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252b5132 | 1 | /* BFD semi-generic back-end for a.out binaries. |
219d1afa | 2 | Copyright (C) 1990-2018 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" |
3db64b00 | 120 | #include "bfd.h" |
3882b010 | 121 | #include "safe-ctype.h" |
252b5132 RH |
122 | #include "bfdlink.h" |
123 | ||
124 | #include "libaout.h" | |
125 | #include "libbfd.h" | |
126 | #include "aout/aout64.h" | |
127 | #include "aout/stab_gnu.h" | |
128 | #include "aout/ar.h" | |
129 | ||
252b5132 RH |
130 | /* |
131 | SUBSECTION | |
132 | Relocations | |
133 | ||
134 | DESCRIPTION | |
135 | The file @file{aoutx.h} provides for both the @emph{standard} | |
136 | and @emph{extended} forms of a.out relocation records. | |
137 | ||
a8eb42a8 AM |
138 | The standard records contain only an address, a symbol index, |
139 | and a type field. The extended records also have a full | |
140 | integer for an addend. */ | |
252b5132 | 141 | |
252b5132 RH |
142 | #ifndef CTOR_TABLE_RELOC_HOWTO |
143 | #define CTOR_TABLE_RELOC_IDX 2 | |
923f08ff AM |
144 | #define CTOR_TABLE_RELOC_HOWTO(BFD) \ |
145 | ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \ | |
146 | ? howto_table_ext : howto_table_std) \ | |
147 | + CTOR_TABLE_RELOC_IDX) | |
252b5132 RH |
148 | #endif |
149 | ||
150 | #ifndef MY_swap_std_reloc_in | |
116c20d2 | 151 | #define MY_swap_std_reloc_in NAME (aout, swap_std_reloc_in) |
252b5132 RH |
152 | #endif |
153 | ||
1642229e | 154 | #ifndef MY_swap_ext_reloc_in |
116c20d2 | 155 | #define MY_swap_ext_reloc_in NAME (aout, swap_ext_reloc_in) |
1642229e HPN |
156 | #endif |
157 | ||
252b5132 | 158 | #ifndef MY_swap_std_reloc_out |
116c20d2 | 159 | #define MY_swap_std_reloc_out NAME (aout, swap_std_reloc_out) |
252b5132 RH |
160 | #endif |
161 | ||
1642229e | 162 | #ifndef MY_swap_ext_reloc_out |
116c20d2 | 163 | #define MY_swap_ext_reloc_out NAME (aout, swap_ext_reloc_out) |
1642229e HPN |
164 | #endif |
165 | ||
252b5132 RH |
166 | #ifndef MY_final_link_relocate |
167 | #define MY_final_link_relocate _bfd_final_link_relocate | |
168 | #endif | |
169 | ||
170 | #ifndef MY_relocate_contents | |
171 | #define MY_relocate_contents _bfd_relocate_contents | |
172 | #endif | |
173 | ||
116c20d2 NC |
174 | #define howto_table_ext NAME (aout, ext_howto_table) |
175 | #define howto_table_std NAME (aout, std_howto_table) | |
252b5132 RH |
176 | |
177 | reloc_howto_type howto_table_ext[] = | |
178 | { | |
07d6d2b8 AM |
179 | /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */ |
180 | HOWTO (RELOC_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "8", FALSE, 0, 0x000000ff, FALSE), | |
181 | HOWTO (RELOC_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, 0, "16", FALSE, 0, 0x0000ffff, FALSE), | |
182 | HOWTO (RELOC_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "32", FALSE, 0, 0xffffffff, FALSE), | |
183 | HOWTO (RELOC_DISP8, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0, "DISP8", FALSE, 0, 0x000000ff, FALSE), | |
184 | HOWTO (RELOC_DISP16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "DISP16", FALSE, 0, 0x0000ffff, FALSE), | |
185 | HOWTO (RELOC_DISP32, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0, "DISP32", FALSE, 0, 0xffffffff, FALSE), | |
186 | HOWTO (RELOC_WDISP30, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "WDISP30", FALSE, 0, 0x3fffffff, FALSE), | |
187 | HOWTO (RELOC_WDISP22, 2, 2, 22, TRUE, 0, complain_overflow_signed, 0, "WDISP22", FALSE, 0, 0x003fffff, FALSE), | |
188 | HOWTO (RELOC_HI22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "HI22", FALSE, 0, 0x003fffff, FALSE), | |
189 | HOWTO (RELOC_22, 0, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "22", FALSE, 0, 0x003fffff, FALSE), | |
190 | HOWTO (RELOC_13, 0, 2, 13, FALSE, 0, complain_overflow_bitfield, 0, "13", FALSE, 0, 0x00001fff, FALSE), | |
191 | HOWTO (RELOC_LO10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "LO10", FALSE, 0, 0x000003ff, FALSE), | |
192 | HOWTO (RELOC_SFA_BASE,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_BASE", FALSE, 0, 0xffffffff, FALSE), | |
193 | HOWTO (RELOC_SFA_OFF13,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_OFF13", FALSE, 0, 0xffffffff, FALSE), | |
194 | HOWTO (RELOC_BASE10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "BASE10", FALSE, 0, 0x000003ff, FALSE), | |
195 | HOWTO (RELOC_BASE13, 0, 2, 13, FALSE, 0, complain_overflow_signed, 0, "BASE13", FALSE, 0, 0x00001fff, FALSE), | |
196 | HOWTO (RELOC_BASE22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "BASE22", FALSE, 0, 0x003fffff, FALSE), | |
197 | HOWTO (RELOC_PC10, 0, 2, 10, TRUE, 0, complain_overflow_dont, 0, "PC10", FALSE, 0, 0x000003ff, TRUE), | |
198 | HOWTO (RELOC_PC22, 10, 2, 22, TRUE, 0, complain_overflow_signed, 0, "PC22", FALSE, 0, 0x003fffff, TRUE), | |
199 | HOWTO (RELOC_JMP_TBL, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "JMP_TBL", FALSE, 0, 0x3fffffff, FALSE), | |
116c20d2 NC |
200 | HOWTO (RELOC_SEGOFF16,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "SEGOFF16", FALSE, 0, 0x00000000, FALSE), |
201 | HOWTO (RELOC_GLOB_DAT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "GLOB_DAT", FALSE, 0, 0x00000000, FALSE), | |
202 | HOWTO (RELOC_JMP_SLOT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "JMP_SLOT", FALSE, 0, 0x00000000, FALSE), | |
203 | HOWTO (RELOC_RELATIVE,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "RELATIVE", FALSE, 0, 0x00000000, FALSE), | |
07d6d2b8 AM |
204 | HOWTO (0, 0, 3, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE), |
205 | HOWTO (0, 0, 3, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE), | |
252b5132 | 206 | #define RELOC_SPARC_REV32 RELOC_WDISP19 |
07d6d2b8 | 207 | HOWTO (RELOC_SPARC_REV32, 0, 2, 32, FALSE, 0, complain_overflow_dont, 0,"R_SPARC_REV32",FALSE, 0, 0xffffffff, FALSE), |
252b5132 RH |
208 | }; |
209 | ||
210 | /* Convert standard reloc records to "arelent" format (incl byte swap). */ | |
211 | ||
5ed6aba4 NC |
212 | reloc_howto_type howto_table_std[] = |
213 | { | |
07d6d2b8 AM |
214 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */ |
215 | HOWTO ( 0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", TRUE, 0x000000ff,0x000000ff, FALSE), | |
216 | HOWTO ( 1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE), | |
217 | HOWTO ( 2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", TRUE, 0xffffffff,0xffffffff, FALSE), | |
218 | HOWTO ( 3, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,0,"64", TRUE, 0xdeaddead,0xdeaddead, FALSE), | |
219 | HOWTO ( 4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,"DISP8", TRUE, 0x000000ff,0x000000ff, FALSE), | |
220 | HOWTO ( 5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, FALSE), | |
221 | HOWTO ( 6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0,"DISP32", TRUE, 0xffffffff,0xffffffff, FALSE), | |
222 | HOWTO ( 7, 0, 4, 64, TRUE, 0, complain_overflow_signed, 0,"DISP64", TRUE, 0xfeedface,0xfeedface, FALSE), | |
223 | HOWTO ( 8, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"GOT_REL", FALSE, 0,0x00000000, FALSE), | |
224 | HOWTO ( 9, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"BASE16", FALSE,0xffffffff,0xffffffff, FALSE), | |
225 | HOWTO (10, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"BASE32", FALSE,0xffffffff,0xffffffff, FALSE), | |
5f771d47 ILT |
226 | EMPTY_HOWTO (-1), |
227 | EMPTY_HOWTO (-1), | |
228 | EMPTY_HOWTO (-1), | |
229 | EMPTY_HOWTO (-1), | |
230 | EMPTY_HOWTO (-1), | |
07d6d2b8 | 231 | HOWTO (16, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"JMP_TABLE", FALSE, 0,0x00000000, FALSE), |
5f771d47 ILT |
232 | EMPTY_HOWTO (-1), |
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), | |
07d6d2b8 | 247 | HOWTO (32, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"RELATIVE", FALSE, 0,0x00000000, FALSE), |
5f771d47 ILT |
248 | EMPTY_HOWTO (-1), |
249 | EMPTY_HOWTO (-1), | |
250 | EMPTY_HOWTO (-1), | |
251 | EMPTY_HOWTO (-1), | |
252 | EMPTY_HOWTO (-1), | |
253 | EMPTY_HOWTO (-1), | |
254 | EMPTY_HOWTO (-1), | |
07d6d2b8 | 255 | HOWTO (40, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"BASEREL", FALSE, 0,0x00000000, FALSE), |
252b5132 RH |
256 | }; |
257 | ||
923f08ff | 258 | #define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0])) |
252b5132 RH |
259 | |
260 | reloc_howto_type * | |
116c20d2 | 261 | NAME (aout, reloc_type_lookup) (bfd *abfd, bfd_reloc_code_real_type code) |
252b5132 | 262 | { |
116c20d2 NC |
263 | #define EXT(i, j) case i: return & howto_table_ext [j] |
264 | #define STD(i, j) case i: return & howto_table_std [j] | |
252b5132 | 265 | int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE; |
f7c33884 | 266 | |
252b5132 | 267 | if (code == BFD_RELOC_CTOR) |
30d10e9e | 268 | switch (bfd_arch_bits_per_address (abfd)) |
252b5132 RH |
269 | { |
270 | case 32: | |
271 | code = BFD_RELOC_32; | |
272 | break; | |
273 | case 64: | |
274 | code = BFD_RELOC_64; | |
275 | break; | |
276 | } | |
f7c33884 | 277 | |
252b5132 RH |
278 | if (ext) |
279 | switch (code) | |
280 | { | |
1642229e HPN |
281 | EXT (BFD_RELOC_8, 0); |
282 | EXT (BFD_RELOC_16, 1); | |
252b5132 RH |
283 | EXT (BFD_RELOC_32, 2); |
284 | EXT (BFD_RELOC_HI22, 8); | |
285 | EXT (BFD_RELOC_LO10, 11); | |
286 | EXT (BFD_RELOC_32_PCREL_S2, 6); | |
287 | EXT (BFD_RELOC_SPARC_WDISP22, 7); | |
288 | EXT (BFD_RELOC_SPARC13, 10); | |
289 | EXT (BFD_RELOC_SPARC_GOT10, 14); | |
290 | EXT (BFD_RELOC_SPARC_BASE13, 15); | |
291 | EXT (BFD_RELOC_SPARC_GOT13, 15); | |
292 | EXT (BFD_RELOC_SPARC_GOT22, 16); | |
293 | EXT (BFD_RELOC_SPARC_PC10, 17); | |
294 | EXT (BFD_RELOC_SPARC_PC22, 18); | |
295 | EXT (BFD_RELOC_SPARC_WPLT30, 19); | |
296 | EXT (BFD_RELOC_SPARC_REV32, 26); | |
116c20d2 NC |
297 | default: |
298 | return NULL; | |
252b5132 RH |
299 | } |
300 | else | |
f7c33884 | 301 | /* std relocs. */ |
252b5132 RH |
302 | switch (code) |
303 | { | |
2846975a | 304 | STD (BFD_RELOC_8, 0); |
252b5132 RH |
305 | STD (BFD_RELOC_16, 1); |
306 | STD (BFD_RELOC_32, 2); | |
307 | STD (BFD_RELOC_8_PCREL, 4); | |
308 | STD (BFD_RELOC_16_PCREL, 5); | |
309 | STD (BFD_RELOC_32_PCREL, 6); | |
310 | STD (BFD_RELOC_16_BASEREL, 9); | |
311 | STD (BFD_RELOC_32_BASEREL, 10); | |
116c20d2 NC |
312 | default: |
313 | return NULL; | |
252b5132 RH |
314 | } |
315 | } | |
316 | ||
157090f7 AM |
317 | reloc_howto_type * |
318 | NAME (aout, reloc_name_lookup) (bfd *abfd, const char *r_name) | |
319 | { | |
320 | unsigned int i, size; | |
321 | reloc_howto_type *howto_table; | |
322 | ||
323 | if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE) | |
324 | { | |
325 | howto_table = howto_table_ext; | |
326 | size = sizeof (howto_table_ext) / sizeof (howto_table_ext[0]); | |
327 | } | |
328 | else | |
329 | { | |
330 | howto_table = howto_table_std; | |
331 | size = sizeof (howto_table_std) / sizeof (howto_table_std[0]); | |
332 | } | |
333 | ||
334 | for (i = 0; i < size; i++) | |
335 | if (howto_table[i].name != NULL | |
336 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
337 | return &howto_table[i]; | |
338 | ||
339 | return NULL; | |
340 | } | |
341 | ||
252b5132 RH |
342 | /* |
343 | SUBSECTION | |
344 | Internal entry points | |
345 | ||
346 | DESCRIPTION | |
347 | @file{aoutx.h} exports several routines for accessing the | |
348 | contents of an a.out file, which are gathered and exported in | |
349 | turn by various format specific files (eg sunos.c). | |
252b5132 RH |
350 | */ |
351 | ||
352 | /* | |
353 | FUNCTION | |
354 | aout_@var{size}_swap_exec_header_in | |
355 | ||
356 | SYNOPSIS | |
357 | void aout_@var{size}_swap_exec_header_in, | |
07d6d2b8 AM |
358 | (bfd *abfd, |
359 | struct external_exec *bytes, | |
360 | struct internal_exec *execp); | |
252b5132 RH |
361 | |
362 | DESCRIPTION | |
363 | Swap the information in an executable header @var{raw_bytes} taken | |
364 | from a raw byte stream memory image into the internal exec header | |
365 | structure @var{execp}. | |
366 | */ | |
367 | ||
368 | #ifndef NAME_swap_exec_header_in | |
369 | void | |
116c20d2 NC |
370 | NAME (aout, swap_exec_header_in) (bfd *abfd, |
371 | struct external_exec *bytes, | |
372 | struct internal_exec *execp) | |
252b5132 | 373 | { |
252b5132 RH |
374 | /* The internal_exec structure has some fields that are unused in this |
375 | configuration (IE for i960), so ensure that all such uninitialized | |
376 | fields are zero'd out. There are places where two of these structs | |
0ef5a5bd | 377 | are memcmp'd, and thus the contents do matter. */ |
116c20d2 | 378 | memset ((void *) execp, 0, sizeof (struct internal_exec)); |
252b5132 | 379 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
dc810e39 | 380 | execp->a_info = H_GET_32 (abfd, bytes->e_info); |
252b5132 RH |
381 | execp->a_text = GET_WORD (abfd, bytes->e_text); |
382 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
383 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
384 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
385 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
386 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); | |
387 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
388 | } | |
116c20d2 | 389 | #define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in) |
252b5132 RH |
390 | #endif |
391 | ||
392 | /* | |
393 | FUNCTION | |
394 | aout_@var{size}_swap_exec_header_out | |
395 | ||
396 | SYNOPSIS | |
397 | void aout_@var{size}_swap_exec_header_out | |
398 | (bfd *abfd, | |
399 | struct internal_exec *execp, | |
400 | struct external_exec *raw_bytes); | |
401 | ||
402 | DESCRIPTION | |
403 | Swap the information in an internal exec header structure | |
404 | @var{execp} into the buffer @var{raw_bytes} ready for writing to disk. | |
405 | */ | |
406 | void | |
116c20d2 NC |
407 | NAME (aout, swap_exec_header_out) (bfd *abfd, |
408 | struct internal_exec *execp, | |
409 | struct external_exec *bytes) | |
252b5132 | 410 | { |
0ef5a5bd | 411 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ |
dc810e39 | 412 | H_PUT_32 (abfd, execp->a_info , bytes->e_info); |
252b5132 RH |
413 | PUT_WORD (abfd, execp->a_text , bytes->e_text); |
414 | PUT_WORD (abfd, execp->a_data , bytes->e_data); | |
415 | PUT_WORD (abfd, execp->a_bss , bytes->e_bss); | |
416 | PUT_WORD (abfd, execp->a_syms , bytes->e_syms); | |
417 | PUT_WORD (abfd, execp->a_entry , bytes->e_entry); | |
418 | PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); | |
419 | PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); | |
420 | } | |
421 | ||
422 | /* Make all the section for an a.out file. */ | |
423 | ||
b34976b6 | 424 | bfd_boolean |
116c20d2 | 425 | NAME (aout, make_sections) (bfd *abfd) |
252b5132 | 426 | { |
116c20d2 | 427 | if (obj_textsec (abfd) == NULL && bfd_make_section (abfd, ".text") == NULL) |
b34976b6 | 428 | return FALSE; |
116c20d2 | 429 | if (obj_datasec (abfd) == NULL && bfd_make_section (abfd, ".data") == NULL) |
b34976b6 | 430 | return FALSE; |
116c20d2 | 431 | if (obj_bsssec (abfd) == NULL && bfd_make_section (abfd, ".bss") == NULL) |
b34976b6 AM |
432 | return FALSE; |
433 | return TRUE; | |
252b5132 RH |
434 | } |
435 | ||
436 | /* | |
437 | FUNCTION | |
438 | aout_@var{size}_some_aout_object_p | |
439 | ||
440 | SYNOPSIS | |
441 | const bfd_target *aout_@var{size}_some_aout_object_p | |
442 | (bfd *abfd, | |
07d6d2b8 | 443 | struct internal_exec *execp, |
116c20d2 | 444 | const bfd_target *(*callback_to_real_object_p) (bfd *)); |
252b5132 RH |
445 | |
446 | DESCRIPTION | |
447 | Some a.out variant thinks that the file open in @var{abfd} | |
448 | checking is an a.out file. Do some more checking, and set up | |
449 | for access if it really is. Call back to the calling | |
450 | environment's "finish up" function just before returning, to | |
451 | handle any last-minute setup. | |
452 | */ | |
453 | ||
454 | const bfd_target * | |
116c20d2 NC |
455 | NAME (aout, some_aout_object_p) (bfd *abfd, |
456 | struct internal_exec *execp, | |
457 | const bfd_target *(*callback_to_real_object_p) (bfd *)) | |
252b5132 RH |
458 | { |
459 | struct aout_data_struct *rawptr, *oldrawptr; | |
460 | const bfd_target *result; | |
116c20d2 | 461 | bfd_size_type amt = sizeof (* rawptr); |
252b5132 | 462 | |
a50b1753 | 463 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt); |
252b5132 | 464 | if (rawptr == NULL) |
116c20d2 | 465 | return NULL; |
252b5132 RH |
466 | |
467 | oldrawptr = abfd->tdata.aout_data; | |
468 | abfd->tdata.aout_data = rawptr; | |
469 | ||
dc12032b | 470 | /* Copy the contents of the old tdata struct. */ |
252b5132 RH |
471 | if (oldrawptr != NULL) |
472 | *abfd->tdata.aout_data = *oldrawptr; | |
473 | ||
474 | abfd->tdata.aout_data->a.hdr = &rawptr->e; | |
f7c33884 NC |
475 | /* Copy in the internal_exec struct. */ |
476 | *(abfd->tdata.aout_data->a.hdr) = *execp; | |
252b5132 RH |
477 | execp = abfd->tdata.aout_data->a.hdr; |
478 | ||
f7c33884 | 479 | /* Set the file flags. */ |
252b5132 RH |
480 | abfd->flags = BFD_NO_FLAGS; |
481 | if (execp->a_drsize || execp->a_trsize) | |
482 | abfd->flags |= HAS_RELOC; | |
f7c33884 | 483 | /* Setting of EXEC_P has been deferred to the bottom of this function. */ |
252b5132 RH |
484 | if (execp->a_syms) |
485 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
bbb1afc8 | 486 | if (N_DYNAMIC (execp)) |
252b5132 RH |
487 | abfd->flags |= DYNAMIC; |
488 | ||
bbb1afc8 | 489 | if (N_MAGIC (execp) == ZMAGIC) |
252b5132 RH |
490 | { |
491 | abfd->flags |= D_PAGED | WP_TEXT; | |
492 | adata (abfd).magic = z_magic; | |
493 | } | |
bbb1afc8 | 494 | else if (N_MAGIC (execp) == QMAGIC) |
252b5132 RH |
495 | { |
496 | abfd->flags |= D_PAGED | WP_TEXT; | |
497 | adata (abfd).magic = z_magic; | |
498 | adata (abfd).subformat = q_magic_format; | |
499 | } | |
bbb1afc8 | 500 | else if (N_MAGIC (execp) == NMAGIC) |
252b5132 RH |
501 | { |
502 | abfd->flags |= WP_TEXT; | |
503 | adata (abfd).magic = n_magic; | |
504 | } | |
bbb1afc8 AM |
505 | else if (N_MAGIC (execp) == OMAGIC |
506 | || N_MAGIC (execp) == BMAGIC) | |
252b5132 RH |
507 | adata (abfd).magic = o_magic; |
508 | else | |
116c20d2 NC |
509 | /* Should have been checked with N_BADMAG before this routine |
510 | was called. */ | |
511 | abort (); | |
252b5132 RH |
512 | |
513 | bfd_get_start_address (abfd) = execp->a_entry; | |
514 | ||
116c20d2 | 515 | obj_aout_symbols (abfd) = NULL; |
252b5132 RH |
516 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); |
517 | ||
518 | /* The default relocation entry size is that of traditional V7 Unix. */ | |
519 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
520 | ||
0ef5a5bd | 521 | /* The default symbol entry size is that of traditional Unix. */ |
252b5132 RH |
522 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; |
523 | ||
524 | #ifdef USE_MMAP | |
525 | bfd_init_window (&obj_aout_sym_window (abfd)); | |
526 | bfd_init_window (&obj_aout_string_window (abfd)); | |
527 | #endif | |
528 | obj_aout_external_syms (abfd) = NULL; | |
529 | obj_aout_external_strings (abfd) = NULL; | |
530 | obj_aout_sym_hashes (abfd) = NULL; | |
531 | ||
116c20d2 | 532 | if (! NAME (aout, make_sections) (abfd)) |
487e54f2 | 533 | goto error_ret; |
252b5132 | 534 | |
eea6121a AM |
535 | obj_datasec (abfd)->size = execp->a_data; |
536 | obj_bsssec (abfd)->size = execp->a_bss; | |
252b5132 RH |
537 | |
538 | obj_textsec (abfd)->flags = | |
539 | (execp->a_trsize != 0 | |
540 | ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) | |
541 | : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); | |
542 | obj_datasec (abfd)->flags = | |
543 | (execp->a_drsize != 0 | |
544 | ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) | |
545 | : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); | |
546 | obj_bsssec (abfd)->flags = SEC_ALLOC; | |
547 | ||
548 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
549 | /* The common code can't fill in these things because they depend | |
550 | on either the start address of the text segment, the rounding | |
551 | up of virtual addresses between segments, or the starting file | |
552 | position of the text segment -- all of which varies among different | |
553 | versions of a.out. */ | |
554 | ||
555 | /* Call back to the format-dependent code to fill in the rest of the | |
556 | fields and do any further cleanup. Things that should be filled | |
557 | in by the callback: */ | |
558 | ||
559 | struct exec *execp = exec_hdr (abfd); | |
560 | ||
bbb1afc8 | 561 | obj_textsec (abfd)->size = N_TXTSIZE (execp); |
f7c33884 | 562 | /* Data and bss are already filled in since they're so standard. */ |
252b5132 | 563 | |
f7c33884 | 564 | /* The virtual memory addresses of the sections. */ |
bbb1afc8 AM |
565 | obj_textsec (abfd)->vma = N_TXTADDR (execp); |
566 | obj_datasec (abfd)->vma = N_DATADDR (execp); | |
567 | obj_bsssec (abfd)->vma = N_BSSADDR (execp); | |
252b5132 | 568 | |
f7c33884 | 569 | /* The file offsets of the sections. */ |
bbb1afc8 AM |
570 | obj_textsec (abfd)->filepos = N_TXTOFF (execp); |
571 | obj_datasec (abfd)->filepos = N_DATOFF (execp); | |
252b5132 | 572 | |
f7c33884 | 573 | /* The file offsets of the relocation info. */ |
bbb1afc8 AM |
574 | obj_textsec (abfd)->rel_filepos = N_TRELOFF (execp); |
575 | obj_datasec (abfd)->rel_filepos = N_DRELOFF (execp); | |
252b5132 RH |
576 | |
577 | /* The file offsets of the string table and symbol table. */ | |
bbb1afc8 AM |
578 | obj_str_filepos (abfd) = N_STROFF (execp); |
579 | obj_sym_filepos (abfd) = N_SYMOFF (execp); | |
252b5132 RH |
580 | |
581 | /* Determine the architecture and machine type of the object file. */ | |
bbb1afc8 | 582 | switch (N_MACHTYPE (exec_hdr (abfd))) |
923f08ff AM |
583 | { |
584 | default: | |
585 | abfd->obj_arch = bfd_arch_obscure; | |
586 | break; | |
587 | } | |
252b5132 | 588 | |
923f08ff AM |
589 | adata (abfd)->page_size = TARGET_PAGE_SIZE; |
590 | adata (abfd)->segment_size = SEGMENT_SIZE; | |
591 | adata (abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
252b5132 RH |
592 | |
593 | return abfd->xvec; | |
594 | ||
595 | /* The architecture is encoded in various ways in various a.out variants, | |
596 | or is not encoded at all in some of them. The relocation size depends | |
597 | on the architecture and the a.out variant. Finally, the return value | |
598 | is the bfd_target vector in use. If an error occurs, return zero and | |
599 | set bfd_error to the appropriate error code. | |
600 | ||
601 | Formats such as b.out, which have additional fields in the a.out | |
602 | header, should cope with them in this callback as well. */ | |
603 | #endif /* DOCUMENTATION */ | |
604 | ||
beb0d161 | 605 | result = (*callback_to_real_object_p) (abfd); |
252b5132 RH |
606 | |
607 | /* Now that the segment addresses have been worked out, take a better | |
608 | guess at whether the file is executable. If the entry point | |
609 | is within the text segment, assume it is. (This makes files | |
610 | executable even if their entry point address is 0, as long as | |
611 | their text starts at zero.). | |
612 | ||
613 | This test had to be changed to deal with systems where the text segment | |
614 | runs at a different location than the default. The problem is that the | |
615 | entry address can appear to be outside the text segment, thus causing an | |
616 | erroneous conclusion that the file isn't executable. | |
617 | ||
618 | To fix this, we now accept any non-zero entry point as an indication of | |
619 | executability. This will work most of the time, since only the linker | |
0ef5a5bd | 620 | sets the entry point, and that is likely to be non-zero for most systems. */ |
252b5132 RH |
621 | |
622 | if (execp->a_entry != 0 | |
923f08ff AM |
623 | || (execp->a_entry >= obj_textsec (abfd)->vma |
624 | && execp->a_entry < (obj_textsec (abfd)->vma | |
4c1534c7 AM |
625 | + obj_textsec (abfd)->size) |
626 | && execp->a_trsize == 0 | |
627 | && execp->a_drsize == 0)) | |
252b5132 RH |
628 | abfd->flags |= EXEC_P; |
629 | #ifdef STAT_FOR_EXEC | |
630 | else | |
631 | { | |
632 | struct stat stat_buf; | |
633 | ||
634 | /* The original heuristic doesn't work in some important cases. | |
07d6d2b8 AM |
635 | The a.out file has no information about the text start |
636 | address. For files (like kernels) linked to non-standard | |
637 | addresses (ld -Ttext nnn) the entry point may not be between | |
638 | the default text start (obj_textsec(abfd)->vma) and | |
639 | (obj_textsec(abfd)->vma) + text size. This is not just a mach | |
640 | issue. Many kernels are loaded at non standard addresses. */ | |
252b5132 RH |
641 | if (abfd->iostream != NULL |
642 | && (abfd->flags & BFD_IN_MEMORY) == 0 | |
923f08ff | 643 | && (fstat (fileno ((FILE *) (abfd->iostream)), &stat_buf) == 0) |
252b5132 RH |
644 | && ((stat_buf.st_mode & 0111) != 0)) |
645 | abfd->flags |= EXEC_P; | |
646 | } | |
647 | #endif /* STAT_FOR_EXEC */ | |
648 | ||
649 | if (result) | |
0e71e495 | 650 | return result; |
487e54f2 AM |
651 | |
652 | error_ret: | |
653 | bfd_release (abfd, rawptr); | |
654 | abfd->tdata.aout_data = oldrawptr; | |
655 | return NULL; | |
252b5132 RH |
656 | } |
657 | ||
658 | /* | |
659 | FUNCTION | |
660 | aout_@var{size}_mkobject | |
661 | ||
662 | SYNOPSIS | |
b34976b6 | 663 | bfd_boolean aout_@var{size}_mkobject, (bfd *abfd); |
252b5132 RH |
664 | |
665 | DESCRIPTION | |
666 | Initialize BFD @var{abfd} for use with a.out files. | |
667 | */ | |
668 | ||
b34976b6 | 669 | bfd_boolean |
116c20d2 | 670 | NAME (aout, mkobject) (bfd *abfd) |
252b5132 | 671 | { |
dc810e39 | 672 | struct aout_data_struct *rawptr; |
116c20d2 | 673 | bfd_size_type amt = sizeof (* rawptr); |
252b5132 RH |
674 | |
675 | bfd_set_error (bfd_error_system_call); | |
676 | ||
a50b1753 | 677 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt); |
252b5132 | 678 | if (rawptr == NULL) |
b34976b6 | 679 | return FALSE; |
252b5132 RH |
680 | |
681 | abfd->tdata.aout_data = rawptr; | |
682 | exec_hdr (abfd) = &(rawptr->e); | |
683 | ||
116c20d2 NC |
684 | obj_textsec (abfd) = NULL; |
685 | obj_datasec (abfd) = NULL; | |
686 | obj_bsssec (abfd) = NULL; | |
252b5132 | 687 | |
b34976b6 | 688 | return TRUE; |
252b5132 RH |
689 | } |
690 | ||
252b5132 RH |
691 | /* |
692 | FUNCTION | |
693 | aout_@var{size}_machine_type | |
694 | ||
695 | SYNOPSIS | |
696 | enum machine_type aout_@var{size}_machine_type | |
697 | (enum bfd_architecture arch, | |
116c20d2 | 698 | unsigned long machine, |
07d6d2b8 | 699 | bfd_boolean *unknown); |
252b5132 RH |
700 | |
701 | DESCRIPTION | |
702 | Keep track of machine architecture and machine type for | |
703 | a.out's. Return the <<machine_type>> for a particular | |
704 | architecture and machine, or <<M_UNKNOWN>> if that exact architecture | |
705 | and machine can't be represented in a.out format. | |
706 | ||
707 | If the architecture is understood, machine type 0 (default) | |
708 | is always understood. | |
709 | */ | |
710 | ||
711 | enum machine_type | |
116c20d2 NC |
712 | NAME (aout, machine_type) (enum bfd_architecture arch, |
713 | unsigned long machine, | |
714 | bfd_boolean *unknown) | |
252b5132 RH |
715 | { |
716 | enum machine_type arch_flags; | |
717 | ||
718 | arch_flags = M_UNKNOWN; | |
b34976b6 | 719 | *unknown = TRUE; |
252b5132 | 720 | |
923f08ff AM |
721 | switch (arch) |
722 | { | |
723 | case bfd_arch_sparc: | |
724 | if (machine == 0 | |
725 | || machine == bfd_mach_sparc | |
726 | || machine == bfd_mach_sparc_sparclite | |
727 | || machine == bfd_mach_sparc_sparclite_le | |
74d26813 L |
728 | || machine == bfd_mach_sparc_v8plus |
729 | || machine == bfd_mach_sparc_v8plusa | |
730 | || machine == bfd_mach_sparc_v8plusb | |
07d6d2b8 AM |
731 | || machine == bfd_mach_sparc_v8plusc |
732 | || machine == bfd_mach_sparc_v8plusd | |
733 | || machine == bfd_mach_sparc_v8pluse | |
734 | || machine == bfd_mach_sparc_v8plusv | |
735 | || machine == bfd_mach_sparc_v8plusm | |
736 | || machine == bfd_mach_sparc_v8plusm8 | |
74d26813 L |
737 | || machine == bfd_mach_sparc_v9 |
738 | || machine == bfd_mach_sparc_v9a | |
4f26fb3a | 739 | || machine == bfd_mach_sparc_v9b |
07d6d2b8 AM |
740 | || machine == bfd_mach_sparc_v9c |
741 | || machine == bfd_mach_sparc_v9d | |
742 | || machine == bfd_mach_sparc_v9e | |
743 | || machine == bfd_mach_sparc_v9v | |
64517994 | 744 | || machine == bfd_mach_sparc_v9m |
07d6d2b8 | 745 | || machine == bfd_mach_sparc_v9m8) |
923f08ff AM |
746 | arch_flags = M_SPARC; |
747 | else if (machine == bfd_mach_sparc_sparclet) | |
748 | arch_flags = M_SPARCLET; | |
749 | break; | |
750 | ||
923f08ff | 751 | case bfd_arch_i386: |
3b77b1d5 AM |
752 | if (machine == 0 |
753 | || machine == bfd_mach_i386_i386 | |
754 | || machine == bfd_mach_i386_i386_intel_syntax) | |
923f08ff | 755 | arch_flags = M_386; |
252b5132 | 756 | break; |
923f08ff | 757 | |
923f08ff AM |
758 | case bfd_arch_arm: |
759 | if (machine == 0) | |
760 | arch_flags = M_ARM; | |
252b5132 | 761 | break; |
252b5132 | 762 | |
923f08ff AM |
763 | case bfd_arch_mips: |
764 | switch (machine) | |
765 | { | |
766 | case 0: | |
767 | case bfd_mach_mips3000: | |
768 | case bfd_mach_mips3900: | |
769 | arch_flags = M_MIPS1; | |
770 | break; | |
771 | case bfd_mach_mips6000: | |
772 | arch_flags = M_MIPS2; | |
773 | break; | |
774 | case bfd_mach_mips4000: | |
775 | case bfd_mach_mips4010: | |
776 | case bfd_mach_mips4100: | |
777 | case bfd_mach_mips4300: | |
778 | case bfd_mach_mips4400: | |
779 | case bfd_mach_mips4600: | |
780 | case bfd_mach_mips4650: | |
781 | case bfd_mach_mips8000: | |
0d2e43ed | 782 | case bfd_mach_mips9000: |
923f08ff AM |
783 | case bfd_mach_mips10000: |
784 | case bfd_mach_mips12000: | |
3aa3176b TS |
785 | case bfd_mach_mips14000: |
786 | case bfd_mach_mips16000: | |
923f08ff AM |
787 | case bfd_mach_mips16: |
788 | case bfd_mach_mipsisa32: | |
af7ee8bf | 789 | case bfd_mach_mipsisa32r2: |
ae52f483 AB |
790 | case bfd_mach_mipsisa32r3: |
791 | case bfd_mach_mipsisa32r5: | |
7361da2c | 792 | case bfd_mach_mipsisa32r6: |
923f08ff AM |
793 | case bfd_mach_mips5: |
794 | case bfd_mach_mipsisa64: | |
5f74bc13 | 795 | case bfd_mach_mipsisa64r2: |
ae52f483 AB |
796 | case bfd_mach_mipsisa64r3: |
797 | case bfd_mach_mipsisa64r5: | |
7361da2c | 798 | case bfd_mach_mipsisa64r6: |
923f08ff | 799 | case bfd_mach_mips_sb1: |
52b6b6b9 | 800 | case bfd_mach_mips_xlr: |
923f08ff AM |
801 | /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */ |
802 | arch_flags = M_MIPS2; | |
803 | break; | |
804 | default: | |
805 | arch_flags = M_UNKNOWN; | |
806 | break; | |
807 | } | |
808 | break; | |
809 | ||
810 | case bfd_arch_ns32k: | |
811 | switch (machine) | |
812 | { | |
07d6d2b8 | 813 | case 0: arch_flags = M_NS32532; break; |
923f08ff AM |
814 | case 32032: arch_flags = M_NS32032; break; |
815 | case 32532: arch_flags = M_NS32532; break; | |
816 | default: arch_flags = M_UNKNOWN; break; | |
817 | } | |
818 | break; | |
252b5132 | 819 | |
923f08ff | 820 | case bfd_arch_vax: |
b34976b6 | 821 | *unknown = FALSE; |
923f08ff | 822 | break; |
06c15ad7 | 823 | |
923f08ff AM |
824 | case bfd_arch_cris: |
825 | if (machine == 0 || machine == 255) | |
826 | arch_flags = M_CRIS; | |
827 | break; | |
828 | ||
829 | default: | |
830 | arch_flags = M_UNKNOWN; | |
831 | } | |
252b5132 RH |
832 | |
833 | if (arch_flags != M_UNKNOWN) | |
b34976b6 | 834 | *unknown = FALSE; |
252b5132 RH |
835 | |
836 | return arch_flags; | |
837 | } | |
838 | ||
252b5132 RH |
839 | /* |
840 | FUNCTION | |
841 | aout_@var{size}_set_arch_mach | |
842 | ||
843 | SYNOPSIS | |
b34976b6 | 844 | bfd_boolean aout_@var{size}_set_arch_mach, |
252b5132 RH |
845 | (bfd *, |
846 | enum bfd_architecture arch, | |
116c20d2 | 847 | unsigned long machine); |
252b5132 RH |
848 | |
849 | DESCRIPTION | |
850 | Set the architecture and the machine of the BFD @var{abfd} to the | |
851 | values @var{arch} and @var{machine}. Verify that @var{abfd}'s format | |
852 | can support the architecture required. | |
853 | */ | |
854 | ||
b34976b6 | 855 | bfd_boolean |
116c20d2 NC |
856 | NAME (aout, set_arch_mach) (bfd *abfd, |
857 | enum bfd_architecture arch, | |
858 | unsigned long machine) | |
252b5132 RH |
859 | { |
860 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) | |
b34976b6 | 861 | return FALSE; |
252b5132 RH |
862 | |
863 | if (arch != bfd_arch_unknown) | |
864 | { | |
b34976b6 | 865 | bfd_boolean unknown; |
252b5132 | 866 | |
116c20d2 | 867 | NAME (aout, machine_type) (arch, machine, &unknown); |
252b5132 | 868 | if (unknown) |
b34976b6 | 869 | return FALSE; |
252b5132 RH |
870 | } |
871 | ||
f7c33884 | 872 | /* Determine the size of a relocation entry. */ |
923f08ff AM |
873 | switch (arch) |
874 | { | |
875 | case bfd_arch_sparc: | |
923f08ff AM |
876 | case bfd_arch_mips: |
877 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; | |
878 | break; | |
879 | default: | |
880 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
881 | break; | |
882 | } | |
252b5132 | 883 | |
923f08ff | 884 | return (*aout_backend_info (abfd)->set_sizes) (abfd); |
252b5132 RH |
885 | } |
886 | ||
887 | static void | |
116c20d2 | 888 | adjust_o_magic (bfd *abfd, struct internal_exec *execp) |
252b5132 RH |
889 | { |
890 | file_ptr pos = adata (abfd).exec_bytes_size; | |
891 | bfd_vma vma = 0; | |
892 | int pad = 0; | |
893 | ||
894 | /* Text. */ | |
923f08ff AM |
895 | obj_textsec (abfd)->filepos = pos; |
896 | if (!obj_textsec (abfd)->user_set_vma) | |
897 | obj_textsec (abfd)->vma = vma; | |
252b5132 | 898 | else |
923f08ff | 899 | vma = obj_textsec (abfd)->vma; |
252b5132 | 900 | |
eea6121a AM |
901 | pos += obj_textsec (abfd)->size; |
902 | vma += obj_textsec (abfd)->size; | |
252b5132 RH |
903 | |
904 | /* Data. */ | |
923f08ff | 905 | if (!obj_datasec (abfd)->user_set_vma) |
252b5132 | 906 | { |
eea6121a | 907 | obj_textsec (abfd)->size += pad; |
252b5132 RH |
908 | pos += pad; |
909 | vma += pad; | |
923f08ff | 910 | obj_datasec (abfd)->vma = vma; |
252b5132 RH |
911 | } |
912 | else | |
923f08ff AM |
913 | vma = obj_datasec (abfd)->vma; |
914 | obj_datasec (abfd)->filepos = pos; | |
eea6121a AM |
915 | pos += obj_datasec (abfd)->size; |
916 | vma += obj_datasec (abfd)->size; | |
252b5132 RH |
917 | |
918 | /* BSS. */ | |
923f08ff | 919 | if (!obj_bsssec (abfd)->user_set_vma) |
252b5132 | 920 | { |
eea6121a | 921 | obj_datasec (abfd)->size += pad; |
252b5132 RH |
922 | pos += pad; |
923 | vma += pad; | |
923f08ff | 924 | obj_bsssec (abfd)->vma = vma; |
252b5132 RH |
925 | } |
926 | else | |
927 | { | |
08da05b0 | 928 | /* The VMA of the .bss section is set by the VMA of the |
07d6d2b8 AM |
929 | .data section plus the size of the .data section. We may |
930 | need to add padding bytes to make this true. */ | |
252b5132 RH |
931 | pad = obj_bsssec (abfd)->vma - vma; |
932 | if (pad > 0) | |
933 | { | |
eea6121a | 934 | obj_datasec (abfd)->size += pad; |
252b5132 RH |
935 | pos += pad; |
936 | } | |
937 | } | |
923f08ff | 938 | obj_bsssec (abfd)->filepos = pos; |
252b5132 RH |
939 | |
940 | /* Fix up the exec header. */ | |
eea6121a AM |
941 | execp->a_text = obj_textsec (abfd)->size; |
942 | execp->a_data = obj_datasec (abfd)->size; | |
943 | execp->a_bss = obj_bsssec (abfd)->size; | |
bbb1afc8 | 944 | N_SET_MAGIC (execp, OMAGIC); |
252b5132 RH |
945 | } |
946 | ||
947 | static void | |
116c20d2 | 948 | adjust_z_magic (bfd *abfd, struct internal_exec *execp) |
252b5132 RH |
949 | { |
950 | bfd_size_type data_pad, text_pad; | |
951 | file_ptr text_end; | |
dc810e39 | 952 | const struct aout_backend_data *abdp; |
116c20d2 NC |
953 | /* TRUE if text includes exec header. */ |
954 | bfd_boolean ztih; | |
0ef5a5bd | 955 | |
252b5132 RH |
956 | abdp = aout_backend_info (abfd); |
957 | ||
958 | /* Text. */ | |
959 | ztih = (abdp != NULL | |
960 | && (abdp->text_includes_header | |
961 | || obj_aout_subformat (abfd) == q_magic_format)); | |
923f08ff AM |
962 | obj_textsec (abfd)->filepos = (ztih |
963 | ? adata (abfd).exec_bytes_size | |
964 | : adata (abfd).zmagic_disk_block_size); | |
965 | if (! obj_textsec (abfd)->user_set_vma) | |
252b5132 RH |
966 | { |
967 | /* ?? Do we really need to check for relocs here? */ | |
923f08ff AM |
968 | obj_textsec (abfd)->vma = ((abfd->flags & HAS_RELOC) |
969 | ? 0 | |
970 | : (ztih | |
971 | ? (abdp->default_text_vma | |
972 | + adata (abfd).exec_bytes_size) | |
973 | : abdp->default_text_vma)); | |
252b5132 RH |
974 | text_pad = 0; |
975 | } | |
976 | else | |
977 | { | |
978 | /* The .text section is being loaded at an unusual address. We | |
07d6d2b8 AM |
979 | may need to pad it such that the .data section starts at a page |
980 | boundary. */ | |
252b5132 RH |
981 | if (ztih) |
982 | text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma) | |
983 | & (adata (abfd).page_size - 1)); | |
984 | else | |
985 | text_pad = ((- obj_textsec (abfd)->vma) | |
986 | & (adata (abfd).page_size - 1)); | |
987 | } | |
988 | ||
989 | /* Find start of data. */ | |
990 | if (ztih) | |
991 | { | |
eea6121a | 992 | text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->size; |
252b5132 RH |
993 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
994 | } | |
995 | else | |
996 | { | |
997 | /* Note that if page_size == zmagic_disk_block_size, then | |
998 | filepos == page_size, and this case is the same as the ztih | |
999 | case. */ | |
eea6121a | 1000 | text_end = obj_textsec (abfd)->size; |
252b5132 RH |
1001 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
1002 | text_end += obj_textsec (abfd)->filepos; | |
1003 | } | |
eea6121a | 1004 | obj_textsec (abfd)->size += text_pad; |
252b5132 RH |
1005 | text_end += text_pad; |
1006 | ||
1007 | /* Data. */ | |
923f08ff | 1008 | if (!obj_datasec (abfd)->user_set_vma) |
252b5132 RH |
1009 | { |
1010 | bfd_vma vma; | |
eea6121a | 1011 | vma = obj_textsec (abfd)->vma + obj_textsec (abfd)->size; |
923f08ff | 1012 | obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size); |
252b5132 RH |
1013 | } |
1014 | if (abdp && abdp->zmagic_mapped_contiguous) | |
1015 | { | |
dee0a8f4 NC |
1016 | asection * text = obj_textsec (abfd); |
1017 | asection * data = obj_datasec (abfd); | |
1018 | ||
eea6121a | 1019 | text_pad = data->vma - (text->vma + text->size); |
dee0a8f4 NC |
1020 | /* Only pad the text section if the data |
1021 | section is going to be placed after it. */ | |
1022 | if (text_pad > 0) | |
eea6121a | 1023 | text->size += text_pad; |
252b5132 | 1024 | } |
923f08ff | 1025 | obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos |
eea6121a | 1026 | + obj_textsec (abfd)->size); |
0ef5a5bd | 1027 | |
252b5132 | 1028 | /* Fix up exec header while we're at it. */ |
eea6121a | 1029 | execp->a_text = obj_textsec (abfd)->size; |
252b5132 | 1030 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) |
923f08ff | 1031 | execp->a_text += adata (abfd).exec_bytes_size; |
252b5132 | 1032 | if (obj_aout_subformat (abfd) == q_magic_format) |
bbb1afc8 | 1033 | N_SET_MAGIC (execp, QMAGIC); |
252b5132 | 1034 | else |
bbb1afc8 | 1035 | N_SET_MAGIC (execp, ZMAGIC); |
252b5132 RH |
1036 | |
1037 | /* Spec says data section should be rounded up to page boundary. */ | |
eea6121a AM |
1038 | obj_datasec (abfd)->size |
1039 | = align_power (obj_datasec (abfd)->size, | |
923f08ff | 1040 | obj_bsssec (abfd)->alignment_power); |
eea6121a | 1041 | execp->a_data = BFD_ALIGN (obj_datasec (abfd)->size, |
923f08ff | 1042 | adata (abfd).page_size); |
eea6121a | 1043 | data_pad = execp->a_data - obj_datasec (abfd)->size; |
252b5132 RH |
1044 | |
1045 | /* BSS. */ | |
923f08ff AM |
1046 | if (!obj_bsssec (abfd)->user_set_vma) |
1047 | obj_bsssec (abfd)->vma = (obj_datasec (abfd)->vma | |
eea6121a | 1048 | + obj_datasec (abfd)->size); |
252b5132 RH |
1049 | /* If the BSS immediately follows the data section and extra space |
1050 | in the page is left after the data section, fudge data | |
1051 | in the header so that the bss section looks smaller by that | |
1052 | amount. We'll start the bss section there, and lie to the OS. | |
1053 | (Note that a linker script, as well as the above assignment, | |
1054 | could have explicitly set the BSS vma to immediately follow | |
1055 | the data section.) */ | |
923f08ff | 1056 | if (align_power (obj_bsssec (abfd)->vma, obj_bsssec (abfd)->alignment_power) |
eea6121a AM |
1057 | == obj_datasec (abfd)->vma + obj_datasec (abfd)->size) |
1058 | execp->a_bss = (data_pad > obj_bsssec (abfd)->size | |
1059 | ? 0 : obj_bsssec (abfd)->size - data_pad); | |
252b5132 | 1060 | else |
eea6121a | 1061 | execp->a_bss = obj_bsssec (abfd)->size; |
252b5132 RH |
1062 | } |
1063 | ||
1064 | static void | |
116c20d2 | 1065 | adjust_n_magic (bfd *abfd, struct internal_exec *execp) |
252b5132 | 1066 | { |
923f08ff | 1067 | file_ptr pos = adata (abfd).exec_bytes_size; |
252b5132 RH |
1068 | bfd_vma vma = 0; |
1069 | int pad; | |
0ef5a5bd | 1070 | |
252b5132 | 1071 | /* Text. */ |
923f08ff AM |
1072 | obj_textsec (abfd)->filepos = pos; |
1073 | if (!obj_textsec (abfd)->user_set_vma) | |
1074 | obj_textsec (abfd)->vma = vma; | |
252b5132 | 1075 | else |
923f08ff | 1076 | vma = obj_textsec (abfd)->vma; |
eea6121a AM |
1077 | pos += obj_textsec (abfd)->size; |
1078 | vma += obj_textsec (abfd)->size; | |
252b5132 RH |
1079 | |
1080 | /* Data. */ | |
923f08ff AM |
1081 | obj_datasec (abfd)->filepos = pos; |
1082 | if (!obj_datasec (abfd)->user_set_vma) | |
1083 | obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size); | |
1084 | vma = obj_datasec (abfd)->vma; | |
0ef5a5bd | 1085 | |
252b5132 | 1086 | /* Since BSS follows data immediately, see if it needs alignment. */ |
eea6121a | 1087 | vma += obj_datasec (abfd)->size; |
923f08ff | 1088 | pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma; |
eea6121a AM |
1089 | obj_datasec (abfd)->size += pad; |
1090 | pos += obj_datasec (abfd)->size; | |
252b5132 RH |
1091 | |
1092 | /* BSS. */ | |
923f08ff AM |
1093 | if (!obj_bsssec (abfd)->user_set_vma) |
1094 | obj_bsssec (abfd)->vma = vma; | |
252b5132 | 1095 | else |
923f08ff | 1096 | vma = obj_bsssec (abfd)->vma; |
252b5132 RH |
1097 | |
1098 | /* Fix up exec header. */ | |
eea6121a AM |
1099 | execp->a_text = obj_textsec (abfd)->size; |
1100 | execp->a_data = obj_datasec (abfd)->size; | |
1101 | execp->a_bss = obj_bsssec (abfd)->size; | |
bbb1afc8 | 1102 | N_SET_MAGIC (execp, NMAGIC); |
252b5132 RH |
1103 | } |
1104 | ||
b34976b6 | 1105 | bfd_boolean |
3a8c4a5b | 1106 | NAME (aout, adjust_sizes_and_vmas) (bfd *abfd) |
252b5132 RH |
1107 | { |
1108 | struct internal_exec *execp = exec_hdr (abfd); | |
1109 | ||
116c20d2 | 1110 | if (! NAME (aout, make_sections) (abfd)) |
b34976b6 | 1111 | return FALSE; |
252b5132 | 1112 | |
923f08ff | 1113 | if (adata (abfd).magic != undecided_magic) |
b34976b6 | 1114 | return TRUE; |
252b5132 | 1115 | |
eea6121a AM |
1116 | obj_textsec (abfd)->size = |
1117 | align_power (obj_textsec (abfd)->size, | |
923f08ff | 1118 | obj_textsec (abfd)->alignment_power); |
252b5132 | 1119 | |
252b5132 RH |
1120 | /* Rule (heuristic) for when to pad to a new page. Note that there |
1121 | are (at least) two ways demand-paged (ZMAGIC) files have been | |
1122 | handled. Most Berkeley-based systems start the text segment at | |
1123 | (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text | |
1124 | segment right after the exec header; the latter is counted in the | |
1125 | text segment size, and is paged in by the kernel with the rest of | |
0ef5a5bd | 1126 | the text. */ |
252b5132 RH |
1127 | |
1128 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1129 | to understand enough to implement it. Better would probably be to go | |
1130 | right from BFD flags to alignment/positioning characteristics. But the | |
1131 | old code was sloppy enough about handling the flags, and had enough | |
1132 | other magic, that it was a little hard for me to understand. I think | |
1133 | I understand it better now, but I haven't time to do the cleanup this | |
1134 | minute. */ | |
1135 | ||
1136 | if (abfd->flags & D_PAGED) | |
1137 | /* Whether or not WP_TEXT is set -- let D_PAGED override. */ | |
923f08ff | 1138 | adata (abfd).magic = z_magic; |
252b5132 | 1139 | else if (abfd->flags & WP_TEXT) |
923f08ff | 1140 | adata (abfd).magic = n_magic; |
252b5132 | 1141 | else |
923f08ff | 1142 | adata (abfd).magic = o_magic; |
252b5132 RH |
1143 | |
1144 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1145 | #if __GNUC__ >= 2 | |
1146 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1147 | ({ char *str; | |
923f08ff AM |
1148 | switch (adata (abfd).magic) |
1149 | { | |
1150 | case n_magic: str = "NMAGIC"; break; | |
1151 | case o_magic: str = "OMAGIC"; break; | |
1152 | case z_magic: str = "ZMAGIC"; break; | |
1153 | default: abort (); | |
1154 | } | |
252b5132 RH |
1155 | str; |
1156 | }), | |
eea6121a | 1157 | obj_textsec (abfd)->vma, obj_textsec (abfd)->size, |
07d6d2b8 | 1158 | obj_textsec (abfd)->alignment_power, |
eea6121a | 1159 | obj_datasec (abfd)->vma, obj_datasec (abfd)->size, |
07d6d2b8 | 1160 | obj_datasec (abfd)->alignment_power, |
eea6121a | 1161 | obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size, |
07d6d2b8 | 1162 | obj_bsssec (abfd)->alignment_power); |
252b5132 RH |
1163 | #endif |
1164 | #endif | |
1165 | ||
923f08ff | 1166 | switch (adata (abfd).magic) |
252b5132 RH |
1167 | { |
1168 | case o_magic: | |
1169 | adjust_o_magic (abfd, execp); | |
1170 | break; | |
1171 | case z_magic: | |
1172 | adjust_z_magic (abfd, execp); | |
1173 | break; | |
1174 | case n_magic: | |
1175 | adjust_n_magic (abfd, execp); | |
1176 | break; | |
1177 | default: | |
1178 | abort (); | |
1179 | } | |
1180 | ||
1181 | #ifdef BFD_AOUT_DEBUG | |
1182 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
eea6121a | 1183 | obj_textsec (abfd)->vma, obj_textsec (abfd)->size, |
07d6d2b8 | 1184 | obj_textsec (abfd)->filepos, |
eea6121a | 1185 | obj_datasec (abfd)->vma, obj_datasec (abfd)->size, |
07d6d2b8 | 1186 | obj_datasec (abfd)->filepos, |
eea6121a | 1187 | obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size); |
252b5132 RH |
1188 | #endif |
1189 | ||
b34976b6 | 1190 | return TRUE; |
252b5132 RH |
1191 | } |
1192 | ||
1193 | /* | |
1194 | FUNCTION | |
1195 | aout_@var{size}_new_section_hook | |
1196 | ||
1197 | SYNOPSIS | |
07d6d2b8 | 1198 | bfd_boolean aout_@var{size}_new_section_hook, |
252b5132 | 1199 | (bfd *abfd, |
116c20d2 | 1200 | asection *newsect); |
252b5132 RH |
1201 | |
1202 | DESCRIPTION | |
1203 | Called by the BFD in response to a @code{bfd_make_section} | |
1204 | request. | |
1205 | */ | |
b34976b6 | 1206 | bfd_boolean |
116c20d2 | 1207 | NAME (aout, new_section_hook) (bfd *abfd, asection *newsect) |
252b5132 | 1208 | { |
f7c33884 | 1209 | /* Align to double at least. */ |
923f08ff | 1210 | newsect->alignment_power = bfd_get_arch_info (abfd)->section_align_power; |
252b5132 | 1211 | |
252b5132 | 1212 | if (bfd_get_format (abfd) == bfd_object) |
f7c33884 NC |
1213 | { |
1214 | if (obj_textsec (abfd) == NULL && !strcmp (newsect->name, ".text")) | |
1215 | { | |
1216 | obj_textsec (abfd)= newsect; | |
1217 | newsect->target_index = N_TEXT; | |
f7c33884 | 1218 | } |
f592407e | 1219 | else if (obj_datasec (abfd) == NULL && !strcmp (newsect->name, ".data")) |
f7c33884 NC |
1220 | { |
1221 | obj_datasec (abfd) = newsect; | |
1222 | newsect->target_index = N_DATA; | |
f7c33884 | 1223 | } |
f592407e | 1224 | else if (obj_bsssec (abfd) == NULL && !strcmp (newsect->name, ".bss")) |
f7c33884 NC |
1225 | { |
1226 | obj_bsssec (abfd) = newsect; | |
1227 | newsect->target_index = N_BSS; | |
f7c33884 NC |
1228 | } |
1229 | } | |
252b5132 | 1230 | |
f7c33884 | 1231 | /* We allow more than three sections internally. */ |
f592407e | 1232 | return _bfd_generic_new_section_hook (abfd, newsect); |
252b5132 RH |
1233 | } |
1234 | ||
b34976b6 | 1235 | bfd_boolean |
116c20d2 NC |
1236 | NAME (aout, set_section_contents) (bfd *abfd, |
1237 | sec_ptr section, | |
1238 | const void * location, | |
1239 | file_ptr offset, | |
1240 | bfd_size_type count) | |
252b5132 | 1241 | { |
252b5132 RH |
1242 | if (! abfd->output_has_begun) |
1243 | { | |
3a8c4a5b | 1244 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
b34976b6 | 1245 | return FALSE; |
252b5132 RH |
1246 | } |
1247 | ||
1248 | if (section == obj_bsssec (abfd)) | |
1249 | { | |
1250 | bfd_set_error (bfd_error_no_contents); | |
b34976b6 | 1251 | return FALSE; |
252b5132 RH |
1252 | } |
1253 | ||
1254 | if (section != obj_textsec (abfd) | |
1255 | && section != obj_datasec (abfd)) | |
1256 | { | |
e6af3a53 NC |
1257 | if (aout_section_merge_with_text_p (abfd, section)) |
1258 | section->filepos = obj_textsec (abfd)->filepos + | |
1259 | (section->vma - obj_textsec (abfd)->vma); | |
1260 | else | |
1261 | { | |
4eca0228 | 1262 | _bfd_error_handler |
695344c0 | 1263 | /* xgettext:c-format */ |
871b3ab2 | 1264 | (_("%pB: can not represent section `%pA' in a.out object file format"), |
dae82561 | 1265 | abfd, section); |
07d6d2b8 AM |
1266 | bfd_set_error (bfd_error_nonrepresentable_section); |
1267 | return FALSE; | |
e6af3a53 | 1268 | } |
252b5132 RH |
1269 | } |
1270 | ||
1271 | if (count != 0) | |
1272 | { | |
1273 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 | |
dc810e39 | 1274 | || bfd_bwrite (location, count, abfd) != count) |
b34976b6 | 1275 | return FALSE; |
252b5132 RH |
1276 | } |
1277 | ||
b34976b6 | 1278 | return TRUE; |
252b5132 RH |
1279 | } |
1280 | \f | |
1281 | /* Read the external symbols from an a.out file. */ | |
1282 | ||
b34976b6 | 1283 | static bfd_boolean |
116c20d2 | 1284 | aout_get_external_symbols (bfd *abfd) |
252b5132 | 1285 | { |
116c20d2 | 1286 | if (obj_aout_external_syms (abfd) == NULL) |
252b5132 RH |
1287 | { |
1288 | bfd_size_type count; | |
1289 | struct external_nlist *syms; | |
7c53fd1c | 1290 | bfd_size_type amt = exec_hdr (abfd)->a_syms; |
252b5132 | 1291 | |
7c53fd1c | 1292 | count = amt / EXTERNAL_NLIST_SIZE; |
6b8f0fd5 MS |
1293 | if (count == 0) |
1294 | return TRUE; /* Nothing to do. */ | |
252b5132 RH |
1295 | |
1296 | #ifdef USE_MMAP | |
7c53fd1c | 1297 | if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), amt, |
b34976b6 AM |
1298 | &obj_aout_sym_window (abfd), TRUE)) |
1299 | return FALSE; | |
252b5132 RH |
1300 | syms = (struct external_nlist *) obj_aout_sym_window (abfd).data; |
1301 | #else | |
1302 | /* We allocate using malloc to make the values easy to free | |
1303 | later on. If we put them on the objalloc it might not be | |
1304 | possible to free them. */ | |
7c53fd1c | 1305 | syms = (struct external_nlist *) bfd_malloc (amt); |
6b8f0fd5 | 1306 | if (syms == NULL) |
b34976b6 | 1307 | return FALSE; |
252b5132 | 1308 | |
7c53fd1c AM |
1309 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 |
1310 | || bfd_bread (syms, amt, abfd) != amt) | |
1311 | { | |
1312 | free (syms); | |
1313 | return FALSE; | |
1314 | } | |
252b5132 RH |
1315 | #endif |
1316 | ||
1317 | obj_aout_external_syms (abfd) = syms; | |
1318 | obj_aout_external_sym_count (abfd) = count; | |
1319 | } | |
0ef5a5bd | 1320 | |
252b5132 RH |
1321 | if (obj_aout_external_strings (abfd) == NULL |
1322 | && exec_hdr (abfd)->a_syms != 0) | |
1323 | { | |
1324 | unsigned char string_chars[BYTES_IN_WORD]; | |
1325 | bfd_size_type stringsize; | |
1326 | char *strings; | |
dc810e39 | 1327 | bfd_size_type amt = BYTES_IN_WORD; |
252b5132 RH |
1328 | |
1329 | /* Get the size of the strings. */ | |
1330 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
116c20d2 | 1331 | || bfd_bread ((void *) string_chars, amt, abfd) != amt) |
b34976b6 | 1332 | return FALSE; |
252b5132 | 1333 | stringsize = GET_WORD (abfd, string_chars); |
0301ce14 AM |
1334 | if (stringsize == 0) |
1335 | stringsize = 1; | |
1336 | else if (stringsize < BYTES_IN_WORD | |
1337 | || (size_t) stringsize != stringsize) | |
1338 | { | |
1339 | bfd_set_error (bfd_error_bad_value); | |
1340 | return FALSE; | |
1341 | } | |
252b5132 RH |
1342 | |
1343 | #ifdef USE_MMAP | |
0301ce14 | 1344 | if (stringsize >= BYTES_IN_WORD) |
252b5132 | 1345 | { |
bf82069d | 1346 | if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize + 1, |
0301ce14 AM |
1347 | &obj_aout_string_window (abfd), TRUE)) |
1348 | return FALSE; | |
1349 | strings = (char *) obj_aout_string_window (abfd).data; | |
252b5132 | 1350 | } |
0301ce14 | 1351 | else |
252b5132 | 1352 | #endif |
0301ce14 | 1353 | { |
bf82069d | 1354 | strings = (char *) bfd_malloc (stringsize + 1); |
0301ce14 AM |
1355 | if (strings == NULL) |
1356 | return FALSE; | |
1357 | ||
1358 | if (stringsize >= BYTES_IN_WORD) | |
1359 | { | |
1360 | /* Keep the string count in the buffer for convenience | |
1361 | when indexing with e_strx. */ | |
1362 | amt = stringsize - BYTES_IN_WORD; | |
1363 | if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt) | |
1364 | { | |
1365 | free (strings); | |
1366 | return FALSE; | |
1367 | } | |
1368 | } | |
1369 | } | |
252b5132 RH |
1370 | /* Ensure that a zero index yields an empty string. */ |
1371 | strings[0] = '\0'; | |
1372 | ||
bf82069d NC |
1373 | /* Ensure that the string buffer is NUL terminated. */ |
1374 | strings[stringsize] = 0; | |
252b5132 RH |
1375 | |
1376 | obj_aout_external_strings (abfd) = strings; | |
1377 | obj_aout_external_string_size (abfd) = stringsize; | |
1378 | } | |
1379 | ||
b34976b6 | 1380 | return TRUE; |
252b5132 RH |
1381 | } |
1382 | ||
1383 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type | |
1384 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1385 | nlist structure. This function is responsible for setting | |
1386 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
1387 | ||
b34976b6 | 1388 | static bfd_boolean |
116c20d2 | 1389 | translate_from_native_sym_flags (bfd *abfd, aout_symbol_type *cache_ptr) |
252b5132 RH |
1390 | { |
1391 | flagword visible; | |
1392 | ||
1393 | if ((cache_ptr->type & N_STAB) != 0 | |
1394 | || cache_ptr->type == N_FN) | |
1395 | { | |
1396 | asection *sec; | |
1397 | ||
1398 | /* This is a debugging symbol. */ | |
252b5132 RH |
1399 | cache_ptr->symbol.flags = BSF_DEBUGGING; |
1400 | ||
1401 | /* Work out the symbol section. */ | |
1402 | switch (cache_ptr->type & N_TYPE) | |
1403 | { | |
1404 | case N_TEXT: | |
1405 | case N_FN: | |
1406 | sec = obj_textsec (abfd); | |
1407 | break; | |
1408 | case N_DATA: | |
1409 | sec = obj_datasec (abfd); | |
1410 | break; | |
1411 | case N_BSS: | |
1412 | sec = obj_bsssec (abfd); | |
1413 | break; | |
1414 | default: | |
1415 | case N_ABS: | |
1416 | sec = bfd_abs_section_ptr; | |
1417 | break; | |
1418 | } | |
1419 | ||
1420 | cache_ptr->symbol.section = sec; | |
1421 | cache_ptr->symbol.value -= sec->vma; | |
1422 | ||
b34976b6 | 1423 | return TRUE; |
252b5132 RH |
1424 | } |
1425 | ||
1426 | /* Get the default visibility. This does not apply to all types, so | |
1427 | we just hold it in a local variable to use if wanted. */ | |
1428 | if ((cache_ptr->type & N_EXT) == 0) | |
1429 | visible = BSF_LOCAL; | |
1430 | else | |
1431 | visible = BSF_GLOBAL; | |
1432 | ||
1433 | switch (cache_ptr->type) | |
1434 | { | |
1435 | default: | |
1436 | case N_ABS: case N_ABS | N_EXT: | |
1437 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1438 | cache_ptr->symbol.flags = visible; | |
1439 | break; | |
1440 | ||
1441 | case N_UNDF | N_EXT: | |
1442 | if (cache_ptr->symbol.value != 0) | |
1443 | { | |
1444 | /* This is a common symbol. */ | |
1445 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
1446 | cache_ptr->symbol.section = bfd_com_section_ptr; | |
1447 | } | |
1448 | else | |
1449 | { | |
1450 | cache_ptr->symbol.flags = 0; | |
1451 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1452 | } | |
1453 | break; | |
1454 | ||
1455 | case N_TEXT: case N_TEXT | N_EXT: | |
1456 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1457 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1458 | cache_ptr->symbol.flags = visible; | |
1459 | break; | |
1460 | ||
1461 | /* N_SETV symbols used to represent set vectors placed in the | |
1462 | data section. They are no longer generated. Theoretically, | |
1463 | it was possible to extract the entries and combine them with | |
1464 | new ones, although I don't know if that was ever actually | |
1465 | done. Unless that feature is restored, treat them as data | |
1466 | symbols. */ | |
1467 | case N_SETV: case N_SETV | N_EXT: | |
1468 | case N_DATA: case N_DATA | N_EXT: | |
1469 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1470 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1471 | cache_ptr->symbol.flags = visible; | |
1472 | break; | |
1473 | ||
1474 | case N_BSS: case N_BSS | N_EXT: | |
1475 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1476 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1477 | cache_ptr->symbol.flags = visible; | |
1478 | break; | |
1479 | ||
1480 | case N_SETA: case N_SETA | N_EXT: | |
1481 | case N_SETT: case N_SETT | N_EXT: | |
1482 | case N_SETD: case N_SETD | N_EXT: | |
1483 | case N_SETB: case N_SETB | N_EXT: | |
1484 | { | |
1485 | /* This code is no longer needed. It used to be used to make | |
07d6d2b8 AM |
1486 | the linker handle set symbols, but they are now handled in |
1487 | the add_symbols routine instead. */ | |
252b5132 RH |
1488 | switch (cache_ptr->type & N_TYPE) |
1489 | { | |
1490 | case N_SETA: | |
1491 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1492 | break; | |
1493 | case N_SETT: | |
1494 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1495 | break; | |
1496 | case N_SETD: | |
1497 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1498 | break; | |
1499 | case N_SETB: | |
1500 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1501 | break; | |
1502 | } | |
1503 | ||
1504 | cache_ptr->symbol.flags |= BSF_CONSTRUCTOR; | |
1505 | } | |
1506 | break; | |
1507 | ||
1508 | case N_WARNING: | |
1509 | /* This symbol is the text of a warning message. The next | |
1510 | symbol is the symbol to associate the warning with. If a | |
1511 | reference is made to that symbol, a warning is issued. */ | |
1512 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
1513 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1514 | break; | |
1515 | ||
1516 | case N_INDR: case N_INDR | N_EXT: | |
1517 | /* An indirect symbol. This consists of two symbols in a row. | |
1518 | The first symbol is the name of the indirection. The second | |
1519 | symbol is the name of the target. A reference to the first | |
1520 | symbol becomes a reference to the second. */ | |
1521 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible; | |
1522 | cache_ptr->symbol.section = bfd_ind_section_ptr; | |
1523 | break; | |
1524 | ||
1525 | case N_WEAKU: | |
1526 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1527 | cache_ptr->symbol.flags = BSF_WEAK; | |
1528 | break; | |
1529 | ||
1530 | case N_WEAKA: | |
1531 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1532 | cache_ptr->symbol.flags = BSF_WEAK; | |
1533 | break; | |
1534 | ||
1535 | case N_WEAKT: | |
1536 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1537 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1538 | cache_ptr->symbol.flags = BSF_WEAK; | |
1539 | break; | |
1540 | ||
1541 | case N_WEAKD: | |
1542 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1543 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1544 | cache_ptr->symbol.flags = BSF_WEAK; | |
1545 | break; | |
1546 | ||
1547 | case N_WEAKB: | |
1548 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1549 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1550 | cache_ptr->symbol.flags = BSF_WEAK; | |
1551 | break; | |
1552 | } | |
1553 | ||
b34976b6 | 1554 | return TRUE; |
252b5132 RH |
1555 | } |
1556 | ||
1557 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ | |
1558 | ||
b34976b6 | 1559 | static bfd_boolean |
116c20d2 NC |
1560 | translate_to_native_sym_flags (bfd *abfd, |
1561 | asymbol *cache_ptr, | |
1562 | struct external_nlist *sym_pointer) | |
252b5132 RH |
1563 | { |
1564 | bfd_vma value = cache_ptr->value; | |
1565 | asection *sec; | |
1566 | bfd_vma off; | |
1567 | ||
1568 | /* Mask out any existing type bits in case copying from one section | |
1569 | to another. */ | |
1570 | sym_pointer->e_type[0] &= ~N_TYPE; | |
1571 | ||
1572 | sec = bfd_get_section (cache_ptr); | |
1573 | off = 0; | |
1574 | ||
1575 | if (sec == NULL) | |
1576 | { | |
1577 | /* This case occurs, e.g., for the *DEBUG* section of a COFF | |
1578 | file. */ | |
4eca0228 | 1579 | _bfd_error_handler |
695344c0 | 1580 | /* xgettext:c-format */ |
871b3ab2 | 1581 | (_("%pB: can not represent section for symbol `%s' in a.out " |
4eca0228 | 1582 | "object file format"), |
dae82561 | 1583 | abfd, |
252b5132 RH |
1584 | cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*")); |
1585 | bfd_set_error (bfd_error_nonrepresentable_section); | |
b34976b6 | 1586 | return FALSE; |
252b5132 RH |
1587 | } |
1588 | ||
1589 | if (sec->output_section != NULL) | |
1590 | { | |
1591 | off = sec->output_offset; | |
1592 | sec = sec->output_section; | |
1593 | } | |
1594 | ||
1595 | if (bfd_is_abs_section (sec)) | |
1596 | sym_pointer->e_type[0] |= N_ABS; | |
1597 | else if (sec == obj_textsec (abfd)) | |
1598 | sym_pointer->e_type[0] |= N_TEXT; | |
1599 | else if (sec == obj_datasec (abfd)) | |
1600 | sym_pointer->e_type[0] |= N_DATA; | |
1601 | else if (sec == obj_bsssec (abfd)) | |
1602 | sym_pointer->e_type[0] |= N_BSS; | |
1603 | else if (bfd_is_und_section (sec)) | |
1604 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1605 | else if (bfd_is_ind_section (sec)) | |
1606 | sym_pointer->e_type[0] = N_INDR; | |
1607 | else if (bfd_is_com_section (sec)) | |
1608 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1609 | else | |
1610 | { | |
e6af3a53 NC |
1611 | if (aout_section_merge_with_text_p (abfd, sec)) |
1612 | sym_pointer->e_type[0] |= N_TEXT; | |
1613 | else | |
1614 | { | |
4eca0228 | 1615 | _bfd_error_handler |
695344c0 | 1616 | /* xgettext:c-format */ |
871b3ab2 | 1617 | (_("%pB: can not represent section `%pA' in a.out object file format"), |
dae82561 | 1618 | abfd, sec); |
07d6d2b8 AM |
1619 | bfd_set_error (bfd_error_nonrepresentable_section); |
1620 | return FALSE; | |
e6af3a53 | 1621 | } |
252b5132 RH |
1622 | } |
1623 | ||
f7c33884 | 1624 | /* Turn the symbol from section relative to absolute again. */ |
252b5132 RH |
1625 | value += sec->vma + off; |
1626 | ||
1627 | if ((cache_ptr->flags & BSF_WARNING) != 0) | |
1628 | sym_pointer->e_type[0] = N_WARNING; | |
1629 | ||
1630 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) | |
1631 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1632 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
1633 | sym_pointer->e_type[0] |= N_EXT; | |
930d924d L |
1634 | else if ((cache_ptr->flags & BSF_LOCAL) != 0) |
1635 | sym_pointer->e_type[0] &= ~N_EXT; | |
252b5132 RH |
1636 | |
1637 | if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0) | |
1638 | { | |
1639 | int type = ((aout_symbol_type *) cache_ptr)->type; | |
f7c33884 | 1640 | |
252b5132 RH |
1641 | switch (type) |
1642 | { | |
1643 | case N_ABS: type = N_SETA; break; | |
1644 | case N_TEXT: type = N_SETT; break; | |
1645 | case N_DATA: type = N_SETD; break; | |
1646 | case N_BSS: type = N_SETB; break; | |
1647 | } | |
1648 | sym_pointer->e_type[0] = type; | |
1649 | } | |
1650 | ||
1651 | if ((cache_ptr->flags & BSF_WEAK) != 0) | |
1652 | { | |
1653 | int type; | |
1654 | ||
1655 | switch (sym_pointer->e_type[0] & N_TYPE) | |
1656 | { | |
1657 | default: | |
1658 | case N_ABS: type = N_WEAKA; break; | |
1659 | case N_TEXT: type = N_WEAKT; break; | |
1660 | case N_DATA: type = N_WEAKD; break; | |
1661 | case N_BSS: type = N_WEAKB; break; | |
1662 | case N_UNDF: type = N_WEAKU; break; | |
1663 | } | |
1664 | sym_pointer->e_type[0] = type; | |
1665 | } | |
1666 | ||
923f08ff | 1667 | PUT_WORD (abfd, value, sym_pointer->e_value); |
252b5132 | 1668 | |
b34976b6 | 1669 | return TRUE; |
252b5132 RH |
1670 | } |
1671 | \f | |
0ef5a5bd | 1672 | /* Native-level interface to symbols. */ |
252b5132 RH |
1673 | |
1674 | asymbol * | |
116c20d2 | 1675 | NAME (aout, make_empty_symbol) (bfd *abfd) |
252b5132 | 1676 | { |
dc810e39 | 1677 | bfd_size_type amt = sizeof (aout_symbol_type); |
116c20d2 | 1678 | |
d3ce72d0 NC |
1679 | aout_symbol_type *new_symbol = (aout_symbol_type *) bfd_zalloc (abfd, amt); |
1680 | if (!new_symbol) | |
252b5132 | 1681 | return NULL; |
d3ce72d0 | 1682 | new_symbol->symbol.the_bfd = abfd; |
252b5132 | 1683 | |
d3ce72d0 | 1684 | return &new_symbol->symbol; |
252b5132 RH |
1685 | } |
1686 | ||
1687 | /* Translate a set of internal symbols into external symbols. */ | |
1688 | ||
b34976b6 | 1689 | bfd_boolean |
116c20d2 NC |
1690 | NAME (aout, translate_symbol_table) (bfd *abfd, |
1691 | aout_symbol_type *in, | |
1692 | struct external_nlist *ext, | |
1693 | bfd_size_type count, | |
1694 | char *str, | |
1695 | bfd_size_type strsize, | |
1696 | bfd_boolean dynamic) | |
252b5132 RH |
1697 | { |
1698 | struct external_nlist *ext_end; | |
1699 | ||
1700 | ext_end = ext + count; | |
1701 | for (; ext < ext_end; ext++, in++) | |
1702 | { | |
1703 | bfd_vma x; | |
1704 | ||
1705 | x = GET_WORD (abfd, ext->e_strx); | |
1706 | in->symbol.the_bfd = abfd; | |
1707 | ||
1708 | /* For the normal symbols, the zero index points at the number | |
1709 | of bytes in the string table but is to be interpreted as the | |
1710 | null string. For the dynamic symbols, the number of bytes in | |
1711 | the string table is stored in the __DYNAMIC structure and the | |
1712 | zero index points at an actual string. */ | |
1713 | if (x == 0 && ! dynamic) | |
1714 | in->symbol.name = ""; | |
1715 | else if (x < strsize) | |
1716 | in->symbol.name = str + x; | |
1717 | else | |
0d329c0a AM |
1718 | { |
1719 | _bfd_error_handler | |
1720 | (_("%pB: invalid string offset %" PRIu64 " >= %" PRIu64), | |
1721 | abfd, (uint64_t) x, (uint64_t) strsize); | |
1722 | bfd_set_error (bfd_error_bad_value); | |
1723 | return FALSE; | |
1724 | } | |
252b5132 RH |
1725 | |
1726 | in->symbol.value = GET_SWORD (abfd, ext->e_value); | |
dc810e39 AM |
1727 | in->desc = H_GET_16 (abfd, ext->e_desc); |
1728 | in->other = H_GET_8 (abfd, ext->e_other); | |
1729 | in->type = H_GET_8 (abfd, ext->e_type); | |
252b5132 RH |
1730 | in->symbol.udata.p = NULL; |
1731 | ||
1732 | if (! translate_from_native_sym_flags (abfd, in)) | |
b34976b6 | 1733 | return FALSE; |
252b5132 RH |
1734 | |
1735 | if (dynamic) | |
1736 | in->symbol.flags |= BSF_DYNAMIC; | |
1737 | } | |
1738 | ||
b34976b6 | 1739 | return TRUE; |
252b5132 RH |
1740 | } |
1741 | ||
1742 | /* We read the symbols into a buffer, which is discarded when this | |
1743 | function exits. We read the strings into a buffer large enough to | |
0ef5a5bd | 1744 | hold them all plus all the cached symbol entries. */ |
252b5132 | 1745 | |
b34976b6 | 1746 | bfd_boolean |
116c20d2 | 1747 | NAME (aout, slurp_symbol_table) (bfd *abfd) |
252b5132 RH |
1748 | { |
1749 | struct external_nlist *old_external_syms; | |
1750 | aout_symbol_type *cached; | |
dc810e39 | 1751 | bfd_size_type cached_size; |
252b5132 | 1752 | |
f7c33884 | 1753 | /* If there's no work to be done, don't do any. */ |
116c20d2 | 1754 | if (obj_aout_symbols (abfd) != NULL) |
b34976b6 | 1755 | return TRUE; |
252b5132 RH |
1756 | |
1757 | old_external_syms = obj_aout_external_syms (abfd); | |
1758 | ||
1759 | if (! aout_get_external_symbols (abfd)) | |
b34976b6 | 1760 | return FALSE; |
252b5132 | 1761 | |
dc810e39 | 1762 | cached_size = obj_aout_external_sym_count (abfd); |
87b32780 MS |
1763 | if (cached_size == 0) |
1764 | return TRUE; /* Nothing to do. */ | |
1765 | ||
dc810e39 | 1766 | cached_size *= sizeof (aout_symbol_type); |
a50b1753 | 1767 | cached = (aout_symbol_type *) bfd_zmalloc (cached_size); |
87b32780 | 1768 | if (cached == NULL) |
b34976b6 | 1769 | return FALSE; |
252b5132 RH |
1770 | |
1771 | /* Convert from external symbol information to internal. */ | |
116c20d2 | 1772 | if (! (NAME (aout, translate_symbol_table) |
252b5132 RH |
1773 | (abfd, cached, |
1774 | obj_aout_external_syms (abfd), | |
1775 | obj_aout_external_sym_count (abfd), | |
1776 | obj_aout_external_strings (abfd), | |
1777 | obj_aout_external_string_size (abfd), | |
b34976b6 | 1778 | FALSE))) |
252b5132 RH |
1779 | { |
1780 | free (cached); | |
b34976b6 | 1781 | return FALSE; |
252b5132 RH |
1782 | } |
1783 | ||
1784 | bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd); | |
1785 | ||
1786 | obj_aout_symbols (abfd) = cached; | |
1787 | ||
1788 | /* It is very likely that anybody who calls this function will not | |
1789 | want the external symbol information, so if it was allocated | |
1790 | because of our call to aout_get_external_symbols, we free it up | |
1791 | right away to save space. */ | |
116c20d2 NC |
1792 | if (old_external_syms == NULL |
1793 | && obj_aout_external_syms (abfd) != NULL) | |
252b5132 RH |
1794 | { |
1795 | #ifdef USE_MMAP | |
1796 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
1797 | #else | |
1798 | free (obj_aout_external_syms (abfd)); | |
1799 | #endif | |
1800 | obj_aout_external_syms (abfd) = NULL; | |
1801 | } | |
1802 | ||
b34976b6 | 1803 | return TRUE; |
252b5132 RH |
1804 | } |
1805 | \f | |
1806 | /* We use a hash table when writing out symbols so that we only write | |
1807 | out a particular string once. This helps particularly when the | |
1808 | linker writes out stabs debugging entries, because each different | |
1809 | contributing object file tends to have many duplicate stabs | |
1810 | strings. | |
1811 | ||
1812 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it | |
1813 | if BFD_TRADITIONAL_FORMAT is set. */ | |
1814 | ||
252b5132 RH |
1815 | /* Get the index of a string in a strtab, adding it if it is not |
1816 | already present. */ | |
1817 | ||
116c20d2 NC |
1818 | static inline bfd_size_type |
1819 | add_to_stringtab (bfd *abfd, | |
1820 | struct bfd_strtab_hash *tab, | |
1821 | const char *str, | |
1822 | bfd_boolean copy) | |
252b5132 | 1823 | { |
b34976b6 | 1824 | bfd_boolean hash; |
91d6fa6a | 1825 | bfd_size_type str_index; |
252b5132 RH |
1826 | |
1827 | /* An index of 0 always means the empty string. */ | |
1828 | if (str == 0 || *str == '\0') | |
1829 | return 0; | |
1830 | ||
1831 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx | |
1832 | doesn't understand a hashed string table. */ | |
b34976b6 | 1833 | hash = TRUE; |
252b5132 | 1834 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
b34976b6 | 1835 | hash = FALSE; |
252b5132 | 1836 | |
91d6fa6a | 1837 | str_index = _bfd_stringtab_add (tab, str, hash, copy); |
252b5132 | 1838 | |
91d6fa6a | 1839 | if (str_index != (bfd_size_type) -1) |
116c20d2 NC |
1840 | /* Add BYTES_IN_WORD to the return value to account for the |
1841 | space taken up by the string table size. */ | |
91d6fa6a | 1842 | str_index += BYTES_IN_WORD; |
252b5132 | 1843 | |
91d6fa6a | 1844 | return str_index; |
252b5132 RH |
1845 | } |
1846 | ||
1847 | /* Write out a strtab. ABFD is already at the right location in the | |
1848 | file. */ | |
1849 | ||
b34976b6 | 1850 | static bfd_boolean |
116c20d2 | 1851 | emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab) |
252b5132 RH |
1852 | { |
1853 | bfd_byte buffer[BYTES_IN_WORD]; | |
dc810e39 | 1854 | bfd_size_type amt = BYTES_IN_WORD; |
252b5132 RH |
1855 | |
1856 | /* The string table starts with the size. */ | |
1857 | PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer); | |
116c20d2 | 1858 | if (bfd_bwrite ((void *) buffer, amt, abfd) != amt) |
b34976b6 | 1859 | return FALSE; |
252b5132 RH |
1860 | |
1861 | return _bfd_stringtab_emit (abfd, tab); | |
1862 | } | |
1863 | \f | |
b34976b6 | 1864 | bfd_boolean |
116c20d2 | 1865 | NAME (aout, write_syms) (bfd *abfd) |
252b5132 RH |
1866 | { |
1867 | unsigned int count ; | |
1868 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1869 | struct bfd_strtab_hash *strtab; | |
1870 | ||
1871 | strtab = _bfd_stringtab_init (); | |
1872 | if (strtab == NULL) | |
b34976b6 | 1873 | return FALSE; |
252b5132 RH |
1874 | |
1875 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1876 | { | |
1877 | asymbol *g = generic[count]; | |
1878 | bfd_size_type indx; | |
1879 | struct external_nlist nsp; | |
dc810e39 | 1880 | bfd_size_type amt; |
252b5132 | 1881 | |
b34976b6 | 1882 | indx = add_to_stringtab (abfd, strtab, g->name, FALSE); |
252b5132 RH |
1883 | if (indx == (bfd_size_type) -1) |
1884 | goto error_return; | |
1885 | PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx); | |
1886 | ||
923f08ff | 1887 | if (bfd_asymbol_flavour (g) == abfd->xvec->flavour) |
252b5132 | 1888 | { |
923f08ff AM |
1889 | H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc); |
1890 | H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other); | |
1891 | H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type); | |
252b5132 RH |
1892 | } |
1893 | else | |
1894 | { | |
dc810e39 AM |
1895 | H_PUT_16 (abfd, 0, nsp.e_desc); |
1896 | H_PUT_8 (abfd, 0, nsp.e_other); | |
1897 | H_PUT_8 (abfd, 0, nsp.e_type); | |
252b5132 RH |
1898 | } |
1899 | ||
1900 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) | |
1901 | goto error_return; | |
1902 | ||
dc810e39 | 1903 | amt = EXTERNAL_NLIST_SIZE; |
116c20d2 | 1904 | if (bfd_bwrite ((void *) &nsp, amt, abfd) != amt) |
252b5132 RH |
1905 | goto error_return; |
1906 | ||
1907 | /* NB: `KEEPIT' currently overlays `udata.p', so set this only | |
1908 | here, at the end. */ | |
1909 | g->KEEPIT = count; | |
1910 | } | |
1911 | ||
1912 | if (! emit_stringtab (abfd, strtab)) | |
1913 | goto error_return; | |
1914 | ||
1915 | _bfd_stringtab_free (strtab); | |
1916 | ||
b34976b6 | 1917 | return TRUE; |
252b5132 RH |
1918 | |
1919 | error_return: | |
1920 | _bfd_stringtab_free (strtab); | |
b34976b6 | 1921 | return FALSE; |
252b5132 | 1922 | } |
252b5132 RH |
1923 | \f |
1924 | long | |
116c20d2 | 1925 | NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location) |
252b5132 | 1926 | { |
116c20d2 NC |
1927 | unsigned int counter = 0; |
1928 | aout_symbol_type *symbase; | |
252b5132 | 1929 | |
116c20d2 NC |
1930 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
1931 | return -1; | |
252b5132 | 1932 | |
116c20d2 NC |
1933 | for (symbase = obj_aout_symbols (abfd); |
1934 | counter++ < bfd_get_symcount (abfd); | |
1935 | ) | |
1936 | *(location++) = (asymbol *) (symbase++); | |
1937 | *location++ =0; | |
1938 | return bfd_get_symcount (abfd); | |
252b5132 | 1939 | } |
252b5132 | 1940 | \f |
f7c33884 | 1941 | /* Standard reloc stuff. */ |
0ef5a5bd | 1942 | /* Output standard relocation information to a file in target byte order. */ |
252b5132 | 1943 | |
116c20d2 NC |
1944 | extern void NAME (aout, swap_std_reloc_out) |
1945 | (bfd *, arelent *, struct reloc_std_external *); | |
252b5132 RH |
1946 | |
1947 | void | |
116c20d2 NC |
1948 | NAME (aout, swap_std_reloc_out) (bfd *abfd, |
1949 | arelent *g, | |
1950 | struct reloc_std_external *natptr) | |
252b5132 RH |
1951 | { |
1952 | int r_index; | |
1953 | asymbol *sym = *(g->sym_ptr_ptr); | |
1954 | int r_extern; | |
1955 | unsigned int r_length; | |
1956 | int r_pcrel; | |
1957 | int r_baserel, r_jmptable, r_relative; | |
1958 | asection *output_section = sym->section->output_section; | |
1959 | ||
923f08ff | 1960 | PUT_WORD (abfd, g->address, natptr->r_address); |
252b5132 | 1961 | |
e2996cc3 | 1962 | BFD_ASSERT (g->howto != NULL); |
f7c33884 NC |
1963 | r_length = g->howto->size ; /* Size as a power of two. */ |
1964 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
252b5132 RH |
1965 | /* XXX This relies on relocs coming from a.out files. */ |
1966 | r_baserel = (g->howto->type & 8) != 0; | |
1967 | r_jmptable = (g->howto->type & 16) != 0; | |
1968 | r_relative = (g->howto->type & 32) != 0; | |
1969 | ||
f7c33884 | 1970 | /* Name was clobbered by aout_write_syms to be symbol index. */ |
252b5132 RH |
1971 | |
1972 | /* If this relocation is relative to a symbol then set the | |
1973 | r_index to the symbols index, and the r_extern bit. | |
1974 | ||
1975 | Absolute symbols can come in in two ways, either as an offset | |
1976 | from the abs section, or as a symbol which has an abs value. | |
f7c33884 | 1977 | check for that here. */ |
252b5132 | 1978 | |
252b5132 RH |
1979 | if (bfd_is_com_section (output_section) |
1980 | || bfd_is_abs_section (output_section) | |
22184a77 NC |
1981 | || bfd_is_und_section (output_section) |
1982 | /* PR gas/3041 a.out relocs against weak symbols | |
1983 | must be treated as if they were against externs. */ | |
1984 | || (sym->flags & BSF_WEAK)) | |
252b5132 RH |
1985 | { |
1986 | if (bfd_abs_section_ptr->symbol == sym) | |
f7c33884 NC |
1987 | { |
1988 | /* Whoops, looked like an abs symbol, but is | |
1989 | really an offset from the abs section. */ | |
1990 | r_index = N_ABS; | |
1991 | r_extern = 0; | |
1992 | } | |
252b5132 | 1993 | else |
f7c33884 NC |
1994 | { |
1995 | /* Fill in symbol. */ | |
1996 | r_extern = 1; | |
1997 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
1998 | } | |
252b5132 RH |
1999 | } |
2000 | else | |
2001 | { | |
f7c33884 | 2002 | /* Just an ordinary section. */ |
252b5132 RH |
2003 | r_extern = 0; |
2004 | r_index = output_section->target_index; | |
2005 | } | |
2006 | ||
f7c33884 | 2007 | /* Now the fun stuff. */ |
923f08ff AM |
2008 | if (bfd_header_big_endian (abfd)) |
2009 | { | |
252b5132 RH |
2010 | natptr->r_index[0] = r_index >> 16; |
2011 | natptr->r_index[1] = r_index >> 8; | |
2012 | natptr->r_index[2] = r_index; | |
923f08ff AM |
2013 | natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) |
2014 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
2015 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
2016 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
2017 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
2018 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
2019 | } | |
2020 | else | |
2021 | { | |
2022 | natptr->r_index[2] = r_index >> 16; | |
2023 | natptr->r_index[1] = r_index >> 8; | |
2024 | natptr->r_index[0] = r_index; | |
2025 | natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
2026 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
2027 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
2028 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
2029 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
2030 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
2031 | } | |
252b5132 RH |
2032 | } |
2033 | ||
f7c33884 | 2034 | /* Extended stuff. */ |
0ef5a5bd | 2035 | /* Output extended relocation information to a file in target byte order. */ |
252b5132 | 2036 | |
116c20d2 NC |
2037 | extern void NAME (aout, swap_ext_reloc_out) |
2038 | (bfd *, arelent *, struct reloc_ext_external *); | |
252b5132 RH |
2039 | |
2040 | void | |
116c20d2 NC |
2041 | NAME (aout, swap_ext_reloc_out) (bfd *abfd, |
2042 | arelent *g, | |
2043 | struct reloc_ext_external *natptr) | |
252b5132 RH |
2044 | { |
2045 | int r_index; | |
2046 | int r_extern; | |
2047 | unsigned int r_type; | |
dc810e39 | 2048 | bfd_vma r_addend; |
252b5132 RH |
2049 | asymbol *sym = *(g->sym_ptr_ptr); |
2050 | asection *output_section = sym->section->output_section; | |
2051 | ||
2052 | PUT_WORD (abfd, g->address, natptr->r_address); | |
2053 | ||
2054 | r_type = (unsigned int) g->howto->type; | |
2055 | ||
2056 | r_addend = g->addend; | |
2057 | if ((sym->flags & BSF_SECTION_SYM) != 0) | |
2058 | r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma; | |
2059 | ||
2060 | /* If this relocation is relative to a symbol then set the | |
2061 | r_index to the symbols index, and the r_extern bit. | |
2062 | ||
2063 | Absolute symbols can come in in two ways, either as an offset | |
2064 | from the abs section, or as a symbol which has an abs value. | |
2065 | check for that here. */ | |
252b5132 RH |
2066 | if (bfd_is_abs_section (bfd_get_section (sym))) |
2067 | { | |
2068 | r_extern = 0; | |
2069 | r_index = N_ABS; | |
2070 | } | |
2071 | else if ((sym->flags & BSF_SECTION_SYM) == 0) | |
2072 | { | |
2073 | if (bfd_is_und_section (bfd_get_section (sym)) | |
2074 | || (sym->flags & BSF_GLOBAL) != 0) | |
2075 | r_extern = 1; | |
2076 | else | |
2077 | r_extern = 0; | |
2078 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
2079 | } | |
2080 | else | |
2081 | { | |
f7c33884 | 2082 | /* Just an ordinary section. */ |
252b5132 RH |
2083 | r_extern = 0; |
2084 | r_index = output_section->target_index; | |
2085 | } | |
2086 | ||
f7c33884 | 2087 | /* Now the fun stuff. */ |
923f08ff AM |
2088 | if (bfd_header_big_endian (abfd)) |
2089 | { | |
2090 | natptr->r_index[0] = r_index >> 16; | |
2091 | natptr->r_index[1] = r_index >> 8; | |
2092 | natptr->r_index[2] = r_index; | |
2093 | natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
2094 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
2095 | } | |
2096 | else | |
2097 | { | |
2098 | natptr->r_index[2] = r_index >> 16; | |
2099 | natptr->r_index[1] = r_index >> 8; | |
2100 | natptr->r_index[0] = r_index; | |
2101 | natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
2102 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE)); | |
2103 | } | |
252b5132 RH |
2104 | |
2105 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
2106 | } | |
2107 | ||
2108 | /* BFD deals internally with all things based from the section they're | |
2109 | in. so, something in 10 bytes into a text section with a base of | |
2110 | 50 would have a symbol (.text+10) and know .text vma was 50. | |
2111 | ||
2112 | Aout keeps all it's symbols based from zero, so the symbol would | |
2113 | contain 60. This macro subs the base of each section from the value | |
923f08ff AM |
2114 | to give the true offset from the section. */ |
2115 | ||
2116 | #define MOVE_ADDRESS(ad) \ | |
2117 | if (r_extern) \ | |
2118 | { \ | |
2119 | /* Undefined symbol. */ \ | |
2120 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
252b5132 | 2121 | cache_ptr->addend = ad; \ |
252b5132 | 2122 | } \ |
923f08ff AM |
2123 | else \ |
2124 | { \ | |
2125 | /* Defined, section relative. Replace symbol with pointer to \ | |
2126 | symbol which points to section. */ \ | |
2127 | switch (r_index) \ | |
2128 | { \ | |
2129 | case N_TEXT: \ | |
2130 | case N_TEXT | N_EXT: \ | |
2131 | cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \ | |
2132 | cache_ptr->addend = ad - su->textsec->vma; \ | |
2133 | break; \ | |
2134 | case N_DATA: \ | |
2135 | case N_DATA | N_EXT: \ | |
2136 | cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \ | |
2137 | cache_ptr->addend = ad - su->datasec->vma; \ | |
2138 | break; \ | |
2139 | case N_BSS: \ | |
2140 | case N_BSS | N_EXT: \ | |
2141 | cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \ | |
2142 | cache_ptr->addend = ad - su->bsssec->vma; \ | |
2143 | break; \ | |
2144 | default: \ | |
2145 | case N_ABS: \ | |
2146 | case N_ABS | N_EXT: \ | |
2147 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ | |
2148 | cache_ptr->addend = ad; \ | |
2149 | break; \ | |
2150 | } \ | |
2151 | } | |
252b5132 RH |
2152 | |
2153 | void | |
116c20d2 NC |
2154 | NAME (aout, swap_ext_reloc_in) (bfd *abfd, |
2155 | struct reloc_ext_external *bytes, | |
2156 | arelent *cache_ptr, | |
2157 | asymbol **symbols, | |
2158 | bfd_size_type symcount) | |
252b5132 RH |
2159 | { |
2160 | unsigned int r_index; | |
2161 | int r_extern; | |
2162 | unsigned int r_type; | |
2163 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2164 | ||
2165 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
2166 | ||
f7c33884 | 2167 | /* Now the fun stuff. */ |
923f08ff AM |
2168 | if (bfd_header_big_endian (abfd)) |
2169 | { | |
d45913a0 DA |
2170 | r_index = (((unsigned int) bytes->r_index[0] << 16) |
2171 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2172 | | bytes->r_index[2]); |
2173 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
2174 | r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
2175 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
2176 | } | |
2177 | else | |
2178 | { | |
d45913a0 DA |
2179 | r_index = (((unsigned int) bytes->r_index[2] << 16) |
2180 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2181 | | bytes->r_index[0]); |
2182 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
2183 | r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
2184 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
2185 | } | |
252b5132 | 2186 | |
ad756e3f AM |
2187 | if (r_type < TABLE_SIZE (howto_table_ext)) |
2188 | cache_ptr->howto = howto_table_ext + r_type; | |
2189 | else | |
2190 | cache_ptr->howto = NULL; | |
252b5132 RH |
2191 | |
2192 | /* Base relative relocs are always against the symbol table, | |
2193 | regardless of the setting of r_extern. r_extern just reflects | |
2194 | whether the symbol the reloc is against is local or global. */ | |
d45913a0 DA |
2195 | if (r_type == (unsigned int) RELOC_BASE10 |
2196 | || r_type == (unsigned int) RELOC_BASE13 | |
2197 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
2198 | r_extern = 1; |
2199 | ||
2200 | if (r_extern && r_index > symcount) | |
2201 | { | |
2202 | /* We could arrange to return an error, but it might be useful | |
07d6d2b8 | 2203 | to see the file even if it is bad. */ |
252b5132 RH |
2204 | r_extern = 0; |
2205 | r_index = N_ABS; | |
2206 | } | |
2207 | ||
923f08ff | 2208 | MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend)); |
252b5132 RH |
2209 | } |
2210 | ||
2211 | void | |
116c20d2 NC |
2212 | NAME (aout, swap_std_reloc_in) (bfd *abfd, |
2213 | struct reloc_std_external *bytes, | |
2214 | arelent *cache_ptr, | |
2215 | asymbol **symbols, | |
2216 | bfd_size_type symcount) | |
252b5132 RH |
2217 | { |
2218 | unsigned int r_index; | |
2219 | int r_extern; | |
2220 | unsigned int r_length; | |
2221 | int r_pcrel; | |
2222 | int r_baserel, r_jmptable, r_relative; | |
2223 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2224 | unsigned int howto_idx; | |
2225 | ||
dc810e39 | 2226 | cache_ptr->address = H_GET_32 (abfd, bytes->r_address); |
252b5132 | 2227 | |
f7c33884 | 2228 | /* Now the fun stuff. */ |
923f08ff AM |
2229 | if (bfd_header_big_endian (abfd)) |
2230 | { | |
d45913a0 DA |
2231 | r_index = (((unsigned int) bytes->r_index[0] << 16) |
2232 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2233 | | bytes->r_index[2]); |
2234 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
2235 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
2236 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
2237 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
2238 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
2239 | r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
2240 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
2241 | } | |
2242 | else | |
2243 | { | |
d45913a0 DA |
2244 | r_index = (((unsigned int) bytes->r_index[2] << 16) |
2245 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2246 | | bytes->r_index[0]); |
2247 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
2248 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
2249 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
2250 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
2251 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
2252 | r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
2253 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
2254 | } | |
252b5132 | 2255 | |
923f08ff AM |
2256 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel |
2257 | + 16 * r_jmptable + 32 * r_relative); | |
ad756e3f AM |
2258 | if (howto_idx < TABLE_SIZE (howto_table_std)) |
2259 | { | |
2260 | cache_ptr->howto = howto_table_std + howto_idx; | |
2261 | if (cache_ptr->howto->type == (unsigned int) -1) | |
2262 | cache_ptr->howto = NULL; | |
2263 | } | |
2264 | else | |
2265 | cache_ptr->howto = NULL; | |
252b5132 RH |
2266 | |
2267 | /* Base relative relocs are always against the symbol table, | |
2268 | regardless of the setting of r_extern. r_extern just reflects | |
2269 | whether the symbol the reloc is against is local or global. */ | |
2270 | if (r_baserel) | |
2271 | r_extern = 1; | |
2272 | ||
116acb2c | 2273 | if (r_extern && r_index >= symcount) |
252b5132 RH |
2274 | { |
2275 | /* We could arrange to return an error, but it might be useful | |
116acb2c AM |
2276 | to see the file even if it is bad. FIXME: Of course this |
2277 | means that objdump -r *doesn't* see the actual reloc, and | |
2278 | objcopy silently writes a different reloc. */ | |
252b5132 RH |
2279 | r_extern = 0; |
2280 | r_index = N_ABS; | |
2281 | } | |
2282 | ||
923f08ff | 2283 | MOVE_ADDRESS (0); |
252b5132 RH |
2284 | } |
2285 | ||
2286 | /* Read and swap the relocs for a section. */ | |
2287 | ||
b34976b6 | 2288 | bfd_boolean |
116c20d2 | 2289 | NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols) |
252b5132 | 2290 | { |
dc810e39 | 2291 | bfd_size_type count; |
252b5132 | 2292 | bfd_size_type reloc_size; |
116c20d2 | 2293 | void * relocs; |
252b5132 RH |
2294 | arelent *reloc_cache; |
2295 | size_t each_size; | |
2296 | unsigned int counter = 0; | |
2297 | arelent *cache_ptr; | |
dc810e39 | 2298 | bfd_size_type amt; |
252b5132 RH |
2299 | |
2300 | if (asect->relocation) | |
b34976b6 | 2301 | return TRUE; |
252b5132 RH |
2302 | |
2303 | if (asect->flags & SEC_CONSTRUCTOR) | |
b34976b6 | 2304 | return TRUE; |
252b5132 RH |
2305 | |
2306 | if (asect == obj_datasec (abfd)) | |
923f08ff | 2307 | reloc_size = exec_hdr (abfd)->a_drsize; |
252b5132 | 2308 | else if (asect == obj_textsec (abfd)) |
923f08ff | 2309 | reloc_size = exec_hdr (abfd)->a_trsize; |
252b5132 RH |
2310 | else if (asect == obj_bsssec (abfd)) |
2311 | reloc_size = 0; | |
2312 | else | |
2313 | { | |
2314 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 2315 | return FALSE; |
252b5132 RH |
2316 | } |
2317 | ||
078c4bfc MS |
2318 | if (reloc_size == 0) |
2319 | return TRUE; /* Nothing to be done. */ | |
2320 | ||
252b5132 | 2321 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) |
b34976b6 | 2322 | return FALSE; |
252b5132 RH |
2323 | |
2324 | each_size = obj_reloc_entry_size (abfd); | |
2325 | ||
2326 | count = reloc_size / each_size; | |
078c4bfc MS |
2327 | if (count == 0) |
2328 | return TRUE; /* Nothing to be done. */ | |
252b5132 | 2329 | |
dc810e39 | 2330 | amt = count * sizeof (arelent); |
a50b1753 | 2331 | reloc_cache = (arelent *) bfd_zmalloc (amt); |
078c4bfc | 2332 | if (reloc_cache == NULL) |
b34976b6 | 2333 | return FALSE; |
252b5132 | 2334 | |
dc810e39 | 2335 | relocs = bfd_malloc (reloc_size); |
078c4bfc | 2336 | if (relocs == NULL) |
252b5132 RH |
2337 | { |
2338 | free (reloc_cache); | |
b34976b6 | 2339 | return FALSE; |
252b5132 RH |
2340 | } |
2341 | ||
dc810e39 | 2342 | if (bfd_bread (relocs, reloc_size, abfd) != reloc_size) |
252b5132 RH |
2343 | { |
2344 | free (relocs); | |
2345 | free (reloc_cache); | |
b34976b6 | 2346 | return FALSE; |
252b5132 RH |
2347 | } |
2348 | ||
2349 | cache_ptr = reloc_cache; | |
2350 | if (each_size == RELOC_EXT_SIZE) | |
2351 | { | |
dc810e39 | 2352 | struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; |
252b5132 RH |
2353 | |
2354 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
1642229e | 2355 | MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols, |
dc810e39 | 2356 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
2357 | } |
2358 | else | |
2359 | { | |
dc810e39 | 2360 | struct reloc_std_external *rptr = (struct reloc_std_external *) relocs; |
252b5132 RH |
2361 | |
2362 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
2363 | MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols, | |
dc810e39 | 2364 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
2365 | } |
2366 | ||
2367 | free (relocs); | |
2368 | ||
2369 | asect->relocation = reloc_cache; | |
2370 | asect->reloc_count = cache_ptr - reloc_cache; | |
2371 | ||
b34976b6 | 2372 | return TRUE; |
252b5132 RH |
2373 | } |
2374 | ||
2375 | /* Write out a relocation section into an object file. */ | |
2376 | ||
b34976b6 | 2377 | bfd_boolean |
116c20d2 | 2378 | NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section) |
252b5132 RH |
2379 | { |
2380 | arelent **generic; | |
2381 | unsigned char *native, *natptr; | |
2382 | size_t each_size; | |
2383 | ||
2384 | unsigned int count = section->reloc_count; | |
dc810e39 | 2385 | bfd_size_type natsize; |
252b5132 RH |
2386 | |
2387 | if (count == 0 || section->orelocation == NULL) | |
b34976b6 | 2388 | return TRUE; |
252b5132 RH |
2389 | |
2390 | each_size = obj_reloc_entry_size (abfd); | |
dc810e39 | 2391 | natsize = (bfd_size_type) each_size * count; |
a50b1753 | 2392 | native = (unsigned char *) bfd_zalloc (abfd, natsize); |
252b5132 | 2393 | if (!native) |
b34976b6 | 2394 | return FALSE; |
252b5132 RH |
2395 | |
2396 | generic = section->orelocation; | |
2397 | ||
2398 | if (each_size == RELOC_EXT_SIZE) | |
2399 | { | |
2400 | for (natptr = native; | |
2401 | count != 0; | |
2402 | --count, natptr += each_size, ++generic) | |
e2996cc3 | 2403 | { |
92744f05 NC |
2404 | /* PR 20921: If the howto field has not been initialised then skip |
2405 | this reloc. | |
2406 | PR 20929: Similarly for the symbol field. */ | |
2407 | if ((*generic)->howto == NULL | |
2408 | || (*generic)->sym_ptr_ptr == NULL) | |
e2996cc3 NC |
2409 | { |
2410 | bfd_set_error (bfd_error_invalid_operation); | |
92744f05 | 2411 | _bfd_error_handler (_("\ |
871b3ab2 | 2412 | %pB: attempt to write out unknown reloc type"), abfd); |
e2996cc3 NC |
2413 | return FALSE; |
2414 | } | |
2415 | MY_swap_ext_reloc_out (abfd, *generic, | |
2416 | (struct reloc_ext_external *) natptr); | |
2417 | } | |
252b5132 RH |
2418 | } |
2419 | else | |
2420 | { | |
2421 | for (natptr = native; | |
2422 | count != 0; | |
2423 | --count, natptr += each_size, ++generic) | |
e2996cc3 | 2424 | { |
92744f05 NC |
2425 | if ((*generic)->howto == NULL |
2426 | || (*generic)->sym_ptr_ptr == NULL) | |
e2996cc3 NC |
2427 | { |
2428 | bfd_set_error (bfd_error_invalid_operation); | |
92744f05 | 2429 | _bfd_error_handler (_("\ |
871b3ab2 | 2430 | %pB: attempt to write out unknown reloc type"), abfd); |
e2996cc3 NC |
2431 | return FALSE; |
2432 | } | |
2433 | MY_swap_std_reloc_out (abfd, *generic, | |
2434 | (struct reloc_std_external *) natptr); | |
2435 | } | |
252b5132 RH |
2436 | } |
2437 | ||
116c20d2 | 2438 | if (bfd_bwrite ((void *) native, natsize, abfd) != natsize) |
dc810e39 | 2439 | { |
923f08ff | 2440 | bfd_release (abfd, native); |
b34976b6 | 2441 | return FALSE; |
dc810e39 | 2442 | } |
252b5132 RH |
2443 | bfd_release (abfd, native); |
2444 | ||
b34976b6 | 2445 | return TRUE; |
252b5132 RH |
2446 | } |
2447 | ||
f7c33884 NC |
2448 | /* This is stupid. This function should be a boolean predicate. */ |
2449 | ||
252b5132 | 2450 | long |
116c20d2 NC |
2451 | NAME (aout, canonicalize_reloc) (bfd *abfd, |
2452 | sec_ptr section, | |
2453 | arelent **relptr, | |
2454 | asymbol **symbols) | |
252b5132 RH |
2455 | { |
2456 | arelent *tblptr = section->relocation; | |
2457 | unsigned int count; | |
2458 | ||
2459 | if (section == obj_bsssec (abfd)) | |
2460 | { | |
2461 | *relptr = NULL; | |
2462 | return 0; | |
2463 | } | |
2464 | ||
116c20d2 | 2465 | if (!(tblptr || NAME (aout, slurp_reloc_table) (abfd, section, symbols))) |
252b5132 RH |
2466 | return -1; |
2467 | ||
923f08ff AM |
2468 | if (section->flags & SEC_CONSTRUCTOR) |
2469 | { | |
2470 | arelent_chain *chain = section->constructor_chain; | |
2471 | for (count = 0; count < section->reloc_count; count ++) | |
2472 | { | |
2473 | *relptr ++ = &chain->relent; | |
2474 | chain = chain->next; | |
2475 | } | |
252b5132 | 2476 | } |
923f08ff AM |
2477 | else |
2478 | { | |
2479 | tblptr = section->relocation; | |
252b5132 | 2480 | |
923f08ff AM |
2481 | for (count = 0; count++ < section->reloc_count; ) |
2482 | { | |
2483 | *relptr++ = tblptr++; | |
2484 | } | |
2485 | } | |
252b5132 RH |
2486 | *relptr = 0; |
2487 | ||
2488 | return section->reloc_count; | |
2489 | } | |
2490 | ||
2491 | long | |
116c20d2 | 2492 | NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect) |
252b5132 | 2493 | { |
923f08ff AM |
2494 | if (bfd_get_format (abfd) != bfd_object) |
2495 | { | |
2496 | bfd_set_error (bfd_error_invalid_operation); | |
2497 | return -1; | |
2498 | } | |
f7c33884 | 2499 | |
923f08ff | 2500 | if (asect->flags & SEC_CONSTRUCTOR) |
116c20d2 | 2501 | return sizeof (arelent *) * (asect->reloc_count + 1); |
252b5132 RH |
2502 | |
2503 | if (asect == obj_datasec (abfd)) | |
116c20d2 NC |
2504 | return sizeof (arelent *) |
2505 | * ((exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd)) | |
2506 | + 1); | |
252b5132 RH |
2507 | |
2508 | if (asect == obj_textsec (abfd)) | |
116c20d2 NC |
2509 | return sizeof (arelent *) |
2510 | * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd)) | |
2511 | + 1); | |
252b5132 RH |
2512 | |
2513 | if (asect == obj_bsssec (abfd)) | |
2514 | return sizeof (arelent *); | |
2515 | ||
2516 | if (asect == obj_bsssec (abfd)) | |
2517 | return 0; | |
2518 | ||
2519 | bfd_set_error (bfd_error_invalid_operation); | |
2520 | return -1; | |
2521 | } | |
252b5132 RH |
2522 | \f |
2523 | long | |
116c20d2 | 2524 | NAME (aout, get_symtab_upper_bound) (bfd *abfd) |
252b5132 | 2525 | { |
116c20d2 | 2526 | if (!NAME (aout, slurp_symbol_table) (abfd)) |
252b5132 RH |
2527 | return -1; |
2528 | ||
2529 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
2530 | } | |
2531 | ||
1725a96e | 2532 | alent * |
116c20d2 NC |
2533 | NAME (aout, get_lineno) (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
2534 | asymbol *ignore_symbol ATTRIBUTE_UNUSED) | |
252b5132 | 2535 | { |
116c20d2 | 2536 | return NULL; |
252b5132 RH |
2537 | } |
2538 | ||
252b5132 | 2539 | void |
116c20d2 NC |
2540 | NAME (aout, get_symbol_info) (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
2541 | asymbol *symbol, | |
2542 | symbol_info *ret) | |
252b5132 RH |
2543 | { |
2544 | bfd_symbol_info (symbol, ret); | |
2545 | ||
2546 | if (ret->type == '?') | |
2547 | { | |
923f08ff | 2548 | int type_code = aout_symbol (symbol)->type & 0xff; |
252b5132 RH |
2549 | const char *stab_name = bfd_get_stab_name (type_code); |
2550 | static char buf[10]; | |
2551 | ||
2552 | if (stab_name == NULL) | |
2553 | { | |
e60b52c6 | 2554 | sprintf (buf, "(%d)", type_code); |
252b5132 RH |
2555 | stab_name = buf; |
2556 | } | |
2557 | ret->type = '-'; | |
2558 | ret->stab_type = type_code; | |
923f08ff AM |
2559 | ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff); |
2560 | ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff); | |
252b5132 RH |
2561 | ret->stab_name = stab_name; |
2562 | } | |
2563 | } | |
2564 | ||
252b5132 | 2565 | void |
116c20d2 NC |
2566 | NAME (aout, print_symbol) (bfd *abfd, |
2567 | void * afile, | |
2568 | asymbol *symbol, | |
2569 | bfd_print_symbol_type how) | |
252b5132 RH |
2570 | { |
2571 | FILE *file = (FILE *)afile; | |
2572 | ||
923f08ff | 2573 | switch (how) |
252b5132 | 2574 | { |
923f08ff AM |
2575 | case bfd_print_symbol_name: |
2576 | if (symbol->name) | |
2577 | fprintf (file,"%s", symbol->name); | |
2578 | break; | |
2579 | case bfd_print_symbol_more: | |
2580 | fprintf (file,"%4x %2x %2x", | |
2581 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2582 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2583 | (unsigned) (aout_symbol (symbol)->type)); | |
2584 | break; | |
2585 | case bfd_print_symbol_all: | |
2586 | { | |
2587 | const char *section_name = symbol->section->name; | |
252b5132 | 2588 | |
116c20d2 | 2589 | bfd_print_symbol_vandf (abfd, (void *)file, symbol); |
252b5132 | 2590 | |
923f08ff AM |
2591 | fprintf (file," %-5s %04x %02x %02x", |
2592 | section_name, | |
2593 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2594 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2595 | (unsigned) (aout_symbol (symbol)->type & 0xff)); | |
2596 | if (symbol->name) | |
2597 | fprintf (file," %s", symbol->name); | |
2598 | } | |
2599 | break; | |
252b5132 | 2600 | } |
252b5132 RH |
2601 | } |
2602 | ||
2603 | /* If we don't have to allocate more than 1MB to hold the generic | |
2604 | symbols, we use the generic minisymbol methord: it's faster, since | |
2605 | it only translates the symbols once, not multiple times. */ | |
2606 | #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) | |
2607 | ||
2608 | /* Read minisymbols. For minisymbols, we use the unmodified a.out | |
2609 | symbols. The minisymbol_to_symbol function translates these into | |
2610 | BFD asymbol structures. */ | |
2611 | ||
2612 | long | |
116c20d2 NC |
2613 | NAME (aout, read_minisymbols) (bfd *abfd, |
2614 | bfd_boolean dynamic, | |
2615 | void * *minisymsp, | |
2616 | unsigned int *sizep) | |
252b5132 RH |
2617 | { |
2618 | if (dynamic) | |
116c20d2 NC |
2619 | /* We could handle the dynamic symbols here as well, but it's |
2620 | easier to hand them off. */ | |
2621 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
252b5132 RH |
2622 | |
2623 | if (! aout_get_external_symbols (abfd)) | |
2624 | return -1; | |
2625 | ||
2626 | if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2627 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2628 | ||
116c20d2 | 2629 | *minisymsp = (void *) obj_aout_external_syms (abfd); |
252b5132 RH |
2630 | |
2631 | /* By passing the external symbols back from this routine, we are | |
2632 | giving up control over the memory block. Clear | |
2633 | obj_aout_external_syms, so that we do not try to free it | |
2634 | ourselves. */ | |
2635 | obj_aout_external_syms (abfd) = NULL; | |
2636 | ||
2637 | *sizep = EXTERNAL_NLIST_SIZE; | |
2638 | return obj_aout_external_sym_count (abfd); | |
2639 | } | |
2640 | ||
2641 | /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an | |
2642 | unmodified a.out symbol. The SYM argument is a structure returned | |
2643 | by bfd_make_empty_symbol, which we fill in here. */ | |
2644 | ||
2645 | asymbol * | |
116c20d2 NC |
2646 | NAME (aout, minisymbol_to_symbol) (bfd *abfd, |
2647 | bfd_boolean dynamic, | |
2648 | const void * minisym, | |
2649 | asymbol *sym) | |
252b5132 RH |
2650 | { |
2651 | if (dynamic | |
2652 | || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2653 | return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); | |
2654 | ||
2655 | memset (sym, 0, sizeof (aout_symbol_type)); | |
2656 | ||
2657 | /* We call translate_symbol_table to translate a single symbol. */ | |
116c20d2 | 2658 | if (! (NAME (aout, translate_symbol_table) |
252b5132 RH |
2659 | (abfd, |
2660 | (aout_symbol_type *) sym, | |
2661 | (struct external_nlist *) minisym, | |
2662 | (bfd_size_type) 1, | |
2663 | obj_aout_external_strings (abfd), | |
2664 | obj_aout_external_string_size (abfd), | |
b34976b6 | 2665 | FALSE))) |
252b5132 RH |
2666 | return NULL; |
2667 | ||
2668 | return sym; | |
2669 | } | |
2670 | ||
f7c33884 NC |
2671 | /* Provided a BFD, a section and an offset into the section, calculate |
2672 | and return the name of the source file and the line nearest to the | |
2673 | wanted location. */ | |
252b5132 | 2674 | |
b34976b6 | 2675 | bfd_boolean |
116c20d2 | 2676 | NAME (aout, find_nearest_line) (bfd *abfd, |
116c20d2 | 2677 | asymbol **symbols, |
fb167eb2 | 2678 | asection *section, |
116c20d2 NC |
2679 | bfd_vma offset, |
2680 | const char **filename_ptr, | |
2681 | const char **functionname_ptr, | |
fb167eb2 AM |
2682 | unsigned int *line_ptr, |
2683 | unsigned int *disriminator_ptr) | |
252b5132 | 2684 | { |
f7c33884 | 2685 | /* Run down the file looking for the filename, function and linenumber. */ |
252b5132 | 2686 | asymbol **p; |
dc810e39 AM |
2687 | const char *directory_name = NULL; |
2688 | const char *main_file_name = NULL; | |
2689 | const char *current_file_name = NULL; | |
116c20d2 | 2690 | const char *line_file_name = NULL; /* Value of current_file_name at line number. */ |
dc810e39 | 2691 | const char *line_directory_name = NULL; /* Value of directory_name at line number. */ |
252b5132 RH |
2692 | bfd_vma low_line_vma = 0; |
2693 | bfd_vma low_func_vma = 0; | |
2694 | asymbol *func = 0; | |
dc810e39 | 2695 | bfd_size_type filelen, funclen; |
252b5132 RH |
2696 | char *buf; |
2697 | ||
2698 | *filename_ptr = abfd->filename; | |
50455f1a | 2699 | *functionname_ptr = NULL; |
252b5132 | 2700 | *line_ptr = 0; |
fb167eb2 AM |
2701 | if (disriminator_ptr) |
2702 | *disriminator_ptr = 0; | |
f7c33884 | 2703 | |
116c20d2 | 2704 | if (symbols != NULL) |
923f08ff AM |
2705 | { |
2706 | for (p = symbols; *p; p++) | |
2707 | { | |
2708 | aout_symbol_type *q = (aout_symbol_type *) (*p); | |
2709 | next: | |
2710 | switch (q->type) | |
2711 | { | |
2712 | case N_TEXT: | |
2713 | /* If this looks like a file name symbol, and it comes after | |
2714 | the line number we have found so far, but before the | |
2715 | offset, then we have probably not found the right line | |
2716 | number. */ | |
2717 | if (q->symbol.value <= offset | |
2718 | && ((q->symbol.value > low_line_vma | |
2719 | && (line_file_name != NULL | |
2720 | || *line_ptr != 0)) | |
2721 | || (q->symbol.value > low_func_vma | |
2722 | && func != NULL))) | |
2723 | { | |
2724 | const char *symname; | |
252b5132 | 2725 | |
923f08ff | 2726 | symname = q->symbol.name; |
808346fc NC |
2727 | |
2728 | if (symname != NULL | |
2729 | && strlen (symname) > 2 | |
2730 | && strcmp (symname + strlen (symname) - 2, ".o") == 0) | |
923f08ff AM |
2731 | { |
2732 | if (q->symbol.value > low_line_vma) | |
2733 | { | |
2734 | *line_ptr = 0; | |
2735 | line_file_name = NULL; | |
2736 | } | |
2737 | if (q->symbol.value > low_func_vma) | |
2738 | func = NULL; | |
2739 | } | |
2740 | } | |
2741 | break; | |
252b5132 | 2742 | |
923f08ff AM |
2743 | case N_SO: |
2744 | /* If this symbol is less than the offset, but greater than | |
2745 | the line number we have found so far, then we have not | |
2746 | found the right line number. */ | |
2747 | if (q->symbol.value <= offset) | |
2748 | { | |
2749 | if (q->symbol.value > low_line_vma) | |
2750 | { | |
2751 | *line_ptr = 0; | |
2752 | line_file_name = NULL; | |
2753 | } | |
2754 | if (q->symbol.value > low_func_vma) | |
2755 | func = NULL; | |
2756 | } | |
252b5132 | 2757 | |
923f08ff AM |
2758 | main_file_name = current_file_name = q->symbol.name; |
2759 | /* Look ahead to next symbol to check if that too is an N_SO. */ | |
2760 | p++; | |
2761 | if (*p == NULL) | |
c3864421 | 2762 | goto done; |
923f08ff AM |
2763 | q = (aout_symbol_type *) (*p); |
2764 | if (q->type != (int)N_SO) | |
2765 | goto next; | |
2766 | ||
2767 | /* Found a second N_SO First is directory; second is filename. */ | |
2768 | directory_name = current_file_name; | |
2769 | main_file_name = current_file_name = q->symbol.name; | |
2770 | if (obj_textsec (abfd) != section) | |
2771 | goto done; | |
2772 | break; | |
2773 | case N_SOL: | |
2774 | current_file_name = q->symbol.name; | |
2775 | break; | |
252b5132 | 2776 | |
923f08ff | 2777 | case N_SLINE: |
252b5132 | 2778 | |
923f08ff AM |
2779 | case N_DSLINE: |
2780 | case N_BSLINE: | |
2781 | /* We'll keep this if it resolves nearer than the one we have | |
2782 | already. */ | |
2783 | if (q->symbol.value >= low_line_vma | |
2784 | && q->symbol.value <= offset) | |
2785 | { | |
2786 | *line_ptr = q->desc; | |
2787 | low_line_vma = q->symbol.value; | |
2788 | line_file_name = current_file_name; | |
2789 | line_directory_name = directory_name; | |
2790 | } | |
2791 | break; | |
2792 | case N_FUN: | |
2793 | { | |
f7c33884 | 2794 | /* We'll keep this if it is nearer than the one we have already. */ |
808346fc NC |
2795 | if (q->symbol.value >= low_func_vma |
2796 | && q->symbol.value <= offset) | |
f7c33884 NC |
2797 | { |
2798 | low_func_vma = q->symbol.value; | |
2799 | func = (asymbol *)q; | |
2800 | } | |
923f08ff AM |
2801 | else if (q->symbol.value > offset) |
2802 | goto done; | |
2803 | } | |
2804 | break; | |
2805 | } | |
252b5132 | 2806 | } |
252b5132 | 2807 | } |
252b5132 RH |
2808 | |
2809 | done: | |
2810 | if (*line_ptr != 0) | |
2811 | { | |
2812 | main_file_name = line_file_name; | |
2813 | directory_name = line_directory_name; | |
2814 | } | |
2815 | ||
2816 | if (main_file_name == NULL | |
5af11cab | 2817 | || IS_ABSOLUTE_PATH (main_file_name) |
252b5132 RH |
2818 | || directory_name == NULL) |
2819 | filelen = 0; | |
2820 | else | |
2821 | filelen = strlen (directory_name) + strlen (main_file_name); | |
f7c33884 | 2822 | |
252b5132 RH |
2823 | if (func == NULL) |
2824 | funclen = 0; | |
2825 | else | |
2826 | funclen = strlen (bfd_asymbol_name (func)); | |
2827 | ||
2828 | if (adata (abfd).line_buf != NULL) | |
2829 | free (adata (abfd).line_buf); | |
f7c33884 | 2830 | |
252b5132 RH |
2831 | if (filelen + funclen == 0) |
2832 | adata (abfd).line_buf = buf = NULL; | |
2833 | else | |
2834 | { | |
a50b1753 | 2835 | buf = (char *) bfd_malloc (filelen + funclen + 3); |
252b5132 RH |
2836 | adata (abfd).line_buf = buf; |
2837 | if (buf == NULL) | |
b34976b6 | 2838 | return FALSE; |
252b5132 RH |
2839 | } |
2840 | ||
2841 | if (main_file_name != NULL) | |
2842 | { | |
5af11cab | 2843 | if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL) |
252b5132 RH |
2844 | *filename_ptr = main_file_name; |
2845 | else | |
2846 | { | |
50455f1a NC |
2847 | if (buf == NULL) |
2848 | /* PR binutils/20891: In a corrupt input file both | |
2849 | main_file_name and directory_name can be empty... */ | |
2850 | * filename_ptr = NULL; | |
2851 | else | |
2852 | { | |
2853 | snprintf (buf, filelen + 1, "%s%s", directory_name, | |
2854 | main_file_name); | |
2855 | *filename_ptr = buf; | |
2856 | buf += filelen + 1; | |
2857 | } | |
252b5132 RH |
2858 | } |
2859 | } | |
2860 | ||
2861 | if (func) | |
2862 | { | |
2863 | const char *function = func->name; | |
dc810e39 | 2864 | char *colon; |
252b5132 | 2865 | |
e82ab856 NC |
2866 | if (buf == NULL) |
2867 | { | |
2868 | /* PR binutils/20892: In a corrupt input file func can be empty. */ | |
2869 | * functionname_ptr = NULL; | |
2870 | return TRUE; | |
2871 | } | |
252b5132 RH |
2872 | /* The caller expects a symbol name. We actually have a |
2873 | function name, without the leading underscore. Put the | |
2874 | underscore back in, so that the caller gets a symbol name. */ | |
2875 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
2876 | strcpy (buf, function); | |
2877 | else | |
2878 | { | |
2879 | buf[0] = bfd_get_symbol_leading_char (abfd); | |
2880 | strcpy (buf + 1, function); | |
2881 | } | |
f7c33884 | 2882 | /* Have to remove : stuff. */ |
dc810e39 AM |
2883 | colon = strchr (buf, ':'); |
2884 | if (colon != NULL) | |
2885 | *colon = '\0'; | |
252b5132 RH |
2886 | *functionname_ptr = buf; |
2887 | } | |
2888 | ||
b34976b6 | 2889 | return TRUE; |
252b5132 RH |
2890 | } |
2891 | ||
252b5132 | 2892 | int |
a6b96beb AM |
2893 | NAME (aout, sizeof_headers) (bfd *abfd, |
2894 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
252b5132 | 2895 | { |
923f08ff | 2896 | return adata (abfd).exec_bytes_size; |
252b5132 RH |
2897 | } |
2898 | ||
2899 | /* Free all information we have cached for this BFD. We can always | |
2900 | read it again later if we need it. */ | |
2901 | ||
b34976b6 | 2902 | bfd_boolean |
116c20d2 | 2903 | NAME (aout, bfd_free_cached_info) (bfd *abfd) |
252b5132 RH |
2904 | { |
2905 | asection *o; | |
2906 | ||
920581c5 L |
2907 | if (bfd_get_format (abfd) != bfd_object |
2908 | || abfd->tdata.aout_data == NULL) | |
b34976b6 | 2909 | return TRUE; |
252b5132 RH |
2910 | |
2911 | #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } | |
2912 | BFCI_FREE (obj_aout_symbols (abfd)); | |
2913 | #ifdef USE_MMAP | |
2914 | obj_aout_external_syms (abfd) = 0; | |
2915 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2916 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2917 | obj_aout_external_strings (abfd) = 0; | |
2918 | #else | |
2919 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2920 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
2921 | #endif | |
116c20d2 | 2922 | for (o = abfd->sections; o != NULL; o = o->next) |
252b5132 RH |
2923 | BFCI_FREE (o->relocation); |
2924 | #undef BFCI_FREE | |
2925 | ||
b34976b6 | 2926 | return TRUE; |
252b5132 RH |
2927 | } |
2928 | \f | |
2929 | /* a.out link code. */ | |
2930 | ||
252b5132 RH |
2931 | /* Routine to create an entry in an a.out link hash table. */ |
2932 | ||
2933 | struct bfd_hash_entry * | |
116c20d2 NC |
2934 | NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry, |
2935 | struct bfd_hash_table *table, | |
2936 | const char *string) | |
252b5132 RH |
2937 | { |
2938 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2939 | ||
2940 | /* Allocate the structure if it has not already been allocated by a | |
2941 | subclass. */ | |
116c20d2 | 2942 | if (ret == NULL) |
a50b1753 | 2943 | ret = (struct aout_link_hash_entry *) bfd_hash_allocate (table, |
07d6d2b8 | 2944 | sizeof (* ret)); |
116c20d2 NC |
2945 | if (ret == NULL) |
2946 | return NULL; | |
252b5132 RH |
2947 | |
2948 | /* Call the allocation method of the superclass. */ | |
2949 | ret = ((struct aout_link_hash_entry *) | |
2950 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2951 | table, string)); | |
2952 | if (ret) | |
2953 | { | |
2954 | /* Set local fields. */ | |
b34976b6 | 2955 | ret->written = FALSE; |
252b5132 RH |
2956 | ret->indx = -1; |
2957 | } | |
2958 | ||
2959 | return (struct bfd_hash_entry *) ret; | |
2960 | } | |
2961 | ||
2962 | /* Initialize an a.out link hash table. */ | |
2963 | ||
b34976b6 | 2964 | bfd_boolean |
116c20d2 NC |
2965 | NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table, |
2966 | bfd *abfd, | |
2967 | struct bfd_hash_entry *(*newfunc) | |
2968 | (struct bfd_hash_entry *, struct bfd_hash_table *, | |
66eb6687 AM |
2969 | const char *), |
2970 | unsigned int entsize) | |
252b5132 | 2971 | { |
66eb6687 | 2972 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize); |
252b5132 RH |
2973 | } |
2974 | ||
2975 | /* Create an a.out link hash table. */ | |
2976 | ||
2977 | struct bfd_link_hash_table * | |
116c20d2 | 2978 | NAME (aout, link_hash_table_create) (bfd *abfd) |
252b5132 RH |
2979 | { |
2980 | struct aout_link_hash_table *ret; | |
116c20d2 | 2981 | bfd_size_type amt = sizeof (* ret); |
252b5132 | 2982 | |
a50b1753 | 2983 | ret = (struct aout_link_hash_table *) bfd_malloc (amt); |
252b5132 | 2984 | if (ret == NULL) |
116c20d2 | 2985 | return NULL; |
5ed6aba4 | 2986 | |
66eb6687 AM |
2987 | if (!NAME (aout, link_hash_table_init) (ret, abfd, |
2988 | NAME (aout, link_hash_newfunc), | |
2989 | sizeof (struct aout_link_hash_entry))) | |
252b5132 RH |
2990 | { |
2991 | free (ret); | |
116c20d2 | 2992 | return NULL; |
252b5132 RH |
2993 | } |
2994 | return &ret->root; | |
2995 | } | |
2996 | ||
116c20d2 | 2997 | /* Add all symbols from an object file to the hash table. */ |
252b5132 | 2998 | |
b34976b6 | 2999 | static bfd_boolean |
116c20d2 | 3000 | aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info) |
252b5132 | 3001 | { |
116c20d2 NC |
3002 | bfd_boolean (*add_one_symbol) |
3003 | (struct bfd_link_info *, bfd *, const char *, flagword, asection *, | |
3004 | bfd_vma, const char *, bfd_boolean, bfd_boolean, | |
3005 | struct bfd_link_hash_entry **); | |
3006 | struct external_nlist *syms; | |
3007 | bfd_size_type sym_count; | |
3008 | char *strings; | |
3009 | bfd_boolean copy; | |
3010 | struct aout_link_hash_entry **sym_hash; | |
3011 | struct external_nlist *p; | |
3012 | struct external_nlist *pend; | |
3013 | bfd_size_type amt; | |
252b5132 | 3014 | |
116c20d2 NC |
3015 | syms = obj_aout_external_syms (abfd); |
3016 | sym_count = obj_aout_external_sym_count (abfd); | |
3017 | strings = obj_aout_external_strings (abfd); | |
3018 | if (info->keep_memory) | |
3019 | copy = FALSE; | |
3020 | else | |
3021 | copy = TRUE; | |
252b5132 | 3022 | |
116c20d2 | 3023 | if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) |
252b5132 | 3024 | { |
116c20d2 NC |
3025 | if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) |
3026 | (abfd, info, &syms, &sym_count, &strings))) | |
b34976b6 | 3027 | return FALSE; |
252b5132 RH |
3028 | } |
3029 | ||
20c6e70e MS |
3030 | if (sym_count == 0) |
3031 | return TRUE; /* Nothing to do. */ | |
3032 | ||
116c20d2 NC |
3033 | /* We keep a list of the linker hash table entries that correspond |
3034 | to particular symbols. We could just look them up in the hash | |
3035 | table, but keeping the list is more efficient. Perhaps this | |
3036 | should be conditional on info->keep_memory. */ | |
3037 | amt = sym_count * sizeof (struct aout_link_hash_entry *); | |
a50b1753 | 3038 | sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt); |
20c6e70e | 3039 | if (sym_hash == NULL) |
116c20d2 NC |
3040 | return FALSE; |
3041 | obj_aout_sym_hashes (abfd) = sym_hash; | |
252b5132 | 3042 | |
116c20d2 NC |
3043 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; |
3044 | if (add_one_symbol == NULL) | |
3045 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
252b5132 | 3046 | |
116c20d2 NC |
3047 | p = syms; |
3048 | pend = p + sym_count; | |
3049 | for (; p < pend; p++, sym_hash++) | |
252b5132 | 3050 | { |
116c20d2 | 3051 | int type; |
252b5132 | 3052 | const char *name; |
116c20d2 NC |
3053 | bfd_vma value; |
3054 | asection *section; | |
3055 | flagword flags; | |
3056 | const char *string; | |
252b5132 | 3057 | |
116c20d2 | 3058 | *sym_hash = NULL; |
252b5132 | 3059 | |
116c20d2 | 3060 | type = H_GET_8 (abfd, p->e_type); |
252b5132 | 3061 | |
116c20d2 NC |
3062 | /* Ignore debugging symbols. */ |
3063 | if ((type & N_STAB) != 0) | |
3064 | continue; | |
252b5132 | 3065 | |
e517df3d | 3066 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
531336e3 | 3067 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3068 | return FALSE; |
116c20d2 NC |
3069 | name = strings + GET_WORD (abfd, p->e_strx); |
3070 | value = GET_WORD (abfd, p->e_value); | |
3071 | flags = BSF_GLOBAL; | |
3072 | string = NULL; | |
3073 | switch (type) | |
252b5132 | 3074 | { |
116c20d2 NC |
3075 | default: |
3076 | abort (); | |
f7c33884 | 3077 | |
116c20d2 NC |
3078 | case N_UNDF: |
3079 | case N_ABS: | |
3080 | case N_TEXT: | |
3081 | case N_DATA: | |
3082 | case N_BSS: | |
3083 | case N_FN_SEQ: | |
3084 | case N_COMM: | |
3085 | case N_SETV: | |
3086 | case N_FN: | |
3087 | /* Ignore symbols that are not externally visible. */ | |
3088 | continue; | |
3089 | case N_INDR: | |
3090 | /* Ignore local indirect symbol. */ | |
3091 | ++p; | |
3092 | ++sym_hash; | |
3093 | continue; | |
252b5132 | 3094 | |
116c20d2 NC |
3095 | case N_UNDF | N_EXT: |
3096 | if (value == 0) | |
f7c33884 | 3097 | { |
116c20d2 NC |
3098 | section = bfd_und_section_ptr; |
3099 | flags = 0; | |
252b5132 RH |
3100 | } |
3101 | else | |
3102 | section = bfd_com_section_ptr; | |
3103 | break; | |
3104 | case N_ABS | N_EXT: | |
3105 | section = bfd_abs_section_ptr; | |
3106 | break; | |
3107 | case N_TEXT | N_EXT: | |
3108 | section = obj_textsec (abfd); | |
3109 | value -= bfd_get_section_vma (abfd, section); | |
3110 | break; | |
3111 | case N_DATA | N_EXT: | |
3112 | case N_SETV | N_EXT: | |
3113 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
3114 | translate_from_native_sym_flags. */ | |
3115 | section = obj_datasec (abfd); | |
3116 | value -= bfd_get_section_vma (abfd, section); | |
3117 | break; | |
3118 | case N_BSS | N_EXT: | |
3119 | section = obj_bsssec (abfd); | |
3120 | value -= bfd_get_section_vma (abfd, section); | |
3121 | break; | |
3122 | case N_INDR | N_EXT: | |
3123 | /* An indirect symbol. The next symbol is the symbol | |
3124 | which this one really is. */ | |
39d4daf6 NC |
3125 | /* See PR 20925 for a reproducer. */ |
3126 | if (p + 1 >= pend) | |
3127 | return FALSE; | |
252b5132 | 3128 | ++p; |
e517df3d | 3129 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
daae68f4 | 3130 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3131 | return FALSE; |
252b5132 RH |
3132 | string = strings + GET_WORD (abfd, p->e_strx); |
3133 | section = bfd_ind_section_ptr; | |
3134 | flags |= BSF_INDIRECT; | |
3135 | break; | |
3136 | case N_COMM | N_EXT: | |
3137 | section = bfd_com_section_ptr; | |
3138 | break; | |
3139 | case N_SETA: case N_SETA | N_EXT: | |
3140 | section = bfd_abs_section_ptr; | |
3141 | flags |= BSF_CONSTRUCTOR; | |
3142 | break; | |
3143 | case N_SETT: case N_SETT | N_EXT: | |
3144 | section = obj_textsec (abfd); | |
3145 | flags |= BSF_CONSTRUCTOR; | |
3146 | value -= bfd_get_section_vma (abfd, section); | |
3147 | break; | |
3148 | case N_SETD: case N_SETD | N_EXT: | |
3149 | section = obj_datasec (abfd); | |
3150 | flags |= BSF_CONSTRUCTOR; | |
3151 | value -= bfd_get_section_vma (abfd, section); | |
3152 | break; | |
3153 | case N_SETB: case N_SETB | N_EXT: | |
3154 | section = obj_bsssec (abfd); | |
3155 | flags |= BSF_CONSTRUCTOR; | |
3156 | value -= bfd_get_section_vma (abfd, section); | |
3157 | break; | |
3158 | case N_WARNING: | |
3159 | /* A warning symbol. The next symbol is the one to warn | |
9f400ee9 HPN |
3160 | about. If there is no next symbol, just look away. */ |
3161 | if (p + 1 >= pend) | |
3162 | return TRUE; | |
252b5132 RH |
3163 | ++p; |
3164 | string = name; | |
e517df3d | 3165 | /* PR 19629: Corrupt binaries can contain illegal string offsets. */ |
daae68f4 | 3166 | if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd)) |
e517df3d | 3167 | return FALSE; |
252b5132 RH |
3168 | name = strings + GET_WORD (abfd, p->e_strx); |
3169 | section = bfd_und_section_ptr; | |
3170 | flags |= BSF_WARNING; | |
3171 | break; | |
3172 | case N_WEAKU: | |
3173 | section = bfd_und_section_ptr; | |
3174 | flags = BSF_WEAK; | |
3175 | break; | |
3176 | case N_WEAKA: | |
3177 | section = bfd_abs_section_ptr; | |
3178 | flags = BSF_WEAK; | |
3179 | break; | |
3180 | case N_WEAKT: | |
3181 | section = obj_textsec (abfd); | |
3182 | value -= bfd_get_section_vma (abfd, section); | |
3183 | flags = BSF_WEAK; | |
3184 | break; | |
3185 | case N_WEAKD: | |
3186 | section = obj_datasec (abfd); | |
3187 | value -= bfd_get_section_vma (abfd, section); | |
3188 | flags = BSF_WEAK; | |
3189 | break; | |
3190 | case N_WEAKB: | |
3191 | section = obj_bsssec (abfd); | |
3192 | value -= bfd_get_section_vma (abfd, section); | |
3193 | flags = BSF_WEAK; | |
3194 | break; | |
3195 | } | |
3196 | ||
3197 | if (! ((*add_one_symbol) | |
b34976b6 | 3198 | (info, abfd, name, flags, section, value, string, copy, FALSE, |
252b5132 | 3199 | (struct bfd_link_hash_entry **) sym_hash))) |
b34976b6 | 3200 | return FALSE; |
252b5132 RH |
3201 | |
3202 | /* Restrict the maximum alignment of a common symbol based on | |
3203 | the architecture, since a.out has no way to represent | |
3204 | alignment requirements of a section in a .o file. FIXME: | |
3205 | This isn't quite right: it should use the architecture of the | |
3206 | output file, not the input files. */ | |
3207 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
3208 | && ((*sym_hash)->root.u.c.p->alignment_power > | |
3209 | bfd_get_arch_info (abfd)->section_align_power)) | |
3210 | (*sym_hash)->root.u.c.p->alignment_power = | |
3211 | bfd_get_arch_info (abfd)->section_align_power; | |
3212 | ||
3213 | /* If this is a set symbol, and we are not building sets, then | |
3214 | it is possible for the hash entry to not have been set. In | |
3215 | such a case, treat the symbol as not globally defined. */ | |
3216 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
3217 | { | |
3218 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
3219 | *sym_hash = NULL; | |
3220 | } | |
3221 | ||
3222 | if (type == (N_INDR | N_EXT) || type == N_WARNING) | |
3223 | ++sym_hash; | |
3224 | } | |
3225 | ||
b34976b6 | 3226 | return TRUE; |
252b5132 | 3227 | } |
252b5132 | 3228 | |
116c20d2 NC |
3229 | /* Free up the internal symbols read from an a.out file. */ |
3230 | ||
3231 | static bfd_boolean | |
3232 | aout_link_free_symbols (bfd *abfd) | |
252b5132 | 3233 | { |
116c20d2 NC |
3234 | if (obj_aout_external_syms (abfd) != NULL) |
3235 | { | |
3236 | #ifdef USE_MMAP | |
3237 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
3238 | #else | |
3239 | free ((void *) obj_aout_external_syms (abfd)); | |
3240 | #endif | |
3241 | obj_aout_external_syms (abfd) = NULL; | |
3242 | } | |
3243 | if (obj_aout_external_strings (abfd) != NULL) | |
3244 | { | |
3245 | #ifdef USE_MMAP | |
3246 | bfd_free_window (&obj_aout_string_window (abfd)); | |
3247 | #else | |
3248 | free ((void *) obj_aout_external_strings (abfd)); | |
3249 | #endif | |
3250 | obj_aout_external_strings (abfd) = NULL; | |
3251 | } | |
3252 | return TRUE; | |
3253 | } | |
252b5132 | 3254 | |
116c20d2 | 3255 | /* Add symbols from an a.out object file. */ |
252b5132 | 3256 | |
116c20d2 NC |
3257 | static bfd_boolean |
3258 | aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) | |
252b5132 | 3259 | { |
116c20d2 NC |
3260 | if (! aout_get_external_symbols (abfd)) |
3261 | return FALSE; | |
3262 | if (! aout_link_add_symbols (abfd, info)) | |
3263 | return FALSE; | |
3264 | if (! info->keep_memory) | |
3265 | { | |
3266 | if (! aout_link_free_symbols (abfd)) | |
3267 | return FALSE; | |
3268 | } | |
3269 | return TRUE; | |
3270 | } | |
252b5132 | 3271 | |
116c20d2 NC |
3272 | /* Look through the internal symbols to see if this object file should |
3273 | be included in the link. We should include this object file if it | |
3274 | defines any symbols which are currently undefined. If this object | |
3275 | file defines a common symbol, then we may adjust the size of the | |
3276 | known symbol but we do not include the object file in the link | |
3277 | (unless there is some other reason to include it). */ | |
252b5132 | 3278 | |
116c20d2 NC |
3279 | static bfd_boolean |
3280 | aout_link_check_ar_symbols (bfd *abfd, | |
3281 | struct bfd_link_info *info, | |
5d3236ee DK |
3282 | bfd_boolean *pneeded, |
3283 | bfd **subsbfd) | |
252b5132 | 3284 | { |
116c20d2 NC |
3285 | struct external_nlist *p; |
3286 | struct external_nlist *pend; | |
3287 | char *strings; | |
252b5132 | 3288 | |
116c20d2 | 3289 | *pneeded = FALSE; |
252b5132 | 3290 | |
116c20d2 NC |
3291 | /* Look through all the symbols. */ |
3292 | p = obj_aout_external_syms (abfd); | |
3293 | pend = p + obj_aout_external_sym_count (abfd); | |
3294 | strings = obj_aout_external_strings (abfd); | |
3295 | for (; p < pend; p++) | |
3296 | { | |
3297 | int type = H_GET_8 (abfd, p->e_type); | |
3298 | const char *name; | |
3299 | struct bfd_link_hash_entry *h; | |
252b5132 | 3300 | |
116c20d2 NC |
3301 | /* Ignore symbols that are not externally visible. This is an |
3302 | optimization only, as we check the type more thoroughly | |
3303 | below. */ | |
3304 | if (((type & N_EXT) == 0 | |
3305 | || (type & N_STAB) != 0 | |
3306 | || type == N_FN) | |
3307 | && type != N_WEAKA | |
3308 | && type != N_WEAKT | |
3309 | && type != N_WEAKD | |
3310 | && type != N_WEAKB) | |
3311 | { | |
3312 | if (type == N_WARNING | |
3313 | || type == N_INDR) | |
3314 | ++p; | |
3315 | continue; | |
3316 | } | |
3317 | ||
3318 | name = strings + GET_WORD (abfd, p->e_strx); | |
3319 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); | |
3320 | ||
3321 | /* We are only interested in symbols that are currently | |
3322 | undefined or common. */ | |
3323 | if (h == NULL | |
3324 | || (h->type != bfd_link_hash_undefined | |
3325 | && h->type != bfd_link_hash_common)) | |
3326 | { | |
3327 | if (type == (N_INDR | N_EXT)) | |
3328 | ++p; | |
3329 | continue; | |
3330 | } | |
3331 | ||
3332 | if (type == (N_TEXT | N_EXT) | |
3333 | || type == (N_DATA | N_EXT) | |
3334 | || type == (N_BSS | N_EXT) | |
3335 | || type == (N_ABS | N_EXT) | |
3336 | || type == (N_INDR | N_EXT)) | |
3337 | { | |
3338 | /* This object file defines this symbol. We must link it | |
3339 | in. This is true regardless of whether the current | |
3340 | definition of the symbol is undefined or common. | |
3341 | ||
07d6d2b8 | 3342 | If the current definition is common, we have a case in |
116c20d2 | 3343 | which we have already seen an object file including: |
07d6d2b8 | 3344 | int a; |
116c20d2 | 3345 | and this object file from the archive includes: |
07d6d2b8 | 3346 | int a = 5; |
116c20d2 | 3347 | In such a case, whether to include this object is target |
07d6d2b8 | 3348 | dependant for backward compatibility. |
116c20d2 NC |
3349 | |
3350 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
3351 | element if the symbol is defined in the .data section, | |
3352 | but not if it is defined in the .text section. That | |
3353 | seems a bit crazy to me, and it has not been implemented | |
3354 | yet. However, it might be correct. */ | |
3355 | if (h->type == bfd_link_hash_common) | |
3356 | { | |
3357 | int skip = 0; | |
3358 | ||
f88dc410 | 3359 | switch (info->common_skip_ar_symbols) |
116c20d2 | 3360 | { |
a78eea16 AM |
3361 | case bfd_link_common_skip_none: |
3362 | break; | |
116c20d2 NC |
3363 | case bfd_link_common_skip_text: |
3364 | skip = (type == (N_TEXT | N_EXT)); | |
3365 | break; | |
3366 | case bfd_link_common_skip_data: | |
3367 | skip = (type == (N_DATA | N_EXT)); | |
3368 | break; | |
116c20d2 NC |
3369 | case bfd_link_common_skip_all: |
3370 | skip = 1; | |
3371 | break; | |
3372 | } | |
3373 | ||
3374 | if (skip) | |
3375 | continue; | |
3376 | } | |
3377 | ||
0e144ba7 AM |
3378 | if (!(*info->callbacks |
3379 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3380 | return FALSE; |
3381 | *pneeded = TRUE; | |
3382 | return TRUE; | |
3383 | } | |
3384 | ||
3385 | if (type == (N_UNDF | N_EXT)) | |
3386 | { | |
3387 | bfd_vma value; | |
3388 | ||
3389 | value = GET_WORD (abfd, p->e_value); | |
3390 | if (value != 0) | |
3391 | { | |
3392 | /* This symbol is common in the object from the archive | |
3393 | file. */ | |
3394 | if (h->type == bfd_link_hash_undefined) | |
3395 | { | |
3396 | bfd *symbfd; | |
3397 | unsigned int power; | |
3398 | ||
3399 | symbfd = h->u.undef.abfd; | |
3400 | if (symbfd == NULL) | |
3401 | { | |
3402 | /* This symbol was created as undefined from | |
3403 | outside BFD. We assume that we should link | |
3404 | in the object file. This is done for the -u | |
3405 | option in the linker. */ | |
0e144ba7 AM |
3406 | if (!(*info->callbacks |
3407 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3408 | return FALSE; |
3409 | *pneeded = TRUE; | |
3410 | return TRUE; | |
3411 | } | |
3412 | /* Turn the current link symbol into a common | |
3413 | symbol. It is already on the undefs list. */ | |
3414 | h->type = bfd_link_hash_common; | |
a50b1753 | 3415 | h->u.c.p = (struct bfd_link_hash_common_entry *) |
0e144ba7 AM |
3416 | bfd_hash_allocate (&info->hash->table, |
3417 | sizeof (struct bfd_link_hash_common_entry)); | |
116c20d2 NC |
3418 | if (h->u.c.p == NULL) |
3419 | return FALSE; | |
3420 | ||
3421 | h->u.c.size = value; | |
3422 | ||
3423 | /* FIXME: This isn't quite right. The maximum | |
3424 | alignment of a common symbol should be set by the | |
3425 | architecture of the output file, not of the input | |
3426 | file. */ | |
3427 | power = bfd_log2 (value); | |
3428 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
3429 | power = bfd_get_arch_info (abfd)->section_align_power; | |
3430 | h->u.c.p->alignment_power = power; | |
3431 | ||
3432 | h->u.c.p->section = bfd_make_section_old_way (symbfd, | |
3433 | "COMMON"); | |
3434 | } | |
3435 | else | |
3436 | { | |
3437 | /* Adjust the size of the common symbol if | |
3438 | necessary. */ | |
3439 | if (value > h->u.c.size) | |
3440 | h->u.c.size = value; | |
3441 | } | |
3442 | } | |
3443 | } | |
3444 | ||
3445 | if (type == N_WEAKA | |
3446 | || type == N_WEAKT | |
3447 | || type == N_WEAKD | |
3448 | || type == N_WEAKB) | |
3449 | { | |
3450 | /* This symbol is weak but defined. We must pull it in if | |
3451 | the current link symbol is undefined, but we don't want | |
3452 | it if the current link symbol is common. */ | |
3453 | if (h->type == bfd_link_hash_undefined) | |
3454 | { | |
0e144ba7 AM |
3455 | if (!(*info->callbacks |
3456 | ->add_archive_element) (info, abfd, name, subsbfd)) | |
116c20d2 NC |
3457 | return FALSE; |
3458 | *pneeded = TRUE; | |
3459 | return TRUE; | |
3460 | } | |
3461 | } | |
3462 | } | |
3463 | ||
3464 | /* We do not need this object file. */ | |
3465 | return TRUE; | |
3466 | } | |
3467 | /* Check a single archive element to see if we need to include it in | |
3468 | the link. *PNEEDED is set according to whether this element is | |
3469 | needed in the link or not. This is called from | |
3470 | _bfd_generic_link_add_archive_symbols. */ | |
3471 | ||
3472 | static bfd_boolean | |
3473 | aout_link_check_archive_element (bfd *abfd, | |
3474 | struct bfd_link_info *info, | |
13e570f8 AM |
3475 | struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED, |
3476 | const char *name ATTRIBUTE_UNUSED, | |
116c20d2 NC |
3477 | bfd_boolean *pneeded) |
3478 | { | |
0e144ba7 AM |
3479 | bfd *oldbfd; |
3480 | bfd_boolean needed; | |
5d3236ee | 3481 | |
0e144ba7 | 3482 | if (!aout_get_external_symbols (abfd)) |
116c20d2 NC |
3483 | return FALSE; |
3484 | ||
0e144ba7 AM |
3485 | oldbfd = abfd; |
3486 | if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd)) | |
116c20d2 NC |
3487 | return FALSE; |
3488 | ||
0e144ba7 AM |
3489 | needed = *pneeded; |
3490 | if (needed) | |
116c20d2 | 3491 | { |
5d3236ee DK |
3492 | /* Potentially, the add_archive_element hook may have set a |
3493 | substitute BFD for us. */ | |
0e144ba7 AM |
3494 | if (abfd != oldbfd) |
3495 | { | |
3496 | if (!info->keep_memory | |
3497 | && !aout_link_free_symbols (oldbfd)) | |
3498 | return FALSE; | |
3499 | if (!aout_get_external_symbols (abfd)) | |
3500 | return FALSE; | |
3501 | } | |
3502 | if (!aout_link_add_symbols (abfd, info)) | |
116c20d2 NC |
3503 | return FALSE; |
3504 | } | |
3505 | ||
0e144ba7 | 3506 | if (!info->keep_memory || !needed) |
116c20d2 | 3507 | { |
0e144ba7 | 3508 | if (!aout_link_free_symbols (abfd)) |
116c20d2 NC |
3509 | return FALSE; |
3510 | } | |
3511 | ||
3512 | return TRUE; | |
3513 | } | |
3514 | ||
3515 | /* Given an a.out BFD, add symbols to the global hash table as | |
3516 | appropriate. */ | |
3517 | ||
3518 | bfd_boolean | |
3519 | NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info) | |
3520 | { | |
3521 | switch (bfd_get_format (abfd)) | |
3522 | { | |
3523 | case bfd_object: | |
3524 | return aout_link_add_object_symbols (abfd, info); | |
3525 | case bfd_archive: | |
3526 | return _bfd_generic_link_add_archive_symbols | |
3527 | (abfd, info, aout_link_check_archive_element); | |
3528 | default: | |
3529 | bfd_set_error (bfd_error_wrong_format); | |
3530 | return FALSE; | |
3531 | } | |
3532 | } | |
3533 | \f | |
3534 | /* A hash table used for header files with N_BINCL entries. */ | |
3535 | ||
3536 | struct aout_link_includes_table | |
3537 | { | |
3538 | struct bfd_hash_table root; | |
3539 | }; | |
3540 | ||
3541 | /* A linked list of totals that we have found for a particular header | |
3542 | file. */ | |
3543 | ||
3544 | struct aout_link_includes_totals | |
3545 | { | |
3546 | struct aout_link_includes_totals *next; | |
3547 | bfd_vma total; | |
3548 | }; | |
3549 | ||
3550 | /* An entry in the header file hash table. */ | |
3551 | ||
3552 | struct aout_link_includes_entry | |
3553 | { | |
3554 | struct bfd_hash_entry root; | |
3555 | /* List of totals we have found for this file. */ | |
3556 | struct aout_link_includes_totals *totals; | |
3557 | }; | |
3558 | ||
3559 | /* Look up an entry in an the header file hash table. */ | |
3560 | ||
3561 | #define aout_link_includes_lookup(table, string, create, copy) \ | |
3562 | ((struct aout_link_includes_entry *) \ | |
3563 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
3564 | ||
3565 | /* During the final link step we need to pass around a bunch of | |
3566 | information, so we do it in an instance of this structure. */ | |
3567 | ||
3568 | struct aout_final_link_info | |
3569 | { | |
3570 | /* General link information. */ | |
3571 | struct bfd_link_info *info; | |
3572 | /* Output bfd. */ | |
252b5132 RH |
3573 | bfd *output_bfd; |
3574 | /* Reloc file positions. */ | |
3575 | file_ptr treloff, dreloff; | |
3576 | /* File position of symbols. */ | |
3577 | file_ptr symoff; | |
3578 | /* String table. */ | |
3579 | struct bfd_strtab_hash *strtab; | |
3580 | /* Header file hash table. */ | |
3581 | struct aout_link_includes_table includes; | |
3582 | /* A buffer large enough to hold the contents of any section. */ | |
3583 | bfd_byte *contents; | |
3584 | /* A buffer large enough to hold the relocs of any section. */ | |
116c20d2 | 3585 | void * relocs; |
252b5132 RH |
3586 | /* A buffer large enough to hold the symbol map of any input BFD. */ |
3587 | int *symbol_map; | |
3588 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
3589 | struct external_nlist *output_syms; | |
3590 | }; | |
3591 | ||
252b5132 RH |
3592 | /* The function to create a new entry in the header file hash table. */ |
3593 | ||
3594 | static struct bfd_hash_entry * | |
116c20d2 NC |
3595 | aout_link_includes_newfunc (struct bfd_hash_entry *entry, |
3596 | struct bfd_hash_table *table, | |
3597 | const char *string) | |
252b5132 RH |
3598 | { |
3599 | struct aout_link_includes_entry *ret = | |
3600 | (struct aout_link_includes_entry *) entry; | |
3601 | ||
3602 | /* Allocate the structure if it has not already been allocated by a | |
3603 | subclass. */ | |
116c20d2 | 3604 | if (ret == NULL) |
a50b1753 | 3605 | ret = (struct aout_link_includes_entry *) |
07d6d2b8 | 3606 | bfd_hash_allocate (table, sizeof (* ret)); |
116c20d2 NC |
3607 | if (ret == NULL) |
3608 | return NULL; | |
252b5132 RH |
3609 | |
3610 | /* Call the allocation method of the superclass. */ | |
3611 | ret = ((struct aout_link_includes_entry *) | |
3612 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
3613 | if (ret) | |
3614 | { | |
3615 | /* Set local fields. */ | |
3616 | ret->totals = NULL; | |
3617 | } | |
3618 | ||
3619 | return (struct bfd_hash_entry *) ret; | |
3620 | } | |
3621 | ||
116c20d2 NC |
3622 | /* Write out a symbol that was not associated with an a.out input |
3623 | object. */ | |
252b5132 | 3624 | |
116c20d2 | 3625 | static bfd_boolean |
7686d77d | 3626 | aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data) |
252b5132 | 3627 | { |
7686d77d | 3628 | struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh; |
57402f1e | 3629 | struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data; |
116c20d2 NC |
3630 | bfd *output_bfd; |
3631 | int type; | |
3632 | bfd_vma val; | |
3633 | struct external_nlist outsym; | |
3634 | bfd_size_type indx; | |
3635 | bfd_size_type amt; | |
252b5132 | 3636 | |
116c20d2 NC |
3637 | if (h->root.type == bfd_link_hash_warning) |
3638 | { | |
3639 | h = (struct aout_link_hash_entry *) h->root.u.i.link; | |
3640 | if (h->root.type == bfd_link_hash_new) | |
3641 | return TRUE; | |
3642 | } | |
252b5132 | 3643 | |
57402f1e | 3644 | output_bfd = flaginfo->output_bfd; |
252b5132 | 3645 | |
116c20d2 | 3646 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) |
252b5132 | 3647 | { |
116c20d2 | 3648 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) |
57402f1e | 3649 | (output_bfd, flaginfo->info, h))) |
252b5132 | 3650 | { |
116c20d2 NC |
3651 | /* FIXME: No way to handle errors. */ |
3652 | abort (); | |
252b5132 | 3653 | } |
116c20d2 | 3654 | } |
252b5132 | 3655 | |
116c20d2 NC |
3656 | if (h->written) |
3657 | return TRUE; | |
252b5132 | 3658 | |
116c20d2 | 3659 | h->written = TRUE; |
252b5132 | 3660 | |
116c20d2 NC |
3661 | /* An indx of -2 means the symbol must be written. */ |
3662 | if (h->indx != -2 | |
57402f1e NC |
3663 | && (flaginfo->info->strip == strip_all |
3664 | || (flaginfo->info->strip == strip_some | |
3665 | && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string, | |
116c20d2 NC |
3666 | FALSE, FALSE) == NULL))) |
3667 | return TRUE; | |
252b5132 | 3668 | |
116c20d2 | 3669 | switch (h->root.type) |
252b5132 | 3670 | { |
116c20d2 NC |
3671 | default: |
3672 | case bfd_link_hash_warning: | |
3673 | abort (); | |
3674 | /* Avoid variable not initialized warnings. */ | |
3675 | return TRUE; | |
3676 | case bfd_link_hash_new: | |
3677 | /* This can happen for set symbols when sets are not being | |
07d6d2b8 | 3678 | built. */ |
116c20d2 NC |
3679 | return TRUE; |
3680 | case bfd_link_hash_undefined: | |
3681 | type = N_UNDF | N_EXT; | |
3682 | val = 0; | |
3683 | break; | |
3684 | case bfd_link_hash_defined: | |
3685 | case bfd_link_hash_defweak: | |
3686 | { | |
3687 | asection *sec; | |
252b5132 | 3688 | |
116c20d2 NC |
3689 | sec = h->root.u.def.section->output_section; |
3690 | BFD_ASSERT (bfd_is_abs_section (sec) | |
3691 | || sec->owner == output_bfd); | |
3692 | if (sec == obj_textsec (output_bfd)) | |
3693 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; | |
3694 | else if (sec == obj_datasec (output_bfd)) | |
3695 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; | |
3696 | else if (sec == obj_bsssec (output_bfd)) | |
3697 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; | |
3698 | else | |
3699 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; | |
3700 | type |= N_EXT; | |
3701 | val = (h->root.u.def.value | |
3702 | + sec->vma | |
3703 | + h->root.u.def.section->output_offset); | |
3704 | } | |
3705 | break; | |
3706 | case bfd_link_hash_common: | |
3707 | type = N_UNDF | N_EXT; | |
3708 | val = h->root.u.c.size; | |
3709 | break; | |
3710 | case bfd_link_hash_undefweak: | |
3711 | type = N_WEAKU; | |
3712 | val = 0; | |
c38eb2a6 | 3713 | break; |
116c20d2 NC |
3714 | case bfd_link_hash_indirect: |
3715 | /* We ignore these symbols, since the indirected symbol is | |
3716 | already in the hash table. */ | |
3717 | return TRUE; | |
3718 | } | |
252b5132 | 3719 | |
116c20d2 NC |
3720 | H_PUT_8 (output_bfd, type, outsym.e_type); |
3721 | H_PUT_8 (output_bfd, 0, outsym.e_other); | |
3722 | H_PUT_16 (output_bfd, 0, outsym.e_desc); | |
57402f1e | 3723 | indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string, |
116c20d2 NC |
3724 | FALSE); |
3725 | if (indx == - (bfd_size_type) 1) | |
3726 | /* FIXME: No way to handle errors. */ | |
3727 | abort (); | |
252b5132 | 3728 | |
116c20d2 NC |
3729 | PUT_WORD (output_bfd, indx, outsym.e_strx); |
3730 | PUT_WORD (output_bfd, val, outsym.e_value); | |
252b5132 | 3731 | |
116c20d2 | 3732 | amt = EXTERNAL_NLIST_SIZE; |
57402f1e | 3733 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0 |
116c20d2 NC |
3734 | || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt) |
3735 | /* FIXME: No way to handle errors. */ | |
3736 | abort (); | |
252b5132 | 3737 | |
57402f1e | 3738 | flaginfo->symoff += EXTERNAL_NLIST_SIZE; |
116c20d2 NC |
3739 | h->indx = obj_aout_external_sym_count (output_bfd); |
3740 | ++obj_aout_external_sym_count (output_bfd); | |
252b5132 | 3741 | |
116c20d2 NC |
3742 | return TRUE; |
3743 | } | |
252b5132 | 3744 | |
116c20d2 | 3745 | /* Handle a link order which is supposed to generate a reloc. */ |
252b5132 | 3746 | |
116c20d2 | 3747 | static bfd_boolean |
57402f1e | 3748 | aout_link_reloc_link_order (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3749 | asection *o, |
3750 | struct bfd_link_order *p) | |
3751 | { | |
3752 | struct bfd_link_order_reloc *pr; | |
3753 | int r_index; | |
3754 | int r_extern; | |
3755 | reloc_howto_type *howto; | |
3756 | file_ptr *reloff_ptr = NULL; | |
3757 | struct reloc_std_external srel; | |
3758 | struct reloc_ext_external erel; | |
3759 | void * rel_ptr; | |
3760 | bfd_size_type amt; | |
252b5132 | 3761 | |
116c20d2 | 3762 | pr = p->u.reloc.p; |
252b5132 | 3763 | |
116c20d2 NC |
3764 | if (p->type == bfd_section_reloc_link_order) |
3765 | { | |
3766 | r_extern = 0; | |
3767 | if (bfd_is_abs_section (pr->u.section)) | |
3768 | r_index = N_ABS | N_EXT; | |
3769 | else | |
3770 | { | |
57402f1e | 3771 | BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd); |
116c20d2 NC |
3772 | r_index = pr->u.section->target_index; |
3773 | } | |
3774 | } | |
3775 | else | |
3776 | { | |
3777 | struct aout_link_hash_entry *h; | |
252b5132 | 3778 | |
116c20d2 NC |
3779 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); |
3780 | r_extern = 1; | |
3781 | h = ((struct aout_link_hash_entry *) | |
57402f1e | 3782 | bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info, |
116c20d2 NC |
3783 | pr->u.name, FALSE, FALSE, TRUE)); |
3784 | if (h != NULL | |
3785 | && h->indx >= 0) | |
3786 | r_index = h->indx; | |
3787 | else if (h != NULL) | |
3788 | { | |
3789 | /* We decided to strip this symbol, but it turns out that we | |
3790 | can't. Note that we lose the other and desc information | |
3791 | here. I don't think that will ever matter for a global | |
3792 | symbol. */ | |
3793 | h->indx = -2; | |
3794 | h->written = FALSE; | |
57402f1e | 3795 | if (!aout_link_write_other_symbol (&h->root.root, flaginfo)) |
116c20d2 NC |
3796 | return FALSE; |
3797 | r_index = h->indx; | |
3798 | } | |
3799 | else | |
3800 | { | |
1a72702b AM |
3801 | (*flaginfo->info->callbacks->unattached_reloc) |
3802 | (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0); | |
116c20d2 NC |
3803 | r_index = 0; |
3804 | } | |
3805 | } | |
252b5132 | 3806 | |
57402f1e | 3807 | howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc); |
116c20d2 | 3808 | if (howto == 0) |
252b5132 | 3809 | { |
116c20d2 NC |
3810 | bfd_set_error (bfd_error_bad_value); |
3811 | return FALSE; | |
252b5132 RH |
3812 | } |
3813 | ||
57402f1e NC |
3814 | if (o == obj_textsec (flaginfo->output_bfd)) |
3815 | reloff_ptr = &flaginfo->treloff; | |
3816 | else if (o == obj_datasec (flaginfo->output_bfd)) | |
3817 | reloff_ptr = &flaginfo->dreloff; | |
116c20d2 NC |
3818 | else |
3819 | abort (); | |
3820 | ||
57402f1e | 3821 | if (obj_reloc_entry_size (flaginfo->output_bfd) == RELOC_STD_SIZE) |
252b5132 | 3822 | { |
116c20d2 | 3823 | #ifdef MY_put_reloc |
57402f1e | 3824 | MY_put_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, howto, |
116c20d2 NC |
3825 | &srel); |
3826 | #else | |
3827 | { | |
3828 | int r_pcrel; | |
3829 | int r_baserel; | |
3830 | int r_jmptable; | |
3831 | int r_relative; | |
3832 | int r_length; | |
252b5132 | 3833 | |
116c20d2 NC |
3834 | r_pcrel = (int) howto->pc_relative; |
3835 | r_baserel = (howto->type & 8) != 0; | |
3836 | r_jmptable = (howto->type & 16) != 0; | |
3837 | r_relative = (howto->type & 32) != 0; | |
3838 | r_length = howto->size; | |
252b5132 | 3839 | |
57402f1e NC |
3840 | PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address); |
3841 | if (bfd_header_big_endian (flaginfo->output_bfd)) | |
116c20d2 NC |
3842 | { |
3843 | srel.r_index[0] = r_index >> 16; | |
3844 | srel.r_index[1] = r_index >> 8; | |
3845 | srel.r_index[2] = r_index; | |
3846 | srel.r_type[0] = | |
3847 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
3848 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
3849 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
3850 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
3851 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
3852 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
3853 | } | |
3854 | else | |
3855 | { | |
3856 | srel.r_index[2] = r_index >> 16; | |
3857 | srel.r_index[1] = r_index >> 8; | |
3858 | srel.r_index[0] = r_index; | |
3859 | srel.r_type[0] = | |
3860 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
3861 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
3862 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
3863 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
3864 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
3865 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
3866 | } | |
3867 | } | |
3868 | #endif | |
3869 | rel_ptr = (void *) &srel; | |
252b5132 | 3870 | |
116c20d2 NC |
3871 | /* We have to write the addend into the object file, since |
3872 | standard a.out relocs are in place. It would be more | |
3873 | reliable if we had the current contents of the file here, | |
3874 | rather than assuming zeroes, but we can't read the file since | |
3875 | it was opened using bfd_openw. */ | |
3876 | if (pr->addend != 0) | |
252b5132 | 3877 | { |
116c20d2 NC |
3878 | bfd_size_type size; |
3879 | bfd_reloc_status_type r; | |
3880 | bfd_byte *buf; | |
3881 | bfd_boolean ok; | |
3882 | ||
3883 | size = bfd_get_reloc_size (howto); | |
a50b1753 | 3884 | buf = (bfd_byte *) bfd_zmalloc (size); |
6346d5ca | 3885 | if (buf == NULL && size != 0) |
116c20d2 | 3886 | return FALSE; |
57402f1e | 3887 | r = MY_relocate_contents (howto, flaginfo->output_bfd, |
116c20d2 NC |
3888 | (bfd_vma) pr->addend, buf); |
3889 | switch (r) | |
252b5132 | 3890 | { |
116c20d2 NC |
3891 | case bfd_reloc_ok: |
3892 | break; | |
3893 | default: | |
3894 | case bfd_reloc_outofrange: | |
3895 | abort (); | |
3896 | case bfd_reloc_overflow: | |
1a72702b AM |
3897 | (*flaginfo->info->callbacks->reloc_overflow) |
3898 | (flaginfo->info, NULL, | |
3899 | (p->type == bfd_section_reloc_link_order | |
3900 | ? bfd_section_name (flaginfo->output_bfd, | |
3901 | pr->u.section) | |
3902 | : pr->u.name), | |
3903 | howto->name, pr->addend, NULL, NULL, (bfd_vma) 0); | |
116c20d2 | 3904 | break; |
252b5132 | 3905 | } |
57402f1e | 3906 | ok = bfd_set_section_contents (flaginfo->output_bfd, o, (void *) buf, |
116c20d2 NC |
3907 | (file_ptr) p->offset, size); |
3908 | free (buf); | |
3909 | if (! ok) | |
3910 | return FALSE; | |
252b5132 RH |
3911 | } |
3912 | } | |
116c20d2 | 3913 | else |
252b5132 | 3914 | { |
116c20d2 | 3915 | #ifdef MY_put_ext_reloc |
57402f1e | 3916 | MY_put_ext_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, |
116c20d2 NC |
3917 | howto, &erel, pr->addend); |
3918 | #else | |
57402f1e | 3919 | PUT_WORD (flaginfo->output_bfd, p->offset, erel.r_address); |
252b5132 | 3920 | |
57402f1e | 3921 | if (bfd_header_big_endian (flaginfo->output_bfd)) |
116c20d2 NC |
3922 | { |
3923 | erel.r_index[0] = r_index >> 16; | |
3924 | erel.r_index[1] = r_index >> 8; | |
3925 | erel.r_index[2] = r_index; | |
3926 | erel.r_type[0] = | |
3927 | ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
3928 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
3929 | } | |
3930 | else | |
3931 | { | |
3932 | erel.r_index[2] = r_index >> 16; | |
3933 | erel.r_index[1] = r_index >> 8; | |
3934 | erel.r_index[0] = r_index; | |
3935 | erel.r_type[0] = | |
3936 | (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
3937 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
3938 | } | |
252b5132 | 3939 | |
57402f1e | 3940 | PUT_WORD (flaginfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend); |
116c20d2 | 3941 | #endif /* MY_put_ext_reloc */ |
252b5132 | 3942 | |
116c20d2 | 3943 | rel_ptr = (void *) &erel; |
252b5132 | 3944 | } |
252b5132 | 3945 | |
57402f1e NC |
3946 | amt = obj_reloc_entry_size (flaginfo->output_bfd); |
3947 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 | |
3948 | || bfd_bwrite (rel_ptr, amt, flaginfo->output_bfd) != amt) | |
116c20d2 | 3949 | return FALSE; |
252b5132 | 3950 | |
57402f1e | 3951 | *reloff_ptr += obj_reloc_entry_size (flaginfo->output_bfd); |
252b5132 | 3952 | |
116c20d2 NC |
3953 | /* Assert that the relocs have not run into the symbols, and that n |
3954 | the text relocs have not run into the data relocs. */ | |
57402f1e NC |
3955 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
3956 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 3957 | || (*reloff_ptr |
57402f1e | 3958 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
116c20d2 NC |
3959 | |
3960 | return TRUE; | |
252b5132 RH |
3961 | } |
3962 | ||
116c20d2 | 3963 | /* Get the section corresponding to a reloc index. */ |
252b5132 | 3964 | |
116c20d2 NC |
3965 | static INLINE asection * |
3966 | aout_reloc_index_to_section (bfd *abfd, int indx) | |
252b5132 | 3967 | { |
116c20d2 | 3968 | switch (indx & N_TYPE) |
252b5132 | 3969 | { |
116c20d2 NC |
3970 | case N_TEXT: return obj_textsec (abfd); |
3971 | case N_DATA: return obj_datasec (abfd); | |
3972 | case N_BSS: return obj_bsssec (abfd); | |
3973 | case N_ABS: | |
3974 | case N_UNDF: return bfd_abs_section_ptr; | |
3975 | default: abort (); | |
252b5132 | 3976 | } |
116c20d2 | 3977 | return NULL; |
252b5132 RH |
3978 | } |
3979 | ||
116c20d2 | 3980 | /* Relocate an a.out section using standard a.out relocs. */ |
252b5132 | 3981 | |
b34976b6 | 3982 | static bfd_boolean |
57402f1e | 3983 | aout_link_input_section_std (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
3984 | bfd *input_bfd, |
3985 | asection *input_section, | |
3986 | struct reloc_std_external *relocs, | |
3987 | bfd_size_type rel_size, | |
3988 | bfd_byte *contents) | |
252b5132 | 3989 | { |
116c20d2 NC |
3990 | bfd_boolean (*check_dynamic_reloc) |
3991 | (struct bfd_link_info *, bfd *, asection *, | |
3992 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
3993 | bfd_vma *); | |
252b5132 | 3994 | bfd *output_bfd; |
116c20d2 NC |
3995 | bfd_boolean relocatable; |
3996 | struct external_nlist *syms; | |
252b5132 | 3997 | char *strings; |
116c20d2 | 3998 | struct aout_link_hash_entry **sym_hashes; |
252b5132 | 3999 | int *symbol_map; |
116c20d2 NC |
4000 | bfd_size_type reloc_count; |
4001 | struct reloc_std_external *rel; | |
4002 | struct reloc_std_external *rel_end; | |
252b5132 | 4003 | |
57402f1e | 4004 | output_bfd = flaginfo->output_bfd; |
116c20d2 | 4005 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
252b5132 | 4006 | |
116c20d2 NC |
4007 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE); |
4008 | BFD_ASSERT (input_bfd->xvec->header_byteorder | |
4009 | == output_bfd->xvec->header_byteorder); | |
252b5132 | 4010 | |
0e1862bb | 4011 | relocatable = bfd_link_relocatable (flaginfo->info); |
116c20d2 NC |
4012 | syms = obj_aout_external_syms (input_bfd); |
4013 | strings = obj_aout_external_strings (input_bfd); | |
4014 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4015 | symbol_map = flaginfo->symbol_map; |
116c20d2 NC |
4016 | |
4017 | reloc_count = rel_size / RELOC_STD_SIZE; | |
4018 | rel = relocs; | |
4019 | rel_end = rel + reloc_count; | |
4020 | for (; rel < rel_end; rel++) | |
252b5132 | 4021 | { |
116c20d2 NC |
4022 | bfd_vma r_addr; |
4023 | int r_index; | |
4024 | int r_extern; | |
4025 | int r_pcrel; | |
4026 | int r_baserel = 0; | |
4027 | reloc_howto_type *howto; | |
4028 | struct aout_link_hash_entry *h = NULL; | |
4029 | bfd_vma relocation; | |
4030 | bfd_reloc_status_type r; | |
252b5132 | 4031 | |
116c20d2 | 4032 | r_addr = GET_SWORD (input_bfd, rel->r_address); |
252b5132 | 4033 | |
116c20d2 NC |
4034 | #ifdef MY_reloc_howto |
4035 | howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel); | |
4036 | #else | |
4037 | { | |
4038 | int r_jmptable; | |
4039 | int r_relative; | |
4040 | int r_length; | |
4041 | unsigned int howto_idx; | |
252b5132 | 4042 | |
116c20d2 NC |
4043 | if (bfd_header_big_endian (input_bfd)) |
4044 | { | |
4045 | r_index = (((unsigned int) rel->r_index[0] << 16) | |
4046 | | ((unsigned int) rel->r_index[1] << 8) | |
4047 | | rel->r_index[2]); | |
4048 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
4049 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
4050 | r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
4051 | r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
4052 | r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
4053 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
4054 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
4055 | } | |
4056 | else | |
4057 | { | |
4058 | r_index = (((unsigned int) rel->r_index[2] << 16) | |
4059 | | ((unsigned int) rel->r_index[1] << 8) | |
4060 | | rel->r_index[0]); | |
4061 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
4062 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
4063 | r_baserel = (0 != (rel->r_type[0] | |
4064 | & RELOC_STD_BITS_BASEREL_LITTLE)); | |
4065 | r_jmptable= (0 != (rel->r_type[0] | |
4066 | & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
4067 | r_relative= (0 != (rel->r_type[0] | |
4068 | & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
4069 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
4070 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
4071 | } | |
252b5132 | 4072 | |
116c20d2 NC |
4073 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel |
4074 | + 16 * r_jmptable + 32 * r_relative); | |
ad756e3f AM |
4075 | if (howto_idx < TABLE_SIZE (howto_table_std)) |
4076 | howto = howto_table_std + howto_idx; | |
4077 | else | |
4078 | howto = NULL; | |
116c20d2 NC |
4079 | } |
4080 | #endif | |
252b5132 | 4081 | |
ad756e3f AM |
4082 | if (howto == NULL) |
4083 | { | |
0aa13fee AM |
4084 | _bfd_error_handler (_("%pB: unsupported relocation type"), |
4085 | input_bfd); | |
ad756e3f AM |
4086 | bfd_set_error (bfd_error_bad_value); |
4087 | return FALSE; | |
4088 | } | |
4089 | ||
116c20d2 | 4090 | if (relocatable) |
252b5132 | 4091 | { |
116c20d2 NC |
4092 | /* We are generating a relocatable output file, and must |
4093 | modify the reloc accordingly. */ | |
4094 | if (r_extern) | |
252b5132 | 4095 | { |
116c20d2 NC |
4096 | /* If we know the symbol this relocation is against, |
4097 | convert it into a relocation against a section. This | |
4098 | is what the native linker does. */ | |
4099 | h = sym_hashes[r_index]; | |
4100 | if (h != NULL | |
4101 | && (h->root.type == bfd_link_hash_defined | |
4102 | || h->root.type == bfd_link_hash_defweak)) | |
252b5132 | 4103 | { |
252b5132 RH |
4104 | asection *output_section; |
4105 | ||
116c20d2 NC |
4106 | /* Change the r_extern value. */ |
4107 | if (bfd_header_big_endian (output_bfd)) | |
4108 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG; | |
4109 | else | |
4110 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE; | |
252b5132 | 4111 | |
116c20d2 NC |
4112 | /* Compute a new r_index. */ |
4113 | output_section = h->root.u.def.section->output_section; | |
252b5132 | 4114 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 | 4115 | r_index = N_TEXT; |
252b5132 | 4116 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 | 4117 | r_index = N_DATA; |
252b5132 | 4118 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 | 4119 | r_index = N_BSS; |
252b5132 | 4120 | else |
116c20d2 | 4121 | r_index = N_ABS; |
252b5132 | 4122 | |
116c20d2 NC |
4123 | /* Add the symbol value and the section VMA to the |
4124 | addend stored in the contents. */ | |
4125 | relocation = (h->root.u.def.value | |
4126 | + output_section->vma | |
4127 | + h->root.u.def.section->output_offset); | |
252b5132 | 4128 | } |
116c20d2 | 4129 | else |
252b5132 | 4130 | { |
116c20d2 NC |
4131 | /* We must change r_index according to the symbol |
4132 | map. */ | |
4133 | r_index = symbol_map[r_index]; | |
252b5132 | 4134 | |
116c20d2 | 4135 | if (r_index == -1) |
252b5132 | 4136 | { |
116c20d2 | 4137 | if (h != NULL) |
252b5132 | 4138 | { |
116c20d2 | 4139 | /* We decided to strip this symbol, but it |
07d6d2b8 AM |
4140 | turns out that we can't. Note that we |
4141 | lose the other and desc information here. | |
4142 | I don't think that will ever matter for a | |
4143 | global symbol. */ | |
116c20d2 | 4144 | if (h->indx < 0) |
252b5132 | 4145 | { |
116c20d2 NC |
4146 | h->indx = -2; |
4147 | h->written = FALSE; | |
7686d77d | 4148 | if (!aout_link_write_other_symbol (&h->root.root, |
57402f1e | 4149 | flaginfo)) |
116c20d2 | 4150 | return FALSE; |
252b5132 | 4151 | } |
116c20d2 NC |
4152 | r_index = h->indx; |
4153 | } | |
4154 | else | |
4155 | { | |
4156 | const char *name; | |
4157 | ||
4158 | name = strings + GET_WORD (input_bfd, | |
4159 | syms[r_index].e_strx); | |
1a72702b AM |
4160 | (*flaginfo->info->callbacks->unattached_reloc) |
4161 | (flaginfo->info, name, | |
4162 | input_bfd, input_section, r_addr); | |
116c20d2 | 4163 | r_index = 0; |
252b5132 RH |
4164 | } |
4165 | } | |
116c20d2 NC |
4166 | |
4167 | relocation = 0; | |
252b5132 RH |
4168 | } |
4169 | ||
116c20d2 NC |
4170 | /* Write out the new r_index value. */ |
4171 | if (bfd_header_big_endian (output_bfd)) | |
252b5132 | 4172 | { |
116c20d2 NC |
4173 | rel->r_index[0] = r_index >> 16; |
4174 | rel->r_index[1] = r_index >> 8; | |
4175 | rel->r_index[2] = r_index; | |
252b5132 RH |
4176 | } |
4177 | else | |
4178 | { | |
116c20d2 NC |
4179 | rel->r_index[2] = r_index >> 16; |
4180 | rel->r_index[1] = r_index >> 8; | |
4181 | rel->r_index[0] = r_index; | |
252b5132 RH |
4182 | } |
4183 | } | |
252b5132 | 4184 | else |
116c20d2 NC |
4185 | { |
4186 | asection *section; | |
252b5132 | 4187 | |
116c20d2 NC |
4188 | /* This is a relocation against a section. We must |
4189 | adjust by the amount that the section moved. */ | |
4190 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4191 | relocation = (section->output_section->vma | |
4192 | + section->output_offset | |
4193 | - section->vma); | |
4194 | } | |
252b5132 | 4195 | |
116c20d2 NC |
4196 | /* Change the address of the relocation. */ |
4197 | PUT_WORD (output_bfd, | |
4198 | r_addr + input_section->output_offset, | |
4199 | rel->r_address); | |
252b5132 | 4200 | |
116c20d2 NC |
4201 | /* Adjust a PC relative relocation by removing the reference |
4202 | to the original address in the section and including the | |
4203 | reference to the new address. */ | |
4204 | if (r_pcrel) | |
4205 | relocation -= (input_section->output_section->vma | |
4206 | + input_section->output_offset | |
4207 | - input_section->vma); | |
e92d460e | 4208 | |
116c20d2 NC |
4209 | #ifdef MY_relocatable_reloc |
4210 | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); | |
4211 | #endif | |
252b5132 | 4212 | |
116c20d2 NC |
4213 | if (relocation == 0) |
4214 | r = bfd_reloc_ok; | |
4215 | else | |
4216 | r = MY_relocate_contents (howto, | |
4217 | input_bfd, relocation, | |
4218 | contents + r_addr); | |
252b5132 | 4219 | } |
116c20d2 NC |
4220 | else |
4221 | { | |
4222 | bfd_boolean hundef; | |
252b5132 | 4223 | |
116c20d2 NC |
4224 | /* We are generating an executable, and must do a full |
4225 | relocation. */ | |
4226 | hundef = FALSE; | |
252b5132 | 4227 | |
116c20d2 NC |
4228 | if (r_extern) |
4229 | { | |
4230 | h = sym_hashes[r_index]; | |
252b5132 | 4231 | |
116c20d2 NC |
4232 | if (h != NULL |
4233 | && (h->root.type == bfd_link_hash_defined | |
4234 | || h->root.type == bfd_link_hash_defweak)) | |
4235 | { | |
4236 | relocation = (h->root.u.def.value | |
4237 | + h->root.u.def.section->output_section->vma | |
4238 | + h->root.u.def.section->output_offset); | |
4239 | } | |
4240 | else if (h != NULL | |
4241 | && h->root.type == bfd_link_hash_undefweak) | |
4242 | relocation = 0; | |
4243 | else | |
4244 | { | |
4245 | hundef = TRUE; | |
4246 | relocation = 0; | |
4247 | } | |
4248 | } | |
4249 | else | |
4250 | { | |
4251 | asection *section; | |
252b5132 | 4252 | |
116c20d2 NC |
4253 | section = aout_reloc_index_to_section (input_bfd, r_index); |
4254 | relocation = (section->output_section->vma | |
4255 | + section->output_offset | |
4256 | - section->vma); | |
4257 | if (r_pcrel) | |
4258 | relocation += input_section->vma; | |
4259 | } | |
252b5132 | 4260 | |
116c20d2 NC |
4261 | if (check_dynamic_reloc != NULL) |
4262 | { | |
4263 | bfd_boolean skip; | |
252b5132 | 4264 | |
116c20d2 | 4265 | if (! ((*check_dynamic_reloc) |
57402f1e | 4266 | (flaginfo->info, input_bfd, input_section, h, |
116c20d2 NC |
4267 | (void *) rel, contents, &skip, &relocation))) |
4268 | return FALSE; | |
4269 | if (skip) | |
4270 | continue; | |
4271 | } | |
252b5132 | 4272 | |
116c20d2 | 4273 | /* Now warn if a global symbol is undefined. We could not |
07d6d2b8 AM |
4274 | do this earlier, because check_dynamic_reloc might want |
4275 | to skip this reloc. */ | |
0e1862bb | 4276 | if (hundef && ! bfd_link_pic (flaginfo->info) && ! r_baserel) |
116c20d2 NC |
4277 | { |
4278 | const char *name; | |
252b5132 | 4279 | |
116c20d2 NC |
4280 | if (h != NULL) |
4281 | name = h->root.root.string; | |
4282 | else | |
4283 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
1a72702b AM |
4284 | (*flaginfo->info->callbacks->undefined_symbol) |
4285 | (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE); | |
116c20d2 | 4286 | } |
252b5132 | 4287 | |
116c20d2 NC |
4288 | r = MY_final_link_relocate (howto, |
4289 | input_bfd, input_section, | |
4290 | contents, r_addr, relocation, | |
4291 | (bfd_vma) 0); | |
252b5132 | 4292 | } |
252b5132 | 4293 | |
116c20d2 NC |
4294 | if (r != bfd_reloc_ok) |
4295 | { | |
4296 | switch (r) | |
4297 | { | |
4298 | default: | |
4299 | case bfd_reloc_outofrange: | |
4300 | abort (); | |
4301 | case bfd_reloc_overflow: | |
4302 | { | |
4303 | const char *name; | |
252b5132 | 4304 | |
116c20d2 NC |
4305 | if (h != NULL) |
4306 | name = NULL; | |
4307 | else if (r_extern) | |
4308 | name = strings + GET_WORD (input_bfd, | |
4309 | syms[r_index].e_strx); | |
4310 | else | |
4311 | { | |
4312 | asection *s; | |
252b5132 | 4313 | |
116c20d2 NC |
4314 | s = aout_reloc_index_to_section (input_bfd, r_index); |
4315 | name = bfd_section_name (input_bfd, s); | |
4316 | } | |
1a72702b AM |
4317 | (*flaginfo->info->callbacks->reloc_overflow) |
4318 | (flaginfo->info, (h ? &h->root : NULL), name, howto->name, | |
4319 | (bfd_vma) 0, input_bfd, input_section, r_addr); | |
116c20d2 NC |
4320 | } |
4321 | break; | |
4322 | } | |
4323 | } | |
252b5132 RH |
4324 | } |
4325 | ||
b34976b6 | 4326 | return TRUE; |
252b5132 RH |
4327 | } |
4328 | ||
116c20d2 | 4329 | /* Relocate an a.out section using extended a.out relocs. */ |
252b5132 | 4330 | |
b34976b6 | 4331 | static bfd_boolean |
57402f1e | 4332 | aout_link_input_section_ext (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
4333 | bfd *input_bfd, |
4334 | asection *input_section, | |
4335 | struct reloc_ext_external *relocs, | |
4336 | bfd_size_type rel_size, | |
4337 | bfd_byte *contents) | |
252b5132 | 4338 | { |
b34976b6 | 4339 | bfd_boolean (*check_dynamic_reloc) |
116c20d2 NC |
4340 | (struct bfd_link_info *, bfd *, asection *, |
4341 | struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *, | |
4342 | bfd_vma *); | |
252b5132 | 4343 | bfd *output_bfd; |
1049f94e | 4344 | bfd_boolean relocatable; |
252b5132 RH |
4345 | struct external_nlist *syms; |
4346 | char *strings; | |
4347 | struct aout_link_hash_entry **sym_hashes; | |
4348 | int *symbol_map; | |
4349 | bfd_size_type reloc_count; | |
116c20d2 NC |
4350 | struct reloc_ext_external *rel; |
4351 | struct reloc_ext_external *rel_end; | |
252b5132 | 4352 | |
57402f1e | 4353 | output_bfd = flaginfo->output_bfd; |
252b5132 RH |
4354 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
4355 | ||
116c20d2 | 4356 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE); |
252b5132 RH |
4357 | BFD_ASSERT (input_bfd->xvec->header_byteorder |
4358 | == output_bfd->xvec->header_byteorder); | |
4359 | ||
0e1862bb | 4360 | relocatable = bfd_link_relocatable (flaginfo->info); |
252b5132 RH |
4361 | syms = obj_aout_external_syms (input_bfd); |
4362 | strings = obj_aout_external_strings (input_bfd); | |
4363 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4364 | symbol_map = flaginfo->symbol_map; |
252b5132 | 4365 | |
116c20d2 | 4366 | reloc_count = rel_size / RELOC_EXT_SIZE; |
252b5132 RH |
4367 | rel = relocs; |
4368 | rel_end = rel + reloc_count; | |
4369 | for (; rel < rel_end; rel++) | |
4370 | { | |
4371 | bfd_vma r_addr; | |
4372 | int r_index; | |
4373 | int r_extern; | |
116c20d2 NC |
4374 | unsigned int r_type; |
4375 | bfd_vma r_addend; | |
252b5132 | 4376 | struct aout_link_hash_entry *h = NULL; |
116c20d2 | 4377 | asection *r_section = NULL; |
252b5132 | 4378 | bfd_vma relocation; |
252b5132 RH |
4379 | |
4380 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
4381 | ||
116c20d2 NC |
4382 | if (bfd_header_big_endian (input_bfd)) |
4383 | { | |
4384 | r_index = (((unsigned int) rel->r_index[0] << 16) | |
4385 | | ((unsigned int) rel->r_index[1] << 8) | |
4386 | | rel->r_index[2]); | |
4387 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
4388 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
4389 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
4390 | } | |
4391 | else | |
4392 | { | |
4393 | r_index = (((unsigned int) rel->r_index[2] << 16) | |
4394 | | ((unsigned int) rel->r_index[1] << 8) | |
4395 | | rel->r_index[0]); | |
4396 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
4397 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
4398 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
4399 | } | |
252b5132 | 4400 | |
116c20d2 | 4401 | r_addend = GET_SWORD (input_bfd, rel->r_addend); |
252b5132 | 4402 | |
ad756e3f AM |
4403 | if (r_type >= TABLE_SIZE (howto_table_ext)) |
4404 | { | |
0aa13fee AM |
4405 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4406 | input_bfd, r_type); | |
ad756e3f AM |
4407 | bfd_set_error (bfd_error_bad_value); |
4408 | return FALSE; | |
4409 | } | |
252b5132 | 4410 | |
1049f94e | 4411 | if (relocatable) |
252b5132 | 4412 | { |
1049f94e | 4413 | /* We are generating a relocatable output file, and must |
252b5132 | 4414 | modify the reloc accordingly. */ |
116c20d2 NC |
4415 | if (r_extern |
4416 | || r_type == (unsigned int) RELOC_BASE10 | |
4417 | || r_type == (unsigned int) RELOC_BASE13 | |
4418 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
4419 | { |
4420 | /* If we know the symbol this relocation is against, | |
4421 | convert it into a relocation against a section. This | |
4422 | is what the native linker does. */ | |
116c20d2 NC |
4423 | if (r_type == (unsigned int) RELOC_BASE10 |
4424 | || r_type == (unsigned int) RELOC_BASE13 | |
4425 | || r_type == (unsigned int) RELOC_BASE22) | |
4426 | h = NULL; | |
4427 | else | |
4428 | h = sym_hashes[r_index]; | |
4429 | if (h != NULL | |
252b5132 RH |
4430 | && (h->root.type == bfd_link_hash_defined |
4431 | || h->root.type == bfd_link_hash_defweak)) | |
4432 | { | |
4433 | asection *output_section; | |
4434 | ||
4435 | /* Change the r_extern value. */ | |
4436 | if (bfd_header_big_endian (output_bfd)) | |
116c20d2 | 4437 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG; |
252b5132 | 4438 | else |
116c20d2 | 4439 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE; |
252b5132 RH |
4440 | |
4441 | /* Compute a new r_index. */ | |
4442 | output_section = h->root.u.def.section->output_section; | |
4443 | if (output_section == obj_textsec (output_bfd)) | |
4444 | r_index = N_TEXT; | |
4445 | else if (output_section == obj_datasec (output_bfd)) | |
4446 | r_index = N_DATA; | |
4447 | else if (output_section == obj_bsssec (output_bfd)) | |
4448 | r_index = N_BSS; | |
4449 | else | |
4450 | r_index = N_ABS; | |
4451 | ||
4452 | /* Add the symbol value and the section VMA to the | |
116c20d2 | 4453 | addend. */ |
252b5132 RH |
4454 | relocation = (h->root.u.def.value |
4455 | + output_section->vma | |
4456 | + h->root.u.def.section->output_offset); | |
116c20d2 NC |
4457 | |
4458 | /* Now RELOCATION is the VMA of the final | |
4459 | destination. If this is a PC relative reloc, | |
4460 | then ADDEND is the negative of the source VMA. | |
4461 | We want to set ADDEND to the difference between | |
4462 | the destination VMA and the source VMA, which | |
4463 | means we must adjust RELOCATION by the change in | |
4464 | the source VMA. This is done below. */ | |
252b5132 RH |
4465 | } |
4466 | else | |
4467 | { | |
4468 | /* We must change r_index according to the symbol | |
4469 | map. */ | |
4470 | r_index = symbol_map[r_index]; | |
4471 | ||
4472 | if (r_index == -1) | |
4473 | { | |
4474 | if (h != NULL) | |
4475 | { | |
4476 | /* We decided to strip this symbol, but it | |
07d6d2b8 AM |
4477 | turns out that we can't. Note that we |
4478 | lose the other and desc information here. | |
4479 | I don't think that will ever matter for a | |
4480 | global symbol. */ | |
252b5132 RH |
4481 | if (h->indx < 0) |
4482 | { | |
4483 | h->indx = -2; | |
b34976b6 | 4484 | h->written = FALSE; |
7686d77d | 4485 | if (!aout_link_write_other_symbol (&h->root.root, |
57402f1e | 4486 | flaginfo)) |
b34976b6 | 4487 | return FALSE; |
252b5132 RH |
4488 | } |
4489 | r_index = h->indx; | |
4490 | } | |
4491 | else | |
4492 | { | |
4493 | const char *name; | |
4494 | ||
4495 | name = strings + GET_WORD (input_bfd, | |
4496 | syms[r_index].e_strx); | |
1a72702b AM |
4497 | (*flaginfo->info->callbacks->unattached_reloc) |
4498 | (flaginfo->info, name, | |
4499 | input_bfd, input_section, r_addr); | |
252b5132 RH |
4500 | r_index = 0; |
4501 | } | |
4502 | } | |
4503 | ||
4504 | relocation = 0; | |
116c20d2 NC |
4505 | |
4506 | /* If this is a PC relative reloc, then the addend | |
4507 | is the negative of the source VMA. We must | |
4508 | adjust it by the change in the source VMA. This | |
4509 | is done below. */ | |
252b5132 RH |
4510 | } |
4511 | ||
4512 | /* Write out the new r_index value. */ | |
4513 | if (bfd_header_big_endian (output_bfd)) | |
4514 | { | |
4515 | rel->r_index[0] = r_index >> 16; | |
4516 | rel->r_index[1] = r_index >> 8; | |
4517 | rel->r_index[2] = r_index; | |
4518 | } | |
4519 | else | |
4520 | { | |
4521 | rel->r_index[2] = r_index >> 16; | |
4522 | rel->r_index[1] = r_index >> 8; | |
4523 | rel->r_index[0] = r_index; | |
4524 | } | |
4525 | } | |
4526 | else | |
4527 | { | |
252b5132 RH |
4528 | /* This is a relocation against a section. We must |
4529 | adjust by the amount that the section moved. */ | |
116c20d2 NC |
4530 | r_section = aout_reloc_index_to_section (input_bfd, r_index); |
4531 | relocation = (r_section->output_section->vma | |
4532 | + r_section->output_offset | |
4533 | - r_section->vma); | |
252b5132 | 4534 | |
116c20d2 NC |
4535 | /* If this is a PC relative reloc, then the addend is |
4536 | the difference in VMA between the destination and the | |
4537 | source. We have just adjusted for the change in VMA | |
4538 | of the destination, so we must also adjust by the | |
4539 | change in VMA of the source. This is done below. */ | |
4540 | } | |
252b5132 | 4541 | |
116c20d2 NC |
4542 | /* As described above, we must always adjust a PC relative |
4543 | reloc by the change in VMA of the source. However, if | |
4544 | pcrel_offset is set, then the addend does not include the | |
4545 | location within the section, in which case we don't need | |
4546 | to adjust anything. */ | |
4547 | if (howto_table_ext[r_type].pc_relative | |
4548 | && ! howto_table_ext[r_type].pcrel_offset) | |
252b5132 RH |
4549 | relocation -= (input_section->output_section->vma |
4550 | + input_section->output_offset | |
4551 | - input_section->vma); | |
4552 | ||
116c20d2 NC |
4553 | /* Change the addend if necessary. */ |
4554 | if (relocation != 0) | |
4555 | PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend); | |
252b5132 | 4556 | |
116c20d2 NC |
4557 | /* Change the address of the relocation. */ |
4558 | PUT_WORD (output_bfd, | |
4559 | r_addr + input_section->output_offset, | |
4560 | rel->r_address); | |
252b5132 RH |
4561 | } |
4562 | else | |
4563 | { | |
b34976b6 | 4564 | bfd_boolean hundef; |
116c20d2 | 4565 | bfd_reloc_status_type r; |
252b5132 RH |
4566 | |
4567 | /* We are generating an executable, and must do a full | |
4568 | relocation. */ | |
b34976b6 | 4569 | hundef = FALSE; |
252b5132 RH |
4570 | |
4571 | if (r_extern) | |
4572 | { | |
4573 | h = sym_hashes[r_index]; | |
4574 | ||
116c20d2 | 4575 | if (h != NULL |
252b5132 RH |
4576 | && (h->root.type == bfd_link_hash_defined |
4577 | || h->root.type == bfd_link_hash_defweak)) | |
4578 | { | |
4579 | relocation = (h->root.u.def.value | |
4580 | + h->root.u.def.section->output_section->vma | |
4581 | + h->root.u.def.section->output_offset); | |
4582 | } | |
116c20d2 | 4583 | else if (h != NULL |
252b5132 RH |
4584 | && h->root.type == bfd_link_hash_undefweak) |
4585 | relocation = 0; | |
4586 | else | |
4587 | { | |
b34976b6 | 4588 | hundef = TRUE; |
252b5132 RH |
4589 | relocation = 0; |
4590 | } | |
4591 | } | |
116c20d2 NC |
4592 | else if (r_type == (unsigned int) RELOC_BASE10 |
4593 | || r_type == (unsigned int) RELOC_BASE13 | |
4594 | || r_type == (unsigned int) RELOC_BASE22) | |
4595 | { | |
4596 | struct external_nlist *sym; | |
4597 | int type; | |
4598 | ||
4599 | /* For base relative relocs, r_index is always an index | |
07d6d2b8 | 4600 | into the symbol table, even if r_extern is 0. */ |
116c20d2 NC |
4601 | sym = syms + r_index; |
4602 | type = H_GET_8 (input_bfd, sym->e_type); | |
4603 | if ((type & N_TYPE) == N_TEXT | |
4604 | || type == N_WEAKT) | |
4605 | r_section = obj_textsec (input_bfd); | |
4606 | else if ((type & N_TYPE) == N_DATA | |
4607 | || type == N_WEAKD) | |
4608 | r_section = obj_datasec (input_bfd); | |
4609 | else if ((type & N_TYPE) == N_BSS | |
4610 | || type == N_WEAKB) | |
4611 | r_section = obj_bsssec (input_bfd); | |
4612 | else if ((type & N_TYPE) == N_ABS | |
4613 | || type == N_WEAKA) | |
4614 | r_section = bfd_abs_section_ptr; | |
4615 | else | |
4616 | abort (); | |
4617 | relocation = (r_section->output_section->vma | |
4618 | + r_section->output_offset | |
4619 | + (GET_WORD (input_bfd, sym->e_value) | |
4620 | - r_section->vma)); | |
4621 | } | |
252b5132 RH |
4622 | else |
4623 | { | |
116c20d2 | 4624 | r_section = aout_reloc_index_to_section (input_bfd, r_index); |
252b5132 | 4625 | |
116c20d2 NC |
4626 | /* If this is a PC relative reloc, then R_ADDEND is the |
4627 | difference between the two vmas, or | |
4628 | old_dest_sec + old_dest_off - (old_src_sec + old_src_off) | |
4629 | where | |
4630 | old_dest_sec == section->vma | |
4631 | and | |
4632 | old_src_sec == input_section->vma | |
4633 | and | |
4634 | old_src_off == r_addr | |
4635 | ||
4636 | _bfd_final_link_relocate expects RELOCATION + | |
4637 | R_ADDEND to be the VMA of the destination minus | |
4638 | r_addr (the minus r_addr is because this relocation | |
4639 | is not pcrel_offset, which is a bit confusing and | |
4640 | should, perhaps, be changed), or | |
4641 | new_dest_sec | |
4642 | where | |
4643 | new_dest_sec == output_section->vma + output_offset | |
4644 | We arrange for this to happen by setting RELOCATION to | |
4645 | new_dest_sec + old_src_sec - old_dest_sec | |
4646 | ||
4647 | If this is not a PC relative reloc, then R_ADDEND is | |
4648 | simply the VMA of the destination, so we set | |
4649 | RELOCATION to the change in the destination VMA, or | |
4650 | new_dest_sec - old_dest_sec | |
4651 | */ | |
4652 | relocation = (r_section->output_section->vma | |
4653 | + r_section->output_offset | |
4654 | - r_section->vma); | |
4655 | if (howto_table_ext[r_type].pc_relative) | |
252b5132 RH |
4656 | relocation += input_section->vma; |
4657 | } | |
4658 | ||
4659 | if (check_dynamic_reloc != NULL) | |
4660 | { | |
b34976b6 | 4661 | bfd_boolean skip; |
252b5132 RH |
4662 | |
4663 | if (! ((*check_dynamic_reloc) | |
57402f1e | 4664 | (flaginfo->info, input_bfd, input_section, h, |
116c20d2 | 4665 | (void *) rel, contents, &skip, &relocation))) |
b34976b6 | 4666 | return FALSE; |
252b5132 RH |
4667 | if (skip) |
4668 | continue; | |
4669 | } | |
4670 | ||
4671 | /* Now warn if a global symbol is undefined. We could not | |
07d6d2b8 AM |
4672 | do this earlier, because check_dynamic_reloc might want |
4673 | to skip this reloc. */ | |
116c20d2 | 4674 | if (hundef |
0e1862bb | 4675 | && ! bfd_link_pic (flaginfo->info) |
116c20d2 NC |
4676 | && r_type != (unsigned int) RELOC_BASE10 |
4677 | && r_type != (unsigned int) RELOC_BASE13 | |
4678 | && r_type != (unsigned int) RELOC_BASE22) | |
252b5132 RH |
4679 | { |
4680 | const char *name; | |
4681 | ||
4682 | if (h != NULL) | |
4683 | name = h->root.root.string; | |
4684 | else | |
4685 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
1a72702b AM |
4686 | (*flaginfo->info->callbacks->undefined_symbol) |
4687 | (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE); | |
252b5132 RH |
4688 | } |
4689 | ||
116c20d2 NC |
4690 | if (r_type != (unsigned int) RELOC_SPARC_REV32) |
4691 | r = MY_final_link_relocate (howto_table_ext + r_type, | |
4692 | input_bfd, input_section, | |
4693 | contents, r_addr, relocation, | |
4694 | r_addend); | |
4695 | else | |
252b5132 | 4696 | { |
116c20d2 | 4697 | bfd_vma x; |
252b5132 | 4698 | |
116c20d2 NC |
4699 | x = bfd_get_32 (input_bfd, contents + r_addr); |
4700 | x = x + relocation + r_addend; | |
4701 | bfd_putl32 (/*input_bfd,*/ x, contents + r_addr); | |
4702 | r = bfd_reloc_ok; | |
4703 | } | |
4704 | ||
4705 | if (r != bfd_reloc_ok) | |
4706 | { | |
4707 | switch (r) | |
4708 | { | |
4709 | default: | |
4710 | case bfd_reloc_outofrange: | |
4711 | abort (); | |
4712 | case bfd_reloc_overflow: | |
252b5132 | 4713 | { |
116c20d2 | 4714 | const char *name; |
252b5132 | 4715 | |
116c20d2 NC |
4716 | if (h != NULL) |
4717 | name = NULL; | |
4718 | else if (r_extern | |
4719 | || r_type == (unsigned int) RELOC_BASE10 | |
4720 | || r_type == (unsigned int) RELOC_BASE13 | |
4721 | || r_type == (unsigned int) RELOC_BASE22) | |
4722 | name = strings + GET_WORD (input_bfd, | |
4723 | syms[r_index].e_strx); | |
4724 | else | |
4725 | { | |
4726 | asection *s; | |
4727 | ||
4728 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
4729 | name = bfd_section_name (input_bfd, s); | |
4730 | } | |
1a72702b AM |
4731 | (*flaginfo->info->callbacks->reloc_overflow) |
4732 | (flaginfo->info, (h ? &h->root : NULL), name, | |
4733 | howto_table_ext[r_type].name, | |
4734 | r_addend, input_bfd, input_section, r_addr); | |
252b5132 | 4735 | } |
116c20d2 NC |
4736 | break; |
4737 | } | |
252b5132 RH |
4738 | } |
4739 | } | |
4740 | } | |
4741 | ||
b34976b6 | 4742 | return TRUE; |
252b5132 RH |
4743 | } |
4744 | ||
116c20d2 NC |
4745 | /* Link an a.out section into the output file. */ |
4746 | ||
4747 | static bfd_boolean | |
57402f1e | 4748 | aout_link_input_section (struct aout_final_link_info *flaginfo, |
116c20d2 NC |
4749 | bfd *input_bfd, |
4750 | asection *input_section, | |
4751 | file_ptr *reloff_ptr, | |
4752 | bfd_size_type rel_size) | |
4753 | { | |
4754 | bfd_size_type input_size; | |
4755 | void * relocs; | |
4756 | ||
4757 | /* Get the section contents. */ | |
4758 | input_size = input_section->size; | |
4759 | if (! bfd_get_section_contents (input_bfd, input_section, | |
57402f1e | 4760 | (void *) flaginfo->contents, |
116c20d2 NC |
4761 | (file_ptr) 0, input_size)) |
4762 | return FALSE; | |
4763 | ||
4764 | /* Read in the relocs if we haven't already done it. */ | |
4765 | if (aout_section_data (input_section) != NULL | |
4766 | && aout_section_data (input_section)->relocs != NULL) | |
4767 | relocs = aout_section_data (input_section)->relocs; | |
4768 | else | |
4769 | { | |
57402f1e | 4770 | relocs = flaginfo->relocs; |
116c20d2 NC |
4771 | if (rel_size > 0) |
4772 | { | |
4773 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
4774 | || bfd_bread (relocs, rel_size, input_bfd) != rel_size) | |
4775 | return FALSE; | |
4776 | } | |
4777 | } | |
4778 | ||
4779 | /* Relocate the section contents. */ | |
4780 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) | |
4781 | { | |
57402f1e | 4782 | if (! aout_link_input_section_std (flaginfo, input_bfd, input_section, |
116c20d2 | 4783 | (struct reloc_std_external *) relocs, |
57402f1e | 4784 | rel_size, flaginfo->contents)) |
116c20d2 NC |
4785 | return FALSE; |
4786 | } | |
4787 | else | |
4788 | { | |
57402f1e | 4789 | if (! aout_link_input_section_ext (flaginfo, input_bfd, input_section, |
116c20d2 | 4790 | (struct reloc_ext_external *) relocs, |
57402f1e | 4791 | rel_size, flaginfo->contents)) |
116c20d2 NC |
4792 | return FALSE; |
4793 | } | |
4794 | ||
4795 | /* Write out the section contents. */ | |
57402f1e | 4796 | if (! bfd_set_section_contents (flaginfo->output_bfd, |
116c20d2 | 4797 | input_section->output_section, |
57402f1e | 4798 | (void *) flaginfo->contents, |
116c20d2 NC |
4799 | (file_ptr) input_section->output_offset, |
4800 | input_size)) | |
4801 | return FALSE; | |
4802 | ||
4803 | /* If we are producing relocatable output, the relocs were | |
4804 | modified, and we now write them out. */ | |
0e1862bb | 4805 | if (bfd_link_relocatable (flaginfo->info) && rel_size > 0) |
116c20d2 | 4806 | { |
57402f1e | 4807 | if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) |
116c20d2 | 4808 | return FALSE; |
57402f1e | 4809 | if (bfd_bwrite (relocs, rel_size, flaginfo->output_bfd) != rel_size) |
116c20d2 NC |
4810 | return FALSE; |
4811 | *reloff_ptr += rel_size; | |
4812 | ||
4813 | /* Assert that the relocs have not run into the symbols, and | |
4814 | that if these are the text relocs they have not run into the | |
4815 | data relocs. */ | |
57402f1e NC |
4816 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd) |
4817 | && (reloff_ptr != &flaginfo->treloff | |
116c20d2 | 4818 | || (*reloff_ptr |
57402f1e | 4819 | <= obj_datasec (flaginfo->output_bfd)->rel_filepos))); |
116c20d2 NC |
4820 | } |
4821 | ||
4822 | return TRUE; | |
4823 | } | |
4824 | ||
4825 | /* Adjust and write out the symbols for an a.out file. Set the new | |
4826 | symbol indices into a symbol_map. */ | |
252b5132 | 4827 | |
b34976b6 | 4828 | static bfd_boolean |
57402f1e | 4829 | aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
252b5132 | 4830 | { |
252b5132 | 4831 | bfd *output_bfd; |
116c20d2 | 4832 | bfd_size_type sym_count; |
252b5132 | 4833 | char *strings; |
116c20d2 NC |
4834 | enum bfd_link_strip strip; |
4835 | enum bfd_link_discard discard; | |
4836 | struct external_nlist *outsym; | |
4837 | bfd_size_type strtab_index; | |
4838 | struct external_nlist *sym; | |
4839 | struct external_nlist *sym_end; | |
4840 | struct aout_link_hash_entry **sym_hash; | |
252b5132 | 4841 | int *symbol_map; |
116c20d2 NC |
4842 | bfd_boolean pass; |
4843 | bfd_boolean skip_next; | |
252b5132 | 4844 | |
57402f1e | 4845 | output_bfd = flaginfo->output_bfd; |
116c20d2 NC |
4846 | sym_count = obj_aout_external_sym_count (input_bfd); |
4847 | strings = obj_aout_external_strings (input_bfd); | |
57402f1e NC |
4848 | strip = flaginfo->info->strip; |
4849 | discard = flaginfo->info->discard; | |
4850 | outsym = flaginfo->output_syms; | |
252b5132 | 4851 | |
116c20d2 NC |
4852 | /* First write out a symbol for this object file, unless we are |
4853 | discarding such symbols. */ | |
4854 | if (strip != strip_all | |
4855 | && (strip != strip_some | |
57402f1e | 4856 | || bfd_hash_lookup (flaginfo->info->keep_hash, input_bfd->filename, |
116c20d2 NC |
4857 | FALSE, FALSE) != NULL) |
4858 | && discard != discard_all) | |
4859 | { | |
4860 | H_PUT_8 (output_bfd, N_TEXT, outsym->e_type); | |
4861 | H_PUT_8 (output_bfd, 0, outsym->e_other); | |
4862 | H_PUT_16 (output_bfd, 0, outsym->e_desc); | |
57402f1e | 4863 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
116c20d2 NC |
4864 | input_bfd->filename, FALSE); |
4865 | if (strtab_index == (bfd_size_type) -1) | |
4866 | return FALSE; | |
4867 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
4868 | PUT_WORD (output_bfd, | |
4869 | (bfd_get_section_vma (output_bfd, | |
4870 | obj_textsec (input_bfd)->output_section) | |
4871 | + obj_textsec (input_bfd)->output_offset), | |
4872 | outsym->e_value); | |
4873 | ++obj_aout_external_sym_count (output_bfd); | |
4874 | ++outsym; | |
4875 | } | |
252b5132 | 4876 | |
116c20d2 NC |
4877 | pass = FALSE; |
4878 | skip_next = FALSE; | |
4879 | sym = obj_aout_external_syms (input_bfd); | |
4880 | sym_end = sym + sym_count; | |
4881 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
57402f1e | 4882 | symbol_map = flaginfo->symbol_map; |
116c20d2 NC |
4883 | memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map); |
4884 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) | |
252b5132 | 4885 | { |
116c20d2 NC |
4886 | const char *name; |
4887 | int type; | |
4888 | struct aout_link_hash_entry *h; | |
4889 | bfd_boolean skip; | |
4890 | asection *symsec; | |
4891 | bfd_vma val = 0; | |
4892 | bfd_boolean copy; | |
252b5132 | 4893 | |
116c20d2 | 4894 | /* We set *symbol_map to 0 above for all symbols. If it has |
07d6d2b8 AM |
4895 | already been set to -1 for this symbol, it means that we are |
4896 | discarding it because it appears in a duplicate header file. | |
4897 | See the N_BINCL code below. */ | |
116c20d2 NC |
4898 | if (*symbol_map == -1) |
4899 | continue; | |
252b5132 | 4900 | |
116c20d2 | 4901 | /* Initialize *symbol_map to -1, which means that the symbol was |
07d6d2b8 AM |
4902 | not copied into the output file. We will change it later if |
4903 | we do copy the symbol over. */ | |
116c20d2 NC |
4904 | *symbol_map = -1; |
4905 | ||
4906 | type = H_GET_8 (input_bfd, sym->e_type); | |
4907 | name = strings + GET_WORD (input_bfd, sym->e_strx); | |
4908 | ||
4909 | h = NULL; | |
4910 | ||
4911 | if (pass) | |
252b5132 | 4912 | { |
116c20d2 NC |
4913 | /* Pass this symbol through. It is the target of an |
4914 | indirect or warning symbol. */ | |
4915 | val = GET_WORD (input_bfd, sym->e_value); | |
4916 | pass = FALSE; | |
252b5132 | 4917 | } |
116c20d2 | 4918 | else if (skip_next) |
252b5132 | 4919 | { |
116c20d2 NC |
4920 | /* Skip this symbol, which is the target of an indirect |
4921 | symbol that we have changed to no longer be an indirect | |
4922 | symbol. */ | |
4923 | skip_next = FALSE; | |
4924 | continue; | |
252b5132 | 4925 | } |
116c20d2 NC |
4926 | else |
4927 | { | |
4928 | struct aout_link_hash_entry *hresolve; | |
252b5132 | 4929 | |
116c20d2 NC |
4930 | /* We have saved the hash table entry for this symbol, if |
4931 | there is one. Note that we could just look it up again | |
4932 | in the hash table, provided we first check that it is an | |
4933 | external symbol. */ | |
4934 | h = *sym_hash; | |
252b5132 | 4935 | |
116c20d2 | 4936 | /* Use the name from the hash table, in case the symbol was |
07d6d2b8 | 4937 | wrapped. */ |
116c20d2 NC |
4938 | if (h != NULL |
4939 | && h->root.type != bfd_link_hash_warning) | |
4940 | name = h->root.root.string; | |
252b5132 | 4941 | |
116c20d2 NC |
4942 | /* If this is an indirect or warning symbol, then change |
4943 | hresolve to the base symbol. We also change *sym_hash so | |
4944 | that the relocation routines relocate against the real | |
4945 | symbol. */ | |
4946 | hresolve = h; | |
4947 | if (h != (struct aout_link_hash_entry *) NULL | |
4948 | && (h->root.type == bfd_link_hash_indirect | |
4949 | || h->root.type == bfd_link_hash_warning)) | |
252b5132 | 4950 | { |
116c20d2 NC |
4951 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; |
4952 | while (hresolve->root.type == bfd_link_hash_indirect | |
4953 | || hresolve->root.type == bfd_link_hash_warning) | |
4954 | hresolve = ((struct aout_link_hash_entry *) | |
4955 | hresolve->root.u.i.link); | |
4956 | *sym_hash = hresolve; | |
4957 | } | |
4958 | ||
4959 | /* If the symbol has already been written out, skip it. */ | |
4960 | if (h != NULL | |
4961 | && h->written) | |
4962 | { | |
4963 | if ((type & N_TYPE) == N_INDR | |
4964 | || type == N_WARNING) | |
4965 | skip_next = TRUE; | |
4966 | *symbol_map = h->indx; | |
4967 | continue; | |
4968 | } | |
4969 | ||
4970 | /* See if we are stripping this symbol. */ | |
4971 | skip = FALSE; | |
4972 | switch (strip) | |
4973 | { | |
4974 | case strip_none: | |
4975 | break; | |
4976 | case strip_debugger: | |
4977 | if ((type & N_STAB) != 0) | |
4978 | skip = TRUE; | |
4979 | break; | |
4980 | case strip_some: | |
57402f1e | 4981 | if (bfd_hash_lookup (flaginfo->info->keep_hash, name, FALSE, FALSE) |
116c20d2 NC |
4982 | == NULL) |
4983 | skip = TRUE; | |
4984 | break; | |
4985 | case strip_all: | |
4986 | skip = TRUE; | |
4987 | break; | |
4988 | } | |
4989 | if (skip) | |
4990 | { | |
4991 | if (h != NULL) | |
4992 | h->written = TRUE; | |
4993 | continue; | |
4994 | } | |
4995 | ||
4996 | /* Get the value of the symbol. */ | |
4997 | if ((type & N_TYPE) == N_TEXT | |
4998 | || type == N_WEAKT) | |
4999 | symsec = obj_textsec (input_bfd); | |
5000 | else if ((type & N_TYPE) == N_DATA | |
5001 | || type == N_WEAKD) | |
5002 | symsec = obj_datasec (input_bfd); | |
5003 | else if ((type & N_TYPE) == N_BSS | |
5004 | || type == N_WEAKB) | |
5005 | symsec = obj_bsssec (input_bfd); | |
5006 | else if ((type & N_TYPE) == N_ABS | |
5007 | || type == N_WEAKA) | |
5008 | symsec = bfd_abs_section_ptr; | |
5009 | else if (((type & N_TYPE) == N_INDR | |
5010 | && (hresolve == NULL | |
5011 | || (hresolve->root.type != bfd_link_hash_defined | |
5012 | && hresolve->root.type != bfd_link_hash_defweak | |
5013 | && hresolve->root.type != bfd_link_hash_common))) | |
5014 | || type == N_WARNING) | |
5015 | { | |
5016 | /* Pass the next symbol through unchanged. The | |
5017 | condition above for indirect symbols is so that if | |
5018 | the indirect symbol was defined, we output it with | |
5019 | the correct definition so the debugger will | |
5020 | understand it. */ | |
5021 | pass = TRUE; | |
5022 | val = GET_WORD (input_bfd, sym->e_value); | |
5023 | symsec = NULL; | |
5024 | } | |
5025 | else if ((type & N_STAB) != 0) | |
5026 | { | |
5027 | val = GET_WORD (input_bfd, sym->e_value); | |
5028 | symsec = NULL; | |
5029 | } | |
5030 | else | |
5031 | { | |
5032 | /* If we get here with an indirect symbol, it means that | |
5033 | we are outputting it with a real definition. In such | |
5034 | a case we do not want to output the next symbol, | |
5035 | which is the target of the indirection. */ | |
5036 | if ((type & N_TYPE) == N_INDR) | |
5037 | skip_next = TRUE; | |
5038 | ||
5039 | symsec = NULL; | |
5040 | ||
5041 | /* We need to get the value from the hash table. We use | |
5042 | hresolve so that if we have defined an indirect | |
5043 | symbol we output the final definition. */ | |
5044 | if (h == NULL) | |
5045 | { | |
5046 | switch (type & N_TYPE) | |
5047 | { | |
5048 | case N_SETT: | |
5049 | symsec = obj_textsec (input_bfd); | |
5050 | break; | |
5051 | case N_SETD: | |
5052 | symsec = obj_datasec (input_bfd); | |
5053 | break; | |
5054 | case N_SETB: | |
5055 | symsec = obj_bsssec (input_bfd); | |
5056 | break; | |
5057 | case N_SETA: | |
5058 | symsec = bfd_abs_section_ptr; | |
5059 | break; | |
5060 | default: | |
5061 | val = 0; | |
5062 | break; | |
5063 | } | |
5064 | } | |
5065 | else if (hresolve->root.type == bfd_link_hash_defined | |
5066 | || hresolve->root.type == bfd_link_hash_defweak) | |
252b5132 | 5067 | { |
116c20d2 | 5068 | asection *input_section; |
252b5132 RH |
5069 | asection *output_section; |
5070 | ||
116c20d2 NC |
5071 | /* This case usually means a common symbol which was |
5072 | turned into a defined symbol. */ | |
5073 | input_section = hresolve->root.u.def.section; | |
5074 | output_section = input_section->output_section; | |
5075 | BFD_ASSERT (bfd_is_abs_section (output_section) | |
5076 | || output_section->owner == output_bfd); | |
5077 | val = (hresolve->root.u.def.value | |
5078 | + bfd_get_section_vma (output_bfd, output_section) | |
5079 | + input_section->output_offset); | |
5080 | ||
5081 | /* Get the correct type based on the section. If | |
5082 | this is a constructed set, force it to be | |
5083 | globally visible. */ | |
5084 | if (type == N_SETT | |
5085 | || type == N_SETD | |
5086 | || type == N_SETB | |
5087 | || type == N_SETA) | |
5088 | type |= N_EXT; | |
5089 | ||
5090 | type &=~ N_TYPE; | |
252b5132 | 5091 | |
252b5132 | 5092 | if (output_section == obj_textsec (output_bfd)) |
116c20d2 NC |
5093 | type |= (hresolve->root.type == bfd_link_hash_defined |
5094 | ? N_TEXT | |
5095 | : N_WEAKT); | |
252b5132 | 5096 | else if (output_section == obj_datasec (output_bfd)) |
116c20d2 NC |
5097 | type |= (hresolve->root.type == bfd_link_hash_defined |
5098 | ? N_DATA | |
5099 | : N_WEAKD); | |
252b5132 | 5100 | else if (output_section == obj_bsssec (output_bfd)) |
116c20d2 NC |
5101 | type |= (hresolve->root.type == bfd_link_hash_defined |
5102 | ? N_BSS | |
5103 | : N_WEAKB); | |
252b5132 | 5104 | else |
116c20d2 NC |
5105 | type |= (hresolve->root.type == bfd_link_hash_defined |
5106 | ? N_ABS | |
5107 | : N_WEAKA); | |
5108 | } | |
5109 | else if (hresolve->root.type == bfd_link_hash_common) | |
5110 | val = hresolve->root.u.c.size; | |
5111 | else if (hresolve->root.type == bfd_link_hash_undefweak) | |
5112 | { | |
5113 | val = 0; | |
5114 | type = N_WEAKU; | |
252b5132 RH |
5115 | } |
5116 | else | |
116c20d2 NC |
5117 | val = 0; |
5118 | } | |
5119 | if (symsec != NULL) | |
5120 | val = (symsec->output_section->vma | |
5121 | + symsec->output_offset | |
5122 | + (GET_WORD (input_bfd, sym->e_value) | |
5123 | - symsec->vma)); | |
5124 | ||
5125 | /* If this is a global symbol set the written flag, and if | |
5126 | it is a local symbol see if we should discard it. */ | |
5127 | if (h != NULL) | |
5128 | { | |
5129 | h->written = TRUE; | |
5130 | h->indx = obj_aout_external_sym_count (output_bfd); | |
5131 | } | |
5132 | else if ((type & N_TYPE) != N_SETT | |
5133 | && (type & N_TYPE) != N_SETD | |
5134 | && (type & N_TYPE) != N_SETB | |
5135 | && (type & N_TYPE) != N_SETA) | |
5136 | { | |
5137 | switch (discard) | |
252b5132 | 5138 | { |
116c20d2 NC |
5139 | case discard_none: |
5140 | case discard_sec_merge: | |
5141 | break; | |
5142 | case discard_l: | |
5143 | if ((type & N_STAB) == 0 | |
5144 | && bfd_is_local_label_name (input_bfd, name)) | |
5145 | skip = TRUE; | |
5146 | break; | |
5147 | case discard_all: | |
5148 | skip = TRUE; | |
5149 | break; | |
5150 | } | |
5151 | if (skip) | |
5152 | { | |
5153 | pass = FALSE; | |
5154 | continue; | |
5155 | } | |
5156 | } | |
252b5132 | 5157 | |
116c20d2 NC |
5158 | /* An N_BINCL symbol indicates the start of the stabs |
5159 | entries for a header file. We need to scan ahead to the | |
5160 | next N_EINCL symbol, ignoring nesting, adding up all the | |
5161 | characters in the symbol names, not including the file | |
5162 | numbers in types (the first number after an open | |
5163 | parenthesis). */ | |
5164 | if (type == (int) N_BINCL) | |
5165 | { | |
5166 | struct external_nlist *incl_sym; | |
5167 | int nest; | |
5168 | struct aout_link_includes_entry *incl_entry; | |
5169 | struct aout_link_includes_totals *t; | |
5170 | ||
5171 | val = 0; | |
5172 | nest = 0; | |
5173 | for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) | |
5174 | { | |
5175 | int incl_type; | |
5176 | ||
5177 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); | |
5178 | if (incl_type == (int) N_EINCL) | |
252b5132 | 5179 | { |
116c20d2 NC |
5180 | if (nest == 0) |
5181 | break; | |
5182 | --nest; | |
5183 | } | |
5184 | else if (incl_type == (int) N_BINCL) | |
5185 | ++nest; | |
5186 | else if (nest == 0) | |
5187 | { | |
5188 | const char *s; | |
5189 | ||
5190 | s = strings + GET_WORD (input_bfd, incl_sym->e_strx); | |
5191 | for (; *s != '\0'; s++) | |
252b5132 | 5192 | { |
116c20d2 NC |
5193 | val += *s; |
5194 | if (*s == '(') | |
252b5132 | 5195 | { |
116c20d2 NC |
5196 | /* Skip the file number. */ |
5197 | ++s; | |
5198 | while (ISDIGIT (*s)) | |
5199 | ++s; | |
5200 | --s; | |
252b5132 | 5201 | } |
252b5132 | 5202 | } |
116c20d2 NC |
5203 | } |
5204 | } | |
252b5132 | 5205 | |
116c20d2 | 5206 | /* If we have already included a header file with the |
07d6d2b8 AM |
5207 | same value, then replace this one with an N_EXCL |
5208 | symbol. */ | |
57402f1e NC |
5209 | copy = (bfd_boolean) (! flaginfo->info->keep_memory); |
5210 | incl_entry = aout_link_includes_lookup (&flaginfo->includes, | |
116c20d2 NC |
5211 | name, TRUE, copy); |
5212 | if (incl_entry == NULL) | |
5213 | return FALSE; | |
5214 | for (t = incl_entry->totals; t != NULL; t = t->next) | |
5215 | if (t->total == val) | |
5216 | break; | |
5217 | if (t == NULL) | |
5218 | { | |
5219 | /* This is the first time we have seen this header | |
07d6d2b8 | 5220 | file with this set of stabs strings. */ |
a50b1753 | 5221 | t = (struct aout_link_includes_totals *) |
07d6d2b8 | 5222 | bfd_hash_allocate (&flaginfo->includes.root, |
116c20d2 NC |
5223 | sizeof *t); |
5224 | if (t == NULL) | |
5225 | return FALSE; | |
5226 | t->total = val; | |
5227 | t->next = incl_entry->totals; | |
5228 | incl_entry->totals = t; | |
5229 | } | |
5230 | else | |
5231 | { | |
5232 | int *incl_map; | |
5233 | ||
5234 | /* This is a duplicate header file. We must change | |
07d6d2b8 AM |
5235 | it to be an N_EXCL entry, and mark all the |
5236 | included symbols to prevent outputting them. */ | |
116c20d2 NC |
5237 | type = (int) N_EXCL; |
5238 | ||
5239 | nest = 0; | |
5240 | for (incl_sym = sym + 1, incl_map = symbol_map + 1; | |
5241 | incl_sym < sym_end; | |
5242 | incl_sym++, incl_map++) | |
5243 | { | |
5244 | int incl_type; | |
5245 | ||
5246 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); | |
5247 | if (incl_type == (int) N_EINCL) | |
5248 | { | |
5249 | if (nest == 0) | |
5250 | { | |
5251 | *incl_map = -1; | |
5252 | break; | |
5253 | } | |
5254 | --nest; | |
252b5132 | 5255 | } |
116c20d2 NC |
5256 | else if (incl_type == (int) N_BINCL) |
5257 | ++nest; | |
5258 | else if (nest == 0) | |
5259 | *incl_map = -1; | |
252b5132 | 5260 | } |
252b5132 RH |
5261 | } |
5262 | } | |
116c20d2 NC |
5263 | } |
5264 | ||
5265 | /* Copy this symbol into the list of symbols we are going to | |
5266 | write out. */ | |
5267 | H_PUT_8 (output_bfd, type, outsym->e_type); | |
5268 | H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other); | |
5269 | H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc); | |
5270 | copy = FALSE; | |
57402f1e | 5271 | if (! flaginfo->info->keep_memory) |
116c20d2 NC |
5272 | { |
5273 | /* name points into a string table which we are going to | |
5274 | free. If there is a hash table entry, use that string. | |
5275 | Otherwise, copy name into memory. */ | |
5276 | if (h != NULL) | |
5277 | name = h->root.root.string; | |
252b5132 | 5278 | else |
116c20d2 NC |
5279 | copy = TRUE; |
5280 | } | |
57402f1e | 5281 | strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab, |
116c20d2 NC |
5282 | name, copy); |
5283 | if (strtab_index == (bfd_size_type) -1) | |
5284 | return FALSE; | |
5285 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); | |
5286 | PUT_WORD (output_bfd, val, outsym->e_value); | |
5287 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
5288 | ++obj_aout_external_sym_count (output_bfd); | |
5289 | ++outsym; | |
5290 | } | |
252b5132 | 5291 | |
116c20d2 | 5292 | /* Write out the output symbols we have just constructed. */ |
57402f1e | 5293 | if (outsym > flaginfo->output_syms) |
116c20d2 NC |
5294 | { |
5295 | bfd_size_type outsym_size; | |
252b5132 | 5296 | |
57402f1e | 5297 | if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0) |
116c20d2 | 5298 | return FALSE; |
57402f1e | 5299 | outsym_size = outsym - flaginfo->output_syms; |
116c20d2 | 5300 | outsym_size *= EXTERNAL_NLIST_SIZE; |
57402f1e | 5301 | if (bfd_bwrite ((void *) flaginfo->output_syms, outsym_size, output_bfd) |
116c20d2 NC |
5302 | != outsym_size) |
5303 | return FALSE; | |
57402f1e | 5304 | flaginfo->symoff += outsym_size; |
116c20d2 | 5305 | } |
252b5132 | 5306 | |
116c20d2 NC |
5307 | return TRUE; |
5308 | } | |
252b5132 | 5309 | |
116c20d2 | 5310 | /* Link an a.out input BFD into the output file. */ |
252b5132 | 5311 | |
116c20d2 | 5312 | static bfd_boolean |
57402f1e | 5313 | aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd) |
116c20d2 | 5314 | { |
116c20d2 | 5315 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); |
252b5132 | 5316 | |
116c20d2 NC |
5317 | /* If this is a dynamic object, it may need special handling. */ |
5318 | if ((input_bfd->flags & DYNAMIC) != 0 | |
5319 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
5320 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
57402f1e | 5321 | (flaginfo->info, input_bfd)); |
252b5132 | 5322 | |
116c20d2 | 5323 | /* Get the symbols. We probably have them already, unless |
57402f1e | 5324 | flaginfo->info->keep_memory is FALSE. */ |
116c20d2 NC |
5325 | if (! aout_get_external_symbols (input_bfd)) |
5326 | return FALSE; | |
252b5132 | 5327 | |
116c20d2 | 5328 | /* Write out the symbols and get a map of the new indices. The map |
57402f1e NC |
5329 | is placed into flaginfo->symbol_map. */ |
5330 | if (! aout_link_write_symbols (flaginfo, input_bfd)) | |
116c20d2 | 5331 | return FALSE; |
252b5132 | 5332 | |
116c20d2 NC |
5333 | /* Relocate and write out the sections. These functions use the |
5334 | symbol map created by aout_link_write_symbols. The linker_mark | |
5335 | field will be set if these sections are to be included in the | |
5336 | link, which will normally be the case. */ | |
5337 | if (obj_textsec (input_bfd)->linker_mark) | |
5338 | { | |
57402f1e | 5339 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 5340 | obj_textsec (input_bfd), |
57402f1e | 5341 | &flaginfo->treloff, |
116c20d2 NC |
5342 | exec_hdr (input_bfd)->a_trsize)) |
5343 | return FALSE; | |
5344 | } | |
5345 | if (obj_datasec (input_bfd)->linker_mark) | |
5346 | { | |
57402f1e | 5347 | if (! aout_link_input_section (flaginfo, input_bfd, |
116c20d2 | 5348 | obj_datasec (input_bfd), |
57402f1e | 5349 | &flaginfo->dreloff, |
116c20d2 NC |
5350 | exec_hdr (input_bfd)->a_drsize)) |
5351 | return FALSE; | |
5352 | } | |
5353 | ||
5354 | /* If we are not keeping memory, we don't need the symbols any | |
5355 | longer. We still need them if we are keeping memory, because the | |
5356 | strings in the hash table point into them. */ | |
57402f1e | 5357 | if (! flaginfo->info->keep_memory) |
116c20d2 NC |
5358 | { |
5359 | if (! aout_link_free_symbols (input_bfd)) | |
5360 | return FALSE; | |
5361 | } | |
5362 | ||
5363 | return TRUE; | |
5364 | } | |
5365 | ||
5366 | /* Do the final link step. This is called on the output BFD. The | |
5367 | INFO structure should point to a list of BFDs linked through the | |
c72f2fb2 | 5368 | link.next field which can be used to find each BFD which takes part |
116c20d2 NC |
5369 | in the output. Also, each section in ABFD should point to a list |
5370 | of bfd_link_order structures which list all the input sections for | |
5371 | the output section. */ | |
5372 | ||
5373 | bfd_boolean | |
5374 | NAME (aout, final_link) (bfd *abfd, | |
5375 | struct bfd_link_info *info, | |
5376 | void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *)) | |
5377 | { | |
5378 | struct aout_final_link_info aout_info; | |
5379 | bfd_boolean includes_hash_initialized = FALSE; | |
5380 | bfd *sub; | |
5381 | bfd_size_type trsize, drsize; | |
5382 | bfd_size_type max_contents_size; | |
5383 | bfd_size_type max_relocs_size; | |
5384 | bfd_size_type max_sym_count; | |
116c20d2 NC |
5385 | struct bfd_link_order *p; |
5386 | asection *o; | |
5387 | bfd_boolean have_link_order_relocs; | |
5388 | ||
0e1862bb | 5389 | if (bfd_link_pic (info)) |
116c20d2 NC |
5390 | abfd->flags |= DYNAMIC; |
5391 | ||
5392 | aout_info.info = info; | |
5393 | aout_info.output_bfd = abfd; | |
5394 | aout_info.contents = NULL; | |
5395 | aout_info.relocs = NULL; | |
5396 | aout_info.symbol_map = NULL; | |
5397 | aout_info.output_syms = NULL; | |
252b5132 | 5398 | |
66eb6687 AM |
5399 | if (!bfd_hash_table_init_n (&aout_info.includes.root, |
5400 | aout_link_includes_newfunc, | |
5401 | sizeof (struct aout_link_includes_entry), | |
5402 | 251)) | |
116c20d2 NC |
5403 | goto error_return; |
5404 | includes_hash_initialized = TRUE; | |
252b5132 | 5405 | |
116c20d2 NC |
5406 | /* Figure out the largest section size. Also, if generating |
5407 | relocatable output, count the relocs. */ | |
5408 | trsize = 0; | |
5409 | drsize = 0; | |
5410 | max_contents_size = 0; | |
5411 | max_relocs_size = 0; | |
5412 | max_sym_count = 0; | |
c72f2fb2 | 5413 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 NC |
5414 | { |
5415 | bfd_size_type sz; | |
252b5132 | 5416 | |
0e1862bb | 5417 | if (bfd_link_relocatable (info)) |
116c20d2 NC |
5418 | { |
5419 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) | |
252b5132 | 5420 | { |
116c20d2 NC |
5421 | trsize += exec_hdr (sub)->a_trsize; |
5422 | drsize += exec_hdr (sub)->a_drsize; | |
252b5132 | 5423 | } |
252b5132 RH |
5424 | else |
5425 | { | |
116c20d2 NC |
5426 | /* FIXME: We need to identify the .text and .data sections |
5427 | and call get_reloc_upper_bound and canonicalize_reloc to | |
5428 | work out the number of relocs needed, and then multiply | |
5429 | by the reloc size. */ | |
4eca0228 | 5430 | _bfd_error_handler |
695344c0 | 5431 | /* xgettext:c-format */ |
871b3ab2 | 5432 | (_("%pB: relocatable link from %s to %s not supported"), |
dae82561 | 5433 | abfd, sub->xvec->name, abfd->xvec->name); |
116c20d2 NC |
5434 | bfd_set_error (bfd_error_invalid_operation); |
5435 | goto error_return; | |
252b5132 | 5436 | } |
116c20d2 | 5437 | } |
252b5132 | 5438 | |
116c20d2 NC |
5439 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
5440 | { | |
5441 | sz = obj_textsec (sub)->size; | |
5442 | if (sz > max_contents_size) | |
5443 | max_contents_size = sz; | |
5444 | sz = obj_datasec (sub)->size; | |
5445 | if (sz > max_contents_size) | |
5446 | max_contents_size = sz; | |
252b5132 | 5447 | |
116c20d2 NC |
5448 | sz = exec_hdr (sub)->a_trsize; |
5449 | if (sz > max_relocs_size) | |
5450 | max_relocs_size = sz; | |
5451 | sz = exec_hdr (sub)->a_drsize; | |
5452 | if (sz > max_relocs_size) | |
5453 | max_relocs_size = sz; | |
252b5132 | 5454 | |
116c20d2 NC |
5455 | sz = obj_aout_external_sym_count (sub); |
5456 | if (sz > max_sym_count) | |
5457 | max_sym_count = sz; | |
252b5132 RH |
5458 | } |
5459 | } | |
5460 | ||
0e1862bb | 5461 | if (bfd_link_relocatable (info)) |
116c20d2 NC |
5462 | { |
5463 | if (obj_textsec (abfd) != NULL) | |
5464 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
8423293d | 5465 | ->map_head.link_order) |
116c20d2 NC |
5466 | * obj_reloc_entry_size (abfd)); |
5467 | if (obj_datasec (abfd) != NULL) | |
5468 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
8423293d | 5469 | ->map_head.link_order) |
116c20d2 NC |
5470 | * obj_reloc_entry_size (abfd)); |
5471 | } | |
252b5132 | 5472 | |
116c20d2 NC |
5473 | exec_hdr (abfd)->a_trsize = trsize; |
5474 | exec_hdr (abfd)->a_drsize = drsize; | |
252b5132 | 5475 | |
116c20d2 | 5476 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); |
252b5132 | 5477 | |
116c20d2 NC |
5478 | /* Adjust the section sizes and vmas according to the magic number. |
5479 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
5480 | filepos for each section. */ | |
3a8c4a5b | 5481 | if (! NAME (aout, adjust_sizes_and_vmas) (abfd)) |
116c20d2 | 5482 | goto error_return; |
252b5132 | 5483 | |
116c20d2 NC |
5484 | /* The relocation and symbol file positions differ among a.out |
5485 | targets. We are passed a callback routine from the backend | |
5486 | specific code to handle this. | |
5487 | FIXME: At this point we do not know how much space the symbol | |
5488 | table will require. This will not work for any (nonstandard) | |
5489 | a.out target that needs to know the symbol table size before it | |
dc12032b | 5490 | can compute the relocation file positions. */ |
116c20d2 NC |
5491 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, |
5492 | &aout_info.symoff); | |
5493 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
5494 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
5495 | obj_sym_filepos (abfd) = aout_info.symoff; | |
252b5132 | 5496 | |
116c20d2 NC |
5497 | /* We keep a count of the symbols as we output them. */ |
5498 | obj_aout_external_sym_count (abfd) = 0; | |
5499 | ||
5500 | /* We accumulate the string table as we write out the symbols. */ | |
5501 | aout_info.strtab = _bfd_stringtab_init (); | |
5502 | if (aout_info.strtab == NULL) | |
5503 | goto error_return; | |
5504 | ||
5505 | /* Allocate buffers to hold section contents and relocs. */ | |
a50b1753 | 5506 | aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size); |
116c20d2 | 5507 | aout_info.relocs = bfd_malloc (max_relocs_size); |
c38eb2a6 | 5508 | aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int)); |
a50b1753 NC |
5509 | aout_info.output_syms = (struct external_nlist *) |
5510 | bfd_malloc ((max_sym_count + 1) * sizeof (struct external_nlist)); | |
116c20d2 NC |
5511 | if ((aout_info.contents == NULL && max_contents_size != 0) |
5512 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
5513 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
5514 | || aout_info.output_syms == NULL) | |
5515 | goto error_return; | |
5516 | ||
5517 | /* If we have a symbol named __DYNAMIC, force it out now. This is | |
5518 | required by SunOS. Doing this here rather than in sunos.c is a | |
5519 | hack, but it's easier than exporting everything which would be | |
5520 | needed. */ | |
5521 | { | |
5522 | struct aout_link_hash_entry *h; | |
5523 | ||
5524 | h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", | |
5525 | FALSE, FALSE, FALSE); | |
5526 | if (h != NULL) | |
7686d77d | 5527 | aout_link_write_other_symbol (&h->root.root, &aout_info); |
116c20d2 NC |
5528 | } |
5529 | ||
5530 | /* The most time efficient way to do the link would be to read all | |
5531 | the input object files into memory and then sort out the | |
5532 | information into the output file. Unfortunately, that will | |
5533 | probably use too much memory. Another method would be to step | |
5534 | through everything that composes the text section and write it | |
5535 | out, and then everything that composes the data section and write | |
5536 | it out, and then write out the relocs, and then write out the | |
5537 | symbols. Unfortunately, that requires reading stuff from each | |
5538 | input file several times, and we will not be able to keep all the | |
5539 | input files open simultaneously, and reopening them will be slow. | |
5540 | ||
5541 | What we do is basically process one input file at a time. We do | |
5542 | everything we need to do with an input file once--copy over the | |
5543 | section contents, handle the relocation information, and write | |
5544 | out the symbols--and then we throw away the information we read | |
5545 | from it. This approach requires a lot of lseeks of the output | |
5546 | file, which is unfortunate but still faster than reopening a lot | |
5547 | of files. | |
5548 | ||
5549 | We use the output_has_begun field of the input BFDs to see | |
5550 | whether we have already handled it. */ | |
c72f2fb2 | 5551 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
116c20d2 | 5552 | sub->output_has_begun = FALSE; |
252b5132 | 5553 | |
116c20d2 NC |
5554 | /* Mark all sections which are to be included in the link. This |
5555 | will normally be every section. We need to do this so that we | |
5556 | can identify any sections which the linker has decided to not | |
5557 | include. */ | |
5558 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5559 | { |
8423293d | 5560 | for (p = o->map_head.link_order; p != NULL; p = p->next) |
116c20d2 NC |
5561 | if (p->type == bfd_indirect_link_order) |
5562 | p->u.indirect.section->linker_mark = TRUE; | |
252b5132 RH |
5563 | } |
5564 | ||
116c20d2 NC |
5565 | have_link_order_relocs = FALSE; |
5566 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5567 | { |
8423293d | 5568 | for (p = o->map_head.link_order; |
116c20d2 NC |
5569 | p != NULL; |
5570 | p = p->next) | |
252b5132 | 5571 | { |
116c20d2 NC |
5572 | if (p->type == bfd_indirect_link_order |
5573 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
5574 | == bfd_target_aout_flavour)) | |
252b5132 | 5575 | { |
116c20d2 NC |
5576 | bfd *input_bfd; |
5577 | ||
5578 | input_bfd = p->u.indirect.section->owner; | |
5579 | if (! input_bfd->output_has_begun) | |
252b5132 | 5580 | { |
116c20d2 NC |
5581 | if (! aout_link_input_bfd (&aout_info, input_bfd)) |
5582 | goto error_return; | |
5583 | input_bfd->output_has_begun = TRUE; | |
252b5132 | 5584 | } |
252b5132 | 5585 | } |
116c20d2 NC |
5586 | else if (p->type == bfd_section_reloc_link_order |
5587 | || p->type == bfd_symbol_reloc_link_order) | |
5588 | { | |
5589 | /* These are handled below. */ | |
5590 | have_link_order_relocs = TRUE; | |
5591 | } | |
5592 | else | |
5593 | { | |
5594 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
5595 | goto error_return; | |
5596 | } | |
252b5132 RH |
5597 | } |
5598 | } | |
252b5132 | 5599 | |
116c20d2 | 5600 | /* Write out any symbols that we have not already written out. */ |
7686d77d AM |
5601 | bfd_hash_traverse (&info->hash->table, |
5602 | aout_link_write_other_symbol, | |
5603 | &aout_info); | |
116c20d2 NC |
5604 | |
5605 | /* Now handle any relocs we were asked to create by the linker. | |
5606 | These did not come from any input file. We must do these after | |
5607 | we have written out all the symbols, so that we know the symbol | |
5608 | indices to use. */ | |
5609 | if (have_link_order_relocs) | |
5610 | { | |
5611 | for (o = abfd->sections; o != NULL; o = o->next) | |
252b5132 | 5612 | { |
8423293d | 5613 | for (p = o->map_head.link_order; |
116c20d2 NC |
5614 | p != NULL; |
5615 | p = p->next) | |
5616 | { | |
5617 | if (p->type == bfd_section_reloc_link_order | |
5618 | || p->type == bfd_symbol_reloc_link_order) | |
5619 | { | |
5620 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
5621 | goto error_return; | |
5622 | } | |
5623 | } | |
252b5132 | 5624 | } |
116c20d2 | 5625 | } |
252b5132 | 5626 | |
116c20d2 NC |
5627 | if (aout_info.contents != NULL) |
5628 | { | |
5629 | free (aout_info.contents); | |
5630 | aout_info.contents = NULL; | |
5631 | } | |
5632 | if (aout_info.relocs != NULL) | |
5633 | { | |
5634 | free (aout_info.relocs); | |
5635 | aout_info.relocs = NULL; | |
5636 | } | |
5637 | if (aout_info.symbol_map != NULL) | |
5638 | { | |
5639 | free (aout_info.symbol_map); | |
5640 | aout_info.symbol_map = NULL; | |
5641 | } | |
5642 | if (aout_info.output_syms != NULL) | |
5643 | { | |
5644 | free (aout_info.output_syms); | |
5645 | aout_info.output_syms = NULL; | |
5646 | } | |
5647 | if (includes_hash_initialized) | |
5648 | { | |
5649 | bfd_hash_table_free (&aout_info.includes.root); | |
5650 | includes_hash_initialized = FALSE; | |
5651 | } | |
252b5132 | 5652 | |
116c20d2 NC |
5653 | /* Finish up any dynamic linking we may be doing. */ |
5654 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
5655 | { | |
5656 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
5657 | goto error_return; | |
252b5132 RH |
5658 | } |
5659 | ||
116c20d2 NC |
5660 | /* Update the header information. */ |
5661 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
5662 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
5663 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
5664 | obj_textsec (abfd)->reloc_count = | |
5665 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
5666 | obj_datasec (abfd)->reloc_count = | |
5667 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
252b5132 | 5668 | |
116c20d2 | 5669 | /* Write out the string table, unless there are no symbols. */ |
f6e688f7 AM |
5670 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0) |
5671 | goto error_return; | |
116c20d2 NC |
5672 | if (abfd->symcount > 0) |
5673 | { | |
f6e688f7 | 5674 | if (!emit_stringtab (abfd, aout_info.strtab)) |
116c20d2 NC |
5675 | goto error_return; |
5676 | } | |
f6e688f7 | 5677 | else |
116c20d2 | 5678 | { |
f6e688f7 | 5679 | bfd_byte b[BYTES_IN_WORD]; |
252b5132 | 5680 | |
f6e688f7 AM |
5681 | memset (b, 0, BYTES_IN_WORD); |
5682 | if (bfd_bwrite (b, (bfd_size_type) BYTES_IN_WORD, abfd) != BYTES_IN_WORD) | |
116c20d2 NC |
5683 | goto error_return; |
5684 | } | |
252b5132 | 5685 | |
b34976b6 | 5686 | return TRUE; |
116c20d2 NC |
5687 | |
5688 | error_return: | |
5689 | if (aout_info.contents != NULL) | |
5690 | free (aout_info.contents); | |
5691 | if (aout_info.relocs != NULL) | |
5692 | free (aout_info.relocs); | |
5693 | if (aout_info.symbol_map != NULL) | |
5694 | free (aout_info.symbol_map); | |
5695 | if (aout_info.output_syms != NULL) | |
5696 | free (aout_info.output_syms); | |
5697 | if (includes_hash_initialized) | |
5698 | bfd_hash_table_free (&aout_info.includes.root); | |
5699 | return FALSE; | |
252b5132 | 5700 | } |