Commit | Line | Data |
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252b5132 | 1 | /* BFD semi-generic back-end for a.out binaries. |
7898deda | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, |
eea6121a | 3 | 2001, 2002, 2003, 2004 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | Written by Cygnus Support. | |
6 | ||
f7c33884 | 7 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 8 | |
f7c33884 NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
252b5132 | 13 | |
f7c33884 NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
252b5132 | 18 | |
f7c33884 NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
252b5132 RH |
22 | |
23 | /* | |
24 | SECTION | |
25 | a.out backends | |
26 | ||
252b5132 RH |
27 | DESCRIPTION |
28 | ||
29 | BFD supports a number of different flavours of a.out format, | |
30 | though the major differences are only the sizes of the | |
31 | structures on disk, and the shape of the relocation | |
32 | information. | |
33 | ||
34 | The support is split into a basic support file @file{aoutx.h} | |
35 | and other files which derive functions from the base. One | |
36 | derivation file is @file{aoutf1.h} (for a.out flavour 1), and | |
37 | adds to the basic a.out functions support for sun3, sun4, 386 | |
38 | and 29k a.out files, to create a target jump vector for a | |
39 | specific target. | |
40 | ||
41 | This information is further split out into more specific files | |
42 | for each machine, including @file{sunos.c} for sun3 and sun4, | |
43 | @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a | |
44 | demonstration of a 64 bit a.out format. | |
45 | ||
46 | The base file @file{aoutx.h} defines general mechanisms for | |
47 | reading and writing records to and from disk and various | |
48 | other methods which BFD requires. It is included by | |
49 | @file{aout32.c} and @file{aout64.c} to form the names | |
50 | <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc. | |
51 | ||
52 | As an example, this is what goes on to make the back end for a | |
53 | sun4, from @file{aout32.c}: | |
54 | ||
55 | | #define ARCH_SIZE 32 | |
56 | | #include "aoutx.h" | |
57 | ||
58 | Which exports names: | |
59 | ||
60 | | ... | |
61 | | aout_32_canonicalize_reloc | |
62 | | aout_32_find_nearest_line | |
63 | | aout_32_get_lineno | |
64 | | aout_32_get_reloc_upper_bound | |
65 | | ... | |
66 | ||
67 | from @file{sunos.c}: | |
68 | ||
69 | | #define TARGET_NAME "a.out-sunos-big" | |
70 | | #define VECNAME sunos_big_vec | |
71 | | #include "aoutf1.h" | |
72 | ||
73 | requires all the names from @file{aout32.c}, and produces the jump vector | |
74 | ||
75 | | sunos_big_vec | |
76 | ||
77 | The file @file{host-aout.c} is a special case. It is for a large set | |
78 | of hosts that use ``more or less standard'' a.out files, and | |
79 | for which cross-debugging is not interesting. It uses the | |
80 | standard 32-bit a.out support routines, but determines the | |
81 | file offsets and addresses of the text, data, and BSS | |
82 | sections, the machine architecture and machine type, and the | |
83 | entry point address, in a host-dependent manner. Once these | |
84 | values have been determined, generic code is used to handle | |
85 | the object file. | |
86 | ||
87 | When porting it to run on a new system, you must supply: | |
88 | ||
89 | | HOST_PAGE_SIZE | |
90 | | HOST_SEGMENT_SIZE | |
91 | | HOST_MACHINE_ARCH (optional) | |
92 | | HOST_MACHINE_MACHINE (optional) | |
93 | | HOST_TEXT_START_ADDR | |
94 | | HOST_STACK_END_ADDR | |
95 | ||
96 | in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These | |
97 | values, plus the structures and macros defined in @file{a.out.h} on | |
98 | your host system, will produce a BFD target that will access | |
99 | ordinary a.out files on your host. To configure a new machine | |
100 | to use @file{host-aout.c}, specify: | |
101 | ||
102 | | TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec | |
103 | | TDEPFILES= host-aout.o trad-core.o | |
104 | ||
105 | in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in} | |
106 | to use the | |
107 | @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your | |
5ed6aba4 | 108 | configuration is selected. */ |
252b5132 RH |
109 | |
110 | /* Some assumptions: | |
111 | * Any BFD with D_PAGED set is ZMAGIC, and vice versa. | |
112 | Doesn't matter what the setting of WP_TEXT is on output, but it'll | |
113 | get set on input. | |
114 | * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC. | |
115 | * Any BFD with both flags clear is OMAGIC. | |
116 | (Just want to make these explicit, so the conditions tested in this | |
117 | file make sense if you're more familiar with a.out than with BFD.) */ | |
118 | ||
119 | #define KEEPIT udata.i | |
120 | ||
252b5132 RH |
121 | #include "bfd.h" |
122 | #include "sysdep.h" | |
3882b010 | 123 | #include "safe-ctype.h" |
252b5132 RH |
124 | #include "bfdlink.h" |
125 | ||
126 | #include "libaout.h" | |
127 | #include "libbfd.h" | |
128 | #include "aout/aout64.h" | |
129 | #include "aout/stab_gnu.h" | |
130 | #include "aout/ar.h" | |
131 | ||
b34976b6 AM |
132 | static bfd_boolean aout_get_external_symbols |
133 | PARAMS ((bfd *)); | |
134 | static bfd_boolean translate_from_native_sym_flags | |
252b5132 | 135 | PARAMS ((bfd *, aout_symbol_type *)); |
b34976b6 | 136 | static bfd_boolean translate_to_native_sym_flags |
252b5132 | 137 | PARAMS ((bfd *, asymbol *, struct external_nlist *)); |
b34976b6 AM |
138 | static void adjust_o_magic |
139 | PARAMS ((bfd *, struct internal_exec *)); | |
140 | static void adjust_z_magic | |
141 | PARAMS ((bfd *, struct internal_exec *)); | |
142 | static void adjust_n_magic | |
143 | PARAMS ((bfd *, struct internal_exec *)); | |
923f08ff AM |
144 | reloc_howto_type * NAME(aout,reloc_type_lookup) |
145 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
252b5132 RH |
146 | |
147 | /* | |
148 | SUBSECTION | |
149 | Relocations | |
150 | ||
151 | DESCRIPTION | |
152 | The file @file{aoutx.h} provides for both the @emph{standard} | |
153 | and @emph{extended} forms of a.out relocation records. | |
154 | ||
155 | The standard records contain only an | |
156 | address, a symbol index, and a type field. The extended records | |
157 | (used on 29ks and sparcs) also have a full integer for an | |
5ed6aba4 | 158 | addend. */ |
252b5132 | 159 | |
252b5132 RH |
160 | #ifndef CTOR_TABLE_RELOC_HOWTO |
161 | #define CTOR_TABLE_RELOC_IDX 2 | |
923f08ff AM |
162 | #define CTOR_TABLE_RELOC_HOWTO(BFD) \ |
163 | ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \ | |
164 | ? howto_table_ext : howto_table_std) \ | |
165 | + CTOR_TABLE_RELOC_IDX) | |
252b5132 RH |
166 | #endif |
167 | ||
168 | #ifndef MY_swap_std_reloc_in | |
169 | #define MY_swap_std_reloc_in NAME(aout,swap_std_reloc_in) | |
170 | #endif | |
171 | ||
1642229e HPN |
172 | #ifndef MY_swap_ext_reloc_in |
173 | #define MY_swap_ext_reloc_in NAME(aout,swap_ext_reloc_in) | |
174 | #endif | |
175 | ||
252b5132 RH |
176 | #ifndef MY_swap_std_reloc_out |
177 | #define MY_swap_std_reloc_out NAME(aout,swap_std_reloc_out) | |
178 | #endif | |
179 | ||
1642229e HPN |
180 | #ifndef MY_swap_ext_reloc_out |
181 | #define MY_swap_ext_reloc_out NAME(aout,swap_ext_reloc_out) | |
182 | #endif | |
183 | ||
252b5132 RH |
184 | #ifndef MY_final_link_relocate |
185 | #define MY_final_link_relocate _bfd_final_link_relocate | |
186 | #endif | |
187 | ||
188 | #ifndef MY_relocate_contents | |
189 | #define MY_relocate_contents _bfd_relocate_contents | |
190 | #endif | |
191 | ||
192 | #define howto_table_ext NAME(aout,ext_howto_table) | |
193 | #define howto_table_std NAME(aout,std_howto_table) | |
194 | ||
195 | reloc_howto_type howto_table_ext[] = | |
196 | { | |
f7c33884 | 197 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */ |
b34976b6 AM |
198 | HOWTO(RELOC_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", FALSE, 0,0x000000ff, FALSE), |
199 | HOWTO(RELOC_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", FALSE, 0,0x0000ffff, FALSE), | |
200 | HOWTO(RELOC_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", FALSE, 0,0xffffffff, FALSE), | |
201 | HOWTO(RELOC_DISP8, 0, 0, 8, TRUE, 0, complain_overflow_signed,0,"DISP8", FALSE, 0,0x000000ff, FALSE), | |
202 | HOWTO(RELOC_DISP16, 0, 1, 16, TRUE, 0, complain_overflow_signed,0,"DISP16", FALSE, 0,0x0000ffff, FALSE), | |
203 | HOWTO(RELOC_DISP32, 0, 2, 32, TRUE, 0, complain_overflow_signed,0,"DISP32", FALSE, 0,0xffffffff, FALSE), | |
204 | HOWTO(RELOC_WDISP30,2, 2, 30, TRUE, 0, complain_overflow_signed,0,"WDISP30", FALSE, 0,0x3fffffff, FALSE), | |
205 | HOWTO(RELOC_WDISP22,2, 2, 22, TRUE, 0, complain_overflow_signed,0,"WDISP22", FALSE, 0,0x003fffff, FALSE), | |
206 | HOWTO(RELOC_HI22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield,0,"HI22", FALSE, 0,0x003fffff, FALSE), | |
207 | HOWTO(RELOC_22, 0, 2, 22, FALSE, 0, complain_overflow_bitfield,0,"22", FALSE, 0,0x003fffff, FALSE), | |
208 | HOWTO(RELOC_13, 0, 2, 13, FALSE, 0, complain_overflow_bitfield,0,"13", FALSE, 0,0x00001fff, FALSE), | |
209 | HOWTO(RELOC_LO10, 0, 2, 10, FALSE, 0, complain_overflow_dont,0,"LO10", FALSE, 0,0x000003ff, FALSE), | |
210 | HOWTO(RELOC_SFA_BASE,0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"SFA_BASE", FALSE, 0,0xffffffff, FALSE), | |
211 | HOWTO(RELOC_SFA_OFF13,0,2, 32, FALSE, 0, complain_overflow_bitfield,0,"SFA_OFF13",FALSE, 0,0xffffffff, FALSE), | |
212 | HOWTO(RELOC_BASE10, 0, 2, 10, FALSE, 0, complain_overflow_dont,0,"BASE10", FALSE, 0,0x000003ff, FALSE), | |
213 | HOWTO(RELOC_BASE13, 0, 2, 13, FALSE, 0, complain_overflow_signed,0,"BASE13", FALSE, 0,0x00001fff, FALSE), | |
214 | HOWTO(RELOC_BASE22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield,0,"BASE22", FALSE, 0,0x003fffff, FALSE), | |
215 | HOWTO(RELOC_PC10, 0, 2, 10, TRUE, 0, complain_overflow_dont,0,"PC10", FALSE, 0,0x000003ff, TRUE), | |
216 | HOWTO(RELOC_PC22, 10, 2, 22, TRUE, 0, complain_overflow_signed,0,"PC22", FALSE, 0,0x003fffff, TRUE), | |
217 | HOWTO(RELOC_JMP_TBL,2, 2, 30, TRUE, 0, complain_overflow_signed,0,"JMP_TBL", FALSE, 0,0x3fffffff, FALSE), | |
218 | HOWTO(RELOC_SEGOFF16,0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"SEGOFF16", FALSE, 0,0x00000000, FALSE), | |
219 | HOWTO(RELOC_GLOB_DAT,0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"GLOB_DAT", FALSE, 0,0x00000000, FALSE), | |
220 | HOWTO(RELOC_JMP_SLOT,0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"JMP_SLOT", FALSE, 0,0x00000000, FALSE), | |
221 | HOWTO(RELOC_RELATIVE,0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"RELATIVE", FALSE, 0,0x00000000, FALSE), | |
222 | HOWTO(0, 0, 0, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), | |
223 | HOWTO(0, 0, 0, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), | |
252b5132 | 224 | #define RELOC_SPARC_REV32 RELOC_WDISP19 |
b34976b6 | 225 | HOWTO(RELOC_SPARC_REV32, 0, 2, 32, FALSE, 0, complain_overflow_dont,0,"R_SPARC_REV32", FALSE, 0,0xffffffff, FALSE), |
252b5132 RH |
226 | }; |
227 | ||
228 | /* Convert standard reloc records to "arelent" format (incl byte swap). */ | |
229 | ||
5ed6aba4 NC |
230 | reloc_howto_type howto_table_std[] = |
231 | { | |
f7c33884 | 232 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */ |
b34976b6 AM |
233 | HOWTO ( 0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", TRUE, 0x000000ff,0x000000ff, FALSE), |
234 | HOWTO ( 1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE), | |
235 | HOWTO ( 2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", TRUE, 0xffffffff,0xffffffff, FALSE), | |
236 | HOWTO ( 3, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,0,"64", TRUE, 0xdeaddead,0xdeaddead, FALSE), | |
237 | HOWTO ( 4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,"DISP8", TRUE, 0x000000ff,0x000000ff, FALSE), | |
238 | HOWTO ( 5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, FALSE), | |
239 | HOWTO ( 6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0,"DISP32", TRUE, 0xffffffff,0xffffffff, FALSE), | |
240 | HOWTO ( 7, 0, 4, 64, TRUE, 0, complain_overflow_signed, 0,"DISP64", TRUE, 0xfeedface,0xfeedface, FALSE), | |
241 | HOWTO ( 8, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"GOT_REL", FALSE, 0,0x00000000, FALSE), | |
242 | HOWTO ( 9, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"BASE16", FALSE,0xffffffff,0xffffffff, FALSE), | |
243 | HOWTO (10, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"BASE32", FALSE,0xffffffff,0xffffffff, FALSE), | |
5f771d47 ILT |
244 | EMPTY_HOWTO (-1), |
245 | EMPTY_HOWTO (-1), | |
246 | EMPTY_HOWTO (-1), | |
247 | EMPTY_HOWTO (-1), | |
248 | EMPTY_HOWTO (-1), | |
b34976b6 | 249 | HOWTO (16, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"JMP_TABLE", FALSE, 0,0x00000000, FALSE), |
5f771d47 ILT |
250 | EMPTY_HOWTO (-1), |
251 | EMPTY_HOWTO (-1), | |
252 | EMPTY_HOWTO (-1), | |
253 | EMPTY_HOWTO (-1), | |
254 | EMPTY_HOWTO (-1), | |
255 | EMPTY_HOWTO (-1), | |
256 | EMPTY_HOWTO (-1), | |
257 | EMPTY_HOWTO (-1), | |
258 | EMPTY_HOWTO (-1), | |
259 | EMPTY_HOWTO (-1), | |
260 | EMPTY_HOWTO (-1), | |
261 | EMPTY_HOWTO (-1), | |
262 | EMPTY_HOWTO (-1), | |
263 | EMPTY_HOWTO (-1), | |
264 | EMPTY_HOWTO (-1), | |
b34976b6 | 265 | HOWTO (32, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"RELATIVE", FALSE, 0,0x00000000, FALSE), |
5f771d47 ILT |
266 | EMPTY_HOWTO (-1), |
267 | EMPTY_HOWTO (-1), | |
268 | EMPTY_HOWTO (-1), | |
269 | EMPTY_HOWTO (-1), | |
270 | EMPTY_HOWTO (-1), | |
271 | EMPTY_HOWTO (-1), | |
272 | EMPTY_HOWTO (-1), | |
b34976b6 | 273 | HOWTO (40, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"BASEREL", FALSE, 0,0x00000000, FALSE), |
252b5132 RH |
274 | }; |
275 | ||
923f08ff | 276 | #define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0])) |
252b5132 RH |
277 | |
278 | reloc_howto_type * | |
279 | NAME(aout,reloc_type_lookup) (abfd,code) | |
280 | bfd *abfd; | |
281 | bfd_reloc_code_real_type code; | |
282 | { | |
923f08ff AM |
283 | #define EXT(i, j) case i: return &howto_table_ext[j] |
284 | #define STD(i, j) case i: return &howto_table_std[j] | |
252b5132 | 285 | int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE; |
f7c33884 | 286 | |
252b5132 RH |
287 | if (code == BFD_RELOC_CTOR) |
288 | switch (bfd_get_arch_info (abfd)->bits_per_address) | |
289 | { | |
290 | case 32: | |
291 | code = BFD_RELOC_32; | |
292 | break; | |
293 | case 64: | |
294 | code = BFD_RELOC_64; | |
295 | break; | |
296 | } | |
f7c33884 | 297 | |
252b5132 RH |
298 | if (ext) |
299 | switch (code) | |
300 | { | |
1642229e HPN |
301 | EXT (BFD_RELOC_8, 0); |
302 | EXT (BFD_RELOC_16, 1); | |
252b5132 RH |
303 | EXT (BFD_RELOC_32, 2); |
304 | EXT (BFD_RELOC_HI22, 8); | |
305 | EXT (BFD_RELOC_LO10, 11); | |
306 | EXT (BFD_RELOC_32_PCREL_S2, 6); | |
307 | EXT (BFD_RELOC_SPARC_WDISP22, 7); | |
308 | EXT (BFD_RELOC_SPARC13, 10); | |
309 | EXT (BFD_RELOC_SPARC_GOT10, 14); | |
310 | EXT (BFD_RELOC_SPARC_BASE13, 15); | |
311 | EXT (BFD_RELOC_SPARC_GOT13, 15); | |
312 | EXT (BFD_RELOC_SPARC_GOT22, 16); | |
313 | EXT (BFD_RELOC_SPARC_PC10, 17); | |
314 | EXT (BFD_RELOC_SPARC_PC22, 18); | |
315 | EXT (BFD_RELOC_SPARC_WPLT30, 19); | |
316 | EXT (BFD_RELOC_SPARC_REV32, 26); | |
317 | default: return (reloc_howto_type *) NULL; | |
318 | } | |
319 | else | |
f7c33884 | 320 | /* std relocs. */ |
252b5132 RH |
321 | switch (code) |
322 | { | |
2846975a | 323 | STD (BFD_RELOC_8, 0); |
252b5132 RH |
324 | STD (BFD_RELOC_16, 1); |
325 | STD (BFD_RELOC_32, 2); | |
326 | STD (BFD_RELOC_8_PCREL, 4); | |
327 | STD (BFD_RELOC_16_PCREL, 5); | |
328 | STD (BFD_RELOC_32_PCREL, 6); | |
329 | STD (BFD_RELOC_16_BASEREL, 9); | |
330 | STD (BFD_RELOC_32_BASEREL, 10); | |
331 | default: return (reloc_howto_type *) NULL; | |
332 | } | |
333 | } | |
334 | ||
335 | /* | |
336 | SUBSECTION | |
337 | Internal entry points | |
338 | ||
339 | DESCRIPTION | |
340 | @file{aoutx.h} exports several routines for accessing the | |
341 | contents of an a.out file, which are gathered and exported in | |
342 | turn by various format specific files (eg sunos.c). | |
343 | ||
344 | */ | |
345 | ||
346 | /* | |
347 | FUNCTION | |
348 | aout_@var{size}_swap_exec_header_in | |
349 | ||
350 | SYNOPSIS | |
351 | void aout_@var{size}_swap_exec_header_in, | |
352 | (bfd *abfd, | |
353 | struct external_exec *raw_bytes, | |
354 | struct internal_exec *execp); | |
355 | ||
356 | DESCRIPTION | |
357 | Swap the information in an executable header @var{raw_bytes} taken | |
358 | from a raw byte stream memory image into the internal exec header | |
359 | structure @var{execp}. | |
360 | */ | |
361 | ||
362 | #ifndef NAME_swap_exec_header_in | |
363 | void | |
364 | NAME(aout,swap_exec_header_in) (abfd, raw_bytes, execp) | |
365 | bfd *abfd; | |
366 | struct external_exec *raw_bytes; | |
367 | struct internal_exec *execp; | |
368 | { | |
369 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
370 | ||
371 | /* The internal_exec structure has some fields that are unused in this | |
372 | configuration (IE for i960), so ensure that all such uninitialized | |
373 | fields are zero'd out. There are places where two of these structs | |
0ef5a5bd | 374 | are memcmp'd, and thus the contents do matter. */ |
252b5132 RH |
375 | memset ((PTR) execp, 0, sizeof (struct internal_exec)); |
376 | /* Now fill in fields in the execp, from the bytes in the raw data. */ | |
dc810e39 | 377 | execp->a_info = H_GET_32 (abfd, bytes->e_info); |
252b5132 RH |
378 | execp->a_text = GET_WORD (abfd, bytes->e_text); |
379 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
380 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
381 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
382 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
383 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); | |
384 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
385 | } | |
386 | #define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in) | |
387 | #endif | |
388 | ||
389 | /* | |
390 | FUNCTION | |
391 | aout_@var{size}_swap_exec_header_out | |
392 | ||
393 | SYNOPSIS | |
394 | void aout_@var{size}_swap_exec_header_out | |
395 | (bfd *abfd, | |
396 | struct internal_exec *execp, | |
397 | struct external_exec *raw_bytes); | |
398 | ||
399 | DESCRIPTION | |
400 | Swap the information in an internal exec header structure | |
401 | @var{execp} into the buffer @var{raw_bytes} ready for writing to disk. | |
402 | */ | |
403 | void | |
404 | NAME(aout,swap_exec_header_out) (abfd, execp, raw_bytes) | |
405 | bfd *abfd; | |
406 | struct internal_exec *execp; | |
407 | struct external_exec *raw_bytes; | |
408 | { | |
409 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
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 |
252b5132 RH |
425 | NAME(aout,make_sections) (abfd) |
426 | bfd *abfd; | |
427 | { | |
428 | if (obj_textsec (abfd) == (asection *) NULL | |
429 | && bfd_make_section (abfd, ".text") == (asection *) NULL) | |
b34976b6 | 430 | return FALSE; |
252b5132 RH |
431 | if (obj_datasec (abfd) == (asection *) NULL |
432 | && bfd_make_section (abfd, ".data") == (asection *) NULL) | |
b34976b6 | 433 | return FALSE; |
252b5132 RH |
434 | if (obj_bsssec (abfd) == (asection *) NULL |
435 | && bfd_make_section (abfd, ".bss") == (asection *) NULL) | |
b34976b6 AM |
436 | return FALSE; |
437 | return TRUE; | |
252b5132 RH |
438 | } |
439 | ||
440 | /* | |
441 | FUNCTION | |
442 | aout_@var{size}_some_aout_object_p | |
443 | ||
444 | SYNOPSIS | |
445 | const bfd_target *aout_@var{size}_some_aout_object_p | |
446 | (bfd *abfd, | |
beb0d161 | 447 | const bfd_target *(*callback_to_real_object_p) ()); |
252b5132 RH |
448 | |
449 | DESCRIPTION | |
450 | Some a.out variant thinks that the file open in @var{abfd} | |
451 | checking is an a.out file. Do some more checking, and set up | |
452 | for access if it really is. Call back to the calling | |
453 | environment's "finish up" function just before returning, to | |
454 | handle any last-minute setup. | |
455 | */ | |
456 | ||
457 | const bfd_target * | |
458 | NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p) | |
459 | bfd *abfd; | |
460 | struct internal_exec *execp; | |
461 | const bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *)); | |
462 | { | |
463 | struct aout_data_struct *rawptr, *oldrawptr; | |
464 | const bfd_target *result; | |
dc810e39 | 465 | bfd_size_type amt = sizeof (struct aout_data_struct); |
252b5132 | 466 | |
dc810e39 | 467 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt); |
252b5132 RH |
468 | if (rawptr == NULL) |
469 | return 0; | |
470 | ||
471 | oldrawptr = abfd->tdata.aout_data; | |
472 | abfd->tdata.aout_data = rawptr; | |
473 | ||
474 | /* Copy the contents of the old tdata struct. | |
475 | In particular, we want the subformat, since for hpux it was set in | |
476 | hp300hpux.c:swap_exec_header_in and will be used in | |
477 | hp300hpux.c:callback. */ | |
478 | if (oldrawptr != NULL) | |
479 | *abfd->tdata.aout_data = *oldrawptr; | |
480 | ||
481 | abfd->tdata.aout_data->a.hdr = &rawptr->e; | |
f7c33884 NC |
482 | /* Copy in the internal_exec struct. */ |
483 | *(abfd->tdata.aout_data->a.hdr) = *execp; | |
252b5132 RH |
484 | execp = abfd->tdata.aout_data->a.hdr; |
485 | ||
f7c33884 | 486 | /* Set the file flags. */ |
252b5132 RH |
487 | abfd->flags = BFD_NO_FLAGS; |
488 | if (execp->a_drsize || execp->a_trsize) | |
489 | abfd->flags |= HAS_RELOC; | |
f7c33884 | 490 | /* Setting of EXEC_P has been deferred to the bottom of this function. */ |
252b5132 RH |
491 | if (execp->a_syms) |
492 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; | |
923f08ff | 493 | if (N_DYNAMIC (*execp)) |
252b5132 RH |
494 | abfd->flags |= DYNAMIC; |
495 | ||
496 | if (N_MAGIC (*execp) == ZMAGIC) | |
497 | { | |
498 | abfd->flags |= D_PAGED | WP_TEXT; | |
499 | adata (abfd).magic = z_magic; | |
500 | } | |
501 | else if (N_MAGIC (*execp) == QMAGIC) | |
502 | { | |
503 | abfd->flags |= D_PAGED | WP_TEXT; | |
504 | adata (abfd).magic = z_magic; | |
505 | adata (abfd).subformat = q_magic_format; | |
506 | } | |
507 | else if (N_MAGIC (*execp) == NMAGIC) | |
508 | { | |
509 | abfd->flags |= WP_TEXT; | |
510 | adata (abfd).magic = n_magic; | |
511 | } | |
512 | else if (N_MAGIC (*execp) == OMAGIC | |
513 | || N_MAGIC (*execp) == BMAGIC) | |
514 | adata (abfd).magic = o_magic; | |
515 | else | |
516 | { | |
517 | /* Should have been checked with N_BADMAG before this routine | |
518 | was called. */ | |
519 | abort (); | |
520 | } | |
521 | ||
522 | bfd_get_start_address (abfd) = execp->a_entry; | |
523 | ||
524 | obj_aout_symbols (abfd) = (aout_symbol_type *)NULL; | |
525 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); | |
526 | ||
527 | /* The default relocation entry size is that of traditional V7 Unix. */ | |
528 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
529 | ||
0ef5a5bd | 530 | /* The default symbol entry size is that of traditional Unix. */ |
252b5132 RH |
531 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; |
532 | ||
533 | #ifdef USE_MMAP | |
534 | bfd_init_window (&obj_aout_sym_window (abfd)); | |
535 | bfd_init_window (&obj_aout_string_window (abfd)); | |
536 | #endif | |
537 | obj_aout_external_syms (abfd) = NULL; | |
538 | obj_aout_external_strings (abfd) = NULL; | |
539 | obj_aout_sym_hashes (abfd) = NULL; | |
540 | ||
541 | if (! NAME(aout,make_sections) (abfd)) | |
487e54f2 | 542 | goto error_ret; |
252b5132 | 543 | |
eea6121a AM |
544 | obj_datasec (abfd)->size = execp->a_data; |
545 | obj_bsssec (abfd)->size = execp->a_bss; | |
252b5132 RH |
546 | |
547 | obj_textsec (abfd)->flags = | |
548 | (execp->a_trsize != 0 | |
549 | ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) | |
550 | : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); | |
551 | obj_datasec (abfd)->flags = | |
552 | (execp->a_drsize != 0 | |
553 | ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) | |
554 | : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); | |
555 | obj_bsssec (abfd)->flags = SEC_ALLOC; | |
556 | ||
557 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
558 | /* The common code can't fill in these things because they depend | |
559 | on either the start address of the text segment, the rounding | |
560 | up of virtual addresses between segments, or the starting file | |
561 | position of the text segment -- all of which varies among different | |
562 | versions of a.out. */ | |
563 | ||
564 | /* Call back to the format-dependent code to fill in the rest of the | |
565 | fields and do any further cleanup. Things that should be filled | |
566 | in by the callback: */ | |
567 | ||
568 | struct exec *execp = exec_hdr (abfd); | |
569 | ||
923f08ff | 570 | obj_textsec (abfd)->size = N_TXTSIZE (*execp); |
f7c33884 | 571 | /* Data and bss are already filled in since they're so standard. */ |
252b5132 | 572 | |
f7c33884 | 573 | /* The virtual memory addresses of the sections. */ |
923f08ff AM |
574 | obj_textsec (abfd)->vma = N_TXTADDR (*execp); |
575 | obj_datasec (abfd)->vma = N_DATADDR (*execp); | |
576 | obj_bsssec (abfd)->vma = N_BSSADDR (*execp); | |
252b5132 | 577 | |
f7c33884 | 578 | /* The file offsets of the sections. */ |
923f08ff AM |
579 | obj_textsec (abfd)->filepos = N_TXTOFF (*execp); |
580 | obj_datasec (abfd)->filepos = N_DATOFF (*execp); | |
252b5132 | 581 | |
f7c33884 | 582 | /* The file offsets of the relocation info. */ |
923f08ff AM |
583 | obj_textsec (abfd)->rel_filepos = N_TRELOFF (*execp); |
584 | obj_datasec (abfd)->rel_filepos = N_DRELOFF (*execp); | |
252b5132 RH |
585 | |
586 | /* The file offsets of the string table and symbol table. */ | |
587 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
588 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
589 | ||
590 | /* Determine the architecture and machine type of the object file. */ | |
923f08ff AM |
591 | switch (N_MACHTYPE (*exec_hdr (abfd))) |
592 | { | |
593 | default: | |
594 | abfd->obj_arch = bfd_arch_obscure; | |
595 | break; | |
596 | } | |
252b5132 | 597 | |
923f08ff AM |
598 | adata (abfd)->page_size = TARGET_PAGE_SIZE; |
599 | adata (abfd)->segment_size = SEGMENT_SIZE; | |
600 | adata (abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
252b5132 RH |
601 | |
602 | return abfd->xvec; | |
603 | ||
604 | /* The architecture is encoded in various ways in various a.out variants, | |
605 | or is not encoded at all in some of them. The relocation size depends | |
606 | on the architecture and the a.out variant. Finally, the return value | |
607 | is the bfd_target vector in use. If an error occurs, return zero and | |
608 | set bfd_error to the appropriate error code. | |
609 | ||
610 | Formats such as b.out, which have additional fields in the a.out | |
611 | header, should cope with them in this callback as well. */ | |
612 | #endif /* DOCUMENTATION */ | |
613 | ||
beb0d161 | 614 | result = (*callback_to_real_object_p) (abfd); |
252b5132 RH |
615 | |
616 | /* Now that the segment addresses have been worked out, take a better | |
617 | guess at whether the file is executable. If the entry point | |
618 | is within the text segment, assume it is. (This makes files | |
619 | executable even if their entry point address is 0, as long as | |
620 | their text starts at zero.). | |
621 | ||
622 | This test had to be changed to deal with systems where the text segment | |
623 | runs at a different location than the default. The problem is that the | |
624 | entry address can appear to be outside the text segment, thus causing an | |
625 | erroneous conclusion that the file isn't executable. | |
626 | ||
627 | To fix this, we now accept any non-zero entry point as an indication of | |
628 | executability. This will work most of the time, since only the linker | |
0ef5a5bd | 629 | sets the entry point, and that is likely to be non-zero for most systems. */ |
252b5132 RH |
630 | |
631 | if (execp->a_entry != 0 | |
923f08ff AM |
632 | || (execp->a_entry >= obj_textsec (abfd)->vma |
633 | && execp->a_entry < (obj_textsec (abfd)->vma | |
eea6121a | 634 | + obj_textsec (abfd)->size))) |
252b5132 RH |
635 | abfd->flags |= EXEC_P; |
636 | #ifdef STAT_FOR_EXEC | |
637 | else | |
638 | { | |
639 | struct stat stat_buf; | |
640 | ||
641 | /* The original heuristic doesn't work in some important cases. | |
642 | The a.out file has no information about the text start | |
643 | address. For files (like kernels) linked to non-standard | |
644 | addresses (ld -Ttext nnn) the entry point may not be between | |
645 | the default text start (obj_textsec(abfd)->vma) and | |
646 | (obj_textsec(abfd)->vma) + text size. This is not just a mach | |
647 | issue. Many kernels are loaded at non standard addresses. */ | |
648 | if (abfd->iostream != NULL | |
649 | && (abfd->flags & BFD_IN_MEMORY) == 0 | |
923f08ff | 650 | && (fstat (fileno ((FILE *) (abfd->iostream)), &stat_buf) == 0) |
252b5132 RH |
651 | && ((stat_buf.st_mode & 0111) != 0)) |
652 | abfd->flags |= EXEC_P; | |
653 | } | |
654 | #endif /* STAT_FOR_EXEC */ | |
655 | ||
656 | if (result) | |
657 | { | |
658 | #if 0 /* These should be set correctly anyways. */ | |
659 | abfd->sections = obj_textsec (abfd); | |
660 | obj_textsec (abfd)->next = obj_datasec (abfd); | |
661 | obj_datasec (abfd)->next = obj_bsssec (abfd); | |
662 | #endif | |
487e54f2 | 663 | return result; |
252b5132 | 664 | } |
487e54f2 AM |
665 | |
666 | error_ret: | |
667 | bfd_release (abfd, rawptr); | |
668 | abfd->tdata.aout_data = oldrawptr; | |
669 | return NULL; | |
252b5132 RH |
670 | } |
671 | ||
672 | /* | |
673 | FUNCTION | |
674 | aout_@var{size}_mkobject | |
675 | ||
676 | SYNOPSIS | |
b34976b6 | 677 | bfd_boolean aout_@var{size}_mkobject, (bfd *abfd); |
252b5132 RH |
678 | |
679 | DESCRIPTION | |
680 | Initialize BFD @var{abfd} for use with a.out files. | |
681 | */ | |
682 | ||
b34976b6 | 683 | bfd_boolean |
252b5132 RH |
684 | NAME(aout,mkobject) (abfd) |
685 | bfd *abfd; | |
686 | { | |
dc810e39 AM |
687 | struct aout_data_struct *rawptr; |
688 | bfd_size_type amt = sizeof (struct aout_data_struct); | |
252b5132 RH |
689 | |
690 | bfd_set_error (bfd_error_system_call); | |
691 | ||
dc810e39 | 692 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt); |
252b5132 | 693 | if (rawptr == NULL) |
b34976b6 | 694 | return FALSE; |
252b5132 RH |
695 | |
696 | abfd->tdata.aout_data = rawptr; | |
697 | exec_hdr (abfd) = &(rawptr->e); | |
698 | ||
dc810e39 AM |
699 | obj_textsec (abfd) = (asection *) NULL; |
700 | obj_datasec (abfd) = (asection *) NULL; | |
701 | obj_bsssec (abfd) = (asection *) NULL; | |
252b5132 | 702 | |
b34976b6 | 703 | return TRUE; |
252b5132 RH |
704 | } |
705 | ||
252b5132 RH |
706 | /* |
707 | FUNCTION | |
708 | aout_@var{size}_machine_type | |
709 | ||
710 | SYNOPSIS | |
711 | enum machine_type aout_@var{size}_machine_type | |
712 | (enum bfd_architecture arch, | |
713 | unsigned long machine)); | |
714 | ||
715 | DESCRIPTION | |
716 | Keep track of machine architecture and machine type for | |
717 | a.out's. Return the <<machine_type>> for a particular | |
718 | architecture and machine, or <<M_UNKNOWN>> if that exact architecture | |
719 | and machine can't be represented in a.out format. | |
720 | ||
721 | If the architecture is understood, machine type 0 (default) | |
722 | is always understood. | |
723 | */ | |
724 | ||
725 | enum machine_type | |
726 | NAME(aout,machine_type) (arch, machine, unknown) | |
727 | enum bfd_architecture arch; | |
728 | unsigned long machine; | |
b34976b6 | 729 | bfd_boolean *unknown; |
252b5132 RH |
730 | { |
731 | enum machine_type arch_flags; | |
732 | ||
733 | arch_flags = M_UNKNOWN; | |
b34976b6 | 734 | *unknown = TRUE; |
252b5132 | 735 | |
923f08ff AM |
736 | switch (arch) |
737 | { | |
738 | case bfd_arch_sparc: | |
739 | if (machine == 0 | |
740 | || machine == bfd_mach_sparc | |
741 | || machine == bfd_mach_sparc_sparclite | |
742 | || machine == bfd_mach_sparc_sparclite_le | |
743 | || machine == bfd_mach_sparc_v9) | |
744 | arch_flags = M_SPARC; | |
745 | else if (machine == bfd_mach_sparc_sparclet) | |
746 | arch_flags = M_SPARCLET; | |
747 | break; | |
748 | ||
749 | case bfd_arch_m68k: | |
750 | switch (machine) | |
751 | { | |
752 | case 0: arch_flags = M_68010; break; | |
b34976b6 | 753 | case bfd_mach_m68000: arch_flags = M_UNKNOWN; *unknown = FALSE; break; |
923f08ff AM |
754 | case bfd_mach_m68010: arch_flags = M_68010; break; |
755 | case bfd_mach_m68020: arch_flags = M_68020; break; | |
756 | default: arch_flags = M_UNKNOWN; break; | |
757 | } | |
252b5132 | 758 | break; |
923f08ff AM |
759 | |
760 | case bfd_arch_i386: | |
3b77b1d5 AM |
761 | if (machine == 0 |
762 | || machine == bfd_mach_i386_i386 | |
763 | || machine == bfd_mach_i386_i386_intel_syntax) | |
923f08ff | 764 | arch_flags = M_386; |
252b5132 | 765 | break; |
923f08ff AM |
766 | |
767 | case bfd_arch_a29k: | |
768 | if (machine == 0) | |
769 | arch_flags = M_29K; | |
252b5132 | 770 | break; |
923f08ff AM |
771 | |
772 | case bfd_arch_arm: | |
773 | if (machine == 0) | |
774 | arch_flags = M_ARM; | |
252b5132 | 775 | break; |
252b5132 | 776 | |
923f08ff AM |
777 | case bfd_arch_mips: |
778 | switch (machine) | |
779 | { | |
780 | case 0: | |
781 | case bfd_mach_mips3000: | |
782 | case bfd_mach_mips3900: | |
783 | arch_flags = M_MIPS1; | |
784 | break; | |
785 | case bfd_mach_mips6000: | |
786 | arch_flags = M_MIPS2; | |
787 | break; | |
788 | case bfd_mach_mips4000: | |
789 | case bfd_mach_mips4010: | |
790 | case bfd_mach_mips4100: | |
791 | case bfd_mach_mips4300: | |
792 | case bfd_mach_mips4400: | |
793 | case bfd_mach_mips4600: | |
794 | case bfd_mach_mips4650: | |
795 | case bfd_mach_mips8000: | |
0d2e43ed | 796 | case bfd_mach_mips9000: |
923f08ff AM |
797 | case bfd_mach_mips10000: |
798 | case bfd_mach_mips12000: | |
799 | case bfd_mach_mips16: | |
800 | case bfd_mach_mipsisa32: | |
af7ee8bf | 801 | case bfd_mach_mipsisa32r2: |
923f08ff AM |
802 | case bfd_mach_mips5: |
803 | case bfd_mach_mipsisa64: | |
5f74bc13 | 804 | case bfd_mach_mipsisa64r2: |
923f08ff AM |
805 | case bfd_mach_mips_sb1: |
806 | /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */ | |
807 | arch_flags = M_MIPS2; | |
808 | break; | |
809 | default: | |
810 | arch_flags = M_UNKNOWN; | |
811 | break; | |
812 | } | |
813 | break; | |
814 | ||
815 | case bfd_arch_ns32k: | |
816 | switch (machine) | |
817 | { | |
818 | case 0: arch_flags = M_NS32532; break; | |
819 | case 32032: arch_flags = M_NS32032; break; | |
820 | case 32532: arch_flags = M_NS32532; break; | |
821 | default: arch_flags = M_UNKNOWN; break; | |
822 | } | |
823 | break; | |
252b5132 | 824 | |
923f08ff | 825 | case bfd_arch_vax: |
b34976b6 | 826 | *unknown = FALSE; |
923f08ff | 827 | break; |
06c15ad7 | 828 | |
923f08ff AM |
829 | case bfd_arch_cris: |
830 | if (machine == 0 || machine == 255) | |
831 | arch_flags = M_CRIS; | |
832 | break; | |
833 | ||
727e493d MK |
834 | case bfd_arch_m88k: |
835 | *unknown = FALSE; | |
836 | break; | |
837 | ||
923f08ff AM |
838 | default: |
839 | arch_flags = M_UNKNOWN; | |
840 | } | |
252b5132 RH |
841 | |
842 | if (arch_flags != M_UNKNOWN) | |
b34976b6 | 843 | *unknown = FALSE; |
252b5132 RH |
844 | |
845 | return arch_flags; | |
846 | } | |
847 | ||
252b5132 RH |
848 | /* |
849 | FUNCTION | |
850 | aout_@var{size}_set_arch_mach | |
851 | ||
852 | SYNOPSIS | |
b34976b6 | 853 | bfd_boolean aout_@var{size}_set_arch_mach, |
252b5132 RH |
854 | (bfd *, |
855 | enum bfd_architecture arch, | |
856 | unsigned long machine)); | |
857 | ||
858 | DESCRIPTION | |
859 | Set the architecture and the machine of the BFD @var{abfd} to the | |
860 | values @var{arch} and @var{machine}. Verify that @var{abfd}'s format | |
861 | can support the architecture required. | |
862 | */ | |
863 | ||
b34976b6 | 864 | bfd_boolean |
252b5132 RH |
865 | NAME(aout,set_arch_mach) (abfd, arch, machine) |
866 | bfd *abfd; | |
867 | enum bfd_architecture arch; | |
868 | unsigned long machine; | |
869 | { | |
870 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) | |
b34976b6 | 871 | return FALSE; |
252b5132 RH |
872 | |
873 | if (arch != bfd_arch_unknown) | |
874 | { | |
b34976b6 | 875 | bfd_boolean unknown; |
252b5132 RH |
876 | |
877 | NAME(aout,machine_type) (arch, machine, &unknown); | |
878 | if (unknown) | |
b34976b6 | 879 | return FALSE; |
252b5132 RH |
880 | } |
881 | ||
f7c33884 | 882 | /* Determine the size of a relocation entry. */ |
923f08ff AM |
883 | switch (arch) |
884 | { | |
885 | case bfd_arch_sparc: | |
886 | case bfd_arch_a29k: | |
887 | case bfd_arch_mips: | |
888 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; | |
889 | break; | |
890 | default: | |
891 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
892 | break; | |
893 | } | |
252b5132 | 894 | |
923f08ff | 895 | return (*aout_backend_info (abfd)->set_sizes) (abfd); |
252b5132 RH |
896 | } |
897 | ||
898 | static void | |
899 | adjust_o_magic (abfd, execp) | |
900 | bfd *abfd; | |
901 | struct internal_exec *execp; | |
902 | { | |
903 | file_ptr pos = adata (abfd).exec_bytes_size; | |
904 | bfd_vma vma = 0; | |
905 | int pad = 0; | |
906 | ||
907 | /* Text. */ | |
923f08ff AM |
908 | obj_textsec (abfd)->filepos = pos; |
909 | if (!obj_textsec (abfd)->user_set_vma) | |
910 | obj_textsec (abfd)->vma = vma; | |
252b5132 | 911 | else |
923f08ff | 912 | vma = obj_textsec (abfd)->vma; |
252b5132 | 913 | |
eea6121a AM |
914 | pos += obj_textsec (abfd)->size; |
915 | vma += obj_textsec (abfd)->size; | |
252b5132 RH |
916 | |
917 | /* Data. */ | |
923f08ff | 918 | if (!obj_datasec (abfd)->user_set_vma) |
252b5132 | 919 | { |
f7c33884 | 920 | #if 0 /* ?? Does alignment in the file image really matter? */ |
923f08ff | 921 | pad = align_power (vma, obj_datasec (abfd)->alignment_power) - vma; |
252b5132 | 922 | #endif |
eea6121a | 923 | obj_textsec (abfd)->size += pad; |
252b5132 RH |
924 | pos += pad; |
925 | vma += pad; | |
923f08ff | 926 | obj_datasec (abfd)->vma = vma; |
252b5132 RH |
927 | } |
928 | else | |
923f08ff AM |
929 | vma = obj_datasec (abfd)->vma; |
930 | obj_datasec (abfd)->filepos = pos; | |
eea6121a AM |
931 | pos += obj_datasec (abfd)->size; |
932 | vma += obj_datasec (abfd)->size; | |
252b5132 RH |
933 | |
934 | /* BSS. */ | |
923f08ff | 935 | if (!obj_bsssec (abfd)->user_set_vma) |
252b5132 RH |
936 | { |
937 | #if 0 | |
923f08ff | 938 | pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma; |
252b5132 | 939 | #endif |
eea6121a | 940 | obj_datasec (abfd)->size += pad; |
252b5132 RH |
941 | pos += pad; |
942 | vma += pad; | |
923f08ff | 943 | obj_bsssec (abfd)->vma = vma; |
252b5132 RH |
944 | } |
945 | else | |
946 | { | |
08da05b0 | 947 | /* The VMA of the .bss section is set by the VMA of the |
252b5132 RH |
948 | .data section plus the size of the .data section. We may |
949 | need to add padding bytes to make this true. */ | |
950 | pad = obj_bsssec (abfd)->vma - vma; | |
951 | if (pad > 0) | |
952 | { | |
eea6121a | 953 | obj_datasec (abfd)->size += pad; |
252b5132 RH |
954 | pos += pad; |
955 | } | |
956 | } | |
923f08ff | 957 | obj_bsssec (abfd)->filepos = pos; |
252b5132 RH |
958 | |
959 | /* Fix up the exec header. */ | |
eea6121a AM |
960 | execp->a_text = obj_textsec (abfd)->size; |
961 | execp->a_data = obj_datasec (abfd)->size; | |
962 | execp->a_bss = obj_bsssec (abfd)->size; | |
252b5132 RH |
963 | N_SET_MAGIC (*execp, OMAGIC); |
964 | } | |
965 | ||
966 | static void | |
967 | adjust_z_magic (abfd, execp) | |
968 | bfd *abfd; | |
969 | struct internal_exec *execp; | |
970 | { | |
971 | bfd_size_type data_pad, text_pad; | |
972 | file_ptr text_end; | |
dc810e39 | 973 | const struct aout_backend_data *abdp; |
252b5132 | 974 | int ztih; /* Nonzero if text includes exec header. */ |
0ef5a5bd | 975 | |
252b5132 RH |
976 | abdp = aout_backend_info (abfd); |
977 | ||
978 | /* Text. */ | |
979 | ztih = (abdp != NULL | |
980 | && (abdp->text_includes_header | |
981 | || obj_aout_subformat (abfd) == q_magic_format)); | |
923f08ff AM |
982 | obj_textsec (abfd)->filepos = (ztih |
983 | ? adata (abfd).exec_bytes_size | |
984 | : adata (abfd).zmagic_disk_block_size); | |
985 | if (! obj_textsec (abfd)->user_set_vma) | |
252b5132 RH |
986 | { |
987 | /* ?? Do we really need to check for relocs here? */ | |
923f08ff AM |
988 | obj_textsec (abfd)->vma = ((abfd->flags & HAS_RELOC) |
989 | ? 0 | |
990 | : (ztih | |
991 | ? (abdp->default_text_vma | |
992 | + adata (abfd).exec_bytes_size) | |
993 | : abdp->default_text_vma)); | |
252b5132 RH |
994 | text_pad = 0; |
995 | } | |
996 | else | |
997 | { | |
998 | /* The .text section is being loaded at an unusual address. We | |
999 | may need to pad it such that the .data section starts at a page | |
1000 | boundary. */ | |
1001 | if (ztih) | |
1002 | text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma) | |
1003 | & (adata (abfd).page_size - 1)); | |
1004 | else | |
1005 | text_pad = ((- obj_textsec (abfd)->vma) | |
1006 | & (adata (abfd).page_size - 1)); | |
1007 | } | |
1008 | ||
1009 | /* Find start of data. */ | |
1010 | if (ztih) | |
1011 | { | |
eea6121a | 1012 | text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->size; |
252b5132 RH |
1013 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
1014 | } | |
1015 | else | |
1016 | { | |
1017 | /* Note that if page_size == zmagic_disk_block_size, then | |
1018 | filepos == page_size, and this case is the same as the ztih | |
1019 | case. */ | |
eea6121a | 1020 | text_end = obj_textsec (abfd)->size; |
252b5132 RH |
1021 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
1022 | text_end += obj_textsec (abfd)->filepos; | |
1023 | } | |
eea6121a | 1024 | obj_textsec (abfd)->size += text_pad; |
252b5132 RH |
1025 | text_end += text_pad; |
1026 | ||
1027 | /* Data. */ | |
923f08ff | 1028 | if (!obj_datasec (abfd)->user_set_vma) |
252b5132 RH |
1029 | { |
1030 | bfd_vma vma; | |
eea6121a | 1031 | vma = obj_textsec (abfd)->vma + obj_textsec (abfd)->size; |
923f08ff | 1032 | obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size); |
252b5132 RH |
1033 | } |
1034 | if (abdp && abdp->zmagic_mapped_contiguous) | |
1035 | { | |
dee0a8f4 NC |
1036 | asection * text = obj_textsec (abfd); |
1037 | asection * data = obj_datasec (abfd); | |
1038 | ||
eea6121a | 1039 | text_pad = data->vma - (text->vma + text->size); |
dee0a8f4 NC |
1040 | /* Only pad the text section if the data |
1041 | section is going to be placed after it. */ | |
1042 | if (text_pad > 0) | |
eea6121a | 1043 | text->size += text_pad; |
252b5132 | 1044 | } |
923f08ff | 1045 | obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos |
eea6121a | 1046 | + obj_textsec (abfd)->size); |
0ef5a5bd | 1047 | |
252b5132 | 1048 | /* Fix up exec header while we're at it. */ |
eea6121a | 1049 | execp->a_text = obj_textsec (abfd)->size; |
252b5132 | 1050 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) |
923f08ff | 1051 | execp->a_text += adata (abfd).exec_bytes_size; |
252b5132 RH |
1052 | if (obj_aout_subformat (abfd) == q_magic_format) |
1053 | N_SET_MAGIC (*execp, QMAGIC); | |
1054 | else | |
1055 | N_SET_MAGIC (*execp, ZMAGIC); | |
1056 | ||
1057 | /* Spec says data section should be rounded up to page boundary. */ | |
eea6121a AM |
1058 | obj_datasec (abfd)->size |
1059 | = align_power (obj_datasec (abfd)->size, | |
923f08ff | 1060 | obj_bsssec (abfd)->alignment_power); |
eea6121a | 1061 | execp->a_data = BFD_ALIGN (obj_datasec (abfd)->size, |
923f08ff | 1062 | adata (abfd).page_size); |
eea6121a | 1063 | data_pad = execp->a_data - obj_datasec (abfd)->size; |
252b5132 RH |
1064 | |
1065 | /* BSS. */ | |
923f08ff AM |
1066 | if (!obj_bsssec (abfd)->user_set_vma) |
1067 | obj_bsssec (abfd)->vma = (obj_datasec (abfd)->vma | |
eea6121a | 1068 | + obj_datasec (abfd)->size); |
252b5132 RH |
1069 | /* If the BSS immediately follows the data section and extra space |
1070 | in the page is left after the data section, fudge data | |
1071 | in the header so that the bss section looks smaller by that | |
1072 | amount. We'll start the bss section there, and lie to the OS. | |
1073 | (Note that a linker script, as well as the above assignment, | |
1074 | could have explicitly set the BSS vma to immediately follow | |
1075 | the data section.) */ | |
923f08ff | 1076 | if (align_power (obj_bsssec (abfd)->vma, obj_bsssec (abfd)->alignment_power) |
eea6121a AM |
1077 | == obj_datasec (abfd)->vma + obj_datasec (abfd)->size) |
1078 | execp->a_bss = (data_pad > obj_bsssec (abfd)->size | |
1079 | ? 0 : obj_bsssec (abfd)->size - data_pad); | |
252b5132 | 1080 | else |
eea6121a | 1081 | execp->a_bss = obj_bsssec (abfd)->size; |
252b5132 RH |
1082 | } |
1083 | ||
1084 | static void | |
1085 | adjust_n_magic (abfd, execp) | |
1086 | bfd *abfd; | |
1087 | struct internal_exec *execp; | |
1088 | { | |
923f08ff | 1089 | file_ptr pos = adata (abfd).exec_bytes_size; |
252b5132 RH |
1090 | bfd_vma vma = 0; |
1091 | int pad; | |
0ef5a5bd | 1092 | |
252b5132 | 1093 | /* Text. */ |
923f08ff AM |
1094 | obj_textsec (abfd)->filepos = pos; |
1095 | if (!obj_textsec (abfd)->user_set_vma) | |
1096 | obj_textsec (abfd)->vma = vma; | |
252b5132 | 1097 | else |
923f08ff | 1098 | vma = obj_textsec (abfd)->vma; |
eea6121a AM |
1099 | pos += obj_textsec (abfd)->size; |
1100 | vma += obj_textsec (abfd)->size; | |
252b5132 RH |
1101 | |
1102 | /* Data. */ | |
923f08ff AM |
1103 | obj_datasec (abfd)->filepos = pos; |
1104 | if (!obj_datasec (abfd)->user_set_vma) | |
1105 | obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size); | |
1106 | vma = obj_datasec (abfd)->vma; | |
0ef5a5bd | 1107 | |
252b5132 | 1108 | /* Since BSS follows data immediately, see if it needs alignment. */ |
eea6121a | 1109 | vma += obj_datasec (abfd)->size; |
923f08ff | 1110 | pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma; |
eea6121a AM |
1111 | obj_datasec (abfd)->size += pad; |
1112 | pos += obj_datasec (abfd)->size; | |
252b5132 RH |
1113 | |
1114 | /* BSS. */ | |
923f08ff AM |
1115 | if (!obj_bsssec (abfd)->user_set_vma) |
1116 | obj_bsssec (abfd)->vma = vma; | |
252b5132 | 1117 | else |
923f08ff | 1118 | vma = obj_bsssec (abfd)->vma; |
252b5132 RH |
1119 | |
1120 | /* Fix up exec header. */ | |
eea6121a AM |
1121 | execp->a_text = obj_textsec (abfd)->size; |
1122 | execp->a_data = obj_datasec (abfd)->size; | |
1123 | execp->a_bss = obj_bsssec (abfd)->size; | |
252b5132 RH |
1124 | N_SET_MAGIC (*execp, NMAGIC); |
1125 | } | |
1126 | ||
b34976b6 | 1127 | bfd_boolean |
252b5132 RH |
1128 | NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end) |
1129 | bfd *abfd; | |
1130 | bfd_size_type *text_size; | |
7442e600 | 1131 | file_ptr *text_end ATTRIBUTE_UNUSED; |
252b5132 RH |
1132 | { |
1133 | struct internal_exec *execp = exec_hdr (abfd); | |
1134 | ||
1135 | if (! NAME(aout,make_sections) (abfd)) | |
b34976b6 | 1136 | return FALSE; |
252b5132 | 1137 | |
923f08ff | 1138 | if (adata (abfd).magic != undecided_magic) |
b34976b6 | 1139 | return TRUE; |
252b5132 | 1140 | |
eea6121a AM |
1141 | obj_textsec (abfd)->size = |
1142 | align_power (obj_textsec (abfd)->size, | |
923f08ff | 1143 | obj_textsec (abfd)->alignment_power); |
252b5132 | 1144 | |
eea6121a | 1145 | *text_size = obj_textsec (abfd)->size; |
252b5132 RH |
1146 | /* Rule (heuristic) for when to pad to a new page. Note that there |
1147 | are (at least) two ways demand-paged (ZMAGIC) files have been | |
1148 | handled. Most Berkeley-based systems start the text segment at | |
1149 | (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text | |
1150 | segment right after the exec header; the latter is counted in the | |
1151 | text segment size, and is paged in by the kernel with the rest of | |
0ef5a5bd | 1152 | the text. */ |
252b5132 RH |
1153 | |
1154 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1155 | to understand enough to implement it. Better would probably be to go | |
1156 | right from BFD flags to alignment/positioning characteristics. But the | |
1157 | old code was sloppy enough about handling the flags, and had enough | |
1158 | other magic, that it was a little hard for me to understand. I think | |
1159 | I understand it better now, but I haven't time to do the cleanup this | |
1160 | minute. */ | |
1161 | ||
1162 | if (abfd->flags & D_PAGED) | |
1163 | /* Whether or not WP_TEXT is set -- let D_PAGED override. */ | |
923f08ff | 1164 | adata (abfd).magic = z_magic; |
252b5132 | 1165 | else if (abfd->flags & WP_TEXT) |
923f08ff | 1166 | adata (abfd).magic = n_magic; |
252b5132 | 1167 | else |
923f08ff | 1168 | adata (abfd).magic = o_magic; |
252b5132 RH |
1169 | |
1170 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1171 | #if __GNUC__ >= 2 | |
1172 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1173 | ({ char *str; | |
923f08ff AM |
1174 | switch (adata (abfd).magic) |
1175 | { | |
1176 | case n_magic: str = "NMAGIC"; break; | |
1177 | case o_magic: str = "OMAGIC"; break; | |
1178 | case z_magic: str = "ZMAGIC"; break; | |
1179 | default: abort (); | |
1180 | } | |
252b5132 RH |
1181 | str; |
1182 | }), | |
eea6121a | 1183 | obj_textsec (abfd)->vma, obj_textsec (abfd)->size, |
923f08ff | 1184 | obj_textsec (abfd)->alignment_power, |
eea6121a | 1185 | obj_datasec (abfd)->vma, obj_datasec (abfd)->size, |
923f08ff | 1186 | obj_datasec (abfd)->alignment_power, |
eea6121a | 1187 | obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size, |
923f08ff | 1188 | obj_bsssec (abfd)->alignment_power); |
252b5132 RH |
1189 | #endif |
1190 | #endif | |
1191 | ||
923f08ff | 1192 | switch (adata (abfd).magic) |
252b5132 RH |
1193 | { |
1194 | case o_magic: | |
1195 | adjust_o_magic (abfd, execp); | |
1196 | break; | |
1197 | case z_magic: | |
1198 | adjust_z_magic (abfd, execp); | |
1199 | break; | |
1200 | case n_magic: | |
1201 | adjust_n_magic (abfd, execp); | |
1202 | break; | |
1203 | default: | |
1204 | abort (); | |
1205 | } | |
1206 | ||
1207 | #ifdef BFD_AOUT_DEBUG | |
1208 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
eea6121a | 1209 | obj_textsec (abfd)->vma, obj_textsec (abfd)->size, |
923f08ff | 1210 | obj_textsec (abfd)->filepos, |
eea6121a | 1211 | obj_datasec (abfd)->vma, obj_datasec (abfd)->size, |
923f08ff | 1212 | obj_datasec (abfd)->filepos, |
eea6121a | 1213 | obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size); |
252b5132 RH |
1214 | #endif |
1215 | ||
b34976b6 | 1216 | return TRUE; |
252b5132 RH |
1217 | } |
1218 | ||
1219 | /* | |
1220 | FUNCTION | |
1221 | aout_@var{size}_new_section_hook | |
1222 | ||
1223 | SYNOPSIS | |
b34976b6 | 1224 | bfd_boolean aout_@var{size}_new_section_hook, |
252b5132 RH |
1225 | (bfd *abfd, |
1226 | asection *newsect)); | |
1227 | ||
1228 | DESCRIPTION | |
1229 | Called by the BFD in response to a @code{bfd_make_section} | |
1230 | request. | |
1231 | */ | |
b34976b6 | 1232 | bfd_boolean |
252b5132 RH |
1233 | NAME(aout,new_section_hook) (abfd, newsect) |
1234 | bfd *abfd; | |
1235 | asection *newsect; | |
1236 | { | |
f7c33884 | 1237 | /* Align to double at least. */ |
923f08ff | 1238 | newsect->alignment_power = bfd_get_arch_info (abfd)->section_align_power; |
252b5132 | 1239 | |
252b5132 | 1240 | if (bfd_get_format (abfd) == bfd_object) |
f7c33884 NC |
1241 | { |
1242 | if (obj_textsec (abfd) == NULL && !strcmp (newsect->name, ".text")) | |
1243 | { | |
1244 | obj_textsec (abfd)= newsect; | |
1245 | newsect->target_index = N_TEXT; | |
b34976b6 | 1246 | return TRUE; |
f7c33884 | 1247 | } |
252b5132 | 1248 | |
f7c33884 NC |
1249 | if (obj_datasec (abfd) == NULL && !strcmp (newsect->name, ".data")) |
1250 | { | |
1251 | obj_datasec (abfd) = newsect; | |
1252 | newsect->target_index = N_DATA; | |
b34976b6 | 1253 | return TRUE; |
f7c33884 | 1254 | } |
252b5132 | 1255 | |
f7c33884 NC |
1256 | if (obj_bsssec (abfd) == NULL && !strcmp (newsect->name, ".bss")) |
1257 | { | |
1258 | obj_bsssec (abfd) = newsect; | |
1259 | newsect->target_index = N_BSS; | |
b34976b6 | 1260 | return TRUE; |
f7c33884 NC |
1261 | } |
1262 | } | |
252b5132 | 1263 | |
f7c33884 | 1264 | /* We allow more than three sections internally. */ |
b34976b6 | 1265 | return TRUE; |
252b5132 RH |
1266 | } |
1267 | ||
b34976b6 | 1268 | bfd_boolean |
252b5132 RH |
1269 | NAME(aout,set_section_contents) (abfd, section, location, offset, count) |
1270 | bfd *abfd; | |
1271 | sec_ptr section; | |
0f867abe | 1272 | const PTR location; |
252b5132 RH |
1273 | file_ptr offset; |
1274 | bfd_size_type count; | |
1275 | { | |
1276 | file_ptr text_end; | |
1277 | bfd_size_type text_size; | |
1278 | ||
1279 | if (! abfd->output_has_begun) | |
1280 | { | |
1281 | if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) | |
b34976b6 | 1282 | return FALSE; |
252b5132 RH |
1283 | } |
1284 | ||
1285 | if (section == obj_bsssec (abfd)) | |
1286 | { | |
1287 | bfd_set_error (bfd_error_no_contents); | |
b34976b6 | 1288 | return FALSE; |
252b5132 RH |
1289 | } |
1290 | ||
1291 | if (section != obj_textsec (abfd) | |
1292 | && section != obj_datasec (abfd)) | |
1293 | { | |
e6af3a53 NC |
1294 | if (aout_section_merge_with_text_p (abfd, section)) |
1295 | section->filepos = obj_textsec (abfd)->filepos + | |
1296 | (section->vma - obj_textsec (abfd)->vma); | |
1297 | else | |
1298 | { | |
1299 | (*_bfd_error_handler) | |
1300 | (_("%s: can not represent section `%s' in a.out object file format"), | |
1301 | bfd_get_filename (abfd), bfd_get_section_name (abfd, section)); | |
1302 | bfd_set_error (bfd_error_nonrepresentable_section); | |
1303 | return FALSE; | |
1304 | } | |
252b5132 RH |
1305 | } |
1306 | ||
1307 | if (count != 0) | |
1308 | { | |
1309 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 | |
dc810e39 | 1310 | || bfd_bwrite (location, count, abfd) != count) |
b34976b6 | 1311 | return FALSE; |
252b5132 RH |
1312 | } |
1313 | ||
b34976b6 | 1314 | return TRUE; |
252b5132 RH |
1315 | } |
1316 | \f | |
1317 | /* Read the external symbols from an a.out file. */ | |
1318 | ||
b34976b6 | 1319 | static bfd_boolean |
252b5132 RH |
1320 | aout_get_external_symbols (abfd) |
1321 | bfd *abfd; | |
1322 | { | |
1323 | if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL) | |
1324 | { | |
1325 | bfd_size_type count; | |
1326 | struct external_nlist *syms; | |
dc810e39 | 1327 | bfd_size_type amt; |
252b5132 RH |
1328 | |
1329 | count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE; | |
1330 | ||
1331 | #ifdef USE_MMAP | |
82e51918 AM |
1332 | if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), |
1333 | exec_hdr (abfd)->a_syms, | |
b34976b6 AM |
1334 | &obj_aout_sym_window (abfd), TRUE)) |
1335 | return FALSE; | |
252b5132 RH |
1336 | syms = (struct external_nlist *) obj_aout_sym_window (abfd).data; |
1337 | #else | |
1338 | /* We allocate using malloc to make the values easy to free | |
1339 | later on. If we put them on the objalloc it might not be | |
1340 | possible to free them. */ | |
1341 | syms = ((struct external_nlist *) | |
dc810e39 | 1342 | bfd_malloc (count * EXTERNAL_NLIST_SIZE)); |
252b5132 | 1343 | if (syms == (struct external_nlist *) NULL && count != 0) |
b34976b6 | 1344 | return FALSE; |
252b5132 | 1345 | |
dc810e39 | 1346 | amt = exec_hdr (abfd)->a_syms; |
252b5132 | 1347 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 |
dc810e39 | 1348 | || bfd_bread (syms, amt, abfd) != amt) |
252b5132 RH |
1349 | { |
1350 | free (syms); | |
b34976b6 | 1351 | return FALSE; |
252b5132 RH |
1352 | } |
1353 | #endif | |
1354 | ||
1355 | obj_aout_external_syms (abfd) = syms; | |
1356 | obj_aout_external_sym_count (abfd) = count; | |
1357 | } | |
0ef5a5bd | 1358 | |
252b5132 RH |
1359 | if (obj_aout_external_strings (abfd) == NULL |
1360 | && exec_hdr (abfd)->a_syms != 0) | |
1361 | { | |
1362 | unsigned char string_chars[BYTES_IN_WORD]; | |
1363 | bfd_size_type stringsize; | |
1364 | char *strings; | |
dc810e39 | 1365 | bfd_size_type amt = BYTES_IN_WORD; |
252b5132 RH |
1366 | |
1367 | /* Get the size of the strings. */ | |
1368 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
dc810e39 | 1369 | || bfd_bread ((PTR) string_chars, amt, abfd) != amt) |
b34976b6 | 1370 | return FALSE; |
252b5132 RH |
1371 | stringsize = GET_WORD (abfd, string_chars); |
1372 | ||
1373 | #ifdef USE_MMAP | |
82e51918 | 1374 | if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize, |
b34976b6 AM |
1375 | &obj_aout_string_window (abfd), TRUE)) |
1376 | return FALSE; | |
252b5132 RH |
1377 | strings = (char *) obj_aout_string_window (abfd).data; |
1378 | #else | |
dc810e39 | 1379 | strings = (char *) bfd_malloc (stringsize + 1); |
252b5132 | 1380 | if (strings == NULL) |
b34976b6 | 1381 | return FALSE; |
252b5132 RH |
1382 | |
1383 | /* Skip space for the string count in the buffer for convenience | |
1384 | when using indexes. */ | |
dc810e39 AM |
1385 | amt = stringsize - BYTES_IN_WORD; |
1386 | if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt) | |
252b5132 RH |
1387 | { |
1388 | free (strings); | |
b34976b6 | 1389 | return FALSE; |
252b5132 RH |
1390 | } |
1391 | #endif | |
1392 | ||
1393 | /* Ensure that a zero index yields an empty string. */ | |
1394 | strings[0] = '\0'; | |
1395 | ||
1396 | strings[stringsize - 1] = 0; | |
1397 | ||
1398 | obj_aout_external_strings (abfd) = strings; | |
1399 | obj_aout_external_string_size (abfd) = stringsize; | |
1400 | } | |
1401 | ||
b34976b6 | 1402 | return TRUE; |
252b5132 RH |
1403 | } |
1404 | ||
1405 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type | |
1406 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1407 | nlist structure. This function is responsible for setting | |
1408 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
1409 | ||
b34976b6 | 1410 | static bfd_boolean |
252b5132 RH |
1411 | translate_from_native_sym_flags (abfd, cache_ptr) |
1412 | bfd *abfd; | |
1413 | aout_symbol_type *cache_ptr; | |
1414 | { | |
1415 | flagword visible; | |
1416 | ||
1417 | if ((cache_ptr->type & N_STAB) != 0 | |
1418 | || cache_ptr->type == N_FN) | |
1419 | { | |
1420 | asection *sec; | |
1421 | ||
1422 | /* This is a debugging symbol. */ | |
252b5132 RH |
1423 | cache_ptr->symbol.flags = BSF_DEBUGGING; |
1424 | ||
1425 | /* Work out the symbol section. */ | |
1426 | switch (cache_ptr->type & N_TYPE) | |
1427 | { | |
1428 | case N_TEXT: | |
1429 | case N_FN: | |
1430 | sec = obj_textsec (abfd); | |
1431 | break; | |
1432 | case N_DATA: | |
1433 | sec = obj_datasec (abfd); | |
1434 | break; | |
1435 | case N_BSS: | |
1436 | sec = obj_bsssec (abfd); | |
1437 | break; | |
1438 | default: | |
1439 | case N_ABS: | |
1440 | sec = bfd_abs_section_ptr; | |
1441 | break; | |
1442 | } | |
1443 | ||
1444 | cache_ptr->symbol.section = sec; | |
1445 | cache_ptr->symbol.value -= sec->vma; | |
1446 | ||
b34976b6 | 1447 | return TRUE; |
252b5132 RH |
1448 | } |
1449 | ||
1450 | /* Get the default visibility. This does not apply to all types, so | |
1451 | we just hold it in a local variable to use if wanted. */ | |
1452 | if ((cache_ptr->type & N_EXT) == 0) | |
1453 | visible = BSF_LOCAL; | |
1454 | else | |
1455 | visible = BSF_GLOBAL; | |
1456 | ||
1457 | switch (cache_ptr->type) | |
1458 | { | |
1459 | default: | |
1460 | case N_ABS: case N_ABS | N_EXT: | |
1461 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1462 | cache_ptr->symbol.flags = visible; | |
1463 | break; | |
1464 | ||
1465 | case N_UNDF | N_EXT: | |
1466 | if (cache_ptr->symbol.value != 0) | |
1467 | { | |
1468 | /* This is a common symbol. */ | |
1469 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
1470 | cache_ptr->symbol.section = bfd_com_section_ptr; | |
1471 | } | |
1472 | else | |
1473 | { | |
1474 | cache_ptr->symbol.flags = 0; | |
1475 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1476 | } | |
1477 | break; | |
1478 | ||
1479 | case N_TEXT: case N_TEXT | N_EXT: | |
1480 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1481 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1482 | cache_ptr->symbol.flags = visible; | |
1483 | break; | |
1484 | ||
1485 | /* N_SETV symbols used to represent set vectors placed in the | |
1486 | data section. They are no longer generated. Theoretically, | |
1487 | it was possible to extract the entries and combine them with | |
1488 | new ones, although I don't know if that was ever actually | |
1489 | done. Unless that feature is restored, treat them as data | |
1490 | symbols. */ | |
1491 | case N_SETV: case N_SETV | N_EXT: | |
1492 | case N_DATA: case N_DATA | N_EXT: | |
1493 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1494 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1495 | cache_ptr->symbol.flags = visible; | |
1496 | break; | |
1497 | ||
1498 | case N_BSS: case N_BSS | N_EXT: | |
1499 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1500 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1501 | cache_ptr->symbol.flags = visible; | |
1502 | break; | |
1503 | ||
1504 | case N_SETA: case N_SETA | N_EXT: | |
1505 | case N_SETT: case N_SETT | N_EXT: | |
1506 | case N_SETD: case N_SETD | N_EXT: | |
1507 | case N_SETB: case N_SETB | N_EXT: | |
1508 | { | |
1509 | /* This code is no longer needed. It used to be used to make | |
1510 | the linker handle set symbols, but they are now handled in | |
1511 | the add_symbols routine instead. */ | |
1512 | #if 0 | |
1513 | asection *section; | |
1514 | arelent_chain *reloc; | |
1515 | asection *into_section; | |
dc810e39 | 1516 | bfd_size_type amt; |
252b5132 RH |
1517 | |
1518 | /* This is a set symbol. The name of the symbol is the name | |
1519 | of the set (e.g., __CTOR_LIST__). The value of the symbol | |
1520 | is the value to add to the set. We create a section with | |
1521 | the same name as the symbol, and add a reloc to insert the | |
1522 | appropriate value into the section. | |
1523 | ||
1524 | This action is actually obsolete; it used to make the | |
1525 | linker do the right thing, but the linker no longer uses | |
1526 | this function. */ | |
1527 | ||
1528 | section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name); | |
1529 | if (section == NULL) | |
1530 | { | |
1531 | char *copy; | |
1532 | ||
dc810e39 AM |
1533 | amt = strlen (cache_ptr->symbol.name) + 1; |
1534 | copy = bfd_alloc (abfd, amt); | |
252b5132 | 1535 | if (copy == NULL) |
b34976b6 | 1536 | return FALSE; |
252b5132 RH |
1537 | |
1538 | strcpy (copy, cache_ptr->symbol.name); | |
1539 | section = bfd_make_section (abfd, copy); | |
1540 | if (section == NULL) | |
b34976b6 | 1541 | return FALSE; |
252b5132 RH |
1542 | } |
1543 | ||
dc810e39 AM |
1544 | amt = sizeof (arelent_chain); |
1545 | reloc = (arelent_chain *) bfd_alloc (abfd, amt); | |
252b5132 | 1546 | if (reloc == NULL) |
b34976b6 | 1547 | return FALSE; |
252b5132 RH |
1548 | |
1549 | /* Build a relocation entry for the constructor. */ | |
1550 | switch (cache_ptr->type & N_TYPE) | |
1551 | { | |
1552 | case N_SETA: | |
1553 | into_section = bfd_abs_section_ptr; | |
1554 | cache_ptr->type = N_ABS; | |
1555 | break; | |
1556 | case N_SETT: | |
1557 | into_section = obj_textsec (abfd); | |
1558 | cache_ptr->type = N_TEXT; | |
1559 | break; | |
1560 | case N_SETD: | |
1561 | into_section = obj_datasec (abfd); | |
1562 | cache_ptr->type = N_DATA; | |
1563 | break; | |
1564 | case N_SETB: | |
1565 | into_section = obj_bsssec (abfd); | |
1566 | cache_ptr->type = N_BSS; | |
1567 | break; | |
1568 | } | |
1569 | ||
1570 | /* Build a relocation pointing into the constructor section | |
1571 | pointing at the symbol in the set vector specified. */ | |
1572 | reloc->relent.addend = cache_ptr->symbol.value; | |
1573 | cache_ptr->symbol.section = into_section; | |
1574 | reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr; | |
1575 | ||
1576 | /* We modify the symbol to belong to a section depending upon | |
1577 | the name of the symbol, and add to the size of the section | |
1578 | to contain a pointer to the symbol. Build a reloc entry to | |
1579 | relocate to this symbol attached to this section. */ | |
1580 | section->flags = SEC_CONSTRUCTOR | SEC_RELOC; | |
1581 | ||
1582 | section->reloc_count++; | |
1583 | section->alignment_power = 2; | |
1584 | ||
1585 | reloc->next = section->constructor_chain; | |
1586 | section->constructor_chain = reloc; | |
eea6121a AM |
1587 | reloc->relent.address = section->size; |
1588 | section->size += BYTES_IN_WORD; | |
252b5132 | 1589 | |
923f08ff | 1590 | reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO (abfd); |
252b5132 RH |
1591 | |
1592 | #endif /* 0 */ | |
1593 | ||
1594 | switch (cache_ptr->type & N_TYPE) | |
1595 | { | |
1596 | case N_SETA: | |
1597 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1598 | break; | |
1599 | case N_SETT: | |
1600 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1601 | break; | |
1602 | case N_SETD: | |
1603 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1604 | break; | |
1605 | case N_SETB: | |
1606 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1607 | break; | |
1608 | } | |
1609 | ||
1610 | cache_ptr->symbol.flags |= BSF_CONSTRUCTOR; | |
1611 | } | |
1612 | break; | |
1613 | ||
1614 | case N_WARNING: | |
1615 | /* This symbol is the text of a warning message. The next | |
1616 | symbol is the symbol to associate the warning with. If a | |
1617 | reference is made to that symbol, a warning is issued. */ | |
1618 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
1619 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1620 | break; | |
1621 | ||
1622 | case N_INDR: case N_INDR | N_EXT: | |
1623 | /* An indirect symbol. This consists of two symbols in a row. | |
1624 | The first symbol is the name of the indirection. The second | |
1625 | symbol is the name of the target. A reference to the first | |
1626 | symbol becomes a reference to the second. */ | |
1627 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible; | |
1628 | cache_ptr->symbol.section = bfd_ind_section_ptr; | |
1629 | break; | |
1630 | ||
1631 | case N_WEAKU: | |
1632 | cache_ptr->symbol.section = bfd_und_section_ptr; | |
1633 | cache_ptr->symbol.flags = BSF_WEAK; | |
1634 | break; | |
1635 | ||
1636 | case N_WEAKA: | |
1637 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1638 | cache_ptr->symbol.flags = BSF_WEAK; | |
1639 | break; | |
1640 | ||
1641 | case N_WEAKT: | |
1642 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1643 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1644 | cache_ptr->symbol.flags = BSF_WEAK; | |
1645 | break; | |
1646 | ||
1647 | case N_WEAKD: | |
1648 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1649 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1650 | cache_ptr->symbol.flags = BSF_WEAK; | |
1651 | break; | |
1652 | ||
1653 | case N_WEAKB: | |
1654 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1655 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1656 | cache_ptr->symbol.flags = BSF_WEAK; | |
1657 | break; | |
1658 | } | |
1659 | ||
b34976b6 | 1660 | return TRUE; |
252b5132 RH |
1661 | } |
1662 | ||
1663 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ | |
1664 | ||
b34976b6 | 1665 | static bfd_boolean |
252b5132 RH |
1666 | translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer) |
1667 | bfd *abfd; | |
1668 | asymbol *cache_ptr; | |
1669 | struct external_nlist *sym_pointer; | |
1670 | { | |
1671 | bfd_vma value = cache_ptr->value; | |
1672 | asection *sec; | |
1673 | bfd_vma off; | |
1674 | ||
1675 | /* Mask out any existing type bits in case copying from one section | |
1676 | to another. */ | |
1677 | sym_pointer->e_type[0] &= ~N_TYPE; | |
1678 | ||
1679 | sec = bfd_get_section (cache_ptr); | |
1680 | off = 0; | |
1681 | ||
1682 | if (sec == NULL) | |
1683 | { | |
1684 | /* This case occurs, e.g., for the *DEBUG* section of a COFF | |
1685 | file. */ | |
1686 | (*_bfd_error_handler) | |
1687 | (_("%s: can not represent section for symbol `%s' in a.out object file format"), | |
0ef5a5bd | 1688 | bfd_get_filename (abfd), |
252b5132 RH |
1689 | cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*")); |
1690 | bfd_set_error (bfd_error_nonrepresentable_section); | |
b34976b6 | 1691 | return FALSE; |
252b5132 RH |
1692 | } |
1693 | ||
1694 | if (sec->output_section != NULL) | |
1695 | { | |
1696 | off = sec->output_offset; | |
1697 | sec = sec->output_section; | |
1698 | } | |
1699 | ||
1700 | if (bfd_is_abs_section (sec)) | |
1701 | sym_pointer->e_type[0] |= N_ABS; | |
1702 | else if (sec == obj_textsec (abfd)) | |
1703 | sym_pointer->e_type[0] |= N_TEXT; | |
1704 | else if (sec == obj_datasec (abfd)) | |
1705 | sym_pointer->e_type[0] |= N_DATA; | |
1706 | else if (sec == obj_bsssec (abfd)) | |
1707 | sym_pointer->e_type[0] |= N_BSS; | |
1708 | else if (bfd_is_und_section (sec)) | |
1709 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1710 | else if (bfd_is_ind_section (sec)) | |
1711 | sym_pointer->e_type[0] = N_INDR; | |
1712 | else if (bfd_is_com_section (sec)) | |
1713 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1714 | else | |
1715 | { | |
e6af3a53 NC |
1716 | if (aout_section_merge_with_text_p (abfd, sec)) |
1717 | sym_pointer->e_type[0] |= N_TEXT; | |
1718 | else | |
1719 | { | |
1720 | (*_bfd_error_handler) | |
1721 | (_("%s: can not represent section `%s' in a.out object file format"), | |
1722 | bfd_get_filename (abfd), bfd_get_section_name (abfd, sec)); | |
1723 | bfd_set_error (bfd_error_nonrepresentable_section); | |
1724 | return FALSE; | |
1725 | } | |
252b5132 RH |
1726 | } |
1727 | ||
f7c33884 | 1728 | /* Turn the symbol from section relative to absolute again. */ |
252b5132 RH |
1729 | value += sec->vma + off; |
1730 | ||
1731 | if ((cache_ptr->flags & BSF_WARNING) != 0) | |
1732 | sym_pointer->e_type[0] = N_WARNING; | |
1733 | ||
1734 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) | |
1735 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1736 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
1737 | sym_pointer->e_type[0] |= N_EXT; | |
930d924d L |
1738 | else if ((cache_ptr->flags & BSF_LOCAL) != 0) |
1739 | sym_pointer->e_type[0] &= ~N_EXT; | |
252b5132 RH |
1740 | |
1741 | if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0) | |
1742 | { | |
1743 | int type = ((aout_symbol_type *) cache_ptr)->type; | |
f7c33884 | 1744 | |
252b5132 RH |
1745 | switch (type) |
1746 | { | |
1747 | case N_ABS: type = N_SETA; break; | |
1748 | case N_TEXT: type = N_SETT; break; | |
1749 | case N_DATA: type = N_SETD; break; | |
1750 | case N_BSS: type = N_SETB; break; | |
1751 | } | |
1752 | sym_pointer->e_type[0] = type; | |
1753 | } | |
1754 | ||
1755 | if ((cache_ptr->flags & BSF_WEAK) != 0) | |
1756 | { | |
1757 | int type; | |
1758 | ||
1759 | switch (sym_pointer->e_type[0] & N_TYPE) | |
1760 | { | |
1761 | default: | |
1762 | case N_ABS: type = N_WEAKA; break; | |
1763 | case N_TEXT: type = N_WEAKT; break; | |
1764 | case N_DATA: type = N_WEAKD; break; | |
1765 | case N_BSS: type = N_WEAKB; break; | |
1766 | case N_UNDF: type = N_WEAKU; break; | |
1767 | } | |
1768 | sym_pointer->e_type[0] = type; | |
1769 | } | |
1770 | ||
923f08ff | 1771 | PUT_WORD (abfd, value, sym_pointer->e_value); |
252b5132 | 1772 | |
b34976b6 | 1773 | return TRUE; |
252b5132 RH |
1774 | } |
1775 | \f | |
0ef5a5bd | 1776 | /* Native-level interface to symbols. */ |
252b5132 RH |
1777 | |
1778 | asymbol * | |
1779 | NAME(aout,make_empty_symbol) (abfd) | |
1780 | bfd *abfd; | |
1781 | { | |
dc810e39 AM |
1782 | bfd_size_type amt = sizeof (aout_symbol_type); |
1783 | aout_symbol_type *new = (aout_symbol_type *) bfd_zalloc (abfd, amt); | |
252b5132 RH |
1784 | if (!new) |
1785 | return NULL; | |
1786 | new->symbol.the_bfd = abfd; | |
1787 | ||
1788 | return &new->symbol; | |
1789 | } | |
1790 | ||
1791 | /* Translate a set of internal symbols into external symbols. */ | |
1792 | ||
b34976b6 | 1793 | bfd_boolean |
252b5132 RH |
1794 | NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic) |
1795 | bfd *abfd; | |
1796 | aout_symbol_type *in; | |
1797 | struct external_nlist *ext; | |
1798 | bfd_size_type count; | |
1799 | char *str; | |
1800 | bfd_size_type strsize; | |
b34976b6 | 1801 | bfd_boolean dynamic; |
252b5132 RH |
1802 | { |
1803 | struct external_nlist *ext_end; | |
1804 | ||
1805 | ext_end = ext + count; | |
1806 | for (; ext < ext_end; ext++, in++) | |
1807 | { | |
1808 | bfd_vma x; | |
1809 | ||
1810 | x = GET_WORD (abfd, ext->e_strx); | |
1811 | in->symbol.the_bfd = abfd; | |
1812 | ||
1813 | /* For the normal symbols, the zero index points at the number | |
1814 | of bytes in the string table but is to be interpreted as the | |
1815 | null string. For the dynamic symbols, the number of bytes in | |
1816 | the string table is stored in the __DYNAMIC structure and the | |
1817 | zero index points at an actual string. */ | |
1818 | if (x == 0 && ! dynamic) | |
1819 | in->symbol.name = ""; | |
1820 | else if (x < strsize) | |
1821 | in->symbol.name = str + x; | |
1822 | else | |
b34976b6 | 1823 | return FALSE; |
252b5132 RH |
1824 | |
1825 | in->symbol.value = GET_SWORD (abfd, ext->e_value); | |
dc810e39 AM |
1826 | in->desc = H_GET_16 (abfd, ext->e_desc); |
1827 | in->other = H_GET_8 (abfd, ext->e_other); | |
1828 | in->type = H_GET_8 (abfd, ext->e_type); | |
252b5132 RH |
1829 | in->symbol.udata.p = NULL; |
1830 | ||
1831 | if (! translate_from_native_sym_flags (abfd, in)) | |
b34976b6 | 1832 | return FALSE; |
252b5132 RH |
1833 | |
1834 | if (dynamic) | |
1835 | in->symbol.flags |= BSF_DYNAMIC; | |
1836 | } | |
1837 | ||
b34976b6 | 1838 | return TRUE; |
252b5132 RH |
1839 | } |
1840 | ||
1841 | /* We read the symbols into a buffer, which is discarded when this | |
1842 | function exits. We read the strings into a buffer large enough to | |
0ef5a5bd | 1843 | hold them all plus all the cached symbol entries. */ |
252b5132 | 1844 | |
b34976b6 | 1845 | bfd_boolean |
252b5132 RH |
1846 | NAME(aout,slurp_symbol_table) (abfd) |
1847 | bfd *abfd; | |
1848 | { | |
1849 | struct external_nlist *old_external_syms; | |
1850 | aout_symbol_type *cached; | |
dc810e39 | 1851 | bfd_size_type cached_size; |
252b5132 | 1852 | |
f7c33884 | 1853 | /* If there's no work to be done, don't do any. */ |
252b5132 | 1854 | if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL) |
b34976b6 | 1855 | return TRUE; |
252b5132 RH |
1856 | |
1857 | old_external_syms = obj_aout_external_syms (abfd); | |
1858 | ||
1859 | if (! aout_get_external_symbols (abfd)) | |
b34976b6 | 1860 | return FALSE; |
252b5132 | 1861 | |
dc810e39 AM |
1862 | cached_size = obj_aout_external_sym_count (abfd); |
1863 | cached_size *= sizeof (aout_symbol_type); | |
9bab7074 | 1864 | cached = (aout_symbol_type *) bfd_zmalloc (cached_size); |
252b5132 | 1865 | if (cached == NULL && cached_size != 0) |
b34976b6 | 1866 | return FALSE; |
252b5132 RH |
1867 | |
1868 | /* Convert from external symbol information to internal. */ | |
1869 | if (! (NAME(aout,translate_symbol_table) | |
1870 | (abfd, cached, | |
1871 | obj_aout_external_syms (abfd), | |
1872 | obj_aout_external_sym_count (abfd), | |
1873 | obj_aout_external_strings (abfd), | |
1874 | obj_aout_external_string_size (abfd), | |
b34976b6 | 1875 | FALSE))) |
252b5132 RH |
1876 | { |
1877 | free (cached); | |
b34976b6 | 1878 | return FALSE; |
252b5132 RH |
1879 | } |
1880 | ||
1881 | bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd); | |
1882 | ||
1883 | obj_aout_symbols (abfd) = cached; | |
1884 | ||
1885 | /* It is very likely that anybody who calls this function will not | |
1886 | want the external symbol information, so if it was allocated | |
1887 | because of our call to aout_get_external_symbols, we free it up | |
1888 | right away to save space. */ | |
1889 | if (old_external_syms == (struct external_nlist *) NULL | |
1890 | && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) | |
1891 | { | |
1892 | #ifdef USE_MMAP | |
1893 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
1894 | #else | |
1895 | free (obj_aout_external_syms (abfd)); | |
1896 | #endif | |
1897 | obj_aout_external_syms (abfd) = NULL; | |
1898 | } | |
1899 | ||
b34976b6 | 1900 | return TRUE; |
252b5132 RH |
1901 | } |
1902 | \f | |
1903 | /* We use a hash table when writing out symbols so that we only write | |
1904 | out a particular string once. This helps particularly when the | |
1905 | linker writes out stabs debugging entries, because each different | |
1906 | contributing object file tends to have many duplicate stabs | |
1907 | strings. | |
1908 | ||
1909 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it | |
1910 | if BFD_TRADITIONAL_FORMAT is set. */ | |
1911 | ||
1912 | static bfd_size_type add_to_stringtab | |
b34976b6 AM |
1913 | PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, bfd_boolean)); |
1914 | static bfd_boolean emit_stringtab | |
1915 | PARAMS ((bfd *, struct bfd_strtab_hash *)); | |
252b5132 RH |
1916 | |
1917 | /* Get the index of a string in a strtab, adding it if it is not | |
1918 | already present. */ | |
1919 | ||
1920 | static INLINE bfd_size_type | |
1921 | add_to_stringtab (abfd, tab, str, copy) | |
1922 | bfd *abfd; | |
1923 | struct bfd_strtab_hash *tab; | |
1924 | const char *str; | |
b34976b6 | 1925 | bfd_boolean copy; |
252b5132 | 1926 | { |
b34976b6 | 1927 | bfd_boolean hash; |
252b5132 RH |
1928 | bfd_size_type index; |
1929 | ||
1930 | /* An index of 0 always means the empty string. */ | |
1931 | if (str == 0 || *str == '\0') | |
1932 | return 0; | |
1933 | ||
1934 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx | |
1935 | doesn't understand a hashed string table. */ | |
b34976b6 | 1936 | hash = TRUE; |
252b5132 | 1937 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) |
b34976b6 | 1938 | hash = FALSE; |
252b5132 RH |
1939 | |
1940 | index = _bfd_stringtab_add (tab, str, hash, copy); | |
1941 | ||
1942 | if (index != (bfd_size_type) -1) | |
1943 | { | |
1944 | /* Add BYTES_IN_WORD to the return value to account for the | |
1945 | space taken up by the string table size. */ | |
1946 | index += BYTES_IN_WORD; | |
1947 | } | |
1948 | ||
1949 | return index; | |
1950 | } | |
1951 | ||
1952 | /* Write out a strtab. ABFD is already at the right location in the | |
1953 | file. */ | |
1954 | ||
b34976b6 | 1955 | static bfd_boolean |
252b5132 RH |
1956 | emit_stringtab (abfd, tab) |
1957 | register bfd *abfd; | |
1958 | struct bfd_strtab_hash *tab; | |
1959 | { | |
1960 | bfd_byte buffer[BYTES_IN_WORD]; | |
dc810e39 | 1961 | bfd_size_type amt = BYTES_IN_WORD; |
252b5132 RH |
1962 | |
1963 | /* The string table starts with the size. */ | |
1964 | PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer); | |
dc810e39 | 1965 | if (bfd_bwrite ((PTR) buffer, amt, abfd) != amt) |
b34976b6 | 1966 | return FALSE; |
252b5132 RH |
1967 | |
1968 | return _bfd_stringtab_emit (abfd, tab); | |
1969 | } | |
1970 | \f | |
b34976b6 | 1971 | bfd_boolean |
252b5132 RH |
1972 | NAME(aout,write_syms) (abfd) |
1973 | bfd *abfd; | |
1974 | { | |
1975 | unsigned int count ; | |
1976 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1977 | struct bfd_strtab_hash *strtab; | |
1978 | ||
1979 | strtab = _bfd_stringtab_init (); | |
1980 | if (strtab == NULL) | |
b34976b6 | 1981 | return FALSE; |
252b5132 RH |
1982 | |
1983 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1984 | { | |
1985 | asymbol *g = generic[count]; | |
1986 | bfd_size_type indx; | |
1987 | struct external_nlist nsp; | |
dc810e39 | 1988 | bfd_size_type amt; |
252b5132 | 1989 | |
b34976b6 | 1990 | indx = add_to_stringtab (abfd, strtab, g->name, FALSE); |
252b5132 RH |
1991 | if (indx == (bfd_size_type) -1) |
1992 | goto error_return; | |
1993 | PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx); | |
1994 | ||
923f08ff | 1995 | if (bfd_asymbol_flavour (g) == abfd->xvec->flavour) |
252b5132 | 1996 | { |
923f08ff AM |
1997 | H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc); |
1998 | H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other); | |
1999 | H_PUT_8 (abfd, aout_symbol (g)->type, nsp.e_type); | |
252b5132 RH |
2000 | } |
2001 | else | |
2002 | { | |
dc810e39 AM |
2003 | H_PUT_16 (abfd, 0, nsp.e_desc); |
2004 | H_PUT_8 (abfd, 0, nsp.e_other); | |
2005 | H_PUT_8 (abfd, 0, nsp.e_type); | |
252b5132 RH |
2006 | } |
2007 | ||
2008 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) | |
2009 | goto error_return; | |
2010 | ||
dc810e39 AM |
2011 | amt = EXTERNAL_NLIST_SIZE; |
2012 | if (bfd_bwrite ((PTR) &nsp, amt, abfd) != amt) | |
252b5132 RH |
2013 | goto error_return; |
2014 | ||
2015 | /* NB: `KEEPIT' currently overlays `udata.p', so set this only | |
2016 | here, at the end. */ | |
2017 | g->KEEPIT = count; | |
2018 | } | |
2019 | ||
2020 | if (! emit_stringtab (abfd, strtab)) | |
2021 | goto error_return; | |
2022 | ||
2023 | _bfd_stringtab_free (strtab); | |
2024 | ||
b34976b6 | 2025 | return TRUE; |
252b5132 RH |
2026 | |
2027 | error_return: | |
2028 | _bfd_stringtab_free (strtab); | |
b34976b6 | 2029 | return FALSE; |
252b5132 | 2030 | } |
252b5132 RH |
2031 | \f |
2032 | long | |
6cee3f79 | 2033 | NAME(aout,canonicalize_symtab) (abfd, location) |
252b5132 RH |
2034 | bfd *abfd; |
2035 | asymbol **location; | |
2036 | { | |
2037 | unsigned int counter = 0; | |
2038 | aout_symbol_type *symbase; | |
2039 | ||
beb0d161 | 2040 | if (!NAME(aout,slurp_symbol_table) (abfd)) |
252b5132 RH |
2041 | return -1; |
2042 | ||
923f08ff AM |
2043 | for (symbase = obj_aout_symbols (abfd); |
2044 | counter++ < bfd_get_symcount (abfd); | |
2045 | ) | |
2046 | *(location++) = (asymbol *) (symbase++); | |
252b5132 RH |
2047 | *location++ =0; |
2048 | return bfd_get_symcount (abfd); | |
2049 | } | |
252b5132 | 2050 | \f |
f7c33884 | 2051 | /* Standard reloc stuff. */ |
0ef5a5bd | 2052 | /* Output standard relocation information to a file in target byte order. */ |
252b5132 RH |
2053 | |
2054 | extern void NAME(aout,swap_std_reloc_out) | |
2055 | PARAMS ((bfd *, arelent *, struct reloc_std_external *)); | |
2056 | ||
2057 | void | |
2058 | NAME(aout,swap_std_reloc_out) (abfd, g, natptr) | |
2059 | bfd *abfd; | |
2060 | arelent *g; | |
2061 | struct reloc_std_external *natptr; | |
2062 | { | |
2063 | int r_index; | |
2064 | asymbol *sym = *(g->sym_ptr_ptr); | |
2065 | int r_extern; | |
2066 | unsigned int r_length; | |
2067 | int r_pcrel; | |
2068 | int r_baserel, r_jmptable, r_relative; | |
2069 | asection *output_section = sym->section->output_section; | |
2070 | ||
923f08ff | 2071 | PUT_WORD (abfd, g->address, natptr->r_address); |
252b5132 | 2072 | |
f7c33884 NC |
2073 | r_length = g->howto->size ; /* Size as a power of two. */ |
2074 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
252b5132 RH |
2075 | /* XXX This relies on relocs coming from a.out files. */ |
2076 | r_baserel = (g->howto->type & 8) != 0; | |
2077 | r_jmptable = (g->howto->type & 16) != 0; | |
2078 | r_relative = (g->howto->type & 32) != 0; | |
2079 | ||
2080 | #if 0 | |
2081 | /* For a standard reloc, the addend is in the object file. */ | |
2082 | r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; | |
2083 | #endif | |
2084 | ||
f7c33884 | 2085 | /* Name was clobbered by aout_write_syms to be symbol index. */ |
252b5132 RH |
2086 | |
2087 | /* If this relocation is relative to a symbol then set the | |
2088 | r_index to the symbols index, and the r_extern bit. | |
2089 | ||
2090 | Absolute symbols can come in in two ways, either as an offset | |
2091 | from the abs section, or as a symbol which has an abs value. | |
f7c33884 | 2092 | check for that here. */ |
252b5132 | 2093 | |
252b5132 RH |
2094 | if (bfd_is_com_section (output_section) |
2095 | || bfd_is_abs_section (output_section) | |
2096 | || bfd_is_und_section (output_section)) | |
2097 | { | |
2098 | if (bfd_abs_section_ptr->symbol == sym) | |
f7c33884 NC |
2099 | { |
2100 | /* Whoops, looked like an abs symbol, but is | |
2101 | really an offset from the abs section. */ | |
2102 | r_index = N_ABS; | |
2103 | r_extern = 0; | |
2104 | } | |
252b5132 | 2105 | else |
f7c33884 NC |
2106 | { |
2107 | /* Fill in symbol. */ | |
2108 | r_extern = 1; | |
2109 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
2110 | } | |
252b5132 RH |
2111 | } |
2112 | else | |
2113 | { | |
f7c33884 | 2114 | /* Just an ordinary section. */ |
252b5132 RH |
2115 | r_extern = 0; |
2116 | r_index = output_section->target_index; | |
2117 | } | |
2118 | ||
f7c33884 | 2119 | /* Now the fun stuff. */ |
923f08ff AM |
2120 | if (bfd_header_big_endian (abfd)) |
2121 | { | |
252b5132 RH |
2122 | natptr->r_index[0] = r_index >> 16; |
2123 | natptr->r_index[1] = r_index >> 8; | |
2124 | natptr->r_index[2] = r_index; | |
923f08ff AM |
2125 | natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) |
2126 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
2127 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
2128 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
2129 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
2130 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
2131 | } | |
2132 | else | |
2133 | { | |
2134 | natptr->r_index[2] = r_index >> 16; | |
2135 | natptr->r_index[1] = r_index >> 8; | |
2136 | natptr->r_index[0] = r_index; | |
2137 | natptr->r_type[0] = ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
2138 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
2139 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
2140 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
2141 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
2142 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
2143 | } | |
252b5132 RH |
2144 | } |
2145 | ||
f7c33884 | 2146 | /* Extended stuff. */ |
0ef5a5bd | 2147 | /* Output extended relocation information to a file in target byte order. */ |
252b5132 RH |
2148 | |
2149 | extern void NAME(aout,swap_ext_reloc_out) | |
2150 | PARAMS ((bfd *, arelent *, struct reloc_ext_external *)); | |
2151 | ||
2152 | void | |
2153 | NAME(aout,swap_ext_reloc_out) (abfd, g, natptr) | |
2154 | bfd *abfd; | |
2155 | arelent *g; | |
2156 | register struct reloc_ext_external *natptr; | |
2157 | { | |
2158 | int r_index; | |
2159 | int r_extern; | |
2160 | unsigned int r_type; | |
dc810e39 | 2161 | bfd_vma r_addend; |
252b5132 RH |
2162 | asymbol *sym = *(g->sym_ptr_ptr); |
2163 | asection *output_section = sym->section->output_section; | |
2164 | ||
2165 | PUT_WORD (abfd, g->address, natptr->r_address); | |
2166 | ||
2167 | r_type = (unsigned int) g->howto->type; | |
2168 | ||
2169 | r_addend = g->addend; | |
2170 | if ((sym->flags & BSF_SECTION_SYM) != 0) | |
2171 | r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma; | |
2172 | ||
2173 | /* If this relocation is relative to a symbol then set the | |
2174 | r_index to the symbols index, and the r_extern bit. | |
2175 | ||
2176 | Absolute symbols can come in in two ways, either as an offset | |
2177 | from the abs section, or as a symbol which has an abs value. | |
2178 | check for that here. */ | |
252b5132 RH |
2179 | if (bfd_is_abs_section (bfd_get_section (sym))) |
2180 | { | |
2181 | r_extern = 0; | |
2182 | r_index = N_ABS; | |
2183 | } | |
2184 | else if ((sym->flags & BSF_SECTION_SYM) == 0) | |
2185 | { | |
2186 | if (bfd_is_und_section (bfd_get_section (sym)) | |
2187 | || (sym->flags & BSF_GLOBAL) != 0) | |
2188 | r_extern = 1; | |
2189 | else | |
2190 | r_extern = 0; | |
2191 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; | |
2192 | } | |
2193 | else | |
2194 | { | |
f7c33884 | 2195 | /* Just an ordinary section. */ |
252b5132 RH |
2196 | r_extern = 0; |
2197 | r_index = output_section->target_index; | |
2198 | } | |
2199 | ||
f7c33884 | 2200 | /* Now the fun stuff. */ |
923f08ff AM |
2201 | if (bfd_header_big_endian (abfd)) |
2202 | { | |
2203 | natptr->r_index[0] = r_index >> 16; | |
2204 | natptr->r_index[1] = r_index >> 8; | |
2205 | natptr->r_index[2] = r_index; | |
2206 | natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
2207 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
2208 | } | |
2209 | else | |
2210 | { | |
2211 | natptr->r_index[2] = r_index >> 16; | |
2212 | natptr->r_index[1] = r_index >> 8; | |
2213 | natptr->r_index[0] = r_index; | |
2214 | natptr->r_type[0] = ((r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
2215 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE)); | |
2216 | } | |
252b5132 RH |
2217 | |
2218 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
2219 | } | |
2220 | ||
2221 | /* BFD deals internally with all things based from the section they're | |
2222 | in. so, something in 10 bytes into a text section with a base of | |
2223 | 50 would have a symbol (.text+10) and know .text vma was 50. | |
2224 | ||
2225 | Aout keeps all it's symbols based from zero, so the symbol would | |
2226 | contain 60. This macro subs the base of each section from the value | |
923f08ff AM |
2227 | to give the true offset from the section. */ |
2228 | ||
2229 | #define MOVE_ADDRESS(ad) \ | |
2230 | if (r_extern) \ | |
2231 | { \ | |
2232 | /* Undefined symbol. */ \ | |
2233 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
252b5132 | 2234 | cache_ptr->addend = ad; \ |
252b5132 | 2235 | } \ |
923f08ff AM |
2236 | else \ |
2237 | { \ | |
2238 | /* Defined, section relative. Replace symbol with pointer to \ | |
2239 | symbol which points to section. */ \ | |
2240 | switch (r_index) \ | |
2241 | { \ | |
2242 | case N_TEXT: \ | |
2243 | case N_TEXT | N_EXT: \ | |
2244 | cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \ | |
2245 | cache_ptr->addend = ad - su->textsec->vma; \ | |
2246 | break; \ | |
2247 | case N_DATA: \ | |
2248 | case N_DATA | N_EXT: \ | |
2249 | cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \ | |
2250 | cache_ptr->addend = ad - su->datasec->vma; \ | |
2251 | break; \ | |
2252 | case N_BSS: \ | |
2253 | case N_BSS | N_EXT: \ | |
2254 | cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \ | |
2255 | cache_ptr->addend = ad - su->bsssec->vma; \ | |
2256 | break; \ | |
2257 | default: \ | |
2258 | case N_ABS: \ | |
2259 | case N_ABS | N_EXT: \ | |
2260 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ | |
2261 | cache_ptr->addend = ad; \ | |
2262 | break; \ | |
2263 | } \ | |
2264 | } | |
252b5132 RH |
2265 | |
2266 | void | |
2267 | NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount) | |
2268 | bfd *abfd; | |
2269 | struct reloc_ext_external *bytes; | |
2270 | arelent *cache_ptr; | |
2271 | asymbol **symbols; | |
2272 | bfd_size_type symcount; | |
2273 | { | |
2274 | unsigned int r_index; | |
2275 | int r_extern; | |
2276 | unsigned int r_type; | |
2277 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2278 | ||
2279 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
2280 | ||
f7c33884 | 2281 | /* Now the fun stuff. */ |
923f08ff AM |
2282 | if (bfd_header_big_endian (abfd)) |
2283 | { | |
d45913a0 DA |
2284 | r_index = (((unsigned int) bytes->r_index[0] << 16) |
2285 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2286 | | bytes->r_index[2]); |
2287 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
2288 | r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
2289 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
2290 | } | |
2291 | else | |
2292 | { | |
d45913a0 DA |
2293 | r_index = (((unsigned int) bytes->r_index[2] << 16) |
2294 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2295 | | bytes->r_index[0]); |
2296 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
2297 | r_type = ((bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
2298 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
2299 | } | |
252b5132 RH |
2300 | |
2301 | cache_ptr->howto = howto_table_ext + r_type; | |
2302 | ||
2303 | /* Base relative relocs are always against the symbol table, | |
2304 | regardless of the setting of r_extern. r_extern just reflects | |
2305 | whether the symbol the reloc is against is local or global. */ | |
d45913a0 DA |
2306 | if (r_type == (unsigned int) RELOC_BASE10 |
2307 | || r_type == (unsigned int) RELOC_BASE13 | |
2308 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
2309 | r_extern = 1; |
2310 | ||
2311 | if (r_extern && r_index > symcount) | |
2312 | { | |
2313 | /* We could arrange to return an error, but it might be useful | |
2314 | to see the file even if it is bad. */ | |
2315 | r_extern = 0; | |
2316 | r_index = N_ABS; | |
2317 | } | |
2318 | ||
923f08ff | 2319 | MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend)); |
252b5132 RH |
2320 | } |
2321 | ||
2322 | void | |
2323 | NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount) | |
2324 | bfd *abfd; | |
2325 | struct reloc_std_external *bytes; | |
2326 | arelent *cache_ptr; | |
2327 | asymbol **symbols; | |
2328 | bfd_size_type symcount; | |
2329 | { | |
2330 | unsigned int r_index; | |
2331 | int r_extern; | |
2332 | unsigned int r_length; | |
2333 | int r_pcrel; | |
2334 | int r_baserel, r_jmptable, r_relative; | |
2335 | struct aoutdata *su = &(abfd->tdata.aout_data->a); | |
2336 | unsigned int howto_idx; | |
2337 | ||
dc810e39 | 2338 | cache_ptr->address = H_GET_32 (abfd, bytes->r_address); |
252b5132 | 2339 | |
f7c33884 | 2340 | /* Now the fun stuff. */ |
923f08ff AM |
2341 | if (bfd_header_big_endian (abfd)) |
2342 | { | |
d45913a0 DA |
2343 | r_index = (((unsigned int) bytes->r_index[0] << 16) |
2344 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2345 | | bytes->r_index[2]); |
2346 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
2347 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
2348 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
2349 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
2350 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
2351 | r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
2352 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
2353 | } | |
2354 | else | |
2355 | { | |
d45913a0 DA |
2356 | r_index = (((unsigned int) bytes->r_index[2] << 16) |
2357 | | ((unsigned int) bytes->r_index[1] << 8) | |
923f08ff AM |
2358 | | bytes->r_index[0]); |
2359 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
2360 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
2361 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
2362 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
2363 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
2364 | r_length = ((bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
2365 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
2366 | } | |
252b5132 | 2367 | |
923f08ff AM |
2368 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel |
2369 | + 16 * r_jmptable + 32 * r_relative); | |
252b5132 RH |
2370 | BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std)); |
2371 | cache_ptr->howto = howto_table_std + howto_idx; | |
2372 | BFD_ASSERT (cache_ptr->howto->type != (unsigned int) -1); | |
2373 | ||
2374 | /* Base relative relocs are always against the symbol table, | |
2375 | regardless of the setting of r_extern. r_extern just reflects | |
2376 | whether the symbol the reloc is against is local or global. */ | |
2377 | if (r_baserel) | |
2378 | r_extern = 1; | |
2379 | ||
2380 | if (r_extern && r_index > symcount) | |
2381 | { | |
2382 | /* We could arrange to return an error, but it might be useful | |
2383 | to see the file even if it is bad. */ | |
2384 | r_extern = 0; | |
2385 | r_index = N_ABS; | |
2386 | } | |
2387 | ||
923f08ff | 2388 | MOVE_ADDRESS (0); |
252b5132 RH |
2389 | } |
2390 | ||
2391 | /* Read and swap the relocs for a section. */ | |
2392 | ||
b34976b6 | 2393 | bfd_boolean |
252b5132 RH |
2394 | NAME(aout,slurp_reloc_table) (abfd, asect, symbols) |
2395 | bfd *abfd; | |
2396 | sec_ptr asect; | |
2397 | asymbol **symbols; | |
2398 | { | |
dc810e39 | 2399 | bfd_size_type count; |
252b5132 RH |
2400 | bfd_size_type reloc_size; |
2401 | PTR relocs; | |
2402 | arelent *reloc_cache; | |
2403 | size_t each_size; | |
2404 | unsigned int counter = 0; | |
2405 | arelent *cache_ptr; | |
dc810e39 | 2406 | bfd_size_type amt; |
252b5132 RH |
2407 | |
2408 | if (asect->relocation) | |
b34976b6 | 2409 | return TRUE; |
252b5132 RH |
2410 | |
2411 | if (asect->flags & SEC_CONSTRUCTOR) | |
b34976b6 | 2412 | return TRUE; |
252b5132 RH |
2413 | |
2414 | if (asect == obj_datasec (abfd)) | |
923f08ff | 2415 | reloc_size = exec_hdr (abfd)->a_drsize; |
252b5132 | 2416 | else if (asect == obj_textsec (abfd)) |
923f08ff | 2417 | reloc_size = exec_hdr (abfd)->a_trsize; |
252b5132 RH |
2418 | else if (asect == obj_bsssec (abfd)) |
2419 | reloc_size = 0; | |
2420 | else | |
2421 | { | |
2422 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 2423 | return FALSE; |
252b5132 RH |
2424 | } |
2425 | ||
2426 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) | |
b34976b6 | 2427 | return FALSE; |
252b5132 RH |
2428 | |
2429 | each_size = obj_reloc_entry_size (abfd); | |
2430 | ||
2431 | count = reloc_size / each_size; | |
2432 | ||
dc810e39 | 2433 | amt = count * sizeof (arelent); |
9bab7074 | 2434 | reloc_cache = (arelent *) bfd_zmalloc (amt); |
252b5132 | 2435 | if (reloc_cache == NULL && count != 0) |
b34976b6 | 2436 | return FALSE; |
252b5132 | 2437 | |
dc810e39 | 2438 | relocs = bfd_malloc (reloc_size); |
252b5132 RH |
2439 | if (relocs == NULL && reloc_size != 0) |
2440 | { | |
2441 | free (reloc_cache); | |
b34976b6 | 2442 | return FALSE; |
252b5132 RH |
2443 | } |
2444 | ||
dc810e39 | 2445 | if (bfd_bread (relocs, reloc_size, abfd) != reloc_size) |
252b5132 RH |
2446 | { |
2447 | free (relocs); | |
2448 | free (reloc_cache); | |
b34976b6 | 2449 | return FALSE; |
252b5132 RH |
2450 | } |
2451 | ||
2452 | cache_ptr = reloc_cache; | |
2453 | if (each_size == RELOC_EXT_SIZE) | |
2454 | { | |
dc810e39 | 2455 | struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs; |
252b5132 RH |
2456 | |
2457 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
1642229e | 2458 | MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols, |
dc810e39 | 2459 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
2460 | } |
2461 | else | |
2462 | { | |
dc810e39 | 2463 | struct reloc_std_external *rptr = (struct reloc_std_external *) relocs; |
252b5132 RH |
2464 | |
2465 | for (; counter < count; counter++, rptr++, cache_ptr++) | |
2466 | MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols, | |
dc810e39 | 2467 | (bfd_size_type) bfd_get_symcount (abfd)); |
252b5132 RH |
2468 | } |
2469 | ||
2470 | free (relocs); | |
2471 | ||
2472 | asect->relocation = reloc_cache; | |
2473 | asect->reloc_count = cache_ptr - reloc_cache; | |
2474 | ||
b34976b6 | 2475 | return TRUE; |
252b5132 RH |
2476 | } |
2477 | ||
2478 | /* Write out a relocation section into an object file. */ | |
2479 | ||
b34976b6 | 2480 | bfd_boolean |
252b5132 RH |
2481 | NAME(aout,squirt_out_relocs) (abfd, section) |
2482 | bfd *abfd; | |
2483 | asection *section; | |
2484 | { | |
2485 | arelent **generic; | |
2486 | unsigned char *native, *natptr; | |
2487 | size_t each_size; | |
2488 | ||
2489 | unsigned int count = section->reloc_count; | |
dc810e39 | 2490 | bfd_size_type natsize; |
252b5132 RH |
2491 | |
2492 | if (count == 0 || section->orelocation == NULL) | |
b34976b6 | 2493 | return TRUE; |
252b5132 RH |
2494 | |
2495 | each_size = obj_reloc_entry_size (abfd); | |
dc810e39 | 2496 | natsize = (bfd_size_type) each_size * count; |
252b5132 RH |
2497 | native = (unsigned char *) bfd_zalloc (abfd, natsize); |
2498 | if (!native) | |
b34976b6 | 2499 | return FALSE; |
252b5132 RH |
2500 | |
2501 | generic = section->orelocation; | |
2502 | ||
2503 | if (each_size == RELOC_EXT_SIZE) | |
2504 | { | |
2505 | for (natptr = native; | |
2506 | count != 0; | |
2507 | --count, natptr += each_size, ++generic) | |
1642229e HPN |
2508 | MY_swap_ext_reloc_out (abfd, *generic, |
2509 | (struct reloc_ext_external *) natptr); | |
252b5132 RH |
2510 | } |
2511 | else | |
2512 | { | |
2513 | for (natptr = native; | |
2514 | count != 0; | |
2515 | --count, natptr += each_size, ++generic) | |
923f08ff AM |
2516 | MY_swap_std_reloc_out (abfd, *generic, |
2517 | (struct reloc_std_external *) natptr); | |
252b5132 RH |
2518 | } |
2519 | ||
dc810e39 AM |
2520 | if (bfd_bwrite ((PTR) native, natsize, abfd) != natsize) |
2521 | { | |
923f08ff | 2522 | bfd_release (abfd, native); |
b34976b6 | 2523 | return FALSE; |
dc810e39 | 2524 | } |
252b5132 RH |
2525 | bfd_release (abfd, native); |
2526 | ||
b34976b6 | 2527 | return TRUE; |
252b5132 RH |
2528 | } |
2529 | ||
f7c33884 NC |
2530 | /* This is stupid. This function should be a boolean predicate. */ |
2531 | ||
252b5132 RH |
2532 | long |
2533 | NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols) | |
2534 | bfd *abfd; | |
2535 | sec_ptr section; | |
2536 | arelent **relptr; | |
2537 | asymbol **symbols; | |
2538 | { | |
2539 | arelent *tblptr = section->relocation; | |
2540 | unsigned int count; | |
2541 | ||
2542 | if (section == obj_bsssec (abfd)) | |
2543 | { | |
2544 | *relptr = NULL; | |
2545 | return 0; | |
2546 | } | |
2547 | ||
beb0d161 | 2548 | if (!(tblptr || NAME(aout,slurp_reloc_table) (abfd, section, symbols))) |
252b5132 RH |
2549 | return -1; |
2550 | ||
923f08ff AM |
2551 | if (section->flags & SEC_CONSTRUCTOR) |
2552 | { | |
2553 | arelent_chain *chain = section->constructor_chain; | |
2554 | for (count = 0; count < section->reloc_count; count ++) | |
2555 | { | |
2556 | *relptr ++ = &chain->relent; | |
2557 | chain = chain->next; | |
2558 | } | |
252b5132 | 2559 | } |
923f08ff AM |
2560 | else |
2561 | { | |
2562 | tblptr = section->relocation; | |
252b5132 | 2563 | |
923f08ff AM |
2564 | for (count = 0; count++ < section->reloc_count; ) |
2565 | { | |
2566 | *relptr++ = tblptr++; | |
2567 | } | |
2568 | } | |
252b5132 RH |
2569 | *relptr = 0; |
2570 | ||
2571 | return section->reloc_count; | |
2572 | } | |
2573 | ||
2574 | long | |
2575 | NAME(aout,get_reloc_upper_bound) (abfd, asect) | |
2576 | bfd *abfd; | |
2577 | sec_ptr asect; | |
2578 | { | |
923f08ff AM |
2579 | if (bfd_get_format (abfd) != bfd_object) |
2580 | { | |
2581 | bfd_set_error (bfd_error_invalid_operation); | |
2582 | return -1; | |
2583 | } | |
f7c33884 | 2584 | |
923f08ff | 2585 | if (asect->flags & SEC_CONSTRUCTOR) |
f7c33884 | 2586 | return (sizeof (arelent *) * (asect->reloc_count+1)); |
252b5132 RH |
2587 | |
2588 | if (asect == obj_datasec (abfd)) | |
2589 | return (sizeof (arelent *) | |
923f08ff | 2590 | * ((exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd)) |
252b5132 RH |
2591 | + 1)); |
2592 | ||
2593 | if (asect == obj_textsec (abfd)) | |
2594 | return (sizeof (arelent *) | |
923f08ff | 2595 | * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd)) |
252b5132 RH |
2596 | + 1)); |
2597 | ||
2598 | if (asect == obj_bsssec (abfd)) | |
2599 | return sizeof (arelent *); | |
2600 | ||
2601 | if (asect == obj_bsssec (abfd)) | |
2602 | return 0; | |
2603 | ||
2604 | bfd_set_error (bfd_error_invalid_operation); | |
2605 | return -1; | |
2606 | } | |
252b5132 RH |
2607 | \f |
2608 | long | |
2609 | NAME(aout,get_symtab_upper_bound) (abfd) | |
2610 | bfd *abfd; | |
2611 | { | |
beb0d161 | 2612 | if (!NAME(aout,slurp_symbol_table) (abfd)) |
252b5132 RH |
2613 | return -1; |
2614 | ||
2615 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
2616 | } | |
2617 | ||
1725a96e | 2618 | alent * |
252b5132 | 2619 | NAME(aout,get_lineno) (ignore_abfd, ignore_symbol) |
7442e600 ILT |
2620 | bfd *ignore_abfd ATTRIBUTE_UNUSED; |
2621 | asymbol *ignore_symbol ATTRIBUTE_UNUSED; | |
252b5132 | 2622 | { |
7442e600 | 2623 | return (alent *)NULL; |
252b5132 RH |
2624 | } |
2625 | ||
252b5132 RH |
2626 | void |
2627 | NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret) | |
7442e600 | 2628 | bfd *ignore_abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
2629 | asymbol *symbol; |
2630 | symbol_info *ret; | |
2631 | { | |
2632 | bfd_symbol_info (symbol, ret); | |
2633 | ||
2634 | if (ret->type == '?') | |
2635 | { | |
923f08ff | 2636 | int type_code = aout_symbol (symbol)->type & 0xff; |
252b5132 RH |
2637 | const char *stab_name = bfd_get_stab_name (type_code); |
2638 | static char buf[10]; | |
2639 | ||
2640 | if (stab_name == NULL) | |
2641 | { | |
e60b52c6 | 2642 | sprintf (buf, "(%d)", type_code); |
252b5132 RH |
2643 | stab_name = buf; |
2644 | } | |
2645 | ret->type = '-'; | |
2646 | ret->stab_type = type_code; | |
923f08ff AM |
2647 | ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff); |
2648 | ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff); | |
252b5132 RH |
2649 | ret->stab_name = stab_name; |
2650 | } | |
2651 | } | |
2652 | ||
252b5132 | 2653 | void |
60b89a18 L |
2654 | NAME(aout,print_symbol) (abfd, afile, symbol, how) |
2655 | bfd *abfd; | |
252b5132 RH |
2656 | PTR afile; |
2657 | asymbol *symbol; | |
2658 | bfd_print_symbol_type how; | |
2659 | { | |
2660 | FILE *file = (FILE *)afile; | |
2661 | ||
923f08ff | 2662 | switch (how) |
252b5132 | 2663 | { |
923f08ff AM |
2664 | case bfd_print_symbol_name: |
2665 | if (symbol->name) | |
2666 | fprintf (file,"%s", symbol->name); | |
2667 | break; | |
2668 | case bfd_print_symbol_more: | |
2669 | fprintf (file,"%4x %2x %2x", | |
2670 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2671 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2672 | (unsigned) (aout_symbol (symbol)->type)); | |
2673 | break; | |
2674 | case bfd_print_symbol_all: | |
2675 | { | |
2676 | const char *section_name = symbol->section->name; | |
252b5132 | 2677 | |
923f08ff | 2678 | bfd_print_symbol_vandf (abfd, (PTR)file, symbol); |
252b5132 | 2679 | |
923f08ff AM |
2680 | fprintf (file," %-5s %04x %02x %02x", |
2681 | section_name, | |
2682 | (unsigned) (aout_symbol (symbol)->desc & 0xffff), | |
2683 | (unsigned) (aout_symbol (symbol)->other & 0xff), | |
2684 | (unsigned) (aout_symbol (symbol)->type & 0xff)); | |
2685 | if (symbol->name) | |
2686 | fprintf (file," %s", symbol->name); | |
2687 | } | |
2688 | break; | |
252b5132 | 2689 | } |
252b5132 RH |
2690 | } |
2691 | ||
2692 | /* If we don't have to allocate more than 1MB to hold the generic | |
2693 | symbols, we use the generic minisymbol methord: it's faster, since | |
2694 | it only translates the symbols once, not multiple times. */ | |
2695 | #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) | |
2696 | ||
2697 | /* Read minisymbols. For minisymbols, we use the unmodified a.out | |
2698 | symbols. The minisymbol_to_symbol function translates these into | |
2699 | BFD asymbol structures. */ | |
2700 | ||
2701 | long | |
2702 | NAME(aout,read_minisymbols) (abfd, dynamic, minisymsp, sizep) | |
2703 | bfd *abfd; | |
b34976b6 | 2704 | bfd_boolean dynamic; |
252b5132 RH |
2705 | PTR *minisymsp; |
2706 | unsigned int *sizep; | |
2707 | { | |
2708 | if (dynamic) | |
2709 | { | |
2710 | /* We could handle the dynamic symbols here as well, but it's | |
2711 | easier to hand them off. */ | |
2712 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2713 | } | |
2714 | ||
2715 | if (! aout_get_external_symbols (abfd)) | |
2716 | return -1; | |
2717 | ||
2718 | if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2719 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2720 | ||
2721 | *minisymsp = (PTR) obj_aout_external_syms (abfd); | |
2722 | ||
2723 | /* By passing the external symbols back from this routine, we are | |
2724 | giving up control over the memory block. Clear | |
2725 | obj_aout_external_syms, so that we do not try to free it | |
2726 | ourselves. */ | |
2727 | obj_aout_external_syms (abfd) = NULL; | |
2728 | ||
2729 | *sizep = EXTERNAL_NLIST_SIZE; | |
2730 | return obj_aout_external_sym_count (abfd); | |
2731 | } | |
2732 | ||
2733 | /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an | |
2734 | unmodified a.out symbol. The SYM argument is a structure returned | |
2735 | by bfd_make_empty_symbol, which we fill in here. */ | |
2736 | ||
2737 | asymbol * | |
2738 | NAME(aout,minisymbol_to_symbol) (abfd, dynamic, minisym, sym) | |
2739 | bfd *abfd; | |
b34976b6 | 2740 | bfd_boolean dynamic; |
252b5132 RH |
2741 | const PTR minisym; |
2742 | asymbol *sym; | |
2743 | { | |
2744 | if (dynamic | |
2745 | || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2746 | return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); | |
2747 | ||
2748 | memset (sym, 0, sizeof (aout_symbol_type)); | |
2749 | ||
2750 | /* We call translate_symbol_table to translate a single symbol. */ | |
2751 | if (! (NAME(aout,translate_symbol_table) | |
2752 | (abfd, | |
2753 | (aout_symbol_type *) sym, | |
2754 | (struct external_nlist *) minisym, | |
2755 | (bfd_size_type) 1, | |
2756 | obj_aout_external_strings (abfd), | |
2757 | obj_aout_external_string_size (abfd), | |
b34976b6 | 2758 | FALSE))) |
252b5132 RH |
2759 | return NULL; |
2760 | ||
2761 | return sym; | |
2762 | } | |
2763 | ||
f7c33884 NC |
2764 | /* Provided a BFD, a section and an offset into the section, calculate |
2765 | and return the name of the source file and the line nearest to the | |
2766 | wanted location. */ | |
252b5132 | 2767 | |
b34976b6 | 2768 | bfd_boolean |
252b5132 RH |
2769 | NAME(aout,find_nearest_line) |
2770 | (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr) | |
2771 | bfd *abfd; | |
2772 | asection *section; | |
2773 | asymbol **symbols; | |
2774 | bfd_vma offset; | |
dc810e39 AM |
2775 | const char **filename_ptr; |
2776 | const char **functionname_ptr; | |
252b5132 RH |
2777 | unsigned int *line_ptr; |
2778 | { | |
f7c33884 | 2779 | /* Run down the file looking for the filename, function and linenumber. */ |
252b5132 | 2780 | asymbol **p; |
dc810e39 AM |
2781 | const char *directory_name = NULL; |
2782 | const char *main_file_name = NULL; | |
2783 | const char *current_file_name = NULL; | |
2784 | const char *line_file_name = NULL; /* Value of current_file_name at line number. */ | |
2785 | const char *line_directory_name = NULL; /* Value of directory_name at line number. */ | |
252b5132 RH |
2786 | bfd_vma low_line_vma = 0; |
2787 | bfd_vma low_func_vma = 0; | |
2788 | asymbol *func = 0; | |
dc810e39 | 2789 | bfd_size_type filelen, funclen; |
252b5132 RH |
2790 | char *buf; |
2791 | ||
2792 | *filename_ptr = abfd->filename; | |
2793 | *functionname_ptr = 0; | |
2794 | *line_ptr = 0; | |
f7c33884 | 2795 | |
923f08ff AM |
2796 | if (symbols != (asymbol **)NULL) |
2797 | { | |
2798 | for (p = symbols; *p; p++) | |
2799 | { | |
2800 | aout_symbol_type *q = (aout_symbol_type *) (*p); | |
2801 | next: | |
2802 | switch (q->type) | |
2803 | { | |
2804 | case N_TEXT: | |
2805 | /* If this looks like a file name symbol, and it comes after | |
2806 | the line number we have found so far, but before the | |
2807 | offset, then we have probably not found the right line | |
2808 | number. */ | |
2809 | if (q->symbol.value <= offset | |
2810 | && ((q->symbol.value > low_line_vma | |
2811 | && (line_file_name != NULL | |
2812 | || *line_ptr != 0)) | |
2813 | || (q->symbol.value > low_func_vma | |
2814 | && func != NULL))) | |
2815 | { | |
2816 | const char *symname; | |
252b5132 | 2817 | |
923f08ff AM |
2818 | symname = q->symbol.name; |
2819 | if (strcmp (symname + strlen (symname) - 2, ".o") == 0) | |
2820 | { | |
2821 | if (q->symbol.value > low_line_vma) | |
2822 | { | |
2823 | *line_ptr = 0; | |
2824 | line_file_name = NULL; | |
2825 | } | |
2826 | if (q->symbol.value > low_func_vma) | |
2827 | func = NULL; | |
2828 | } | |
2829 | } | |
2830 | break; | |
252b5132 | 2831 | |
923f08ff AM |
2832 | case N_SO: |
2833 | /* If this symbol is less than the offset, but greater than | |
2834 | the line number we have found so far, then we have not | |
2835 | found the right line number. */ | |
2836 | if (q->symbol.value <= offset) | |
2837 | { | |
2838 | if (q->symbol.value > low_line_vma) | |
2839 | { | |
2840 | *line_ptr = 0; | |
2841 | line_file_name = NULL; | |
2842 | } | |
2843 | if (q->symbol.value > low_func_vma) | |
2844 | func = NULL; | |
2845 | } | |
252b5132 | 2846 | |
923f08ff AM |
2847 | main_file_name = current_file_name = q->symbol.name; |
2848 | /* Look ahead to next symbol to check if that too is an N_SO. */ | |
2849 | p++; | |
2850 | if (*p == NULL) | |
2851 | break; | |
2852 | q = (aout_symbol_type *) (*p); | |
2853 | if (q->type != (int)N_SO) | |
2854 | goto next; | |
2855 | ||
2856 | /* Found a second N_SO First is directory; second is filename. */ | |
2857 | directory_name = current_file_name; | |
2858 | main_file_name = current_file_name = q->symbol.name; | |
2859 | if (obj_textsec (abfd) != section) | |
2860 | goto done; | |
2861 | break; | |
2862 | case N_SOL: | |
2863 | current_file_name = q->symbol.name; | |
2864 | break; | |
252b5132 | 2865 | |
923f08ff | 2866 | case N_SLINE: |
252b5132 | 2867 | |
923f08ff AM |
2868 | case N_DSLINE: |
2869 | case N_BSLINE: | |
2870 | /* We'll keep this if it resolves nearer than the one we have | |
2871 | already. */ | |
2872 | if (q->symbol.value >= low_line_vma | |
2873 | && q->symbol.value <= offset) | |
2874 | { | |
2875 | *line_ptr = q->desc; | |
2876 | low_line_vma = q->symbol.value; | |
2877 | line_file_name = current_file_name; | |
2878 | line_directory_name = directory_name; | |
2879 | } | |
2880 | break; | |
2881 | case N_FUN: | |
2882 | { | |
f7c33884 | 2883 | /* We'll keep this if it is nearer than the one we have already. */ |
923f08ff | 2884 | if (q->symbol.value >= low_func_vma && |
f7c33884 NC |
2885 | q->symbol.value <= offset) |
2886 | { | |
2887 | low_func_vma = q->symbol.value; | |
2888 | func = (asymbol *)q; | |
2889 | } | |
923f08ff AM |
2890 | else if (q->symbol.value > offset) |
2891 | goto done; | |
2892 | } | |
2893 | break; | |
2894 | } | |
252b5132 | 2895 | } |
252b5132 | 2896 | } |
252b5132 RH |
2897 | |
2898 | done: | |
2899 | if (*line_ptr != 0) | |
2900 | { | |
2901 | main_file_name = line_file_name; | |
2902 | directory_name = line_directory_name; | |
2903 | } | |
2904 | ||
2905 | if (main_file_name == NULL | |
5af11cab | 2906 | || IS_ABSOLUTE_PATH (main_file_name) |
252b5132 RH |
2907 | || directory_name == NULL) |
2908 | filelen = 0; | |
2909 | else | |
2910 | filelen = strlen (directory_name) + strlen (main_file_name); | |
f7c33884 | 2911 | |
252b5132 RH |
2912 | if (func == NULL) |
2913 | funclen = 0; | |
2914 | else | |
2915 | funclen = strlen (bfd_asymbol_name (func)); | |
2916 | ||
2917 | if (adata (abfd).line_buf != NULL) | |
2918 | free (adata (abfd).line_buf); | |
f7c33884 | 2919 | |
252b5132 RH |
2920 | if (filelen + funclen == 0) |
2921 | adata (abfd).line_buf = buf = NULL; | |
2922 | else | |
2923 | { | |
2924 | buf = (char *) bfd_malloc (filelen + funclen + 3); | |
2925 | adata (abfd).line_buf = buf; | |
2926 | if (buf == NULL) | |
b34976b6 | 2927 | return FALSE; |
252b5132 RH |
2928 | } |
2929 | ||
2930 | if (main_file_name != NULL) | |
2931 | { | |
5af11cab | 2932 | if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL) |
252b5132 RH |
2933 | *filename_ptr = main_file_name; |
2934 | else | |
2935 | { | |
2936 | sprintf (buf, "%s%s", directory_name, main_file_name); | |
2937 | *filename_ptr = buf; | |
2938 | buf += filelen + 1; | |
2939 | } | |
2940 | } | |
2941 | ||
2942 | if (func) | |
2943 | { | |
2944 | const char *function = func->name; | |
dc810e39 | 2945 | char *colon; |
252b5132 RH |
2946 | |
2947 | /* The caller expects a symbol name. We actually have a | |
2948 | function name, without the leading underscore. Put the | |
2949 | underscore back in, so that the caller gets a symbol name. */ | |
2950 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
2951 | strcpy (buf, function); | |
2952 | else | |
2953 | { | |
2954 | buf[0] = bfd_get_symbol_leading_char (abfd); | |
2955 | strcpy (buf + 1, function); | |
2956 | } | |
f7c33884 | 2957 | /* Have to remove : stuff. */ |
dc810e39 AM |
2958 | colon = strchr (buf, ':'); |
2959 | if (colon != NULL) | |
2960 | *colon = '\0'; | |
252b5132 RH |
2961 | *functionname_ptr = buf; |
2962 | } | |
2963 | ||
b34976b6 | 2964 | return TRUE; |
252b5132 RH |
2965 | } |
2966 | ||
252b5132 RH |
2967 | int |
2968 | NAME(aout,sizeof_headers) (abfd, execable) | |
2969 | bfd *abfd; | |
b34976b6 | 2970 | bfd_boolean execable ATTRIBUTE_UNUSED; |
252b5132 | 2971 | { |
923f08ff | 2972 | return adata (abfd).exec_bytes_size; |
252b5132 RH |
2973 | } |
2974 | ||
2975 | /* Free all information we have cached for this BFD. We can always | |
2976 | read it again later if we need it. */ | |
2977 | ||
b34976b6 | 2978 | bfd_boolean |
252b5132 RH |
2979 | NAME(aout,bfd_free_cached_info) (abfd) |
2980 | bfd *abfd; | |
2981 | { | |
2982 | asection *o; | |
2983 | ||
920581c5 L |
2984 | if (bfd_get_format (abfd) != bfd_object |
2985 | || abfd->tdata.aout_data == NULL) | |
b34976b6 | 2986 | return TRUE; |
252b5132 RH |
2987 | |
2988 | #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } | |
2989 | BFCI_FREE (obj_aout_symbols (abfd)); | |
2990 | #ifdef USE_MMAP | |
2991 | obj_aout_external_syms (abfd) = 0; | |
2992 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2993 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2994 | obj_aout_external_strings (abfd) = 0; | |
2995 | #else | |
2996 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2997 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
2998 | #endif | |
2999 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
3000 | BFCI_FREE (o->relocation); | |
3001 | #undef BFCI_FREE | |
3002 | ||
b34976b6 | 3003 | return TRUE; |
252b5132 RH |
3004 | } |
3005 | \f | |
3006 | /* a.out link code. */ | |
3007 | ||
b34976b6 | 3008 | static bfd_boolean aout_link_add_object_symbols |
252b5132 | 3009 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 AM |
3010 | static bfd_boolean aout_link_check_archive_element |
3011 | PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *)); | |
3012 | static bfd_boolean aout_link_free_symbols | |
3013 | PARAMS ((bfd *)); | |
3014 | static bfd_boolean aout_link_check_ar_symbols | |
3015 | PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *pneeded)); | |
3016 | static bfd_boolean aout_link_add_symbols | |
252b5132 RH |
3017 | PARAMS ((bfd *, struct bfd_link_info *)); |
3018 | ||
3019 | /* Routine to create an entry in an a.out link hash table. */ | |
3020 | ||
3021 | struct bfd_hash_entry * | |
3022 | NAME(aout,link_hash_newfunc) (entry, table, string) | |
3023 | struct bfd_hash_entry *entry; | |
3024 | struct bfd_hash_table *table; | |
3025 | const char *string; | |
3026 | { | |
3027 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
3028 | ||
3029 | /* Allocate the structure if it has not already been allocated by a | |
3030 | subclass. */ | |
3031 | if (ret == (struct aout_link_hash_entry *) NULL) | |
3032 | ret = ((struct aout_link_hash_entry *) | |
3033 | bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry))); | |
3034 | if (ret == (struct aout_link_hash_entry *) NULL) | |
3035 | return (struct bfd_hash_entry *) ret; | |
3036 | ||
3037 | /* Call the allocation method of the superclass. */ | |
3038 | ret = ((struct aout_link_hash_entry *) | |
3039 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
3040 | table, string)); | |
3041 | if (ret) | |
3042 | { | |
3043 | /* Set local fields. */ | |
b34976b6 | 3044 | ret->written = FALSE; |
252b5132 RH |
3045 | ret->indx = -1; |
3046 | } | |
3047 | ||
3048 | return (struct bfd_hash_entry *) ret; | |
3049 | } | |
3050 | ||
3051 | /* Initialize an a.out link hash table. */ | |
3052 | ||
b34976b6 | 3053 | bfd_boolean |
252b5132 RH |
3054 | NAME(aout,link_hash_table_init) (table, abfd, newfunc) |
3055 | struct aout_link_hash_table *table; | |
3056 | bfd *abfd; | |
b34976b6 AM |
3057 | struct bfd_hash_entry *(*newfunc) |
3058 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, | |
3059 | const char *)); | |
252b5132 RH |
3060 | { |
3061 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
3062 | } | |
3063 | ||
3064 | /* Create an a.out link hash table. */ | |
3065 | ||
3066 | struct bfd_link_hash_table * | |
3067 | NAME(aout,link_hash_table_create) (abfd) | |
3068 | bfd *abfd; | |
3069 | { | |
3070 | struct aout_link_hash_table *ret; | |
dc810e39 | 3071 | bfd_size_type amt = sizeof (struct aout_link_hash_table); |
252b5132 | 3072 | |
5ed6aba4 | 3073 | ret = (struct aout_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
3074 | if (ret == NULL) |
3075 | return (struct bfd_link_hash_table *) NULL; | |
5ed6aba4 | 3076 | |
252b5132 RH |
3077 | if (! NAME(aout,link_hash_table_init) (ret, abfd, |
3078 | NAME(aout,link_hash_newfunc))) | |
3079 | { | |
3080 | free (ret); | |
3081 | return (struct bfd_link_hash_table *) NULL; | |
3082 | } | |
3083 | return &ret->root; | |
3084 | } | |
3085 | ||
3086 | /* Given an a.out BFD, add symbols to the global hash table as | |
3087 | appropriate. */ | |
3088 | ||
b34976b6 | 3089 | bfd_boolean |
252b5132 RH |
3090 | NAME(aout,link_add_symbols) (abfd, info) |
3091 | bfd *abfd; | |
3092 | struct bfd_link_info *info; | |
3093 | { | |
3094 | switch (bfd_get_format (abfd)) | |
3095 | { | |
3096 | case bfd_object: | |
3097 | return aout_link_add_object_symbols (abfd, info); | |
3098 | case bfd_archive: | |
3099 | return _bfd_generic_link_add_archive_symbols | |
3100 | (abfd, info, aout_link_check_archive_element); | |
3101 | default: | |
3102 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 3103 | return FALSE; |
252b5132 RH |
3104 | } |
3105 | } | |
3106 | ||
3107 | /* Add symbols from an a.out object file. */ | |
3108 | ||
b34976b6 | 3109 | static bfd_boolean |
252b5132 RH |
3110 | aout_link_add_object_symbols (abfd, info) |
3111 | bfd *abfd; | |
3112 | struct bfd_link_info *info; | |
3113 | { | |
3114 | if (! aout_get_external_symbols (abfd)) | |
b34976b6 | 3115 | return FALSE; |
252b5132 | 3116 | if (! aout_link_add_symbols (abfd, info)) |
b34976b6 | 3117 | return FALSE; |
252b5132 RH |
3118 | if (! info->keep_memory) |
3119 | { | |
3120 | if (! aout_link_free_symbols (abfd)) | |
b34976b6 | 3121 | return FALSE; |
252b5132 | 3122 | } |
b34976b6 | 3123 | return TRUE; |
252b5132 RH |
3124 | } |
3125 | ||
3126 | /* Check a single archive element to see if we need to include it in | |
3127 | the link. *PNEEDED is set according to whether this element is | |
3128 | needed in the link or not. This is called from | |
3129 | _bfd_generic_link_add_archive_symbols. */ | |
3130 | ||
b34976b6 | 3131 | static bfd_boolean |
252b5132 RH |
3132 | aout_link_check_archive_element (abfd, info, pneeded) |
3133 | bfd *abfd; | |
3134 | struct bfd_link_info *info; | |
b34976b6 | 3135 | bfd_boolean *pneeded; |
252b5132 RH |
3136 | { |
3137 | if (! aout_get_external_symbols (abfd)) | |
b34976b6 | 3138 | return FALSE; |
252b5132 RH |
3139 | |
3140 | if (! aout_link_check_ar_symbols (abfd, info, pneeded)) | |
b34976b6 | 3141 | return FALSE; |
252b5132 RH |
3142 | |
3143 | if (*pneeded) | |
3144 | { | |
3145 | if (! aout_link_add_symbols (abfd, info)) | |
b34976b6 | 3146 | return FALSE; |
252b5132 RH |
3147 | } |
3148 | ||
3149 | if (! info->keep_memory || ! *pneeded) | |
3150 | { | |
3151 | if (! aout_link_free_symbols (abfd)) | |
b34976b6 | 3152 | return FALSE; |
252b5132 RH |
3153 | } |
3154 | ||
b34976b6 | 3155 | return TRUE; |
252b5132 RH |
3156 | } |
3157 | ||
3158 | /* Free up the internal symbols read from an a.out file. */ | |
3159 | ||
b34976b6 | 3160 | static bfd_boolean |
252b5132 RH |
3161 | aout_link_free_symbols (abfd) |
3162 | bfd *abfd; | |
3163 | { | |
3164 | if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) | |
3165 | { | |
3166 | #ifdef USE_MMAP | |
3167 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
3168 | #else | |
3169 | free ((PTR) obj_aout_external_syms (abfd)); | |
3170 | #endif | |
3171 | obj_aout_external_syms (abfd) = (struct external_nlist *) NULL; | |
3172 | } | |
3173 | if (obj_aout_external_strings (abfd) != (char *) NULL) | |
3174 | { | |
3175 | #ifdef USE_MMAP | |
3176 | bfd_free_window (&obj_aout_string_window (abfd)); | |
3177 | #else | |
3178 | free ((PTR) obj_aout_external_strings (abfd)); | |
3179 | #endif | |
3180 | obj_aout_external_strings (abfd) = (char *) NULL; | |
3181 | } | |
b34976b6 | 3182 | return TRUE; |
252b5132 RH |
3183 | } |
3184 | ||
3185 | /* Look through the internal symbols to see if this object file should | |
3186 | be included in the link. We should include this object file if it | |
3187 | defines any symbols which are currently undefined. If this object | |
3188 | file defines a common symbol, then we may adjust the size of the | |
3189 | known symbol but we do not include the object file in the link | |
3190 | (unless there is some other reason to include it). */ | |
3191 | ||
b34976b6 | 3192 | static bfd_boolean |
252b5132 RH |
3193 | aout_link_check_ar_symbols (abfd, info, pneeded) |
3194 | bfd *abfd; | |
3195 | struct bfd_link_info *info; | |
b34976b6 | 3196 | bfd_boolean *pneeded; |
252b5132 RH |
3197 | { |
3198 | register struct external_nlist *p; | |
3199 | struct external_nlist *pend; | |
3200 | char *strings; | |
3201 | ||
b34976b6 | 3202 | *pneeded = FALSE; |
252b5132 RH |
3203 | |
3204 | /* Look through all the symbols. */ | |
3205 | p = obj_aout_external_syms (abfd); | |
3206 | pend = p + obj_aout_external_sym_count (abfd); | |
3207 | strings = obj_aout_external_strings (abfd); | |
3208 | for (; p < pend; p++) | |
3209 | { | |
dc810e39 | 3210 | int type = H_GET_8 (abfd, p->e_type); |
252b5132 RH |
3211 | const char *name; |
3212 | struct bfd_link_hash_entry *h; | |
3213 | ||
3214 | /* Ignore symbols that are not externally visible. This is an | |
3215 | optimization only, as we check the type more thoroughly | |
3216 | below. */ | |
3217 | if (((type & N_EXT) == 0 | |
3218 | || (type & N_STAB) != 0 | |
3219 | || type == N_FN) | |
3220 | && type != N_WEAKA | |
3221 | && type != N_WEAKT | |
3222 | && type != N_WEAKD | |
3223 | && type != N_WEAKB) | |
3224 | { | |
3225 | if (type == N_WARNING | |
3226 | || type == N_INDR) | |
3227 | ++p; | |
3228 | continue; | |
3229 | } | |
3230 | ||
3231 | name = strings + GET_WORD (abfd, p->e_strx); | |
b34976b6 | 3232 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); |
252b5132 RH |
3233 | |
3234 | /* We are only interested in symbols that are currently | |
3235 | undefined or common. */ | |
3236 | if (h == (struct bfd_link_hash_entry *) NULL | |
3237 | || (h->type != bfd_link_hash_undefined | |
3238 | && h->type != bfd_link_hash_common)) | |
3239 | { | |
3240 | if (type == (N_INDR | N_EXT)) | |
3241 | ++p; | |
3242 | continue; | |
3243 | } | |
3244 | ||
3245 | if (type == (N_TEXT | N_EXT) | |
3246 | || type == (N_DATA | N_EXT) | |
3247 | || type == (N_BSS | N_EXT) | |
3248 | || type == (N_ABS | N_EXT) | |
3249 | || type == (N_INDR | N_EXT)) | |
3250 | { | |
3251 | /* This object file defines this symbol. We must link it | |
3252 | in. This is true regardless of whether the current | |
f7c33884 NC |
3253 | definition of the symbol is undefined or common. |
3254 | ||
3255 | If the current definition is common, we have a case in | |
3256 | which we have already seen an object file including: | |
252b5132 | 3257 | int a; |
f7c33884 | 3258 | and this object file from the archive includes: |
252b5132 | 3259 | int a = 5; |
f7c33884 | 3260 | In such a case, whether to include this object is target |
5c4491d3 | 3261 | dependant for backward compatibility. |
252b5132 RH |
3262 | |
3263 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
3264 | element if the symbol is defined in the .data section, | |
3265 | but not if it is defined in the .text section. That | |
f7c33884 NC |
3266 | seems a bit crazy to me, and it has not been implemented |
3267 | yet. However, it might be correct. */ | |
3268 | if (h->type == bfd_link_hash_common) | |
3269 | { | |
3270 | int skip = 0; | |
3271 | ||
3272 | switch (info->common_skip_ar_aymbols) | |
3273 | { | |
3274 | case bfd_link_common_skip_text: | |
3275 | skip = (type == (N_TEXT | N_EXT)); | |
3276 | break; | |
3277 | case bfd_link_common_skip_data: | |
3278 | skip = (type == (N_DATA | N_EXT)); | |
3279 | break; | |
3280 | default: | |
3281 | case bfd_link_common_skip_all: | |
3282 | skip = 1; | |
3283 | break; | |
3284 | } | |
3285 | ||
3286 | if (skip) | |
3287 | continue; | |
3288 | } | |
3289 | ||
252b5132 | 3290 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) |
b34976b6 AM |
3291 | return FALSE; |
3292 | *pneeded = TRUE; | |
3293 | return TRUE; | |
252b5132 RH |
3294 | } |
3295 | ||
3296 | if (type == (N_UNDF | N_EXT)) | |
3297 | { | |
3298 | bfd_vma value; | |
3299 | ||
3300 | value = GET_WORD (abfd, p->e_value); | |
3301 | if (value != 0) | |
3302 | { | |
3303 | /* This symbol is common in the object from the archive | |
3304 | file. */ | |
3305 | if (h->type == bfd_link_hash_undefined) | |
3306 | { | |
3307 | bfd *symbfd; | |
3308 | unsigned int power; | |
3309 | ||
3310 | symbfd = h->u.undef.abfd; | |
3311 | if (symbfd == (bfd *) NULL) | |
3312 | { | |
3313 | /* This symbol was created as undefined from | |
3314 | outside BFD. We assume that we should link | |
3315 | in the object file. This is done for the -u | |
3316 | option in the linker. */ | |
3317 | if (! (*info->callbacks->add_archive_element) (info, | |
3318 | abfd, | |
3319 | name)) | |
b34976b6 AM |
3320 | return FALSE; |
3321 | *pneeded = TRUE; | |
3322 | return TRUE; | |
252b5132 RH |
3323 | } |
3324 | /* Turn the current link symbol into a common | |
3325 | symbol. It is already on the undefs list. */ | |
3326 | h->type = bfd_link_hash_common; | |
3327 | h->u.c.p = ((struct bfd_link_hash_common_entry *) | |
3328 | bfd_hash_allocate (&info->hash->table, | |
3329 | sizeof (struct bfd_link_hash_common_entry))); | |
3330 | if (h->u.c.p == NULL) | |
b34976b6 | 3331 | return FALSE; |
252b5132 RH |
3332 | |
3333 | h->u.c.size = value; | |
3334 | ||
3335 | /* FIXME: This isn't quite right. The maximum | |
3336 | alignment of a common symbol should be set by the | |
3337 | architecture of the output file, not of the input | |
3338 | file. */ | |
3339 | power = bfd_log2 (value); | |
3340 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
3341 | power = bfd_get_arch_info (abfd)->section_align_power; | |
3342 | h->u.c.p->alignment_power = power; | |
3343 | ||
3344 | h->u.c.p->section = bfd_make_section_old_way (symbfd, | |
3345 | "COMMON"); | |
3346 | } | |
3347 | else | |
3348 | { | |
3349 | /* Adjust the size of the common symbol if | |
3350 | necessary. */ | |
3351 | if (value > h->u.c.size) | |
3352 | h->u.c.size = value; | |
3353 | } | |
3354 | } | |
3355 | } | |
3356 | ||
3357 | if (type == N_WEAKA | |
3358 | || type == N_WEAKT | |
3359 | || type == N_WEAKD | |
3360 | || type == N_WEAKB) | |
3361 | { | |
3362 | /* This symbol is weak but defined. We must pull it in if | |
3363 | the current link symbol is undefined, but we don't want | |
3364 | it if the current link symbol is common. */ | |
3365 | if (h->type == bfd_link_hash_undefined) | |
3366 | { | |
3367 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) | |
b34976b6 AM |
3368 | return FALSE; |
3369 | *pneeded = TRUE; | |
3370 | return TRUE; | |
252b5132 RH |
3371 | } |
3372 | } | |
3373 | } | |
3374 | ||
3375 | /* We do not need this object file. */ | |
b34976b6 | 3376 | return TRUE; |
252b5132 RH |
3377 | } |
3378 | ||
3379 | /* Add all symbols from an object file to the hash table. */ | |
3380 | ||
b34976b6 | 3381 | static bfd_boolean |
252b5132 RH |
3382 | aout_link_add_symbols (abfd, info) |
3383 | bfd *abfd; | |
3384 | struct bfd_link_info *info; | |
3385 | { | |
b34976b6 AM |
3386 | bfd_boolean (*add_one_symbol) |
3387 | PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword, asection *, | |
3388 | bfd_vma, const char *, bfd_boolean, bfd_boolean, | |
3389 | struct bfd_link_hash_entry **)); | |
252b5132 RH |
3390 | struct external_nlist *syms; |
3391 | bfd_size_type sym_count; | |
3392 | char *strings; | |
b34976b6 | 3393 | bfd_boolean copy; |
252b5132 RH |
3394 | struct aout_link_hash_entry **sym_hash; |
3395 | register struct external_nlist *p; | |
3396 | struct external_nlist *pend; | |
dc810e39 | 3397 | bfd_size_type amt; |
252b5132 RH |
3398 | |
3399 | syms = obj_aout_external_syms (abfd); | |
3400 | sym_count = obj_aout_external_sym_count (abfd); | |
3401 | strings = obj_aout_external_strings (abfd); | |
3402 | if (info->keep_memory) | |
b34976b6 | 3403 | copy = FALSE; |
252b5132 | 3404 | else |
b34976b6 | 3405 | copy = TRUE; |
252b5132 RH |
3406 | |
3407 | if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) | |
3408 | { | |
3409 | if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) | |
3410 | (abfd, info, &syms, &sym_count, &strings))) | |
b34976b6 | 3411 | return FALSE; |
252b5132 RH |
3412 | } |
3413 | ||
3414 | /* We keep a list of the linker hash table entries that correspond | |
3415 | to particular symbols. We could just look them up in the hash | |
3416 | table, but keeping the list is more efficient. Perhaps this | |
3417 | should be conditional on info->keep_memory. */ | |
dc810e39 AM |
3418 | amt = sym_count * sizeof (struct aout_link_hash_entry *); |
3419 | sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt); | |
252b5132 | 3420 | if (sym_hash == NULL && sym_count != 0) |
b34976b6 | 3421 | return FALSE; |
252b5132 RH |
3422 | obj_aout_sym_hashes (abfd) = sym_hash; |
3423 | ||
3424 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; | |
3425 | if (add_one_symbol == NULL) | |
3426 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
3427 | ||
3428 | p = syms; | |
3429 | pend = p + sym_count; | |
3430 | for (; p < pend; p++, sym_hash++) | |
3431 | { | |
3432 | int type; | |
3433 | const char *name; | |
3434 | bfd_vma value; | |
3435 | asection *section; | |
3436 | flagword flags; | |
3437 | const char *string; | |
3438 | ||
3439 | *sym_hash = NULL; | |
3440 | ||
dc810e39 | 3441 | type = H_GET_8 (abfd, p->e_type); |
252b5132 RH |
3442 | |
3443 | /* Ignore debugging symbols. */ | |
3444 | if ((type & N_STAB) != 0) | |
3445 | continue; | |
3446 | ||
3447 | name = strings + GET_WORD (abfd, p->e_strx); | |
3448 | value = GET_WORD (abfd, p->e_value); | |
3449 | flags = BSF_GLOBAL; | |
3450 | string = NULL; | |
3451 | switch (type) | |
3452 | { | |
3453 | default: | |
3454 | abort (); | |
3455 | ||
3456 | case N_UNDF: | |
3457 | case N_ABS: | |
3458 | case N_TEXT: | |
3459 | case N_DATA: | |
3460 | case N_BSS: | |
3461 | case N_FN_SEQ: | |
3462 | case N_COMM: | |
3463 | case N_SETV: | |
3464 | case N_FN: | |
3465 | /* Ignore symbols that are not externally visible. */ | |
3466 | continue; | |
3467 | case N_INDR: | |
3468 | /* Ignore local indirect symbol. */ | |
3469 | ++p; | |
3470 | ++sym_hash; | |
3471 | continue; | |
3472 | ||
3473 | case N_UNDF | N_EXT: | |
3474 | if (value == 0) | |
3475 | { | |
3476 | section = bfd_und_section_ptr; | |
3477 | flags = 0; | |
3478 | } | |
3479 | else | |
3480 | section = bfd_com_section_ptr; | |
3481 | break; | |
3482 | case N_ABS | N_EXT: | |
3483 | section = bfd_abs_section_ptr; | |
3484 | break; | |
3485 | case N_TEXT | N_EXT: | |
3486 | section = obj_textsec (abfd); | |
3487 | value -= bfd_get_section_vma (abfd, section); | |
3488 | break; | |
3489 | case N_DATA | N_EXT: | |
3490 | case N_SETV | N_EXT: | |
3491 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
3492 | translate_from_native_sym_flags. */ | |
3493 | section = obj_datasec (abfd); | |
3494 | value -= bfd_get_section_vma (abfd, section); | |
3495 | break; | |
3496 | case N_BSS | N_EXT: | |
3497 | section = obj_bsssec (abfd); | |
3498 | value -= bfd_get_section_vma (abfd, section); | |
3499 | break; | |
3500 | case N_INDR | N_EXT: | |
3501 | /* An indirect symbol. The next symbol is the symbol | |
3502 | which this one really is. */ | |
3503 | BFD_ASSERT (p + 1 < pend); | |
3504 | ++p; | |
3505 | string = strings + GET_WORD (abfd, p->e_strx); | |
3506 | section = bfd_ind_section_ptr; | |
3507 | flags |= BSF_INDIRECT; | |
3508 | break; | |
3509 | case N_COMM | N_EXT: | |
3510 | section = bfd_com_section_ptr; | |
3511 | break; | |
3512 | case N_SETA: case N_SETA | N_EXT: | |
3513 | section = bfd_abs_section_ptr; | |
3514 | flags |= BSF_CONSTRUCTOR; | |
3515 | break; | |
3516 | case N_SETT: case N_SETT | N_EXT: | |
3517 | section = obj_textsec (abfd); | |
3518 | flags |= BSF_CONSTRUCTOR; | |
3519 | value -= bfd_get_section_vma (abfd, section); | |
3520 | break; | |
3521 | case N_SETD: case N_SETD | N_EXT: | |
3522 | section = obj_datasec (abfd); | |
3523 | flags |= BSF_CONSTRUCTOR; | |
3524 | value -= bfd_get_section_vma (abfd, section); | |
3525 | break; | |
3526 | case N_SETB: case N_SETB | N_EXT: | |
3527 | section = obj_bsssec (abfd); | |
3528 | flags |= BSF_CONSTRUCTOR; | |
3529 | value -= bfd_get_section_vma (abfd, section); | |
3530 | break; | |
3531 | case N_WARNING: | |
3532 | /* A warning symbol. The next symbol is the one to warn | |
3533 | about. */ | |
3534 | BFD_ASSERT (p + 1 < pend); | |
3535 | ++p; | |
3536 | string = name; | |
3537 | name = strings + GET_WORD (abfd, p->e_strx); | |
3538 | section = bfd_und_section_ptr; | |
3539 | flags |= BSF_WARNING; | |
3540 | break; | |
3541 | case N_WEAKU: | |
3542 | section = bfd_und_section_ptr; | |
3543 | flags = BSF_WEAK; | |
3544 | break; | |
3545 | case N_WEAKA: | |
3546 | section = bfd_abs_section_ptr; | |
3547 | flags = BSF_WEAK; | |
3548 | break; | |
3549 | case N_WEAKT: | |
3550 | section = obj_textsec (abfd); | |
3551 | value -= bfd_get_section_vma (abfd, section); | |
3552 | flags = BSF_WEAK; | |
3553 | break; | |
3554 | case N_WEAKD: | |
3555 | section = obj_datasec (abfd); | |
3556 | value -= bfd_get_section_vma (abfd, section); | |
3557 | flags = BSF_WEAK; | |
3558 | break; | |
3559 | case N_WEAKB: | |
3560 | section = obj_bsssec (abfd); | |
3561 | value -= bfd_get_section_vma (abfd, section); | |
3562 | flags = BSF_WEAK; | |
3563 | break; | |
3564 | } | |
3565 | ||
3566 | if (! ((*add_one_symbol) | |
b34976b6 | 3567 | (info, abfd, name, flags, section, value, string, copy, FALSE, |
252b5132 | 3568 | (struct bfd_link_hash_entry **) sym_hash))) |
b34976b6 | 3569 | return FALSE; |
252b5132 RH |
3570 | |
3571 | /* Restrict the maximum alignment of a common symbol based on | |
3572 | the architecture, since a.out has no way to represent | |
3573 | alignment requirements of a section in a .o file. FIXME: | |
3574 | This isn't quite right: it should use the architecture of the | |
3575 | output file, not the input files. */ | |
3576 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
3577 | && ((*sym_hash)->root.u.c.p->alignment_power > | |
3578 | bfd_get_arch_info (abfd)->section_align_power)) | |
3579 | (*sym_hash)->root.u.c.p->alignment_power = | |
3580 | bfd_get_arch_info (abfd)->section_align_power; | |
3581 | ||
3582 | /* If this is a set symbol, and we are not building sets, then | |
3583 | it is possible for the hash entry to not have been set. In | |
3584 | such a case, treat the symbol as not globally defined. */ | |
3585 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
3586 | { | |
3587 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
3588 | *sym_hash = NULL; | |
3589 | } | |
3590 | ||
3591 | if (type == (N_INDR | N_EXT) || type == N_WARNING) | |
3592 | ++sym_hash; | |
3593 | } | |
3594 | ||
b34976b6 | 3595 | return TRUE; |
252b5132 RH |
3596 | } |
3597 | \f | |
3598 | /* A hash table used for header files with N_BINCL entries. */ | |
3599 | ||
3600 | struct aout_link_includes_table | |
3601 | { | |
3602 | struct bfd_hash_table root; | |
3603 | }; | |
3604 | ||
3605 | /* A linked list of totals that we have found for a particular header | |
3606 | file. */ | |
3607 | ||
3608 | struct aout_link_includes_totals | |
3609 | { | |
3610 | struct aout_link_includes_totals *next; | |
3611 | bfd_vma total; | |
3612 | }; | |
3613 | ||
3614 | /* An entry in the header file hash table. */ | |
3615 | ||
3616 | struct aout_link_includes_entry | |
3617 | { | |
3618 | struct bfd_hash_entry root; | |
3619 | /* List of totals we have found for this file. */ | |
3620 | struct aout_link_includes_totals *totals; | |
3621 | }; | |
3622 | ||
3623 | /* Look up an entry in an the header file hash table. */ | |
3624 | ||
923f08ff AM |
3625 | #define aout_link_includes_lookup(table, string, create, copy) \ |
3626 | ((struct aout_link_includes_entry *) \ | |
252b5132 RH |
3627 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) |
3628 | ||
3629 | /* During the final link step we need to pass around a bunch of | |
3630 | information, so we do it in an instance of this structure. */ | |
3631 | ||
3632 | struct aout_final_link_info | |
3633 | { | |
3634 | /* General link information. */ | |
3635 | struct bfd_link_info *info; | |
3636 | /* Output bfd. */ | |
3637 | bfd *output_bfd; | |
3638 | /* Reloc file positions. */ | |
3639 | file_ptr treloff, dreloff; | |
3640 | /* File position of symbols. */ | |
3641 | file_ptr symoff; | |
3642 | /* String table. */ | |
3643 | struct bfd_strtab_hash *strtab; | |
3644 | /* Header file hash table. */ | |
3645 | struct aout_link_includes_table includes; | |
3646 | /* A buffer large enough to hold the contents of any section. */ | |
3647 | bfd_byte *contents; | |
3648 | /* A buffer large enough to hold the relocs of any section. */ | |
3649 | PTR relocs; | |
3650 | /* A buffer large enough to hold the symbol map of any input BFD. */ | |
3651 | int *symbol_map; | |
3652 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
3653 | struct external_nlist *output_syms; | |
3654 | }; | |
3655 | ||
3656 | static struct bfd_hash_entry *aout_link_includes_newfunc | |
3657 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
b34976b6 | 3658 | static bfd_boolean aout_link_input_bfd |
252b5132 | 3659 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); |
b34976b6 | 3660 | static bfd_boolean aout_link_write_symbols |
252b5132 | 3661 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); |
b34976b6 | 3662 | static bfd_boolean aout_link_write_other_symbol |
252b5132 | 3663 | PARAMS ((struct aout_link_hash_entry *, PTR)); |
b34976b6 | 3664 | static bfd_boolean aout_link_input_section |
252b5132 RH |
3665 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, |
3666 | asection *input_section, file_ptr *reloff_ptr, | |
3667 | bfd_size_type rel_size)); | |
b34976b6 | 3668 | static bfd_boolean aout_link_input_section_std |
252b5132 RH |
3669 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, |
3670 | asection *input_section, struct reloc_std_external *, | |
3671 | bfd_size_type rel_size, bfd_byte *contents)); | |
b34976b6 | 3672 | static bfd_boolean aout_link_input_section_ext |
252b5132 RH |
3673 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, |
3674 | asection *input_section, struct reloc_ext_external *, | |
3675 | bfd_size_type rel_size, bfd_byte *contents)); | |
3676 | static INLINE asection *aout_reloc_index_to_section | |
3677 | PARAMS ((bfd *, int)); | |
b34976b6 | 3678 | static bfd_boolean aout_link_reloc_link_order |
252b5132 RH |
3679 | PARAMS ((struct aout_final_link_info *, asection *, |
3680 | struct bfd_link_order *)); | |
3681 | ||
3682 | /* The function to create a new entry in the header file hash table. */ | |
3683 | ||
3684 | static struct bfd_hash_entry * | |
3685 | aout_link_includes_newfunc (entry, table, string) | |
3686 | struct bfd_hash_entry *entry; | |
3687 | struct bfd_hash_table *table; | |
3688 | const char *string; | |
3689 | { | |
3690 | struct aout_link_includes_entry *ret = | |
3691 | (struct aout_link_includes_entry *) entry; | |
3692 | ||
3693 | /* Allocate the structure if it has not already been allocated by a | |
3694 | subclass. */ | |
3695 | if (ret == (struct aout_link_includes_entry *) NULL) | |
3696 | ret = ((struct aout_link_includes_entry *) | |
3697 | bfd_hash_allocate (table, | |
3698 | sizeof (struct aout_link_includes_entry))); | |
3699 | if (ret == (struct aout_link_includes_entry *) NULL) | |
3700 | return (struct bfd_hash_entry *) ret; | |
3701 | ||
3702 | /* Call the allocation method of the superclass. */ | |
3703 | ret = ((struct aout_link_includes_entry *) | |
3704 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
3705 | if (ret) | |
3706 | { | |
3707 | /* Set local fields. */ | |
3708 | ret->totals = NULL; | |
3709 | } | |
3710 | ||
3711 | return (struct bfd_hash_entry *) ret; | |
3712 | } | |
3713 | ||
3714 | /* Do the final link step. This is called on the output BFD. The | |
3715 | INFO structure should point to a list of BFDs linked through the | |
3716 | link_next field which can be used to find each BFD which takes part | |
3717 | in the output. Also, each section in ABFD should point to a list | |
3718 | of bfd_link_order structures which list all the input sections for | |
3719 | the output section. */ | |
3720 | ||
b34976b6 | 3721 | bfd_boolean |
252b5132 RH |
3722 | NAME(aout,final_link) (abfd, info, callback) |
3723 | bfd *abfd; | |
3724 | struct bfd_link_info *info; | |
3725 | void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *)); | |
3726 | { | |
3727 | struct aout_final_link_info aout_info; | |
b34976b6 | 3728 | bfd_boolean includes_hash_initialized = FALSE; |
252b5132 RH |
3729 | register bfd *sub; |
3730 | bfd_size_type trsize, drsize; | |
dc810e39 AM |
3731 | bfd_size_type max_contents_size; |
3732 | bfd_size_type max_relocs_size; | |
3733 | bfd_size_type max_sym_count; | |
252b5132 RH |
3734 | bfd_size_type text_size; |
3735 | file_ptr text_end; | |
3736 | register struct bfd_link_order *p; | |
3737 | asection *o; | |
b34976b6 | 3738 | bfd_boolean have_link_order_relocs; |
252b5132 RH |
3739 | |
3740 | if (info->shared) | |
3741 | abfd->flags |= DYNAMIC; | |
3742 | ||
3743 | aout_info.info = info; | |
3744 | aout_info.output_bfd = abfd; | |
3745 | aout_info.contents = NULL; | |
3746 | aout_info.relocs = NULL; | |
3747 | aout_info.symbol_map = NULL; | |
3748 | aout_info.output_syms = NULL; | |
3749 | ||
3750 | if (! bfd_hash_table_init_n (&aout_info.includes.root, | |
3751 | aout_link_includes_newfunc, | |
3752 | 251)) | |
3753 | goto error_return; | |
b34976b6 | 3754 | includes_hash_initialized = TRUE; |
252b5132 RH |
3755 | |
3756 | /* Figure out the largest section size. Also, if generating | |
1049f94e | 3757 | relocatable output, count the relocs. */ |
252b5132 RH |
3758 | trsize = 0; |
3759 | drsize = 0; | |
3760 | max_contents_size = 0; | |
3761 | max_relocs_size = 0; | |
3762 | max_sym_count = 0; | |
3763 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
3764 | { | |
dc810e39 | 3765 | bfd_size_type sz; |
252b5132 | 3766 | |
1049f94e | 3767 | if (info->relocatable) |
252b5132 RH |
3768 | { |
3769 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) | |
3770 | { | |
3771 | trsize += exec_hdr (sub)->a_trsize; | |
3772 | drsize += exec_hdr (sub)->a_drsize; | |
3773 | } | |
3774 | else | |
3775 | { | |
3776 | /* FIXME: We need to identify the .text and .data sections | |
3777 | and call get_reloc_upper_bound and canonicalize_reloc to | |
3778 | work out the number of relocs needed, and then multiply | |
3779 | by the reloc size. */ | |
3780 | (*_bfd_error_handler) | |
1049f94e | 3781 | (_("%s: relocatable link from %s to %s not supported"), |
252b5132 RH |
3782 | bfd_get_filename (abfd), |
3783 | sub->xvec->name, abfd->xvec->name); | |
3784 | bfd_set_error (bfd_error_invalid_operation); | |
3785 | goto error_return; | |
3786 | } | |
3787 | } | |
3788 | ||
3789 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) | |
3790 | { | |
eea6121a | 3791 | sz = obj_textsec (sub)->size; |
252b5132 RH |
3792 | if (sz > max_contents_size) |
3793 | max_contents_size = sz; | |
eea6121a | 3794 | sz = obj_datasec (sub)->size; |
252b5132 RH |
3795 | if (sz > max_contents_size) |
3796 | max_contents_size = sz; | |
3797 | ||
3798 | sz = exec_hdr (sub)->a_trsize; | |
3799 | if (sz > max_relocs_size) | |
3800 | max_relocs_size = sz; | |
3801 | sz = exec_hdr (sub)->a_drsize; | |
3802 | if (sz > max_relocs_size) | |
3803 | max_relocs_size = sz; | |
3804 | ||
3805 | sz = obj_aout_external_sym_count (sub); | |
3806 | if (sz > max_sym_count) | |
3807 | max_sym_count = sz; | |
3808 | } | |
3809 | } | |
3810 | ||
1049f94e | 3811 | if (info->relocatable) |
252b5132 RH |
3812 | { |
3813 | if (obj_textsec (abfd) != (asection *) NULL) | |
3814 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
3815 | ->link_order_head) | |
3816 | * obj_reloc_entry_size (abfd)); | |
3817 | if (obj_datasec (abfd) != (asection *) NULL) | |
3818 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
3819 | ->link_order_head) | |
3820 | * obj_reloc_entry_size (abfd)); | |
3821 | } | |
3822 | ||
3823 | exec_hdr (abfd)->a_trsize = trsize; | |
3824 | exec_hdr (abfd)->a_drsize = drsize; | |
3825 | ||
3826 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); | |
3827 | ||
3828 | /* Adjust the section sizes and vmas according to the magic number. | |
3829 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
3830 | filepos for each section. */ | |
3831 | if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) | |
3832 | goto error_return; | |
3833 | ||
3834 | /* The relocation and symbol file positions differ among a.out | |
3835 | targets. We are passed a callback routine from the backend | |
3836 | specific code to handle this. | |
3837 | FIXME: At this point we do not know how much space the symbol | |
3838 | table will require. This will not work for any (nonstandard) | |
3839 | a.out target that needs to know the symbol table size before it | |
3840 | can compute the relocation file positions. This may or may not | |
3841 | be the case for the hp300hpux target, for example. */ | |
3842 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, | |
3843 | &aout_info.symoff); | |
3844 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
3845 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
3846 | obj_sym_filepos (abfd) = aout_info.symoff; | |
3847 | ||
3848 | /* We keep a count of the symbols as we output them. */ | |
3849 | obj_aout_external_sym_count (abfd) = 0; | |
3850 | ||
3851 | /* We accumulate the string table as we write out the symbols. */ | |
3852 | aout_info.strtab = _bfd_stringtab_init (); | |
3853 | if (aout_info.strtab == NULL) | |
3854 | goto error_return; | |
3855 | ||
3856 | /* Allocate buffers to hold section contents and relocs. */ | |
3857 | aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size); | |
3858 | aout_info.relocs = (PTR) bfd_malloc (max_relocs_size); | |
3859 | aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int *)); | |
3860 | aout_info.output_syms = ((struct external_nlist *) | |
3861 | bfd_malloc ((max_sym_count + 1) | |
3862 | * sizeof (struct external_nlist))); | |
3863 | if ((aout_info.contents == NULL && max_contents_size != 0) | |
3864 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
3865 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
3866 | || aout_info.output_syms == NULL) | |
3867 | goto error_return; | |
3868 | ||
3869 | /* If we have a symbol named __DYNAMIC, force it out now. This is | |
3870 | required by SunOS. Doing this here rather than in sunos.c is a | |
3871 | hack, but it's easier than exporting everything which would be | |
3872 | needed. */ | |
3873 | { | |
3874 | struct aout_link_hash_entry *h; | |
3875 | ||
3876 | h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", | |
b34976b6 | 3877 | FALSE, FALSE, FALSE); |
252b5132 RH |
3878 | if (h != NULL) |
3879 | aout_link_write_other_symbol (h, &aout_info); | |
3880 | } | |
3881 | ||
3882 | /* The most time efficient way to do the link would be to read all | |
3883 | the input object files into memory and then sort out the | |
3884 | information into the output file. Unfortunately, that will | |
3885 | probably use too much memory. Another method would be to step | |
3886 | through everything that composes the text section and write it | |
3887 | out, and then everything that composes the data section and write | |
3888 | it out, and then write out the relocs, and then write out the | |
3889 | symbols. Unfortunately, that requires reading stuff from each | |
3890 | input file several times, and we will not be able to keep all the | |
3891 | input files open simultaneously, and reopening them will be slow. | |
3892 | ||
3893 | What we do is basically process one input file at a time. We do | |
3894 | everything we need to do with an input file once--copy over the | |
3895 | section contents, handle the relocation information, and write | |
3896 | out the symbols--and then we throw away the information we read | |
3897 | from it. This approach requires a lot of lseeks of the output | |
3898 | file, which is unfortunate but still faster than reopening a lot | |
3899 | of files. | |
3900 | ||
3901 | We use the output_has_begun field of the input BFDs to see | |
3902 | whether we have already handled it. */ | |
3903 | for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next) | |
b34976b6 | 3904 | sub->output_has_begun = FALSE; |
252b5132 RH |
3905 | |
3906 | /* Mark all sections which are to be included in the link. This | |
3907 | will normally be every section. We need to do this so that we | |
3908 | can identify any sections which the linker has decided to not | |
3909 | include. */ | |
3910 | for (o = abfd->sections; o != NULL; o = o->next) | |
3911 | { | |
3912 | for (p = o->link_order_head; p != NULL; p = p->next) | |
5ed6aba4 NC |
3913 | if (p->type == bfd_indirect_link_order) |
3914 | p->u.indirect.section->linker_mark = TRUE; | |
252b5132 RH |
3915 | } |
3916 | ||
b34976b6 | 3917 | have_link_order_relocs = FALSE; |
252b5132 RH |
3918 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
3919 | { | |
3920 | for (p = o->link_order_head; | |
3921 | p != (struct bfd_link_order *) NULL; | |
3922 | p = p->next) | |
3923 | { | |
3924 | if (p->type == bfd_indirect_link_order | |
3925 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
3926 | == bfd_target_aout_flavour)) | |
3927 | { | |
3928 | bfd *input_bfd; | |
3929 | ||
3930 | input_bfd = p->u.indirect.section->owner; | |
3931 | if (! input_bfd->output_has_begun) | |
3932 | { | |
3933 | if (! aout_link_input_bfd (&aout_info, input_bfd)) | |
3934 | goto error_return; | |
b34976b6 | 3935 | input_bfd->output_has_begun = TRUE; |
252b5132 RH |
3936 | } |
3937 | } | |
3938 | else if (p->type == bfd_section_reloc_link_order | |
3939 | || p->type == bfd_symbol_reloc_link_order) | |
3940 | { | |
3941 | /* These are handled below. */ | |
b34976b6 | 3942 | have_link_order_relocs = TRUE; |
252b5132 RH |
3943 | } |
3944 | else | |
3945 | { | |
3946 | if (! _bfd_default_link_order (abfd, info, o, p)) | |
3947 | goto error_return; | |
3948 | } | |
3949 | } | |
3950 | } | |
3951 | ||
3952 | /* Write out any symbols that we have not already written out. */ | |
3953 | aout_link_hash_traverse (aout_hash_table (info), | |
3954 | aout_link_write_other_symbol, | |
3955 | (PTR) &aout_info); | |
3956 | ||
3957 | /* Now handle any relocs we were asked to create by the linker. | |
3958 | These did not come from any input file. We must do these after | |
3959 | we have written out all the symbols, so that we know the symbol | |
3960 | indices to use. */ | |
3961 | if (have_link_order_relocs) | |
3962 | { | |
3963 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
3964 | { | |
3965 | for (p = o->link_order_head; | |
3966 | p != (struct bfd_link_order *) NULL; | |
3967 | p = p->next) | |
3968 | { | |
3969 | if (p->type == bfd_section_reloc_link_order | |
3970 | || p->type == bfd_symbol_reloc_link_order) | |
3971 | { | |
3972 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
3973 | goto error_return; | |
3974 | } | |
3975 | } | |
3976 | } | |
3977 | } | |
3978 | ||
3979 | if (aout_info.contents != NULL) | |
3980 | { | |
3981 | free (aout_info.contents); | |
3982 | aout_info.contents = NULL; | |
3983 | } | |
3984 | if (aout_info.relocs != NULL) | |
3985 | { | |
3986 | free (aout_info.relocs); | |
3987 | aout_info.relocs = NULL; | |
3988 | } | |
3989 | if (aout_info.symbol_map != NULL) | |
3990 | { | |
3991 | free (aout_info.symbol_map); | |
3992 | aout_info.symbol_map = NULL; | |
3993 | } | |
3994 | if (aout_info.output_syms != NULL) | |
3995 | { | |
3996 | free (aout_info.output_syms); | |
3997 | aout_info.output_syms = NULL; | |
3998 | } | |
3999 | if (includes_hash_initialized) | |
4000 | { | |
4001 | bfd_hash_table_free (&aout_info.includes.root); | |
b34976b6 | 4002 | includes_hash_initialized = FALSE; |
252b5132 RH |
4003 | } |
4004 | ||
4005 | /* Finish up any dynamic linking we may be doing. */ | |
4006 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
4007 | { | |
4008 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
4009 | goto error_return; | |
4010 | } | |
4011 | ||
4012 | /* Update the header information. */ | |
4013 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
4014 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
4015 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
4016 | obj_textsec (abfd)->reloc_count = | |
4017 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
4018 | obj_datasec (abfd)->reloc_count = | |
4019 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
4020 | ||
4021 | /* Write out the string table, unless there are no symbols. */ | |
4022 | if (abfd->symcount > 0) | |
4023 | { | |
4024 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
4025 | || ! emit_stringtab (abfd, aout_info.strtab)) | |
4026 | goto error_return; | |
4027 | } | |
4028 | else if (obj_textsec (abfd)->reloc_count == 0 | |
4029 | && obj_datasec (abfd)->reloc_count == 0) | |
4030 | { | |
4031 | bfd_byte b; | |
dc810e39 | 4032 | file_ptr pos; |
252b5132 RH |
4033 | |
4034 | b = 0; | |
dc810e39 AM |
4035 | pos = obj_datasec (abfd)->filepos + exec_hdr (abfd)->a_data - 1; |
4036 | if (bfd_seek (abfd, pos, SEEK_SET) != 0 | |
4037 | || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1) | |
252b5132 RH |
4038 | goto error_return; |
4039 | } | |
4040 | ||
b34976b6 | 4041 | return TRUE; |
252b5132 RH |
4042 | |
4043 | error_return: | |
4044 | if (aout_info.contents != NULL) | |
4045 | free (aout_info.contents); | |
4046 | if (aout_info.relocs != NULL) | |
4047 | free (aout_info.relocs); | |
4048 | if (aout_info.symbol_map != NULL) | |
4049 | free (aout_info.symbol_map); | |
4050 | if (aout_info.output_syms != NULL) | |
4051 | free (aout_info.output_syms); | |
4052 | if (includes_hash_initialized) | |
4053 | bfd_hash_table_free (&aout_info.includes.root); | |
b34976b6 | 4054 | return FALSE; |
252b5132 RH |
4055 | } |
4056 | ||
4057 | /* Link an a.out input BFD into the output file. */ | |
4058 | ||
b34976b6 | 4059 | static bfd_boolean |
252b5132 RH |
4060 | aout_link_input_bfd (finfo, input_bfd) |
4061 | struct aout_final_link_info *finfo; | |
4062 | bfd *input_bfd; | |
4063 | { | |
4064 | bfd_size_type sym_count; | |
4065 | ||
4066 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); | |
4067 | ||
4068 | /* If this is a dynamic object, it may need special handling. */ | |
4069 | if ((input_bfd->flags & DYNAMIC) != 0 | |
4070 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
4071 | { | |
4072 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
4073 | (finfo->info, input_bfd)); | |
4074 | } | |
4075 | ||
4076 | /* Get the symbols. We probably have them already, unless | |
b34976b6 | 4077 | finfo->info->keep_memory is FALSE. */ |
252b5132 | 4078 | if (! aout_get_external_symbols (input_bfd)) |
b34976b6 | 4079 | return FALSE; |
252b5132 RH |
4080 | |
4081 | sym_count = obj_aout_external_sym_count (input_bfd); | |
4082 | ||
4083 | /* Write out the symbols and get a map of the new indices. The map | |
4084 | is placed into finfo->symbol_map. */ | |
4085 | if (! aout_link_write_symbols (finfo, input_bfd)) | |
b34976b6 | 4086 | return FALSE; |
252b5132 RH |
4087 | |
4088 | /* Relocate and write out the sections. These functions use the | |
4089 | symbol map created by aout_link_write_symbols. The linker_mark | |
4090 | field will be set if these sections are to be included in the | |
4091 | link, which will normally be the case. */ | |
4092 | if (obj_textsec (input_bfd)->linker_mark) | |
4093 | { | |
4094 | if (! aout_link_input_section (finfo, input_bfd, | |
4095 | obj_textsec (input_bfd), | |
4096 | &finfo->treloff, | |
4097 | exec_hdr (input_bfd)->a_trsize)) | |
b34976b6 | 4098 | return FALSE; |
252b5132 RH |
4099 | } |
4100 | if (obj_datasec (input_bfd)->linker_mark) | |
4101 | { | |
4102 | if (! aout_link_input_section (finfo, input_bfd, | |
4103 | obj_datasec (input_bfd), | |
4104 | &finfo->dreloff, | |
4105 | exec_hdr (input_bfd)->a_drsize)) | |
b34976b6 | 4106 | return FALSE; |
252b5132 RH |
4107 | } |
4108 | ||
4109 | /* If we are not keeping memory, we don't need the symbols any | |
4110 | longer. We still need them if we are keeping memory, because the | |
4111 | strings in the hash table point into them. */ | |
4112 | if (! finfo->info->keep_memory) | |
4113 | { | |
4114 | if (! aout_link_free_symbols (input_bfd)) | |
b34976b6 | 4115 | return FALSE; |
252b5132 RH |
4116 | } |
4117 | ||
b34976b6 | 4118 | return TRUE; |
252b5132 RH |
4119 | } |
4120 | ||
4121 | /* Adjust and write out the symbols for an a.out file. Set the new | |
4122 | symbol indices into a symbol_map. */ | |
4123 | ||
b34976b6 | 4124 | static bfd_boolean |
252b5132 RH |
4125 | aout_link_write_symbols (finfo, input_bfd) |
4126 | struct aout_final_link_info *finfo; | |
4127 | bfd *input_bfd; | |
4128 | { | |
4129 | bfd *output_bfd; | |
4130 | bfd_size_type sym_count; | |
4131 | char *strings; | |
4132 | enum bfd_link_strip strip; | |
4133 | enum bfd_link_discard discard; | |
4134 | struct external_nlist *outsym; | |
4135 | bfd_size_type strtab_index; | |
4136 | register struct external_nlist *sym; | |
4137 | struct external_nlist *sym_end; | |
4138 | struct aout_link_hash_entry **sym_hash; | |
4139 | int *symbol_map; | |
b34976b6 AM |
4140 | bfd_boolean pass; |
4141 | bfd_boolean skip_next; | |
252b5132 RH |
4142 | |
4143 | output_bfd = finfo->output_bfd; | |
4144 | sym_count = obj_aout_external_sym_count (input_bfd); | |
4145 | strings = obj_aout_external_strings (input_bfd); | |
4146 | strip = finfo->info->strip; | |
4147 | discard = finfo->info->discard; | |
4148 | outsym = finfo->output_syms; | |
4149 | ||
4150 | /* First write out a symbol for this object file, unless we are | |
4151 | discarding such symbols. */ | |
4152 | if (strip != strip_all | |
4153 | && (strip != strip_some | |
4154 | || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename, | |
b34976b6 | 4155 | FALSE, FALSE) != NULL) |
252b5132 RH |
4156 | && discard != discard_all) |
4157 | { | |
dc810e39 AM |
4158 | H_PUT_8 (output_bfd, N_TEXT, outsym->e_type); |
4159 | H_PUT_8 (output_bfd, 0, outsym->e_other); | |
4160 | H_PUT_16 (output_bfd, 0, outsym->e_desc); | |
252b5132 | 4161 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, |
b34976b6 | 4162 | input_bfd->filename, FALSE); |
252b5132 | 4163 | if (strtab_index == (bfd_size_type) -1) |
b34976b6 | 4164 | return FALSE; |
252b5132 RH |
4165 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); |
4166 | PUT_WORD (output_bfd, | |
4167 | (bfd_get_section_vma (output_bfd, | |
4168 | obj_textsec (input_bfd)->output_section) | |
4169 | + obj_textsec (input_bfd)->output_offset), | |
4170 | outsym->e_value); | |
4171 | ++obj_aout_external_sym_count (output_bfd); | |
4172 | ++outsym; | |
4173 | } | |
4174 | ||
b34976b6 AM |
4175 | pass = FALSE; |
4176 | skip_next = FALSE; | |
252b5132 RH |
4177 | sym = obj_aout_external_syms (input_bfd); |
4178 | sym_end = sym + sym_count; | |
4179 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
4180 | symbol_map = finfo->symbol_map; | |
dc810e39 | 4181 | memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map); |
252b5132 RH |
4182 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) |
4183 | { | |
4184 | const char *name; | |
4185 | int type; | |
4186 | struct aout_link_hash_entry *h; | |
b34976b6 | 4187 | bfd_boolean skip; |
252b5132 RH |
4188 | asection *symsec; |
4189 | bfd_vma val = 0; | |
b34976b6 | 4190 | bfd_boolean copy; |
252b5132 RH |
4191 | |
4192 | /* We set *symbol_map to 0 above for all symbols. If it has | |
4193 | already been set to -1 for this symbol, it means that we are | |
4194 | discarding it because it appears in a duplicate header file. | |
4195 | See the N_BINCL code below. */ | |
4196 | if (*symbol_map == -1) | |
4197 | continue; | |
4198 | ||
4199 | /* Initialize *symbol_map to -1, which means that the symbol was | |
4200 | not copied into the output file. We will change it later if | |
4201 | we do copy the symbol over. */ | |
4202 | *symbol_map = -1; | |
4203 | ||
dc810e39 | 4204 | type = H_GET_8 (input_bfd, sym->e_type); |
252b5132 RH |
4205 | name = strings + GET_WORD (input_bfd, sym->e_strx); |
4206 | ||
4207 | h = NULL; | |
4208 | ||
4209 | if (pass) | |
4210 | { | |
4211 | /* Pass this symbol through. It is the target of an | |
4212 | indirect or warning symbol. */ | |
4213 | val = GET_WORD (input_bfd, sym->e_value); | |
b34976b6 | 4214 | pass = FALSE; |
252b5132 RH |
4215 | } |
4216 | else if (skip_next) | |
4217 | { | |
4218 | /* Skip this symbol, which is the target of an indirect | |
4219 | symbol that we have changed to no longer be an indirect | |
4220 | symbol. */ | |
b34976b6 | 4221 | skip_next = FALSE; |
252b5132 RH |
4222 | continue; |
4223 | } | |
4224 | else | |
4225 | { | |
4226 | struct aout_link_hash_entry *hresolve; | |
4227 | ||
4228 | /* We have saved the hash table entry for this symbol, if | |
4229 | there is one. Note that we could just look it up again | |
4230 | in the hash table, provided we first check that it is an | |
0ef5a5bd | 4231 | external symbol. */ |
252b5132 RH |
4232 | h = *sym_hash; |
4233 | ||
4234 | /* Use the name from the hash table, in case the symbol was | |
4235 | wrapped. */ | |
0f3bd64f AM |
4236 | if (h != NULL |
4237 | && h->root.type != bfd_link_hash_warning) | |
252b5132 RH |
4238 | name = h->root.root.string; |
4239 | ||
4240 | /* If this is an indirect or warning symbol, then change | |
4241 | hresolve to the base symbol. We also change *sym_hash so | |
4242 | that the relocation routines relocate against the real | |
4243 | symbol. */ | |
4244 | hresolve = h; | |
4245 | if (h != (struct aout_link_hash_entry *) NULL | |
4246 | && (h->root.type == bfd_link_hash_indirect | |
4247 | || h->root.type == bfd_link_hash_warning)) | |
4248 | { | |
4249 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; | |
4250 | while (hresolve->root.type == bfd_link_hash_indirect | |
4251 | || hresolve->root.type == bfd_link_hash_warning) | |
4252 | hresolve = ((struct aout_link_hash_entry *) | |
4253 | hresolve->root.u.i.link); | |
4254 | *sym_hash = hresolve; | |
4255 | } | |
4256 | ||
4257 | /* If the symbol has already been written out, skip it. */ | |
4258 | if (h != (struct aout_link_hash_entry *) NULL | |
252b5132 RH |
4259 | && h->written) |
4260 | { | |
4261 | if ((type & N_TYPE) == N_INDR | |
4262 | || type == N_WARNING) | |
b34976b6 | 4263 | skip_next = TRUE; |
252b5132 RH |
4264 | *symbol_map = h->indx; |
4265 | continue; | |
4266 | } | |
4267 | ||
4268 | /* See if we are stripping this symbol. */ | |
b34976b6 | 4269 | skip = FALSE; |
252b5132 RH |
4270 | switch (strip) |
4271 | { | |
4272 | case strip_none: | |
4273 | break; | |
4274 | case strip_debugger: | |
4275 | if ((type & N_STAB) != 0) | |
b34976b6 | 4276 | skip = TRUE; |
252b5132 RH |
4277 | break; |
4278 | case strip_some: | |
b34976b6 | 4279 | if (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE, FALSE) |
252b5132 | 4280 | == NULL) |
b34976b6 | 4281 | skip = TRUE; |
252b5132 RH |
4282 | break; |
4283 | case strip_all: | |
b34976b6 | 4284 | skip = TRUE; |
252b5132 RH |
4285 | break; |
4286 | } | |
4287 | if (skip) | |
4288 | { | |
4289 | if (h != (struct aout_link_hash_entry *) NULL) | |
b34976b6 | 4290 | h->written = TRUE; |
252b5132 RH |
4291 | continue; |
4292 | } | |
4293 | ||
4294 | /* Get the value of the symbol. */ | |
4295 | if ((type & N_TYPE) == N_TEXT | |
4296 | || type == N_WEAKT) | |
4297 | symsec = obj_textsec (input_bfd); | |
4298 | else if ((type & N_TYPE) == N_DATA | |
4299 | || type == N_WEAKD) | |
4300 | symsec = obj_datasec (input_bfd); | |
4301 | else if ((type & N_TYPE) == N_BSS | |
4302 | || type == N_WEAKB) | |
4303 | symsec = obj_bsssec (input_bfd); | |
4304 | else if ((type & N_TYPE) == N_ABS | |
4305 | || type == N_WEAKA) | |
4306 | symsec = bfd_abs_section_ptr; | |
4307 | else if (((type & N_TYPE) == N_INDR | |
4308 | && (hresolve == (struct aout_link_hash_entry *) NULL | |
4309 | || (hresolve->root.type != bfd_link_hash_defined | |
4310 | && hresolve->root.type != bfd_link_hash_defweak | |
4311 | && hresolve->root.type != bfd_link_hash_common))) | |
4312 | || type == N_WARNING) | |
4313 | { | |
4314 | /* Pass the next symbol through unchanged. The | |
4315 | condition above for indirect symbols is so that if | |
4316 | the indirect symbol was defined, we output it with | |
4317 | the correct definition so the debugger will | |
4318 | understand it. */ | |
b34976b6 | 4319 | pass = TRUE; |
252b5132 RH |
4320 | val = GET_WORD (input_bfd, sym->e_value); |
4321 | symsec = NULL; | |
4322 | } | |
4323 | else if ((type & N_STAB) != 0) | |
4324 | { | |
4325 | val = GET_WORD (input_bfd, sym->e_value); | |
4326 | symsec = NULL; | |
4327 | } | |
4328 | else | |
4329 | { | |
4330 | /* If we get here with an indirect symbol, it means that | |
4331 | we are outputting it with a real definition. In such | |
4332 | a case we do not want to output the next symbol, | |
4333 | which is the target of the indirection. */ | |
4334 | if ((type & N_TYPE) == N_INDR) | |
b34976b6 | 4335 | skip_next = TRUE; |
252b5132 RH |
4336 | |
4337 | symsec = NULL; | |
4338 | ||
4339 | /* We need to get the value from the hash table. We use | |
4340 | hresolve so that if we have defined an indirect | |
4341 | symbol we output the final definition. */ | |
4342 | if (h == (struct aout_link_hash_entry *) NULL) | |
4343 | { | |
4344 | switch (type & N_TYPE) | |
4345 | { | |
4346 | case N_SETT: | |
4347 | symsec = obj_textsec (input_bfd); | |
4348 | break; | |
4349 | case N_SETD: | |
4350 | symsec = obj_datasec (input_bfd); | |
4351 | break; | |
4352 | case N_SETB: | |
4353 | symsec = obj_bsssec (input_bfd); | |
4354 | break; | |
4355 | case N_SETA: | |
4356 | symsec = bfd_abs_section_ptr; | |
4357 | break; | |
4358 | default: | |
4359 | val = 0; | |
4360 | break; | |
4361 | } | |
4362 | } | |
4363 | else if (hresolve->root.type == bfd_link_hash_defined | |
4364 | || hresolve->root.type == bfd_link_hash_defweak) | |
4365 | { | |
4366 | asection *input_section; | |
4367 | asection *output_section; | |
4368 | ||
4369 | /* This case usually means a common symbol which was | |
4370 | turned into a defined symbol. */ | |
4371 | input_section = hresolve->root.u.def.section; | |
4372 | output_section = input_section->output_section; | |
4373 | BFD_ASSERT (bfd_is_abs_section (output_section) | |
4374 | || output_section->owner == output_bfd); | |
4375 | val = (hresolve->root.u.def.value | |
4376 | + bfd_get_section_vma (output_bfd, output_section) | |
4377 | + input_section->output_offset); | |
4378 | ||
4379 | /* Get the correct type based on the section. If | |
4380 | this is a constructed set, force it to be | |
4381 | globally visible. */ | |
4382 | if (type == N_SETT | |
4383 | || type == N_SETD | |
4384 | || type == N_SETB | |
4385 | || type == N_SETA) | |
4386 | type |= N_EXT; | |
4387 | ||
4388 | type &=~ N_TYPE; | |
4389 | ||
4390 | if (output_section == obj_textsec (output_bfd)) | |
4391 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4392 | ? N_TEXT | |
4393 | : N_WEAKT); | |
4394 | else if (output_section == obj_datasec (output_bfd)) | |
4395 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4396 | ? N_DATA | |
4397 | : N_WEAKD); | |
4398 | else if (output_section == obj_bsssec (output_bfd)) | |
4399 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4400 | ? N_BSS | |
4401 | : N_WEAKB); | |
4402 | else | |
4403 | type |= (hresolve->root.type == bfd_link_hash_defined | |
4404 | ? N_ABS | |
4405 | : N_WEAKA); | |
4406 | } | |
4407 | else if (hresolve->root.type == bfd_link_hash_common) | |
4408 | val = hresolve->root.u.c.size; | |
4409 | else if (hresolve->root.type == bfd_link_hash_undefweak) | |
4410 | { | |
4411 | val = 0; | |
4412 | type = N_WEAKU; | |
4413 | } | |
4414 | else | |
4415 | val = 0; | |
4416 | } | |
4417 | if (symsec != (asection *) NULL) | |
4418 | val = (symsec->output_section->vma | |
4419 | + symsec->output_offset | |
4420 | + (GET_WORD (input_bfd, sym->e_value) | |
4421 | - symsec->vma)); | |
4422 | ||
4423 | /* If this is a global symbol set the written flag, and if | |
4424 | it is a local symbol see if we should discard it. */ | |
4425 | if (h != (struct aout_link_hash_entry *) NULL) | |
4426 | { | |
b34976b6 | 4427 | h->written = TRUE; |
252b5132 RH |
4428 | h->indx = obj_aout_external_sym_count (output_bfd); |
4429 | } | |
4430 | else if ((type & N_TYPE) != N_SETT | |
4431 | && (type & N_TYPE) != N_SETD | |
4432 | && (type & N_TYPE) != N_SETB | |
4433 | && (type & N_TYPE) != N_SETA) | |
4434 | { | |
4435 | switch (discard) | |
4436 | { | |
4437 | case discard_none: | |
f5fa8ca2 | 4438 | case discard_sec_merge: |
252b5132 RH |
4439 | break; |
4440 | case discard_l: | |
4441 | if ((type & N_STAB) == 0 | |
4442 | && bfd_is_local_label_name (input_bfd, name)) | |
b34976b6 | 4443 | skip = TRUE; |
252b5132 RH |
4444 | break; |
4445 | case discard_all: | |
b34976b6 | 4446 | skip = TRUE; |
252b5132 RH |
4447 | break; |
4448 | } | |
4449 | if (skip) | |
4450 | { | |
b34976b6 | 4451 | pass = FALSE; |
252b5132 RH |
4452 | continue; |
4453 | } | |
4454 | } | |
4455 | ||
4456 | /* An N_BINCL symbol indicates the start of the stabs | |
4457 | entries for a header file. We need to scan ahead to the | |
4458 | next N_EINCL symbol, ignoring nesting, adding up all the | |
4459 | characters in the symbol names, not including the file | |
4460 | numbers in types (the first number after an open | |
4461 | parenthesis). */ | |
d45913a0 | 4462 | if (type == (int) N_BINCL) |
252b5132 RH |
4463 | { |
4464 | struct external_nlist *incl_sym; | |
4465 | int nest; | |
4466 | struct aout_link_includes_entry *incl_entry; | |
4467 | struct aout_link_includes_totals *t; | |
4468 | ||
4469 | val = 0; | |
4470 | nest = 0; | |
4471 | for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) | |
4472 | { | |
4473 | int incl_type; | |
4474 | ||
dc810e39 | 4475 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); |
d45913a0 | 4476 | if (incl_type == (int) N_EINCL) |
252b5132 RH |
4477 | { |
4478 | if (nest == 0) | |
4479 | break; | |
4480 | --nest; | |
4481 | } | |
d45913a0 | 4482 | else if (incl_type == (int) N_BINCL) |
252b5132 RH |
4483 | ++nest; |
4484 | else if (nest == 0) | |
4485 | { | |
4486 | const char *s; | |
4487 | ||
4488 | s = strings + GET_WORD (input_bfd, incl_sym->e_strx); | |
4489 | for (; *s != '\0'; s++) | |
4490 | { | |
4491 | val += *s; | |
4492 | if (*s == '(') | |
4493 | { | |
4494 | /* Skip the file number. */ | |
4495 | ++s; | |
3882b010 | 4496 | while (ISDIGIT (*s)) |
252b5132 RH |
4497 | ++s; |
4498 | --s; | |
4499 | } | |
4500 | } | |
4501 | } | |
4502 | } | |
4503 | ||
4504 | /* If we have already included a header file with the | |
4505 | same value, then replace this one with an N_EXCL | |
4506 | symbol. */ | |
b34976b6 | 4507 | copy = (bfd_boolean) (! finfo->info->keep_memory); |
252b5132 | 4508 | incl_entry = aout_link_includes_lookup (&finfo->includes, |
b34976b6 | 4509 | name, TRUE, copy); |
252b5132 | 4510 | if (incl_entry == NULL) |
b34976b6 | 4511 | return FALSE; |
252b5132 RH |
4512 | for (t = incl_entry->totals; t != NULL; t = t->next) |
4513 | if (t->total == val) | |
4514 | break; | |
4515 | if (t == NULL) | |
4516 | { | |
4517 | /* This is the first time we have seen this header | |
4518 | file with this set of stabs strings. */ | |
4519 | t = ((struct aout_link_includes_totals *) | |
4520 | bfd_hash_allocate (&finfo->includes.root, | |
4521 | sizeof *t)); | |
4522 | if (t == NULL) | |
b34976b6 | 4523 | return FALSE; |
252b5132 RH |
4524 | t->total = val; |
4525 | t->next = incl_entry->totals; | |
4526 | incl_entry->totals = t; | |
4527 | } | |
4528 | else | |
4529 | { | |
4530 | int *incl_map; | |
4531 | ||
4532 | /* This is a duplicate header file. We must change | |
4533 | it to be an N_EXCL entry, and mark all the | |
4534 | included symbols to prevent outputting them. */ | |
d45913a0 | 4535 | type = (int) N_EXCL; |
252b5132 RH |
4536 | |
4537 | nest = 0; | |
4538 | for (incl_sym = sym + 1, incl_map = symbol_map + 1; | |
4539 | incl_sym < sym_end; | |
4540 | incl_sym++, incl_map++) | |
4541 | { | |
4542 | int incl_type; | |
4543 | ||
dc810e39 | 4544 | incl_type = H_GET_8 (input_bfd, incl_sym->e_type); |
d45913a0 | 4545 | if (incl_type == (int) N_EINCL) |
252b5132 RH |
4546 | { |
4547 | if (nest == 0) | |
4548 | { | |
4549 | *incl_map = -1; | |
4550 | break; | |
4551 | } | |
4552 | --nest; | |
4553 | } | |
d45913a0 | 4554 | else if (incl_type == (int) N_BINCL) |
252b5132 RH |
4555 | ++nest; |
4556 | else if (nest == 0) | |
4557 | *incl_map = -1; | |
4558 | } | |
4559 | } | |
4560 | } | |
4561 | } | |
4562 | ||
4563 | /* Copy this symbol into the list of symbols we are going to | |
4564 | write out. */ | |
dc810e39 AM |
4565 | H_PUT_8 (output_bfd, type, outsym->e_type); |
4566 | H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other); | |
4567 | H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc); | |
b34976b6 | 4568 | copy = FALSE; |
252b5132 RH |
4569 | if (! finfo->info->keep_memory) |
4570 | { | |
4571 | /* name points into a string table which we are going to | |
4572 | free. If there is a hash table entry, use that string. | |
4573 | Otherwise, copy name into memory. */ | |
4574 | if (h != (struct aout_link_hash_entry *) NULL) | |
4575 | name = h->root.root.string; | |
4576 | else | |
b34976b6 | 4577 | copy = TRUE; |
252b5132 RH |
4578 | } |
4579 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, | |
4580 | name, copy); | |
4581 | if (strtab_index == (bfd_size_type) -1) | |
b34976b6 | 4582 | return FALSE; |
252b5132 RH |
4583 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); |
4584 | PUT_WORD (output_bfd, val, outsym->e_value); | |
4585 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
4586 | ++obj_aout_external_sym_count (output_bfd); | |
4587 | ++outsym; | |
4588 | } | |
4589 | ||
4590 | /* Write out the output symbols we have just constructed. */ | |
4591 | if (outsym > finfo->output_syms) | |
4592 | { | |
dc810e39 | 4593 | bfd_size_type outsym_size; |
252b5132 RH |
4594 | |
4595 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0) | |
b34976b6 | 4596 | return FALSE; |
dc810e39 AM |
4597 | outsym_size = outsym - finfo->output_syms; |
4598 | outsym_size *= EXTERNAL_NLIST_SIZE; | |
4599 | if (bfd_bwrite ((PTR) finfo->output_syms, outsym_size, output_bfd) | |
4600 | != outsym_size) | |
b34976b6 | 4601 | return FALSE; |
dc810e39 | 4602 | finfo->symoff += outsym_size; |
252b5132 RH |
4603 | } |
4604 | ||
b34976b6 | 4605 | return TRUE; |
252b5132 RH |
4606 | } |
4607 | ||
4608 | /* Write out a symbol that was not associated with an a.out input | |
4609 | object. */ | |
4610 | ||
b34976b6 | 4611 | static bfd_boolean |
252b5132 RH |
4612 | aout_link_write_other_symbol (h, data) |
4613 | struct aout_link_hash_entry *h; | |
4614 | PTR data; | |
4615 | { | |
4616 | struct aout_final_link_info *finfo = (struct aout_final_link_info *) data; | |
4617 | bfd *output_bfd; | |
4618 | int type; | |
4619 | bfd_vma val; | |
4620 | struct external_nlist outsym; | |
4621 | bfd_size_type indx; | |
dc810e39 | 4622 | bfd_size_type amt; |
252b5132 | 4623 | |
e92d460e AM |
4624 | if (h->root.type == bfd_link_hash_warning) |
4625 | { | |
4626 | h = (struct aout_link_hash_entry *) h->root.u.i.link; | |
4627 | if (h->root.type == bfd_link_hash_new) | |
b34976b6 | 4628 | return TRUE; |
e92d460e AM |
4629 | } |
4630 | ||
252b5132 RH |
4631 | output_bfd = finfo->output_bfd; |
4632 | ||
4633 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) | |
4634 | { | |
4635 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) | |
4636 | (output_bfd, finfo->info, h))) | |
4637 | { | |
4638 | /* FIXME: No way to handle errors. */ | |
4639 | abort (); | |
4640 | } | |
4641 | } | |
4642 | ||
4643 | if (h->written) | |
b34976b6 | 4644 | return TRUE; |
252b5132 | 4645 | |
b34976b6 | 4646 | h->written = TRUE; |
252b5132 RH |
4647 | |
4648 | /* An indx of -2 means the symbol must be written. */ | |
4649 | if (h->indx != -2 | |
4650 | && (finfo->info->strip == strip_all | |
4651 | || (finfo->info->strip == strip_some | |
4652 | && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string, | |
b34976b6 AM |
4653 | FALSE, FALSE) == NULL))) |
4654 | return TRUE; | |
252b5132 RH |
4655 | |
4656 | switch (h->root.type) | |
4657 | { | |
4658 | default: | |
e92d460e | 4659 | case bfd_link_hash_warning: |
252b5132 RH |
4660 | abort (); |
4661 | /* Avoid variable not initialized warnings. */ | |
b34976b6 | 4662 | return TRUE; |
252b5132 RH |
4663 | case bfd_link_hash_new: |
4664 | /* This can happen for set symbols when sets are not being | |
4665 | built. */ | |
b34976b6 | 4666 | return TRUE; |
252b5132 RH |
4667 | case bfd_link_hash_undefined: |
4668 | type = N_UNDF | N_EXT; | |
4669 | val = 0; | |
4670 | break; | |
4671 | case bfd_link_hash_defined: | |
4672 | case bfd_link_hash_defweak: | |
4673 | { | |
4674 | asection *sec; | |
4675 | ||
4676 | sec = h->root.u.def.section->output_section; | |
4677 | BFD_ASSERT (bfd_is_abs_section (sec) | |
4678 | || sec->owner == output_bfd); | |
4679 | if (sec == obj_textsec (output_bfd)) | |
4680 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; | |
4681 | else if (sec == obj_datasec (output_bfd)) | |
4682 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; | |
4683 | else if (sec == obj_bsssec (output_bfd)) | |
4684 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; | |
4685 | else | |
4686 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; | |
4687 | type |= N_EXT; | |
4688 | val = (h->root.u.def.value | |
4689 | + sec->vma | |
4690 | + h->root.u.def.section->output_offset); | |
4691 | } | |
4692 | break; | |
4693 | case bfd_link_hash_common: | |
4694 | type = N_UNDF | N_EXT; | |
4695 | val = h->root.u.c.size; | |
4696 | break; | |
4697 | case bfd_link_hash_undefweak: | |
4698 | type = N_WEAKU; | |
4699 | val = 0; | |
4700 | case bfd_link_hash_indirect: | |
e92d460e AM |
4701 | /* We ignore these symbols, since the indirected symbol is |
4702 | already in the hash table. */ | |
b34976b6 | 4703 | return TRUE; |
252b5132 RH |
4704 | } |
4705 | ||
dc810e39 AM |
4706 | H_PUT_8 (output_bfd, type, outsym.e_type); |
4707 | H_PUT_8 (output_bfd, 0, outsym.e_other); | |
4708 | H_PUT_16 (output_bfd, 0, outsym.e_desc); | |
252b5132 | 4709 | indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string, |
b34976b6 | 4710 | FALSE); |
dc810e39 | 4711 | if (indx == - (bfd_size_type) 1) |
252b5132 RH |
4712 | { |
4713 | /* FIXME: No way to handle errors. */ | |
4714 | abort (); | |
4715 | } | |
4716 | PUT_WORD (output_bfd, indx, outsym.e_strx); | |
4717 | PUT_WORD (output_bfd, val, outsym.e_value); | |
4718 | ||
dc810e39 | 4719 | amt = EXTERNAL_NLIST_SIZE; |
252b5132 | 4720 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0 |
dc810e39 | 4721 | || bfd_bwrite ((PTR) &outsym, amt, output_bfd) != amt) |
252b5132 RH |
4722 | { |
4723 | /* FIXME: No way to handle errors. */ | |
4724 | abort (); | |
4725 | } | |
4726 | ||
4727 | finfo->symoff += EXTERNAL_NLIST_SIZE; | |
4728 | h->indx = obj_aout_external_sym_count (output_bfd); | |
4729 | ++obj_aout_external_sym_count (output_bfd); | |
4730 | ||
b34976b6 | 4731 | return TRUE; |
252b5132 RH |
4732 | } |
4733 | ||
4734 | /* Link an a.out section into the output file. */ | |
4735 | ||
b34976b6 | 4736 | static bfd_boolean |
252b5132 RH |
4737 | aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr, |
4738 | rel_size) | |
4739 | struct aout_final_link_info *finfo; | |
4740 | bfd *input_bfd; | |
4741 | asection *input_section; | |
4742 | file_ptr *reloff_ptr; | |
4743 | bfd_size_type rel_size; | |
4744 | { | |
4745 | bfd_size_type input_size; | |
4746 | PTR relocs; | |
4747 | ||
4748 | /* Get the section contents. */ | |
eea6121a | 4749 | input_size = input_section->size; |
252b5132 RH |
4750 | if (! bfd_get_section_contents (input_bfd, input_section, |
4751 | (PTR) finfo->contents, | |
4752 | (file_ptr) 0, input_size)) | |
b34976b6 | 4753 | return FALSE; |
252b5132 RH |
4754 | |
4755 | /* Read in the relocs if we haven't already done it. */ | |
4756 | if (aout_section_data (input_section) != NULL | |
4757 | && aout_section_data (input_section)->relocs != NULL) | |
4758 | relocs = aout_section_data (input_section)->relocs; | |
4759 | else | |
4760 | { | |
4761 | relocs = finfo->relocs; | |
4762 | if (rel_size > 0) | |
4763 | { | |
4764 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
dc810e39 | 4765 | || bfd_bread (relocs, rel_size, input_bfd) != rel_size) |
b34976b6 | 4766 | return FALSE; |
252b5132 RH |
4767 | } |
4768 | } | |
4769 | ||
4770 | /* Relocate the section contents. */ | |
4771 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) | |
4772 | { | |
4773 | if (! aout_link_input_section_std (finfo, input_bfd, input_section, | |
4774 | (struct reloc_std_external *) relocs, | |
4775 | rel_size, finfo->contents)) | |
b34976b6 | 4776 | return FALSE; |
252b5132 RH |
4777 | } |
4778 | else | |
4779 | { | |
4780 | if (! aout_link_input_section_ext (finfo, input_bfd, input_section, | |
4781 | (struct reloc_ext_external *) relocs, | |
4782 | rel_size, finfo->contents)) | |
b34976b6 | 4783 | return FALSE; |
252b5132 RH |
4784 | } |
4785 | ||
4786 | /* Write out the section contents. */ | |
4787 | if (! bfd_set_section_contents (finfo->output_bfd, | |
4788 | input_section->output_section, | |
4789 | (PTR) finfo->contents, | |
dc810e39 | 4790 | (file_ptr) input_section->output_offset, |
252b5132 | 4791 | input_size)) |
b34976b6 | 4792 | return FALSE; |
252b5132 | 4793 | |
1049f94e | 4794 | /* If we are producing relocatable output, the relocs were |
252b5132 | 4795 | modified, and we now write them out. */ |
1049f94e | 4796 | if (finfo->info->relocatable && rel_size > 0) |
252b5132 RH |
4797 | { |
4798 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) | |
b34976b6 | 4799 | return FALSE; |
dc810e39 | 4800 | if (bfd_bwrite (relocs, rel_size, finfo->output_bfd) != rel_size) |
b34976b6 | 4801 | return FALSE; |
252b5132 RH |
4802 | *reloff_ptr += rel_size; |
4803 | ||
4804 | /* Assert that the relocs have not run into the symbols, and | |
4805 | that if these are the text relocs they have not run into the | |
4806 | data relocs. */ | |
4807 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
4808 | && (reloff_ptr != &finfo->treloff | |
4809 | || (*reloff_ptr | |
4810 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
4811 | } | |
4812 | ||
b34976b6 | 4813 | return TRUE; |
252b5132 RH |
4814 | } |
4815 | ||
4816 | /* Get the section corresponding to a reloc index. */ | |
4817 | ||
4818 | static INLINE asection * | |
4819 | aout_reloc_index_to_section (abfd, indx) | |
4820 | bfd *abfd; | |
4821 | int indx; | |
4822 | { | |
4823 | switch (indx & N_TYPE) | |
4824 | { | |
4825 | case N_TEXT: | |
4826 | return obj_textsec (abfd); | |
4827 | case N_DATA: | |
4828 | return obj_datasec (abfd); | |
4829 | case N_BSS: | |
4830 | return obj_bsssec (abfd); | |
4831 | case N_ABS: | |
4832 | case N_UNDF: | |
4833 | return bfd_abs_section_ptr; | |
4834 | default: | |
4835 | abort (); | |
4836 | } | |
7442e600 ILT |
4837 | /*NOTREACHED*/ |
4838 | return NULL; | |
252b5132 RH |
4839 | } |
4840 | ||
4841 | /* Relocate an a.out section using standard a.out relocs. */ | |
4842 | ||
b34976b6 | 4843 | static bfd_boolean |
252b5132 RH |
4844 | aout_link_input_section_std (finfo, input_bfd, input_section, relocs, |
4845 | rel_size, contents) | |
4846 | struct aout_final_link_info *finfo; | |
4847 | bfd *input_bfd; | |
4848 | asection *input_section; | |
4849 | struct reloc_std_external *relocs; | |
4850 | bfd_size_type rel_size; | |
4851 | bfd_byte *contents; | |
4852 | { | |
b34976b6 AM |
4853 | bfd_boolean (*check_dynamic_reloc) |
4854 | PARAMS ((struct bfd_link_info *, bfd *, asection *, | |
4855 | struct aout_link_hash_entry *, PTR, bfd_byte *, bfd_boolean *, | |
4856 | bfd_vma *)); | |
252b5132 | 4857 | bfd *output_bfd; |
1049f94e | 4858 | bfd_boolean relocatable; |
252b5132 RH |
4859 | struct external_nlist *syms; |
4860 | char *strings; | |
4861 | struct aout_link_hash_entry **sym_hashes; | |
4862 | int *symbol_map; | |
4863 | bfd_size_type reloc_count; | |
4864 | register struct reloc_std_external *rel; | |
4865 | struct reloc_std_external *rel_end; | |
4866 | ||
4867 | output_bfd = finfo->output_bfd; | |
4868 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; | |
4869 | ||
4870 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE); | |
4871 | BFD_ASSERT (input_bfd->xvec->header_byteorder | |
4872 | == output_bfd->xvec->header_byteorder); | |
4873 | ||
1049f94e | 4874 | relocatable = finfo->info->relocatable; |
252b5132 RH |
4875 | syms = obj_aout_external_syms (input_bfd); |
4876 | strings = obj_aout_external_strings (input_bfd); | |
4877 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
4878 | symbol_map = finfo->symbol_map; | |
4879 | ||
4880 | reloc_count = rel_size / RELOC_STD_SIZE; | |
4881 | rel = relocs; | |
4882 | rel_end = rel + reloc_count; | |
4883 | for (; rel < rel_end; rel++) | |
4884 | { | |
4885 | bfd_vma r_addr; | |
4886 | int r_index; | |
4887 | int r_extern; | |
4888 | int r_pcrel; | |
4889 | int r_baserel = 0; | |
4890 | reloc_howto_type *howto; | |
4891 | struct aout_link_hash_entry *h = NULL; | |
4892 | bfd_vma relocation; | |
4893 | bfd_reloc_status_type r; | |
4894 | ||
4895 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
4896 | ||
4897 | #ifdef MY_reloc_howto | |
923f08ff | 4898 | howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel); |
0ef5a5bd | 4899 | #else |
252b5132 RH |
4900 | { |
4901 | int r_jmptable; | |
4902 | int r_relative; | |
4903 | int r_length; | |
4904 | unsigned int howto_idx; | |
4905 | ||
4906 | if (bfd_header_big_endian (input_bfd)) | |
4907 | { | |
d45913a0 DA |
4908 | r_index = (((unsigned int) rel->r_index[0] << 16) |
4909 | | ((unsigned int) rel->r_index[1] << 8) | |
252b5132 RH |
4910 | | rel->r_index[2]); |
4911 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
4912 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
4913 | r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
4914 | r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
4915 | r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
4916 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
4917 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
4918 | } | |
4919 | else | |
4920 | { | |
d45913a0 DA |
4921 | r_index = (((unsigned int) rel->r_index[2] << 16) |
4922 | | ((unsigned int) rel->r_index[1] << 8) | |
252b5132 RH |
4923 | | rel->r_index[0]); |
4924 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
4925 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
4926 | r_baserel = (0 != (rel->r_type[0] | |
4927 | & RELOC_STD_BITS_BASEREL_LITTLE)); | |
4928 | r_jmptable= (0 != (rel->r_type[0] | |
4929 | & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
4930 | r_relative= (0 != (rel->r_type[0] | |
4931 | & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
4932 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
4933 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
4934 | } | |
4935 | ||
4936 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel | |
4937 | + 16 * r_jmptable + 32 * r_relative); | |
4938 | BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std)); | |
4939 | howto = howto_table_std + howto_idx; | |
4940 | } | |
4941 | #endif | |
4942 | ||
1049f94e | 4943 | if (relocatable) |
252b5132 | 4944 | { |
1049f94e | 4945 | /* We are generating a relocatable output file, and must |
252b5132 RH |
4946 | modify the reloc accordingly. */ |
4947 | if (r_extern) | |
4948 | { | |
4949 | /* If we know the symbol this relocation is against, | |
4950 | convert it into a relocation against a section. This | |
4951 | is what the native linker does. */ | |
4952 | h = sym_hashes[r_index]; | |
4953 | if (h != (struct aout_link_hash_entry *) NULL | |
4954 | && (h->root.type == bfd_link_hash_defined | |
4955 | || h->root.type == bfd_link_hash_defweak)) | |
4956 | { | |
4957 | asection *output_section; | |
4958 | ||
4959 | /* Change the r_extern value. */ | |
4960 | if (bfd_header_big_endian (output_bfd)) | |
4961 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG; | |
4962 | else | |
4963 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE; | |
4964 | ||
4965 | /* Compute a new r_index. */ | |
4966 | output_section = h->root.u.def.section->output_section; | |
4967 | if (output_section == obj_textsec (output_bfd)) | |
4968 | r_index = N_TEXT; | |
4969 | else if (output_section == obj_datasec (output_bfd)) | |
4970 | r_index = N_DATA; | |
4971 | else if (output_section == obj_bsssec (output_bfd)) | |
4972 | r_index = N_BSS; | |
4973 | else | |
4974 | r_index = N_ABS; | |
4975 | ||
4976 | /* Add the symbol value and the section VMA to the | |
4977 | addend stored in the contents. */ | |
4978 | relocation = (h->root.u.def.value | |
4979 | + output_section->vma | |
4980 | + h->root.u.def.section->output_offset); | |
4981 | } | |
4982 | else | |
4983 | { | |
4984 | /* We must change r_index according to the symbol | |
4985 | map. */ | |
4986 | r_index = symbol_map[r_index]; | |
4987 | ||
4988 | if (r_index == -1) | |
4989 | { | |
4990 | if (h != NULL) | |
4991 | { | |
4992 | /* We decided to strip this symbol, but it | |
4993 | turns out that we can't. Note that we | |
4994 | lose the other and desc information here. | |
4995 | I don't think that will ever matter for a | |
4996 | global symbol. */ | |
4997 | if (h->indx < 0) | |
4998 | { | |
4999 | h->indx = -2; | |
b34976b6 | 5000 | h->written = FALSE; |
252b5132 RH |
5001 | if (! aout_link_write_other_symbol (h, |
5002 | (PTR) finfo)) | |
b34976b6 | 5003 | return FALSE; |
252b5132 RH |
5004 | } |
5005 | r_index = h->indx; | |
5006 | } | |
5007 | else | |
5008 | { | |
5009 | const char *name; | |
5010 | ||
5011 | name = strings + GET_WORD (input_bfd, | |
5012 | syms[r_index].e_strx); | |
5013 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
5014 | (finfo->info, name, input_bfd, input_section, | |
5015 | r_addr))) | |
b34976b6 | 5016 | return FALSE; |
252b5132 RH |
5017 | r_index = 0; |
5018 | } | |
5019 | } | |
5020 | ||
5021 | relocation = 0; | |
5022 | } | |
5023 | ||
5024 | /* Write out the new r_index value. */ | |
5025 | if (bfd_header_big_endian (output_bfd)) | |
5026 | { | |
5027 | rel->r_index[0] = r_index >> 16; | |
5028 | rel->r_index[1] = r_index >> 8; | |
5029 | rel->r_index[2] = r_index; | |
5030 | } | |
5031 | else | |
5032 | { | |
5033 | rel->r_index[2] = r_index >> 16; | |
5034 | rel->r_index[1] = r_index >> 8; | |
5035 | rel->r_index[0] = r_index; | |
5036 | } | |
5037 | } | |
5038 | else | |
5039 | { | |
5040 | asection *section; | |
5041 | ||
5042 | /* This is a relocation against a section. We must | |
5043 | adjust by the amount that the section moved. */ | |
5044 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
5045 | relocation = (section->output_section->vma | |
5046 | + section->output_offset | |
5047 | - section->vma); | |
5048 | } | |
5049 | ||
5050 | /* Change the address of the relocation. */ | |
5051 | PUT_WORD (output_bfd, | |
5052 | r_addr + input_section->output_offset, | |
5053 | rel->r_address); | |
5054 | ||
5055 | /* Adjust a PC relative relocation by removing the reference | |
5056 | to the original address in the section and including the | |
5057 | reference to the new address. */ | |
5058 | if (r_pcrel) | |
5059 | relocation -= (input_section->output_section->vma | |
5060 | + input_section->output_offset | |
5061 | - input_section->vma); | |
5062 | ||
5063 | #ifdef MY_relocatable_reloc | |
5064 | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); | |
5065 | #endif | |
5066 | ||
5067 | if (relocation == 0) | |
5068 | r = bfd_reloc_ok; | |
5069 | else | |
5070 | r = MY_relocate_contents (howto, | |
5071 | input_bfd, relocation, | |
5072 | contents + r_addr); | |
5073 | } | |
5074 | else | |
5075 | { | |
b34976b6 | 5076 | bfd_boolean hundef; |
252b5132 RH |
5077 | |
5078 | /* We are generating an executable, and must do a full | |
5079 | relocation. */ | |
b34976b6 | 5080 | hundef = FALSE; |
252b5132 RH |
5081 | |
5082 | if (r_extern) | |
5083 | { | |
5084 | h = sym_hashes[r_index]; | |
5085 | ||
5086 | if (h != (struct aout_link_hash_entry *) NULL | |
5087 | && (h->root.type == bfd_link_hash_defined | |
5088 | || h->root.type == bfd_link_hash_defweak)) | |
5089 | { | |
5090 | relocation = (h->root.u.def.value | |
5091 | + h->root.u.def.section->output_section->vma | |
5092 | + h->root.u.def.section->output_offset); | |
5093 | } | |
5094 | else if (h != (struct aout_link_hash_entry *) NULL | |
5095 | && h->root.type == bfd_link_hash_undefweak) | |
5096 | relocation = 0; | |
5097 | else | |
5098 | { | |
b34976b6 | 5099 | hundef = TRUE; |
252b5132 RH |
5100 | relocation = 0; |
5101 | } | |
5102 | } | |
5103 | else | |
5104 | { | |
5105 | asection *section; | |
5106 | ||
5107 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
5108 | relocation = (section->output_section->vma | |
5109 | + section->output_offset | |
5110 | - section->vma); | |
5111 | if (r_pcrel) | |
5112 | relocation += input_section->vma; | |
5113 | } | |
5114 | ||
5115 | if (check_dynamic_reloc != NULL) | |
5116 | { | |
b34976b6 | 5117 | bfd_boolean skip; |
252b5132 RH |
5118 | |
5119 | if (! ((*check_dynamic_reloc) | |
5120 | (finfo->info, input_bfd, input_section, h, | |
5121 | (PTR) rel, contents, &skip, &relocation))) | |
b34976b6 | 5122 | return FALSE; |
252b5132 RH |
5123 | if (skip) |
5124 | continue; | |
5125 | } | |
5126 | ||
5127 | /* Now warn if a global symbol is undefined. We could not | |
5128 | do this earlier, because check_dynamic_reloc might want | |
5129 | to skip this reloc. */ | |
5130 | if (hundef && ! finfo->info->shared && ! r_baserel) | |
5131 | { | |
5132 | const char *name; | |
5133 | ||
5134 | if (h != NULL) | |
5135 | name = h->root.root.string; | |
5136 | else | |
5137 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
5138 | if (! ((*finfo->info->callbacks->undefined_symbol) | |
5cc7c785 | 5139 | (finfo->info, name, input_bfd, input_section, |
b34976b6 AM |
5140 | r_addr, TRUE))) |
5141 | return FALSE; | |
252b5132 RH |
5142 | } |
5143 | ||
5144 | r = MY_final_link_relocate (howto, | |
5145 | input_bfd, input_section, | |
5146 | contents, r_addr, relocation, | |
5147 | (bfd_vma) 0); | |
5148 | } | |
5149 | ||
5150 | if (r != bfd_reloc_ok) | |
5151 | { | |
5152 | switch (r) | |
5153 | { | |
5154 | default: | |
5155 | case bfd_reloc_outofrange: | |
5156 | abort (); | |
5157 | case bfd_reloc_overflow: | |
5158 | { | |
5159 | const char *name; | |
5160 | ||
5161 | if (h != NULL) | |
dfeffb9f | 5162 | name = NULL; |
252b5132 RH |
5163 | else if (r_extern) |
5164 | name = strings + GET_WORD (input_bfd, | |
5165 | syms[r_index].e_strx); | |
5166 | else | |
5167 | { | |
5168 | asection *s; | |
5169 | ||
5170 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
5171 | name = bfd_section_name (input_bfd, s); | |
5172 | } | |
5173 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
dfeffb9f L |
5174 | (finfo->info, (h ? &h->root : NULL), name, |
5175 | howto->name, (bfd_vma) 0, input_bfd, | |
5176 | input_section, r_addr))) | |
b34976b6 | 5177 | return FALSE; |
252b5132 RH |
5178 | } |
5179 | break; | |
5180 | } | |
5181 | } | |
5182 | } | |
5183 | ||
b34976b6 | 5184 | return TRUE; |
252b5132 RH |
5185 | } |
5186 | ||
5187 | /* Relocate an a.out section using extended a.out relocs. */ | |
5188 | ||
b34976b6 | 5189 | static bfd_boolean |
252b5132 RH |
5190 | aout_link_input_section_ext (finfo, input_bfd, input_section, relocs, |
5191 | rel_size, contents) | |
5192 | struct aout_final_link_info *finfo; | |
5193 | bfd *input_bfd; | |
5194 | asection *input_section; | |
5195 | struct reloc_ext_external *relocs; | |
5196 | bfd_size_type rel_size; | |
5197 | bfd_byte *contents; | |
5198 | { | |
b34976b6 AM |
5199 | bfd_boolean (*check_dynamic_reloc) |
5200 | PARAMS ((struct bfd_link_info *, bfd *, asection *, | |
5201 | struct aout_link_hash_entry *, PTR, bfd_byte *, bfd_boolean *, | |
5202 | bfd_vma *)); | |
252b5132 | 5203 | bfd *output_bfd; |
1049f94e | 5204 | bfd_boolean relocatable; |
252b5132 RH |
5205 | struct external_nlist *syms; |
5206 | char *strings; | |
5207 | struct aout_link_hash_entry **sym_hashes; | |
5208 | int *symbol_map; | |
5209 | bfd_size_type reloc_count; | |
5210 | register struct reloc_ext_external *rel; | |
5211 | struct reloc_ext_external *rel_end; | |
5212 | ||
5213 | output_bfd = finfo->output_bfd; | |
5214 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; | |
5215 | ||
5216 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE); | |
5217 | BFD_ASSERT (input_bfd->xvec->header_byteorder | |
5218 | == output_bfd->xvec->header_byteorder); | |
5219 | ||
1049f94e | 5220 | relocatable = finfo->info->relocatable; |
252b5132 RH |
5221 | syms = obj_aout_external_syms (input_bfd); |
5222 | strings = obj_aout_external_strings (input_bfd); | |
5223 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
5224 | symbol_map = finfo->symbol_map; | |
5225 | ||
5226 | reloc_count = rel_size / RELOC_EXT_SIZE; | |
5227 | rel = relocs; | |
5228 | rel_end = rel + reloc_count; | |
5229 | for (; rel < rel_end; rel++) | |
5230 | { | |
5231 | bfd_vma r_addr; | |
5232 | int r_index; | |
5233 | int r_extern; | |
5234 | unsigned int r_type; | |
5235 | bfd_vma r_addend; | |
5236 | struct aout_link_hash_entry *h = NULL; | |
5237 | asection *r_section = NULL; | |
5238 | bfd_vma relocation; | |
5239 | ||
5240 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
5241 | ||
5242 | if (bfd_header_big_endian (input_bfd)) | |
5243 | { | |
d45913a0 DA |
5244 | r_index = (((unsigned int) rel->r_index[0] << 16) |
5245 | | ((unsigned int) rel->r_index[1] << 8) | |
252b5132 RH |
5246 | | rel->r_index[2]); |
5247 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
5248 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
5249 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
5250 | } | |
5251 | else | |
5252 | { | |
d45913a0 DA |
5253 | r_index = (((unsigned int) rel->r_index[2] << 16) |
5254 | | ((unsigned int) rel->r_index[1] << 8) | |
252b5132 RH |
5255 | | rel->r_index[0]); |
5256 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
5257 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
5258 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
5259 | } | |
5260 | ||
5261 | r_addend = GET_SWORD (input_bfd, rel->r_addend); | |
5262 | ||
5263 | BFD_ASSERT (r_type < TABLE_SIZE (howto_table_ext)); | |
5264 | ||
1049f94e | 5265 | if (relocatable) |
252b5132 | 5266 | { |
1049f94e | 5267 | /* We are generating a relocatable output file, and must |
252b5132 RH |
5268 | modify the reloc accordingly. */ |
5269 | if (r_extern | |
d45913a0 DA |
5270 | || r_type == (unsigned int) RELOC_BASE10 |
5271 | || r_type == (unsigned int) RELOC_BASE13 | |
5272 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
5273 | { |
5274 | /* If we know the symbol this relocation is against, | |
5275 | convert it into a relocation against a section. This | |
5276 | is what the native linker does. */ | |
d45913a0 DA |
5277 | if (r_type == (unsigned int) RELOC_BASE10 |
5278 | || r_type == (unsigned int) RELOC_BASE13 | |
5279 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
5280 | h = NULL; |
5281 | else | |
5282 | h = sym_hashes[r_index]; | |
5283 | if (h != (struct aout_link_hash_entry *) NULL | |
5284 | && (h->root.type == bfd_link_hash_defined | |
5285 | || h->root.type == bfd_link_hash_defweak)) | |
5286 | { | |
5287 | asection *output_section; | |
5288 | ||
5289 | /* Change the r_extern value. */ | |
5290 | if (bfd_header_big_endian (output_bfd)) | |
5291 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG; | |
5292 | else | |
5293 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE; | |
5294 | ||
5295 | /* Compute a new r_index. */ | |
5296 | output_section = h->root.u.def.section->output_section; | |
5297 | if (output_section == obj_textsec (output_bfd)) | |
5298 | r_index = N_TEXT; | |
5299 | else if (output_section == obj_datasec (output_bfd)) | |
5300 | r_index = N_DATA; | |
5301 | else if (output_section == obj_bsssec (output_bfd)) | |
5302 | r_index = N_BSS; | |
5303 | else | |
5304 | r_index = N_ABS; | |
5305 | ||
5306 | /* Add the symbol value and the section VMA to the | |
5307 | addend. */ | |
5308 | relocation = (h->root.u.def.value | |
5309 | + output_section->vma | |
5310 | + h->root.u.def.section->output_offset); | |
5311 | ||
5312 | /* Now RELOCATION is the VMA of the final | |
5313 | destination. If this is a PC relative reloc, | |
5314 | then ADDEND is the negative of the source VMA. | |
5315 | We want to set ADDEND to the difference between | |
5316 | the destination VMA and the source VMA, which | |
5317 | means we must adjust RELOCATION by the change in | |
5318 | the source VMA. This is done below. */ | |
5319 | } | |
5320 | else | |
5321 | { | |
5322 | /* We must change r_index according to the symbol | |
5323 | map. */ | |
5324 | r_index = symbol_map[r_index]; | |
5325 | ||
5326 | if (r_index == -1) | |
5327 | { | |
5328 | if (h != NULL) | |
5329 | { | |
5330 | /* We decided to strip this symbol, but it | |
5331 | turns out that we can't. Note that we | |
5332 | lose the other and desc information here. | |
5333 | I don't think that will ever matter for a | |
5334 | global symbol. */ | |
5335 | if (h->indx < 0) | |
5336 | { | |
5337 | h->indx = -2; | |
b34976b6 | 5338 | h->written = FALSE; |
252b5132 RH |
5339 | if (! aout_link_write_other_symbol (h, |
5340 | (PTR) finfo)) | |
b34976b6 | 5341 | return FALSE; |
252b5132 RH |
5342 | } |
5343 | r_index = h->indx; | |
5344 | } | |
5345 | else | |
5346 | { | |
5347 | const char *name; | |
5348 | ||
5349 | name = strings + GET_WORD (input_bfd, | |
5350 | syms[r_index].e_strx); | |
5351 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
5352 | (finfo->info, name, input_bfd, input_section, | |
5353 | r_addr))) | |
b34976b6 | 5354 | return FALSE; |
252b5132 RH |
5355 | r_index = 0; |
5356 | } | |
5357 | } | |
5358 | ||
5359 | relocation = 0; | |
5360 | ||
5361 | /* If this is a PC relative reloc, then the addend | |
5362 | is the negative of the source VMA. We must | |
5363 | adjust it by the change in the source VMA. This | |
5364 | is done below. */ | |
5365 | } | |
5366 | ||
5367 | /* Write out the new r_index value. */ | |
5368 | if (bfd_header_big_endian (output_bfd)) | |
5369 | { | |
5370 | rel->r_index[0] = r_index >> 16; | |
5371 | rel->r_index[1] = r_index >> 8; | |
5372 | rel->r_index[2] = r_index; | |
5373 | } | |
5374 | else | |
5375 | { | |
5376 | rel->r_index[2] = r_index >> 16; | |
5377 | rel->r_index[1] = r_index >> 8; | |
5378 | rel->r_index[0] = r_index; | |
5379 | } | |
5380 | } | |
5381 | else | |
5382 | { | |
5383 | /* This is a relocation against a section. We must | |
5384 | adjust by the amount that the section moved. */ | |
5385 | r_section = aout_reloc_index_to_section (input_bfd, r_index); | |
5386 | relocation = (r_section->output_section->vma | |
5387 | + r_section->output_offset | |
5388 | - r_section->vma); | |
5389 | ||
5390 | /* If this is a PC relative reloc, then the addend is | |
5391 | the difference in VMA between the destination and the | |
5392 | source. We have just adjusted for the change in VMA | |
5393 | of the destination, so we must also adjust by the | |
5394 | change in VMA of the source. This is done below. */ | |
5395 | } | |
5396 | ||
5397 | /* As described above, we must always adjust a PC relative | |
5398 | reloc by the change in VMA of the source. However, if | |
5399 | pcrel_offset is set, then the addend does not include the | |
5400 | location within the section, in which case we don't need | |
5401 | to adjust anything. */ | |
5402 | if (howto_table_ext[r_type].pc_relative | |
5403 | && ! howto_table_ext[r_type].pcrel_offset) | |
5404 | relocation -= (input_section->output_section->vma | |
5405 | + input_section->output_offset | |
5406 | - input_section->vma); | |
5407 | ||
5408 | /* Change the addend if necessary. */ | |
5409 | if (relocation != 0) | |
5410 | PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend); | |
5411 | ||
5412 | /* Change the address of the relocation. */ | |
5413 | PUT_WORD (output_bfd, | |
5414 | r_addr + input_section->output_offset, | |
5415 | rel->r_address); | |
5416 | } | |
5417 | else | |
5418 | { | |
b34976b6 | 5419 | bfd_boolean hundef; |
252b5132 RH |
5420 | bfd_reloc_status_type r; |
5421 | ||
5422 | /* We are generating an executable, and must do a full | |
5423 | relocation. */ | |
b34976b6 | 5424 | hundef = FALSE; |
252b5132 RH |
5425 | |
5426 | if (r_extern) | |
5427 | { | |
5428 | h = sym_hashes[r_index]; | |
5429 | ||
5430 | if (h != (struct aout_link_hash_entry *) NULL | |
5431 | && (h->root.type == bfd_link_hash_defined | |
5432 | || h->root.type == bfd_link_hash_defweak)) | |
5433 | { | |
5434 | relocation = (h->root.u.def.value | |
5435 | + h->root.u.def.section->output_section->vma | |
5436 | + h->root.u.def.section->output_offset); | |
5437 | } | |
5438 | else if (h != (struct aout_link_hash_entry *) NULL | |
5439 | && h->root.type == bfd_link_hash_undefweak) | |
5440 | relocation = 0; | |
5441 | else | |
5442 | { | |
b34976b6 | 5443 | hundef = TRUE; |
252b5132 RH |
5444 | relocation = 0; |
5445 | } | |
5446 | } | |
d45913a0 DA |
5447 | else if (r_type == (unsigned int) RELOC_BASE10 |
5448 | || r_type == (unsigned int) RELOC_BASE13 | |
5449 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
5450 | { |
5451 | struct external_nlist *sym; | |
5452 | int type; | |
5453 | ||
5454 | /* For base relative relocs, r_index is always an index | |
5455 | into the symbol table, even if r_extern is 0. */ | |
5456 | sym = syms + r_index; | |
dc810e39 | 5457 | type = H_GET_8 (input_bfd, sym->e_type); |
252b5132 RH |
5458 | if ((type & N_TYPE) == N_TEXT |
5459 | || type == N_WEAKT) | |
5460 | r_section = obj_textsec (input_bfd); | |
5461 | else if ((type & N_TYPE) == N_DATA | |
5462 | || type == N_WEAKD) | |
5463 | r_section = obj_datasec (input_bfd); | |
5464 | else if ((type & N_TYPE) == N_BSS | |
5465 | || type == N_WEAKB) | |
5466 | r_section = obj_bsssec (input_bfd); | |
5467 | else if ((type & N_TYPE) == N_ABS | |
5468 | || type == N_WEAKA) | |
5469 | r_section = bfd_abs_section_ptr; | |
5470 | else | |
5471 | abort (); | |
5472 | relocation = (r_section->output_section->vma | |
5473 | + r_section->output_offset | |
5474 | + (GET_WORD (input_bfd, sym->e_value) | |
5475 | - r_section->vma)); | |
5476 | } | |
5477 | else | |
5478 | { | |
5479 | r_section = aout_reloc_index_to_section (input_bfd, r_index); | |
5480 | ||
5481 | /* If this is a PC relative reloc, then R_ADDEND is the | |
5482 | difference between the two vmas, or | |
5483 | old_dest_sec + old_dest_off - (old_src_sec + old_src_off) | |
5484 | where | |
5485 | old_dest_sec == section->vma | |
5486 | and | |
5487 | old_src_sec == input_section->vma | |
5488 | and | |
5489 | old_src_off == r_addr | |
5490 | ||
5491 | _bfd_final_link_relocate expects RELOCATION + | |
5492 | R_ADDEND to be the VMA of the destination minus | |
5493 | r_addr (the minus r_addr is because this relocation | |
5494 | is not pcrel_offset, which is a bit confusing and | |
5495 | should, perhaps, be changed), or | |
5496 | new_dest_sec | |
5497 | where | |
5498 | new_dest_sec == output_section->vma + output_offset | |
5499 | We arrange for this to happen by setting RELOCATION to | |
5500 | new_dest_sec + old_src_sec - old_dest_sec | |
5501 | ||
5502 | If this is not a PC relative reloc, then R_ADDEND is | |
5503 | simply the VMA of the destination, so we set | |
5504 | RELOCATION to the change in the destination VMA, or | |
5505 | new_dest_sec - old_dest_sec | |
5506 | */ | |
5507 | relocation = (r_section->output_section->vma | |
5508 | + r_section->output_offset | |
5509 | - r_section->vma); | |
5510 | if (howto_table_ext[r_type].pc_relative) | |
5511 | relocation += input_section->vma; | |
5512 | } | |
5513 | ||
5514 | if (check_dynamic_reloc != NULL) | |
5515 | { | |
b34976b6 | 5516 | bfd_boolean skip; |
252b5132 RH |
5517 | |
5518 | if (! ((*check_dynamic_reloc) | |
5519 | (finfo->info, input_bfd, input_section, h, | |
5520 | (PTR) rel, contents, &skip, &relocation))) | |
b34976b6 | 5521 | return FALSE; |
252b5132 RH |
5522 | if (skip) |
5523 | continue; | |
5524 | } | |
5525 | ||
5526 | /* Now warn if a global symbol is undefined. We could not | |
5527 | do this earlier, because check_dynamic_reloc might want | |
5528 | to skip this reloc. */ | |
5529 | if (hundef | |
5530 | && ! finfo->info->shared | |
d45913a0 DA |
5531 | && r_type != (unsigned int) RELOC_BASE10 |
5532 | && r_type != (unsigned int) RELOC_BASE13 | |
5533 | && r_type != (unsigned int) RELOC_BASE22) | |
252b5132 RH |
5534 | { |
5535 | const char *name; | |
5536 | ||
5537 | if (h != NULL) | |
5538 | name = h->root.root.string; | |
5539 | else | |
5540 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
5541 | if (! ((*finfo->info->callbacks->undefined_symbol) | |
5cc7c785 | 5542 | (finfo->info, name, input_bfd, input_section, |
b34976b6 AM |
5543 | r_addr, TRUE))) |
5544 | return FALSE; | |
252b5132 RH |
5545 | } |
5546 | ||
d45913a0 | 5547 | if (r_type != (unsigned int) RELOC_SPARC_REV32) |
252b5132 RH |
5548 | r = MY_final_link_relocate (howto_table_ext + r_type, |
5549 | input_bfd, input_section, | |
5550 | contents, r_addr, relocation, | |
5551 | r_addend); | |
5552 | else | |
5553 | { | |
5554 | bfd_vma x; | |
5555 | ||
5556 | x = bfd_get_32 (input_bfd, contents + r_addr); | |
5557 | x = x + relocation + r_addend; | |
5558 | bfd_putl32 (/*input_bfd,*/ x, contents + r_addr); | |
5559 | r = bfd_reloc_ok; | |
5560 | } | |
5561 | ||
5562 | if (r != bfd_reloc_ok) | |
5563 | { | |
5564 | switch (r) | |
5565 | { | |
5566 | default: | |
5567 | case bfd_reloc_outofrange: | |
5568 | abort (); | |
5569 | case bfd_reloc_overflow: | |
5570 | { | |
5571 | const char *name; | |
5572 | ||
5573 | if (h != NULL) | |
dfeffb9f | 5574 | name = NULL; |
252b5132 | 5575 | else if (r_extern |
d45913a0 DA |
5576 | || r_type == (unsigned int) RELOC_BASE10 |
5577 | || r_type == (unsigned int) RELOC_BASE13 | |
5578 | || r_type == (unsigned int) RELOC_BASE22) | |
252b5132 RH |
5579 | name = strings + GET_WORD (input_bfd, |
5580 | syms[r_index].e_strx); | |
5581 | else | |
5582 | { | |
5583 | asection *s; | |
5584 | ||
5585 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
5586 | name = bfd_section_name (input_bfd, s); | |
5587 | } | |
5588 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
dfeffb9f L |
5589 | (finfo->info, (h ? &h->root : NULL), name, |
5590 | howto_table_ext[r_type].name, | |
252b5132 | 5591 | r_addend, input_bfd, input_section, r_addr))) |
b34976b6 | 5592 | return FALSE; |
252b5132 RH |
5593 | } |
5594 | break; | |
5595 | } | |
5596 | } | |
5597 | } | |
5598 | } | |
5599 | ||
b34976b6 | 5600 | return TRUE; |
252b5132 RH |
5601 | } |
5602 | ||
5603 | /* Handle a link order which is supposed to generate a reloc. */ | |
5604 | ||
b34976b6 | 5605 | static bfd_boolean |
252b5132 RH |
5606 | aout_link_reloc_link_order (finfo, o, p) |
5607 | struct aout_final_link_info *finfo; | |
5608 | asection *o; | |
5609 | struct bfd_link_order *p; | |
5610 | { | |
5611 | struct bfd_link_order_reloc *pr; | |
5612 | int r_index; | |
5613 | int r_extern; | |
5614 | reloc_howto_type *howto; | |
7442e600 | 5615 | file_ptr *reloff_ptr = NULL; |
252b5132 RH |
5616 | struct reloc_std_external srel; |
5617 | struct reloc_ext_external erel; | |
5618 | PTR rel_ptr; | |
dc810e39 | 5619 | bfd_size_type amt; |
252b5132 RH |
5620 | |
5621 | pr = p->u.reloc.p; | |
5622 | ||
5623 | if (p->type == bfd_section_reloc_link_order) | |
5624 | { | |
5625 | r_extern = 0; | |
5626 | if (bfd_is_abs_section (pr->u.section)) | |
5627 | r_index = N_ABS | N_EXT; | |
5628 | else | |
5629 | { | |
5630 | BFD_ASSERT (pr->u.section->owner == finfo->output_bfd); | |
5631 | r_index = pr->u.section->target_index; | |
5632 | } | |
5633 | } | |
5634 | else | |
5635 | { | |
5636 | struct aout_link_hash_entry *h; | |
5637 | ||
5638 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); | |
5639 | r_extern = 1; | |
5640 | h = ((struct aout_link_hash_entry *) | |
5641 | bfd_wrapped_link_hash_lookup (finfo->output_bfd, finfo->info, | |
b34976b6 | 5642 | pr->u.name, FALSE, FALSE, TRUE)); |
252b5132 RH |
5643 | if (h != (struct aout_link_hash_entry *) NULL |
5644 | && h->indx >= 0) | |
5645 | r_index = h->indx; | |
5646 | else if (h != NULL) | |
5647 | { | |
5648 | /* We decided to strip this symbol, but it turns out that we | |
5649 | can't. Note that we lose the other and desc information | |
5650 | here. I don't think that will ever matter for a global | |
5651 | symbol. */ | |
5652 | h->indx = -2; | |
b34976b6 | 5653 | h->written = FALSE; |
252b5132 | 5654 | if (! aout_link_write_other_symbol (h, (PTR) finfo)) |
b34976b6 | 5655 | return FALSE; |
252b5132 RH |
5656 | r_index = h->indx; |
5657 | } | |
5658 | else | |
5659 | { | |
5660 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
5661 | (finfo->info, pr->u.name, (bfd *) NULL, | |
5662 | (asection *) NULL, (bfd_vma) 0))) | |
b34976b6 | 5663 | return FALSE; |
252b5132 RH |
5664 | r_index = 0; |
5665 | } | |
5666 | } | |
5667 | ||
5668 | howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc); | |
5669 | if (howto == 0) | |
5670 | { | |
5671 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 5672 | return FALSE; |
252b5132 RH |
5673 | } |
5674 | ||
5675 | if (o == obj_textsec (finfo->output_bfd)) | |
5676 | reloff_ptr = &finfo->treloff; | |
5677 | else if (o == obj_datasec (finfo->output_bfd)) | |
5678 | reloff_ptr = &finfo->dreloff; | |
5679 | else | |
5680 | abort (); | |
5681 | ||
5682 | if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE) | |
5683 | { | |
5684 | #ifdef MY_put_reloc | |
923f08ff AM |
5685 | MY_put_reloc (finfo->output_bfd, r_extern, r_index, p->offset, howto, |
5686 | &srel); | |
252b5132 RH |
5687 | #else |
5688 | { | |
5689 | int r_pcrel; | |
5690 | int r_baserel; | |
5691 | int r_jmptable; | |
5692 | int r_relative; | |
5693 | int r_length; | |
5694 | ||
d45913a0 | 5695 | r_pcrel = (int) howto->pc_relative; |
252b5132 RH |
5696 | r_baserel = (howto->type & 8) != 0; |
5697 | r_jmptable = (howto->type & 16) != 0; | |
5698 | r_relative = (howto->type & 32) != 0; | |
5699 | r_length = howto->size; | |
5700 | ||
5701 | PUT_WORD (finfo->output_bfd, p->offset, srel.r_address); | |
5702 | if (bfd_header_big_endian (finfo->output_bfd)) | |
5703 | { | |
5704 | srel.r_index[0] = r_index >> 16; | |
5705 | srel.r_index[1] = r_index >> 8; | |
5706 | srel.r_index[2] = r_index; | |
5707 | srel.r_type[0] = | |
5708 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
5709 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
5710 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
5711 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
5712 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
5713 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
5714 | } | |
5715 | else | |
5716 | { | |
5717 | srel.r_index[2] = r_index >> 16; | |
5718 | srel.r_index[1] = r_index >> 8; | |
5719 | srel.r_index[0] = r_index; | |
5720 | srel.r_type[0] = | |
5721 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
5722 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
5723 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
5724 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
5725 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
5726 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
5727 | } | |
5728 | } | |
5729 | #endif | |
5730 | rel_ptr = (PTR) &srel; | |
5731 | ||
5732 | /* We have to write the addend into the object file, since | |
5733 | standard a.out relocs are in place. It would be more | |
5734 | reliable if we had the current contents of the file here, | |
5735 | rather than assuming zeroes, but we can't read the file since | |
5736 | it was opened using bfd_openw. */ | |
5737 | if (pr->addend != 0) | |
5738 | { | |
5739 | bfd_size_type size; | |
5740 | bfd_reloc_status_type r; | |
5741 | bfd_byte *buf; | |
b34976b6 | 5742 | bfd_boolean ok; |
252b5132 RH |
5743 | |
5744 | size = bfd_get_reloc_size (howto); | |
5745 | buf = (bfd_byte *) bfd_zmalloc (size); | |
5746 | if (buf == (bfd_byte *) NULL) | |
b34976b6 | 5747 | return FALSE; |
252b5132 | 5748 | r = MY_relocate_contents (howto, finfo->output_bfd, |
dc810e39 | 5749 | (bfd_vma) pr->addend, buf); |
252b5132 RH |
5750 | switch (r) |
5751 | { | |
5752 | case bfd_reloc_ok: | |
5753 | break; | |
5754 | default: | |
5755 | case bfd_reloc_outofrange: | |
5756 | abort (); | |
5757 | case bfd_reloc_overflow: | |
5758 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
dfeffb9f | 5759 | (finfo->info, NULL, |
252b5132 RH |
5760 | (p->type == bfd_section_reloc_link_order |
5761 | ? bfd_section_name (finfo->output_bfd, | |
5762 | pr->u.section) | |
5763 | : pr->u.name), | |
5764 | howto->name, pr->addend, (bfd *) NULL, | |
5765 | (asection *) NULL, (bfd_vma) 0))) | |
5766 | { | |
5767 | free (buf); | |
b34976b6 | 5768 | return FALSE; |
252b5132 RH |
5769 | } |
5770 | break; | |
5771 | } | |
dc810e39 AM |
5772 | ok = bfd_set_section_contents (finfo->output_bfd, o, (PTR) buf, |
5773 | (file_ptr) p->offset, size); | |
252b5132 RH |
5774 | free (buf); |
5775 | if (! ok) | |
b34976b6 | 5776 | return FALSE; |
252b5132 RH |
5777 | } |
5778 | } | |
5779 | else | |
5780 | { | |
1642229e HPN |
5781 | #ifdef MY_put_ext_reloc |
5782 | MY_put_ext_reloc (finfo->output_bfd, r_extern, r_index, p->offset, | |
5783 | howto, &erel, pr->addend); | |
5784 | #else | |
252b5132 RH |
5785 | PUT_WORD (finfo->output_bfd, p->offset, erel.r_address); |
5786 | ||
5787 | if (bfd_header_big_endian (finfo->output_bfd)) | |
5788 | { | |
5789 | erel.r_index[0] = r_index >> 16; | |
5790 | erel.r_index[1] = r_index >> 8; | |
5791 | erel.r_index[2] = r_index; | |
5792 | erel.r_type[0] = | |
5793 | ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
5794 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
5795 | } | |
5796 | else | |
5797 | { | |
5798 | erel.r_index[2] = r_index >> 16; | |
5799 | erel.r_index[1] = r_index >> 8; | |
5800 | erel.r_index[0] = r_index; | |
5801 | erel.r_type[0] = | |
5802 | (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
5803 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
5804 | } | |
5805 | ||
dc810e39 | 5806 | PUT_WORD (finfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend); |
1642229e | 5807 | #endif /* MY_put_ext_reloc */ |
252b5132 RH |
5808 | |
5809 | rel_ptr = (PTR) &erel; | |
5810 | } | |
5811 | ||
dc810e39 | 5812 | amt = obj_reloc_entry_size (finfo->output_bfd); |
252b5132 | 5813 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 |
dc810e39 | 5814 | || bfd_bwrite (rel_ptr, amt, finfo->output_bfd) != amt) |
b34976b6 | 5815 | return FALSE; |
252b5132 RH |
5816 | |
5817 | *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd); | |
5818 | ||
5819 | /* Assert that the relocs have not run into the symbols, and that n | |
5820 | the text relocs have not run into the data relocs. */ | |
5821 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
5822 | && (reloff_ptr != &finfo->treloff | |
5823 | || (*reloff_ptr | |
5824 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
5825 | ||
b34976b6 | 5826 | return TRUE; |
252b5132 | 5827 | } |