Commit | Line | Data |
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1f29e30b | 1 | /* BFD semi-generic back-end for a.out binaries. |
508539ab | 2 | Copyright 1990, 91, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc. |
88dfcd68 | 3 | Written by Cygnus Support. |
7ed4093a | 4 | |
88dfcd68 | 5 | This file is part of BFD, the Binary File Descriptor library. |
7ed4093a | 6 | |
88dfcd68 | 7 | This program is free software; you can redistribute it and/or modify |
7ed4093a | 8 | it under the terms of the GNU General Public License as published by |
88dfcd68 SC |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
7ed4093a | 11 | |
88dfcd68 | 12 | This program is distributed in the hope that it will be useful, |
7ed4093a SC |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
88dfcd68 | 18 | along with this program; if not, write to the Free Software |
943fbd5b | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
7ed4093a | 20 | |
4e41b5aa SC |
21 | /* |
22 | SECTION | |
23 | a.out backends | |
6f715d66 | 24 | |
6f715d66 | 25 | |
4e41b5aa | 26 | DESCRIPTION |
6f715d66 | 27 | |
4e41b5aa SC |
28 | BFD supports a number of different flavours of a.out format, |
29 | though the major differences are only the sizes of the | |
30 | structures on disk, and the shape of the relocation | |
c188b0be | 31 | information. |
6f715d66 | 32 | |
c188b0be | 33 | The support is split into a basic support file @file{aoutx.h} |
4e41b5aa | 34 | and other files which derive functions from the base. One |
c188b0be | 35 | derivation file is @file{aoutf1.h} (for a.out flavour 1), and |
4e41b5aa SC |
36 | adds to the basic a.out functions support for sun3, sun4, 386 |
37 | and 29k a.out files, to create a target jump vector for a | |
c188b0be | 38 | specific target. |
6f715d66 | 39 | |
4e41b5aa | 40 | This information is further split out into more specific files |
c188b0be DM |
41 | for each machine, including @file{sunos.c} for sun3 and sun4, |
42 | @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a | |
4e41b5aa SC |
43 | demonstration of a 64 bit a.out format. |
44 | ||
c188b0be DM |
45 | The base file @file{aoutx.h} defines general mechanisms for |
46 | reading and writing records to and from disk and various | |
4e41b5aa | 47 | other methods which BFD requires. It is included by |
c188b0be DM |
48 | @file{aout32.c} and @file{aout64.c} to form the names |
49 | <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc. | |
4e41b5aa SC |
50 | |
51 | As an example, this is what goes on to make the back end for a | |
c188b0be | 52 | sun4, from @file{aout32.c}: |
4e41b5aa | 53 | |
3f7607af PB |
54 | | #define ARCH_SIZE 32 |
55 | | #include "aoutx.h" | |
4e41b5aa SC |
56 | |
57 | Which exports names: | |
58 | ||
3f7607af PB |
59 | | ... |
60 | | aout_32_canonicalize_reloc | |
61 | | aout_32_find_nearest_line | |
62 | | aout_32_get_lineno | |
63 | | aout_32_get_reloc_upper_bound | |
64 | | ... | |
6f715d66 | 65 | |
c188b0be | 66 | from @file{sunos.c}: |
4e41b5aa | 67 | |
3f7607af PB |
68 | | #define TARGET_NAME "a.out-sunos-big" |
69 | | #define VECNAME sunos_big_vec | |
70 | | #include "aoutf1.h" | |
4e41b5aa | 71 | |
c188b0be | 72 | requires all the names from @file{aout32.c}, and produces the jump vector |
6f715d66 | 73 | |
3f7607af | 74 | | sunos_big_vec |
c6705697 | 75 | |
c188b0be | 76 | The file @file{host-aout.c} is a special case. It is for a large set |
4e41b5aa SC |
77 | of hosts that use ``more or less standard'' a.out files, and |
78 | for which cross-debugging is not interesting. It uses the | |
79 | standard 32-bit a.out support routines, but determines the | |
80 | file offsets and addresses of the text, data, and BSS | |
81 | sections, the machine architecture and machine type, and the | |
82 | entry point address, in a host-dependent manner. Once these | |
83 | values have been determined, generic code is used to handle | |
c188b0be | 84 | the object file. |
c6705697 | 85 | |
4e41b5aa SC |
86 | When porting it to run on a new system, you must supply: |
87 | ||
3f7607af PB |
88 | | HOST_PAGE_SIZE |
89 | | HOST_SEGMENT_SIZE | |
90 | | HOST_MACHINE_ARCH (optional) | |
91 | | HOST_MACHINE_MACHINE (optional) | |
92 | | HOST_TEXT_START_ADDR | |
93 | | HOST_STACK_END_ADDR | |
c6705697 | 94 | |
4c3721d5 ILT |
95 | in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These |
96 | values, plus the structures and macros defined in @file{a.out.h} on | |
4e41b5aa SC |
97 | your host system, will produce a BFD target that will access |
98 | ordinary a.out files on your host. To configure a new machine | |
4c3721d5 | 99 | to use @file{host-aout.c}, specify: |
c6705697 | 100 | |
3f7607af PB |
101 | | TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec |
102 | | TDEPFILES= host-aout.o trad-core.o | |
c6705697 | 103 | |
4c3721d5 ILT |
104 | in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in} |
105 | to use the | |
106 | @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your | |
4e41b5aa | 107 | configuration is selected. |
c6705697 | 108 | |
6f715d66 SC |
109 | */ |
110 | ||
ce07dd7c KR |
111 | /* Some assumptions: |
112 | * Any BFD with D_PAGED set is ZMAGIC, and vice versa. | |
113 | Doesn't matter what the setting of WP_TEXT is on output, but it'll | |
114 | get set on input. | |
115 | * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC. | |
116 | * Any BFD with both flags clear is OMAGIC. | |
117 | (Just want to make these explicit, so the conditions tested in this | |
118 | file make sense if you're more familiar with a.out than with BFD.) */ | |
119 | ||
ae115e51 | 120 | #define KEEPIT udata.i |
67c060c3 | 121 | |
a99c3d70 | 122 | #include <string.h> /* For strchr and friends */ |
14dc2f77 | 123 | #include <ctype.h> |
67c060c3 | 124 | #include "bfd.h" |
7ed4093a | 125 | #include <sysdep.h> |
4c3721d5 | 126 | #include "bfdlink.h" |
7ed4093a | 127 | |
6f715d66 | 128 | #include "libaout.h" |
7ed4093a | 129 | #include "libbfd.h" |
c3eb25fc SC |
130 | #include "aout/aout64.h" |
131 | #include "aout/stab_gnu.h" | |
132 | #include "aout/ar.h" | |
7ed4093a | 133 | |
5c8444f8 | 134 | static boolean aout_get_external_symbols PARAMS ((bfd *)); |
4298e311 ILT |
135 | static boolean translate_from_native_sym_flags |
136 | PARAMS ((bfd *, aout_symbol_type *)); | |
137 | static boolean translate_to_native_sym_flags | |
138 | PARAMS ((bfd *, asymbol *, struct external_nlist *)); | |
6ccdc203 ILT |
139 | static void adjust_o_magic PARAMS ((bfd *, struct internal_exec *)); |
140 | static void adjust_z_magic PARAMS ((bfd *, struct internal_exec *)); | |
141 | static void adjust_n_magic PARAMS ((bfd *, struct internal_exec *)); | |
0ee75d02 | 142 | |
4e41b5aa SC |
143 | /* |
144 | SUBSECTION | |
4c3721d5 | 145 | Relocations |
4e41b5aa SC |
146 | |
147 | DESCRIPTION | |
c188b0be | 148 | The file @file{aoutx.h} provides for both the @emph{standard} |
4e41b5aa SC |
149 | and @emph{extended} forms of a.out relocation records. |
150 | ||
c188b0be DM |
151 | The standard records contain only an |
152 | address, a symbol index, and a type field. The extended records | |
4e41b5aa | 153 | (used on 29ks and sparcs) also have a full integer for an |
c188b0be | 154 | addend. |
7ed4093a | 155 | |
6f715d66 | 156 | */ |
f42fe159 | 157 | #ifndef CTOR_TABLE_RELOC_HOWTO |
7ed4093a | 158 | #define CTOR_TABLE_RELOC_IDX 2 |
f42fe159 ILT |
159 | #define CTOR_TABLE_RELOC_HOWTO(BFD) ((obj_reloc_entry_size(BFD) == RELOC_EXT_SIZE \ |
160 | ? howto_table_ext : howto_table_std) \ | |
161 | + CTOR_TABLE_RELOC_IDX) | |
162 | #endif | |
163 | ||
164 | #ifndef MY_swap_std_reloc_in | |
165 | #define MY_swap_std_reloc_in NAME(aout,swap_std_reloc_in) | |
166 | #endif | |
167 | ||
168 | #ifndef MY_swap_std_reloc_out | |
169 | #define MY_swap_std_reloc_out NAME(aout,swap_std_reloc_out) | |
170 | #endif | |
67c060c3 | 171 | |
34e9ffbc NH |
172 | #ifndef MY_final_link_relocate |
173 | #define MY_final_link_relocate _bfd_final_link_relocate | |
174 | #endif | |
175 | ||
176 | #ifndef MY_relocate_contents | |
177 | #define MY_relocate_contents _bfd_relocate_contents | |
178 | #endif | |
179 | ||
ce07dd7c KR |
180 | #define howto_table_ext NAME(aout,ext_howto_table) |
181 | #define howto_table_std NAME(aout,std_howto_table) | |
67c060c3 | 182 | |
c188b0be | 183 | reloc_howto_type howto_table_ext[] = |
7ed4093a | 184 | { |
4c3721d5 | 185 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */ |
2e235c93 ILT |
186 | HOWTO(RELOC_8, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", false, 0,0x000000ff, false), |
187 | HOWTO(RELOC_16, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", false, 0,0x0000ffff, false), | |
188 | HOWTO(RELOC_32, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", false, 0,0xffffffff, false), | |
189 | HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, complain_overflow_signed,0,"DISP8", false, 0,0x000000ff, false), | |
190 | HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, complain_overflow_signed,0,"DISP16", false, 0,0x0000ffff, false), | |
191 | HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, complain_overflow_signed,0,"DISP32", false, 0,0xffffffff, false), | |
192 | HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, complain_overflow_signed,0,"WDISP30", false, 0,0x3fffffff, false), | |
193 | HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, complain_overflow_signed,0,"WDISP22", false, 0,0x003fffff, false), | |
194 | HOWTO(RELOC_HI22, 10, 2, 22, false, 0, complain_overflow_bitfield,0,"HI22", false, 0,0x003fffff, false), | |
195 | HOWTO(RELOC_22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"22", false, 0,0x003fffff, false), | |
196 | HOWTO(RELOC_13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"13", false, 0,0x00001fff, false), | |
197 | HOWTO(RELOC_LO10, 0, 2, 10, false, 0, complain_overflow_dont,0,"LO10", false, 0,0x000003ff, false), | |
198 | HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, complain_overflow_bitfield,0,"SFA_BASE", false, 0,0xffffffff, false), | |
199 | HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, complain_overflow_bitfield,0,"SFA_OFF13",false, 0,0xffffffff, false), | |
20ab764e | 200 | HOWTO(RELOC_BASE10, 0, 2, 10, false, 0, complain_overflow_dont,0,"BASE10", false, 0,0x000003ff, false), |
2e235c93 | 201 | HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"BASE13", false, 0,0x00001fff, false), |
20ab764e | 202 | HOWTO(RELOC_BASE22, 10, 2, 22, false, 0, complain_overflow_bitfield,0,"BASE22", false, 0,0x003fffff, false), |
ae115e51 ILT |
203 | HOWTO(RELOC_PC10, 0, 2, 10, true, 0, complain_overflow_dont,0,"PC10", false, 0,0x000003ff, true), |
204 | HOWTO(RELOC_PC22, 10, 2, 22, true, 0, complain_overflow_signed,0,"PC22", false, 0,0x003fffff, true), | |
205 | HOWTO(RELOC_JMP_TBL,2, 2, 30, true, 0, complain_overflow_signed,0,"JMP_TBL", false, 0,0x3fffffff, false), | |
2e235c93 ILT |
206 | HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, complain_overflow_bitfield,0,"SEGOFF16", false, 0,0x00000000, false), |
207 | HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"GLOB_DAT", false, 0,0x00000000, false), | |
208 | HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_SLOT", false, 0,0x00000000, false), | |
209 | HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false), | |
7ed4093a SC |
210 | }; |
211 | ||
212 | /* Convert standard reloc records to "arelent" format (incl byte swap). */ | |
213 | ||
ce07dd7c | 214 | reloc_howto_type howto_table_std[] = { |
4c3721d5 | 215 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */ |
c188b0be | 216 | HOWTO( 0, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", true, 0x000000ff,0x000000ff, false), |
2e235c93 ILT |
217 | HOWTO( 1, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", true, 0x0000ffff,0x0000ffff, false), |
218 | HOWTO( 2, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", true, 0xffffffff,0xffffffff, false), | |
c188b0be DM |
219 | HOWTO( 3, 0, 4, 64, false, 0, complain_overflow_bitfield,0,"64", true, 0xdeaddead,0xdeaddead, false), |
220 | HOWTO( 4, 0, 0, 8, true, 0, complain_overflow_signed, 0,"DISP8", true, 0x000000ff,0x000000ff, false), | |
221 | HOWTO( 5, 0, 1, 16, true, 0, complain_overflow_signed, 0,"DISP16", true, 0x0000ffff,0x0000ffff, false), | |
222 | HOWTO( 6, 0, 2, 32, true, 0, complain_overflow_signed, 0,"DISP32", true, 0xffffffff,0xffffffff, false), | |
223 | HOWTO( 7, 0, 4, 64, true, 0, complain_overflow_signed, 0,"DISP64", true, 0xfeedface,0xfeedface, false), | |
4852416e | 224 | HOWTO( 8, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"GOT_REL", false, 0,0x00000000, false), |
c188b0be DM |
225 | HOWTO( 9, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"BASE16", false,0xffffffff,0xffffffff, false), |
226 | HOWTO(10, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"BASE32", false,0xffffffff,0xffffffff, false), | |
cb9461ff JK |
227 | { -1 }, |
228 | { -1 }, | |
229 | { -1 }, | |
230 | { -1 }, | |
231 | { -1 }, | |
232 | HOWTO(16, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_TABLE", false, 0,0x00000000, false), | |
233 | { -1 }, | |
234 | { -1 }, | |
235 | { -1 }, | |
236 | { -1 }, | |
237 | { -1 }, | |
238 | { -1 }, | |
239 | { -1 }, | |
240 | { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, | |
241 | HOWTO(32, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false), | |
242 | { -1 }, | |
243 | { -1 }, | |
244 | { -1 }, | |
245 | { -1 }, | |
246 | { -1 }, | |
247 | { -1 }, | |
248 | { -1 }, | |
249 | HOWTO(40, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASEREL", false, 0,0x00000000, false), | |
7ed4093a SC |
250 | }; |
251 | ||
c188b0be DM |
252 | #define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0])) |
253 | ||
51fbf454 | 254 | reloc_howto_type * |
8eb5d4be JK |
255 | NAME(aout,reloc_type_lookup) (abfd,code) |
256 | bfd *abfd; | |
257 | bfd_reloc_code_real_type code; | |
214f8f23 KR |
258 | { |
259 | #define EXT(i,j) case i: return &howto_table_ext[j] | |
260 | #define STD(i,j) case i: return &howto_table_std[j] | |
261 | int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE; | |
262 | if (code == BFD_RELOC_CTOR) | |
263 | switch (bfd_get_arch_info (abfd)->bits_per_address) | |
264 | { | |
265 | case 32: | |
266 | code = BFD_RELOC_32; | |
267 | break; | |
ec099b4b ILT |
268 | case 64: |
269 | code = BFD_RELOC_64; | |
270 | break; | |
214f8f23 KR |
271 | } |
272 | if (ext) | |
273 | switch (code) | |
274 | { | |
275 | EXT (BFD_RELOC_32, 2); | |
276 | EXT (BFD_RELOC_HI22, 8); | |
277 | EXT (BFD_RELOC_LO10, 11); | |
278 | EXT (BFD_RELOC_32_PCREL_S2, 6); | |
c188b0be | 279 | EXT (BFD_RELOC_SPARC_WDISP22, 7); |
ec099b4b | 280 | EXT (BFD_RELOC_SPARC13, 10); |
ae115e51 | 281 | EXT (BFD_RELOC_SPARC_GOT10, 14); |
ec099b4b | 282 | EXT (BFD_RELOC_SPARC_BASE13, 15); |
ae115e51 ILT |
283 | EXT (BFD_RELOC_SPARC_GOT13, 15); |
284 | EXT (BFD_RELOC_SPARC_GOT22, 16); | |
285 | EXT (BFD_RELOC_SPARC_PC10, 17); | |
286 | EXT (BFD_RELOC_SPARC_PC22, 18); | |
287 | EXT (BFD_RELOC_SPARC_WPLT30, 19); | |
51fbf454 | 288 | default: return (reloc_howto_type *) NULL; |
214f8f23 KR |
289 | } |
290 | else | |
291 | /* std relocs */ | |
292 | switch (code) | |
293 | { | |
294 | STD (BFD_RELOC_16, 1); | |
295 | STD (BFD_RELOC_32, 2); | |
296 | STD (BFD_RELOC_8_PCREL, 4); | |
297 | STD (BFD_RELOC_16_PCREL, 5); | |
298 | STD (BFD_RELOC_32_PCREL, 6); | |
c188b0be DM |
299 | STD (BFD_RELOC_16_BASEREL, 9); |
300 | STD (BFD_RELOC_32_BASEREL, 10); | |
51fbf454 | 301 | default: return (reloc_howto_type *) NULL; |
214f8f23 | 302 | } |
214f8f23 | 303 | } |
7ed4093a | 304 | |
4e41b5aa SC |
305 | /* |
306 | SUBSECTION | |
4c3721d5 | 307 | Internal entry points |
4e41b5aa SC |
308 | |
309 | DESCRIPTION | |
c188b0be | 310 | @file{aoutx.h} exports several routines for accessing the |
4e41b5aa SC |
311 | contents of an a.out file, which are gathered and exported in |
312 | turn by various format specific files (eg sunos.c). | |
313 | ||
6f715d66 SC |
314 | */ |
315 | ||
4e41b5aa SC |
316 | /* |
317 | FUNCTION | |
c188b0be | 318 | aout_@var{size}_swap_exec_header_in |
4e41b5aa | 319 | |
fa2b89f1 | 320 | SYNOPSIS |
c188b0be | 321 | void aout_@var{size}_swap_exec_header_in, |
4e41b5aa SC |
322 | (bfd *abfd, |
323 | struct external_exec *raw_bytes, | |
324 | struct internal_exec *execp); | |
c188b0be DM |
325 | |
326 | DESCRIPTION | |
327 | Swap the information in an executable header @var{raw_bytes} taken | |
328 | from a raw byte stream memory image into the internal exec header | |
329 | structure @var{execp}. | |
6f715d66 | 330 | */ |
c188b0be | 331 | |
34dd8ba3 | 332 | #ifndef NAME_swap_exec_header_in |
7ed4093a | 333 | void |
8eb5d4be JK |
334 | NAME(aout,swap_exec_header_in) (abfd, raw_bytes, execp) |
335 | bfd *abfd; | |
336 | struct external_exec *raw_bytes; | |
337 | struct internal_exec *execp; | |
7ed4093a SC |
338 | { |
339 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
340 | ||
55c0061e FF |
341 | /* The internal_exec structure has some fields that are unused in this |
342 | configuration (IE for i960), so ensure that all such uninitialized | |
343 | fields are zero'd out. There are places where two of these structs | |
344 | are memcmp'd, and thus the contents do matter. */ | |
68241b2b | 345 | memset ((PTR) execp, 0, sizeof (struct internal_exec)); |
7ed4093a SC |
346 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
347 | execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); | |
348 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
349 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
350 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
351 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
352 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
353 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); | |
354 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
355 | } | |
34dd8ba3 JG |
356 | #define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in) |
357 | #endif | |
7ed4093a | 358 | |
4e41b5aa SC |
359 | /* |
360 | FUNCTION | |
c188b0be | 361 | aout_@var{size}_swap_exec_header_out |
4e41b5aa | 362 | |
fa2b89f1 | 363 | SYNOPSIS |
c188b0be | 364 | void aout_@var{size}_swap_exec_header_out |
6f715d66 SC |
365 | (bfd *abfd, |
366 | struct internal_exec *execp, | |
4e41b5aa | 367 | struct external_exec *raw_bytes); |
c188b0be DM |
368 | |
369 | DESCRIPTION | |
370 | Swap the information in an internal exec header structure | |
371 | @var{execp} into the buffer @var{raw_bytes} ready for writing to disk. | |
6f715d66 | 372 | */ |
7ed4093a | 373 | void |
8eb5d4be JK |
374 | NAME(aout,swap_exec_header_out) (abfd, execp, raw_bytes) |
375 | bfd *abfd; | |
376 | struct internal_exec *execp; | |
377 | struct external_exec *raw_bytes; | |
7ed4093a SC |
378 | { |
379 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
380 | ||
381 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ | |
382 | bfd_h_put_32 (abfd, execp->a_info , bytes->e_info); | |
383 | PUT_WORD (abfd, execp->a_text , bytes->e_text); | |
384 | PUT_WORD (abfd, execp->a_data , bytes->e_data); | |
385 | PUT_WORD (abfd, execp->a_bss , bytes->e_bss); | |
386 | PUT_WORD (abfd, execp->a_syms , bytes->e_syms); | |
387 | PUT_WORD (abfd, execp->a_entry , bytes->e_entry); | |
388 | PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); | |
389 | PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); | |
390 | } | |
391 | ||
ec6b18c4 | 392 | /* Make all the section for an a.out file. */ |
7ed4093a | 393 | |
ec6b18c4 ILT |
394 | boolean |
395 | NAME(aout,make_sections) (abfd) | |
396 | bfd *abfd; | |
397 | { | |
398 | if (obj_textsec (abfd) == (asection *) NULL | |
399 | && bfd_make_section (abfd, ".text") == (asection *) NULL) | |
400 | return false; | |
401 | if (obj_datasec (abfd) == (asection *) NULL | |
402 | && bfd_make_section (abfd, ".data") == (asection *) NULL) | |
403 | return false; | |
404 | if (obj_bsssec (abfd) == (asection *) NULL | |
405 | && bfd_make_section (abfd, ".bss") == (asection *) NULL) | |
406 | return false; | |
407 | return true; | |
408 | } | |
6f715d66 | 409 | |
4e41b5aa SC |
410 | /* |
411 | FUNCTION | |
c188b0be | 412 | aout_@var{size}_some_aout_object_p |
6f715d66 | 413 | |
fa2b89f1 | 414 | SYNOPSIS |
2f3508ad | 415 | const bfd_target *aout_@var{size}_some_aout_object_p |
6f715d66 | 416 | (bfd *abfd, |
2f3508ad | 417 | const bfd_target *(*callback_to_real_object_p)()); |
c188b0be DM |
418 | |
419 | DESCRIPTION | |
420 | Some a.out variant thinks that the file open in @var{abfd} | |
421 | checking is an a.out file. Do some more checking, and set up | |
422 | for access if it really is. Call back to the calling | |
423 | environment's "finish up" function just before returning, to | |
424 | handle any last-minute setup. | |
6f715d66 | 425 | */ |
c188b0be | 426 | |
2f3508ad | 427 | const bfd_target * |
8eb5d4be JK |
428 | NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p) |
429 | bfd *abfd; | |
430 | struct internal_exec *execp; | |
2f3508ad | 431 | const bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *)); |
7ed4093a | 432 | { |
214f8f23 | 433 | struct aout_data_struct *rawptr, *oldrawptr; |
2f3508ad | 434 | const bfd_target *result; |
7ed4093a | 435 | |
6db82ea7 | 436 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (struct aout_data_struct )); |
a9713b91 | 437 | if (rawptr == NULL) |
7ed4093a | 438 | return 0; |
7ed4093a | 439 | |
214f8f23 | 440 | oldrawptr = abfd->tdata.aout_data; |
6db82ea7 | 441 | abfd->tdata.aout_data = rawptr; |
ebd24135 ILT |
442 | |
443 | /* Copy the contents of the old tdata struct. | |
444 | In particular, we want the subformat, since for hpux it was set in | |
445 | hp300hpux.c:swap_exec_header_in and will be used in | |
446 | hp300hpux.c:callback. */ | |
447 | if (oldrawptr != NULL) | |
448 | *abfd->tdata.aout_data = *oldrawptr; | |
449 | ||
6db82ea7 SC |
450 | abfd->tdata.aout_data->a.hdr = &rawptr->e; |
451 | *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */ | |
452 | execp = abfd->tdata.aout_data->a.hdr; | |
7ed4093a SC |
453 | |
454 | /* Set the file flags */ | |
167dc907 | 455 | abfd->flags = BFD_NO_FLAGS; |
7ed4093a SC |
456 | if (execp->a_drsize || execp->a_trsize) |
457 | abfd->flags |= HAS_RELOC; | |
e6e265ce | 458 | /* Setting of EXEC_P has been deferred to the bottom of this function */ |
c188b0be | 459 | if (execp->a_syms) |
7ed4093a | 460 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; |
e68de5d5 ILT |
461 | if (N_DYNAMIC(*execp)) |
462 | abfd->flags |= DYNAMIC; | |
7ed4093a | 463 | |
ce07dd7c KR |
464 | if (N_MAGIC (*execp) == ZMAGIC) |
465 | { | |
f5419a59 ILT |
466 | abfd->flags |= D_PAGED | WP_TEXT; |
467 | adata (abfd).magic = z_magic; | |
468 | } | |
469 | else if (N_MAGIC (*execp) == QMAGIC) | |
470 | { | |
471 | abfd->flags |= D_PAGED | WP_TEXT; | |
472 | adata (abfd).magic = z_magic; | |
473 | adata (abfd).subformat = q_magic_format; | |
ce07dd7c KR |
474 | } |
475 | else if (N_MAGIC (*execp) == NMAGIC) | |
476 | { | |
477 | abfd->flags |= WP_TEXT; | |
f5419a59 | 478 | adata (abfd).magic = n_magic; |
ce07dd7c | 479 | } |
7b024321 ILT |
480 | else if (N_MAGIC (*execp) == OMAGIC |
481 | || N_MAGIC (*execp) == BMAGIC) | |
f5419a59 | 482 | adata (abfd).magic = o_magic; |
ce07dd7c | 483 | else |
f5419a59 ILT |
484 | { |
485 | /* Should have been checked with N_BADMAG before this routine | |
486 | was called. */ | |
487 | abort (); | |
488 | } | |
7ed4093a SC |
489 | |
490 | bfd_get_start_address (abfd) = execp->a_entry; | |
491 | ||
492 | obj_aout_symbols (abfd) = (aout_symbol_type *)NULL; | |
493 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); | |
494 | ||
7ed4093a SC |
495 | /* The default relocation entry size is that of traditional V7 Unix. */ |
496 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
497 | ||
7b02b4ed JG |
498 | /* The default symbol entry size is that of traditional Unix. */ |
499 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; | |
500 | ||
7ac84736 | 501 | #ifdef USE_MMAP |
4fe6d901 | 502 | bfd_init_window (&obj_aout_sym_window (abfd)); |
4fe6d901 | 503 | bfd_init_window (&obj_aout_string_window (abfd)); |
7ac84736 KR |
504 | #endif |
505 | obj_aout_external_syms (abfd) = NULL; | |
506 | obj_aout_external_strings (abfd) = NULL; | |
728472f1 ILT |
507 | obj_aout_sym_hashes (abfd) = NULL; |
508 | ||
ec6b18c4 ILT |
509 | if (! NAME(aout,make_sections) (abfd)) |
510 | return NULL; | |
7ed4093a | 511 | |
6db82ea7 SC |
512 | obj_datasec (abfd)->_raw_size = execp->a_data; |
513 | obj_bsssec (abfd)->_raw_size = execp->a_bss; | |
7ed4093a | 514 | |
0ee75d02 | 515 | obj_textsec (abfd)->flags = |
11676adc | 516 | (execp->a_trsize != 0 |
0ee75d02 ILT |
517 | ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) |
518 | : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); | |
519 | obj_datasec (abfd)->flags = | |
11676adc | 520 | (execp->a_drsize != 0 |
0ee75d02 ILT |
521 | ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) |
522 | : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); | |
7ed4093a SC |
523 | obj_bsssec (abfd)->flags = SEC_ALLOC; |
524 | ||
525 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
98d43107 JG |
526 | /* The common code can't fill in these things because they depend |
527 | on either the start address of the text segment, the rounding | |
9783e04a | 528 | up of virtual addresses between segments, or the starting file |
98d43107 JG |
529 | position of the text segment -- all of which varies among different |
530 | versions of a.out. */ | |
531 | ||
c188b0be | 532 | /* Call back to the format-dependent code to fill in the rest of the |
7ed4093a SC |
533 | fields and do any further cleanup. Things that should be filled |
534 | in by the callback: */ | |
535 | ||
536 | struct exec *execp = exec_hdr (abfd); | |
537 | ||
98d43107 | 538 | obj_textsec (abfd)->size = N_TXTSIZE(*execp); |
6db82ea7 | 539 | obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp); |
98d43107 JG |
540 | /* data and bss are already filled in since they're so standard */ |
541 | ||
7ed4093a | 542 | /* The virtual memory addresses of the sections */ |
7ed4093a | 543 | obj_textsec (abfd)->vma = N_TXTADDR(*execp); |
98d43107 JG |
544 | obj_datasec (abfd)->vma = N_DATADDR(*execp); |
545 | obj_bsssec (abfd)->vma = N_BSSADDR(*execp); | |
7ed4093a SC |
546 | |
547 | /* The file offsets of the sections */ | |
548 | obj_textsec (abfd)->filepos = N_TXTOFF(*execp); | |
549 | obj_datasec (abfd)->filepos = N_DATOFF(*execp); | |
550 | ||
551 | /* The file offsets of the relocation info */ | |
552 | obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); | |
553 | obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); | |
554 | ||
555 | /* The file offsets of the string table and symbol table. */ | |
556 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
557 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
558 | ||
7ed4093a SC |
559 | /* Determine the architecture and machine type of the object file. */ |
560 | switch (N_MACHTYPE (*exec_hdr (abfd))) { | |
561 | default: | |
562 | abfd->obj_arch = bfd_arch_obscure; | |
563 | break; | |
564 | } | |
565 | ||
34e9ffbc | 566 | adata(abfd)->page_size = TARGET_PAGE_SIZE; |
7b02b4ed JG |
567 | adata(abfd)->segment_size = SEGMENT_SIZE; |
568 | adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
569 | ||
7ed4093a SC |
570 | return abfd->xvec; |
571 | ||
572 | /* The architecture is encoded in various ways in various a.out variants, | |
573 | or is not encoded at all in some of them. The relocation size depends | |
574 | on the architecture and the a.out variant. Finally, the return value | |
575 | is the bfd_target vector in use. If an error occurs, return zero and | |
576 | set bfd_error to the appropriate error code. | |
c188b0be | 577 | |
7ed4093a SC |
578 | Formats such as b.out, which have additional fields in the a.out |
579 | header, should cope with them in this callback as well. */ | |
580 | #endif /* DOCUMENTATION */ | |
581 | ||
e6e265ce JG |
582 | result = (*callback_to_real_object_p)(abfd); |
583 | ||
584 | /* Now that the segment addresses have been worked out, take a better | |
585 | guess at whether the file is executable. If the entry point | |
586 | is within the text segment, assume it is. (This makes files | |
587 | executable even if their entry point address is 0, as long as | |
6ccdc203 ILT |
588 | their text starts at zero.). |
589 | ||
590 | This test had to be changed to deal with systems where the text segment | |
591 | runs at a different location than the default. The problem is that the | |
592 | entry address can appear to be outside the text segment, thus causing an | |
593 | erroneous conclusion that the file isn't executable. | |
594 | ||
595 | To fix this, we now accept any non-zero entry point as an indication of | |
596 | executability. This will work most of the time, since only the linker | |
597 | sets the entry point, and that is likely to be non-zero for most systems. */ | |
598 | ||
599 | if (execp->a_entry != 0 | |
600 | || (execp->a_entry >= obj_textsec(abfd)->vma | |
601 | && execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size)) | |
e6e265ce | 602 | abfd->flags |= EXEC_P; |
6c97aedf ILT |
603 | #ifdef STAT_FOR_EXEC |
604 | else | |
605 | { | |
606 | struct stat stat_buf; | |
607 | ||
608 | /* The original heuristic doesn't work in some important cases. | |
609 | The a.out file has no information about the text start | |
610 | address. For files (like kernels) linked to non-standard | |
611 | addresses (ld -Ttext nnn) the entry point may not be between | |
612 | the default text start (obj_textsec(abfd)->vma) and | |
613 | (obj_textsec(abfd)->vma) + text size. This is not just a mach | |
614 | issue. Many kernels are loaded at non standard addresses. */ | |
64d5f5d0 ILT |
615 | if (abfd->iostream != NULL |
616 | && (abfd->flags & BFD_IN_MEMORY) == 0 | |
6c97aedf ILT |
617 | && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0) |
618 | && ((stat_buf.st_mode & 0111) != 0)) | |
619 | abfd->flags |= EXEC_P; | |
620 | } | |
621 | #endif /* STAT_FOR_EXEC */ | |
622 | ||
214f8f23 KR |
623 | if (result) |
624 | { | |
1f29e30b | 625 | #if 0 /* These should be set correctly anyways. */ |
214f8f23 KR |
626 | abfd->sections = obj_textsec (abfd); |
627 | obj_textsec (abfd)->next = obj_datasec (abfd); | |
628 | obj_datasec (abfd)->next = obj_bsssec (abfd); | |
1f29e30b | 629 | #endif |
214f8f23 KR |
630 | } |
631 | else | |
632 | { | |
633 | free (rawptr); | |
634 | abfd->tdata.aout_data = oldrawptr; | |
635 | } | |
e6e265ce | 636 | return result; |
7ed4093a SC |
637 | } |
638 | ||
4e41b5aa SC |
639 | /* |
640 | FUNCTION | |
c188b0be | 641 | aout_@var{size}_mkobject |
6f715d66 | 642 | |
fa2b89f1 | 643 | SYNOPSIS |
c188b0be DM |
644 | boolean aout_@var{size}_mkobject, (bfd *abfd); |
645 | ||
646 | DESCRIPTION | |
647 | Initialize BFD @var{abfd} for use with a.out files. | |
6f715d66 | 648 | */ |
7ed4093a SC |
649 | |
650 | boolean | |
8eb5d4be JK |
651 | NAME(aout,mkobject) (abfd) |
652 | bfd *abfd; | |
7ed4093a | 653 | { |
6db82ea7 | 654 | struct aout_data_struct *rawptr; |
7ed4093a | 655 | |
68241b2b | 656 | bfd_set_error (bfd_error_system_call); |
7ed4093a SC |
657 | |
658 | /* Use an intermediate variable for clarity */ | |
2e235c93 | 659 | rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct )); |
c188b0be | 660 | |
a9713b91 | 661 | if (rawptr == NULL) |
7ed4093a | 662 | return false; |
c188b0be | 663 | |
6db82ea7 | 664 | abfd->tdata.aout_data = rawptr; |
7ed4093a | 665 | exec_hdr (abfd) = &(rawptr->e); |
c188b0be | 666 | |
7ed4093a SC |
667 | obj_textsec (abfd) = (asection *)NULL; |
668 | obj_datasec (abfd) = (asection *)NULL; | |
669 | obj_bsssec (abfd) = (asection *)NULL; | |
c188b0be | 670 | |
7ed4093a SC |
671 | return true; |
672 | } | |
673 | ||
6f715d66 | 674 | |
4e41b5aa SC |
675 | /* |
676 | FUNCTION | |
c188b0be DM |
677 | aout_@var{size}_machine_type |
678 | ||
679 | SYNOPSIS | |
680 | enum machine_type aout_@var{size}_machine_type | |
681 | (enum bfd_architecture arch, | |
682 | unsigned long machine)); | |
6f715d66 | 683 | |
4e41b5aa SC |
684 | DESCRIPTION |
685 | Keep track of machine architecture and machine type for | |
c188b0be DM |
686 | a.out's. Return the <<machine_type>> for a particular |
687 | architecture and machine, or <<M_UNKNOWN>> if that exact architecture | |
688 | and machine can't be represented in a.out format. | |
7ed4093a | 689 | |
4e41b5aa | 690 | If the architecture is understood, machine type 0 (default) |
c188b0be | 691 | is always understood. |
6f715d66 | 692 | */ |
7ed4093a SC |
693 | |
694 | enum machine_type | |
9ae74960 | 695 | NAME(aout,machine_type) (arch, machine, unknown) |
8eb5d4be JK |
696 | enum bfd_architecture arch; |
697 | unsigned long machine; | |
9ae74960 | 698 | boolean *unknown; |
7ed4093a SC |
699 | { |
700 | enum machine_type arch_flags; | |
c188b0be | 701 | |
7ed4093a | 702 | arch_flags = M_UNKNOWN; |
9ae74960 | 703 | *unknown = true; |
c188b0be | 704 | |
7ed4093a SC |
705 | switch (arch) { |
706 | case bfd_arch_sparc: | |
ae115e51 ILT |
707 | if (machine == 0 |
708 | || machine == bfd_mach_sparc | |
d1f74cd2 | 709 | || machine == bfd_mach_sparc_sparclite |
c189fdfb | 710 | || machine == bfd_mach_sparc_v9) |
ae115e51 | 711 | arch_flags = M_SPARC; |
d1f74cd2 DE |
712 | else if (machine == bfd_mach_sparc_sparclet) |
713 | arch_flags = M_SPARCLET; | |
7ed4093a | 714 | break; |
c188b0be | 715 | |
7ed4093a SC |
716 | case bfd_arch_m68k: |
717 | switch (machine) { | |
718 | case 0: arch_flags = M_68010; break; | |
9ae74960 | 719 | case 68000: arch_flags = M_UNKNOWN; *unknown = false; break; |
7ed4093a SC |
720 | case 68010: arch_flags = M_68010; break; |
721 | case 68020: arch_flags = M_68020; break; | |
722 | default: arch_flags = M_UNKNOWN; break; | |
723 | } | |
724 | break; | |
c188b0be | 725 | |
7ed4093a SC |
726 | case bfd_arch_i386: |
727 | if (machine == 0) arch_flags = M_386; | |
728 | break; | |
c188b0be | 729 | |
7ed4093a SC |
730 | case bfd_arch_a29k: |
731 | if (machine == 0) arch_flags = M_29K; | |
732 | break; | |
c188b0be | 733 | |
204ba9e3 ILT |
734 | case bfd_arch_arm: |
735 | if (machine == 0) arch_flags = M_ARM; | |
736 | break; | |
737 | ||
5cd3dcff KR |
738 | case bfd_arch_mips: |
739 | switch (machine) { | |
740 | case 0: | |
741 | case 2000: | |
742 | case 3000: arch_flags = M_MIPS1; break; | |
943fbd5b | 743 | case 4000: /* mips3 */ |
5cd3dcff | 744 | case 4400: |
943fbd5b KR |
745 | case 8000: /* mips4 */ |
746 | /* real mips2: */ | |
5cd3dcff KR |
747 | case 6000: arch_flags = M_MIPS2; break; |
748 | default: arch_flags = M_UNKNOWN; break; | |
749 | } | |
750 | break; | |
751 | ||
f42fe159 ILT |
752 | case bfd_arch_ns32k: |
753 | switch (machine) { | |
754 | case 0: arch_flags = M_NS32532; break; | |
755 | case 32032: arch_flags = M_NS32032; break; | |
756 | case 32532: arch_flags = M_NS32532; break; | |
757 | default: arch_flags = M_UNKNOWN; break; | |
758 | } | |
759 | break; | |
760 | ||
82b1edf7 KR |
761 | case bfd_arch_vax: |
762 | *unknown = false; | |
763 | break; | |
764 | ||
7ed4093a SC |
765 | default: |
766 | arch_flags = M_UNKNOWN; | |
7ed4093a | 767 | } |
9ae74960 ILT |
768 | |
769 | if (arch_flags != M_UNKNOWN) | |
770 | *unknown = false; | |
771 | ||
7ed4093a SC |
772 | return arch_flags; |
773 | } | |
774 | ||
9e2dad8e | 775 | |
4e41b5aa SC |
776 | /* |
777 | FUNCTION | |
c188b0be | 778 | aout_@var{size}_set_arch_mach |
6f715d66 | 779 | |
fa2b89f1 | 780 | SYNOPSIS |
c188b0be | 781 | boolean aout_@var{size}_set_arch_mach, |
6f715d66 | 782 | (bfd *, |
c188b0be | 783 | enum bfd_architecture arch, |
6f715d66 | 784 | unsigned long machine)); |
c188b0be DM |
785 | |
786 | DESCRIPTION | |
787 | Set the architecture and the machine of the BFD @var{abfd} to the | |
788 | values @var{arch} and @var{machine}. Verify that @var{abfd}'s format | |
789 | can support the architecture required. | |
6f715d66 SC |
790 | */ |
791 | ||
7ed4093a | 792 | boolean |
8eb5d4be JK |
793 | NAME(aout,set_arch_mach) (abfd, arch, machine) |
794 | bfd *abfd; | |
795 | enum bfd_architecture arch; | |
796 | unsigned long machine; | |
7ed4093a | 797 | { |
2e235c93 ILT |
798 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) |
799 | return false; | |
800 | ||
9ae74960 ILT |
801 | if (arch != bfd_arch_unknown) |
802 | { | |
803 | boolean unknown; | |
804 | ||
805 | NAME(aout,machine_type) (arch, machine, &unknown); | |
806 | if (unknown) | |
807 | return false; | |
808 | } | |
ce07dd7c | 809 | |
214f8f23 KR |
810 | /* Determine the size of a relocation entry */ |
811 | switch (arch) { | |
812 | case bfd_arch_sparc: | |
813 | case bfd_arch_a29k: | |
5cd3dcff | 814 | case bfd_arch_mips: |
214f8f23 KR |
815 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; |
816 | break; | |
817 | default: | |
818 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
819 | break; | |
820 | } | |
821 | ||
2768b3f7 | 822 | return (*aout_backend_info(abfd)->set_sizes) (abfd); |
7ed4093a | 823 | } |
7ed4093a | 824 | |
4c3721d5 ILT |
825 | static void |
826 | adjust_o_magic (abfd, execp) | |
827 | bfd *abfd; | |
828 | struct internal_exec *execp; | |
829 | { | |
830 | file_ptr pos = adata (abfd).exec_bytes_size; | |
831 | bfd_vma vma = 0; | |
832 | int pad = 0; | |
833 | ||
834 | /* Text. */ | |
835 | obj_textsec(abfd)->filepos = pos; | |
74942465 ILT |
836 | if (!obj_textsec(abfd)->user_set_vma) |
837 | obj_textsec(abfd)->vma = vma; | |
838 | else | |
839 | vma = obj_textsec(abfd)->vma; | |
840 | ||
4c3721d5 ILT |
841 | pos += obj_textsec(abfd)->_raw_size; |
842 | vma += obj_textsec(abfd)->_raw_size; | |
843 | ||
844 | /* Data. */ | |
845 | if (!obj_datasec(abfd)->user_set_vma) | |
846 | { | |
847 | #if 0 /* ?? Does alignment in the file image really matter? */ | |
848 | pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma; | |
849 | #endif | |
850 | obj_textsec(abfd)->_raw_size += pad; | |
851 | pos += pad; | |
852 | vma += pad; | |
853 | obj_datasec(abfd)->vma = vma; | |
854 | } | |
82b1edf7 KR |
855 | else |
856 | vma = obj_datasec(abfd)->vma; | |
4c3721d5 ILT |
857 | obj_datasec(abfd)->filepos = pos; |
858 | pos += obj_datasec(abfd)->_raw_size; | |
859 | vma += obj_datasec(abfd)->_raw_size; | |
860 | ||
861 | /* BSS. */ | |
862 | if (!obj_bsssec(abfd)->user_set_vma) | |
863 | { | |
864 | #if 0 | |
865 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; | |
866 | #endif | |
867 | obj_datasec(abfd)->_raw_size += pad; | |
868 | pos += pad; | |
869 | vma += pad; | |
870 | obj_bsssec(abfd)->vma = vma; | |
871 | } | |
f4945271 ILT |
872 | else |
873 | { | |
874 | /* The VMA of the .bss section is set by the the VMA of the | |
875 | .data section plus the size of the .data section. We may | |
876 | need to add padding bytes to make this true. */ | |
877 | pad = obj_bsssec (abfd)->vma - vma; | |
878 | if (pad > 0) | |
879 | { | |
880 | obj_datasec (abfd)->_raw_size += pad; | |
881 | pos += pad; | |
882 | } | |
883 | } | |
4c3721d5 ILT |
884 | obj_bsssec(abfd)->filepos = pos; |
885 | ||
886 | /* Fix up the exec header. */ | |
887 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
888 | execp->a_data = obj_datasec(abfd)->_raw_size; | |
889 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
890 | N_SET_MAGIC (*execp, OMAGIC); | |
891 | } | |
892 | ||
893 | static void | |
894 | adjust_z_magic (abfd, execp) | |
895 | bfd *abfd; | |
896 | struct internal_exec *execp; | |
897 | { | |
898 | bfd_size_type data_pad, text_pad; | |
899 | file_ptr text_end; | |
900 | CONST struct aout_backend_data *abdp; | |
901 | int ztih; /* Nonzero if text includes exec header. */ | |
4c3721d5 ILT |
902 | |
903 | abdp = aout_backend_info (abfd); | |
904 | ||
905 | /* Text. */ | |
0630aba5 ILT |
906 | ztih = (abdp != NULL |
907 | && (abdp->text_includes_header | |
908 | || obj_aout_subformat (abfd) == q_magic_format)); | |
4c3721d5 ILT |
909 | obj_textsec(abfd)->filepos = (ztih |
910 | ? adata(abfd).exec_bytes_size | |
0630aba5 | 911 | : adata(abfd).zmagic_disk_block_size); |
4c3721d5 | 912 | if (! obj_textsec(abfd)->user_set_vma) |
e1f99f60 ILT |
913 | { |
914 | /* ?? Do we really need to check for relocs here? */ | |
915 | obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC) | |
916 | ? 0 | |
917 | : (ztih | |
918 | ? (abdp->default_text_vma | |
919 | + adata(abfd).exec_bytes_size) | |
920 | : abdp->default_text_vma)); | |
921 | text_pad = 0; | |
922 | } | |
923 | else | |
924 | { | |
925 | /* The .text section is being loaded at an unusual address. We | |
926 | may need to pad it such that the .data section starts at a page | |
927 | boundary. */ | |
928 | if (ztih) | |
929 | text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma) | |
930 | & (adata (abfd).page_size - 1)); | |
931 | else | |
932 | text_pad = ((- obj_textsec (abfd)->vma) | |
933 | & (adata (abfd).page_size - 1)); | |
934 | } | |
935 | ||
4c3721d5 | 936 | /* Find start of data. */ |
0630aba5 ILT |
937 | if (ztih) |
938 | { | |
939 | text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size; | |
e1f99f60 | 940 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
0630aba5 ILT |
941 | } |
942 | else | |
943 | { | |
944 | /* Note that if page_size == zmagic_disk_block_size, then | |
945 | filepos == page_size, and this case is the same as the ztih | |
946 | case. */ | |
947 | text_end = obj_textsec (abfd)->_raw_size; | |
e1f99f60 | 948 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
0630aba5 ILT |
949 | text_end += obj_textsec (abfd)->filepos; |
950 | } | |
4c3721d5 ILT |
951 | obj_textsec(abfd)->_raw_size += text_pad; |
952 | text_end += text_pad; | |
953 | ||
954 | /* Data. */ | |
955 | if (!obj_datasec(abfd)->user_set_vma) | |
956 | { | |
957 | bfd_vma vma; | |
958 | vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size; | |
959 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
960 | } | |
4c3721d5 ILT |
961 | if (abdp && abdp->zmagic_mapped_contiguous) |
962 | { | |
963 | text_pad = (obj_datasec(abfd)->vma | |
964 | - obj_textsec(abfd)->vma | |
965 | - obj_textsec(abfd)->_raw_size); | |
966 | obj_textsec(abfd)->_raw_size += text_pad; | |
967 | } | |
968 | obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos | |
969 | + obj_textsec(abfd)->_raw_size); | |
970 | ||
971 | /* Fix up exec header while we're at it. */ | |
972 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
973 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) | |
974 | execp->a_text += adata(abfd).exec_bytes_size; | |
f5419a59 ILT |
975 | if (obj_aout_subformat (abfd) == q_magic_format) |
976 | N_SET_MAGIC (*execp, QMAGIC); | |
977 | else | |
978 | N_SET_MAGIC (*execp, ZMAGIC); | |
5330499f | 979 | |
4c3721d5 | 980 | /* Spec says data section should be rounded up to page boundary. */ |
4c3721d5 ILT |
981 | obj_datasec(abfd)->_raw_size |
982 | = align_power (obj_datasec(abfd)->_raw_size, | |
983 | obj_bsssec(abfd)->alignment_power); | |
984 | execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size, | |
985 | adata(abfd).page_size); | |
986 | data_pad = execp->a_data - obj_datasec(abfd)->_raw_size; | |
987 | ||
988 | /* BSS. */ | |
989 | if (!obj_bsssec(abfd)->user_set_vma) | |
990 | obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma | |
991 | + obj_datasec(abfd)->_raw_size); | |
5330499f DM |
992 | /* If the BSS immediately follows the data section and extra space |
993 | in the page is left after the data section, fudge data | |
994 | in the header so that the bss section looks smaller by that | |
995 | amount. We'll start the bss section there, and lie to the OS. | |
996 | (Note that a linker script, as well as the above assignment, | |
997 | could have explicitly set the BSS vma to immediately follow | |
998 | the data section.) */ | |
999 | if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power) | |
1000 | == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size) | |
1001 | execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 : | |
1002 | obj_bsssec(abfd)->_raw_size - data_pad; | |
1003 | else | |
1004 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
4c3721d5 ILT |
1005 | } |
1006 | ||
1007 | static void | |
1008 | adjust_n_magic (abfd, execp) | |
1009 | bfd *abfd; | |
1010 | struct internal_exec *execp; | |
1011 | { | |
1012 | file_ptr pos = adata(abfd).exec_bytes_size; | |
1013 | bfd_vma vma = 0; | |
1014 | int pad; | |
1015 | ||
1016 | /* Text. */ | |
1017 | obj_textsec(abfd)->filepos = pos; | |
1018 | if (!obj_textsec(abfd)->user_set_vma) | |
1019 | obj_textsec(abfd)->vma = vma; | |
1020 | else | |
1021 | vma = obj_textsec(abfd)->vma; | |
1022 | pos += obj_textsec(abfd)->_raw_size; | |
1023 | vma += obj_textsec(abfd)->_raw_size; | |
1024 | ||
1025 | /* Data. */ | |
1026 | obj_datasec(abfd)->filepos = pos; | |
1027 | if (!obj_datasec(abfd)->user_set_vma) | |
1028 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
1029 | vma = obj_datasec(abfd)->vma; | |
1030 | ||
1031 | /* Since BSS follows data immediately, see if it needs alignment. */ | |
1032 | vma += obj_datasec(abfd)->_raw_size; | |
1033 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; | |
1034 | obj_datasec(abfd)->_raw_size += pad; | |
1035 | pos += obj_datasec(abfd)->_raw_size; | |
1036 | ||
1037 | /* BSS. */ | |
1038 | if (!obj_bsssec(abfd)->user_set_vma) | |
1039 | obj_bsssec(abfd)->vma = vma; | |
1040 | else | |
1041 | vma = obj_bsssec(abfd)->vma; | |
1042 | ||
1043 | /* Fix up exec header. */ | |
1044 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
1045 | execp->a_data = obj_datasec(abfd)->_raw_size; | |
1046 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
1047 | N_SET_MAGIC (*execp, NMAGIC); | |
1048 | } | |
1049 | ||
ce07dd7c | 1050 | boolean |
8eb5d4be JK |
1051 | NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end) |
1052 | bfd *abfd; | |
1053 | bfd_size_type *text_size; | |
1054 | file_ptr *text_end; | |
ce07dd7c KR |
1055 | { |
1056 | struct internal_exec *execp = exec_hdr (abfd); | |
4c3721d5 | 1057 | |
ec6b18c4 ILT |
1058 | if (! NAME(aout,make_sections) (abfd)) |
1059 | return false; | |
1060 | ||
f5419a59 ILT |
1061 | if (adata(abfd).magic != undecided_magic) |
1062 | return true; | |
4c3721d5 | 1063 | |
c188b0be | 1064 | obj_textsec(abfd)->_raw_size = |
ce07dd7c KR |
1065 | align_power(obj_textsec(abfd)->_raw_size, |
1066 | obj_textsec(abfd)->alignment_power); | |
1067 | ||
1068 | *text_size = obj_textsec (abfd)->_raw_size; | |
1069 | /* Rule (heuristic) for when to pad to a new page. Note that there | |
4c3721d5 ILT |
1070 | are (at least) two ways demand-paged (ZMAGIC) files have been |
1071 | handled. Most Berkeley-based systems start the text segment at | |
34e9ffbc | 1072 | (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text |
4c3721d5 ILT |
1073 | segment right after the exec header; the latter is counted in the |
1074 | text segment size, and is paged in by the kernel with the rest of | |
1075 | the text. */ | |
ce07dd7c KR |
1076 | |
1077 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1078 | to understand enough to implement it. Better would probably be to go | |
1079 | right from BFD flags to alignment/positioning characteristics. But the | |
1080 | old code was sloppy enough about handling the flags, and had enough | |
1081 | other magic, that it was a little hard for me to understand. I think | |
1082 | I understand it better now, but I haven't time to do the cleanup this | |
1083 | minute. */ | |
4c3721d5 ILT |
1084 | |
1085 | if (abfd->flags & D_PAGED) | |
1086 | /* Whether or not WP_TEXT is set -- let D_PAGED override. */ | |
4c3721d5 ILT |
1087 | adata(abfd).magic = z_magic; |
1088 | else if (abfd->flags & WP_TEXT) | |
1089 | adata(abfd).magic = n_magic; | |
1090 | else | |
1091 | adata(abfd).magic = o_magic; | |
ce07dd7c KR |
1092 | |
1093 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1094 | #if __GNUC__ >= 2 | |
1095 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1096 | ({ char *str; | |
1097 | switch (adata(abfd).magic) { | |
1098 | case n_magic: str = "NMAGIC"; break; | |
1099 | case o_magic: str = "OMAGIC"; break; | |
1100 | case z_magic: str = "ZMAGIC"; break; | |
1101 | default: abort (); | |
1102 | } | |
1103 | str; | |
1104 | }), | |
4c3721d5 ILT |
1105 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, |
1106 | obj_textsec(abfd)->alignment_power, | |
1107 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, | |
1108 | obj_datasec(abfd)->alignment_power, | |
1109 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size, | |
1110 | obj_bsssec(abfd)->alignment_power); | |
ce07dd7c KR |
1111 | #endif |
1112 | #endif | |
1113 | ||
1114 | switch (adata(abfd).magic) | |
1115 | { | |
1116 | case o_magic: | |
4c3721d5 | 1117 | adjust_o_magic (abfd, execp); |
ce07dd7c KR |
1118 | break; |
1119 | case z_magic: | |
4c3721d5 | 1120 | adjust_z_magic (abfd, execp); |
ce07dd7c KR |
1121 | break; |
1122 | case n_magic: | |
4c3721d5 | 1123 | adjust_n_magic (abfd, execp); |
ce07dd7c KR |
1124 | break; |
1125 | default: | |
1126 | abort (); | |
1127 | } | |
4c3721d5 | 1128 | |
ce07dd7c KR |
1129 | #ifdef BFD_AOUT_DEBUG |
1130 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
4c3721d5 ILT |
1131 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, |
1132 | obj_textsec(abfd)->filepos, | |
1133 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, | |
1134 | obj_datasec(abfd)->filepos, | |
ce07dd7c KR |
1135 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size); |
1136 | #endif | |
4c3721d5 | 1137 | |
d047d16a | 1138 | return true; |
ce07dd7c KR |
1139 | } |
1140 | ||
4e41b5aa SC |
1141 | /* |
1142 | FUNCTION | |
c188b0be | 1143 | aout_@var{size}_new_section_hook |
4e41b5aa | 1144 | |
fa2b89f1 | 1145 | SYNOPSIS |
c188b0be | 1146 | boolean aout_@var{size}_new_section_hook, |
9e2dad8e JG |
1147 | (bfd *abfd, |
1148 | asection *newsect)); | |
c188b0be DM |
1149 | |
1150 | DESCRIPTION | |
1151 | Called by the BFD in response to a @code{bfd_make_section} | |
1152 | request. | |
6f715d66 | 1153 | */ |
7ed4093a | 1154 | boolean |
8eb5d4be JK |
1155 | NAME(aout,new_section_hook) (abfd, newsect) |
1156 | bfd *abfd; | |
1157 | asection *newsect; | |
7ed4093a | 1158 | { |
6db82ea7 SC |
1159 | /* align to double at least */ |
1160 | newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; | |
3f7607af | 1161 | |
c188b0be DM |
1162 | |
1163 | if (bfd_get_format (abfd) == bfd_object) | |
6db82ea7 SC |
1164 | { |
1165 | if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) { | |
1166 | obj_textsec(abfd)= newsect; | |
e48f985c | 1167 | newsect->target_index = N_TEXT; |
6db82ea7 SC |
1168 | return true; |
1169 | } | |
c188b0be | 1170 | |
6db82ea7 SC |
1171 | if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) { |
1172 | obj_datasec(abfd) = newsect; | |
e48f985c | 1173 | newsect->target_index = N_DATA; |
6db82ea7 SC |
1174 | return true; |
1175 | } | |
c188b0be | 1176 | |
6db82ea7 SC |
1177 | if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) { |
1178 | obj_bsssec(abfd) = newsect; | |
e48f985c | 1179 | newsect->target_index = N_BSS; |
6db82ea7 SC |
1180 | return true; |
1181 | } | |
1182 | ||
1183 | } | |
c188b0be | 1184 | |
6db82ea7 SC |
1185 | /* We allow more than three sections internally */ |
1186 | return true; | |
7ed4093a SC |
1187 | } |
1188 | ||
1189 | boolean | |
8eb5d4be JK |
1190 | NAME(aout,set_section_contents) (abfd, section, location, offset, count) |
1191 | bfd *abfd; | |
1192 | sec_ptr section; | |
1193 | PTR location; | |
1194 | file_ptr offset; | |
1195 | bfd_size_type count; | |
7ed4093a | 1196 | { |
7b02b4ed | 1197 | file_ptr text_end; |
7b02b4ed | 1198 | bfd_size_type text_size; |
ce07dd7c | 1199 | |
773033d2 ILT |
1200 | if (! abfd->output_has_begun) |
1201 | { | |
1202 | if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) | |
1203 | return false; | |
1204 | } | |
12e7087f | 1205 | |
773033d2 ILT |
1206 | if (section == obj_bsssec (abfd)) |
1207 | { | |
1208 | bfd_set_error (bfd_error_no_contents); | |
1209 | return false; | |
1210 | } | |
1211 | ||
1212 | if (section != obj_textsec (abfd) | |
1213 | && section != obj_datasec (abfd)) | |
1214 | { | |
a1774c51 ILT |
1215 | (*_bfd_error_handler) |
1216 | ("%s: can not represent section `%s' in a.out object file format", | |
1217 | bfd_get_filename (abfd), bfd_get_section_name (abfd, section)); | |
773033d2 ILT |
1218 | bfd_set_error (bfd_error_nonrepresentable_section); |
1219 | return false; | |
1220 | } | |
1221 | ||
1222 | if (count != 0) | |
1223 | { | |
1224 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 | |
1225 | || bfd_write (location, 1, count, abfd) != count) | |
1226 | return false; | |
1227 | } | |
c188b0be | 1228 | |
7ed4093a SC |
1229 | return true; |
1230 | } | |
1231 | \f | |
5c8444f8 ILT |
1232 | /* Read the external symbols from an a.out file. */ |
1233 | ||
1234 | static boolean | |
1235 | aout_get_external_symbols (abfd) | |
1236 | bfd *abfd; | |
1237 | { | |
1238 | if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL) | |
1239 | { | |
1240 | bfd_size_type count; | |
1241 | struct external_nlist *syms; | |
1242 | ||
1243 | count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE; | |
1244 | ||
7ac84736 | 1245 | #ifdef USE_MMAP |
4fe6d901 KR |
1246 | if (bfd_get_file_window (abfd, |
1247 | obj_sym_filepos (abfd), exec_hdr (abfd)->a_syms, | |
0bb8ff19 | 1248 | &obj_aout_sym_window (abfd), true) == false) |
4fe6d901 KR |
1249 | return false; |
1250 | syms = (struct external_nlist *) obj_aout_sym_window (abfd).data; | |
7ac84736 KR |
1251 | #else |
1252 | /* We allocate using malloc to make the values easy to free | |
508539ab | 1253 | later on. If we put them on the objalloc it might not be |
7ac84736 KR |
1254 | possible to free them. */ |
1255 | syms = ((struct external_nlist *) | |
58142f10 | 1256 | bfd_malloc ((size_t) count * EXTERNAL_NLIST_SIZE)); |
7ac84736 | 1257 | if (syms == (struct external_nlist *) NULL && count != 0) |
58142f10 | 1258 | return false; |
7ac84736 KR |
1259 | |
1260 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
1261 | || (bfd_read (syms, 1, exec_hdr (abfd)->a_syms, abfd) | |
1262 | != exec_hdr (abfd)->a_syms)) | |
1263 | { | |
1264 | free (syms); | |
1265 | return false; | |
1266 | } | |
1267 | #endif | |
5c8444f8 ILT |
1268 | |
1269 | obj_aout_external_syms (abfd) = syms; | |
1270 | obj_aout_external_sym_count (abfd) = count; | |
1271 | } | |
1272 | ||
4f019d04 ILT |
1273 | if (obj_aout_external_strings (abfd) == NULL |
1274 | && exec_hdr (abfd)->a_syms != 0) | |
5c8444f8 ILT |
1275 | { |
1276 | unsigned char string_chars[BYTES_IN_WORD]; | |
1277 | bfd_size_type stringsize; | |
1278 | char *strings; | |
1279 | ||
1280 | /* Get the size of the strings. */ | |
1281 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
1282 | || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd) | |
1283 | != BYTES_IN_WORD)) | |
1284 | return false; | |
1285 | stringsize = GET_WORD (abfd, string_chars); | |
1286 | ||
7ac84736 | 1287 | #ifdef USE_MMAP |
4fe6d901 | 1288 | if (bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize, |
0bb8ff19 | 1289 | &obj_aout_string_window (abfd), true) == false) |
4fe6d901 KR |
1290 | return false; |
1291 | strings = (char *) obj_aout_string_window (abfd).data; | |
7ac84736 | 1292 | #else |
58142f10 | 1293 | strings = (char *) bfd_malloc ((size_t) stringsize + 1); |
7ac84736 | 1294 | if (strings == NULL) |
58142f10 | 1295 | return false; |
7ac84736 KR |
1296 | |
1297 | /* Skip space for the string count in the buffer for convenience | |
1298 | when using indexes. */ | |
1299 | if (bfd_read (strings + BYTES_IN_WORD, 1, stringsize - BYTES_IN_WORD, | |
1300 | abfd) | |
1301 | != stringsize - BYTES_IN_WORD) | |
1302 | { | |
1303 | free (strings); | |
1304 | return false; | |
1305 | } | |
1306 | #endif | |
5c8444f8 | 1307 | |
1afd2380 ILT |
1308 | /* Ensure that a zero index yields an empty string. */ |
1309 | strings[0] = '\0'; | |
1310 | ||
7ac84736 | 1311 | strings[stringsize - 1] = 0; |
5c8444f8 ILT |
1312 | |
1313 | obj_aout_external_strings (abfd) = strings; | |
1314 | obj_aout_external_string_size (abfd) = stringsize; | |
1315 | } | |
1316 | ||
1317 | return true; | |
1318 | } | |
1319 | ||
4298e311 ILT |
1320 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type |
1321 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1322 | nlist structure. This function is responsible for setting | |
1323 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
c188b0be | 1324 | |
9783e04a | 1325 | static boolean |
4298e311 ILT |
1326 | translate_from_native_sym_flags (abfd, cache_ptr) |
1327 | bfd *abfd; | |
1328 | aout_symbol_type *cache_ptr; | |
9e2dad8e | 1329 | { |
4298e311 ILT |
1330 | flagword visible; |
1331 | ||
1332 | if ((cache_ptr->type & N_STAB) != 0 | |
1333 | || cache_ptr->type == N_FN) | |
1334 | { | |
1335 | asection *sec; | |
1336 | ||
1337 | /* This is a debugging symbol. */ | |
1338 | ||
1339 | cache_ptr->symbol.flags = BSF_DEBUGGING; | |
1340 | ||
1341 | /* Work out the symbol section. */ | |
1342 | switch (cache_ptr->type & N_TYPE) | |
1343 | { | |
1344 | case N_TEXT: | |
1345 | case N_FN: | |
1346 | sec = obj_textsec (abfd); | |
1347 | break; | |
1348 | case N_DATA: | |
1349 | sec = obj_datasec (abfd); | |
1350 | break; | |
1351 | case N_BSS: | |
1352 | sec = obj_bsssec (abfd); | |
1353 | break; | |
1354 | default: | |
1355 | case N_ABS: | |
4587b578 | 1356 | sec = bfd_abs_section_ptr; |
4298e311 ILT |
1357 | break; |
1358 | } | |
1359 | ||
1360 | cache_ptr->symbol.section = sec; | |
1361 | cache_ptr->symbol.value -= sec->vma; | |
1362 | ||
1363 | return true; | |
1364 | } | |
1365 | ||
1366 | /* Get the default visibility. This does not apply to all types, so | |
1367 | we just hold it in a local variable to use if wanted. */ | |
1368 | if ((cache_ptr->type & N_EXT) == 0) | |
1369 | visible = BSF_LOCAL; | |
1370 | else | |
1371 | visible = BSF_GLOBAL; | |
1372 | ||
1373 | switch (cache_ptr->type) | |
6db82ea7 | 1374 | { |
4298e311 ILT |
1375 | default: |
1376 | case N_ABS: case N_ABS | N_EXT: | |
4587b578 | 1377 | cache_ptr->symbol.section = bfd_abs_section_ptr; |
4298e311 ILT |
1378 | cache_ptr->symbol.flags = visible; |
1379 | break; | |
1380 | ||
1381 | case N_UNDF | N_EXT: | |
1382 | if (cache_ptr->symbol.value != 0) | |
1383 | { | |
1384 | /* This is a common symbol. */ | |
1385 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
4587b578 | 1386 | cache_ptr->symbol.section = bfd_com_section_ptr; |
4298e311 ILT |
1387 | } |
1388 | else | |
1389 | { | |
1390 | cache_ptr->symbol.flags = 0; | |
4587b578 | 1391 | cache_ptr->symbol.section = bfd_und_section_ptr; |
4298e311 ILT |
1392 | } |
1393 | break; | |
1394 | ||
1395 | case N_TEXT: case N_TEXT | N_EXT: | |
1396 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1397 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1398 | cache_ptr->symbol.flags = visible; | |
1399 | break; | |
1400 | ||
2cd086e3 ILT |
1401 | /* N_SETV symbols used to represent set vectors placed in the |
1402 | data section. They are no longer generated. Theoretically, | |
1403 | it was possible to extract the entries and combine them with | |
1404 | new ones, although I don't know if that was ever actually | |
1405 | done. Unless that feature is restored, treat them as data | |
1406 | symbols. */ | |
1407 | case N_SETV: case N_SETV | N_EXT: | |
4298e311 ILT |
1408 | case N_DATA: case N_DATA | N_EXT: |
1409 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1410 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1411 | cache_ptr->symbol.flags = visible; | |
1412 | break; | |
1413 | ||
1414 | case N_BSS: case N_BSS | N_EXT: | |
1415 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1416 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1417 | cache_ptr->symbol.flags = visible; | |
1418 | break; | |
1419 | ||
964affdc DM |
1420 | case N_SETA: case N_SETA | N_EXT: |
1421 | case N_SETT: case N_SETT | N_EXT: | |
1422 | case N_SETD: case N_SETD | N_EXT: | |
1423 | case N_SETB: case N_SETB | N_EXT: | |
ebd24135 | 1424 | { |
b7d1158a ILT |
1425 | /* This code is no longer needed. It used to be used to make |
1426 | the linker handle set symbols, but they are now handled in | |
1427 | the add_symbols routine instead. */ | |
1428 | #if 0 | |
ebd24135 | 1429 | asection *section; |
4298e311 | 1430 | arelent_chain *reloc; |
ebd24135 | 1431 | asection *into_section; |
9783e04a | 1432 | |
4298e311 ILT |
1433 | /* This is a set symbol. The name of the symbol is the name |
1434 | of the set (e.g., __CTOR_LIST__). The value of the symbol | |
1435 | is the value to add to the set. We create a section with | |
1436 | the same name as the symbol, and add a reloc to insert the | |
1437 | appropriate value into the section. | |
1438 | ||
1439 | This action is actually obsolete; it used to make the | |
1440 | linker do the right thing, but the linker no longer uses | |
1441 | this function. */ | |
1442 | ||
1443 | section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name); | |
1444 | if (section == NULL) | |
1445 | { | |
1446 | char *copy; | |
1447 | ||
1448 | copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1); | |
1449 | if (copy == NULL) | |
a9713b91 | 1450 | return false; |
4298e311 ILT |
1451 | |
1452 | strcpy (copy, cache_ptr->symbol.name); | |
1453 | section = bfd_make_section (abfd, copy); | |
1454 | if (section == NULL) | |
1455 | return false; | |
1456 | } | |
1457 | ||
1458 | reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain)); | |
1459 | if (reloc == NULL) | |
a9713b91 | 1460 | return false; |
9783e04a | 1461 | |
4298e311 ILT |
1462 | /* Build a relocation entry for the constructor. */ |
1463 | switch (cache_ptr->type & N_TYPE) | |
a99c3d70 | 1464 | { |
4298e311 | 1465 | case N_SETA: |
4587b578 | 1466 | into_section = bfd_abs_section_ptr; |
ebd24135 ILT |
1467 | cache_ptr->type = N_ABS; |
1468 | break; | |
4298e311 ILT |
1469 | case N_SETT: |
1470 | into_section = obj_textsec (abfd); | |
ebd24135 ILT |
1471 | cache_ptr->type = N_TEXT; |
1472 | break; | |
4298e311 ILT |
1473 | case N_SETD: |
1474 | into_section = obj_datasec (abfd); | |
ebd24135 ILT |
1475 | cache_ptr->type = N_DATA; |
1476 | break; | |
4298e311 ILT |
1477 | case N_SETB: |
1478 | into_section = obj_bsssec (abfd); | |
ebd24135 ILT |
1479 | cache_ptr->type = N_BSS; |
1480 | break; | |
ebd24135 | 1481 | } |
88dfcd68 | 1482 | |
4298e311 ILT |
1483 | /* Build a relocation pointing into the constructor section |
1484 | pointing at the symbol in the set vector specified. */ | |
ebd24135 | 1485 | reloc->relent.addend = cache_ptr->symbol.value; |
4298e311 | 1486 | cache_ptr->symbol.section = into_section; |
ebd24135 | 1487 | reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr; |
6db82ea7 | 1488 | |
4298e311 ILT |
1489 | /* We modify the symbol to belong to a section depending upon |
1490 | the name of the symbol, and add to the size of the section | |
1491 | to contain a pointer to the symbol. Build a reloc entry to | |
1492 | relocate to this symbol attached to this section. */ | |
a8a916c8 | 1493 | section->flags = SEC_CONSTRUCTOR | SEC_RELOC; |
a99c3d70 | 1494 | |
ebd24135 ILT |
1495 | section->reloc_count++; |
1496 | section->alignment_power = 2; | |
a99c3d70 | 1497 | |
ebd24135 ILT |
1498 | reloc->next = section->constructor_chain; |
1499 | section->constructor_chain = reloc; | |
1500 | reloc->relent.address = section->_raw_size; | |
4298e311 ILT |
1501 | section->_raw_size += BYTES_IN_WORD; |
1502 | ||
f42fe159 | 1503 | reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd); |
a99c3d70 | 1504 | |
b7d1158a ILT |
1505 | #endif /* 0 */ |
1506 | ||
7dd3d45a ILT |
1507 | switch (cache_ptr->type & N_TYPE) |
1508 | { | |
1509 | case N_SETA: | |
1510 | cache_ptr->symbol.section = bfd_abs_section_ptr; | |
1511 | break; | |
1512 | case N_SETT: | |
1513 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1514 | break; | |
1515 | case N_SETD: | |
1516 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1517 | break; | |
1518 | case N_SETB: | |
1519 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1520 | break; | |
1521 | } | |
1522 | ||
ebd24135 ILT |
1523 | cache_ptr->symbol.flags |= BSF_CONSTRUCTOR; |
1524 | } | |
1525 | break; | |
0c205af2 | 1526 | |
4298e311 ILT |
1527 | case N_WARNING: |
1528 | /* This symbol is the text of a warning message. The next | |
1529 | symbol is the symbol to associate the warning with. If a | |
1530 | reference is made to that symbol, a warning is issued. */ | |
1531 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
4587b578 | 1532 | cache_ptr->symbol.section = bfd_abs_section_ptr; |
4298e311 | 1533 | break; |
ebd24135 | 1534 | |
4298e311 ILT |
1535 | case N_INDR: case N_INDR | N_EXT: |
1536 | /* An indirect symbol. This consists of two symbols in a row. | |
1537 | The first symbol is the name of the indirection. The second | |
1538 | symbol is the name of the target. A reference to the first | |
1539 | symbol becomes a reference to the second. */ | |
1540 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible; | |
4587b578 | 1541 | cache_ptr->symbol.section = bfd_ind_section_ptr; |
4298e311 ILT |
1542 | break; |
1543 | ||
1544 | case N_WEAKU: | |
4587b578 | 1545 | cache_ptr->symbol.section = bfd_und_section_ptr; |
4298e311 ILT |
1546 | cache_ptr->symbol.flags = BSF_WEAK; |
1547 | break; | |
1548 | ||
1549 | case N_WEAKA: | |
4587b578 | 1550 | cache_ptr->symbol.section = bfd_abs_section_ptr; |
4298e311 ILT |
1551 | cache_ptr->symbol.flags = BSF_WEAK; |
1552 | break; | |
1553 | ||
1554 | case N_WEAKT: | |
1555 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1556 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1557 | cache_ptr->symbol.flags = BSF_WEAK; | |
1558 | break; | |
1559 | ||
1560 | case N_WEAKD: | |
1561 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1562 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1563 | cache_ptr->symbol.flags = BSF_WEAK; | |
1564 | break; | |
1565 | ||
1566 | case N_WEAKB: | |
1567 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1568 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1569 | cache_ptr->symbol.flags = BSF_WEAK; | |
1570 | break; | |
a99c3d70 | 1571 | } |
4298e311 | 1572 | |
9783e04a | 1573 | return true; |
7ed4093a SC |
1574 | } |
1575 | ||
4298e311 | 1576 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ |
6db82ea7 | 1577 | |
4c3721d5 | 1578 | static boolean |
4298e311 | 1579 | translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer) |
8eb5d4be | 1580 | bfd *abfd; |
4298e311 ILT |
1581 | asymbol *cache_ptr; |
1582 | struct external_nlist *sym_pointer; | |
7ed4093a SC |
1583 | { |
1584 | bfd_vma value = cache_ptr->value; | |
943fbd5b KR |
1585 | asection *sec; |
1586 | bfd_vma off; | |
7ed4093a | 1587 | |
4298e311 ILT |
1588 | /* Mask out any existing type bits in case copying from one section |
1589 | to another. */ | |
10dea9ed | 1590 | sym_pointer->e_type[0] &= ~N_TYPE; |
a99c3d70 | 1591 | |
943fbd5b KR |
1592 | sec = bfd_get_section (cache_ptr); |
1593 | off = 0; | |
1594 | ||
1595 | if (sec == NULL) | |
4298e311 | 1596 | { |
943fbd5b KR |
1597 | /* This case occurs, e.g., for the *DEBUG* section of a COFF |
1598 | file. */ | |
a1774c51 | 1599 | (*_bfd_error_handler) |
167dc907 ILT |
1600 | ("%s: can not represent section for symbol `%s' in a.out object file format", |
1601 | bfd_get_filename (abfd), | |
1602 | cache_ptr->name != NULL ? cache_ptr->name : "*unknown*"); | |
4298e311 ILT |
1603 | bfd_set_error (bfd_error_nonrepresentable_section); |
1604 | return false; | |
1605 | } | |
943fbd5b KR |
1606 | |
1607 | if (sec->output_section != NULL) | |
1608 | { | |
1609 | off = sec->output_offset; | |
1610 | sec = sec->output_section; | |
1611 | } | |
1612 | ||
1613 | if (bfd_is_abs_section (sec)) | |
1614 | sym_pointer->e_type[0] |= N_ABS; | |
1615 | else if (sec == obj_textsec (abfd)) | |
1616 | sym_pointer->e_type[0] |= N_TEXT; | |
1617 | else if (sec == obj_datasec (abfd)) | |
1618 | sym_pointer->e_type[0] |= N_DATA; | |
1619 | else if (sec == obj_bsssec (abfd)) | |
1620 | sym_pointer->e_type[0] |= N_BSS; | |
1621 | else if (bfd_is_und_section (sec)) | |
4587b578 | 1622 | sym_pointer->e_type[0] = N_UNDF | N_EXT; |
943fbd5b | 1623 | else if (bfd_is_ind_section (sec)) |
4587b578 | 1624 | sym_pointer->e_type[0] = N_INDR; |
943fbd5b | 1625 | else if (bfd_is_com_section (sec)) |
4298e311 ILT |
1626 | sym_pointer->e_type[0] = N_UNDF | N_EXT; |
1627 | else | |
1628 | { | |
a1774c51 ILT |
1629 | (*_bfd_error_handler) |
1630 | ("%s: can not represent section `%s' in a.out object file format", | |
1631 | bfd_get_filename (abfd), bfd_get_section_name (abfd, sec)); | |
4298e311 ILT |
1632 | bfd_set_error (bfd_error_nonrepresentable_section); |
1633 | return false; | |
1634 | } | |
6f56c941 | 1635 | |
6db82ea7 | 1636 | /* Turn the symbol from section relative to absolute again */ |
943fbd5b | 1637 | value += sec->vma + off; |
c188b0be | 1638 | |
4298e311 | 1639 | if ((cache_ptr->flags & BSF_WARNING) != 0) |
d7e34f67 | 1640 | sym_pointer->e_type[0] = N_WARNING; |
c188b0be | 1641 | |
4298e311 ILT |
1642 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) |
1643 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1644 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
3caa6924 | 1645 | sym_pointer->e_type[0] |= N_EXT; |
4298e311 ILT |
1646 | |
1647 | if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0) | |
1648 | { | |
1649 | int type = ((aout_symbol_type *) cache_ptr)->type; | |
1650 | switch (type) | |
1651 | { | |
1652 | case N_ABS: type = N_SETA; break; | |
1653 | case N_TEXT: type = N_SETT; break; | |
1654 | case N_DATA: type = N_SETD; break; | |
1655 | case N_BSS: type = N_SETB; break; | |
1656 | } | |
1657 | sym_pointer->e_type[0] = type; | |
1658 | } | |
1659 | ||
1660 | if ((cache_ptr->flags & BSF_WEAK) != 0) | |
1661 | { | |
1662 | int type; | |
1663 | ||
1664 | switch (sym_pointer->e_type[0] & N_TYPE) | |
1665 | { | |
1666 | default: | |
1667 | case N_ABS: type = N_WEAKA; break; | |
1668 | case N_TEXT: type = N_WEAKT; break; | |
1669 | case N_DATA: type = N_WEAKD; break; | |
1670 | case N_BSS: type = N_WEAKB; break; | |
1671 | case N_UNDF: type = N_WEAKU; break; | |
1672 | } | |
1673 | sym_pointer->e_type[0] = type; | |
1674 | } | |
6db82ea7 | 1675 | |
7ed4093a | 1676 | PUT_WORD(abfd, value, sym_pointer->e_value); |
4c3721d5 ILT |
1677 | |
1678 | return true; | |
7ed4093a SC |
1679 | } |
1680 | \f | |
1681 | /* Native-level interface to symbols. */ | |
1682 | ||
7ed4093a | 1683 | asymbol * |
8eb5d4be JK |
1684 | NAME(aout,make_empty_symbol) (abfd) |
1685 | bfd *abfd; | |
9e2dad8e JG |
1686 | { |
1687 | aout_symbol_type *new = | |
1688 | (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type)); | |
9783e04a | 1689 | if (!new) |
a9713b91 | 1690 | return NULL; |
9e2dad8e | 1691 | new->symbol.the_bfd = abfd; |
fa2b89f1 | 1692 | |
9e2dad8e JG |
1693 | return &new->symbol; |
1694 | } | |
7ed4093a | 1695 | |
0ee75d02 ILT |
1696 | /* Translate a set of internal symbols into external symbols. */ |
1697 | ||
fa77c704 ILT |
1698 | boolean |
1699 | NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic) | |
0ee75d02 ILT |
1700 | bfd *abfd; |
1701 | aout_symbol_type *in; | |
1702 | struct external_nlist *ext; | |
1703 | bfd_size_type count; | |
1704 | char *str; | |
1705 | bfd_size_type strsize; | |
1706 | boolean dynamic; | |
1707 | { | |
1708 | struct external_nlist *ext_end; | |
1709 | ||
1710 | ext_end = ext + count; | |
1711 | for (; ext < ext_end; ext++, in++) | |
1712 | { | |
1713 | bfd_vma x; | |
1714 | ||
1715 | x = GET_WORD (abfd, ext->e_strx); | |
1716 | in->symbol.the_bfd = abfd; | |
ca1c6bec ILT |
1717 | |
1718 | /* For the normal symbols, the zero index points at the number | |
1719 | of bytes in the string table but is to be interpreted as the | |
1720 | null string. For the dynamic symbols, the number of bytes in | |
1721 | the string table is stored in the __DYNAMIC structure and the | |
1722 | zero index points at an actual string. */ | |
1723 | if (x == 0 && ! dynamic) | |
1724 | in->symbol.name = ""; | |
1725 | else if (x < strsize) | |
0ee75d02 ILT |
1726 | in->symbol.name = str + x; |
1727 | else | |
1728 | return false; | |
1729 | ||
1730 | in->symbol.value = GET_SWORD (abfd, ext->e_value); | |
1731 | in->desc = bfd_h_get_16 (abfd, ext->e_desc); | |
1732 | in->other = bfd_h_get_8 (abfd, ext->e_other); | |
1733 | in->type = bfd_h_get_8 (abfd, ext->e_type); | |
74942465 | 1734 | in->symbol.udata.p = NULL; |
0ee75d02 | 1735 | |
4298e311 | 1736 | if (! translate_from_native_sym_flags (abfd, in)) |
9783e04a | 1737 | return false; |
0ee75d02 ILT |
1738 | |
1739 | if (dynamic) | |
1740 | in->symbol.flags |= BSF_DYNAMIC; | |
1741 | } | |
1742 | ||
1743 | return true; | |
1744 | } | |
1745 | ||
1746 | /* We read the symbols into a buffer, which is discarded when this | |
1747 | function exits. We read the strings into a buffer large enough to | |
1748 | hold them all plus all the cached symbol entries. */ | |
1749 | ||
7ed4093a | 1750 | boolean |
8eb5d4be JK |
1751 | NAME(aout,slurp_symbol_table) (abfd) |
1752 | bfd *abfd; | |
9e2dad8e | 1753 | { |
5c8444f8 | 1754 | struct external_nlist *old_external_syms; |
9e2dad8e | 1755 | aout_symbol_type *cached; |
5c8444f8 | 1756 | size_t cached_size; |
0f213cc2 | 1757 | |
9e2dad8e | 1758 | /* If there's no work to be done, don't do any */ |
5c8444f8 ILT |
1759 | if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL) |
1760 | return true; | |
1761 | ||
1762 | old_external_syms = obj_aout_external_syms (abfd); | |
1763 | ||
1764 | if (! aout_get_external_symbols (abfd)) | |
1765 | return false; | |
1766 | ||
fa77c704 | 1767 | cached_size = (obj_aout_external_sym_count (abfd) |
5c8444f8 | 1768 | * sizeof (aout_symbol_type)); |
58142f10 | 1769 | cached = (aout_symbol_type *) bfd_malloc (cached_size); |
74942465 | 1770 | if (cached == NULL && cached_size != 0) |
58142f10 | 1771 | return false; |
74942465 ILT |
1772 | if (cached_size != 0) |
1773 | memset (cached, 0, cached_size); | |
5c8444f8 ILT |
1774 | |
1775 | /* Convert from external symbol information to internal. */ | |
fa77c704 ILT |
1776 | if (! (NAME(aout,translate_symbol_table) |
1777 | (abfd, cached, | |
1778 | obj_aout_external_syms (abfd), | |
1779 | obj_aout_external_sym_count (abfd), | |
1780 | obj_aout_external_strings (abfd), | |
1781 | obj_aout_external_string_size (abfd), | |
1782 | false))) | |
0f213cc2 | 1783 | { |
5c8444f8 | 1784 | free (cached); |
0f213cc2 KR |
1785 | return false; |
1786 | } | |
1787 | ||
fa77c704 | 1788 | bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd); |
0f213cc2 | 1789 | |
5c8444f8 | 1790 | obj_aout_symbols (abfd) = cached; |
0f213cc2 | 1791 | |
5c8444f8 ILT |
1792 | /* It is very likely that anybody who calls this function will not |
1793 | want the external symbol information, so if it was allocated | |
1794 | because of our call to aout_get_external_symbols, we free it up | |
1795 | right away to save space. */ | |
1796 | if (old_external_syms == (struct external_nlist *) NULL | |
1797 | && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) | |
1798 | { | |
7ac84736 | 1799 | #ifdef USE_MMAP |
4fe6d901 | 1800 | bfd_free_window (&obj_aout_sym_window (abfd)); |
7ac84736 KR |
1801 | #else |
1802 | free (obj_aout_external_syms (abfd)); | |
1803 | #endif | |
5c8444f8 | 1804 | obj_aout_external_syms (abfd) = NULL; |
0ee75d02 | 1805 | } |
0f213cc2 | 1806 | |
9e2dad8e JG |
1807 | return true; |
1808 | } | |
0f213cc2 | 1809 | \f |
d17fc4c9 ILT |
1810 | /* We use a hash table when writing out symbols so that we only write |
1811 | out a particular string once. This helps particularly when the | |
1812 | linker writes out stabs debugging entries, because each different | |
1813 | contributing object file tends to have many duplicate stabs | |
1814 | strings. | |
1815 | ||
d63d0479 ILT |
1816 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it |
1817 | if BFD_TRADITIONAL_FORMAT is set. */ | |
0f213cc2 | 1818 | |
d17fc4c9 | 1819 | static bfd_size_type add_to_stringtab |
1afd2380 ILT |
1820 | PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean)); |
1821 | static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *)); | |
d17fc4c9 ILT |
1822 | |
1823 | /* Get the index of a string in a strtab, adding it if it is not | |
1afd2380 | 1824 | already present. */ |
d17fc4c9 ILT |
1825 | |
1826 | static INLINE bfd_size_type | |
1827 | add_to_stringtab (abfd, tab, str, copy) | |
0f213cc2 | 1828 | bfd *abfd; |
1afd2380 | 1829 | struct bfd_strtab_hash *tab; |
d17fc4c9 ILT |
1830 | const char *str; |
1831 | boolean copy; | |
0f213cc2 | 1832 | { |
1afd2380 | 1833 | boolean hash; |
435b470e | 1834 | bfd_size_type index; |
0f213cc2 | 1835 | |
d17fc4c9 | 1836 | /* An index of 0 always means the empty string. */ |
204ba9e3 | 1837 | if (str == 0 || *str == '\0') |
d17fc4c9 | 1838 | return 0; |
0f213cc2 | 1839 | |
1afd2380 ILT |
1840 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx |
1841 | doesn't understand a hashed string table. */ | |
1842 | hash = true; | |
1843 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
1844 | hash = false; | |
0f213cc2 | 1845 | |
435b470e ILT |
1846 | index = _bfd_stringtab_add (tab, str, hash, copy); |
1847 | ||
1848 | if (index != (bfd_size_type) -1) | |
1849 | { | |
1850 | /* Add BYTES_IN_WORD to the return value to account for the | |
1851 | space taken up by the string table size. */ | |
1852 | index += BYTES_IN_WORD; | |
1853 | } | |
1854 | ||
1855 | return index; | |
0f213cc2 KR |
1856 | } |
1857 | ||
d17fc4c9 ILT |
1858 | /* Write out a strtab. ABFD is already at the right location in the |
1859 | file. */ | |
1860 | ||
29e626eb | 1861 | static boolean |
d17fc4c9 ILT |
1862 | emit_stringtab (abfd, tab) |
1863 | register bfd *abfd; | |
1afd2380 | 1864 | struct bfd_strtab_hash *tab; |
0f213cc2 | 1865 | { |
d17fc4c9 | 1866 | bfd_byte buffer[BYTES_IN_WORD]; |
0f213cc2 | 1867 | |
1afd2380 ILT |
1868 | /* The string table starts with the size. */ |
1869 | PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer); | |
29e626eb ILT |
1870 | if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD) |
1871 | return false; | |
0f213cc2 | 1872 | |
1afd2380 | 1873 | return _bfd_stringtab_emit (abfd, tab); |
0f213cc2 | 1874 | } |
d17fc4c9 | 1875 | \f |
4c3721d5 | 1876 | boolean |
8eb5d4be JK |
1877 | NAME(aout,write_syms) (abfd) |
1878 | bfd *abfd; | |
0f213cc2 KR |
1879 | { |
1880 | unsigned int count ; | |
1881 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1afd2380 | 1882 | struct bfd_strtab_hash *strtab; |
0f213cc2 | 1883 | |
1afd2380 ILT |
1884 | strtab = _bfd_stringtab_init (); |
1885 | if (strtab == NULL) | |
d17fc4c9 | 1886 | return false; |
0f213cc2 KR |
1887 | |
1888 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1889 | { | |
7ed4093a | 1890 | asymbol *g = generic[count]; |
d17fc4c9 | 1891 | bfd_size_type indx; |
7ed4093a | 1892 | struct external_nlist nsp; |
6db82ea7 | 1893 | |
1afd2380 | 1894 | indx = add_to_stringtab (abfd, strtab, g->name, false); |
d17fc4c9 ILT |
1895 | if (indx == (bfd_size_type) -1) |
1896 | goto error_return; | |
1897 | PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx); | |
6db82ea7 | 1898 | |
0f213cc2 KR |
1899 | if (bfd_asymbol_flavour(g) == abfd->xvec->flavour) |
1900 | { | |
1901 | bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc); | |
1902 | bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other); | |
1903 | bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type); | |
1904 | } | |
7ed4093a | 1905 | else |
0f213cc2 KR |
1906 | { |
1907 | bfd_h_put_16(abfd,0, nsp.e_desc); | |
1908 | bfd_h_put_8(abfd, 0, nsp.e_other); | |
1909 | bfd_h_put_8(abfd, 0, nsp.e_type); | |
1910 | } | |
7b02b4ed | 1911 | |
4298e311 | 1912 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) |
d17fc4c9 | 1913 | goto error_return; |
7b02b4ed | 1914 | |
4c3721d5 ILT |
1915 | if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd) |
1916 | != EXTERNAL_NLIST_SIZE) | |
d17fc4c9 | 1917 | goto error_return; |
7ed4093a | 1918 | |
ae115e51 | 1919 | /* NB: `KEEPIT' currently overlays `udata.p', so set this only |
0f213cc2 KR |
1920 | here, at the end. */ |
1921 | g->KEEPIT = count; | |
1922 | } | |
7ed4093a | 1923 | |
1afd2380 | 1924 | if (! emit_stringtab (abfd, strtab)) |
d17fc4c9 ILT |
1925 | goto error_return; |
1926 | ||
1afd2380 | 1927 | _bfd_stringtab_free (strtab); |
d17fc4c9 ILT |
1928 | |
1929 | return true; | |
1930 | ||
1931 | error_return: | |
1afd2380 | 1932 | _bfd_stringtab_free (strtab); |
d17fc4c9 | 1933 | return false; |
0f213cc2 | 1934 | } |
7ed4093a | 1935 | |
0f213cc2 | 1936 | \f |
326e32d7 | 1937 | long |
8eb5d4be JK |
1938 | NAME(aout,get_symtab) (abfd, location) |
1939 | bfd *abfd; | |
1940 | asymbol **location; | |
3f7607af | 1941 | { |
7ed4093a SC |
1942 | unsigned int counter = 0; |
1943 | aout_symbol_type *symbase; | |
ce07dd7c | 1944 | |
326e32d7 ILT |
1945 | if (!NAME(aout,slurp_symbol_table)(abfd)) |
1946 | return -1; | |
ce07dd7c | 1947 | |
7ed4093a SC |
1948 | for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);) |
1949 | *(location++) = (asymbol *)( symbase++); | |
1950 | *location++ =0; | |
ce07dd7c | 1951 | return bfd_get_symcount (abfd); |
3f7607af | 1952 | } |
7ed4093a SC |
1953 | |
1954 | \f | |
1955 | /* Standard reloc stuff */ | |
1956 | /* Output standard relocation information to a file in target byte order. */ | |
1957 | ||
6ccdc203 ILT |
1958 | extern void NAME(aout,swap_std_reloc_out) |
1959 | PARAMS ((bfd *, arelent *, struct reloc_std_external *)); | |
1960 | ||
7ed4093a | 1961 | void |
8eb5d4be JK |
1962 | NAME(aout,swap_std_reloc_out) (abfd, g, natptr) |
1963 | bfd *abfd; | |
1964 | arelent *g; | |
1965 | struct reloc_std_external *natptr; | |
3f7607af | 1966 | { |
6db82ea7 SC |
1967 | int r_index; |
1968 | asymbol *sym = *(g->sym_ptr_ptr); | |
1969 | int r_extern; | |
1970 | unsigned int r_length; | |
1971 | int r_pcrel; | |
1972 | int r_baserel, r_jmptable, r_relative; | |
6db82ea7 | 1973 | asection *output_section = sym->section->output_section; |
ce07dd7c | 1974 | |
6db82ea7 | 1975 | PUT_WORD(abfd, g->address, natptr->r_address); |
ce07dd7c | 1976 | |
6db82ea7 SC |
1977 | r_length = g->howto->size ; /* Size as a power of two */ |
1978 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
c188b0be DM |
1979 | /* XXX This relies on relocs coming from a.out files. */ |
1980 | r_baserel = (g->howto->type & 8) != 0; | |
cb9461ff JK |
1981 | r_jmptable = (g->howto->type & 16) != 0; |
1982 | r_relative = (g->howto->type & 32) != 0; | |
c188b0be | 1983 | |
728472f1 ILT |
1984 | #if 0 |
1985 | /* For a standard reloc, the addend is in the object file. */ | |
6db82ea7 | 1986 | r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; |
728472f1 | 1987 | #endif |
c188b0be | 1988 | |
6db82ea7 SC |
1989 | /* name was clobbered by aout_write_syms to be symbol index */ |
1990 | ||
c188b0be | 1991 | /* If this relocation is relative to a symbol then set the |
2768b3f7 SC |
1992 | r_index to the symbols index, and the r_extern bit. |
1993 | ||
1994 | Absolute symbols can come in in two ways, either as an offset | |
1995 | from the abs section, or as a symbol which has an abs value. | |
1996 | check for that here | |
1997 | */ | |
c188b0be | 1998 | |
2768b3f7 | 1999 | |
382f2a3d | 2000 | if (bfd_is_com_section (output_section) |
4587b578 ILT |
2001 | || bfd_is_abs_section (output_section) |
2002 | || bfd_is_und_section (output_section)) | |
ce07dd7c | 2003 | { |
4587b578 | 2004 | if (bfd_abs_section_ptr->symbol == sym) |
2768b3f7 SC |
2005 | { |
2006 | /* Whoops, looked like an abs symbol, but is really an offset | |
2007 | from the abs section */ | |
18de3f19 | 2008 | r_index = N_ABS; |
2768b3f7 SC |
2009 | r_extern = 0; |
2010 | } | |
c188b0be | 2011 | else |
2768b3f7 SC |
2012 | { |
2013 | /* Fill in symbol */ | |
2014 | r_extern = 1; | |
ae115e51 | 2015 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; |
c188b0be | 2016 | |
2768b3f7 | 2017 | } |
ce07dd7c | 2018 | } |
c188b0be | 2019 | else |
ce07dd7c KR |
2020 | { |
2021 | /* Just an ordinary section */ | |
2022 | r_extern = 0; | |
c188b0be | 2023 | r_index = output_section->target_index; |
ce07dd7c KR |
2024 | } |
2025 | ||
6db82ea7 | 2026 | /* now the fun stuff */ |
64d5f5d0 | 2027 | if (bfd_header_big_endian (abfd)) { |
7ed4093a SC |
2028 | natptr->r_index[0] = r_index >> 16; |
2029 | natptr->r_index[1] = r_index >> 8; | |
2030 | natptr->r_index[2] = r_index; | |
2031 | natptr->r_type[0] = | |
6db82ea7 SC |
2032 | (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0) |
2033 | | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0) | |
2034 | | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0) | |
2035 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0) | |
2036 | | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0) | |
2037 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG); | |
7ed4093a | 2038 | } else { |
6db82ea7 SC |
2039 | natptr->r_index[2] = r_index >> 16; |
2040 | natptr->r_index[1] = r_index >> 8; | |
2041 | natptr->r_index[0] = r_index; | |
2042 | natptr->r_type[0] = | |
2043 | (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0) | |
7ed4093a | 2044 | | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0) |
6db82ea7 SC |
2045 | | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0) |
2046 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0) | |
2047 | | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0) | |
2048 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
2049 | } | |
3f7607af | 2050 | } |
7ed4093a SC |
2051 | |
2052 | ||
2053 | /* Extended stuff */ | |
2054 | /* Output extended relocation information to a file in target byte order. */ | |
2055 | ||
6ccdc203 ILT |
2056 | extern void NAME(aout,swap_ext_reloc_out) |
2057 | PARAMS ((bfd *, arelent *, struct reloc_ext_external *)); | |
2058 | ||
7ed4093a | 2059 | void |
8eb5d4be JK |
2060 | NAME(aout,swap_ext_reloc_out) (abfd, g, natptr) |
2061 | bfd *abfd; | |
2062 | arelent *g; | |
2063 | register struct reloc_ext_external *natptr; | |
3f7607af | 2064 | { |
6db82ea7 SC |
2065 | int r_index; |
2066 | int r_extern; | |
2067 | unsigned int r_type; | |
2068 | unsigned int r_addend; | |
c188b0be | 2069 | asymbol *sym = *(g->sym_ptr_ptr); |
6db82ea7 | 2070 | asection *output_section = sym->section->output_section; |
c188b0be | 2071 | |
6db82ea7 | 2072 | PUT_WORD (abfd, g->address, natptr->r_address); |
c188b0be | 2073 | |
6db82ea7 | 2074 | r_type = (unsigned int) g->howto->type; |
7ed4093a | 2075 | |
ae115e51 ILT |
2076 | r_addend = g->addend; |
2077 | if ((sym->flags & BSF_SECTION_SYM) != 0) | |
2078 | r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma; | |
7ed4093a | 2079 | |
c188b0be | 2080 | /* If this relocation is relative to a symbol then set the |
2768b3f7 SC |
2081 | r_index to the symbols index, and the r_extern bit. |
2082 | ||
2083 | Absolute symbols can come in in two ways, either as an offset | |
2084 | from the abs section, or as a symbol which has an abs value. | |
c188b0be DM |
2085 | check for that here. */ |
2086 | ||
ae115e51 | 2087 | if (bfd_is_abs_section (bfd_get_section (sym))) |
2768b3f7 | 2088 | { |
2768b3f7 | 2089 | r_extern = 0; |
18de3f19 | 2090 | r_index = N_ABS; |
ae115e51 ILT |
2091 | } |
2092 | else if ((sym->flags & BSF_SECTION_SYM) == 0) | |
2768b3f7 | 2093 | { |
f69e888e ILT |
2094 | if (bfd_is_und_section (bfd_get_section (sym)) |
2095 | || (sym->flags & BSF_GLOBAL) != 0) | |
2096 | r_extern = 1; | |
2097 | else | |
2098 | r_extern = 0; | |
ae115e51 | 2099 | r_index = (*(g->sym_ptr_ptr))->KEEPIT; |
2768b3f7 | 2100 | } |
c188b0be | 2101 | else |
ae115e51 ILT |
2102 | { |
2103 | /* Just an ordinary section */ | |
2104 | r_extern = 0; | |
2105 | r_index = output_section->target_index; | |
2106 | } | |
c188b0be | 2107 | |
7ed4093a | 2108 | /* now the fun stuff */ |
64d5f5d0 | 2109 | if (bfd_header_big_endian (abfd)) { |
2768b3f7 SC |
2110 | natptr->r_index[0] = r_index >> 16; |
2111 | natptr->r_index[1] = r_index >> 8; | |
2112 | natptr->r_index[2] = r_index; | |
2113 | natptr->r_type[0] = | |
c188b0be DM |
2114 | ((r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0) |
2115 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
2768b3f7 SC |
2116 | } else { |
2117 | natptr->r_index[2] = r_index >> 16; | |
2118 | natptr->r_index[1] = r_index >> 8; | |
2119 | natptr->r_index[0] = r_index; | |
2120 | natptr->r_type[0] = | |
2121 | (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0) | |
2122 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
2123 | } | |
7ed4093a SC |
2124 | |
2125 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
2126 | } | |
2127 | ||
6db82ea7 SC |
2128 | /* BFD deals internally with all things based from the section they're |
2129 | in. so, something in 10 bytes into a text section with a base of | |
c188b0be | 2130 | 50 would have a symbol (.text+10) and know .text vma was 50. |
6db82ea7 SC |
2131 | |
2132 | Aout keeps all it's symbols based from zero, so the symbol would | |
2133 | contain 60. This macro subs the base of each section from the value | |
2134 | to give the true offset from the section */ | |
2135 | ||
2136 | ||
7ed4093a SC |
2137 | #define MOVE_ADDRESS(ad) \ |
2138 | if (r_extern) { \ | |
6db82ea7 SC |
2139 | /* undefined symbol */ \ |
2140 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
2141 | cache_ptr->addend = ad; \ | |
2142 | } else { \ | |
2143 | /* defined, section relative. replace symbol with pointer to \ | |
2144 | symbol which points to section */ \ | |
7ed4093a SC |
2145 | switch (r_index) { \ |
2146 | case N_TEXT: \ | |
2147 | case N_TEXT | N_EXT: \ | |
6db82ea7 | 2148 | cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
2149 | cache_ptr->addend = ad - su->textsec->vma; \ |
2150 | break; \ | |
2151 | case N_DATA: \ | |
2152 | case N_DATA | N_EXT: \ | |
6db82ea7 | 2153 | cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
2154 | cache_ptr->addend = ad - su->datasec->vma; \ |
2155 | break; \ | |
2156 | case N_BSS: \ | |
2157 | case N_BSS | N_EXT: \ | |
6db82ea7 | 2158 | cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
2159 | cache_ptr->addend = ad - su->bsssec->vma; \ |
2160 | break; \ | |
6db82ea7 | 2161 | default: \ |
7ed4093a SC |
2162 | case N_ABS: \ |
2163 | case N_ABS | N_EXT: \ | |
4587b578 | 2164 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ |
6db82ea7 | 2165 | cache_ptr->addend = ad; \ |
7ed4093a SC |
2166 | break; \ |
2167 | } \ | |
2168 | } \ | |
2169 | ||
2170 | void | |
2f675427 | 2171 | NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount) |
8eb5d4be JK |
2172 | bfd *abfd; |
2173 | struct reloc_ext_external *bytes; | |
2174 | arelent *cache_ptr; | |
2175 | asymbol **symbols; | |
2f675427 | 2176 | bfd_size_type symcount; |
7ed4093a | 2177 | { |
ae115e51 | 2178 | unsigned int r_index; |
7ed4093a SC |
2179 | int r_extern; |
2180 | unsigned int r_type; | |
6db82ea7 | 2181 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
7ed4093a SC |
2182 | |
2183 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
2184 | ||
2185 | /* now the fun stuff */ | |
64d5f5d0 | 2186 | if (bfd_header_big_endian (abfd)) { |
382f2a3d ILT |
2187 | r_index = (bytes->r_index[0] << 16) |
2188 | | (bytes->r_index[1] << 8) | |
2189 | | bytes->r_index[2]; | |
7ed4093a SC |
2190 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); |
2191 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
2192 | >> RELOC_EXT_BITS_TYPE_SH_BIG; | |
2193 | } else { | |
382f2a3d ILT |
2194 | r_index = (bytes->r_index[2] << 16) |
2195 | | (bytes->r_index[1] << 8) | |
2196 | | bytes->r_index[0]; | |
7ed4093a SC |
2197 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); |
2198 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
2199 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE; | |
2200 | } | |
2201 | ||
2f675427 ILT |
2202 | cache_ptr->howto = howto_table_ext + r_type; |
2203 | ||
2204 | /* Base relative relocs are always against the symbol table, | |
2205 | regardless of the setting of r_extern. r_extern just reflects | |
2206 | whether the symbol the reloc is against is local or global. */ | |
2207 | if (r_type == RELOC_BASE10 | |
2208 | || r_type == RELOC_BASE13 | |
2209 | || r_type == RELOC_BASE22) | |
2210 | r_extern = 1; | |
2211 | ||
2212 | if (r_extern && r_index > symcount) | |
773033d2 ILT |
2213 | { |
2214 | /* We could arrange to return an error, but it might be useful | |
2215 | to see the file even if it is bad. */ | |
2216 | r_extern = 0; | |
2217 | r_index = N_ABS; | |
2218 | } | |
2219 | ||
6db82ea7 | 2220 | MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend)); |
7ed4093a SC |
2221 | } |
2222 | ||
2223 | void | |
2f675427 | 2224 | NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount) |
8eb5d4be JK |
2225 | bfd *abfd; |
2226 | struct reloc_std_external *bytes; | |
2227 | arelent *cache_ptr; | |
2228 | asymbol **symbols; | |
2f675427 | 2229 | bfd_size_type symcount; |
7ed4093a | 2230 | { |
ae115e51 | 2231 | unsigned int r_index; |
7ed4093a SC |
2232 | int r_extern; |
2233 | unsigned int r_length; | |
2234 | int r_pcrel; | |
2235 | int r_baserel, r_jmptable, r_relative; | |
6db82ea7 | 2236 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
ae115e51 | 2237 | unsigned int howto_idx; |
7ed4093a | 2238 | |
34dd8ba3 | 2239 | cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address); |
7ed4093a SC |
2240 | |
2241 | /* now the fun stuff */ | |
64d5f5d0 | 2242 | if (bfd_header_big_endian (abfd)) { |
382f2a3d ILT |
2243 | r_index = (bytes->r_index[0] << 16) |
2244 | | (bytes->r_index[1] << 8) | |
2245 | | bytes->r_index[2]; | |
7ed4093a SC |
2246 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); |
2247 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
2248 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
2249 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
2250 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
c188b0be | 2251 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) |
7ed4093a SC |
2252 | >> RELOC_STD_BITS_LENGTH_SH_BIG; |
2253 | } else { | |
382f2a3d ILT |
2254 | r_index = (bytes->r_index[2] << 16) |
2255 | | (bytes->r_index[1] << 8) | |
2256 | | bytes->r_index[0]; | |
7ed4093a SC |
2257 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); |
2258 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
2259 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
2260 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
2261 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
c188b0be | 2262 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) |
7ed4093a SC |
2263 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE; |
2264 | } | |
2265 | ||
cb9461ff JK |
2266 | howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel |
2267 | + 16 * r_jmptable + 32 * r_relative; | |
c188b0be DM |
2268 | BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std)); |
2269 | cache_ptr->howto = howto_table_std + howto_idx; | |
ae115e51 | 2270 | BFD_ASSERT (cache_ptr->howto->type != (unsigned int) -1); |
7ed4093a | 2271 | |
2f675427 ILT |
2272 | /* Base relative relocs are always against the symbol table, |
2273 | regardless of the setting of r_extern. r_extern just reflects | |
2274 | whether the symbol the reloc is against is local or global. */ | |
2275 | if (r_baserel) | |
2276 | r_extern = 1; | |
2277 | ||
2278 | if (r_extern && r_index > symcount) | |
773033d2 ILT |
2279 | { |
2280 | /* We could arrange to return an error, but it might be useful | |
2281 | to see the file even if it is bad. */ | |
2282 | r_extern = 0; | |
2283 | r_index = N_ABS; | |
2284 | } | |
2285 | ||
7ed4093a SC |
2286 | MOVE_ADDRESS(0); |
2287 | } | |
2288 | ||
5c8444f8 | 2289 | /* Read and swap the relocs for a section. */ |
7ed4093a SC |
2290 | |
2291 | boolean | |
8eb5d4be JK |
2292 | NAME(aout,slurp_reloc_table) (abfd, asect, symbols) |
2293 | bfd *abfd; | |
2294 | sec_ptr asect; | |
2295 | asymbol **symbols; | |
7ed4093a SC |
2296 | { |
2297 | unsigned int count; | |
2298 | bfd_size_type reloc_size; | |
2299 | PTR relocs; | |
2300 | arelent *reloc_cache; | |
2301 | size_t each_size; | |
0ee75d02 ILT |
2302 | unsigned int counter = 0; |
2303 | arelent *cache_ptr; | |
7ed4093a | 2304 | |
5c8444f8 ILT |
2305 | if (asect->relocation) |
2306 | return true; | |
7ed4093a | 2307 | |
5c8444f8 ILT |
2308 | if (asect->flags & SEC_CONSTRUCTOR) |
2309 | return true; | |
7ed4093a | 2310 | |
0ee75d02 | 2311 | if (asect == obj_datasec (abfd)) |
7ed4093a | 2312 | reloc_size = exec_hdr(abfd)->a_drsize; |
0ee75d02 | 2313 | else if (asect == obj_textsec (abfd)) |
7ed4093a | 2314 | reloc_size = exec_hdr(abfd)->a_trsize; |
f42fe159 ILT |
2315 | else if (asect == obj_bsssec (abfd)) |
2316 | reloc_size = 0; | |
0ee75d02 ILT |
2317 | else |
2318 | { | |
68241b2b | 2319 | bfd_set_error (bfd_error_invalid_operation); |
0ee75d02 ILT |
2320 | return false; |
2321 | } | |
2322 | ||
5c8444f8 ILT |
2323 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) |
2324 | return false; | |
2325 | ||
7ed4093a SC |
2326 | each_size = obj_reloc_entry_size (abfd); |
2327 | ||
2328 | count = reloc_size / each_size; | |
2329 | ||
58142f10 | 2330 | reloc_cache = (arelent *) bfd_malloc ((size_t) (count * sizeof (arelent))); |
5c8444f8 | 2331 | if (reloc_cache == NULL && count != 0) |
58142f10 | 2332 | return false; |
fa77c704 | 2333 | memset (reloc_cache, 0, count * sizeof (arelent)); |
7ed4093a | 2334 | |
58142f10 | 2335 | relocs = bfd_malloc ((size_t) reloc_size); |
5c8444f8 | 2336 | if (relocs == NULL && reloc_size != 0) |
0ee75d02 | 2337 | { |
5c8444f8 | 2338 | free (reloc_cache); |
5c8444f8 | 2339 | return false; |
0ee75d02 | 2340 | } |
7ed4093a | 2341 | |
0ee75d02 ILT |
2342 | if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) |
2343 | { | |
5c8444f8 ILT |
2344 | free (relocs); |
2345 | free (reloc_cache); | |
0ee75d02 ILT |
2346 | return false; |
2347 | } | |
7ed4093a | 2348 | |
0ee75d02 ILT |
2349 | cache_ptr = reloc_cache; |
2350 | if (each_size == RELOC_EXT_SIZE) | |
2351 | { | |
2352 | register struct reloc_ext_external *rptr = | |
2353 | (struct reloc_ext_external *) relocs; | |
7ed4093a | 2354 | |
0ee75d02 | 2355 | for (; counter < count; counter++, rptr++, cache_ptr++) |
2f675427 ILT |
2356 | NAME(aout,swap_ext_reloc_in) (abfd, rptr, cache_ptr, symbols, |
2357 | bfd_get_symcount (abfd)); | |
7ed4093a | 2358 | } |
0ee75d02 ILT |
2359 | else |
2360 | { | |
5c8444f8 ILT |
2361 | register struct reloc_std_external *rptr = |
2362 | (struct reloc_std_external *) relocs; | |
7ed4093a | 2363 | |
0ee75d02 | 2364 | for (; counter < count; counter++, rptr++, cache_ptr++) |
2f675427 ILT |
2365 | MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols, |
2366 | bfd_get_symcount (abfd)); | |
7ed4093a SC |
2367 | } |
2368 | ||
5c8444f8 ILT |
2369 | free (relocs); |
2370 | ||
7ed4093a | 2371 | asect->relocation = reloc_cache; |
0ee75d02 | 2372 | asect->reloc_count = cache_ptr - reloc_cache; |
5c8444f8 | 2373 | |
7ed4093a SC |
2374 | return true; |
2375 | } | |
2376 | ||
7ed4093a SC |
2377 | /* Write out a relocation section into an object file. */ |
2378 | ||
2379 | boolean | |
8eb5d4be JK |
2380 | NAME(aout,squirt_out_relocs) (abfd, section) |
2381 | bfd *abfd; | |
2382 | asection *section; | |
7ed4093a SC |
2383 | { |
2384 | arelent **generic; | |
2385 | unsigned char *native, *natptr; | |
2386 | size_t each_size; | |
2387 | ||
2388 | unsigned int count = section->reloc_count; | |
2389 | size_t natsize; | |
2390 | ||
b7d1158a ILT |
2391 | if (count == 0 || section->orelocation == NULL) |
2392 | return true; | |
7ed4093a SC |
2393 | |
2394 | each_size = obj_reloc_entry_size (abfd); | |
2395 | natsize = each_size * count; | |
2396 | native = (unsigned char *) bfd_zalloc (abfd, natsize); | |
a9713b91 | 2397 | if (!native) |
7ed4093a | 2398 | return false; |
7ed4093a SC |
2399 | |
2400 | generic = section->orelocation; | |
2401 | ||
c188b0be | 2402 | if (each_size == RELOC_EXT_SIZE) |
7ed4093a SC |
2403 | { |
2404 | for (natptr = native; | |
2405 | count != 0; | |
2406 | --count, natptr += each_size, ++generic) | |
2407 | NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr); | |
2408 | } | |
c188b0be | 2409 | else |
7ed4093a SC |
2410 | { |
2411 | for (natptr = native; | |
2412 | count != 0; | |
2413 | --count, natptr += each_size, ++generic) | |
f42fe159 | 2414 | MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr); |
7ed4093a SC |
2415 | } |
2416 | ||
2417 | if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) { | |
2418 | bfd_release(abfd, native); | |
2419 | return false; | |
2420 | } | |
2421 | bfd_release (abfd, native); | |
2422 | ||
2423 | return true; | |
2424 | } | |
2425 | ||
2426 | /* This is stupid. This function should be a boolean predicate */ | |
326e32d7 | 2427 | long |
8eb5d4be JK |
2428 | NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols) |
2429 | bfd *abfd; | |
2430 | sec_ptr section; | |
2431 | arelent **relptr; | |
2432 | asymbol **symbols; | |
7ed4093a SC |
2433 | { |
2434 | arelent *tblptr = section->relocation; | |
2435 | unsigned int count; | |
2436 | ||
4f019d04 ILT |
2437 | if (section == obj_bsssec (abfd)) |
2438 | { | |
2439 | *relptr = NULL; | |
2440 | return 0; | |
2441 | } | |
2442 | ||
7ed4093a | 2443 | if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols))) |
326e32d7 | 2444 | return -1; |
7ed4093a SC |
2445 | |
2446 | if (section->flags & SEC_CONSTRUCTOR) { | |
2447 | arelent_chain *chain = section->constructor_chain; | |
2448 | for (count = 0; count < section->reloc_count; count ++) { | |
2449 | *relptr ++ = &chain->relent; | |
2450 | chain = chain->next; | |
2451 | } | |
2452 | } | |
2453 | else { | |
2454 | tblptr = section->relocation; | |
7ed4093a | 2455 | |
c188b0be | 2456 | for (count = 0; count++ < section->reloc_count;) |
7ed4093a SC |
2457 | { |
2458 | *relptr++ = tblptr++; | |
2459 | } | |
2460 | } | |
2461 | *relptr = 0; | |
2462 | ||
2463 | return section->reloc_count; | |
2464 | } | |
2465 | ||
326e32d7 | 2466 | long |
8eb5d4be JK |
2467 | NAME(aout,get_reloc_upper_bound) (abfd, asect) |
2468 | bfd *abfd; | |
2469 | sec_ptr asect; | |
7ed4093a SC |
2470 | { |
2471 | if (bfd_get_format (abfd) != bfd_object) { | |
68241b2b | 2472 | bfd_set_error (bfd_error_invalid_operation); |
326e32d7 | 2473 | return -1; |
7ed4093a SC |
2474 | } |
2475 | if (asect->flags & SEC_CONSTRUCTOR) { | |
2476 | return (sizeof (arelent *) * (asect->reloc_count+1)); | |
2477 | } | |
2478 | ||
7ed4093a | 2479 | if (asect == obj_datasec (abfd)) |
fa77c704 ILT |
2480 | return (sizeof (arelent *) |
2481 | * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd)) | |
2482 | + 1)); | |
7ed4093a SC |
2483 | |
2484 | if (asect == obj_textsec (abfd)) | |
fa77c704 ILT |
2485 | return (sizeof (arelent *) |
2486 | * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd)) | |
2487 | + 1)); | |
7ed4093a | 2488 | |
4f019d04 ILT |
2489 | if (asect == obj_bsssec (abfd)) |
2490 | return sizeof (arelent *); | |
2491 | ||
f42fe159 ILT |
2492 | if (asect == obj_bsssec (abfd)) |
2493 | return 0; | |
2494 | ||
68241b2b | 2495 | bfd_set_error (bfd_error_invalid_operation); |
326e32d7 | 2496 | return -1; |
7ed4093a SC |
2497 | } |
2498 | ||
2499 | \f | |
326e32d7 | 2500 | long |
8eb5d4be JK |
2501 | NAME(aout,get_symtab_upper_bound) (abfd) |
2502 | bfd *abfd; | |
7ed4093a | 2503 | { |
326e32d7 ILT |
2504 | if (!NAME(aout,slurp_symbol_table)(abfd)) |
2505 | return -1; | |
7ed4093a SC |
2506 | |
2507 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
2508 | } | |
728472f1 ILT |
2509 | |
2510 | /*ARGSUSED*/ | |
7ed4093a | 2511 | alent * |
8eb5d4be JK |
2512 | NAME(aout,get_lineno) (ignore_abfd, ignore_symbol) |
2513 | bfd *ignore_abfd; | |
2514 | asymbol *ignore_symbol; | |
7ed4093a SC |
2515 | { |
2516 | return (alent *)NULL; | |
2517 | } | |
2518 | ||
728472f1 | 2519 | /*ARGSUSED*/ |
c188b0be | 2520 | void |
8eb5d4be JK |
2521 | NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret) |
2522 | bfd *ignore_abfd; | |
2523 | asymbol *symbol; | |
2524 | symbol_info *ret; | |
34dd8ba3 JG |
2525 | { |
2526 | bfd_symbol_info (symbol, ret); | |
2527 | ||
2528 | if (ret->type == '?') | |
2529 | { | |
2530 | int type_code = aout_symbol(symbol)->type & 0xff; | |
c189fdfb | 2531 | const char *stab_name = bfd_get_stab_name (type_code); |
34dd8ba3 JG |
2532 | static char buf[10]; |
2533 | ||
2534 | if (stab_name == NULL) | |
2535 | { | |
2536 | sprintf(buf, "(%d)", type_code); | |
2537 | stab_name = buf; | |
2538 | } | |
2539 | ret->type = '-'; | |
64d5f5d0 | 2540 | ret->stab_type = type_code; |
34dd8ba3 JG |
2541 | ret->stab_other = (unsigned)(aout_symbol(symbol)->other & 0xff); |
2542 | ret->stab_desc = (unsigned)(aout_symbol(symbol)->desc & 0xffff); | |
2543 | ret->stab_name = stab_name; | |
2544 | } | |
2545 | } | |
7ed4093a | 2546 | |
728472f1 | 2547 | /*ARGSUSED*/ |
c188b0be | 2548 | void |
8eb5d4be JK |
2549 | NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how) |
2550 | bfd *ignore_abfd; | |
2551 | PTR afile; | |
2552 | asymbol *symbol; | |
2553 | bfd_print_symbol_type how; | |
7ed4093a SC |
2554 | { |
2555 | FILE *file = (FILE *)afile; | |
2556 | ||
2557 | switch (how) { | |
9e2dad8e | 2558 | case bfd_print_symbol_name: |
fb3be09b JG |
2559 | if (symbol->name) |
2560 | fprintf(file,"%s", symbol->name); | |
7ed4093a | 2561 | break; |
9e2dad8e | 2562 | case bfd_print_symbol_more: |
7ed4093a SC |
2563 | fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff), |
2564 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
2565 | (unsigned)(aout_symbol(symbol)->type)); | |
2566 | break; | |
9e2dad8e | 2567 | case bfd_print_symbol_all: |
7ed4093a | 2568 | { |
6db82ea7 SC |
2569 | CONST char *section_name = symbol->section->name; |
2570 | ||
7ed4093a SC |
2571 | |
2572 | bfd_print_symbol_vandf((PTR)file,symbol); | |
2573 | ||
fb3be09b | 2574 | fprintf(file," %-5s %04x %02x %02x", |
7ed4093a SC |
2575 | section_name, |
2576 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
2577 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
9e2dad8e | 2578 | (unsigned)(aout_symbol(symbol)->type & 0xff)); |
fb3be09b JG |
2579 | if (symbol->name) |
2580 | fprintf(file," %s", symbol->name); | |
7ed4093a SC |
2581 | } |
2582 | break; | |
2583 | } | |
2584 | } | |
2585 | ||
c3246d9b ILT |
2586 | /* If we don't have to allocate more than 1MB to hold the generic |
2587 | symbols, we use the generic minisymbol methord: it's faster, since | |
2588 | it only translates the symbols once, not multiple times. */ | |
2589 | #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) | |
2590 | ||
2591 | /* Read minisymbols. For minisymbols, we use the unmodified a.out | |
2592 | symbols. The minisymbol_to_symbol function translates these into | |
2593 | BFD asymbol structures. */ | |
2594 | ||
2595 | long | |
2596 | NAME(aout,read_minisymbols) (abfd, dynamic, minisymsp, sizep) | |
2597 | bfd *abfd; | |
2598 | boolean dynamic; | |
2599 | PTR *minisymsp; | |
2600 | unsigned int *sizep; | |
2601 | { | |
2602 | if (dynamic) | |
2603 | { | |
2604 | /* We could handle the dynamic symbols here as well, but it's | |
2605 | easier to hand them off. */ | |
2606 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2607 | } | |
2608 | ||
2609 | if (! aout_get_external_symbols (abfd)) | |
2610 | return -1; | |
2611 | ||
2612 | if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2613 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2614 | ||
2615 | *minisymsp = (PTR) obj_aout_external_syms (abfd); | |
2616 | ||
2617 | /* By passing the external symbols back from this routine, we are | |
2618 | giving up control over the memory block. Clear | |
2619 | obj_aout_external_syms, so that we do not try to free it | |
2620 | ourselves. */ | |
2621 | obj_aout_external_syms (abfd) = NULL; | |
2622 | ||
2623 | *sizep = EXTERNAL_NLIST_SIZE; | |
2624 | return obj_aout_external_sym_count (abfd); | |
2625 | } | |
2626 | ||
2627 | /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an | |
2628 | unmodified a.out symbol. The SYM argument is a structure returned | |
2629 | by bfd_make_empty_symbol, which we fill in here. */ | |
2630 | ||
2631 | asymbol * | |
2632 | NAME(aout,minisymbol_to_symbol) (abfd, dynamic, minisym, sym) | |
2633 | bfd *abfd; | |
2634 | boolean dynamic; | |
2635 | const PTR minisym; | |
2636 | asymbol *sym; | |
2637 | { | |
2638 | if (dynamic | |
2639 | || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2640 | return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); | |
2641 | ||
2642 | memset (sym, 0, sizeof (aout_symbol_type)); | |
2643 | ||
2644 | /* We call translate_symbol_table to translate a single symbol. */ | |
2645 | if (! (NAME(aout,translate_symbol_table) | |
2646 | (abfd, | |
2647 | (aout_symbol_type *) sym, | |
2648 | (struct external_nlist *) minisym, | |
2649 | (bfd_size_type) 1, | |
2650 | obj_aout_external_strings (abfd), | |
2651 | obj_aout_external_string_size (abfd), | |
2652 | false))) | |
2653 | return NULL; | |
2654 | ||
2655 | return sym; | |
2656 | } | |
2657 | ||
c188b0be | 2658 | /* |
6724ff46 | 2659 | provided a BFD, a section and an offset into the section, calculate |
7ed4093a SC |
2660 | and return the name of the source file and the line nearest to the |
2661 | wanted location. | |
2662 | */ | |
c188b0be | 2663 | |
7ed4093a | 2664 | boolean |
8eb5d4be JK |
2665 | NAME(aout,find_nearest_line) |
2666 | (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr) | |
2667 | bfd *abfd; | |
2668 | asection *section; | |
2669 | asymbol **symbols; | |
2670 | bfd_vma offset; | |
2671 | CONST char **filename_ptr; | |
2672 | CONST char **functionname_ptr; | |
2673 | unsigned int *line_ptr; | |
7ed4093a SC |
2674 | { |
2675 | /* Run down the file looking for the filename, function and linenumber */ | |
2676 | asymbol **p; | |
6db82ea7 SC |
2677 | CONST char *directory_name = NULL; |
2678 | CONST char *main_file_name = NULL; | |
2679 | CONST char *current_file_name = NULL; | |
2680 | CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */ | |
ae115e51 | 2681 | bfd_vma low_line_vma = 0; |
7ed4093a SC |
2682 | bfd_vma low_func_vma = 0; |
2683 | asymbol *func = 0; | |
f1c6dd5d ILT |
2684 | size_t filelen, funclen; |
2685 | char *buf; | |
2686 | ||
7ed4093a SC |
2687 | *filename_ptr = abfd->filename; |
2688 | *functionname_ptr = 0; | |
2689 | *line_ptr = 0; | |
2690 | if (symbols != (asymbol **)NULL) { | |
2691 | for (p = symbols; *p; p++) { | |
2692 | aout_symbol_type *q = (aout_symbol_type *)(*p); | |
98d43107 | 2693 | next: |
7ed4093a | 2694 | switch (q->type){ |
167dc907 ILT |
2695 | case N_TEXT: |
2696 | /* If this looks like a file name symbol, and it comes after | |
2697 | the line number we have found so far, but before the | |
2698 | offset, then we have probably not found the right line | |
2699 | number. */ | |
2700 | if (q->symbol.value <= offset | |
2701 | && ((q->symbol.value > low_line_vma | |
2702 | && (line_file_name != NULL | |
2703 | || *line_ptr != 0)) | |
2704 | || (q->symbol.value > low_func_vma | |
2705 | && func != NULL))) | |
2706 | { | |
2707 | const char *symname; | |
2708 | ||
2709 | symname = q->symbol.name; | |
2710 | if (strcmp (symname + strlen (symname) - 2, ".o") == 0) | |
2711 | { | |
2712 | if (q->symbol.value > low_line_vma) | |
2713 | { | |
2714 | *line_ptr = 0; | |
2715 | line_file_name = NULL; | |
2716 | } | |
2717 | if (q->symbol.value > low_func_vma) | |
2718 | func = NULL; | |
2719 | } | |
2720 | } | |
2721 | break; | |
2722 | ||
7ed4093a | 2723 | case N_SO: |
167dc907 ILT |
2724 | /* If this symbol is less than the offset, but greater than |
2725 | the line number we have found so far, then we have not | |
2726 | found the right line number. */ | |
2727 | if (q->symbol.value <= offset) | |
2728 | { | |
2729 | if (q->symbol.value > low_line_vma) | |
2730 | { | |
2731 | *line_ptr = 0; | |
2732 | line_file_name = NULL; | |
2733 | } | |
2734 | if (q->symbol.value > low_func_vma) | |
2735 | func = NULL; | |
2736 | } | |
2737 | ||
3f7607af | 2738 | main_file_name = current_file_name = q->symbol.name; |
98d43107 JG |
2739 | /* Look ahead to next symbol to check if that too is an N_SO. */ |
2740 | p++; | |
2741 | if (*p == NULL) | |
2742 | break; | |
2743 | q = (aout_symbol_type *)(*p); | |
6db82ea7 | 2744 | if (q->type != (int)N_SO) |
98d43107 JG |
2745 | goto next; |
2746 | ||
2747 | /* Found a second N_SO First is directory; second is filename. */ | |
3f7607af PB |
2748 | directory_name = current_file_name; |
2749 | main_file_name = current_file_name = q->symbol.name; | |
2750 | if (obj_textsec(abfd) != section) | |
2751 | goto done; | |
2752 | break; | |
2753 | case N_SOL: | |
2754 | current_file_name = q->symbol.name; | |
7ed4093a | 2755 | break; |
3f7607af | 2756 | |
7ed4093a SC |
2757 | case N_SLINE: |
2758 | ||
2759 | case N_DSLINE: | |
2760 | case N_BSLINE: | |
ae115e51 ILT |
2761 | /* We'll keep this if it resolves nearer than the one we have |
2762 | already. */ | |
2763 | if (q->symbol.value >= low_line_vma | |
2764 | && q->symbol.value <= offset) | |
2765 | { | |
2766 | *line_ptr = q->desc; | |
2767 | low_line_vma = q->symbol.value; | |
2768 | line_file_name = current_file_name; | |
2769 | } | |
7ed4093a SC |
2770 | break; |
2771 | case N_FUN: | |
2772 | { | |
2773 | /* We'll keep this if it is nearer than the one we have already */ | |
2774 | if (q->symbol.value >= low_func_vma && | |
2775 | q->symbol.value <= offset) { | |
2776 | low_func_vma = q->symbol.value; | |
2777 | func = (asymbol *)q; | |
2778 | } | |
ae115e51 | 2779 | else if (q->symbol.value > offset) |
3f7607af | 2780 | goto done; |
7ed4093a SC |
2781 | } |
2782 | break; | |
2783 | } | |
2784 | } | |
2785 | } | |
3f7607af PB |
2786 | |
2787 | done: | |
f1c6dd5d | 2788 | if (*line_ptr != 0) |
3f7607af | 2789 | main_file_name = line_file_name; |
f1c6dd5d ILT |
2790 | |
2791 | if (main_file_name == NULL | |
2792 | || main_file_name[0] == '/' | |
2793 | || directory_name == NULL) | |
2794 | filelen = 0; | |
2795 | else | |
2796 | filelen = strlen (directory_name) + strlen (main_file_name); | |
2797 | if (func == NULL) | |
2798 | funclen = 0; | |
2799 | else | |
2800 | funclen = strlen (bfd_asymbol_name (func)); | |
2801 | ||
2802 | if (adata (abfd).line_buf != NULL) | |
2803 | free (adata (abfd).line_buf); | |
2804 | if (filelen + funclen == 0) | |
2805 | adata (abfd).line_buf = buf = NULL; | |
2806 | else | |
2807 | { | |
7dd3d45a | 2808 | buf = (char *) bfd_malloc (filelen + funclen + 3); |
58142f10 ILT |
2809 | adata (abfd).line_buf = buf; |
2810 | if (buf == NULL) | |
2811 | return false; | |
f1c6dd5d ILT |
2812 | } |
2813 | ||
2814 | if (main_file_name != NULL) | |
2815 | { | |
3f7607af | 2816 | if (main_file_name[0] == '/' || directory_name == NULL) |
f1c6dd5d ILT |
2817 | *filename_ptr = main_file_name; |
2818 | else | |
2819 | { | |
2820 | sprintf (buf, "%s%s", directory_name, main_file_name); | |
2821 | *filename_ptr = buf; | |
2822 | buf += filelen + 1; | |
2823 | } | |
2824 | } | |
2825 | ||
ae115e51 ILT |
2826 | if (func) |
2827 | { | |
f1c6dd5d | 2828 | const char *function = func->name; |
ae115e51 ILT |
2829 | char *p; |
2830 | ||
2831 | /* The caller expects a symbol name. We actually have a | |
2832 | function name, without the leading underscore. Put the | |
2833 | underscore back in, so that the caller gets a symbol name. */ | |
2834 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
f1c6dd5d | 2835 | strcpy (buf, function); |
ae115e51 ILT |
2836 | else |
2837 | { | |
f1c6dd5d ILT |
2838 | buf[0] = bfd_get_symbol_leading_char (abfd); |
2839 | strcpy (buf + 1, function); | |
ae115e51 | 2840 | } |
ae115e51 | 2841 | /* Have to remove : stuff */ |
f1c6dd5d | 2842 | p = strchr (buf, ':'); |
ae115e51 ILT |
2843 | if (p != NULL) |
2844 | *p = '\0'; | |
f1c6dd5d | 2845 | *functionname_ptr = buf; |
ae115e51 | 2846 | } |
f1c6dd5d | 2847 | |
7ed4093a | 2848 | return true; |
7ed4093a SC |
2849 | } |
2850 | ||
728472f1 | 2851 | /*ARGSUSED*/ |
c188b0be | 2852 | int |
8eb5d4be JK |
2853 | NAME(aout,sizeof_headers) (abfd, execable) |
2854 | bfd *abfd; | |
2855 | boolean execable; | |
7ed4093a | 2856 | { |
6db82ea7 | 2857 | return adata(abfd).exec_bytes_size; |
7ed4093a | 2858 | } |
5c8444f8 ILT |
2859 | |
2860 | /* Free all information we have cached for this BFD. We can always | |
2861 | read it again later if we need it. */ | |
2862 | ||
2863 | boolean | |
2864 | NAME(aout,bfd_free_cached_info) (abfd) | |
2865 | bfd *abfd; | |
2866 | { | |
2867 | asection *o; | |
2868 | ||
c4dd531f ILT |
2869 | if (bfd_get_format (abfd) != bfd_object) |
2870 | return true; | |
2871 | ||
4852416e DHW |
2872 | #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } |
2873 | BFCI_FREE (obj_aout_symbols (abfd)); | |
7ac84736 | 2874 | #ifdef USE_MMAP |
4fe6d901 KR |
2875 | obj_aout_external_syms (abfd) = 0; |
2876 | bfd_free_window (&obj_aout_sym_window (abfd)); | |
2877 | bfd_free_window (&obj_aout_string_window (abfd)); | |
2878 | obj_aout_external_strings (abfd) = 0; | |
7ac84736 KR |
2879 | #else |
2880 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2881 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
2882 | #endif | |
5c8444f8 | 2883 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
4852416e DHW |
2884 | BFCI_FREE (o->relocation); |
2885 | #undef BFCI_FREE | |
5c8444f8 ILT |
2886 | |
2887 | return true; | |
2888 | } | |
4c3721d5 ILT |
2889 | \f |
2890 | /* a.out link code. */ | |
2891 | ||
4c3721d5 ILT |
2892 | static boolean aout_link_add_object_symbols |
2893 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2894 | static boolean aout_link_check_archive_element | |
2895 | PARAMS ((bfd *, struct bfd_link_info *, boolean *)); | |
4c3721d5 ILT |
2896 | static boolean aout_link_free_symbols PARAMS ((bfd *)); |
2897 | static boolean aout_link_check_ar_symbols | |
2898 | PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded)); | |
2899 | static boolean aout_link_add_symbols | |
2900 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2901 | ||
2902 | /* Routine to create an entry in an a.out link hash table. */ | |
2903 | ||
e85e8bfe ILT |
2904 | struct bfd_hash_entry * |
2905 | NAME(aout,link_hash_newfunc) (entry, table, string) | |
4c3721d5 ILT |
2906 | struct bfd_hash_entry *entry; |
2907 | struct bfd_hash_table *table; | |
2908 | const char *string; | |
2909 | { | |
2910 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2911 | ||
2912 | /* Allocate the structure if it has not already been allocated by a | |
2913 | subclass. */ | |
2914 | if (ret == (struct aout_link_hash_entry *) NULL) | |
2915 | ret = ((struct aout_link_hash_entry *) | |
2916 | bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry))); | |
9783e04a | 2917 | if (ret == (struct aout_link_hash_entry *) NULL) |
a9713b91 | 2918 | return (struct bfd_hash_entry *) ret; |
4c3721d5 ILT |
2919 | |
2920 | /* Call the allocation method of the superclass. */ | |
2921 | ret = ((struct aout_link_hash_entry *) | |
2922 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2923 | table, string)); | |
9783e04a | 2924 | if (ret) |
35fee729 ILT |
2925 | { |
2926 | /* Set local fields. */ | |
2927 | ret->written = false; | |
2928 | ret->indx = -1; | |
2929 | } | |
4c3721d5 ILT |
2930 | |
2931 | return (struct bfd_hash_entry *) ret; | |
2932 | } | |
2933 | ||
e85e8bfe ILT |
2934 | /* Initialize an a.out link hash table. */ |
2935 | ||
2936 | boolean | |
2937 | NAME(aout,link_hash_table_init) (table, abfd, newfunc) | |
2938 | struct aout_link_hash_table *table; | |
2939 | bfd *abfd; | |
2940 | struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, | |
2941 | struct bfd_hash_table *, | |
2942 | const char *)); | |
2943 | { | |
2944 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
2945 | } | |
2946 | ||
4c3721d5 ILT |
2947 | /* Create an a.out link hash table. */ |
2948 | ||
2949 | struct bfd_link_hash_table * | |
2950 | NAME(aout,link_hash_table_create) (abfd) | |
2951 | bfd *abfd; | |
2952 | { | |
2953 | struct aout_link_hash_table *ret; | |
2954 | ||
2955 | ret = ((struct aout_link_hash_table *) | |
c3246d9b ILT |
2956 | bfd_alloc (abfd, sizeof (struct aout_link_hash_table))); |
2957 | if (ret == NULL) | |
a9713b91 | 2958 | return (struct bfd_link_hash_table *) NULL; |
e85e8bfe ILT |
2959 | if (! NAME(aout,link_hash_table_init) (ret, abfd, |
2960 | NAME(aout,link_hash_newfunc))) | |
4c3721d5 ILT |
2961 | { |
2962 | free (ret); | |
2963 | return (struct bfd_link_hash_table *) NULL; | |
2964 | } | |
2965 | return &ret->root; | |
2966 | } | |
2967 | ||
4c3721d5 ILT |
2968 | /* Given an a.out BFD, add symbols to the global hash table as |
2969 | appropriate. */ | |
2970 | ||
2971 | boolean | |
2972 | NAME(aout,link_add_symbols) (abfd, info) | |
2973 | bfd *abfd; | |
2974 | struct bfd_link_info *info; | |
2975 | { | |
2976 | switch (bfd_get_format (abfd)) | |
2977 | { | |
2978 | case bfd_object: | |
2979 | return aout_link_add_object_symbols (abfd, info); | |
2980 | case bfd_archive: | |
2981 | return _bfd_generic_link_add_archive_symbols | |
2982 | (abfd, info, aout_link_check_archive_element); | |
2983 | default: | |
68241b2b | 2984 | bfd_set_error (bfd_error_wrong_format); |
4c3721d5 ILT |
2985 | return false; |
2986 | } | |
2987 | } | |
2988 | ||
2989 | /* Add symbols from an a.out object file. */ | |
2990 | ||
2991 | static boolean | |
2992 | aout_link_add_object_symbols (abfd, info) | |
2993 | bfd *abfd; | |
2994 | struct bfd_link_info *info; | |
2995 | { | |
5c8444f8 | 2996 | if (! aout_get_external_symbols (abfd)) |
4c3721d5 ILT |
2997 | return false; |
2998 | if (! aout_link_add_symbols (abfd, info)) | |
2999 | return false; | |
3000 | if (! info->keep_memory) | |
3001 | { | |
3002 | if (! aout_link_free_symbols (abfd)) | |
3003 | return false; | |
3004 | } | |
3005 | return true; | |
3006 | } | |
3007 | ||
3008 | /* Check a single archive element to see if we need to include it in | |
3009 | the link. *PNEEDED is set according to whether this element is | |
3010 | needed in the link or not. This is called from | |
3011 | _bfd_generic_link_add_archive_symbols. */ | |
3012 | ||
3013 | static boolean | |
3014 | aout_link_check_archive_element (abfd, info, pneeded) | |
3015 | bfd *abfd; | |
3016 | struct bfd_link_info *info; | |
3017 | boolean *pneeded; | |
3018 | { | |
5c8444f8 | 3019 | if (! aout_get_external_symbols (abfd)) |
4c3721d5 ILT |
3020 | return false; |
3021 | ||
3022 | if (! aout_link_check_ar_symbols (abfd, info, pneeded)) | |
3023 | return false; | |
3024 | ||
3025 | if (*pneeded) | |
3026 | { | |
3027 | if (! aout_link_add_symbols (abfd, info)) | |
3028 | return false; | |
3029 | } | |
3030 | ||
1afd2380 | 3031 | if (! info->keep_memory || ! *pneeded) |
4c3721d5 ILT |
3032 | { |
3033 | if (! aout_link_free_symbols (abfd)) | |
3034 | return false; | |
3035 | } | |
3036 | ||
3037 | return true; | |
3038 | } | |
3039 | ||
4c3721d5 ILT |
3040 | /* Free up the internal symbols read from an a.out file. */ |
3041 | ||
3042 | static boolean | |
3043 | aout_link_free_symbols (abfd) | |
3044 | bfd *abfd; | |
3045 | { | |
3046 | if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) | |
3047 | { | |
7ac84736 | 3048 | #ifdef USE_MMAP |
4fe6d901 | 3049 | bfd_free_window (&obj_aout_sym_window (abfd)); |
7ac84736 KR |
3050 | #else |
3051 | free ((PTR) obj_aout_external_syms (abfd)); | |
3052 | #endif | |
4c3721d5 ILT |
3053 | obj_aout_external_syms (abfd) = (struct external_nlist *) NULL; |
3054 | } | |
3055 | if (obj_aout_external_strings (abfd) != (char *) NULL) | |
3056 | { | |
7ac84736 | 3057 | #ifdef USE_MMAP |
4fe6d901 | 3058 | bfd_free_window (&obj_aout_string_window (abfd)); |
7ac84736 KR |
3059 | #else |
3060 | free ((PTR) obj_aout_external_strings (abfd)); | |
3061 | #endif | |
4c3721d5 ILT |
3062 | obj_aout_external_strings (abfd) = (char *) NULL; |
3063 | } | |
3064 | return true; | |
3065 | } | |
3066 | ||
3067 | /* Look through the internal symbols to see if this object file should | |
3068 | be included in the link. We should include this object file if it | |
3069 | defines any symbols which are currently undefined. If this object | |
3070 | file defines a common symbol, then we may adjust the size of the | |
3071 | known symbol but we do not include the object file in the link | |
3072 | (unless there is some other reason to include it). */ | |
3073 | ||
3074 | static boolean | |
3075 | aout_link_check_ar_symbols (abfd, info, pneeded) | |
3076 | bfd *abfd; | |
3077 | struct bfd_link_info *info; | |
3078 | boolean *pneeded; | |
3079 | { | |
3080 | register struct external_nlist *p; | |
3081 | struct external_nlist *pend; | |
3082 | char *strings; | |
3083 | ||
3084 | *pneeded = false; | |
3085 | ||
3086 | /* Look through all the symbols. */ | |
3087 | p = obj_aout_external_syms (abfd); | |
3088 | pend = p + obj_aout_external_sym_count (abfd); | |
3089 | strings = obj_aout_external_strings (abfd); | |
3090 | for (; p < pend; p++) | |
3091 | { | |
3092 | int type = bfd_h_get_8 (abfd, p->e_type); | |
3093 | const char *name; | |
3094 | struct bfd_link_hash_entry *h; | |
3095 | ||
4298e311 ILT |
3096 | /* Ignore symbols that are not externally visible. This is an |
3097 | optimization only, as we check the type more thoroughly | |
3098 | below. */ | |
4587b578 ILT |
3099 | if (((type & N_EXT) == 0 |
3100 | || (type & N_STAB) != 0 | |
3101 | || type == N_FN) | |
4298e311 ILT |
3102 | && type != N_WEAKA |
3103 | && type != N_WEAKT | |
3104 | && type != N_WEAKD | |
3105 | && type != N_WEAKB) | |
9b39ed6b ILT |
3106 | { |
3107 | if (type == N_WARNING | |
3108 | || type == N_INDR) | |
3109 | ++p; | |
3110 | continue; | |
3111 | } | |
4c3721d5 ILT |
3112 | |
3113 | name = strings + GET_WORD (abfd, p->e_strx); | |
3114 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); | |
3115 | ||
3116 | /* We are only interested in symbols that are currently | |
3117 | undefined or common. */ | |
3118 | if (h == (struct bfd_link_hash_entry *) NULL | |
3119 | || (h->type != bfd_link_hash_undefined | |
3120 | && h->type != bfd_link_hash_common)) | |
9b39ed6b ILT |
3121 | { |
3122 | if (type == (N_INDR | N_EXT)) | |
3123 | ++p; | |
3124 | continue; | |
3125 | } | |
4c3721d5 | 3126 | |
9b39ed6b ILT |
3127 | if (type == (N_TEXT | N_EXT) |
3128 | || type == (N_DATA | N_EXT) | |
3129 | || type == (N_BSS | N_EXT) | |
3130 | || type == (N_ABS | N_EXT) | |
3131 | || type == (N_INDR | N_EXT)) | |
4c3721d5 ILT |
3132 | { |
3133 | /* This object file defines this symbol. We must link it | |
3134 | in. This is true regardless of whether the current | |
3135 | definition of the symbol is undefined or common. If the | |
3136 | current definition is common, we have a case in which we | |
3137 | have already seen an object file including | |
3138 | int a; | |
3139 | and this object file from the archive includes | |
3140 | int a = 5; | |
f88c9008 ILT |
3141 | In such a case we must include this object file. |
3142 | ||
3143 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
3144 | element if the symbol is defined in the .data section, | |
3145 | but not if it is defined in the .text section. That | |
3146 | seems a bit crazy to me, and I haven't implemented it. | |
3147 | However, it might be correct. */ | |
4c3721d5 ILT |
3148 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) |
3149 | return false; | |
3150 | *pneeded = true; | |
3151 | return true; | |
3152 | } | |
3153 | ||
9b39ed6b | 3154 | if (type == (N_UNDF | N_EXT)) |
4c3721d5 ILT |
3155 | { |
3156 | bfd_vma value; | |
3157 | ||
3158 | value = GET_WORD (abfd, p->e_value); | |
3159 | if (value != 0) | |
3160 | { | |
3161 | /* This symbol is common in the object from the archive | |
3162 | file. */ | |
3163 | if (h->type == bfd_link_hash_undefined) | |
3164 | { | |
3165 | bfd *symbfd; | |
e1f99f60 | 3166 | unsigned int power; |
4c3721d5 ILT |
3167 | |
3168 | symbfd = h->u.undef.abfd; | |
3169 | if (symbfd == (bfd *) NULL) | |
3170 | { | |
3171 | /* This symbol was created as undefined from | |
3172 | outside BFD. We assume that we should link | |
3173 | in the object file. This is done for the -u | |
3174 | option in the linker. */ | |
3175 | if (! (*info->callbacks->add_archive_element) (info, | |
3176 | abfd, | |
3177 | name)) | |
3178 | return false; | |
3179 | *pneeded = true; | |
3180 | return true; | |
3181 | } | |
3182 | /* Turn the current link symbol into a common | |
3183 | symbol. It is already on the undefs list. */ | |
3184 | h->type = bfd_link_hash_common; | |
773033d2 ILT |
3185 | h->u.c.p = ((struct bfd_link_hash_common_entry *) |
3186 | bfd_hash_allocate (&info->hash->table, | |
3187 | sizeof (struct bfd_link_hash_common_entry))); | |
3188 | if (h->u.c.p == NULL) | |
3189 | return false; | |
3190 | ||
4c3721d5 | 3191 | h->u.c.size = value; |
e1f99f60 ILT |
3192 | |
3193 | /* FIXME: This isn't quite right. The maximum | |
3194 | alignment of a common symbol should be set by the | |
3195 | architecture of the output file, not of the input | |
3196 | file. */ | |
3197 | power = bfd_log2 (value); | |
3198 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
3199 | power = bfd_get_arch_info (abfd)->section_align_power; | |
773033d2 | 3200 | h->u.c.p->alignment_power = power; |
e1f99f60 | 3201 | |
773033d2 ILT |
3202 | h->u.c.p->section = bfd_make_section_old_way (symbfd, |
3203 | "COMMON"); | |
4c3721d5 ILT |
3204 | } |
3205 | else | |
3206 | { | |
3207 | /* Adjust the size of the common symbol if | |
3208 | necessary. */ | |
3209 | if (value > h->u.c.size) | |
3210 | h->u.c.size = value; | |
3211 | } | |
3212 | } | |
3213 | } | |
4298e311 ILT |
3214 | |
3215 | if (type == N_WEAKA | |
3216 | || type == N_WEAKT | |
3217 | || type == N_WEAKD | |
3218 | || type == N_WEAKB) | |
3219 | { | |
3220 | /* This symbol is weak but defined. We must pull it in if | |
3221 | the current link symbol is undefined, but we don't want | |
3222 | it if the current link symbol is common. */ | |
3223 | if (h->type == bfd_link_hash_undefined) | |
3224 | { | |
3225 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) | |
3226 | return false; | |
3227 | *pneeded = true; | |
3228 | return true; | |
3229 | } | |
3230 | } | |
4c3721d5 ILT |
3231 | } |
3232 | ||
3233 | /* We do not need this object file. */ | |
3234 | return true; | |
3235 | } | |
3236 | ||
3237 | /* Add all symbols from an object file to the hash table. */ | |
3238 | ||
3239 | static boolean | |
3240 | aout_link_add_symbols (abfd, info) | |
3241 | bfd *abfd; | |
3242 | struct bfd_link_info *info; | |
3243 | { | |
e85e8bfe ILT |
3244 | boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *, |
3245 | const char *, flagword, asection *, | |
3246 | bfd_vma, const char *, boolean, | |
3247 | boolean, | |
3248 | struct bfd_link_hash_entry **)); | |
396aaeb2 | 3249 | struct external_nlist *syms; |
4c3721d5 ILT |
3250 | bfd_size_type sym_count; |
3251 | char *strings; | |
3252 | boolean copy; | |
3253 | struct aout_link_hash_entry **sym_hash; | |
3254 | register struct external_nlist *p; | |
3255 | struct external_nlist *pend; | |
3256 | ||
396aaeb2 | 3257 | syms = obj_aout_external_syms (abfd); |
4c3721d5 ILT |
3258 | sym_count = obj_aout_external_sym_count (abfd); |
3259 | strings = obj_aout_external_strings (abfd); | |
3260 | if (info->keep_memory) | |
3261 | copy = false; | |
3262 | else | |
3263 | copy = true; | |
3264 | ||
f1b45745 | 3265 | if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) |
396aaeb2 ILT |
3266 | { |
3267 | if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) | |
3268 | (abfd, info, &syms, &sym_count, &strings))) | |
3269 | return false; | |
3270 | } | |
3271 | ||
4c3721d5 ILT |
3272 | /* We keep a list of the linker hash table entries that correspond |
3273 | to particular symbols. We could just look them up in the hash | |
3274 | table, but keeping the list is more efficient. Perhaps this | |
3275 | should be conditional on info->keep_memory. */ | |
3276 | sym_hash = ((struct aout_link_hash_entry **) | |
3277 | bfd_alloc (abfd, | |
3278 | ((size_t) sym_count | |
3279 | * sizeof (struct aout_link_hash_entry *)))); | |
e85e8bfe | 3280 | if (sym_hash == NULL && sym_count != 0) |
a9713b91 | 3281 | return false; |
4c3721d5 ILT |
3282 | obj_aout_sym_hashes (abfd) = sym_hash; |
3283 | ||
e85e8bfe ILT |
3284 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; |
3285 | if (add_one_symbol == NULL) | |
3286 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
3287 | ||
396aaeb2 | 3288 | p = syms; |
4c3721d5 ILT |
3289 | pend = p + sym_count; |
3290 | for (; p < pend; p++, sym_hash++) | |
3291 | { | |
3292 | int type; | |
3293 | const char *name; | |
3294 | bfd_vma value; | |
3295 | asection *section; | |
3296 | flagword flags; | |
3297 | const char *string; | |
3298 | ||
3299 | *sym_hash = NULL; | |
3300 | ||
3301 | type = bfd_h_get_8 (abfd, p->e_type); | |
3302 | ||
3303 | /* Ignore debugging symbols. */ | |
3304 | if ((type & N_STAB) != 0) | |
3305 | continue; | |
3306 | ||
4c3721d5 ILT |
3307 | name = strings + GET_WORD (abfd, p->e_strx); |
3308 | value = GET_WORD (abfd, p->e_value); | |
3309 | flags = BSF_GLOBAL; | |
3310 | string = NULL; | |
3311 | switch (type) | |
3312 | { | |
3313 | default: | |
3314 | abort (); | |
4298e311 ILT |
3315 | |
3316 | case N_UNDF: | |
3317 | case N_ABS: | |
3318 | case N_TEXT: | |
3319 | case N_DATA: | |
3320 | case N_BSS: | |
3321 | case N_FN_SEQ: | |
3322 | case N_COMM: | |
3323 | case N_SETV: | |
3324 | case N_FN: | |
3325 | /* Ignore symbols that are not externally visible. */ | |
3326 | continue; | |
3327 | case N_INDR: | |
3328 | /* Ignore local indirect symbol. */ | |
3329 | ++p; | |
3330 | ++sym_hash; | |
3331 | continue; | |
3332 | ||
4c3721d5 | 3333 | case N_UNDF | N_EXT: |
4298e311 ILT |
3334 | if (value == 0) |
3335 | { | |
4587b578 | 3336 | section = bfd_und_section_ptr; |
4298e311 ILT |
3337 | flags = 0; |
3338 | } | |
4c3721d5 | 3339 | else |
4587b578 | 3340 | section = bfd_com_section_ptr; |
4c3721d5 ILT |
3341 | break; |
3342 | case N_ABS | N_EXT: | |
4587b578 | 3343 | section = bfd_abs_section_ptr; |
4c3721d5 ILT |
3344 | break; |
3345 | case N_TEXT | N_EXT: | |
3346 | section = obj_textsec (abfd); | |
3347 | value -= bfd_get_section_vma (abfd, section); | |
3348 | break; | |
3349 | case N_DATA | N_EXT: | |
2cd086e3 ILT |
3350 | case N_SETV | N_EXT: |
3351 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
3352 | translate_from_native_sym_flags. */ | |
4c3721d5 ILT |
3353 | section = obj_datasec (abfd); |
3354 | value -= bfd_get_section_vma (abfd, section); | |
3355 | break; | |
3356 | case N_BSS | N_EXT: | |
3357 | section = obj_bsssec (abfd); | |
3358 | value -= bfd_get_section_vma (abfd, section); | |
3359 | break; | |
3360 | case N_INDR | N_EXT: | |
3361 | /* An indirect symbol. The next symbol is the symbol | |
3362 | which this one really is. */ | |
3363 | BFD_ASSERT (p + 1 < pend); | |
3364 | ++p; | |
3365 | string = strings + GET_WORD (abfd, p->e_strx); | |
4587b578 | 3366 | section = bfd_ind_section_ptr; |
4c3721d5 ILT |
3367 | flags |= BSF_INDIRECT; |
3368 | break; | |
3369 | case N_COMM | N_EXT: | |
4587b578 | 3370 | section = bfd_com_section_ptr; |
4c3721d5 | 3371 | break; |
964affdc | 3372 | case N_SETA: case N_SETA | N_EXT: |
4587b578 | 3373 | section = bfd_abs_section_ptr; |
4c3721d5 ILT |
3374 | flags |= BSF_CONSTRUCTOR; |
3375 | break; | |
964affdc | 3376 | case N_SETT: case N_SETT | N_EXT: |
4c3721d5 ILT |
3377 | section = obj_textsec (abfd); |
3378 | flags |= BSF_CONSTRUCTOR; | |
3379 | value -= bfd_get_section_vma (abfd, section); | |
3380 | break; | |
964affdc | 3381 | case N_SETD: case N_SETD | N_EXT: |
4c3721d5 ILT |
3382 | section = obj_datasec (abfd); |
3383 | flags |= BSF_CONSTRUCTOR; | |
3384 | value -= bfd_get_section_vma (abfd, section); | |
3385 | break; | |
964affdc | 3386 | case N_SETB: case N_SETB | N_EXT: |
4c3721d5 ILT |
3387 | section = obj_bsssec (abfd); |
3388 | flags |= BSF_CONSTRUCTOR; | |
3389 | value -= bfd_get_section_vma (abfd, section); | |
3390 | break; | |
3391 | case N_WARNING: | |
3392 | /* A warning symbol. The next symbol is the one to warn | |
3393 | about. */ | |
3394 | BFD_ASSERT (p + 1 < pend); | |
3395 | ++p; | |
3396 | string = name; | |
3397 | name = strings + GET_WORD (abfd, p->e_strx); | |
4587b578 | 3398 | section = bfd_und_section_ptr; |
4c3721d5 ILT |
3399 | flags |= BSF_WARNING; |
3400 | break; | |
4298e311 | 3401 | case N_WEAKU: |
4587b578 | 3402 | section = bfd_und_section_ptr; |
4298e311 ILT |
3403 | flags = BSF_WEAK; |
3404 | break; | |
3405 | case N_WEAKA: | |
4587b578 | 3406 | section = bfd_abs_section_ptr; |
4298e311 ILT |
3407 | flags = BSF_WEAK; |
3408 | break; | |
3409 | case N_WEAKT: | |
3410 | section = obj_textsec (abfd); | |
3411 | value -= bfd_get_section_vma (abfd, section); | |
3412 | flags = BSF_WEAK; | |
3413 | break; | |
3414 | case N_WEAKD: | |
3415 | section = obj_datasec (abfd); | |
3416 | value -= bfd_get_section_vma (abfd, section); | |
3417 | flags = BSF_WEAK; | |
3418 | break; | |
3419 | case N_WEAKB: | |
3420 | section = obj_bsssec (abfd); | |
3421 | value -= bfd_get_section_vma (abfd, section); | |
3422 | flags = BSF_WEAK; | |
3423 | break; | |
4c3721d5 ILT |
3424 | } |
3425 | ||
e85e8bfe | 3426 | if (! ((*add_one_symbol) |
e68de5d5 | 3427 | (info, abfd, name, flags, section, value, string, copy, false, |
ec099b4b | 3428 | (struct bfd_link_hash_entry **) sym_hash))) |
4c3721d5 | 3429 | return false; |
53155af1 | 3430 | |
e1f99f60 ILT |
3431 | /* Restrict the maximum alignment of a common symbol based on |
3432 | the architecture, since a.out has no way to represent | |
3433 | alignment requirements of a section in a .o file. FIXME: | |
3434 | This isn't quite right: it should use the architecture of the | |
3435 | output file, not the input files. */ | |
3436 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
773033d2 | 3437 | && ((*sym_hash)->root.u.c.p->alignment_power > |
e1f99f60 | 3438 | bfd_get_arch_info (abfd)->section_align_power)) |
773033d2 | 3439 | (*sym_hash)->root.u.c.p->alignment_power = |
e1f99f60 ILT |
3440 | bfd_get_arch_info (abfd)->section_align_power; |
3441 | ||
f4945271 ILT |
3442 | /* If this is a set symbol, and we are not building sets, then |
3443 | it is possible for the hash entry to not have been set. In | |
3444 | such a case, treat the symbol as not globally defined. */ | |
3445 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
3446 | { | |
3447 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
3448 | *sym_hash = NULL; | |
3449 | } | |
3450 | ||
53155af1 ILT |
3451 | if (type == (N_INDR | N_EXT) || type == N_WARNING) |
3452 | ++sym_hash; | |
4c3721d5 ILT |
3453 | } |
3454 | ||
3455 | return true; | |
3456 | } | |
14dc2f77 ILT |
3457 | \f |
3458 | /* A hash table used for header files with N_BINCL entries. */ | |
3459 | ||
3460 | struct aout_link_includes_table | |
3461 | { | |
3462 | struct bfd_hash_table root; | |
3463 | }; | |
3464 | ||
3465 | /* A linked list of totals that we have found for a particular header | |
3466 | file. */ | |
3467 | ||
3468 | struct aout_link_includes_totals | |
3469 | { | |
3470 | struct aout_link_includes_totals *next; | |
3471 | bfd_vma total; | |
3472 | }; | |
3473 | ||
3474 | /* An entry in the header file hash table. */ | |
3475 | ||
3476 | struct aout_link_includes_entry | |
3477 | { | |
3478 | struct bfd_hash_entry root; | |
3479 | /* List of totals we have found for this file. */ | |
3480 | struct aout_link_includes_totals *totals; | |
3481 | }; | |
3482 | ||
3483 | /* Look up an entry in an the header file hash table. */ | |
3484 | ||
3485 | #define aout_link_includes_lookup(table, string, create, copy) \ | |
3486 | ((struct aout_link_includes_entry *) \ | |
3487 | bfd_hash_lookup (&(table)->root, (string), (create), (copy))) | |
4c3721d5 ILT |
3488 | |
3489 | /* During the final link step we need to pass around a bunch of | |
3490 | information, so we do it in an instance of this structure. */ | |
3491 | ||
3492 | struct aout_final_link_info | |
3493 | { | |
3494 | /* General link information. */ | |
3495 | struct bfd_link_info *info; | |
3496 | /* Output bfd. */ | |
3497 | bfd *output_bfd; | |
3498 | /* Reloc file positions. */ | |
3499 | file_ptr treloff, dreloff; | |
3500 | /* File position of symbols. */ | |
3501 | file_ptr symoff; | |
3502 | /* String table. */ | |
1afd2380 | 3503 | struct bfd_strtab_hash *strtab; |
14dc2f77 ILT |
3504 | /* Header file hash table. */ |
3505 | struct aout_link_includes_table includes; | |
1afd2380 ILT |
3506 | /* A buffer large enough to hold the contents of any section. */ |
3507 | bfd_byte *contents; | |
3508 | /* A buffer large enough to hold the relocs of any section. */ | |
3509 | PTR relocs; | |
3510 | /* A buffer large enough to hold the symbol map of any input BFD. */ | |
3511 | int *symbol_map; | |
3512 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
3513 | struct external_nlist *output_syms; | |
4c3721d5 ILT |
3514 | }; |
3515 | ||
14dc2f77 ILT |
3516 | static struct bfd_hash_entry *aout_link_includes_newfunc |
3517 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
4c3721d5 ILT |
3518 | static boolean aout_link_input_bfd |
3519 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); | |
3520 | static boolean aout_link_write_symbols | |
1afd2380 | 3521 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); |
4c3721d5 ILT |
3522 | static boolean aout_link_write_other_symbol |
3523 | PARAMS ((struct aout_link_hash_entry *, PTR)); | |
3524 | static boolean aout_link_input_section | |
3525 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, | |
3526 | asection *input_section, file_ptr *reloff_ptr, | |
1afd2380 | 3527 | bfd_size_type rel_size)); |
4c3721d5 ILT |
3528 | static boolean aout_link_input_section_std |
3529 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, | |
3530 | asection *input_section, struct reloc_std_external *, | |
1afd2380 | 3531 | bfd_size_type rel_size, bfd_byte *contents)); |
4c3721d5 ILT |
3532 | static boolean aout_link_input_section_ext |
3533 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, | |
3534 | asection *input_section, struct reloc_ext_external *, | |
1afd2380 | 3535 | bfd_size_type rel_size, bfd_byte *contents)); |
4c3721d5 ILT |
3536 | static INLINE asection *aout_reloc_index_to_section |
3537 | PARAMS ((bfd *, int)); | |
ec099b4b ILT |
3538 | static boolean aout_link_reloc_link_order |
3539 | PARAMS ((struct aout_final_link_info *, asection *, | |
3540 | struct bfd_link_order *)); | |
4c3721d5 | 3541 | |
14dc2f77 ILT |
3542 | /* The function to create a new entry in the header file hash table. */ |
3543 | ||
3544 | static struct bfd_hash_entry * | |
3545 | aout_link_includes_newfunc (entry, table, string) | |
3546 | struct bfd_hash_entry *entry; | |
3547 | struct bfd_hash_table *table; | |
3548 | const char *string; | |
3549 | { | |
3550 | struct aout_link_includes_entry *ret = | |
3551 | (struct aout_link_includes_entry *) entry; | |
3552 | ||
3553 | /* Allocate the structure if it has not already been allocated by a | |
3554 | subclass. */ | |
3555 | if (ret == (struct aout_link_includes_entry *) NULL) | |
3556 | ret = ((struct aout_link_includes_entry *) | |
3557 | bfd_hash_allocate (table, | |
3558 | sizeof (struct aout_link_includes_entry))); | |
3559 | if (ret == (struct aout_link_includes_entry *) NULL) | |
3560 | return (struct bfd_hash_entry *) ret; | |
3561 | ||
3562 | /* Call the allocation method of the superclass. */ | |
3563 | ret = ((struct aout_link_includes_entry *) | |
3564 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); | |
3565 | if (ret) | |
3566 | { | |
3567 | /* Set local fields. */ | |
3568 | ret->totals = NULL; | |
3569 | } | |
3570 | ||
3571 | return (struct bfd_hash_entry *) ret; | |
3572 | } | |
3573 | ||
4c3721d5 ILT |
3574 | /* Do the final link step. This is called on the output BFD. The |
3575 | INFO structure should point to a list of BFDs linked through the | |
3576 | link_next field which can be used to find each BFD which takes part | |
3577 | in the output. Also, each section in ABFD should point to a list | |
3578 | of bfd_link_order structures which list all the input sections for | |
3579 | the output section. */ | |
3580 | ||
3581 | boolean | |
3582 | NAME(aout,final_link) (abfd, info, callback) | |
3583 | bfd *abfd; | |
3584 | struct bfd_link_info *info; | |
3585 | void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *)); | |
3586 | { | |
3587 | struct aout_final_link_info aout_info; | |
14dc2f77 | 3588 | boolean includes_hash_initialized = false; |
4c3721d5 | 3589 | register bfd *sub; |
1afd2380 ILT |
3590 | bfd_size_type trsize, drsize; |
3591 | size_t max_contents_size; | |
3592 | size_t max_relocs_size; | |
3593 | size_t max_sym_count; | |
4c3721d5 ILT |
3594 | bfd_size_type text_size; |
3595 | file_ptr text_end; | |
3596 | register struct bfd_link_order *p; | |
3597 | asection *o; | |
ec099b4b | 3598 | boolean have_link_order_relocs; |
4c3721d5 | 3599 | |
ae115e51 ILT |
3600 | if (info->shared) |
3601 | abfd->flags |= DYNAMIC; | |
3602 | ||
4c3721d5 ILT |
3603 | aout_info.info = info; |
3604 | aout_info.output_bfd = abfd; | |
1afd2380 ILT |
3605 | aout_info.contents = NULL; |
3606 | aout_info.relocs = NULL; | |
14dc2f77 ILT |
3607 | aout_info.symbol_map = NULL; |
3608 | aout_info.output_syms = NULL; | |
3609 | ||
3610 | if (! bfd_hash_table_init_n (&aout_info.includes.root, | |
3611 | aout_link_includes_newfunc, | |
3612 | 251)) | |
3613 | goto error_return; | |
3614 | includes_hash_initialized = true; | |
1afd2380 ILT |
3615 | |
3616 | /* Figure out the largest section size. Also, if generating | |
3617 | relocateable output, count the relocs. */ | |
3618 | trsize = 0; | |
3619 | drsize = 0; | |
3620 | max_contents_size = 0; | |
3621 | max_relocs_size = 0; | |
3622 | max_sym_count = 0; | |
3623 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
4c3721d5 | 3624 | { |
1afd2380 | 3625 | size_t sz; |
4c3721d5 | 3626 | |
1afd2380 | 3627 | if (info->relocateable) |
4c3721d5 | 3628 | { |
6c8fa8e6 | 3629 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
4c3721d5 ILT |
3630 | { |
3631 | trsize += exec_hdr (sub)->a_trsize; | |
3632 | drsize += exec_hdr (sub)->a_drsize; | |
3633 | } | |
3634 | else | |
3635 | { | |
3636 | /* FIXME: We need to identify the .text and .data sections | |
3637 | and call get_reloc_upper_bound and canonicalize_reloc to | |
3638 | work out the number of relocs needed, and then multiply | |
3639 | by the reloc size. */ | |
a9713b91 ILT |
3640 | (*_bfd_error_handler) |
3641 | ("%s: relocateable link from %s to %s not supported", | |
3642 | bfd_get_filename (abfd), | |
3643 | sub->xvec->name, abfd->xvec->name); | |
3644 | bfd_set_error (bfd_error_invalid_operation); | |
3645 | goto error_return; | |
4c3721d5 ILT |
3646 | } |
3647 | } | |
1afd2380 | 3648 | |
204ba9e3 ILT |
3649 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
3650 | { | |
3651 | sz = bfd_section_size (sub, obj_textsec (sub)); | |
3652 | if (sz > max_contents_size) | |
3653 | max_contents_size = sz; | |
3654 | sz = bfd_section_size (sub, obj_datasec (sub)); | |
3655 | if (sz > max_contents_size) | |
3656 | max_contents_size = sz; | |
3657 | ||
3658 | sz = exec_hdr (sub)->a_trsize; | |
3659 | if (sz > max_relocs_size) | |
3660 | max_relocs_size = sz; | |
3661 | sz = exec_hdr (sub)->a_drsize; | |
3662 | if (sz > max_relocs_size) | |
3663 | max_relocs_size = sz; | |
3664 | ||
3665 | sz = obj_aout_external_sym_count (sub); | |
3666 | if (sz > max_sym_count) | |
3667 | max_sym_count = sz; | |
3668 | } | |
1afd2380 ILT |
3669 | } |
3670 | ||
3671 | if (info->relocateable) | |
3672 | { | |
ec6b18c4 ILT |
3673 | if (obj_textsec (abfd) != (asection *) NULL) |
3674 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
3675 | ->link_order_head) | |
3676 | * obj_reloc_entry_size (abfd)); | |
ec6b18c4 ILT |
3677 | if (obj_datasec (abfd) != (asection *) NULL) |
3678 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
3679 | ->link_order_head) | |
3680 | * obj_reloc_entry_size (abfd)); | |
4c3721d5 ILT |
3681 | } |
3682 | ||
1afd2380 ILT |
3683 | exec_hdr (abfd)->a_trsize = trsize; |
3684 | exec_hdr (abfd)->a_drsize = drsize; | |
3685 | ||
964affdc DM |
3686 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); |
3687 | ||
4c3721d5 ILT |
3688 | /* Adjust the section sizes and vmas according to the magic number. |
3689 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
3690 | filepos for each section. */ | |
3691 | if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) | |
1afd2380 | 3692 | goto error_return; |
4c3721d5 ILT |
3693 | |
3694 | /* The relocation and symbol file positions differ among a.out | |
3695 | targets. We are passed a callback routine from the backend | |
3696 | specific code to handle this. | |
3697 | FIXME: At this point we do not know how much space the symbol | |
3698 | table will require. This will not work for any (nonstandard) | |
3699 | a.out target that needs to know the symbol table size before it | |
3700 | can compute the relocation file positions. This may or may not | |
3701 | be the case for the hp300hpux target, for example. */ | |
3702 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, | |
3703 | &aout_info.symoff); | |
3704 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
3705 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
3706 | obj_sym_filepos (abfd) = aout_info.symoff; | |
3707 | ||
3708 | /* We keep a count of the symbols as we output them. */ | |
3709 | obj_aout_external_sym_count (abfd) = 0; | |
3710 | ||
3711 | /* We accumulate the string table as we write out the symbols. */ | |
1afd2380 ILT |
3712 | aout_info.strtab = _bfd_stringtab_init (); |
3713 | if (aout_info.strtab == NULL) | |
3714 | goto error_return; | |
3715 | ||
3716 | /* Allocate buffers to hold section contents and relocs. */ | |
58142f10 ILT |
3717 | aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size); |
3718 | aout_info.relocs = (PTR) bfd_malloc (max_relocs_size); | |
3719 | aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int *)); | |
1afd2380 | 3720 | aout_info.output_syms = ((struct external_nlist *) |
58142f10 ILT |
3721 | bfd_malloc ((max_sym_count + 1) |
3722 | * sizeof (struct external_nlist))); | |
1afd2380 ILT |
3723 | if ((aout_info.contents == NULL && max_contents_size != 0) |
3724 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
3725 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
3726 | || aout_info.output_syms == NULL) | |
58142f10 | 3727 | goto error_return; |
4c3721d5 | 3728 | |
34e9ffbc NH |
3729 | /* If we have a symbol named __DYNAMIC, force it out now. This is |
3730 | required by SunOS. Doing this here rather than in sunos.c is a | |
3731 | hack, but it's easier than exporting everything which would be | |
3732 | needed. */ | |
3733 | { | |
3734 | struct aout_link_hash_entry *h; | |
3735 | ||
3736 | h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", | |
3737 | false, false, false); | |
3738 | if (h != NULL) | |
3739 | aout_link_write_other_symbol (h, &aout_info); | |
3740 | } | |
3741 | ||
4c3721d5 ILT |
3742 | /* The most time efficient way to do the link would be to read all |
3743 | the input object files into memory and then sort out the | |
3744 | information into the output file. Unfortunately, that will | |
3745 | probably use too much memory. Another method would be to step | |
3746 | through everything that composes the text section and write it | |
3747 | out, and then everything that composes the data section and write | |
3748 | it out, and then write out the relocs, and then write out the | |
3749 | symbols. Unfortunately, that requires reading stuff from each | |
3750 | input file several times, and we will not be able to keep all the | |
3751 | input files open simultaneously, and reopening them will be slow. | |
3752 | ||
3753 | What we do is basically process one input file at a time. We do | |
3754 | everything we need to do with an input file once--copy over the | |
3755 | section contents, handle the relocation information, and write | |
3756 | out the symbols--and then we throw away the information we read | |
3757 | from it. This approach requires a lot of lseeks of the output | |
3758 | file, which is unfortunate but still faster than reopening a lot | |
3759 | of files. | |
3760 | ||
3761 | We use the output_has_begun field of the input BFDs to see | |
3762 | whether we have already handled it. */ | |
3763 | for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next) | |
3764 | sub->output_has_begun = false; | |
3765 | ||
7ec49f91 ILT |
3766 | /* Mark all sections which are to be included in the link. This |
3767 | will normally be every section. We need to do this so that we | |
3768 | can identify any sections which the linker has decided to not | |
3769 | include. */ | |
3770 | for (o = abfd->sections; o != NULL; o = o->next) | |
3771 | { | |
3772 | for (p = o->link_order_head; p != NULL; p = p->next) | |
3773 | { | |
3774 | if (p->type == bfd_indirect_link_order) | |
ff0e4a93 | 3775 | p->u.indirect.section->linker_mark = true; |
7ec49f91 ILT |
3776 | } |
3777 | } | |
3778 | ||
ec099b4b | 3779 | have_link_order_relocs = false; |
4c3721d5 ILT |
3780 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
3781 | { | |
4c3721d5 ILT |
3782 | for (p = o->link_order_head; |
3783 | p != (struct bfd_link_order *) NULL; | |
3784 | p = p->next) | |
3785 | { | |
e68de5d5 ILT |
3786 | if (p->type == bfd_indirect_link_order |
3787 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
3788 | == bfd_target_aout_flavour)) | |
4c3721d5 | 3789 | { |
e68de5d5 ILT |
3790 | bfd *input_bfd; |
3791 | ||
4c3721d5 | 3792 | input_bfd = p->u.indirect.section->owner; |
e68de5d5 | 3793 | if (! input_bfd->output_has_begun) |
4c3721d5 | 3794 | { |
e68de5d5 | 3795 | if (! aout_link_input_bfd (&aout_info, input_bfd)) |
1afd2380 | 3796 | goto error_return; |
e68de5d5 | 3797 | input_bfd->output_has_begun = true; |
4c3721d5 | 3798 | } |
e68de5d5 | 3799 | } |
ec099b4b ILT |
3800 | else if (p->type == bfd_section_reloc_link_order |
3801 | || p->type == bfd_symbol_reloc_link_order) | |
3802 | { | |
3803 | /* These are handled below. */ | |
3804 | have_link_order_relocs = true; | |
3805 | } | |
e68de5d5 ILT |
3806 | else |
3807 | { | |
4c3721d5 | 3808 | if (! _bfd_default_link_order (abfd, info, o, p)) |
1afd2380 | 3809 | goto error_return; |
4c3721d5 ILT |
3810 | } |
3811 | } | |
3812 | } | |
3813 | ||
3814 | /* Write out any symbols that we have not already written out. */ | |
3815 | aout_link_hash_traverse (aout_hash_table (info), | |
3816 | aout_link_write_other_symbol, | |
3817 | (PTR) &aout_info); | |
3818 | ||
ec099b4b ILT |
3819 | /* Now handle any relocs we were asked to create by the linker. |
3820 | These did not come from any input file. We must do these after | |
3821 | we have written out all the symbols, so that we know the symbol | |
3822 | indices to use. */ | |
3823 | if (have_link_order_relocs) | |
3824 | { | |
3825 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
3826 | { | |
3827 | for (p = o->link_order_head; | |
3828 | p != (struct bfd_link_order *) NULL; | |
3829 | p = p->next) | |
3830 | { | |
3831 | if (p->type == bfd_section_reloc_link_order | |
3832 | || p->type == bfd_symbol_reloc_link_order) | |
3833 | { | |
3834 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
1afd2380 | 3835 | goto error_return; |
ec099b4b ILT |
3836 | } |
3837 | } | |
3838 | } | |
3839 | } | |
3840 | ||
1afd2380 ILT |
3841 | if (aout_info.contents != NULL) |
3842 | { | |
3843 | free (aout_info.contents); | |
3844 | aout_info.contents = NULL; | |
3845 | } | |
3846 | if (aout_info.relocs != NULL) | |
3847 | { | |
3848 | free (aout_info.relocs); | |
3849 | aout_info.relocs = NULL; | |
3850 | } | |
3851 | if (aout_info.symbol_map != NULL) | |
3852 | { | |
3853 | free (aout_info.symbol_map); | |
3854 | aout_info.symbol_map = NULL; | |
3855 | } | |
3856 | if (aout_info.output_syms != NULL) | |
3857 | { | |
3858 | free (aout_info.output_syms); | |
3859 | aout_info.output_syms = NULL; | |
3860 | } | |
14dc2f77 ILT |
3861 | if (includes_hash_initialized) |
3862 | { | |
3863 | bfd_hash_table_free (&aout_info.includes.root); | |
3864 | includes_hash_initialized = false; | |
3865 | } | |
1afd2380 | 3866 | |
e85e8bfe ILT |
3867 | /* Finish up any dynamic linking we may be doing. */ |
3868 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
3869 | { | |
3870 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
1afd2380 | 3871 | goto error_return; |
e85e8bfe ILT |
3872 | } |
3873 | ||
4c3721d5 ILT |
3874 | /* Update the header information. */ |
3875 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
3876 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
3877 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
3878 | obj_textsec (abfd)->reloc_count = | |
3879 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
3880 | obj_datasec (abfd)->reloc_count = | |
3881 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
3882 | ||
6ccdc203 ILT |
3883 | /* Write out the string table, unless there are no symbols. */ |
3884 | if (abfd->symcount > 0) | |
3885 | { | |
3886 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
3887 | || ! emit_stringtab (abfd, aout_info.strtab)) | |
3888 | goto error_return; | |
3889 | } | |
3890 | ||
3891 | return true; | |
1afd2380 ILT |
3892 | |
3893 | error_return: | |
3894 | if (aout_info.contents != NULL) | |
3895 | free (aout_info.contents); | |
3896 | if (aout_info.relocs != NULL) | |
3897 | free (aout_info.relocs); | |
3898 | if (aout_info.symbol_map != NULL) | |
3899 | free (aout_info.symbol_map); | |
3900 | if (aout_info.output_syms != NULL) | |
3901 | free (aout_info.output_syms); | |
14dc2f77 ILT |
3902 | if (includes_hash_initialized) |
3903 | bfd_hash_table_free (&aout_info.includes.root); | |
1afd2380 | 3904 | return false; |
4c3721d5 ILT |
3905 | } |
3906 | ||
3907 | /* Link an a.out input BFD into the output file. */ | |
3908 | ||
3909 | static boolean | |
3910 | aout_link_input_bfd (finfo, input_bfd) | |
3911 | struct aout_final_link_info *finfo; | |
3912 | bfd *input_bfd; | |
3913 | { | |
3914 | bfd_size_type sym_count; | |
4c3721d5 ILT |
3915 | |
3916 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); | |
3917 | ||
e85e8bfe ILT |
3918 | /* If this is a dynamic object, it may need special handling. */ |
3919 | if ((input_bfd->flags & DYNAMIC) != 0 | |
3920 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
3921 | { | |
3922 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
3923 | (finfo->info, input_bfd)); | |
3924 | } | |
3925 | ||
4c3721d5 ILT |
3926 | /* Get the symbols. We probably have them already, unless |
3927 | finfo->info->keep_memory is false. */ | |
5c8444f8 | 3928 | if (! aout_get_external_symbols (input_bfd)) |
4c3721d5 ILT |
3929 | return false; |
3930 | ||
3931 | sym_count = obj_aout_external_sym_count (input_bfd); | |
4c3721d5 | 3932 | |
1afd2380 ILT |
3933 | /* Write out the symbols and get a map of the new indices. The map |
3934 | is placed into finfo->symbol_map. */ | |
3935 | if (! aout_link_write_symbols (finfo, input_bfd)) | |
3936 | return false; | |
4c3721d5 | 3937 | |
1afd2380 | 3938 | /* Relocate and write out the sections. These functions use the |
ff0e4a93 ILT |
3939 | symbol map created by aout_link_write_symbols. The linker_mark |
3940 | field will be set if these sections are to be included in the | |
3941 | link, which will normally be the case. */ | |
3942 | if (obj_textsec (input_bfd)->linker_mark) | |
7ec49f91 ILT |
3943 | { |
3944 | if (! aout_link_input_section (finfo, input_bfd, | |
3945 | obj_textsec (input_bfd), | |
3946 | &finfo->treloff, | |
3947 | exec_hdr (input_bfd)->a_trsize)) | |
3948 | return false; | |
3949 | } | |
ff0e4a93 | 3950 | if (obj_datasec (input_bfd)->linker_mark) |
7ec49f91 ILT |
3951 | { |
3952 | if (! aout_link_input_section (finfo, input_bfd, | |
3953 | obj_datasec (input_bfd), | |
3954 | &finfo->dreloff, | |
3955 | exec_hdr (input_bfd)->a_drsize)) | |
3956 | return false; | |
3957 | } | |
4c3721d5 ILT |
3958 | |
3959 | /* If we are not keeping memory, we don't need the symbols any | |
3960 | longer. We still need them if we are keeping memory, because the | |
3961 | strings in the hash table point into them. */ | |
3962 | if (! finfo->info->keep_memory) | |
3963 | { | |
3964 | if (! aout_link_free_symbols (input_bfd)) | |
1afd2380 | 3965 | return false; |
4c3721d5 ILT |
3966 | } |
3967 | ||
3968 | return true; | |
3969 | } | |
3970 | ||
3971 | /* Adjust and write out the symbols for an a.out file. Set the new | |
3972 | symbol indices into a symbol_map. */ | |
3973 | ||
3974 | static boolean | |
1afd2380 | 3975 | aout_link_write_symbols (finfo, input_bfd) |
4c3721d5 ILT |
3976 | struct aout_final_link_info *finfo; |
3977 | bfd *input_bfd; | |
4c3721d5 ILT |
3978 | { |
3979 | bfd *output_bfd; | |
3980 | bfd_size_type sym_count; | |
3981 | char *strings; | |
3982 | enum bfd_link_strip strip; | |
3983 | enum bfd_link_discard discard; | |
4c3721d5 | 3984 | struct external_nlist *outsym; |
d17fc4c9 | 3985 | bfd_size_type strtab_index; |
4c3721d5 ILT |
3986 | register struct external_nlist *sym; |
3987 | struct external_nlist *sym_end; | |
3988 | struct aout_link_hash_entry **sym_hash; | |
1afd2380 | 3989 | int *symbol_map; |
4c3721d5 | 3990 | boolean pass; |
ab0434c2 | 3991 | boolean skip_next; |
4c3721d5 ILT |
3992 | |
3993 | output_bfd = finfo->output_bfd; | |
3994 | sym_count = obj_aout_external_sym_count (input_bfd); | |
3995 | strings = obj_aout_external_strings (input_bfd); | |
3996 | strip = finfo->info->strip; | |
3997 | discard = finfo->info->discard; | |
1afd2380 | 3998 | outsym = finfo->output_syms; |
4c3721d5 ILT |
3999 | |
4000 | /* First write out a symbol for this object file, unless we are | |
4001 | discarding such symbols. */ | |
4002 | if (strip != strip_all | |
4003 | && (strip != strip_some | |
4004 | || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename, | |
4005 | false, false) != NULL) | |
4006 | && discard != discard_all) | |
4007 | { | |
4008 | bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type); | |
4009 | bfd_h_put_8 (output_bfd, 0, outsym->e_other); | |
4010 | bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc); | |
1afd2380 | 4011 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, |
d17fc4c9 ILT |
4012 | input_bfd->filename, false); |
4013 | if (strtab_index == (bfd_size_type) -1) | |
1afd2380 | 4014 | return false; |
d17fc4c9 | 4015 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); |
4c3721d5 | 4016 | PUT_WORD (output_bfd, |
2edc8357 ILT |
4017 | (bfd_get_section_vma (output_bfd, |
4018 | obj_textsec (input_bfd)->output_section) | |
4019 | + obj_textsec (input_bfd)->output_offset), | |
4c3721d5 ILT |
4020 | outsym->e_value); |
4021 | ++obj_aout_external_sym_count (output_bfd); | |
4022 | ++outsym; | |
4023 | } | |
4024 | ||
4025 | pass = false; | |
ab0434c2 | 4026 | skip_next = false; |
4c3721d5 ILT |
4027 | sym = obj_aout_external_syms (input_bfd); |
4028 | sym_end = sym + sym_count; | |
4029 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
1afd2380 | 4030 | symbol_map = finfo->symbol_map; |
14dc2f77 | 4031 | memset (symbol_map, 0, sym_count * sizeof *symbol_map); |
4c3721d5 ILT |
4032 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) |
4033 | { | |
4034 | const char *name; | |
4035 | int type; | |
d6d6b18a | 4036 | struct aout_link_hash_entry *h; |
4c3721d5 ILT |
4037 | boolean skip; |
4038 | asection *symsec; | |
4039 | bfd_vma val = 0; | |
d17fc4c9 | 4040 | boolean copy; |
4c3721d5 | 4041 | |
14dc2f77 ILT |
4042 | /* We set *symbol_map to 0 above for all symbols. If it has |
4043 | already been set to -1 for this symbol, it means that we are | |
4044 | discarding it because it appears in a duplicate header file. | |
4045 | See the N_BINCL code below. */ | |
4046 | if (*symbol_map == -1) | |
4047 | continue; | |
4048 | ||
4049 | /* Initialize *symbol_map to -1, which means that the symbol was | |
4050 | not copied into the output file. We will change it later if | |
4051 | we do copy the symbol over. */ | |
4c3721d5 ILT |
4052 | *symbol_map = -1; |
4053 | ||
4054 | type = bfd_h_get_8 (input_bfd, sym->e_type); | |
4055 | name = strings + GET_WORD (input_bfd, sym->e_strx); | |
4056 | ||
d6d6b18a ILT |
4057 | h = NULL; |
4058 | ||
4c3721d5 ILT |
4059 | if (pass) |
4060 | { | |
53155af1 ILT |
4061 | /* Pass this symbol through. It is the target of an |
4062 | indirect or warning symbol. */ | |
4c3721d5 ILT |
4063 | val = GET_WORD (input_bfd, sym->e_value); |
4064 | pass = false; | |
4065 | } | |
ab0434c2 | 4066 | else if (skip_next) |
53155af1 ILT |
4067 | { |
4068 | /* Skip this symbol, which is the target of an indirect | |
4069 | symbol that we have changed to no longer be an indirect | |
4070 | symbol. */ | |
ab0434c2 | 4071 | skip_next = false; |
53155af1 ILT |
4072 | continue; |
4073 | } | |
4c3721d5 ILT |
4074 | else |
4075 | { | |
53155af1 | 4076 | struct aout_link_hash_entry *hresolve; |
4c3721d5 ILT |
4077 | |
4078 | /* We have saved the hash table entry for this symbol, if | |
4079 | there is one. Note that we could just look it up again | |
4080 | in the hash table, provided we first check that it is an | |
4081 | external symbol. */ | |
4082 | h = *sym_hash; | |
4083 | ||
7ec49f91 ILT |
4084 | /* Use the name from the hash table, in case the symbol was |
4085 | wrapped. */ | |
4086 | if (h != NULL) | |
4087 | name = h->root.root.string; | |
4088 | ||
3a5b50f4 ILT |
4089 | /* If this is an indirect or warning symbol, then change |
4090 | hresolve to the base symbol. We also change *sym_hash so | |
4091 | that the relocation routines relocate against the real | |
4092 | symbol. */ | |
53155af1 ILT |
4093 | hresolve = h; |
4094 | if (h != (struct aout_link_hash_entry *) NULL | |
3a5b50f4 ILT |
4095 | && (h->root.type == bfd_link_hash_indirect |
4096 | || h->root.type == bfd_link_hash_warning)) | |
53155af1 ILT |
4097 | { |
4098 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; | |
118e8d1c ILT |
4099 | while (hresolve->root.type == bfd_link_hash_indirect |
4100 | || hresolve->root.type == bfd_link_hash_warning) | |
53155af1 ILT |
4101 | hresolve = ((struct aout_link_hash_entry *) |
4102 | hresolve->root.u.i.link); | |
4103 | *sym_hash = hresolve; | |
4104 | } | |
4105 | ||
4c3721d5 ILT |
4106 | /* If the symbol has already been written out, skip it. */ |
4107 | if (h != (struct aout_link_hash_entry *) NULL | |
e85e8bfe | 4108 | && h->root.type != bfd_link_hash_warning |
35fee729 | 4109 | && h->written) |
4c3721d5 | 4110 | { |
ab0434c2 ILT |
4111 | if ((type & N_TYPE) == N_INDR |
4112 | || type == N_WARNING) | |
4113 | skip_next = true; | |
4c3721d5 ILT |
4114 | *symbol_map = h->indx; |
4115 | continue; | |
4116 | } | |
4117 | ||
4118 | /* See if we are stripping this symbol. */ | |
4119 | skip = false; | |
4120 | switch (strip) | |
4121 | { | |
4122 | case strip_none: | |
4123 | break; | |
4124 | case strip_debugger: | |
4125 | if ((type & N_STAB) != 0) | |
4126 | skip = true; | |
4127 | break; | |
4128 | case strip_some: | |
4129 | if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false) | |
4130 | == NULL) | |
4131 | skip = true; | |
4132 | break; | |
4133 | case strip_all: | |
4134 | skip = true; | |
4135 | break; | |
4136 | } | |
4137 | if (skip) | |
4138 | { | |
4139 | if (h != (struct aout_link_hash_entry *) NULL) | |
35fee729 | 4140 | h->written = true; |
4c3721d5 ILT |
4141 | continue; |
4142 | } | |
4143 | ||
4144 | /* Get the value of the symbol. */ | |
4298e311 ILT |
4145 | if ((type & N_TYPE) == N_TEXT |
4146 | || type == N_WEAKT) | |
4c3721d5 | 4147 | symsec = obj_textsec (input_bfd); |
4298e311 ILT |
4148 | else if ((type & N_TYPE) == N_DATA |
4149 | || type == N_WEAKD) | |
4c3721d5 | 4150 | symsec = obj_datasec (input_bfd); |
4298e311 ILT |
4151 | else if ((type & N_TYPE) == N_BSS |
4152 | || type == N_WEAKB) | |
4c3721d5 | 4153 | symsec = obj_bsssec (input_bfd); |
4298e311 ILT |
4154 | else if ((type & N_TYPE) == N_ABS |
4155 | || type == N_WEAKA) | |
4587b578 | 4156 | symsec = bfd_abs_section_ptr; |
53155af1 ILT |
4157 | else if (((type & N_TYPE) == N_INDR |
4158 | && (hresolve == (struct aout_link_hash_entry *) NULL | |
4159 | || (hresolve->root.type != bfd_link_hash_defined | |
6c97aedf | 4160 | && hresolve->root.type != bfd_link_hash_defweak |
53155af1 | 4161 | && hresolve->root.type != bfd_link_hash_common))) |
4c3721d5 ILT |
4162 | || type == N_WARNING) |
4163 | { | |
53155af1 ILT |
4164 | /* Pass the next symbol through unchanged. The |
4165 | condition above for indirect symbols is so that if | |
4166 | the indirect symbol was defined, we output it with | |
4167 | the correct definition so the debugger will | |
4168 | understand it. */ | |
4c3721d5 ILT |
4169 | pass = true; |
4170 | val = GET_WORD (input_bfd, sym->e_value); | |
4171 | symsec = NULL; | |
4172 | } | |
4173 | else if ((type & N_STAB) != 0) | |
4174 | { | |
4175 | val = GET_WORD (input_bfd, sym->e_value); | |
4176 | symsec = NULL; | |
4177 | } | |
4178 | else | |
4179 | { | |
53155af1 ILT |
4180 | /* If we get here with an indirect symbol, it means that |
4181 | we are outputting it with a real definition. In such | |
4182 | a case we do not want to output the next symbol, | |
4183 | which is the target of the indirection. */ | |
4184 | if ((type & N_TYPE) == N_INDR) | |
ab0434c2 | 4185 | skip_next = true; |
53155af1 | 4186 | |
f4945271 ILT |
4187 | symsec = NULL; |
4188 | ||
53155af1 ILT |
4189 | /* We need to get the value from the hash table. We use |
4190 | hresolve so that if we have defined an indirect | |
4191 | symbol we output the final definition. */ | |
4c3721d5 | 4192 | if (h == (struct aout_link_hash_entry *) NULL) |
f4945271 ILT |
4193 | { |
4194 | switch (type & N_TYPE) | |
4195 | { | |
4196 | case N_SETT: | |
4197 | symsec = obj_textsec (input_bfd); | |
4198 | break; | |
4199 | case N_SETD: | |
4200 | symsec = obj_datasec (input_bfd); | |
4201 | break; | |
4202 | case N_SETB: | |
4203 | symsec = obj_bsssec (input_bfd); | |
4204 | break; | |
4205 | case N_SETA: | |
4206 | symsec = bfd_abs_section_ptr; | |
4207 | break; | |
4208 | default: | |
4209 | val = 0; | |
4210 | break; | |
4211 | } | |
4212 | } | |
6c97aedf ILT |
4213 | else if (hresolve->root.type == bfd_link_hash_defined |
4214 | || hresolve->root.type == bfd_link_hash_defweak) | |
4c3721d5 | 4215 | { |
53155af1 | 4216 | asection *input_section; |
4c3721d5 ILT |
4217 | asection *output_section; |
4218 | ||
6c97aedf ILT |
4219 | /* This case usually means a common symbol which was |
4220 | turned into a defined symbol. */ | |
53155af1 ILT |
4221 | input_section = hresolve->root.u.def.section; |
4222 | output_section = input_section->output_section; | |
4587b578 | 4223 | BFD_ASSERT (bfd_is_abs_section (output_section) |
4c3721d5 | 4224 | || output_section->owner == output_bfd); |
53155af1 | 4225 | val = (hresolve->root.u.def.value |
4c3721d5 | 4226 | + bfd_get_section_vma (output_bfd, output_section) |
53155af1 | 4227 | + input_section->output_offset); |
4c3721d5 ILT |
4228 | |
4229 | /* Get the correct type based on the section. If | |
4230 | this is a constructed set, force it to be | |
4231 | globally visible. */ | |
4232 | if (type == N_SETT | |
4233 | || type == N_SETD | |
4234 | || type == N_SETB | |
4235 | || type == N_SETA) | |
4236 | type |= N_EXT; | |
4237 | ||
4238 | type &=~ N_TYPE; | |
4239 | ||
4240 | if (output_section == obj_textsec (output_bfd)) | |
6c97aedf ILT |
4241 | type |= (hresolve->root.type == bfd_link_hash_defined |
4242 | ? N_TEXT | |
4243 | : N_WEAKT); | |
4c3721d5 | 4244 | else if (output_section == obj_datasec (output_bfd)) |
6c97aedf ILT |
4245 | type |= (hresolve->root.type == bfd_link_hash_defined |
4246 | ? N_DATA | |
4247 | : N_WEAKD); | |
4c3721d5 | 4248 | else if (output_section == obj_bsssec (output_bfd)) |
6c97aedf ILT |
4249 | type |= (hresolve->root.type == bfd_link_hash_defined |
4250 | ? N_BSS | |
4251 | : N_WEAKB); | |
4c3721d5 | 4252 | else |
6c97aedf ILT |
4253 | type |= (hresolve->root.type == bfd_link_hash_defined |
4254 | ? N_ABS | |
4255 | : N_WEAKA); | |
4c3721d5 | 4256 | } |
53155af1 ILT |
4257 | else if (hresolve->root.type == bfd_link_hash_common) |
4258 | val = hresolve->root.u.c.size; | |
6c97aedf | 4259 | else if (hresolve->root.type == bfd_link_hash_undefweak) |
4298e311 ILT |
4260 | { |
4261 | val = 0; | |
4262 | type = N_WEAKU; | |
4263 | } | |
4c3721d5 ILT |
4264 | else |
4265 | val = 0; | |
4c3721d5 ILT |
4266 | } |
4267 | if (symsec != (asection *) NULL) | |
4268 | val = (symsec->output_section->vma | |
4269 | + symsec->output_offset | |
4270 | + (GET_WORD (input_bfd, sym->e_value) | |
4271 | - symsec->vma)); | |
4272 | ||
4273 | /* If this is a global symbol set the written flag, and if | |
4274 | it is a local symbol see if we should discard it. */ | |
4275 | if (h != (struct aout_link_hash_entry *) NULL) | |
4276 | { | |
35fee729 | 4277 | h->written = true; |
4c3721d5 ILT |
4278 | h->indx = obj_aout_external_sym_count (output_bfd); |
4279 | } | |
f4945271 ILT |
4280 | else if ((type & N_TYPE) != N_SETT |
4281 | && (type & N_TYPE) != N_SETD | |
4282 | && (type & N_TYPE) != N_SETB | |
4283 | && (type & N_TYPE) != N_SETA) | |
4c3721d5 ILT |
4284 | { |
4285 | switch (discard) | |
4286 | { | |
4287 | case discard_none: | |
4288 | break; | |
4289 | case discard_l: | |
167dc907 | 4290 | if ((type & N_STAB) == 0 |
508539ab | 4291 | && bfd_is_local_label_name (input_bfd, name)) |
4c3721d5 ILT |
4292 | skip = true; |
4293 | break; | |
4294 | case discard_all: | |
4295 | skip = true; | |
4296 | break; | |
4297 | } | |
4298 | if (skip) | |
4299 | { | |
4300 | pass = false; | |
4301 | continue; | |
4302 | } | |
4303 | } | |
14dc2f77 ILT |
4304 | |
4305 | /* An N_BINCL symbol indicates the start of the stabs | |
4306 | entries for a header file. We need to scan ahead to the | |
4307 | next N_EINCL symbol, ignoring nesting, adding up all the | |
4308 | characters in the symbol names, not including the file | |
4309 | numbers in types (the first number after an open | |
4310 | parenthesis). */ | |
4311 | if (type == N_BINCL) | |
4312 | { | |
4313 | struct external_nlist *incl_sym; | |
4314 | int nest; | |
4315 | struct aout_link_includes_entry *incl_entry; | |
4316 | struct aout_link_includes_totals *t; | |
4317 | ||
4318 | val = 0; | |
4319 | nest = 0; | |
4320 | for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) | |
4321 | { | |
4322 | int incl_type; | |
4323 | ||
4324 | incl_type = bfd_h_get_8 (input_bfd, incl_sym->e_type); | |
4325 | if (incl_type == N_EINCL) | |
4326 | { | |
4327 | if (nest == 0) | |
4328 | break; | |
4329 | --nest; | |
4330 | } | |
4331 | else if (incl_type == N_BINCL) | |
4332 | ++nest; | |
4333 | else if (nest == 0) | |
4334 | { | |
4335 | const char *s; | |
4336 | ||
4337 | s = strings + GET_WORD (input_bfd, incl_sym->e_strx); | |
4338 | for (; *s != '\0'; s++) | |
4339 | { | |
4340 | val += *s; | |
4341 | if (*s == '(') | |
4342 | { | |
4343 | /* Skip the file number. */ | |
4344 | ++s; | |
4345 | while (isdigit ((unsigned char) *s)) | |
4346 | ++s; | |
4347 | --s; | |
4348 | } | |
4349 | } | |
4350 | } | |
4351 | } | |
4352 | ||
4353 | /* If we have already included a header file with the | |
4354 | same value, then replace this one with an N_EXCL | |
4355 | symbol. */ | |
4356 | copy = ! finfo->info->keep_memory; | |
4357 | incl_entry = aout_link_includes_lookup (&finfo->includes, | |
4358 | name, true, copy); | |
4359 | if (incl_entry == NULL) | |
4360 | return false; | |
4361 | for (t = incl_entry->totals; t != NULL; t = t->next) | |
4362 | if (t->total == val) | |
4363 | break; | |
4364 | if (t == NULL) | |
4365 | { | |
4366 | /* This is the first time we have seen this header | |
4367 | file with this set of stabs strings. */ | |
4368 | t = ((struct aout_link_includes_totals *) | |
4369 | bfd_hash_allocate (&finfo->includes.root, | |
4370 | sizeof *t)); | |
4371 | if (t == NULL) | |
4372 | return false; | |
4373 | t->total = val; | |
4374 | t->next = incl_entry->totals; | |
4375 | incl_entry->totals = t; | |
4376 | } | |
4377 | else | |
4378 | { | |
4379 | int *incl_map; | |
4380 | ||
4381 | /* This is a duplicate header file. We must change | |
4382 | it to be an N_EXCL entry, and mark all the | |
4383 | included symbols to prevent outputting them. */ | |
4384 | type = N_EXCL; | |
4385 | ||
4386 | nest = 0; | |
4387 | for (incl_sym = sym + 1, incl_map = symbol_map + 1; | |
4388 | incl_sym < sym_end; | |
4389 | incl_sym++, incl_map++) | |
4390 | { | |
4391 | int incl_type; | |
4392 | ||
4393 | incl_type = bfd_h_get_8 (input_bfd, incl_sym->e_type); | |
4394 | if (incl_type == N_EINCL) | |
4395 | { | |
4396 | if (nest == 0) | |
4397 | { | |
4398 | *incl_map = -1; | |
4399 | break; | |
4400 | } | |
4401 | --nest; | |
4402 | } | |
4403 | else if (incl_type == N_BINCL) | |
4404 | ++nest; | |
4405 | else if (nest == 0) | |
4406 | *incl_map = -1; | |
4407 | } | |
4408 | } | |
4409 | } | |
4c3721d5 ILT |
4410 | } |
4411 | ||
4412 | /* Copy this symbol into the list of symbols we are going to | |
4413 | write out. */ | |
4414 | bfd_h_put_8 (output_bfd, type, outsym->e_type); | |
4415 | bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other), | |
4416 | outsym->e_other); | |
4417 | bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc), | |
4418 | outsym->e_desc); | |
d17fc4c9 | 4419 | copy = false; |
d6d6b18a ILT |
4420 | if (! finfo->info->keep_memory) |
4421 | { | |
4422 | /* name points into a string table which we are going to | |
4423 | free. If there is a hash table entry, use that string. | |
4424 | Otherwise, copy name into memory. */ | |
4425 | if (h != (struct aout_link_hash_entry *) NULL) | |
1afd2380 | 4426 | name = h->root.root.string; |
d6d6b18a | 4427 | else |
d17fc4c9 | 4428 | copy = true; |
d6d6b18a | 4429 | } |
1afd2380 | 4430 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, |
d17fc4c9 ILT |
4431 | name, copy); |
4432 | if (strtab_index == (bfd_size_type) -1) | |
1afd2380 | 4433 | return false; |
d17fc4c9 | 4434 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); |
4c3721d5 ILT |
4435 | PUT_WORD (output_bfd, val, outsym->e_value); |
4436 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
4437 | ++obj_aout_external_sym_count (output_bfd); | |
4438 | ++outsym; | |
4439 | } | |
4440 | ||
4441 | /* Write out the output symbols we have just constructed. */ | |
1afd2380 | 4442 | if (outsym > finfo->output_syms) |
4c3721d5 ILT |
4443 | { |
4444 | bfd_size_type outsym_count; | |
4445 | ||
4446 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0) | |
1afd2380 ILT |
4447 | return false; |
4448 | outsym_count = outsym - finfo->output_syms; | |
4449 | if (bfd_write ((PTR) finfo->output_syms, | |
4450 | (bfd_size_type) EXTERNAL_NLIST_SIZE, | |
4c3721d5 ILT |
4451 | (bfd_size_type) outsym_count, output_bfd) |
4452 | != outsym_count * EXTERNAL_NLIST_SIZE) | |
1afd2380 | 4453 | return false; |
4c3721d5 ILT |
4454 | finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE; |
4455 | } | |
4456 | ||
4457 | return true; | |
4458 | } | |
4459 | ||
4460 | /* Write out a symbol that was not associated with an a.out input | |
4461 | object. */ | |
4462 | ||
4463 | static boolean | |
4464 | aout_link_write_other_symbol (h, data) | |
4465 | struct aout_link_hash_entry *h; | |
4466 | PTR data; | |
4467 | { | |
4468 | struct aout_final_link_info *finfo = (struct aout_final_link_info *) data; | |
4469 | bfd *output_bfd; | |
4470 | int type; | |
4471 | bfd_vma val; | |
4472 | struct external_nlist outsym; | |
d17fc4c9 | 4473 | bfd_size_type indx; |
4c3721d5 | 4474 | |
e85e8bfe ILT |
4475 | output_bfd = finfo->output_bfd; |
4476 | ||
4477 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) | |
4478 | { | |
4479 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) | |
4480 | (output_bfd, finfo->info, h))) | |
4481 | { | |
4482 | /* FIXME: No way to handle errors. */ | |
4483 | abort (); | |
4484 | } | |
4485 | } | |
4486 | ||
35fee729 | 4487 | if (h->written) |
4c3721d5 ILT |
4488 | return true; |
4489 | ||
35fee729 | 4490 | h->written = true; |
9783e04a | 4491 | |
74942465 ILT |
4492 | /* An indx of -2 means the symbol must be written. */ |
4493 | if (h->indx != -2 | |
4494 | && (finfo->info->strip == strip_all | |
4495 | || (finfo->info->strip == strip_some | |
4496 | && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string, | |
4497 | false, false) == NULL))) | |
9783e04a DM |
4498 | return true; |
4499 | ||
4c3721d5 ILT |
4500 | switch (h->root.type) |
4501 | { | |
4502 | default: | |
4c3721d5 ILT |
4503 | abort (); |
4504 | /* Avoid variable not initialized warnings. */ | |
4505 | return true; | |
f4945271 ILT |
4506 | case bfd_link_hash_new: |
4507 | /* This can happen for set symbols when sets are not being | |
4508 | built. */ | |
4509 | return true; | |
4c3721d5 ILT |
4510 | case bfd_link_hash_undefined: |
4511 | type = N_UNDF | N_EXT; | |
4512 | val = 0; | |
4513 | break; | |
4514 | case bfd_link_hash_defined: | |
6c97aedf | 4515 | case bfd_link_hash_defweak: |
4c3721d5 ILT |
4516 | { |
4517 | asection *sec; | |
4518 | ||
4f019d04 | 4519 | sec = h->root.u.def.section->output_section; |
4587b578 | 4520 | BFD_ASSERT (bfd_is_abs_section (sec) |
4c3721d5 ILT |
4521 | || sec->owner == output_bfd); |
4522 | if (sec == obj_textsec (output_bfd)) | |
6c97aedf | 4523 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; |
4c3721d5 | 4524 | else if (sec == obj_datasec (output_bfd)) |
6c97aedf | 4525 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; |
4c3721d5 | 4526 | else if (sec == obj_bsssec (output_bfd)) |
6c97aedf | 4527 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; |
4c3721d5 | 4528 | else |
6c97aedf ILT |
4529 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; |
4530 | type |= N_EXT; | |
4c3721d5 | 4531 | val = (h->root.u.def.value |
4f019d04 ILT |
4532 | + sec->vma |
4533 | + h->root.u.def.section->output_offset); | |
4c3721d5 ILT |
4534 | } |
4535 | break; | |
4536 | case bfd_link_hash_common: | |
4537 | type = N_UNDF | N_EXT; | |
4538 | val = h->root.u.c.size; | |
4539 | break; | |
6c97aedf | 4540 | case bfd_link_hash_undefweak: |
4298e311 ILT |
4541 | type = N_WEAKU; |
4542 | val = 0; | |
4c3721d5 ILT |
4543 | case bfd_link_hash_indirect: |
4544 | case bfd_link_hash_warning: | |
4545 | /* FIXME: Ignore these for now. The circumstances under which | |
4546 | they should be written out are not clear to me. */ | |
4547 | return true; | |
4548 | } | |
4549 | ||
4550 | bfd_h_put_8 (output_bfd, type, outsym.e_type); | |
4551 | bfd_h_put_8 (output_bfd, 0, outsym.e_other); | |
4552 | bfd_h_put_16 (output_bfd, 0, outsym.e_desc); | |
1afd2380 | 4553 | indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string, |
d17fc4c9 ILT |
4554 | false); |
4555 | if (indx == (bfd_size_type) -1) | |
4556 | { | |
4557 | /* FIXME: No way to handle errors. */ | |
4558 | abort (); | |
4559 | } | |
4560 | PUT_WORD (output_bfd, indx, outsym.e_strx); | |
4c3721d5 ILT |
4561 | PUT_WORD (output_bfd, val, outsym.e_value); |
4562 | ||
4563 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0 | |
4564 | || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE, | |
4565 | (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE) | |
4566 | { | |
4567 | /* FIXME: No way to handle errors. */ | |
4568 | abort (); | |
4569 | } | |
4570 | ||
4571 | finfo->symoff += EXTERNAL_NLIST_SIZE; | |
4572 | h->indx = obj_aout_external_sym_count (output_bfd); | |
4573 | ++obj_aout_external_sym_count (output_bfd); | |
4574 | ||
4575 | return true; | |
4576 | } | |
4577 | ||
4578 | /* Link an a.out section into the output file. */ | |
4579 | ||
4580 | static boolean | |
4581 | aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr, | |
1afd2380 | 4582 | rel_size) |
4c3721d5 ILT |
4583 | struct aout_final_link_info *finfo; |
4584 | bfd *input_bfd; | |
4585 | asection *input_section; | |
4586 | file_ptr *reloff_ptr; | |
4587 | bfd_size_type rel_size; | |
4c3721d5 ILT |
4588 | { |
4589 | bfd_size_type input_size; | |
e85e8bfe | 4590 | PTR relocs; |
4c3721d5 ILT |
4591 | |
4592 | /* Get the section contents. */ | |
4593 | input_size = bfd_section_size (input_bfd, input_section); | |
1afd2380 ILT |
4594 | if (! bfd_get_section_contents (input_bfd, input_section, |
4595 | (PTR) finfo->contents, | |
4c3721d5 | 4596 | (file_ptr) 0, input_size)) |
1afd2380 | 4597 | return false; |
4c3721d5 | 4598 | |
e85e8bfe ILT |
4599 | /* Read in the relocs if we haven't already done it. */ |
4600 | if (aout_section_data (input_section) != NULL | |
4601 | && aout_section_data (input_section)->relocs != NULL) | |
4602 | relocs = aout_section_data (input_section)->relocs; | |
4603 | else | |
80425e6c | 4604 | { |
1afd2380 | 4605 | relocs = finfo->relocs; |
875e4716 ILT |
4606 | if (rel_size > 0) |
4607 | { | |
4608 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
4609 | || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size) | |
4610 | return false; | |
4611 | } | |
80425e6c | 4612 | } |
4c3721d5 ILT |
4613 | |
4614 | /* Relocate the section contents. */ | |
4615 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) | |
4616 | { | |
4617 | if (! aout_link_input_section_std (finfo, input_bfd, input_section, | |
4618 | (struct reloc_std_external *) relocs, | |
1afd2380 ILT |
4619 | rel_size, finfo->contents)) |
4620 | return false; | |
4c3721d5 ILT |
4621 | } |
4622 | else | |
4623 | { | |
4624 | if (! aout_link_input_section_ext (finfo, input_bfd, input_section, | |
4625 | (struct reloc_ext_external *) relocs, | |
1afd2380 ILT |
4626 | rel_size, finfo->contents)) |
4627 | return false; | |
4c3721d5 ILT |
4628 | } |
4629 | ||
4630 | /* Write out the section contents. */ | |
4631 | if (! bfd_set_section_contents (finfo->output_bfd, | |
4632 | input_section->output_section, | |
1afd2380 | 4633 | (PTR) finfo->contents, |
728472f1 | 4634 | input_section->output_offset, |
4c3721d5 | 4635 | input_size)) |
1afd2380 | 4636 | return false; |
4c3721d5 ILT |
4637 | |
4638 | /* If we are producing relocateable output, the relocs were | |
4639 | modified, and we now write them out. */ | |
875e4716 | 4640 | if (finfo->info->relocateable && rel_size > 0) |
4c3721d5 ILT |
4641 | { |
4642 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) | |
1afd2380 | 4643 | return false; |
4c3721d5 ILT |
4644 | if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd) |
4645 | != rel_size) | |
1afd2380 | 4646 | return false; |
4c3721d5 ILT |
4647 | *reloff_ptr += rel_size; |
4648 | ||
4649 | /* Assert that the relocs have not run into the symbols, and | |
4650 | that if these are the text relocs they have not run into the | |
4651 | data relocs. */ | |
4652 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
4653 | && (reloff_ptr != &finfo->treloff | |
4654 | || (*reloff_ptr | |
4655 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
4656 | } | |
4657 | ||
4658 | return true; | |
4659 | } | |
4660 | ||
4661 | /* Get the section corresponding to a reloc index. */ | |
4662 | ||
4663 | static INLINE asection * | |
4664 | aout_reloc_index_to_section (abfd, indx) | |
4665 | bfd *abfd; | |
4666 | int indx; | |
4667 | { | |
4668 | switch (indx & N_TYPE) | |
4669 | { | |
4670 | case N_TEXT: | |
4671 | return obj_textsec (abfd); | |
4672 | case N_DATA: | |
4673 | return obj_datasec (abfd); | |
4674 | case N_BSS: | |
4675 | return obj_bsssec (abfd); | |
4676 | case N_ABS: | |
fa2302b8 | 4677 | case N_UNDF: |
4587b578 | 4678 | return bfd_abs_section_ptr; |
4c3721d5 ILT |
4679 | default: |
4680 | abort (); | |
4681 | } | |
4682 | } | |
4683 | ||
4684 | /* Relocate an a.out section using standard a.out relocs. */ | |
4685 | ||
4686 | static boolean | |
4687 | aout_link_input_section_std (finfo, input_bfd, input_section, relocs, | |
1afd2380 | 4688 | rel_size, contents) |
4c3721d5 ILT |
4689 | struct aout_final_link_info *finfo; |
4690 | bfd *input_bfd; | |
4691 | asection *input_section; | |
4692 | struct reloc_std_external *relocs; | |
4693 | bfd_size_type rel_size; | |
4694 | bfd_byte *contents; | |
4c3721d5 | 4695 | { |
e85e8bfe ILT |
4696 | boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *, |
4697 | bfd *, asection *, | |
4698 | struct aout_link_hash_entry *, | |
ae115e51 ILT |
4699 | PTR, bfd_byte *, boolean *, |
4700 | bfd_vma *)); | |
4c3721d5 ILT |
4701 | bfd *output_bfd; |
4702 | boolean relocateable; | |
4703 | struct external_nlist *syms; | |
4704 | char *strings; | |
4705 | struct aout_link_hash_entry **sym_hashes; | |
1afd2380 | 4706 | int *symbol_map; |
4c3721d5 ILT |
4707 | bfd_size_type reloc_count; |
4708 | register struct reloc_std_external *rel; | |
4709 | struct reloc_std_external *rel_end; | |
4710 | ||
4711 | output_bfd = finfo->output_bfd; | |
e85e8bfe | 4712 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
4c3721d5 ILT |
4713 | |
4714 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE); | |
64d5f5d0 ILT |
4715 | BFD_ASSERT (input_bfd->xvec->header_byteorder |
4716 | == output_bfd->xvec->header_byteorder); | |
4c3721d5 ILT |
4717 | |
4718 | relocateable = finfo->info->relocateable; | |
4719 | syms = obj_aout_external_syms (input_bfd); | |
4720 | strings = obj_aout_external_strings (input_bfd); | |
4721 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
1afd2380 | 4722 | symbol_map = finfo->symbol_map; |
4c3721d5 ILT |
4723 | |
4724 | reloc_count = rel_size / RELOC_STD_SIZE; | |
4725 | rel = relocs; | |
4726 | rel_end = rel + reloc_count; | |
4727 | for (; rel < rel_end; rel++) | |
4728 | { | |
4729 | bfd_vma r_addr; | |
4730 | int r_index; | |
4731 | int r_extern; | |
4732 | int r_pcrel; | |
ae115e51 | 4733 | int r_baserel = 0; |
f42fe159 | 4734 | reloc_howto_type *howto; |
ae115e51 | 4735 | struct aout_link_hash_entry *h = NULL; |
4c3721d5 ILT |
4736 | bfd_vma relocation; |
4737 | bfd_reloc_status_type r; | |
4738 | ||
4739 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
4740 | ||
f42fe159 ILT |
4741 | #ifdef MY_reloc_howto |
4742 | howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel); | |
4743 | #else | |
ae115e51 ILT |
4744 | { |
4745 | int r_jmptable; | |
4746 | int r_relative; | |
4747 | int r_length; | |
4748 | unsigned int howto_idx; | |
4c3721d5 | 4749 | |
64d5f5d0 | 4750 | if (bfd_header_big_endian (input_bfd)) |
ae115e51 ILT |
4751 | { |
4752 | r_index = ((rel->r_index[0] << 16) | |
4753 | | (rel->r_index[1] << 8) | |
4754 | | rel->r_index[2]); | |
4755 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
4756 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
4757 | r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
4758 | r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
4759 | r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
4760 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
4761 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
4762 | } | |
4763 | else | |
4764 | { | |
4765 | r_index = ((rel->r_index[2] << 16) | |
4766 | | (rel->r_index[1] << 8) | |
4767 | | rel->r_index[0]); | |
4768 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
4769 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
4770 | r_baserel = (0 != (rel->r_type[0] | |
4771 | & RELOC_STD_BITS_BASEREL_LITTLE)); | |
4772 | r_jmptable= (0 != (rel->r_type[0] | |
4773 | & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
4774 | r_relative= (0 != (rel->r_type[0] | |
4775 | & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
4776 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
4777 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
4778 | } | |
4779 | ||
4780 | howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel | |
4781 | + 16 * r_jmptable + 32 * r_relative); | |
4782 | BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std)); | |
4783 | howto = howto_table_std + howto_idx; | |
4784 | } | |
f42fe159 | 4785 | #endif |
4c3721d5 ILT |
4786 | |
4787 | if (relocateable) | |
4788 | { | |
4789 | /* We are generating a relocateable output file, and must | |
4790 | modify the reloc accordingly. */ | |
4791 | if (r_extern) | |
4792 | { | |
4c3721d5 ILT |
4793 | /* If we know the symbol this relocation is against, |
4794 | convert it into a relocation against a section. This | |
4795 | is what the native linker does. */ | |
4796 | h = sym_hashes[r_index]; | |
4797 | if (h != (struct aout_link_hash_entry *) NULL | |
6c97aedf ILT |
4798 | && (h->root.type == bfd_link_hash_defined |
4799 | || h->root.type == bfd_link_hash_defweak)) | |
4c3721d5 ILT |
4800 | { |
4801 | asection *output_section; | |
4802 | ||
4803 | /* Change the r_extern value. */ | |
64d5f5d0 | 4804 | if (bfd_header_big_endian (output_bfd)) |
4c3721d5 ILT |
4805 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG; |
4806 | else | |
4807 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE; | |
4808 | ||
4809 | /* Compute a new r_index. */ | |
4810 | output_section = h->root.u.def.section->output_section; | |
4811 | if (output_section == obj_textsec (output_bfd)) | |
4812 | r_index = N_TEXT; | |
4813 | else if (output_section == obj_datasec (output_bfd)) | |
4814 | r_index = N_DATA; | |
4815 | else if (output_section == obj_bsssec (output_bfd)) | |
4816 | r_index = N_BSS; | |
4817 | else | |
4818 | r_index = N_ABS; | |
4819 | ||
4820 | /* Add the symbol value and the section VMA to the | |
4821 | addend stored in the contents. */ | |
4822 | relocation = (h->root.u.def.value | |
4823 | + output_section->vma | |
4824 | + h->root.u.def.section->output_offset); | |
4825 | } | |
4826 | else | |
4827 | { | |
4828 | /* We must change r_index according to the symbol | |
4829 | map. */ | |
4830 | r_index = symbol_map[r_index]; | |
4831 | ||
4832 | if (r_index == -1) | |
4833 | { | |
74942465 ILT |
4834 | if (h != NULL) |
4835 | { | |
4836 | /* We decided to strip this symbol, but it | |
4837 | turns out that we can't. Note that we | |
4838 | lose the other and desc information here. | |
4839 | I don't think that will ever matter for a | |
4840 | global symbol. */ | |
4841 | if (h->indx < 0) | |
4842 | { | |
4843 | h->indx = -2; | |
4844 | h->written = false; | |
4845 | if (! aout_link_write_other_symbol (h, | |
4846 | (PTR) finfo)) | |
4847 | return false; | |
4848 | } | |
4849 | r_index = h->indx; | |
4850 | } | |
4851 | else | |
4852 | { | |
4853 | const char *name; | |
4854 | ||
4855 | name = strings + GET_WORD (input_bfd, | |
4856 | syms[r_index].e_strx); | |
4857 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
4858 | (finfo->info, name, input_bfd, input_section, | |
4859 | r_addr))) | |
4860 | return false; | |
4861 | r_index = 0; | |
4862 | } | |
4c3721d5 ILT |
4863 | } |
4864 | ||
4865 | relocation = 0; | |
4866 | } | |
4867 | ||
4868 | /* Write out the new r_index value. */ | |
64d5f5d0 | 4869 | if (bfd_header_big_endian (output_bfd)) |
4c3721d5 ILT |
4870 | { |
4871 | rel->r_index[0] = r_index >> 16; | |
4872 | rel->r_index[1] = r_index >> 8; | |
4873 | rel->r_index[2] = r_index; | |
4874 | } | |
4875 | else | |
4876 | { | |
4877 | rel->r_index[2] = r_index >> 16; | |
4878 | rel->r_index[1] = r_index >> 8; | |
4879 | rel->r_index[0] = r_index; | |
4880 | } | |
4881 | } | |
4882 | else | |
4883 | { | |
4884 | asection *section; | |
4885 | ||
4886 | /* This is a relocation against a section. We must | |
4887 | adjust by the amount that the section moved. */ | |
4888 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4889 | relocation = (section->output_section->vma | |
4890 | + section->output_offset | |
4891 | - section->vma); | |
4892 | } | |
4893 | ||
4894 | /* Change the address of the relocation. */ | |
4895 | PUT_WORD (output_bfd, | |
4896 | r_addr + input_section->output_offset, | |
4897 | rel->r_address); | |
4898 | ||
4899 | /* Adjust a PC relative relocation by removing the reference | |
e68de5d5 ILT |
4900 | to the original address in the section and including the |
4901 | reference to the new address. */ | |
4c3721d5 | 4902 | if (r_pcrel) |
e68de5d5 ILT |
4903 | relocation -= (input_section->output_section->vma |
4904 | + input_section->output_offset | |
4905 | - input_section->vma); | |
4c3721d5 | 4906 | |
943fbd5b KR |
4907 | #ifdef MY_relocatable_reloc |
4908 | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); | |
4909 | #endif | |
4910 | ||
4c3721d5 ILT |
4911 | if (relocation == 0) |
4912 | r = bfd_reloc_ok; | |
4913 | else | |
34e9ffbc | 4914 | r = MY_relocate_contents (howto, |
4c3721d5 ILT |
4915 | input_bfd, relocation, |
4916 | contents + r_addr); | |
4917 | } | |
4918 | else | |
4919 | { | |
ae115e51 ILT |
4920 | boolean hundef; |
4921 | ||
4c3721d5 ILT |
4922 | /* We are generating an executable, and must do a full |
4923 | relocation. */ | |
ae115e51 | 4924 | hundef = false; |
4c3721d5 ILT |
4925 | if (r_extern) |
4926 | { | |
4c3721d5 | 4927 | h = sym_hashes[r_index]; |
e85e8bfe | 4928 | |
4c3721d5 | 4929 | if (h != (struct aout_link_hash_entry *) NULL |
6c97aedf ILT |
4930 | && (h->root.type == bfd_link_hash_defined |
4931 | || h->root.type == bfd_link_hash_defweak)) | |
4c3721d5 ILT |
4932 | { |
4933 | relocation = (h->root.u.def.value | |
4934 | + h->root.u.def.section->output_section->vma | |
4935 | + h->root.u.def.section->output_offset); | |
4936 | } | |
4298e311 | 4937 | else if (h != (struct aout_link_hash_entry *) NULL |
6c97aedf | 4938 | && h->root.type == bfd_link_hash_undefweak) |
4298e311 | 4939 | relocation = 0; |
4c3721d5 ILT |
4940 | else |
4941 | { | |
ae115e51 | 4942 | hundef = true; |
4c3721d5 ILT |
4943 | relocation = 0; |
4944 | } | |
4945 | } | |
4946 | else | |
4947 | { | |
4948 | asection *section; | |
4949 | ||
4950 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4951 | relocation = (section->output_section->vma | |
4952 | + section->output_offset | |
4953 | - section->vma); | |
e68de5d5 ILT |
4954 | if (r_pcrel) |
4955 | relocation += input_section->vma; | |
4c3721d5 ILT |
4956 | } |
4957 | ||
ae115e51 ILT |
4958 | if (check_dynamic_reloc != NULL) |
4959 | { | |
4960 | boolean skip; | |
4961 | ||
4962 | if (! ((*check_dynamic_reloc) | |
4963 | (finfo->info, input_bfd, input_section, h, | |
4964 | (PTR) rel, contents, &skip, &relocation))) | |
4965 | return false; | |
4966 | if (skip) | |
4967 | continue; | |
4968 | } | |
4969 | ||
4970 | /* Now warn if a global symbol is undefined. We could not | |
4971 | do this earlier, because check_dynamic_reloc might want | |
4972 | to skip this reloc. */ | |
4973 | if (hundef && ! finfo->info->shared && ! r_baserel) | |
4974 | { | |
4975 | const char *name; | |
4976 | ||
7ec49f91 ILT |
4977 | if (h != NULL) |
4978 | name = h->root.root.string; | |
4979 | else | |
4980 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
ae115e51 ILT |
4981 | if (! ((*finfo->info->callbacks->undefined_symbol) |
4982 | (finfo->info, name, input_bfd, input_section, r_addr))) | |
4983 | return false; | |
4984 | } | |
4985 | ||
34e9ffbc | 4986 | r = MY_final_link_relocate (howto, |
7ec49f91 ILT |
4987 | input_bfd, input_section, |
4988 | contents, r_addr, relocation, | |
4989 | (bfd_vma) 0); | |
4c3721d5 ILT |
4990 | } |
4991 | ||
4992 | if (r != bfd_reloc_ok) | |
4993 | { | |
4994 | switch (r) | |
4995 | { | |
4996 | default: | |
4997 | case bfd_reloc_outofrange: | |
4998 | abort (); | |
4999 | case bfd_reloc_overflow: | |
4991ebb9 ILT |
5000 | { |
5001 | const char *name; | |
5002 | ||
aad53b0d ILT |
5003 | if (h != NULL) |
5004 | name = h->root.root.string; | |
5005 | else if (r_extern) | |
4991ebb9 ILT |
5006 | name = strings + GET_WORD (input_bfd, |
5007 | syms[r_index].e_strx); | |
5008 | else | |
5009 | { | |
5010 | asection *s; | |
5011 | ||
5012 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
5013 | name = bfd_section_name (input_bfd, s); | |
5014 | } | |
5015 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
f42fe159 | 5016 | (finfo->info, name, howto->name, |
4991ebb9 ILT |
5017 | (bfd_vma) 0, input_bfd, input_section, r_addr))) |
5018 | return false; | |
5019 | } | |
4c3721d5 ILT |
5020 | break; |
5021 | } | |
5022 | } | |
5023 | } | |
5024 | ||
5025 | return true; | |
5026 | } | |
5027 | ||
5028 | /* Relocate an a.out section using extended a.out relocs. */ | |
5029 | ||
5030 | static boolean | |
5031 | aout_link_input_section_ext (finfo, input_bfd, input_section, relocs, | |
1afd2380 | 5032 | rel_size, contents) |
4c3721d5 ILT |
5033 | struct aout_final_link_info *finfo; |
5034 | bfd *input_bfd; | |
5035 | asection *input_section; | |
5036 | struct reloc_ext_external *relocs; | |
5037 | bfd_size_type rel_size; | |
5038 | bfd_byte *contents; | |
4c3721d5 | 5039 | { |
e85e8bfe ILT |
5040 | boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *, |
5041 | bfd *, asection *, | |
5042 | struct aout_link_hash_entry *, | |
ae115e51 ILT |
5043 | PTR, bfd_byte *, boolean *, |
5044 | bfd_vma *)); | |
4c3721d5 ILT |
5045 | bfd *output_bfd; |
5046 | boolean relocateable; | |
5047 | struct external_nlist *syms; | |
5048 | char *strings; | |
5049 | struct aout_link_hash_entry **sym_hashes; | |
1afd2380 | 5050 | int *symbol_map; |
4c3721d5 ILT |
5051 | bfd_size_type reloc_count; |
5052 | register struct reloc_ext_external *rel; | |
5053 | struct reloc_ext_external *rel_end; | |
5054 | ||
5055 | output_bfd = finfo->output_bfd; | |
e85e8bfe | 5056 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
4c3721d5 ILT |
5057 | |
5058 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE); | |
64d5f5d0 ILT |
5059 | BFD_ASSERT (input_bfd->xvec->header_byteorder |
5060 | == output_bfd->xvec->header_byteorder); | |
4c3721d5 ILT |
5061 | |
5062 | relocateable = finfo->info->relocateable; | |
5063 | syms = obj_aout_external_syms (input_bfd); | |
5064 | strings = obj_aout_external_strings (input_bfd); | |
5065 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
1afd2380 | 5066 | symbol_map = finfo->symbol_map; |
4c3721d5 ILT |
5067 | |
5068 | reloc_count = rel_size / RELOC_EXT_SIZE; | |
5069 | rel = relocs; | |
5070 | rel_end = rel + reloc_count; | |
5071 | for (; rel < rel_end; rel++) | |
5072 | { | |
5073 | bfd_vma r_addr; | |
5074 | int r_index; | |
5075 | int r_extern; | |
ae115e51 | 5076 | unsigned int r_type; |
4c3721d5 | 5077 | bfd_vma r_addend; |
ae115e51 ILT |
5078 | struct aout_link_hash_entry *h = NULL; |
5079 | asection *r_section = NULL; | |
4c3721d5 ILT |
5080 | bfd_vma relocation; |
5081 | ||
5082 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
5083 | ||
64d5f5d0 | 5084 | if (bfd_header_big_endian (input_bfd)) |
4c3721d5 ILT |
5085 | { |
5086 | r_index = ((rel->r_index[0] << 16) | |
5087 | | (rel->r_index[1] << 8) | |
5088 | | rel->r_index[2]); | |
5089 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
5090 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
5091 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
5092 | } | |
5093 | else | |
5094 | { | |
5095 | r_index = ((rel->r_index[2] << 16) | |
5096 | | (rel->r_index[1] << 8) | |
5097 | | rel->r_index[0]); | |
5098 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
5099 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
5100 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
5101 | } | |
5102 | ||
5103 | r_addend = GET_SWORD (input_bfd, rel->r_addend); | |
5104 | ||
ae115e51 | 5105 | BFD_ASSERT (r_type < TABLE_SIZE (howto_table_ext)); |
e68de5d5 | 5106 | |
4c3721d5 ILT |
5107 | if (relocateable) |
5108 | { | |
5109 | /* We are generating a relocateable output file, and must | |
5110 | modify the reloc accordingly. */ | |
167dc907 ILT |
5111 | if (r_extern |
5112 | || r_type == RELOC_BASE10 | |
5113 | || r_type == RELOC_BASE13 | |
5114 | || r_type == RELOC_BASE22) | |
4c3721d5 | 5115 | { |
4c3721d5 ILT |
5116 | /* If we know the symbol this relocation is against, |
5117 | convert it into a relocation against a section. This | |
5118 | is what the native linker does. */ | |
167dc907 ILT |
5119 | if (r_type == RELOC_BASE10 |
5120 | || r_type == RELOC_BASE13 | |
5121 | || r_type == RELOC_BASE22) | |
5122 | h = NULL; | |
5123 | else | |
5124 | h = sym_hashes[r_index]; | |
4c3721d5 | 5125 | if (h != (struct aout_link_hash_entry *) NULL |
6c97aedf ILT |
5126 | && (h->root.type == bfd_link_hash_defined |
5127 | || h->root.type == bfd_link_hash_defweak)) | |
4c3721d5 ILT |
5128 | { |
5129 | asection *output_section; | |
5130 | ||
5131 | /* Change the r_extern value. */ | |
64d5f5d0 | 5132 | if (bfd_header_big_endian (output_bfd)) |
4c3721d5 ILT |
5133 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG; |
5134 | else | |
5135 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE; | |
5136 | ||
5137 | /* Compute a new r_index. */ | |
5138 | output_section = h->root.u.def.section->output_section; | |
5139 | if (output_section == obj_textsec (output_bfd)) | |
5140 | r_index = N_TEXT; | |
5141 | else if (output_section == obj_datasec (output_bfd)) | |
5142 | r_index = N_DATA; | |
5143 | else if (output_section == obj_bsssec (output_bfd)) | |
5144 | r_index = N_BSS; | |
5145 | else | |
5146 | r_index = N_ABS; | |
5147 | ||
5148 | /* Add the symbol value and the section VMA to the | |
5149 | addend. */ | |
5150 | relocation = (h->root.u.def.value | |
5151 | + output_section->vma | |
5152 | + h->root.u.def.section->output_offset); | |
e68de5d5 ILT |
5153 | |
5154 | /* Now RELOCATION is the VMA of the final | |
5155 | destination. If this is a PC relative reloc, | |
5156 | then ADDEND is the negative of the source VMA. | |
5157 | We want to set ADDEND to the difference between | |
5158 | the destination VMA and the source VMA, which | |
5159 | means we must adjust RELOCATION by the change in | |
5160 | the source VMA. This is done below. */ | |
4c3721d5 ILT |
5161 | } |
5162 | else | |
5163 | { | |
5164 | /* We must change r_index according to the symbol | |
5165 | map. */ | |
5166 | r_index = symbol_map[r_index]; | |
5167 | ||
5168 | if (r_index == -1) | |
5169 | { | |
74942465 ILT |
5170 | if (h != NULL) |
5171 | { | |
5172 | /* We decided to strip this symbol, but it | |
5173 | turns out that we can't. Note that we | |
5174 | lose the other and desc information here. | |
5175 | I don't think that will ever matter for a | |
5176 | global symbol. */ | |
5177 | if (h->indx < 0) | |
5178 | { | |
5179 | h->indx = -2; | |
5180 | h->written = false; | |
5181 | if (! aout_link_write_other_symbol (h, | |
5182 | (PTR) finfo)) | |
5183 | return false; | |
5184 | } | |
5185 | r_index = h->indx; | |
5186 | } | |
5187 | else | |
5188 | { | |
5189 | const char *name; | |
5190 | ||
5191 | name = strings + GET_WORD (input_bfd, | |
5192 | syms[r_index].e_strx); | |
5193 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
5194 | (finfo->info, name, input_bfd, input_section, | |
5195 | r_addr))) | |
5196 | return false; | |
5197 | r_index = 0; | |
5198 | } | |
4c3721d5 ILT |
5199 | } |
5200 | ||
5201 | relocation = 0; | |
e68de5d5 ILT |
5202 | |
5203 | /* If this is a PC relative reloc, then the addend | |
5204 | is the negative of the source VMA. We must | |
5205 | adjust it by the change in the source VMA. This | |
5206 | is done below. */ | |
4c3721d5 ILT |
5207 | } |
5208 | ||
5209 | /* Write out the new r_index value. */ | |
64d5f5d0 | 5210 | if (bfd_header_big_endian (output_bfd)) |
4c3721d5 ILT |
5211 | { |
5212 | rel->r_index[0] = r_index >> 16; | |
5213 | rel->r_index[1] = r_index >> 8; | |
5214 | rel->r_index[2] = r_index; | |
5215 | } | |
5216 | else | |
5217 | { | |
5218 | rel->r_index[2] = r_index >> 16; | |
5219 | rel->r_index[1] = r_index >> 8; | |
5220 | rel->r_index[0] = r_index; | |
5221 | } | |
5222 | } | |
5223 | else | |
5224 | { | |
4c3721d5 ILT |
5225 | /* This is a relocation against a section. We must |
5226 | adjust by the amount that the section moved. */ | |
ae115e51 ILT |
5227 | r_section = aout_reloc_index_to_section (input_bfd, r_index); |
5228 | relocation = (r_section->output_section->vma | |
5229 | + r_section->output_offset | |
5230 | - r_section->vma); | |
4c3721d5 | 5231 | |
e68de5d5 ILT |
5232 | /* If this is a PC relative reloc, then the addend is |
5233 | the difference in VMA between the destination and the | |
5234 | source. We have just adjusted for the change in VMA | |
5235 | of the destination, so we must also adjust by the | |
5236 | change in VMA of the source. This is done below. */ | |
4c3721d5 ILT |
5237 | } |
5238 | ||
e68de5d5 | 5239 | /* As described above, we must always adjust a PC relative |
167dc907 ILT |
5240 | reloc by the change in VMA of the source. However, if |
5241 | pcrel_offset is set, then the addend does not include the | |
5242 | location within the section, in which case we don't need | |
5243 | to adjust anything. */ | |
5244 | if (howto_table_ext[r_type].pc_relative | |
5245 | && ! howto_table_ext[r_type].pcrel_offset) | |
e68de5d5 ILT |
5246 | relocation -= (input_section->output_section->vma |
5247 | + input_section->output_offset | |
5248 | - input_section->vma); | |
5249 | ||
4c3721d5 ILT |
5250 | /* Change the addend if necessary. */ |
5251 | if (relocation != 0) | |
5252 | PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend); | |
5253 | ||
5254 | /* Change the address of the relocation. */ | |
5255 | PUT_WORD (output_bfd, | |
5256 | r_addr + input_section->output_offset, | |
5257 | rel->r_address); | |
5258 | } | |
5259 | else | |
5260 | { | |
ae115e51 | 5261 | boolean hundef; |
4c3721d5 ILT |
5262 | bfd_reloc_status_type r; |
5263 | ||
5264 | /* We are generating an executable, and must do a full | |
5265 | relocation. */ | |
ae115e51 | 5266 | hundef = false; |
4c3721d5 ILT |
5267 | if (r_extern) |
5268 | { | |
4c3721d5 | 5269 | h = sym_hashes[r_index]; |
e85e8bfe | 5270 | |
4c3721d5 | 5271 | if (h != (struct aout_link_hash_entry *) NULL |
6c97aedf ILT |
5272 | && (h->root.type == bfd_link_hash_defined |
5273 | || h->root.type == bfd_link_hash_defweak)) | |
4c3721d5 ILT |
5274 | { |
5275 | relocation = (h->root.u.def.value | |
5276 | + h->root.u.def.section->output_section->vma | |
5277 | + h->root.u.def.section->output_offset); | |
5278 | } | |
4298e311 | 5279 | else if (h != (struct aout_link_hash_entry *) NULL |
6c97aedf | 5280 | && h->root.type == bfd_link_hash_undefweak) |
4298e311 | 5281 | relocation = 0; |
4c3721d5 ILT |
5282 | else |
5283 | { | |
ae115e51 | 5284 | hundef = true; |
4c3721d5 ILT |
5285 | relocation = 0; |
5286 | } | |
5287 | } | |
ae115e51 ILT |
5288 | else if (r_type == RELOC_BASE10 |
5289 | || r_type == RELOC_BASE13 | |
5290 | || r_type == RELOC_BASE22) | |
5291 | { | |
5292 | struct external_nlist *sym; | |
5293 | int type; | |
5294 | ||
5295 | /* For base relative relocs, r_index is always an index | |
5296 | into the symbol table, even if r_extern is 0. */ | |
5297 | sym = syms + r_index; | |
5298 | type = bfd_h_get_8 (input_bfd, sym->e_type); | |
5299 | if ((type & N_TYPE) == N_TEXT | |
5300 | || type == N_WEAKT) | |
5301 | r_section = obj_textsec (input_bfd); | |
5302 | else if ((type & N_TYPE) == N_DATA | |
5303 | || type == N_WEAKD) | |
5304 | r_section = obj_datasec (input_bfd); | |
5305 | else if ((type & N_TYPE) == N_BSS | |
5306 | || type == N_WEAKB) | |
5307 | r_section = obj_bsssec (input_bfd); | |
5308 | else if ((type & N_TYPE) == N_ABS | |
5309 | || type == N_WEAKA) | |
5310 | r_section = bfd_abs_section_ptr; | |
5311 | else | |
5312 | abort (); | |
5313 | relocation = (r_section->output_section->vma | |
5314 | + r_section->output_offset | |
5315 | + (GET_WORD (input_bfd, sym->e_value) | |
5316 | - r_section->vma)); | |
5317 | } | |
4c3721d5 ILT |
5318 | else |
5319 | { | |
ae115e51 | 5320 | r_section = aout_reloc_index_to_section (input_bfd, r_index); |
e68de5d5 ILT |
5321 | |
5322 | /* If this is a PC relative reloc, then R_ADDEND is the | |
5323 | difference between the two vmas, or | |
5324 | old_dest_sec + old_dest_off - (old_src_sec + old_src_off) | |
5325 | where | |
5326 | old_dest_sec == section->vma | |
5327 | and | |
5328 | old_src_sec == input_section->vma | |
5329 | and | |
5330 | old_src_off == r_addr | |
5331 | ||
5332 | _bfd_final_link_relocate expects RELOCATION + | |
5333 | R_ADDEND to be the VMA of the destination minus | |
5334 | r_addr (the minus r_addr is because this relocation | |
5335 | is not pcrel_offset, which is a bit confusing and | |
5336 | should, perhaps, be changed), or | |
5337 | new_dest_sec | |
5338 | where | |
5339 | new_dest_sec == output_section->vma + output_offset | |
5340 | We arrange for this to happen by setting RELOCATION to | |
5341 | new_dest_sec + old_src_sec - old_dest_sec | |
5342 | ||
5343 | If this is not a PC relative reloc, then R_ADDEND is | |
5344 | simply the VMA of the destination, so we set | |
5345 | RELOCATION to the change in the destination VMA, or | |
5346 | new_dest_sec - old_dest_sec | |
5347 | */ | |
ae115e51 ILT |
5348 | relocation = (r_section->output_section->vma |
5349 | + r_section->output_offset | |
5350 | - r_section->vma); | |
e68de5d5 ILT |
5351 | if (howto_table_ext[r_type].pc_relative) |
5352 | relocation += input_section->vma; | |
4c3721d5 ILT |
5353 | } |
5354 | ||
ae115e51 ILT |
5355 | if (check_dynamic_reloc != NULL) |
5356 | { | |
5357 | boolean skip; | |
5358 | ||
5359 | if (! ((*check_dynamic_reloc) | |
5360 | (finfo->info, input_bfd, input_section, h, | |
5361 | (PTR) rel, contents, &skip, &relocation))) | |
5362 | return false; | |
5363 | if (skip) | |
5364 | continue; | |
5365 | } | |
5366 | ||
5367 | /* Now warn if a global symbol is undefined. We could not | |
5368 | do this earlier, because check_dynamic_reloc might want | |
5369 | to skip this reloc. */ | |
5370 | if (hundef | |
5371 | && ! finfo->info->shared | |
5372 | && r_type != RELOC_BASE10 | |
5373 | && r_type != RELOC_BASE13 | |
5374 | && r_type != RELOC_BASE22) | |
5375 | { | |
5376 | const char *name; | |
5377 | ||
7ec49f91 ILT |
5378 | if (h != NULL) |
5379 | name = h->root.root.string; | |
5380 | else | |
5381 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
ae115e51 ILT |
5382 | if (! ((*finfo->info->callbacks->undefined_symbol) |
5383 | (finfo->info, name, input_bfd, input_section, r_addr))) | |
5384 | return false; | |
5385 | } | |
5386 | ||
34e9ffbc | 5387 | r = MY_final_link_relocate (howto_table_ext + r_type, |
7ec49f91 ILT |
5388 | input_bfd, input_section, |
5389 | contents, r_addr, relocation, | |
5390 | r_addend); | |
4c3721d5 ILT |
5391 | if (r != bfd_reloc_ok) |
5392 | { | |
5393 | switch (r) | |
5394 | { | |
5395 | default: | |
5396 | case bfd_reloc_outofrange: | |
5397 | abort (); | |
5398 | case bfd_reloc_overflow: | |
4991ebb9 ILT |
5399 | { |
5400 | const char *name; | |
5401 | ||
aad53b0d ILT |
5402 | if (h != NULL) |
5403 | name = h->root.root.string; | |
5404 | else if (r_extern | |
5405 | || r_type == RELOC_BASE10 | |
5406 | || r_type == RELOC_BASE13 | |
5407 | || r_type == RELOC_BASE22) | |
4991ebb9 ILT |
5408 | name = strings + GET_WORD (input_bfd, |
5409 | syms[r_index].e_strx); | |
5410 | else | |
5411 | { | |
5412 | asection *s; | |
5413 | ||
5414 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
5415 | name = bfd_section_name (input_bfd, s); | |
5416 | } | |
5417 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
5418 | (finfo->info, name, howto_table_ext[r_type].name, | |
5419 | r_addend, input_bfd, input_section, r_addr))) | |
5420 | return false; | |
5421 | } | |
4c3721d5 ILT |
5422 | break; |
5423 | } | |
5424 | } | |
5425 | } | |
5426 | } | |
5427 | ||
5428 | return true; | |
5429 | } | |
ec099b4b ILT |
5430 | |
5431 | /* Handle a link order which is supposed to generate a reloc. */ | |
5432 | ||
5433 | static boolean | |
5434 | aout_link_reloc_link_order (finfo, o, p) | |
5435 | struct aout_final_link_info *finfo; | |
5436 | asection *o; | |
5437 | struct bfd_link_order *p; | |
5438 | { | |
5439 | struct bfd_link_order_reloc *pr; | |
5440 | int r_index; | |
5441 | int r_extern; | |
82b1edf7 | 5442 | reloc_howto_type *howto; |
ec099b4b ILT |
5443 | file_ptr *reloff_ptr; |
5444 | struct reloc_std_external srel; | |
5445 | struct reloc_ext_external erel; | |
5446 | PTR rel_ptr; | |
5447 | ||
5448 | pr = p->u.reloc.p; | |
5449 | ||
5450 | if (p->type == bfd_section_reloc_link_order) | |
5451 | { | |
5452 | r_extern = 0; | |
4587b578 | 5453 | if (bfd_is_abs_section (pr->u.section)) |
ec099b4b ILT |
5454 | r_index = N_ABS | N_EXT; |
5455 | else | |
5456 | { | |
5457 | BFD_ASSERT (pr->u.section->owner == finfo->output_bfd); | |
5458 | r_index = pr->u.section->target_index; | |
5459 | } | |
5460 | } | |
5461 | else | |
5462 | { | |
5463 | struct aout_link_hash_entry *h; | |
5464 | ||
5465 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); | |
5466 | r_extern = 1; | |
7ec49f91 ILT |
5467 | h = ((struct aout_link_hash_entry *) |
5468 | bfd_wrapped_link_hash_lookup (finfo->output_bfd, finfo->info, | |
5469 | pr->u.name, false, false, true)); | |
ec099b4b | 5470 | if (h != (struct aout_link_hash_entry *) NULL |
74942465 | 5471 | && h->indx >= 0) |
ec099b4b | 5472 | r_index = h->indx; |
74942465 ILT |
5473 | else if (h != NULL) |
5474 | { | |
5475 | /* We decided to strip this symbol, but it turns out that we | |
5476 | can't. Note that we lose the other and desc information | |
5477 | here. I don't think that will ever matter for a global | |
5478 | symbol. */ | |
5479 | h->indx = -2; | |
5480 | h->written = false; | |
5481 | if (! aout_link_write_other_symbol (h, (PTR) finfo)) | |
5482 | return false; | |
5483 | r_index = h->indx; | |
5484 | } | |
ec099b4b ILT |
5485 | else |
5486 | { | |
5487 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
5488 | (finfo->info, pr->u.name, (bfd *) NULL, | |
5489 | (asection *) NULL, (bfd_vma) 0))) | |
5490 | return false; | |
5491 | r_index = 0; | |
5492 | } | |
5493 | } | |
5494 | ||
5495 | howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc); | |
82b1edf7 | 5496 | if (howto == 0) |
ec099b4b ILT |
5497 | { |
5498 | bfd_set_error (bfd_error_bad_value); | |
5499 | return false; | |
5500 | } | |
5501 | ||
5502 | if (o == obj_textsec (finfo->output_bfd)) | |
5503 | reloff_ptr = &finfo->treloff; | |
5504 | else if (o == obj_datasec (finfo->output_bfd)) | |
5505 | reloff_ptr = &finfo->dreloff; | |
5506 | else | |
5507 | abort (); | |
5508 | ||
5509 | if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE) | |
5510 | { | |
f42fe159 | 5511 | #ifdef MY_put_reloc |
ae115e51 ILT |
5512 | MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto, |
5513 | &srel); | |
f42fe159 | 5514 | #else |
ae115e51 ILT |
5515 | { |
5516 | int r_pcrel; | |
5517 | int r_baserel; | |
5518 | int r_jmptable; | |
5519 | int r_relative; | |
5520 | int r_length; | |
5521 | ||
5522 | r_pcrel = howto->pc_relative; | |
5523 | r_baserel = (howto->type & 8) != 0; | |
5524 | r_jmptable = (howto->type & 16) != 0; | |
5525 | r_relative = (howto->type & 32) != 0; | |
5526 | r_length = howto->size; | |
5527 | ||
5528 | PUT_WORD (finfo->output_bfd, p->offset, srel.r_address); | |
64d5f5d0 | 5529 | if (bfd_header_big_endian (finfo->output_bfd)) |
ae115e51 ILT |
5530 | { |
5531 | srel.r_index[0] = r_index >> 16; | |
5532 | srel.r_index[1] = r_index >> 8; | |
5533 | srel.r_index[2] = r_index; | |
5534 | srel.r_type[0] = | |
5535 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
5536 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
5537 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
5538 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
5539 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
5540 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
5541 | } | |
5542 | else | |
5543 | { | |
5544 | srel.r_index[2] = r_index >> 16; | |
5545 | srel.r_index[1] = r_index >> 8; | |
5546 | srel.r_index[0] = r_index; | |
5547 | srel.r_type[0] = | |
5548 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
5549 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
5550 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
5551 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
5552 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
5553 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
5554 | } | |
5555 | } | |
f42fe159 | 5556 | #endif |
ec099b4b ILT |
5557 | rel_ptr = (PTR) &srel; |
5558 | ||
5559 | /* We have to write the addend into the object file, since | |
5560 | standard a.out relocs are in place. It would be more | |
5561 | reliable if we had the current contents of the file here, | |
5562 | rather than assuming zeroes, but we can't read the file since | |
5563 | it was opened using bfd_openw. */ | |
5564 | if (pr->addend != 0) | |
5565 | { | |
5566 | bfd_size_type size; | |
5567 | bfd_reloc_status_type r; | |
5568 | bfd_byte *buf; | |
5569 | boolean ok; | |
5570 | ||
5571 | size = bfd_get_reloc_size (howto); | |
e85e8bfe | 5572 | buf = (bfd_byte *) bfd_zmalloc (size); |
ec099b4b | 5573 | if (buf == (bfd_byte *) NULL) |
a9713b91 | 5574 | return false; |
34e9ffbc | 5575 | r = MY_relocate_contents (howto, finfo->output_bfd, |
ec099b4b ILT |
5576 | pr->addend, buf); |
5577 | switch (r) | |
5578 | { | |
5579 | case bfd_reloc_ok: | |
5580 | break; | |
5581 | default: | |
5582 | case bfd_reloc_outofrange: | |
5583 | abort (); | |
5584 | case bfd_reloc_overflow: | |
5585 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
5586 | (finfo->info, | |
5587 | (p->type == bfd_section_reloc_link_order | |
5588 | ? bfd_section_name (finfo->output_bfd, | |
5589 | pr->u.section) | |
5590 | : pr->u.name), | |
5591 | howto->name, pr->addend, (bfd *) NULL, | |
5592 | (asection *) NULL, (bfd_vma) 0))) | |
5593 | { | |
5594 | free (buf); | |
5595 | return false; | |
5596 | } | |
5597 | break; | |
5598 | } | |
5599 | ok = bfd_set_section_contents (finfo->output_bfd, o, | |
5600 | (PTR) buf, | |
5601 | (file_ptr) p->offset, | |
5602 | size); | |
5603 | free (buf); | |
5604 | if (! ok) | |
5605 | return false; | |
5606 | } | |
5607 | } | |
5608 | else | |
5609 | { | |
5610 | PUT_WORD (finfo->output_bfd, p->offset, erel.r_address); | |
5611 | ||
64d5f5d0 | 5612 | if (bfd_header_big_endian (finfo->output_bfd)) |
ec099b4b ILT |
5613 | { |
5614 | erel.r_index[0] = r_index >> 16; | |
5615 | erel.r_index[1] = r_index >> 8; | |
5616 | erel.r_index[2] = r_index; | |
5617 | erel.r_type[0] = | |
5618 | ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
5619 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
5620 | } | |
5621 | else | |
5622 | { | |
5623 | erel.r_index[2] = r_index >> 16; | |
5624 | erel.r_index[1] = r_index >> 8; | |
5625 | erel.r_index[0] = r_index; | |
5626 | erel.r_type[0] = | |
5627 | (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
5628 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
5629 | } | |
5630 | ||
5631 | PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend); | |
5632 | ||
5633 | rel_ptr = (PTR) &erel; | |
5634 | } | |
5635 | ||
5636 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 | |
5637 | || (bfd_write (rel_ptr, (bfd_size_type) 1, | |
5638 | obj_reloc_entry_size (finfo->output_bfd), | |
5639 | finfo->output_bfd) | |
5640 | != obj_reloc_entry_size (finfo->output_bfd))) | |
5641 | return false; | |
5642 | ||
5643 | *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd); | |
5644 | ||
5645 | /* Assert that the relocs have not run into the symbols, and that n | |
5646 | the text relocs have not run into the data relocs. */ | |
5647 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
5648 | && (reloff_ptr != &finfo->treloff | |
5649 | || (*reloff_ptr | |
5650 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
5651 | ||
5652 | return true; | |
5653 | } |