Commit | Line | Data |
---|---|---|
1f29e30b | 1 | /* BFD semi-generic back-end for a.out binaries. |
51fbf454 | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995 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 SC |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, 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 | ||
c618de01 SC |
120 | #define KEEPIT flags |
121 | #define KEEPITTYPE int | |
67c060c3 | 122 | |
a99c3d70 | 123 | #include <string.h> /* For strchr and friends */ |
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 *)); | |
0ee75d02 | 139 | |
4e41b5aa SC |
140 | /* |
141 | SUBSECTION | |
4c3721d5 | 142 | Relocations |
4e41b5aa SC |
143 | |
144 | DESCRIPTION | |
c188b0be | 145 | The file @file{aoutx.h} provides for both the @emph{standard} |
4e41b5aa SC |
146 | and @emph{extended} forms of a.out relocation records. |
147 | ||
c188b0be DM |
148 | The standard records contain only an |
149 | address, a symbol index, and a type field. The extended records | |
4e41b5aa | 150 | (used on 29ks and sparcs) also have a full integer for an |
c188b0be | 151 | addend. |
7ed4093a | 152 | |
6f715d66 | 153 | */ |
f42fe159 | 154 | #ifndef CTOR_TABLE_RELOC_HOWTO |
7ed4093a | 155 | #define CTOR_TABLE_RELOC_IDX 2 |
f42fe159 ILT |
156 | #define CTOR_TABLE_RELOC_HOWTO(BFD) ((obj_reloc_entry_size(BFD) == RELOC_EXT_SIZE \ |
157 | ? howto_table_ext : howto_table_std) \ | |
158 | + CTOR_TABLE_RELOC_IDX) | |
159 | #endif | |
160 | ||
161 | #ifndef MY_swap_std_reloc_in | |
162 | #define MY_swap_std_reloc_in NAME(aout,swap_std_reloc_in) | |
163 | #endif | |
164 | ||
165 | #ifndef MY_swap_std_reloc_out | |
166 | #define MY_swap_std_reloc_out NAME(aout,swap_std_reloc_out) | |
167 | #endif | |
67c060c3 | 168 | |
ce07dd7c KR |
169 | #define howto_table_ext NAME(aout,ext_howto_table) |
170 | #define howto_table_std NAME(aout,std_howto_table) | |
67c060c3 | 171 | |
c188b0be | 172 | reloc_howto_type howto_table_ext[] = |
7ed4093a | 173 | { |
4c3721d5 | 174 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */ |
2e235c93 ILT |
175 | HOWTO(RELOC_8, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", false, 0,0x000000ff, false), |
176 | HOWTO(RELOC_16, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", false, 0,0x0000ffff, false), | |
177 | HOWTO(RELOC_32, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", false, 0,0xffffffff, false), | |
178 | HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, complain_overflow_signed,0,"DISP8", false, 0,0x000000ff, false), | |
179 | HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, complain_overflow_signed,0,"DISP16", false, 0,0x0000ffff, false), | |
180 | HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, complain_overflow_signed,0,"DISP32", false, 0,0xffffffff, false), | |
181 | HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, complain_overflow_signed,0,"WDISP30", false, 0,0x3fffffff, false), | |
182 | HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, complain_overflow_signed,0,"WDISP22", false, 0,0x003fffff, false), | |
183 | HOWTO(RELOC_HI22, 10, 2, 22, false, 0, complain_overflow_bitfield,0,"HI22", false, 0,0x003fffff, false), | |
184 | HOWTO(RELOC_22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"22", false, 0,0x003fffff, false), | |
185 | HOWTO(RELOC_13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"13", false, 0,0x00001fff, false), | |
186 | HOWTO(RELOC_LO10, 0, 2, 10, false, 0, complain_overflow_dont,0,"LO10", false, 0,0x000003ff, false), | |
187 | HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, complain_overflow_bitfield,0,"SFA_BASE", false, 0,0xffffffff, false), | |
188 | HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, complain_overflow_bitfield,0,"SFA_OFF13",false, 0,0xffffffff, false), | |
189 | HOWTO(RELOC_BASE10, 0, 2, 16, false, 0, complain_overflow_bitfield,0,"BASE10", false, 0,0x0000ffff, false), | |
190 | HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"BASE13", false, 0,0x00001fff, false), | |
191 | HOWTO(RELOC_BASE22, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASE22", false, 0,0x00000000, false), | |
192 | HOWTO(RELOC_PC10, 0, 2, 10, false, 0, complain_overflow_bitfield,0,"PC10", false, 0,0x000003ff, false), | |
193 | HOWTO(RELOC_PC22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"PC22", false, 0,0x003fffff, false), | |
194 | HOWTO(RELOC_JMP_TBL,0, 2, 32, false, 0, complain_overflow_bitfield,0,"JMP_TBL", false, 0,0xffffffff, false), | |
195 | HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, complain_overflow_bitfield,0,"SEGOFF16", false, 0,0x00000000, false), | |
196 | HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"GLOB_DAT", false, 0,0x00000000, false), | |
197 | HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_SLOT", false, 0,0x00000000, false), | |
198 | HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false), | |
7ed4093a SC |
199 | }; |
200 | ||
201 | /* Convert standard reloc records to "arelent" format (incl byte swap). */ | |
202 | ||
ce07dd7c | 203 | reloc_howto_type howto_table_std[] = { |
4c3721d5 | 204 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */ |
c188b0be | 205 | HOWTO( 0, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", true, 0x000000ff,0x000000ff, false), |
2e235c93 ILT |
206 | HOWTO( 1, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", true, 0x0000ffff,0x0000ffff, false), |
207 | HOWTO( 2, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", true, 0xffffffff,0xffffffff, false), | |
c188b0be DM |
208 | HOWTO( 3, 0, 4, 64, false, 0, complain_overflow_bitfield,0,"64", true, 0xdeaddead,0xdeaddead, false), |
209 | HOWTO( 4, 0, 0, 8, true, 0, complain_overflow_signed, 0,"DISP8", true, 0x000000ff,0x000000ff, false), | |
210 | HOWTO( 5, 0, 1, 16, true, 0, complain_overflow_signed, 0,"DISP16", true, 0x0000ffff,0x0000ffff, false), | |
211 | HOWTO( 6, 0, 2, 32, true, 0, complain_overflow_signed, 0,"DISP32", true, 0xffffffff,0xffffffff, false), | |
212 | HOWTO( 7, 0, 4, 64, true, 0, complain_overflow_signed, 0,"DISP64", true, 0xfeedface,0xfeedface, false), | |
4852416e | 213 | HOWTO( 8, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"GOT_REL", false, 0,0x00000000, false), |
c188b0be DM |
214 | HOWTO( 9, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"BASE16", false,0xffffffff,0xffffffff, false), |
215 | HOWTO(10, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"BASE32", false,0xffffffff,0xffffffff, false), | |
cb9461ff JK |
216 | { -1 }, |
217 | { -1 }, | |
218 | { -1 }, | |
219 | { -1 }, | |
220 | { -1 }, | |
221 | HOWTO(16, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_TABLE", false, 0,0x00000000, false), | |
222 | { -1 }, | |
223 | { -1 }, | |
224 | { -1 }, | |
225 | { -1 }, | |
226 | { -1 }, | |
227 | { -1 }, | |
228 | { -1 }, | |
229 | { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, | |
230 | HOWTO(32, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false), | |
231 | { -1 }, | |
232 | { -1 }, | |
233 | { -1 }, | |
234 | { -1 }, | |
235 | { -1 }, | |
236 | { -1 }, | |
237 | { -1 }, | |
238 | HOWTO(40, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASEREL", false, 0,0x00000000, false), | |
7ed4093a SC |
239 | }; |
240 | ||
c188b0be DM |
241 | #define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0])) |
242 | ||
51fbf454 | 243 | reloc_howto_type * |
8eb5d4be JK |
244 | NAME(aout,reloc_type_lookup) (abfd,code) |
245 | bfd *abfd; | |
246 | bfd_reloc_code_real_type code; | |
214f8f23 KR |
247 | { |
248 | #define EXT(i,j) case i: return &howto_table_ext[j] | |
249 | #define STD(i,j) case i: return &howto_table_std[j] | |
250 | int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE; | |
251 | if (code == BFD_RELOC_CTOR) | |
252 | switch (bfd_get_arch_info (abfd)->bits_per_address) | |
253 | { | |
254 | case 32: | |
255 | code = BFD_RELOC_32; | |
256 | break; | |
ec099b4b ILT |
257 | case 64: |
258 | code = BFD_RELOC_64; | |
259 | break; | |
214f8f23 KR |
260 | } |
261 | if (ext) | |
262 | switch (code) | |
263 | { | |
264 | EXT (BFD_RELOC_32, 2); | |
265 | EXT (BFD_RELOC_HI22, 8); | |
266 | EXT (BFD_RELOC_LO10, 11); | |
267 | EXT (BFD_RELOC_32_PCREL_S2, 6); | |
c188b0be | 268 | EXT (BFD_RELOC_SPARC_WDISP22, 7); |
ec099b4b ILT |
269 | EXT (BFD_RELOC_SPARC13, 10); |
270 | EXT (BFD_RELOC_SPARC_BASE13, 15); | |
51fbf454 | 271 | default: return (reloc_howto_type *) NULL; |
214f8f23 KR |
272 | } |
273 | else | |
274 | /* std relocs */ | |
275 | switch (code) | |
276 | { | |
277 | STD (BFD_RELOC_16, 1); | |
278 | STD (BFD_RELOC_32, 2); | |
279 | STD (BFD_RELOC_8_PCREL, 4); | |
280 | STD (BFD_RELOC_16_PCREL, 5); | |
281 | STD (BFD_RELOC_32_PCREL, 6); | |
c188b0be DM |
282 | STD (BFD_RELOC_16_BASEREL, 9); |
283 | STD (BFD_RELOC_32_BASEREL, 10); | |
51fbf454 | 284 | default: return (reloc_howto_type *) NULL; |
214f8f23 | 285 | } |
214f8f23 | 286 | } |
7ed4093a | 287 | |
4e41b5aa SC |
288 | /* |
289 | SUBSECTION | |
4c3721d5 | 290 | Internal entry points |
4e41b5aa SC |
291 | |
292 | DESCRIPTION | |
c188b0be | 293 | @file{aoutx.h} exports several routines for accessing the |
4e41b5aa SC |
294 | contents of an a.out file, which are gathered and exported in |
295 | turn by various format specific files (eg sunos.c). | |
296 | ||
6f715d66 SC |
297 | */ |
298 | ||
4e41b5aa SC |
299 | /* |
300 | FUNCTION | |
c188b0be | 301 | aout_@var{size}_swap_exec_header_in |
4e41b5aa | 302 | |
fa2b89f1 | 303 | SYNOPSIS |
c188b0be | 304 | void aout_@var{size}_swap_exec_header_in, |
4e41b5aa SC |
305 | (bfd *abfd, |
306 | struct external_exec *raw_bytes, | |
307 | struct internal_exec *execp); | |
c188b0be DM |
308 | |
309 | DESCRIPTION | |
310 | Swap the information in an executable header @var{raw_bytes} taken | |
311 | from a raw byte stream memory image into the internal exec header | |
312 | structure @var{execp}. | |
6f715d66 | 313 | */ |
c188b0be | 314 | |
34dd8ba3 | 315 | #ifndef NAME_swap_exec_header_in |
7ed4093a | 316 | void |
8eb5d4be JK |
317 | NAME(aout,swap_exec_header_in) (abfd, raw_bytes, execp) |
318 | bfd *abfd; | |
319 | struct external_exec *raw_bytes; | |
320 | struct internal_exec *execp; | |
7ed4093a SC |
321 | { |
322 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
323 | ||
55c0061e FF |
324 | /* The internal_exec structure has some fields that are unused in this |
325 | configuration (IE for i960), so ensure that all such uninitialized | |
326 | fields are zero'd out. There are places where two of these structs | |
327 | are memcmp'd, and thus the contents do matter. */ | |
68241b2b | 328 | memset ((PTR) execp, 0, sizeof (struct internal_exec)); |
7ed4093a SC |
329 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
330 | execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); | |
331 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
332 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
333 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
334 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
335 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
336 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); | |
337 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
338 | } | |
34dd8ba3 JG |
339 | #define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in) |
340 | #endif | |
7ed4093a | 341 | |
4e41b5aa SC |
342 | /* |
343 | FUNCTION | |
c188b0be | 344 | aout_@var{size}_swap_exec_header_out |
4e41b5aa | 345 | |
fa2b89f1 | 346 | SYNOPSIS |
c188b0be | 347 | void aout_@var{size}_swap_exec_header_out |
6f715d66 SC |
348 | (bfd *abfd, |
349 | struct internal_exec *execp, | |
4e41b5aa | 350 | struct external_exec *raw_bytes); |
c188b0be DM |
351 | |
352 | DESCRIPTION | |
353 | Swap the information in an internal exec header structure | |
354 | @var{execp} into the buffer @var{raw_bytes} ready for writing to disk. | |
6f715d66 | 355 | */ |
7ed4093a | 356 | void |
8eb5d4be JK |
357 | NAME(aout,swap_exec_header_out) (abfd, execp, raw_bytes) |
358 | bfd *abfd; | |
359 | struct internal_exec *execp; | |
360 | struct external_exec *raw_bytes; | |
7ed4093a SC |
361 | { |
362 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
363 | ||
364 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ | |
365 | bfd_h_put_32 (abfd, execp->a_info , bytes->e_info); | |
366 | PUT_WORD (abfd, execp->a_text , bytes->e_text); | |
367 | PUT_WORD (abfd, execp->a_data , bytes->e_data); | |
368 | PUT_WORD (abfd, execp->a_bss , bytes->e_bss); | |
369 | PUT_WORD (abfd, execp->a_syms , bytes->e_syms); | |
370 | PUT_WORD (abfd, execp->a_entry , bytes->e_entry); | |
371 | PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); | |
372 | PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); | |
373 | } | |
374 | ||
ec6b18c4 | 375 | /* Make all the section for an a.out file. */ |
7ed4093a | 376 | |
ec6b18c4 ILT |
377 | boolean |
378 | NAME(aout,make_sections) (abfd) | |
379 | bfd *abfd; | |
380 | { | |
381 | if (obj_textsec (abfd) == (asection *) NULL | |
382 | && bfd_make_section (abfd, ".text") == (asection *) NULL) | |
383 | return false; | |
384 | if (obj_datasec (abfd) == (asection *) NULL | |
385 | && bfd_make_section (abfd, ".data") == (asection *) NULL) | |
386 | return false; | |
387 | if (obj_bsssec (abfd) == (asection *) NULL | |
388 | && bfd_make_section (abfd, ".bss") == (asection *) NULL) | |
389 | return false; | |
390 | return true; | |
391 | } | |
6f715d66 | 392 | |
4e41b5aa SC |
393 | /* |
394 | FUNCTION | |
c188b0be | 395 | aout_@var{size}_some_aout_object_p |
6f715d66 | 396 | |
fa2b89f1 | 397 | SYNOPSIS |
2f3508ad | 398 | const bfd_target *aout_@var{size}_some_aout_object_p |
6f715d66 | 399 | (bfd *abfd, |
2f3508ad | 400 | const bfd_target *(*callback_to_real_object_p)()); |
c188b0be DM |
401 | |
402 | DESCRIPTION | |
403 | Some a.out variant thinks that the file open in @var{abfd} | |
404 | checking is an a.out file. Do some more checking, and set up | |
405 | for access if it really is. Call back to the calling | |
406 | environment's "finish up" function just before returning, to | |
407 | handle any last-minute setup. | |
6f715d66 | 408 | */ |
c188b0be | 409 | |
2f3508ad | 410 | const bfd_target * |
8eb5d4be JK |
411 | NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p) |
412 | bfd *abfd; | |
413 | struct internal_exec *execp; | |
2f3508ad | 414 | const bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *)); |
7ed4093a | 415 | { |
214f8f23 | 416 | struct aout_data_struct *rawptr, *oldrawptr; |
2f3508ad | 417 | const bfd_target *result; |
7ed4093a | 418 | |
6db82ea7 | 419 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (struct aout_data_struct )); |
7ed4093a | 420 | if (rawptr == NULL) { |
68241b2b | 421 | bfd_set_error (bfd_error_no_memory); |
7ed4093a SC |
422 | return 0; |
423 | } | |
424 | ||
214f8f23 | 425 | oldrawptr = abfd->tdata.aout_data; |
6db82ea7 | 426 | abfd->tdata.aout_data = rawptr; |
ebd24135 ILT |
427 | |
428 | /* Copy the contents of the old tdata struct. | |
429 | In particular, we want the subformat, since for hpux it was set in | |
430 | hp300hpux.c:swap_exec_header_in and will be used in | |
431 | hp300hpux.c:callback. */ | |
432 | if (oldrawptr != NULL) | |
433 | *abfd->tdata.aout_data = *oldrawptr; | |
434 | ||
6db82ea7 SC |
435 | abfd->tdata.aout_data->a.hdr = &rawptr->e; |
436 | *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */ | |
437 | execp = abfd->tdata.aout_data->a.hdr; | |
7ed4093a SC |
438 | |
439 | /* Set the file flags */ | |
440 | abfd->flags = NO_FLAGS; | |
441 | if (execp->a_drsize || execp->a_trsize) | |
442 | abfd->flags |= HAS_RELOC; | |
e6e265ce | 443 | /* Setting of EXEC_P has been deferred to the bottom of this function */ |
c188b0be | 444 | if (execp->a_syms) |
7ed4093a | 445 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; |
e68de5d5 ILT |
446 | if (N_DYNAMIC(*execp)) |
447 | abfd->flags |= DYNAMIC; | |
7ed4093a | 448 | |
ce07dd7c KR |
449 | if (N_MAGIC (*execp) == ZMAGIC) |
450 | { | |
f5419a59 ILT |
451 | abfd->flags |= D_PAGED | WP_TEXT; |
452 | adata (abfd).magic = z_magic; | |
453 | } | |
454 | else if (N_MAGIC (*execp) == QMAGIC) | |
455 | { | |
456 | abfd->flags |= D_PAGED | WP_TEXT; | |
457 | adata (abfd).magic = z_magic; | |
458 | adata (abfd).subformat = q_magic_format; | |
ce07dd7c KR |
459 | } |
460 | else if (N_MAGIC (*execp) == NMAGIC) | |
461 | { | |
462 | abfd->flags |= WP_TEXT; | |
f5419a59 | 463 | adata (abfd).magic = n_magic; |
ce07dd7c | 464 | } |
7b024321 ILT |
465 | else if (N_MAGIC (*execp) == OMAGIC |
466 | || N_MAGIC (*execp) == BMAGIC) | |
f5419a59 | 467 | adata (abfd).magic = o_magic; |
ce07dd7c | 468 | else |
f5419a59 ILT |
469 | { |
470 | /* Should have been checked with N_BADMAG before this routine | |
471 | was called. */ | |
472 | abort (); | |
473 | } | |
7ed4093a SC |
474 | |
475 | bfd_get_start_address (abfd) = execp->a_entry; | |
476 | ||
477 | obj_aout_symbols (abfd) = (aout_symbol_type *)NULL; | |
478 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); | |
479 | ||
7ed4093a SC |
480 | /* The default relocation entry size is that of traditional V7 Unix. */ |
481 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
482 | ||
7b02b4ed JG |
483 | /* The default symbol entry size is that of traditional Unix. */ |
484 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; | |
485 | ||
728472f1 ILT |
486 | obj_aout_external_syms (abfd) = NULL; |
487 | obj_aout_external_strings (abfd) = NULL; | |
488 | obj_aout_sym_hashes (abfd) = NULL; | |
489 | ||
ec6b18c4 ILT |
490 | if (! NAME(aout,make_sections) (abfd)) |
491 | return NULL; | |
7ed4093a | 492 | |
6db82ea7 SC |
493 | obj_datasec (abfd)->_raw_size = execp->a_data; |
494 | obj_bsssec (abfd)->_raw_size = execp->a_bss; | |
7ed4093a | 495 | |
0ee75d02 | 496 | obj_textsec (abfd)->flags = |
11676adc | 497 | (execp->a_trsize != 0 |
0ee75d02 ILT |
498 | ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) |
499 | : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); | |
500 | obj_datasec (abfd)->flags = | |
11676adc | 501 | (execp->a_drsize != 0 |
0ee75d02 ILT |
502 | ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) |
503 | : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); | |
7ed4093a SC |
504 | obj_bsssec (abfd)->flags = SEC_ALLOC; |
505 | ||
506 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
98d43107 JG |
507 | /* The common code can't fill in these things because they depend |
508 | on either the start address of the text segment, the rounding | |
9783e04a | 509 | up of virtual addresses between segments, or the starting file |
98d43107 JG |
510 | position of the text segment -- all of which varies among different |
511 | versions of a.out. */ | |
512 | ||
c188b0be | 513 | /* Call back to the format-dependent code to fill in the rest of the |
7ed4093a SC |
514 | fields and do any further cleanup. Things that should be filled |
515 | in by the callback: */ | |
516 | ||
517 | struct exec *execp = exec_hdr (abfd); | |
518 | ||
98d43107 | 519 | obj_textsec (abfd)->size = N_TXTSIZE(*execp); |
6db82ea7 | 520 | obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp); |
98d43107 JG |
521 | /* data and bss are already filled in since they're so standard */ |
522 | ||
7ed4093a | 523 | /* The virtual memory addresses of the sections */ |
7ed4093a | 524 | obj_textsec (abfd)->vma = N_TXTADDR(*execp); |
98d43107 JG |
525 | obj_datasec (abfd)->vma = N_DATADDR(*execp); |
526 | obj_bsssec (abfd)->vma = N_BSSADDR(*execp); | |
7ed4093a SC |
527 | |
528 | /* The file offsets of the sections */ | |
529 | obj_textsec (abfd)->filepos = N_TXTOFF(*execp); | |
530 | obj_datasec (abfd)->filepos = N_DATOFF(*execp); | |
531 | ||
532 | /* The file offsets of the relocation info */ | |
533 | obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); | |
534 | obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); | |
535 | ||
536 | /* The file offsets of the string table and symbol table. */ | |
537 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
538 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
539 | ||
7ed4093a SC |
540 | /* Determine the architecture and machine type of the object file. */ |
541 | switch (N_MACHTYPE (*exec_hdr (abfd))) { | |
542 | default: | |
543 | abfd->obj_arch = bfd_arch_obscure; | |
544 | break; | |
545 | } | |
546 | ||
7b02b4ed JG |
547 | adata(abfd)->page_size = PAGE_SIZE; |
548 | adata(abfd)->segment_size = SEGMENT_SIZE; | |
549 | adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
550 | ||
7ed4093a SC |
551 | return abfd->xvec; |
552 | ||
553 | /* The architecture is encoded in various ways in various a.out variants, | |
554 | or is not encoded at all in some of them. The relocation size depends | |
555 | on the architecture and the a.out variant. Finally, the return value | |
556 | is the bfd_target vector in use. If an error occurs, return zero and | |
557 | set bfd_error to the appropriate error code. | |
c188b0be | 558 | |
7ed4093a SC |
559 | Formats such as b.out, which have additional fields in the a.out |
560 | header, should cope with them in this callback as well. */ | |
561 | #endif /* DOCUMENTATION */ | |
562 | ||
e6e265ce JG |
563 | result = (*callback_to_real_object_p)(abfd); |
564 | ||
565 | /* Now that the segment addresses have been worked out, take a better | |
566 | guess at whether the file is executable. If the entry point | |
567 | is within the text segment, assume it is. (This makes files | |
568 | executable even if their entry point address is 0, as long as | |
6c97aedf | 569 | their text starts at zero.). */ |
e6e265ce | 570 | if ((execp->a_entry >= obj_textsec(abfd)->vma) && |
6db82ea7 | 571 | (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size)) |
e6e265ce | 572 | abfd->flags |= EXEC_P; |
6c97aedf ILT |
573 | #ifdef STAT_FOR_EXEC |
574 | else | |
575 | { | |
576 | struct stat stat_buf; | |
577 | ||
578 | /* The original heuristic doesn't work in some important cases. | |
579 | The a.out file has no information about the text start | |
580 | address. For files (like kernels) linked to non-standard | |
581 | addresses (ld -Ttext nnn) the entry point may not be between | |
582 | the default text start (obj_textsec(abfd)->vma) and | |
583 | (obj_textsec(abfd)->vma) + text size. This is not just a mach | |
584 | issue. Many kernels are loaded at non standard addresses. */ | |
585 | if (abfd->iostream | |
586 | && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0) | |
587 | && ((stat_buf.st_mode & 0111) != 0)) | |
588 | abfd->flags |= EXEC_P; | |
589 | } | |
590 | #endif /* STAT_FOR_EXEC */ | |
591 | ||
214f8f23 KR |
592 | if (result) |
593 | { | |
1f29e30b | 594 | #if 0 /* These should be set correctly anyways. */ |
214f8f23 KR |
595 | abfd->sections = obj_textsec (abfd); |
596 | obj_textsec (abfd)->next = obj_datasec (abfd); | |
597 | obj_datasec (abfd)->next = obj_bsssec (abfd); | |
1f29e30b | 598 | #endif |
214f8f23 KR |
599 | } |
600 | else | |
601 | { | |
602 | free (rawptr); | |
603 | abfd->tdata.aout_data = oldrawptr; | |
604 | } | |
e6e265ce | 605 | return result; |
7ed4093a SC |
606 | } |
607 | ||
4e41b5aa SC |
608 | /* |
609 | FUNCTION | |
c188b0be | 610 | aout_@var{size}_mkobject |
6f715d66 | 611 | |
fa2b89f1 | 612 | SYNOPSIS |
c188b0be DM |
613 | boolean aout_@var{size}_mkobject, (bfd *abfd); |
614 | ||
615 | DESCRIPTION | |
616 | Initialize BFD @var{abfd} for use with a.out files. | |
6f715d66 | 617 | */ |
7ed4093a SC |
618 | |
619 | boolean | |
8eb5d4be JK |
620 | NAME(aout,mkobject) (abfd) |
621 | bfd *abfd; | |
7ed4093a | 622 | { |
6db82ea7 | 623 | struct aout_data_struct *rawptr; |
7ed4093a | 624 | |
68241b2b | 625 | bfd_set_error (bfd_error_system_call); |
7ed4093a SC |
626 | |
627 | /* Use an intermediate variable for clarity */ | |
2e235c93 | 628 | rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct )); |
c188b0be | 629 | |
7ed4093a | 630 | if (rawptr == NULL) { |
68241b2b | 631 | bfd_set_error (bfd_error_no_memory); |
7ed4093a SC |
632 | return false; |
633 | } | |
c188b0be | 634 | |
6db82ea7 | 635 | abfd->tdata.aout_data = rawptr; |
7ed4093a | 636 | exec_hdr (abfd) = &(rawptr->e); |
c188b0be | 637 | |
7ed4093a SC |
638 | obj_textsec (abfd) = (asection *)NULL; |
639 | obj_datasec (abfd) = (asection *)NULL; | |
640 | obj_bsssec (abfd) = (asection *)NULL; | |
c188b0be | 641 | |
7ed4093a SC |
642 | return true; |
643 | } | |
644 | ||
6f715d66 | 645 | |
4e41b5aa SC |
646 | /* |
647 | FUNCTION | |
c188b0be DM |
648 | aout_@var{size}_machine_type |
649 | ||
650 | SYNOPSIS | |
651 | enum machine_type aout_@var{size}_machine_type | |
652 | (enum bfd_architecture arch, | |
653 | unsigned long machine)); | |
6f715d66 | 654 | |
4e41b5aa SC |
655 | DESCRIPTION |
656 | Keep track of machine architecture and machine type for | |
c188b0be DM |
657 | a.out's. Return the <<machine_type>> for a particular |
658 | architecture and machine, or <<M_UNKNOWN>> if that exact architecture | |
659 | and machine can't be represented in a.out format. | |
7ed4093a | 660 | |
4e41b5aa | 661 | If the architecture is understood, machine type 0 (default) |
c188b0be | 662 | is always understood. |
6f715d66 | 663 | */ |
7ed4093a SC |
664 | |
665 | enum machine_type | |
9ae74960 | 666 | NAME(aout,machine_type) (arch, machine, unknown) |
8eb5d4be JK |
667 | enum bfd_architecture arch; |
668 | unsigned long machine; | |
9ae74960 | 669 | boolean *unknown; |
7ed4093a SC |
670 | { |
671 | enum machine_type arch_flags; | |
c188b0be | 672 | |
7ed4093a | 673 | arch_flags = M_UNKNOWN; |
9ae74960 | 674 | *unknown = true; |
c188b0be | 675 | |
7ed4093a SC |
676 | switch (arch) { |
677 | case bfd_arch_sparc: | |
678 | if (machine == 0) arch_flags = M_SPARC; | |
679 | break; | |
c188b0be | 680 | |
7ed4093a SC |
681 | case bfd_arch_m68k: |
682 | switch (machine) { | |
683 | case 0: arch_flags = M_68010; break; | |
9ae74960 | 684 | case 68000: arch_flags = M_UNKNOWN; *unknown = false; break; |
7ed4093a SC |
685 | case 68010: arch_flags = M_68010; break; |
686 | case 68020: arch_flags = M_68020; break; | |
687 | default: arch_flags = M_UNKNOWN; break; | |
688 | } | |
689 | break; | |
c188b0be | 690 | |
7ed4093a SC |
691 | case bfd_arch_i386: |
692 | if (machine == 0) arch_flags = M_386; | |
693 | break; | |
c188b0be | 694 | |
7ed4093a SC |
695 | case bfd_arch_a29k: |
696 | if (machine == 0) arch_flags = M_29K; | |
697 | break; | |
c188b0be | 698 | |
204ba9e3 ILT |
699 | case bfd_arch_arm: |
700 | if (machine == 0) arch_flags = M_ARM; | |
701 | break; | |
702 | ||
5cd3dcff KR |
703 | case bfd_arch_mips: |
704 | switch (machine) { | |
705 | case 0: | |
706 | case 2000: | |
707 | case 3000: arch_flags = M_MIPS1; break; | |
708 | case 4000: | |
709 | case 4400: | |
710 | case 6000: arch_flags = M_MIPS2; break; | |
711 | default: arch_flags = M_UNKNOWN; break; | |
712 | } | |
713 | break; | |
714 | ||
f42fe159 ILT |
715 | case bfd_arch_ns32k: |
716 | switch (machine) { | |
717 | case 0: arch_flags = M_NS32532; break; | |
718 | case 32032: arch_flags = M_NS32032; break; | |
719 | case 32532: arch_flags = M_NS32532; break; | |
720 | default: arch_flags = M_UNKNOWN; break; | |
721 | } | |
722 | break; | |
723 | ||
82b1edf7 KR |
724 | case bfd_arch_vax: |
725 | *unknown = false; | |
726 | break; | |
727 | ||
728 | /* start-sanitize-rce */ | |
729 | case bfd_arch_rce: | |
730 | arch_flags = M_RCE; | |
731 | break; | |
732 | /* end-sanitize-rce */ | |
733 | ||
7ed4093a SC |
734 | default: |
735 | arch_flags = M_UNKNOWN; | |
7ed4093a | 736 | } |
9ae74960 ILT |
737 | |
738 | if (arch_flags != M_UNKNOWN) | |
739 | *unknown = false; | |
740 | ||
7ed4093a SC |
741 | return arch_flags; |
742 | } | |
743 | ||
9e2dad8e | 744 | |
4e41b5aa SC |
745 | /* |
746 | FUNCTION | |
c188b0be | 747 | aout_@var{size}_set_arch_mach |
6f715d66 | 748 | |
fa2b89f1 | 749 | SYNOPSIS |
c188b0be | 750 | boolean aout_@var{size}_set_arch_mach, |
6f715d66 | 751 | (bfd *, |
c188b0be | 752 | enum bfd_architecture arch, |
6f715d66 | 753 | unsigned long machine)); |
c188b0be DM |
754 | |
755 | DESCRIPTION | |
756 | Set the architecture and the machine of the BFD @var{abfd} to the | |
757 | values @var{arch} and @var{machine}. Verify that @var{abfd}'s format | |
758 | can support the architecture required. | |
6f715d66 SC |
759 | */ |
760 | ||
7ed4093a | 761 | boolean |
8eb5d4be JK |
762 | NAME(aout,set_arch_mach) (abfd, arch, machine) |
763 | bfd *abfd; | |
764 | enum bfd_architecture arch; | |
765 | unsigned long machine; | |
7ed4093a | 766 | { |
2e235c93 ILT |
767 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) |
768 | return false; | |
769 | ||
9ae74960 ILT |
770 | if (arch != bfd_arch_unknown) |
771 | { | |
772 | boolean unknown; | |
773 | ||
774 | NAME(aout,machine_type) (arch, machine, &unknown); | |
775 | if (unknown) | |
776 | return false; | |
777 | } | |
ce07dd7c | 778 | |
214f8f23 KR |
779 | /* Determine the size of a relocation entry */ |
780 | switch (arch) { | |
781 | case bfd_arch_sparc: | |
782 | case bfd_arch_a29k: | |
5cd3dcff | 783 | case bfd_arch_mips: |
214f8f23 KR |
784 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; |
785 | break; | |
786 | default: | |
787 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
788 | break; | |
789 | } | |
790 | ||
2768b3f7 | 791 | return (*aout_backend_info(abfd)->set_sizes) (abfd); |
7ed4093a | 792 | } |
7ed4093a | 793 | |
4c3721d5 ILT |
794 | static void |
795 | adjust_o_magic (abfd, execp) | |
796 | bfd *abfd; | |
797 | struct internal_exec *execp; | |
798 | { | |
799 | file_ptr pos = adata (abfd).exec_bytes_size; | |
800 | bfd_vma vma = 0; | |
801 | int pad = 0; | |
802 | ||
803 | /* Text. */ | |
804 | obj_textsec(abfd)->filepos = pos; | |
74942465 ILT |
805 | if (!obj_textsec(abfd)->user_set_vma) |
806 | obj_textsec(abfd)->vma = vma; | |
807 | else | |
808 | vma = obj_textsec(abfd)->vma; | |
809 | ||
4c3721d5 ILT |
810 | pos += obj_textsec(abfd)->_raw_size; |
811 | vma += obj_textsec(abfd)->_raw_size; | |
812 | ||
813 | /* Data. */ | |
814 | if (!obj_datasec(abfd)->user_set_vma) | |
815 | { | |
816 | #if 0 /* ?? Does alignment in the file image really matter? */ | |
817 | pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma; | |
818 | #endif | |
819 | obj_textsec(abfd)->_raw_size += pad; | |
820 | pos += pad; | |
821 | vma += pad; | |
822 | obj_datasec(abfd)->vma = vma; | |
823 | } | |
82b1edf7 KR |
824 | else |
825 | vma = obj_datasec(abfd)->vma; | |
4c3721d5 ILT |
826 | obj_datasec(abfd)->filepos = pos; |
827 | pos += obj_datasec(abfd)->_raw_size; | |
828 | vma += obj_datasec(abfd)->_raw_size; | |
829 | ||
830 | /* BSS. */ | |
831 | if (!obj_bsssec(abfd)->user_set_vma) | |
832 | { | |
833 | #if 0 | |
834 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; | |
835 | #endif | |
836 | obj_datasec(abfd)->_raw_size += pad; | |
837 | pos += pad; | |
838 | vma += pad; | |
839 | obj_bsssec(abfd)->vma = vma; | |
840 | } | |
f4945271 ILT |
841 | else |
842 | { | |
843 | /* The VMA of the .bss section is set by the the VMA of the | |
844 | .data section plus the size of the .data section. We may | |
845 | need to add padding bytes to make this true. */ | |
846 | pad = obj_bsssec (abfd)->vma - vma; | |
847 | if (pad > 0) | |
848 | { | |
849 | obj_datasec (abfd)->_raw_size += pad; | |
850 | pos += pad; | |
851 | } | |
852 | } | |
4c3721d5 ILT |
853 | obj_bsssec(abfd)->filepos = pos; |
854 | ||
855 | /* Fix up the exec header. */ | |
856 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
857 | execp->a_data = obj_datasec(abfd)->_raw_size; | |
858 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
859 | N_SET_MAGIC (*execp, OMAGIC); | |
860 | } | |
861 | ||
862 | static void | |
863 | adjust_z_magic (abfd, execp) | |
864 | bfd *abfd; | |
865 | struct internal_exec *execp; | |
866 | { | |
867 | bfd_size_type data_pad, text_pad; | |
868 | file_ptr text_end; | |
869 | CONST struct aout_backend_data *abdp; | |
870 | int ztih; /* Nonzero if text includes exec header. */ | |
4c3721d5 ILT |
871 | |
872 | abdp = aout_backend_info (abfd); | |
873 | ||
874 | /* Text. */ | |
0630aba5 ILT |
875 | ztih = (abdp != NULL |
876 | && (abdp->text_includes_header | |
877 | || obj_aout_subformat (abfd) == q_magic_format)); | |
4c3721d5 ILT |
878 | obj_textsec(abfd)->filepos = (ztih |
879 | ? adata(abfd).exec_bytes_size | |
0630aba5 | 880 | : adata(abfd).zmagic_disk_block_size); |
4c3721d5 | 881 | if (! obj_textsec(abfd)->user_set_vma) |
e1f99f60 ILT |
882 | { |
883 | /* ?? Do we really need to check for relocs here? */ | |
884 | obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC) | |
885 | ? 0 | |
886 | : (ztih | |
887 | ? (abdp->default_text_vma | |
888 | + adata(abfd).exec_bytes_size) | |
889 | : abdp->default_text_vma)); | |
890 | text_pad = 0; | |
891 | } | |
892 | else | |
893 | { | |
894 | /* The .text section is being loaded at an unusual address. We | |
895 | may need to pad it such that the .data section starts at a page | |
896 | boundary. */ | |
897 | if (ztih) | |
898 | text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma) | |
899 | & (adata (abfd).page_size - 1)); | |
900 | else | |
901 | text_pad = ((- obj_textsec (abfd)->vma) | |
902 | & (adata (abfd).page_size - 1)); | |
903 | } | |
904 | ||
4c3721d5 | 905 | /* Find start of data. */ |
0630aba5 ILT |
906 | if (ztih) |
907 | { | |
908 | text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size; | |
e1f99f60 | 909 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
0630aba5 ILT |
910 | } |
911 | else | |
912 | { | |
913 | /* Note that if page_size == zmagic_disk_block_size, then | |
914 | filepos == page_size, and this case is the same as the ztih | |
915 | case. */ | |
916 | text_end = obj_textsec (abfd)->_raw_size; | |
e1f99f60 | 917 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
0630aba5 ILT |
918 | text_end += obj_textsec (abfd)->filepos; |
919 | } | |
4c3721d5 ILT |
920 | obj_textsec(abfd)->_raw_size += text_pad; |
921 | text_end += text_pad; | |
922 | ||
923 | /* Data. */ | |
924 | if (!obj_datasec(abfd)->user_set_vma) | |
925 | { | |
926 | bfd_vma vma; | |
927 | vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size; | |
928 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
929 | } | |
4c3721d5 ILT |
930 | if (abdp && abdp->zmagic_mapped_contiguous) |
931 | { | |
932 | text_pad = (obj_datasec(abfd)->vma | |
933 | - obj_textsec(abfd)->vma | |
934 | - obj_textsec(abfd)->_raw_size); | |
935 | obj_textsec(abfd)->_raw_size += text_pad; | |
936 | } | |
937 | obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos | |
938 | + obj_textsec(abfd)->_raw_size); | |
939 | ||
940 | /* Fix up exec header while we're at it. */ | |
941 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
942 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) | |
943 | execp->a_text += adata(abfd).exec_bytes_size; | |
f5419a59 ILT |
944 | if (obj_aout_subformat (abfd) == q_magic_format) |
945 | N_SET_MAGIC (*execp, QMAGIC); | |
946 | else | |
947 | N_SET_MAGIC (*execp, ZMAGIC); | |
5330499f | 948 | |
4c3721d5 | 949 | /* Spec says data section should be rounded up to page boundary. */ |
4c3721d5 ILT |
950 | obj_datasec(abfd)->_raw_size |
951 | = align_power (obj_datasec(abfd)->_raw_size, | |
952 | obj_bsssec(abfd)->alignment_power); | |
953 | execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size, | |
954 | adata(abfd).page_size); | |
955 | data_pad = execp->a_data - obj_datasec(abfd)->_raw_size; | |
956 | ||
957 | /* BSS. */ | |
958 | if (!obj_bsssec(abfd)->user_set_vma) | |
959 | obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma | |
960 | + obj_datasec(abfd)->_raw_size); | |
5330499f DM |
961 | /* If the BSS immediately follows the data section and extra space |
962 | in the page is left after the data section, fudge data | |
963 | in the header so that the bss section looks smaller by that | |
964 | amount. We'll start the bss section there, and lie to the OS. | |
965 | (Note that a linker script, as well as the above assignment, | |
966 | could have explicitly set the BSS vma to immediately follow | |
967 | the data section.) */ | |
968 | if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power) | |
969 | == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size) | |
970 | execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 : | |
971 | obj_bsssec(abfd)->_raw_size - data_pad; | |
972 | else | |
973 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
4c3721d5 ILT |
974 | } |
975 | ||
976 | static void | |
977 | adjust_n_magic (abfd, execp) | |
978 | bfd *abfd; | |
979 | struct internal_exec *execp; | |
980 | { | |
981 | file_ptr pos = adata(abfd).exec_bytes_size; | |
982 | bfd_vma vma = 0; | |
983 | int pad; | |
984 | ||
985 | /* Text. */ | |
986 | obj_textsec(abfd)->filepos = pos; | |
987 | if (!obj_textsec(abfd)->user_set_vma) | |
988 | obj_textsec(abfd)->vma = vma; | |
989 | else | |
990 | vma = obj_textsec(abfd)->vma; | |
991 | pos += obj_textsec(abfd)->_raw_size; | |
992 | vma += obj_textsec(abfd)->_raw_size; | |
993 | ||
994 | /* Data. */ | |
995 | obj_datasec(abfd)->filepos = pos; | |
996 | if (!obj_datasec(abfd)->user_set_vma) | |
997 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
998 | vma = obj_datasec(abfd)->vma; | |
999 | ||
1000 | /* Since BSS follows data immediately, see if it needs alignment. */ | |
1001 | vma += obj_datasec(abfd)->_raw_size; | |
1002 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; | |
1003 | obj_datasec(abfd)->_raw_size += pad; | |
1004 | pos += obj_datasec(abfd)->_raw_size; | |
1005 | ||
1006 | /* BSS. */ | |
1007 | if (!obj_bsssec(abfd)->user_set_vma) | |
1008 | obj_bsssec(abfd)->vma = vma; | |
1009 | else | |
1010 | vma = obj_bsssec(abfd)->vma; | |
1011 | ||
1012 | /* Fix up exec header. */ | |
1013 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
1014 | execp->a_data = obj_datasec(abfd)->_raw_size; | |
1015 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
1016 | N_SET_MAGIC (*execp, NMAGIC); | |
1017 | } | |
1018 | ||
ce07dd7c | 1019 | boolean |
8eb5d4be JK |
1020 | NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end) |
1021 | bfd *abfd; | |
1022 | bfd_size_type *text_size; | |
1023 | file_ptr *text_end; | |
ce07dd7c KR |
1024 | { |
1025 | struct internal_exec *execp = exec_hdr (abfd); | |
4c3721d5 | 1026 | |
ec6b18c4 ILT |
1027 | if (! NAME(aout,make_sections) (abfd)) |
1028 | return false; | |
1029 | ||
f5419a59 ILT |
1030 | if (adata(abfd).magic != undecided_magic) |
1031 | return true; | |
4c3721d5 | 1032 | |
c188b0be | 1033 | obj_textsec(abfd)->_raw_size = |
ce07dd7c KR |
1034 | align_power(obj_textsec(abfd)->_raw_size, |
1035 | obj_textsec(abfd)->alignment_power); | |
1036 | ||
1037 | *text_size = obj_textsec (abfd)->_raw_size; | |
1038 | /* Rule (heuristic) for when to pad to a new page. Note that there | |
4c3721d5 ILT |
1039 | are (at least) two ways demand-paged (ZMAGIC) files have been |
1040 | handled. Most Berkeley-based systems start the text segment at | |
1041 | (PAGE_SIZE). However, newer versions of SUNOS start the text | |
1042 | segment right after the exec header; the latter is counted in the | |
1043 | text segment size, and is paged in by the kernel with the rest of | |
1044 | the text. */ | |
ce07dd7c KR |
1045 | |
1046 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1047 | to understand enough to implement it. Better would probably be to go | |
1048 | right from BFD flags to alignment/positioning characteristics. But the | |
1049 | old code was sloppy enough about handling the flags, and had enough | |
1050 | other magic, that it was a little hard for me to understand. I think | |
1051 | I understand it better now, but I haven't time to do the cleanup this | |
1052 | minute. */ | |
4c3721d5 ILT |
1053 | |
1054 | if (abfd->flags & D_PAGED) | |
1055 | /* Whether or not WP_TEXT is set -- let D_PAGED override. */ | |
4c3721d5 ILT |
1056 | adata(abfd).magic = z_magic; |
1057 | else if (abfd->flags & WP_TEXT) | |
1058 | adata(abfd).magic = n_magic; | |
1059 | else | |
1060 | adata(abfd).magic = o_magic; | |
ce07dd7c KR |
1061 | |
1062 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1063 | #if __GNUC__ >= 2 | |
1064 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1065 | ({ char *str; | |
1066 | switch (adata(abfd).magic) { | |
1067 | case n_magic: str = "NMAGIC"; break; | |
1068 | case o_magic: str = "OMAGIC"; break; | |
1069 | case z_magic: str = "ZMAGIC"; break; | |
1070 | default: abort (); | |
1071 | } | |
1072 | str; | |
1073 | }), | |
4c3721d5 ILT |
1074 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, |
1075 | obj_textsec(abfd)->alignment_power, | |
1076 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, | |
1077 | obj_datasec(abfd)->alignment_power, | |
1078 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size, | |
1079 | obj_bsssec(abfd)->alignment_power); | |
ce07dd7c KR |
1080 | #endif |
1081 | #endif | |
1082 | ||
1083 | switch (adata(abfd).magic) | |
1084 | { | |
1085 | case o_magic: | |
4c3721d5 | 1086 | adjust_o_magic (abfd, execp); |
ce07dd7c KR |
1087 | break; |
1088 | case z_magic: | |
4c3721d5 | 1089 | adjust_z_magic (abfd, execp); |
ce07dd7c KR |
1090 | break; |
1091 | case n_magic: | |
4c3721d5 | 1092 | adjust_n_magic (abfd, execp); |
ce07dd7c KR |
1093 | break; |
1094 | default: | |
1095 | abort (); | |
1096 | } | |
4c3721d5 | 1097 | |
ce07dd7c KR |
1098 | #ifdef BFD_AOUT_DEBUG |
1099 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
4c3721d5 ILT |
1100 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, |
1101 | obj_textsec(abfd)->filepos, | |
1102 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, | |
1103 | obj_datasec(abfd)->filepos, | |
ce07dd7c KR |
1104 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size); |
1105 | #endif | |
4c3721d5 | 1106 | |
d047d16a | 1107 | return true; |
ce07dd7c KR |
1108 | } |
1109 | ||
4e41b5aa SC |
1110 | /* |
1111 | FUNCTION | |
c188b0be | 1112 | aout_@var{size}_new_section_hook |
4e41b5aa | 1113 | |
fa2b89f1 | 1114 | SYNOPSIS |
c188b0be | 1115 | boolean aout_@var{size}_new_section_hook, |
9e2dad8e JG |
1116 | (bfd *abfd, |
1117 | asection *newsect)); | |
c188b0be DM |
1118 | |
1119 | DESCRIPTION | |
1120 | Called by the BFD in response to a @code{bfd_make_section} | |
1121 | request. | |
6f715d66 | 1122 | */ |
7ed4093a | 1123 | boolean |
8eb5d4be JK |
1124 | NAME(aout,new_section_hook) (abfd, newsect) |
1125 | bfd *abfd; | |
1126 | asection *newsect; | |
7ed4093a | 1127 | { |
6db82ea7 SC |
1128 | /* align to double at least */ |
1129 | newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; | |
3f7607af | 1130 | |
c188b0be DM |
1131 | |
1132 | if (bfd_get_format (abfd) == bfd_object) | |
6db82ea7 SC |
1133 | { |
1134 | if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) { | |
1135 | obj_textsec(abfd)= newsect; | |
e48f985c | 1136 | newsect->target_index = N_TEXT; |
6db82ea7 SC |
1137 | return true; |
1138 | } | |
c188b0be | 1139 | |
6db82ea7 SC |
1140 | if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) { |
1141 | obj_datasec(abfd) = newsect; | |
e48f985c | 1142 | newsect->target_index = N_DATA; |
6db82ea7 SC |
1143 | return true; |
1144 | } | |
c188b0be | 1145 | |
6db82ea7 SC |
1146 | if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) { |
1147 | obj_bsssec(abfd) = newsect; | |
e48f985c | 1148 | newsect->target_index = N_BSS; |
6db82ea7 SC |
1149 | return true; |
1150 | } | |
1151 | ||
1152 | } | |
c188b0be | 1153 | |
6db82ea7 SC |
1154 | /* We allow more than three sections internally */ |
1155 | return true; | |
7ed4093a SC |
1156 | } |
1157 | ||
1158 | boolean | |
8eb5d4be JK |
1159 | NAME(aout,set_section_contents) (abfd, section, location, offset, count) |
1160 | bfd *abfd; | |
1161 | sec_ptr section; | |
1162 | PTR location; | |
1163 | file_ptr offset; | |
1164 | bfd_size_type count; | |
7ed4093a | 1165 | { |
7b02b4ed | 1166 | file_ptr text_end; |
7b02b4ed | 1167 | bfd_size_type text_size; |
ce07dd7c | 1168 | |
7ed4093a | 1169 | if (abfd->output_has_begun == false) |
ebd24135 ILT |
1170 | { |
1171 | if (NAME(aout,adjust_sizes_and_vmas) (abfd, | |
1172 | &text_size, | |
1173 | &text_end) == false) | |
1174 | return false; | |
9e2dad8e | 1175 | } |
12e7087f | 1176 | |
7ed4093a | 1177 | /* regardless, once we know what we're doing, we might as well get going */ |
c188b0be | 1178 | if (section != obj_bsssec(abfd)) |
7ed4093a | 1179 | { |
29e626eb ILT |
1180 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0) |
1181 | return false; | |
c188b0be | 1182 | |
7ed4093a SC |
1183 | if (count) { |
1184 | return (bfd_write ((PTR)location, 1, count, abfd) == count) ? | |
1185 | true : false; | |
1186 | } | |
6db82ea7 | 1187 | return true; |
7ed4093a SC |
1188 | } |
1189 | return true; | |
1190 | } | |
1191 | \f | |
5c8444f8 ILT |
1192 | /* Read the external symbols from an a.out file. */ |
1193 | ||
1194 | static boolean | |
1195 | aout_get_external_symbols (abfd) | |
1196 | bfd *abfd; | |
1197 | { | |
1198 | if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL) | |
1199 | { | |
1200 | bfd_size_type count; | |
1201 | struct external_nlist *syms; | |
1202 | ||
1203 | count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE; | |
1204 | ||
1205 | /* We allocate using malloc to make the values easy to free | |
1206 | later on. If we put them on the obstack it might not be | |
1207 | possible to free them. */ | |
1208 | syms = ((struct external_nlist *) | |
1209 | malloc ((size_t) count * EXTERNAL_NLIST_SIZE)); | |
1210 | if (syms == (struct external_nlist *) NULL && count != 0) | |
1211 | { | |
1212 | bfd_set_error (bfd_error_no_memory); | |
1213 | return false; | |
1214 | } | |
1215 | ||
1216 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
1217 | || (bfd_read (syms, 1, exec_hdr (abfd)->a_syms, abfd) | |
1218 | != exec_hdr (abfd)->a_syms)) | |
1219 | { | |
1220 | free (syms); | |
1221 | return false; | |
1222 | } | |
1223 | ||
1224 | obj_aout_external_syms (abfd) = syms; | |
1225 | obj_aout_external_sym_count (abfd) = count; | |
1226 | } | |
1227 | ||
4f019d04 ILT |
1228 | if (obj_aout_external_strings (abfd) == NULL |
1229 | && exec_hdr (abfd)->a_syms != 0) | |
5c8444f8 ILT |
1230 | { |
1231 | unsigned char string_chars[BYTES_IN_WORD]; | |
1232 | bfd_size_type stringsize; | |
1233 | char *strings; | |
1234 | ||
1235 | /* Get the size of the strings. */ | |
1236 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
1237 | || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd) | |
1238 | != BYTES_IN_WORD)) | |
1239 | return false; | |
1240 | stringsize = GET_WORD (abfd, string_chars); | |
1241 | ||
1242 | strings = (char *) malloc ((size_t) stringsize + 1); | |
1243 | if (strings == NULL) | |
1244 | { | |
1245 | bfd_set_error (bfd_error_no_memory); | |
1246 | return false; | |
1247 | } | |
1248 | ||
1249 | /* Skip space for the string count in the buffer for convenience | |
1250 | when using indexes. */ | |
1251 | if (bfd_read (strings + BYTES_IN_WORD, 1, stringsize - BYTES_IN_WORD, | |
1252 | abfd) | |
1253 | != stringsize - BYTES_IN_WORD) | |
1254 | { | |
1255 | free (strings); | |
1256 | return false; | |
1257 | } | |
1258 | ||
1afd2380 ILT |
1259 | /* Ensure that a zero index yields an empty string. */ |
1260 | strings[0] = '\0'; | |
1261 | ||
5c8444f8 ILT |
1262 | /* Sanity preservation. */ |
1263 | strings[stringsize] = '\0'; | |
1264 | ||
1265 | obj_aout_external_strings (abfd) = strings; | |
1266 | obj_aout_external_string_size (abfd) = stringsize; | |
1267 | } | |
1268 | ||
1269 | return true; | |
1270 | } | |
1271 | ||
4298e311 ILT |
1272 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type |
1273 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1274 | nlist structure. This function is responsible for setting | |
1275 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
c188b0be | 1276 | |
9783e04a | 1277 | static boolean |
4298e311 ILT |
1278 | translate_from_native_sym_flags (abfd, cache_ptr) |
1279 | bfd *abfd; | |
1280 | aout_symbol_type *cache_ptr; | |
9e2dad8e | 1281 | { |
4298e311 ILT |
1282 | flagword visible; |
1283 | ||
1284 | if ((cache_ptr->type & N_STAB) != 0 | |
1285 | || cache_ptr->type == N_FN) | |
1286 | { | |
1287 | asection *sec; | |
1288 | ||
1289 | /* This is a debugging symbol. */ | |
1290 | ||
1291 | cache_ptr->symbol.flags = BSF_DEBUGGING; | |
1292 | ||
1293 | /* Work out the symbol section. */ | |
1294 | switch (cache_ptr->type & N_TYPE) | |
1295 | { | |
1296 | case N_TEXT: | |
1297 | case N_FN: | |
1298 | sec = obj_textsec (abfd); | |
1299 | break; | |
1300 | case N_DATA: | |
1301 | sec = obj_datasec (abfd); | |
1302 | break; | |
1303 | case N_BSS: | |
1304 | sec = obj_bsssec (abfd); | |
1305 | break; | |
1306 | default: | |
1307 | case N_ABS: | |
4587b578 | 1308 | sec = bfd_abs_section_ptr; |
4298e311 ILT |
1309 | break; |
1310 | } | |
1311 | ||
1312 | cache_ptr->symbol.section = sec; | |
1313 | cache_ptr->symbol.value -= sec->vma; | |
1314 | ||
1315 | return true; | |
1316 | } | |
1317 | ||
1318 | /* Get the default visibility. This does not apply to all types, so | |
1319 | we just hold it in a local variable to use if wanted. */ | |
1320 | if ((cache_ptr->type & N_EXT) == 0) | |
1321 | visible = BSF_LOCAL; | |
1322 | else | |
1323 | visible = BSF_GLOBAL; | |
1324 | ||
1325 | switch (cache_ptr->type) | |
6db82ea7 | 1326 | { |
4298e311 ILT |
1327 | default: |
1328 | case N_ABS: case N_ABS | N_EXT: | |
4587b578 | 1329 | cache_ptr->symbol.section = bfd_abs_section_ptr; |
4298e311 ILT |
1330 | cache_ptr->symbol.flags = visible; |
1331 | break; | |
1332 | ||
1333 | case N_UNDF | N_EXT: | |
1334 | if (cache_ptr->symbol.value != 0) | |
1335 | { | |
1336 | /* This is a common symbol. */ | |
1337 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
4587b578 | 1338 | cache_ptr->symbol.section = bfd_com_section_ptr; |
4298e311 ILT |
1339 | } |
1340 | else | |
1341 | { | |
1342 | cache_ptr->symbol.flags = 0; | |
4587b578 | 1343 | cache_ptr->symbol.section = bfd_und_section_ptr; |
4298e311 ILT |
1344 | } |
1345 | break; | |
1346 | ||
1347 | case N_TEXT: case N_TEXT | N_EXT: | |
1348 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1349 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1350 | cache_ptr->symbol.flags = visible; | |
1351 | break; | |
1352 | ||
2cd086e3 ILT |
1353 | /* N_SETV symbols used to represent set vectors placed in the |
1354 | data section. They are no longer generated. Theoretically, | |
1355 | it was possible to extract the entries and combine them with | |
1356 | new ones, although I don't know if that was ever actually | |
1357 | done. Unless that feature is restored, treat them as data | |
1358 | symbols. */ | |
1359 | case N_SETV: case N_SETV | N_EXT: | |
4298e311 ILT |
1360 | case N_DATA: case N_DATA | N_EXT: |
1361 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1362 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1363 | cache_ptr->symbol.flags = visible; | |
1364 | break; | |
1365 | ||
1366 | case N_BSS: case N_BSS | N_EXT: | |
1367 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1368 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1369 | cache_ptr->symbol.flags = visible; | |
1370 | break; | |
1371 | ||
964affdc DM |
1372 | case N_SETA: case N_SETA | N_EXT: |
1373 | case N_SETT: case N_SETT | N_EXT: | |
1374 | case N_SETD: case N_SETD | N_EXT: | |
1375 | case N_SETB: case N_SETB | N_EXT: | |
ebd24135 | 1376 | { |
ebd24135 | 1377 | asection *section; |
4298e311 | 1378 | arelent_chain *reloc; |
ebd24135 | 1379 | asection *into_section; |
9783e04a | 1380 | |
4298e311 ILT |
1381 | /* This is a set symbol. The name of the symbol is the name |
1382 | of the set (e.g., __CTOR_LIST__). The value of the symbol | |
1383 | is the value to add to the set. We create a section with | |
1384 | the same name as the symbol, and add a reloc to insert the | |
1385 | appropriate value into the section. | |
1386 | ||
1387 | This action is actually obsolete; it used to make the | |
1388 | linker do the right thing, but the linker no longer uses | |
1389 | this function. */ | |
1390 | ||
1391 | section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name); | |
1392 | if (section == NULL) | |
1393 | { | |
1394 | char *copy; | |
1395 | ||
1396 | copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1); | |
1397 | if (copy == NULL) | |
1398 | { | |
1399 | bfd_set_error (bfd_error_no_memory); | |
1400 | return false; | |
1401 | } | |
1402 | ||
1403 | strcpy (copy, cache_ptr->symbol.name); | |
1404 | section = bfd_make_section (abfd, copy); | |
1405 | if (section == NULL) | |
1406 | return false; | |
1407 | } | |
1408 | ||
1409 | reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain)); | |
1410 | if (reloc == NULL) | |
9783e04a | 1411 | { |
68241b2b | 1412 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
1413 | return false; |
1414 | } | |
1415 | ||
4298e311 ILT |
1416 | /* Build a relocation entry for the constructor. */ |
1417 | switch (cache_ptr->type & N_TYPE) | |
a99c3d70 | 1418 | { |
4298e311 | 1419 | case N_SETA: |
4587b578 | 1420 | into_section = bfd_abs_section_ptr; |
ebd24135 ILT |
1421 | cache_ptr->type = N_ABS; |
1422 | break; | |
4298e311 ILT |
1423 | case N_SETT: |
1424 | into_section = obj_textsec (abfd); | |
ebd24135 ILT |
1425 | cache_ptr->type = N_TEXT; |
1426 | break; | |
4298e311 ILT |
1427 | case N_SETD: |
1428 | into_section = obj_datasec (abfd); | |
ebd24135 ILT |
1429 | cache_ptr->type = N_DATA; |
1430 | break; | |
4298e311 ILT |
1431 | case N_SETB: |
1432 | into_section = obj_bsssec (abfd); | |
ebd24135 ILT |
1433 | cache_ptr->type = N_BSS; |
1434 | break; | |
ebd24135 | 1435 | } |
88dfcd68 | 1436 | |
4298e311 ILT |
1437 | /* Build a relocation pointing into the constructor section |
1438 | pointing at the symbol in the set vector specified. */ | |
ebd24135 | 1439 | reloc->relent.addend = cache_ptr->symbol.value; |
4298e311 | 1440 | cache_ptr->symbol.section = into_section; |
ebd24135 | 1441 | reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr; |
6db82ea7 | 1442 | |
4298e311 ILT |
1443 | /* We modify the symbol to belong to a section depending upon |
1444 | the name of the symbol, and add to the size of the section | |
1445 | to contain a pointer to the symbol. Build a reloc entry to | |
1446 | relocate to this symbol attached to this section. */ | |
a8a916c8 | 1447 | section->flags = SEC_CONSTRUCTOR | SEC_RELOC; |
a99c3d70 | 1448 | |
ebd24135 ILT |
1449 | section->reloc_count++; |
1450 | section->alignment_power = 2; | |
a99c3d70 | 1451 | |
ebd24135 ILT |
1452 | reloc->next = section->constructor_chain; |
1453 | section->constructor_chain = reloc; | |
1454 | reloc->relent.address = section->_raw_size; | |
4298e311 ILT |
1455 | section->_raw_size += BYTES_IN_WORD; |
1456 | ||
f42fe159 | 1457 | reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd); |
a99c3d70 | 1458 | |
ebd24135 ILT |
1459 | cache_ptr->symbol.flags |= BSF_CONSTRUCTOR; |
1460 | } | |
1461 | break; | |
0c205af2 | 1462 | |
4298e311 ILT |
1463 | case N_WARNING: |
1464 | /* This symbol is the text of a warning message. The next | |
1465 | symbol is the symbol to associate the warning with. If a | |
1466 | reference is made to that symbol, a warning is issued. */ | |
1467 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
ebd24135 | 1468 | |
4298e311 ILT |
1469 | /* @@ Stuffing pointers into integers is a no-no. We can |
1470 | usually get away with it if the integer is large enough | |
1471 | though. */ | |
1472 | if (sizeof (cache_ptr + 1) > sizeof (bfd_vma)) | |
1473 | abort (); | |
1474 | cache_ptr->symbol.value = (bfd_vma) (cache_ptr + 1); | |
ebd24135 | 1475 | |
4587b578 | 1476 | cache_ptr->symbol.section = bfd_abs_section_ptr; |
ebd24135 | 1477 | |
4298e311 | 1478 | break; |
ebd24135 | 1479 | |
4298e311 ILT |
1480 | case N_INDR: case N_INDR | N_EXT: |
1481 | /* An indirect symbol. This consists of two symbols in a row. | |
1482 | The first symbol is the name of the indirection. The second | |
1483 | symbol is the name of the target. A reference to the first | |
1484 | symbol becomes a reference to the second. */ | |
1485 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible; | |
ebd24135 | 1486 | |
4298e311 ILT |
1487 | /* @@ Stuffing pointers into integers is a no-no. We can |
1488 | usually get away with it if the integer is large enough | |
1489 | though. */ | |
1490 | if (sizeof (cache_ptr + 1) > sizeof (bfd_vma)) | |
1491 | abort (); | |
1492 | cache_ptr->symbol.value = (bfd_vma) (cache_ptr + 1); | |
ebd24135 | 1493 | |
4587b578 | 1494 | cache_ptr->symbol.section = bfd_ind_section_ptr; |
a99c3d70 | 1495 | |
4298e311 ILT |
1496 | break; |
1497 | ||
1498 | case N_WEAKU: | |
4587b578 | 1499 | cache_ptr->symbol.section = bfd_und_section_ptr; |
4298e311 ILT |
1500 | cache_ptr->symbol.flags = BSF_WEAK; |
1501 | break; | |
1502 | ||
1503 | case N_WEAKA: | |
4587b578 | 1504 | cache_ptr->symbol.section = bfd_abs_section_ptr; |
4298e311 ILT |
1505 | cache_ptr->symbol.flags = BSF_WEAK; |
1506 | break; | |
1507 | ||
1508 | case N_WEAKT: | |
1509 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1510 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1511 | cache_ptr->symbol.flags = BSF_WEAK; | |
1512 | break; | |
1513 | ||
1514 | case N_WEAKD: | |
1515 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1516 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1517 | cache_ptr->symbol.flags = BSF_WEAK; | |
1518 | break; | |
1519 | ||
1520 | case N_WEAKB: | |
1521 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1522 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1523 | cache_ptr->symbol.flags = BSF_WEAK; | |
1524 | break; | |
a99c3d70 | 1525 | } |
4298e311 | 1526 | |
9783e04a | 1527 | return true; |
7ed4093a SC |
1528 | } |
1529 | ||
4298e311 | 1530 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ |
6db82ea7 | 1531 | |
4c3721d5 | 1532 | static boolean |
4298e311 | 1533 | translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer) |
8eb5d4be | 1534 | bfd *abfd; |
4298e311 ILT |
1535 | asymbol *cache_ptr; |
1536 | struct external_nlist *sym_pointer; | |
7ed4093a SC |
1537 | { |
1538 | bfd_vma value = cache_ptr->value; | |
1539 | ||
4298e311 ILT |
1540 | /* Mask out any existing type bits in case copying from one section |
1541 | to another. */ | |
10dea9ed | 1542 | sym_pointer->e_type[0] &= ~N_TYPE; |
a99c3d70 | 1543 | |
4587b578 | 1544 | if (bfd_is_abs_section (bfd_get_section (cache_ptr))) |
3caa6924 | 1545 | sym_pointer->e_type[0] |= N_ABS; |
f5419a59 ILT |
1546 | else if (bfd_get_section (cache_ptr) == obj_textsec (abfd) |
1547 | || (bfd_get_section (cache_ptr)->output_section | |
1548 | == obj_textsec (abfd))) | |
3caa6924 | 1549 | sym_pointer->e_type[0] |= N_TEXT; |
f5419a59 ILT |
1550 | else if (bfd_get_section (cache_ptr) == obj_datasec (abfd) |
1551 | || (bfd_get_section (cache_ptr)->output_section | |
1552 | == obj_datasec (abfd))) | |
a99c3d70 | 1553 | sym_pointer->e_type[0] |= N_DATA; |
f5419a59 ILT |
1554 | else if (bfd_get_section (cache_ptr) == obj_bsssec (abfd) |
1555 | || (bfd_get_section (cache_ptr)->output_section | |
1556 | == obj_bsssec (abfd))) | |
3caa6924 | 1557 | sym_pointer->e_type[0] |= N_BSS; |
4298e311 ILT |
1558 | else if (bfd_get_section (cache_ptr) == NULL) |
1559 | { | |
1560 | /* Protect the bfd_is_com_section call. This case occurs, e.g., | |
1561 | for the *DEBUG* section of a COFF file. */ | |
1562 | bfd_set_error (bfd_error_nonrepresentable_section); | |
1563 | return false; | |
1564 | } | |
4587b578 ILT |
1565 | else if (bfd_is_und_section (bfd_get_section (cache_ptr))) |
1566 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1567 | else if (bfd_is_ind_section (bfd_get_section (cache_ptr))) | |
1568 | sym_pointer->e_type[0] = N_INDR; | |
4298e311 ILT |
1569 | else if (bfd_is_com_section (bfd_get_section (cache_ptr))) |
1570 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1571 | else | |
1572 | { | |
1573 | bfd_set_error (bfd_error_nonrepresentable_section); | |
1574 | return false; | |
1575 | } | |
6f56c941 | 1576 | |
6db82ea7 | 1577 | /* Turn the symbol from section relative to absolute again */ |
1afd2380 ILT |
1578 | if (cache_ptr->section->output_section != NULL) |
1579 | value += (cache_ptr->section->output_section->vma | |
1580 | + cache_ptr->section->output_offset); | |
1581 | else | |
1582 | value += cache_ptr->section->vma; | |
c188b0be | 1583 | |
4298e311 | 1584 | if ((cache_ptr->flags & BSF_WARNING) != 0) |
d7e34f67 | 1585 | sym_pointer->e_type[0] = N_WARNING; |
c188b0be | 1586 | |
4298e311 ILT |
1587 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) |
1588 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1589 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
3caa6924 | 1590 | sym_pointer->e_type[0] |= N_EXT; |
4298e311 ILT |
1591 | |
1592 | if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0) | |
1593 | { | |
1594 | int type = ((aout_symbol_type *) cache_ptr)->type; | |
1595 | switch (type) | |
1596 | { | |
1597 | case N_ABS: type = N_SETA; break; | |
1598 | case N_TEXT: type = N_SETT; break; | |
1599 | case N_DATA: type = N_SETD; break; | |
1600 | case N_BSS: type = N_SETB; break; | |
1601 | } | |
1602 | sym_pointer->e_type[0] = type; | |
1603 | } | |
1604 | ||
1605 | if ((cache_ptr->flags & BSF_WEAK) != 0) | |
1606 | { | |
1607 | int type; | |
1608 | ||
1609 | switch (sym_pointer->e_type[0] & N_TYPE) | |
1610 | { | |
1611 | default: | |
1612 | case N_ABS: type = N_WEAKA; break; | |
1613 | case N_TEXT: type = N_WEAKT; break; | |
1614 | case N_DATA: type = N_WEAKD; break; | |
1615 | case N_BSS: type = N_WEAKB; break; | |
1616 | case N_UNDF: type = N_WEAKU; break; | |
1617 | } | |
1618 | sym_pointer->e_type[0] = type; | |
1619 | } | |
6db82ea7 | 1620 | |
7ed4093a | 1621 | PUT_WORD(abfd, value, sym_pointer->e_value); |
4c3721d5 ILT |
1622 | |
1623 | return true; | |
7ed4093a SC |
1624 | } |
1625 | \f | |
1626 | /* Native-level interface to symbols. */ | |
1627 | ||
7ed4093a | 1628 | asymbol * |
8eb5d4be JK |
1629 | NAME(aout,make_empty_symbol) (abfd) |
1630 | bfd *abfd; | |
9e2dad8e JG |
1631 | { |
1632 | aout_symbol_type *new = | |
1633 | (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type)); | |
9783e04a DM |
1634 | if (!new) |
1635 | { | |
68241b2b | 1636 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
1637 | return NULL; |
1638 | } | |
9e2dad8e | 1639 | new->symbol.the_bfd = abfd; |
fa2b89f1 | 1640 | |
9e2dad8e JG |
1641 | return &new->symbol; |
1642 | } | |
7ed4093a | 1643 | |
0ee75d02 ILT |
1644 | /* Translate a set of internal symbols into external symbols. */ |
1645 | ||
fa77c704 ILT |
1646 | boolean |
1647 | NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic) | |
0ee75d02 ILT |
1648 | bfd *abfd; |
1649 | aout_symbol_type *in; | |
1650 | struct external_nlist *ext; | |
1651 | bfd_size_type count; | |
1652 | char *str; | |
1653 | bfd_size_type strsize; | |
1654 | boolean dynamic; | |
1655 | { | |
1656 | struct external_nlist *ext_end; | |
1657 | ||
1658 | ext_end = ext + count; | |
1659 | for (; ext < ext_end; ext++, in++) | |
1660 | { | |
1661 | bfd_vma x; | |
1662 | ||
1663 | x = GET_WORD (abfd, ext->e_strx); | |
1664 | in->symbol.the_bfd = abfd; | |
ca1c6bec ILT |
1665 | |
1666 | /* For the normal symbols, the zero index points at the number | |
1667 | of bytes in the string table but is to be interpreted as the | |
1668 | null string. For the dynamic symbols, the number of bytes in | |
1669 | the string table is stored in the __DYNAMIC structure and the | |
1670 | zero index points at an actual string. */ | |
1671 | if (x == 0 && ! dynamic) | |
1672 | in->symbol.name = ""; | |
1673 | else if (x < strsize) | |
0ee75d02 ILT |
1674 | in->symbol.name = str + x; |
1675 | else | |
1676 | return false; | |
1677 | ||
1678 | in->symbol.value = GET_SWORD (abfd, ext->e_value); | |
1679 | in->desc = bfd_h_get_16 (abfd, ext->e_desc); | |
1680 | in->other = bfd_h_get_8 (abfd, ext->e_other); | |
1681 | in->type = bfd_h_get_8 (abfd, ext->e_type); | |
74942465 | 1682 | in->symbol.udata.p = NULL; |
0ee75d02 | 1683 | |
4298e311 | 1684 | if (! translate_from_native_sym_flags (abfd, in)) |
9783e04a | 1685 | return false; |
0ee75d02 ILT |
1686 | |
1687 | if (dynamic) | |
1688 | in->symbol.flags |= BSF_DYNAMIC; | |
1689 | } | |
1690 | ||
1691 | return true; | |
1692 | } | |
1693 | ||
1694 | /* We read the symbols into a buffer, which is discarded when this | |
1695 | function exits. We read the strings into a buffer large enough to | |
1696 | hold them all plus all the cached symbol entries. */ | |
1697 | ||
7ed4093a | 1698 | boolean |
8eb5d4be JK |
1699 | NAME(aout,slurp_symbol_table) (abfd) |
1700 | bfd *abfd; | |
9e2dad8e | 1701 | { |
5c8444f8 | 1702 | struct external_nlist *old_external_syms; |
9e2dad8e | 1703 | aout_symbol_type *cached; |
5c8444f8 | 1704 | size_t cached_size; |
0f213cc2 | 1705 | |
9e2dad8e | 1706 | /* If there's no work to be done, don't do any */ |
5c8444f8 ILT |
1707 | if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL) |
1708 | return true; | |
1709 | ||
1710 | old_external_syms = obj_aout_external_syms (abfd); | |
1711 | ||
1712 | if (! aout_get_external_symbols (abfd)) | |
1713 | return false; | |
1714 | ||
fa77c704 | 1715 | cached_size = (obj_aout_external_sym_count (abfd) |
5c8444f8 ILT |
1716 | * sizeof (aout_symbol_type)); |
1717 | cached = (aout_symbol_type *) malloc (cached_size); | |
74942465 | 1718 | if (cached == NULL && cached_size != 0) |
9783e04a | 1719 | { |
68241b2b | 1720 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
1721 | return false; |
1722 | } | |
74942465 ILT |
1723 | if (cached_size != 0) |
1724 | memset (cached, 0, cached_size); | |
5c8444f8 ILT |
1725 | |
1726 | /* Convert from external symbol information to internal. */ | |
fa77c704 ILT |
1727 | if (! (NAME(aout,translate_symbol_table) |
1728 | (abfd, cached, | |
1729 | obj_aout_external_syms (abfd), | |
1730 | obj_aout_external_sym_count (abfd), | |
1731 | obj_aout_external_strings (abfd), | |
1732 | obj_aout_external_string_size (abfd), | |
1733 | false))) | |
0f213cc2 | 1734 | { |
5c8444f8 | 1735 | free (cached); |
0f213cc2 KR |
1736 | return false; |
1737 | } | |
1738 | ||
fa77c704 | 1739 | bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd); |
0f213cc2 | 1740 | |
5c8444f8 | 1741 | obj_aout_symbols (abfd) = cached; |
0f213cc2 | 1742 | |
5c8444f8 ILT |
1743 | /* It is very likely that anybody who calls this function will not |
1744 | want the external symbol information, so if it was allocated | |
1745 | because of our call to aout_get_external_symbols, we free it up | |
1746 | right away to save space. */ | |
1747 | if (old_external_syms == (struct external_nlist *) NULL | |
1748 | && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) | |
1749 | { | |
1750 | free (obj_aout_external_syms (abfd)); | |
1751 | obj_aout_external_syms (abfd) = NULL; | |
0ee75d02 | 1752 | } |
0f213cc2 | 1753 | |
9e2dad8e JG |
1754 | return true; |
1755 | } | |
0f213cc2 | 1756 | \f |
d17fc4c9 ILT |
1757 | /* We use a hash table when writing out symbols so that we only write |
1758 | out a particular string once. This helps particularly when the | |
1759 | linker writes out stabs debugging entries, because each different | |
1760 | contributing object file tends to have many duplicate stabs | |
1761 | strings. | |
1762 | ||
d63d0479 ILT |
1763 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it |
1764 | if BFD_TRADITIONAL_FORMAT is set. */ | |
0f213cc2 | 1765 | |
d17fc4c9 | 1766 | static bfd_size_type add_to_stringtab |
1afd2380 ILT |
1767 | PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean)); |
1768 | static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *)); | |
d17fc4c9 ILT |
1769 | |
1770 | /* Get the index of a string in a strtab, adding it if it is not | |
1afd2380 | 1771 | already present. */ |
d17fc4c9 ILT |
1772 | |
1773 | static INLINE bfd_size_type | |
1774 | add_to_stringtab (abfd, tab, str, copy) | |
0f213cc2 | 1775 | bfd *abfd; |
1afd2380 | 1776 | struct bfd_strtab_hash *tab; |
d17fc4c9 ILT |
1777 | const char *str; |
1778 | boolean copy; | |
0f213cc2 | 1779 | { |
1afd2380 | 1780 | boolean hash; |
435b470e | 1781 | bfd_size_type index; |
0f213cc2 | 1782 | |
d17fc4c9 | 1783 | /* An index of 0 always means the empty string. */ |
204ba9e3 | 1784 | if (str == 0 || *str == '\0') |
d17fc4c9 | 1785 | return 0; |
0f213cc2 | 1786 | |
1afd2380 ILT |
1787 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx |
1788 | doesn't understand a hashed string table. */ | |
1789 | hash = true; | |
1790 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
1791 | hash = false; | |
0f213cc2 | 1792 | |
435b470e ILT |
1793 | index = _bfd_stringtab_add (tab, str, hash, copy); |
1794 | ||
1795 | if (index != (bfd_size_type) -1) | |
1796 | { | |
1797 | /* Add BYTES_IN_WORD to the return value to account for the | |
1798 | space taken up by the string table size. */ | |
1799 | index += BYTES_IN_WORD; | |
1800 | } | |
1801 | ||
1802 | return index; | |
0f213cc2 KR |
1803 | } |
1804 | ||
d17fc4c9 ILT |
1805 | /* Write out a strtab. ABFD is already at the right location in the |
1806 | file. */ | |
1807 | ||
29e626eb | 1808 | static boolean |
d17fc4c9 ILT |
1809 | emit_stringtab (abfd, tab) |
1810 | register bfd *abfd; | |
1afd2380 | 1811 | struct bfd_strtab_hash *tab; |
0f213cc2 | 1812 | { |
d17fc4c9 | 1813 | bfd_byte buffer[BYTES_IN_WORD]; |
0f213cc2 | 1814 | |
1afd2380 ILT |
1815 | /* The string table starts with the size. */ |
1816 | PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer); | |
29e626eb ILT |
1817 | if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD) |
1818 | return false; | |
0f213cc2 | 1819 | |
1afd2380 | 1820 | return _bfd_stringtab_emit (abfd, tab); |
0f213cc2 | 1821 | } |
d17fc4c9 | 1822 | \f |
4c3721d5 | 1823 | boolean |
8eb5d4be JK |
1824 | NAME(aout,write_syms) (abfd) |
1825 | bfd *abfd; | |
0f213cc2 KR |
1826 | { |
1827 | unsigned int count ; | |
1828 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1afd2380 | 1829 | struct bfd_strtab_hash *strtab; |
0f213cc2 | 1830 | |
1afd2380 ILT |
1831 | strtab = _bfd_stringtab_init (); |
1832 | if (strtab == NULL) | |
d17fc4c9 | 1833 | return false; |
0f213cc2 KR |
1834 | |
1835 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1836 | { | |
7ed4093a | 1837 | asymbol *g = generic[count]; |
d17fc4c9 | 1838 | bfd_size_type indx; |
7ed4093a | 1839 | struct external_nlist nsp; |
6db82ea7 | 1840 | |
1afd2380 | 1841 | indx = add_to_stringtab (abfd, strtab, g->name, false); |
d17fc4c9 ILT |
1842 | if (indx == (bfd_size_type) -1) |
1843 | goto error_return; | |
1844 | PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx); | |
6db82ea7 | 1845 | |
0f213cc2 KR |
1846 | if (bfd_asymbol_flavour(g) == abfd->xvec->flavour) |
1847 | { | |
1848 | bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc); | |
1849 | bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other); | |
1850 | bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type); | |
1851 | } | |
7ed4093a | 1852 | else |
0f213cc2 KR |
1853 | { |
1854 | bfd_h_put_16(abfd,0, nsp.e_desc); | |
1855 | bfd_h_put_8(abfd, 0, nsp.e_other); | |
1856 | bfd_h_put_8(abfd, 0, nsp.e_type); | |
1857 | } | |
7b02b4ed | 1858 | |
4298e311 | 1859 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) |
d17fc4c9 | 1860 | goto error_return; |
7b02b4ed | 1861 | |
4c3721d5 ILT |
1862 | if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd) |
1863 | != EXTERNAL_NLIST_SIZE) | |
d17fc4c9 | 1864 | goto error_return; |
7ed4093a | 1865 | |
0f213cc2 KR |
1866 | /* NB: `KEEPIT' currently overlays `flags', so set this only |
1867 | here, at the end. */ | |
1868 | g->KEEPIT = count; | |
1869 | } | |
7ed4093a | 1870 | |
1afd2380 | 1871 | if (! emit_stringtab (abfd, strtab)) |
d17fc4c9 ILT |
1872 | goto error_return; |
1873 | ||
1afd2380 | 1874 | _bfd_stringtab_free (strtab); |
d17fc4c9 ILT |
1875 | |
1876 | return true; | |
1877 | ||
1878 | error_return: | |
1afd2380 | 1879 | _bfd_stringtab_free (strtab); |
d17fc4c9 | 1880 | return false; |
0f213cc2 | 1881 | } |
7ed4093a | 1882 | |
0f213cc2 | 1883 | \f |
326e32d7 | 1884 | long |
8eb5d4be JK |
1885 | NAME(aout,get_symtab) (abfd, location) |
1886 | bfd *abfd; | |
1887 | asymbol **location; | |
3f7607af | 1888 | { |
7ed4093a SC |
1889 | unsigned int counter = 0; |
1890 | aout_symbol_type *symbase; | |
ce07dd7c | 1891 | |
326e32d7 ILT |
1892 | if (!NAME(aout,slurp_symbol_table)(abfd)) |
1893 | return -1; | |
ce07dd7c | 1894 | |
7ed4093a SC |
1895 | for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);) |
1896 | *(location++) = (asymbol *)( symbase++); | |
1897 | *location++ =0; | |
ce07dd7c | 1898 | return bfd_get_symcount (abfd); |
3f7607af | 1899 | } |
7ed4093a SC |
1900 | |
1901 | \f | |
1902 | /* Standard reloc stuff */ | |
1903 | /* Output standard relocation information to a file in target byte order. */ | |
1904 | ||
1905 | void | |
8eb5d4be JK |
1906 | NAME(aout,swap_std_reloc_out) (abfd, g, natptr) |
1907 | bfd *abfd; | |
1908 | arelent *g; | |
1909 | struct reloc_std_external *natptr; | |
3f7607af | 1910 | { |
6db82ea7 SC |
1911 | int r_index; |
1912 | asymbol *sym = *(g->sym_ptr_ptr); | |
1913 | int r_extern; | |
1914 | unsigned int r_length; | |
1915 | int r_pcrel; | |
1916 | int r_baserel, r_jmptable, r_relative; | |
6db82ea7 | 1917 | asection *output_section = sym->section->output_section; |
ce07dd7c | 1918 | |
6db82ea7 | 1919 | PUT_WORD(abfd, g->address, natptr->r_address); |
ce07dd7c | 1920 | |
6db82ea7 SC |
1921 | r_length = g->howto->size ; /* Size as a power of two */ |
1922 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
c188b0be DM |
1923 | /* XXX This relies on relocs coming from a.out files. */ |
1924 | r_baserel = (g->howto->type & 8) != 0; | |
cb9461ff JK |
1925 | r_jmptable = (g->howto->type & 16) != 0; |
1926 | r_relative = (g->howto->type & 32) != 0; | |
c188b0be | 1927 | |
728472f1 ILT |
1928 | #if 0 |
1929 | /* For a standard reloc, the addend is in the object file. */ | |
6db82ea7 | 1930 | r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; |
728472f1 | 1931 | #endif |
c188b0be | 1932 | |
6db82ea7 SC |
1933 | /* name was clobbered by aout_write_syms to be symbol index */ |
1934 | ||
c188b0be | 1935 | /* If this relocation is relative to a symbol then set the |
2768b3f7 SC |
1936 | r_index to the symbols index, and the r_extern bit. |
1937 | ||
1938 | Absolute symbols can come in in two ways, either as an offset | |
1939 | from the abs section, or as a symbol which has an abs value. | |
1940 | check for that here | |
1941 | */ | |
c188b0be | 1942 | |
2768b3f7 | 1943 | |
382f2a3d | 1944 | if (bfd_is_com_section (output_section) |
4587b578 ILT |
1945 | || bfd_is_abs_section (output_section) |
1946 | || bfd_is_und_section (output_section)) | |
ce07dd7c | 1947 | { |
4587b578 | 1948 | if (bfd_abs_section_ptr->symbol == sym) |
2768b3f7 SC |
1949 | { |
1950 | /* Whoops, looked like an abs symbol, but is really an offset | |
1951 | from the abs section */ | |
1952 | r_index = 0; | |
1953 | r_extern = 0; | |
1954 | } | |
c188b0be | 1955 | else |
2768b3f7 SC |
1956 | { |
1957 | /* Fill in symbol */ | |
1958 | r_extern = 1; | |
1959 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); | |
c188b0be | 1960 | |
2768b3f7 | 1961 | } |
ce07dd7c | 1962 | } |
c188b0be | 1963 | else |
ce07dd7c KR |
1964 | { |
1965 | /* Just an ordinary section */ | |
1966 | r_extern = 0; | |
c188b0be | 1967 | r_index = output_section->target_index; |
ce07dd7c KR |
1968 | } |
1969 | ||
6db82ea7 SC |
1970 | /* now the fun stuff */ |
1971 | if (abfd->xvec->header_byteorder_big_p != false) { | |
7ed4093a SC |
1972 | natptr->r_index[0] = r_index >> 16; |
1973 | natptr->r_index[1] = r_index >> 8; | |
1974 | natptr->r_index[2] = r_index; | |
1975 | natptr->r_type[0] = | |
6db82ea7 SC |
1976 | (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0) |
1977 | | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0) | |
1978 | | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0) | |
1979 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0) | |
1980 | | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0) | |
1981 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG); | |
7ed4093a | 1982 | } else { |
6db82ea7 SC |
1983 | natptr->r_index[2] = r_index >> 16; |
1984 | natptr->r_index[1] = r_index >> 8; | |
1985 | natptr->r_index[0] = r_index; | |
1986 | natptr->r_type[0] = | |
1987 | (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0) | |
7ed4093a | 1988 | | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0) |
6db82ea7 SC |
1989 | | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0) |
1990 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0) | |
1991 | | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0) | |
1992 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
1993 | } | |
3f7607af | 1994 | } |
7ed4093a SC |
1995 | |
1996 | ||
1997 | /* Extended stuff */ | |
1998 | /* Output extended relocation information to a file in target byte order. */ | |
1999 | ||
2000 | void | |
8eb5d4be JK |
2001 | NAME(aout,swap_ext_reloc_out) (abfd, g, natptr) |
2002 | bfd *abfd; | |
2003 | arelent *g; | |
2004 | register struct reloc_ext_external *natptr; | |
3f7607af | 2005 | { |
6db82ea7 SC |
2006 | int r_index; |
2007 | int r_extern; | |
2008 | unsigned int r_type; | |
2009 | unsigned int r_addend; | |
c188b0be | 2010 | asymbol *sym = *(g->sym_ptr_ptr); |
6db82ea7 | 2011 | asection *output_section = sym->section->output_section; |
c188b0be | 2012 | |
6db82ea7 | 2013 | PUT_WORD (abfd, g->address, natptr->r_address); |
c188b0be | 2014 | |
6db82ea7 | 2015 | r_type = (unsigned int) g->howto->type; |
7ed4093a | 2016 | |
c188b0be | 2017 | r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; |
7ed4093a | 2018 | |
c188b0be | 2019 | /* If this relocation is relative to a symbol then set the |
2768b3f7 SC |
2020 | r_index to the symbols index, and the r_extern bit. |
2021 | ||
2022 | Absolute symbols can come in in two ways, either as an offset | |
2023 | from the abs section, or as a symbol which has an abs value. | |
c188b0be DM |
2024 | check for that here. */ |
2025 | ||
382f2a3d | 2026 | if (bfd_is_com_section (output_section) |
4587b578 ILT |
2027 | || bfd_is_abs_section (output_section) |
2028 | || bfd_is_und_section (output_section)) | |
6db82ea7 | 2029 | { |
4587b578 | 2030 | if (bfd_abs_section_ptr->symbol == sym) |
2768b3f7 SC |
2031 | { |
2032 | /* Whoops, looked like an abs symbol, but is really an offset | |
2033 | from the abs section */ | |
2034 | r_index = 0; | |
2035 | r_extern = 0; | |
2036 | } | |
c188b0be | 2037 | else |
2768b3f7 SC |
2038 | { |
2039 | r_extern = 1; | |
2040 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); | |
2041 | } | |
6db82ea7 | 2042 | } |
c188b0be | 2043 | else |
6db82ea7 SC |
2044 | { |
2045 | /* Just an ordinary section */ | |
2046 | r_extern = 0; | |
c188b0be | 2047 | r_index = output_section->target_index; |
6db82ea7 | 2048 | } |
c188b0be | 2049 | |
7ed4093a SC |
2050 | /* now the fun stuff */ |
2051 | if (abfd->xvec->header_byteorder_big_p != false) { | |
2768b3f7 SC |
2052 | natptr->r_index[0] = r_index >> 16; |
2053 | natptr->r_index[1] = r_index >> 8; | |
2054 | natptr->r_index[2] = r_index; | |
2055 | natptr->r_type[0] = | |
c188b0be DM |
2056 | ((r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0) |
2057 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
2768b3f7 SC |
2058 | } else { |
2059 | natptr->r_index[2] = r_index >> 16; | |
2060 | natptr->r_index[1] = r_index >> 8; | |
2061 | natptr->r_index[0] = r_index; | |
2062 | natptr->r_type[0] = | |
2063 | (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0) | |
2064 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
2065 | } | |
7ed4093a SC |
2066 | |
2067 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
2068 | } | |
2069 | ||
6db82ea7 SC |
2070 | /* BFD deals internally with all things based from the section they're |
2071 | in. so, something in 10 bytes into a text section with a base of | |
c188b0be | 2072 | 50 would have a symbol (.text+10) and know .text vma was 50. |
6db82ea7 SC |
2073 | |
2074 | Aout keeps all it's symbols based from zero, so the symbol would | |
2075 | contain 60. This macro subs the base of each section from the value | |
2076 | to give the true offset from the section */ | |
2077 | ||
2078 | ||
7ed4093a SC |
2079 | #define MOVE_ADDRESS(ad) \ |
2080 | if (r_extern) { \ | |
6db82ea7 SC |
2081 | /* undefined symbol */ \ |
2082 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
2083 | cache_ptr->addend = ad; \ | |
2084 | } else { \ | |
2085 | /* defined, section relative. replace symbol with pointer to \ | |
2086 | symbol which points to section */ \ | |
7ed4093a SC |
2087 | switch (r_index) { \ |
2088 | case N_TEXT: \ | |
2089 | case N_TEXT | N_EXT: \ | |
6db82ea7 | 2090 | cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
2091 | cache_ptr->addend = ad - su->textsec->vma; \ |
2092 | break; \ | |
2093 | case N_DATA: \ | |
2094 | case N_DATA | N_EXT: \ | |
6db82ea7 | 2095 | cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
2096 | cache_ptr->addend = ad - su->datasec->vma; \ |
2097 | break; \ | |
2098 | case N_BSS: \ | |
2099 | case N_BSS | N_EXT: \ | |
6db82ea7 | 2100 | cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
2101 | cache_ptr->addend = ad - su->bsssec->vma; \ |
2102 | break; \ | |
6db82ea7 | 2103 | default: \ |
7ed4093a SC |
2104 | case N_ABS: \ |
2105 | case N_ABS | N_EXT: \ | |
4587b578 | 2106 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ |
6db82ea7 | 2107 | cache_ptr->addend = ad; \ |
7ed4093a SC |
2108 | break; \ |
2109 | } \ | |
2110 | } \ | |
2111 | ||
2112 | void | |
8eb5d4be JK |
2113 | NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols) |
2114 | bfd *abfd; | |
2115 | struct reloc_ext_external *bytes; | |
2116 | arelent *cache_ptr; | |
2117 | asymbol **symbols; | |
7ed4093a SC |
2118 | { |
2119 | int r_index; | |
2120 | int r_extern; | |
2121 | unsigned int r_type; | |
6db82ea7 | 2122 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
7ed4093a SC |
2123 | |
2124 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
2125 | ||
2126 | /* now the fun stuff */ | |
2127 | if (abfd->xvec->header_byteorder_big_p != false) { | |
382f2a3d ILT |
2128 | r_index = (bytes->r_index[0] << 16) |
2129 | | (bytes->r_index[1] << 8) | |
2130 | | bytes->r_index[2]; | |
7ed4093a SC |
2131 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); |
2132 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
2133 | >> RELOC_EXT_BITS_TYPE_SH_BIG; | |
2134 | } else { | |
382f2a3d ILT |
2135 | r_index = (bytes->r_index[2] << 16) |
2136 | | (bytes->r_index[1] << 8) | |
2137 | | bytes->r_index[0]; | |
7ed4093a SC |
2138 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); |
2139 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
2140 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE; | |
2141 | } | |
2142 | ||
2143 | cache_ptr->howto = howto_table_ext + r_type; | |
6db82ea7 | 2144 | MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend)); |
7ed4093a SC |
2145 | } |
2146 | ||
2147 | void | |
8eb5d4be JK |
2148 | NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols) |
2149 | bfd *abfd; | |
2150 | struct reloc_std_external *bytes; | |
2151 | arelent *cache_ptr; | |
2152 | asymbol **symbols; | |
7ed4093a SC |
2153 | { |
2154 | int r_index; | |
2155 | int r_extern; | |
2156 | unsigned int r_length; | |
2157 | int r_pcrel; | |
2158 | int r_baserel, r_jmptable, r_relative; | |
6db82ea7 | 2159 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
c188b0be | 2160 | int howto_idx; |
7ed4093a | 2161 | |
34dd8ba3 | 2162 | cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address); |
7ed4093a SC |
2163 | |
2164 | /* now the fun stuff */ | |
2165 | if (abfd->xvec->header_byteorder_big_p != false) { | |
382f2a3d ILT |
2166 | r_index = (bytes->r_index[0] << 16) |
2167 | | (bytes->r_index[1] << 8) | |
2168 | | bytes->r_index[2]; | |
7ed4093a SC |
2169 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); |
2170 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
2171 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
2172 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
2173 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
c188b0be | 2174 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) |
7ed4093a SC |
2175 | >> RELOC_STD_BITS_LENGTH_SH_BIG; |
2176 | } else { | |
382f2a3d ILT |
2177 | r_index = (bytes->r_index[2] << 16) |
2178 | | (bytes->r_index[1] << 8) | |
2179 | | bytes->r_index[0]; | |
7ed4093a SC |
2180 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); |
2181 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
2182 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
2183 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
2184 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
c188b0be | 2185 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) |
7ed4093a SC |
2186 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE; |
2187 | } | |
2188 | ||
cb9461ff JK |
2189 | howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel |
2190 | + 16 * r_jmptable + 32 * r_relative; | |
c188b0be DM |
2191 | BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std)); |
2192 | cache_ptr->howto = howto_table_std + howto_idx; | |
2193 | BFD_ASSERT (cache_ptr->howto->type != -1); | |
7ed4093a SC |
2194 | |
2195 | MOVE_ADDRESS(0); | |
2196 | } | |
2197 | ||
5c8444f8 | 2198 | /* Read and swap the relocs for a section. */ |
7ed4093a SC |
2199 | |
2200 | boolean | |
8eb5d4be JK |
2201 | NAME(aout,slurp_reloc_table) (abfd, asect, symbols) |
2202 | bfd *abfd; | |
2203 | sec_ptr asect; | |
2204 | asymbol **symbols; | |
7ed4093a SC |
2205 | { |
2206 | unsigned int count; | |
2207 | bfd_size_type reloc_size; | |
2208 | PTR relocs; | |
2209 | arelent *reloc_cache; | |
2210 | size_t each_size; | |
0ee75d02 ILT |
2211 | unsigned int counter = 0; |
2212 | arelent *cache_ptr; | |
7ed4093a | 2213 | |
5c8444f8 ILT |
2214 | if (asect->relocation) |
2215 | return true; | |
7ed4093a | 2216 | |
5c8444f8 ILT |
2217 | if (asect->flags & SEC_CONSTRUCTOR) |
2218 | return true; | |
7ed4093a | 2219 | |
0ee75d02 | 2220 | if (asect == obj_datasec (abfd)) |
7ed4093a | 2221 | reloc_size = exec_hdr(abfd)->a_drsize; |
0ee75d02 | 2222 | else if (asect == obj_textsec (abfd)) |
7ed4093a | 2223 | reloc_size = exec_hdr(abfd)->a_trsize; |
f42fe159 ILT |
2224 | else if (asect == obj_bsssec (abfd)) |
2225 | reloc_size = 0; | |
0ee75d02 ILT |
2226 | else |
2227 | { | |
68241b2b | 2228 | bfd_set_error (bfd_error_invalid_operation); |
0ee75d02 ILT |
2229 | return false; |
2230 | } | |
2231 | ||
5c8444f8 ILT |
2232 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) |
2233 | return false; | |
2234 | ||
7ed4093a SC |
2235 | each_size = obj_reloc_entry_size (abfd); |
2236 | ||
2237 | count = reloc_size / each_size; | |
2238 | ||
fa77c704 | 2239 | reloc_cache = (arelent *) malloc ((size_t) (count * sizeof (arelent))); |
5c8444f8 | 2240 | if (reloc_cache == NULL && count != 0) |
0ee75d02 | 2241 | { |
68241b2b | 2242 | bfd_set_error (bfd_error_no_memory); |
0ee75d02 ILT |
2243 | return false; |
2244 | } | |
fa77c704 | 2245 | memset (reloc_cache, 0, count * sizeof (arelent)); |
7ed4093a | 2246 | |
5c8444f8 ILT |
2247 | relocs = malloc (reloc_size); |
2248 | if (relocs == NULL && reloc_size != 0) | |
0ee75d02 | 2249 | { |
5c8444f8 ILT |
2250 | free (reloc_cache); |
2251 | bfd_set_error (bfd_error_no_memory); | |
2252 | return false; | |
0ee75d02 | 2253 | } |
7ed4093a | 2254 | |
0ee75d02 ILT |
2255 | if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) |
2256 | { | |
5c8444f8 ILT |
2257 | free (relocs); |
2258 | free (reloc_cache); | |
0ee75d02 ILT |
2259 | return false; |
2260 | } | |
7ed4093a | 2261 | |
0ee75d02 ILT |
2262 | cache_ptr = reloc_cache; |
2263 | if (each_size == RELOC_EXT_SIZE) | |
2264 | { | |
2265 | register struct reloc_ext_external *rptr = | |
2266 | (struct reloc_ext_external *) relocs; | |
7ed4093a | 2267 | |
0ee75d02 ILT |
2268 | for (; counter < count; counter++, rptr++, cache_ptr++) |
2269 | NAME(aout,swap_ext_reloc_in) (abfd, rptr, cache_ptr, symbols); | |
7ed4093a | 2270 | } |
0ee75d02 ILT |
2271 | else |
2272 | { | |
5c8444f8 ILT |
2273 | register struct reloc_std_external *rptr = |
2274 | (struct reloc_std_external *) relocs; | |
7ed4093a | 2275 | |
0ee75d02 | 2276 | for (; counter < count; counter++, rptr++, cache_ptr++) |
f42fe159 | 2277 | MY_swap_std_reloc_in(abfd, rptr, cache_ptr, symbols); |
7ed4093a SC |
2278 | } |
2279 | ||
5c8444f8 ILT |
2280 | free (relocs); |
2281 | ||
7ed4093a | 2282 | asect->relocation = reloc_cache; |
0ee75d02 | 2283 | asect->reloc_count = cache_ptr - reloc_cache; |
5c8444f8 | 2284 | |
7ed4093a SC |
2285 | return true; |
2286 | } | |
2287 | ||
7ed4093a SC |
2288 | /* Write out a relocation section into an object file. */ |
2289 | ||
2290 | boolean | |
8eb5d4be JK |
2291 | NAME(aout,squirt_out_relocs) (abfd, section) |
2292 | bfd *abfd; | |
2293 | asection *section; | |
7ed4093a SC |
2294 | { |
2295 | arelent **generic; | |
2296 | unsigned char *native, *natptr; | |
2297 | size_t each_size; | |
2298 | ||
2299 | unsigned int count = section->reloc_count; | |
2300 | size_t natsize; | |
2301 | ||
2302 | if (count == 0) return true; | |
2303 | ||
2304 | each_size = obj_reloc_entry_size (abfd); | |
2305 | natsize = each_size * count; | |
2306 | native = (unsigned char *) bfd_zalloc (abfd, natsize); | |
2307 | if (!native) { | |
68241b2b | 2308 | bfd_set_error (bfd_error_no_memory); |
7ed4093a SC |
2309 | return false; |
2310 | } | |
2311 | ||
2312 | generic = section->orelocation; | |
2313 | ||
c188b0be | 2314 | if (each_size == RELOC_EXT_SIZE) |
7ed4093a SC |
2315 | { |
2316 | for (natptr = native; | |
2317 | count != 0; | |
2318 | --count, natptr += each_size, ++generic) | |
2319 | NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr); | |
2320 | } | |
c188b0be | 2321 | else |
7ed4093a SC |
2322 | { |
2323 | for (natptr = native; | |
2324 | count != 0; | |
2325 | --count, natptr += each_size, ++generic) | |
f42fe159 | 2326 | MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr); |
7ed4093a SC |
2327 | } |
2328 | ||
2329 | if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) { | |
2330 | bfd_release(abfd, native); | |
2331 | return false; | |
2332 | } | |
2333 | bfd_release (abfd, native); | |
2334 | ||
2335 | return true; | |
2336 | } | |
2337 | ||
2338 | /* This is stupid. This function should be a boolean predicate */ | |
326e32d7 | 2339 | long |
8eb5d4be JK |
2340 | NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols) |
2341 | bfd *abfd; | |
2342 | sec_ptr section; | |
2343 | arelent **relptr; | |
2344 | asymbol **symbols; | |
7ed4093a SC |
2345 | { |
2346 | arelent *tblptr = section->relocation; | |
2347 | unsigned int count; | |
2348 | ||
4f019d04 ILT |
2349 | if (section == obj_bsssec (abfd)) |
2350 | { | |
2351 | *relptr = NULL; | |
2352 | return 0; | |
2353 | } | |
2354 | ||
7ed4093a | 2355 | if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols))) |
326e32d7 | 2356 | return -1; |
7ed4093a SC |
2357 | |
2358 | if (section->flags & SEC_CONSTRUCTOR) { | |
2359 | arelent_chain *chain = section->constructor_chain; | |
2360 | for (count = 0; count < section->reloc_count; count ++) { | |
2361 | *relptr ++ = &chain->relent; | |
2362 | chain = chain->next; | |
2363 | } | |
2364 | } | |
2365 | else { | |
2366 | tblptr = section->relocation; | |
7ed4093a | 2367 | |
c188b0be | 2368 | for (count = 0; count++ < section->reloc_count;) |
7ed4093a SC |
2369 | { |
2370 | *relptr++ = tblptr++; | |
2371 | } | |
2372 | } | |
2373 | *relptr = 0; | |
2374 | ||
2375 | return section->reloc_count; | |
2376 | } | |
2377 | ||
326e32d7 | 2378 | long |
8eb5d4be JK |
2379 | NAME(aout,get_reloc_upper_bound) (abfd, asect) |
2380 | bfd *abfd; | |
2381 | sec_ptr asect; | |
7ed4093a SC |
2382 | { |
2383 | if (bfd_get_format (abfd) != bfd_object) { | |
68241b2b | 2384 | bfd_set_error (bfd_error_invalid_operation); |
326e32d7 | 2385 | return -1; |
7ed4093a SC |
2386 | } |
2387 | if (asect->flags & SEC_CONSTRUCTOR) { | |
2388 | return (sizeof (arelent *) * (asect->reloc_count+1)); | |
2389 | } | |
2390 | ||
7ed4093a | 2391 | if (asect == obj_datasec (abfd)) |
fa77c704 ILT |
2392 | return (sizeof (arelent *) |
2393 | * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd)) | |
2394 | + 1)); | |
7ed4093a SC |
2395 | |
2396 | if (asect == obj_textsec (abfd)) | |
fa77c704 ILT |
2397 | return (sizeof (arelent *) |
2398 | * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd)) | |
2399 | + 1)); | |
7ed4093a | 2400 | |
4f019d04 ILT |
2401 | if (asect == obj_bsssec (abfd)) |
2402 | return sizeof (arelent *); | |
2403 | ||
f42fe159 ILT |
2404 | if (asect == obj_bsssec (abfd)) |
2405 | return 0; | |
2406 | ||
68241b2b | 2407 | bfd_set_error (bfd_error_invalid_operation); |
326e32d7 | 2408 | return -1; |
7ed4093a SC |
2409 | } |
2410 | ||
2411 | \f | |
326e32d7 | 2412 | long |
8eb5d4be JK |
2413 | NAME(aout,get_symtab_upper_bound) (abfd) |
2414 | bfd *abfd; | |
7ed4093a | 2415 | { |
326e32d7 ILT |
2416 | if (!NAME(aout,slurp_symbol_table)(abfd)) |
2417 | return -1; | |
7ed4093a SC |
2418 | |
2419 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
2420 | } | |
728472f1 ILT |
2421 | |
2422 | /*ARGSUSED*/ | |
7ed4093a | 2423 | alent * |
8eb5d4be JK |
2424 | NAME(aout,get_lineno) (ignore_abfd, ignore_symbol) |
2425 | bfd *ignore_abfd; | |
2426 | asymbol *ignore_symbol; | |
7ed4093a SC |
2427 | { |
2428 | return (alent *)NULL; | |
2429 | } | |
2430 | ||
728472f1 | 2431 | /*ARGSUSED*/ |
c188b0be | 2432 | void |
8eb5d4be JK |
2433 | NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret) |
2434 | bfd *ignore_abfd; | |
2435 | asymbol *symbol; | |
2436 | symbol_info *ret; | |
34dd8ba3 JG |
2437 | { |
2438 | bfd_symbol_info (symbol, ret); | |
2439 | ||
2440 | if (ret->type == '?') | |
2441 | { | |
2442 | int type_code = aout_symbol(symbol)->type & 0xff; | |
2443 | CONST char *stab_name = aout_stab_name(type_code); | |
2444 | static char buf[10]; | |
2445 | ||
2446 | if (stab_name == NULL) | |
2447 | { | |
2448 | sprintf(buf, "(%d)", type_code); | |
2449 | stab_name = buf; | |
2450 | } | |
2451 | ret->type = '-'; | |
2452 | ret->stab_other = (unsigned)(aout_symbol(symbol)->other & 0xff); | |
2453 | ret->stab_desc = (unsigned)(aout_symbol(symbol)->desc & 0xffff); | |
2454 | ret->stab_name = stab_name; | |
2455 | } | |
2456 | } | |
7ed4093a | 2457 | |
728472f1 | 2458 | /*ARGSUSED*/ |
c188b0be | 2459 | void |
8eb5d4be JK |
2460 | NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how) |
2461 | bfd *ignore_abfd; | |
2462 | PTR afile; | |
2463 | asymbol *symbol; | |
2464 | bfd_print_symbol_type how; | |
7ed4093a SC |
2465 | { |
2466 | FILE *file = (FILE *)afile; | |
2467 | ||
2468 | switch (how) { | |
9e2dad8e | 2469 | case bfd_print_symbol_name: |
fb3be09b JG |
2470 | if (symbol->name) |
2471 | fprintf(file,"%s", symbol->name); | |
7ed4093a | 2472 | break; |
9e2dad8e | 2473 | case bfd_print_symbol_more: |
7ed4093a SC |
2474 | fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff), |
2475 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
2476 | (unsigned)(aout_symbol(symbol)->type)); | |
2477 | break; | |
9e2dad8e | 2478 | case bfd_print_symbol_all: |
7ed4093a | 2479 | { |
6db82ea7 SC |
2480 | CONST char *section_name = symbol->section->name; |
2481 | ||
7ed4093a SC |
2482 | |
2483 | bfd_print_symbol_vandf((PTR)file,symbol); | |
2484 | ||
fb3be09b | 2485 | fprintf(file," %-5s %04x %02x %02x", |
7ed4093a SC |
2486 | section_name, |
2487 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
2488 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
9e2dad8e | 2489 | (unsigned)(aout_symbol(symbol)->type & 0xff)); |
fb3be09b JG |
2490 | if (symbol->name) |
2491 | fprintf(file," %s", symbol->name); | |
7ed4093a SC |
2492 | } |
2493 | break; | |
2494 | } | |
2495 | } | |
2496 | ||
c188b0be | 2497 | /* |
6724ff46 | 2498 | provided a BFD, a section and an offset into the section, calculate |
7ed4093a SC |
2499 | and return the name of the source file and the line nearest to the |
2500 | wanted location. | |
2501 | */ | |
c188b0be | 2502 | |
7ed4093a | 2503 | boolean |
8eb5d4be JK |
2504 | NAME(aout,find_nearest_line) |
2505 | (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr) | |
2506 | bfd *abfd; | |
2507 | asection *section; | |
2508 | asymbol **symbols; | |
2509 | bfd_vma offset; | |
2510 | CONST char **filename_ptr; | |
2511 | CONST char **functionname_ptr; | |
2512 | unsigned int *line_ptr; | |
7ed4093a SC |
2513 | { |
2514 | /* Run down the file looking for the filename, function and linenumber */ | |
2515 | asymbol **p; | |
2516 | static char buffer[100]; | |
98d43107 | 2517 | static char filename_buffer[200]; |
6db82ea7 SC |
2518 | CONST char *directory_name = NULL; |
2519 | CONST char *main_file_name = NULL; | |
2520 | CONST char *current_file_name = NULL; | |
2521 | CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */ | |
7ed4093a SC |
2522 | bfd_vma high_line_vma = ~0; |
2523 | bfd_vma low_func_vma = 0; | |
2524 | asymbol *func = 0; | |
2525 | *filename_ptr = abfd->filename; | |
2526 | *functionname_ptr = 0; | |
2527 | *line_ptr = 0; | |
2528 | if (symbols != (asymbol **)NULL) { | |
2529 | for (p = symbols; *p; p++) { | |
2530 | aout_symbol_type *q = (aout_symbol_type *)(*p); | |
98d43107 | 2531 | next: |
7ed4093a SC |
2532 | switch (q->type){ |
2533 | case N_SO: | |
3f7607af | 2534 | main_file_name = current_file_name = q->symbol.name; |
98d43107 JG |
2535 | /* Look ahead to next symbol to check if that too is an N_SO. */ |
2536 | p++; | |
2537 | if (*p == NULL) | |
2538 | break; | |
2539 | q = (aout_symbol_type *)(*p); | |
6db82ea7 | 2540 | if (q->type != (int)N_SO) |
98d43107 JG |
2541 | goto next; |
2542 | ||
2543 | /* Found a second N_SO First is directory; second is filename. */ | |
3f7607af PB |
2544 | directory_name = current_file_name; |
2545 | main_file_name = current_file_name = q->symbol.name; | |
2546 | if (obj_textsec(abfd) != section) | |
2547 | goto done; | |
2548 | break; | |
2549 | case N_SOL: | |
2550 | current_file_name = q->symbol.name; | |
7ed4093a | 2551 | break; |
3f7607af | 2552 | |
7ed4093a SC |
2553 | case N_SLINE: |
2554 | ||
2555 | case N_DSLINE: | |
2556 | case N_BSLINE: | |
2557 | /* We'll keep this if it resolves nearer than the one we have already */ | |
2558 | if (q->symbol.value >= offset && | |
2559 | q->symbol.value < high_line_vma) { | |
2560 | *line_ptr = q->desc; | |
2561 | high_line_vma = q->symbol.value; | |
3f7607af | 2562 | line_file_name = current_file_name; |
7ed4093a SC |
2563 | } |
2564 | break; | |
2565 | case N_FUN: | |
2566 | { | |
2567 | /* We'll keep this if it is nearer than the one we have already */ | |
2568 | if (q->symbol.value >= low_func_vma && | |
2569 | q->symbol.value <= offset) { | |
2570 | low_func_vma = q->symbol.value; | |
2571 | func = (asymbol *)q; | |
2572 | } | |
2573 | if (*line_ptr && func) { | |
2574 | CONST char *function = func->name; | |
2575 | char *p; | |
ec099b4b | 2576 | |
91f300d6 | 2577 | /* The caller expects a symbol name. We actually have a |
ec099b4b ILT |
2578 | function name, without the leading underscore. Put the |
2579 | underscore back in, so that the caller gets a symbol | |
2580 | name. */ | |
2581 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
2582 | strncpy (buffer, function, sizeof (buffer) - 1); | |
2583 | else | |
2584 | { | |
2585 | buffer[0] = bfd_get_symbol_leading_char (abfd); | |
2586 | strncpy (buffer + 1, function, sizeof (buffer) - 2); | |
2587 | } | |
7ed4093a SC |
2588 | buffer[sizeof(buffer)-1] = 0; |
2589 | /* Have to remove : stuff */ | |
2590 | p = strchr(buffer,':'); | |
7b02b4ed | 2591 | if (p != NULL) { *p = '\0'; } |
7ed4093a | 2592 | *functionname_ptr = buffer; |
3f7607af | 2593 | goto done; |
7ed4093a SC |
2594 | |
2595 | } | |
2596 | } | |
2597 | break; | |
2598 | } | |
2599 | } | |
2600 | } | |
3f7607af PB |
2601 | |
2602 | done: | |
2603 | if (*line_ptr) | |
2604 | main_file_name = line_file_name; | |
2605 | if (main_file_name) { | |
2606 | if (main_file_name[0] == '/' || directory_name == NULL) | |
2607 | *filename_ptr = main_file_name; | |
2608 | else { | |
2609 | sprintf(filename_buffer, "%.140s%.50s", | |
2610 | directory_name, main_file_name); | |
2611 | *filename_ptr = filename_buffer; | |
2612 | } | |
2613 | } | |
7ed4093a SC |
2614 | return true; |
2615 | ||
2616 | } | |
2617 | ||
728472f1 | 2618 | /*ARGSUSED*/ |
c188b0be | 2619 | int |
8eb5d4be JK |
2620 | NAME(aout,sizeof_headers) (abfd, execable) |
2621 | bfd *abfd; | |
2622 | boolean execable; | |
7ed4093a | 2623 | { |
6db82ea7 | 2624 | return adata(abfd).exec_bytes_size; |
7ed4093a | 2625 | } |
5c8444f8 ILT |
2626 | |
2627 | /* Free all information we have cached for this BFD. We can always | |
2628 | read it again later if we need it. */ | |
2629 | ||
2630 | boolean | |
2631 | NAME(aout,bfd_free_cached_info) (abfd) | |
2632 | bfd *abfd; | |
2633 | { | |
2634 | asection *o; | |
2635 | ||
c4dd531f ILT |
2636 | if (bfd_get_format (abfd) != bfd_object) |
2637 | return true; | |
2638 | ||
4852416e DHW |
2639 | #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } |
2640 | BFCI_FREE (obj_aout_symbols (abfd)); | |
2641 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2642 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
5c8444f8 | 2643 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
4852416e DHW |
2644 | BFCI_FREE (o->relocation); |
2645 | #undef BFCI_FREE | |
5c8444f8 ILT |
2646 | |
2647 | return true; | |
2648 | } | |
4c3721d5 ILT |
2649 | \f |
2650 | /* a.out link code. */ | |
2651 | ||
4c3721d5 ILT |
2652 | static boolean aout_link_add_object_symbols |
2653 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2654 | static boolean aout_link_check_archive_element | |
2655 | PARAMS ((bfd *, struct bfd_link_info *, boolean *)); | |
4c3721d5 ILT |
2656 | static boolean aout_link_free_symbols PARAMS ((bfd *)); |
2657 | static boolean aout_link_check_ar_symbols | |
2658 | PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded)); | |
2659 | static boolean aout_link_add_symbols | |
2660 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2661 | ||
2662 | /* Routine to create an entry in an a.out link hash table. */ | |
2663 | ||
e85e8bfe ILT |
2664 | struct bfd_hash_entry * |
2665 | NAME(aout,link_hash_newfunc) (entry, table, string) | |
4c3721d5 ILT |
2666 | struct bfd_hash_entry *entry; |
2667 | struct bfd_hash_table *table; | |
2668 | const char *string; | |
2669 | { | |
2670 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2671 | ||
2672 | /* Allocate the structure if it has not already been allocated by a | |
2673 | subclass. */ | |
2674 | if (ret == (struct aout_link_hash_entry *) NULL) | |
2675 | ret = ((struct aout_link_hash_entry *) | |
2676 | bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry))); | |
9783e04a DM |
2677 | if (ret == (struct aout_link_hash_entry *) NULL) |
2678 | { | |
68241b2b | 2679 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
2680 | return (struct bfd_hash_entry *) ret; |
2681 | } | |
4c3721d5 ILT |
2682 | |
2683 | /* Call the allocation method of the superclass. */ | |
2684 | ret = ((struct aout_link_hash_entry *) | |
2685 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2686 | table, string)); | |
9783e04a | 2687 | if (ret) |
35fee729 ILT |
2688 | { |
2689 | /* Set local fields. */ | |
2690 | ret->written = false; | |
2691 | ret->indx = -1; | |
2692 | } | |
4c3721d5 ILT |
2693 | |
2694 | return (struct bfd_hash_entry *) ret; | |
2695 | } | |
2696 | ||
e85e8bfe ILT |
2697 | /* Initialize an a.out link hash table. */ |
2698 | ||
2699 | boolean | |
2700 | NAME(aout,link_hash_table_init) (table, abfd, newfunc) | |
2701 | struct aout_link_hash_table *table; | |
2702 | bfd *abfd; | |
2703 | struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, | |
2704 | struct bfd_hash_table *, | |
2705 | const char *)); | |
2706 | { | |
2707 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
2708 | } | |
2709 | ||
4c3721d5 ILT |
2710 | /* Create an a.out link hash table. */ |
2711 | ||
2712 | struct bfd_link_hash_table * | |
2713 | NAME(aout,link_hash_table_create) (abfd) | |
2714 | bfd *abfd; | |
2715 | { | |
2716 | struct aout_link_hash_table *ret; | |
2717 | ||
2718 | ret = ((struct aout_link_hash_table *) | |
9783e04a DM |
2719 | malloc (sizeof (struct aout_link_hash_table))); |
2720 | if (ret == (struct aout_link_hash_table *) NULL) | |
2721 | { | |
68241b2b | 2722 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
2723 | return (struct bfd_link_hash_table *) NULL; |
2724 | } | |
e85e8bfe ILT |
2725 | if (! NAME(aout,link_hash_table_init) (ret, abfd, |
2726 | NAME(aout,link_hash_newfunc))) | |
4c3721d5 ILT |
2727 | { |
2728 | free (ret); | |
2729 | return (struct bfd_link_hash_table *) NULL; | |
2730 | } | |
2731 | return &ret->root; | |
2732 | } | |
2733 | ||
4c3721d5 ILT |
2734 | /* Given an a.out BFD, add symbols to the global hash table as |
2735 | appropriate. */ | |
2736 | ||
2737 | boolean | |
2738 | NAME(aout,link_add_symbols) (abfd, info) | |
2739 | bfd *abfd; | |
2740 | struct bfd_link_info *info; | |
2741 | { | |
82b1edf7 KR |
2742 | bfd *first; |
2743 | ||
4c3721d5 ILT |
2744 | switch (bfd_get_format (abfd)) |
2745 | { | |
2746 | case bfd_object: | |
2747 | return aout_link_add_object_symbols (abfd, info); | |
2748 | case bfd_archive: | |
82b1edf7 KR |
2749 | first = bfd_openr_next_archived_file (abfd, (bfd *) NULL); |
2750 | if (first == NULL) | |
2751 | return false; | |
2752 | if (! bfd_check_format (first, bfd_object)) | |
2753 | return false; | |
2754 | if (bfd_get_flavour (first) != bfd_target_aout_flavour) | |
2755 | { | |
2756 | /* On Linux, we may have an ELF archive which got recognized | |
2757 | as an a.out archive. Therefore, we treat all archives as | |
2758 | though they were actually of the flavour of their first | |
2759 | element. */ | |
2760 | return (*first->xvec->_bfd_link_add_symbols) (abfd, info); | |
2761 | } | |
4c3721d5 ILT |
2762 | return _bfd_generic_link_add_archive_symbols |
2763 | (abfd, info, aout_link_check_archive_element); | |
2764 | default: | |
68241b2b | 2765 | bfd_set_error (bfd_error_wrong_format); |
4c3721d5 ILT |
2766 | return false; |
2767 | } | |
2768 | } | |
2769 | ||
2770 | /* Add symbols from an a.out object file. */ | |
2771 | ||
2772 | static boolean | |
2773 | aout_link_add_object_symbols (abfd, info) | |
2774 | bfd *abfd; | |
2775 | struct bfd_link_info *info; | |
2776 | { | |
5c8444f8 | 2777 | if (! aout_get_external_symbols (abfd)) |
4c3721d5 ILT |
2778 | return false; |
2779 | if (! aout_link_add_symbols (abfd, info)) | |
2780 | return false; | |
2781 | if (! info->keep_memory) | |
2782 | { | |
2783 | if (! aout_link_free_symbols (abfd)) | |
2784 | return false; | |
2785 | } | |
2786 | return true; | |
2787 | } | |
2788 | ||
2789 | /* Check a single archive element to see if we need to include it in | |
2790 | the link. *PNEEDED is set according to whether this element is | |
2791 | needed in the link or not. This is called from | |
2792 | _bfd_generic_link_add_archive_symbols. */ | |
2793 | ||
2794 | static boolean | |
2795 | aout_link_check_archive_element (abfd, info, pneeded) | |
2796 | bfd *abfd; | |
2797 | struct bfd_link_info *info; | |
2798 | boolean *pneeded; | |
2799 | { | |
5c8444f8 | 2800 | if (! aout_get_external_symbols (abfd)) |
4c3721d5 ILT |
2801 | return false; |
2802 | ||
2803 | if (! aout_link_check_ar_symbols (abfd, info, pneeded)) | |
2804 | return false; | |
2805 | ||
2806 | if (*pneeded) | |
2807 | { | |
2808 | if (! aout_link_add_symbols (abfd, info)) | |
2809 | return false; | |
2810 | } | |
2811 | ||
1afd2380 | 2812 | if (! info->keep_memory || ! *pneeded) |
4c3721d5 ILT |
2813 | { |
2814 | if (! aout_link_free_symbols (abfd)) | |
2815 | return false; | |
2816 | } | |
2817 | ||
2818 | return true; | |
2819 | } | |
2820 | ||
4c3721d5 ILT |
2821 | /* Free up the internal symbols read from an a.out file. */ |
2822 | ||
2823 | static boolean | |
2824 | aout_link_free_symbols (abfd) | |
2825 | bfd *abfd; | |
2826 | { | |
2827 | if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) | |
2828 | { | |
2829 | free ((PTR) obj_aout_external_syms (abfd)); | |
2830 | obj_aout_external_syms (abfd) = (struct external_nlist *) NULL; | |
2831 | } | |
2832 | if (obj_aout_external_strings (abfd) != (char *) NULL) | |
2833 | { | |
2834 | free ((PTR) obj_aout_external_strings (abfd)); | |
2835 | obj_aout_external_strings (abfd) = (char *) NULL; | |
2836 | } | |
2837 | return true; | |
2838 | } | |
2839 | ||
2840 | /* Look through the internal symbols to see if this object file should | |
2841 | be included in the link. We should include this object file if it | |
2842 | defines any symbols which are currently undefined. If this object | |
2843 | file defines a common symbol, then we may adjust the size of the | |
2844 | known symbol but we do not include the object file in the link | |
2845 | (unless there is some other reason to include it). */ | |
2846 | ||
2847 | static boolean | |
2848 | aout_link_check_ar_symbols (abfd, info, pneeded) | |
2849 | bfd *abfd; | |
2850 | struct bfd_link_info *info; | |
2851 | boolean *pneeded; | |
2852 | { | |
2853 | register struct external_nlist *p; | |
2854 | struct external_nlist *pend; | |
2855 | char *strings; | |
2856 | ||
2857 | *pneeded = false; | |
2858 | ||
2859 | /* Look through all the symbols. */ | |
2860 | p = obj_aout_external_syms (abfd); | |
2861 | pend = p + obj_aout_external_sym_count (abfd); | |
2862 | strings = obj_aout_external_strings (abfd); | |
2863 | for (; p < pend; p++) | |
2864 | { | |
2865 | int type = bfd_h_get_8 (abfd, p->e_type); | |
2866 | const char *name; | |
2867 | struct bfd_link_hash_entry *h; | |
2868 | ||
4298e311 ILT |
2869 | /* Ignore symbols that are not externally visible. This is an |
2870 | optimization only, as we check the type more thoroughly | |
2871 | below. */ | |
4587b578 ILT |
2872 | if (((type & N_EXT) == 0 |
2873 | || (type & N_STAB) != 0 | |
2874 | || type == N_FN) | |
4298e311 ILT |
2875 | && type != N_WEAKA |
2876 | && type != N_WEAKT | |
2877 | && type != N_WEAKD | |
2878 | && type != N_WEAKB) | |
9b39ed6b ILT |
2879 | { |
2880 | if (type == N_WARNING | |
2881 | || type == N_INDR) | |
2882 | ++p; | |
2883 | continue; | |
2884 | } | |
4c3721d5 ILT |
2885 | |
2886 | name = strings + GET_WORD (abfd, p->e_strx); | |
2887 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); | |
2888 | ||
2889 | /* We are only interested in symbols that are currently | |
2890 | undefined or common. */ | |
2891 | if (h == (struct bfd_link_hash_entry *) NULL | |
2892 | || (h->type != bfd_link_hash_undefined | |
2893 | && h->type != bfd_link_hash_common)) | |
9b39ed6b ILT |
2894 | { |
2895 | if (type == (N_INDR | N_EXT)) | |
2896 | ++p; | |
2897 | continue; | |
2898 | } | |
4c3721d5 | 2899 | |
9b39ed6b ILT |
2900 | if (type == (N_TEXT | N_EXT) |
2901 | || type == (N_DATA | N_EXT) | |
2902 | || type == (N_BSS | N_EXT) | |
2903 | || type == (N_ABS | N_EXT) | |
2904 | || type == (N_INDR | N_EXT)) | |
4c3721d5 ILT |
2905 | { |
2906 | /* This object file defines this symbol. We must link it | |
2907 | in. This is true regardless of whether the current | |
2908 | definition of the symbol is undefined or common. If the | |
2909 | current definition is common, we have a case in which we | |
2910 | have already seen an object file including | |
2911 | int a; | |
2912 | and this object file from the archive includes | |
2913 | int a = 5; | |
f88c9008 ILT |
2914 | In such a case we must include this object file. |
2915 | ||
2916 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
2917 | element if the symbol is defined in the .data section, | |
2918 | but not if it is defined in the .text section. That | |
2919 | seems a bit crazy to me, and I haven't implemented it. | |
2920 | However, it might be correct. */ | |
4c3721d5 ILT |
2921 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) |
2922 | return false; | |
2923 | *pneeded = true; | |
2924 | return true; | |
2925 | } | |
2926 | ||
9b39ed6b | 2927 | if (type == (N_UNDF | N_EXT)) |
4c3721d5 ILT |
2928 | { |
2929 | bfd_vma value; | |
2930 | ||
2931 | value = GET_WORD (abfd, p->e_value); | |
2932 | if (value != 0) | |
2933 | { | |
2934 | /* This symbol is common in the object from the archive | |
2935 | file. */ | |
2936 | if (h->type == bfd_link_hash_undefined) | |
2937 | { | |
2938 | bfd *symbfd; | |
e1f99f60 | 2939 | unsigned int power; |
4c3721d5 ILT |
2940 | |
2941 | symbfd = h->u.undef.abfd; | |
2942 | if (symbfd == (bfd *) NULL) | |
2943 | { | |
2944 | /* This symbol was created as undefined from | |
2945 | outside BFD. We assume that we should link | |
2946 | in the object file. This is done for the -u | |
2947 | option in the linker. */ | |
2948 | if (! (*info->callbacks->add_archive_element) (info, | |
2949 | abfd, | |
2950 | name)) | |
2951 | return false; | |
2952 | *pneeded = true; | |
2953 | return true; | |
2954 | } | |
2955 | /* Turn the current link symbol into a common | |
2956 | symbol. It is already on the undefs list. */ | |
2957 | h->type = bfd_link_hash_common; | |
2958 | h->u.c.size = value; | |
e1f99f60 ILT |
2959 | if (h->u.c.size != value) |
2960 | { | |
2961 | /* The size did not fit in the bitfield. */ | |
2962 | bfd_set_error (bfd_error_bad_value); | |
2963 | return false; | |
2964 | } | |
2965 | ||
2966 | /* FIXME: This isn't quite right. The maximum | |
2967 | alignment of a common symbol should be set by the | |
2968 | architecture of the output file, not of the input | |
2969 | file. */ | |
2970 | power = bfd_log2 (value); | |
2971 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
2972 | power = bfd_get_arch_info (abfd)->section_align_power; | |
2973 | h->u.c.alignment_power = power; | |
2974 | ||
4c3721d5 ILT |
2975 | h->u.c.section = bfd_make_section_old_way (symbfd, |
2976 | "COMMON"); | |
2977 | } | |
2978 | else | |
2979 | { | |
2980 | /* Adjust the size of the common symbol if | |
2981 | necessary. */ | |
2982 | if (value > h->u.c.size) | |
2983 | h->u.c.size = value; | |
2984 | } | |
2985 | } | |
2986 | } | |
4298e311 ILT |
2987 | |
2988 | if (type == N_WEAKA | |
2989 | || type == N_WEAKT | |
2990 | || type == N_WEAKD | |
2991 | || type == N_WEAKB) | |
2992 | { | |
2993 | /* This symbol is weak but defined. We must pull it in if | |
2994 | the current link symbol is undefined, but we don't want | |
2995 | it if the current link symbol is common. */ | |
2996 | if (h->type == bfd_link_hash_undefined) | |
2997 | { | |
2998 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) | |
2999 | return false; | |
3000 | *pneeded = true; | |
3001 | return true; | |
3002 | } | |
3003 | } | |
4c3721d5 ILT |
3004 | } |
3005 | ||
3006 | /* We do not need this object file. */ | |
3007 | return true; | |
3008 | } | |
3009 | ||
3010 | /* Add all symbols from an object file to the hash table. */ | |
3011 | ||
3012 | static boolean | |
3013 | aout_link_add_symbols (abfd, info) | |
3014 | bfd *abfd; | |
3015 | struct bfd_link_info *info; | |
3016 | { | |
e85e8bfe ILT |
3017 | boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *, |
3018 | const char *, flagword, asection *, | |
3019 | bfd_vma, const char *, boolean, | |
3020 | boolean, | |
3021 | struct bfd_link_hash_entry **)); | |
4c3721d5 ILT |
3022 | bfd_size_type sym_count; |
3023 | char *strings; | |
3024 | boolean copy; | |
3025 | struct aout_link_hash_entry **sym_hash; | |
3026 | register struct external_nlist *p; | |
3027 | struct external_nlist *pend; | |
3028 | ||
3029 | sym_count = obj_aout_external_sym_count (abfd); | |
3030 | strings = obj_aout_external_strings (abfd); | |
3031 | if (info->keep_memory) | |
3032 | copy = false; | |
3033 | else | |
3034 | copy = true; | |
3035 | ||
4c3721d5 ILT |
3036 | /* We keep a list of the linker hash table entries that correspond |
3037 | to particular symbols. We could just look them up in the hash | |
3038 | table, but keeping the list is more efficient. Perhaps this | |
3039 | should be conditional on info->keep_memory. */ | |
3040 | sym_hash = ((struct aout_link_hash_entry **) | |
3041 | bfd_alloc (abfd, | |
3042 | ((size_t) sym_count | |
3043 | * sizeof (struct aout_link_hash_entry *)))); | |
e85e8bfe | 3044 | if (sym_hash == NULL && sym_count != 0) |
9783e04a | 3045 | { |
68241b2b | 3046 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
3047 | return false; |
3048 | } | |
4c3721d5 ILT |
3049 | obj_aout_sym_hashes (abfd) = sym_hash; |
3050 | ||
e85e8bfe ILT |
3051 | if ((abfd->flags & DYNAMIC) != 0 |
3052 | && aout_backend_info (abfd)->add_dynamic_symbols != NULL) | |
3053 | { | |
3054 | if (! (*aout_backend_info (abfd)->add_dynamic_symbols) (abfd, info)) | |
3055 | return false; | |
3056 | } | |
3057 | ||
3058 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; | |
3059 | if (add_one_symbol == NULL) | |
3060 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
3061 | ||
4c3721d5 ILT |
3062 | p = obj_aout_external_syms (abfd); |
3063 | pend = p + sym_count; | |
3064 | for (; p < pend; p++, sym_hash++) | |
3065 | { | |
3066 | int type; | |
3067 | const char *name; | |
3068 | bfd_vma value; | |
3069 | asection *section; | |
3070 | flagword flags; | |
3071 | const char *string; | |
3072 | ||
3073 | *sym_hash = NULL; | |
3074 | ||
3075 | type = bfd_h_get_8 (abfd, p->e_type); | |
3076 | ||
3077 | /* Ignore debugging symbols. */ | |
3078 | if ((type & N_STAB) != 0) | |
3079 | continue; | |
3080 | ||
4c3721d5 ILT |
3081 | name = strings + GET_WORD (abfd, p->e_strx); |
3082 | value = GET_WORD (abfd, p->e_value); | |
3083 | flags = BSF_GLOBAL; | |
3084 | string = NULL; | |
3085 | switch (type) | |
3086 | { | |
3087 | default: | |
3088 | abort (); | |
4298e311 ILT |
3089 | |
3090 | case N_UNDF: | |
3091 | case N_ABS: | |
3092 | case N_TEXT: | |
3093 | case N_DATA: | |
3094 | case N_BSS: | |
3095 | case N_FN_SEQ: | |
3096 | case N_COMM: | |
3097 | case N_SETV: | |
3098 | case N_FN: | |
3099 | /* Ignore symbols that are not externally visible. */ | |
3100 | continue; | |
3101 | case N_INDR: | |
3102 | /* Ignore local indirect symbol. */ | |
3103 | ++p; | |
3104 | ++sym_hash; | |
3105 | continue; | |
3106 | ||
4c3721d5 | 3107 | case N_UNDF | N_EXT: |
4298e311 ILT |
3108 | if (value == 0) |
3109 | { | |
4587b578 | 3110 | section = bfd_und_section_ptr; |
4298e311 ILT |
3111 | flags = 0; |
3112 | } | |
4c3721d5 | 3113 | else |
4587b578 | 3114 | section = bfd_com_section_ptr; |
4c3721d5 ILT |
3115 | break; |
3116 | case N_ABS | N_EXT: | |
4587b578 | 3117 | section = bfd_abs_section_ptr; |
4c3721d5 ILT |
3118 | break; |
3119 | case N_TEXT | N_EXT: | |
3120 | section = obj_textsec (abfd); | |
3121 | value -= bfd_get_section_vma (abfd, section); | |
3122 | break; | |
3123 | case N_DATA | N_EXT: | |
2cd086e3 ILT |
3124 | case N_SETV | N_EXT: |
3125 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
3126 | translate_from_native_sym_flags. */ | |
4c3721d5 ILT |
3127 | section = obj_datasec (abfd); |
3128 | value -= bfd_get_section_vma (abfd, section); | |
3129 | break; | |
3130 | case N_BSS | N_EXT: | |
3131 | section = obj_bsssec (abfd); | |
3132 | value -= bfd_get_section_vma (abfd, section); | |
3133 | break; | |
3134 | case N_INDR | N_EXT: | |
3135 | /* An indirect symbol. The next symbol is the symbol | |
3136 | which this one really is. */ | |
3137 | BFD_ASSERT (p + 1 < pend); | |
3138 | ++p; | |
3139 | string = strings + GET_WORD (abfd, p->e_strx); | |
4587b578 | 3140 | section = bfd_ind_section_ptr; |
4c3721d5 ILT |
3141 | flags |= BSF_INDIRECT; |
3142 | break; | |
3143 | case N_COMM | N_EXT: | |
4587b578 | 3144 | section = bfd_com_section_ptr; |
4c3721d5 | 3145 | break; |
964affdc | 3146 | case N_SETA: case N_SETA | N_EXT: |
4587b578 | 3147 | section = bfd_abs_section_ptr; |
4c3721d5 ILT |
3148 | flags |= BSF_CONSTRUCTOR; |
3149 | break; | |
964affdc | 3150 | case N_SETT: case N_SETT | N_EXT: |
4c3721d5 ILT |
3151 | section = obj_textsec (abfd); |
3152 | flags |= BSF_CONSTRUCTOR; | |
3153 | value -= bfd_get_section_vma (abfd, section); | |
3154 | break; | |
964affdc | 3155 | case N_SETD: case N_SETD | N_EXT: |
4c3721d5 ILT |
3156 | section = obj_datasec (abfd); |
3157 | flags |= BSF_CONSTRUCTOR; | |
3158 | value -= bfd_get_section_vma (abfd, section); | |
3159 | break; | |
964affdc | 3160 | case N_SETB: case N_SETB | N_EXT: |
4c3721d5 ILT |
3161 | section = obj_bsssec (abfd); |
3162 | flags |= BSF_CONSTRUCTOR; | |
3163 | value -= bfd_get_section_vma (abfd, section); | |
3164 | break; | |
3165 | case N_WARNING: | |
3166 | /* A warning symbol. The next symbol is the one to warn | |
3167 | about. */ | |
3168 | BFD_ASSERT (p + 1 < pend); | |
3169 | ++p; | |
3170 | string = name; | |
3171 | name = strings + GET_WORD (abfd, p->e_strx); | |
4587b578 | 3172 | section = bfd_und_section_ptr; |
4c3721d5 ILT |
3173 | flags |= BSF_WARNING; |
3174 | break; | |
4298e311 | 3175 | case N_WEAKU: |
4587b578 | 3176 | section = bfd_und_section_ptr; |
4298e311 ILT |
3177 | flags = BSF_WEAK; |
3178 | break; | |
3179 | case N_WEAKA: | |
4587b578 | 3180 | section = bfd_abs_section_ptr; |
4298e311 ILT |
3181 | flags = BSF_WEAK; |
3182 | break; | |
3183 | case N_WEAKT: | |
3184 | section = obj_textsec (abfd); | |
3185 | value -= bfd_get_section_vma (abfd, section); | |
3186 | flags = BSF_WEAK; | |
3187 | break; | |
3188 | case N_WEAKD: | |
3189 | section = obj_datasec (abfd); | |
3190 | value -= bfd_get_section_vma (abfd, section); | |
3191 | flags = BSF_WEAK; | |
3192 | break; | |
3193 | case N_WEAKB: | |
3194 | section = obj_bsssec (abfd); | |
3195 | value -= bfd_get_section_vma (abfd, section); | |
3196 | flags = BSF_WEAK; | |
3197 | break; | |
4c3721d5 ILT |
3198 | } |
3199 | ||
e85e8bfe | 3200 | if (! ((*add_one_symbol) |
e68de5d5 | 3201 | (info, abfd, name, flags, section, value, string, copy, false, |
ec099b4b | 3202 | (struct bfd_link_hash_entry **) sym_hash))) |
4c3721d5 | 3203 | return false; |
53155af1 | 3204 | |
e1f99f60 ILT |
3205 | /* Restrict the maximum alignment of a common symbol based on |
3206 | the architecture, since a.out has no way to represent | |
3207 | alignment requirements of a section in a .o file. FIXME: | |
3208 | This isn't quite right: it should use the architecture of the | |
3209 | output file, not the input files. */ | |
3210 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
3211 | && ((*sym_hash)->root.u.c.alignment_power > | |
3212 | bfd_get_arch_info (abfd)->section_align_power)) | |
3213 | (*sym_hash)->root.u.c.alignment_power = | |
3214 | bfd_get_arch_info (abfd)->section_align_power; | |
3215 | ||
f4945271 ILT |
3216 | /* If this is a set symbol, and we are not building sets, then |
3217 | it is possible for the hash entry to not have been set. In | |
3218 | such a case, treat the symbol as not globally defined. */ | |
3219 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
3220 | { | |
3221 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
3222 | *sym_hash = NULL; | |
3223 | } | |
3224 | ||
53155af1 ILT |
3225 | if (type == (N_INDR | N_EXT) || type == N_WARNING) |
3226 | ++sym_hash; | |
4c3721d5 ILT |
3227 | } |
3228 | ||
3229 | return true; | |
3230 | } | |
3231 | ||
3232 | /* During the final link step we need to pass around a bunch of | |
3233 | information, so we do it in an instance of this structure. */ | |
3234 | ||
3235 | struct aout_final_link_info | |
3236 | { | |
3237 | /* General link information. */ | |
3238 | struct bfd_link_info *info; | |
3239 | /* Output bfd. */ | |
3240 | bfd *output_bfd; | |
3241 | /* Reloc file positions. */ | |
3242 | file_ptr treloff, dreloff; | |
3243 | /* File position of symbols. */ | |
3244 | file_ptr symoff; | |
3245 | /* String table. */ | |
1afd2380 ILT |
3246 | struct bfd_strtab_hash *strtab; |
3247 | /* A buffer large enough to hold the contents of any section. */ | |
3248 | bfd_byte *contents; | |
3249 | /* A buffer large enough to hold the relocs of any section. */ | |
3250 | PTR relocs; | |
3251 | /* A buffer large enough to hold the symbol map of any input BFD. */ | |
3252 | int *symbol_map; | |
3253 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
3254 | struct external_nlist *output_syms; | |
4c3721d5 ILT |
3255 | }; |
3256 | ||
3257 | static boolean aout_link_input_bfd | |
3258 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); | |
3259 | static boolean aout_link_write_symbols | |
1afd2380 | 3260 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); |
4c3721d5 ILT |
3261 | static boolean aout_link_write_other_symbol |
3262 | PARAMS ((struct aout_link_hash_entry *, PTR)); | |
3263 | static boolean aout_link_input_section | |
3264 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, | |
3265 | asection *input_section, file_ptr *reloff_ptr, | |
1afd2380 | 3266 | bfd_size_type rel_size)); |
4c3721d5 ILT |
3267 | static boolean aout_link_input_section_std |
3268 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, | |
3269 | asection *input_section, struct reloc_std_external *, | |
1afd2380 | 3270 | bfd_size_type rel_size, bfd_byte *contents)); |
4c3721d5 ILT |
3271 | static boolean aout_link_input_section_ext |
3272 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, | |
3273 | asection *input_section, struct reloc_ext_external *, | |
1afd2380 | 3274 | bfd_size_type rel_size, bfd_byte *contents)); |
4c3721d5 ILT |
3275 | static INLINE asection *aout_reloc_index_to_section |
3276 | PARAMS ((bfd *, int)); | |
ec099b4b ILT |
3277 | static boolean aout_link_reloc_link_order |
3278 | PARAMS ((struct aout_final_link_info *, asection *, | |
3279 | struct bfd_link_order *)); | |
4c3721d5 ILT |
3280 | |
3281 | /* Do the final link step. This is called on the output BFD. The | |
3282 | INFO structure should point to a list of BFDs linked through the | |
3283 | link_next field which can be used to find each BFD which takes part | |
3284 | in the output. Also, each section in ABFD should point to a list | |
3285 | of bfd_link_order structures which list all the input sections for | |
3286 | the output section. */ | |
3287 | ||
3288 | boolean | |
3289 | NAME(aout,final_link) (abfd, info, callback) | |
3290 | bfd *abfd; | |
3291 | struct bfd_link_info *info; | |
3292 | void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *)); | |
3293 | { | |
3294 | struct aout_final_link_info aout_info; | |
3295 | register bfd *sub; | |
1afd2380 ILT |
3296 | bfd_size_type trsize, drsize; |
3297 | size_t max_contents_size; | |
3298 | size_t max_relocs_size; | |
3299 | size_t max_sym_count; | |
4c3721d5 ILT |
3300 | bfd_size_type text_size; |
3301 | file_ptr text_end; | |
3302 | register struct bfd_link_order *p; | |
3303 | asection *o; | |
ec099b4b | 3304 | boolean have_link_order_relocs; |
4c3721d5 ILT |
3305 | |
3306 | aout_info.info = info; | |
3307 | aout_info.output_bfd = abfd; | |
1afd2380 ILT |
3308 | aout_info.contents = NULL; |
3309 | aout_info.relocs = NULL; | |
3310 | ||
3311 | /* Figure out the largest section size. Also, if generating | |
3312 | relocateable output, count the relocs. */ | |
3313 | trsize = 0; | |
3314 | drsize = 0; | |
3315 | max_contents_size = 0; | |
3316 | max_relocs_size = 0; | |
3317 | max_sym_count = 0; | |
3318 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
4c3721d5 | 3319 | { |
1afd2380 | 3320 | size_t sz; |
4c3721d5 | 3321 | |
1afd2380 | 3322 | if (info->relocateable) |
4c3721d5 | 3323 | { |
6c8fa8e6 | 3324 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
4c3721d5 ILT |
3325 | { |
3326 | trsize += exec_hdr (sub)->a_trsize; | |
3327 | drsize += exec_hdr (sub)->a_drsize; | |
3328 | } | |
3329 | else | |
3330 | { | |
3331 | /* FIXME: We need to identify the .text and .data sections | |
3332 | and call get_reloc_upper_bound and canonicalize_reloc to | |
3333 | work out the number of relocs needed, and then multiply | |
3334 | by the reloc size. */ | |
3335 | abort (); | |
3336 | } | |
3337 | } | |
1afd2380 | 3338 | |
204ba9e3 ILT |
3339 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
3340 | { | |
3341 | sz = bfd_section_size (sub, obj_textsec (sub)); | |
3342 | if (sz > max_contents_size) | |
3343 | max_contents_size = sz; | |
3344 | sz = bfd_section_size (sub, obj_datasec (sub)); | |
3345 | if (sz > max_contents_size) | |
3346 | max_contents_size = sz; | |
3347 | ||
3348 | sz = exec_hdr (sub)->a_trsize; | |
3349 | if (sz > max_relocs_size) | |
3350 | max_relocs_size = sz; | |
3351 | sz = exec_hdr (sub)->a_drsize; | |
3352 | if (sz > max_relocs_size) | |
3353 | max_relocs_size = sz; | |
3354 | ||
3355 | sz = obj_aout_external_sym_count (sub); | |
3356 | if (sz > max_sym_count) | |
3357 | max_sym_count = sz; | |
3358 | } | |
1afd2380 ILT |
3359 | } |
3360 | ||
3361 | if (info->relocateable) | |
3362 | { | |
ec6b18c4 ILT |
3363 | if (obj_textsec (abfd) != (asection *) NULL) |
3364 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
3365 | ->link_order_head) | |
3366 | * obj_reloc_entry_size (abfd)); | |
ec6b18c4 ILT |
3367 | if (obj_datasec (abfd) != (asection *) NULL) |
3368 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
3369 | ->link_order_head) | |
3370 | * obj_reloc_entry_size (abfd)); | |
4c3721d5 ILT |
3371 | } |
3372 | ||
1afd2380 ILT |
3373 | exec_hdr (abfd)->a_trsize = trsize; |
3374 | exec_hdr (abfd)->a_drsize = drsize; | |
3375 | ||
964affdc DM |
3376 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); |
3377 | ||
4c3721d5 ILT |
3378 | /* Adjust the section sizes and vmas according to the magic number. |
3379 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
3380 | filepos for each section. */ | |
3381 | if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) | |
1afd2380 | 3382 | goto error_return; |
4c3721d5 ILT |
3383 | |
3384 | /* The relocation and symbol file positions differ among a.out | |
3385 | targets. We are passed a callback routine from the backend | |
3386 | specific code to handle this. | |
3387 | FIXME: At this point we do not know how much space the symbol | |
3388 | table will require. This will not work for any (nonstandard) | |
3389 | a.out target that needs to know the symbol table size before it | |
3390 | can compute the relocation file positions. This may or may not | |
3391 | be the case for the hp300hpux target, for example. */ | |
3392 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, | |
3393 | &aout_info.symoff); | |
3394 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
3395 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
3396 | obj_sym_filepos (abfd) = aout_info.symoff; | |
3397 | ||
3398 | /* We keep a count of the symbols as we output them. */ | |
3399 | obj_aout_external_sym_count (abfd) = 0; | |
3400 | ||
3401 | /* We accumulate the string table as we write out the symbols. */ | |
1afd2380 ILT |
3402 | aout_info.strtab = _bfd_stringtab_init (); |
3403 | if (aout_info.strtab == NULL) | |
3404 | goto error_return; | |
3405 | ||
3406 | /* Allocate buffers to hold section contents and relocs. */ | |
3407 | aout_info.contents = (bfd_byte *) malloc (max_contents_size); | |
3408 | aout_info.relocs = (PTR) malloc (max_relocs_size); | |
3409 | aout_info.symbol_map = (int *) malloc (max_sym_count * sizeof (int *)); | |
3410 | aout_info.output_syms = ((struct external_nlist *) | |
3411 | malloc ((max_sym_count + 1) | |
3412 | * sizeof (struct external_nlist))); | |
3413 | if ((aout_info.contents == NULL && max_contents_size != 0) | |
3414 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
3415 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
3416 | || aout_info.output_syms == NULL) | |
3417 | { | |
3418 | bfd_set_error (bfd_error_no_memory); | |
3419 | goto error_return; | |
3420 | } | |
4c3721d5 ILT |
3421 | |
3422 | /* The most time efficient way to do the link would be to read all | |
3423 | the input object files into memory and then sort out the | |
3424 | information into the output file. Unfortunately, that will | |
3425 | probably use too much memory. Another method would be to step | |
3426 | through everything that composes the text section and write it | |
3427 | out, and then everything that composes the data section and write | |
3428 | it out, and then write out the relocs, and then write out the | |
3429 | symbols. Unfortunately, that requires reading stuff from each | |
3430 | input file several times, and we will not be able to keep all the | |
3431 | input files open simultaneously, and reopening them will be slow. | |
3432 | ||
3433 | What we do is basically process one input file at a time. We do | |
3434 | everything we need to do with an input file once--copy over the | |
3435 | section contents, handle the relocation information, and write | |
3436 | out the symbols--and then we throw away the information we read | |
3437 | from it. This approach requires a lot of lseeks of the output | |
3438 | file, which is unfortunate but still faster than reopening a lot | |
3439 | of files. | |
3440 | ||
3441 | We use the output_has_begun field of the input BFDs to see | |
3442 | whether we have already handled it. */ | |
3443 | for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next) | |
3444 | sub->output_has_begun = false; | |
3445 | ||
ec099b4b | 3446 | have_link_order_relocs = false; |
4c3721d5 ILT |
3447 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
3448 | { | |
4c3721d5 ILT |
3449 | for (p = o->link_order_head; |
3450 | p != (struct bfd_link_order *) NULL; | |
3451 | p = p->next) | |
3452 | { | |
e68de5d5 ILT |
3453 | if (p->type == bfd_indirect_link_order |
3454 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
3455 | == bfd_target_aout_flavour)) | |
4c3721d5 | 3456 | { |
e68de5d5 ILT |
3457 | bfd *input_bfd; |
3458 | ||
4c3721d5 | 3459 | input_bfd = p->u.indirect.section->owner; |
e68de5d5 | 3460 | if (! input_bfd->output_has_begun) |
4c3721d5 | 3461 | { |
e68de5d5 | 3462 | if (! aout_link_input_bfd (&aout_info, input_bfd)) |
1afd2380 | 3463 | goto error_return; |
e68de5d5 | 3464 | input_bfd->output_has_begun = true; |
4c3721d5 | 3465 | } |
e68de5d5 | 3466 | } |
ec099b4b ILT |
3467 | else if (p->type == bfd_section_reloc_link_order |
3468 | || p->type == bfd_symbol_reloc_link_order) | |
3469 | { | |
3470 | /* These are handled below. */ | |
3471 | have_link_order_relocs = true; | |
3472 | } | |
e68de5d5 ILT |
3473 | else |
3474 | { | |
4c3721d5 | 3475 | if (! _bfd_default_link_order (abfd, info, o, p)) |
1afd2380 | 3476 | goto error_return; |
4c3721d5 ILT |
3477 | } |
3478 | } | |
3479 | } | |
3480 | ||
3481 | /* Write out any symbols that we have not already written out. */ | |
3482 | aout_link_hash_traverse (aout_hash_table (info), | |
3483 | aout_link_write_other_symbol, | |
3484 | (PTR) &aout_info); | |
3485 | ||
ec099b4b ILT |
3486 | /* Now handle any relocs we were asked to create by the linker. |
3487 | These did not come from any input file. We must do these after | |
3488 | we have written out all the symbols, so that we know the symbol | |
3489 | indices to use. */ | |
3490 | if (have_link_order_relocs) | |
3491 | { | |
3492 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
3493 | { | |
3494 | for (p = o->link_order_head; | |
3495 | p != (struct bfd_link_order *) NULL; | |
3496 | p = p->next) | |
3497 | { | |
3498 | if (p->type == bfd_section_reloc_link_order | |
3499 | || p->type == bfd_symbol_reloc_link_order) | |
3500 | { | |
3501 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
1afd2380 | 3502 | goto error_return; |
ec099b4b ILT |
3503 | } |
3504 | } | |
3505 | } | |
3506 | } | |
3507 | ||
1afd2380 ILT |
3508 | if (aout_info.contents != NULL) |
3509 | { | |
3510 | free (aout_info.contents); | |
3511 | aout_info.contents = NULL; | |
3512 | } | |
3513 | if (aout_info.relocs != NULL) | |
3514 | { | |
3515 | free (aout_info.relocs); | |
3516 | aout_info.relocs = NULL; | |
3517 | } | |
3518 | if (aout_info.symbol_map != NULL) | |
3519 | { | |
3520 | free (aout_info.symbol_map); | |
3521 | aout_info.symbol_map = NULL; | |
3522 | } | |
3523 | if (aout_info.output_syms != NULL) | |
3524 | { | |
3525 | free (aout_info.output_syms); | |
3526 | aout_info.output_syms = NULL; | |
3527 | } | |
3528 | ||
e85e8bfe ILT |
3529 | /* Finish up any dynamic linking we may be doing. */ |
3530 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
3531 | { | |
3532 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
1afd2380 | 3533 | goto error_return; |
e85e8bfe ILT |
3534 | } |
3535 | ||
4c3721d5 ILT |
3536 | /* Update the header information. */ |
3537 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
3538 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
3539 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
3540 | obj_textsec (abfd)->reloc_count = | |
3541 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
3542 | obj_datasec (abfd)->reloc_count = | |
3543 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
3544 | ||
3545 | /* Write out the string table. */ | |
3546 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0) | |
1afd2380 ILT |
3547 | goto error_return; |
3548 | return emit_stringtab (abfd, aout_info.strtab); | |
3549 | ||
3550 | error_return: | |
3551 | if (aout_info.contents != NULL) | |
3552 | free (aout_info.contents); | |
3553 | if (aout_info.relocs != NULL) | |
3554 | free (aout_info.relocs); | |
3555 | if (aout_info.symbol_map != NULL) | |
3556 | free (aout_info.symbol_map); | |
3557 | if (aout_info.output_syms != NULL) | |
3558 | free (aout_info.output_syms); | |
3559 | return false; | |
4c3721d5 ILT |
3560 | } |
3561 | ||
3562 | /* Link an a.out input BFD into the output file. */ | |
3563 | ||
3564 | static boolean | |
3565 | aout_link_input_bfd (finfo, input_bfd) | |
3566 | struct aout_final_link_info *finfo; | |
3567 | bfd *input_bfd; | |
3568 | { | |
3569 | bfd_size_type sym_count; | |
4c3721d5 ILT |
3570 | |
3571 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); | |
3572 | ||
e85e8bfe ILT |
3573 | /* If this is a dynamic object, it may need special handling. */ |
3574 | if ((input_bfd->flags & DYNAMIC) != 0 | |
3575 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
3576 | { | |
3577 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
3578 | (finfo->info, input_bfd)); | |
3579 | } | |
3580 | ||
4c3721d5 ILT |
3581 | /* Get the symbols. We probably have them already, unless |
3582 | finfo->info->keep_memory is false. */ | |
5c8444f8 | 3583 | if (! aout_get_external_symbols (input_bfd)) |
4c3721d5 ILT |
3584 | return false; |
3585 | ||
3586 | sym_count = obj_aout_external_sym_count (input_bfd); | |
4c3721d5 | 3587 | |
1afd2380 ILT |
3588 | /* Write out the symbols and get a map of the new indices. The map |
3589 | is placed into finfo->symbol_map. */ | |
3590 | if (! aout_link_write_symbols (finfo, input_bfd)) | |
3591 | return false; | |
4c3721d5 | 3592 | |
1afd2380 ILT |
3593 | /* Relocate and write out the sections. These functions use the |
3594 | symbol map created by aout_link_write_symbols. */ | |
4c3721d5 ILT |
3595 | if (! aout_link_input_section (finfo, input_bfd, |
3596 | obj_textsec (input_bfd), | |
3597 | &finfo->treloff, | |
1afd2380 | 3598 | exec_hdr (input_bfd)->a_trsize) |
4c3721d5 ILT |
3599 | || ! aout_link_input_section (finfo, input_bfd, |
3600 | obj_datasec (input_bfd), | |
3601 | &finfo->dreloff, | |
1afd2380 ILT |
3602 | exec_hdr (input_bfd)->a_drsize)) |
3603 | return false; | |
4c3721d5 ILT |
3604 | |
3605 | /* If we are not keeping memory, we don't need the symbols any | |
3606 | longer. We still need them if we are keeping memory, because the | |
3607 | strings in the hash table point into them. */ | |
3608 | if (! finfo->info->keep_memory) | |
3609 | { | |
3610 | if (! aout_link_free_symbols (input_bfd)) | |
1afd2380 | 3611 | return false; |
4c3721d5 ILT |
3612 | } |
3613 | ||
3614 | return true; | |
3615 | } | |
3616 | ||
3617 | /* Adjust and write out the symbols for an a.out file. Set the new | |
3618 | symbol indices into a symbol_map. */ | |
3619 | ||
3620 | static boolean | |
1afd2380 | 3621 | aout_link_write_symbols (finfo, input_bfd) |
4c3721d5 ILT |
3622 | struct aout_final_link_info *finfo; |
3623 | bfd *input_bfd; | |
4c3721d5 ILT |
3624 | { |
3625 | bfd *output_bfd; | |
3626 | bfd_size_type sym_count; | |
3627 | char *strings; | |
3628 | enum bfd_link_strip strip; | |
3629 | enum bfd_link_discard discard; | |
4c3721d5 | 3630 | struct external_nlist *outsym; |
d17fc4c9 | 3631 | bfd_size_type strtab_index; |
4c3721d5 ILT |
3632 | register struct external_nlist *sym; |
3633 | struct external_nlist *sym_end; | |
3634 | struct aout_link_hash_entry **sym_hash; | |
1afd2380 | 3635 | int *symbol_map; |
4c3721d5 | 3636 | boolean pass; |
ab0434c2 | 3637 | boolean skip_next; |
4c3721d5 ILT |
3638 | |
3639 | output_bfd = finfo->output_bfd; | |
3640 | sym_count = obj_aout_external_sym_count (input_bfd); | |
3641 | strings = obj_aout_external_strings (input_bfd); | |
3642 | strip = finfo->info->strip; | |
3643 | discard = finfo->info->discard; | |
1afd2380 | 3644 | outsym = finfo->output_syms; |
4c3721d5 ILT |
3645 | |
3646 | /* First write out a symbol for this object file, unless we are | |
3647 | discarding such symbols. */ | |
3648 | if (strip != strip_all | |
3649 | && (strip != strip_some | |
3650 | || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename, | |
3651 | false, false) != NULL) | |
3652 | && discard != discard_all) | |
3653 | { | |
3654 | bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type); | |
3655 | bfd_h_put_8 (output_bfd, 0, outsym->e_other); | |
3656 | bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc); | |
1afd2380 | 3657 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, |
d17fc4c9 ILT |
3658 | input_bfd->filename, false); |
3659 | if (strtab_index == (bfd_size_type) -1) | |
1afd2380 | 3660 | return false; |
d17fc4c9 | 3661 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); |
4c3721d5 | 3662 | PUT_WORD (output_bfd, |
2edc8357 ILT |
3663 | (bfd_get_section_vma (output_bfd, |
3664 | obj_textsec (input_bfd)->output_section) | |
3665 | + obj_textsec (input_bfd)->output_offset), | |
4c3721d5 ILT |
3666 | outsym->e_value); |
3667 | ++obj_aout_external_sym_count (output_bfd); | |
3668 | ++outsym; | |
3669 | } | |
3670 | ||
3671 | pass = false; | |
ab0434c2 | 3672 | skip_next = false; |
4c3721d5 ILT |
3673 | sym = obj_aout_external_syms (input_bfd); |
3674 | sym_end = sym + sym_count; | |
3675 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
1afd2380 | 3676 | symbol_map = finfo->symbol_map; |
4c3721d5 ILT |
3677 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) |
3678 | { | |
3679 | const char *name; | |
3680 | int type; | |
d6d6b18a | 3681 | struct aout_link_hash_entry *h; |
4c3721d5 ILT |
3682 | boolean skip; |
3683 | asection *symsec; | |
3684 | bfd_vma val = 0; | |
d17fc4c9 | 3685 | boolean copy; |
4c3721d5 ILT |
3686 | |
3687 | *symbol_map = -1; | |
3688 | ||
3689 | type = bfd_h_get_8 (input_bfd, sym->e_type); | |
3690 | name = strings + GET_WORD (input_bfd, sym->e_strx); | |
3691 | ||
d6d6b18a ILT |
3692 | h = NULL; |
3693 | ||
4c3721d5 ILT |
3694 | if (pass) |
3695 | { | |
53155af1 ILT |
3696 | /* Pass this symbol through. It is the target of an |
3697 | indirect or warning symbol. */ | |
4c3721d5 ILT |
3698 | val = GET_WORD (input_bfd, sym->e_value); |
3699 | pass = false; | |
3700 | } | |
ab0434c2 | 3701 | else if (skip_next) |
53155af1 ILT |
3702 | { |
3703 | /* Skip this symbol, which is the target of an indirect | |
3704 | symbol that we have changed to no longer be an indirect | |
3705 | symbol. */ | |
ab0434c2 | 3706 | skip_next = false; |
53155af1 ILT |
3707 | continue; |
3708 | } | |
4c3721d5 ILT |
3709 | else |
3710 | { | |
53155af1 | 3711 | struct aout_link_hash_entry *hresolve; |
4c3721d5 ILT |
3712 | |
3713 | /* We have saved the hash table entry for this symbol, if | |
3714 | there is one. Note that we could just look it up again | |
3715 | in the hash table, provided we first check that it is an | |
3716 | external symbol. */ | |
3717 | h = *sym_hash; | |
3718 | ||
3a5b50f4 ILT |
3719 | /* If this is an indirect or warning symbol, then change |
3720 | hresolve to the base symbol. We also change *sym_hash so | |
3721 | that the relocation routines relocate against the real | |
3722 | symbol. */ | |
53155af1 ILT |
3723 | hresolve = h; |
3724 | if (h != (struct aout_link_hash_entry *) NULL | |
3a5b50f4 ILT |
3725 | && (h->root.type == bfd_link_hash_indirect |
3726 | || h->root.type == bfd_link_hash_warning)) | |
53155af1 ILT |
3727 | { |
3728 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; | |
118e8d1c ILT |
3729 | while (hresolve->root.type == bfd_link_hash_indirect |
3730 | || hresolve->root.type == bfd_link_hash_warning) | |
53155af1 ILT |
3731 | hresolve = ((struct aout_link_hash_entry *) |
3732 | hresolve->root.u.i.link); | |
3733 | *sym_hash = hresolve; | |
3734 | } | |
3735 | ||
4c3721d5 ILT |
3736 | /* If the symbol has already been written out, skip it. */ |
3737 | if (h != (struct aout_link_hash_entry *) NULL | |
e85e8bfe | 3738 | && h->root.type != bfd_link_hash_warning |
35fee729 | 3739 | && h->written) |
4c3721d5 | 3740 | { |
ab0434c2 ILT |
3741 | if ((type & N_TYPE) == N_INDR |
3742 | || type == N_WARNING) | |
3743 | skip_next = true; | |
4c3721d5 ILT |
3744 | *symbol_map = h->indx; |
3745 | continue; | |
3746 | } | |
3747 | ||
3748 | /* See if we are stripping this symbol. */ | |
3749 | skip = false; | |
3750 | switch (strip) | |
3751 | { | |
3752 | case strip_none: | |
3753 | break; | |
3754 | case strip_debugger: | |
3755 | if ((type & N_STAB) != 0) | |
3756 | skip = true; | |
3757 | break; | |
3758 | case strip_some: | |
3759 | if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false) | |
3760 | == NULL) | |
3761 | skip = true; | |
3762 | break; | |
3763 | case strip_all: | |
3764 | skip = true; | |
3765 | break; | |
3766 | } | |
3767 | if (skip) | |
3768 | { | |
3769 | if (h != (struct aout_link_hash_entry *) NULL) | |
35fee729 | 3770 | h->written = true; |
4c3721d5 ILT |
3771 | continue; |
3772 | } | |
3773 | ||
3774 | /* Get the value of the symbol. */ | |
4298e311 ILT |
3775 | if ((type & N_TYPE) == N_TEXT |
3776 | || type == N_WEAKT) | |
4c3721d5 | 3777 | symsec = obj_textsec (input_bfd); |
4298e311 ILT |
3778 | else if ((type & N_TYPE) == N_DATA |
3779 | || type == N_WEAKD) | |
4c3721d5 | 3780 | symsec = obj_datasec (input_bfd); |
4298e311 ILT |
3781 | else if ((type & N_TYPE) == N_BSS |
3782 | || type == N_WEAKB) | |
4c3721d5 | 3783 | symsec = obj_bsssec (input_bfd); |
4298e311 ILT |
3784 | else if ((type & N_TYPE) == N_ABS |
3785 | || type == N_WEAKA) | |
4587b578 | 3786 | symsec = bfd_abs_section_ptr; |
53155af1 ILT |
3787 | else if (((type & N_TYPE) == N_INDR |
3788 | && (hresolve == (struct aout_link_hash_entry *) NULL | |
3789 | || (hresolve->root.type != bfd_link_hash_defined | |
6c97aedf | 3790 | && hresolve->root.type != bfd_link_hash_defweak |
53155af1 | 3791 | && hresolve->root.type != bfd_link_hash_common))) |
4c3721d5 ILT |
3792 | || type == N_WARNING) |
3793 | { | |
53155af1 ILT |
3794 | /* Pass the next symbol through unchanged. The |
3795 | condition above for indirect symbols is so that if | |
3796 | the indirect symbol was defined, we output it with | |
3797 | the correct definition so the debugger will | |
3798 | understand it. */ | |
4c3721d5 ILT |
3799 | pass = true; |
3800 | val = GET_WORD (input_bfd, sym->e_value); | |
3801 | symsec = NULL; | |
3802 | } | |
3803 | else if ((type & N_STAB) != 0) | |
3804 | { | |
3805 | val = GET_WORD (input_bfd, sym->e_value); | |
3806 | symsec = NULL; | |
3807 | } | |
3808 | else | |
3809 | { | |
53155af1 ILT |
3810 | /* If we get here with an indirect symbol, it means that |
3811 | we are outputting it with a real definition. In such | |
3812 | a case we do not want to output the next symbol, | |
3813 | which is the target of the indirection. */ | |
3814 | if ((type & N_TYPE) == N_INDR) | |
ab0434c2 | 3815 | skip_next = true; |
53155af1 | 3816 | |
f4945271 ILT |
3817 | symsec = NULL; |
3818 | ||
53155af1 ILT |
3819 | /* We need to get the value from the hash table. We use |
3820 | hresolve so that if we have defined an indirect | |
3821 | symbol we output the final definition. */ | |
4c3721d5 | 3822 | if (h == (struct aout_link_hash_entry *) NULL) |
f4945271 ILT |
3823 | { |
3824 | switch (type & N_TYPE) | |
3825 | { | |
3826 | case N_SETT: | |
3827 | symsec = obj_textsec (input_bfd); | |
3828 | break; | |
3829 | case N_SETD: | |
3830 | symsec = obj_datasec (input_bfd); | |
3831 | break; | |
3832 | case N_SETB: | |
3833 | symsec = obj_bsssec (input_bfd); | |
3834 | break; | |
3835 | case N_SETA: | |
3836 | symsec = bfd_abs_section_ptr; | |
3837 | break; | |
3838 | default: | |
3839 | val = 0; | |
3840 | break; | |
3841 | } | |
3842 | } | |
6c97aedf ILT |
3843 | else if (hresolve->root.type == bfd_link_hash_defined |
3844 | || hresolve->root.type == bfd_link_hash_defweak) | |
4c3721d5 | 3845 | { |
53155af1 | 3846 | asection *input_section; |
4c3721d5 ILT |
3847 | asection *output_section; |
3848 | ||
6c97aedf ILT |
3849 | /* This case usually means a common symbol which was |
3850 | turned into a defined symbol. */ | |
53155af1 ILT |
3851 | input_section = hresolve->root.u.def.section; |
3852 | output_section = input_section->output_section; | |
4587b578 | 3853 | BFD_ASSERT (bfd_is_abs_section (output_section) |
4c3721d5 | 3854 | || output_section->owner == output_bfd); |
53155af1 | 3855 | val = (hresolve->root.u.def.value |
4c3721d5 | 3856 | + bfd_get_section_vma (output_bfd, output_section) |
53155af1 | 3857 | + input_section->output_offset); |
4c3721d5 ILT |
3858 | |
3859 | /* Get the correct type based on the section. If | |
3860 | this is a constructed set, force it to be | |
3861 | globally visible. */ | |
3862 | if (type == N_SETT | |
3863 | || type == N_SETD | |
3864 | || type == N_SETB | |
3865 | || type == N_SETA) | |
3866 | type |= N_EXT; | |
3867 | ||
3868 | type &=~ N_TYPE; | |
3869 | ||
3870 | if (output_section == obj_textsec (output_bfd)) | |
6c97aedf ILT |
3871 | type |= (hresolve->root.type == bfd_link_hash_defined |
3872 | ? N_TEXT | |
3873 | : N_WEAKT); | |
4c3721d5 | 3874 | else if (output_section == obj_datasec (output_bfd)) |
6c97aedf ILT |
3875 | type |= (hresolve->root.type == bfd_link_hash_defined |
3876 | ? N_DATA | |
3877 | : N_WEAKD); | |
4c3721d5 | 3878 | else if (output_section == obj_bsssec (output_bfd)) |
6c97aedf ILT |
3879 | type |= (hresolve->root.type == bfd_link_hash_defined |
3880 | ? N_BSS | |
3881 | : N_WEAKB); | |
4c3721d5 | 3882 | else |
6c97aedf ILT |
3883 | type |= (hresolve->root.type == bfd_link_hash_defined |
3884 | ? N_ABS | |
3885 | : N_WEAKA); | |
4c3721d5 | 3886 | } |
53155af1 ILT |
3887 | else if (hresolve->root.type == bfd_link_hash_common) |
3888 | val = hresolve->root.u.c.size; | |
6c97aedf | 3889 | else if (hresolve->root.type == bfd_link_hash_undefweak) |
4298e311 ILT |
3890 | { |
3891 | val = 0; | |
3892 | type = N_WEAKU; | |
3893 | } | |
4c3721d5 ILT |
3894 | else |
3895 | val = 0; | |
4c3721d5 ILT |
3896 | } |
3897 | if (symsec != (asection *) NULL) | |
3898 | val = (symsec->output_section->vma | |
3899 | + symsec->output_offset | |
3900 | + (GET_WORD (input_bfd, sym->e_value) | |
3901 | - symsec->vma)); | |
3902 | ||
3903 | /* If this is a global symbol set the written flag, and if | |
3904 | it is a local symbol see if we should discard it. */ | |
3905 | if (h != (struct aout_link_hash_entry *) NULL) | |
3906 | { | |
35fee729 | 3907 | h->written = true; |
4c3721d5 ILT |
3908 | h->indx = obj_aout_external_sym_count (output_bfd); |
3909 | } | |
f4945271 ILT |
3910 | else if ((type & N_TYPE) != N_SETT |
3911 | && (type & N_TYPE) != N_SETD | |
3912 | && (type & N_TYPE) != N_SETB | |
3913 | && (type & N_TYPE) != N_SETA) | |
4c3721d5 ILT |
3914 | { |
3915 | switch (discard) | |
3916 | { | |
3917 | case discard_none: | |
3918 | break; | |
3919 | case discard_l: | |
3920 | if (*name == *finfo->info->lprefix | |
3921 | && (finfo->info->lprefix_len == 1 | |
3922 | || strncmp (name, finfo->info->lprefix, | |
3923 | finfo->info->lprefix_len) == 0)) | |
3924 | skip = true; | |
3925 | break; | |
3926 | case discard_all: | |
3927 | skip = true; | |
3928 | break; | |
3929 | } | |
3930 | if (skip) | |
3931 | { | |
3932 | pass = false; | |
3933 | continue; | |
3934 | } | |
3935 | } | |
3936 | } | |
3937 | ||
3938 | /* Copy this symbol into the list of symbols we are going to | |
3939 | write out. */ | |
3940 | bfd_h_put_8 (output_bfd, type, outsym->e_type); | |
3941 | bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other), | |
3942 | outsym->e_other); | |
3943 | bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc), | |
3944 | outsym->e_desc); | |
d17fc4c9 | 3945 | copy = false; |
d6d6b18a ILT |
3946 | if (! finfo->info->keep_memory) |
3947 | { | |
3948 | /* name points into a string table which we are going to | |
3949 | free. If there is a hash table entry, use that string. | |
3950 | Otherwise, copy name into memory. */ | |
3951 | if (h != (struct aout_link_hash_entry *) NULL) | |
1afd2380 | 3952 | name = h->root.root.string; |
d6d6b18a | 3953 | else |
d17fc4c9 | 3954 | copy = true; |
d6d6b18a | 3955 | } |
1afd2380 | 3956 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, |
d17fc4c9 ILT |
3957 | name, copy); |
3958 | if (strtab_index == (bfd_size_type) -1) | |
1afd2380 | 3959 | return false; |
d17fc4c9 | 3960 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); |
4c3721d5 ILT |
3961 | PUT_WORD (output_bfd, val, outsym->e_value); |
3962 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
3963 | ++obj_aout_external_sym_count (output_bfd); | |
3964 | ++outsym; | |
3965 | } | |
3966 | ||
3967 | /* Write out the output symbols we have just constructed. */ | |
1afd2380 | 3968 | if (outsym > finfo->output_syms) |
4c3721d5 ILT |
3969 | { |
3970 | bfd_size_type outsym_count; | |
3971 | ||
3972 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0) | |
1afd2380 ILT |
3973 | return false; |
3974 | outsym_count = outsym - finfo->output_syms; | |
3975 | if (bfd_write ((PTR) finfo->output_syms, | |
3976 | (bfd_size_type) EXTERNAL_NLIST_SIZE, | |
4c3721d5 ILT |
3977 | (bfd_size_type) outsym_count, output_bfd) |
3978 | != outsym_count * EXTERNAL_NLIST_SIZE) | |
1afd2380 | 3979 | return false; |
4c3721d5 ILT |
3980 | finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE; |
3981 | } | |
3982 | ||
3983 | return true; | |
3984 | } | |
3985 | ||
3986 | /* Write out a symbol that was not associated with an a.out input | |
3987 | object. */ | |
3988 | ||
3989 | static boolean | |
3990 | aout_link_write_other_symbol (h, data) | |
3991 | struct aout_link_hash_entry *h; | |
3992 | PTR data; | |
3993 | { | |
3994 | struct aout_final_link_info *finfo = (struct aout_final_link_info *) data; | |
3995 | bfd *output_bfd; | |
3996 | int type; | |
3997 | bfd_vma val; | |
3998 | struct external_nlist outsym; | |
d17fc4c9 | 3999 | bfd_size_type indx; |
4c3721d5 | 4000 | |
e85e8bfe ILT |
4001 | output_bfd = finfo->output_bfd; |
4002 | ||
4003 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) | |
4004 | { | |
4005 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) | |
4006 | (output_bfd, finfo->info, h))) | |
4007 | { | |
4008 | /* FIXME: No way to handle errors. */ | |
4009 | abort (); | |
4010 | } | |
4011 | } | |
4012 | ||
35fee729 | 4013 | if (h->written) |
4c3721d5 ILT |
4014 | return true; |
4015 | ||
35fee729 | 4016 | h->written = true; |
9783e04a | 4017 | |
74942465 ILT |
4018 | /* An indx of -2 means the symbol must be written. */ |
4019 | if (h->indx != -2 | |
4020 | && (finfo->info->strip == strip_all | |
4021 | || (finfo->info->strip == strip_some | |
4022 | && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string, | |
4023 | false, false) == NULL))) | |
9783e04a DM |
4024 | return true; |
4025 | ||
4c3721d5 ILT |
4026 | switch (h->root.type) |
4027 | { | |
4028 | default: | |
4c3721d5 ILT |
4029 | abort (); |
4030 | /* Avoid variable not initialized warnings. */ | |
4031 | return true; | |
f4945271 ILT |
4032 | case bfd_link_hash_new: |
4033 | /* This can happen for set symbols when sets are not being | |
4034 | built. */ | |
4035 | return true; | |
4c3721d5 ILT |
4036 | case bfd_link_hash_undefined: |
4037 | type = N_UNDF | N_EXT; | |
4038 | val = 0; | |
4039 | break; | |
4040 | case bfd_link_hash_defined: | |
6c97aedf | 4041 | case bfd_link_hash_defweak: |
4c3721d5 ILT |
4042 | { |
4043 | asection *sec; | |
4044 | ||
4f019d04 | 4045 | sec = h->root.u.def.section->output_section; |
4587b578 | 4046 | BFD_ASSERT (bfd_is_abs_section (sec) |
4c3721d5 ILT |
4047 | || sec->owner == output_bfd); |
4048 | if (sec == obj_textsec (output_bfd)) | |
6c97aedf | 4049 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; |
4c3721d5 | 4050 | else if (sec == obj_datasec (output_bfd)) |
6c97aedf | 4051 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; |
4c3721d5 | 4052 | else if (sec == obj_bsssec (output_bfd)) |
6c97aedf | 4053 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; |
4c3721d5 | 4054 | else |
6c97aedf ILT |
4055 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; |
4056 | type |= N_EXT; | |
4c3721d5 | 4057 | val = (h->root.u.def.value |
4f019d04 ILT |
4058 | + sec->vma |
4059 | + h->root.u.def.section->output_offset); | |
4c3721d5 ILT |
4060 | } |
4061 | break; | |
4062 | case bfd_link_hash_common: | |
4063 | type = N_UNDF | N_EXT; | |
4064 | val = h->root.u.c.size; | |
4065 | break; | |
6c97aedf | 4066 | case bfd_link_hash_undefweak: |
4298e311 ILT |
4067 | type = N_WEAKU; |
4068 | val = 0; | |
4c3721d5 ILT |
4069 | case bfd_link_hash_indirect: |
4070 | case bfd_link_hash_warning: | |
4071 | /* FIXME: Ignore these for now. The circumstances under which | |
4072 | they should be written out are not clear to me. */ | |
4073 | return true; | |
4074 | } | |
4075 | ||
4076 | bfd_h_put_8 (output_bfd, type, outsym.e_type); | |
4077 | bfd_h_put_8 (output_bfd, 0, outsym.e_other); | |
4078 | bfd_h_put_16 (output_bfd, 0, outsym.e_desc); | |
1afd2380 | 4079 | indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string, |
d17fc4c9 ILT |
4080 | false); |
4081 | if (indx == (bfd_size_type) -1) | |
4082 | { | |
4083 | /* FIXME: No way to handle errors. */ | |
4084 | abort (); | |
4085 | } | |
4086 | PUT_WORD (output_bfd, indx, outsym.e_strx); | |
4c3721d5 ILT |
4087 | PUT_WORD (output_bfd, val, outsym.e_value); |
4088 | ||
4089 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0 | |
4090 | || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE, | |
4091 | (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE) | |
4092 | { | |
4093 | /* FIXME: No way to handle errors. */ | |
4094 | abort (); | |
4095 | } | |
4096 | ||
4097 | finfo->symoff += EXTERNAL_NLIST_SIZE; | |
4098 | h->indx = obj_aout_external_sym_count (output_bfd); | |
4099 | ++obj_aout_external_sym_count (output_bfd); | |
4100 | ||
4101 | return true; | |
4102 | } | |
4103 | ||
4104 | /* Link an a.out section into the output file. */ | |
4105 | ||
4106 | static boolean | |
4107 | aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr, | |
1afd2380 | 4108 | rel_size) |
4c3721d5 ILT |
4109 | struct aout_final_link_info *finfo; |
4110 | bfd *input_bfd; | |
4111 | asection *input_section; | |
4112 | file_ptr *reloff_ptr; | |
4113 | bfd_size_type rel_size; | |
4c3721d5 ILT |
4114 | { |
4115 | bfd_size_type input_size; | |
e85e8bfe | 4116 | PTR relocs; |
4c3721d5 ILT |
4117 | |
4118 | /* Get the section contents. */ | |
4119 | input_size = bfd_section_size (input_bfd, input_section); | |
1afd2380 ILT |
4120 | if (! bfd_get_section_contents (input_bfd, input_section, |
4121 | (PTR) finfo->contents, | |
4c3721d5 | 4122 | (file_ptr) 0, input_size)) |
1afd2380 | 4123 | return false; |
4c3721d5 | 4124 | |
e85e8bfe ILT |
4125 | /* Read in the relocs if we haven't already done it. */ |
4126 | if (aout_section_data (input_section) != NULL | |
4127 | && aout_section_data (input_section)->relocs != NULL) | |
4128 | relocs = aout_section_data (input_section)->relocs; | |
4129 | else | |
80425e6c | 4130 | { |
1afd2380 | 4131 | relocs = finfo->relocs; |
875e4716 ILT |
4132 | if (rel_size > 0) |
4133 | { | |
4134 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
4135 | || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size) | |
4136 | return false; | |
4137 | } | |
80425e6c | 4138 | } |
4c3721d5 ILT |
4139 | |
4140 | /* Relocate the section contents. */ | |
4141 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) | |
4142 | { | |
4143 | if (! aout_link_input_section_std (finfo, input_bfd, input_section, | |
4144 | (struct reloc_std_external *) relocs, | |
1afd2380 ILT |
4145 | rel_size, finfo->contents)) |
4146 | return false; | |
4c3721d5 ILT |
4147 | } |
4148 | else | |
4149 | { | |
4150 | if (! aout_link_input_section_ext (finfo, input_bfd, input_section, | |
4151 | (struct reloc_ext_external *) relocs, | |
1afd2380 ILT |
4152 | rel_size, finfo->contents)) |
4153 | return false; | |
4c3721d5 ILT |
4154 | } |
4155 | ||
4156 | /* Write out the section contents. */ | |
4157 | if (! bfd_set_section_contents (finfo->output_bfd, | |
4158 | input_section->output_section, | |
1afd2380 | 4159 | (PTR) finfo->contents, |
728472f1 | 4160 | input_section->output_offset, |
4c3721d5 | 4161 | input_size)) |
1afd2380 | 4162 | return false; |
4c3721d5 ILT |
4163 | |
4164 | /* If we are producing relocateable output, the relocs were | |
4165 | modified, and we now write them out. */ | |
875e4716 | 4166 | if (finfo->info->relocateable && rel_size > 0) |
4c3721d5 ILT |
4167 | { |
4168 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) | |
1afd2380 | 4169 | return false; |
4c3721d5 ILT |
4170 | if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd) |
4171 | != rel_size) | |
1afd2380 | 4172 | return false; |
4c3721d5 ILT |
4173 | *reloff_ptr += rel_size; |
4174 | ||
4175 | /* Assert that the relocs have not run into the symbols, and | |
4176 | that if these are the text relocs they have not run into the | |
4177 | data relocs. */ | |
4178 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
4179 | && (reloff_ptr != &finfo->treloff | |
4180 | || (*reloff_ptr | |
4181 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
4182 | } | |
4183 | ||
4184 | return true; | |
4185 | } | |
4186 | ||
4187 | /* Get the section corresponding to a reloc index. */ | |
4188 | ||
4189 | static INLINE asection * | |
4190 | aout_reloc_index_to_section (abfd, indx) | |
4191 | bfd *abfd; | |
4192 | int indx; | |
4193 | { | |
4194 | switch (indx & N_TYPE) | |
4195 | { | |
4196 | case N_TEXT: | |
4197 | return obj_textsec (abfd); | |
4198 | case N_DATA: | |
4199 | return obj_datasec (abfd); | |
4200 | case N_BSS: | |
4201 | return obj_bsssec (abfd); | |
4202 | case N_ABS: | |
fa2302b8 | 4203 | case N_UNDF: |
4587b578 | 4204 | return bfd_abs_section_ptr; |
4c3721d5 ILT |
4205 | default: |
4206 | abort (); | |
4207 | } | |
4208 | } | |
4209 | ||
4210 | /* Relocate an a.out section using standard a.out relocs. */ | |
4211 | ||
4212 | static boolean | |
4213 | aout_link_input_section_std (finfo, input_bfd, input_section, relocs, | |
1afd2380 | 4214 | rel_size, contents) |
4c3721d5 ILT |
4215 | struct aout_final_link_info *finfo; |
4216 | bfd *input_bfd; | |
4217 | asection *input_section; | |
4218 | struct reloc_std_external *relocs; | |
4219 | bfd_size_type rel_size; | |
4220 | bfd_byte *contents; | |
4c3721d5 | 4221 | { |
e85e8bfe ILT |
4222 | boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *, |
4223 | bfd *, asection *, | |
4224 | struct aout_link_hash_entry *, | |
4225 | PTR, boolean *)); | |
4c3721d5 ILT |
4226 | bfd *output_bfd; |
4227 | boolean relocateable; | |
4228 | struct external_nlist *syms; | |
4229 | char *strings; | |
4230 | struct aout_link_hash_entry **sym_hashes; | |
1afd2380 | 4231 | int *symbol_map; |
4c3721d5 ILT |
4232 | bfd_size_type reloc_count; |
4233 | register struct reloc_std_external *rel; | |
4234 | struct reloc_std_external *rel_end; | |
4235 | ||
4236 | output_bfd = finfo->output_bfd; | |
e85e8bfe | 4237 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
4c3721d5 ILT |
4238 | |
4239 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE); | |
4240 | BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p | |
4241 | == output_bfd->xvec->header_byteorder_big_p); | |
4242 | ||
4243 | relocateable = finfo->info->relocateable; | |
4244 | syms = obj_aout_external_syms (input_bfd); | |
4245 | strings = obj_aout_external_strings (input_bfd); | |
4246 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
1afd2380 | 4247 | symbol_map = finfo->symbol_map; |
4c3721d5 ILT |
4248 | |
4249 | reloc_count = rel_size / RELOC_STD_SIZE; | |
4250 | rel = relocs; | |
4251 | rel_end = rel + reloc_count; | |
4252 | for (; rel < rel_end; rel++) | |
4253 | { | |
4254 | bfd_vma r_addr; | |
4255 | int r_index; | |
4256 | int r_extern; | |
4257 | int r_pcrel; | |
4258 | int r_baserel; | |
4259 | int r_jmptable; | |
4260 | int r_relative; | |
4261 | int r_length; | |
4262 | int howto_idx; | |
f42fe159 | 4263 | reloc_howto_type *howto; |
4c3721d5 ILT |
4264 | bfd_vma relocation; |
4265 | bfd_reloc_status_type r; | |
4266 | ||
4267 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
4268 | ||
f42fe159 ILT |
4269 | #ifdef MY_reloc_howto |
4270 | howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel); | |
4271 | #else | |
4c3721d5 ILT |
4272 | if (input_bfd->xvec->header_byteorder_big_p) |
4273 | { | |
4274 | r_index = ((rel->r_index[0] << 16) | |
4275 | | (rel->r_index[1] << 8) | |
4276 | | rel->r_index[2]); | |
4277 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
4278 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
4279 | r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
4280 | r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
4281 | r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
4282 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
4283 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
4284 | } | |
4285 | else | |
4286 | { | |
4287 | r_index = ((rel->r_index[2] << 16) | |
4288 | | (rel->r_index[1] << 8) | |
4289 | | rel->r_index[0]); | |
4290 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
4291 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
4292 | r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
4293 | r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
4294 | r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
4295 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
4296 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
4297 | } | |
4298 | ||
cb9461ff JK |
4299 | howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel |
4300 | + 16 * r_jmptable + 32 * r_relative; | |
4c3721d5 | 4301 | BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std)); |
f42fe159 ILT |
4302 | howto = howto_table_std + howto_idx; |
4303 | #endif | |
4c3721d5 ILT |
4304 | |
4305 | if (relocateable) | |
4306 | { | |
4307 | /* We are generating a relocateable output file, and must | |
4308 | modify the reloc accordingly. */ | |
4309 | if (r_extern) | |
4310 | { | |
4311 | struct aout_link_hash_entry *h; | |
4312 | ||
4313 | /* If we know the symbol this relocation is against, | |
4314 | convert it into a relocation against a section. This | |
4315 | is what the native linker does. */ | |
4316 | h = sym_hashes[r_index]; | |
4317 | if (h != (struct aout_link_hash_entry *) NULL | |
6c97aedf ILT |
4318 | && (h->root.type == bfd_link_hash_defined |
4319 | || h->root.type == bfd_link_hash_defweak)) | |
4c3721d5 ILT |
4320 | { |
4321 | asection *output_section; | |
4322 | ||
4323 | /* Change the r_extern value. */ | |
4324 | if (output_bfd->xvec->header_byteorder_big_p) | |
4325 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG; | |
4326 | else | |
4327 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE; | |
4328 | ||
4329 | /* Compute a new r_index. */ | |
4330 | output_section = h->root.u.def.section->output_section; | |
4331 | if (output_section == obj_textsec (output_bfd)) | |
4332 | r_index = N_TEXT; | |
4333 | else if (output_section == obj_datasec (output_bfd)) | |
4334 | r_index = N_DATA; | |
4335 | else if (output_section == obj_bsssec (output_bfd)) | |
4336 | r_index = N_BSS; | |
4337 | else | |
4338 | r_index = N_ABS; | |
4339 | ||
4340 | /* Add the symbol value and the section VMA to the | |
4341 | addend stored in the contents. */ | |
4342 | relocation = (h->root.u.def.value | |
4343 | + output_section->vma | |
4344 | + h->root.u.def.section->output_offset); | |
4345 | } | |
4346 | else | |
4347 | { | |
4348 | /* We must change r_index according to the symbol | |
4349 | map. */ | |
4350 | r_index = symbol_map[r_index]; | |
4351 | ||
4352 | if (r_index == -1) | |
4353 | { | |
74942465 ILT |
4354 | if (h != NULL) |
4355 | { | |
4356 | /* We decided to strip this symbol, but it | |
4357 | turns out that we can't. Note that we | |
4358 | lose the other and desc information here. | |
4359 | I don't think that will ever matter for a | |
4360 | global symbol. */ | |
4361 | if (h->indx < 0) | |
4362 | { | |
4363 | h->indx = -2; | |
4364 | h->written = false; | |
4365 | if (! aout_link_write_other_symbol (h, | |
4366 | (PTR) finfo)) | |
4367 | return false; | |
4368 | } | |
4369 | r_index = h->indx; | |
4370 | } | |
4371 | else | |
4372 | { | |
4373 | const char *name; | |
4374 | ||
4375 | name = strings + GET_WORD (input_bfd, | |
4376 | syms[r_index].e_strx); | |
4377 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
4378 | (finfo->info, name, input_bfd, input_section, | |
4379 | r_addr))) | |
4380 | return false; | |
4381 | r_index = 0; | |
4382 | } | |
4c3721d5 ILT |
4383 | } |
4384 | ||
4385 | relocation = 0; | |
4386 | } | |
4387 | ||
4388 | /* Write out the new r_index value. */ | |
4389 | if (output_bfd->xvec->header_byteorder_big_p) | |
4390 | { | |
4391 | rel->r_index[0] = r_index >> 16; | |
4392 | rel->r_index[1] = r_index >> 8; | |
4393 | rel->r_index[2] = r_index; | |
4394 | } | |
4395 | else | |
4396 | { | |
4397 | rel->r_index[2] = r_index >> 16; | |
4398 | rel->r_index[1] = r_index >> 8; | |
4399 | rel->r_index[0] = r_index; | |
4400 | } | |
4401 | } | |
4402 | else | |
4403 | { | |
4404 | asection *section; | |
4405 | ||
4406 | /* This is a relocation against a section. We must | |
4407 | adjust by the amount that the section moved. */ | |
4408 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4409 | relocation = (section->output_section->vma | |
4410 | + section->output_offset | |
4411 | - section->vma); | |
4412 | } | |
4413 | ||
4414 | /* Change the address of the relocation. */ | |
4415 | PUT_WORD (output_bfd, | |
4416 | r_addr + input_section->output_offset, | |
4417 | rel->r_address); | |
4418 | ||
4419 | /* Adjust a PC relative relocation by removing the reference | |
e68de5d5 ILT |
4420 | to the original address in the section and including the |
4421 | reference to the new address. */ | |
4c3721d5 | 4422 | if (r_pcrel) |
e68de5d5 ILT |
4423 | relocation -= (input_section->output_section->vma |
4424 | + input_section->output_offset | |
4425 | - input_section->vma); | |
4c3721d5 ILT |
4426 | |
4427 | if (relocation == 0) | |
4428 | r = bfd_reloc_ok; | |
4429 | else | |
f42fe159 | 4430 | r = _bfd_relocate_contents (howto, |
4c3721d5 ILT |
4431 | input_bfd, relocation, |
4432 | contents + r_addr); | |
4433 | } | |
4434 | else | |
4435 | { | |
4436 | /* We are generating an executable, and must do a full | |
4437 | relocation. */ | |
4438 | if (r_extern) | |
4439 | { | |
4440 | struct aout_link_hash_entry *h; | |
4441 | ||
4442 | h = sym_hashes[r_index]; | |
e85e8bfe ILT |
4443 | |
4444 | if (check_dynamic_reloc != NULL) | |
4445 | { | |
4446 | boolean skip; | |
4447 | ||
4448 | if (! ((*check_dynamic_reloc) | |
4449 | (finfo->info, input_bfd, input_section, h, | |
4450 | (PTR) rel, &skip))) | |
4451 | return false; | |
4452 | if (skip) | |
4453 | continue; | |
4454 | } | |
4455 | ||
4c3721d5 | 4456 | if (h != (struct aout_link_hash_entry *) NULL |
6c97aedf ILT |
4457 | && (h->root.type == bfd_link_hash_defined |
4458 | || h->root.type == bfd_link_hash_defweak)) | |
4c3721d5 ILT |
4459 | { |
4460 | relocation = (h->root.u.def.value | |
4461 | + h->root.u.def.section->output_section->vma | |
4462 | + h->root.u.def.section->output_offset); | |
4463 | } | |
4298e311 | 4464 | else if (h != (struct aout_link_hash_entry *) NULL |
6c97aedf | 4465 | && h->root.type == bfd_link_hash_undefweak) |
4298e311 | 4466 | relocation = 0; |
4c3721d5 ILT |
4467 | else |
4468 | { | |
4469 | const char *name; | |
4470 | ||
4471 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
4472 | if (! ((*finfo->info->callbacks->undefined_symbol) | |
4473 | (finfo->info, name, input_bfd, input_section, | |
4474 | r_addr))) | |
4475 | return false; | |
4476 | relocation = 0; | |
4477 | } | |
4478 | } | |
4479 | else | |
4480 | { | |
4481 | asection *section; | |
4482 | ||
4483 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4484 | relocation = (section->output_section->vma | |
4485 | + section->output_offset | |
4486 | - section->vma); | |
e68de5d5 ILT |
4487 | if (r_pcrel) |
4488 | relocation += input_section->vma; | |
4c3721d5 ILT |
4489 | } |
4490 | ||
f42fe159 | 4491 | r = _bfd_final_link_relocate (howto, |
4c3721d5 ILT |
4492 | input_bfd, input_section, |
4493 | contents, r_addr, relocation, | |
4494 | (bfd_vma) 0); | |
4495 | } | |
4496 | ||
4497 | if (r != bfd_reloc_ok) | |
4498 | { | |
4499 | switch (r) | |
4500 | { | |
4501 | default: | |
4502 | case bfd_reloc_outofrange: | |
4503 | abort (); | |
4504 | case bfd_reloc_overflow: | |
4991ebb9 ILT |
4505 | { |
4506 | const char *name; | |
4507 | ||
4508 | if (r_extern) | |
4509 | name = strings + GET_WORD (input_bfd, | |
4510 | syms[r_index].e_strx); | |
4511 | else | |
4512 | { | |
4513 | asection *s; | |
4514 | ||
4515 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
4516 | name = bfd_section_name (input_bfd, s); | |
4517 | } | |
4518 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
f42fe159 | 4519 | (finfo->info, name, howto->name, |
4991ebb9 ILT |
4520 | (bfd_vma) 0, input_bfd, input_section, r_addr))) |
4521 | return false; | |
4522 | } | |
4c3721d5 ILT |
4523 | break; |
4524 | } | |
4525 | } | |
4526 | } | |
4527 | ||
4528 | return true; | |
4529 | } | |
4530 | ||
4531 | /* Relocate an a.out section using extended a.out relocs. */ | |
4532 | ||
4533 | static boolean | |
4534 | aout_link_input_section_ext (finfo, input_bfd, input_section, relocs, | |
1afd2380 | 4535 | rel_size, contents) |
4c3721d5 ILT |
4536 | struct aout_final_link_info *finfo; |
4537 | bfd *input_bfd; | |
4538 | asection *input_section; | |
4539 | struct reloc_ext_external *relocs; | |
4540 | bfd_size_type rel_size; | |
4541 | bfd_byte *contents; | |
4c3721d5 | 4542 | { |
e85e8bfe ILT |
4543 | boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *, |
4544 | bfd *, asection *, | |
4545 | struct aout_link_hash_entry *, | |
4546 | PTR, boolean *)); | |
4c3721d5 ILT |
4547 | bfd *output_bfd; |
4548 | boolean relocateable; | |
4549 | struct external_nlist *syms; | |
4550 | char *strings; | |
4551 | struct aout_link_hash_entry **sym_hashes; | |
1afd2380 | 4552 | int *symbol_map; |
4c3721d5 ILT |
4553 | bfd_size_type reloc_count; |
4554 | register struct reloc_ext_external *rel; | |
4555 | struct reloc_ext_external *rel_end; | |
4556 | ||
4557 | output_bfd = finfo->output_bfd; | |
e85e8bfe | 4558 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
4c3721d5 ILT |
4559 | |
4560 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE); | |
4561 | BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p | |
4562 | == output_bfd->xvec->header_byteorder_big_p); | |
4563 | ||
4564 | relocateable = finfo->info->relocateable; | |
4565 | syms = obj_aout_external_syms (input_bfd); | |
4566 | strings = obj_aout_external_strings (input_bfd); | |
4567 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
1afd2380 | 4568 | symbol_map = finfo->symbol_map; |
4c3721d5 ILT |
4569 | |
4570 | reloc_count = rel_size / RELOC_EXT_SIZE; | |
4571 | rel = relocs; | |
4572 | rel_end = rel + reloc_count; | |
4573 | for (; rel < rel_end; rel++) | |
4574 | { | |
4575 | bfd_vma r_addr; | |
4576 | int r_index; | |
4577 | int r_extern; | |
4578 | int r_type; | |
4579 | bfd_vma r_addend; | |
4580 | bfd_vma relocation; | |
4581 | ||
4582 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
4583 | ||
4584 | if (input_bfd->xvec->header_byteorder_big_p) | |
4585 | { | |
4586 | r_index = ((rel->r_index[0] << 16) | |
4587 | | (rel->r_index[1] << 8) | |
4588 | | rel->r_index[2]); | |
4589 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
4590 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
4591 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
4592 | } | |
4593 | else | |
4594 | { | |
4595 | r_index = ((rel->r_index[2] << 16) | |
4596 | | (rel->r_index[1] << 8) | |
4597 | | rel->r_index[0]); | |
4598 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
4599 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
4600 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
4601 | } | |
4602 | ||
4603 | r_addend = GET_SWORD (input_bfd, rel->r_addend); | |
4604 | ||
e68de5d5 ILT |
4605 | BFD_ASSERT (r_type >= 0 |
4606 | && r_type < TABLE_SIZE (howto_table_ext)); | |
4607 | ||
4c3721d5 ILT |
4608 | if (relocateable) |
4609 | { | |
4610 | /* We are generating a relocateable output file, and must | |
4611 | modify the reloc accordingly. */ | |
4612 | if (r_extern) | |
4613 | { | |
4614 | struct aout_link_hash_entry *h; | |
4615 | ||
4616 | /* If we know the symbol this relocation is against, | |
4617 | convert it into a relocation against a section. This | |
4618 | is what the native linker does. */ | |
4619 | h = sym_hashes[r_index]; | |
4620 | if (h != (struct aout_link_hash_entry *) NULL | |
6c97aedf ILT |
4621 | && (h->root.type == bfd_link_hash_defined |
4622 | || h->root.type == bfd_link_hash_defweak)) | |
4c3721d5 ILT |
4623 | { |
4624 | asection *output_section; | |
4625 | ||
4626 | /* Change the r_extern value. */ | |
4627 | if (output_bfd->xvec->header_byteorder_big_p) | |
4628 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG; | |
4629 | else | |
4630 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE; | |
4631 | ||
4632 | /* Compute a new r_index. */ | |
4633 | output_section = h->root.u.def.section->output_section; | |
4634 | if (output_section == obj_textsec (output_bfd)) | |
4635 | r_index = N_TEXT; | |
4636 | else if (output_section == obj_datasec (output_bfd)) | |
4637 | r_index = N_DATA; | |
4638 | else if (output_section == obj_bsssec (output_bfd)) | |
4639 | r_index = N_BSS; | |
4640 | else | |
4641 | r_index = N_ABS; | |
4642 | ||
4643 | /* Add the symbol value and the section VMA to the | |
4644 | addend. */ | |
4645 | relocation = (h->root.u.def.value | |
4646 | + output_section->vma | |
4647 | + h->root.u.def.section->output_offset); | |
e68de5d5 ILT |
4648 | |
4649 | /* Now RELOCATION is the VMA of the final | |
4650 | destination. If this is a PC relative reloc, | |
4651 | then ADDEND is the negative of the source VMA. | |
4652 | We want to set ADDEND to the difference between | |
4653 | the destination VMA and the source VMA, which | |
4654 | means we must adjust RELOCATION by the change in | |
4655 | the source VMA. This is done below. */ | |
4c3721d5 ILT |
4656 | } |
4657 | else | |
4658 | { | |
4659 | /* We must change r_index according to the symbol | |
4660 | map. */ | |
4661 | r_index = symbol_map[r_index]; | |
4662 | ||
4663 | if (r_index == -1) | |
4664 | { | |
74942465 ILT |
4665 | if (h != NULL) |
4666 | { | |
4667 | /* We decided to strip this symbol, but it | |
4668 | turns out that we can't. Note that we | |
4669 | lose the other and desc information here. | |
4670 | I don't think that will ever matter for a | |
4671 | global symbol. */ | |
4672 | if (h->indx < 0) | |
4673 | { | |
4674 | h->indx = -2; | |
4675 | h->written = false; | |
4676 | if (! aout_link_write_other_symbol (h, | |
4677 | (PTR) finfo)) | |
4678 | return false; | |
4679 | } | |
4680 | r_index = h->indx; | |
4681 | } | |
4682 | else | |
4683 | { | |
4684 | const char *name; | |
4685 | ||
4686 | name = strings + GET_WORD (input_bfd, | |
4687 | syms[r_index].e_strx); | |
4688 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
4689 | (finfo->info, name, input_bfd, input_section, | |
4690 | r_addr))) | |
4691 | return false; | |
4692 | r_index = 0; | |
4693 | } | |
4c3721d5 ILT |
4694 | } |
4695 | ||
4696 | relocation = 0; | |
e68de5d5 ILT |
4697 | |
4698 | /* If this is a PC relative reloc, then the addend | |
4699 | is the negative of the source VMA. We must | |
4700 | adjust it by the change in the source VMA. This | |
4701 | is done below. */ | |
4c3721d5 ILT |
4702 | } |
4703 | ||
4704 | /* Write out the new r_index value. */ | |
4705 | if (output_bfd->xvec->header_byteorder_big_p) | |
4706 | { | |
4707 | rel->r_index[0] = r_index >> 16; | |
4708 | rel->r_index[1] = r_index >> 8; | |
4709 | rel->r_index[2] = r_index; | |
4710 | } | |
4711 | else | |
4712 | { | |
4713 | rel->r_index[2] = r_index >> 16; | |
4714 | rel->r_index[1] = r_index >> 8; | |
4715 | rel->r_index[0] = r_index; | |
4716 | } | |
4717 | } | |
4718 | else | |
4719 | { | |
4720 | asection *section; | |
4721 | ||
4722 | /* This is a relocation against a section. We must | |
4723 | adjust by the amount that the section moved. */ | |
4724 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4725 | relocation = (section->output_section->vma | |
4726 | + section->output_offset | |
4727 | - section->vma); | |
4c3721d5 | 4728 | |
e68de5d5 ILT |
4729 | /* If this is a PC relative reloc, then the addend is |
4730 | the difference in VMA between the destination and the | |
4731 | source. We have just adjusted for the change in VMA | |
4732 | of the destination, so we must also adjust by the | |
4733 | change in VMA of the source. This is done below. */ | |
4c3721d5 ILT |
4734 | } |
4735 | ||
e68de5d5 ILT |
4736 | /* As described above, we must always adjust a PC relative |
4737 | reloc by the change in VMA of the source. */ | |
4738 | if (howto_table_ext[r_type].pc_relative) | |
4739 | relocation -= (input_section->output_section->vma | |
4740 | + input_section->output_offset | |
4741 | - input_section->vma); | |
4742 | ||
4c3721d5 ILT |
4743 | /* Change the addend if necessary. */ |
4744 | if (relocation != 0) | |
4745 | PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend); | |
4746 | ||
4747 | /* Change the address of the relocation. */ | |
4748 | PUT_WORD (output_bfd, | |
4749 | r_addr + input_section->output_offset, | |
4750 | rel->r_address); | |
4751 | } | |
4752 | else | |
4753 | { | |
4754 | bfd_reloc_status_type r; | |
4755 | ||
4756 | /* We are generating an executable, and must do a full | |
4757 | relocation. */ | |
4758 | if (r_extern) | |
4759 | { | |
4760 | struct aout_link_hash_entry *h; | |
4761 | ||
4762 | h = sym_hashes[r_index]; | |
e85e8bfe ILT |
4763 | |
4764 | if (check_dynamic_reloc != NULL) | |
4765 | { | |
4766 | boolean skip; | |
4767 | ||
4768 | if (! ((*check_dynamic_reloc) | |
4769 | (finfo->info, input_bfd, input_section, h, | |
4770 | (PTR) rel, &skip))) | |
4771 | return false; | |
4772 | if (skip) | |
4773 | continue; | |
4774 | } | |
4775 | ||
4c3721d5 | 4776 | if (h != (struct aout_link_hash_entry *) NULL |
6c97aedf ILT |
4777 | && (h->root.type == bfd_link_hash_defined |
4778 | || h->root.type == bfd_link_hash_defweak)) | |
4c3721d5 ILT |
4779 | { |
4780 | relocation = (h->root.u.def.value | |
4781 | + h->root.u.def.section->output_section->vma | |
4782 | + h->root.u.def.section->output_offset); | |
4783 | } | |
4298e311 | 4784 | else if (h != (struct aout_link_hash_entry *) NULL |
6c97aedf | 4785 | && h->root.type == bfd_link_hash_undefweak) |
4298e311 | 4786 | relocation = 0; |
4c3721d5 ILT |
4787 | else |
4788 | { | |
4789 | const char *name; | |
4790 | ||
4791 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
4792 | if (! ((*finfo->info->callbacks->undefined_symbol) | |
4793 | (finfo->info, name, input_bfd, input_section, | |
4794 | r_addr))) | |
4795 | return false; | |
4796 | relocation = 0; | |
4797 | } | |
4798 | } | |
4799 | else | |
4800 | { | |
4801 | asection *section; | |
4802 | ||
4803 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
e68de5d5 ILT |
4804 | |
4805 | /* If this is a PC relative reloc, then R_ADDEND is the | |
4806 | difference between the two vmas, or | |
4807 | old_dest_sec + old_dest_off - (old_src_sec + old_src_off) | |
4808 | where | |
4809 | old_dest_sec == section->vma | |
4810 | and | |
4811 | old_src_sec == input_section->vma | |
4812 | and | |
4813 | old_src_off == r_addr | |
4814 | ||
4815 | _bfd_final_link_relocate expects RELOCATION + | |
4816 | R_ADDEND to be the VMA of the destination minus | |
4817 | r_addr (the minus r_addr is because this relocation | |
4818 | is not pcrel_offset, which is a bit confusing and | |
4819 | should, perhaps, be changed), or | |
4820 | new_dest_sec | |
4821 | where | |
4822 | new_dest_sec == output_section->vma + output_offset | |
4823 | We arrange for this to happen by setting RELOCATION to | |
4824 | new_dest_sec + old_src_sec - old_dest_sec | |
4825 | ||
4826 | If this is not a PC relative reloc, then R_ADDEND is | |
4827 | simply the VMA of the destination, so we set | |
4828 | RELOCATION to the change in the destination VMA, or | |
4829 | new_dest_sec - old_dest_sec | |
4830 | */ | |
4c3721d5 ILT |
4831 | relocation = (section->output_section->vma |
4832 | + section->output_offset | |
4833 | - section->vma); | |
e68de5d5 ILT |
4834 | if (howto_table_ext[r_type].pc_relative) |
4835 | relocation += input_section->vma; | |
4c3721d5 ILT |
4836 | } |
4837 | ||
4c3721d5 ILT |
4838 | r = _bfd_final_link_relocate (howto_table_ext + r_type, |
4839 | input_bfd, input_section, | |
4840 | contents, r_addr, relocation, | |
4841 | r_addend); | |
4842 | if (r != bfd_reloc_ok) | |
4843 | { | |
4844 | switch (r) | |
4845 | { | |
4846 | default: | |
4847 | case bfd_reloc_outofrange: | |
4848 | abort (); | |
4849 | case bfd_reloc_overflow: | |
4991ebb9 ILT |
4850 | { |
4851 | const char *name; | |
4852 | ||
4853 | if (r_extern) | |
4854 | name = strings + GET_WORD (input_bfd, | |
4855 | syms[r_index].e_strx); | |
4856 | else | |
4857 | { | |
4858 | asection *s; | |
4859 | ||
4860 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
4861 | name = bfd_section_name (input_bfd, s); | |
4862 | } | |
4863 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
4864 | (finfo->info, name, howto_table_ext[r_type].name, | |
4865 | r_addend, input_bfd, input_section, r_addr))) | |
4866 | return false; | |
4867 | } | |
4c3721d5 ILT |
4868 | break; |
4869 | } | |
4870 | } | |
4871 | } | |
4872 | } | |
4873 | ||
4874 | return true; | |
4875 | } | |
ec099b4b ILT |
4876 | |
4877 | /* Handle a link order which is supposed to generate a reloc. */ | |
4878 | ||
4879 | static boolean | |
4880 | aout_link_reloc_link_order (finfo, o, p) | |
4881 | struct aout_final_link_info *finfo; | |
4882 | asection *o; | |
4883 | struct bfd_link_order *p; | |
4884 | { | |
4885 | struct bfd_link_order_reloc *pr; | |
4886 | int r_index; | |
4887 | int r_extern; | |
82b1edf7 | 4888 | reloc_howto_type *howto; |
ec099b4b ILT |
4889 | file_ptr *reloff_ptr; |
4890 | struct reloc_std_external srel; | |
4891 | struct reloc_ext_external erel; | |
4892 | PTR rel_ptr; | |
4893 | ||
4894 | pr = p->u.reloc.p; | |
4895 | ||
4896 | if (p->type == bfd_section_reloc_link_order) | |
4897 | { | |
4898 | r_extern = 0; | |
4587b578 | 4899 | if (bfd_is_abs_section (pr->u.section)) |
ec099b4b ILT |
4900 | r_index = N_ABS | N_EXT; |
4901 | else | |
4902 | { | |
4903 | BFD_ASSERT (pr->u.section->owner == finfo->output_bfd); | |
4904 | r_index = pr->u.section->target_index; | |
4905 | } | |
4906 | } | |
4907 | else | |
4908 | { | |
4909 | struct aout_link_hash_entry *h; | |
4910 | ||
4911 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); | |
4912 | r_extern = 1; | |
4913 | h = aout_link_hash_lookup (aout_hash_table (finfo->info), | |
4914 | pr->u.name, false, false, true); | |
4915 | if (h != (struct aout_link_hash_entry *) NULL | |
74942465 | 4916 | && h->indx >= 0) |
ec099b4b | 4917 | r_index = h->indx; |
74942465 ILT |
4918 | else if (h != NULL) |
4919 | { | |
4920 | /* We decided to strip this symbol, but it turns out that we | |
4921 | can't. Note that we lose the other and desc information | |
4922 | here. I don't think that will ever matter for a global | |
4923 | symbol. */ | |
4924 | h->indx = -2; | |
4925 | h->written = false; | |
4926 | if (! aout_link_write_other_symbol (h, (PTR) finfo)) | |
4927 | return false; | |
4928 | r_index = h->indx; | |
4929 | } | |
ec099b4b ILT |
4930 | else |
4931 | { | |
4932 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
4933 | (finfo->info, pr->u.name, (bfd *) NULL, | |
4934 | (asection *) NULL, (bfd_vma) 0))) | |
4935 | return false; | |
4936 | r_index = 0; | |
4937 | } | |
4938 | } | |
4939 | ||
4940 | howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc); | |
82b1edf7 | 4941 | if (howto == 0) |
ec099b4b ILT |
4942 | { |
4943 | bfd_set_error (bfd_error_bad_value); | |
4944 | return false; | |
4945 | } | |
4946 | ||
4947 | if (o == obj_textsec (finfo->output_bfd)) | |
4948 | reloff_ptr = &finfo->treloff; | |
4949 | else if (o == obj_datasec (finfo->output_bfd)) | |
4950 | reloff_ptr = &finfo->dreloff; | |
4951 | else | |
4952 | abort (); | |
4953 | ||
4954 | if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE) | |
4955 | { | |
4956 | int r_pcrel; | |
4957 | int r_baserel; | |
4958 | int r_jmptable; | |
4959 | int r_relative; | |
4960 | int r_length; | |
4961 | ||
f42fe159 ILT |
4962 | #ifdef MY_put_reloc |
4963 | MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto, &srel); | |
4964 | #else | |
ec099b4b ILT |
4965 | r_pcrel = howto->pc_relative; |
4966 | r_baserel = (howto->type & 8) != 0; | |
cb9461ff JK |
4967 | r_jmptable = (howto->type & 16) != 0; |
4968 | r_relative = (howto->type & 32) != 0; | |
ec099b4b ILT |
4969 | r_length = howto->size; |
4970 | ||
4971 | PUT_WORD (finfo->output_bfd, p->offset, srel.r_address); | |
4972 | if (finfo->output_bfd->xvec->header_byteorder_big_p) | |
4973 | { | |
4974 | srel.r_index[0] = r_index >> 16; | |
4975 | srel.r_index[1] = r_index >> 8; | |
4976 | srel.r_index[2] = r_index; | |
4977 | srel.r_type[0] = | |
4978 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
4979 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
4980 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
4981 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
4982 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
4983 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
4984 | } | |
4985 | else | |
4986 | { | |
4987 | srel.r_index[2] = r_index >> 16; | |
4988 | srel.r_index[1] = r_index >> 8; | |
4989 | srel.r_index[0] = r_index; | |
4990 | srel.r_type[0] = | |
4991 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
4992 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
4993 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
4994 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
4995 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
4996 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
4997 | } | |
f42fe159 | 4998 | #endif |
ec099b4b ILT |
4999 | rel_ptr = (PTR) &srel; |
5000 | ||
5001 | /* We have to write the addend into the object file, since | |
5002 | standard a.out relocs are in place. It would be more | |
5003 | reliable if we had the current contents of the file here, | |
5004 | rather than assuming zeroes, but we can't read the file since | |
5005 | it was opened using bfd_openw. */ | |
5006 | if (pr->addend != 0) | |
5007 | { | |
5008 | bfd_size_type size; | |
5009 | bfd_reloc_status_type r; | |
5010 | bfd_byte *buf; | |
5011 | boolean ok; | |
5012 | ||
5013 | size = bfd_get_reloc_size (howto); | |
e85e8bfe | 5014 | buf = (bfd_byte *) bfd_zmalloc (size); |
ec099b4b ILT |
5015 | if (buf == (bfd_byte *) NULL) |
5016 | { | |
5017 | bfd_set_error (bfd_error_no_memory); | |
5018 | return false; | |
5019 | } | |
5020 | r = _bfd_relocate_contents (howto, finfo->output_bfd, | |
5021 | pr->addend, buf); | |
5022 | switch (r) | |
5023 | { | |
5024 | case bfd_reloc_ok: | |
5025 | break; | |
5026 | default: | |
5027 | case bfd_reloc_outofrange: | |
5028 | abort (); | |
5029 | case bfd_reloc_overflow: | |
5030 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
5031 | (finfo->info, | |
5032 | (p->type == bfd_section_reloc_link_order | |
5033 | ? bfd_section_name (finfo->output_bfd, | |
5034 | pr->u.section) | |
5035 | : pr->u.name), | |
5036 | howto->name, pr->addend, (bfd *) NULL, | |
5037 | (asection *) NULL, (bfd_vma) 0))) | |
5038 | { | |
5039 | free (buf); | |
5040 | return false; | |
5041 | } | |
5042 | break; | |
5043 | } | |
5044 | ok = bfd_set_section_contents (finfo->output_bfd, o, | |
5045 | (PTR) buf, | |
5046 | (file_ptr) p->offset, | |
5047 | size); | |
5048 | free (buf); | |
5049 | if (! ok) | |
5050 | return false; | |
5051 | } | |
5052 | } | |
5053 | else | |
5054 | { | |
5055 | PUT_WORD (finfo->output_bfd, p->offset, erel.r_address); | |
5056 | ||
5057 | if (finfo->output_bfd->xvec->header_byteorder_big_p) | |
5058 | { | |
5059 | erel.r_index[0] = r_index >> 16; | |
5060 | erel.r_index[1] = r_index >> 8; | |
5061 | erel.r_index[2] = r_index; | |
5062 | erel.r_type[0] = | |
5063 | ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
5064 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
5065 | } | |
5066 | else | |
5067 | { | |
5068 | erel.r_index[2] = r_index >> 16; | |
5069 | erel.r_index[1] = r_index >> 8; | |
5070 | erel.r_index[0] = r_index; | |
5071 | erel.r_type[0] = | |
5072 | (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
5073 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
5074 | } | |
5075 | ||
5076 | PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend); | |
5077 | ||
5078 | rel_ptr = (PTR) &erel; | |
5079 | } | |
5080 | ||
5081 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 | |
5082 | || (bfd_write (rel_ptr, (bfd_size_type) 1, | |
5083 | obj_reloc_entry_size (finfo->output_bfd), | |
5084 | finfo->output_bfd) | |
5085 | != obj_reloc_entry_size (finfo->output_bfd))) | |
5086 | return false; | |
5087 | ||
5088 | *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd); | |
5089 | ||
5090 | /* Assert that the relocs have not run into the symbols, and that n | |
5091 | the text relocs have not run into the data relocs. */ | |
5092 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
5093 | && (reloff_ptr != &finfo->treloff | |
5094 | || (*reloff_ptr | |
5095 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
5096 | ||
5097 | return true; | |
5098 | } |