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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 | ||
455 | const bfd_target * | |
116c20d2 NC |
456 | NAME (aout, some_aout_object_p) (bfd *abfd, |
457 | struct internal_exec *execp, | |
458 | const bfd_target *(*callback_to_real_object_p) (bfd *)) | |
252b5132 RH |
459 | { |
460 | struct aout_data_struct *rawptr, *oldrawptr; | |
461 | const bfd_target *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 RH |
593 | |
594 | return abfd->xvec; | |
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; | |
894 | ||
895 | /* Text. */ | |
923f08ff AM |
896 | obj_textsec (abfd)->filepos = pos; |
897 | if (!obj_textsec (abfd)->user_set_vma) | |
898 | obj_textsec (abfd)->vma = vma; | |
252b5132 | 899 | else |
923f08ff | 900 | vma = obj_textsec (abfd)->vma; |
252b5132 | 901 | |
eea6121a AM |
902 | pos += obj_textsec (abfd)->size; |
903 | vma += obj_textsec (abfd)->size; | |
252b5132 RH |
904 | |
905 | /* Data. */ | |
923f08ff | 906 | if (!obj_datasec (abfd)->user_set_vma) |
252b5132 | 907 | { |
eea6121a | 908 | obj_textsec (abfd)->size += pad; |
252b5132 RH |
909 | pos += pad; |
910 | vma += pad; | |
923f08ff | 911 | obj_datasec (abfd)->vma = vma; |
252b5132 RH |
912 | } |
913 | else | |
923f08ff AM |
914 | vma = obj_datasec (abfd)->vma; |
915 | obj_datasec (abfd)->filepos = pos; | |
eea6121a AM |
916 | pos += obj_datasec (abfd)->size; |
917 | vma += obj_datasec (abfd)->size; | |
252b5132 RH |
918 | |
919 | /* BSS. */ | |
923f08ff | 920 | if (!obj_bsssec (abfd)->user_set_vma) |
252b5132 | 921 | { |
eea6121a | 922 | obj_datasec (abfd)->size += pad; |
252b5132 RH |
923 | pos += pad; |
924 | vma += pad; | |
923f08ff | 925 | obj_bsssec (abfd)->vma = vma; |
252b5132 RH |
926 | } |
927 | else | |
928 | { | |
08da05b0 | 929 | /* The VMA of the .bss section is set by the VMA of the |
07d6d2b8 AM |
930 | .data section plus the size of the .data section. We may |
931 | need to add padding bytes to make this true. */ | |
252b5132 RH |
932 | pad = obj_bsssec (abfd)->vma - vma; |
933 | if (pad > 0) | |
934 | { | |
eea6121a | 935 | obj_datasec (abfd)->size += pad; |
252b5132 RH |
936 | pos += pad; |
937 | } | |
938 | } | |
923f08ff | 939 | obj_bsssec (abfd)->filepos = pos; |
252b5132 RH |
940 | |
941 | /* Fix up the exec header. */ | |
eea6121a AM |
942 | execp->a_text = obj_textsec (abfd)->size; |
943 | execp->a_data = obj_datasec (abfd)->size; | |
944 | execp->a_bss = obj_bsssec (abfd)->size; | |
bbb1afc8 | 945 | N_SET_MAGIC (execp, OMAGIC); |
252b5132 RH |
946 | } |
947 | ||
948 | static void | |
116c20d2 | 949 | adjust_z_magic (bfd *abfd, struct internal_exec *execp) |
252b5132 RH |
950 | { |
951 | bfd_size_type data_pad, text_pad; | |
952 | file_ptr text_end; | |
dc810e39 | 953 | const struct aout_backend_data *abdp; |
116c20d2 NC |
954 | /* TRUE if text includes exec header. */ |
955 | bfd_boolean ztih; | |
0ef5a5bd | 956 | |
252b5132 RH |
957 | abdp = aout_backend_info (abfd); |
958 | ||
959 | /* Text. */ | |
960 | ztih = (abdp != NULL | |
961 | && (abdp->text_includes_header | |
962 | || obj_aout_subformat (abfd) == q_magic_format)); | |
923f08ff AM |
963 | obj_textsec (abfd)->filepos = (ztih |
964 | ? adata (abfd).exec_bytes_size | |
965 | : adata (abfd).zmagic_disk_block_size); | |
966 | if (! obj_textsec (abfd)->user_set_vma) | |
252b5132 RH |
967 | { |
968 | /* ?? Do we really need to check for relocs here? */ | |
923f08ff AM |
969 | obj_textsec (abfd)->vma = ((abfd->flags & HAS_RELOC) |
970 | ? 0 | |
971 | : (ztih | |
972 | ? (abdp->default_text_vma | |
973 | + adata (abfd).exec_bytes_size) | |
974 | : abdp->default_text_vma)); | |
252b5132 RH |
975 | text_pad = 0; |
976 | } | |
977 | else | |
978 | { | |
979 | /* The .text section is being loaded at an unusual address. We | |
07d6d2b8 AM |
980 | may need to pad it such that the .data section starts at a page |
981 | boundary. */ | |
252b5132 RH |
982 | if (ztih) |
983 | text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma) | |
984 | & (adata (abfd).page_size - 1)); | |
985 | else | |
986 | text_pad = ((- obj_textsec (abfd)->vma) | |
987 | & (adata (abfd).page_size - 1)); | |
988 | } | |
989 | ||
990 | /* Find start of data. */ | |
991 | if (ztih) | |
992 | { | |
eea6121a | 993 | text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->size; |
252b5132 RH |
994 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
995 | } | |
996 | else | |
997 | { | |
998 | /* Note that if page_size == zmagic_disk_block_size, then | |
999 | filepos == page_size, and this case is the same as the ztih | |
1000 | case. */ | |
eea6121a | 1001 | text_end = obj_textsec (abfd)->size; |
252b5132 RH |
1002 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
1003 | text_end += obj_textsec (abfd)->filepos; | |
1004 | } | |
eea6121a | 1005 | obj_textsec (abfd)->size += text_pad; |
252b5132 RH |
1006 | text_end += text_pad; |
1007 | ||
1008 | /* Data. */ | |
923f08ff | 1009 | if (!obj_datasec (abfd)->user_set_vma) |
252b5132 RH |
1010 | { |
1011 | bfd_vma vma; | |
eea6121a | 1012 | vma = obj_textsec (abfd)->vma + obj_textsec (abfd)->size; |
923f08ff | 1013 | obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size); |
252b5132 RH |
1014 | } |
1015 | if (abdp && abdp->zmagic_mapped_contiguous) | |
1016 | { | |
dee0a8f4 NC |
1017 | asection * text = obj_textsec (abfd); |
1018 | asection * data = obj_datasec (abfd); | |
1019 | ||
eea6121a | 1020 | text_pad = data->vma - (text->vma + text->size); |
dee0a8f4 NC |
1021 | /* Only pad the text section if the data |
1022 | section is going to be placed after it. */ | |
1023 | if (text_pad > 0) | |
eea6121a | 1024 | text->size += text_pad; |
252b5132 | 1025 | } |
923f08ff | 1026 | obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos |
eea6121a | 1027 | + obj_textsec (abfd)->size); |
0ef5a5bd | 1028 | |
252b5132 | 1029 | /* Fix up exec header while we're at it. */ |
eea6121a | 1030 | execp->a_text = obj_textsec (abfd)->size; |
252b5132 | 1031 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) |
923f08ff | 1032 | execp->a_text += adata (abfd).exec_bytes_size; |
252b5132 | 1033 | if (obj_aout_subformat (abfd) == q_magic_format) |
bbb1afc8 | 1034 | N_SET_MAGIC (execp, QMAGIC); |
252b5132 | 1035 | else |
bbb1afc8 | 1036 | N_SET_MAGIC (execp, ZMAGIC); |
252b5132 RH |
1037 | |
1038 | /* Spec says data section should be rounded up to page boundary. */ | |
eea6121a AM |
1039 | obj_datasec (abfd)->size |
1040 | = align_power (obj_datasec (abfd)->size, | |
923f08ff | 1041 | obj_bsssec (abfd)->alignment_power); |
eea6121a | 1042 | execp->a_data = BFD_ALIGN (obj_datasec (abfd)->size, |
923f08ff | 1043 | adata (abfd).page_size); |
eea6121a | 1044 | data_pad = execp->a_data - obj_datasec (abfd)->size; |
252b5132 RH |
1045 | |
1046 | /* BSS. */ | |
923f08ff AM |
1047 | if (!obj_bsssec (abfd)->user_set_vma) |
1048 | obj_bsssec (abfd)->vma = (obj_datasec (abfd)->vma | |
eea6121a | 1049 | + obj_datasec (abfd)->size); |
252b5132 RH |
1050 | /* If the BSS immediately follows the data section and extra space |
1051 | in the page is left after the data section, fudge data | |
1052 | in the header so that the bss section looks smaller by that | |
1053 | amount. We'll start the bss section there, and lie to the OS. | |
1054 | (Note that a linker script, as well as the above assignment, | |
1055 | could have explicitly set the BSS vma to immediately follow | |
1056 | the data section.) */ | |
923f08ff | 1057 | if (align_power (obj_bsssec (abfd)->vma, obj_bsssec (abfd)->alignment_power) |
eea6121a AM |
1058 | == obj_datasec (abfd)->vma + obj_datasec (abfd)->size) |
1059 | execp->a_bss = (data_pad > obj_bsssec (abfd)->size | |
1060 | ? 0 : obj_bsssec (abfd)->size - data_pad); | |
252b5132 | 1061 | else |
eea6121a | 1062 | execp->a_bss = obj_bsssec (abfd)->size; |
252b5132 RH |
1063 | } |
1064 | ||
1065 | static void | |
116c20d2 | 1066 | adjust_n_magic (bfd *abfd, struct internal_exec *execp) |
252b5132 | 1067 | { |
923f08ff | 1068 | file_ptr pos = adata (abfd).exec_bytes_size; |
252b5132 RH |
1069 | bfd_vma vma = 0; |
1070 | int pad; | |
0ef5a5bd | 1071 | |
252b5132 | 1072 | /* Text. */ |
923f08ff AM |
1073 | obj_textsec (abfd)->filepos = pos; |
1074 | if (!obj_textsec (abfd)->user_set_vma) | |
1075 | obj_textsec (abfd)->vma = vma; | |
252b5132 | 1076 | else |
923f08ff | 1077 | vma = obj_textsec (abfd)->vma; |
eea6121a AM |
1078 | pos += obj_textsec (abfd)->size; |
1079 | vma += obj_textsec (abfd)->size; | |
252b5132 RH |
1080 | |
1081 | /* Data. */ | |
923f08ff AM |
1082 | obj_datasec (abfd)->filepos = pos; |
1083 | if (!obj_datasec (abfd)->user_set_vma) | |
1084 | obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size); | |
1085 | vma = obj_datasec (abfd)->vma; | |
0ef5a5bd | 1086 | |
252b5132 | 1087 | /* Since BSS follows data immediately, see if it needs alignment. */ |
eea6121a | 1088 | vma += obj_datasec (abfd)->size; |
923f08ff | 1089 | pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma; |
eea6121a AM |
1090 | obj_datasec (abfd)->size += pad; |
1091 | pos += obj_datasec (abfd)->size; | |
252b5132 RH |
1092 | |
1093 | /* BSS. */ | |
923f08ff AM |
1094 | if (!obj_bsssec (abfd)->user_set_vma) |
1095 | obj_bsssec (abfd)->vma = vma; | |
252b5132 | 1096 | else |
923f08ff | 1097 | vma = obj_bsssec (abfd)->vma; |
252b5132 RH |
1098 | |
1099 | /* Fix up exec header. */ | |
eea6121a AM |
1100 | execp->a_text = obj_textsec (abfd)->size; |
1101 | execp->a_data = obj_datasec (abfd)->size; | |
1102 | execp->a_bss = obj_bsssec (abfd)->size; | |
bbb1afc8 | 1103 | N_SET_MAGIC (execp, NMAGIC); |
252b5132 RH |
1104 | } |
1105 | ||
b34976b6 | 1106 | bfd_boolean |
3a8c4a5b | 1107 | NAME (aout, adjust_sizes_and_vmas) (bfd *abfd) |
252b5132 RH |
1108 | { |
1109 | struct internal_exec *execp = exec_hdr (abfd); | |
1110 | ||
116c20d2 | 1111 | if (! NAME (aout, make_sections) (abfd)) |
b34976b6 | 1112 | return FALSE; |
252b5132 | 1113 | |
923f08ff | 1114 | if (adata (abfd).magic != undecided_magic) |
b34976b6 | 1115 | return TRUE; |
252b5132 | 1116 | |
eea6121a AM |
1117 | obj_textsec (abfd)->size = |
1118 | align_power (obj_textsec (abfd)->size, | |
923f08ff | 1119 | obj_textsec (abfd)->alignment_power); |
252b5132 | 1120 | |
252b5132 RH |
1121 | /* Rule (heuristic) for when to pad to a new page. Note that there |
1122 | are (at least) two ways demand-paged (ZMAGIC) files have been | |
1123 | handled. Most Berkeley-based systems start the text segment at | |
1124 | (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text | |
1125 | segment right after the exec header; the latter is counted in the | |
1126 | text segment size, and is paged in by the kernel with the rest of | |
0ef5a5bd | 1127 | the text. */ |
252b5132 RH |
1128 | |
1129 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1130 | to understand enough to implement it. Better would probably be to go | |
1131 | right from BFD flags to alignment/positioning characteristics. But the | |
1132 | old code was sloppy enough about handling the flags, and had enough | |
1133 | other magic, that it was a little hard for me to understand. I think | |
1134 | I understand it better now, but I haven't time to do the cleanup this | |
1135 | minute. */ | |
1136 | ||
1137 | if (abfd->flags & D_PAGED) | |
1138 | /* Whether or not WP_TEXT is set -- let D_PAGED override. */ | |
923f08ff | 1139 | adata (abfd).magic = z_magic; |
252b5132 | 1140 | else if (abfd->flags & WP_TEXT) |
923f08ff | 1141 | adata (abfd).magic = n_magic; |
252b5132 | 1142 | else |
923f08ff | 1143 | adata (abfd).magic = o_magic; |
252b5132 RH |
1144 | |
1145 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1146 | #if __GNUC__ >= 2 | |
1147 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1148 | ({ char *str; | |
923f08ff AM |
1149 | switch (adata (abfd).magic) |
1150 | { | |
1151 | case n_magic: str = "NMAGIC"; break; | |
1152 | case o_magic: str = "OMAGIC"; break; | |
1153 | case z_magic: str = "ZMAGIC"; break; | |
1154 | default: abort (); | |
1155 | } | |
252b5132 RH |
1156 | str; |
1157 | }), | |
eea6121a | 1158 | obj_textsec (abfd)->vma, obj_textsec (abfd)->size, |
07d6d2b8 | 1159 | obj_textsec (abfd)->alignment_power, |
eea6121a | 1160 | obj_datasec (abfd)->vma, obj_datasec (abfd)->size, |
07d6d2b8 | 1161 | obj_datasec (abfd)->alignment_power, |
eea6121a | 1162 | obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size, |
07d6d2b8 | 1163 | obj_bsssec (abfd)->alignment_power); |
252b5132 RH |
1164 | #endif |
1165 | #endif | |
1166 | ||
923f08ff | 1167 | switch (adata (abfd).magic) |
252b5132 RH |
1168 | { |
1169 | case o_magic: | |
1170 | adjust_o_magic (abfd, execp); | |
1171 | break; | |
1172 | case z_magic: | |
1173 | adjust_z_magic (abfd, execp); | |
1174 | break; | |
1175 | case n_magic: | |
1176 | adjust_n_magic (abfd, execp); | |
1177 | break; | |
1178 | default: | |
1179 | abort (); | |
1180 | } | |
1181 | ||
1182 | #ifdef BFD_AOUT_DEBUG | |
1183 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
eea6121a | 1184 | obj_textsec (abfd)->vma, obj_textsec (abfd)->size, |
07d6d2b8 | 1185 | obj_textsec (abfd)->filepos, |
eea6121a | 1186 | obj_datasec (abfd)->vma, obj_datasec (abfd)->size, |
07d6d2b8 | 1187 | obj_datasec (abfd)->filepos, |
eea6121a | 1188 | obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size); |
252b5132 RH |
1189 | #endif |
1190 | ||
b34976b6 | 1191 | return TRUE; |
252b5132 RH |
1192 | } |
1193 | ||
1194 | /* | |
1195 | FUNCTION | |
1196 | aout_@var{size}_new_section_hook | |
1197 | ||
1198 | SYNOPSIS | |
07d6d2b8 | 1199 | bfd_boolean aout_@var{size}_new_section_hook, |
252b5132 | 1200 | (bfd *abfd, |
116c20d2 | 1201 | asection *newsect); |
252b5132 RH |
1202 | |
1203 | DESCRIPTION | |
1204 | Called by the BFD in response to a @code{bfd_make_section} | |
1205 | request. | |
1206 | */ | |
b34976b6 | 1207 | bfd_boolean |
116c20d2 | 1208 | NAME (aout, new_section_hook) (bfd *abfd, asection *newsect) |
252b5132 | 1209 | { |
f7c33884 | 1210 | /* Align to double at least. */ |
923f08ff | 1211 | newsect->alignment_power = bfd_get_arch_info (abfd)->section_align_power; |
252b5132 | 1212 | |
252b5132 | 1213 | if (bfd_get_format (abfd) == bfd_object) |
f7c33884 NC |
1214 | { |
1215 | if (obj_textsec (abfd) == NULL && !strcmp (newsect->name, ".text")) | |
1216 | { | |
1217 | obj_textsec (abfd)= newsect; | |
1218 | newsect->target_index = N_TEXT; | |
f7c33884 | 1219 | } |
f592407e | 1220 | else if (obj_datasec (abfd) == NULL && !strcmp (newsect->name, ".data")) |
f7c33884 NC |
1221 | { |
1222 | obj_datasec (abfd) = newsect; | |
1223 | newsect->target_index = N_DATA; | |
f7c33884 | 1224 | } |
f592407e | 1225 | else if (obj_bsssec (abfd) == NULL && !strcmp (newsect->name, ".bss")) |
f7c33884 NC |
1226 | { |
1227 | obj_bsssec (abfd) = newsect; | |
1228 | newsect->target_index = N_BSS; | |
f7c33884 NC |
1229 | } |
1230 | } | |
252b5132 | 1231 | |
f7c33884 | 1232 | /* We allow more than three sections internally. */ |
f592407e | 1233 | return _bfd_generic_new_section_hook (abfd, newsect); |
252b5132 RH |
1234 | } |
1235 | ||
b34976b6 | 1236 | bfd_boolean |
116c20d2 NC |
1237 | NAME (aout, set_section_contents) (bfd *abfd, |
1238 | sec_ptr section, | |
1239 | const void * location, | |
1240 | file_ptr offset, | |
1241 | bfd_size_type count) | |
252b5132 | 1242 | { |
252b5132 RH |
1243 | if (! abfd->output_has_begun) |
1244 | { | |
3a8c4a5b | 1245 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
b34976b6 | 1246 | return FALSE; |
252b5132 RH |
1247 | } |
1248 | ||
1249 | if (section == obj_bsssec (abfd)) | |
1250 | { | |
1251 | bfd_set_error (bfd_error_no_contents); | |
b34976b6 | 1252 | return FALSE; |
252b5132 RH |
1253 | } |
1254 | ||
1255 | if (section != obj_textsec (abfd) | |
1256 | && section != obj_datasec (abfd)) | |
1257 | { | |
e6af3a53 NC |
1258 | if (aout_section_merge_with_text_p (abfd, section)) |
1259 | section->filepos = obj_textsec (abfd)->filepos + | |
1260 | (section->vma - obj_textsec (abfd)->vma); | |
1261 | else | |
1262 | { | |
4eca0228 | 1263 | _bfd_error_handler |
695344c0 | 1264 | /* xgettext:c-format */ |
871b3ab2 | 1265 | (_("%pB: can not represent section `%pA' in a.out object file format"), |
dae82561 | 1266 | abfd, section); |
07d6d2b8 AM |
1267 | bfd_set_error (bfd_error_nonrepresentable_section); |
1268 | return FALSE; | |
e6af3a53 | 1269 | } |
252b5132 RH |
1270 | } |
1271 | ||
1272 | if (count != 0) | |
1273 | { | |
1274 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 | |
dc810e39 | 1275 | || bfd_bwrite (location, count, abfd) != count) |
b34976b6 | 1276 | return FALSE; |
252b5132 RH |
1277 | } |
1278 | ||
b34976b6 | 1279 | return TRUE; |
252b5132 RH |
1280 | } |
1281 | \f | |
1282 | /* Read the external symbols from an a.out file. */ | |
1283 | ||
b34976b6 | 1284 | static bfd_boolean |
116c20d2 | 1285 | aout_get_external_symbols (bfd *abfd) |
252b5132 | 1286 | { |
116c20d2 | 1287 | if (obj_aout_external_syms (abfd) == NULL) |
252b5132 RH |
1288 | { |
1289 | bfd_size_type count; | |
1290 | struct external_nlist *syms; | |
7c53fd1c | 1291 | bfd_size_type amt = exec_hdr (abfd)->a_syms; |
252b5132 | 1292 | |
7c53fd1c | 1293 | count = amt / EXTERNAL_NLIST_SIZE; |
6b8f0fd5 MS |
1294 | if (count == 0) |
1295 | return TRUE; /* Nothing to do. */ | |
252b5132 RH |
1296 | |
1297 | #ifdef USE_MMAP | |
7c53fd1c | 1298 | if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), amt, |
b34976b6 AM |
1299 | &obj_aout_sym_window (abfd), TRUE)) |
1300 | return FALSE; | |
252b5132 RH |
1301 | syms = (struct external_nlist *) obj_aout_sym_window (abfd).data; |
1302 | #else | |
1303 | /* We allocate using malloc to make the values easy to free | |
1304 | later on. If we put them on the objalloc it might not be | |
1305 | possible to free them. */ | |
2bb3687b AM |
1306 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0) |
1307 | return FALSE; | |
1308 | syms = (struct external_nlist *) _bfd_malloc_and_read (abfd, amt, amt); | |
6b8f0fd5 | 1309 | if (syms == NULL) |
b34976b6 | 1310 | return FALSE; |
252b5132 RH |
1311 | #endif |
1312 | ||
1313 | obj_aout_external_syms (abfd) = syms; | |
1314 | obj_aout_external_sym_count (abfd) = count; | |
1315 | } | |
0ef5a5bd | 1316 | |
252b5132 RH |
1317 | if (obj_aout_external_strings (abfd) == NULL |
1318 | && exec_hdr (abfd)->a_syms != 0) | |
1319 | { | |
1320 | unsigned char string_chars[BYTES_IN_WORD]; | |
1321 | bfd_size_type stringsize; | |
1322 | char *strings; | |
dc810e39 | 1323 | bfd_size_type amt = BYTES_IN_WORD; |
252b5132 RH |
1324 | |
1325 | /* Get the size of the strings. */ | |
1326 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
116c20d2 | 1327 | || bfd_bread ((void *) string_chars, amt, abfd) != amt) |
b34976b6 | 1328 | return FALSE; |
252b5132 | 1329 | stringsize = GET_WORD (abfd, string_chars); |
0301ce14 AM |
1330 | if (stringsize == 0) |
1331 | stringsize = 1; | |
1332 | else if (stringsize < BYTES_IN_WORD | |
1333 | || (size_t) stringsize != stringsize) | |
1334 | { | |
1335 | bfd_set_error (bfd_error_bad_value); | |
1336 | return FALSE; | |
1337 | } | |
252b5132 RH |
1338 | |
1339 | #ifdef USE_MMAP | |
0301ce14 | 1340 | if (stringsize >= BYTES_IN_WORD) |
252b5132 | 1341 | { |
bf82069d | 1342 | if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize + 1, |
0301ce14 AM |
1343 | &obj_aout_string_window (abfd), TRUE)) |
1344 | return FALSE; | |
1345 | strings = (char *) obj_aout_string_window (abfd).data; | |
252b5132 | 1346 | } |
0301ce14 | 1347 | else |
252b5132 | 1348 | #endif |
0301ce14 | 1349 | { |
bf82069d | 1350 | strings = (char *) bfd_malloc (stringsize + 1); |
0301ce14 AM |
1351 | if (strings == NULL) |
1352 | return FALSE; | |
1353 | ||
1354 | if (stringsize >= BYTES_IN_WORD) | |
1355 | { | |
1356 | /* Keep the string count in the buffer for convenience | |
1357 | when indexing with e_strx. */ | |
1358 | amt = stringsize - BYTES_IN_WORD; | |
1359 | if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt) | |
1360 | { | |
1361 | free (strings); | |
1362 | return FALSE; | |
1363 | } | |
1364 | } | |
1365 | } | |
252b5132 RH |
1366 | /* Ensure that a zero index yields an empty string. */ |
1367 | strings[0] = '\0'; | |
1368 | ||
bf82069d NC |
1369 | /* Ensure that the string buffer is NUL terminated. */ |
1370 | strings[stringsize] = 0; | |
252b5132 RH |
1371 | |
1372 | obj_aout_external_strings (abfd) = strings; | |
1373 | obj_aout_external_string_size (abfd) = stringsize; | |
1374 | } | |
1375 | ||
b34976b6 | 1376 | return TRUE; |
252b5132 RH |
1377 | } |
1378 | ||
1379 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type | |
1380 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1381 | nlist structure. This function is responsible for setting | |
1382 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
1383 | ||
b34976b6 | 1384 | static bfd_boolean |
116c20d2 | 1385 | translate_from_native_sym_flags (bfd *abfd, aout_symbol_type *cache_ptr) |
252b5132 RH |
1386 | { |
1387 | flagword visible; | |
1388 | ||
1389 | if ((cache_ptr->type & N_STAB) != 0 | |
1390 | || cache_ptr->type == N_FN) | |
1391 | { | |
1392 | asection *sec; | |
1393 | ||
1394 | /* This is a debugging symbol. */ | |
252b5132 RH |
1395 | cache_ptr->symbol.flags = BSF_DEBUGGING; |
1396 | ||
1397 | /* Work out the symbol section. */ | |
1398 | switch (cache_ptr->type & N_TYPE) | |
1399 | { | |
1400 | case N_TEXT: | |
1401 | case N_FN: | |
1402 | sec = obj_textsec (abfd); | |
1403 | break; | |
1404 | case N_DATA: | |
1405 | sec = obj_datasec (abfd); | |
1406 | break; | |
1407 | case N_BSS: | |
1408 | sec = obj_bsssec (abfd); | |
1409 | break; | |
1410 | default: | |
1411 | case N_ABS: | |
1412 | sec = bfd_abs_section_ptr; | |
1413 | break; | |
1414 | } | |
1415 | ||
1416 | cache_ptr->symbol.section = sec; | |
1417 | cache_ptr->symbol.value -= sec->vma; | |
1418 | ||
b34976b6 | 1419 | return TRUE; |
252b5132 RH |
1420 | } |
1421 | ||
1422 | /* Get the default visibility. This does not apply to all types, so | |
1423 | we just hold it in a local variable to use if wanted. */ | |
1424 | if ((cache_ptr->type & N_EXT) == 0) | |
1425 | visible = BSF_LOCAL; | |
1426 | else | |
1427 | visible = BSF_GLOBAL; | |
1428 | ||
1429 | switch (cache_ptr->type) | |
1430 | { | |
1431 | default: | |
1432 | case N_ABS: case N_ABS | N_EXT: | |
1433 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1434 | cache_ptr->symbol.flags = visible; | |
1435 | break; | |
1436 | ||
1437 | case N_UNDF | N_EXT: | |
1438 | if (cache_ptr->symbol.value != 0) | |
1439 | { | |
1440 | /* This is a common symbol. */ | |
1441 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
1442 | cache_ptr->symbol.section = bfd_com_section_ptr; | |
1443 | } | |
1444 | else | |
1445 | { | |
1446 | cache_ptr->symbol.flags = 0; | |
1447 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1448 | } | |
1449 | break; | |
1450 | ||
1451 | case N_TEXT: case N_TEXT | N_EXT: | |
1452 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1453 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1454 | cache_ptr->symbol.flags = visible; | |
1455 | break; | |
1456 | ||
1457 | /* N_SETV symbols used to represent set vectors placed in the | |
1458 | data section. They are no longer generated. Theoretically, | |
1459 | it was possible to extract the entries and combine them with | |
1460 | new ones, although I don't know if that was ever actually | |
1461 | done. Unless that feature is restored, treat them as data | |
1462 | symbols. */ | |
1463 | case N_SETV: case N_SETV | N_EXT: | |
1464 | case N_DATA: case N_DATA | N_EXT: | |
1465 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1466 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1467 | cache_ptr->symbol.flags = visible; | |
1468 | break; | |
1469 | ||
1470 | case N_BSS: case N_BSS | N_EXT: | |
1471 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1472 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1473 | cache_ptr->symbol.flags = visible; | |
1474 | break; | |
1475 | ||
1476 | case N_SETA: case N_SETA | N_EXT: | |
1477 | case N_SETT: case N_SETT | N_EXT: | |
1478 | case N_SETD: case N_SETD | N_EXT: | |
1479 | case N_SETB: case N_SETB | N_EXT: | |
1480 | { | |
1481 | /* This code is no longer needed. It used to be used to make | |
07d6d2b8 AM |
1482 | the linker handle set symbols, but they are now handled in |
1483 | the add_symbols routine instead. */ | |
252b5132 RH |
1484 | switch (cache_ptr->type & N_TYPE) |
1485 | { | |
1486 | case N_SETA: | |
1487 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1488 | break; | |
1489 | case N_SETT: | |
1490 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1491 | break; | |
1492 | case N_SETD: | |
1493 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1494 | break; | |
1495 | case N_SETB: | |
1496 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1497 | break; | |
1498 | } | |
1499 | ||
1500 | cache_ptr->symbol.flags |= BSF_CONSTRUCTOR; | |
1501 | } | |
1502 | break; | |
1503 | ||
1504 | case N_WARNING: | |
1505 | /* This symbol is the text of a warning message. The next | |
1506 | symbol is the symbol to associate the warning with. If a | |
1507 | reference is made to that symbol, a warning is issued. */ | |
1508 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
1509 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1510 | break; | |
1511 | ||
1512 | case N_INDR: case N_INDR | N_EXT: | |
1513 | /* An indirect symbol. This consists of two symbols in a row. | |
1514 | The first symbol is the name of the indirection. The second | |
1515 | symbol is the name of the target. A reference to the first | |
1516 | symbol becomes a reference to the second. */ | |
1517 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible; | |
1518 | cache_ptr->symbol.section = bfd_ind_section_ptr; | |
1519 | break; | |
1520 | ||
1521 | case N_WEAKU: | |
1522 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1523 | cache_ptr->symbol.flags = BSF_WEAK; | |
1524 | break; | |
1525 | ||
1526 | case N_WEAKA: | |
1527 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1528 | cache_ptr->symbol.flags = BSF_WEAK; | |
1529 | break; | |
1530 | ||
1531 | case N_WEAKT: | |
1532 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1533 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1534 | cache_ptr->symbol.flags = BSF_WEAK; | |
1535 | break; | |
1536 | ||
1537 | case N_WEAKD: | |
1538 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1539 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1540 | cache_ptr->symbol.flags = BSF_WEAK; | |
1541 | break; | |
1542 | ||
1543 | case N_WEAKB: | |
1544 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1545 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1546 | cache_ptr->symbol.flags = BSF_WEAK; | |
1547 | break; | |
1548 | } | |
1549 | ||
b34976b6 | 1550 | return TRUE; |
252b5132 RH |
1551 | } |
1552 | ||
1553 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ | |
1554 | ||
b34976b6 | 1555 | static bfd_boolean |
116c20d2 NC |
1556 | translate_to_native_sym_flags (bfd *abfd, |
1557 | asymbol *cache_ptr, | |
1558 | struct external_nlist *sym_pointer) | |
252b5132 RH |
1559 | { |
1560 | bfd_vma value = cache_ptr->value; | |
1561 | asection *sec; | |
1562 | bfd_vma off; | |
1563 | ||
1564 | /* Mask out any existing type bits in case copying from one section | |
1565 | to another. */ | |
1566 | sym_pointer->e_type[0] &= ~N_TYPE; | |
1567 | ||
e6f7f6d1 | 1568 | sec = bfd_asymbol_section (cache_ptr); |
252b5132 RH |
1569 | off = 0; |
1570 | ||
1571 | if (sec == NULL) | |
1572 | { | |
1573 | /* This case occurs, e.g., for the *DEBUG* section of a COFF | |
1574 | file. */ | |
4eca0228 | 1575 | _bfd_error_handler |
695344c0 | 1576 | /* xgettext:c-format */ |
871b3ab2 | 1577 | (_("%pB: can not represent section for symbol `%s' in a.out " |
4eca0228 | 1578 | "object file format"), |
dae82561 | 1579 | abfd, |
252b5132 RH |
1580 | cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*")); |
1581 | bfd_set_error (bfd_error_nonrepresentable_section); | |
b34976b6 | 1582 | return FALSE; |
252b5132 RH |
1583 | } |
1584 | ||
1585 | if (sec->output_section != NULL) | |
1586 | { | |
1587 | off = sec->output_offset; | |
1588 | sec = sec->output_section; | |
1589 | } | |
1590 | ||
1591 | if (bfd_is_abs_section (sec)) | |
1592 | sym_pointer->e_type[0] |= N_ABS; | |
1593 | else if (sec == obj_textsec (abfd)) | |
1594 | sym_pointer->e_type[0] |= N_TEXT; | |
1595 | else if (sec == obj_datasec (abfd)) | |
1596 | sym_pointer->e_type[0] |= N_DATA; | |
1597 | else if (sec == obj_bsssec (abfd)) | |
1598 | sym_pointer->e_type[0] |= N_BSS; | |
1599 | else if (bfd_is_und_section (sec)) | |
1600 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1601 | else if (bfd_is_ind_section (sec)) | |
1602 | sym_pointer->e_type[0] = N_INDR; | |
1603 | else if (bfd_is_com_section (sec)) | |
1604 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1605 | else | |
1606 | { | |
e6af3a53 NC |
1607 | if (aout_section_merge_with_text_p (abfd, sec)) |
1608 | sym_pointer->e_type[0] |= N_TEXT; | |
1609 | else | |
1610 | { | |
4eca0228 | 1611 | _bfd_error_handler |
695344c0 | 1612 | /* xgettext:c-format */ |
871b3ab2 | 1613 | (_("%pB: can not represent section `%pA' in a.out object file format"), |
dae82561 | 1614 | abfd, sec); |
07d6d2b8 AM |
1615 | bfd_set_error (bfd_error_nonrepresentable_section); |
1616 | return FALSE; | |
e6af3a53 | 1617 | } |
252b5132 RH |
1618 | } |
1619 | ||
f7c33884 | 1620 | /* Turn the symbol from section relative to absolute again. */ |
252b5132 RH |
1621 | value += sec->vma + off; |
1622 | ||
1623 | if ((cache_ptr->flags & BSF_WARNING) != 0) | |
1624 | sym_pointer->e_type[0] = N_WARNING; | |
1625 | ||
1626 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) | |
1627 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1628 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
1629 | sym_pointer->e_type[0] |= N_EXT; | |
930d924d L |
1630 | else if ((cache_ptr->flags & BSF_LOCAL) != 0) |
1631 | sym_pointer->e_type[0] &= ~N_EXT; | |
252b5132 RH |
1632 | |
1633 | if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0) | |
1634 | { | |
1635 | int type = ((aout_symbol_type *) cache_ptr)->type; | |
f7c33884 | 1636 | |
252b5132 RH |
1637 | switch (type) |
1638 | { | |
1639 | case N_ABS: type = N_SETA; break; | |
1640 | case N_TEXT: type = N_SETT; break; | |
1641 | case N_DATA: type = N_SETD; break; | |
1642 | case N_BSS: type = N_SETB; break; | |
1643 | } | |
1644 | sym_pointer->e_type[0] = type; | |
1645 | } | |
1646 | ||
1647 | if ((cache_ptr->flags & BSF_WEAK) != 0) | |
1648 | { | |
1649 | int type; | |
1650 | ||
1651 | switch (sym_pointer->e_type[0] & N_TYPE) | |
1652 | { | |
1653 | default: | |
1654 | case N_ABS: type = N_WEAKA; break; | |
1655 | case N_TEXT: type = N_WEAKT; break; | |
1656 | case N_DATA: type = N_WEAKD; break; | |
1657 | case N_BSS: type = N_WEAKB; break; | |
1658 | case N_UNDF: type = N_WEAKU; break; | |
1659 | } | |
1660 | sym_pointer->e_type[0] = type; | |
1661 | } | |
1662 | ||
923f08ff | 1663 | PUT_WORD (abfd, value, sym_pointer->e_value); |
252b5132 | 1664 | |
b34976b6 | 1665 | return TRUE; |
252b5132 RH |
1666 | } |
1667 | \f | |
0ef5a5bd | 1668 | /* Native-level interface to symbols. */ |
252b5132 RH |
1669 | |
1670 | asymbol * | |
116c20d2 | 1671 | NAME (aout, make_empty_symbol) (bfd *abfd) |
252b5132 | 1672 | { |
986f0783 | 1673 | size_t amt = sizeof (aout_symbol_type); |
116c20d2 | 1674 | |
d3ce72d0 NC |
1675 | aout_symbol_type *new_symbol = (aout_symbol_type *) bfd_zalloc (abfd, amt); |
1676 | if (!new_symbol) | |
252b5132 | 1677 | return NULL; |
d3ce72d0 | 1678 | new_symbol->symbol.the_bfd = abfd; |
252b5132 | 1679 | |
d3ce72d0 | 1680 | return &new_symbol->symbol; |
252b5132 RH |
1681 | } |
1682 | ||
1683 | /* Translate a set of internal symbols into external symbols. */ | |
1684 | ||
b34976b6 | 1685 | bfd_boolean |
116c20d2 NC |
1686 | NAME (aout, translate_symbol_table) (bfd *abfd, |
1687 | aout_symbol_type *in, | |
1688 | struct external_nlist *ext, | |
1689 | bfd_size_type count, | |
1690 | char *str, | |
1691 | bfd_size_type strsize, | |
1692 | bfd_boolean dynamic) | |
252b5132 RH |
1693 | { |
1694 | struct external_nlist *ext_end; | |
1695 | ||
1696 | ext_end = ext + count; | |
1697 | for (; ext < ext_end; ext++, in++) | |
1698 | { | |
1699 | bfd_vma x; | |
1700 | ||
1701 | x = GET_WORD (abfd, ext->e_strx); | |
1702 | in->symbol.the_bfd = abfd; | |
1703 | ||
1704 | /* For the normal symbols, the zero index points at the number | |
1705 | of bytes in the string table but is to be interpreted as the | |
1706 | null string. For the dynamic symbols, the number of bytes in | |
1707 | the string table is stored in the __DYNAMIC structure and the | |
1708 | zero index points at an actual string. */ | |
1709 | if (x == 0 && ! dynamic) | |
1710 | in->symbol.name = ""; | |
1711 | else if (x < strsize) | |
1712 | in->symbol.name = str + x; | |
1713 | else | |
0d329c0a AM |
1714 | { |
1715 | _bfd_error_handler | |
1716 | (_("%pB: invalid string offset %" PRIu64 " >= %" PRIu64), | |
1717 | abfd, (uint64_t) x, (uint64_t) strsize); | |
1718 | bfd_set_error (bfd_error_bad_value); | |
1719 | return FALSE; | |
1720 | } | |
252b5132 RH |
1721 | |
1722 | in->symbol.value = GET_SWORD (abfd, ext->e_value); | |
dc810e39 AM |
1723 | in->desc = H_GET_16 (abfd, ext->e_desc); |
1724 | in->other = H_GET_8 (abfd, ext->e_other); | |
1725 | in->type = H_GET_8 (abfd, ext->e_type); | |
252b5132 RH |
1726 | in->symbol.udata.p = NULL; |
1727 | ||
1728 | if (! translate_from_native_sym_flags (abfd, in)) | |
b34976b6 | 1729 | return FALSE; |
252b5132 RH |
1730 | |
1731 | if (dynamic) | |
1732 | in->symbol.flags |= BSF_DYNAMIC; | |
1733 | } | |
1734 | ||
b34976b6 | 1735 | return TRUE; |
252b5132 RH |
1736 | } |
1737 | ||
1738 | /* We read the symbols into a buffer, which is discarded when this | |
1739 | function exits. We read the strings into a buffer large enough to | |
0ef5a5bd | 1740 | hold them all plus all the cached symbol entries. */ |
252b5132 | 1741 | |
b34976b6 | 1742 | bfd_boolean |
116c20d2 | 1743 | NAME (aout, slurp_symbol_table) (bfd *abfd) |
252b5132 RH |
1744 | { |
1745 | struct external_nlist *old_external_syms; | |
1746 | aout_symbol_type *cached; | |
dc810e39 | 1747 | bfd_size_type cached_size; |
252b5132 | 1748 | |
f7c33884 | 1749 | /* If there's no work to be done, don't do any. */ |
116c20d2 | 1750 | if (obj_aout_symbols (abfd) != NULL) |
b34976b6 | 1751 | return TRUE; |
252b5132 RH |
1752 | |
1753 | old_external_syms = obj_aout_external_syms (abfd); | |
1754 | ||
1755 | if (! aout_get_external_symbols (abfd)) | |
b34976b6 | 1756 | return FALSE; |
252b5132 | 1757 | |
dc810e39 | 1758 | cached_size = obj_aout_external_sym_count (abfd); |
87b32780 MS |
1759 | if (cached_size == 0) |
1760 | return TRUE; /* Nothing to do. */ | |
1761 | ||
dc810e39 | 1762 | cached_size *= sizeof (aout_symbol_type); |
a50b1753 | 1763 | cached = (aout_symbol_type *) bfd_zmalloc (cached_size); |
87b32780 | 1764 | if (cached == NULL) |
b34976b6 | 1765 | return FALSE; |
252b5132 RH |
1766 | |
1767 | /* Convert from external symbol information to internal. */ | |
116c20d2 | 1768 | if (! (NAME (aout, translate_symbol_table) |
252b5132 RH |
1769 | (abfd, cached, |
1770 | obj_aout_external_syms (abfd), | |
1771 | obj_aout_external_sym_count (abfd), | |
1772 | obj_aout_external_strings (abfd), | |
1773 | obj_aout_external_string_size (abfd), | |
b34976b6 | 1774 | FALSE))) |
252b5132 RH |
1775 | { |
1776 | free (cached); | |
b34976b6 | 1777 | return FALSE; |
252b5132 RH |
1778 | } |
1779 | ||
ed48ec2e | 1780 | abfd->symcount = obj_aout_external_sym_count (abfd); |
252b5132 RH |
1781 | |
1782 | obj_aout_symbols (abfd) = cached; | |
1783 | ||
1784 | /* It is very likely that anybody who calls this function will not | |
1785 | want the external symbol information, so if it was allocated | |
1786 | because of our call to aout_get_external_symbols, we free it up | |
1787 | right away to save space. */ | |
116c20d2 NC |
1788 | if (old_external_syms == NULL |
1789 | && obj_aout_external_syms (abfd) != NULL) | |
252b5132 RH |
1790 | { |
1791 | #ifdef USE_MMAP | |
1792 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
1793 | #else | |
1794 | free (obj_aout_external_syms (abfd)); | |
1795 | #endif | |
1796 | obj_aout_external_syms (abfd) = NULL; | |
1797 | } | |
1798 | ||
b34976b6 | 1799 | return TRUE; |
252b5132 RH |
1800 | } |
1801 | \f | |
1802 | /* We use a hash table when writing out symbols so that we only write | |
1803 | out a particular string once. This helps particularly when the | |
1804 | linker writes out stabs debugging entries, because each different | |
1805 | contributing object file tends to have many duplicate stabs | |
1806 | strings. | |
1807 | ||
1808 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it | |
1809 | if BFD_TRADITIONAL_FORMAT is set. */ | |
1810 | ||
252b5132 RH |
1811 | /* Get the index of a string in a strtab, adding it if it is not |
1812 | already present. */ | |
1813 | ||
116c20d2 NC |
1814 | static inline bfd_size_type |
1815 | add_to_stringtab (bfd *abfd, | |
1816 | struct bfd_strtab_hash *tab, | |
1817 | const char *str, | |
1818 | bfd_boolean copy) | |
252b5132 | 1819 | { |
b34976b6 | 1820 | bfd_boolean hash; |
91d6fa6a | 1821 | bfd_size_type str_index; |
252b5132 RH |
1822 | |
1823 | /* An index of 0 always means the empty string. */ | |
1824 | if (str == 0 || *str == '\0') | |
1825 | return 0; | |
1826 | ||
1827 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx | |
1828 | doesn't understand a hashed string table. */ | |
b34976b6 | 1829 | hash = TRUE; |
252b5132 | 1830 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
b34976b6 | 1831 | hash = FALSE; |
252b5132 | 1832 | |
91d6fa6a | 1833 | str_index = _bfd_stringtab_add (tab, str, hash, copy); |
252b5132 | 1834 | |
91d6fa6a | 1835 | if (str_index != (bfd_size_type) -1) |
116c20d2 NC |
1836 | /* Add BYTES_IN_WORD to the return value to account for the |
1837 | space taken up by the string table size. */ | |
91d6fa6a | 1838 | str_index += BYTES_IN_WORD; |
252b5132 | 1839 | |
91d6fa6a | 1840 | return str_index; |
252b5132 RH |
1841 | } |
1842 | ||
1843 | /* Write out a strtab. ABFD is already at the right location in the | |
1844 | file. */ | |
1845 | ||
b34976b6 | 1846 | static bfd_boolean |
116c20d2 | 1847 | emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab) |
252b5132 RH |
1848 | { |
1849 | bfd_byte buffer[BYTES_IN_WORD]; | |
986f0783 | 1850 | size_t amt = BYTES_IN_WORD; |
252b5132 RH |
1851 | |
1852 | /* The string table starts with the size. */ | |
1853 | PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer); | |
116c20d2 | 1854 | if (bfd_bwrite ((void *) buffer, amt, abfd) != amt) |
b34976b6 | 1855 | return FALSE; |
252b5132 RH |
1856 | |
1857 | return _bfd_stringtab_emit (abfd, tab); | |
1858 | } | |
1859 | \f | |
b34976b6 | 1860 | bfd_boolean |
116c20d2 | 1861 | NAME (aout, write_syms) (bfd *abfd) |
252b5132 RH |
1862 | { |
1863 | unsigned int count ; | |
1864 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1865 | struct bfd_strtab_hash *strtab; | |
1866 | ||
1867 | strtab = _bfd_stringtab_init (); | |
1868 | if (strtab == NULL) | |
b34976b6 | 1869 | return FALSE; |
252b5132 RH |
1870 | |
1871 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1872 | { | |
1873 | asymbol *g = generic[count]; | |
1874 | bfd_size_type indx; | |
1875 | struct external_nlist nsp; | |
986f0783 | 1876 | size_t amt; |
252b5132 | 1877 | |
b34976b6 | 1878 | indx = add_to_stringtab (abfd, strtab, g->name, FALSE); |
252b5132 RH |
1879 | if (indx == (bfd_size_type) -1) |
1880 | goto error_return; | |
1881 | PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx); | |
1882 | ||
923f08ff | 1883 | if (bfd_asymbol_flavour (g) == abfd->xvec->flavour) |
252b5132 | 1884 | { |
923f08ff AM |
1885 | H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc); |
1886 | H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other); | |
1887 | H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type); | |
252b5132 RH |
1888 | } |
1889 | else | |
1890 | { | |
dc810e39 AM |
1891 | H_PUT_16 (abfd, 0, nsp.e_desc); |
1892 | H_PUT_8 (abfd, 0, nsp.e_other); | |
1893 | H_PUT_8 (abfd, 0, nsp.e_type); | |
252b5132 RH |
1894 | } |
1895 | ||
1896 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) | |
1897 | goto error_return; | |
1898 | ||
dc810e39 | 1899 | amt = EXTERNAL_NLIST_SIZE; |
116c20d2 | 1900 | if (bfd_bwrite ((void *) &nsp, amt, abfd) != amt) |
252b5132 RH |
1901 | goto error_return; |
1902 | ||
1903 | /* NB: `KEEPIT' currently overlays `udata.p', so set this only | |
1904 | here, at the end. */ | |
1905 | g->KEEPIT = count; | |
1906 | } | |
1907 | ||
1908 | if (! emit_stringtab (abfd, strtab)) | |
1909 | goto error_return; | |
1910 | ||
1911 | _bfd_stringtab_free (strtab); | |
1912 | ||
b34976b6 | 1913 | return TRUE; |
252b5132 RH |
1914 | |
1915 | error_return: | |
1916 | _bfd_stringtab_free (strtab); | |
b34976b6 | 1917 | return FALSE; |
252b5132 | 1918 | } |
252b5132 RH |
1919 | \f |
1920 | long | |
116c20d2 | 1921 | NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location) |
252b5132 | 1922 | { |
116c20d2 NC |
1923 | unsigned int counter = 0; |
1924 | aout_symbol_type *symbase; | |
252b5132 | 1925 | |
116c20d2 NC |
1926 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
1927 | return -1; | |
252b5132 | 1928 | |
116c20d2 NC |
1929 | for (symbase = obj_aout_symbols (abfd); |
1930 | counter++ < bfd_get_symcount (abfd); | |
1931 | ) | |
1932 | *(location++) = (asymbol *) (symbase++); | |
1933 | *location++ =0; | |
1934 | return bfd_get_symcount (abfd); | |
252b5132 | 1935 | } |
252b5132 | 1936 | \f |
f7c33884 | 1937 | /* Standard reloc stuff. */ |
0ef5a5bd | 1938 | /* Output standard relocation information to a file in target byte order. */ |
252b5132 | 1939 | |
116c20d2 NC |
1940 | extern void NAME (aout, swap_std_reloc_out) |
1941 | (bfd *, arelent *, struct reloc_std_external *); | |
252b5132 RH |
1942 | |
1943 | void | |
116c20d2 NC |
1944 | NAME (aout, swap_std_reloc_out) (bfd *abfd, |
1945 | arelent *g, | |
1946 | struct reloc_std_external *natptr) | |
252b5132 RH |
1947 | { |
1948 | int r_index; | |
1949 | asymbol *sym = *(g->sym_ptr_ptr); | |
1950 | int r_extern; | |
1951 | unsigned int r_length; | |
1952 | int r_pcrel; | |
1953 | int r_baserel, r_jmptable, r_relative; | |
1954 | asection *output_section = sym->section->output_section; | |
1955 | ||
923f08ff | 1956 | PUT_WORD (abfd, g->address, natptr->r_address); |
252b5132 | 1957 | |
e2996cc3 | 1958 | BFD_ASSERT (g->howto != NULL); |
f7c33884 NC |
1959 | r_length = g->howto->size ; /* Size as a power of two. */ |
1960 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
252b5132 RH |
1961 | /* XXX This relies on relocs coming from a.out files. */ |
1962 | r_baserel = (g->howto->type & 8) != 0; | |
1963 | r_jmptable = (g->howto->type & 16) != 0; | |
1964 | r_relative = (g->howto->type & 32) != 0; | |
1965 | ||
f7c33884 | 1966 | /* Name was clobbered by aout_write_syms to be symbol index. */ |
252b5132 RH |
1967 | |
1968 | /* If this relocation is relative to a symbol then set the | |
1969 | r_index to the symbols index, and the r_extern bit. | |
1970 | ||
1971 | Absolute symbols can come in in two ways, either as an offset | |
1972 | from the abs section, or as a symbol which has an abs value. | |
f7c33884 | 1973 | check for that here. */ |
252b5132 | 1974 | |
252b5132 RH |
1975 | if (bfd_is_com_section (output_section) |
1976 | || bfd_is_abs_section (output_section) | |
22184a77 NC |
1977 | || bfd_is_und_section (output_section) |
1978 | /* PR gas/3041 a.out relocs against weak symbols | |
1979 | must be treated as if they were against externs. */ | |
1980 | || (sym->flags & BSF_WEAK)) | |
252b5132 RH |
1981 | { |
1982 | if (bfd_abs_section_ptr->symbol == sym) | |
f7c33884 NC |
1983 | { |
1984 | /* Whoops, looked like an abs symbol, but is | |
1985 | really an offset from the abs section. */ | |
1986 | r_index = N_ABS; | |
1987 | r_extern = 0; | |
1988 | } | |
252b5132 | 1989 | else |
f7c33884 NC |
1990 | { |
1991 | /* Fill in symbol. */ | |
1992 | r_extern = 1; | |
1993 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
1994 | } | |
252b5132 RH |
1995 | } |
1996 | else | |
1997 | { | |
f7c33884 | 1998 | /* Just an ordinary section. */ |
252b5132 RH |
1999 | r_extern = 0; |
2000 | r_index = output_section->target_index; | |
2001 | } | |
2002 | ||
f7c33884 | 2003 | /* Now the fun stuff. */ |
923f08ff AM |
2004 | if (bfd_header_big_endian (abfd)) |
2005 | { | |
252b5132 RH |
2006 | natptr->r_index[0] = r_index >> 16; |
2007 | natptr->r_index[1] = r_index >> 8; | |
2008 | natptr->r_index[2] = r_index; | |
923f08ff AM |
2009 | natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) |
2010 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
2011 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
2012 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
2013 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
2014 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
2015 | } | |
2016 | else | |
2017 | { | |
2018 | natptr->r_index[2] = r_index >> 16; | |
2019 | natptr->r_index[1] = r_index >> 8; | |
2020 | natptr->r_index[0] = r_index; | |
2021 | natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
2022 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
2023 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
2024 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
2025 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
2026 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
2027 | } | |
252b5132 RH |
2028 | } |
2029 | ||
f7c33884 | 2030 | /* Extended stuff. */ |
0ef5a5bd | 2031 | /* Output extended relocation information to a file in target byte order. */ |
252b5132 | 2032 | |
116c20d2 NC |
2033 | extern void NAME (aout, swap_ext_reloc_out) |
2034 | (bfd *, arelent *, struct reloc_ext_external *); | |
252b5132 RH |
2035 | |
2036 | void | |
116c20d2 NC |
2037 | NAME (aout, swap_ext_reloc_out) (bfd *abfd, |
2038 | arelent *g, | |
2039 | struct reloc_ext_external *natptr) | |
252b5132 RH |
2040 | { |
2041 | int r_index; | |
2042 | int r_extern; | |
2043 | unsigned int r_type; | |
dc810e39 | 2044 | bfd_vma r_addend; |
252b5132 RH |
2045 | asymbol *sym = *(g->sym_ptr_ptr); |
2046 | asection *output_section = sym->section->output_section; | |
2047 | ||
2048 | PUT_WORD (abfd, g->address, natptr->r_address); | |
2049 | ||
2050 | r_type = (unsigned int) g->howto->type; | |
2051 | ||
2052 | r_addend = g->addend; | |
2053 | if ((sym->flags & BSF_SECTION_SYM) != 0) | |
2054 | r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma; | |
2055 | ||
2056 | /* If this relocation is relative to a symbol then set the | |
2057 | r_index to the symbols index, and the r_extern bit. | |
2058 | ||
2059 | Absolute symbols can come in in two ways, either as an offset | |
2060 | from the abs section, or as a symbol which has an abs value. | |
2061 | check for that here. */ | |
e6f7f6d1 | 2062 | if (bfd_is_abs_section (bfd_asymbol_section (sym))) |
252b5132 RH |
2063 | { |
2064 | r_extern = 0; | |
2065 | r_index = N_ABS; | |
2066 | } | |
2067 | else if ((sym->flags & BSF_SECTION_SYM) == 0) | |
2068 | { | |
e6f7f6d1 | 2069 | if (bfd_is_und_section (bfd_asymbol_section (sym)) |
252b5132 RH |
2070 | || (sym->flags & BSF_GLOBAL) != 0) |
2071 | r_extern = 1; | |
2072 | else | |
2073 | r_extern = 0; | |
2074 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
2075 | } | |
2076 | else | |
2077 | { | |
f7c33884 | 2078 | /* Just an ordinary section. */ |
252b5132 RH |
2079 | r_extern = 0; |
2080 | r_index = output_section->target_index; | |
2081 | } | |
2082 | ||
f7c33884 | 2083 | /* Now the fun stuff. */ |
923f08ff AM |
2084 | if (bfd_header_big_endian (abfd)) |
2085 | { | |
2086 | natptr->r_index[0] = r_index >> 16; | |
2087 | natptr->r_index[1] = r_index >> 8; | |
2088 | natptr->r_index[2] = r_index; | |
2089 | natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
2090 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
2091 | } | |
2092 | else | |
2093 | { | |
2094 | natptr->r_index[2] = r_index >> 16; | |
2095 | natptr->r_index[1] = r_index >> 8; | |
2096 | natptr->r_index[0] = r_index; | |
2097 | natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
2098 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE)); | |
2099 | } | |
252b5132 RH |
2100 | |
2101 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
2102 | } | |
2103 | ||
2104 | /* BFD deals internally with all things based from the section they're | |
2105 | in. so, something in 10 bytes into a text section with a base of | |
2106 | 50 would have a symbol (.text+10) and know .text vma was 50. | |
2107 | ||
2108 | Aout keeps all it's symbols based from zero, so the symbol would | |
2109 | contain 60. This macro subs the base of each section from the value | |
923f08ff AM |
2110 | to give the true offset from the section. */ |
2111 | ||
2112 | #define MOVE_ADDRESS(ad) \ | |
2113 | if (r_extern) \ | |
2114 | { \ | |
2115 | /* Undefined symbol. */ \ | |
2116 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
252b5132 | 2117 | cache_ptr->addend = ad; \ |
252b5132 | 2118 | } \ |
923f08ff AM |
2119 | else \ |
2120 | { \ | |
2121 | /* Defined, section relative. Replace symbol with pointer to \ | |
2122 | symbol which points to section. */ \ | |
2123 | switch (r_index) \ | |
2124 | { \ | |
2125 | case N_TEXT: \ | |
2126 | case N_TEXT | N_EXT: \ | |
2127 | cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \ | |
2128 | cache_ptr->addend = ad - su->textsec->vma; \ | |
2129 | break; \ | |
2130 | case N_DATA: \ | |
2131 | case N_DATA | N_EXT: \ | |
2132 | cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \ | |
2133 | cache_ptr->addend = ad - su->datasec->vma; \ | |
2134 | break; \ | |
2135 | case N_BSS: \ | |
2136 | case N_BSS | N_EXT: \ | |
2137 | cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \ | |
2138 | cache_ptr->addend = ad - su->bsssec->vma; \ | |
2139 | break; \ | |
2140 | default: \ | |
2141 | case N_ABS: \ | |
2142 | case N_ABS | N_EXT: \ | |
2143 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ | |
2144 | cache_ptr->addend = ad; \ | |
2145 | break; \ | |
2146 | } \ | |
2147 | } | |
252b5132 RH |
2148 | |
2149 | void | |
116c20d2 NC |
2150 | NAME (aout, swap_ext_reloc_in) (bfd *abfd, |
2151 | struct reloc_ext_external *bytes, | |
2152 | arelent *cache_ptr, | |
2153 | asymbol **symbols, | |
2154 | bfd_size_type symcount) | |
252b5132 RH |
2155 | { |
2156 | unsigned int r_index; | |
2157 | int r_extern; | |
2158 | unsigned int r_type; | |
2159 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2160 | ||
2161 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
2162 | ||
f7c33884 | 2163 | /* Now the fun stuff. */ |
923f08ff AM |
2164 | if (bfd_header_big_endian (abfd)) |
2165 | { | |
d45913a0 DA |
2166 | r_index = (((unsigned int) bytes->r_index[0] << 16) |
2167 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2168 | | bytes->r_index[2]); |
2169 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
2170 | r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
2171 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
2172 | } | |
2173 | else | |
2174 | { | |
d45913a0 DA |
2175 | r_index = (((unsigned int) bytes->r_index[2] << 16) |
2176 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2177 | | bytes->r_index[0]); |
2178 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
2179 | r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
2180 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
2181 | } | |
252b5132 | 2182 | |
ad756e3f AM |
2183 | if (r_type < TABLE_SIZE (howto_table_ext)) |
2184 | cache_ptr->howto = howto_table_ext + r_type; | |
2185 | else | |
2186 | cache_ptr->howto = NULL; | |
252b5132 RH |
2187 | |
2188 | /* Base relative relocs are always against the symbol table, | |
2189 | regardless of the setting of r_extern. r_extern just reflects | |
2190 | whether the symbol the reloc is against is local or global. */ | |
d45913a0 DA |
2191 | if (r_type == (unsigned int) RELOC_BASE10 |
2192 | || r_type == (unsigned int) RELOC_BASE13 | |
2193 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
2194 | r_extern = 1; |
2195 | ||
2196 | if (r_extern && r_index > symcount) | |
2197 | { | |
2198 | /* We could arrange to return an error, but it might be useful | |
07d6d2b8 | 2199 | to see the file even if it is bad. */ |
252b5132 RH |
2200 | r_extern = 0; |
2201 | r_index = N_ABS; | |
2202 | } | |
2203 | ||
923f08ff | 2204 | MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend)); |
252b5132 RH |
2205 | } |
2206 | ||
2207 | void | |
116c20d2 NC |
2208 | NAME (aout, swap_std_reloc_in) (bfd *abfd, |
2209 | struct reloc_std_external *bytes, | |
2210 | arelent *cache_ptr, | |
2211 | asymbol **symbols, | |
2212 | bfd_size_type symcount) | |
252b5132 RH |
2213 | { |
2214 | unsigned int r_index; | |
2215 | int r_extern; | |
2216 | unsigned int r_length; | |
2217 | int r_pcrel; | |
2218 | int r_baserel, r_jmptable, r_relative; | |
2219 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2220 | unsigned int howto_idx; | |
2221 | ||
dc810e39 | 2222 | cache_ptr->address = H_GET_32 (abfd, bytes->r_address); |
252b5132 | 2223 | |
f7c33884 | 2224 | /* Now the fun stuff. */ |
923f08ff AM |
2225 | if (bfd_header_big_endian (abfd)) |
2226 | { | |
d45913a0 DA |
2227 | r_index = (((unsigned int) bytes->r_index[0] << 16) |
2228 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2229 | | bytes->r_index[2]); |
2230 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
2231 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
2232 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
2233 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
2234 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
2235 | r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
2236 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
2237 | } | |
2238 | else | |
2239 | { | |
d45913a0 DA |
2240 | r_index = (((unsigned int) bytes->r_index[2] << 16) |
2241 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2242 | | bytes->r_index[0]); |
2243 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
2244 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
2245 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
2246 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
2247 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
2248 | r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
2249 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
2250 | } | |
252b5132 | 2251 | |
923f08ff AM |
2252 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel |
2253 | + 16 * r_jmptable + 32 * r_relative); | |
ad756e3f AM |
2254 | if (howto_idx < TABLE_SIZE (howto_table_std)) |
2255 | { | |
2256 | cache_ptr->howto = howto_table_std + howto_idx; | |
2257 | if (cache_ptr->howto->type == (unsigned int) -1) | |
2258 | cache_ptr->howto = NULL; | |
2259 | } | |
2260 | else | |
2261 | cache_ptr->howto = NULL; | |
252b5132 RH |
2262 | |
2263 | /* Base relative relocs are always against the symbol table, | |
2264 | regardless of the setting of r_extern. r_extern just reflects | |
2265 | whether the symbol the reloc is against is local or global. */ | |
2266 | if (r_baserel) | |
2267 | r_extern = 1; | |
2268 | ||
116acb2c | 2269 | if (r_extern && r_index >= symcount) |
252b5132 RH |
2270 | { |
2271 | /* We could arrange to return an error, but it might be useful | |
116acb2c AM |
2272 | to see the file even if it is bad. FIXME: Of course this |
2273 | means that objdump -r *doesn't* see the actual reloc, and | |
2274 | objcopy silently writes a different reloc. */ | |
252b5132 RH |
2275 | r_extern = 0; |
2276 | r_index = N_ABS; | |
2277 | } | |
2278 | ||
923f08ff | 2279 | MOVE_ADDRESS (0); |
252b5132 RH |
2280 | } |
2281 | ||
2282 | /* Read and swap the relocs for a section. */ | |
2283 | ||
b34976b6 | 2284 | bfd_boolean |
116c20d2 | 2285 | NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols) |
252b5132 | 2286 | { |
dc810e39 | 2287 | bfd_size_type count; |
252b5132 | 2288 | bfd_size_type reloc_size; |
116c20d2 | 2289 | void * relocs; |
252b5132 RH |
2290 | arelent *reloc_cache; |
2291 | size_t each_size; | |
2292 | unsigned int counter = 0; | |
2293 | arelent *cache_ptr; | |
dc810e39 | 2294 | bfd_size_type amt; |
252b5132 RH |
2295 | |
2296 | if (asect->relocation) | |
b34976b6 | 2297 | return TRUE; |
252b5132 RH |
2298 | |
2299 | if (asect->flags & SEC_CONSTRUCTOR) | |
b34976b6 | 2300 | return TRUE; |
252b5132 RH |
2301 | |
2302 | if (asect == obj_datasec (abfd)) | |
923f08ff | 2303 | reloc_size = exec_hdr (abfd)->a_drsize; |
252b5132 | 2304 | else if (asect == obj_textsec (abfd)) |
923f08ff | 2305 | reloc_size = exec_hdr (abfd)->a_trsize; |
252b5132 RH |
2306 | else if (asect == obj_bsssec (abfd)) |
2307 | reloc_size = 0; | |
2308 | else | |
2309 | { | |
2310 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 2311 | return FALSE; |
252b5132 RH |
2312 | } |
2313 | ||
252b5132 | 2314 | each_size = obj_reloc_entry_size (abfd); |
252b5132 | 2315 | count = reloc_size / each_size; |
078c4bfc MS |
2316 | if (count == 0) |
2317 | return TRUE; /* Nothing to be done. */ | |
252b5132 | 2318 | |
806470a2 | 2319 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) |
b34976b6 | 2320 | return FALSE; |
2bb3687b | 2321 | relocs = _bfd_malloc_and_read (abfd, reloc_size, reloc_size); |
078c4bfc | 2322 | if (relocs == NULL) |
806470a2 AM |
2323 | return FALSE; |
2324 | ||
806470a2 AM |
2325 | amt = count * sizeof (arelent); |
2326 | reloc_cache = (arelent *) bfd_zmalloc (amt); | |
2327 | if (reloc_cache == NULL) | |
252b5132 RH |
2328 | { |
2329 | free (relocs); | |
b34976b6 | 2330 | return FALSE; |
252b5132 RH |
2331 | } |
2332 | ||
2333 | cache_ptr = reloc_cache; | |
2334 | if (each_size == RELOC_EXT_SIZE) | |
2335 | { | |
dc810e39 | 2336 | struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; |
252b5132 RH |
2337 | |
2338 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
1642229e | 2339 | MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols, |
dc810e39 | 2340 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
2341 | } |
2342 | else | |
2343 | { | |
dc810e39 | 2344 | struct reloc_std_external *rptr = (struct reloc_std_external *) relocs; |
252b5132 RH |
2345 | |
2346 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
2347 | MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols, | |
dc810e39 | 2348 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
2349 | } |
2350 | ||
2351 | free (relocs); | |
2352 | ||
2353 | asect->relocation = reloc_cache; | |
2354 | asect->reloc_count = cache_ptr - reloc_cache; | |
2355 | ||
b34976b6 | 2356 | return TRUE; |
252b5132 RH |
2357 | } |
2358 | ||
2359 | /* Write out a relocation section into an object file. */ | |
2360 | ||
b34976b6 | 2361 | bfd_boolean |
116c20d2 | 2362 | NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section) |
252b5132 RH |
2363 | { |
2364 | arelent **generic; | |
2365 | unsigned char *native, *natptr; | |
2366 | size_t each_size; | |
2367 | ||
2368 | unsigned int count = section->reloc_count; | |
dc810e39 | 2369 | bfd_size_type natsize; |
252b5132 RH |
2370 | |
2371 | if (count == 0 || section->orelocation == NULL) | |
b34976b6 | 2372 | return TRUE; |
252b5132 RH |
2373 | |
2374 | each_size = obj_reloc_entry_size (abfd); | |
dc810e39 | 2375 | natsize = (bfd_size_type) each_size * count; |
a50b1753 | 2376 | native = (unsigned char *) bfd_zalloc (abfd, natsize); |
252b5132 | 2377 | if (!native) |
b34976b6 | 2378 | return FALSE; |
252b5132 RH |
2379 | |
2380 | generic = section->orelocation; | |
2381 | ||
2382 | if (each_size == RELOC_EXT_SIZE) | |
2383 | { | |
2384 | for (natptr = native; | |
2385 | count != 0; | |
2386 | --count, natptr += each_size, ++generic) | |
e2996cc3 | 2387 | { |
92744f05 NC |
2388 | /* PR 20921: If the howto field has not been initialised then skip |
2389 | this reloc. | |
2390 | PR 20929: Similarly for the symbol field. */ | |
2391 | if ((*generic)->howto == NULL | |
2392 | || (*generic)->sym_ptr_ptr == NULL) | |
e2996cc3 NC |
2393 | { |
2394 | bfd_set_error (bfd_error_invalid_operation); | |
92744f05 | 2395 | _bfd_error_handler (_("\ |
871b3ab2 | 2396 | %pB: attempt to write out unknown reloc type"), abfd); |
e2996cc3 NC |
2397 | return FALSE; |
2398 | } | |
2399 | MY_swap_ext_reloc_out (abfd, *generic, | |
2400 | (struct reloc_ext_external *) natptr); | |
2401 | } | |
252b5132 RH |
2402 | } |
2403 | else | |
2404 | { | |
2405 | for (natptr = native; | |
2406 | count != 0; | |
2407 | --count, natptr += each_size, ++generic) | |
e2996cc3 | 2408 | { |
92744f05 NC |
2409 | if ((*generic)->howto == NULL |
2410 | || (*generic)->sym_ptr_ptr == NULL) | |
e2996cc3 NC |
2411 | { |
2412 | bfd_set_error (bfd_error_invalid_operation); | |
92744f05 | 2413 | _bfd_error_handler (_("\ |
871b3ab2 | 2414 | %pB: attempt to write out unknown reloc type"), abfd); |
e2996cc3 NC |
2415 | return FALSE; |
2416 | } | |
2417 | MY_swap_std_reloc_out (abfd, *generic, | |
2418 | (struct reloc_std_external *) natptr); | |
2419 | } | |
252b5132 RH |
2420 | } |
2421 | ||
116c20d2 | 2422 | if (bfd_bwrite ((void *) native, natsize, abfd) != natsize) |
dc810e39 | 2423 | { |
923f08ff | 2424 | bfd_release (abfd, native); |
b34976b6 | 2425 | return FALSE; |
dc810e39 | 2426 | } |
252b5132 RH |
2427 | bfd_release (abfd, native); |
2428 | ||
b34976b6 | 2429 | return TRUE; |
252b5132 RH |
2430 | } |
2431 | ||
f7c33884 NC |
2432 | /* This is stupid. This function should be a boolean predicate. */ |
2433 | ||
252b5132 | 2434 | long |
116c20d2 NC |
2435 | NAME (aout, canonicalize_reloc) (bfd *abfd, |
2436 | sec_ptr section, | |
2437 | arelent **relptr, | |
2438 | asymbol **symbols) | |
252b5132 RH |
2439 | { |
2440 | arelent *tblptr = section->relocation; | |
2441 | unsigned int count; | |
2442 | ||
2443 | if (section == obj_bsssec (abfd)) | |
2444 | { | |
2445 | *relptr = NULL; | |
2446 | return 0; | |
2447 | } | |
2448 | ||
116c20d2 | 2449 | if (!(tblptr || NAME (aout, slurp_reloc_table) (abfd, section, symbols))) |
252b5132 RH |
2450 | return -1; |
2451 | ||
923f08ff AM |
2452 | if (section->flags & SEC_CONSTRUCTOR) |
2453 | { | |
2454 | arelent_chain *chain = section->constructor_chain; | |
2455 | for (count = 0; count < section->reloc_count; count ++) | |
2456 | { | |
2457 | *relptr ++ = &chain->relent; | |
2458 | chain = chain->next; | |
2459 | } | |
252b5132 | 2460 | } |
923f08ff AM |
2461 | else |
2462 | { | |
2463 | tblptr = section->relocation; | |
252b5132 | 2464 | |
923f08ff AM |
2465 | for (count = 0; count++ < section->reloc_count; ) |
2466 | { | |
2467 | *relptr++ = tblptr++; | |
2468 | } | |
2469 | } | |
252b5132 RH |
2470 | *relptr = 0; |
2471 | ||
2472 | return section->reloc_count; | |
2473 | } | |
2474 | ||
2475 | long | |
116c20d2 | 2476 | NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect) |
252b5132 | 2477 | { |
3a551c7a AM |
2478 | bfd_size_type count; |
2479 | ||
923f08ff AM |
2480 | if (bfd_get_format (abfd) != bfd_object) |
2481 | { | |
2482 | bfd_set_error (bfd_error_invalid_operation); | |
2483 | return -1; | |
2484 | } | |
f7c33884 | 2485 | |
923f08ff | 2486 | if (asect->flags & SEC_CONSTRUCTOR) |
3a551c7a AM |
2487 | count = asect->reloc_count; |
2488 | else if (asect == obj_datasec (abfd)) | |
2489 | count = exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
2490 | else if (asect == obj_textsec (abfd)) | |
2491 | count = exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
2492 | else if (asect == obj_bsssec (abfd)) | |
2493 | count = 0; | |
2494 | else | |
2495 | { | |
2496 | bfd_set_error (bfd_error_invalid_operation); | |
2497 | return -1; | |
2498 | } | |
252b5132 | 2499 | |
3a551c7a AM |
2500 | if (count >= LONG_MAX / sizeof (arelent *)) |
2501 | { | |
2502 | bfd_set_error (bfd_error_file_too_big); | |
2503 | return -1; | |
2504 | } | |
2505 | return (count + 1) * sizeof (arelent *); | |
252b5132 | 2506 | } |
252b5132 RH |
2507 | \f |
2508 | long | |
116c20d2 | 2509 | NAME (aout, get_symtab_upper_bound) (bfd *abfd) |
252b5132 | 2510 | { |
116c20d2 | 2511 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
252b5132 RH |
2512 | return -1; |
2513 | ||
2514 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
2515 | } | |
2516 | ||
1725a96e | 2517 | alent * |
116c20d2 NC |
2518 | NAME (aout, get_lineno) (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
2519 | asymbol *ignore_symbol ATTRIBUTE_UNUSED) | |
252b5132 | 2520 | { |
116c20d2 | 2521 | return NULL; |
252b5132 RH |
2522 | } |
2523 | ||
252b5132 | 2524 | void |
116c20d2 NC |
2525 | NAME (aout, get_symbol_info) (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
2526 | asymbol *symbol, | |
2527 | symbol_info *ret) | |
252b5132 RH |
2528 | { |
2529 | bfd_symbol_info (symbol, ret); | |
2530 | ||
2531 | if (ret->type == '?') | |
2532 | { | |
923f08ff | 2533 | int type_code = aout_symbol (symbol)->type & 0xff; |
252b5132 RH |
2534 | const char *stab_name = bfd_get_stab_name (type_code); |
2535 | static char buf[10]; | |
2536 | ||
2537 | if (stab_name == NULL) | |
2538 | { | |
e60b52c6 | 2539 | sprintf (buf, "(%d)", type_code); |
252b5132 RH |
2540 | stab_name = buf; |
2541 | } | |
2542 | ret->type = '-'; | |
2543 | ret->stab_type = type_code; | |
923f08ff AM |
2544 | ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff); |
2545 | ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff); | |
252b5132 RH |
2546 | ret->stab_name = stab_name; |
2547 | } | |
2548 | } | |
2549 | ||
252b5132 | 2550 | void |
116c20d2 NC |
2551 | NAME (aout, print_symbol) (bfd *abfd, |
2552 | void * afile, | |
2553 | asymbol *symbol, | |
2554 | bfd_print_symbol_type how) | |
252b5132 RH |
2555 | { |
2556 | FILE *file = (FILE *)afile; | |
2557 | ||
923f08ff | 2558 | switch (how) |
252b5132 | 2559 | { |
923f08ff AM |
2560 | case bfd_print_symbol_name: |
2561 | if (symbol->name) | |
2562 | fprintf (file,"%s", symbol->name); | |
2563 | break; | |
2564 | case bfd_print_symbol_more: | |
2565 | fprintf (file,"%4x %2x %2x", | |
2566 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2567 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2568 | (unsigned) (aout_symbol (symbol)->type)); | |
2569 | break; | |
2570 | case bfd_print_symbol_all: | |
2571 | { | |
2572 | const char *section_name = symbol->section->name; | |
252b5132 | 2573 | |
116c20d2 | 2574 | bfd_print_symbol_vandf (abfd, (void *)file, symbol); |
252b5132 | 2575 | |
923f08ff AM |
2576 | fprintf (file," %-5s %04x %02x %02x", |
2577 | section_name, | |
2578 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2579 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2580 | (unsigned) (aout_symbol (symbol)->type & 0xff)); | |
2581 | if (symbol->name) | |
2582 | fprintf (file," %s", symbol->name); | |
2583 | } | |
2584 | break; | |
252b5132 | 2585 | } |
252b5132 RH |
2586 | } |
2587 | ||
2588 | /* If we don't have to allocate more than 1MB to hold the generic | |
2589 | symbols, we use the generic minisymbol methord: it's faster, since | |
2590 | it only translates the symbols once, not multiple times. */ | |
2591 | #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) | |
2592 | ||
2593 | /* Read minisymbols. For minisymbols, we use the unmodified a.out | |
2594 | symbols. The minisymbol_to_symbol function translates these into | |
2595 | BFD asymbol structures. */ | |
2596 | ||
2597 | long | |
116c20d2 NC |
2598 | NAME (aout, read_minisymbols) (bfd *abfd, |
2599 | bfd_boolean dynamic, | |
2600 | void * *minisymsp, | |
2601 | unsigned int *sizep) | |
252b5132 RH |
2602 | { |
2603 | if (dynamic) | |
116c20d2 NC |
2604 | /* We could handle the dynamic symbols here as well, but it's |
2605 | easier to hand them off. */ | |
2606 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
252b5132 RH |
2607 | |
2608 | if (! aout_get_external_symbols (abfd)) | |
2609 | return -1; | |
2610 | ||
2611 | if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2612 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2613 | ||
116c20d2 | 2614 | *minisymsp = (void *) obj_aout_external_syms (abfd); |
252b5132 RH |
2615 | |
2616 | /* By passing the external symbols back from this routine, we are | |
2617 | giving up control over the memory block. Clear | |
2618 | obj_aout_external_syms, so that we do not try to free it | |
2619 | ourselves. */ | |
2620 | obj_aout_external_syms (abfd) = NULL; | |
2621 | ||
2622 | *sizep = EXTERNAL_NLIST_SIZE; | |
2623 | return obj_aout_external_sym_count (abfd); | |
2624 | } | |
2625 | ||
2626 | /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an | |
2627 | unmodified a.out symbol. The SYM argument is a structure returned | |
2628 | by bfd_make_empty_symbol, which we fill in here. */ | |
2629 | ||
2630 | asymbol * | |
116c20d2 NC |
2631 | NAME (aout, minisymbol_to_symbol) (bfd *abfd, |
2632 | bfd_boolean dynamic, | |
2633 | const void * minisym, | |
2634 | asymbol *sym) | |
252b5132 RH |
2635 | { |
2636 | if (dynamic | |
2637 | || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2638 | return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); | |
2639 | ||
2640 | memset (sym, 0, sizeof (aout_symbol_type)); | |
2641 | ||
2642 | /* We call translate_symbol_table to translate a single symbol. */ | |
116c20d2 | 2643 | if (! (NAME (aout, translate_symbol_table) |
252b5132 RH |
2644 | (abfd, |
2645 | (aout_symbol_type *) sym, | |
2646 | (struct external_nlist *) minisym, | |
2647 | (bfd_size_type) 1, | |
2648 | obj_aout_external_strings (abfd), | |
2649 | obj_aout_external_string_size (abfd), | |
b34976b6 | 2650 | FALSE))) |
252b5132 RH |
2651 | return NULL; |
2652 | ||
2653 | return sym; | |
2654 | } | |
2655 | ||
f7c33884 NC |
2656 | /* Provided a BFD, a section and an offset into the section, calculate |
2657 | and return the name of the source file and the line nearest to the | |
2658 | wanted location. */ | |
252b5132 | 2659 | |
b34976b6 | 2660 | bfd_boolean |
116c20d2 | 2661 | NAME (aout, find_nearest_line) (bfd *abfd, |
116c20d2 | 2662 | asymbol **symbols, |
fb167eb2 | 2663 | asection *section, |
116c20d2 NC |
2664 | bfd_vma offset, |
2665 | const char **filename_ptr, | |
2666 | const char **functionname_ptr, | |
fb167eb2 AM |
2667 | unsigned int *line_ptr, |
2668 | unsigned int *disriminator_ptr) | |
252b5132 | 2669 | { |
f7c33884 | 2670 | /* Run down the file looking for the filename, function and linenumber. */ |
252b5132 | 2671 | asymbol **p; |
dc810e39 AM |
2672 | const char *directory_name = NULL; |
2673 | const char *main_file_name = NULL; | |
2674 | const char *current_file_name = NULL; | |
116c20d2 | 2675 | const char *line_file_name = NULL; /* Value of current_file_name at line number. */ |
dc810e39 | 2676 | const char *line_directory_name = NULL; /* Value of directory_name at line number. */ |
252b5132 RH |
2677 | bfd_vma low_line_vma = 0; |
2678 | bfd_vma low_func_vma = 0; | |
2679 | asymbol *func = 0; | |
dc810e39 | 2680 | bfd_size_type filelen, funclen; |
252b5132 RH |
2681 | char *buf; |
2682 | ||
2683 | *filename_ptr = abfd->filename; | |
50455f1a | 2684 | *functionname_ptr = NULL; |
252b5132 | 2685 | *line_ptr = 0; |
fb167eb2 AM |
2686 | if (disriminator_ptr) |
2687 | *disriminator_ptr = 0; | |
f7c33884 | 2688 | |
116c20d2 | 2689 | if (symbols != NULL) |
923f08ff AM |
2690 | { |
2691 | for (p = symbols; *p; p++) | |
2692 | { | |
2693 | aout_symbol_type *q = (aout_symbol_type *) (*p); | |
2694 | next: | |
2695 | switch (q->type) | |
2696 | { | |
2697 | case N_TEXT: | |
2698 | /* If this looks like a file name symbol, and it comes after | |
2699 | the line number we have found so far, but before the | |
2700 | offset, then we have probably not found the right line | |
2701 | number. */ | |
2702 | if (q->symbol.value <= offset | |
2703 | && ((q->symbol.value > low_line_vma | |
2704 | && (line_file_name != NULL | |
2705 | || *line_ptr != 0)) | |
2706 | || (q->symbol.value > low_func_vma | |
2707 | && func != NULL))) | |
2708 | { | |
2709 | const char *symname; | |
252b5132 | 2710 | |
923f08ff | 2711 | symname = q->symbol.name; |
808346fc NC |
2712 | |
2713 | if (symname != NULL | |
2714 | && strlen (symname) > 2 | |
2715 | && strcmp (symname + strlen (symname) - 2, ".o") == 0) | |
923f08ff AM |
2716 | { |
2717 | if (q->symbol.value > low_line_vma) | |
2718 | { | |
2719 | *line_ptr = 0; | |
2720 | line_file_name = NULL; | |
2721 | } | |
2722 | if (q->symbol.value > low_func_vma) | |
2723 | func = NULL; | |
2724 | } | |
2725 | } | |
2726 | break; | |
252b5132 | 2727 | |
923f08ff AM |
2728 | case N_SO: |
2729 | /* If this symbol is less than the offset, but greater than | |
2730 | the line number we have found so far, then we have not | |
2731 | found the right line number. */ | |
2732 | if (q->symbol.value <= offset) | |
2733 | { | |
2734 | if (q->symbol.value > low_line_vma) | |
2735 | { | |
2736 | *line_ptr = 0; | |
2737 | line_file_name = NULL; | |
2738 | } | |
2739 | if (q->symbol.value > low_func_vma) | |
2740 | func = NULL; | |
2741 | } | |
252b5132 | 2742 | |
923f08ff AM |
2743 | main_file_name = current_file_name = q->symbol.name; |
2744 | /* Look ahead to next symbol to check if that too is an N_SO. */ | |
2745 | p++; | |
2746 | if (*p == NULL) | |
c3864421 | 2747 | goto done; |
923f08ff AM |
2748 | q = (aout_symbol_type *) (*p); |
2749 | if (q->type != (int)N_SO) | |
2750 | goto next; | |
2751 | ||
2752 | /* Found a second N_SO First is directory; second is filename. */ | |
2753 | directory_name = current_file_name; | |
2754 | main_file_name = current_file_name = q->symbol.name; | |
2755 | if (obj_textsec (abfd) != section) | |
2756 | goto done; | |
2757 | break; | |
2758 | case N_SOL: | |
2759 | current_file_name = q->symbol.name; | |
2760 | break; | |
252b5132 | 2761 | |
923f08ff | 2762 | case N_SLINE: |
252b5132 | 2763 | |
923f08ff AM |
2764 | case N_DSLINE: |
2765 | case N_BSLINE: | |
2766 | /* We'll keep this if it resolves nearer than the one we have | |
2767 | already. */ | |
2768 | if (q->symbol.value >= low_line_vma | |
2769 | && q->symbol.value <= offset) | |
2770 | { | |
2771 | *line_ptr = q->desc; | |
2772 | low_line_vma = q->symbol.value; | |
2773 | line_file_name = current_file_name; | |
2774 | line_directory_name = directory_name; | |
2775 | } | |
2776 | break; | |
2777 | case N_FUN: | |
2778 | { | |
f7c33884 | 2779 | /* We'll keep this if it is nearer than the one we have already. */ |
808346fc NC |
2780 | if (q->symbol.value >= low_func_vma |
2781 | && q->symbol.value <= offset) | |
f7c33884 NC |
2782 | { |
2783 | low_func_vma = q->symbol.value; | |
2784 | func = (asymbol *)q; | |
2785 | } | |
923f08ff AM |
2786 | else if (q->symbol.value > offset) |
2787 | goto done; | |
2788 | } | |
2789 | break; | |
2790 | } | |
252b5132 | 2791 | } |
252b5132 | 2792 | } |
252b5132 RH |
2793 | |
2794 | done: | |
2795 | if (*line_ptr != 0) | |
2796 | { | |
2797 | main_file_name = line_file_name; | |
2798 | directory_name = line_directory_name; | |
2799 | } | |
2800 | ||
2801 | if (main_file_name == NULL | |
5af11cab | 2802 | || IS_ABSOLUTE_PATH (main_file_name) |
252b5132 RH |
2803 | || directory_name == NULL) |
2804 | filelen = 0; | |
2805 | else | |
2806 | filelen = strlen (directory_name) + strlen (main_file_name); | |
f7c33884 | 2807 | |
252b5132 RH |
2808 | if (func == NULL) |
2809 | funclen = 0; | |
2810 | else | |
2811 | funclen = strlen (bfd_asymbol_name (func)); | |
2812 | ||
2813 | if (adata (abfd).line_buf != NULL) | |
2814 | free (adata (abfd).line_buf); | |
f7c33884 | 2815 | |
252b5132 RH |
2816 | if (filelen + funclen == 0) |
2817 | adata (abfd).line_buf = buf = NULL; | |
2818 | else | |
2819 | { | |
a50b1753 | 2820 | buf = (char *) bfd_malloc (filelen + funclen + 3); |
252b5132 RH |
2821 | adata (abfd).line_buf = buf; |
2822 | if (buf == NULL) | |
b34976b6 | 2823 | return FALSE; |
252b5132 RH |
2824 | } |
2825 | ||
2826 | if (main_file_name != NULL) | |
2827 | { | |
5af11cab | 2828 | if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL) |
252b5132 RH |
2829 | *filename_ptr = main_file_name; |
2830 | else | |
2831 | { | |
50455f1a NC |
2832 | if (buf == NULL) |
2833 | /* PR binutils/20891: In a corrupt input file both | |
2834 | main_file_name and directory_name can be empty... */ | |
2835 | * filename_ptr = NULL; | |
2836 | else | |
2837 | { | |
2838 | snprintf (buf, filelen + 1, "%s%s", directory_name, | |
2839 | main_file_name); | |
2840 | *filename_ptr = buf; | |
2841 | buf += filelen + 1; | |
2842 | } | |
252b5132 RH |
2843 | } |
2844 | } | |
2845 | ||
2846 | if (func) | |
2847 | { | |
2848 | const char *function = func->name; | |
dc810e39 | 2849 | char *colon; |
252b5132 | 2850 | |
e82ab856 NC |
2851 | if (buf == NULL) |
2852 | { | |
2853 | /* PR binutils/20892: In a corrupt input file func can be empty. */ | |
2854 | * functionname_ptr = NULL; | |
2855 | return TRUE; | |
2856 | } | |
252b5132 RH |
2857 | /* The caller expects a symbol name. We actually have a |
2858 | function name, without the leading underscore. Put the | |
2859 | underscore back in, so that the caller gets a symbol name. */ | |
2860 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
2861 | strcpy (buf, function); | |
2862 | else | |
2863 | { | |
2864 | buf[0] = bfd_get_symbol_leading_char (abfd); | |
2865 | strcpy (buf + 1, function); | |
2866 | } | |
f7c33884 | 2867 | /* Have to remove : stuff. */ |
dc810e39 AM |
2868 | colon = strchr (buf, ':'); |
2869 | if (colon != NULL) | |
2870 | *colon = '\0'; | |
252b5132 RH |
2871 | *functionname_ptr = buf; |
2872 | } | |
2873 | ||
b34976b6 | 2874 | return TRUE; |
252b5132 RH |
2875 | } |
2876 | ||
252b5132 | 2877 | int |
a6b96beb AM |
2878 | NAME (aout, sizeof_headers) (bfd *abfd, |
2879 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
252b5132 | 2880 | { |
923f08ff | 2881 | return adata (abfd).exec_bytes_size; |
252b5132 RH |
2882 | } |
2883 | ||
2884 | /* Free all information we have cached for this BFD. We can always | |
2885 | read it again later if we need it. */ | |
2886 | ||
b34976b6 | 2887 | bfd_boolean |
116c20d2 | 2888 | NAME (aout, bfd_free_cached_info) (bfd *abfd) |
252b5132 RH |
2889 | { |
2890 | asection *o; | |
2891 | ||
920581c5 L |
2892 | if (bfd_get_format (abfd) != bfd_object |
2893 | || abfd->tdata.aout_data == NULL) | |
b34976b6 | 2894 | return TRUE; |
252b5132 RH |
2895 | |
2896 | #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } | |
2897 | BFCI_FREE (obj_aout_symbols (abfd)); | |
2898 | #ifdef USE_MMAP | |
2899 | obj_aout_external_syms (abfd) = 0; | |
2900 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2901 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2902 | obj_aout_external_strings (abfd) = 0; | |
2903 | #else | |
2904 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2905 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
2906 | #endif | |
116c20d2 | 2907 | for (o = abfd->sections; o != NULL; o = o->next) |
252b5132 RH |
2908 | BFCI_FREE (o->relocation); |
2909 | #undef BFCI_FREE | |
2910 | ||
b34976b6 | 2911 | return TRUE; |
252b5132 RH |
2912 | } |
2913 | \f | |
2914 | /* a.out link code. */ | |
2915 | ||
252b5132 RH |
2916 | /* Routine to create an entry in an a.out link hash table. */ |
2917 | ||
2918 | struct bfd_hash_entry * | |
116c20d2 NC |
2919 | NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry, |
2920 | struct bfd_hash_table *table, | |
2921 | const char *string) | |
252b5132 RH |
2922 | { |
2923 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2924 | ||
2925 | /* Allocate the structure if it has not already been allocated by a | |
2926 | subclass. */ | |
116c20d2 | 2927 | if (ret == NULL) |
a50b1753 | 2928 | ret = (struct aout_link_hash_entry *) bfd_hash_allocate (table, |
07d6d2b8 | 2929 | sizeof (* ret)); |
116c20d2 NC |
2930 | if (ret == NULL) |
2931 | return NULL; | |
252b5132 RH |
2932 | |
2933 | /* Call the allocation method of the superclass. */ | |
2934 | ret = ((struct aout_link_hash_entry *) | |
2935 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2936 | table, string)); | |
2937 | if (ret) | |
2938 | { | |
2939 | /* Set local fields. */ | |
b34976b6 | 2940 | ret->written = FALSE; |
252b5132 RH |
2941 | ret->indx = -1; |
2942 | } | |
2943 | ||
2944 | return (struct bfd_hash_entry *) ret; | |
2945 | } | |
2946 | ||
2947 | /* Initialize an a.out link hash table. */ | |
2948 | ||
b34976b6 | 2949 | bfd_boolean |
116c20d2 NC |
2950 | NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table, |
2951 | bfd *abfd, | |
2952 | struct bfd_hash_entry *(*newfunc) | |
2953 | (struct bfd_hash_entry *, struct bfd_hash_table *, | |
66eb6687 AM |
2954 | const char *), |
2955 | unsigned int entsize) | |
252b5132 | 2956 | { |
66eb6687 | 2957 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
252b5132 RH |
2958 | } |
2959 | ||
2960 | /* Create an a.out link hash table. */ | |
2961 | ||
2962 | struct bfd_link_hash_table * | |
116c20d2 | 2963 | NAME (aout, link_hash_table_create) (bfd *abfd) |
252b5132 RH |
2964 | { |
2965 | struct aout_link_hash_table *ret; | |
986f0783 | 2966 | size_t amt = sizeof (* ret); |
252b5132 | 2967 | |
a50b1753 | 2968 | ret = (struct aout_link_hash_table *) bfd_malloc (amt); |
252b5132 | 2969 | if (ret == NULL) |
116c20d2 | 2970 | return NULL; |
5ed6aba4 | 2971 | |
66eb6687 AM |
2972 | if (!NAME (aout, link_hash_table_init) (ret, abfd, |
2973 | NAME (aout, link_hash_newfunc), | |
2974 | sizeof (struct aout_link_hash_entry))) | |
252b5132 RH |
2975 | { |
2976 | free (ret); | |
116c20d2 | 2977 | return NULL; |
252b5132 RH |
2978 | } |
2979 | return &ret->root; | |
2980 | } | |
2981 | ||
116c20d2 | 2982 | /* Add all symbols from an object file to the hash table. */ |
252b5132 | 2983 | |
b34976b6 | 2984 | static bfd_boolean |
116c20d2 | 2985 | aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 2986 | { |
116c20d2 NC |
2987 | bfd_boolean (*add_one_symbol) |
2988 | (struct bfd_link_info *, bfd *, const char *, flagword, asection *, | |
2989 | bfd_vma, const char *, bfd_boolean, bfd_boolean, | |
2990 | struct bfd_link_hash_entry **); | |
2991 | struct external_nlist *syms; | |
2992 | bfd_size_type sym_count; | |
2993 | char *strings; | |
2994 | bfd_boolean copy; | |
2995 | struct aout_link_hash_entry **sym_hash; | |
2996 | struct external_nlist *p; | |
2997 | struct external_nlist *pend; | |
2998 | bfd_size_type amt; | |
252b5132 | 2999 | |
116c20d2 NC |
3000 | syms = obj_aout_external_syms (abfd); |
3001 | sym_count = obj_aout_external_sym_count (abfd); | |
3002 | strings = obj_aout_external_strings (abfd); | |
3003 | if (info->keep_memory) | |
3004 | copy = FALSE; | |
3005 | else | |
3006 | copy = TRUE; | |
252b5132 | 3007 | |
116c20d2 | 3008 | if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) |
252b5132 | 3009 | { |
116c20d2 NC |
3010 | if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) |
3011 | (abfd, info, &syms, &sym_count, &strings))) | |
b34976b6 | 3012 | return FALSE; |
252b5132 RH |
3013 | } |
3014 | ||
20c6e70e MS |
3015 | if (sym_count == 0) |
3016 | return TRUE; /* Nothing to do. */ | |
3017 | ||
116c20d2 NC |
3018 | /* We keep a list of the linker hash table entries that correspond |
3019 | to particular symbols. We could just look them up in the hash | |
3020 | table, but keeping the list is more efficient. Perhaps this | |
3021 | should be conditional on info->keep_memory. */ | |
3022 | amt = sym_count * sizeof (struct aout_link_hash_entry *); | |
a50b1753 | 3023 | sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt); |
20c6e70e | 3024 | if (sym_hash == NULL) |
116c20d2 NC |
3025 | return FALSE; |
3026 | obj_aout_sym_hashes (abfd) = sym_hash; | |
252b5132 | 3027 | |
116c20d2 NC |
3028 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; |
3029 | if (add_one_symbol == NULL) | |
3030 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
252b5132 | 3031 | |
116c20d2 NC |
3032 | p = syms; |
3033 | pend = p + sym_count; | |
3034 | for (; p < pend; p++, sym_hash++) | |
252b5132 | 3035 | { |
116c20d2 | 3036 | int type; |
252b5132 | 3037 | const char *name; |
116c20d2 NC |
3038 | bfd_vma value; |
3039 | asection *section; | |
3040 | flagword flags; | |
3041 | const char *string; | |
252b5132 | 3042 | |
116c20d2 | 3043 | *sym_hash = NULL; |
252b5132 | 3044 | |
116c20d2 | 3045 | type = H_GET_8 (abfd, p->e_type); |
252b5132 | 3046 | |
116c20d2 NC |
3047 | /* Ignore debugging symbols. */ |
3048 | if ((type & N_STAB) != 0) | |
3049 | continue; | |
252b5132 | 3050 | |
e517df3d | 3051 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
531336e3 | 3052 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3053 | return FALSE; |
116c20d2 NC |
3054 | name = strings + GET_WORD (abfd, p->e_strx); |
3055 | value = GET_WORD (abfd, p->e_value); | |
3056 | flags = BSF_GLOBAL; | |
3057 | string = NULL; | |
3058 | switch (type) | |
252b5132 | 3059 | { |
116c20d2 NC |
3060 | default: |
3061 | abort (); | |
f7c33884 | 3062 | |
116c20d2 NC |
3063 | case N_UNDF: |
3064 | case N_ABS: | |
3065 | case N_TEXT: | |
3066 | case N_DATA: | |
3067 | case N_BSS: | |
3068 | case N_FN_SEQ: | |
3069 | case N_COMM: | |
3070 | case N_SETV: | |
3071 | case N_FN: | |
3072 | /* Ignore symbols that are not externally visible. */ | |
3073 | continue; | |
3074 | case N_INDR: | |
3075 | /* Ignore local indirect symbol. */ | |
3076 | ++p; | |
3077 | ++sym_hash; | |
3078 | continue; | |
252b5132 | 3079 | |
116c20d2 NC |
3080 | case N_UNDF | N_EXT: |
3081 | if (value == 0) | |
f7c33884 | 3082 | { |
116c20d2 NC |
3083 | section = bfd_und_section_ptr; |
3084 | flags = 0; | |
252b5132 RH |
3085 | } |
3086 | else | |
3087 | section = bfd_com_section_ptr; | |
3088 | break; | |
3089 | case N_ABS | N_EXT: | |
3090 | section = bfd_abs_section_ptr; | |
3091 | break; | |
3092 | case N_TEXT | N_EXT: | |
3093 | section = obj_textsec (abfd); | |
fd361982 | 3094 | value -= bfd_section_vma (section); |
252b5132 RH |
3095 | break; |
3096 | case N_DATA | N_EXT: | |
3097 | case N_SETV | N_EXT: | |
3098 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
3099 | translate_from_native_sym_flags. */ | |
3100 | section = obj_datasec (abfd); | |
fd361982 | 3101 | value -= bfd_section_vma (section); |
252b5132 RH |
3102 | break; |
3103 | case N_BSS | N_EXT: | |
3104 | section = obj_bsssec (abfd); | |
fd361982 | 3105 | value -= bfd_section_vma (section); |
252b5132 RH |
3106 | break; |
3107 | case N_INDR | N_EXT: | |
3108 | /* An indirect symbol. The next symbol is the symbol | |
3109 | which this one really is. */ | |
39d4daf6 NC |
3110 | /* See PR 20925 for a reproducer. */ |
3111 | if (p + 1 >= pend) | |
3112 | return FALSE; | |
252b5132 | 3113 | ++p; |
e517df3d | 3114 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
daae68f4 | 3115 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3116 | return FALSE; |
252b5132 RH |
3117 | string = strings + GET_WORD (abfd, p->e_strx); |
3118 | section = bfd_ind_section_ptr; | |
3119 | flags |= BSF_INDIRECT; | |
3120 | break; | |
3121 | case N_COMM | N_EXT: | |
3122 | section = bfd_com_section_ptr; | |
3123 | break; | |
3124 | case N_SETA: case N_SETA | N_EXT: | |
3125 | section = bfd_abs_section_ptr; | |
3126 | flags |= BSF_CONSTRUCTOR; | |
3127 | break; | |
3128 | case N_SETT: case N_SETT | N_EXT: | |
3129 | section = obj_textsec (abfd); | |
3130 | flags |= BSF_CONSTRUCTOR; | |
fd361982 | 3131 | value -= bfd_section_vma (section); |
252b5132 RH |
3132 | break; |
3133 | case N_SETD: case N_SETD | N_EXT: | |
3134 | section = obj_datasec (abfd); | |
3135 | flags |= BSF_CONSTRUCTOR; | |
fd361982 | 3136 | value -= bfd_section_vma (section); |
252b5132 RH |
3137 | break; |
3138 | case N_SETB: case N_SETB | N_EXT: | |
3139 | section = obj_bsssec (abfd); | |
3140 | flags |= BSF_CONSTRUCTOR; | |
fd361982 | 3141 | value -= bfd_section_vma (section); |
252b5132 RH |
3142 | break; |
3143 | case N_WARNING: | |
3144 | /* A warning symbol. The next symbol is the one to warn | |
9f400ee9 HPN |
3145 | about. If there is no next symbol, just look away. */ |
3146 | if (p + 1 >= pend) | |
3147 | return TRUE; | |
252b5132 RH |
3148 | ++p; |
3149 | string = name; | |
e517df3d | 3150 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
daae68f4 | 3151 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3152 | return FALSE; |
252b5132 RH |
3153 | name = strings + GET_WORD (abfd, p->e_strx); |
3154 | section = bfd_und_section_ptr; | |
3155 | flags |= BSF_WARNING; | |
3156 | break; | |
3157 | case N_WEAKU: | |
3158 | section = bfd_und_section_ptr; | |
3159 | flags = BSF_WEAK; | |
3160 | break; | |
3161 | case N_WEAKA: | |
3162 | section = bfd_abs_section_ptr; | |
3163 | flags = BSF_WEAK; | |
3164 | break; | |
3165 | case N_WEAKT: | |
3166 | section = obj_textsec (abfd); | |
fd361982 | 3167 | value -= bfd_section_vma (section); |
252b5132 RH |
3168 | flags = BSF_WEAK; |
3169 | break; | |
3170 | case N_WEAKD: | |
3171 | section = obj_datasec (abfd); | |
fd361982 | 3172 | value -= bfd_section_vma (section); |
252b5132 RH |
3173 | flags = BSF_WEAK; |
3174 | break; | |
3175 | case N_WEAKB: | |
3176 | section = obj_bsssec (abfd); | |
fd361982 | 3177 | value -= bfd_section_vma (section); |
252b5132 RH |
3178 | flags = BSF_WEAK; |
3179 | break; | |
3180 | } | |
3181 | ||
3182 | if (! ((*add_one_symbol) | |
b34976b6 | 3183 | (info, abfd, name, flags, section, value, string, copy, FALSE, |
252b5132 | 3184 | (struct bfd_link_hash_entry **) sym_hash))) |
b34976b6 | 3185 | return FALSE; |
252b5132 RH |
3186 | |
3187 | /* Restrict the maximum alignment of a common symbol based on | |
3188 | the architecture, since a.out has no way to represent | |
3189 | alignment requirements of a section in a .o file. FIXME: | |
3190 | This isn't quite right: it should use the architecture of the | |
3191 | output file, not the input files. */ | |
3192 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
3193 | && ((*sym_hash)->root.u.c.p->alignment_power > | |
3194 | bfd_get_arch_info (abfd)->section_align_power)) | |
3195 | (*sym_hash)->root.u.c.p->alignment_power = | |
3196 | bfd_get_arch_info (abfd)->section_align_power; | |
3197 | ||
3198 | /* If this is a set symbol, and we are not building sets, then | |
3199 | it is possible for the hash entry to not have been set. In | |
3200 | such a case, treat the symbol as not globally defined. */ | |
3201 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
3202 | { | |
3203 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
3204 | *sym_hash = NULL; | |
3205 | } | |
3206 | ||
3207 | if (type == (N_INDR | N_EXT) || type == N_WARNING) | |
3208 | ++sym_hash; | |
3209 | } | |
3210 | ||
b34976b6 | 3211 | return TRUE; |
252b5132 | 3212 | } |
252b5132 | 3213 | |
116c20d2 NC |
3214 | /* Free up the internal symbols read from an a.out file. */ |
3215 | ||
3216 | static bfd_boolean | |
3217 | aout_link_free_symbols (bfd *abfd) | |
252b5132 | 3218 | { |
116c20d2 NC |
3219 | if (obj_aout_external_syms (abfd) != NULL) |
3220 | { | |
3221 | #ifdef USE_MMAP | |
3222 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
3223 | #else | |
3224 | free ((void *) obj_aout_external_syms (abfd)); | |
3225 | #endif | |
3226 | obj_aout_external_syms (abfd) = NULL; | |
3227 | } | |
3228 | if (obj_aout_external_strings (abfd) != NULL) | |
3229 | { | |
3230 | #ifdef USE_MMAP | |
3231 | bfd_free_window (&obj_aout_string_window (abfd)); | |
3232 | #else | |
3233 | free ((void *) obj_aout_external_strings (abfd)); | |
3234 | #endif | |
3235 | obj_aout_external_strings (abfd) = NULL; | |
3236 | } | |
3237 | return TRUE; | |
3238 | } | |
252b5132 | 3239 | |
116c20d2 | 3240 | /* Add symbols from an a.out object file. */ |
252b5132 | 3241 | |
116c20d2 NC |
3242 | static bfd_boolean |
3243 | aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) | |
252b5132 | 3244 | { |
116c20d2 NC |
3245 | if (! aout_get_external_symbols (abfd)) |
3246 | return FALSE; | |
3247 | if (! aout_link_add_symbols (abfd, info)) | |
3248 | return FALSE; | |
3249 | if (! info->keep_memory) | |
3250 | { | |
3251 | if (! aout_link_free_symbols (abfd)) | |
3252 | return FALSE; | |
3253 | } | |
3254 | return TRUE; | |
3255 | } | |
252b5132 | 3256 | |
116c20d2 NC |
3257 | /* Look through the internal symbols to see if this object file should |
3258 | be included in the link. We should include this object file if it | |
3259 | defines any symbols which are currently undefined. If this object | |
3260 | file defines a common symbol, then we may adjust the size of the | |
3261 | known symbol but we do not include the object file in the link | |
3262 | (unless there is some other reason to include it). */ | |
252b5132 | 3263 | |
116c20d2 NC |
3264 | static bfd_boolean |
3265 | aout_link_check_ar_symbols (bfd *abfd, | |
3266 | struct bfd_link_info *info, | |
5d3236ee DK |
3267 | bfd_boolean *pneeded, |
3268 | bfd **subsbfd) | |
252b5132 | 3269 | { |
116c20d2 NC |
3270 | struct external_nlist *p; |
3271 | struct external_nlist *pend; | |
3272 | char *strings; | |
252b5132 | 3273 | |
116c20d2 | 3274 | *pneeded = FALSE; |
252b5132 | 3275 | |
116c20d2 NC |
3276 | /* Look through all the symbols. */ |
3277 | p = obj_aout_external_syms (abfd); | |
3278 | pend = p + obj_aout_external_sym_count (abfd); | |
3279 | strings = obj_aout_external_strings (abfd); | |
3280 | for (; p < pend; p++) | |
3281 | { | |
3282 | int type = H_GET_8 (abfd, p->e_type); | |
3283 | const char *name; | |
3284 | struct bfd_link_hash_entry *h; | |
252b5132 | 3285 | |
116c20d2 NC |
3286 | /* Ignore symbols that are not externally visible. This is an |
3287 | optimization only, as we check the type more thoroughly | |
3288 | below. */ | |
3289 | if (((type & N_EXT) == 0 | |
3290 | || (type & N_STAB) != 0 | |
3291 | || type == N_FN) | |
3292 | && type != N_WEAKA | |
3293 | && type != N_WEAKT | |
3294 | && type != N_WEAKD | |
3295 | && type != N_WEAKB) | |
3296 | { | |
3297 | if (type == N_WARNING | |
3298 | || type == N_INDR) | |
3299 | ++p; | |
3300 | continue; | |
3301 | } | |
3302 | ||
3303 | name = strings + GET_WORD (abfd, p->e_strx); | |
3304 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); | |
3305 | ||
3306 | /* We are only interested in symbols that are currently | |
3307 | undefined or common. */ | |
3308 | if (h == NULL | |
3309 | || (h->type != bfd_link_hash_undefined | |
3310 | && h->type != bfd_link_hash_common)) | |
3311 | { | |
3312 | if (type == (N_INDR | N_EXT)) | |
3313 | ++p; | |
3314 | continue; | |
3315 | } | |
3316 | ||
3317 | if (type == (N_TEXT | N_EXT) | |
3318 | || type == (N_DATA | N_EXT) | |
3319 | || type == (N_BSS | N_EXT) | |
3320 | || type == (N_ABS | N_EXT) | |
3321 | || type == (N_INDR | N_EXT)) | |
3322 | { | |
3323 | /* This object file defines this symbol. We must link it | |
3324 | in. This is true regardless of whether the current | |
3325 | definition of the symbol is undefined or common. | |
3326 | ||
07d6d2b8 | 3327 | If the current definition is common, we have a case in |
116c20d2 | 3328 | which we have already seen an object file including: |
07d6d2b8 | 3329 | int a; |
116c20d2 | 3330 | and this object file from the archive includes: |
07d6d2b8 | 3331 | int a = 5; |
116c20d2 | 3332 | In such a case, whether to include this object is target |
07d6d2b8 | 3333 | dependant for backward compatibility. |
116c20d2 NC |
3334 | |
3335 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
3336 | element if the symbol is defined in the .data section, | |
3337 | but not if it is defined in the .text section. That | |
3338 | seems a bit crazy to me, and it has not been implemented | |
3339 | yet. However, it might be correct. */ | |
3340 | if (h->type == bfd_link_hash_common) | |
3341 | { | |
3342 | int skip = 0; | |
3343 | ||
f88dc410 | 3344 | switch (info->common_skip_ar_symbols) |
116c20d2 | 3345 | { |
a78eea16 AM |
3346 | case bfd_link_common_skip_none: |
3347 | break; | |
116c20d2 NC |
3348 | case bfd_link_common_skip_text: |
3349 | skip = (type == (N_TEXT | N_EXT)); | |
3350 | break; | |
3351 | case bfd_link_common_skip_data: | |
3352 | skip = (type == (N_DATA | N_EXT)); | |
3353 | break; | |
116c20d2 NC |
3354 | case bfd_link_common_skip_all: |
3355 | skip = 1; | |
3356 | break; | |
3357 | } | |
3358 | ||
3359 | if (skip) | |
3360 | continue; | |
3361 | } | |
3362 | ||
0e144ba7 AM |
3363 | if (!(*info->callbacks |
3364 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3365 | return FALSE; |
3366 | *pneeded = TRUE; | |
3367 | return TRUE; | |
3368 | } | |
3369 | ||
3370 | if (type == (N_UNDF | N_EXT)) | |
3371 | { | |
3372 | bfd_vma value; | |
3373 | ||
3374 | value = GET_WORD (abfd, p->e_value); | |
3375 | if (value != 0) | |
3376 | { | |
3377 | /* This symbol is common in the object from the archive | |
3378 | file. */ | |
3379 | if (h->type == bfd_link_hash_undefined) | |
3380 | { | |
3381 | bfd *symbfd; | |
3382 | unsigned int power; | |
3383 | ||
3384 | symbfd = h->u.undef.abfd; | |
3385 | if (symbfd == NULL) | |
3386 | { | |
3387 | /* This symbol was created as undefined from | |
3388 | outside BFD. We assume that we should link | |
3389 | in the object file. This is done for the -u | |
3390 | option in the linker. */ | |
0e144ba7 AM |
3391 | if (!(*info->callbacks |
3392 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3393 | return FALSE; |
3394 | *pneeded = TRUE; | |
3395 | return TRUE; | |
3396 | } | |
3397 | /* Turn the current link symbol into a common | |
3398 | symbol. It is already on the undefs list. */ | |
3399 | h->type = bfd_link_hash_common; | |
a50b1753 | 3400 | h->u.c.p = (struct bfd_link_hash_common_entry *) |
0e144ba7 AM |
3401 | bfd_hash_allocate (&info->hash->table, |
3402 | sizeof (struct bfd_link_hash_common_entry)); | |
116c20d2 NC |
3403 | if (h->u.c.p == NULL) |
3404 | return FALSE; | |
3405 | ||
3406 | h->u.c.size = value; | |
3407 | ||
3408 | /* FIXME: This isn't quite right. The maximum | |
3409 | alignment of a common symbol should be set by the | |
3410 | architecture of the output file, not of the input | |
3411 | file. */ | |
3412 | power = bfd_log2 (value); | |
3413 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
3414 | power = bfd_get_arch_info (abfd)->section_align_power; | |
3415 | h->u.c.p->alignment_power = power; | |
3416 | ||
3417 | h->u.c.p->section = bfd_make_section_old_way (symbfd, | |
3418 | "COMMON"); | |
3419 | } | |
3420 | else | |
3421 | { | |
3422 | /* Adjust the size of the common symbol if | |
3423 | necessary. */ | |
3424 | if (value > h->u.c.size) | |
3425 | h->u.c.size = value; | |
3426 | } | |
3427 | } | |
3428 | } | |
3429 | ||
3430 | if (type == N_WEAKA | |
3431 | || type == N_WEAKT | |
3432 | || type == N_WEAKD | |
3433 | || type == N_WEAKB) | |
3434 | { | |
3435 | /* This symbol is weak but defined. We must pull it in if | |
3436 | the current link symbol is undefined, but we don't want | |
3437 | it if the current link symbol is common. */ | |
3438 | if (h->type == bfd_link_hash_undefined) | |
3439 | { | |
0e144ba7 AM |
3440 | if (!(*info->callbacks |
3441 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3442 | return FALSE; |
3443 | *pneeded = TRUE; | |
3444 | return TRUE; | |
3445 | } | |
3446 | } | |
3447 | } | |
3448 | ||
3449 | /* We do not need this object file. */ | |
3450 | return TRUE; | |
3451 | } | |
3452 | /* Check a single archive element to see if we need to include it in | |
3453 | the link. *PNEEDED is set according to whether this element is | |
3454 | needed in the link or not. This is called from | |
3455 | _bfd_generic_link_add_archive_symbols. */ | |
3456 | ||
3457 | static bfd_boolean | |
3458 | aout_link_check_archive_element (bfd *abfd, | |
3459 | struct bfd_link_info *info, | |
13e570f8 AM |
3460 | struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED, |
3461 | const char *name ATTRIBUTE_UNUSED, | |
116c20d2 NC |
3462 | bfd_boolean *pneeded) |
3463 | { | |
0e144ba7 AM |
3464 | bfd *oldbfd; |
3465 | bfd_boolean needed; | |
5d3236ee | 3466 | |
0e144ba7 | 3467 | if (!aout_get_external_symbols (abfd)) |
116c20d2 NC |
3468 | return FALSE; |
3469 | ||
0e144ba7 AM |
3470 | oldbfd = abfd; |
3471 | if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd)) | |
116c20d2 NC |
3472 | return FALSE; |
3473 | ||
0e144ba7 AM |
3474 | needed = *pneeded; |
3475 | if (needed) | |
116c20d2 | 3476 | { |
5d3236ee DK |
3477 | /* Potentially, the add_archive_element hook may have set a |
3478 | substitute BFD for us. */ | |
0e144ba7 AM |
3479 | if (abfd != oldbfd) |
3480 | { | |
3481 | if (!info->keep_memory | |
3482 | && !aout_link_free_symbols (oldbfd)) | |
3483 | return FALSE; | |
3484 | if (!aout_get_external_symbols (abfd)) | |
3485 | return FALSE; | |
3486 | } | |
3487 | if (!aout_link_add_symbols (abfd, info)) | |
116c20d2 NC |
3488 | return FALSE; |
3489 | } | |
3490 | ||
0e144ba7 | 3491 | if (!info->keep_memory || !needed) |
116c20d2 | 3492 | { |
0e144ba7 | 3493 | if (!aout_link_free_symbols (abfd)) |
116c20d2 NC |
3494 | return FALSE; |
3495 | } | |
3496 | ||
3497 | return TRUE; | |
3498 | } | |
3499 | ||
3500 | /* Given an a.out BFD, add symbols to the global hash table as | |
3501 | appropriate. */ | |
3502 | ||
3503 | bfd_boolean | |
3504 | NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info) | |
3505 | { | |
3506 | switch (bfd_get_format (abfd)) | |
3507 | { | |
3508 | case bfd_object: | |
3509 | return aout_link_add_object_symbols (abfd, info); | |
3510 | case bfd_archive: | |
3511 | return _bfd_generic_link_add_archive_symbols | |
3512 | (abfd, info, aout_link_check_archive_element); | |
3513 | default: | |
3514 | bfd_set_error (bfd_error_wrong_format); | |
3515 | return FALSE; | |
3516 | } | |
3517 | } | |
3518 | \f | |
3519 | /* A hash table used for header files with N_BINCL entries. */ | |
3520 | ||
3521 | struct aout_link_includes_table | |
3522 | { | |
3523 | struct bfd_hash_table root; | |
3524 | }; | |
3525 | ||
3526 | /* A linked list of totals that we have found for a particular header | |
3527 | file. */ | |
3528 | ||
3529 | struct aout_link_includes_totals | |
3530 | { | |
3531 | struct aout_link_includes_totals *next; | |
3532 | bfd_vma total; | |
3533 | }; | |
3534 | ||
3535 | /* An entry in the header file hash table. */ | |
3536 | ||
3537 | struct aout_link_includes_entry | |
3538 | { | |
3539 | struct bfd_hash_entry root; | |
3540 | /* List of totals we have found for this file. */ | |
3541 | struct aout_link_includes_totals *totals; | |
3542 | }; | |
3543 | ||
3544 | /* Look up an entry in an the header file hash table. */ | |
3545 | ||
3546 | #define aout_link_includes_lookup(table, string, create, copy) \ | |
3547 | ((struct aout_link_includes_entry *) \ | |
3548 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
3549 | ||
3550 | /* During the final link step we need to pass around a bunch of | |
3551 | information, so we do it in an instance of this structure. */ | |
3552 | ||
3553 | struct aout_final_link_info | |
3554 | { | |
3555 | /* General link information. */ | |
3556 | struct bfd_link_info *info; | |
3557 | /* Output bfd. */ | |
252b5132 RH |
3558 | bfd *output_bfd; |
3559 | /* Reloc file positions. */ | |
3560 | file_ptr treloff, dreloff; | |
3561 | /* File position of symbols. */ | |
3562 | file_ptr symoff; | |
3563 | /* String table. */ | |
3564 | struct bfd_strtab_hash *strtab; | |
3565 | /* Header file hash table. */ | |
3566 | struct aout_link_includes_table includes; | |
3567 | /* A buffer large enough to hold the contents of any section. */ | |
3568 | bfd_byte *contents; | |
3569 | /* A buffer large enough to hold the relocs of any section. */ | |
116c20d2 | 3570 | void * relocs; |
252b5132 RH |
3571 | /* A buffer large enough to hold the symbol map of any input BFD. */ |
3572 | int *symbol_map; | |
3573 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
3574 | struct external_nlist *output_syms; | |
3575 | }; | |
3576 | ||
252b5132 RH |
3577 | /* The function to create a new entry in the header file hash table. */ |
3578 | ||
3579 | static struct bfd_hash_entry * | |
116c20d2 NC |
3580 | aout_link_includes_newfunc (struct bfd_hash_entry *entry, |
3581 | struct bfd_hash_table *table, | |
3582 | const char *string) | |
252b5132 RH |
3583 | { |
3584 | struct aout_link_includes_entry *ret = | |
3585 | (struct aout_link_includes_entry *) entry; | |
3586 | ||
3587 | /* Allocate the structure if it has not already been allocated by a | |
3588 | subclass. */ | |
116c20d2 | 3589 | if (ret == NULL) |
a50b1753 | 3590 | ret = (struct aout_link_includes_entry *) |
07d6d2b8 | 3591 | bfd_hash_allocate (table, sizeof (* ret)); |
116c20d2 NC |
3592 | if (ret == NULL) |
3593 | return NULL; | |
252b5132 RH |
3594 | |
3595 | /* Call the allocation method of the superclass. */ | |
3596 | ret = ((struct aout_link_includes_entry *) | |
3597 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
3598 | if (ret) | |
3599 | { | |
3600 | /* Set local fields. */ | |
3601 | ret->totals = NULL; | |
3602 | } | |
3603 | ||
3604 | return (struct bfd_hash_entry *) ret; | |
3605 | } | |
3606 | ||
116c20d2 NC |
3607 | /* Write out a symbol that was not associated with an a.out input |
3608 | object. */ | |
252b5132 | 3609 | |
116c20d2 | 3610 | static bfd_boolean |
7686d77d | 3611 | aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data) |
252b5132 | 3612 | { |
7686d77d | 3613 | struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh; |
57402f1e | 3614 | struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data; |
116c20d2 NC |
3615 | bfd *output_bfd; |
3616 | int type; | |
3617 | bfd_vma val; | |
3618 | struct external_nlist outsym; | |
3619 | bfd_size_type indx; | |
986f0783 | 3620 | size_t amt; |
252b5132 | 3621 | |
116c20d2 NC |
3622 | if (h->root.type == bfd_link_hash_warning) |
3623 | { | |
3624 | h = (struct aout_link_hash_entry *) h->root.u.i.link; | |
3625 | if (h->root.type == bfd_link_hash_new) | |
3626 | return TRUE; | |
3627 | } | |
252b5132 | 3628 | |
57402f1e | 3629 | output_bfd = flaginfo->output_bfd; |
252b5132 | 3630 | |
116c20d2 | 3631 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) |
252b5132 | 3632 | { |
116c20d2 | 3633 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) |
57402f1e | 3634 | (output_bfd, flaginfo->info, h))) |
252b5132 | 3635 | { |
116c20d2 NC |
3636 | /* FIXME: No way to handle errors. */ |
3637 | abort (); | |
252b5132 | 3638 | } |
116c20d2 | 3639 | } |
252b5132 | 3640 | |
116c20d2 NC |
3641 | if (h->written) |
3642 | return TRUE; | |
252b5132 | 3643 | |
116c20d2 | 3644 | h->written = TRUE; |
252b5132 | 3645 | |
116c20d2 NC |
3646 | /* An indx of -2 means the symbol must be written. */ |
3647 | if (h->indx != -2 | |
57402f1e NC |
3648 | && (flaginfo->info->strip == strip_all |
3649 | || (flaginfo->info->strip == strip_some | |
3650 | && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string, | |
116c20d2 NC |
3651 | FALSE, FALSE) == NULL))) |
3652 | return TRUE; | |
252b5132 | 3653 | |
116c20d2 | 3654 | switch (h->root.type) |
252b5132 | 3655 | { |
116c20d2 NC |
3656 | default: |
3657 | case bfd_link_hash_warning: | |
3658 | abort (); | |
3659 | /* Avoid variable not initialized warnings. */ | |
3660 | return TRUE; | |
3661 | case bfd_link_hash_new: | |
3662 | /* This can happen for set symbols when sets are not being | |
07d6d2b8 | 3663 | built. */ |
116c20d2 NC |
3664 | return TRUE; |
3665 | case bfd_link_hash_undefined: | |
3666 | type = N_UNDF | N_EXT; | |
3667 | val = 0; | |
3668 | break; | |
3669 | case bfd_link_hash_defined: | |
3670 | case bfd_link_hash_defweak: | |
3671 | { | |
3672 | asection *sec; | |
252b5132 | 3673 | |
116c20d2 NC |
3674 | sec = h->root.u.def.section->output_section; |
3675 | BFD_ASSERT (bfd_is_abs_section (sec) | |
3676 | || sec->owner == output_bfd); | |
3677 | if (sec == obj_textsec (output_bfd)) | |
3678 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; | |
3679 | else if (sec == obj_datasec (output_bfd)) | |
3680 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; | |
3681 | else if (sec == obj_bsssec (output_bfd)) | |
3682 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; | |
3683 | else | |
3684 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; | |
3685 | type |= N_EXT; | |
3686 | val = (h->root.u.def.value | |
3687 | + sec->vma | |
3688 | + h->root.u.def.section->output_offset); | |
3689 | } | |
3690 | break; | |
3691 | case bfd_link_hash_common: | |
3692 | type = N_UNDF | N_EXT; | |
3693 | val = h->root.u.c.size; | |
3694 | break; | |
3695 | case bfd_link_hash_undefweak: | |
3696 | type = N_WEAKU; | |
3697 | val = 0; | |
c38eb2a6 | 3698 | break; |
116c20d2 NC |
3699 | case bfd_link_hash_indirect: |
3700 | /* We ignore these symbols, since the indirected symbol is | |
3701 | already in the hash table. */ | |
3702 | return TRUE; | |
3703 | } | |
252b5132 | 3704 | |
116c20d2 NC |
3705 | H_PUT_8 (output_bfd, type, outsym.e_type); |
3706 | H_PUT_8 (output_bfd, 0, outsym.e_other); | |
3707 | H_PUT_16 (output_bfd, 0, outsym.e_desc); | |
57402f1e | 3708 | indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string, |
116c20d2 NC |
3709 | FALSE); |
3710 | if (indx == - (bfd_size_type) 1) | |
3711 | /* FIXME: No way to handle errors. */ | |
3712 | abort (); | |
252b5132 | 3713 | |
116c20d2 NC |
3714 | PUT_WORD (output_bfd, indx, outsym.e_strx); |
3715 | PUT_WORD (output_bfd, val, outsym.e_value); | |
252b5132 | 3716 | |
116c20d2 | 3717 | amt = EXTERNAL_NLIST_SIZE; |
57402f1e | 3718 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0 |
116c20d2 NC |
3719 | || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt) |
3720 | /* FIXME: No way to handle errors. */ | |
3721 | abort (); | |
252b5132 | 3722 | |
57402f1e | 3723 | flaginfo->symoff += EXTERNAL_NLIST_SIZE; |
116c20d2 NC |
3724 | h->indx = obj_aout_external_sym_count (output_bfd); |
3725 | ++obj_aout_external_sym_count (output_bfd); | |
252b5132 | 3726 | |
116c20d2 NC |
3727 | return TRUE; |
3728 | } | |
252b5132 | 3729 | |
116c20d2 | 3730 | /* Handle a link order which is supposed to generate a reloc. */ |
252b5132 | 3731 | |
116c20d2 | 3732 | static bfd_boolean |
57402f1e | 3733 | aout_link_reloc_link_order (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3734 | asection *o, |
3735 | struct bfd_link_order *p) | |
3736 | { | |
3737 | struct bfd_link_order_reloc *pr; | |
3738 | int r_index; | |
3739 | int r_extern; | |
3740 | reloc_howto_type *howto; | |
3741 | file_ptr *reloff_ptr = NULL; | |
3742 | struct reloc_std_external srel; | |
3743 | struct reloc_ext_external erel; | |
3744 | void * rel_ptr; | |
986f0783 | 3745 | size_t amt; |
252b5132 | 3746 | |
116c20d2 | 3747 | pr = p->u.reloc.p; |
252b5132 | 3748 | |
116c20d2 NC |
3749 | if (p->type == bfd_section_reloc_link_order) |
3750 | { | |
3751 | r_extern = 0; | |
3752 | if (bfd_is_abs_section (pr->u.section)) | |
3753 | r_index = N_ABS | N_EXT; | |
3754 | else | |
3755 | { | |
57402f1e | 3756 | BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd); |
116c20d2 NC |
3757 | r_index = pr->u.section->target_index; |
3758 | } | |
3759 | } | |
3760 | else | |
3761 | { | |
3762 | struct aout_link_hash_entry *h; | |
252b5132 | 3763 | |
116c20d2 NC |
3764 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); |
3765 | r_extern = 1; | |
3766 | h = ((struct aout_link_hash_entry *) | |
57402f1e | 3767 | bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info, |
116c20d2 NC |
3768 | pr->u.name, FALSE, FALSE, TRUE)); |
3769 | if (h != NULL | |
3770 | && h->indx >= 0) | |
3771 | r_index = h->indx; | |
3772 | else if (h != NULL) | |
3773 | { | |
3774 | /* We decided to strip this symbol, but it turns out that we | |
3775 | can't. Note that we lose the other and desc information | |
3776 | here. I don't think that will ever matter for a global | |
3777 | symbol. */ | |
3778 | h->indx = -2; | |
3779 | h->written = FALSE; | |
57402f1e | 3780 | if (!aout_link_write_other_symbol (&h->root.root, flaginfo)) |
116c20d2 NC |
3781 | return FALSE; |
3782 | r_index = h->indx; | |
3783 | } | |
3784 | else | |
3785 | { | |
1a72702b AM |
3786 | (*flaginfo->info->callbacks->unattached_reloc) |
3787 | (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0); | |
116c20d2 NC |
3788 | r_index = 0; |
3789 | } | |
3790 | } | |
252b5132 | 3791 | |
57402f1e | 3792 | howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc); |
116c20d2 | 3793 | if (howto == 0) |
252b5132 | 3794 | { |
116c20d2 NC |
3795 | bfd_set_error (bfd_error_bad_value); |
3796 | return FALSE; | |
252b5132 RH |
3797 | } |
3798 | ||
57402f1e NC |
3799 | if (o == obj_textsec (flaginfo->output_bfd)) |
3800 | reloff_ptr = &flaginfo->treloff; | |
3801 | else if (o == obj_datasec (flaginfo->output_bfd)) | |
3802 | reloff_ptr = &flaginfo->dreloff; | |
116c20d2 NC |
3803 | else |
3804 | abort (); | |
3805 | ||
57402f1e | 3806 | if (obj_reloc_entry_size (flaginfo->output_bfd) == RELOC_STD_SIZE) |
252b5132 | 3807 | { |
116c20d2 | 3808 | #ifdef MY_put_reloc |
57402f1e | 3809 | MY_put_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, howto, |
116c20d2 NC |
3810 | &srel); |
3811 | #else | |
3812 | { | |
3813 | int r_pcrel; | |
3814 | int r_baserel; | |
3815 | int r_jmptable; | |
3816 | int r_relative; | |
3817 | int r_length; | |
252b5132 | 3818 | |
116c20d2 NC |
3819 | r_pcrel = (int) howto->pc_relative; |
3820 | r_baserel = (howto->type & 8) != 0; | |
3821 | r_jmptable = (howto->type & 16) != 0; | |
3822 | r_relative = (howto->type & 32) != 0; | |
3823 | r_length = howto->size; | |
252b5132 | 3824 | |
57402f1e NC |
3825 | PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address); |
3826 | if (bfd_header_big_endian (flaginfo->output_bfd)) | |
116c20d2 NC |
3827 | { |
3828 | srel.r_index[0] = r_index >> 16; | |
3829 | srel.r_index[1] = r_index >> 8; | |
3830 | srel.r_index[2] = r_index; | |
3831 | srel.r_type[0] = | |
3832 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
3833 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
3834 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
3835 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
3836 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
3837 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
3838 | } | |
3839 | else | |
3840 | { | |
3841 | srel.r_index[2] = r_index >> 16; | |
3842 | srel.r_index[1] = r_index >> 8; | |
3843 | srel.r_index[0] = r_index; | |
3844 | srel.r_type[0] = | |
3845 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
3846 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
3847 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
3848 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
3849 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
3850 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
3851 | } | |
3852 | } | |
3853 | #endif | |
3854 | rel_ptr = (void *) &srel; | |
252b5132 | 3855 | |
116c20d2 NC |
3856 | /* We have to write the addend into the object file, since |
3857 | standard a.out relocs are in place. It would be more | |
3858 | reliable if we had the current contents of the file here, | |
3859 | rather than assuming zeroes, but we can't read the file since | |
3860 | it was opened using bfd_openw. */ | |
3861 | if (pr->addend != 0) | |
252b5132 | 3862 | { |
116c20d2 NC |
3863 | bfd_size_type size; |
3864 | bfd_reloc_status_type r; | |
3865 | bfd_byte *buf; | |
3866 | bfd_boolean ok; | |
3867 | ||
3868 | size = bfd_get_reloc_size (howto); | |
a50b1753 | 3869 | buf = (bfd_byte *) bfd_zmalloc (size); |
6346d5ca | 3870 | if (buf == NULL && size != 0) |
116c20d2 | 3871 | return FALSE; |
57402f1e | 3872 | r = MY_relocate_contents (howto, flaginfo->output_bfd, |
116c20d2 NC |
3873 | (bfd_vma) pr->addend, buf); |
3874 | switch (r) | |
252b5132 | 3875 | { |
116c20d2 NC |
3876 | case bfd_reloc_ok: |
3877 | break; | |
3878 | default: | |
3879 | case bfd_reloc_outofrange: | |
3880 | abort (); | |
3881 | case bfd_reloc_overflow: | |
1a72702b AM |
3882 | (*flaginfo->info->callbacks->reloc_overflow) |
3883 | (flaginfo->info, NULL, | |
3884 | (p->type == bfd_section_reloc_link_order | |
fd361982 | 3885 | ? bfd_section_name (pr->u.section) |
1a72702b AM |
3886 | : pr->u.name), |
3887 | howto->name, pr->addend, NULL, NULL, (bfd_vma) 0); | |
116c20d2 | 3888 | break; |
252b5132 | 3889 | } |
57402f1e | 3890 | ok = bfd_set_section_contents (flaginfo->output_bfd, o, (void *) buf, |
116c20d2 NC |
3891 | (file_ptr) p->offset, size); |
3892 | free (buf); | |
3893 | if (! ok) | |
3894 | return FALSE; | |
252b5132 RH |
3895 | } |
3896 | } | |
116c20d2 | 3897 | else |
252b5132 | 3898 | { |
116c20d2 | 3899 | #ifdef MY_put_ext_reloc |
57402f1e | 3900 | MY_put_ext_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, |
116c20d2 NC |
3901 | howto, &erel, pr->addend); |
3902 | #else | |
57402f1e | 3903 | PUT_WORD (flaginfo->output_bfd, p->offset, erel.r_address); |
252b5132 | 3904 | |
57402f1e | 3905 | if (bfd_header_big_endian (flaginfo->output_bfd)) |
116c20d2 NC |
3906 | { |
3907 | erel.r_index[0] = r_index >> 16; | |
3908 | erel.r_index[1] = r_index >> 8; | |
3909 | erel.r_index[2] = r_index; | |
3910 | erel.r_type[0] = | |
3911 | ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
3912 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
3913 | } | |
3914 | else | |
3915 | { | |
3916 | erel.r_index[2] = r_index >> 16; | |
3917 | erel.r_index[1] = r_index >> 8; | |
3918 | erel.r_index[0] = r_index; | |
3919 | erel.r_type[0] = | |
3920 | (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
3921 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
3922 | } | |
252b5132 | 3923 | |
57402f1e | 3924 | PUT_WORD (flaginfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend); |
116c20d2 | 3925 | #endif /* MY_put_ext_reloc */ |
252b5132 | 3926 | |
116c20d2 | 3927 | rel_ptr = (void *) &erel; |
252b5132 | 3928 | } |
252b5132 | 3929 | |
57402f1e NC |
3930 | amt = obj_reloc_entry_size (flaginfo->output_bfd); |
3931 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 | |
3932 | || bfd_bwrite (rel_ptr, amt, flaginfo->output_bfd) != amt) | |
116c20d2 | 3933 | return FALSE; |
252b5132 | 3934 | |
57402f1e | 3935 | *reloff_ptr += obj_reloc_entry_size (flaginfo->output_bfd); |
252b5132 | 3936 | |
116c20d2 NC |
3937 | /* Assert that the relocs have not run into the symbols, and that n |
3938 | the text relocs have not run into the data relocs. */ | |
57402f1e NC |
3939 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
3940 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 3941 | || (*reloff_ptr |
57402f1e | 3942 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
116c20d2 NC |
3943 | |
3944 | return TRUE; | |
252b5132 RH |
3945 | } |
3946 | ||
116c20d2 | 3947 | /* Get the section corresponding to a reloc index. */ |
252b5132 | 3948 | |
116c20d2 NC |
3949 | static INLINE asection * |
3950 | aout_reloc_index_to_section (bfd *abfd, int indx) | |
252b5132 | 3951 | { |
116c20d2 | 3952 | switch (indx & N_TYPE) |
252b5132 | 3953 | { |
116c20d2 NC |
3954 | case N_TEXT: return obj_textsec (abfd); |
3955 | case N_DATA: return obj_datasec (abfd); | |
3956 | case N_BSS: return obj_bsssec (abfd); | |
3957 | case N_ABS: | |
3958 | case N_UNDF: return bfd_abs_section_ptr; | |
3959 | default: abort (); | |
252b5132 | 3960 | } |
116c20d2 | 3961 | return NULL; |
252b5132 RH |
3962 | } |
3963 | ||
116c20d2 | 3964 | /* Relocate an a.out section using standard a.out relocs. */ |
252b5132 | 3965 | |
b34976b6 | 3966 | static bfd_boolean |
57402f1e | 3967 | aout_link_input_section_std (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3968 | bfd *input_bfd, |
3969 | asection *input_section, | |
3970 | struct reloc_std_external *relocs, | |
3971 | bfd_size_type rel_size, | |
3972 | bfd_byte *contents) | |
252b5132 | 3973 | { |
116c20d2 NC |
3974 | bfd_boolean (*check_dynamic_reloc) |
3975 | (struct bfd_link_info *, bfd *, asection *, | |
3976 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
3977 | bfd_vma *); | |
252b5132 | 3978 | bfd *output_bfd; |
116c20d2 NC |
3979 | bfd_boolean relocatable; |
3980 | struct external_nlist *syms; | |
252b5132 | 3981 | char *strings; |
116c20d2 | 3982 | struct aout_link_hash_entry **sym_hashes; |
252b5132 | 3983 | int *symbol_map; |
116c20d2 NC |
3984 | bfd_size_type reloc_count; |
3985 | struct reloc_std_external *rel; | |
3986 | struct reloc_std_external *rel_end; | |
252b5132 | 3987 | |
57402f1e | 3988 | output_bfd = flaginfo->output_bfd; |
116c20d2 | 3989 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
252b5132 | 3990 | |
116c20d2 NC |
3991 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE); |
3992 | BFD_ASSERT (input_bfd->xvec->header_byteorder | |
3993 | == output_bfd->xvec->header_byteorder); | |
252b5132 | 3994 | |
0e1862bb | 3995 | relocatable = bfd_link_relocatable (flaginfo->info); |
116c20d2 NC |
3996 | syms = obj_aout_external_syms (input_bfd); |
3997 | strings = obj_aout_external_strings (input_bfd); | |
3998 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 3999 | symbol_map = flaginfo->symbol_map; |
116c20d2 NC |
4000 | |
4001 | reloc_count = rel_size / RELOC_STD_SIZE; | |
4002 | rel = relocs; | |
4003 | rel_end = rel + reloc_count; | |
4004 | for (; rel < rel_end; rel++) | |
252b5132 | 4005 | { |
116c20d2 NC |
4006 | bfd_vma r_addr; |
4007 | int r_index; | |
4008 | int r_extern; | |
4009 | int r_pcrel; | |
4010 | int r_baserel = 0; | |
4011 | reloc_howto_type *howto; | |
4012 | struct aout_link_hash_entry *h = NULL; | |
4013 | bfd_vma relocation; | |
4014 | bfd_reloc_status_type r; | |
252b5132 | 4015 | |
116c20d2 | 4016 | r_addr = GET_SWORD (input_bfd, rel->r_address); |
252b5132 | 4017 | |
116c20d2 NC |
4018 | #ifdef MY_reloc_howto |
4019 | howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel); | |
4020 | #else | |
4021 | { | |
4022 | int r_jmptable; | |
4023 | int r_relative; | |
4024 | int r_length; | |
4025 | unsigned int howto_idx; | |
252b5132 | 4026 | |
116c20d2 NC |
4027 | if (bfd_header_big_endian (input_bfd)) |
4028 | { | |
4029 | r_index = (((unsigned int) rel->r_index[0] << 16) | |
4030 | | ((unsigned int) rel->r_index[1] << 8) | |
4031 | | rel->r_index[2]); | |
4032 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
4033 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
4034 | r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
4035 | r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
4036 | r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
4037 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
4038 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
4039 | } | |
4040 | else | |
4041 | { | |
4042 | r_index = (((unsigned int) rel->r_index[2] << 16) | |
4043 | | ((unsigned int) rel->r_index[1] << 8) | |
4044 | | rel->r_index[0]); | |
4045 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
4046 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
4047 | r_baserel = (0 != (rel->r_type[0] | |
4048 | & RELOC_STD_BITS_BASEREL_LITTLE)); | |
4049 | r_jmptable= (0 != (rel->r_type[0] | |
4050 | & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
4051 | r_relative= (0 != (rel->r_type[0] | |
4052 | & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
4053 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
4054 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
4055 | } | |
252b5132 | 4056 | |
116c20d2 NC |
4057 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel |
4058 | + 16 * r_jmptable + 32 * r_relative); | |
ad756e3f AM |
4059 | if (howto_idx < TABLE_SIZE (howto_table_std)) |
4060 | howto = howto_table_std + howto_idx; | |
4061 | else | |
4062 | howto = NULL; | |
116c20d2 NC |
4063 | } |
4064 | #endif | |
252b5132 | 4065 | |
ad756e3f AM |
4066 | if (howto == NULL) |
4067 | { | |
0aa13fee AM |
4068 | _bfd_error_handler (_("%pB: unsupported relocation type"), |
4069 | input_bfd); | |
ad756e3f AM |
4070 | bfd_set_error (bfd_error_bad_value); |
4071 | return FALSE; | |
4072 | } | |
4073 | ||
116c20d2 | 4074 | if (relocatable) |
252b5132 | 4075 | { |
116c20d2 NC |
4076 | /* We are generating a relocatable output file, and must |
4077 | modify the reloc accordingly. */ | |
4078 | if (r_extern) | |
252b5132 | 4079 | { |
116c20d2 NC |
4080 | /* If we know the symbol this relocation is against, |
4081 | convert it into a relocation against a section. This | |
4082 | is what the native linker does. */ | |
4083 | h = sym_hashes[r_index]; | |
4084 | if (h != NULL | |
4085 | && (h->root.type == bfd_link_hash_defined | |
4086 | || h->root.type == bfd_link_hash_defweak)) | |
252b5132 | 4087 | { |
252b5132 RH |
4088 | asection *output_section; |
4089 | ||
116c20d2 NC |
4090 | /* Change the r_extern value. */ |
4091 | if (bfd_header_big_endian (output_bfd)) | |
4092 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG; | |
4093 | else | |
4094 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE; | |
252b5132 | 4095 | |
116c20d2 NC |
4096 | /* Compute a new r_index. */ |
4097 | output_section = h->root.u.def.section->output_section; | |
252b5132 | 4098 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 | 4099 | r_index = N_TEXT; |
252b5132 | 4100 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 | 4101 | r_index = N_DATA; |
252b5132 | 4102 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 | 4103 | r_index = N_BSS; |
252b5132 | 4104 | else |
116c20d2 | 4105 | r_index = N_ABS; |
252b5132 | 4106 | |
116c20d2 NC |
4107 | /* Add the symbol value and the section VMA to the |
4108 | addend stored in the contents. */ | |
4109 | relocation = (h->root.u.def.value | |
4110 | + output_section->vma | |
4111 | + h->root.u.def.section->output_offset); | |
252b5132 | 4112 | } |
116c20d2 | 4113 | else |
252b5132 | 4114 | { |
116c20d2 NC |
4115 | /* We must change r_index according to the symbol |
4116 | map. */ | |
4117 | r_index = symbol_map[r_index]; | |
252b5132 | 4118 | |
116c20d2 | 4119 | if (r_index == -1) |
252b5132 | 4120 | { |
116c20d2 | 4121 | if (h != NULL) |
252b5132 | 4122 | { |
116c20d2 | 4123 | /* We decided to strip this symbol, but it |
07d6d2b8 AM |
4124 | turns out that we can't. Note that we |
4125 | lose the other and desc information here. | |
4126 | I don't think that will ever matter for a | |
4127 | global symbol. */ | |
116c20d2 | 4128 | if (h->indx < 0) |
252b5132 | 4129 | { |
116c20d2 NC |
4130 | h->indx = -2; |
4131 | h->written = FALSE; | |
7686d77d | 4132 | if (!aout_link_write_other_symbol (&h->root.root, |
57402f1e | 4133 | flaginfo)) |
116c20d2 | 4134 | return FALSE; |
252b5132 | 4135 | } |
116c20d2 NC |
4136 | r_index = h->indx; |
4137 | } | |
4138 | else | |
4139 | { | |
4140 | const char *name; | |
4141 | ||
4142 | name = strings + GET_WORD (input_bfd, | |
4143 | syms[r_index].e_strx); | |
1a72702b AM |
4144 | (*flaginfo->info->callbacks->unattached_reloc) |
4145 | (flaginfo->info, name, | |
4146 | input_bfd, input_section, r_addr); | |
116c20d2 | 4147 | r_index = 0; |
252b5132 RH |
4148 | } |
4149 | } | |
116c20d2 NC |
4150 | |
4151 | relocation = 0; | |
252b5132 RH |
4152 | } |
4153 | ||
116c20d2 NC |
4154 | /* Write out the new r_index value. */ |
4155 | if (bfd_header_big_endian (output_bfd)) | |
252b5132 | 4156 | { |
116c20d2 NC |
4157 | rel->r_index[0] = r_index >> 16; |
4158 | rel->r_index[1] = r_index >> 8; | |
4159 | rel->r_index[2] = r_index; | |
252b5132 RH |
4160 | } |
4161 | else | |
4162 | { | |
116c20d2 NC |
4163 | rel->r_index[2] = r_index >> 16; |
4164 | rel->r_index[1] = r_index >> 8; | |
4165 | rel->r_index[0] = r_index; | |
252b5132 RH |
4166 | } |
4167 | } | |
252b5132 | 4168 | else |
116c20d2 NC |
4169 | { |
4170 | asection *section; | |
252b5132 | 4171 | |
116c20d2 NC |
4172 | /* This is a relocation against a section. We must |
4173 | adjust by the amount that the section moved. */ | |
4174 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4175 | relocation = (section->output_section->vma | |
4176 | + section->output_offset | |
4177 | - section->vma); | |
4178 | } | |
252b5132 | 4179 | |
116c20d2 NC |
4180 | /* Change the address of the relocation. */ |
4181 | PUT_WORD (output_bfd, | |
4182 | r_addr + input_section->output_offset, | |
4183 | rel->r_address); | |
252b5132 | 4184 | |
116c20d2 NC |
4185 | /* Adjust a PC relative relocation by removing the reference |
4186 | to the original address in the section and including the | |
4187 | reference to the new address. */ | |
4188 | if (r_pcrel) | |
4189 | relocation -= (input_section->output_section->vma | |
4190 | + input_section->output_offset | |
4191 | - input_section->vma); | |
e92d460e | 4192 | |
116c20d2 NC |
4193 | #ifdef MY_relocatable_reloc |
4194 | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); | |
4195 | #endif | |
252b5132 | 4196 | |
116c20d2 NC |
4197 | if (relocation == 0) |
4198 | r = bfd_reloc_ok; | |
4199 | else | |
4200 | r = MY_relocate_contents (howto, | |
4201 | input_bfd, relocation, | |
4202 | contents + r_addr); | |
252b5132 | 4203 | } |
116c20d2 NC |
4204 | else |
4205 | { | |
4206 | bfd_boolean hundef; | |
252b5132 | 4207 | |
116c20d2 NC |
4208 | /* We are generating an executable, and must do a full |
4209 | relocation. */ | |
4210 | hundef = FALSE; | |
252b5132 | 4211 | |
116c20d2 NC |
4212 | if (r_extern) |
4213 | { | |
4214 | h = sym_hashes[r_index]; | |
252b5132 | 4215 | |
116c20d2 NC |
4216 | if (h != NULL |
4217 | && (h->root.type == bfd_link_hash_defined | |
4218 | || h->root.type == bfd_link_hash_defweak)) | |
4219 | { | |
4220 | relocation = (h->root.u.def.value | |
4221 | + h->root.u.def.section->output_section->vma | |
4222 | + h->root.u.def.section->output_offset); | |
4223 | } | |
4224 | else if (h != NULL | |
4225 | && h->root.type == bfd_link_hash_undefweak) | |
4226 | relocation = 0; | |
4227 | else | |
4228 | { | |
4229 | hundef = TRUE; | |
4230 | relocation = 0; | |
4231 | } | |
4232 | } | |
4233 | else | |
4234 | { | |
4235 | asection *section; | |
252b5132 | 4236 | |
116c20d2 NC |
4237 | section = aout_reloc_index_to_section (input_bfd, r_index); |
4238 | relocation = (section->output_section->vma | |
4239 | + section->output_offset | |
4240 | - section->vma); | |
4241 | if (r_pcrel) | |
4242 | relocation += input_section->vma; | |
4243 | } | |
252b5132 | 4244 | |
116c20d2 NC |
4245 | if (check_dynamic_reloc != NULL) |
4246 | { | |
4247 | bfd_boolean skip; | |
252b5132 | 4248 | |
116c20d2 | 4249 | if (! ((*check_dynamic_reloc) |
57402f1e | 4250 | (flaginfo->info, input_bfd, input_section, h, |
116c20d2 NC |
4251 | (void *) rel, contents, &skip, &relocation))) |
4252 | return FALSE; | |
4253 | if (skip) | |
4254 | continue; | |
4255 | } | |
252b5132 | 4256 | |
116c20d2 | 4257 | /* Now warn if a global symbol is undefined. We could not |
07d6d2b8 AM |
4258 | do this earlier, because check_dynamic_reloc might want |
4259 | to skip this reloc. */ | |
0e1862bb | 4260 | if (hundef && ! bfd_link_pic (flaginfo->info) && ! r_baserel) |
116c20d2 NC |
4261 | { |
4262 | const char *name; | |
252b5132 | 4263 | |
116c20d2 NC |
4264 | if (h != NULL) |
4265 | name = h->root.root.string; | |
4266 | else | |
4267 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
1a72702b AM |
4268 | (*flaginfo->info->callbacks->undefined_symbol) |
4269 | (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE); | |
116c20d2 | 4270 | } |
252b5132 | 4271 | |
116c20d2 NC |
4272 | r = MY_final_link_relocate (howto, |
4273 | input_bfd, input_section, | |
4274 | contents, r_addr, relocation, | |
4275 | (bfd_vma) 0); | |
252b5132 | 4276 | } |
252b5132 | 4277 | |
116c20d2 NC |
4278 | if (r != bfd_reloc_ok) |
4279 | { | |
4280 | switch (r) | |
4281 | { | |
4282 | default: | |
4283 | case bfd_reloc_outofrange: | |
4284 | abort (); | |
4285 | case bfd_reloc_overflow: | |
4286 | { | |
4287 | const char *name; | |
252b5132 | 4288 | |
116c20d2 NC |
4289 | if (h != NULL) |
4290 | name = NULL; | |
4291 | else if (r_extern) | |
4292 | name = strings + GET_WORD (input_bfd, | |
4293 | syms[r_index].e_strx); | |
4294 | else | |
4295 | { | |
4296 | asection *s; | |
252b5132 | 4297 | |
116c20d2 | 4298 | s = aout_reloc_index_to_section (input_bfd, r_index); |
fd361982 | 4299 | name = bfd_section_name (s); |
116c20d2 | 4300 | } |
1a72702b AM |
4301 | (*flaginfo->info->callbacks->reloc_overflow) |
4302 | (flaginfo->info, (h ? &h->root : NULL), name, howto->name, | |
4303 | (bfd_vma) 0, input_bfd, input_section, r_addr); | |
116c20d2 NC |
4304 | } |
4305 | break; | |
4306 | } | |
4307 | } | |
252b5132 RH |
4308 | } |
4309 | ||
b34976b6 | 4310 | return TRUE; |
252b5132 RH |
4311 | } |
4312 | ||
116c20d2 | 4313 | /* Relocate an a.out section using extended a.out relocs. */ |
252b5132 | 4314 | |
b34976b6 | 4315 | static bfd_boolean |
57402f1e | 4316 | aout_link_input_section_ext (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
4317 | bfd *input_bfd, |
4318 | asection *input_section, | |
4319 | struct reloc_ext_external *relocs, | |
4320 | bfd_size_type rel_size, | |
4321 | bfd_byte *contents) | |
252b5132 | 4322 | { |
b34976b6 | 4323 | bfd_boolean (*check_dynamic_reloc) |
116c20d2 NC |
4324 | (struct bfd_link_info *, bfd *, asection *, |
4325 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
4326 | bfd_vma *); | |
252b5132 | 4327 | bfd *output_bfd; |
1049f94e | 4328 | bfd_boolean relocatable; |
252b5132 RH |
4329 | struct external_nlist *syms; |
4330 | char *strings; | |
4331 | struct aout_link_hash_entry **sym_hashes; | |
4332 | int *symbol_map; | |
4333 | bfd_size_type reloc_count; | |
116c20d2 NC |
4334 | struct reloc_ext_external *rel; |
4335 | struct reloc_ext_external *rel_end; | |
252b5132 | 4336 | |
57402f1e | 4337 | output_bfd = flaginfo->output_bfd; |
252b5132 RH |
4338 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
4339 | ||
116c20d2 | 4340 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE); |
252b5132 RH |
4341 | BFD_ASSERT (input_bfd->xvec->header_byteorder |
4342 | == output_bfd->xvec->header_byteorder); | |
4343 | ||
0e1862bb | 4344 | relocatable = bfd_link_relocatable (flaginfo->info); |
252b5132 RH |
4345 | syms = obj_aout_external_syms (input_bfd); |
4346 | strings = obj_aout_external_strings (input_bfd); | |
4347 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4348 | symbol_map = flaginfo->symbol_map; |
252b5132 | 4349 | |
116c20d2 | 4350 | reloc_count = rel_size / RELOC_EXT_SIZE; |
252b5132 RH |
4351 | rel = relocs; |
4352 | rel_end = rel + reloc_count; | |
4353 | for (; rel < rel_end; rel++) | |
4354 | { | |
4355 | bfd_vma r_addr; | |
4356 | int r_index; | |
4357 | int r_extern; | |
116c20d2 NC |
4358 | unsigned int r_type; |
4359 | bfd_vma r_addend; | |
252b5132 | 4360 | struct aout_link_hash_entry *h = NULL; |
116c20d2 | 4361 | asection *r_section = NULL; |
252b5132 | 4362 | bfd_vma relocation; |
252b5132 RH |
4363 | |
4364 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
4365 | ||
116c20d2 NC |
4366 | if (bfd_header_big_endian (input_bfd)) |
4367 | { | |
4368 | r_index = (((unsigned int) rel->r_index[0] << 16) | |
4369 | | ((unsigned int) rel->r_index[1] << 8) | |
4370 | | rel->r_index[2]); | |
4371 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
4372 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
4373 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
4374 | } | |
4375 | else | |
4376 | { | |
4377 | r_index = (((unsigned int) rel->r_index[2] << 16) | |
4378 | | ((unsigned int) rel->r_index[1] << 8) | |
4379 | | rel->r_index[0]); | |
4380 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
4381 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
4382 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
4383 | } | |
252b5132 | 4384 | |
116c20d2 | 4385 | r_addend = GET_SWORD (input_bfd, rel->r_addend); |
252b5132 | 4386 | |
ad756e3f AM |
4387 | if (r_type >= TABLE_SIZE (howto_table_ext)) |
4388 | { | |
0aa13fee AM |
4389 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4390 | input_bfd, r_type); | |
ad756e3f AM |
4391 | bfd_set_error (bfd_error_bad_value); |
4392 | return FALSE; | |
4393 | } | |
252b5132 | 4394 | |
1049f94e | 4395 | if (relocatable) |
252b5132 | 4396 | { |
1049f94e | 4397 | /* We are generating a relocatable output file, and must |
252b5132 | 4398 | modify the reloc accordingly. */ |
116c20d2 NC |
4399 | if (r_extern |
4400 | || r_type == (unsigned int) RELOC_BASE10 | |
4401 | || r_type == (unsigned int) RELOC_BASE13 | |
4402 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
4403 | { |
4404 | /* If we know the symbol this relocation is against, | |
4405 | convert it into a relocation against a section. This | |
4406 | is what the native linker does. */ | |
116c20d2 NC |
4407 | if (r_type == (unsigned int) RELOC_BASE10 |
4408 | || r_type == (unsigned int) RELOC_BASE13 | |
4409 | || r_type == (unsigned int) RELOC_BASE22) | |
4410 | h = NULL; | |
4411 | else | |
4412 | h = sym_hashes[r_index]; | |
4413 | if (h != NULL | |
252b5132 RH |
4414 | && (h->root.type == bfd_link_hash_defined |
4415 | || h->root.type == bfd_link_hash_defweak)) | |
4416 | { | |
4417 | asection *output_section; | |
4418 | ||
4419 | /* Change the r_extern value. */ | |
4420 | if (bfd_header_big_endian (output_bfd)) | |
116c20d2 | 4421 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG; |
252b5132 | 4422 | else |
116c20d2 | 4423 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE; |
252b5132 RH |
4424 | |
4425 | /* Compute a new r_index. */ | |
4426 | output_section = h->root.u.def.section->output_section; | |
4427 | if (output_section == obj_textsec (output_bfd)) | |
4428 | r_index = N_TEXT; | |
4429 | else if (output_section == obj_datasec (output_bfd)) | |
4430 | r_index = N_DATA; | |
4431 | else if (output_section == obj_bsssec (output_bfd)) | |
4432 | r_index = N_BSS; | |
4433 | else | |
4434 | r_index = N_ABS; | |
4435 | ||
4436 | /* Add the symbol value and the section VMA to the | |
116c20d2 | 4437 | addend. */ |
252b5132 RH |
4438 | relocation = (h->root.u.def.value |
4439 | + output_section->vma | |
4440 | + h->root.u.def.section->output_offset); | |
116c20d2 NC |
4441 | |
4442 | /* Now RELOCATION is the VMA of the final | |
4443 | destination. If this is a PC relative reloc, | |
4444 | then ADDEND is the negative of the source VMA. | |
4445 | We want to set ADDEND to the difference between | |
4446 | the destination VMA and the source VMA, which | |
4447 | means we must adjust RELOCATION by the change in | |
4448 | the source VMA. This is done below. */ | |
252b5132 RH |
4449 | } |
4450 | else | |
4451 | { | |
4452 | /* We must change r_index according to the symbol | |
4453 | map. */ | |
4454 | r_index = symbol_map[r_index]; | |
4455 | ||
4456 | if (r_index == -1) | |
4457 | { | |
4458 | if (h != NULL) | |
4459 | { | |
4460 | /* We decided to strip this symbol, but it | |
07d6d2b8 AM |
4461 | turns out that we can't. Note that we |
4462 | lose the other and desc information here. | |
4463 | I don't think that will ever matter for a | |
4464 | global symbol. */ | |
252b5132 RH |
4465 | if (h->indx < 0) |
4466 | { | |
4467 | h->indx = -2; | |
b34976b6 | 4468 | h->written = FALSE; |
7686d77d | 4469 | if (!aout_link_write_other_symbol (&h->root.root, |
57402f1e | 4470 | flaginfo)) |
b34976b6 | 4471 | return FALSE; |
252b5132 RH |
4472 | } |
4473 | r_index = h->indx; | |
4474 | } | |
4475 | else | |
4476 | { | |
4477 | const char *name; | |
4478 | ||
4479 | name = strings + GET_WORD (input_bfd, | |
4480 | syms[r_index].e_strx); | |
1a72702b AM |
4481 | (*flaginfo->info->callbacks->unattached_reloc) |
4482 | (flaginfo->info, name, | |
4483 | input_bfd, input_section, r_addr); | |
252b5132 RH |
4484 | r_index = 0; |
4485 | } | |
4486 | } | |
4487 | ||
4488 | relocation = 0; | |
116c20d2 NC |
4489 | |
4490 | /* If this is a PC relative reloc, then the addend | |
4491 | is the negative of the source VMA. We must | |
4492 | adjust it by the change in the source VMA. This | |
4493 | is done below. */ | |
252b5132 RH |
4494 | } |
4495 | ||
4496 | /* Write out the new r_index value. */ | |
4497 | if (bfd_header_big_endian (output_bfd)) | |
4498 | { | |
4499 | rel->r_index[0] = r_index >> 16; | |
4500 | rel->r_index[1] = r_index >> 8; | |
4501 | rel->r_index[2] = r_index; | |
4502 | } | |
4503 | else | |
4504 | { | |
4505 | rel->r_index[2] = r_index >> 16; | |
4506 | rel->r_index[1] = r_index >> 8; | |
4507 | rel->r_index[0] = r_index; | |
4508 | } | |
4509 | } | |
4510 | else | |
4511 | { | |
252b5132 RH |
4512 | /* This is a relocation against a section. We must |
4513 | adjust by the amount that the section moved. */ | |
116c20d2 NC |
4514 | r_section = aout_reloc_index_to_section (input_bfd, r_index); |
4515 | relocation = (r_section->output_section->vma | |
4516 | + r_section->output_offset | |
4517 | - r_section->vma); | |
252b5132 | 4518 | |
116c20d2 NC |
4519 | /* If this is a PC relative reloc, then the addend is |
4520 | the difference in VMA between the destination and the | |
4521 | source. We have just adjusted for the change in VMA | |
4522 | of the destination, so we must also adjust by the | |
4523 | change in VMA of the source. This is done below. */ | |
4524 | } | |
252b5132 | 4525 | |
116c20d2 NC |
4526 | /* As described above, we must always adjust a PC relative |
4527 | reloc by the change in VMA of the source. However, if | |
4528 | pcrel_offset is set, then the addend does not include the | |
4529 | location within the section, in which case we don't need | |
4530 | to adjust anything. */ | |
4531 | if (howto_table_ext[r_type].pc_relative | |
4532 | && ! howto_table_ext[r_type].pcrel_offset) | |
252b5132 RH |
4533 | relocation -= (input_section->output_section->vma |
4534 | + input_section->output_offset | |
4535 | - input_section->vma); | |
4536 | ||
116c20d2 NC |
4537 | /* Change the addend if necessary. */ |
4538 | if (relocation != 0) | |
4539 | PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend); | |
252b5132 | 4540 | |
116c20d2 NC |
4541 | /* Change the address of the relocation. */ |
4542 | PUT_WORD (output_bfd, | |
4543 | r_addr + input_section->output_offset, | |
4544 | rel->r_address); | |
252b5132 RH |
4545 | } |
4546 | else | |
4547 | { | |
b34976b6 | 4548 | bfd_boolean hundef; |
116c20d2 | 4549 | bfd_reloc_status_type r; |
252b5132 RH |
4550 | |
4551 | /* We are generating an executable, and must do a full | |
4552 | relocation. */ | |
b34976b6 | 4553 | hundef = FALSE; |
252b5132 RH |
4554 | |
4555 | if (r_extern) | |
4556 | { | |
4557 | h = sym_hashes[r_index]; | |
4558 | ||
116c20d2 | 4559 | if (h != NULL |
252b5132 RH |
4560 | && (h->root.type == bfd_link_hash_defined |
4561 | || h->root.type == bfd_link_hash_defweak)) | |
4562 | { | |
4563 | relocation = (h->root.u.def.value | |
4564 | + h->root.u.def.section->output_section->vma | |
4565 | + h->root.u.def.section->output_offset); | |
4566 | } | |
116c20d2 | 4567 | else if (h != NULL |
252b5132 RH |
4568 | && h->root.type == bfd_link_hash_undefweak) |
4569 | relocation = 0; | |
4570 | else | |
4571 | { | |
b34976b6 | 4572 | hundef = TRUE; |
252b5132 RH |
4573 | relocation = 0; |
4574 | } | |
4575 | } | |
116c20d2 NC |
4576 | else if (r_type == (unsigned int) RELOC_BASE10 |
4577 | || r_type == (unsigned int) RELOC_BASE13 | |
4578 | || r_type == (unsigned int) RELOC_BASE22) | |
4579 | { | |
4580 | struct external_nlist *sym; | |
4581 | int type; | |
4582 | ||
4583 | /* For base relative relocs, r_index is always an index | |
07d6d2b8 | 4584 | into the symbol table, even if r_extern is 0. */ |
116c20d2 NC |
4585 | sym = syms + r_index; |
4586 | type = H_GET_8 (input_bfd, sym->e_type); | |
4587 | if ((type & N_TYPE) == N_TEXT | |
4588 | || type == N_WEAKT) | |
4589 | r_section = obj_textsec (input_bfd); | |
4590 | else if ((type & N_TYPE) == N_DATA | |
4591 | || type == N_WEAKD) | |
4592 | r_section = obj_datasec (input_bfd); | |
4593 | else if ((type & N_TYPE) == N_BSS | |
4594 | || type == N_WEAKB) | |
4595 | r_section = obj_bsssec (input_bfd); | |
4596 | else if ((type & N_TYPE) == N_ABS | |
4597 | || type == N_WEAKA) | |
4598 | r_section = bfd_abs_section_ptr; | |
4599 | else | |
4600 | abort (); | |
4601 | relocation = (r_section->output_section->vma | |
4602 | + r_section->output_offset | |
4603 | + (GET_WORD (input_bfd, sym->e_value) | |
4604 | - r_section->vma)); | |
4605 | } | |
252b5132 RH |
4606 | else |
4607 | { | |
116c20d2 | 4608 | r_section = aout_reloc_index_to_section (input_bfd, r_index); |
252b5132 | 4609 | |
116c20d2 NC |
4610 | /* If this is a PC relative reloc, then R_ADDEND is the |
4611 | difference between the two vmas, or | |
4612 | old_dest_sec + old_dest_off - (old_src_sec + old_src_off) | |
4613 | where | |
4614 | old_dest_sec == section->vma | |
4615 | and | |
4616 | old_src_sec == input_section->vma | |
4617 | and | |
4618 | old_src_off == r_addr | |
4619 | ||
4620 | _bfd_final_link_relocate expects RELOCATION + | |
4621 | R_ADDEND to be the VMA of the destination minus | |
4622 | r_addr (the minus r_addr is because this relocation | |
4623 | is not pcrel_offset, which is a bit confusing and | |
4624 | should, perhaps, be changed), or | |
4625 | new_dest_sec | |
4626 | where | |
4627 | new_dest_sec == output_section->vma + output_offset | |
4628 | We arrange for this to happen by setting RELOCATION to | |
4629 | new_dest_sec + old_src_sec - old_dest_sec | |
4630 | ||
4631 | If this is not a PC relative reloc, then R_ADDEND is | |
4632 | simply the VMA of the destination, so we set | |
4633 | RELOCATION to the change in the destination VMA, or | |
4634 | new_dest_sec - old_dest_sec | |
4635 | */ | |
4636 | relocation = (r_section->output_section->vma | |
4637 | + r_section->output_offset | |
4638 | - r_section->vma); | |
4639 | if (howto_table_ext[r_type].pc_relative) | |
252b5132 RH |
4640 | relocation += input_section->vma; |
4641 | } | |
4642 | ||
4643 | if (check_dynamic_reloc != NULL) | |
4644 | { | |
b34976b6 | 4645 | bfd_boolean skip; |
252b5132 RH |
4646 | |
4647 | if (! ((*check_dynamic_reloc) | |
57402f1e | 4648 | (flaginfo->info, input_bfd, input_section, h, |
116c20d2 | 4649 | (void *) rel, contents, &skip, &relocation))) |
b34976b6 | 4650 | return FALSE; |
252b5132 RH |
4651 | if (skip) |
4652 | continue; | |
4653 | } | |
4654 | ||
4655 | /* Now warn if a global symbol is undefined. We could not | |
07d6d2b8 AM |
4656 | do this earlier, because check_dynamic_reloc might want |
4657 | to skip this reloc. */ | |
116c20d2 | 4658 | if (hundef |
0e1862bb | 4659 | && ! bfd_link_pic (flaginfo->info) |
116c20d2 NC |
4660 | && r_type != (unsigned int) RELOC_BASE10 |
4661 | && r_type != (unsigned int) RELOC_BASE13 | |
4662 | && r_type != (unsigned int) RELOC_BASE22) | |
252b5132 RH |
4663 | { |
4664 | const char *name; | |
4665 | ||
4666 | if (h != NULL) | |
4667 | name = h->root.root.string; | |
4668 | else | |
4669 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
1a72702b AM |
4670 | (*flaginfo->info->callbacks->undefined_symbol) |
4671 | (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE); | |
252b5132 RH |
4672 | } |
4673 | ||
116c20d2 NC |
4674 | if (r_type != (unsigned int) RELOC_SPARC_REV32) |
4675 | r = MY_final_link_relocate (howto_table_ext + r_type, | |
4676 | input_bfd, input_section, | |
4677 | contents, r_addr, relocation, | |
4678 | r_addend); | |
4679 | else | |
252b5132 | 4680 | { |
116c20d2 | 4681 | bfd_vma x; |
252b5132 | 4682 | |
116c20d2 NC |
4683 | x = bfd_get_32 (input_bfd, contents + r_addr); |
4684 | x = x + relocation + r_addend; | |
4685 | bfd_putl32 (/*input_bfd,*/ x, contents + r_addr); | |
4686 | r = bfd_reloc_ok; | |
4687 | } | |
4688 | ||
4689 | if (r != bfd_reloc_ok) | |
4690 | { | |
4691 | switch (r) | |
4692 | { | |
4693 | default: | |
4694 | case bfd_reloc_outofrange: | |
4695 | abort (); | |
4696 | case bfd_reloc_overflow: | |
252b5132 | 4697 | { |
116c20d2 | 4698 | const char *name; |
252b5132 | 4699 | |
116c20d2 NC |
4700 | if (h != NULL) |
4701 | name = NULL; | |
4702 | else if (r_extern | |
4703 | || r_type == (unsigned int) RELOC_BASE10 | |
4704 | || r_type == (unsigned int) RELOC_BASE13 | |
4705 | || r_type == (unsigned int) RELOC_BASE22) | |
4706 | name = strings + GET_WORD (input_bfd, | |
4707 | syms[r_index].e_strx); | |
4708 | else | |
4709 | { | |
4710 | asection *s; | |
4711 | ||
4712 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
fd361982 | 4713 | name = bfd_section_name (s); |
116c20d2 | 4714 | } |
1a72702b AM |
4715 | (*flaginfo->info->callbacks->reloc_overflow) |
4716 | (flaginfo->info, (h ? &h->root : NULL), name, | |
4717 | howto_table_ext[r_type].name, | |
4718 | r_addend, input_bfd, input_section, r_addr); | |
252b5132 | 4719 | } |
116c20d2 NC |
4720 | break; |
4721 | } | |
252b5132 RH |
4722 | } |
4723 | } | |
4724 | } | |
4725 | ||
b34976b6 | 4726 | return TRUE; |
252b5132 RH |
4727 | } |
4728 | ||
116c20d2 NC |
4729 | /* Link an a.out section into the output file. */ |
4730 | ||
4731 | static bfd_boolean | |
57402f1e | 4732 | aout_link_input_section (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
4733 | bfd *input_bfd, |
4734 | asection *input_section, | |
4735 | file_ptr *reloff_ptr, | |
4736 | bfd_size_type rel_size) | |
4737 | { | |
4738 | bfd_size_type input_size; | |
4739 | void * relocs; | |
4740 | ||
4741 | /* Get the section contents. */ | |
4742 | input_size = input_section->size; | |
4743 | if (! bfd_get_section_contents (input_bfd, input_section, | |
57402f1e | 4744 | (void *) flaginfo->contents, |
116c20d2 NC |
4745 | (file_ptr) 0, input_size)) |
4746 | return FALSE; | |
4747 | ||
4748 | /* Read in the relocs if we haven't already done it. */ | |
4749 | if (aout_section_data (input_section) != NULL | |
4750 | && aout_section_data (input_section)->relocs != NULL) | |
4751 | relocs = aout_section_data (input_section)->relocs; | |
4752 | else | |
4753 | { | |
57402f1e | 4754 | relocs = flaginfo->relocs; |
116c20d2 NC |
4755 | if (rel_size > 0) |
4756 | { | |
4757 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
4758 | || bfd_bread (relocs, rel_size, input_bfd) != rel_size) | |
4759 | return FALSE; | |
4760 | } | |
4761 | } | |
4762 | ||
4763 | /* Relocate the section contents. */ | |
4764 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) | |
4765 | { | |
57402f1e | 4766 | if (! aout_link_input_section_std (flaginfo, input_bfd, input_section, |
116c20d2 | 4767 | (struct reloc_std_external *) relocs, |
57402f1e | 4768 | rel_size, flaginfo->contents)) |
116c20d2 NC |
4769 | return FALSE; |
4770 | } | |
4771 | else | |
4772 | { | |
57402f1e | 4773 | if (! aout_link_input_section_ext (flaginfo, input_bfd, input_section, |
116c20d2 | 4774 | (struct reloc_ext_external *) relocs, |
57402f1e | 4775 | rel_size, flaginfo->contents)) |
116c20d2 NC |
4776 | return FALSE; |
4777 | } | |
4778 | ||
4779 | /* Write out the section contents. */ | |
57402f1e | 4780 | if (! bfd_set_section_contents (flaginfo->output_bfd, |
116c20d2 | 4781 | input_section->output_section, |
57402f1e | 4782 | (void *) flaginfo->contents, |
116c20d2 NC |
4783 | (file_ptr) input_section->output_offset, |
4784 | input_size)) | |
4785 | return FALSE; | |
4786 | ||
4787 | /* If we are producing relocatable output, the relocs were | |
4788 | modified, and we now write them out. */ | |
0e1862bb | 4789 | if (bfd_link_relocatable (flaginfo->info) && rel_size > 0) |
116c20d2 | 4790 | { |
57402f1e | 4791 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) |
116c20d2 | 4792 | return FALSE; |
57402f1e | 4793 | if (bfd_bwrite (relocs, rel_size, flaginfo->output_bfd) != rel_size) |
116c20d2 NC |
4794 | return FALSE; |
4795 | *reloff_ptr += rel_size; | |
4796 | ||
4797 | /* Assert that the relocs have not run into the symbols, and | |
4798 | that if these are the text relocs they have not run into the | |
4799 | data relocs. */ | |
57402f1e NC |
4800 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
4801 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 4802 | || (*reloff_ptr |
57402f1e | 4803 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
116c20d2 NC |
4804 | } |
4805 | ||
4806 | return TRUE; | |
4807 | } | |
4808 | ||
4809 | /* Adjust and write out the symbols for an a.out file. Set the new | |
4810 | symbol indices into a symbol_map. */ | |
252b5132 | 4811 | |
b34976b6 | 4812 | static bfd_boolean |
57402f1e | 4813 | aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
252b5132 | 4814 | { |
252b5132 | 4815 | bfd *output_bfd; |
116c20d2 | 4816 | bfd_size_type sym_count; |
252b5132 | 4817 | char *strings; |
116c20d2 NC |
4818 | enum bfd_link_strip strip; |
4819 | enum bfd_link_discard discard; | |
4820 | struct external_nlist *outsym; | |
4821 | bfd_size_type strtab_index; | |
4822 | struct external_nlist *sym; | |
4823 | struct external_nlist *sym_end; | |
4824 | struct aout_link_hash_entry **sym_hash; | |
252b5132 | 4825 | int *symbol_map; |
116c20d2 NC |
4826 | bfd_boolean pass; |
4827 | bfd_boolean skip_next; | |
252b5132 | 4828 | |
57402f1e | 4829 | output_bfd = flaginfo->output_bfd; |
116c20d2 NC |
4830 | sym_count = obj_aout_external_sym_count (input_bfd); |
4831 | strings = obj_aout_external_strings (input_bfd); | |
57402f1e NC |
4832 | strip = flaginfo->info->strip; |
4833 | discard = flaginfo->info->discard; | |
4834 | outsym = flaginfo->output_syms; | |
252b5132 | 4835 | |
116c20d2 NC |
4836 | /* First write out a symbol for this object file, unless we are |
4837 | discarding such symbols. */ | |
4838 | if (strip != strip_all | |
4839 | && (strip != strip_some | |
57402f1e | 4840 | || bfd_hash_lookup (flaginfo->info->keep_hash, input_bfd->filename, |
116c20d2 NC |
4841 | FALSE, FALSE) != NULL) |
4842 | && discard != discard_all) | |
4843 | { | |
4844 | H_PUT_8 (output_bfd, N_TEXT, outsym->e_type); | |
4845 | H_PUT_8 (output_bfd, 0, outsym->e_other); | |
4846 | H_PUT_16 (output_bfd, 0, outsym->e_desc); | |
57402f1e | 4847 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
116c20d2 NC |
4848 | input_bfd->filename, FALSE); |
4849 | if (strtab_index == (bfd_size_type) -1) | |
4850 | return FALSE; | |
4851 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
4852 | PUT_WORD (output_bfd, | |
fd361982 | 4853 | (bfd_section_vma (obj_textsec (input_bfd)->output_section) |
116c20d2 NC |
4854 | + obj_textsec (input_bfd)->output_offset), |
4855 | outsym->e_value); | |
4856 | ++obj_aout_external_sym_count (output_bfd); | |
4857 | ++outsym; | |
4858 | } | |
252b5132 | 4859 | |
116c20d2 NC |
4860 | pass = FALSE; |
4861 | skip_next = FALSE; | |
4862 | sym = obj_aout_external_syms (input_bfd); | |
4863 | sym_end = sym + sym_count; | |
4864 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4865 | symbol_map = flaginfo->symbol_map; |
116c20d2 NC |
4866 | memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map); |
4867 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) | |
252b5132 | 4868 | { |
116c20d2 NC |
4869 | const char *name; |
4870 | int type; | |
4871 | struct aout_link_hash_entry *h; | |
4872 | bfd_boolean skip; | |
4873 | asection *symsec; | |
4874 | bfd_vma val = 0; | |
4875 | bfd_boolean copy; | |
252b5132 | 4876 | |
116c20d2 | 4877 | /* We set *symbol_map to 0 above for all symbols. If it has |
07d6d2b8 AM |
4878 | already been set to -1 for this symbol, it means that we are |
4879 | discarding it because it appears in a duplicate header file. | |
4880 | See the N_BINCL code below. */ | |
116c20d2 NC |
4881 | if (*symbol_map == -1) |
4882 | continue; | |
252b5132 | 4883 | |
116c20d2 | 4884 | /* Initialize *symbol_map to -1, which means that the symbol was |
07d6d2b8 AM |
4885 | not copied into the output file. We will change it later if |
4886 | we do copy the symbol over. */ | |
116c20d2 NC |
4887 | *symbol_map = -1; |
4888 | ||
4889 | type = H_GET_8 (input_bfd, sym->e_type); | |
4890 | name = strings + GET_WORD (input_bfd, sym->e_strx); | |
4891 | ||
4892 | h = NULL; | |
4893 | ||
4894 | if (pass) | |
252b5132 | 4895 | { |
116c20d2 NC |
4896 | /* Pass this symbol through. It is the target of an |
4897 | indirect or warning symbol. */ | |
4898 | val = GET_WORD (input_bfd, sym->e_value); | |
4899 | pass = FALSE; | |
252b5132 | 4900 | } |
116c20d2 | 4901 | else if (skip_next) |
252b5132 | 4902 | { |
116c20d2 NC |
4903 | /* Skip this symbol, which is the target of an indirect |
4904 | symbol that we have changed to no longer be an indirect | |
4905 | symbol. */ | |
4906 | skip_next = FALSE; | |
4907 | continue; | |
252b5132 | 4908 | } |
116c20d2 NC |
4909 | else |
4910 | { | |
4911 | struct aout_link_hash_entry *hresolve; | |
252b5132 | 4912 | |
116c20d2 NC |
4913 | /* We have saved the hash table entry for this symbol, if |
4914 | there is one. Note that we could just look it up again | |
4915 | in the hash table, provided we first check that it is an | |
4916 | external symbol. */ | |
4917 | h = *sym_hash; | |
252b5132 | 4918 | |
116c20d2 | 4919 | /* Use the name from the hash table, in case the symbol was |
07d6d2b8 | 4920 | wrapped. */ |
116c20d2 NC |
4921 | if (h != NULL |
4922 | && h->root.type != bfd_link_hash_warning) | |
4923 | name = h->root.root.string; | |
252b5132 | 4924 | |
116c20d2 NC |
4925 | /* If this is an indirect or warning symbol, then change |
4926 | hresolve to the base symbol. We also change *sym_hash so | |
4927 | that the relocation routines relocate against the real | |
4928 | symbol. */ | |
4929 | hresolve = h; | |
4930 | if (h != (struct aout_link_hash_entry *) NULL | |
4931 | && (h->root.type == bfd_link_hash_indirect | |
4932 | || h->root.type == bfd_link_hash_warning)) | |
252b5132 | 4933 | { |
116c20d2 NC |
4934 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; |
4935 | while (hresolve->root.type == bfd_link_hash_indirect | |
4936 | || hresolve->root.type == bfd_link_hash_warning) | |
4937 | hresolve = ((struct aout_link_hash_entry *) | |
4938 | hresolve->root.u.i.link); | |
4939 | *sym_hash = hresolve; | |
4940 | } | |
4941 | ||
4942 | /* If the symbol has already been written out, skip it. */ | |
4943 | if (h != NULL | |
4944 | && h->written) | |
4945 | { | |
4946 | if ((type & N_TYPE) == N_INDR | |
4947 | || type == N_WARNING) | |
4948 | skip_next = TRUE; | |
4949 | *symbol_map = h->indx; | |
4950 | continue; | |
4951 | } | |
4952 | ||
4953 | /* See if we are stripping this symbol. */ | |
4954 | skip = FALSE; | |
4955 | switch (strip) | |
4956 | { | |
4957 | case strip_none: | |
4958 | break; | |
4959 | case strip_debugger: | |
4960 | if ((type & N_STAB) != 0) | |
4961 | skip = TRUE; | |
4962 | break; | |
4963 | case strip_some: | |
57402f1e | 4964 | if (bfd_hash_lookup (flaginfo->info->keep_hash, name, FALSE, FALSE) |
116c20d2 NC |
4965 | == NULL) |
4966 | skip = TRUE; | |
4967 | break; | |
4968 | case strip_all: | |
4969 | skip = TRUE; | |
4970 | break; | |
4971 | } | |
4972 | if (skip) | |
4973 | { | |
4974 | if (h != NULL) | |
4975 | h->written = TRUE; | |
4976 | continue; | |
4977 | } | |
4978 | ||
4979 | /* Get the value of the symbol. */ | |
4980 | if ((type & N_TYPE) == N_TEXT | |
4981 | || type == N_WEAKT) | |
4982 | symsec = obj_textsec (input_bfd); | |
4983 | else if ((type & N_TYPE) == N_DATA | |
4984 | || type == N_WEAKD) | |
4985 | symsec = obj_datasec (input_bfd); | |
4986 | else if ((type & N_TYPE) == N_BSS | |
4987 | || type == N_WEAKB) | |
4988 | symsec = obj_bsssec (input_bfd); | |
4989 | else if ((type & N_TYPE) == N_ABS | |
4990 | || type == N_WEAKA) | |
4991 | symsec = bfd_abs_section_ptr; | |
4992 | else if (((type & N_TYPE) == N_INDR | |
4993 | && (hresolve == NULL | |
4994 | || (hresolve->root.type != bfd_link_hash_defined | |
4995 | && hresolve->root.type != bfd_link_hash_defweak | |
4996 | && hresolve->root.type != bfd_link_hash_common))) | |
4997 | || type == N_WARNING) | |
4998 | { | |
4999 | /* Pass the next symbol through unchanged. The | |
5000 | condition above for indirect symbols is so that if | |
5001 | the indirect symbol was defined, we output it with | |
5002 | the correct definition so the debugger will | |
5003 | understand it. */ | |
5004 | pass = TRUE; | |
5005 | val = GET_WORD (input_bfd, sym->e_value); | |
5006 | symsec = NULL; | |
5007 | } | |
5008 | else if ((type & N_STAB) != 0) | |
5009 | { | |
5010 | val = GET_WORD (input_bfd, sym->e_value); | |
5011 | symsec = NULL; | |
5012 | } | |
5013 | else | |
5014 | { | |
5015 | /* If we get here with an indirect symbol, it means that | |
5016 | we are outputting it with a real definition. In such | |
5017 | a case we do not want to output the next symbol, | |
5018 | which is the target of the indirection. */ | |
5019 | if ((type & N_TYPE) == N_INDR) | |
5020 | skip_next = TRUE; | |
5021 | ||
5022 | symsec = NULL; | |
5023 | ||
5024 | /* We need to get the value from the hash table. We use | |
5025 | hresolve so that if we have defined an indirect | |
5026 | symbol we output the final definition. */ | |
5027 | if (h == NULL) | |
5028 | { | |
5029 | switch (type & N_TYPE) | |
5030 | { | |
5031 | case N_SETT: | |
5032 | symsec = obj_textsec (input_bfd); | |
5033 | break; | |
5034 | case N_SETD: | |
5035 | symsec = obj_datasec (input_bfd); | |
5036 | break; | |
5037 | case N_SETB: | |
5038 | symsec = obj_bsssec (input_bfd); | |
5039 | break; | |
5040 | case N_SETA: | |
5041 | symsec = bfd_abs_section_ptr; | |
5042 | break; | |
5043 | default: | |
5044 | val = 0; | |
5045 | break; | |
5046 | } | |
5047 | } | |
5048 | else if (hresolve->root.type == bfd_link_hash_defined | |
5049 | || hresolve->root.type == bfd_link_hash_defweak) | |
252b5132 | 5050 | { |
116c20d2 | 5051 | asection *input_section; |
252b5132 RH |
5052 | asection *output_section; |
5053 | ||
116c20d2 NC |
5054 | /* This case usually means a common symbol which was |
5055 | turned into a defined symbol. */ | |
5056 | input_section = hresolve->root.u.def.section; | |
5057 | output_section = input_section->output_section; | |
5058 | BFD_ASSERT (bfd_is_abs_section (output_section) | |
5059 | || output_section->owner == output_bfd); | |
5060 | val = (hresolve->root.u.def.value | |
fd361982 | 5061 | + bfd_section_vma (output_section) |
116c20d2 NC |
5062 | + input_section->output_offset); |
5063 | ||
5064 | /* Get the correct type based on the section. If | |
5065 | this is a constructed set, force it to be | |
5066 | globally visible. */ | |
5067 | if (type == N_SETT | |
5068 | || type == N_SETD | |
5069 | || type == N_SETB | |
5070 | || type == N_SETA) | |
5071 | type |= N_EXT; | |
5072 | ||
5073 | type &=~ N_TYPE; | |
252b5132 | 5074 | |
252b5132 | 5075 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 NC |
5076 | type |= (hresolve->root.type == bfd_link_hash_defined |
5077 | ? N_TEXT | |
5078 | : N_WEAKT); | |
252b5132 | 5079 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 NC |
5080 | type |= (hresolve->root.type == bfd_link_hash_defined |
5081 | ? N_DATA | |
5082 | : N_WEAKD); | |
252b5132 | 5083 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 NC |
5084 | type |= (hresolve->root.type == bfd_link_hash_defined |
5085 | ? N_BSS | |
5086 | : N_WEAKB); | |
252b5132 | 5087 | else |
116c20d2 NC |
5088 | type |= (hresolve->root.type == bfd_link_hash_defined |
5089 | ? N_ABS | |
5090 | : N_WEAKA); | |
5091 | } | |
5092 | else if (hresolve->root.type == bfd_link_hash_common) | |
5093 | val = hresolve->root.u.c.size; | |
5094 | else if (hresolve->root.type == bfd_link_hash_undefweak) | |
5095 | { | |
5096 | val = 0; | |
5097 | type = N_WEAKU; | |
252b5132 RH |
5098 | } |
5099 | else | |
116c20d2 NC |
5100 | val = 0; |
5101 | } | |
5102 | if (symsec != NULL) | |
5103 | val = (symsec->output_section->vma | |
5104 | + symsec->output_offset | |
5105 | + (GET_WORD (input_bfd, sym->e_value) | |
5106 | - symsec->vma)); | |
5107 | ||
5108 | /* If this is a global symbol set the written flag, and if | |
5109 | it is a local symbol see if we should discard it. */ | |
5110 | if (h != NULL) | |
5111 | { | |
5112 | h->written = TRUE; | |
5113 | h->indx = obj_aout_external_sym_count (output_bfd); | |
5114 | } | |
5115 | else if ((type & N_TYPE) != N_SETT | |
5116 | && (type & N_TYPE) != N_SETD | |
5117 | && (type & N_TYPE) != N_SETB | |
5118 | && (type & N_TYPE) != N_SETA) | |
5119 | { | |
5120 | switch (discard) | |
252b5132 | 5121 | { |
116c20d2 NC |
5122 | case discard_none: |
5123 | case discard_sec_merge: | |
5124 | break; | |
5125 | case discard_l: | |
5126 | if ((type & N_STAB) == 0 | |
5127 | && bfd_is_local_label_name (input_bfd, name)) | |
5128 | skip = TRUE; | |
5129 | break; | |
5130 | case discard_all: | |
5131 | skip = TRUE; | |
5132 | break; | |
5133 | } | |
5134 | if (skip) | |
5135 | { | |
5136 | pass = FALSE; | |
5137 | continue; | |
5138 | } | |
5139 | } | |
252b5132 | 5140 | |
116c20d2 NC |
5141 | /* An N_BINCL symbol indicates the start of the stabs |
5142 | entries for a header file. We need to scan ahead to the | |
5143 | next N_EINCL symbol, ignoring nesting, adding up all the | |
5144 | characters in the symbol names, not including the file | |
5145 | numbers in types (the first number after an open | |
5146 | parenthesis). */ | |
5147 | if (type == (int) N_BINCL) | |
5148 | { | |
5149 | struct external_nlist *incl_sym; | |
5150 | int nest; | |
5151 | struct aout_link_includes_entry *incl_entry; | |
5152 | struct aout_link_includes_totals *t; | |
5153 | ||
5154 | val = 0; | |
5155 | nest = 0; | |
5156 | for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) | |
5157 | { | |
5158 | int incl_type; | |
5159 | ||
5160 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); | |
5161 | if (incl_type == (int) N_EINCL) | |
252b5132 | 5162 | { |
116c20d2 NC |
5163 | if (nest == 0) |
5164 | break; | |
5165 | --nest; | |
5166 | } | |
5167 | else if (incl_type == (int) N_BINCL) | |
5168 | ++nest; | |
5169 | else if (nest == 0) | |
5170 | { | |
5171 | const char *s; | |
5172 | ||
5173 | s = strings + GET_WORD (input_bfd, incl_sym->e_strx); | |
5174 | for (; *s != '\0'; s++) | |
252b5132 | 5175 | { |
116c20d2 NC |
5176 | val += *s; |
5177 | if (*s == '(') | |
252b5132 | 5178 | { |
116c20d2 NC |
5179 | /* Skip the file number. */ |
5180 | ++s; | |
5181 | while (ISDIGIT (*s)) | |
5182 | ++s; | |
5183 | --s; | |
252b5132 | 5184 | } |
252b5132 | 5185 | } |
116c20d2 NC |
5186 | } |
5187 | } | |
252b5132 | 5188 | |
116c20d2 | 5189 | /* If we have already included a header file with the |
07d6d2b8 AM |
5190 | same value, then replace this one with an N_EXCL |
5191 | symbol. */ | |
57402f1e NC |
5192 | copy = (bfd_boolean) (! flaginfo->info->keep_memory); |
5193 | incl_entry = aout_link_includes_lookup (&flaginfo->includes, | |
116c20d2 NC |
5194 | name, TRUE, copy); |
5195 | if (incl_entry == NULL) | |
5196 | return FALSE; | |
5197 | for (t = incl_entry->totals; t != NULL; t = t->next) | |
5198 | if (t->total == val) | |
5199 | break; | |
5200 | if (t == NULL) | |
5201 | { | |
5202 | /* This is the first time we have seen this header | |
07d6d2b8 | 5203 | file with this set of stabs strings. */ |
a50b1753 | 5204 | t = (struct aout_link_includes_totals *) |
07d6d2b8 | 5205 | bfd_hash_allocate (&flaginfo->includes.root, |
116c20d2 NC |
5206 | sizeof *t); |
5207 | if (t == NULL) | |
5208 | return FALSE; | |
5209 | t->total = val; | |
5210 | t->next = incl_entry->totals; | |
5211 | incl_entry->totals = t; | |
5212 | } | |
5213 | else | |
5214 | { | |
5215 | int *incl_map; | |
5216 | ||
5217 | /* This is a duplicate header file. We must change | |
07d6d2b8 AM |
5218 | it to be an N_EXCL entry, and mark all the |
5219 | included symbols to prevent outputting them. */ | |
116c20d2 NC |
5220 | type = (int) N_EXCL; |
5221 | ||
5222 | nest = 0; | |
5223 | for (incl_sym = sym + 1, incl_map = symbol_map + 1; | |
5224 | incl_sym < sym_end; | |
5225 | incl_sym++, incl_map++) | |
5226 | { | |
5227 | int incl_type; | |
5228 | ||
5229 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); | |
5230 | if (incl_type == (int) N_EINCL) | |
5231 | { | |
5232 | if (nest == 0) | |
5233 | { | |
5234 | *incl_map = -1; | |
5235 | break; | |
5236 | } | |
5237 | --nest; | |
252b5132 | 5238 | } |
116c20d2 NC |
5239 | else if (incl_type == (int) N_BINCL) |
5240 | ++nest; | |
5241 | else if (nest == 0) | |
5242 | *incl_map = -1; | |
252b5132 | 5243 | } |
252b5132 RH |
5244 | } |
5245 | } | |
116c20d2 NC |
5246 | } |
5247 | ||
5248 | /* Copy this symbol into the list of symbols we are going to | |
5249 | write out. */ | |
5250 | H_PUT_8 (output_bfd, type, outsym->e_type); | |
5251 | H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other); | |
5252 | H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc); | |
5253 | copy = FALSE; | |
57402f1e | 5254 | if (! flaginfo->info->keep_memory) |
116c20d2 NC |
5255 | { |
5256 | /* name points into a string table which we are going to | |
5257 | free. If there is a hash table entry, use that string. | |
5258 | Otherwise, copy name into memory. */ | |
5259 | if (h != NULL) | |
5260 | name = h->root.root.string; | |
252b5132 | 5261 | else |
116c20d2 NC |
5262 | copy = TRUE; |
5263 | } | |
57402f1e | 5264 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
116c20d2 NC |
5265 | name, copy); |
5266 | if (strtab_index == (bfd_size_type) -1) | |
5267 | return FALSE; | |
5268 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
5269 | PUT_WORD (output_bfd, val, outsym->e_value); | |
5270 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
5271 | ++obj_aout_external_sym_count (output_bfd); | |
5272 | ++outsym; | |
5273 | } | |
252b5132 | 5274 | |
116c20d2 | 5275 | /* Write out the output symbols we have just constructed. */ |
57402f1e | 5276 | if (outsym > flaginfo->output_syms) |
116c20d2 NC |
5277 | { |
5278 | bfd_size_type outsym_size; | |
252b5132 | 5279 | |
57402f1e | 5280 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0) |
116c20d2 | 5281 | return FALSE; |
57402f1e | 5282 | outsym_size = outsym - flaginfo->output_syms; |
116c20d2 | 5283 | outsym_size *= EXTERNAL_NLIST_SIZE; |
57402f1e | 5284 | if (bfd_bwrite ((void *) flaginfo->output_syms, outsym_size, output_bfd) |
116c20d2 NC |
5285 | != outsym_size) |
5286 | return FALSE; | |
57402f1e | 5287 | flaginfo->symoff += outsym_size; |
116c20d2 | 5288 | } |
252b5132 | 5289 | |
116c20d2 NC |
5290 | return TRUE; |
5291 | } | |
252b5132 | 5292 | |
116c20d2 | 5293 | /* Link an a.out input BFD into the output file. */ |
252b5132 | 5294 | |
116c20d2 | 5295 | static bfd_boolean |
57402f1e | 5296 | aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
116c20d2 | 5297 | { |
116c20d2 | 5298 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); |
252b5132 | 5299 | |
116c20d2 NC |
5300 | /* If this is a dynamic object, it may need special handling. */ |
5301 | if ((input_bfd->flags & DYNAMIC) != 0 | |
5302 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
5303 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
57402f1e | 5304 | (flaginfo->info, input_bfd)); |
252b5132 | 5305 | |
116c20d2 | 5306 | /* Get the symbols. We probably have them already, unless |
57402f1e | 5307 | flaginfo->info->keep_memory is FALSE. */ |
116c20d2 NC |
5308 | if (! aout_get_external_symbols (input_bfd)) |
5309 | return FALSE; | |
252b5132 | 5310 | |
116c20d2 | 5311 | /* Write out the symbols and get a map of the new indices. The map |
57402f1e NC |
5312 | is placed into flaginfo->symbol_map. */ |
5313 | if (! aout_link_write_symbols (flaginfo, input_bfd)) | |
116c20d2 | 5314 | return FALSE; |
252b5132 | 5315 | |
116c20d2 NC |
5316 | /* Relocate and write out the sections. These functions use the |
5317 | symbol map created by aout_link_write_symbols. The linker_mark | |
5318 | field will be set if these sections are to be included in the | |
5319 | link, which will normally be the case. */ | |
5320 | if (obj_textsec (input_bfd)->linker_mark) | |
5321 | { | |
57402f1e | 5322 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 5323 | obj_textsec (input_bfd), |
57402f1e | 5324 | &flaginfo->treloff, |
116c20d2 NC |
5325 | exec_hdr (input_bfd)->a_trsize)) |
5326 | return FALSE; | |
5327 | } | |
5328 | if (obj_datasec (input_bfd)->linker_mark) | |
5329 | { | |
57402f1e | 5330 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 5331 | obj_datasec (input_bfd), |
57402f1e | 5332 | &flaginfo->dreloff, |
116c20d2 NC |
5333 | exec_hdr (input_bfd)->a_drsize)) |
5334 | return FALSE; | |
5335 | } | |
5336 | ||
5337 | /* If we are not keeping memory, we don't need the symbols any | |
5338 | longer. We still need them if we are keeping memory, because the | |
5339 | strings in the hash table point into them. */ | |
57402f1e | 5340 | if (! flaginfo->info->keep_memory) |
116c20d2 NC |
5341 | { |
5342 | if (! aout_link_free_symbols (input_bfd)) | |
5343 | return FALSE; | |
5344 | } | |
5345 | ||
5346 | return TRUE; | |
5347 | } | |
5348 | ||
5349 | /* Do the final link step. This is called on the output BFD. The | |
5350 | INFO structure should point to a list of BFDs linked through the | |
c72f2fb2 | 5351 | link.next field which can be used to find each BFD which takes part |
116c20d2 NC |
5352 | in the output. Also, each section in ABFD should point to a list |
5353 | of bfd_link_order structures which list all the input sections for | |
5354 | the output section. */ | |
5355 | ||
5356 | bfd_boolean | |
5357 | NAME (aout, final_link) (bfd *abfd, | |
5358 | struct bfd_link_info *info, | |
5359 | void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *)) | |
5360 | { | |
5361 | struct aout_final_link_info aout_info; | |
5362 | bfd_boolean includes_hash_initialized = FALSE; | |
5363 | bfd *sub; | |
5364 | bfd_size_type trsize, drsize; | |
5365 | bfd_size_type max_contents_size; | |
5366 | bfd_size_type max_relocs_size; | |
5367 | bfd_size_type max_sym_count; | |
116c20d2 NC |
5368 | struct bfd_link_order *p; |
5369 | asection *o; | |
5370 | bfd_boolean have_link_order_relocs; | |
5371 | ||
0e1862bb | 5372 | if (bfd_link_pic (info)) |
116c20d2 NC |
5373 | abfd->flags |= DYNAMIC; |
5374 | ||
5375 | aout_info.info = info; | |
5376 | aout_info.output_bfd = abfd; | |
5377 | aout_info.contents = NULL; | |
5378 | aout_info.relocs = NULL; | |
5379 | aout_info.symbol_map = NULL; | |
5380 | aout_info.output_syms = NULL; | |
252b5132 | 5381 | |
66eb6687 AM |
5382 | if (!bfd_hash_table_init_n (&aout_info.includes.root, |
5383 | aout_link_includes_newfunc, | |
5384 | sizeof (struct aout_link_includes_entry), | |
5385 | 251)) | |
116c20d2 NC |
5386 | goto error_return; |
5387 | includes_hash_initialized = TRUE; | |
252b5132 | 5388 | |
116c20d2 NC |
5389 | /* Figure out the largest section size. Also, if generating |
5390 | relocatable output, count the relocs. */ | |
5391 | trsize = 0; | |
5392 | drsize = 0; | |
5393 | max_contents_size = 0; | |
5394 | max_relocs_size = 0; | |
5395 | max_sym_count = 0; | |
c72f2fb2 | 5396 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 NC |
5397 | { |
5398 | bfd_size_type sz; | |
252b5132 | 5399 | |
0e1862bb | 5400 | if (bfd_link_relocatable (info)) |
116c20d2 NC |
5401 | { |
5402 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) | |
252b5132 | 5403 | { |
116c20d2 NC |
5404 | trsize += exec_hdr (sub)->a_trsize; |
5405 | drsize += exec_hdr (sub)->a_drsize; | |
252b5132 | 5406 | } |
252b5132 RH |
5407 | else |
5408 | { | |
116c20d2 NC |
5409 | /* FIXME: We need to identify the .text and .data sections |
5410 | and call get_reloc_upper_bound and canonicalize_reloc to | |
5411 | work out the number of relocs needed, and then multiply | |
5412 | by the reloc size. */ | |
4eca0228 | 5413 | _bfd_error_handler |
695344c0 | 5414 | /* xgettext:c-format */ |
871b3ab2 | 5415 | (_("%pB: relocatable link from %s to %s not supported"), |
dae82561 | 5416 | abfd, sub->xvec->name, abfd->xvec->name); |
116c20d2 NC |
5417 | bfd_set_error (bfd_error_invalid_operation); |
5418 | goto error_return; | |
252b5132 | 5419 | } |
116c20d2 | 5420 | } |
252b5132 | 5421 | |
116c20d2 NC |
5422 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
5423 | { | |
5424 | sz = obj_textsec (sub)->size; | |
5425 | if (sz > max_contents_size) | |
5426 | max_contents_size = sz; | |
5427 | sz = obj_datasec (sub)->size; | |
5428 | if (sz > max_contents_size) | |
5429 | max_contents_size = sz; | |
252b5132 | 5430 | |
116c20d2 NC |
5431 | sz = exec_hdr (sub)->a_trsize; |
5432 | if (sz > max_relocs_size) | |
5433 | max_relocs_size = sz; | |
5434 | sz = exec_hdr (sub)->a_drsize; | |
5435 | if (sz > max_relocs_size) | |
5436 | max_relocs_size = sz; | |
252b5132 | 5437 | |
116c20d2 NC |
5438 | sz = obj_aout_external_sym_count (sub); |
5439 | if (sz > max_sym_count) | |
5440 | max_sym_count = sz; | |
252b5132 RH |
5441 | } |
5442 | } | |
5443 | ||
0e1862bb | 5444 | if (bfd_link_relocatable (info)) |
116c20d2 NC |
5445 | { |
5446 | if (obj_textsec (abfd) != NULL) | |
5447 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
8423293d | 5448 | ->map_head.link_order) |
116c20d2 NC |
5449 | * obj_reloc_entry_size (abfd)); |
5450 | if (obj_datasec (abfd) != NULL) | |
5451 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
8423293d | 5452 | ->map_head.link_order) |
116c20d2 NC |
5453 | * obj_reloc_entry_size (abfd)); |
5454 | } | |
252b5132 | 5455 | |
116c20d2 NC |
5456 | exec_hdr (abfd)->a_trsize = trsize; |
5457 | exec_hdr (abfd)->a_drsize = drsize; | |
252b5132 | 5458 | |
116c20d2 | 5459 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); |
252b5132 | 5460 | |
116c20d2 NC |
5461 | /* Adjust the section sizes and vmas according to the magic number. |
5462 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
5463 | filepos for each section. */ | |
3a8c4a5b | 5464 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
116c20d2 | 5465 | goto error_return; |
252b5132 | 5466 | |
116c20d2 NC |
5467 | /* The relocation and symbol file positions differ among a.out |
5468 | targets. We are passed a callback routine from the backend | |
5469 | specific code to handle this. | |
5470 | FIXME: At this point we do not know how much space the symbol | |
5471 | table will require. This will not work for any (nonstandard) | |
5472 | a.out target that needs to know the symbol table size before it | |
dc12032b | 5473 | can compute the relocation file positions. */ |
116c20d2 NC |
5474 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, |
5475 | &aout_info.symoff); | |
5476 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
5477 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
5478 | obj_sym_filepos (abfd) = aout_info.symoff; | |
252b5132 | 5479 | |
116c20d2 NC |
5480 | /* We keep a count of the symbols as we output them. */ |
5481 | obj_aout_external_sym_count (abfd) = 0; | |
5482 | ||
5483 | /* We accumulate the string table as we write out the symbols. */ | |
5484 | aout_info.strtab = _bfd_stringtab_init (); | |
5485 | if (aout_info.strtab == NULL) | |
5486 | goto error_return; | |
5487 | ||
5488 | /* Allocate buffers to hold section contents and relocs. */ | |
a50b1753 | 5489 | aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size); |
116c20d2 | 5490 | aout_info.relocs = bfd_malloc (max_relocs_size); |
c38eb2a6 | 5491 | aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int)); |
a50b1753 NC |
5492 | aout_info.output_syms = (struct external_nlist *) |
5493 | bfd_malloc ((max_sym_count + 1) * sizeof (struct external_nlist)); | |
116c20d2 NC |
5494 | if ((aout_info.contents == NULL && max_contents_size != 0) |
5495 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
5496 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
5497 | || aout_info.output_syms == NULL) | |
5498 | goto error_return; | |
5499 | ||
5500 | /* If we have a symbol named __DYNAMIC, force it out now. This is | |
5501 | required by SunOS. Doing this here rather than in sunos.c is a | |
5502 | hack, but it's easier than exporting everything which would be | |
5503 | needed. */ | |
5504 | { | |
5505 | struct aout_link_hash_entry *h; | |
5506 | ||
5507 | h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", | |
5508 | FALSE, FALSE, FALSE); | |
5509 | if (h != NULL) | |
7686d77d | 5510 | aout_link_write_other_symbol (&h->root.root, &aout_info); |
116c20d2 NC |
5511 | } |
5512 | ||
5513 | /* The most time efficient way to do the link would be to read all | |
5514 | the input object files into memory and then sort out the | |
5515 | information into the output file. Unfortunately, that will | |
5516 | probably use too much memory. Another method would be to step | |
5517 | through everything that composes the text section and write it | |
5518 | out, and then everything that composes the data section and write | |
5519 | it out, and then write out the relocs, and then write out the | |
5520 | symbols. Unfortunately, that requires reading stuff from each | |
5521 | input file several times, and we will not be able to keep all the | |
5522 | input files open simultaneously, and reopening them will be slow. | |
5523 | ||
5524 | What we do is basically process one input file at a time. We do | |
5525 | everything we need to do with an input file once--copy over the | |
5526 | section contents, handle the relocation information, and write | |
5527 | out the symbols--and then we throw away the information we read | |
5528 | from it. This approach requires a lot of lseeks of the output | |
5529 | file, which is unfortunate but still faster than reopening a lot | |
5530 | of files. | |
5531 | ||
5532 | We use the output_has_begun field of the input BFDs to see | |
5533 | whether we have already handled it. */ | |
c72f2fb2 | 5534 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 | 5535 | sub->output_has_begun = FALSE; |
252b5132 | 5536 | |
116c20d2 NC |
5537 | /* Mark all sections which are to be included in the link. This |
5538 | will normally be every section. We need to do this so that we | |
5539 | can identify any sections which the linker has decided to not | |
5540 | include. */ | |
5541 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5542 | { |
8423293d | 5543 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
116c20d2 NC |
5544 | if (p->type == bfd_indirect_link_order) |
5545 | p->u.indirect.section->linker_mark = TRUE; | |
252b5132 RH |
5546 | } |
5547 | ||
116c20d2 NC |
5548 | have_link_order_relocs = FALSE; |
5549 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5550 | { |
8423293d | 5551 | for (p = o->map_head.link_order; |
116c20d2 NC |
5552 | p != NULL; |
5553 | p = p->next) | |
252b5132 | 5554 | { |
116c20d2 NC |
5555 | if (p->type == bfd_indirect_link_order |
5556 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
5557 | == bfd_target_aout_flavour)) | |
252b5132 | 5558 | { |
116c20d2 NC |
5559 | bfd *input_bfd; |
5560 | ||
5561 | input_bfd = p->u.indirect.section->owner; | |
5562 | if (! input_bfd->output_has_begun) | |
252b5132 | 5563 | { |
116c20d2 NC |
5564 | if (! aout_link_input_bfd (&aout_info, input_bfd)) |
5565 | goto error_return; | |
5566 | input_bfd->output_has_begun = TRUE; | |
252b5132 | 5567 | } |
252b5132 | 5568 | } |
116c20d2 NC |
5569 | else if (p->type == bfd_section_reloc_link_order |
5570 | || p->type == bfd_symbol_reloc_link_order) | |
5571 | { | |
5572 | /* These are handled below. */ | |
5573 | have_link_order_relocs = TRUE; | |
5574 | } | |
5575 | else | |
5576 | { | |
5577 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
5578 | goto error_return; | |
5579 | } | |
252b5132 RH |
5580 | } |
5581 | } | |
252b5132 | 5582 | |
116c20d2 | 5583 | /* Write out any symbols that we have not already written out. */ |
7686d77d AM |
5584 | bfd_hash_traverse (&info->hash->table, |
5585 | aout_link_write_other_symbol, | |
5586 | &aout_info); | |
116c20d2 NC |
5587 | |
5588 | /* Now handle any relocs we were asked to create by the linker. | |
5589 | These did not come from any input file. We must do these after | |
5590 | we have written out all the symbols, so that we know the symbol | |
5591 | indices to use. */ | |
5592 | if (have_link_order_relocs) | |
5593 | { | |
5594 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5595 | { |
8423293d | 5596 | for (p = o->map_head.link_order; |
116c20d2 NC |
5597 | p != NULL; |
5598 | p = p->next) | |
5599 | { | |
5600 | if (p->type == bfd_section_reloc_link_order | |
5601 | || p->type == bfd_symbol_reloc_link_order) | |
5602 | { | |
5603 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
5604 | goto error_return; | |
5605 | } | |
5606 | } | |
252b5132 | 5607 | } |
116c20d2 | 5608 | } |
252b5132 | 5609 | |
116c20d2 NC |
5610 | if (aout_info.contents != NULL) |
5611 | { | |
5612 | free (aout_info.contents); | |
5613 | aout_info.contents = NULL; | |
5614 | } | |
5615 | if (aout_info.relocs != NULL) | |
5616 | { | |
5617 | free (aout_info.relocs); | |
5618 | aout_info.relocs = NULL; | |
5619 | } | |
5620 | if (aout_info.symbol_map != NULL) | |
5621 | { | |
5622 | free (aout_info.symbol_map); | |
5623 | aout_info.symbol_map = NULL; | |
5624 | } | |
5625 | if (aout_info.output_syms != NULL) | |
5626 | { | |
5627 | free (aout_info.output_syms); | |
5628 | aout_info.output_syms = NULL; | |
5629 | } | |
5630 | if (includes_hash_initialized) | |
5631 | { | |
5632 | bfd_hash_table_free (&aout_info.includes.root); | |
5633 | includes_hash_initialized = FALSE; | |
5634 | } | |
252b5132 | 5635 | |
116c20d2 NC |
5636 | /* Finish up any dynamic linking we may be doing. */ |
5637 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
5638 | { | |
5639 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
5640 | goto error_return; | |
252b5132 RH |
5641 | } |
5642 | ||
116c20d2 NC |
5643 | /* Update the header information. */ |
5644 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
5645 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
5646 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
5647 | obj_textsec (abfd)->reloc_count = | |
5648 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
5649 | obj_datasec (abfd)->reloc_count = | |
5650 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
252b5132 | 5651 | |
116c20d2 | 5652 | /* Write out the string table, unless there are no symbols. */ |
f6e688f7 AM |
5653 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0) |
5654 | goto error_return; | |
116c20d2 NC |
5655 | if (abfd->symcount > 0) |
5656 | { | |
f6e688f7 | 5657 | if (!emit_stringtab (abfd, aout_info.strtab)) |
116c20d2 NC |
5658 | goto error_return; |
5659 | } | |
f6e688f7 | 5660 | else |
116c20d2 | 5661 | { |
f6e688f7 | 5662 | bfd_byte b[BYTES_IN_WORD]; |
252b5132 | 5663 | |
f6e688f7 AM |
5664 | memset (b, 0, BYTES_IN_WORD); |
5665 | if (bfd_bwrite (b, (bfd_size_type) BYTES_IN_WORD, abfd) != BYTES_IN_WORD) | |
116c20d2 NC |
5666 | goto error_return; |
5667 | } | |
252b5132 | 5668 | |
b34976b6 | 5669 | return TRUE; |
116c20d2 NC |
5670 | |
5671 | error_return: | |
5672 | if (aout_info.contents != NULL) | |
5673 | free (aout_info.contents); | |
5674 | if (aout_info.relocs != NULL) | |
5675 | free (aout_info.relocs); | |
5676 | if (aout_info.symbol_map != NULL) | |
5677 | free (aout_info.symbol_map); | |
5678 | if (aout_info.output_syms != NULL) | |
5679 | free (aout_info.output_syms); | |
5680 | if (includes_hash_initialized) | |
5681 | bfd_hash_table_free (&aout_info.includes.root); | |
5682 | return FALSE; | |
252b5132 | 5683 | } |