |
252b5132 RH |
1360 | |
1361 | obj_aout_external_strings (abfd) = strings; | |
1362 | obj_aout_external_string_size (abfd) = stringsize; | |
1363 | } | |
1364 | ||
b34976b6 | 1365 | return TRUE; |
252b5132 RH |
1366 | } |
1367 | ||
1368 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type | |
1369 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1370 | nlist structure. This function is responsible for setting | |
1371 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
1372 | ||
b34976b6 | 1373 | static bfd_boolean |
116c20d2 | 1374 | translate_from_native_sym_flags (bfd *abfd, aout_symbol_type *cache_ptr) |
252b5132 RH |
1375 | { |
1376 | flagword visible; | |
1377 | ||
1378 | if ((cache_ptr->type & N_STAB) != 0 | |
1379 | || cache_ptr->type == N_FN) | |
1380 | { | |
1381 | asection *sec; | |
1382 | ||
1383 | /* This is a debugging symbol. */ | |
252b5132 RH |
1384 | cache_ptr->symbol.flags = BSF_DEBUGGING; |
1385 | ||
1386 | /* Work out the symbol section. */ | |
1387 | switch (cache_ptr->type & N_TYPE) | |
1388 | { | |
1389 | case N_TEXT: | |
1390 | case N_FN: | |
1391 | sec = obj_textsec (abfd); | |
1392 | break; | |
1393 | case N_DATA: | |
1394 | sec = obj_datasec (abfd); | |
1395 | break; | |
1396 | case N_BSS: | |
1397 | sec = obj_bsssec (abfd); | |
1398 | break; | |
1399 | default: | |
1400 | case N_ABS: | |
1401 | sec = bfd_abs_section_ptr; | |
1402 | break; | |
1403 | } | |
1404 | ||
1405 | cache_ptr->symbol.section = sec; | |
1406 | cache_ptr->symbol.value -= sec->vma; | |
1407 | ||
b34976b6 | 1408 | return TRUE; |
252b5132 RH |
1409 | } |
1410 | ||
1411 | /* Get the default visibility. This does not apply to all types, so | |
1412 | we just hold it in a local variable to use if wanted. */ | |
1413 | if ((cache_ptr->type & N_EXT) == 0) | |
1414 | visible = BSF_LOCAL; | |
1415 | else | |
1416 | visible = BSF_GLOBAL; | |
1417 | ||
1418 | switch (cache_ptr->type) | |
1419 | { | |
1420 | default: | |
1421 | case N_ABS: case N_ABS | N_EXT: | |
1422 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1423 | cache_ptr->symbol.flags = visible; | |
1424 | break; | |
1425 | ||
1426 | case N_UNDF | N_EXT: | |
1427 | if (cache_ptr->symbol.value != 0) | |
1428 | { | |
1429 | /* This is a common symbol. */ | |
1430 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
1431 | cache_ptr->symbol.section = bfd_com_section_ptr; | |
1432 | } | |
1433 | else | |
1434 | { | |
1435 | cache_ptr->symbol.flags = 0; | |
1436 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1437 | } | |
1438 | break; | |
1439 | ||
1440 | case N_TEXT: case N_TEXT | N_EXT: | |
1441 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1442 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1443 | cache_ptr->symbol.flags = visible; | |
1444 | break; | |
1445 | ||
1446 | /* N_SETV symbols used to represent set vectors placed in the | |
1447 | data section. They are no longer generated. Theoretically, | |
1448 | it was possible to extract the entries and combine them with | |
1449 | new ones, although I don't know if that was ever actually | |
1450 | done. Unless that feature is restored, treat them as data | |
1451 | symbols. */ | |
1452 | case N_SETV: case N_SETV | N_EXT: | |
1453 | case N_DATA: case N_DATA | N_EXT: | |
1454 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1455 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1456 | cache_ptr->symbol.flags = visible; | |
1457 | break; | |
1458 | ||
1459 | case N_BSS: case N_BSS | N_EXT: | |
1460 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1461 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1462 | cache_ptr->symbol.flags = visible; | |
1463 | break; | |
1464 | ||
1465 | case N_SETA: case N_SETA | N_EXT: | |
1466 | case N_SETT: case N_SETT | N_EXT: | |
1467 | case N_SETD: case N_SETD | N_EXT: | |
1468 | case N_SETB: case N_SETB | N_EXT: | |
1469 | { | |
1470 | /* This code is no longer needed. It used to be used to make | |
07d6d2b8 AM |
1471 | the linker handle set symbols, but they are now handled in |
1472 | the add_symbols routine instead. */ | |
252b5132 RH |
1473 | switch (cache_ptr->type & N_TYPE) |
1474 | { | |
1475 | case N_SETA: | |
1476 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1477 | break; | |
1478 | case N_SETT: | |
1479 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1480 | break; | |
1481 | case N_SETD: | |
1482 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1483 | break; | |
1484 | case N_SETB: | |
1485 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1486 | break; | |
1487 | } | |
1488 | ||
1489 | cache_ptr->symbol.flags |= BSF_CONSTRUCTOR; | |
1490 | } | |
1491 | break; | |
1492 | ||
1493 | case N_WARNING: | |
1494 | /* This symbol is the text of a warning message. The next | |
1495 | symbol is the symbol to associate the warning with. If a | |
1496 | reference is made to that symbol, a warning is issued. */ | |
1497 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
1498 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1499 | break; | |
1500 | ||
1501 | case N_INDR: case N_INDR | N_EXT: | |
1502 | /* An indirect symbol. This consists of two symbols in a row. | |
1503 | The first symbol is the name of the indirection. The second | |
1504 | symbol is the name of the target. A reference to the first | |
1505 | symbol becomes a reference to the second. */ | |
1506 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible; | |
1507 | cache_ptr->symbol.section = bfd_ind_section_ptr; | |
1508 | break; | |
1509 | ||
1510 | case N_WEAKU: | |
1511 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1512 | cache_ptr->symbol.flags = BSF_WEAK; | |
1513 | break; | |
1514 | ||
1515 | case N_WEAKA: | |
1516 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1517 | cache_ptr->symbol.flags = BSF_WEAK; | |
1518 | break; | |
1519 | ||
1520 | case N_WEAKT: | |
1521 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1522 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1523 | cache_ptr->symbol.flags = BSF_WEAK; | |
1524 | break; | |
1525 | ||
1526 | case N_WEAKD: | |
1527 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1528 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1529 | cache_ptr->symbol.flags = BSF_WEAK; | |
1530 | break; | |
1531 | ||
1532 | case N_WEAKB: | |
1533 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1534 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1535 | cache_ptr->symbol.flags = BSF_WEAK; | |
1536 | break; | |
1537 | } | |
1538 | ||
b34976b6 | 1539 | return TRUE; |
252b5132 RH |
1540 | } |
1541 | ||
1542 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ | |
1543 | ||
b34976b6 | 1544 | static bfd_boolean |
116c20d2 NC |
1545 | translate_to_native_sym_flags (bfd *abfd, |
1546 | asymbol *cache_ptr, | |
1547 | struct external_nlist *sym_pointer) | |
252b5132 RH |
1548 | { |
1549 | bfd_vma value = cache_ptr->value; | |
1550 | asection *sec; | |
1551 | bfd_vma off; | |
1552 | ||
1553 | /* Mask out any existing type bits in case copying from one section | |
1554 | to another. */ | |
1555 | sym_pointer->e_type[0] &= ~N_TYPE; | |
1556 | ||
e6f7f6d1 | 1557 | sec = bfd_asymbol_section (cache_ptr); |
252b5132 RH |
1558 | off = 0; |
1559 | ||
1560 | if (sec == NULL) | |
1561 | { | |
1562 | /* This case occurs, e.g., for the *DEBUG* section of a COFF | |
1563 | file. */ | |
4eca0228 | 1564 | _bfd_error_handler |
695344c0 | 1565 | /* xgettext:c-format */ |
871b3ab2 | 1566 | (_("%pB: can not represent section for symbol `%s' in a.out " |
4eca0228 | 1567 | "object file format"), |
dae82561 | 1568 | abfd, |
252b5132 RH |
1569 | cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*")); |
1570 | bfd_set_error (bfd_error_nonrepresentable_section); | |
b34976b6 | 1571 | return FALSE; |
252b5132 RH |
1572 | } |
1573 | ||
1574 | if (sec->output_section != NULL) | |
1575 | { | |
1576 | off = sec->output_offset; | |
1577 | sec = sec->output_section; | |
1578 | } | |
1579 | ||
1580 | if (bfd_is_abs_section (sec)) | |
1581 | sym_pointer->e_type[0] |= N_ABS; | |
1582 | else if (sec == obj_textsec (abfd)) | |
1583 | sym_pointer->e_type[0] |= N_TEXT; | |
1584 | else if (sec == obj_datasec (abfd)) | |
1585 | sym_pointer->e_type[0] |= N_DATA; | |
1586 | else if (sec == obj_bsssec (abfd)) | |
1587 | sym_pointer->e_type[0] |= N_BSS; | |
1588 | else if (bfd_is_und_section (sec)) | |
1589 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1590 | else if (bfd_is_ind_section (sec)) | |
1591 | sym_pointer->e_type[0] = N_INDR; | |
1592 | else if (bfd_is_com_section (sec)) | |
1593 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1594 | else | |
1595 | { | |
e6af3a53 NC |
1596 | if (aout_section_merge_with_text_p (abfd, sec)) |
1597 | sym_pointer->e_type[0] |= N_TEXT; | |
1598 | else | |
1599 | { | |
4eca0228 | 1600 | _bfd_error_handler |
695344c0 | 1601 | /* xgettext:c-format */ |
871b3ab2 | 1602 | (_("%pB: can not represent section `%pA' in a.out object file format"), |
dae82561 | 1603 | abfd, sec); |
07d6d2b8 AM |
1604 | bfd_set_error (bfd_error_nonrepresentable_section); |
1605 | return FALSE; | |
e6af3a53 | 1606 | } |
252b5132 RH |
1607 | } |
1608 | ||
f7c33884 | 1609 | /* Turn the symbol from section relative to absolute again. */ |
252b5132 RH |
1610 | value += sec->vma + off; |
1611 | ||
1612 | if ((cache_ptr->flags & BSF_WARNING) != 0) | |
1613 | sym_pointer->e_type[0] = N_WARNING; | |
1614 | ||
1615 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) | |
1616 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1617 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
1618 | sym_pointer->e_type[0] |= N_EXT; | |
930d924d L |
1619 | else if ((cache_ptr->flags & BSF_LOCAL) != 0) |
1620 | sym_pointer->e_type[0] &= ~N_EXT; | |
252b5132 RH |
1621 | |
1622 | if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0) | |
1623 | { | |
1624 | int type = ((aout_symbol_type *) cache_ptr)->type; | |
f7c33884 | 1625 | |
252b5132 RH |
1626 | switch (type) |
1627 | { | |
1628 | case N_ABS: type = N_SETA; break; | |
1629 | case N_TEXT: type = N_SETT; break; | |
1630 | case N_DATA: type = N_SETD; break; | |
1631 | case N_BSS: type = N_SETB; break; | |
1632 | } | |
1633 | sym_pointer->e_type[0] = type; | |
1634 | } | |
1635 | ||
1636 | if ((cache_ptr->flags & BSF_WEAK) != 0) | |
1637 | { | |
1638 | int type; | |
1639 | ||
1640 | switch (sym_pointer->e_type[0] & N_TYPE) | |
1641 | { | |
1642 | default: | |
1643 | case N_ABS: type = N_WEAKA; break; | |
1644 | case N_TEXT: type = N_WEAKT; break; | |
1645 | case N_DATA: type = N_WEAKD; break; | |
1646 | case N_BSS: type = N_WEAKB; break; | |
1647 | case N_UNDF: type = N_WEAKU; break; | |
1648 | } | |
1649 | sym_pointer->e_type[0] = type; | |
1650 | } | |
1651 | ||
923f08ff | 1652 | PUT_WORD (abfd, value, sym_pointer->e_value); |
252b5132 | 1653 | |
b34976b6 | 1654 | return TRUE; |
252b5132 RH |
1655 | } |
1656 | \f | |
0ef5a5bd | 1657 | /* Native-level interface to symbols. */ |
252b5132 RH |
1658 | |
1659 | asymbol * | |
116c20d2 | 1660 | NAME (aout, make_empty_symbol) (bfd *abfd) |
252b5132 | 1661 | { |
986f0783 | 1662 | size_t amt = sizeof (aout_symbol_type); |
116c20d2 | 1663 | |
d3ce72d0 NC |
1664 | aout_symbol_type *new_symbol = (aout_symbol_type *) bfd_zalloc (abfd, amt); |
1665 | if (!new_symbol) | |
252b5132 | 1666 | return NULL; |
d3ce72d0 | 1667 | new_symbol->symbol.the_bfd = abfd; |
252b5132 | 1668 | |
d3ce72d0 | 1669 | return &new_symbol->symbol; |
252b5132 RH |
1670 | } |
1671 | ||
1672 | /* Translate a set of internal symbols into external symbols. */ | |
1673 | ||
b34976b6 | 1674 | bfd_boolean |
116c20d2 NC |
1675 | NAME (aout, translate_symbol_table) (bfd *abfd, |
1676 | aout_symbol_type *in, | |
1677 | struct external_nlist *ext, | |
1678 | bfd_size_type count, | |
1679 | char *str, | |
1680 | bfd_size_type strsize, | |
1681 | bfd_boolean dynamic) | |
252b5132 RH |
1682 | { |
1683 | struct external_nlist *ext_end; | |
1684 | ||
1685 | ext_end = ext + count; | |
1686 | for (; ext < ext_end; ext++, in++) | |
1687 | { | |
1688 | bfd_vma x; | |
1689 | ||
1690 | x = GET_WORD (abfd, ext->e_strx); | |
1691 | in->symbol.the_bfd = abfd; | |
1692 | ||
1693 | /* For the normal symbols, the zero index points at the number | |
1694 | of bytes in the string table but is to be interpreted as the | |
1695 | null string. For the dynamic symbols, the number of bytes in | |
1696 | the string table is stored in the __DYNAMIC structure and the | |
1697 | zero index points at an actual string. */ | |
1698 | if (x == 0 && ! dynamic) | |
1699 | in->symbol.name = ""; | |
1700 | else if (x < strsize) | |
1701 | in->symbol.name = str + x; | |
1702 | else | |
0d329c0a AM |
1703 | { |
1704 | _bfd_error_handler | |
1705 | (_("%pB: invalid string offset %" PRIu64 " >= %" PRIu64), | |
1706 | abfd, (uint64_t) x, (uint64_t) strsize); | |
1707 | bfd_set_error (bfd_error_bad_value); | |
1708 | return FALSE; | |
1709 | } | |
252b5132 RH |
1710 | |
1711 | in->symbol.value = GET_SWORD (abfd, ext->e_value); | |
dc810e39 AM |
1712 | in->desc = H_GET_16 (abfd, ext->e_desc); |
1713 | in->other = H_GET_8 (abfd, ext->e_other); | |
1714 | in->type = H_GET_8 (abfd, ext->e_type); | |
252b5132 RH |
1715 | in->symbol.udata.p = NULL; |
1716 | ||
1717 | if (! translate_from_native_sym_flags (abfd, in)) | |
b34976b6 | 1718 | return FALSE; |
252b5132 RH |
1719 | |
1720 | if (dynamic) | |
1721 | in->symbol.flags |= BSF_DYNAMIC; | |
1722 | } | |
1723 | ||
b34976b6 | 1724 | return TRUE; |
252b5132 RH |
1725 | } |
1726 | ||
1727 | /* We read the symbols into a buffer, which is discarded when this | |
1728 | function exits. We read the strings into a buffer large enough to | |
0ef5a5bd | 1729 | hold them all plus all the cached symbol entries. */ |
252b5132 | 1730 | |
b34976b6 | 1731 | bfd_boolean |
116c20d2 | 1732 | NAME (aout, slurp_symbol_table) (bfd *abfd) |
252b5132 RH |
1733 | { |
1734 | struct external_nlist *old_external_syms; | |
1735 | aout_symbol_type *cached; | |
dc810e39 | 1736 | bfd_size_type cached_size; |
252b5132 | 1737 | |
f7c33884 | 1738 | /* If there's no work to be done, don't do any. */ |
116c20d2 | 1739 | if (obj_aout_symbols (abfd) != NULL) |
b34976b6 | 1740 | return TRUE; |
252b5132 RH |
1741 | |
1742 | old_external_syms = obj_aout_external_syms (abfd); | |
1743 | ||
1744 | if (! aout_get_external_symbols (abfd)) | |
b34976b6 | 1745 | return FALSE; |
252b5132 | 1746 | |
dc810e39 | 1747 | cached_size = obj_aout_external_sym_count (abfd); |
87b32780 MS |
1748 | if (cached_size == 0) |
1749 | return TRUE; /* Nothing to do. */ | |
1750 | ||
dc810e39 | 1751 | cached_size *= sizeof (aout_symbol_type); |
a50b1753 | 1752 | cached = (aout_symbol_type *) bfd_zmalloc (cached_size); |
87b32780 | 1753 | if (cached == NULL) |
b34976b6 | 1754 | return FALSE; |
252b5132 RH |
1755 | |
1756 | /* Convert from external symbol information to internal. */ | |
116c20d2 | 1757 | if (! (NAME (aout, translate_symbol_table) |
252b5132 RH |
1758 | (abfd, cached, |
1759 | obj_aout_external_syms (abfd), | |
1760 | obj_aout_external_sym_count (abfd), | |
1761 | obj_aout_external_strings (abfd), | |
1762 | obj_aout_external_string_size (abfd), | |
b34976b6 | 1763 | FALSE))) |
252b5132 RH |
1764 | { |
1765 | free (cached); | |
b34976b6 | 1766 | return FALSE; |
252b5132 RH |
1767 | } |
1768 | ||
ed48ec2e | 1769 | abfd->symcount = obj_aout_external_sym_count (abfd); |
252b5132 RH |
1770 | |
1771 | obj_aout_symbols (abfd) = cached; | |
1772 | ||
1773 | /* It is very likely that anybody who calls this function will not | |
1774 | want the external symbol information, so if it was allocated | |
1775 | because of our call to aout_get_external_symbols, we free it up | |
1776 | right away to save space. */ | |
116c20d2 NC |
1777 | if (old_external_syms == NULL |
1778 | && obj_aout_external_syms (abfd) != NULL) | |
252b5132 RH |
1779 | { |
1780 | #ifdef USE_MMAP | |
1781 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
1782 | #else | |
1783 | free (obj_aout_external_syms (abfd)); | |
1784 | #endif | |
1785 | obj_aout_external_syms (abfd) = NULL; | |
1786 | } | |
1787 | ||
b34976b6 | 1788 | return TRUE; |
252b5132 RH |
1789 | } |
1790 | \f | |
1791 | /* We use a hash table when writing out symbols so that we only write | |
1792 | out a particular string once. This helps particularly when the | |
1793 | linker writes out stabs debugging entries, because each different | |
1794 | contributing object file tends to have many duplicate stabs | |
1795 | strings. | |
1796 | ||
1797 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it | |
1798 | if BFD_TRADITIONAL_FORMAT is set. */ | |
1799 | ||
252b5132 RH |
1800 | /* Get the index of a string in a strtab, adding it if it is not |
1801 | already present. */ | |
1802 | ||
116c20d2 NC |
1803 | static inline bfd_size_type |
1804 | add_to_stringtab (bfd *abfd, | |
1805 | struct bfd_strtab_hash *tab, | |
1806 | const char *str, | |
1807 | bfd_boolean copy) | |
252b5132 | 1808 | { |
b34976b6 | 1809 | bfd_boolean hash; |
91d6fa6a | 1810 | bfd_size_type str_index; |
252b5132 RH |
1811 | |
1812 | /* An index of 0 always means the empty string. */ | |
1813 | if (str == 0 || *str == '\0') | |
1814 | return 0; | |
1815 | ||
1816 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx | |
1817 | doesn't understand a hashed string table. */ | |
b34976b6 | 1818 | hash = TRUE; |
252b5132 | 1819 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
b34976b6 | 1820 | hash = FALSE; |
252b5132 | 1821 | |
91d6fa6a | 1822 | str_index = _bfd_stringtab_add (tab, str, hash, copy); |
252b5132 | 1823 | |
91d6fa6a | 1824 | if (str_index != (bfd_size_type) -1) |
116c20d2 NC |
1825 | /* Add BYTES_IN_WORD to the return value to account for the |
1826 | space taken up by the string table size. */ | |
91d6fa6a | 1827 | str_index += BYTES_IN_WORD; |
252b5132 | 1828 | |
91d6fa6a | 1829 | return str_index; |
252b5132 RH |
1830 | } |
1831 | ||
1832 | /* Write out a strtab. ABFD is already at the right location in the | |
1833 | file. */ | |
1834 | ||
b34976b6 | 1835 | static bfd_boolean |
116c20d2 | 1836 | emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab) |
252b5132 RH |
1837 | { |
1838 | bfd_byte buffer[BYTES_IN_WORD]; | |
986f0783 | 1839 | size_t amt = BYTES_IN_WORD; |
252b5132 RH |
1840 | |
1841 | /* The string table starts with the size. */ | |
1842 | PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer); | |
116c20d2 | 1843 | if (bfd_bwrite ((void *) buffer, amt, abfd) != amt) |
b34976b6 | 1844 | return FALSE; |
252b5132 RH |
1845 | |
1846 | return _bfd_stringtab_emit (abfd, tab); | |
1847 | } | |
1848 | \f | |
b34976b6 | 1849 | bfd_boolean |
116c20d2 | 1850 | NAME (aout, write_syms) (bfd *abfd) |
252b5132 RH |
1851 | { |
1852 | unsigned int count ; | |
1853 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1854 | struct bfd_strtab_hash *strtab; | |
1855 | ||
1856 | strtab = _bfd_stringtab_init (); | |
1857 | if (strtab == NULL) | |
b34976b6 | 1858 | return FALSE; |
252b5132 RH |
1859 | |
1860 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1861 | { | |
1862 | asymbol *g = generic[count]; | |
1863 | bfd_size_type indx; | |
1864 | struct external_nlist nsp; | |
986f0783 | 1865 | size_t amt; |
252b5132 | 1866 | |
b34976b6 | 1867 | indx = add_to_stringtab (abfd, strtab, g->name, FALSE); |
252b5132 RH |
1868 | if (indx == (bfd_size_type) -1) |
1869 | goto error_return; | |
1870 | PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx); | |
1871 | ||
923f08ff | 1872 | if (bfd_asymbol_flavour (g) == abfd->xvec->flavour) |
252b5132 | 1873 | { |
923f08ff AM |
1874 | H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc); |
1875 | H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other); | |
1876 | H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type); | |
252b5132 RH |
1877 | } |
1878 | else | |
1879 | { | |
dc810e39 AM |
1880 | H_PUT_16 (abfd, 0, nsp.e_desc); |
1881 | H_PUT_8 (abfd, 0, nsp.e_other); | |
1882 | H_PUT_8 (abfd, 0, nsp.e_type); | |
252b5132 RH |
1883 | } |
1884 | ||
1885 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) | |
1886 | goto error_return; | |
1887 | ||
dc810e39 | 1888 | amt = EXTERNAL_NLIST_SIZE; |
116c20d2 | 1889 | if (bfd_bwrite ((void *) &nsp, amt, abfd) != amt) |
252b5132 RH |
1890 | goto error_return; |
1891 | ||
1892 | /* NB: `KEEPIT' currently overlays `udata.p', so set this only | |
1893 | here, at the end. */ | |
1894 | g->KEEPIT = count; | |
1895 | } | |
1896 | ||
1897 | if (! emit_stringtab (abfd, strtab)) | |
1898 | goto error_return; | |
1899 | ||
1900 | _bfd_stringtab_free (strtab); | |
1901 | ||
b34976b6 | 1902 | return TRUE; |
252b5132 | 1903 | |
dc1e8a47 | 1904 | error_return: |
252b5132 | 1905 | _bfd_stringtab_free (strtab); |
b34976b6 | 1906 | return FALSE; |
252b5132 | 1907 | } |
252b5132 RH |
1908 | \f |
1909 | long | |
116c20d2 | 1910 | NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location) |
252b5132 | 1911 | { |
116c20d2 NC |
1912 | unsigned int counter = 0; |
1913 | aout_symbol_type *symbase; | |
252b5132 | 1914 | |
116c20d2 NC |
1915 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
1916 | return -1; | |
252b5132 | 1917 | |
116c20d2 NC |
1918 | for (symbase = obj_aout_symbols (abfd); |
1919 | counter++ < bfd_get_symcount (abfd); | |
1920 | ) | |
1921 | *(location++) = (asymbol *) (symbase++); | |
1922 | *location++ =0; | |
1923 | return bfd_get_symcount (abfd); | |
252b5132 | 1924 | } |
252b5132 | 1925 | \f |
f7c33884 | 1926 | /* Standard reloc stuff. */ |
0ef5a5bd | 1927 | /* Output standard relocation information to a file in target byte order. */ |
252b5132 | 1928 | |
116c20d2 NC |
1929 | extern void NAME (aout, swap_std_reloc_out) |
1930 | (bfd *, arelent *, struct reloc_std_external *); | |
252b5132 RH |
1931 | |
1932 | void | |
116c20d2 NC |
1933 | NAME (aout, swap_std_reloc_out) (bfd *abfd, |
1934 | arelent *g, | |
1935 | struct reloc_std_external *natptr) | |
252b5132 RH |
1936 | { |
1937 | int r_index; | |
1938 | asymbol *sym = *(g->sym_ptr_ptr); | |
1939 | int r_extern; | |
1940 | unsigned int r_length; | |
1941 | int r_pcrel; | |
1942 | int r_baserel, r_jmptable, r_relative; | |
1943 | asection *output_section = sym->section->output_section; | |
1944 | ||
923f08ff | 1945 | PUT_WORD (abfd, g->address, natptr->r_address); |
252b5132 | 1946 | |
e2996cc3 | 1947 | BFD_ASSERT (g->howto != NULL); |
f7c33884 NC |
1948 | r_length = g->howto->size ; /* Size as a power of two. */ |
1949 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
252b5132 RH |
1950 | /* XXX This relies on relocs coming from a.out files. */ |
1951 | r_baserel = (g->howto->type & 8) != 0; | |
1952 | r_jmptable = (g->howto->type & 16) != 0; | |
1953 | r_relative = (g->howto->type & 32) != 0; | |
1954 | ||
f7c33884 | 1955 | /* Name was clobbered by aout_write_syms to be symbol index. */ |
252b5132 RH |
1956 | |
1957 | /* If this relocation is relative to a symbol then set the | |
1958 | r_index to the symbols index, and the r_extern bit. | |
1959 | ||
1960 | Absolute symbols can come in in two ways, either as an offset | |
1961 | from the abs section, or as a symbol which has an abs value. | |
f7c33884 | 1962 | check for that here. */ |
252b5132 | 1963 | |
252b5132 RH |
1964 | if (bfd_is_com_section (output_section) |
1965 | || bfd_is_abs_section (output_section) | |
22184a77 NC |
1966 | || bfd_is_und_section (output_section) |
1967 | /* PR gas/3041 a.out relocs against weak symbols | |
1968 | must be treated as if they were against externs. */ | |
1969 | || (sym->flags & BSF_WEAK)) | |
252b5132 RH |
1970 | { |
1971 | if (bfd_abs_section_ptr->symbol == sym) | |
f7c33884 NC |
1972 | { |
1973 | /* Whoops, looked like an abs symbol, but is | |
1974 | really an offset from the abs section. */ | |
1975 | r_index = N_ABS; | |
1976 | r_extern = 0; | |
1977 | } | |
252b5132 | 1978 | else |
f7c33884 NC |
1979 | { |
1980 | /* Fill in symbol. */ | |
1981 | r_extern = 1; | |
1982 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
1983 | } | |
252b5132 RH |
1984 | } |
1985 | else | |
1986 | { | |
f7c33884 | 1987 | /* Just an ordinary section. */ |
252b5132 RH |
1988 | r_extern = 0; |
1989 | r_index = output_section->target_index; | |
1990 | } | |
1991 | ||
f7c33884 | 1992 | /* Now the fun stuff. */ |
923f08ff AM |
1993 | if (bfd_header_big_endian (abfd)) |
1994 | { | |
252b5132 RH |
1995 | natptr->r_index[0] = r_index >> 16; |
1996 | natptr->r_index[1] = r_index >> 8; | |
1997 | natptr->r_index[2] = r_index; | |
923f08ff AM |
1998 | natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) |
1999 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
2000 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
2001 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
2002 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
2003 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
2004 | } | |
2005 | else | |
2006 | { | |
2007 | natptr->r_index[2] = r_index >> 16; | |
2008 | natptr->r_index[1] = r_index >> 8; | |
2009 | natptr->r_index[0] = r_index; | |
2010 | natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
2011 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
2012 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
2013 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
2014 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
2015 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
2016 | } | |
252b5132 RH |
2017 | } |
2018 | ||
f7c33884 | 2019 | /* Extended stuff. */ |
0ef5a5bd | 2020 | /* Output extended relocation information to a file in target byte order. */ |
252b5132 | 2021 | |
116c20d2 NC |
2022 | extern void NAME (aout, swap_ext_reloc_out) |
2023 | (bfd *, arelent *, struct reloc_ext_external *); | |
252b5132 RH |
2024 | |
2025 | void | |
116c20d2 NC |
2026 | NAME (aout, swap_ext_reloc_out) (bfd *abfd, |
2027 | arelent *g, | |
2028 | struct reloc_ext_external *natptr) | |
252b5132 RH |
2029 | { |
2030 | int r_index; | |
2031 | int r_extern; | |
2032 | unsigned int r_type; | |
dc810e39 | 2033 | bfd_vma r_addend; |
252b5132 RH |
2034 | asymbol *sym = *(g->sym_ptr_ptr); |
2035 | asection *output_section = sym->section->output_section; | |
2036 | ||
2037 | PUT_WORD (abfd, g->address, natptr->r_address); | |
2038 | ||
2039 | r_type = (unsigned int) g->howto->type; | |
2040 | ||
2041 | r_addend = g->addend; | |
2042 | if ((sym->flags & BSF_SECTION_SYM) != 0) | |
2043 | r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma; | |
2044 | ||
2045 | /* If this relocation is relative to a symbol then set the | |
2046 | r_index to the symbols index, and the r_extern bit. | |
2047 | ||
2048 | Absolute symbols can come in in two ways, either as an offset | |
2049 | from the abs section, or as a symbol which has an abs value. | |
2050 | check for that here. */ | |
e6f7f6d1 | 2051 | if (bfd_is_abs_section (bfd_asymbol_section (sym))) |
252b5132 RH |
2052 | { |
2053 | r_extern = 0; | |
2054 | r_index = N_ABS; | |
2055 | } | |
2056 | else if ((sym->flags & BSF_SECTION_SYM) == 0) | |
2057 | { | |
e6f7f6d1 | 2058 | if (bfd_is_und_section (bfd_asymbol_section (sym)) |
252b5132 RH |
2059 | || (sym->flags & BSF_GLOBAL) != 0) |
2060 | r_extern = 1; | |
2061 | else | |
2062 | r_extern = 0; | |
2063 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
2064 | } | |
2065 | else | |
2066 | { | |
f7c33884 | 2067 | /* Just an ordinary section. */ |
252b5132 RH |
2068 | r_extern = 0; |
2069 | r_index = output_section->target_index; | |
2070 | } | |
2071 | ||
f7c33884 | 2072 | /* Now the fun stuff. */ |
923f08ff AM |
2073 | if (bfd_header_big_endian (abfd)) |
2074 | { | |
2075 | natptr->r_index[0] = r_index >> 16; | |
2076 | natptr->r_index[1] = r_index >> 8; | |
2077 | natptr->r_index[2] = r_index; | |
2078 | natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
2079 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
2080 | } | |
2081 | else | |
2082 | { | |
2083 | natptr->r_index[2] = r_index >> 16; | |
2084 | natptr->r_index[1] = r_index >> 8; | |
2085 | natptr->r_index[0] = r_index; | |
2086 | natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
2087 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE)); | |
2088 | } | |
252b5132 RH |
2089 | |
2090 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
2091 | } | |
2092 | ||
2093 | /* BFD deals internally with all things based from the section they're | |
2094 | in. so, something in 10 bytes into a text section with a base of | |
2095 | 50 would have a symbol (.text+10) and know .text vma was 50. | |
2096 | ||
2097 | Aout keeps all it's symbols based from zero, so the symbol would | |
2098 | contain 60. This macro subs the base of each section from the value | |
923f08ff AM |
2099 | to give the true offset from the section. */ |
2100 | ||
2101 | #define MOVE_ADDRESS(ad) \ | |
2102 | if (r_extern) \ | |
2103 | { \ | |
2104 | /* Undefined symbol. */ \ | |
2105 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
252b5132 | 2106 | cache_ptr->addend = ad; \ |
252b5132 | 2107 | } \ |
923f08ff AM |
2108 | else \ |
2109 | { \ | |
2110 | /* Defined, section relative. Replace symbol with pointer to \ | |
2111 | symbol which points to section. */ \ | |
2112 | switch (r_index) \ | |
2113 | { \ | |
2114 | case N_TEXT: \ | |
2115 | case N_TEXT | N_EXT: \ | |
2116 | cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \ | |
2117 | cache_ptr->addend = ad - su->textsec->vma; \ | |
2118 | break; \ | |
2119 | case N_DATA: \ | |
2120 | case N_DATA | N_EXT: \ | |
2121 | cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \ | |
2122 | cache_ptr->addend = ad - su->datasec->vma; \ | |
2123 | break; \ | |
2124 | case N_BSS: \ | |
2125 | case N_BSS | N_EXT: \ | |
2126 | cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \ | |
2127 | cache_ptr->addend = ad - su->bsssec->vma; \ | |
2128 | break; \ | |
2129 | default: \ | |
2130 | case N_ABS: \ | |
2131 | case N_ABS | N_EXT: \ | |
2132 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ | |
2133 | cache_ptr->addend = ad; \ | |
2134 | break; \ | |
2135 | } \ | |
2136 | } | |
252b5132 RH |
2137 | |
2138 | void | |
116c20d2 NC |
2139 | NAME (aout, swap_ext_reloc_in) (bfd *abfd, |
2140 | struct reloc_ext_external *bytes, | |
2141 | arelent *cache_ptr, | |
2142 | asymbol **symbols, | |
2143 | bfd_size_type symcount) | |
252b5132 RH |
2144 | { |
2145 | unsigned int r_index; | |
2146 | int r_extern; | |
2147 | unsigned int r_type; | |
2148 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2149 | ||
2150 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
2151 | ||
f7c33884 | 2152 | /* Now the fun stuff. */ |
923f08ff AM |
2153 | if (bfd_header_big_endian (abfd)) |
2154 | { | |
d45913a0 DA |
2155 | r_index = (((unsigned int) bytes->r_index[0] << 16) |
2156 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2157 | | bytes->r_index[2]); |
2158 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
2159 | r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
2160 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
2161 | } | |
2162 | else | |
2163 | { | |
d45913a0 DA |
2164 | r_index = (((unsigned int) bytes->r_index[2] << 16) |
2165 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2166 | | bytes->r_index[0]); |
2167 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
2168 | r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
2169 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
2170 | } | |
252b5132 | 2171 | |
ad756e3f AM |
2172 | if (r_type < TABLE_SIZE (howto_table_ext)) |
2173 | cache_ptr->howto = howto_table_ext + r_type; | |
2174 | else | |
2175 | cache_ptr->howto = NULL; | |
252b5132 RH |
2176 | |
2177 | /* Base relative relocs are always against the symbol table, | |
2178 | regardless of the setting of r_extern. r_extern just reflects | |
2179 | whether the symbol the reloc is against is local or global. */ | |
d45913a0 DA |
2180 | if (r_type == (unsigned int) RELOC_BASE10 |
2181 | || r_type == (unsigned int) RELOC_BASE13 | |
2182 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
2183 | r_extern = 1; |
2184 | ||
2185 | if (r_extern && r_index > symcount) | |
2186 | { | |
2187 | /* We could arrange to return an error, but it might be useful | |
07d6d2b8 | 2188 | to see the file even if it is bad. */ |
252b5132 RH |
2189 | r_extern = 0; |
2190 | r_index = N_ABS; | |
2191 | } | |
2192 | ||
923f08ff | 2193 | MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend)); |
252b5132 RH |
2194 | } |
2195 | ||
2196 | void | |
116c20d2 NC |
2197 | NAME (aout, swap_std_reloc_in) (bfd *abfd, |
2198 | struct reloc_std_external *bytes, | |
2199 | arelent *cache_ptr, | |
2200 | asymbol **symbols, | |
2201 | bfd_size_type symcount) | |
252b5132 RH |
2202 | { |
2203 | unsigned int r_index; | |
2204 | int r_extern; | |
2205 | unsigned int r_length; | |
2206 | int r_pcrel; | |
2207 | int r_baserel, r_jmptable, r_relative; | |
2208 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2209 | unsigned int howto_idx; | |
2210 | ||
dc810e39 | 2211 | cache_ptr->address = H_GET_32 (abfd, bytes->r_address); |
252b5132 | 2212 | |
f7c33884 | 2213 | /* Now the fun stuff. */ |
923f08ff AM |
2214 | if (bfd_header_big_endian (abfd)) |
2215 | { | |
d45913a0 DA |
2216 | r_index = (((unsigned int) bytes->r_index[0] << 16) |
2217 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2218 | | bytes->r_index[2]); |
2219 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
2220 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
2221 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
2222 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
2223 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
2224 | r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
2225 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
2226 | } | |
2227 | else | |
2228 | { | |
d45913a0 DA |
2229 | r_index = (((unsigned int) bytes->r_index[2] << 16) |
2230 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2231 | | bytes->r_index[0]); |
2232 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
2233 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
2234 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
2235 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
2236 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
2237 | r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
2238 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
2239 | } | |
252b5132 | 2240 | |
923f08ff AM |
2241 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel |
2242 | + 16 * r_jmptable + 32 * r_relative); | |
ad756e3f AM |
2243 | if (howto_idx < TABLE_SIZE (howto_table_std)) |
2244 | { | |
2245 | cache_ptr->howto = howto_table_std + howto_idx; | |
2246 | if (cache_ptr->howto->type == (unsigned int) -1) | |
2247 | cache_ptr->howto = NULL; | |
2248 | } | |
2249 | else | |
2250 | cache_ptr->howto = NULL; | |
252b5132 RH |
2251 | |
2252 | /* Base relative relocs are always against the symbol table, | |
2253 | regardless of the setting of r_extern. r_extern just reflects | |
2254 | whether the symbol the reloc is against is local or global. */ | |
2255 | if (r_baserel) | |
2256 | r_extern = 1; | |
2257 | ||
116acb2c | 2258 | if (r_extern && r_index >= symcount) |
252b5132 RH |
2259 | { |
2260 | /* We could arrange to return an error, but it might be useful | |
116acb2c AM |
2261 | to see the file even if it is bad. FIXME: Of course this |
2262 | means that objdump -r *doesn't* see the actual reloc, and | |
2263 | objcopy silently writes a different reloc. */ | |
252b5132 RH |
2264 | r_extern = 0; |
2265 | r_index = N_ABS; | |
2266 | } | |
2267 | ||
923f08ff | 2268 | MOVE_ADDRESS (0); |
252b5132 RH |
2269 | } |
2270 | ||
2271 | /* Read and swap the relocs for a section. */ | |
2272 | ||
b34976b6 | 2273 | bfd_boolean |
116c20d2 | 2274 | NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols) |
252b5132 | 2275 | { |
dc810e39 | 2276 | bfd_size_type count; |
252b5132 | 2277 | bfd_size_type reloc_size; |
116c20d2 | 2278 | void * relocs; |
252b5132 RH |
2279 | arelent *reloc_cache; |
2280 | size_t each_size; | |
2281 | unsigned int counter = 0; | |
2282 | arelent *cache_ptr; | |
dc810e39 | 2283 | bfd_size_type amt; |
252b5132 RH |
2284 | |
2285 | if (asect->relocation) | |
b34976b6 | 2286 | return TRUE; |
252b5132 RH |
2287 | |
2288 | if (asect->flags & SEC_CONSTRUCTOR) | |
b34976b6 | 2289 | return TRUE; |
252b5132 RH |
2290 | |
2291 | if (asect == obj_datasec (abfd)) | |
923f08ff | 2292 | reloc_size = exec_hdr (abfd)->a_drsize; |
252b5132 | 2293 | else if (asect == obj_textsec (abfd)) |
923f08ff | 2294 | reloc_size = exec_hdr (abfd)->a_trsize; |
252b5132 RH |
2295 | else if (asect == obj_bsssec (abfd)) |
2296 | reloc_size = 0; | |
2297 | else | |
2298 | { | |
2299 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 2300 | return FALSE; |
252b5132 RH |
2301 | } |
2302 | ||
252b5132 | 2303 | each_size = obj_reloc_entry_size (abfd); |
252b5132 | 2304 | count = reloc_size / each_size; |
078c4bfc MS |
2305 | if (count == 0) |
2306 | return TRUE; /* Nothing to be done. */ | |
252b5132 | 2307 | |
806470a2 | 2308 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) |
b34976b6 | 2309 | return FALSE; |
2bb3687b | 2310 | relocs = _bfd_malloc_and_read (abfd, reloc_size, reloc_size); |
078c4bfc | 2311 | if (relocs == NULL) |
806470a2 AM |
2312 | return FALSE; |
2313 | ||
806470a2 AM |
2314 | amt = count * sizeof (arelent); |
2315 | reloc_cache = (arelent *) bfd_zmalloc (amt); | |
2316 | if (reloc_cache == NULL) | |
252b5132 RH |
2317 | { |
2318 | free (relocs); | |
b34976b6 | 2319 | return FALSE; |
252b5132 RH |
2320 | } |
2321 | ||
2322 | cache_ptr = reloc_cache; | |
2323 | if (each_size == RELOC_EXT_SIZE) | |
2324 | { | |
dc810e39 | 2325 | struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; |
252b5132 RH |
2326 | |
2327 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
1642229e | 2328 | MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols, |
dc810e39 | 2329 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
2330 | } |
2331 | else | |
2332 | { | |
dc810e39 | 2333 | struct reloc_std_external *rptr = (struct reloc_std_external *) relocs; |
252b5132 RH |
2334 | |
2335 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
2336 | MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols, | |
dc810e39 | 2337 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
2338 | } |
2339 | ||
2340 | free (relocs); | |
2341 | ||
2342 | asect->relocation = reloc_cache; | |
2343 | asect->reloc_count = cache_ptr - reloc_cache; | |
2344 | ||
b34976b6 | 2345 | return TRUE; |
252b5132 RH |
2346 | } |
2347 | ||
2348 | /* Write out a relocation section into an object file. */ | |
2349 | ||
b34976b6 | 2350 | bfd_boolean |
116c20d2 | 2351 | NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section) |
252b5132 RH |
2352 | { |
2353 | arelent **generic; | |
2354 | unsigned char *native, *natptr; | |
2355 | size_t each_size; | |
2356 | ||
2357 | unsigned int count = section->reloc_count; | |
dc810e39 | 2358 | bfd_size_type natsize; |
252b5132 RH |
2359 | |
2360 | if (count == 0 || section->orelocation == NULL) | |
b34976b6 | 2361 | return TRUE; |
252b5132 RH |
2362 | |
2363 | each_size = obj_reloc_entry_size (abfd); | |
dc810e39 | 2364 | natsize = (bfd_size_type) each_size * count; |
a50b1753 | 2365 | native = (unsigned char *) bfd_zalloc (abfd, natsize); |
252b5132 | 2366 | if (!native) |
b34976b6 | 2367 | return FALSE; |
252b5132 RH |
2368 | |
2369 | generic = section->orelocation; | |
2370 | ||
2371 | if (each_size == RELOC_EXT_SIZE) | |
2372 | { | |
2373 | for (natptr = native; | |
2374 | count != 0; | |
2375 | --count, natptr += each_size, ++generic) | |
e2996cc3 | 2376 | { |
92744f05 NC |
2377 | /* PR 20921: If the howto field has not been initialised then skip |
2378 | this reloc. | |
2379 | PR 20929: Similarly for the symbol field. */ | |
2380 | if ((*generic)->howto == NULL | |
2381 | || (*generic)->sym_ptr_ptr == NULL) | |
e2996cc3 NC |
2382 | { |
2383 | bfd_set_error (bfd_error_invalid_operation); | |
dc1e8a47 AM |
2384 | _bfd_error_handler (_("%pB: attempt to write out " |
2385 | "unknown reloc type"), abfd); | |
e2996cc3 NC |
2386 | return FALSE; |
2387 | } | |
2388 | MY_swap_ext_reloc_out (abfd, *generic, | |
2389 | (struct reloc_ext_external *) natptr); | |
2390 | } | |
252b5132 RH |
2391 | } |
2392 | else | |
2393 | { | |
2394 | for (natptr = native; | |
2395 | count != 0; | |
2396 | --count, natptr += each_size, ++generic) | |
e2996cc3 | 2397 | { |
92744f05 NC |
2398 | if ((*generic)->howto == NULL |
2399 | || (*generic)->sym_ptr_ptr == NULL) | |
e2996cc3 NC |
2400 | { |
2401 | bfd_set_error (bfd_error_invalid_operation); | |
dc1e8a47 AM |
2402 | _bfd_error_handler (_("%pB: attempt to write out " |
2403 | "unknown reloc type"), abfd); | |
e2996cc3 NC |
2404 | return FALSE; |
2405 | } | |
2406 | MY_swap_std_reloc_out (abfd, *generic, | |
2407 | (struct reloc_std_external *) natptr); | |
2408 | } | |
252b5132 RH |
2409 | } |
2410 | ||
116c20d2 | 2411 | if (bfd_bwrite ((void *) native, natsize, abfd) != natsize) |
dc810e39 | 2412 | { |
923f08ff | 2413 | bfd_release (abfd, native); |
b34976b6 | 2414 | return FALSE; |
dc810e39 | 2415 | } |
252b5132 RH |
2416 | bfd_release (abfd, native); |
2417 | ||
b34976b6 | 2418 | return TRUE; |
252b5132 RH |
2419 | } |
2420 | ||
f7c33884 NC |
2421 | /* This is stupid. This function should be a boolean predicate. */ |
2422 | ||
252b5132 | 2423 | long |
116c20d2 NC |
2424 | NAME (aout, canonicalize_reloc) (bfd *abfd, |
2425 | sec_ptr section, | |
2426 | arelent **relptr, | |
2427 | asymbol **symbols) | |
252b5132 RH |
2428 | { |
2429 | arelent *tblptr = section->relocation; | |
2430 | unsigned int count; | |
2431 | ||
2432 | if (section == obj_bsssec (abfd)) | |
2433 | { | |
2434 | *relptr = NULL; | |
2435 | return 0; | |
2436 | } | |
2437 | ||
116c20d2 | 2438 | if (!(tblptr || NAME (aout, slurp_reloc_table) (abfd, section, symbols))) |
252b5132 RH |
2439 | return -1; |
2440 | ||
923f08ff AM |
2441 | if (section->flags & SEC_CONSTRUCTOR) |
2442 | { | |
2443 | arelent_chain *chain = section->constructor_chain; | |
2444 | for (count = 0; count < section->reloc_count; count ++) | |
2445 | { | |
2446 | *relptr ++ = &chain->relent; | |
2447 | chain = chain->next; | |
2448 | } | |
252b5132 | 2449 | } |
923f08ff AM |
2450 | else |
2451 | { | |
2452 | tblptr = section->relocation; | |
252b5132 | 2453 | |
923f08ff AM |
2454 | for (count = 0; count++ < section->reloc_count; ) |
2455 | { | |
2456 | *relptr++ = tblptr++; | |
2457 | } | |
2458 | } | |
252b5132 RH |
2459 | *relptr = 0; |
2460 | ||
2461 | return section->reloc_count; | |
2462 | } | |
2463 | ||
2464 | long | |
116c20d2 | 2465 | NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect) |
252b5132 | 2466 | { |
3a551c7a AM |
2467 | bfd_size_type count; |
2468 | ||
923f08ff AM |
2469 | if (bfd_get_format (abfd) != bfd_object) |
2470 | { | |
2471 | bfd_set_error (bfd_error_invalid_operation); | |
2472 | return -1; | |
2473 | } | |
f7c33884 | 2474 | |
923f08ff | 2475 | if (asect->flags & SEC_CONSTRUCTOR) |
3a551c7a AM |
2476 | count = asect->reloc_count; |
2477 | else if (asect == obj_datasec (abfd)) | |
2478 | count = exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
2479 | else if (asect == obj_textsec (abfd)) | |
2480 | count = exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
2481 | else if (asect == obj_bsssec (abfd)) | |
2482 | count = 0; | |
2483 | else | |
2484 | { | |
2485 | bfd_set_error (bfd_error_invalid_operation); | |
2486 | return -1; | |
2487 | } | |
252b5132 | 2488 | |
3a551c7a AM |
2489 | if (count >= LONG_MAX / sizeof (arelent *)) |
2490 | { | |
2491 | bfd_set_error (bfd_error_file_too_big); | |
2492 | return -1; | |
2493 | } | |
2494 | return (count + 1) * sizeof (arelent *); | |
252b5132 | 2495 | } |
252b5132 RH |
2496 | \f |
2497 | long | |
116c20d2 | 2498 | NAME (aout, get_symtab_upper_bound) (bfd *abfd) |
252b5132 | 2499 | { |
116c20d2 | 2500 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
252b5132 RH |
2501 | return -1; |
2502 | ||
2503 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
2504 | } | |
2505 | ||
1725a96e | 2506 | alent * |
116c20d2 NC |
2507 | NAME (aout, get_lineno) (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
2508 | asymbol *ignore_symbol ATTRIBUTE_UNUSED) | |
252b5132 | 2509 | { |
116c20d2 | 2510 | return NULL; |
252b5132 RH |
2511 | } |
2512 | ||
252b5132 | 2513 | void |
116c20d2 NC |
2514 | NAME (aout, get_symbol_info) (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
2515 | asymbol *symbol, | |
2516 | symbol_info *ret) | |
252b5132 RH |
2517 | { |
2518 | bfd_symbol_info (symbol, ret); | |
2519 | ||
2520 | if (ret->type == '?') | |
2521 | { | |
923f08ff | 2522 | int type_code = aout_symbol (symbol)->type & 0xff; |
252b5132 RH |
2523 | const char *stab_name = bfd_get_stab_name (type_code); |
2524 | static char buf[10]; | |
2525 | ||
2526 | if (stab_name == NULL) | |
2527 | { | |
e60b52c6 | 2528 | sprintf (buf, "(%d)", type_code); |
252b5132 RH |
2529 | stab_name = buf; |
2530 | } | |
2531 | ret->type = '-'; | |
2532 | ret->stab_type = type_code; | |
923f08ff AM |
2533 | ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff); |
2534 | ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff); | |
252b5132 RH |
2535 | ret->stab_name = stab_name; |
2536 | } | |
2537 | } | |
2538 | ||
252b5132 | 2539 | void |
116c20d2 NC |
2540 | NAME (aout, print_symbol) (bfd *abfd, |
2541 | void * afile, | |
2542 | asymbol *symbol, | |
2543 | bfd_print_symbol_type how) | |
252b5132 RH |
2544 | { |
2545 | FILE *file = (FILE *)afile; | |
2546 | ||
923f08ff | 2547 | switch (how) |
252b5132 | 2548 | { |
923f08ff AM |
2549 | case bfd_print_symbol_name: |
2550 | if (symbol->name) | |
2551 | fprintf (file,"%s", symbol->name); | |
2552 | break; | |
2553 | case bfd_print_symbol_more: | |
2554 | fprintf (file,"%4x %2x %2x", | |
2555 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2556 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2557 | (unsigned) (aout_symbol (symbol)->type)); | |
2558 | break; | |
2559 | case bfd_print_symbol_all: | |
2560 | { | |
2561 | const char *section_name = symbol->section->name; | |
252b5132 | 2562 | |
116c20d2 | 2563 | bfd_print_symbol_vandf (abfd, (void *)file, symbol); |
252b5132 | 2564 | |
923f08ff AM |
2565 | fprintf (file," %-5s %04x %02x %02x", |
2566 | section_name, | |
2567 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2568 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2569 | (unsigned) (aout_symbol (symbol)->type & 0xff)); | |
2570 | if (symbol->name) | |
2571 | fprintf (file," %s", symbol->name); | |
2572 | } | |
2573 | break; | |
252b5132 | 2574 | } |
252b5132 RH |
2575 | } |
2576 | ||
2577 | /* If we don't have to allocate more than 1MB to hold the generic | |
2578 | symbols, we use the generic minisymbol methord: it's faster, since | |
2579 | it only translates the symbols once, not multiple times. */ | |
2580 | #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) | |
2581 | ||
2582 | /* Read minisymbols. For minisymbols, we use the unmodified a.out | |
2583 | symbols. The minisymbol_to_symbol function translates these into | |
2584 | BFD asymbol structures. */ | |
2585 | ||
2586 | long | |
116c20d2 NC |
2587 | NAME (aout, read_minisymbols) (bfd *abfd, |
2588 | bfd_boolean dynamic, | |
2589 | void * *minisymsp, | |
2590 | unsigned int *sizep) | |
252b5132 RH |
2591 | { |
2592 | if (dynamic) | |
116c20d2 NC |
2593 | /* We could handle the dynamic symbols here as well, but it's |
2594 | easier to hand them off. */ | |
2595 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
252b5132 RH |
2596 | |
2597 | if (! aout_get_external_symbols (abfd)) | |
2598 | return -1; | |
2599 | ||
2600 | if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2601 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2602 | ||
116c20d2 | 2603 | *minisymsp = (void *) obj_aout_external_syms (abfd); |
252b5132 RH |
2604 | |
2605 | /* By passing the external symbols back from this routine, we are | |
2606 | giving up control over the memory block. Clear | |
2607 | obj_aout_external_syms, so that we do not try to free it | |
2608 | ourselves. */ | |
2609 | obj_aout_external_syms (abfd) = NULL; | |
2610 | ||
2611 | *sizep = EXTERNAL_NLIST_SIZE; | |
2612 | return obj_aout_external_sym_count (abfd); | |
2613 | } | |
2614 | ||
2615 | /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an | |
2616 | unmodified a.out symbol. The SYM argument is a structure returned | |
2617 | by bfd_make_empty_symbol, which we fill in here. */ | |
2618 | ||
2619 | asymbol * | |
116c20d2 NC |
2620 | NAME (aout, minisymbol_to_symbol) (bfd *abfd, |
2621 | bfd_boolean dynamic, | |
2622 | const void * minisym, | |
2623 | asymbol *sym) | |
252b5132 RH |
2624 | { |
2625 | if (dynamic | |
2626 | || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2627 | return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); | |
2628 | ||
2629 | memset (sym, 0, sizeof (aout_symbol_type)); | |
2630 | ||
2631 | /* We call translate_symbol_table to translate a single symbol. */ | |
116c20d2 | 2632 | if (! (NAME (aout, translate_symbol_table) |
252b5132 RH |
2633 | (abfd, |
2634 | (aout_symbol_type *) sym, | |
2635 | (struct external_nlist *) minisym, | |
2636 | (bfd_size_type) 1, | |
2637 | obj_aout_external_strings (abfd), | |
2638 | obj_aout_external_string_size (abfd), | |
b34976b6 | 2639 | FALSE))) |
252b5132 RH |
2640 | return NULL; |
2641 | ||
2642 | return sym; | |
2643 | } | |
2644 | ||
f7c33884 NC |
2645 | /* Provided a BFD, a section and an offset into the section, calculate |
2646 | and return the name of the source file and the line nearest to the | |
2647 | wanted location. */ | |
252b5132 | 2648 | |
b34976b6 | 2649 | bfd_boolean |
116c20d2 | 2650 | NAME (aout, find_nearest_line) (bfd *abfd, |
116c20d2 | 2651 | asymbol **symbols, |
fb167eb2 | 2652 | asection *section, |
116c20d2 NC |
2653 | bfd_vma offset, |
2654 | const char **filename_ptr, | |
2655 | const char **functionname_ptr, | |
fb167eb2 AM |
2656 | unsigned int *line_ptr, |
2657 | unsigned int *disriminator_ptr) | |
252b5132 | 2658 | { |
f7c33884 | 2659 | /* Run down the file looking for the filename, function and linenumber. */ |
252b5132 | 2660 | asymbol **p; |
dc810e39 AM |
2661 | const char *directory_name = NULL; |
2662 | const char *main_file_name = NULL; | |
2663 | const char *current_file_name = NULL; | |
116c20d2 | 2664 | const char *line_file_name = NULL; /* Value of current_file_name at line number. */ |
dc810e39 | 2665 | const char *line_directory_name = NULL; /* Value of directory_name at line number. */ |
252b5132 RH |
2666 | bfd_vma low_line_vma = 0; |
2667 | bfd_vma low_func_vma = 0; | |
2668 | asymbol *func = 0; | |
dc810e39 | 2669 | bfd_size_type filelen, funclen; |
252b5132 RH |
2670 | char *buf; |
2671 | ||
2672 | *filename_ptr = abfd->filename; | |
50455f1a | 2673 | *functionname_ptr = NULL; |
252b5132 | 2674 | *line_ptr = 0; |
fb167eb2 AM |
2675 | if (disriminator_ptr) |
2676 | *disriminator_ptr = 0; | |
f7c33884 | 2677 | |
116c20d2 | 2678 | if (symbols != NULL) |
923f08ff AM |
2679 | { |
2680 | for (p = symbols; *p; p++) | |
2681 | { | |
2682 | aout_symbol_type *q = (aout_symbol_type *) (*p); | |
2683 | next: | |
2684 | switch (q->type) | |
2685 | { | |
2686 | case N_TEXT: | |
2687 | /* If this looks like a file name symbol, and it comes after | |
2688 | the line number we have found so far, but before the | |
2689 | offset, then we have probably not found the right line | |
2690 | number. */ | |
2691 | if (q->symbol.value <= offset | |
2692 | && ((q->symbol.value > low_line_vma | |
2693 | && (line_file_name != NULL | |
2694 | || *line_ptr != 0)) | |
2695 | || (q->symbol.value > low_func_vma | |
2696 | && func != NULL))) | |
2697 | { | |
2698 | const char *symname; | |
252b5132 | 2699 | |
923f08ff | 2700 | symname = q->symbol.name; |
808346fc NC |
2701 | |
2702 | if (symname != NULL | |
2703 | && strlen (symname) > 2 | |
2704 | && strcmp (symname + strlen (symname) - 2, ".o") == 0) | |
923f08ff AM |
2705 | { |
2706 | if (q->symbol.value > low_line_vma) | |
2707 | { | |
2708 | *line_ptr = 0; | |
2709 | line_file_name = NULL; | |
2710 | } | |
2711 | if (q->symbol.value > low_func_vma) | |
2712 | func = NULL; | |
2713 | } | |
2714 | } | |
2715 | break; | |
252b5132 | 2716 | |
923f08ff AM |
2717 | case N_SO: |
2718 | /* If this symbol is less than the offset, but greater than | |
2719 | the line number we have found so far, then we have not | |
2720 | found the right line number. */ | |
2721 | if (q->symbol.value <= offset) | |
2722 | { | |
2723 | if (q->symbol.value > low_line_vma) | |
2724 | { | |
2725 | *line_ptr = 0; | |
2726 | line_file_name = NULL; | |
2727 | } | |
2728 | if (q->symbol.value > low_func_vma) | |
2729 | func = NULL; | |
2730 | } | |
252b5132 | 2731 | |
923f08ff AM |
2732 | main_file_name = current_file_name = q->symbol.name; |
2733 | /* Look ahead to next symbol to check if that too is an N_SO. */ | |
2734 | p++; | |
2735 | if (*p == NULL) | |
c3864421 | 2736 | goto done; |
923f08ff AM |
2737 | q = (aout_symbol_type *) (*p); |
2738 | if (q->type != (int)N_SO) | |
2739 | goto next; | |
2740 | ||
2741 | /* Found a second N_SO First is directory; second is filename. */ | |
2742 | directory_name = current_file_name; | |
2743 | main_file_name = current_file_name = q->symbol.name; | |
2744 | if (obj_textsec (abfd) != section) | |
2745 | goto done; | |
2746 | break; | |
2747 | case N_SOL: | |
2748 | current_file_name = q->symbol.name; | |
2749 | break; | |
252b5132 | 2750 | |
923f08ff | 2751 | case N_SLINE: |
252b5132 | 2752 | |
923f08ff AM |
2753 | case N_DSLINE: |
2754 | case N_BSLINE: | |
2755 | /* We'll keep this if it resolves nearer than the one we have | |
2756 | already. */ | |
2757 | if (q->symbol.value >= low_line_vma | |
2758 | && q->symbol.value <= offset) | |
2759 | { | |
2760 | *line_ptr = q->desc; | |
2761 | low_line_vma = q->symbol.value; | |
2762 | line_file_name = current_file_name; | |
2763 | line_directory_name = directory_name; | |
2764 | } | |
2765 | break; | |
2766 | case N_FUN: | |
2767 | { | |
f7c33884 | 2768 | /* We'll keep this if it is nearer than the one we have already. */ |
808346fc NC |
2769 | if (q->symbol.value >= low_func_vma |
2770 | && q->symbol.value <= offset) | |
f7c33884 NC |
2771 | { |
2772 | low_func_vma = q->symbol.value; | |
2773 | func = (asymbol *)q; | |
2774 | } | |
923f08ff AM |
2775 | else if (q->symbol.value > offset) |
2776 | goto done; | |
2777 | } | |
2778 | break; | |
2779 | } | |
252b5132 | 2780 | } |
252b5132 | 2781 | } |
252b5132 RH |
2782 | |
2783 | done: | |
2784 | if (*line_ptr != 0) | |
2785 | { | |
2786 | main_file_name = line_file_name; | |
2787 | directory_name = line_directory_name; | |
2788 | } | |
2789 | ||
2790 | if (main_file_name == NULL | |
5af11cab | 2791 | || IS_ABSOLUTE_PATH (main_file_name) |
252b5132 RH |
2792 | || directory_name == NULL) |
2793 | filelen = 0; | |
2794 | else | |
2795 | filelen = strlen (directory_name) + strlen (main_file_name); | |
f7c33884 | 2796 | |
252b5132 RH |
2797 | if (func == NULL) |
2798 | funclen = 0; | |
2799 | else | |
2800 | funclen = strlen (bfd_asymbol_name (func)); | |
2801 | ||
2802 | if (adata (abfd).line_buf != NULL) | |
2803 | free (adata (abfd).line_buf); | |
f7c33884 | 2804 | |
252b5132 RH |
2805 | if (filelen + funclen == 0) |
2806 | adata (abfd).line_buf = buf = NULL; | |
2807 | else | |
2808 | { | |
a50b1753 | 2809 | buf = (char *) bfd_malloc (filelen + funclen + 3); |
252b5132 RH |
2810 | adata (abfd).line_buf = buf; |
2811 | if (buf == NULL) | |
b34976b6 | 2812 | return FALSE; |
252b5132 RH |
2813 | } |
2814 | ||
2815 | if (main_file_name != NULL) | |
2816 | { | |
5af11cab | 2817 | if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL) |
252b5132 RH |
2818 | *filename_ptr = main_file_name; |
2819 | else | |
2820 | { | |
50455f1a NC |
2821 | if (buf == NULL) |
2822 | /* PR binutils/20891: In a corrupt input file both | |
2823 | main_file_name and directory_name can be empty... */ | |
2824 | * filename_ptr = NULL; | |
2825 | else | |
2826 | { | |
2827 | snprintf (buf, filelen + 1, "%s%s", directory_name, | |
2828 | main_file_name); | |
2829 | *filename_ptr = buf; | |
2830 | buf += filelen + 1; | |
2831 | } | |
252b5132 RH |
2832 | } |
2833 | } | |
2834 | ||
2835 | if (func) | |
2836 | { | |
2837 | const char *function = func->name; | |
dc810e39 | 2838 | char *colon; |
252b5132 | 2839 | |
e82ab856 NC |
2840 | if (buf == NULL) |
2841 | { | |
2842 | /* PR binutils/20892: In a corrupt input file func can be empty. */ | |
2843 | * functionname_ptr = NULL; | |
2844 | return TRUE; | |
2845 | } | |
252b5132 RH |
2846 | /* The caller expects a symbol name. We actually have a |
2847 | function name, without the leading underscore. Put the | |
2848 | underscore back in, so that the caller gets a symbol name. */ | |
2849 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
2850 | strcpy (buf, function); | |
2851 | else | |
2852 | { | |
2853 | buf[0] = bfd_get_symbol_leading_char (abfd); | |
2854 | strcpy (buf + 1, function); | |
2855 | } | |
f7c33884 | 2856 | /* Have to remove : stuff. */ |
dc810e39 AM |
2857 | colon = strchr (buf, ':'); |
2858 | if (colon != NULL) | |
2859 | *colon = '\0'; | |
252b5132 RH |
2860 | *functionname_ptr = buf; |
2861 | } | |
2862 | ||
b34976b6 | 2863 | return TRUE; |
252b5132 RH |
2864 | } |
2865 | ||
252b5132 | 2866 | int |
a6b96beb AM |
2867 | NAME (aout, sizeof_headers) (bfd *abfd, |
2868 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
252b5132 | 2869 | { |
923f08ff | 2870 | return adata (abfd).exec_bytes_size; |
252b5132 RH |
2871 | } |
2872 | ||
2873 | /* Free all information we have cached for this BFD. We can always | |
2874 | read it again later if we need it. */ | |
2875 | ||
b34976b6 | 2876 | bfd_boolean |
116c20d2 | 2877 | NAME (aout, bfd_free_cached_info) (bfd *abfd) |
252b5132 RH |
2878 | { |
2879 | asection *o; | |
2880 | ||
920581c5 L |
2881 | if (bfd_get_format (abfd) != bfd_object |
2882 | || abfd->tdata.aout_data == NULL) | |
b34976b6 | 2883 | return TRUE; |
252b5132 RH |
2884 | |
2885 | #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } | |
2886 | BFCI_FREE (obj_aout_symbols (abfd)); | |
2887 | #ifdef USE_MMAP | |
2888 | obj_aout_external_syms (abfd) = 0; | |
2889 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2890 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2891 | obj_aout_external_strings (abfd) = 0; | |
2892 | #else | |
2893 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2894 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
2895 | #endif | |
116c20d2 | 2896 | for (o = abfd->sections; o != NULL; o = o->next) |
252b5132 RH |
2897 | BFCI_FREE (o->relocation); |
2898 | #undef BFCI_FREE | |
2899 | ||
b34976b6 | 2900 | return TRUE; |
252b5132 RH |
2901 | } |
2902 | \f | |
2903 | /* a.out link code. */ | |
2904 | ||
252b5132 RH |
2905 | /* Routine to create an entry in an a.out link hash table. */ |
2906 | ||
2907 | struct bfd_hash_entry * | |
116c20d2 NC |
2908 | NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry, |
2909 | struct bfd_hash_table *table, | |
2910 | const char *string) | |
252b5132 RH |
2911 | { |
2912 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2913 | ||
2914 | /* Allocate the structure if it has not already been allocated by a | |
2915 | subclass. */ | |
116c20d2 | 2916 | if (ret == NULL) |
a50b1753 | 2917 | ret = (struct aout_link_hash_entry *) bfd_hash_allocate (table, |
07d6d2b8 | 2918 | sizeof (* ret)); |
116c20d2 NC |
2919 | if (ret == NULL) |
2920 | return NULL; | |
252b5132 RH |
2921 | |
2922 | /* Call the allocation method of the superclass. */ | |
2923 | ret = ((struct aout_link_hash_entry *) | |
2924 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2925 | table, string)); | |
2926 | if (ret) | |
2927 | { | |
2928 | /* Set local fields. */ | |
b34976b6 | 2929 | ret->written = FALSE; |
252b5132 RH |
2930 | ret->indx = -1; |
2931 | } | |
2932 | ||
2933 | return (struct bfd_hash_entry *) ret; | |
2934 | } | |
2935 | ||
2936 | /* Initialize an a.out link hash table. */ | |
2937 | ||
b34976b6 | 2938 | bfd_boolean |
116c20d2 NC |
2939 | NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table, |
2940 | bfd *abfd, | |
2941 | struct bfd_hash_entry *(*newfunc) | |
2942 | (struct bfd_hash_entry *, struct bfd_hash_table *, | |
66eb6687 AM |
2943 | const char *), |
2944 | unsigned int entsize) | |
252b5132 | 2945 | { |
66eb6687 | 2946 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
252b5132 RH |
2947 | } |
2948 | ||
2949 | /* Create an a.out link hash table. */ | |
2950 | ||
2951 | struct bfd_link_hash_table * | |
116c20d2 | 2952 | NAME (aout, link_hash_table_create) (bfd *abfd) |
252b5132 RH |
2953 | { |
2954 | struct aout_link_hash_table *ret; | |
986f0783 | 2955 | size_t amt = sizeof (* ret); |
252b5132 | 2956 | |
a50b1753 | 2957 | ret = (struct aout_link_hash_table *) bfd_malloc (amt); |
252b5132 | 2958 | if (ret == NULL) |
116c20d2 | 2959 | return NULL; |
5ed6aba4 | 2960 | |
66eb6687 AM |
2961 | if (!NAME (aout, link_hash_table_init) (ret, abfd, |
2962 | NAME (aout, link_hash_newfunc), | |
2963 | sizeof (struct aout_link_hash_entry))) | |
252b5132 RH |
2964 | { |
2965 | free (ret); | |
116c20d2 | 2966 | return NULL; |
252b5132 RH |
2967 | } |
2968 | return &ret->root; | |
2969 | } | |
2970 | ||
116c20d2 | 2971 | /* Add all symbols from an object file to the hash table. */ |
252b5132 | 2972 | |
b34976b6 | 2973 | static bfd_boolean |
116c20d2 | 2974 | aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 2975 | { |
116c20d2 NC |
2976 | bfd_boolean (*add_one_symbol) |
2977 | (struct bfd_link_info *, bfd *, const char *, flagword, asection *, | |
2978 | bfd_vma, const char *, bfd_boolean, bfd_boolean, | |
2979 | struct bfd_link_hash_entry **); | |
2980 | struct external_nlist *syms; | |
2981 | bfd_size_type sym_count; | |
2982 | char *strings; | |
2983 | bfd_boolean copy; | |
2984 | struct aout_link_hash_entry **sym_hash; | |
2985 | struct external_nlist *p; | |
2986 | struct external_nlist *pend; | |
2987 | bfd_size_type amt; | |
252b5132 | 2988 | |
116c20d2 NC |
2989 | syms = obj_aout_external_syms (abfd); |
2990 | sym_count = obj_aout_external_sym_count (abfd); | |
2991 | strings = obj_aout_external_strings (abfd); | |
2992 | if (info->keep_memory) | |
2993 | copy = FALSE; | |
2994 | else | |
2995 | copy = TRUE; | |
252b5132 | 2996 | |
116c20d2 | 2997 | if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) |
252b5132 | 2998 | { |
116c20d2 NC |
2999 | if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) |
3000 | (abfd, info, &syms, &sym_count, &strings))) | |
b34976b6 | 3001 | return FALSE; |
252b5132 RH |
3002 | } |
3003 | ||
20c6e70e MS |
3004 | if (sym_count == 0) |
3005 | return TRUE; /* Nothing to do. */ | |
3006 | ||
116c20d2 NC |
3007 | /* We keep a list of the linker hash table entries that correspond |
3008 | to particular symbols. We could just look them up in the hash | |
3009 | table, but keeping the list is more efficient. Perhaps this | |
3010 | should be conditional on info->keep_memory. */ | |
3011 | amt = sym_count * sizeof (struct aout_link_hash_entry *); | |
a50b1753 | 3012 | sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt); |
20c6e70e | 3013 | if (sym_hash == NULL) |
116c20d2 NC |
3014 | return FALSE; |
3015 | obj_aout_sym_hashes (abfd) = sym_hash; | |
252b5132 | 3016 | |
116c20d2 NC |
3017 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; |
3018 | if (add_one_symbol == NULL) | |
3019 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
252b5132 | 3020 | |
116c20d2 NC |
3021 | p = syms; |
3022 | pend = p + sym_count; | |
3023 | for (; p < pend; p++, sym_hash++) | |
252b5132 | 3024 | { |
116c20d2 | 3025 | int type; |
252b5132 | 3026 | const char *name; |
116c20d2 NC |
3027 | bfd_vma value; |
3028 | asection *section; | |
3029 | flagword flags; | |
3030 | const char *string; | |
252b5132 | 3031 | |
116c20d2 | 3032 | *sym_hash = NULL; |
252b5132 | 3033 | |
116c20d2 | 3034 | type = H_GET_8 (abfd, p->e_type); |
252b5132 | 3035 | |
116c20d2 NC |
3036 | /* Ignore debugging symbols. */ |
3037 | if ((type & N_STAB) != 0) | |
3038 | continue; | |
252b5132 | 3039 | |
e517df3d | 3040 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
531336e3 | 3041 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3042 | return FALSE; |
116c20d2 NC |
3043 | name = strings + GET_WORD (abfd, p->e_strx); |
3044 | value = GET_WORD (abfd, p->e_value); | |
3045 | flags = BSF_GLOBAL; | |
3046 | string = NULL; | |
3047 | switch (type) | |
252b5132 | 3048 | { |
116c20d2 NC |
3049 | default: |
3050 | abort (); | |
f7c33884 | 3051 | |
116c20d2 NC |
3052 | case N_UNDF: |
3053 | case N_ABS: | |
3054 | case N_TEXT: | |
3055 | case N_DATA: | |
3056 | case N_BSS: | |
3057 | case N_FN_SEQ: | |
3058 | case N_COMM: | |
3059 | case N_SETV: | |
3060 | case N_FN: | |
3061 | /* Ignore symbols that are not externally visible. */ | |
3062 | continue; | |
3063 | case N_INDR: | |
3064 | /* Ignore local indirect symbol. */ | |
3065 | ++p; | |
3066 | ++sym_hash; | |
3067 | continue; | |
252b5132 | 3068 | |
116c20d2 NC |
3069 | case N_UNDF | N_EXT: |
3070 | if (value == 0) | |
f7c33884 | 3071 | { |
116c20d2 NC |
3072 | section = bfd_und_section_ptr; |
3073 | flags = 0; | |
252b5132 RH |
3074 | } |
3075 | else | |
3076 | section = bfd_com_section_ptr; | |
3077 | break; | |
3078 | case N_ABS | N_EXT: | |
3079 | section = bfd_abs_section_ptr; | |
3080 | break; | |
3081 | case N_TEXT | N_EXT: | |
3082 | section = obj_textsec (abfd); | |
fd361982 | 3083 | value -= bfd_section_vma (section); |
252b5132 RH |
3084 | break; |
3085 | case N_DATA | N_EXT: | |
3086 | case N_SETV | N_EXT: | |
3087 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
3088 | translate_from_native_sym_flags. */ | |
3089 | section = obj_datasec (abfd); | |
fd361982 | 3090 | value -= bfd_section_vma (section); |
252b5132 RH |
3091 | break; |
3092 | case N_BSS | N_EXT: | |
3093 | section = obj_bsssec (abfd); | |
fd361982 | 3094 | value -= bfd_section_vma (section); |
252b5132 RH |
3095 | break; |
3096 | case N_INDR | N_EXT: | |
3097 | /* An indirect symbol. The next symbol is the symbol | |
3098 | which this one really is. */ | |
39d4daf6 NC |
3099 | /* See PR 20925 for a reproducer. */ |
3100 | if (p + 1 >= pend) | |
3101 | return FALSE; | |
252b5132 | 3102 | ++p; |
e517df3d | 3103 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
daae68f4 | 3104 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3105 | return FALSE; |
252b5132 RH |
3106 | string = strings + GET_WORD (abfd, p->e_strx); |
3107 | section = bfd_ind_section_ptr; | |
3108 | flags |= BSF_INDIRECT; | |
3109 | break; | |
3110 | case N_COMM | N_EXT: | |
3111 | section = bfd_com_section_ptr; | |
3112 | break; | |
3113 | case N_SETA: case N_SETA | N_EXT: | |
3114 | section = bfd_abs_section_ptr; | |
3115 | flags |= BSF_CONSTRUCTOR; | |
3116 | break; | |
3117 | case N_SETT: case N_SETT | N_EXT: | |
3118 | section = obj_textsec (abfd); | |
3119 | flags |= BSF_CONSTRUCTOR; | |
fd361982 | 3120 | value -= bfd_section_vma (section); |
252b5132 RH |
3121 | break; |
3122 | case N_SETD: case N_SETD | N_EXT: | |
3123 | section = obj_datasec (abfd); | |
3124 | flags |= BSF_CONSTRUCTOR; | |
fd361982 | 3125 | value -= bfd_section_vma (section); |
252b5132 RH |
3126 | break; |
3127 | case N_SETB: case N_SETB | N_EXT: | |
3128 | section = obj_bsssec (abfd); | |
3129 | flags |= BSF_CONSTRUCTOR; | |
fd361982 | 3130 | value -= bfd_section_vma (section); |
252b5132 RH |
3131 | break; |
3132 | case N_WARNING: | |
3133 | /* A warning symbol. The next symbol is the one to warn | |
9f400ee9 HPN |
3134 | about. If there is no next symbol, just look away. */ |
3135 | if (p + 1 >= pend) | |
3136 | return TRUE; | |
252b5132 RH |
3137 | ++p; |
3138 | string = name; | |
e517df3d | 3139 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
daae68f4 | 3140 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3141 | return FALSE; |
252b5132 RH |
3142 | name = strings + GET_WORD (abfd, p->e_strx); |
3143 | section = bfd_und_section_ptr; | |
3144 | flags |= BSF_WARNING; | |
3145 | break; | |
3146 | case N_WEAKU: | |
3147 | section = bfd_und_section_ptr; | |
3148 | flags = BSF_WEAK; | |
3149 | break; | |
3150 | case N_WEAKA: | |
3151 | section = bfd_abs_section_ptr; | |
3152 | flags = BSF_WEAK; | |
3153 | break; | |
3154 | case N_WEAKT: | |
3155 | section = obj_textsec (abfd); | |
fd361982 | 3156 | value -= bfd_section_vma (section); |
252b5132 RH |
3157 | flags = BSF_WEAK; |
3158 | break; | |
3159 | case N_WEAKD: | |
3160 | section = obj_datasec (abfd); | |
fd361982 | 3161 | value -= bfd_section_vma (section); |
252b5132 RH |
3162 | flags = BSF_WEAK; |
3163 | break; | |
3164 | case N_WEAKB: | |
3165 | section = obj_bsssec (abfd); | |
fd361982 | 3166 | value -= bfd_section_vma (section); |
252b5132 RH |
3167 | flags = BSF_WEAK; |
3168 | break; | |
3169 | } | |
3170 | ||
3171 | if (! ((*add_one_symbol) | |
b34976b6 | 3172 | (info, abfd, name, flags, section, value, string, copy, FALSE, |
252b5132 | 3173 | (struct bfd_link_hash_entry **) sym_hash))) |
b34976b6 | 3174 | return FALSE; |
252b5132 RH |
3175 | |
3176 | /* Restrict the maximum alignment of a common symbol based on | |
3177 | the architecture, since a.out has no way to represent | |
3178 | alignment requirements of a section in a .o file. FIXME: | |
3179 | This isn't quite right: it should use the architecture of the | |
3180 | output file, not the input files. */ | |
3181 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
3182 | && ((*sym_hash)->root.u.c.p->alignment_power > | |
3183 | bfd_get_arch_info (abfd)->section_align_power)) | |
3184 | (*sym_hash)->root.u.c.p->alignment_power = | |
3185 | bfd_get_arch_info (abfd)->section_align_power; | |
3186 | ||
3187 | /* If this is a set symbol, and we are not building sets, then | |
3188 | it is possible for the hash entry to not have been set. In | |
3189 | such a case, treat the symbol as not globally defined. */ | |
3190 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
3191 | { | |
3192 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
3193 | *sym_hash = NULL; | |
3194 | } | |
3195 | ||
3196 | if (type == (N_INDR | N_EXT) || type == N_WARNING) | |
3197 | ++sym_hash; | |
3198 | } | |
3199 | ||
b34976b6 | 3200 | return TRUE; |
252b5132 | 3201 | } |
252b5132 | 3202 | |
116c20d2 NC |
3203 | /* Free up the internal symbols read from an a.out file. */ |
3204 | ||
3205 | static bfd_boolean | |
3206 | aout_link_free_symbols (bfd *abfd) | |
252b5132 | 3207 | { |
116c20d2 NC |
3208 | if (obj_aout_external_syms (abfd) != NULL) |
3209 | { | |
3210 | #ifdef USE_MMAP | |
3211 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
3212 | #else | |
3213 | free ((void *) obj_aout_external_syms (abfd)); | |
3214 | #endif | |
3215 | obj_aout_external_syms (abfd) = NULL; | |
3216 | } | |
3217 | if (obj_aout_external_strings (abfd) != NULL) | |
3218 | { | |
3219 | #ifdef USE_MMAP | |
3220 | bfd_free_window (&obj_aout_string_window (abfd)); | |
3221 | #else | |
3222 | free ((void *) obj_aout_external_strings (abfd)); | |
3223 | #endif | |
3224 | obj_aout_external_strings (abfd) = NULL; | |
3225 | } | |
3226 | return TRUE; | |
3227 | } | |
252b5132 | 3228 | |
116c20d2 | 3229 | /* Add symbols from an a.out object file. */ |
252b5132 | 3230 | |
116c20d2 NC |
3231 | static bfd_boolean |
3232 | aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) | |
252b5132 | 3233 | { |
116c20d2 NC |
3234 | if (! aout_get_external_symbols (abfd)) |
3235 | return FALSE; | |
3236 | if (! aout_link_add_symbols (abfd, info)) | |
3237 | return FALSE; | |
3238 | if (! info->keep_memory) | |
3239 | { | |
3240 | if (! aout_link_free_symbols (abfd)) | |
3241 | return FALSE; | |
3242 | } | |
3243 | return TRUE; | |
3244 | } | |
252b5132 | 3245 | |
116c20d2 NC |
3246 | /* Look through the internal symbols to see if this object file should |
3247 | be included in the link. We should include this object file if it | |
3248 | defines any symbols which are currently undefined. If this object | |
3249 | file defines a common symbol, then we may adjust the size of the | |
3250 | known symbol but we do not include the object file in the link | |
3251 | (unless there is some other reason to include it). */ | |
252b5132 | 3252 | |
116c20d2 NC |
3253 | static bfd_boolean |
3254 | aout_link_check_ar_symbols (bfd *abfd, | |
3255 | struct bfd_link_info *info, | |
5d3236ee DK |
3256 | bfd_boolean *pneeded, |
3257 | bfd **subsbfd) | |
252b5132 | 3258 | { |
116c20d2 NC |
3259 | struct external_nlist *p; |
3260 | struct external_nlist *pend; | |
3261 | char *strings; | |
252b5132 | 3262 | |
116c20d2 | 3263 | *pneeded = FALSE; |
252b5132 | 3264 | |
116c20d2 NC |
3265 | /* Look through all the symbols. */ |
3266 | p = obj_aout_external_syms (abfd); | |
3267 | pend = p + obj_aout_external_sym_count (abfd); | |
3268 | strings = obj_aout_external_strings (abfd); | |
3269 | for (; p < pend; p++) | |
3270 | { | |
3271 | int type = H_GET_8 (abfd, p->e_type); | |
3272 | const char *name; | |
3273 | struct bfd_link_hash_entry *h; | |
252b5132 | 3274 | |
116c20d2 NC |
3275 | /* Ignore symbols that are not externally visible. This is an |
3276 | optimization only, as we check the type more thoroughly | |
3277 | below. */ | |
3278 | if (((type & N_EXT) == 0 | |
3279 | || (type & N_STAB) != 0 | |
3280 | || type == N_FN) | |
3281 | && type != N_WEAKA | |
3282 | && type != N_WEAKT | |
3283 | && type != N_WEAKD | |
3284 | && type != N_WEAKB) | |
3285 | { | |
3286 | if (type == N_WARNING | |
3287 | || type == N_INDR) | |
3288 | ++p; | |
3289 | continue; | |
3290 | } | |
3291 | ||
3292 | name = strings + GET_WORD (abfd, p->e_strx); | |
3293 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); | |
3294 | ||
3295 | /* We are only interested in symbols that are currently | |
3296 | undefined or common. */ | |
3297 | if (h == NULL | |
3298 | || (h->type != bfd_link_hash_undefined | |
3299 | && h->type != bfd_link_hash_common)) | |
3300 | { | |
3301 | if (type == (N_INDR | N_EXT)) | |
3302 | ++p; | |
3303 | continue; | |
3304 | } | |
3305 | ||
3306 | if (type == (N_TEXT | N_EXT) | |
3307 | || type == (N_DATA | N_EXT) | |
3308 | || type == (N_BSS | N_EXT) | |
3309 | || type == (N_ABS | N_EXT) | |
3310 | || type == (N_INDR | N_EXT)) | |
3311 | { | |
3312 | /* This object file defines this symbol. We must link it | |
3313 | in. This is true regardless of whether the current | |
3314 | definition of the symbol is undefined or common. | |
3315 | ||
07d6d2b8 | 3316 | If the current definition is common, we have a case in |
116c20d2 | 3317 | which we have already seen an object file including: |
07d6d2b8 | 3318 | int a; |
116c20d2 | 3319 | and this object file from the archive includes: |
07d6d2b8 | 3320 | int a = 5; |
116c20d2 | 3321 | In such a case, whether to include this object is target |
07d6d2b8 | 3322 | dependant for backward compatibility. |
116c20d2 NC |
3323 | |
3324 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
3325 | element if the symbol is defined in the .data section, | |
3326 | but not if it is defined in the .text section. That | |
3327 | seems a bit crazy to me, and it has not been implemented | |
3328 | yet. However, it might be correct. */ | |
3329 | if (h->type == bfd_link_hash_common) | |
3330 | { | |
3331 | int skip = 0; | |
3332 | ||
f88dc410 | 3333 | switch (info->common_skip_ar_symbols) |
116c20d2 | 3334 | { |
a78eea16 AM |
3335 | case bfd_link_common_skip_none: |
3336 | break; | |
116c20d2 NC |
3337 | case bfd_link_common_skip_text: |
3338 | skip = (type == (N_TEXT | N_EXT)); | |
3339 | break; | |
3340 | case bfd_link_common_skip_data: | |
3341 | skip = (type == (N_DATA | N_EXT)); | |
3342 | break; | |
116c20d2 NC |
3343 | case bfd_link_common_skip_all: |
3344 | skip = 1; | |
3345 | break; | |
3346 | } | |
3347 | ||
3348 | if (skip) | |
3349 | continue; | |
3350 | } | |
3351 | ||
0e144ba7 AM |
3352 | if (!(*info->callbacks |
3353 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3354 | return FALSE; |
3355 | *pneeded = TRUE; | |
3356 | return TRUE; | |
3357 | } | |
3358 | ||
3359 | if (type == (N_UNDF | N_EXT)) | |
3360 | { | |
3361 | bfd_vma value; | |
3362 | ||
3363 | value = GET_WORD (abfd, p->e_value); | |
3364 | if (value != 0) | |
3365 | { | |
3366 | /* This symbol is common in the object from the archive | |
3367 | file. */ | |
3368 | if (h->type == bfd_link_hash_undefined) | |
3369 | { | |
3370 | bfd *symbfd; | |
3371 | unsigned int power; | |
3372 | ||
3373 | symbfd = h->u.undef.abfd; | |
3374 | if (symbfd == NULL) | |
3375 | { | |
3376 | /* This symbol was created as undefined from | |
3377 | outside BFD. We assume that we should link | |
3378 | in the object file. This is done for the -u | |
3379 | option in the linker. */ | |
0e144ba7 AM |
3380 | if (!(*info->callbacks |
3381 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3382 | return FALSE; |
3383 | *pneeded = TRUE; | |
3384 | return TRUE; | |
3385 | } | |
3386 | /* Turn the current link symbol into a common | |
3387 | symbol. It is already on the undefs list. */ | |
3388 | h->type = bfd_link_hash_common; | |
a50b1753 | 3389 | h->u.c.p = (struct bfd_link_hash_common_entry *) |
0e144ba7 AM |
3390 | bfd_hash_allocate (&info->hash->table, |
3391 | sizeof (struct bfd_link_hash_common_entry)); | |
116c20d2 NC |
3392 | if (h->u.c.p == NULL) |
3393 | return FALSE; | |
3394 | ||
3395 | h->u.c.size = value; | |
3396 | ||
3397 | /* FIXME: This isn't quite right. The maximum | |
3398 | alignment of a common symbol should be set by the | |
3399 | architecture of the output file, not of the input | |
3400 | file. */ | |
3401 | power = bfd_log2 (value); | |
3402 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
3403 | power = bfd_get_arch_info (abfd)->section_align_power; | |
3404 | h->u.c.p->alignment_power = power; | |
3405 | ||
3406 | h->u.c.p->section = bfd_make_section_old_way (symbfd, | |
3407 | "COMMON"); | |
3408 | } | |
3409 | else | |
3410 | { | |
3411 | /* Adjust the size of the common symbol if | |
3412 | necessary. */ | |
3413 | if (value > h->u.c.size) | |
3414 | h->u.c.size = value; | |
3415 | } | |
3416 | } | |
3417 | } | |
3418 | ||
3419 | if (type == N_WEAKA | |
3420 | || type == N_WEAKT | |
3421 | || type == N_WEAKD | |
3422 | || type == N_WEAKB) | |
3423 | { | |
3424 | /* This symbol is weak but defined. We must pull it in if | |
3425 | the current link symbol is undefined, but we don't want | |
3426 | it if the current link symbol is common. */ | |
3427 | if (h->type == bfd_link_hash_undefined) | |
3428 | { | |
0e144ba7 AM |
3429 | if (!(*info->callbacks |
3430 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3431 | return FALSE; |
3432 | *pneeded = TRUE; | |
3433 | return TRUE; | |
3434 | } | |
3435 | } | |
3436 | } | |
3437 | ||
3438 | /* We do not need this object file. */ | |
3439 | return TRUE; | |
3440 | } | |
3441 | /* Check a single archive element to see if we need to include it in | |
3442 | the link. *PNEEDED is set according to whether this element is | |
3443 | needed in the link or not. This is called from | |
3444 | _bfd_generic_link_add_archive_symbols. */ | |
3445 | ||
3446 | static bfd_boolean | |
3447 | aout_link_check_archive_element (bfd *abfd, | |
3448 | struct bfd_link_info *info, | |
13e570f8 AM |
3449 | struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED, |
3450 | const char *name ATTRIBUTE_UNUSED, | |
116c20d2 NC |
3451 | bfd_boolean *pneeded) |
3452 | { | |
0e144ba7 AM |
3453 | bfd *oldbfd; |
3454 | bfd_boolean needed; | |
5d3236ee | 3455 | |
0e144ba7 | 3456 | if (!aout_get_external_symbols (abfd)) |
116c20d2 NC |
3457 | return FALSE; |
3458 | ||
0e144ba7 AM |
3459 | oldbfd = abfd; |
3460 | if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd)) | |
116c20d2 NC |
3461 | return FALSE; |
3462 | ||
0e144ba7 AM |
3463 | needed = *pneeded; |
3464 | if (needed) | |
116c20d2 | 3465 | { |
5d3236ee DK |
3466 | /* Potentially, the add_archive_element hook may have set a |
3467 | substitute BFD for us. */ | |
0e144ba7 AM |
3468 | if (abfd != oldbfd) |
3469 | { | |
3470 | if (!info->keep_memory | |
3471 | && !aout_link_free_symbols (oldbfd)) | |
3472 | return FALSE; | |
3473 | if (!aout_get_external_symbols (abfd)) | |
3474 | return FALSE; | |
3475 | } | |
3476 | if (!aout_link_add_symbols (abfd, info)) | |
116c20d2 NC |
3477 | return FALSE; |
3478 | } | |
3479 | ||
0e144ba7 | 3480 | if (!info->keep_memory || !needed) |
116c20d2 | 3481 | { |
0e144ba7 | 3482 | if (!aout_link_free_symbols (abfd)) |
116c20d2 NC |
3483 | return FALSE; |
3484 | } | |
3485 | ||
3486 | return TRUE; | |
3487 | } | |
3488 | ||
3489 | /* Given an a.out BFD, add symbols to the global hash table as | |
3490 | appropriate. */ | |
3491 | ||
3492 | bfd_boolean | |
3493 | NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info) | |
3494 | { | |
3495 | switch (bfd_get_format (abfd)) | |
3496 | { | |
3497 | case bfd_object: | |
3498 | return aout_link_add_object_symbols (abfd, info); | |
3499 | case bfd_archive: | |
3500 | return _bfd_generic_link_add_archive_symbols | |
3501 | (abfd, info, aout_link_check_archive_element); | |
3502 | default: | |
3503 | bfd_set_error (bfd_error_wrong_format); | |
3504 | return FALSE; | |
3505 | } | |
3506 | } | |
3507 | \f | |
3508 | /* A hash table used for header files with N_BINCL entries. */ | |
3509 | ||
3510 | struct aout_link_includes_table | |
3511 | { | |
3512 | struct bfd_hash_table root; | |
3513 | }; | |
3514 | ||
3515 | /* A linked list of totals that we have found for a particular header | |
3516 | file. */ | |
3517 | ||
3518 | struct aout_link_includes_totals | |
3519 | { | |
3520 | struct aout_link_includes_totals *next; | |
3521 | bfd_vma total; | |
3522 | }; | |
3523 | ||
3524 | /* An entry in the header file hash table. */ | |
3525 | ||
3526 | struct aout_link_includes_entry | |
3527 | { | |
3528 | struct bfd_hash_entry root; | |
3529 | /* List of totals we have found for this file. */ | |
3530 | struct aout_link_includes_totals *totals; | |
3531 | }; | |
3532 | ||
3533 | /* Look up an entry in an the header file hash table. */ | |
3534 | ||
3535 | #define aout_link_includes_lookup(table, string, create, copy) \ | |
3536 | ((struct aout_link_includes_entry *) \ | |
3537 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
3538 | ||
3539 | /* During the final link step we need to pass around a bunch of | |
3540 | information, so we do it in an instance of this structure. */ | |
3541 | ||
3542 | struct aout_final_link_info | |
3543 | { | |
3544 | /* General link information. */ | |
3545 | struct bfd_link_info *info; | |
3546 | /* Output bfd. */ | |
252b5132 RH |
3547 | bfd *output_bfd; |
3548 | /* Reloc file positions. */ | |
3549 | file_ptr treloff, dreloff; | |
3550 | /* File position of symbols. */ | |
3551 | file_ptr symoff; | |
3552 | /* String table. */ | |
3553 | struct bfd_strtab_hash *strtab; | |
3554 | /* Header file hash table. */ | |
3555 | struct aout_link_includes_table includes; | |
3556 | /* A buffer large enough to hold the contents of any section. */ | |
3557 | bfd_byte *contents; | |
3558 | /* A buffer large enough to hold the relocs of any section. */ | |
116c20d2 | 3559 | void * relocs; |
252b5132 RH |
3560 | /* A buffer large enough to hold the symbol map of any input BFD. */ |
3561 | int *symbol_map; | |
3562 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
3563 | struct external_nlist *output_syms; | |
3564 | }; | |
3565 | ||
252b5132 RH |
3566 | /* The function to create a new entry in the header file hash table. */ |
3567 | ||
3568 | static struct bfd_hash_entry * | |
116c20d2 NC |
3569 | aout_link_includes_newfunc (struct bfd_hash_entry *entry, |
3570 | struct bfd_hash_table *table, | |
3571 | const char *string) | |
252b5132 RH |
3572 | { |
3573 | struct aout_link_includes_entry *ret = | |
3574 | (struct aout_link_includes_entry *) entry; | |
3575 | ||
3576 | /* Allocate the structure if it has not already been allocated by a | |
3577 | subclass. */ | |
116c20d2 | 3578 | if (ret == NULL) |
a50b1753 | 3579 | ret = (struct aout_link_includes_entry *) |
07d6d2b8 | 3580 | bfd_hash_allocate (table, sizeof (* ret)); |
116c20d2 NC |
3581 | if (ret == NULL) |
3582 | return NULL; | |
252b5132 RH |
3583 | |
3584 | /* Call the allocation method of the superclass. */ | |
3585 | ret = ((struct aout_link_includes_entry *) | |
3586 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
3587 | if (ret) | |
3588 | { | |
3589 | /* Set local fields. */ | |
3590 | ret->totals = NULL; | |
3591 | } | |
3592 | ||
3593 | return (struct bfd_hash_entry *) ret; | |
3594 | } | |
3595 | ||
116c20d2 NC |
3596 | /* Write out a symbol that was not associated with an a.out input |
3597 | object. */ | |
252b5132 | 3598 | |
116c20d2 | 3599 | static bfd_boolean |
7686d77d | 3600 | aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data) |
252b5132 | 3601 | { |
7686d77d | 3602 | struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh; |
57402f1e | 3603 | struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data; |
116c20d2 NC |
3604 | bfd *output_bfd; |
3605 | int type; | |
3606 | bfd_vma val; | |
3607 | struct external_nlist outsym; | |
3608 | bfd_size_type indx; | |
986f0783 | 3609 | size_t amt; |
252b5132 | 3610 | |
116c20d2 NC |
3611 | if (h->root.type == bfd_link_hash_warning) |
3612 | { | |
3613 | h = (struct aout_link_hash_entry *) h->root.u.i.link; | |
3614 | if (h->root.type == bfd_link_hash_new) | |
3615 | return TRUE; | |
3616 | } | |
252b5132 | 3617 | |
57402f1e | 3618 | output_bfd = flaginfo->output_bfd; |
252b5132 | 3619 | |
116c20d2 | 3620 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) |
252b5132 | 3621 | { |
116c20d2 | 3622 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) |
57402f1e | 3623 | (output_bfd, flaginfo->info, h))) |
252b5132 | 3624 | { |
116c20d2 NC |
3625 | /* FIXME: No way to handle errors. */ |
3626 | abort (); | |
252b5132 | 3627 | } |
116c20d2 | 3628 | } |
252b5132 | 3629 | |
116c20d2 NC |
3630 | if (h->written) |
3631 | return TRUE; | |
252b5132 | 3632 | |
116c20d2 | 3633 | h->written = TRUE; |
252b5132 | 3634 | |
116c20d2 NC |
3635 | /* An indx of -2 means the symbol must be written. */ |
3636 | if (h->indx != -2 | |
57402f1e NC |
3637 | && (flaginfo->info->strip == strip_all |
3638 | || (flaginfo->info->strip == strip_some | |
3639 | && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string, | |
116c20d2 NC |
3640 | FALSE, FALSE) == NULL))) |
3641 | return TRUE; | |
252b5132 | 3642 | |
116c20d2 | 3643 | switch (h->root.type) |
252b5132 | 3644 | { |
116c20d2 NC |
3645 | default: |
3646 | case bfd_link_hash_warning: | |
3647 | abort (); | |
3648 | /* Avoid variable not initialized warnings. */ | |
3649 | return TRUE; | |
3650 | case bfd_link_hash_new: | |
3651 | /* This can happen for set symbols when sets are not being | |
07d6d2b8 | 3652 | built. */ |
116c20d2 NC |
3653 | return TRUE; |
3654 | case bfd_link_hash_undefined: | |
3655 | type = N_UNDF | N_EXT; | |
3656 | val = 0; | |
3657 | break; | |
3658 | case bfd_link_hash_defined: | |
3659 | case bfd_link_hash_defweak: | |
3660 | { | |
3661 | asection *sec; | |
252b5132 | 3662 | |
116c20d2 NC |
3663 | sec = h->root.u.def.section->output_section; |
3664 | BFD_ASSERT (bfd_is_abs_section (sec) | |
3665 | || sec->owner == output_bfd); | |
3666 | if (sec == obj_textsec (output_bfd)) | |
3667 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; | |
3668 | else if (sec == obj_datasec (output_bfd)) | |
3669 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; | |
3670 | else if (sec == obj_bsssec (output_bfd)) | |
3671 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; | |
3672 | else | |
3673 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; | |
3674 | type |= N_EXT; | |
3675 | val = (h->root.u.def.value | |
3676 | + sec->vma | |
3677 | + h->root.u.def.section->output_offset); | |
3678 | } | |
3679 | break; | |
3680 | case bfd_link_hash_common: | |
3681 | type = N_UNDF | N_EXT; | |
3682 | val = h->root.u.c.size; | |
3683 | break; | |
3684 | case bfd_link_hash_undefweak: | |
3685 | type = N_WEAKU; | |
3686 | val = 0; | |
c38eb2a6 | 3687 | break; |
116c20d2 NC |
3688 | case bfd_link_hash_indirect: |
3689 | /* We ignore these symbols, since the indirected symbol is | |
3690 | already in the hash table. */ | |
3691 | return TRUE; | |
3692 | } | |
252b5132 | 3693 | |
116c20d2 NC |
3694 | H_PUT_8 (output_bfd, type, outsym.e_type); |
3695 | H_PUT_8 (output_bfd, 0, outsym.e_other); | |
3696 | H_PUT_16 (output_bfd, 0, outsym.e_desc); | |
57402f1e | 3697 | indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string, |
116c20d2 NC |
3698 | FALSE); |
3699 | if (indx == - (bfd_size_type) 1) | |
3700 | /* FIXME: No way to handle errors. */ | |
3701 | abort (); | |
252b5132 | 3702 | |
116c20d2 NC |
3703 | PUT_WORD (output_bfd, indx, outsym.e_strx); |
3704 | PUT_WORD (output_bfd, val, outsym.e_value); | |
252b5132 | 3705 | |
116c20d2 | 3706 | amt = EXTERNAL_NLIST_SIZE; |
57402f1e | 3707 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0 |
116c20d2 NC |
3708 | || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt) |
3709 | /* FIXME: No way to handle errors. */ | |
3710 | abort (); | |
252b5132 | 3711 | |
57402f1e | 3712 | flaginfo->symoff += EXTERNAL_NLIST_SIZE; |
116c20d2 NC |
3713 | h->indx = obj_aout_external_sym_count (output_bfd); |
3714 | ++obj_aout_external_sym_count (output_bfd); | |
252b5132 | 3715 | |
116c20d2 NC |
3716 | return TRUE; |
3717 | } | |
252b5132 | 3718 | |
116c20d2 | 3719 | /* Handle a link order which is supposed to generate a reloc. */ |
252b5132 | 3720 | |
116c20d2 | 3721 | static bfd_boolean |
57402f1e | 3722 | aout_link_reloc_link_order (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3723 | asection *o, |
3724 | struct bfd_link_order *p) | |
3725 | { | |
3726 | struct bfd_link_order_reloc *pr; | |
3727 | int r_index; | |
3728 | int r_extern; | |
3729 | reloc_howto_type *howto; | |
3730 | file_ptr *reloff_ptr = NULL; | |
3731 | struct reloc_std_external srel; | |
3732 | struct reloc_ext_external erel; | |
3733 | void * rel_ptr; | |
986f0783 | 3734 | size_t amt; |
252b5132 | 3735 | |
116c20d2 | 3736 | pr = p->u.reloc.p; |
252b5132 | 3737 | |
116c20d2 NC |
3738 | if (p->type == bfd_section_reloc_link_order) |
3739 | { | |
3740 | r_extern = 0; | |
3741 | if (bfd_is_abs_section (pr->u.section)) | |
3742 | r_index = N_ABS | N_EXT; | |
3743 | else | |
3744 | { | |
57402f1e | 3745 | BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd); |
116c20d2 NC |
3746 | r_index = pr->u.section->target_index; |
3747 | } | |
3748 | } | |
3749 | else | |
3750 | { | |
3751 | struct aout_link_hash_entry *h; | |
252b5132 | 3752 | |
116c20d2 NC |
3753 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); |
3754 | r_extern = 1; | |
3755 | h = ((struct aout_link_hash_entry *) | |
57402f1e | 3756 | bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info, |
116c20d2 NC |
3757 | pr->u.name, FALSE, FALSE, TRUE)); |
3758 | if (h != NULL | |
3759 | && h->indx >= 0) | |
3760 | r_index = h->indx; | |
3761 | else if (h != NULL) | |
3762 | { | |
3763 | /* We decided to strip this symbol, but it turns out that we | |
3764 | can't. Note that we lose the other and desc information | |
3765 | here. I don't think that will ever matter for a global | |
3766 | symbol. */ | |
3767 | h->indx = -2; | |
3768 | h->written = FALSE; | |
57402f1e | 3769 | if (!aout_link_write_other_symbol (&h->root.root, flaginfo)) |
116c20d2 NC |
3770 | return FALSE; |
3771 | r_index = h->indx; | |
3772 | } | |
3773 | else | |
3774 | { | |
1a72702b AM |
3775 | (*flaginfo->info->callbacks->unattached_reloc) |
3776 | (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0); | |
116c20d2 NC |
3777 | r_index = 0; |
3778 | } | |
3779 | } | |
252b5132 | 3780 | |
57402f1e | 3781 | howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc); |
116c20d2 | 3782 | if (howto == 0) |
252b5132 | 3783 | { |
116c20d2 NC |
3784 | bfd_set_error (bfd_error_bad_value); |
3785 | return FALSE; | |
252b5132 RH |
3786 | } |
3787 | ||
57402f1e NC |
3788 | if (o == obj_textsec (flaginfo->output_bfd)) |
3789 | reloff_ptr = &flaginfo->treloff; | |
3790 | else if (o == obj_datasec (flaginfo->output_bfd)) | |
3791 | reloff_ptr = &flaginfo->dreloff; | |
116c20d2 NC |
3792 | else |
3793 | abort (); | |
3794 | ||
57402f1e | 3795 | if (obj_reloc_entry_size (flaginfo->output_bfd) == RELOC_STD_SIZE) |
252b5132 | 3796 | { |
116c20d2 | 3797 | #ifdef MY_put_reloc |
57402f1e | 3798 | MY_put_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, howto, |
116c20d2 NC |
3799 | &srel); |
3800 | #else | |
3801 | { | |
3802 | int r_pcrel; | |
3803 | int r_baserel; | |
3804 | int r_jmptable; | |
3805 | int r_relative; | |
3806 | int r_length; | |
252b5132 | 3807 | |
116c20d2 NC |
3808 | r_pcrel = (int) howto->pc_relative; |
3809 | r_baserel = (howto->type & 8) != 0; | |
3810 | r_jmptable = (howto->type & 16) != 0; | |
3811 | r_relative = (howto->type & 32) != 0; | |
3812 | r_length = howto->size; | |
252b5132 | 3813 | |
57402f1e NC |
3814 | PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address); |
3815 | if (bfd_header_big_endian (flaginfo->output_bfd)) | |
116c20d2 NC |
3816 | { |
3817 | srel.r_index[0] = r_index >> 16; | |
3818 | srel.r_index[1] = r_index >> 8; | |
3819 | srel.r_index[2] = r_index; | |
3820 | srel.r_type[0] = | |
3821 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
3822 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
3823 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
3824 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
3825 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
3826 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
3827 | } | |
3828 | else | |
3829 | { | |
3830 | srel.r_index[2] = r_index >> 16; | |
3831 | srel.r_index[1] = r_index >> 8; | |
3832 | srel.r_index[0] = r_index; | |
3833 | srel.r_type[0] = | |
3834 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
3835 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
3836 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
3837 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
3838 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
3839 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
3840 | } | |
3841 | } | |
3842 | #endif | |
3843 | rel_ptr = (void *) &srel; | |
252b5132 | 3844 | |
116c20d2 NC |
3845 | /* We have to write the addend into the object file, since |
3846 | standard a.out relocs are in place. It would be more | |
3847 | reliable if we had the current contents of the file here, | |
3848 | rather than assuming zeroes, but we can't read the file since | |
3849 | it was opened using bfd_openw. */ | |
3850 | if (pr->addend != 0) | |
252b5132 | 3851 | { |
116c20d2 NC |
3852 | bfd_size_type size; |
3853 | bfd_reloc_status_type r; | |
3854 | bfd_byte *buf; | |
3855 | bfd_boolean ok; | |
3856 | ||
3857 | size = bfd_get_reloc_size (howto); | |
a50b1753 | 3858 | buf = (bfd_byte *) bfd_zmalloc (size); |
6346d5ca | 3859 | if (buf == NULL && size != 0) |
116c20d2 | 3860 | return FALSE; |
57402f1e | 3861 | r = MY_relocate_contents (howto, flaginfo->output_bfd, |
116c20d2 NC |
3862 | (bfd_vma) pr->addend, buf); |
3863 | switch (r) | |
252b5132 | 3864 | { |
116c20d2 NC |
3865 | case bfd_reloc_ok: |
3866 | break; | |
3867 | default: | |
3868 | case bfd_reloc_outofrange: | |
3869 | abort (); | |
3870 | case bfd_reloc_overflow: | |
1a72702b AM |
3871 | (*flaginfo->info->callbacks->reloc_overflow) |
3872 | (flaginfo->info, NULL, | |
3873 | (p->type == bfd_section_reloc_link_order | |
fd361982 | 3874 | ? bfd_section_name (pr->u.section) |
1a72702b AM |
3875 | : pr->u.name), |
3876 | howto->name, pr->addend, NULL, NULL, (bfd_vma) 0); | |
116c20d2 | 3877 | break; |
252b5132 | 3878 | } |
57402f1e | 3879 | ok = bfd_set_section_contents (flaginfo->output_bfd, o, (void *) buf, |
116c20d2 NC |
3880 | (file_ptr) p->offset, size); |
3881 | free (buf); | |
3882 | if (! ok) | |
3883 | return FALSE; | |
252b5132 RH |
3884 | } |
3885 | } | |
116c20d2 | 3886 | else |
252b5132 | 3887 | { |
116c20d2 | 3888 | #ifdef MY_put_ext_reloc |
57402f1e | 3889 | MY_put_ext_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, |
116c20d2 NC |
3890 | howto, &erel, pr->addend); |
3891 | #else | |
57402f1e | 3892 | PUT_WORD (flaginfo->output_bfd, p->offset, erel.r_address); |
252b5132 | 3893 | |
57402f1e | 3894 | if (bfd_header_big_endian (flaginfo->output_bfd)) |
116c20d2 NC |
3895 | { |
3896 | erel.r_index[0] = r_index >> 16; | |
3897 | erel.r_index[1] = r_index >> 8; | |
3898 | erel.r_index[2] = r_index; | |
3899 | erel.r_type[0] = | |
3900 | ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
3901 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
3902 | } | |
3903 | else | |
3904 | { | |
3905 | erel.r_index[2] = r_index >> 16; | |
3906 | erel.r_index[1] = r_index >> 8; | |
3907 | erel.r_index[0] = r_index; | |
3908 | erel.r_type[0] = | |
3909 | (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
3910 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
3911 | } | |
252b5132 | 3912 | |
57402f1e | 3913 | PUT_WORD (flaginfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend); |
116c20d2 | 3914 | #endif /* MY_put_ext_reloc */ |
252b5132 | 3915 | |
116c20d2 | 3916 | rel_ptr = (void *) &erel; |
252b5132 | 3917 | } |
252b5132 | 3918 | |
57402f1e NC |
3919 | amt = obj_reloc_entry_size (flaginfo->output_bfd); |
3920 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 | |
3921 | || bfd_bwrite (rel_ptr, amt, flaginfo->output_bfd) != amt) | |
116c20d2 | 3922 | return FALSE; |
252b5132 | 3923 | |
57402f1e | 3924 | *reloff_ptr += obj_reloc_entry_size (flaginfo->output_bfd); |
252b5132 | 3925 | |
116c20d2 NC |
3926 | /* Assert that the relocs have not run into the symbols, and that n |
3927 | the text relocs have not run into the data relocs. */ | |
57402f1e NC |
3928 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
3929 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 3930 | || (*reloff_ptr |
57402f1e | 3931 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
116c20d2 NC |
3932 | |
3933 | return TRUE; | |
252b5132 RH |
3934 | } |
3935 | ||
116c20d2 | 3936 | /* Get the section corresponding to a reloc index. */ |
252b5132 | 3937 | |
116c20d2 NC |
3938 | static INLINE asection * |
3939 | aout_reloc_index_to_section (bfd *abfd, int indx) | |
252b5132 | 3940 | { |
116c20d2 | 3941 | switch (indx & N_TYPE) |
252b5132 | 3942 | { |
116c20d2 NC |
3943 | case N_TEXT: return obj_textsec (abfd); |
3944 | case N_DATA: return obj_datasec (abfd); | |
3945 | case N_BSS: return obj_bsssec (abfd); | |
3946 | case N_ABS: | |
3947 | case N_UNDF: return bfd_abs_section_ptr; | |
3948 | default: abort (); | |
252b5132 | 3949 | } |
116c20d2 | 3950 | return NULL; |
252b5132 RH |
3951 | } |
3952 | ||
116c20d2 | 3953 | /* Relocate an a.out section using standard a.out relocs. */ |
252b5132 | 3954 | |
b34976b6 | 3955 | static bfd_boolean |
57402f1e | 3956 | aout_link_input_section_std (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3957 | bfd *input_bfd, |
3958 | asection *input_section, | |
3959 | struct reloc_std_external *relocs, | |
3960 | bfd_size_type rel_size, | |
3961 | bfd_byte *contents) | |
252b5132 | 3962 | { |
116c20d2 NC |
3963 | bfd_boolean (*check_dynamic_reloc) |
3964 | (struct bfd_link_info *, bfd *, asection *, | |
3965 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
3966 | bfd_vma *); | |
252b5132 | 3967 | bfd *output_bfd; |
116c20d2 NC |
3968 | bfd_boolean relocatable; |
3969 | struct external_nlist *syms; | |
252b5132 | 3970 | char *strings; |
116c20d2 | 3971 | struct aout_link_hash_entry **sym_hashes; |
252b5132 | 3972 | int *symbol_map; |
116c20d2 NC |
3973 | bfd_size_type reloc_count; |
3974 | struct reloc_std_external *rel; | |
3975 | struct reloc_std_external *rel_end; | |
252b5132 | 3976 | |
57402f1e | 3977 | output_bfd = flaginfo->output_bfd; |
116c20d2 | 3978 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
252b5132 | 3979 | |
116c20d2 NC |
3980 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE); |
3981 | BFD_ASSERT (input_bfd->xvec->header_byteorder | |
3982 | == output_bfd->xvec->header_byteorder); | |
252b5132 | 3983 | |
0e1862bb | 3984 | relocatable = bfd_link_relocatable (flaginfo->info); |
116c20d2 NC |
3985 | syms = obj_aout_external_syms (input_bfd); |
3986 | strings = obj_aout_external_strings (input_bfd); | |
3987 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 3988 | symbol_map = flaginfo->symbol_map; |
116c20d2 NC |
3989 | |
3990 | reloc_count = rel_size / RELOC_STD_SIZE; | |
3991 | rel = relocs; | |
3992 | rel_end = rel + reloc_count; | |
3993 | for (; rel < rel_end; rel++) | |
252b5132 | 3994 | { |
116c20d2 NC |
3995 | bfd_vma r_addr; |
3996 | int r_index; | |
3997 | int r_extern; | |
3998 | int r_pcrel; | |
3999 | int r_baserel = 0; | |
4000 | reloc_howto_type *howto; | |
4001 | struct aout_link_hash_entry *h = NULL; | |
4002 | bfd_vma relocation; | |
4003 | bfd_reloc_status_type r; | |
252b5132 | 4004 | |
116c20d2 | 4005 | r_addr = GET_SWORD (input_bfd, rel->r_address); |
252b5132 | 4006 | |
116c20d2 NC |
4007 | #ifdef MY_reloc_howto |
4008 | howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel); | |
4009 | #else | |
4010 | { | |
4011 | int r_jmptable; | |
4012 | int r_relative; | |
4013 | int r_length; | |
4014 | unsigned int howto_idx; | |
252b5132 | 4015 | |
116c20d2 NC |
4016 | if (bfd_header_big_endian (input_bfd)) |
4017 | { | |
4018 | r_index = (((unsigned int) rel->r_index[0] << 16) | |
4019 | | ((unsigned int) rel->r_index[1] << 8) | |
4020 | | rel->r_index[2]); | |
4021 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
4022 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
4023 | r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
4024 | r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
4025 | r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
4026 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
4027 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
4028 | } | |
4029 | else | |
4030 | { | |
4031 | r_index = (((unsigned int) rel->r_index[2] << 16) | |
4032 | | ((unsigned int) rel->r_index[1] << 8) | |
4033 | | rel->r_index[0]); | |
4034 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
4035 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
4036 | r_baserel = (0 != (rel->r_type[0] | |
4037 | & RELOC_STD_BITS_BASEREL_LITTLE)); | |
4038 | r_jmptable= (0 != (rel->r_type[0] | |
4039 | & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
4040 | r_relative= (0 != (rel->r_type[0] | |
4041 | & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
4042 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
4043 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
4044 | } | |
252b5132 | 4045 | |
116c20d2 NC |
4046 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel |
4047 | + 16 * r_jmptable + 32 * r_relative); | |
ad756e3f AM |
4048 | if (howto_idx < TABLE_SIZE (howto_table_std)) |
4049 | howto = howto_table_std + howto_idx; | |
4050 | else | |
4051 | howto = NULL; | |
116c20d2 NC |
4052 | } |
4053 | #endif | |
252b5132 | 4054 | |
ad756e3f AM |
4055 | if (howto == NULL) |
4056 | { | |
0aa13fee AM |
4057 | _bfd_error_handler (_("%pB: unsupported relocation type"), |
4058 | input_bfd); | |
ad756e3f AM |
4059 | bfd_set_error (bfd_error_bad_value); |
4060 | return FALSE; | |
4061 | } | |
4062 | ||
116c20d2 | 4063 | if (relocatable) |
252b5132 | 4064 | { |
116c20d2 NC |
4065 | /* We are generating a relocatable output file, and must |
4066 | modify the reloc accordingly. */ | |
4067 | if (r_extern) | |
252b5132 | 4068 | { |
116c20d2 NC |
4069 | /* If we know the symbol this relocation is against, |
4070 | convert it into a relocation against a section. This | |
4071 | is what the native linker does. */ | |
4072 | h = sym_hashes[r_index]; | |
4073 | if (h != NULL | |
4074 | && (h->root.type == bfd_link_hash_defined | |
4075 | || h->root.type == bfd_link_hash_defweak)) | |
252b5132 | 4076 | { |
252b5132 RH |
4077 | asection *output_section; |
4078 | ||
116c20d2 NC |
4079 | /* Change the r_extern value. */ |
4080 | if (bfd_header_big_endian (output_bfd)) | |
4081 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG; | |
4082 | else | |
4083 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE; | |
252b5132 | 4084 | |
116c20d2 NC |
4085 | /* Compute a new r_index. */ |
4086 | output_section = h->root.u.def.section->output_section; | |
252b5132 | 4087 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 | 4088 | r_index = N_TEXT; |
252b5132 | 4089 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 | 4090 | r_index = N_DATA; |
252b5132 | 4091 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 | 4092 | r_index = N_BSS; |
252b5132 | 4093 | else |
116c20d2 | 4094 | r_index = N_ABS; |
252b5132 | 4095 | |
116c20d2 NC |
4096 | /* Add the symbol value and the section VMA to the |
4097 | addend stored in the contents. */ | |
4098 | relocation = (h->root.u.def.value | |
4099 | + output_section->vma | |
4100 | + h->root.u.def.section->output_offset); | |
252b5132 | 4101 | } |
116c20d2 | 4102 | else |
252b5132 | 4103 | { |
116c20d2 NC |
4104 | /* We must change r_index according to the symbol |
4105 | map. */ | |
4106 | r_index = symbol_map[r_index]; | |
252b5132 | 4107 | |
116c20d2 | 4108 | if (r_index == -1) |
252b5132 | 4109 | { |
116c20d2 | 4110 | if (h != NULL) |
252b5132 | 4111 | { |
116c20d2 | 4112 | /* We decided to strip this symbol, but it |
07d6d2b8 AM |
4113 | turns out that we can't. Note that we |
4114 | lose the other and desc information here. | |
4115 | I don't think that will ever matter for a | |
4116 | global symbol. */ | |
116c20d2 | 4117 | if (h->indx < 0) |
252b5132 | 4118 | { |
116c20d2 NC |
4119 | h->indx = -2; |
4120 | h->written = FALSE; | |
7686d77d | 4121 | if (!aout_link_write_other_symbol (&h->root.root, |
57402f1e | 4122 | flaginfo)) |
116c20d2 | 4123 | return FALSE; |
252b5132 | 4124 | } |
116c20d2 NC |
4125 | r_index = h->indx; |
4126 | } | |
4127 | else | |
4128 | { | |
4129 | const char *name; | |
4130 | ||
4131 | name = strings + GET_WORD (input_bfd, | |
4132 | syms[r_index].e_strx); | |
1a72702b AM |
4133 | (*flaginfo->info->callbacks->unattached_reloc) |
4134 | (flaginfo->info, name, | |
4135 | input_bfd, input_section, r_addr); | |
116c20d2 | 4136 | r_index = 0; |
252b5132 RH |
4137 | } |
4138 | } | |
116c20d2 NC |
4139 | |
4140 | relocation = 0; | |
252b5132 RH |
4141 | } |
4142 | ||
116c20d2 NC |
4143 | /* Write out the new r_index value. */ |
4144 | if (bfd_header_big_endian (output_bfd)) | |
252b5132 | 4145 | { |
116c20d2 NC |
4146 | rel->r_index[0] = r_index >> 16; |
4147 | rel->r_index[1] = r_index >> 8; | |
4148 | rel->r_index[2] = r_index; | |
252b5132 RH |
4149 | } |
4150 | else | |
4151 | { | |
116c20d2 NC |
4152 | rel->r_index[2] = r_index >> 16; |
4153 | rel->r_index[1] = r_index >> 8; | |
4154 | rel->r_index[0] = r_index; | |
252b5132 RH |
4155 | } |
4156 | } | |
252b5132 | 4157 | else |
116c20d2 NC |
4158 | { |
4159 | asection *section; | |
252b5132 | 4160 | |
116c20d2 NC |
4161 | /* This is a relocation against a section. We must |
4162 | adjust by the amount that the section moved. */ | |
4163 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4164 | relocation = (section->output_section->vma | |
4165 | + section->output_offset | |
4166 | - section->vma); | |
4167 | } | |
252b5132 | 4168 | |
116c20d2 NC |
4169 | /* Change the address of the relocation. */ |
4170 | PUT_WORD (output_bfd, | |
4171 | r_addr + input_section->output_offset, | |
4172 | rel->r_address); | |
252b5132 | 4173 | |
116c20d2 NC |
4174 | /* Adjust a PC relative relocation by removing the reference |
4175 | to the original address in the section and including the | |
4176 | reference to the new address. */ | |
4177 | if (r_pcrel) | |
4178 | relocation -= (input_section->output_section->vma | |
4179 | + input_section->output_offset | |
4180 | - input_section->vma); | |
e92d460e | 4181 | |
116c20d2 NC |
4182 | #ifdef MY_relocatable_reloc |
4183 | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); | |
4184 | #endif | |
252b5132 | 4185 | |
116c20d2 NC |
4186 | if (relocation == 0) |
4187 | r = bfd_reloc_ok; | |
4188 | else | |
4189 | r = MY_relocate_contents (howto, | |
4190 | input_bfd, relocation, | |
4191 | contents + r_addr); | |
252b5132 | 4192 | } |
116c20d2 NC |
4193 | else |
4194 | { | |
4195 | bfd_boolean hundef; | |
252b5132 | 4196 | |
116c20d2 NC |
4197 | /* We are generating an executable, and must do a full |
4198 | relocation. */ | |
4199 | hundef = FALSE; | |
252b5132 | 4200 | |
116c20d2 NC |
4201 | if (r_extern) |
4202 | { | |
4203 | h = sym_hashes[r_index]; | |
252b5132 | 4204 | |
116c20d2 NC |
4205 | if (h != NULL |
4206 | && (h->root.type == bfd_link_hash_defined | |
4207 | || h->root.type == bfd_link_hash_defweak)) | |
4208 | { | |
4209 | relocation = (h->root.u.def.value | |
4210 | + h->root.u.def.section->output_section->vma | |
4211 | + h->root.u.def.section->output_offset); | |
4212 | } | |
4213 | else if (h != NULL | |
4214 | && h->root.type == bfd_link_hash_undefweak) | |
4215 | relocation = 0; | |
4216 | else | |
4217 | { | |
4218 | hundef = TRUE; | |
4219 | relocation = 0; | |
4220 | } | |
4221 | } | |
4222 | else | |
4223 | { | |
4224 | asection *section; | |
252b5132 | 4225 | |
116c20d2 NC |
4226 | section = aout_reloc_index_to_section (input_bfd, r_index); |
4227 | relocation = (section->output_section->vma | |
4228 | + section->output_offset | |
4229 | - section->vma); | |
4230 | if (r_pcrel) | |
4231 | relocation += input_section->vma; | |
4232 | } | |
252b5132 | 4233 | |
116c20d2 NC |
4234 | if (check_dynamic_reloc != NULL) |
4235 | { | |
4236 | bfd_boolean skip; | |
252b5132 | 4237 | |
116c20d2 | 4238 | if (! ((*check_dynamic_reloc) |
57402f1e | 4239 | (flaginfo->info, input_bfd, input_section, h, |
116c20d2 NC |
4240 | (void *) rel, contents, &skip, &relocation))) |
4241 | return FALSE; | |
4242 | if (skip) | |
4243 | continue; | |
4244 | } | |
252b5132 | 4245 | |
116c20d2 | 4246 | /* Now warn if a global symbol is undefined. We could not |
07d6d2b8 AM |
4247 | do this earlier, because check_dynamic_reloc might want |
4248 | to skip this reloc. */ | |
0e1862bb | 4249 | if (hundef && ! bfd_link_pic (flaginfo->info) && ! r_baserel) |
116c20d2 NC |
4250 | { |
4251 | const char *name; | |
252b5132 | 4252 | |
116c20d2 NC |
4253 | if (h != NULL) |
4254 | name = h->root.root.string; | |
4255 | else | |
4256 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
1a72702b AM |
4257 | (*flaginfo->info->callbacks->undefined_symbol) |
4258 | (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE); | |
116c20d2 | 4259 | } |
252b5132 | 4260 | |
116c20d2 NC |
4261 | r = MY_final_link_relocate (howto, |
4262 | input_bfd, input_section, | |
4263 | contents, r_addr, relocation, | |
4264 | (bfd_vma) 0); | |
252b5132 | 4265 | } |
252b5132 | 4266 | |
116c20d2 NC |
4267 | if (r != bfd_reloc_ok) |
4268 | { | |
4269 | switch (r) | |
4270 | { | |
4271 | default: | |
4272 | case bfd_reloc_outofrange: | |
4273 | abort (); | |
4274 | case bfd_reloc_overflow: | |
4275 | { | |
4276 | const char *name; | |
252b5132 | 4277 | |
116c20d2 NC |
4278 | if (h != NULL) |
4279 | name = NULL; | |
4280 | else if (r_extern) | |
4281 | name = strings + GET_WORD (input_bfd, | |
4282 | syms[r_index].e_strx); | |
4283 | else | |
4284 | { | |
4285 | asection *s; | |
252b5132 | 4286 | |
116c20d2 | 4287 | s = aout_reloc_index_to_section (input_bfd, r_index); |
fd361982 | 4288 | name = bfd_section_name (s); |
116c20d2 | 4289 | } |
1a72702b AM |
4290 | (*flaginfo->info->callbacks->reloc_overflow) |
4291 | (flaginfo->info, (h ? &h->root : NULL), name, howto->name, | |
4292 | (bfd_vma) 0, input_bfd, input_section, r_addr); | |
116c20d2 NC |
4293 | } |
4294 | break; | |
4295 | } | |
4296 | } | |
252b5132 RH |
4297 | } |
4298 | ||
b34976b6 | 4299 | return TRUE; |
252b5132 RH |
4300 | } |
4301 | ||
116c20d2 | 4302 | /* Relocate an a.out section using extended a.out relocs. */ |
252b5132 | 4303 | |
b34976b6 | 4304 | static bfd_boolean |
57402f1e | 4305 | aout_link_input_section_ext (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
4306 | bfd *input_bfd, |
4307 | asection *input_section, | |
4308 | struct reloc_ext_external *relocs, | |
4309 | bfd_size_type rel_size, | |
4310 | bfd_byte *contents) | |
252b5132 | 4311 | { |
b34976b6 | 4312 | bfd_boolean (*check_dynamic_reloc) |
116c20d2 NC |
4313 | (struct bfd_link_info *, bfd *, asection *, |
4314 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
4315 | bfd_vma *); | |
252b5132 | 4316 | bfd *output_bfd; |
1049f94e | 4317 | bfd_boolean relocatable; |
252b5132 RH |
4318 | struct external_nlist *syms; |
4319 | char *strings; | |
4320 | struct aout_link_hash_entry **sym_hashes; | |
4321 | int *symbol_map; | |
4322 | bfd_size_type reloc_count; | |
116c20d2 NC |
4323 | struct reloc_ext_external *rel; |
4324 | struct reloc_ext_external *rel_end; | |
252b5132 | 4325 | |
57402f1e | 4326 | output_bfd = flaginfo->output_bfd; |
252b5132 RH |
4327 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
4328 | ||
116c20d2 | 4329 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE); |
252b5132 RH |
4330 | BFD_ASSERT (input_bfd->xvec->header_byteorder |
4331 | == output_bfd->xvec->header_byteorder); | |
4332 | ||
0e1862bb | 4333 | relocatable = bfd_link_relocatable (flaginfo->info); |
252b5132 RH |
4334 | syms = obj_aout_external_syms (input_bfd); |
4335 | strings = obj_aout_external_strings (input_bfd); | |
4336 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4337 | symbol_map = flaginfo->symbol_map; |
252b5132 | 4338 | |
116c20d2 | 4339 | reloc_count = rel_size / RELOC_EXT_SIZE; |
252b5132 RH |
4340 | rel = relocs; |
4341 | rel_end = rel + reloc_count; | |
4342 | for (; rel < rel_end; rel++) | |
4343 | { | |
4344 | bfd_vma r_addr; | |
4345 | int r_index; | |
4346 | int r_extern; | |
116c20d2 NC |
4347 | unsigned int r_type; |
4348 | bfd_vma r_addend; | |
252b5132 | 4349 | struct aout_link_hash_entry *h = NULL; |
116c20d2 | 4350 | asection *r_section = NULL; |
252b5132 | 4351 | bfd_vma relocation; |
252b5132 RH |
4352 | |
4353 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
4354 | ||
116c20d2 NC |
4355 | if (bfd_header_big_endian (input_bfd)) |
4356 | { | |
4357 | r_index = (((unsigned int) rel->r_index[0] << 16) | |
4358 | | ((unsigned int) rel->r_index[1] << 8) | |
4359 | | rel->r_index[2]); | |
4360 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
4361 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
4362 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
4363 | } | |
4364 | else | |
4365 | { | |
4366 | r_index = (((unsigned int) rel->r_index[2] << 16) | |
4367 | | ((unsigned int) rel->r_index[1] << 8) | |
4368 | | rel->r_index[0]); | |
4369 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
4370 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
4371 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
4372 | } | |
252b5132 | 4373 | |
116c20d2 | 4374 | r_addend = GET_SWORD (input_bfd, rel->r_addend); |
252b5132 | 4375 | |
ad756e3f AM |
4376 | if (r_type >= TABLE_SIZE (howto_table_ext)) |
4377 | { | |
0aa13fee AM |
4378 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4379 | input_bfd, r_type); | |
ad756e3f AM |
4380 | bfd_set_error (bfd_error_bad_value); |
4381 | return FALSE; | |
4382 | } | |
252b5132 | 4383 | |
1049f94e | 4384 | if (relocatable) |
252b5132 | 4385 | { |
1049f94e | 4386 | /* We are generating a relocatable output file, and must |
252b5132 | 4387 | modify the reloc accordingly. */ |
116c20d2 NC |
4388 | if (r_extern |
4389 | || r_type == (unsigned int) RELOC_BASE10 | |
4390 | || r_type == (unsigned int) RELOC_BASE13 | |
4391 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
4392 | { |
4393 | /* If we know the symbol this relocation is against, | |
4394 | convert it into a relocation against a section. This | |
4395 | is what the native linker does. */ | |
116c20d2 NC |
4396 | if (r_type == (unsigned int) RELOC_BASE10 |
4397 | || r_type == (unsigned int) RELOC_BASE13 | |
4398 | || r_type == (unsigned int) RELOC_BASE22) | |
4399 | h = NULL; | |
4400 | else | |
4401 | h = sym_hashes[r_index]; | |
4402 | if (h != NULL | |
252b5132 RH |
4403 | && (h->root.type == bfd_link_hash_defined |
4404 | || h->root.type == bfd_link_hash_defweak)) | |
4405 | { | |
4406 | asection *output_section; | |
4407 | ||
4408 | /* Change the r_extern value. */ | |
4409 | if (bfd_header_big_endian (output_bfd)) | |
116c20d2 | 4410 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG; |
252b5132 | 4411 | else |
116c20d2 | 4412 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE; |
252b5132 RH |
4413 | |
4414 | /* Compute a new r_index. */ | |
4415 | output_section = h->root.u.def.section->output_section; | |
4416 | if (output_section == obj_textsec (output_bfd)) | |
4417 | r_index = N_TEXT; | |
4418 | else if (output_section == obj_datasec (output_bfd)) | |
4419 | r_index = N_DATA; | |
4420 | else if (output_section == obj_bsssec (output_bfd)) | |
4421 | r_index = N_BSS; | |
4422 | else | |
4423 | r_index = N_ABS; | |
4424 | ||
4425 | /* Add the symbol value and the section VMA to the | |
116c20d2 | 4426 | addend. */ |
252b5132 RH |
4427 | relocation = (h->root.u.def.value |
4428 | + output_section->vma | |
4429 | + h->root.u.def.section->output_offset); | |
116c20d2 NC |
4430 | |
4431 | /* Now RELOCATION is the VMA of the final | |
4432 | destination. If this is a PC relative reloc, | |
4433 | then ADDEND is the negative of the source VMA. | |
4434 | We want to set ADDEND to the difference between | |
4435 | the destination VMA and the source VMA, which | |
4436 | means we must adjust RELOCATION by the change in | |
4437 | the source VMA. This is done below. */ | |
252b5132 RH |
4438 | } |
4439 | else | |
4440 | { | |
4441 | /* We must change r_index according to the symbol | |
4442 | map. */ | |
4443 | r_index = symbol_map[r_index]; | |
4444 | ||
4445 | if (r_index == -1) | |
4446 | { | |
4447 | if (h != NULL) | |
4448 | { | |
4449 | /* We decided to strip this symbol, but it | |
07d6d2b8 AM |
4450 | turns out that we can't. Note that we |
4451 | lose the other and desc information here. | |
4452 | I don't think that will ever matter for a | |
4453 | global symbol. */ | |
252b5132 RH |
4454 | if (h->indx < 0) |
4455 | { | |
4456 | h->indx = -2; | |
b34976b6 | 4457 | h->written = FALSE; |
7686d77d | 4458 | if (!aout_link_write_other_symbol (&h->root.root, |
57402f1e | 4459 | flaginfo)) |
b34976b6 | 4460 | return FALSE; |
252b5132 RH |
4461 | } |
4462 | r_index = h->indx; | |
4463 | } | |
4464 | else | |
4465 | { | |
4466 | const char *name; | |
4467 | ||
4468 | name = strings + GET_WORD (input_bfd, | |
4469 | syms[r_index].e_strx); | |
1a72702b AM |
4470 | (*flaginfo->info->callbacks->unattached_reloc) |
4471 | (flaginfo->info, name, | |
4472 | input_bfd, input_section, r_addr); | |
252b5132 RH |
4473 | r_index = 0; |
4474 | } | |
4475 | } | |
4476 | ||
4477 | relocation = 0; | |
116c20d2 NC |
4478 | |
4479 | /* If this is a PC relative reloc, then the addend | |
4480 | is the negative of the source VMA. We must | |
4481 | adjust it by the change in the source VMA. This | |
4482 | is done below. */ | |
252b5132 RH |
4483 | } |
4484 | ||
4485 | /* Write out the new r_index value. */ | |
4486 | if (bfd_header_big_endian (output_bfd)) | |
4487 | { | |
4488 | rel->r_index[0] = r_index >> 16; | |
4489 | rel->r_index[1] = r_index >> 8; | |
4490 | rel->r_index[2] = r_index; | |
4491 | } | |
4492 | else | |
4493 | { | |
4494 | rel->r_index[2] = r_index >> 16; | |
4495 | rel->r_index[1] = r_index >> 8; | |
4496 | rel->r_index[0] = r_index; | |
4497 | } | |
4498 | } | |
4499 | else | |
4500 | { | |
252b5132 RH |
4501 | /* This is a relocation against a section. We must |
4502 | adjust by the amount that the section moved. */ | |
116c20d2 NC |
4503 | r_section = aout_reloc_index_to_section (input_bfd, r_index); |
4504 | relocation = (r_section->output_section->vma | |
4505 | + r_section->output_offset | |
4506 | - r_section->vma); | |
252b5132 | 4507 | |
116c20d2 NC |
4508 | /* If this is a PC relative reloc, then the addend is |
4509 | the difference in VMA between the destination and the | |
4510 | source. We have just adjusted for the change in VMA | |
4511 | of the destination, so we must also adjust by the | |
4512 | change in VMA of the source. This is done below. */ | |
4513 | } | |
252b5132 | 4514 | |
116c20d2 NC |
4515 | /* As described above, we must always adjust a PC relative |
4516 | reloc by the change in VMA of the source. However, if | |
4517 | pcrel_offset is set, then the addend does not include the | |
4518 | location within the section, in which case we don't need | |
4519 | to adjust anything. */ | |
4520 | if (howto_table_ext[r_type].pc_relative | |
4521 | && ! howto_table_ext[r_type].pcrel_offset) | |
252b5132 RH |
4522 | relocation -= (input_section->output_section->vma |
4523 | + input_section->output_offset | |
4524 | - input_section->vma); | |
4525 | ||
116c20d2 NC |
4526 | /* Change the addend if necessary. */ |
4527 | if (relocation != 0) | |
4528 | PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend); | |
252b5132 | 4529 | |
116c20d2 NC |
4530 | /* Change the address of the relocation. */ |
4531 | PUT_WORD (output_bfd, | |
4532 | r_addr + input_section->output_offset, | |
4533 | rel->r_address); | |
252b5132 RH |
4534 | } |
4535 | else | |
4536 | { | |
b34976b6 | 4537 | bfd_boolean hundef; |
116c20d2 | 4538 | bfd_reloc_status_type r; |
252b5132 RH |
4539 | |
4540 | /* We are generating an executable, and must do a full | |
4541 | relocation. */ | |
b34976b6 | 4542 | hundef = FALSE; |
252b5132 RH |
4543 | |
4544 | if (r_extern) | |
4545 | { | |
4546 | h = sym_hashes[r_index]; | |
4547 | ||
116c20d2 | 4548 | if (h != NULL |
252b5132 RH |
4549 | && (h->root.type == bfd_link_hash_defined |
4550 | || h->root.type == bfd_link_hash_defweak)) | |
4551 | { | |
4552 | relocation = (h->root.u.def.value | |
4553 | + h->root.u.def.section->output_section->vma | |
4554 | + h->root.u.def.section->output_offset); | |
4555 | } | |
116c20d2 | 4556 | else if (h != NULL |
252b5132 RH |
4557 | && h->root.type == bfd_link_hash_undefweak) |
4558 | relocation = 0; | |
4559 | else | |
4560 | { | |
b34976b6 | 4561 | hundef = TRUE; |
252b5132 RH |
4562 | relocation = 0; |
4563 | } | |
4564 | } | |
116c20d2 NC |
4565 | else if (r_type == (unsigned int) RELOC_BASE10 |
4566 | || r_type == (unsigned int) RELOC_BASE13 | |
4567 | || r_type == (unsigned int) RELOC_BASE22) | |
4568 | { | |
4569 | struct external_nlist *sym; | |
4570 | int type; | |
4571 | ||
4572 | /* For base relative relocs, r_index is always an index | |
07d6d2b8 | 4573 | into the symbol table, even if r_extern is 0. */ |
116c20d2 NC |
4574 | sym = syms + r_index; |
4575 | type = H_GET_8 (input_bfd, sym->e_type); | |
4576 | if ((type & N_TYPE) == N_TEXT | |
4577 | || type == N_WEAKT) | |
4578 | r_section = obj_textsec (input_bfd); | |
4579 | else if ((type & N_TYPE) == N_DATA | |
4580 | || type == N_WEAKD) | |
4581 | r_section = obj_datasec (input_bfd); | |
4582 | else if ((type & N_TYPE) == N_BSS | |
4583 | || type == N_WEAKB) | |
4584 | r_section = obj_bsssec (input_bfd); | |
4585 | else if ((type & N_TYPE) == N_ABS | |
4586 | || type == N_WEAKA) | |
4587 | r_section = bfd_abs_section_ptr; | |
4588 | else | |
4589 | abort (); | |
4590 | relocation = (r_section->output_section->vma | |
4591 | + r_section->output_offset | |
4592 | + (GET_WORD (input_bfd, sym->e_value) | |
4593 | - r_section->vma)); | |
4594 | } | |
252b5132 RH |
4595 | else |
4596 | { | |
116c20d2 | 4597 | r_section = aout_reloc_index_to_section (input_bfd, r_index); |
252b5132 | 4598 | |
116c20d2 NC |
4599 | /* If this is a PC relative reloc, then R_ADDEND is the |
4600 | difference between the two vmas, or | |
4601 | old_dest_sec + old_dest_off - (old_src_sec + old_src_off) | |
4602 | where | |
4603 | old_dest_sec == section->vma | |
4604 | and | |
4605 | old_src_sec == input_section->vma | |
4606 | and | |
4607 | old_src_off == r_addr | |
4608 | ||
4609 | _bfd_final_link_relocate expects RELOCATION + | |
4610 | R_ADDEND to be the VMA of the destination minus | |
4611 | r_addr (the minus r_addr is because this relocation | |
4612 | is not pcrel_offset, which is a bit confusing and | |
4613 | should, perhaps, be changed), or | |
4614 | new_dest_sec | |
4615 | where | |
4616 | new_dest_sec == output_section->vma + output_offset | |
4617 | We arrange for this to happen by setting RELOCATION to | |
4618 | new_dest_sec + old_src_sec - old_dest_sec | |
4619 | ||
4620 | If this is not a PC relative reloc, then R_ADDEND is | |
4621 | simply the VMA of the destination, so we set | |
4622 | RELOCATION to the change in the destination VMA, or | |
4623 | new_dest_sec - old_dest_sec | |
4624 | */ | |
4625 | relocation = (r_section->output_section->vma | |
4626 | + r_section->output_offset | |
4627 | - r_section->vma); | |
4628 | if (howto_table_ext[r_type].pc_relative) | |
252b5132 RH |
4629 | relocation += input_section->vma; |
4630 | } | |
4631 | ||
4632 | if (check_dynamic_reloc != NULL) | |
4633 | { | |
b34976b6 | 4634 | bfd_boolean skip; |
252b5132 RH |
4635 | |
4636 | if (! ((*check_dynamic_reloc) | |
57402f1e | 4637 | (flaginfo->info, input_bfd, input_section, h, |
116c20d2 | 4638 | (void *) rel, contents, &skip, &relocation))) |
b34976b6 | 4639 | return FALSE; |
252b5132 RH |
4640 | if (skip) |
4641 | continue; | |
4642 | } | |
4643 | ||
4644 | /* Now warn if a global symbol is undefined. We could not | |
07d6d2b8 AM |
4645 | do this earlier, because check_dynamic_reloc might want |
4646 | to skip this reloc. */ | |
116c20d2 | 4647 | if (hundef |
0e1862bb | 4648 | && ! bfd_link_pic (flaginfo->info) |
116c20d2 NC |
4649 | && r_type != (unsigned int) RELOC_BASE10 |
4650 | && r_type != (unsigned int) RELOC_BASE13 | |
4651 | && r_type != (unsigned int) RELOC_BASE22) | |
252b5132 RH |
4652 | { |
4653 | const char *name; | |
4654 | ||
4655 | if (h != NULL) | |
4656 | name = h->root.root.string; | |
4657 | else | |
4658 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
1a72702b AM |
4659 | (*flaginfo->info->callbacks->undefined_symbol) |
4660 | (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE); | |
252b5132 RH |
4661 | } |
4662 | ||
116c20d2 NC |
4663 | if (r_type != (unsigned int) RELOC_SPARC_REV32) |
4664 | r = MY_final_link_relocate (howto_table_ext + r_type, | |
4665 | input_bfd, input_section, | |
4666 | contents, r_addr, relocation, | |
4667 | r_addend); | |
4668 | else | |
252b5132 | 4669 | { |
116c20d2 | 4670 | bfd_vma x; |
252b5132 | 4671 | |
116c20d2 NC |
4672 | x = bfd_get_32 (input_bfd, contents + r_addr); |
4673 | x = x + relocation + r_addend; | |
4674 | bfd_putl32 (/*input_bfd,*/ x, contents + r_addr); | |
4675 | r = bfd_reloc_ok; | |
4676 | } | |
4677 | ||
4678 | if (r != bfd_reloc_ok) | |
4679 | { | |
4680 | switch (r) | |
4681 | { | |
4682 | default: | |
4683 | case bfd_reloc_outofrange: | |
4684 | abort (); | |
4685 | case bfd_reloc_overflow: | |
252b5132 | 4686 | { |
116c20d2 | 4687 | const char *name; |
252b5132 | 4688 | |
116c20d2 NC |
4689 | if (h != NULL) |
4690 | name = NULL; | |
4691 | else if (r_extern | |
4692 | || r_type == (unsigned int) RELOC_BASE10 | |
4693 | || r_type == (unsigned int) RELOC_BASE13 | |
4694 | || r_type == (unsigned int) RELOC_BASE22) | |
4695 | name = strings + GET_WORD (input_bfd, | |
4696 | syms[r_index].e_strx); | |
4697 | else | |
4698 | { | |
4699 | asection *s; | |
4700 | ||
4701 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
fd361982 | 4702 | name = bfd_section_name (s); |
116c20d2 | 4703 | } |
1a72702b AM |
4704 | (*flaginfo->info->callbacks->reloc_overflow) |
4705 | (flaginfo->info, (h ? &h->root : NULL), name, | |
4706 | howto_table_ext[r_type].name, | |
4707 | r_addend, input_bfd, input_section, r_addr); | |
252b5132 | 4708 | } |
116c20d2 NC |
4709 | break; |
4710 | } | |
252b5132 RH |
4711 | } |
4712 | } | |
4713 | } | |
4714 | ||
b34976b6 | 4715 | return TRUE; |
252b5132 RH |
4716 | } |
4717 | ||
116c20d2 NC |
4718 | /* Link an a.out section into the output file. */ |
4719 | ||
4720 | static bfd_boolean | |
57402f1e | 4721 | aout_link_input_section (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
4722 | bfd *input_bfd, |
4723 | asection *input_section, | |
4724 | file_ptr *reloff_ptr, | |
4725 | bfd_size_type rel_size) | |
4726 | { | |
4727 | bfd_size_type input_size; | |
4728 | void * relocs; | |
4729 | ||
4730 | /* Get the section contents. */ | |
4731 | input_size = input_section->size; | |
4732 | if (! bfd_get_section_contents (input_bfd, input_section, | |
57402f1e | 4733 | (void *) flaginfo->contents, |
116c20d2 NC |
4734 | (file_ptr) 0, input_size)) |
4735 | return FALSE; | |
4736 | ||
4737 | /* Read in the relocs if we haven't already done it. */ | |
4738 | if (aout_section_data (input_section) != NULL | |
4739 | && aout_section_data (input_section)->relocs != NULL) | |
4740 | relocs = aout_section_data (input_section)->relocs; | |
4741 | else | |
4742 | { | |
57402f1e | 4743 | relocs = flaginfo->relocs; |
116c20d2 NC |
4744 | if (rel_size > 0) |
4745 | { | |
4746 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
4747 | || bfd_bread (relocs, rel_size, input_bfd) != rel_size) | |
4748 | return FALSE; | |
4749 | } | |
4750 | } | |
4751 | ||
4752 | /* Relocate the section contents. */ | |
4753 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) | |
4754 | { | |
57402f1e | 4755 | if (! aout_link_input_section_std (flaginfo, input_bfd, input_section, |
116c20d2 | 4756 | (struct reloc_std_external *) relocs, |
57402f1e | 4757 | rel_size, flaginfo->contents)) |
116c20d2 NC |
4758 | return FALSE; |
4759 | } | |
4760 | else | |
4761 | { | |
57402f1e | 4762 | if (! aout_link_input_section_ext (flaginfo, input_bfd, input_section, |
116c20d2 | 4763 | (struct reloc_ext_external *) relocs, |
57402f1e | 4764 | rel_size, flaginfo->contents)) |
116c20d2 NC |
4765 | return FALSE; |
4766 | } | |
4767 | ||
4768 | /* Write out the section contents. */ | |
57402f1e | 4769 | if (! bfd_set_section_contents (flaginfo->output_bfd, |
116c20d2 | 4770 | input_section->output_section, |
57402f1e | 4771 | (void *) flaginfo->contents, |
116c20d2 NC |
4772 | (file_ptr) input_section->output_offset, |
4773 | input_size)) | |
4774 | return FALSE; | |
4775 | ||
4776 | /* If we are producing relocatable output, the relocs were | |
4777 | modified, and we now write them out. */ | |
0e1862bb | 4778 | if (bfd_link_relocatable (flaginfo->info) && rel_size > 0) |
116c20d2 | 4779 | { |
57402f1e | 4780 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) |
116c20d2 | 4781 | return FALSE; |
57402f1e | 4782 | if (bfd_bwrite (relocs, rel_size, flaginfo->output_bfd) != rel_size) |
116c20d2 NC |
4783 | return FALSE; |
4784 | *reloff_ptr += rel_size; | |
4785 | ||
4786 | /* Assert that the relocs have not run into the symbols, and | |
4787 | that if these are the text relocs they have not run into the | |
4788 | data relocs. */ | |
57402f1e NC |
4789 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
4790 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 4791 | || (*reloff_ptr |
57402f1e | 4792 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
116c20d2 NC |
4793 | } |
4794 | ||
4795 | return TRUE; | |
4796 | } | |
4797 | ||
4798 | /* Adjust and write out the symbols for an a.out file. Set the new | |
4799 | symbol indices into a symbol_map. */ | |
252b5132 | 4800 | |
b34976b6 | 4801 | static bfd_boolean |
57402f1e | 4802 | aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
252b5132 | 4803 | { |
252b5132 | 4804 | bfd *output_bfd; |
116c20d2 | 4805 | bfd_size_type sym_count; |
252b5132 | 4806 | char *strings; |
116c20d2 NC |
4807 | enum bfd_link_strip strip; |
4808 | enum bfd_link_discard discard; | |
4809 | struct external_nlist *outsym; | |
4810 | bfd_size_type strtab_index; | |
4811 | struct external_nlist *sym; | |
4812 | struct external_nlist *sym_end; | |
4813 | struct aout_link_hash_entry **sym_hash; | |
252b5132 | 4814 | int *symbol_map; |
116c20d2 NC |
4815 | bfd_boolean pass; |
4816 | bfd_boolean skip_next; | |
252b5132 | 4817 | |
57402f1e | 4818 | output_bfd = flaginfo->output_bfd; |
116c20d2 NC |
4819 | sym_count = obj_aout_external_sym_count (input_bfd); |
4820 | strings = obj_aout_external_strings (input_bfd); | |
57402f1e NC |
4821 | strip = flaginfo->info->strip; |
4822 | discard = flaginfo->info->discard; | |
4823 | outsym = flaginfo->output_syms; | |
252b5132 | 4824 | |
116c20d2 NC |
4825 | /* First write out a symbol for this object file, unless we are |
4826 | discarding such symbols. */ | |
4827 | if (strip != strip_all | |
4828 | && (strip != strip_some | |
57402f1e | 4829 | || bfd_hash_lookup (flaginfo->info->keep_hash, input_bfd->filename, |
116c20d2 NC |
4830 | FALSE, FALSE) != NULL) |
4831 | && discard != discard_all) | |
4832 | { | |
4833 | H_PUT_8 (output_bfd, N_TEXT, outsym->e_type); | |
4834 | H_PUT_8 (output_bfd, 0, outsym->e_other); | |
4835 | H_PUT_16 (output_bfd, 0, outsym->e_desc); | |
57402f1e | 4836 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
116c20d2 NC |
4837 | input_bfd->filename, FALSE); |
4838 | if (strtab_index == (bfd_size_type) -1) | |
4839 | return FALSE; | |
4840 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
4841 | PUT_WORD (output_bfd, | |
fd361982 | 4842 | (bfd_section_vma (obj_textsec (input_bfd)->output_section) |
116c20d2 NC |
4843 | + obj_textsec (input_bfd)->output_offset), |
4844 | outsym->e_value); | |
4845 | ++obj_aout_external_sym_count (output_bfd); | |
4846 | ++outsym; | |
4847 | } | |
252b5132 | 4848 | |
116c20d2 NC |
4849 | pass = FALSE; |
4850 | skip_next = FALSE; | |
4851 | sym = obj_aout_external_syms (input_bfd); | |
4852 | sym_end = sym + sym_count; | |
4853 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4854 | symbol_map = flaginfo->symbol_map; |
116c20d2 NC |
4855 | memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map); |
4856 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) | |
252b5132 | 4857 | { |
116c20d2 NC |
4858 | const char *name; |
4859 | int type; | |
4860 | struct aout_link_hash_entry *h; | |
4861 | bfd_boolean skip; | |
4862 | asection *symsec; | |
4863 | bfd_vma val = 0; | |
4864 | bfd_boolean copy; | |
252b5132 | 4865 | |
116c20d2 | 4866 | /* We set *symbol_map to 0 above for all symbols. If it has |
07d6d2b8 AM |
4867 | already been set to -1 for this symbol, it means that we are |
4868 | discarding it because it appears in a duplicate header file. | |
4869 | See the N_BINCL code below. */ | |
116c20d2 NC |
4870 | if (*symbol_map == -1) |
4871 | continue; | |
252b5132 | 4872 | |
116c20d2 | 4873 | /* Initialize *symbol_map to -1, which means that the symbol was |
07d6d2b8 AM |
4874 | not copied into the output file. We will change it later if |
4875 | we do copy the symbol over. */ | |
116c20d2 NC |
4876 | *symbol_map = -1; |
4877 | ||
4878 | type = H_GET_8 (input_bfd, sym->e_type); | |
4879 | name = strings + GET_WORD (input_bfd, sym->e_strx); | |
4880 | ||
4881 | h = NULL; | |
4882 | ||
4883 | if (pass) | |
252b5132 | 4884 | { |
116c20d2 NC |
4885 | /* Pass this symbol through. It is the target of an |
4886 | indirect or warning symbol. */ | |
4887 | val = GET_WORD (input_bfd, sym->e_value); | |
4888 | pass = FALSE; | |
252b5132 | 4889 | } |
116c20d2 | 4890 | else if (skip_next) |
252b5132 | 4891 | { |
116c20d2 NC |
4892 | /* Skip this symbol, which is the target of an indirect |
4893 | symbol that we have changed to no longer be an indirect | |
4894 | symbol. */ | |
4895 | skip_next = FALSE; | |
4896 | continue; | |
252b5132 | 4897 | } |
116c20d2 NC |
4898 | else |
4899 | { | |
4900 | struct aout_link_hash_entry *hresolve; | |
252b5132 | 4901 | |
116c20d2 NC |
4902 | /* We have saved the hash table entry for this symbol, if |
4903 | there is one. Note that we could just look it up again | |
4904 | in the hash table, provided we first check that it is an | |
4905 | external symbol. */ | |
4906 | h = *sym_hash; | |
252b5132 | 4907 | |
116c20d2 | 4908 | /* Use the name from the hash table, in case the symbol was |
07d6d2b8 | 4909 | wrapped. */ |
116c20d2 NC |
4910 | if (h != NULL |
4911 | && h->root.type != bfd_link_hash_warning) | |
4912 | name = h->root.root.string; | |
252b5132 | 4913 | |
116c20d2 NC |
4914 | /* If this is an indirect or warning symbol, then change |
4915 | hresolve to the base symbol. We also change *sym_hash so | |
4916 | that the relocation routines relocate against the real | |
4917 | symbol. */ | |
4918 | hresolve = h; | |
4919 | if (h != (struct aout_link_hash_entry *) NULL | |
4920 | && (h->root.type == bfd_link_hash_indirect | |
4921 | || h->root.type == bfd_link_hash_warning)) | |
252b5132 | 4922 | { |
116c20d2 NC |
4923 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; |
4924 | while (hresolve->root.type == bfd_link_hash_indirect | |
4925 | || hresolve->root.type == bfd_link_hash_warning) | |
4926 | hresolve = ((struct aout_link_hash_entry *) | |
4927 | hresolve->root.u.i.link); | |
4928 | *sym_hash = hresolve; | |
4929 | } | |
4930 | ||
4931 | /* If the symbol has already been written out, skip it. */ | |
4932 | if (h != NULL | |
4933 | && h->written) | |
4934 | { | |
4935 | if ((type & N_TYPE) == N_INDR | |
4936 | || type == N_WARNING) | |
4937 | skip_next = TRUE; | |
4938 | *symbol_map = h->indx; | |
4939 | continue; | |
4940 | } | |
4941 | ||
4942 | /* See if we are stripping this symbol. */ | |
4943 | skip = FALSE; | |
4944 | switch (strip) | |
4945 | { | |
4946 | case strip_none: | |
4947 | break; | |
4948 | case strip_debugger: | |
4949 | if ((type & N_STAB) != 0) | |
4950 | skip = TRUE; | |
4951 | break; | |
4952 | case strip_some: | |
57402f1e | 4953 | if (bfd_hash_lookup (flaginfo->info->keep_hash, name, FALSE, FALSE) |
116c20d2 NC |
4954 | == NULL) |
4955 | skip = TRUE; | |
4956 | break; | |
4957 | case strip_all: | |
4958 | skip = TRUE; | |
4959 | break; | |
4960 | } | |
4961 | if (skip) | |
4962 | { | |
4963 | if (h != NULL) | |
4964 | h->written = TRUE; | |
4965 | continue; | |
4966 | } | |
4967 | ||
4968 | /* Get the value of the symbol. */ | |
4969 | if ((type & N_TYPE) == N_TEXT | |
4970 | || type == N_WEAKT) | |
4971 | symsec = obj_textsec (input_bfd); | |
4972 | else if ((type & N_TYPE) == N_DATA | |
4973 | || type == N_WEAKD) | |
4974 | symsec = obj_datasec (input_bfd); | |
4975 | else if ((type & N_TYPE) == N_BSS | |
4976 | || type == N_WEAKB) | |
4977 | symsec = obj_bsssec (input_bfd); | |
4978 | else if ((type & N_TYPE) == N_ABS | |
4979 | || type == N_WEAKA) | |
4980 | symsec = bfd_abs_section_ptr; | |
4981 | else if (((type & N_TYPE) == N_INDR | |
4982 | && (hresolve == NULL | |
4983 | || (hresolve->root.type != bfd_link_hash_defined | |
4984 | && hresolve->root.type != bfd_link_hash_defweak | |
4985 | && hresolve->root.type != bfd_link_hash_common))) | |
4986 | || type == N_WARNING) | |
4987 | { | |
4988 | /* Pass the next symbol through unchanged. The | |
4989 | condition above for indirect symbols is so that if | |
4990 | the indirect symbol was defined, we output it with | |
4991 | the correct definition so the debugger will | |
4992 | understand it. */ | |
4993 | pass = TRUE; | |
4994 | val = GET_WORD (input_bfd, sym->e_value); | |
4995 | symsec = NULL; | |
4996 | } | |
4997 | else if ((type & N_STAB) != 0) | |
4998 | { | |
4999 | val = GET_WORD (input_bfd, sym->e_value); | |
5000 | symsec = NULL; | |
5001 | } | |
5002 | else | |
5003 | { | |
5004 | /* If we get here with an indirect symbol, it means that | |
5005 | we are outputting it with a real definition. In such | |
5006 | a case we do not want to output the next symbol, | |
5007 | which is the target of the indirection. */ | |
5008 | if ((type & N_TYPE) == N_INDR) | |
5009 | skip_next = TRUE; | |
5010 | ||
5011 | symsec = NULL; | |
5012 | ||
5013 | /* We need to get the value from the hash table. We use | |
5014 | hresolve so that if we have defined an indirect | |
5015 | symbol we output the final definition. */ | |
5016 | if (h == NULL) | |
5017 | { | |
5018 | switch (type & N_TYPE) | |
5019 | { | |
5020 | case N_SETT: | |
5021 | symsec = obj_textsec (input_bfd); | |
5022 | break; | |
5023 | case N_SETD: | |
5024 | symsec = obj_datasec (input_bfd); | |
5025 | break; | |
5026 | case N_SETB: | |
5027 | symsec = obj_bsssec (input_bfd); | |
5028 | break; | |
5029 | case N_SETA: | |
5030 | symsec = bfd_abs_section_ptr; | |
5031 | break; | |
5032 | default: | |
5033 | val = 0; | |
5034 | break; | |
5035 | } | |
5036 | } | |
5037 | else if (hresolve->root.type == bfd_link_hash_defined | |
5038 | || hresolve->root.type == bfd_link_hash_defweak) | |
252b5132 | 5039 | { |
116c20d2 | 5040 | asection *input_section; |
252b5132 RH |
5041 | asection *output_section; |
5042 | ||
116c20d2 NC |
5043 | /* This case usually means a common symbol which was |
5044 | turned into a defined symbol. */ | |
5045 | input_section = hresolve->root.u.def.section; | |
5046 | output_section = input_section->output_section; | |
5047 | BFD_ASSERT (bfd_is_abs_section (output_section) | |
5048 | || output_section->owner == output_bfd); | |
5049 | val = (hresolve->root.u.def.value | |
fd361982 | 5050 | + bfd_section_vma (output_section) |
116c20d2 NC |
5051 | + input_section->output_offset); |
5052 | ||
5053 | /* Get the correct type based on the section. If | |
5054 | this is a constructed set, force it to be | |
5055 | globally visible. */ | |
5056 | if (type == N_SETT | |
5057 | || type == N_SETD | |
5058 | || type == N_SETB | |
5059 | || type == N_SETA) | |
5060 | type |= N_EXT; | |
5061 | ||
5062 | type &=~ N_TYPE; | |
252b5132 | 5063 | |
252b5132 | 5064 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 NC |
5065 | type |= (hresolve->root.type == bfd_link_hash_defined |
5066 | ? N_TEXT | |
5067 | : N_WEAKT); | |
252b5132 | 5068 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 NC |
5069 | type |= (hresolve->root.type == bfd_link_hash_defined |
5070 | ? N_DATA | |
5071 | : N_WEAKD); | |
252b5132 | 5072 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 NC |
5073 | type |= (hresolve->root.type == bfd_link_hash_defined |
5074 | ? N_BSS | |
5075 | : N_WEAKB); | |
252b5132 | 5076 | else |
116c20d2 NC |
5077 | type |= (hresolve->root.type == bfd_link_hash_defined |
5078 | ? N_ABS | |
5079 | : N_WEAKA); | |
5080 | } | |
5081 | else if (hresolve->root.type == bfd_link_hash_common) | |
5082 | val = hresolve->root.u.c.size; | |
5083 | else if (hresolve->root.type == bfd_link_hash_undefweak) | |
5084 | { | |
5085 | val = 0; | |
5086 | type = N_WEAKU; | |
252b5132 RH |
5087 | } |
5088 | else | |
116c20d2 NC |
5089 | val = 0; |
5090 | } | |
5091 | if (symsec != NULL) | |
5092 | val = (symsec->output_section->vma | |
5093 | + symsec->output_offset | |
5094 | + (GET_WORD (input_bfd, sym->e_value) | |
5095 | - symsec->vma)); | |
5096 | ||
5097 | /* If this is a global symbol set the written flag, and if | |
5098 | it is a local symbol see if we should discard it. */ | |
5099 | if (h != NULL) | |
5100 | { | |
5101 | h->written = TRUE; | |
5102 | h->indx = obj_aout_external_sym_count (output_bfd); | |
5103 | } | |
5104 | else if ((type & N_TYPE) != N_SETT | |
5105 | && (type & N_TYPE) != N_SETD | |
5106 | && (type & N_TYPE) != N_SETB | |
5107 | && (type & N_TYPE) != N_SETA) | |
5108 | { | |
5109 | switch (discard) | |
252b5132 | 5110 | { |
116c20d2 NC |
5111 | case discard_none: |
5112 | case discard_sec_merge: | |
5113 | break; | |
5114 | case discard_l: | |
5115 | if ((type & N_STAB) == 0 | |
5116 | && bfd_is_local_label_name (input_bfd, name)) | |
5117 | skip = TRUE; | |
5118 | break; | |
5119 | case discard_all: | |
5120 | skip = TRUE; | |
5121 | break; | |
5122 | } | |
5123 | if (skip) | |
5124 | { | |
5125 | pass = FALSE; | |
5126 | continue; | |
5127 | } | |
5128 | } | |
252b5132 | 5129 | |
116c20d2 NC |
5130 | /* An N_BINCL symbol indicates the start of the stabs |
5131 | entries for a header file. We need to scan ahead to the | |
5132 | next N_EINCL symbol, ignoring nesting, adding up all the | |
5133 | characters in the symbol names, not including the file | |
5134 | numbers in types (the first number after an open | |
5135 | parenthesis). */ | |
5136 | if (type == (int) N_BINCL) | |
5137 | { | |
5138 | struct external_nlist *incl_sym; | |
5139 | int nest; | |
5140 | struct aout_link_includes_entry *incl_entry; | |
5141 | struct aout_link_includes_totals *t; | |
5142 | ||
5143 | val = 0; | |
5144 | nest = 0; | |
5145 | for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) | |
5146 | { | |
5147 | int incl_type; | |
5148 | ||
5149 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); | |
5150 | if (incl_type == (int) N_EINCL) | |
252b5132 | 5151 | { |
116c20d2 NC |
5152 | if (nest == 0) |
5153 | break; | |
5154 | --nest; | |
5155 | } | |
5156 | else if (incl_type == (int) N_BINCL) | |
5157 | ++nest; | |
5158 | else if (nest == 0) | |
5159 | { | |
5160 | const char *s; | |
5161 | ||
5162 | s = strings + GET_WORD (input_bfd, incl_sym->e_strx); | |
5163 | for (; *s != '\0'; s++) | |
252b5132 | 5164 | { |
116c20d2 NC |
5165 | val += *s; |
5166 | if (*s == '(') | |
252b5132 | 5167 | { |
116c20d2 NC |
5168 | /* Skip the file number. */ |
5169 | ++s; | |
5170 | while (ISDIGIT (*s)) | |
5171 | ++s; | |
5172 | --s; | |
252b5132 | 5173 | } |
252b5132 | 5174 | } |
116c20d2 NC |
5175 | } |
5176 | } | |
252b5132 | 5177 | |
116c20d2 | 5178 | /* If we have already included a header file with the |
07d6d2b8 AM |
5179 | same value, then replace this one with an N_EXCL |
5180 | symbol. */ | |
57402f1e NC |
5181 | copy = (bfd_boolean) (! flaginfo->info->keep_memory); |
5182 | incl_entry = aout_link_includes_lookup (&flaginfo->includes, | |
116c20d2 NC |
5183 | name, TRUE, copy); |
5184 | if (incl_entry == NULL) | |
5185 | return FALSE; | |
5186 | for (t = incl_entry->totals; t != NULL; t = t->next) | |
5187 | if (t->total == val) | |
5188 | break; | |
5189 | if (t == NULL) | |
5190 | { | |
5191 | /* This is the first time we have seen this header | |
07d6d2b8 | 5192 | file with this set of stabs strings. */ |
a50b1753 | 5193 | t = (struct aout_link_includes_totals *) |
07d6d2b8 | 5194 | bfd_hash_allocate (&flaginfo->includes.root, |
116c20d2 NC |
5195 | sizeof *t); |
5196 | if (t == NULL) | |
5197 | return FALSE; | |
5198 | t->total = val; | |
5199 | t->next = incl_entry->totals; | |
5200 | incl_entry->totals = t; | |
5201 | } | |
5202 | else | |
5203 | { | |
5204 | int *incl_map; | |
5205 | ||
5206 | /* This is a duplicate header file. We must change | |
07d6d2b8 AM |
5207 | it to be an N_EXCL entry, and mark all the |
5208 | included symbols to prevent outputting them. */ | |
116c20d2 NC |
5209 | type = (int) N_EXCL; |
5210 | ||
5211 | nest = 0; | |
5212 | for (incl_sym = sym + 1, incl_map = symbol_map + 1; | |
5213 | incl_sym < sym_end; | |
5214 | incl_sym++, incl_map++) | |
5215 | { | |
5216 | int incl_type; | |
5217 | ||
5218 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); | |
5219 | if (incl_type == (int) N_EINCL) | |
5220 | { | |
5221 | if (nest == 0) | |
5222 | { | |
5223 | *incl_map = -1; | |
5224 | break; | |
5225 | } | |
5226 | --nest; | |
252b5132 | 5227 | } |
116c20d2 NC |
5228 | else if (incl_type == (int) N_BINCL) |
5229 | ++nest; | |
5230 | else if (nest == 0) | |
5231 | *incl_map = -1; | |
252b5132 | 5232 | } |
252b5132 RH |
5233 | } |
5234 | } | |
116c20d2 NC |
5235 | } |
5236 | ||
5237 | /* Copy this symbol into the list of symbols we are going to | |
5238 | write out. */ | |
5239 | H_PUT_8 (output_bfd, type, outsym->e_type); | |
5240 | H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other); | |
5241 | H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc); | |
5242 | copy = FALSE; | |
57402f1e | 5243 | if (! flaginfo->info->keep_memory) |
116c20d2 NC |
5244 | { |
5245 | /* name points into a string table which we are going to | |
5246 | free. If there is a hash table entry, use that string. | |
5247 | Otherwise, copy name into memory. */ | |
5248 | if (h != NULL) | |
5249 | name = h->root.root.string; | |
252b5132 | 5250 | else |
116c20d2 NC |
5251 | copy = TRUE; |
5252 | } | |
57402f1e | 5253 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
116c20d2 NC |
5254 | name, copy); |
5255 | if (strtab_index == (bfd_size_type) -1) | |
5256 | return FALSE; | |
5257 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
5258 | PUT_WORD (output_bfd, val, outsym->e_value); | |
5259 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
5260 | ++obj_aout_external_sym_count (output_bfd); | |
5261 | ++outsym; | |
5262 | } | |
252b5132 | 5263 | |
116c20d2 | 5264 | /* Write out the output symbols we have just constructed. */ |
57402f1e | 5265 | if (outsym > flaginfo->output_syms) |
116c20d2 NC |
5266 | { |
5267 | bfd_size_type outsym_size; | |
252b5132 | 5268 | |
57402f1e | 5269 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0) |
116c20d2 | 5270 | return FALSE; |
57402f1e | 5271 | outsym_size = outsym - flaginfo->output_syms; |
116c20d2 | 5272 | outsym_size *= EXTERNAL_NLIST_SIZE; |
57402f1e | 5273 | if (bfd_bwrite ((void *) flaginfo->output_syms, outsym_size, output_bfd) |
116c20d2 NC |
5274 | != outsym_size) |
5275 | return FALSE; | |
57402f1e | 5276 | flaginfo->symoff += outsym_size; |
116c20d2 | 5277 | } |
252b5132 | 5278 | |
116c20d2 NC |
5279 | return TRUE; |
5280 | } | |
252b5132 | 5281 | |
116c20d2 | 5282 | /* Link an a.out input BFD into the output file. */ |
252b5132 | 5283 | |
116c20d2 | 5284 | static bfd_boolean |
57402f1e | 5285 | aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
116c20d2 | 5286 | { |
116c20d2 | 5287 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); |
252b5132 | 5288 | |
116c20d2 NC |
5289 | /* If this is a dynamic object, it may need special handling. */ |
5290 | if ((input_bfd->flags & DYNAMIC) != 0 | |
5291 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
5292 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
57402f1e | 5293 | (flaginfo->info, input_bfd)); |
252b5132 | 5294 | |
116c20d2 | 5295 | /* Get the symbols. We probably have them already, unless |
57402f1e | 5296 | flaginfo->info->keep_memory is FALSE. */ |
116c20d2 NC |
5297 | if (! aout_get_external_symbols (input_bfd)) |
5298 | return FALSE; | |
252b5132 | 5299 | |
116c20d2 | 5300 | /* Write out the symbols and get a map of the new indices. The map |
57402f1e NC |
5301 | is placed into flaginfo->symbol_map. */ |
5302 | if (! aout_link_write_symbols (flaginfo, input_bfd)) | |
116c20d2 | 5303 | return FALSE; |
252b5132 | 5304 | |
116c20d2 NC |
5305 | /* Relocate and write out the sections. These functions use the |
5306 | symbol map created by aout_link_write_symbols. The linker_mark | |
5307 | field will be set if these sections are to be included in the | |
5308 | link, which will normally be the case. */ | |
5309 | if (obj_textsec (input_bfd)->linker_mark) | |
5310 | { | |
57402f1e | 5311 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 5312 | obj_textsec (input_bfd), |
57402f1e | 5313 | &flaginfo->treloff, |
116c20d2 NC |
5314 | exec_hdr (input_bfd)->a_trsize)) |
5315 | return FALSE; | |
5316 | } | |
5317 | if (obj_datasec (input_bfd)->linker_mark) | |
5318 | { | |
57402f1e | 5319 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 5320 | obj_datasec (input_bfd), |
57402f1e | 5321 | &flaginfo->dreloff, |
116c20d2 NC |
5322 | exec_hdr (input_bfd)->a_drsize)) |
5323 | return FALSE; | |
5324 | } | |
5325 | ||
5326 | /* If we are not keeping memory, we don't need the symbols any | |
5327 | longer. We still need them if we are keeping memory, because the | |
5328 | strings in the hash table point into them. */ | |
57402f1e | 5329 | if (! flaginfo->info->keep_memory) |
116c20d2 NC |
5330 | { |
5331 | if (! aout_link_free_symbols (input_bfd)) | |
5332 | return FALSE; | |
5333 | } | |
5334 | ||
5335 | return TRUE; | |
5336 | } | |
5337 | ||
5338 | /* Do the final link step. This is called on the output BFD. The | |
5339 | INFO structure should point to a list of BFDs linked through the | |
c72f2fb2 | 5340 | link.next field which can be used to find each BFD which takes part |
116c20d2 NC |
5341 | in the output. Also, each section in ABFD should point to a list |
5342 | of bfd_link_order structures which list all the input sections for | |
5343 | the output section. */ | |
5344 | ||
5345 | bfd_boolean | |
5346 | NAME (aout, final_link) (bfd *abfd, | |
5347 | struct bfd_link_info *info, | |
5348 | void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *)) | |
5349 | { | |
5350 | struct aout_final_link_info aout_info; | |
5351 | bfd_boolean includes_hash_initialized = FALSE; | |
5352 | bfd *sub; | |
5353 | bfd_size_type trsize, drsize; | |
5354 | bfd_size_type max_contents_size; | |
5355 | bfd_size_type max_relocs_size; | |
5356 | bfd_size_type max_sym_count; | |
116c20d2 NC |
5357 | struct bfd_link_order *p; |
5358 | asection *o; | |
5359 | bfd_boolean have_link_order_relocs; | |
5360 | ||
0e1862bb | 5361 | if (bfd_link_pic (info)) |
116c20d2 NC |
5362 | abfd->flags |= DYNAMIC; |
5363 | ||
5364 | aout_info.info = info; | |
5365 | aout_info.output_bfd = abfd; | |
5366 | aout_info.contents = NULL; | |
5367 | aout_info.relocs = NULL; | |
5368 | aout_info.symbol_map = NULL; | |
5369 | aout_info.output_syms = NULL; | |
252b5132 | 5370 | |
66eb6687 AM |
5371 | if (!bfd_hash_table_init_n (&aout_info.includes.root, |
5372 | aout_link_includes_newfunc, | |
5373 | sizeof (struct aout_link_includes_entry), | |
5374 | 251)) | |
116c20d2 NC |
5375 | goto error_return; |
5376 | includes_hash_initialized = TRUE; | |
252b5132 | 5377 | |
116c20d2 NC |
5378 | /* Figure out the largest section size. Also, if generating |
5379 | relocatable output, count the relocs. */ | |
5380 | trsize = 0; | |
5381 | drsize = 0; | |
5382 | max_contents_size = 0; | |
5383 | max_relocs_size = 0; | |
5384 | max_sym_count = 0; | |
c72f2fb2 | 5385 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 NC |
5386 | { |
5387 | bfd_size_type sz; | |
252b5132 | 5388 | |
0e1862bb | 5389 | if (bfd_link_relocatable (info)) |
116c20d2 NC |
5390 | { |
5391 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) | |
252b5132 | 5392 | { |
116c20d2 NC |
5393 | trsize += exec_hdr (sub)->a_trsize; |
5394 | drsize += exec_hdr (sub)->a_drsize; | |
252b5132 | 5395 | } |
252b5132 RH |
5396 | else |
5397 | { | |
116c20d2 NC |
5398 | /* FIXME: We need to identify the .text and .data sections |
5399 | and call get_reloc_upper_bound and canonicalize_reloc to | |
5400 | work out the number of relocs needed, and then multiply | |
5401 | by the reloc size. */ | |
4eca0228 | 5402 | _bfd_error_handler |
695344c0 | 5403 | /* xgettext:c-format */ |
871b3ab2 | 5404 | (_("%pB: relocatable link from %s to %s not supported"), |
dae82561 | 5405 | abfd, sub->xvec->name, abfd->xvec->name); |
116c20d2 NC |
5406 | bfd_set_error (bfd_error_invalid_operation); |
5407 | goto error_return; | |
252b5132 | 5408 | } |
116c20d2 | 5409 | } |
252b5132 | 5410 | |
116c20d2 NC |
5411 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
5412 | { | |
5413 | sz = obj_textsec (sub)->size; | |
5414 | if (sz > max_contents_size) | |
5415 | max_contents_size = sz; | |
5416 | sz = obj_datasec (sub)->size; | |
5417 | if (sz > max_contents_size) | |
5418 | max_contents_size = sz; | |
252b5132 | 5419 | |
116c20d2 NC |
5420 | sz = exec_hdr (sub)->a_trsize; |
5421 | if (sz > max_relocs_size) | |
5422 | max_relocs_size = sz; | |
5423 | sz = exec_hdr (sub)->a_drsize; | |
5424 | if (sz > max_relocs_size) | |
5425 | max_relocs_size = sz; | |
252b5132 | 5426 | |
116c20d2 NC |
5427 | sz = obj_aout_external_sym_count (sub); |
5428 | if (sz > max_sym_count) | |
5429 | max_sym_count = sz; | |
252b5132 RH |
5430 | } |
5431 | } | |
5432 | ||
0e1862bb | 5433 | if (bfd_link_relocatable (info)) |
116c20d2 NC |
5434 | { |
5435 | if (obj_textsec (abfd) != NULL) | |
5436 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
8423293d | 5437 | ->map_head.link_order) |
116c20d2 NC |
5438 | * obj_reloc_entry_size (abfd)); |
5439 | if (obj_datasec (abfd) != NULL) | |
5440 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
8423293d | 5441 | ->map_head.link_order) |
116c20d2 NC |
5442 | * obj_reloc_entry_size (abfd)); |
5443 | } | |
252b5132 | 5444 | |
116c20d2 NC |
5445 | exec_hdr (abfd)->a_trsize = trsize; |
5446 | exec_hdr (abfd)->a_drsize = drsize; | |
252b5132 | 5447 | |
116c20d2 | 5448 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); |
252b5132 | 5449 | |
116c20d2 NC |
5450 | /* Adjust the section sizes and vmas according to the magic number. |
5451 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
5452 | filepos for each section. */ | |
3a8c4a5b | 5453 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
116c20d2 | 5454 | goto error_return; |
252b5132 | 5455 | |
116c20d2 NC |
5456 | /* The relocation and symbol file positions differ among a.out |
5457 | targets. We are passed a callback routine from the backend | |
5458 | specific code to handle this. | |
5459 | FIXME: At this point we do not know how much space the symbol | |
5460 | table will require. This will not work for any (nonstandard) | |
5461 | a.out target that needs to know the symbol table size before it | |
dc12032b | 5462 | can compute the relocation file positions. */ |
116c20d2 NC |
5463 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, |
5464 | &aout_info.symoff); | |
5465 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
5466 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
5467 | obj_sym_filepos (abfd) = aout_info.symoff; | |
252b5132 | 5468 | |
116c20d2 NC |
5469 | /* We keep a count of the symbols as we output them. */ |
5470 | obj_aout_external_sym_count (abfd) = 0; | |
5471 | ||
5472 | /* We accumulate the string table as we write out the symbols. */ | |
5473 | aout_info.strtab = _bfd_stringtab_init (); | |
5474 | if (aout_info.strtab == NULL) | |
5475 | goto error_return; | |
5476 | ||
5477 | /* Allocate buffers to hold section contents and relocs. */ | |
a50b1753 | 5478 | aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size); |
116c20d2 | 5479 | aout_info.relocs = bfd_malloc (max_relocs_size); |
c38eb2a6 | 5480 | aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int)); |
a50b1753 NC |
5481 | aout_info.output_syms = (struct external_nlist *) |
5482 | bfd_malloc ((max_sym_count + 1) * sizeof (struct external_nlist)); | |
116c20d2 NC |
5483 | if ((aout_info.contents == NULL && max_contents_size != 0) |
5484 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
5485 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
5486 | || aout_info.output_syms == NULL) | |
5487 | goto error_return; | |
5488 | ||
5489 | /* If we have a symbol named __DYNAMIC, force it out now. This is | |
5490 | required by SunOS. Doing this here rather than in sunos.c is a | |
5491 | hack, but it's easier than exporting everything which would be | |
5492 | needed. */ | |
5493 | { | |
5494 | struct aout_link_hash_entry *h; | |
5495 | ||
5496 | h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", | |
5497 | FALSE, FALSE, FALSE); | |
5498 | if (h != NULL) | |
7686d77d | 5499 | aout_link_write_other_symbol (&h->root.root, &aout_info); |
116c20d2 NC |
5500 | } |
5501 | ||
5502 | /* The most time efficient way to do the link would be to read all | |
5503 | the input object files into memory and then sort out the | |
5504 | information into the output file. Unfortunately, that will | |
5505 | probably use too much memory. Another method would be to step | |
5506 | through everything that composes the text section and write it | |
5507 | out, and then everything that composes the data section and write | |
5508 | it out, and then write out the relocs, and then write out the | |
5509 | symbols. Unfortunately, that requires reading stuff from each | |
5510 | input file several times, and we will not be able to keep all the | |
5511 | input files open simultaneously, and reopening them will be slow. | |
5512 | ||
5513 | What we do is basically process one input file at a time. We do | |
5514 | everything we need to do with an input file once--copy over the | |
5515 | section contents, handle the relocation information, and write | |
5516 | out the symbols--and then we throw away the information we read | |
5517 | from it. This approach requires a lot of lseeks of the output | |
5518 | file, which is unfortunate but still faster than reopening a lot | |
5519 | of files. | |
5520 | ||
5521 | We use the output_has_begun field of the input BFDs to see | |
5522 | whether we have already handled it. */ | |
c72f2fb2 | 5523 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 | 5524 | sub->output_has_begun = FALSE; |
252b5132 | 5525 | |
116c20d2 NC |
5526 | /* Mark all sections which are to be included in the link. This |
5527 | will normally be every section. We need to do this so that we | |
5528 | can identify any sections which the linker has decided to not | |
5529 | include. */ | |
5530 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5531 | { |
8423293d | 5532 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
116c20d2 NC |
5533 | if (p->type == bfd_indirect_link_order) |
5534 | p->u.indirect.section->linker_mark = TRUE; | |
252b5132 RH |
5535 | } |
5536 | ||
116c20d2 NC |
5537 | have_link_order_relocs = FALSE; |
5538 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5539 | { |
8423293d | 5540 | for (p = o->map_head.link_order; |
116c20d2 NC |
5541 | p != NULL; |
5542 | p = p->next) | |
252b5132 | 5543 | { |
116c20d2 NC |
5544 | if (p->type == bfd_indirect_link_order |
5545 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
5546 | == bfd_target_aout_flavour)) | |
252b5132 | 5547 | { |
116c20d2 NC |
5548 | bfd *input_bfd; |
5549 | ||
5550 | input_bfd = p->u.indirect.section->owner; | |
5551 | if (! input_bfd->output_has_begun) | |
252b5132 | 5552 | { |
116c20d2 NC |
5553 | if (! aout_link_input_bfd (&aout_info, input_bfd)) |
5554 | goto error_return; | |
5555 | input_bfd->output_has_begun = TRUE; | |
252b5132 | 5556 | } |
252b5132 | 5557 | } |
116c20d2 NC |
5558 | else if (p->type == bfd_section_reloc_link_order |
5559 | || p->type == bfd_symbol_reloc_link_order) | |
5560 | { | |
5561 | /* These are handled below. */ | |
5562 | have_link_order_relocs = TRUE; | |
5563 | } | |
5564 | else | |
5565 | { | |
5566 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
5567 | goto error_return; | |
5568 | } | |
252b5132 RH |
5569 | } |
5570 | } | |
252b5132 | 5571 | |
116c20d2 | 5572 | /* Write out any symbols that we have not already written out. */ |
7686d77d AM |
5573 | bfd_hash_traverse (&info->hash->table, |
5574 | aout_link_write_other_symbol, | |
5575 | &aout_info); | |
116c20d2 NC |
5576 | |
5577 | /* Now handle any relocs we were asked to create by the linker. | |
5578 | These did not come from any input file. We must do these after | |
5579 | we have written out all the symbols, so that we know the symbol | |
5580 | indices to use. */ | |
5581 | if (have_link_order_relocs) | |
5582 | { | |
5583 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5584 | { |
8423293d | 5585 | for (p = o->map_head.link_order; |
116c20d2 NC |
5586 | p != NULL; |
5587 | p = p->next) | |
5588 | { | |
5589 | if (p->type == bfd_section_reloc_link_order | |
5590 | || p->type == bfd_symbol_reloc_link_order) | |
5591 | { | |
5592 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
5593 | goto error_return; | |
5594 | } | |
5595 | } | |
252b5132 | 5596 | } |
116c20d2 | 5597 | } |
252b5132 | 5598 | |
116c20d2 NC |
5599 | if (aout_info.contents != NULL) |
5600 | { | |
5601 | free (aout_info.contents); | |
5602 | aout_info.contents = NULL; | |
5603 | } | |
5604 | if (aout_info.relocs != NULL) | |
5605 | { | |
5606 | free (aout_info.relocs); | |
5607 | aout_info.relocs = NULL; | |
5608 | } | |
5609 | if (aout_info.symbol_map != NULL) | |
5610 | { | |
5611 | free (aout_info.symbol_map); | |
5612 | aout_info.symbol_map = NULL; | |
5613 | } | |
5614 | if (aout_info.output_syms != NULL) | |
5615 | { | |
5616 | free (aout_info.output_syms); | |
5617 | aout_info.output_syms = NULL; | |
5618 | } | |
5619 | if (includes_hash_initialized) | |
5620 | { | |
5621 | bfd_hash_table_free (&aout_info.includes.root); | |
5622 | includes_hash_initialized = FALSE; | |
5623 | } | |
252b5132 | 5624 | |
116c20d2 NC |
5625 | /* Finish up any dynamic linking we may be doing. */ |
5626 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
5627 | { | |
5628 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
5629 | goto error_return; | |
252b5132 RH |
5630 | } |
5631 | ||
116c20d2 NC |
5632 | /* Update the header information. */ |
5633 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
5634 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
5635 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
5636 | obj_textsec (abfd)->reloc_count = | |
5637 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
5638 | obj_datasec (abfd)->reloc_count = | |
5639 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
252b5132 | 5640 | |
116c20d2 | 5641 | /* Write out the string table, unless there are no symbols. */ |
f6e688f7 AM |
5642 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0) |
5643 | goto error_return; | |
116c20d2 NC |
5644 | if (abfd->symcount > 0) |
5645 | { | |
f6e688f7 | 5646 | if (!emit_stringtab (abfd, aout_info.strtab)) |
116c20d2 NC |
5647 | goto error_return; |
5648 | } | |
f6e688f7 | 5649 | else |
116c20d2 | 5650 | { |
f6e688f7 | 5651 | bfd_byte b[BYTES_IN_WORD]; |
252b5132 | 5652 | |
f6e688f7 AM |
5653 | memset (b, 0, BYTES_IN_WORD); |
5654 | if (bfd_bwrite (b, (bfd_size_type) BYTES_IN_WORD, abfd) != BYTES_IN_WORD) | |
116c20d2 NC |
5655 | goto error_return; |
5656 | } | |
252b5132 | 5657 | |
b34976b6 | 5658 | return TRUE; |
116c20d2 NC |
5659 | |
5660 | error_return: | |
5661 | if (aout_info.contents != NULL) | |
5662 | free (aout_info.contents); | |
5663 | if (aout_info.relocs != NULL) | |
5664 | free (aout_info.relocs); | |
5665 | if (aout_info.symbol_map != NULL) | |
5666 | free (aout_info.symbol_map); | |
5667 | if (aout_info.output_syms != NULL) | |
5668 | free (aout_info.output_syms); | |
5669 | if (includes_hash_initialized) | |
5670 | bfd_hash_table_free (&aout_info.includes.root); | |
5671 | return FALSE; | |
252b5132 | 5672 | } |