Commit | Line | Data |
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1f29e30b | 1 | /* BFD semi-generic back-end for a.out binaries. |
9783e04a | 2 | Copyright 1990, 1991, 1992, 1993, 1994 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 | ||
214f8f23 | 243 | CONST struct reloc_howto_struct * |
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); | |
a99c3d70 | 271 | default: return (CONST struct reloc_howto_struct *) 0; |
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); | |
a99c3d70 | 284 | default: return (CONST struct reloc_howto_struct *) 0; |
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 | ||
2aaaab7c | 565 | #ifdef STAT_FOR_EXEC |
f42fe159 ILT |
566 | /* The original heuristic doesn't work in some important cases. The |
567 | * a.out file has no information about the text start address. For | |
568 | * files (like kernels) linked to non-standard addresses (ld -Ttext | |
569 | * nnn) the entry point may not be between the default text start | |
570 | * (obj_textsec(abfd)->vma) and (obj_textsec(abfd)->vma) + text size | |
571 | * This is not just a mach issue. Many kernels are loaded at non | |
572 | * standard addresses. | |
573 | */ | |
11676adc | 574 | { |
f42fe159 ILT |
575 | struct stat stat_buf; |
576 | if (abfd->iostream | |
577 | && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0) | |
578 | && ((stat_buf.st_mode & 0111) != 0)) | |
11676adc SS |
579 | abfd->flags |= EXEC_P; |
580 | } | |
2aaaab7c | 581 | #else /* ! defined (STAT_FOR_EXEC) */ |
e6e265ce JG |
582 | /* Now that the segment addresses have been worked out, take a better |
583 | guess at whether the file is executable. If the entry point | |
584 | is within the text segment, assume it is. (This makes files | |
585 | executable even if their entry point address is 0, as long as | |
c188b0be | 586 | their text starts at zero.) |
e6e265ce JG |
587 | |
588 | At some point we should probably break down and stat the file and | |
589 | declare it executable if (one of) its 'x' bits are on... */ | |
590 | if ((execp->a_entry >= obj_textsec(abfd)->vma) && | |
6db82ea7 | 591 | (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size)) |
e6e265ce | 592 | abfd->flags |= EXEC_P; |
2aaaab7c | 593 | #endif /* ! defined (STAT_FOR_EXEC) */ |
214f8f23 KR |
594 | if (result) |
595 | { | |
1f29e30b | 596 | #if 0 /* These should be set correctly anyways. */ |
214f8f23 KR |
597 | abfd->sections = obj_textsec (abfd); |
598 | obj_textsec (abfd)->next = obj_datasec (abfd); | |
599 | obj_datasec (abfd)->next = obj_bsssec (abfd); | |
1f29e30b | 600 | #endif |
214f8f23 KR |
601 | } |
602 | else | |
603 | { | |
604 | free (rawptr); | |
605 | abfd->tdata.aout_data = oldrawptr; | |
606 | } | |
e6e265ce | 607 | return result; |
7ed4093a SC |
608 | } |
609 | ||
4e41b5aa SC |
610 | /* |
611 | FUNCTION | |
c188b0be | 612 | aout_@var{size}_mkobject |
6f715d66 | 613 | |
fa2b89f1 | 614 | SYNOPSIS |
c188b0be DM |
615 | boolean aout_@var{size}_mkobject, (bfd *abfd); |
616 | ||
617 | DESCRIPTION | |
618 | Initialize BFD @var{abfd} for use with a.out files. | |
6f715d66 | 619 | */ |
7ed4093a SC |
620 | |
621 | boolean | |
8eb5d4be JK |
622 | NAME(aout,mkobject) (abfd) |
623 | bfd *abfd; | |
7ed4093a | 624 | { |
6db82ea7 | 625 | struct aout_data_struct *rawptr; |
7ed4093a | 626 | |
68241b2b | 627 | bfd_set_error (bfd_error_system_call); |
7ed4093a SC |
628 | |
629 | /* Use an intermediate variable for clarity */ | |
2e235c93 | 630 | rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct )); |
c188b0be | 631 | |
7ed4093a | 632 | if (rawptr == NULL) { |
68241b2b | 633 | bfd_set_error (bfd_error_no_memory); |
7ed4093a SC |
634 | return false; |
635 | } | |
c188b0be | 636 | |
6db82ea7 | 637 | abfd->tdata.aout_data = rawptr; |
7ed4093a | 638 | exec_hdr (abfd) = &(rawptr->e); |
c188b0be | 639 | |
7ed4093a SC |
640 | obj_textsec (abfd) = (asection *)NULL; |
641 | obj_datasec (abfd) = (asection *)NULL; | |
642 | obj_bsssec (abfd) = (asection *)NULL; | |
c188b0be | 643 | |
7ed4093a SC |
644 | return true; |
645 | } | |
646 | ||
6f715d66 | 647 | |
4e41b5aa SC |
648 | /* |
649 | FUNCTION | |
c188b0be DM |
650 | aout_@var{size}_machine_type |
651 | ||
652 | SYNOPSIS | |
653 | enum machine_type aout_@var{size}_machine_type | |
654 | (enum bfd_architecture arch, | |
655 | unsigned long machine)); | |
6f715d66 | 656 | |
4e41b5aa SC |
657 | DESCRIPTION |
658 | Keep track of machine architecture and machine type for | |
c188b0be DM |
659 | a.out's. Return the <<machine_type>> for a particular |
660 | architecture and machine, or <<M_UNKNOWN>> if that exact architecture | |
661 | and machine can't be represented in a.out format. | |
7ed4093a | 662 | |
4e41b5aa | 663 | If the architecture is understood, machine type 0 (default) |
c188b0be | 664 | is always understood. |
6f715d66 | 665 | */ |
7ed4093a SC |
666 | |
667 | enum machine_type | |
9ae74960 | 668 | NAME(aout,machine_type) (arch, machine, unknown) |
8eb5d4be JK |
669 | enum bfd_architecture arch; |
670 | unsigned long machine; | |
9ae74960 | 671 | boolean *unknown; |
7ed4093a SC |
672 | { |
673 | enum machine_type arch_flags; | |
c188b0be | 674 | |
7ed4093a | 675 | arch_flags = M_UNKNOWN; |
9ae74960 | 676 | *unknown = true; |
c188b0be | 677 | |
7ed4093a SC |
678 | switch (arch) { |
679 | case bfd_arch_sparc: | |
680 | if (machine == 0) arch_flags = M_SPARC; | |
681 | break; | |
c188b0be | 682 | |
7ed4093a SC |
683 | case bfd_arch_m68k: |
684 | switch (machine) { | |
685 | case 0: arch_flags = M_68010; break; | |
9ae74960 | 686 | case 68000: arch_flags = M_UNKNOWN; *unknown = false; break; |
7ed4093a SC |
687 | case 68010: arch_flags = M_68010; break; |
688 | case 68020: arch_flags = M_68020; break; | |
689 | default: arch_flags = M_UNKNOWN; break; | |
690 | } | |
691 | break; | |
c188b0be | 692 | |
7ed4093a SC |
693 | case bfd_arch_i386: |
694 | if (machine == 0) arch_flags = M_386; | |
695 | break; | |
c188b0be | 696 | |
7ed4093a SC |
697 | case bfd_arch_a29k: |
698 | if (machine == 0) arch_flags = M_29K; | |
699 | break; | |
c188b0be | 700 | |
5cd3dcff KR |
701 | case bfd_arch_mips: |
702 | switch (machine) { | |
703 | case 0: | |
704 | case 2000: | |
705 | case 3000: arch_flags = M_MIPS1; break; | |
706 | case 4000: | |
707 | case 4400: | |
708 | case 6000: arch_flags = M_MIPS2; break; | |
709 | default: arch_flags = M_UNKNOWN; break; | |
710 | } | |
711 | break; | |
712 | ||
f42fe159 ILT |
713 | case bfd_arch_ns32k: |
714 | switch (machine) { | |
715 | case 0: arch_flags = M_NS32532; break; | |
716 | case 32032: arch_flags = M_NS32032; break; | |
717 | case 32532: arch_flags = M_NS32532; break; | |
718 | default: arch_flags = M_UNKNOWN; break; | |
719 | } | |
720 | break; | |
721 | ||
7ed4093a SC |
722 | default: |
723 | arch_flags = M_UNKNOWN; | |
7ed4093a | 724 | } |
9ae74960 ILT |
725 | |
726 | if (arch_flags != M_UNKNOWN) | |
727 | *unknown = false; | |
728 | ||
7ed4093a SC |
729 | return arch_flags; |
730 | } | |
731 | ||
9e2dad8e | 732 | |
4e41b5aa SC |
733 | /* |
734 | FUNCTION | |
c188b0be | 735 | aout_@var{size}_set_arch_mach |
6f715d66 | 736 | |
fa2b89f1 | 737 | SYNOPSIS |
c188b0be | 738 | boolean aout_@var{size}_set_arch_mach, |
6f715d66 | 739 | (bfd *, |
c188b0be | 740 | enum bfd_architecture arch, |
6f715d66 | 741 | unsigned long machine)); |
c188b0be DM |
742 | |
743 | DESCRIPTION | |
744 | Set the architecture and the machine of the BFD @var{abfd} to the | |
745 | values @var{arch} and @var{machine}. Verify that @var{abfd}'s format | |
746 | can support the architecture required. | |
6f715d66 SC |
747 | */ |
748 | ||
7ed4093a | 749 | boolean |
8eb5d4be JK |
750 | NAME(aout,set_arch_mach) (abfd, arch, machine) |
751 | bfd *abfd; | |
752 | enum bfd_architecture arch; | |
753 | unsigned long machine; | |
7ed4093a | 754 | { |
2e235c93 ILT |
755 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) |
756 | return false; | |
757 | ||
9ae74960 ILT |
758 | if (arch != bfd_arch_unknown) |
759 | { | |
760 | boolean unknown; | |
761 | ||
762 | NAME(aout,machine_type) (arch, machine, &unknown); | |
763 | if (unknown) | |
764 | return false; | |
765 | } | |
ce07dd7c | 766 | |
214f8f23 KR |
767 | /* Determine the size of a relocation entry */ |
768 | switch (arch) { | |
769 | case bfd_arch_sparc: | |
770 | case bfd_arch_a29k: | |
5cd3dcff | 771 | case bfd_arch_mips: |
214f8f23 KR |
772 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; |
773 | break; | |
774 | default: | |
775 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
776 | break; | |
777 | } | |
778 | ||
2768b3f7 | 779 | return (*aout_backend_info(abfd)->set_sizes) (abfd); |
7ed4093a | 780 | } |
7ed4093a | 781 | |
4c3721d5 ILT |
782 | static void |
783 | adjust_o_magic (abfd, execp) | |
784 | bfd *abfd; | |
785 | struct internal_exec *execp; | |
786 | { | |
787 | file_ptr pos = adata (abfd).exec_bytes_size; | |
788 | bfd_vma vma = 0; | |
789 | int pad = 0; | |
790 | ||
791 | /* Text. */ | |
792 | obj_textsec(abfd)->filepos = pos; | |
793 | pos += obj_textsec(abfd)->_raw_size; | |
794 | vma += obj_textsec(abfd)->_raw_size; | |
795 | ||
796 | /* Data. */ | |
797 | if (!obj_datasec(abfd)->user_set_vma) | |
798 | { | |
799 | #if 0 /* ?? Does alignment in the file image really matter? */ | |
800 | pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma; | |
801 | #endif | |
802 | obj_textsec(abfd)->_raw_size += pad; | |
803 | pos += pad; | |
804 | vma += pad; | |
805 | obj_datasec(abfd)->vma = vma; | |
806 | } | |
807 | obj_datasec(abfd)->filepos = pos; | |
808 | pos += obj_datasec(abfd)->_raw_size; | |
809 | vma += obj_datasec(abfd)->_raw_size; | |
810 | ||
811 | /* BSS. */ | |
812 | if (!obj_bsssec(abfd)->user_set_vma) | |
813 | { | |
814 | #if 0 | |
815 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; | |
816 | #endif | |
817 | obj_datasec(abfd)->_raw_size += pad; | |
818 | pos += pad; | |
819 | vma += pad; | |
820 | obj_bsssec(abfd)->vma = vma; | |
821 | } | |
f4945271 ILT |
822 | else |
823 | { | |
824 | /* The VMA of the .bss section is set by the the VMA of the | |
825 | .data section plus the size of the .data section. We may | |
826 | need to add padding bytes to make this true. */ | |
827 | pad = obj_bsssec (abfd)->vma - vma; | |
828 | if (pad > 0) | |
829 | { | |
830 | obj_datasec (abfd)->_raw_size += pad; | |
831 | pos += pad; | |
832 | } | |
833 | } | |
4c3721d5 ILT |
834 | obj_bsssec(abfd)->filepos = pos; |
835 | ||
836 | /* Fix up the exec header. */ | |
837 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
838 | execp->a_data = obj_datasec(abfd)->_raw_size; | |
839 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
840 | N_SET_MAGIC (*execp, OMAGIC); | |
841 | } | |
842 | ||
843 | static void | |
844 | adjust_z_magic (abfd, execp) | |
845 | bfd *abfd; | |
846 | struct internal_exec *execp; | |
847 | { | |
848 | bfd_size_type data_pad, text_pad; | |
849 | file_ptr text_end; | |
850 | CONST struct aout_backend_data *abdp; | |
851 | int ztih; /* Nonzero if text includes exec header. */ | |
4c3721d5 ILT |
852 | |
853 | abdp = aout_backend_info (abfd); | |
854 | ||
855 | /* Text. */ | |
0630aba5 ILT |
856 | ztih = (abdp != NULL |
857 | && (abdp->text_includes_header | |
858 | || obj_aout_subformat (abfd) == q_magic_format)); | |
4c3721d5 ILT |
859 | obj_textsec(abfd)->filepos = (ztih |
860 | ? adata(abfd).exec_bytes_size | |
0630aba5 | 861 | : adata(abfd).zmagic_disk_block_size); |
4c3721d5 | 862 | if (! obj_textsec(abfd)->user_set_vma) |
e1f99f60 ILT |
863 | { |
864 | /* ?? Do we really need to check for relocs here? */ | |
865 | obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC) | |
866 | ? 0 | |
867 | : (ztih | |
868 | ? (abdp->default_text_vma | |
869 | + adata(abfd).exec_bytes_size) | |
870 | : abdp->default_text_vma)); | |
871 | text_pad = 0; | |
872 | } | |
873 | else | |
874 | { | |
875 | /* The .text section is being loaded at an unusual address. We | |
876 | may need to pad it such that the .data section starts at a page | |
877 | boundary. */ | |
878 | if (ztih) | |
879 | text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma) | |
880 | & (adata (abfd).page_size - 1)); | |
881 | else | |
882 | text_pad = ((- obj_textsec (abfd)->vma) | |
883 | & (adata (abfd).page_size - 1)); | |
884 | } | |
885 | ||
4c3721d5 | 886 | /* Find start of data. */ |
0630aba5 ILT |
887 | if (ztih) |
888 | { | |
889 | text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size; | |
e1f99f60 | 890 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
0630aba5 ILT |
891 | } |
892 | else | |
893 | { | |
894 | /* Note that if page_size == zmagic_disk_block_size, then | |
895 | filepos == page_size, and this case is the same as the ztih | |
896 | case. */ | |
897 | text_end = obj_textsec (abfd)->_raw_size; | |
e1f99f60 | 898 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
0630aba5 ILT |
899 | text_end += obj_textsec (abfd)->filepos; |
900 | } | |
4c3721d5 ILT |
901 | obj_textsec(abfd)->_raw_size += text_pad; |
902 | text_end += text_pad; | |
903 | ||
904 | /* Data. */ | |
905 | if (!obj_datasec(abfd)->user_set_vma) | |
906 | { | |
907 | bfd_vma vma; | |
908 | vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size; | |
909 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
910 | } | |
4c3721d5 ILT |
911 | if (abdp && abdp->zmagic_mapped_contiguous) |
912 | { | |
913 | text_pad = (obj_datasec(abfd)->vma | |
914 | - obj_textsec(abfd)->vma | |
915 | - obj_textsec(abfd)->_raw_size); | |
916 | obj_textsec(abfd)->_raw_size += text_pad; | |
917 | } | |
918 | obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos | |
919 | + obj_textsec(abfd)->_raw_size); | |
920 | ||
921 | /* Fix up exec header while we're at it. */ | |
922 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
923 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) | |
924 | execp->a_text += adata(abfd).exec_bytes_size; | |
f5419a59 ILT |
925 | if (obj_aout_subformat (abfd) == q_magic_format) |
926 | N_SET_MAGIC (*execp, QMAGIC); | |
927 | else | |
928 | N_SET_MAGIC (*execp, ZMAGIC); | |
5330499f | 929 | |
4c3721d5 | 930 | /* Spec says data section should be rounded up to page boundary. */ |
4c3721d5 ILT |
931 | obj_datasec(abfd)->_raw_size |
932 | = align_power (obj_datasec(abfd)->_raw_size, | |
933 | obj_bsssec(abfd)->alignment_power); | |
934 | execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size, | |
935 | adata(abfd).page_size); | |
936 | data_pad = execp->a_data - obj_datasec(abfd)->_raw_size; | |
937 | ||
938 | /* BSS. */ | |
939 | if (!obj_bsssec(abfd)->user_set_vma) | |
940 | obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma | |
941 | + obj_datasec(abfd)->_raw_size); | |
5330499f DM |
942 | /* If the BSS immediately follows the data section and extra space |
943 | in the page is left after the data section, fudge data | |
944 | in the header so that the bss section looks smaller by that | |
945 | amount. We'll start the bss section there, and lie to the OS. | |
946 | (Note that a linker script, as well as the above assignment, | |
947 | could have explicitly set the BSS vma to immediately follow | |
948 | the data section.) */ | |
949 | if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power) | |
950 | == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size) | |
951 | execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 : | |
952 | obj_bsssec(abfd)->_raw_size - data_pad; | |
953 | else | |
954 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
4c3721d5 ILT |
955 | } |
956 | ||
957 | static void | |
958 | adjust_n_magic (abfd, execp) | |
959 | bfd *abfd; | |
960 | struct internal_exec *execp; | |
961 | { | |
962 | file_ptr pos = adata(abfd).exec_bytes_size; | |
963 | bfd_vma vma = 0; | |
964 | int pad; | |
965 | ||
966 | /* Text. */ | |
967 | obj_textsec(abfd)->filepos = pos; | |
968 | if (!obj_textsec(abfd)->user_set_vma) | |
969 | obj_textsec(abfd)->vma = vma; | |
970 | else | |
971 | vma = obj_textsec(abfd)->vma; | |
972 | pos += obj_textsec(abfd)->_raw_size; | |
973 | vma += obj_textsec(abfd)->_raw_size; | |
974 | ||
975 | /* Data. */ | |
976 | obj_datasec(abfd)->filepos = pos; | |
977 | if (!obj_datasec(abfd)->user_set_vma) | |
978 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
979 | vma = obj_datasec(abfd)->vma; | |
980 | ||
981 | /* Since BSS follows data immediately, see if it needs alignment. */ | |
982 | vma += obj_datasec(abfd)->_raw_size; | |
983 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; | |
984 | obj_datasec(abfd)->_raw_size += pad; | |
985 | pos += obj_datasec(abfd)->_raw_size; | |
986 | ||
987 | /* BSS. */ | |
988 | if (!obj_bsssec(abfd)->user_set_vma) | |
989 | obj_bsssec(abfd)->vma = vma; | |
990 | else | |
991 | vma = obj_bsssec(abfd)->vma; | |
992 | ||
993 | /* Fix up exec header. */ | |
994 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
995 | execp->a_data = obj_datasec(abfd)->_raw_size; | |
996 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
997 | N_SET_MAGIC (*execp, NMAGIC); | |
998 | } | |
999 | ||
ce07dd7c | 1000 | boolean |
8eb5d4be JK |
1001 | NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end) |
1002 | bfd *abfd; | |
1003 | bfd_size_type *text_size; | |
1004 | file_ptr *text_end; | |
ce07dd7c KR |
1005 | { |
1006 | struct internal_exec *execp = exec_hdr (abfd); | |
4c3721d5 | 1007 | |
ec6b18c4 ILT |
1008 | if (! NAME(aout,make_sections) (abfd)) |
1009 | return false; | |
1010 | ||
f5419a59 ILT |
1011 | if (adata(abfd).magic != undecided_magic) |
1012 | return true; | |
4c3721d5 | 1013 | |
c188b0be | 1014 | obj_textsec(abfd)->_raw_size = |
ce07dd7c KR |
1015 | align_power(obj_textsec(abfd)->_raw_size, |
1016 | obj_textsec(abfd)->alignment_power); | |
1017 | ||
1018 | *text_size = obj_textsec (abfd)->_raw_size; | |
1019 | /* Rule (heuristic) for when to pad to a new page. Note that there | |
4c3721d5 ILT |
1020 | are (at least) two ways demand-paged (ZMAGIC) files have been |
1021 | handled. Most Berkeley-based systems start the text segment at | |
1022 | (PAGE_SIZE). However, newer versions of SUNOS start the text | |
1023 | segment right after the exec header; the latter is counted in the | |
1024 | text segment size, and is paged in by the kernel with the rest of | |
1025 | the text. */ | |
ce07dd7c KR |
1026 | |
1027 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1028 | to understand enough to implement it. Better would probably be to go | |
1029 | right from BFD flags to alignment/positioning characteristics. But the | |
1030 | old code was sloppy enough about handling the flags, and had enough | |
1031 | other magic, that it was a little hard for me to understand. I think | |
1032 | I understand it better now, but I haven't time to do the cleanup this | |
1033 | minute. */ | |
4c3721d5 ILT |
1034 | |
1035 | if (abfd->flags & D_PAGED) | |
1036 | /* Whether or not WP_TEXT is set -- let D_PAGED override. */ | |
4c3721d5 ILT |
1037 | adata(abfd).magic = z_magic; |
1038 | else if (abfd->flags & WP_TEXT) | |
1039 | adata(abfd).magic = n_magic; | |
1040 | else | |
1041 | adata(abfd).magic = o_magic; | |
ce07dd7c KR |
1042 | |
1043 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1044 | #if __GNUC__ >= 2 | |
1045 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1046 | ({ char *str; | |
1047 | switch (adata(abfd).magic) { | |
1048 | case n_magic: str = "NMAGIC"; break; | |
1049 | case o_magic: str = "OMAGIC"; break; | |
1050 | case z_magic: str = "ZMAGIC"; break; | |
1051 | default: abort (); | |
1052 | } | |
1053 | str; | |
1054 | }), | |
4c3721d5 ILT |
1055 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, |
1056 | obj_textsec(abfd)->alignment_power, | |
1057 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, | |
1058 | obj_datasec(abfd)->alignment_power, | |
1059 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size, | |
1060 | obj_bsssec(abfd)->alignment_power); | |
ce07dd7c KR |
1061 | #endif |
1062 | #endif | |
1063 | ||
1064 | switch (adata(abfd).magic) | |
1065 | { | |
1066 | case o_magic: | |
4c3721d5 | 1067 | adjust_o_magic (abfd, execp); |
ce07dd7c KR |
1068 | break; |
1069 | case z_magic: | |
4c3721d5 | 1070 | adjust_z_magic (abfd, execp); |
ce07dd7c KR |
1071 | break; |
1072 | case n_magic: | |
4c3721d5 | 1073 | adjust_n_magic (abfd, execp); |
ce07dd7c KR |
1074 | break; |
1075 | default: | |
1076 | abort (); | |
1077 | } | |
4c3721d5 | 1078 | |
ce07dd7c KR |
1079 | #ifdef BFD_AOUT_DEBUG |
1080 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
4c3721d5 ILT |
1081 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, |
1082 | obj_textsec(abfd)->filepos, | |
1083 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, | |
1084 | obj_datasec(abfd)->filepos, | |
ce07dd7c KR |
1085 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size); |
1086 | #endif | |
4c3721d5 | 1087 | |
d047d16a | 1088 | return true; |
ce07dd7c KR |
1089 | } |
1090 | ||
4e41b5aa SC |
1091 | /* |
1092 | FUNCTION | |
c188b0be | 1093 | aout_@var{size}_new_section_hook |
4e41b5aa | 1094 | |
fa2b89f1 | 1095 | SYNOPSIS |
c188b0be | 1096 | boolean aout_@var{size}_new_section_hook, |
9e2dad8e JG |
1097 | (bfd *abfd, |
1098 | asection *newsect)); | |
c188b0be DM |
1099 | |
1100 | DESCRIPTION | |
1101 | Called by the BFD in response to a @code{bfd_make_section} | |
1102 | request. | |
6f715d66 | 1103 | */ |
7ed4093a | 1104 | boolean |
8eb5d4be JK |
1105 | NAME(aout,new_section_hook) (abfd, newsect) |
1106 | bfd *abfd; | |
1107 | asection *newsect; | |
7ed4093a | 1108 | { |
6db82ea7 SC |
1109 | /* align to double at least */ |
1110 | newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; | |
3f7607af | 1111 | |
c188b0be DM |
1112 | |
1113 | if (bfd_get_format (abfd) == bfd_object) | |
6db82ea7 SC |
1114 | { |
1115 | if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) { | |
1116 | obj_textsec(abfd)= newsect; | |
e48f985c | 1117 | newsect->target_index = N_TEXT; |
6db82ea7 SC |
1118 | return true; |
1119 | } | |
c188b0be | 1120 | |
6db82ea7 SC |
1121 | if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) { |
1122 | obj_datasec(abfd) = newsect; | |
e48f985c | 1123 | newsect->target_index = N_DATA; |
6db82ea7 SC |
1124 | return true; |
1125 | } | |
c188b0be | 1126 | |
6db82ea7 SC |
1127 | if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) { |
1128 | obj_bsssec(abfd) = newsect; | |
e48f985c | 1129 | newsect->target_index = N_BSS; |
6db82ea7 SC |
1130 | return true; |
1131 | } | |
1132 | ||
1133 | } | |
c188b0be | 1134 | |
6db82ea7 SC |
1135 | /* We allow more than three sections internally */ |
1136 | return true; | |
7ed4093a SC |
1137 | } |
1138 | ||
1139 | boolean | |
8eb5d4be JK |
1140 | NAME(aout,set_section_contents) (abfd, section, location, offset, count) |
1141 | bfd *abfd; | |
1142 | sec_ptr section; | |
1143 | PTR location; | |
1144 | file_ptr offset; | |
1145 | bfd_size_type count; | |
7ed4093a | 1146 | { |
7b02b4ed | 1147 | file_ptr text_end; |
7b02b4ed | 1148 | bfd_size_type text_size; |
ce07dd7c | 1149 | |
7ed4093a | 1150 | if (abfd->output_has_begun == false) |
ebd24135 ILT |
1151 | { |
1152 | if (NAME(aout,adjust_sizes_and_vmas) (abfd, | |
1153 | &text_size, | |
1154 | &text_end) == false) | |
1155 | return false; | |
9e2dad8e | 1156 | } |
12e7087f | 1157 | |
7ed4093a | 1158 | /* regardless, once we know what we're doing, we might as well get going */ |
c188b0be | 1159 | if (section != obj_bsssec(abfd)) |
7ed4093a | 1160 | { |
29e626eb ILT |
1161 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0) |
1162 | return false; | |
c188b0be | 1163 | |
7ed4093a SC |
1164 | if (count) { |
1165 | return (bfd_write ((PTR)location, 1, count, abfd) == count) ? | |
1166 | true : false; | |
1167 | } | |
6db82ea7 | 1168 | return true; |
7ed4093a SC |
1169 | } |
1170 | return true; | |
1171 | } | |
1172 | \f | |
5c8444f8 ILT |
1173 | /* Read the external symbols from an a.out file. */ |
1174 | ||
1175 | static boolean | |
1176 | aout_get_external_symbols (abfd) | |
1177 | bfd *abfd; | |
1178 | { | |
1179 | if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL) | |
1180 | { | |
1181 | bfd_size_type count; | |
1182 | struct external_nlist *syms; | |
1183 | ||
1184 | count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE; | |
1185 | ||
1186 | /* We allocate using malloc to make the values easy to free | |
1187 | later on. If we put them on the obstack it might not be | |
1188 | possible to free them. */ | |
1189 | syms = ((struct external_nlist *) | |
1190 | malloc ((size_t) count * EXTERNAL_NLIST_SIZE)); | |
1191 | if (syms == (struct external_nlist *) NULL && count != 0) | |
1192 | { | |
1193 | bfd_set_error (bfd_error_no_memory); | |
1194 | return false; | |
1195 | } | |
1196 | ||
1197 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
1198 | || (bfd_read (syms, 1, exec_hdr (abfd)->a_syms, abfd) | |
1199 | != exec_hdr (abfd)->a_syms)) | |
1200 | { | |
1201 | free (syms); | |
1202 | return false; | |
1203 | } | |
1204 | ||
1205 | obj_aout_external_syms (abfd) = syms; | |
1206 | obj_aout_external_sym_count (abfd) = count; | |
1207 | } | |
1208 | ||
4f019d04 ILT |
1209 | if (obj_aout_external_strings (abfd) == NULL |
1210 | && exec_hdr (abfd)->a_syms != 0) | |
5c8444f8 ILT |
1211 | { |
1212 | unsigned char string_chars[BYTES_IN_WORD]; | |
1213 | bfd_size_type stringsize; | |
1214 | char *strings; | |
1215 | ||
1216 | /* Get the size of the strings. */ | |
1217 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
1218 | || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd) | |
1219 | != BYTES_IN_WORD)) | |
1220 | return false; | |
1221 | stringsize = GET_WORD (abfd, string_chars); | |
1222 | ||
1223 | strings = (char *) malloc ((size_t) stringsize + 1); | |
1224 | if (strings == NULL) | |
1225 | { | |
1226 | bfd_set_error (bfd_error_no_memory); | |
1227 | return false; | |
1228 | } | |
1229 | ||
1230 | /* Skip space for the string count in the buffer for convenience | |
1231 | when using indexes. */ | |
1232 | if (bfd_read (strings + BYTES_IN_WORD, 1, stringsize - BYTES_IN_WORD, | |
1233 | abfd) | |
1234 | != stringsize - BYTES_IN_WORD) | |
1235 | { | |
1236 | free (strings); | |
1237 | return false; | |
1238 | } | |
1239 | ||
1afd2380 ILT |
1240 | /* Ensure that a zero index yields an empty string. */ |
1241 | strings[0] = '\0'; | |
1242 | ||
5c8444f8 ILT |
1243 | /* Sanity preservation. */ |
1244 | strings[stringsize] = '\0'; | |
1245 | ||
1246 | obj_aout_external_strings (abfd) = strings; | |
1247 | obj_aout_external_string_size (abfd) = stringsize; | |
1248 | } | |
1249 | ||
1250 | return true; | |
1251 | } | |
1252 | ||
4298e311 ILT |
1253 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type |
1254 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1255 | nlist structure. This function is responsible for setting | |
1256 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
c188b0be | 1257 | |
9783e04a | 1258 | static boolean |
4298e311 ILT |
1259 | translate_from_native_sym_flags (abfd, cache_ptr) |
1260 | bfd *abfd; | |
1261 | aout_symbol_type *cache_ptr; | |
9e2dad8e | 1262 | { |
4298e311 ILT |
1263 | flagword visible; |
1264 | ||
1265 | if ((cache_ptr->type & N_STAB) != 0 | |
1266 | || cache_ptr->type == N_FN) | |
1267 | { | |
1268 | asection *sec; | |
1269 | ||
1270 | /* This is a debugging symbol. */ | |
1271 | ||
1272 | cache_ptr->symbol.flags = BSF_DEBUGGING; | |
1273 | ||
1274 | /* Work out the symbol section. */ | |
1275 | switch (cache_ptr->type & N_TYPE) | |
1276 | { | |
1277 | case N_TEXT: | |
1278 | case N_FN: | |
1279 | sec = obj_textsec (abfd); | |
1280 | break; | |
1281 | case N_DATA: | |
1282 | sec = obj_datasec (abfd); | |
1283 | break; | |
1284 | case N_BSS: | |
1285 | sec = obj_bsssec (abfd); | |
1286 | break; | |
1287 | default: | |
1288 | case N_ABS: | |
4587b578 | 1289 | sec = bfd_abs_section_ptr; |
4298e311 ILT |
1290 | break; |
1291 | } | |
1292 | ||
1293 | cache_ptr->symbol.section = sec; | |
1294 | cache_ptr->symbol.value -= sec->vma; | |
1295 | ||
1296 | return true; | |
1297 | } | |
1298 | ||
1299 | /* Get the default visibility. This does not apply to all types, so | |
1300 | we just hold it in a local variable to use if wanted. */ | |
1301 | if ((cache_ptr->type & N_EXT) == 0) | |
1302 | visible = BSF_LOCAL; | |
1303 | else | |
1304 | visible = BSF_GLOBAL; | |
1305 | ||
1306 | switch (cache_ptr->type) | |
6db82ea7 | 1307 | { |
4298e311 ILT |
1308 | default: |
1309 | case N_ABS: case N_ABS | N_EXT: | |
4587b578 | 1310 | cache_ptr->symbol.section = bfd_abs_section_ptr; |
4298e311 ILT |
1311 | cache_ptr->symbol.flags = visible; |
1312 | break; | |
1313 | ||
1314 | case N_UNDF | N_EXT: | |
1315 | if (cache_ptr->symbol.value != 0) | |
1316 | { | |
1317 | /* This is a common symbol. */ | |
1318 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
4587b578 | 1319 | cache_ptr->symbol.section = bfd_com_section_ptr; |
4298e311 ILT |
1320 | } |
1321 | else | |
1322 | { | |
1323 | cache_ptr->symbol.flags = 0; | |
4587b578 | 1324 | cache_ptr->symbol.section = bfd_und_section_ptr; |
4298e311 ILT |
1325 | } |
1326 | break; | |
1327 | ||
1328 | case N_TEXT: case N_TEXT | N_EXT: | |
1329 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1330 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1331 | cache_ptr->symbol.flags = visible; | |
1332 | break; | |
1333 | ||
2cd086e3 ILT |
1334 | /* N_SETV symbols used to represent set vectors placed in the |
1335 | data section. They are no longer generated. Theoretically, | |
1336 | it was possible to extract the entries and combine them with | |
1337 | new ones, although I don't know if that was ever actually | |
1338 | done. Unless that feature is restored, treat them as data | |
1339 | symbols. */ | |
1340 | case N_SETV: case N_SETV | N_EXT: | |
4298e311 ILT |
1341 | case N_DATA: case N_DATA | N_EXT: |
1342 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1343 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1344 | cache_ptr->symbol.flags = visible; | |
1345 | break; | |
1346 | ||
1347 | case N_BSS: case N_BSS | N_EXT: | |
1348 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1349 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1350 | cache_ptr->symbol.flags = visible; | |
1351 | break; | |
1352 | ||
964affdc DM |
1353 | case N_SETA: case N_SETA | N_EXT: |
1354 | case N_SETT: case N_SETT | N_EXT: | |
1355 | case N_SETD: case N_SETD | N_EXT: | |
1356 | case N_SETB: case N_SETB | N_EXT: | |
ebd24135 | 1357 | { |
ebd24135 | 1358 | asection *section; |
4298e311 | 1359 | arelent_chain *reloc; |
ebd24135 | 1360 | asection *into_section; |
9783e04a | 1361 | |
4298e311 ILT |
1362 | /* This is a set symbol. The name of the symbol is the name |
1363 | of the set (e.g., __CTOR_LIST__). The value of the symbol | |
1364 | is the value to add to the set. We create a section with | |
1365 | the same name as the symbol, and add a reloc to insert the | |
1366 | appropriate value into the section. | |
1367 | ||
1368 | This action is actually obsolete; it used to make the | |
1369 | linker do the right thing, but the linker no longer uses | |
1370 | this function. */ | |
1371 | ||
1372 | section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name); | |
1373 | if (section == NULL) | |
1374 | { | |
1375 | char *copy; | |
1376 | ||
1377 | copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1); | |
1378 | if (copy == NULL) | |
1379 | { | |
1380 | bfd_set_error (bfd_error_no_memory); | |
1381 | return false; | |
1382 | } | |
1383 | ||
1384 | strcpy (copy, cache_ptr->symbol.name); | |
1385 | section = bfd_make_section (abfd, copy); | |
1386 | if (section == NULL) | |
1387 | return false; | |
1388 | } | |
1389 | ||
1390 | reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain)); | |
1391 | if (reloc == NULL) | |
9783e04a | 1392 | { |
68241b2b | 1393 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
1394 | return false; |
1395 | } | |
1396 | ||
4298e311 ILT |
1397 | /* Build a relocation entry for the constructor. */ |
1398 | switch (cache_ptr->type & N_TYPE) | |
a99c3d70 | 1399 | { |
4298e311 | 1400 | case N_SETA: |
4587b578 | 1401 | into_section = bfd_abs_section_ptr; |
ebd24135 ILT |
1402 | cache_ptr->type = N_ABS; |
1403 | break; | |
4298e311 ILT |
1404 | case N_SETT: |
1405 | into_section = obj_textsec (abfd); | |
ebd24135 ILT |
1406 | cache_ptr->type = N_TEXT; |
1407 | break; | |
4298e311 ILT |
1408 | case N_SETD: |
1409 | into_section = obj_datasec (abfd); | |
ebd24135 ILT |
1410 | cache_ptr->type = N_DATA; |
1411 | break; | |
4298e311 ILT |
1412 | case N_SETB: |
1413 | into_section = obj_bsssec (abfd); | |
ebd24135 ILT |
1414 | cache_ptr->type = N_BSS; |
1415 | break; | |
ebd24135 | 1416 | } |
88dfcd68 | 1417 | |
4298e311 ILT |
1418 | /* Build a relocation pointing into the constructor section |
1419 | pointing at the symbol in the set vector specified. */ | |
ebd24135 | 1420 | reloc->relent.addend = cache_ptr->symbol.value; |
4298e311 | 1421 | cache_ptr->symbol.section = into_section; |
ebd24135 | 1422 | reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr; |
6db82ea7 | 1423 | |
4298e311 ILT |
1424 | /* We modify the symbol to belong to a section depending upon |
1425 | the name of the symbol, and add to the size of the section | |
1426 | to contain a pointer to the symbol. Build a reloc entry to | |
1427 | relocate to this symbol attached to this section. */ | |
a8a916c8 | 1428 | section->flags = SEC_CONSTRUCTOR | SEC_RELOC; |
a99c3d70 | 1429 | |
ebd24135 ILT |
1430 | section->reloc_count++; |
1431 | section->alignment_power = 2; | |
a99c3d70 | 1432 | |
ebd24135 ILT |
1433 | reloc->next = section->constructor_chain; |
1434 | section->constructor_chain = reloc; | |
1435 | reloc->relent.address = section->_raw_size; | |
4298e311 ILT |
1436 | section->_raw_size += BYTES_IN_WORD; |
1437 | ||
f42fe159 | 1438 | reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd); |
a99c3d70 | 1439 | |
ebd24135 ILT |
1440 | cache_ptr->symbol.flags |= BSF_CONSTRUCTOR; |
1441 | } | |
1442 | break; | |
0c205af2 | 1443 | |
4298e311 ILT |
1444 | case N_WARNING: |
1445 | /* This symbol is the text of a warning message. The next | |
1446 | symbol is the symbol to associate the warning with. If a | |
1447 | reference is made to that symbol, a warning is issued. */ | |
1448 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
ebd24135 | 1449 | |
4298e311 ILT |
1450 | /* @@ Stuffing pointers into integers is a no-no. We can |
1451 | usually get away with it if the integer is large enough | |
1452 | though. */ | |
1453 | if (sizeof (cache_ptr + 1) > sizeof (bfd_vma)) | |
1454 | abort (); | |
1455 | cache_ptr->symbol.value = (bfd_vma) (cache_ptr + 1); | |
ebd24135 | 1456 | |
4587b578 | 1457 | cache_ptr->symbol.section = bfd_abs_section_ptr; |
ebd24135 | 1458 | |
4298e311 | 1459 | break; |
ebd24135 | 1460 | |
4298e311 ILT |
1461 | case N_INDR: case N_INDR | N_EXT: |
1462 | /* An indirect symbol. This consists of two symbols in a row. | |
1463 | The first symbol is the name of the indirection. The second | |
1464 | symbol is the name of the target. A reference to the first | |
1465 | symbol becomes a reference to the second. */ | |
1466 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible; | |
ebd24135 | 1467 | |
4298e311 ILT |
1468 | /* @@ Stuffing pointers into integers is a no-no. We can |
1469 | usually get away with it if the integer is large enough | |
1470 | though. */ | |
1471 | if (sizeof (cache_ptr + 1) > sizeof (bfd_vma)) | |
1472 | abort (); | |
1473 | cache_ptr->symbol.value = (bfd_vma) (cache_ptr + 1); | |
ebd24135 | 1474 | |
4587b578 | 1475 | cache_ptr->symbol.section = bfd_ind_section_ptr; |
a99c3d70 | 1476 | |
4298e311 ILT |
1477 | break; |
1478 | ||
1479 | case N_WEAKU: | |
4587b578 | 1480 | cache_ptr->symbol.section = bfd_und_section_ptr; |
4298e311 ILT |
1481 | cache_ptr->symbol.flags = BSF_WEAK; |
1482 | break; | |
1483 | ||
1484 | case N_WEAKA: | |
4587b578 | 1485 | cache_ptr->symbol.section = bfd_abs_section_ptr; |
4298e311 ILT |
1486 | cache_ptr->symbol.flags = BSF_WEAK; |
1487 | break; | |
1488 | ||
1489 | case N_WEAKT: | |
1490 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1491 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1492 | cache_ptr->symbol.flags = BSF_WEAK; | |
1493 | break; | |
1494 | ||
1495 | case N_WEAKD: | |
1496 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1497 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1498 | cache_ptr->symbol.flags = BSF_WEAK; | |
1499 | break; | |
1500 | ||
1501 | case N_WEAKB: | |
1502 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1503 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1504 | cache_ptr->symbol.flags = BSF_WEAK; | |
1505 | break; | |
a99c3d70 | 1506 | } |
4298e311 | 1507 | |
9783e04a | 1508 | return true; |
7ed4093a SC |
1509 | } |
1510 | ||
4298e311 | 1511 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ |
6db82ea7 | 1512 | |
4c3721d5 | 1513 | static boolean |
4298e311 | 1514 | translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer) |
8eb5d4be | 1515 | bfd *abfd; |
4298e311 ILT |
1516 | asymbol *cache_ptr; |
1517 | struct external_nlist *sym_pointer; | |
7ed4093a SC |
1518 | { |
1519 | bfd_vma value = cache_ptr->value; | |
1520 | ||
4298e311 ILT |
1521 | /* Mask out any existing type bits in case copying from one section |
1522 | to another. */ | |
10dea9ed | 1523 | sym_pointer->e_type[0] &= ~N_TYPE; |
a99c3d70 | 1524 | |
4587b578 | 1525 | if (bfd_is_abs_section (bfd_get_section (cache_ptr))) |
3caa6924 | 1526 | sym_pointer->e_type[0] |= N_ABS; |
f5419a59 ILT |
1527 | else if (bfd_get_section (cache_ptr) == obj_textsec (abfd) |
1528 | || (bfd_get_section (cache_ptr)->output_section | |
1529 | == obj_textsec (abfd))) | |
3caa6924 | 1530 | sym_pointer->e_type[0] |= N_TEXT; |
f5419a59 ILT |
1531 | else if (bfd_get_section (cache_ptr) == obj_datasec (abfd) |
1532 | || (bfd_get_section (cache_ptr)->output_section | |
1533 | == obj_datasec (abfd))) | |
a99c3d70 | 1534 | sym_pointer->e_type[0] |= N_DATA; |
f5419a59 ILT |
1535 | else if (bfd_get_section (cache_ptr) == obj_bsssec (abfd) |
1536 | || (bfd_get_section (cache_ptr)->output_section | |
1537 | == obj_bsssec (abfd))) | |
3caa6924 | 1538 | sym_pointer->e_type[0] |= N_BSS; |
4298e311 ILT |
1539 | else if (bfd_get_section (cache_ptr) == NULL) |
1540 | { | |
1541 | /* Protect the bfd_is_com_section call. This case occurs, e.g., | |
1542 | for the *DEBUG* section of a COFF file. */ | |
1543 | bfd_set_error (bfd_error_nonrepresentable_section); | |
1544 | return false; | |
1545 | } | |
4587b578 ILT |
1546 | else if (bfd_is_und_section (bfd_get_section (cache_ptr))) |
1547 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1548 | else if (bfd_is_ind_section (bfd_get_section (cache_ptr))) | |
1549 | sym_pointer->e_type[0] = N_INDR; | |
4298e311 ILT |
1550 | else if (bfd_is_com_section (bfd_get_section (cache_ptr))) |
1551 | sym_pointer->e_type[0] = N_UNDF | N_EXT; | |
1552 | else | |
1553 | { | |
1554 | bfd_set_error (bfd_error_nonrepresentable_section); | |
1555 | return false; | |
1556 | } | |
6f56c941 | 1557 | |
6db82ea7 | 1558 | /* Turn the symbol from section relative to absolute again */ |
1afd2380 ILT |
1559 | if (cache_ptr->section->output_section != NULL) |
1560 | value += (cache_ptr->section->output_section->vma | |
1561 | + cache_ptr->section->output_offset); | |
1562 | else | |
1563 | value += cache_ptr->section->vma; | |
c188b0be | 1564 | |
4298e311 | 1565 | if ((cache_ptr->flags & BSF_WARNING) != 0) |
d7e34f67 | 1566 | sym_pointer->e_type[0] = N_WARNING; |
c188b0be | 1567 | |
4298e311 ILT |
1568 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) |
1569 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1570 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
3caa6924 | 1571 | sym_pointer->e_type[0] |= N_EXT; |
4298e311 ILT |
1572 | |
1573 | if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0) | |
1574 | { | |
1575 | int type = ((aout_symbol_type *) cache_ptr)->type; | |
1576 | switch (type) | |
1577 | { | |
1578 | case N_ABS: type = N_SETA; break; | |
1579 | case N_TEXT: type = N_SETT; break; | |
1580 | case N_DATA: type = N_SETD; break; | |
1581 | case N_BSS: type = N_SETB; break; | |
1582 | } | |
1583 | sym_pointer->e_type[0] = type; | |
1584 | } | |
1585 | ||
1586 | if ((cache_ptr->flags & BSF_WEAK) != 0) | |
1587 | { | |
1588 | int type; | |
1589 | ||
1590 | switch (sym_pointer->e_type[0] & N_TYPE) | |
1591 | { | |
1592 | default: | |
1593 | case N_ABS: type = N_WEAKA; break; | |
1594 | case N_TEXT: type = N_WEAKT; break; | |
1595 | case N_DATA: type = N_WEAKD; break; | |
1596 | case N_BSS: type = N_WEAKB; break; | |
1597 | case N_UNDF: type = N_WEAKU; break; | |
1598 | } | |
1599 | sym_pointer->e_type[0] = type; | |
1600 | } | |
6db82ea7 | 1601 | |
7ed4093a | 1602 | PUT_WORD(abfd, value, sym_pointer->e_value); |
4c3721d5 ILT |
1603 | |
1604 | return true; | |
7ed4093a SC |
1605 | } |
1606 | \f | |
1607 | /* Native-level interface to symbols. */ | |
1608 | ||
7ed4093a | 1609 | asymbol * |
8eb5d4be JK |
1610 | NAME(aout,make_empty_symbol) (abfd) |
1611 | bfd *abfd; | |
9e2dad8e JG |
1612 | { |
1613 | aout_symbol_type *new = | |
1614 | (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type)); | |
9783e04a DM |
1615 | if (!new) |
1616 | { | |
68241b2b | 1617 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
1618 | return NULL; |
1619 | } | |
9e2dad8e | 1620 | new->symbol.the_bfd = abfd; |
fa2b89f1 | 1621 | |
9e2dad8e JG |
1622 | return &new->symbol; |
1623 | } | |
7ed4093a | 1624 | |
0ee75d02 ILT |
1625 | /* Translate a set of internal symbols into external symbols. */ |
1626 | ||
fa77c704 ILT |
1627 | boolean |
1628 | NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic) | |
0ee75d02 ILT |
1629 | bfd *abfd; |
1630 | aout_symbol_type *in; | |
1631 | struct external_nlist *ext; | |
1632 | bfd_size_type count; | |
1633 | char *str; | |
1634 | bfd_size_type strsize; | |
1635 | boolean dynamic; | |
1636 | { | |
1637 | struct external_nlist *ext_end; | |
1638 | ||
1639 | ext_end = ext + count; | |
1640 | for (; ext < ext_end; ext++, in++) | |
1641 | { | |
1642 | bfd_vma x; | |
1643 | ||
1644 | x = GET_WORD (abfd, ext->e_strx); | |
1645 | in->symbol.the_bfd = abfd; | |
ca1c6bec ILT |
1646 | |
1647 | /* For the normal symbols, the zero index points at the number | |
1648 | of bytes in the string table but is to be interpreted as the | |
1649 | null string. For the dynamic symbols, the number of bytes in | |
1650 | the string table is stored in the __DYNAMIC structure and the | |
1651 | zero index points at an actual string. */ | |
1652 | if (x == 0 && ! dynamic) | |
1653 | in->symbol.name = ""; | |
1654 | else if (x < strsize) | |
0ee75d02 ILT |
1655 | in->symbol.name = str + x; |
1656 | else | |
1657 | return false; | |
1658 | ||
1659 | in->symbol.value = GET_SWORD (abfd, ext->e_value); | |
1660 | in->desc = bfd_h_get_16 (abfd, ext->e_desc); | |
1661 | in->other = bfd_h_get_8 (abfd, ext->e_other); | |
1662 | in->type = bfd_h_get_8 (abfd, ext->e_type); | |
1663 | in->symbol.udata = 0; | |
1664 | ||
4298e311 | 1665 | if (! translate_from_native_sym_flags (abfd, in)) |
9783e04a | 1666 | return false; |
0ee75d02 ILT |
1667 | |
1668 | if (dynamic) | |
1669 | in->symbol.flags |= BSF_DYNAMIC; | |
1670 | } | |
1671 | ||
1672 | return true; | |
1673 | } | |
1674 | ||
1675 | /* We read the symbols into a buffer, which is discarded when this | |
1676 | function exits. We read the strings into a buffer large enough to | |
1677 | hold them all plus all the cached symbol entries. */ | |
1678 | ||
7ed4093a | 1679 | boolean |
8eb5d4be JK |
1680 | NAME(aout,slurp_symbol_table) (abfd) |
1681 | bfd *abfd; | |
9e2dad8e | 1682 | { |
5c8444f8 | 1683 | struct external_nlist *old_external_syms; |
9e2dad8e | 1684 | aout_symbol_type *cached; |
5c8444f8 | 1685 | size_t cached_size; |
0f213cc2 | 1686 | |
9e2dad8e | 1687 | /* If there's no work to be done, don't do any */ |
5c8444f8 ILT |
1688 | if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL) |
1689 | return true; | |
1690 | ||
1691 | old_external_syms = obj_aout_external_syms (abfd); | |
1692 | ||
1693 | if (! aout_get_external_symbols (abfd)) | |
1694 | return false; | |
1695 | ||
1696 | if (obj_aout_external_sym_count (abfd) == 0) | |
0f213cc2 | 1697 | { |
68241b2b | 1698 | bfd_set_error (bfd_error_no_symbols); |
0f213cc2 KR |
1699 | return false; |
1700 | } | |
1701 | ||
fa77c704 | 1702 | cached_size = (obj_aout_external_sym_count (abfd) |
5c8444f8 ILT |
1703 | * sizeof (aout_symbol_type)); |
1704 | cached = (aout_symbol_type *) malloc (cached_size); | |
5c8444f8 | 1705 | if (cached == NULL) |
9783e04a | 1706 | { |
68241b2b | 1707 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
1708 | return false; |
1709 | } | |
e85e8bfe | 1710 | memset (cached, 0, cached_size); |
5c8444f8 ILT |
1711 | |
1712 | /* Convert from external symbol information to internal. */ | |
fa77c704 ILT |
1713 | if (! (NAME(aout,translate_symbol_table) |
1714 | (abfd, cached, | |
1715 | obj_aout_external_syms (abfd), | |
1716 | obj_aout_external_sym_count (abfd), | |
1717 | obj_aout_external_strings (abfd), | |
1718 | obj_aout_external_string_size (abfd), | |
1719 | false))) | |
0f213cc2 | 1720 | { |
5c8444f8 | 1721 | free (cached); |
0f213cc2 KR |
1722 | return false; |
1723 | } | |
1724 | ||
fa77c704 | 1725 | bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd); |
0f213cc2 | 1726 | |
5c8444f8 | 1727 | obj_aout_symbols (abfd) = cached; |
0f213cc2 | 1728 | |
5c8444f8 ILT |
1729 | /* It is very likely that anybody who calls this function will not |
1730 | want the external symbol information, so if it was allocated | |
1731 | because of our call to aout_get_external_symbols, we free it up | |
1732 | right away to save space. */ | |
1733 | if (old_external_syms == (struct external_nlist *) NULL | |
1734 | && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) | |
1735 | { | |
1736 | free (obj_aout_external_syms (abfd)); | |
1737 | obj_aout_external_syms (abfd) = NULL; | |
0ee75d02 | 1738 | } |
0f213cc2 | 1739 | |
9e2dad8e JG |
1740 | return true; |
1741 | } | |
0f213cc2 | 1742 | \f |
d17fc4c9 ILT |
1743 | /* We use a hash table when writing out symbols so that we only write |
1744 | out a particular string once. This helps particularly when the | |
1745 | linker writes out stabs debugging entries, because each different | |
1746 | contributing object file tends to have many duplicate stabs | |
1747 | strings. | |
1748 | ||
d63d0479 ILT |
1749 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it |
1750 | if BFD_TRADITIONAL_FORMAT is set. */ | |
0f213cc2 | 1751 | |
d17fc4c9 | 1752 | static bfd_size_type add_to_stringtab |
1afd2380 ILT |
1753 | PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean)); |
1754 | static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *)); | |
d17fc4c9 ILT |
1755 | |
1756 | /* Get the index of a string in a strtab, adding it if it is not | |
1afd2380 | 1757 | already present. */ |
d17fc4c9 ILT |
1758 | |
1759 | static INLINE bfd_size_type | |
1760 | add_to_stringtab (abfd, tab, str, copy) | |
0f213cc2 | 1761 | bfd *abfd; |
1afd2380 | 1762 | struct bfd_strtab_hash *tab; |
d17fc4c9 ILT |
1763 | const char *str; |
1764 | boolean copy; | |
0f213cc2 | 1765 | { |
1afd2380 | 1766 | boolean hash; |
0f213cc2 | 1767 | |
d17fc4c9 ILT |
1768 | /* An index of 0 always means the empty string. */ |
1769 | if (*str == '\0') | |
1770 | return 0; | |
0f213cc2 | 1771 | |
1afd2380 ILT |
1772 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx |
1773 | doesn't understand a hashed string table. */ | |
1774 | hash = true; | |
1775 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
1776 | hash = false; | |
0f213cc2 | 1777 | |
1afd2380 ILT |
1778 | /* Add BYTES_IN_WORD to the return value to account for the space |
1779 | taken up by the count. */ | |
1780 | return BYTES_IN_WORD + _bfd_stringtab_add (tab, str, hash, copy); | |
0f213cc2 KR |
1781 | } |
1782 | ||
d17fc4c9 ILT |
1783 | /* Write out a strtab. ABFD is already at the right location in the |
1784 | file. */ | |
1785 | ||
29e626eb | 1786 | static boolean |
d17fc4c9 ILT |
1787 | emit_stringtab (abfd, tab) |
1788 | register bfd *abfd; | |
1afd2380 | 1789 | struct bfd_strtab_hash *tab; |
0f213cc2 | 1790 | { |
d17fc4c9 | 1791 | bfd_byte buffer[BYTES_IN_WORD]; |
0f213cc2 | 1792 | |
1afd2380 ILT |
1793 | /* The string table starts with the size. */ |
1794 | PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer); | |
29e626eb ILT |
1795 | if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD) |
1796 | return false; | |
0f213cc2 | 1797 | |
1afd2380 | 1798 | return _bfd_stringtab_emit (abfd, tab); |
0f213cc2 | 1799 | } |
d17fc4c9 | 1800 | \f |
4c3721d5 | 1801 | boolean |
8eb5d4be JK |
1802 | NAME(aout,write_syms) (abfd) |
1803 | bfd *abfd; | |
0f213cc2 KR |
1804 | { |
1805 | unsigned int count ; | |
1806 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1afd2380 | 1807 | struct bfd_strtab_hash *strtab; |
0f213cc2 | 1808 | |
1afd2380 ILT |
1809 | strtab = _bfd_stringtab_init (); |
1810 | if (strtab == NULL) | |
d17fc4c9 | 1811 | return false; |
0f213cc2 KR |
1812 | |
1813 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1814 | { | |
7ed4093a | 1815 | asymbol *g = generic[count]; |
d17fc4c9 | 1816 | bfd_size_type indx; |
7ed4093a | 1817 | struct external_nlist nsp; |
6db82ea7 | 1818 | |
1afd2380 | 1819 | indx = add_to_stringtab (abfd, strtab, g->name, false); |
d17fc4c9 ILT |
1820 | if (indx == (bfd_size_type) -1) |
1821 | goto error_return; | |
1822 | PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx); | |
6db82ea7 | 1823 | |
0f213cc2 KR |
1824 | if (bfd_asymbol_flavour(g) == abfd->xvec->flavour) |
1825 | { | |
1826 | bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc); | |
1827 | bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other); | |
1828 | bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type); | |
1829 | } | |
7ed4093a | 1830 | else |
0f213cc2 KR |
1831 | { |
1832 | bfd_h_put_16(abfd,0, nsp.e_desc); | |
1833 | bfd_h_put_8(abfd, 0, nsp.e_other); | |
1834 | bfd_h_put_8(abfd, 0, nsp.e_type); | |
1835 | } | |
7b02b4ed | 1836 | |
4298e311 | 1837 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) |
d17fc4c9 | 1838 | goto error_return; |
7b02b4ed | 1839 | |
4c3721d5 ILT |
1840 | if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd) |
1841 | != EXTERNAL_NLIST_SIZE) | |
d17fc4c9 | 1842 | goto error_return; |
7ed4093a | 1843 | |
0f213cc2 KR |
1844 | /* NB: `KEEPIT' currently overlays `flags', so set this only |
1845 | here, at the end. */ | |
1846 | g->KEEPIT = count; | |
1847 | } | |
7ed4093a | 1848 | |
1afd2380 | 1849 | if (! emit_stringtab (abfd, strtab)) |
d17fc4c9 ILT |
1850 | goto error_return; |
1851 | ||
1afd2380 | 1852 | _bfd_stringtab_free (strtab); |
d17fc4c9 ILT |
1853 | |
1854 | return true; | |
1855 | ||
1856 | error_return: | |
1afd2380 | 1857 | _bfd_stringtab_free (strtab); |
d17fc4c9 | 1858 | return false; |
0f213cc2 | 1859 | } |
7ed4093a | 1860 | |
0f213cc2 | 1861 | \f |
326e32d7 | 1862 | long |
8eb5d4be JK |
1863 | NAME(aout,get_symtab) (abfd, location) |
1864 | bfd *abfd; | |
1865 | asymbol **location; | |
3f7607af | 1866 | { |
7ed4093a SC |
1867 | unsigned int counter = 0; |
1868 | aout_symbol_type *symbase; | |
ce07dd7c | 1869 | |
326e32d7 ILT |
1870 | if (!NAME(aout,slurp_symbol_table)(abfd)) |
1871 | return -1; | |
ce07dd7c | 1872 | |
7ed4093a SC |
1873 | for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);) |
1874 | *(location++) = (asymbol *)( symbase++); | |
1875 | *location++ =0; | |
ce07dd7c | 1876 | return bfd_get_symcount (abfd); |
3f7607af | 1877 | } |
7ed4093a SC |
1878 | |
1879 | \f | |
1880 | /* Standard reloc stuff */ | |
1881 | /* Output standard relocation information to a file in target byte order. */ | |
1882 | ||
1883 | void | |
8eb5d4be JK |
1884 | NAME(aout,swap_std_reloc_out) (abfd, g, natptr) |
1885 | bfd *abfd; | |
1886 | arelent *g; | |
1887 | struct reloc_std_external *natptr; | |
3f7607af | 1888 | { |
6db82ea7 SC |
1889 | int r_index; |
1890 | asymbol *sym = *(g->sym_ptr_ptr); | |
1891 | int r_extern; | |
1892 | unsigned int r_length; | |
1893 | int r_pcrel; | |
1894 | int r_baserel, r_jmptable, r_relative; | |
6db82ea7 | 1895 | asection *output_section = sym->section->output_section; |
ce07dd7c | 1896 | |
6db82ea7 | 1897 | PUT_WORD(abfd, g->address, natptr->r_address); |
ce07dd7c | 1898 | |
6db82ea7 SC |
1899 | r_length = g->howto->size ; /* Size as a power of two */ |
1900 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
c188b0be DM |
1901 | /* XXX This relies on relocs coming from a.out files. */ |
1902 | r_baserel = (g->howto->type & 8) != 0; | |
cb9461ff JK |
1903 | r_jmptable = (g->howto->type & 16) != 0; |
1904 | r_relative = (g->howto->type & 32) != 0; | |
c188b0be | 1905 | |
728472f1 ILT |
1906 | #if 0 |
1907 | /* For a standard reloc, the addend is in the object file. */ | |
6db82ea7 | 1908 | r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; |
728472f1 | 1909 | #endif |
c188b0be | 1910 | |
6db82ea7 SC |
1911 | /* name was clobbered by aout_write_syms to be symbol index */ |
1912 | ||
c188b0be | 1913 | /* If this relocation is relative to a symbol then set the |
2768b3f7 SC |
1914 | r_index to the symbols index, and the r_extern bit. |
1915 | ||
1916 | Absolute symbols can come in in two ways, either as an offset | |
1917 | from the abs section, or as a symbol which has an abs value. | |
1918 | check for that here | |
1919 | */ | |
c188b0be | 1920 | |
2768b3f7 | 1921 | |
382f2a3d | 1922 | if (bfd_is_com_section (output_section) |
4587b578 ILT |
1923 | || bfd_is_abs_section (output_section) |
1924 | || bfd_is_und_section (output_section)) | |
ce07dd7c | 1925 | { |
4587b578 | 1926 | if (bfd_abs_section_ptr->symbol == sym) |
2768b3f7 SC |
1927 | { |
1928 | /* Whoops, looked like an abs symbol, but is really an offset | |
1929 | from the abs section */ | |
1930 | r_index = 0; | |
1931 | r_extern = 0; | |
1932 | } | |
c188b0be | 1933 | else |
2768b3f7 SC |
1934 | { |
1935 | /* Fill in symbol */ | |
1936 | r_extern = 1; | |
1937 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); | |
c188b0be | 1938 | |
2768b3f7 | 1939 | } |
ce07dd7c | 1940 | } |
c188b0be | 1941 | else |
ce07dd7c KR |
1942 | { |
1943 | /* Just an ordinary section */ | |
1944 | r_extern = 0; | |
c188b0be | 1945 | r_index = output_section->target_index; |
ce07dd7c KR |
1946 | } |
1947 | ||
6db82ea7 SC |
1948 | /* now the fun stuff */ |
1949 | if (abfd->xvec->header_byteorder_big_p != false) { | |
7ed4093a SC |
1950 | natptr->r_index[0] = r_index >> 16; |
1951 | natptr->r_index[1] = r_index >> 8; | |
1952 | natptr->r_index[2] = r_index; | |
1953 | natptr->r_type[0] = | |
6db82ea7 SC |
1954 | (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0) |
1955 | | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0) | |
1956 | | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0) | |
1957 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0) | |
1958 | | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0) | |
1959 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG); | |
7ed4093a | 1960 | } else { |
6db82ea7 SC |
1961 | natptr->r_index[2] = r_index >> 16; |
1962 | natptr->r_index[1] = r_index >> 8; | |
1963 | natptr->r_index[0] = r_index; | |
1964 | natptr->r_type[0] = | |
1965 | (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0) | |
7ed4093a | 1966 | | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0) |
6db82ea7 SC |
1967 | | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0) |
1968 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0) | |
1969 | | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0) | |
1970 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
1971 | } | |
3f7607af | 1972 | } |
7ed4093a SC |
1973 | |
1974 | ||
1975 | /* Extended stuff */ | |
1976 | /* Output extended relocation information to a file in target byte order. */ | |
1977 | ||
1978 | void | |
8eb5d4be JK |
1979 | NAME(aout,swap_ext_reloc_out) (abfd, g, natptr) |
1980 | bfd *abfd; | |
1981 | arelent *g; | |
1982 | register struct reloc_ext_external *natptr; | |
3f7607af | 1983 | { |
6db82ea7 SC |
1984 | int r_index; |
1985 | int r_extern; | |
1986 | unsigned int r_type; | |
1987 | unsigned int r_addend; | |
c188b0be | 1988 | asymbol *sym = *(g->sym_ptr_ptr); |
6db82ea7 | 1989 | asection *output_section = sym->section->output_section; |
c188b0be | 1990 | |
6db82ea7 | 1991 | PUT_WORD (abfd, g->address, natptr->r_address); |
c188b0be | 1992 | |
6db82ea7 | 1993 | r_type = (unsigned int) g->howto->type; |
7ed4093a | 1994 | |
c188b0be | 1995 | r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; |
7ed4093a | 1996 | |
c188b0be | 1997 | /* If this relocation is relative to a symbol then set the |
2768b3f7 SC |
1998 | r_index to the symbols index, and the r_extern bit. |
1999 | ||
2000 | Absolute symbols can come in in two ways, either as an offset | |
2001 | from the abs section, or as a symbol which has an abs value. | |
c188b0be DM |
2002 | check for that here. */ |
2003 | ||
382f2a3d | 2004 | if (bfd_is_com_section (output_section) |
4587b578 ILT |
2005 | || bfd_is_abs_section (output_section) |
2006 | || bfd_is_und_section (output_section)) | |
6db82ea7 | 2007 | { |
4587b578 | 2008 | if (bfd_abs_section_ptr->symbol == sym) |
2768b3f7 SC |
2009 | { |
2010 | /* Whoops, looked like an abs symbol, but is really an offset | |
2011 | from the abs section */ | |
2012 | r_index = 0; | |
2013 | r_extern = 0; | |
2014 | } | |
c188b0be | 2015 | else |
2768b3f7 SC |
2016 | { |
2017 | r_extern = 1; | |
2018 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); | |
2019 | } | |
6db82ea7 | 2020 | } |
c188b0be | 2021 | else |
6db82ea7 SC |
2022 | { |
2023 | /* Just an ordinary section */ | |
2024 | r_extern = 0; | |
c188b0be | 2025 | r_index = output_section->target_index; |
6db82ea7 | 2026 | } |
c188b0be | 2027 | |
7ed4093a SC |
2028 | /* now the fun stuff */ |
2029 | if (abfd->xvec->header_byteorder_big_p != false) { | |
2768b3f7 SC |
2030 | natptr->r_index[0] = r_index >> 16; |
2031 | natptr->r_index[1] = r_index >> 8; | |
2032 | natptr->r_index[2] = r_index; | |
2033 | natptr->r_type[0] = | |
c188b0be DM |
2034 | ((r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0) |
2035 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
2768b3f7 SC |
2036 | } else { |
2037 | natptr->r_index[2] = r_index >> 16; | |
2038 | natptr->r_index[1] = r_index >> 8; | |
2039 | natptr->r_index[0] = r_index; | |
2040 | natptr->r_type[0] = | |
2041 | (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0) | |
2042 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
2043 | } | |
7ed4093a SC |
2044 | |
2045 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
2046 | } | |
2047 | ||
6db82ea7 SC |
2048 | /* BFD deals internally with all things based from the section they're |
2049 | in. so, something in 10 bytes into a text section with a base of | |
c188b0be | 2050 | 50 would have a symbol (.text+10) and know .text vma was 50. |
6db82ea7 SC |
2051 | |
2052 | Aout keeps all it's symbols based from zero, so the symbol would | |
2053 | contain 60. This macro subs the base of each section from the value | |
2054 | to give the true offset from the section */ | |
2055 | ||
2056 | ||
7ed4093a SC |
2057 | #define MOVE_ADDRESS(ad) \ |
2058 | if (r_extern) { \ | |
6db82ea7 SC |
2059 | /* undefined symbol */ \ |
2060 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
2061 | cache_ptr->addend = ad; \ | |
2062 | } else { \ | |
2063 | /* defined, section relative. replace symbol with pointer to \ | |
2064 | symbol which points to section */ \ | |
7ed4093a SC |
2065 | switch (r_index) { \ |
2066 | case N_TEXT: \ | |
2067 | case N_TEXT | N_EXT: \ | |
6db82ea7 | 2068 | cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
2069 | cache_ptr->addend = ad - su->textsec->vma; \ |
2070 | break; \ | |
2071 | case N_DATA: \ | |
2072 | case N_DATA | N_EXT: \ | |
6db82ea7 | 2073 | cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
2074 | cache_ptr->addend = ad - su->datasec->vma; \ |
2075 | break; \ | |
2076 | case N_BSS: \ | |
2077 | case N_BSS | N_EXT: \ | |
6db82ea7 | 2078 | cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
2079 | cache_ptr->addend = ad - su->bsssec->vma; \ |
2080 | break; \ | |
6db82ea7 | 2081 | default: \ |
7ed4093a SC |
2082 | case N_ABS: \ |
2083 | case N_ABS | N_EXT: \ | |
4587b578 | 2084 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ |
6db82ea7 | 2085 | cache_ptr->addend = ad; \ |
7ed4093a SC |
2086 | break; \ |
2087 | } \ | |
2088 | } \ | |
2089 | ||
2090 | void | |
8eb5d4be JK |
2091 | NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols) |
2092 | bfd *abfd; | |
2093 | struct reloc_ext_external *bytes; | |
2094 | arelent *cache_ptr; | |
2095 | asymbol **symbols; | |
7ed4093a SC |
2096 | { |
2097 | int r_index; | |
2098 | int r_extern; | |
2099 | unsigned int r_type; | |
6db82ea7 | 2100 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
7ed4093a SC |
2101 | |
2102 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
2103 | ||
2104 | /* now the fun stuff */ | |
2105 | if (abfd->xvec->header_byteorder_big_p != false) { | |
382f2a3d ILT |
2106 | r_index = (bytes->r_index[0] << 16) |
2107 | | (bytes->r_index[1] << 8) | |
2108 | | bytes->r_index[2]; | |
7ed4093a SC |
2109 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); |
2110 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
2111 | >> RELOC_EXT_BITS_TYPE_SH_BIG; | |
2112 | } else { | |
382f2a3d ILT |
2113 | r_index = (bytes->r_index[2] << 16) |
2114 | | (bytes->r_index[1] << 8) | |
2115 | | bytes->r_index[0]; | |
7ed4093a SC |
2116 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); |
2117 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
2118 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE; | |
2119 | } | |
2120 | ||
2121 | cache_ptr->howto = howto_table_ext + r_type; | |
6db82ea7 | 2122 | MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend)); |
7ed4093a SC |
2123 | } |
2124 | ||
2125 | void | |
8eb5d4be JK |
2126 | NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols) |
2127 | bfd *abfd; | |
2128 | struct reloc_std_external *bytes; | |
2129 | arelent *cache_ptr; | |
2130 | asymbol **symbols; | |
7ed4093a SC |
2131 | { |
2132 | int r_index; | |
2133 | int r_extern; | |
2134 | unsigned int r_length; | |
2135 | int r_pcrel; | |
2136 | int r_baserel, r_jmptable, r_relative; | |
6db82ea7 | 2137 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
c188b0be | 2138 | int howto_idx; |
7ed4093a | 2139 | |
34dd8ba3 | 2140 | cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address); |
7ed4093a SC |
2141 | |
2142 | /* now the fun stuff */ | |
2143 | if (abfd->xvec->header_byteorder_big_p != false) { | |
382f2a3d ILT |
2144 | r_index = (bytes->r_index[0] << 16) |
2145 | | (bytes->r_index[1] << 8) | |
2146 | | bytes->r_index[2]; | |
7ed4093a SC |
2147 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); |
2148 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
2149 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
2150 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
2151 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
c188b0be | 2152 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) |
7ed4093a SC |
2153 | >> RELOC_STD_BITS_LENGTH_SH_BIG; |
2154 | } else { | |
382f2a3d ILT |
2155 | r_index = (bytes->r_index[2] << 16) |
2156 | | (bytes->r_index[1] << 8) | |
2157 | | bytes->r_index[0]; | |
7ed4093a SC |
2158 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); |
2159 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
2160 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
2161 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
2162 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
c188b0be | 2163 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) |
7ed4093a SC |
2164 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE; |
2165 | } | |
2166 | ||
cb9461ff JK |
2167 | howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel |
2168 | + 16 * r_jmptable + 32 * r_relative; | |
c188b0be DM |
2169 | BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std)); |
2170 | cache_ptr->howto = howto_table_std + howto_idx; | |
2171 | BFD_ASSERT (cache_ptr->howto->type != -1); | |
7ed4093a SC |
2172 | |
2173 | MOVE_ADDRESS(0); | |
2174 | } | |
2175 | ||
5c8444f8 | 2176 | /* Read and swap the relocs for a section. */ |
7ed4093a SC |
2177 | |
2178 | boolean | |
8eb5d4be JK |
2179 | NAME(aout,slurp_reloc_table) (abfd, asect, symbols) |
2180 | bfd *abfd; | |
2181 | sec_ptr asect; | |
2182 | asymbol **symbols; | |
7ed4093a SC |
2183 | { |
2184 | unsigned int count; | |
2185 | bfd_size_type reloc_size; | |
2186 | PTR relocs; | |
2187 | arelent *reloc_cache; | |
2188 | size_t each_size; | |
0ee75d02 ILT |
2189 | unsigned int counter = 0; |
2190 | arelent *cache_ptr; | |
7ed4093a | 2191 | |
5c8444f8 ILT |
2192 | if (asect->relocation) |
2193 | return true; | |
7ed4093a | 2194 | |
5c8444f8 ILT |
2195 | if (asect->flags & SEC_CONSTRUCTOR) |
2196 | return true; | |
7ed4093a | 2197 | |
0ee75d02 | 2198 | if (asect == obj_datasec (abfd)) |
7ed4093a | 2199 | reloc_size = exec_hdr(abfd)->a_drsize; |
0ee75d02 | 2200 | else if (asect == obj_textsec (abfd)) |
7ed4093a | 2201 | reloc_size = exec_hdr(abfd)->a_trsize; |
f42fe159 ILT |
2202 | else if (asect == obj_bsssec (abfd)) |
2203 | reloc_size = 0; | |
0ee75d02 ILT |
2204 | else |
2205 | { | |
68241b2b | 2206 | bfd_set_error (bfd_error_invalid_operation); |
0ee75d02 ILT |
2207 | return false; |
2208 | } | |
2209 | ||
5c8444f8 ILT |
2210 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) |
2211 | return false; | |
2212 | ||
7ed4093a SC |
2213 | each_size = obj_reloc_entry_size (abfd); |
2214 | ||
2215 | count = reloc_size / each_size; | |
2216 | ||
fa77c704 | 2217 | reloc_cache = (arelent *) malloc ((size_t) (count * sizeof (arelent))); |
5c8444f8 | 2218 | if (reloc_cache == NULL && count != 0) |
0ee75d02 | 2219 | { |
68241b2b | 2220 | bfd_set_error (bfd_error_no_memory); |
0ee75d02 ILT |
2221 | return false; |
2222 | } | |
fa77c704 | 2223 | memset (reloc_cache, 0, count * sizeof (arelent)); |
7ed4093a | 2224 | |
5c8444f8 ILT |
2225 | relocs = malloc (reloc_size); |
2226 | if (relocs == NULL && reloc_size != 0) | |
0ee75d02 | 2227 | { |
5c8444f8 ILT |
2228 | free (reloc_cache); |
2229 | bfd_set_error (bfd_error_no_memory); | |
2230 | return false; | |
0ee75d02 | 2231 | } |
7ed4093a | 2232 | |
0ee75d02 ILT |
2233 | if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) |
2234 | { | |
5c8444f8 ILT |
2235 | free (relocs); |
2236 | free (reloc_cache); | |
0ee75d02 ILT |
2237 | return false; |
2238 | } | |
7ed4093a | 2239 | |
0ee75d02 ILT |
2240 | cache_ptr = reloc_cache; |
2241 | if (each_size == RELOC_EXT_SIZE) | |
2242 | { | |
2243 | register struct reloc_ext_external *rptr = | |
2244 | (struct reloc_ext_external *) relocs; | |
7ed4093a | 2245 | |
0ee75d02 ILT |
2246 | for (; counter < count; counter++, rptr++, cache_ptr++) |
2247 | NAME(aout,swap_ext_reloc_in) (abfd, rptr, cache_ptr, symbols); | |
7ed4093a | 2248 | } |
0ee75d02 ILT |
2249 | else |
2250 | { | |
5c8444f8 ILT |
2251 | register struct reloc_std_external *rptr = |
2252 | (struct reloc_std_external *) relocs; | |
7ed4093a | 2253 | |
0ee75d02 | 2254 | for (; counter < count; counter++, rptr++, cache_ptr++) |
f42fe159 | 2255 | MY_swap_std_reloc_in(abfd, rptr, cache_ptr, symbols); |
7ed4093a SC |
2256 | } |
2257 | ||
5c8444f8 ILT |
2258 | free (relocs); |
2259 | ||
7ed4093a | 2260 | asect->relocation = reloc_cache; |
0ee75d02 | 2261 | asect->reloc_count = cache_ptr - reloc_cache; |
5c8444f8 | 2262 | |
7ed4093a SC |
2263 | return true; |
2264 | } | |
2265 | ||
7ed4093a SC |
2266 | /* Write out a relocation section into an object file. */ |
2267 | ||
2268 | boolean | |
8eb5d4be JK |
2269 | NAME(aout,squirt_out_relocs) (abfd, section) |
2270 | bfd *abfd; | |
2271 | asection *section; | |
7ed4093a SC |
2272 | { |
2273 | arelent **generic; | |
2274 | unsigned char *native, *natptr; | |
2275 | size_t each_size; | |
2276 | ||
2277 | unsigned int count = section->reloc_count; | |
2278 | size_t natsize; | |
2279 | ||
2280 | if (count == 0) return true; | |
2281 | ||
2282 | each_size = obj_reloc_entry_size (abfd); | |
2283 | natsize = each_size * count; | |
2284 | native = (unsigned char *) bfd_zalloc (abfd, natsize); | |
2285 | if (!native) { | |
68241b2b | 2286 | bfd_set_error (bfd_error_no_memory); |
7ed4093a SC |
2287 | return false; |
2288 | } | |
2289 | ||
2290 | generic = section->orelocation; | |
2291 | ||
c188b0be | 2292 | if (each_size == RELOC_EXT_SIZE) |
7ed4093a SC |
2293 | { |
2294 | for (natptr = native; | |
2295 | count != 0; | |
2296 | --count, natptr += each_size, ++generic) | |
2297 | NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr); | |
2298 | } | |
c188b0be | 2299 | else |
7ed4093a SC |
2300 | { |
2301 | for (natptr = native; | |
2302 | count != 0; | |
2303 | --count, natptr += each_size, ++generic) | |
f42fe159 | 2304 | MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr); |
7ed4093a SC |
2305 | } |
2306 | ||
2307 | if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) { | |
2308 | bfd_release(abfd, native); | |
2309 | return false; | |
2310 | } | |
2311 | bfd_release (abfd, native); | |
2312 | ||
2313 | return true; | |
2314 | } | |
2315 | ||
2316 | /* This is stupid. This function should be a boolean predicate */ | |
326e32d7 | 2317 | long |
8eb5d4be JK |
2318 | NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols) |
2319 | bfd *abfd; | |
2320 | sec_ptr section; | |
2321 | arelent **relptr; | |
2322 | asymbol **symbols; | |
7ed4093a SC |
2323 | { |
2324 | arelent *tblptr = section->relocation; | |
2325 | unsigned int count; | |
2326 | ||
4f019d04 ILT |
2327 | if (section == obj_bsssec (abfd)) |
2328 | { | |
2329 | *relptr = NULL; | |
2330 | return 0; | |
2331 | } | |
2332 | ||
7ed4093a | 2333 | if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols))) |
326e32d7 | 2334 | return -1; |
7ed4093a SC |
2335 | |
2336 | if (section->flags & SEC_CONSTRUCTOR) { | |
2337 | arelent_chain *chain = section->constructor_chain; | |
2338 | for (count = 0; count < section->reloc_count; count ++) { | |
2339 | *relptr ++ = &chain->relent; | |
2340 | chain = chain->next; | |
2341 | } | |
2342 | } | |
2343 | else { | |
2344 | tblptr = section->relocation; | |
7ed4093a | 2345 | |
c188b0be | 2346 | for (count = 0; count++ < section->reloc_count;) |
7ed4093a SC |
2347 | { |
2348 | *relptr++ = tblptr++; | |
2349 | } | |
2350 | } | |
2351 | *relptr = 0; | |
2352 | ||
2353 | return section->reloc_count; | |
2354 | } | |
2355 | ||
326e32d7 | 2356 | long |
8eb5d4be JK |
2357 | NAME(aout,get_reloc_upper_bound) (abfd, asect) |
2358 | bfd *abfd; | |
2359 | sec_ptr asect; | |
7ed4093a SC |
2360 | { |
2361 | if (bfd_get_format (abfd) != bfd_object) { | |
68241b2b | 2362 | bfd_set_error (bfd_error_invalid_operation); |
326e32d7 | 2363 | return -1; |
7ed4093a SC |
2364 | } |
2365 | if (asect->flags & SEC_CONSTRUCTOR) { | |
2366 | return (sizeof (arelent *) * (asect->reloc_count+1)); | |
2367 | } | |
2368 | ||
7ed4093a | 2369 | if (asect == obj_datasec (abfd)) |
fa77c704 ILT |
2370 | return (sizeof (arelent *) |
2371 | * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd)) | |
2372 | + 1)); | |
7ed4093a SC |
2373 | |
2374 | if (asect == obj_textsec (abfd)) | |
fa77c704 ILT |
2375 | return (sizeof (arelent *) |
2376 | * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd)) | |
2377 | + 1)); | |
7ed4093a | 2378 | |
4f019d04 ILT |
2379 | if (asect == obj_bsssec (abfd)) |
2380 | return sizeof (arelent *); | |
2381 | ||
f42fe159 ILT |
2382 | if (asect == obj_bsssec (abfd)) |
2383 | return 0; | |
2384 | ||
68241b2b | 2385 | bfd_set_error (bfd_error_invalid_operation); |
326e32d7 | 2386 | return -1; |
7ed4093a SC |
2387 | } |
2388 | ||
2389 | \f | |
326e32d7 | 2390 | long |
8eb5d4be JK |
2391 | NAME(aout,get_symtab_upper_bound) (abfd) |
2392 | bfd *abfd; | |
7ed4093a | 2393 | { |
326e32d7 ILT |
2394 | if (!NAME(aout,slurp_symbol_table)(abfd)) |
2395 | return -1; | |
7ed4093a SC |
2396 | |
2397 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
2398 | } | |
728472f1 ILT |
2399 | |
2400 | /*ARGSUSED*/ | |
7ed4093a | 2401 | alent * |
8eb5d4be JK |
2402 | NAME(aout,get_lineno) (ignore_abfd, ignore_symbol) |
2403 | bfd *ignore_abfd; | |
2404 | asymbol *ignore_symbol; | |
7ed4093a SC |
2405 | { |
2406 | return (alent *)NULL; | |
2407 | } | |
2408 | ||
728472f1 | 2409 | /*ARGSUSED*/ |
c188b0be | 2410 | void |
8eb5d4be JK |
2411 | NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret) |
2412 | bfd *ignore_abfd; | |
2413 | asymbol *symbol; | |
2414 | symbol_info *ret; | |
34dd8ba3 JG |
2415 | { |
2416 | bfd_symbol_info (symbol, ret); | |
2417 | ||
2418 | if (ret->type == '?') | |
2419 | { | |
2420 | int type_code = aout_symbol(symbol)->type & 0xff; | |
2421 | CONST char *stab_name = aout_stab_name(type_code); | |
2422 | static char buf[10]; | |
2423 | ||
2424 | if (stab_name == NULL) | |
2425 | { | |
2426 | sprintf(buf, "(%d)", type_code); | |
2427 | stab_name = buf; | |
2428 | } | |
2429 | ret->type = '-'; | |
2430 | ret->stab_other = (unsigned)(aout_symbol(symbol)->other & 0xff); | |
2431 | ret->stab_desc = (unsigned)(aout_symbol(symbol)->desc & 0xffff); | |
2432 | ret->stab_name = stab_name; | |
2433 | } | |
2434 | } | |
7ed4093a | 2435 | |
728472f1 | 2436 | /*ARGSUSED*/ |
c188b0be | 2437 | void |
8eb5d4be JK |
2438 | NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how) |
2439 | bfd *ignore_abfd; | |
2440 | PTR afile; | |
2441 | asymbol *symbol; | |
2442 | bfd_print_symbol_type how; | |
7ed4093a SC |
2443 | { |
2444 | FILE *file = (FILE *)afile; | |
2445 | ||
2446 | switch (how) { | |
9e2dad8e | 2447 | case bfd_print_symbol_name: |
fb3be09b JG |
2448 | if (symbol->name) |
2449 | fprintf(file,"%s", symbol->name); | |
7ed4093a | 2450 | break; |
9e2dad8e | 2451 | case bfd_print_symbol_more: |
7ed4093a SC |
2452 | fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff), |
2453 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
2454 | (unsigned)(aout_symbol(symbol)->type)); | |
2455 | break; | |
9e2dad8e | 2456 | case bfd_print_symbol_all: |
7ed4093a | 2457 | { |
6db82ea7 SC |
2458 | CONST char *section_name = symbol->section->name; |
2459 | ||
7ed4093a SC |
2460 | |
2461 | bfd_print_symbol_vandf((PTR)file,symbol); | |
2462 | ||
fb3be09b | 2463 | fprintf(file," %-5s %04x %02x %02x", |
7ed4093a SC |
2464 | section_name, |
2465 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
2466 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
9e2dad8e | 2467 | (unsigned)(aout_symbol(symbol)->type & 0xff)); |
fb3be09b JG |
2468 | if (symbol->name) |
2469 | fprintf(file," %s", symbol->name); | |
7ed4093a SC |
2470 | } |
2471 | break; | |
2472 | } | |
2473 | } | |
2474 | ||
c188b0be | 2475 | /* |
6724ff46 | 2476 | provided a BFD, a section and an offset into the section, calculate |
7ed4093a SC |
2477 | and return the name of the source file and the line nearest to the |
2478 | wanted location. | |
2479 | */ | |
c188b0be | 2480 | |
7ed4093a | 2481 | boolean |
8eb5d4be JK |
2482 | NAME(aout,find_nearest_line) |
2483 | (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr) | |
2484 | bfd *abfd; | |
2485 | asection *section; | |
2486 | asymbol **symbols; | |
2487 | bfd_vma offset; | |
2488 | CONST char **filename_ptr; | |
2489 | CONST char **functionname_ptr; | |
2490 | unsigned int *line_ptr; | |
7ed4093a SC |
2491 | { |
2492 | /* Run down the file looking for the filename, function and linenumber */ | |
2493 | asymbol **p; | |
2494 | static char buffer[100]; | |
98d43107 | 2495 | static char filename_buffer[200]; |
6db82ea7 SC |
2496 | CONST char *directory_name = NULL; |
2497 | CONST char *main_file_name = NULL; | |
2498 | CONST char *current_file_name = NULL; | |
2499 | CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */ | |
7ed4093a SC |
2500 | bfd_vma high_line_vma = ~0; |
2501 | bfd_vma low_func_vma = 0; | |
2502 | asymbol *func = 0; | |
2503 | *filename_ptr = abfd->filename; | |
2504 | *functionname_ptr = 0; | |
2505 | *line_ptr = 0; | |
2506 | if (symbols != (asymbol **)NULL) { | |
2507 | for (p = symbols; *p; p++) { | |
2508 | aout_symbol_type *q = (aout_symbol_type *)(*p); | |
98d43107 | 2509 | next: |
7ed4093a SC |
2510 | switch (q->type){ |
2511 | case N_SO: | |
3f7607af | 2512 | main_file_name = current_file_name = q->symbol.name; |
98d43107 JG |
2513 | /* Look ahead to next symbol to check if that too is an N_SO. */ |
2514 | p++; | |
2515 | if (*p == NULL) | |
2516 | break; | |
2517 | q = (aout_symbol_type *)(*p); | |
6db82ea7 | 2518 | if (q->type != (int)N_SO) |
98d43107 JG |
2519 | goto next; |
2520 | ||
2521 | /* Found a second N_SO First is directory; second is filename. */ | |
3f7607af PB |
2522 | directory_name = current_file_name; |
2523 | main_file_name = current_file_name = q->symbol.name; | |
2524 | if (obj_textsec(abfd) != section) | |
2525 | goto done; | |
2526 | break; | |
2527 | case N_SOL: | |
2528 | current_file_name = q->symbol.name; | |
7ed4093a | 2529 | break; |
3f7607af | 2530 | |
7ed4093a SC |
2531 | case N_SLINE: |
2532 | ||
2533 | case N_DSLINE: | |
2534 | case N_BSLINE: | |
2535 | /* We'll keep this if it resolves nearer than the one we have already */ | |
2536 | if (q->symbol.value >= offset && | |
2537 | q->symbol.value < high_line_vma) { | |
2538 | *line_ptr = q->desc; | |
2539 | high_line_vma = q->symbol.value; | |
3f7607af | 2540 | line_file_name = current_file_name; |
7ed4093a SC |
2541 | } |
2542 | break; | |
2543 | case N_FUN: | |
2544 | { | |
2545 | /* We'll keep this if it is nearer than the one we have already */ | |
2546 | if (q->symbol.value >= low_func_vma && | |
2547 | q->symbol.value <= offset) { | |
2548 | low_func_vma = q->symbol.value; | |
2549 | func = (asymbol *)q; | |
2550 | } | |
2551 | if (*line_ptr && func) { | |
2552 | CONST char *function = func->name; | |
2553 | char *p; | |
ec099b4b | 2554 | |
91f300d6 | 2555 | /* The caller expects a symbol name. We actually have a |
ec099b4b ILT |
2556 | function name, without the leading underscore. Put the |
2557 | underscore back in, so that the caller gets a symbol | |
2558 | name. */ | |
2559 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
2560 | strncpy (buffer, function, sizeof (buffer) - 1); | |
2561 | else | |
2562 | { | |
2563 | buffer[0] = bfd_get_symbol_leading_char (abfd); | |
2564 | strncpy (buffer + 1, function, sizeof (buffer) - 2); | |
2565 | } | |
7ed4093a SC |
2566 | buffer[sizeof(buffer)-1] = 0; |
2567 | /* Have to remove : stuff */ | |
2568 | p = strchr(buffer,':'); | |
7b02b4ed | 2569 | if (p != NULL) { *p = '\0'; } |
7ed4093a | 2570 | *functionname_ptr = buffer; |
3f7607af | 2571 | goto done; |
7ed4093a SC |
2572 | |
2573 | } | |
2574 | } | |
2575 | break; | |
2576 | } | |
2577 | } | |
2578 | } | |
3f7607af PB |
2579 | |
2580 | done: | |
2581 | if (*line_ptr) | |
2582 | main_file_name = line_file_name; | |
2583 | if (main_file_name) { | |
2584 | if (main_file_name[0] == '/' || directory_name == NULL) | |
2585 | *filename_ptr = main_file_name; | |
2586 | else { | |
2587 | sprintf(filename_buffer, "%.140s%.50s", | |
2588 | directory_name, main_file_name); | |
2589 | *filename_ptr = filename_buffer; | |
2590 | } | |
2591 | } | |
7ed4093a SC |
2592 | return true; |
2593 | ||
2594 | } | |
2595 | ||
728472f1 | 2596 | /*ARGSUSED*/ |
c188b0be | 2597 | int |
8eb5d4be JK |
2598 | NAME(aout,sizeof_headers) (abfd, execable) |
2599 | bfd *abfd; | |
2600 | boolean execable; | |
7ed4093a | 2601 | { |
6db82ea7 | 2602 | return adata(abfd).exec_bytes_size; |
7ed4093a | 2603 | } |
5c8444f8 ILT |
2604 | |
2605 | /* Free all information we have cached for this BFD. We can always | |
2606 | read it again later if we need it. */ | |
2607 | ||
2608 | boolean | |
2609 | NAME(aout,bfd_free_cached_info) (abfd) | |
2610 | bfd *abfd; | |
2611 | { | |
2612 | asection *o; | |
2613 | ||
c4dd531f ILT |
2614 | if (bfd_get_format (abfd) != bfd_object) |
2615 | return true; | |
2616 | ||
4852416e DHW |
2617 | #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } |
2618 | BFCI_FREE (obj_aout_symbols (abfd)); | |
2619 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2620 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
5c8444f8 | 2621 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
4852416e DHW |
2622 | BFCI_FREE (o->relocation); |
2623 | #undef BFCI_FREE | |
5c8444f8 ILT |
2624 | |
2625 | return true; | |
2626 | } | |
4c3721d5 ILT |
2627 | \f |
2628 | /* a.out link code. */ | |
2629 | ||
4c3721d5 ILT |
2630 | static boolean aout_link_add_object_symbols |
2631 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2632 | static boolean aout_link_check_archive_element | |
2633 | PARAMS ((bfd *, struct bfd_link_info *, boolean *)); | |
4c3721d5 ILT |
2634 | static boolean aout_link_free_symbols PARAMS ((bfd *)); |
2635 | static boolean aout_link_check_ar_symbols | |
2636 | PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded)); | |
2637 | static boolean aout_link_add_symbols | |
2638 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2639 | ||
2640 | /* Routine to create an entry in an a.out link hash table. */ | |
2641 | ||
e85e8bfe ILT |
2642 | struct bfd_hash_entry * |
2643 | NAME(aout,link_hash_newfunc) (entry, table, string) | |
4c3721d5 ILT |
2644 | struct bfd_hash_entry *entry; |
2645 | struct bfd_hash_table *table; | |
2646 | const char *string; | |
2647 | { | |
2648 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2649 | ||
2650 | /* Allocate the structure if it has not already been allocated by a | |
2651 | subclass. */ | |
2652 | if (ret == (struct aout_link_hash_entry *) NULL) | |
2653 | ret = ((struct aout_link_hash_entry *) | |
2654 | bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry))); | |
9783e04a DM |
2655 | if (ret == (struct aout_link_hash_entry *) NULL) |
2656 | { | |
68241b2b | 2657 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
2658 | return (struct bfd_hash_entry *) ret; |
2659 | } | |
4c3721d5 ILT |
2660 | |
2661 | /* Call the allocation method of the superclass. */ | |
2662 | ret = ((struct aout_link_hash_entry *) | |
2663 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2664 | table, string)); | |
9783e04a | 2665 | if (ret) |
35fee729 ILT |
2666 | { |
2667 | /* Set local fields. */ | |
2668 | ret->written = false; | |
2669 | ret->indx = -1; | |
2670 | } | |
4c3721d5 ILT |
2671 | |
2672 | return (struct bfd_hash_entry *) ret; | |
2673 | } | |
2674 | ||
e85e8bfe ILT |
2675 | /* Initialize an a.out link hash table. */ |
2676 | ||
2677 | boolean | |
2678 | NAME(aout,link_hash_table_init) (table, abfd, newfunc) | |
2679 | struct aout_link_hash_table *table; | |
2680 | bfd *abfd; | |
2681 | struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, | |
2682 | struct bfd_hash_table *, | |
2683 | const char *)); | |
2684 | { | |
2685 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
2686 | } | |
2687 | ||
4c3721d5 ILT |
2688 | /* Create an a.out link hash table. */ |
2689 | ||
2690 | struct bfd_link_hash_table * | |
2691 | NAME(aout,link_hash_table_create) (abfd) | |
2692 | bfd *abfd; | |
2693 | { | |
2694 | struct aout_link_hash_table *ret; | |
2695 | ||
2696 | ret = ((struct aout_link_hash_table *) | |
9783e04a DM |
2697 | malloc (sizeof (struct aout_link_hash_table))); |
2698 | if (ret == (struct aout_link_hash_table *) NULL) | |
2699 | { | |
68241b2b | 2700 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
2701 | return (struct bfd_link_hash_table *) NULL; |
2702 | } | |
e85e8bfe ILT |
2703 | if (! NAME(aout,link_hash_table_init) (ret, abfd, |
2704 | NAME(aout,link_hash_newfunc))) | |
4c3721d5 ILT |
2705 | { |
2706 | free (ret); | |
2707 | return (struct bfd_link_hash_table *) NULL; | |
2708 | } | |
2709 | return &ret->root; | |
2710 | } | |
2711 | ||
4c3721d5 ILT |
2712 | /* Given an a.out BFD, add symbols to the global hash table as |
2713 | appropriate. */ | |
2714 | ||
2715 | boolean | |
2716 | NAME(aout,link_add_symbols) (abfd, info) | |
2717 | bfd *abfd; | |
2718 | struct bfd_link_info *info; | |
2719 | { | |
2720 | switch (bfd_get_format (abfd)) | |
2721 | { | |
2722 | case bfd_object: | |
2723 | return aout_link_add_object_symbols (abfd, info); | |
2724 | case bfd_archive: | |
2725 | return _bfd_generic_link_add_archive_symbols | |
2726 | (abfd, info, aout_link_check_archive_element); | |
2727 | default: | |
68241b2b | 2728 | bfd_set_error (bfd_error_wrong_format); |
4c3721d5 ILT |
2729 | return false; |
2730 | } | |
2731 | } | |
2732 | ||
2733 | /* Add symbols from an a.out object file. */ | |
2734 | ||
2735 | static boolean | |
2736 | aout_link_add_object_symbols (abfd, info) | |
2737 | bfd *abfd; | |
2738 | struct bfd_link_info *info; | |
2739 | { | |
5c8444f8 | 2740 | if (! aout_get_external_symbols (abfd)) |
4c3721d5 ILT |
2741 | return false; |
2742 | if (! aout_link_add_symbols (abfd, info)) | |
2743 | return false; | |
2744 | if (! info->keep_memory) | |
2745 | { | |
2746 | if (! aout_link_free_symbols (abfd)) | |
2747 | return false; | |
2748 | } | |
2749 | return true; | |
2750 | } | |
2751 | ||
2752 | /* Check a single archive element to see if we need to include it in | |
2753 | the link. *PNEEDED is set according to whether this element is | |
2754 | needed in the link or not. This is called from | |
2755 | _bfd_generic_link_add_archive_symbols. */ | |
2756 | ||
2757 | static boolean | |
2758 | aout_link_check_archive_element (abfd, info, pneeded) | |
2759 | bfd *abfd; | |
2760 | struct bfd_link_info *info; | |
2761 | boolean *pneeded; | |
2762 | { | |
5c8444f8 | 2763 | if (! aout_get_external_symbols (abfd)) |
4c3721d5 ILT |
2764 | return false; |
2765 | ||
2766 | if (! aout_link_check_ar_symbols (abfd, info, pneeded)) | |
2767 | return false; | |
2768 | ||
2769 | if (*pneeded) | |
2770 | { | |
2771 | if (! aout_link_add_symbols (abfd, info)) | |
2772 | return false; | |
2773 | } | |
2774 | ||
1afd2380 | 2775 | if (! info->keep_memory || ! *pneeded) |
4c3721d5 ILT |
2776 | { |
2777 | if (! aout_link_free_symbols (abfd)) | |
2778 | return false; | |
2779 | } | |
2780 | ||
2781 | return true; | |
2782 | } | |
2783 | ||
4c3721d5 ILT |
2784 | /* Free up the internal symbols read from an a.out file. */ |
2785 | ||
2786 | static boolean | |
2787 | aout_link_free_symbols (abfd) | |
2788 | bfd *abfd; | |
2789 | { | |
2790 | if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) | |
2791 | { | |
2792 | free ((PTR) obj_aout_external_syms (abfd)); | |
2793 | obj_aout_external_syms (abfd) = (struct external_nlist *) NULL; | |
2794 | } | |
2795 | if (obj_aout_external_strings (abfd) != (char *) NULL) | |
2796 | { | |
2797 | free ((PTR) obj_aout_external_strings (abfd)); | |
2798 | obj_aout_external_strings (abfd) = (char *) NULL; | |
2799 | } | |
2800 | return true; | |
2801 | } | |
2802 | ||
2803 | /* Look through the internal symbols to see if this object file should | |
2804 | be included in the link. We should include this object file if it | |
2805 | defines any symbols which are currently undefined. If this object | |
2806 | file defines a common symbol, then we may adjust the size of the | |
2807 | known symbol but we do not include the object file in the link | |
2808 | (unless there is some other reason to include it). */ | |
2809 | ||
2810 | static boolean | |
2811 | aout_link_check_ar_symbols (abfd, info, pneeded) | |
2812 | bfd *abfd; | |
2813 | struct bfd_link_info *info; | |
2814 | boolean *pneeded; | |
2815 | { | |
2816 | register struct external_nlist *p; | |
2817 | struct external_nlist *pend; | |
2818 | char *strings; | |
2819 | ||
2820 | *pneeded = false; | |
2821 | ||
2822 | /* Look through all the symbols. */ | |
2823 | p = obj_aout_external_syms (abfd); | |
2824 | pend = p + obj_aout_external_sym_count (abfd); | |
2825 | strings = obj_aout_external_strings (abfd); | |
2826 | for (; p < pend; p++) | |
2827 | { | |
2828 | int type = bfd_h_get_8 (abfd, p->e_type); | |
2829 | const char *name; | |
2830 | struct bfd_link_hash_entry *h; | |
2831 | ||
4298e311 ILT |
2832 | /* Ignore symbols that are not externally visible. This is an |
2833 | optimization only, as we check the type more thoroughly | |
2834 | below. */ | |
4587b578 ILT |
2835 | if (((type & N_EXT) == 0 |
2836 | || (type & N_STAB) != 0 | |
2837 | || type == N_FN) | |
4298e311 ILT |
2838 | && type != N_WEAKA |
2839 | && type != N_WEAKT | |
2840 | && type != N_WEAKD | |
2841 | && type != N_WEAKB) | |
9b39ed6b ILT |
2842 | { |
2843 | if (type == N_WARNING | |
2844 | || type == N_INDR) | |
2845 | ++p; | |
2846 | continue; | |
2847 | } | |
4c3721d5 ILT |
2848 | |
2849 | name = strings + GET_WORD (abfd, p->e_strx); | |
2850 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); | |
2851 | ||
2852 | /* We are only interested in symbols that are currently | |
2853 | undefined or common. */ | |
2854 | if (h == (struct bfd_link_hash_entry *) NULL | |
2855 | || (h->type != bfd_link_hash_undefined | |
2856 | && h->type != bfd_link_hash_common)) | |
9b39ed6b ILT |
2857 | { |
2858 | if (type == (N_INDR | N_EXT)) | |
2859 | ++p; | |
2860 | continue; | |
2861 | } | |
4c3721d5 | 2862 | |
9b39ed6b ILT |
2863 | if (type == (N_TEXT | N_EXT) |
2864 | || type == (N_DATA | N_EXT) | |
2865 | || type == (N_BSS | N_EXT) | |
2866 | || type == (N_ABS | N_EXT) | |
2867 | || type == (N_INDR | N_EXT)) | |
4c3721d5 ILT |
2868 | { |
2869 | /* This object file defines this symbol. We must link it | |
2870 | in. This is true regardless of whether the current | |
2871 | definition of the symbol is undefined or common. If the | |
2872 | current definition is common, we have a case in which we | |
2873 | have already seen an object file including | |
2874 | int a; | |
2875 | and this object file from the archive includes | |
2876 | int a = 5; | |
f88c9008 ILT |
2877 | In such a case we must include this object file. |
2878 | ||
2879 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
2880 | element if the symbol is defined in the .data section, | |
2881 | but not if it is defined in the .text section. That | |
2882 | seems a bit crazy to me, and I haven't implemented it. | |
2883 | However, it might be correct. */ | |
4c3721d5 ILT |
2884 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) |
2885 | return false; | |
2886 | *pneeded = true; | |
2887 | return true; | |
2888 | } | |
2889 | ||
9b39ed6b | 2890 | if (type == (N_UNDF | N_EXT)) |
4c3721d5 ILT |
2891 | { |
2892 | bfd_vma value; | |
2893 | ||
2894 | value = GET_WORD (abfd, p->e_value); | |
2895 | if (value != 0) | |
2896 | { | |
2897 | /* This symbol is common in the object from the archive | |
2898 | file. */ | |
2899 | if (h->type == bfd_link_hash_undefined) | |
2900 | { | |
2901 | bfd *symbfd; | |
e1f99f60 | 2902 | unsigned int power; |
4c3721d5 ILT |
2903 | |
2904 | symbfd = h->u.undef.abfd; | |
2905 | if (symbfd == (bfd *) NULL) | |
2906 | { | |
2907 | /* This symbol was created as undefined from | |
2908 | outside BFD. We assume that we should link | |
2909 | in the object file. This is done for the -u | |
2910 | option in the linker. */ | |
2911 | if (! (*info->callbacks->add_archive_element) (info, | |
2912 | abfd, | |
2913 | name)) | |
2914 | return false; | |
2915 | *pneeded = true; | |
2916 | return true; | |
2917 | } | |
2918 | /* Turn the current link symbol into a common | |
2919 | symbol. It is already on the undefs list. */ | |
2920 | h->type = bfd_link_hash_common; | |
2921 | h->u.c.size = value; | |
e1f99f60 ILT |
2922 | if (h->u.c.size != value) |
2923 | { | |
2924 | /* The size did not fit in the bitfield. */ | |
2925 | bfd_set_error (bfd_error_bad_value); | |
2926 | return false; | |
2927 | } | |
2928 | ||
2929 | /* FIXME: This isn't quite right. The maximum | |
2930 | alignment of a common symbol should be set by the | |
2931 | architecture of the output file, not of the input | |
2932 | file. */ | |
2933 | power = bfd_log2 (value); | |
2934 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
2935 | power = bfd_get_arch_info (abfd)->section_align_power; | |
2936 | h->u.c.alignment_power = power; | |
2937 | ||
4c3721d5 ILT |
2938 | h->u.c.section = bfd_make_section_old_way (symbfd, |
2939 | "COMMON"); | |
2940 | } | |
2941 | else | |
2942 | { | |
2943 | /* Adjust the size of the common symbol if | |
2944 | necessary. */ | |
2945 | if (value > h->u.c.size) | |
2946 | h->u.c.size = value; | |
2947 | } | |
2948 | } | |
2949 | } | |
4298e311 ILT |
2950 | |
2951 | if (type == N_WEAKA | |
2952 | || type == N_WEAKT | |
2953 | || type == N_WEAKD | |
2954 | || type == N_WEAKB) | |
2955 | { | |
2956 | /* This symbol is weak but defined. We must pull it in if | |
2957 | the current link symbol is undefined, but we don't want | |
2958 | it if the current link symbol is common. */ | |
2959 | if (h->type == bfd_link_hash_undefined) | |
2960 | { | |
2961 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) | |
2962 | return false; | |
2963 | *pneeded = true; | |
2964 | return true; | |
2965 | } | |
2966 | } | |
4c3721d5 ILT |
2967 | } |
2968 | ||
2969 | /* We do not need this object file. */ | |
2970 | return true; | |
2971 | } | |
2972 | ||
2973 | /* Add all symbols from an object file to the hash table. */ | |
2974 | ||
2975 | static boolean | |
2976 | aout_link_add_symbols (abfd, info) | |
2977 | bfd *abfd; | |
2978 | struct bfd_link_info *info; | |
2979 | { | |
e85e8bfe ILT |
2980 | boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *, |
2981 | const char *, flagword, asection *, | |
2982 | bfd_vma, const char *, boolean, | |
2983 | boolean, | |
2984 | struct bfd_link_hash_entry **)); | |
4c3721d5 ILT |
2985 | bfd_size_type sym_count; |
2986 | char *strings; | |
2987 | boolean copy; | |
2988 | struct aout_link_hash_entry **sym_hash; | |
2989 | register struct external_nlist *p; | |
2990 | struct external_nlist *pend; | |
2991 | ||
2992 | sym_count = obj_aout_external_sym_count (abfd); | |
2993 | strings = obj_aout_external_strings (abfd); | |
2994 | if (info->keep_memory) | |
2995 | copy = false; | |
2996 | else | |
2997 | copy = true; | |
2998 | ||
4c3721d5 ILT |
2999 | /* We keep a list of the linker hash table entries that correspond |
3000 | to particular symbols. We could just look them up in the hash | |
3001 | table, but keeping the list is more efficient. Perhaps this | |
3002 | should be conditional on info->keep_memory. */ | |
3003 | sym_hash = ((struct aout_link_hash_entry **) | |
3004 | bfd_alloc (abfd, | |
3005 | ((size_t) sym_count | |
3006 | * sizeof (struct aout_link_hash_entry *)))); | |
e85e8bfe | 3007 | if (sym_hash == NULL && sym_count != 0) |
9783e04a | 3008 | { |
68241b2b | 3009 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
3010 | return false; |
3011 | } | |
4c3721d5 ILT |
3012 | obj_aout_sym_hashes (abfd) = sym_hash; |
3013 | ||
e85e8bfe ILT |
3014 | if ((abfd->flags & DYNAMIC) != 0 |
3015 | && aout_backend_info (abfd)->add_dynamic_symbols != NULL) | |
3016 | { | |
3017 | if (! (*aout_backend_info (abfd)->add_dynamic_symbols) (abfd, info)) | |
3018 | return false; | |
3019 | } | |
3020 | ||
3021 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; | |
3022 | if (add_one_symbol == NULL) | |
3023 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
3024 | ||
4c3721d5 ILT |
3025 | p = obj_aout_external_syms (abfd); |
3026 | pend = p + sym_count; | |
3027 | for (; p < pend; p++, sym_hash++) | |
3028 | { | |
3029 | int type; | |
3030 | const char *name; | |
3031 | bfd_vma value; | |
3032 | asection *section; | |
3033 | flagword flags; | |
3034 | const char *string; | |
3035 | ||
3036 | *sym_hash = NULL; | |
3037 | ||
3038 | type = bfd_h_get_8 (abfd, p->e_type); | |
3039 | ||
3040 | /* Ignore debugging symbols. */ | |
3041 | if ((type & N_STAB) != 0) | |
3042 | continue; | |
3043 | ||
4c3721d5 ILT |
3044 | name = strings + GET_WORD (abfd, p->e_strx); |
3045 | value = GET_WORD (abfd, p->e_value); | |
3046 | flags = BSF_GLOBAL; | |
3047 | string = NULL; | |
3048 | switch (type) | |
3049 | { | |
3050 | default: | |
3051 | abort (); | |
4298e311 ILT |
3052 | |
3053 | case N_UNDF: | |
3054 | case N_ABS: | |
3055 | case N_TEXT: | |
3056 | case N_DATA: | |
3057 | case N_BSS: | |
3058 | case N_FN_SEQ: | |
3059 | case N_COMM: | |
3060 | case N_SETV: | |
3061 | case N_FN: | |
3062 | /* Ignore symbols that are not externally visible. */ | |
3063 | continue; | |
3064 | case N_INDR: | |
3065 | /* Ignore local indirect symbol. */ | |
3066 | ++p; | |
3067 | ++sym_hash; | |
3068 | continue; | |
3069 | ||
4c3721d5 | 3070 | case N_UNDF | N_EXT: |
4298e311 ILT |
3071 | if (value == 0) |
3072 | { | |
4587b578 | 3073 | section = bfd_und_section_ptr; |
4298e311 ILT |
3074 | flags = 0; |
3075 | } | |
4c3721d5 | 3076 | else |
4587b578 | 3077 | section = bfd_com_section_ptr; |
4c3721d5 ILT |
3078 | break; |
3079 | case N_ABS | N_EXT: | |
4587b578 | 3080 | section = bfd_abs_section_ptr; |
4c3721d5 ILT |
3081 | break; |
3082 | case N_TEXT | N_EXT: | |
3083 | section = obj_textsec (abfd); | |
3084 | value -= bfd_get_section_vma (abfd, section); | |
3085 | break; | |
3086 | case N_DATA | N_EXT: | |
2cd086e3 ILT |
3087 | case N_SETV | N_EXT: |
3088 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
3089 | translate_from_native_sym_flags. */ | |
4c3721d5 ILT |
3090 | section = obj_datasec (abfd); |
3091 | value -= bfd_get_section_vma (abfd, section); | |
3092 | break; | |
3093 | case N_BSS | N_EXT: | |
3094 | section = obj_bsssec (abfd); | |
3095 | value -= bfd_get_section_vma (abfd, section); | |
3096 | break; | |
3097 | case N_INDR | N_EXT: | |
3098 | /* An indirect symbol. The next symbol is the symbol | |
3099 | which this one really is. */ | |
3100 | BFD_ASSERT (p + 1 < pend); | |
3101 | ++p; | |
3102 | string = strings + GET_WORD (abfd, p->e_strx); | |
4587b578 | 3103 | section = bfd_ind_section_ptr; |
4c3721d5 ILT |
3104 | flags |= BSF_INDIRECT; |
3105 | break; | |
3106 | case N_COMM | N_EXT: | |
4587b578 | 3107 | section = bfd_com_section_ptr; |
4c3721d5 | 3108 | break; |
964affdc | 3109 | case N_SETA: case N_SETA | N_EXT: |
4587b578 | 3110 | section = bfd_abs_section_ptr; |
4c3721d5 ILT |
3111 | flags |= BSF_CONSTRUCTOR; |
3112 | break; | |
964affdc | 3113 | case N_SETT: case N_SETT | N_EXT: |
4c3721d5 ILT |
3114 | section = obj_textsec (abfd); |
3115 | flags |= BSF_CONSTRUCTOR; | |
3116 | value -= bfd_get_section_vma (abfd, section); | |
3117 | break; | |
964affdc | 3118 | case N_SETD: case N_SETD | N_EXT: |
4c3721d5 ILT |
3119 | section = obj_datasec (abfd); |
3120 | flags |= BSF_CONSTRUCTOR; | |
3121 | value -= bfd_get_section_vma (abfd, section); | |
3122 | break; | |
964affdc | 3123 | case N_SETB: case N_SETB | N_EXT: |
4c3721d5 ILT |
3124 | section = obj_bsssec (abfd); |
3125 | flags |= BSF_CONSTRUCTOR; | |
3126 | value -= bfd_get_section_vma (abfd, section); | |
3127 | break; | |
3128 | case N_WARNING: | |
3129 | /* A warning symbol. The next symbol is the one to warn | |
3130 | about. */ | |
3131 | BFD_ASSERT (p + 1 < pend); | |
3132 | ++p; | |
3133 | string = name; | |
3134 | name = strings + GET_WORD (abfd, p->e_strx); | |
4587b578 | 3135 | section = bfd_und_section_ptr; |
4c3721d5 ILT |
3136 | flags |= BSF_WARNING; |
3137 | break; | |
4298e311 | 3138 | case N_WEAKU: |
4587b578 | 3139 | section = bfd_und_section_ptr; |
4298e311 ILT |
3140 | flags = BSF_WEAK; |
3141 | break; | |
3142 | case N_WEAKA: | |
4587b578 | 3143 | section = bfd_abs_section_ptr; |
4298e311 ILT |
3144 | flags = BSF_WEAK; |
3145 | break; | |
3146 | case N_WEAKT: | |
3147 | section = obj_textsec (abfd); | |
3148 | value -= bfd_get_section_vma (abfd, section); | |
3149 | flags = BSF_WEAK; | |
3150 | break; | |
3151 | case N_WEAKD: | |
3152 | section = obj_datasec (abfd); | |
3153 | value -= bfd_get_section_vma (abfd, section); | |
3154 | flags = BSF_WEAK; | |
3155 | break; | |
3156 | case N_WEAKB: | |
3157 | section = obj_bsssec (abfd); | |
3158 | value -= bfd_get_section_vma (abfd, section); | |
3159 | flags = BSF_WEAK; | |
3160 | break; | |
4c3721d5 ILT |
3161 | } |
3162 | ||
e85e8bfe | 3163 | if (! ((*add_one_symbol) |
e68de5d5 | 3164 | (info, abfd, name, flags, section, value, string, copy, false, |
ec099b4b | 3165 | (struct bfd_link_hash_entry **) sym_hash))) |
4c3721d5 | 3166 | return false; |
53155af1 | 3167 | |
e1f99f60 ILT |
3168 | /* Restrict the maximum alignment of a common symbol based on |
3169 | the architecture, since a.out has no way to represent | |
3170 | alignment requirements of a section in a .o file. FIXME: | |
3171 | This isn't quite right: it should use the architecture of the | |
3172 | output file, not the input files. */ | |
3173 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
3174 | && ((*sym_hash)->root.u.c.alignment_power > | |
3175 | bfd_get_arch_info (abfd)->section_align_power)) | |
3176 | (*sym_hash)->root.u.c.alignment_power = | |
3177 | bfd_get_arch_info (abfd)->section_align_power; | |
3178 | ||
f4945271 ILT |
3179 | /* If this is a set symbol, and we are not building sets, then |
3180 | it is possible for the hash entry to not have been set. In | |
3181 | such a case, treat the symbol as not globally defined. */ | |
3182 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
3183 | { | |
3184 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
3185 | *sym_hash = NULL; | |
3186 | } | |
3187 | ||
53155af1 ILT |
3188 | if (type == (N_INDR | N_EXT) || type == N_WARNING) |
3189 | ++sym_hash; | |
4c3721d5 ILT |
3190 | } |
3191 | ||
3192 | return true; | |
3193 | } | |
3194 | ||
3195 | /* During the final link step we need to pass around a bunch of | |
3196 | information, so we do it in an instance of this structure. */ | |
3197 | ||
3198 | struct aout_final_link_info | |
3199 | { | |
3200 | /* General link information. */ | |
3201 | struct bfd_link_info *info; | |
3202 | /* Output bfd. */ | |
3203 | bfd *output_bfd; | |
3204 | /* Reloc file positions. */ | |
3205 | file_ptr treloff, dreloff; | |
3206 | /* File position of symbols. */ | |
3207 | file_ptr symoff; | |
3208 | /* String table. */ | |
1afd2380 ILT |
3209 | struct bfd_strtab_hash *strtab; |
3210 | /* A buffer large enough to hold the contents of any section. */ | |
3211 | bfd_byte *contents; | |
3212 | /* A buffer large enough to hold the relocs of any section. */ | |
3213 | PTR relocs; | |
3214 | /* A buffer large enough to hold the symbol map of any input BFD. */ | |
3215 | int *symbol_map; | |
3216 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
3217 | struct external_nlist *output_syms; | |
4c3721d5 ILT |
3218 | }; |
3219 | ||
3220 | static boolean aout_link_input_bfd | |
3221 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); | |
3222 | static boolean aout_link_write_symbols | |
1afd2380 | 3223 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); |
4c3721d5 ILT |
3224 | static boolean aout_link_write_other_symbol |
3225 | PARAMS ((struct aout_link_hash_entry *, PTR)); | |
3226 | static boolean aout_link_input_section | |
3227 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, | |
3228 | asection *input_section, file_ptr *reloff_ptr, | |
1afd2380 | 3229 | bfd_size_type rel_size)); |
4c3721d5 ILT |
3230 | static boolean aout_link_input_section_std |
3231 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, | |
3232 | asection *input_section, struct reloc_std_external *, | |
1afd2380 | 3233 | bfd_size_type rel_size, bfd_byte *contents)); |
4c3721d5 ILT |
3234 | static boolean aout_link_input_section_ext |
3235 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, | |
3236 | asection *input_section, struct reloc_ext_external *, | |
1afd2380 | 3237 | bfd_size_type rel_size, bfd_byte *contents)); |
4c3721d5 ILT |
3238 | static INLINE asection *aout_reloc_index_to_section |
3239 | PARAMS ((bfd *, int)); | |
ec099b4b ILT |
3240 | static boolean aout_link_reloc_link_order |
3241 | PARAMS ((struct aout_final_link_info *, asection *, | |
3242 | struct bfd_link_order *)); | |
4c3721d5 ILT |
3243 | |
3244 | /* Do the final link step. This is called on the output BFD. The | |
3245 | INFO structure should point to a list of BFDs linked through the | |
3246 | link_next field which can be used to find each BFD which takes part | |
3247 | in the output. Also, each section in ABFD should point to a list | |
3248 | of bfd_link_order structures which list all the input sections for | |
3249 | the output section. */ | |
3250 | ||
3251 | boolean | |
3252 | NAME(aout,final_link) (abfd, info, callback) | |
3253 | bfd *abfd; | |
3254 | struct bfd_link_info *info; | |
3255 | void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *)); | |
3256 | { | |
3257 | struct aout_final_link_info aout_info; | |
3258 | register bfd *sub; | |
1afd2380 ILT |
3259 | bfd_size_type trsize, drsize; |
3260 | size_t max_contents_size; | |
3261 | size_t max_relocs_size; | |
3262 | size_t max_sym_count; | |
4c3721d5 ILT |
3263 | bfd_size_type text_size; |
3264 | file_ptr text_end; | |
3265 | register struct bfd_link_order *p; | |
3266 | asection *o; | |
ec099b4b | 3267 | boolean have_link_order_relocs; |
4c3721d5 ILT |
3268 | |
3269 | aout_info.info = info; | |
3270 | aout_info.output_bfd = abfd; | |
1afd2380 ILT |
3271 | aout_info.contents = NULL; |
3272 | aout_info.relocs = NULL; | |
3273 | ||
3274 | /* Figure out the largest section size. Also, if generating | |
3275 | relocateable output, count the relocs. */ | |
3276 | trsize = 0; | |
3277 | drsize = 0; | |
3278 | max_contents_size = 0; | |
3279 | max_relocs_size = 0; | |
3280 | max_sym_count = 0; | |
3281 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
4c3721d5 | 3282 | { |
1afd2380 | 3283 | size_t sz; |
4c3721d5 | 3284 | |
1afd2380 | 3285 | if (info->relocateable) |
4c3721d5 | 3286 | { |
6c8fa8e6 | 3287 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
4c3721d5 ILT |
3288 | { |
3289 | trsize += exec_hdr (sub)->a_trsize; | |
3290 | drsize += exec_hdr (sub)->a_drsize; | |
3291 | } | |
3292 | else | |
3293 | { | |
3294 | /* FIXME: We need to identify the .text and .data sections | |
3295 | and call get_reloc_upper_bound and canonicalize_reloc to | |
3296 | work out the number of relocs needed, and then multiply | |
3297 | by the reloc size. */ | |
3298 | abort (); | |
3299 | } | |
3300 | } | |
1afd2380 ILT |
3301 | |
3302 | sz = bfd_section_size (sub, obj_textsec (sub)); | |
3303 | if (sz > max_contents_size) | |
3304 | max_contents_size = sz; | |
3305 | sz = bfd_section_size (sub, obj_datasec (sub)); | |
3306 | if (sz > max_contents_size) | |
3307 | max_contents_size = sz; | |
3308 | ||
3309 | sz = exec_hdr (sub)->a_trsize; | |
3310 | if (sz > max_relocs_size) | |
3311 | max_relocs_size = sz; | |
3312 | sz = exec_hdr (sub)->a_drsize; | |
3313 | if (sz > max_relocs_size) | |
3314 | max_relocs_size = sz; | |
3315 | ||
3316 | sz = obj_aout_external_sym_count (sub); | |
3317 | if (sz > max_sym_count) | |
3318 | max_sym_count = sz; | |
3319 | } | |
3320 | ||
3321 | if (info->relocateable) | |
3322 | { | |
ec6b18c4 ILT |
3323 | if (obj_textsec (abfd) != (asection *) NULL) |
3324 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
3325 | ->link_order_head) | |
3326 | * obj_reloc_entry_size (abfd)); | |
ec6b18c4 ILT |
3327 | if (obj_datasec (abfd) != (asection *) NULL) |
3328 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
3329 | ->link_order_head) | |
3330 | * obj_reloc_entry_size (abfd)); | |
4c3721d5 ILT |
3331 | } |
3332 | ||
1afd2380 ILT |
3333 | exec_hdr (abfd)->a_trsize = trsize; |
3334 | exec_hdr (abfd)->a_drsize = drsize; | |
3335 | ||
964affdc DM |
3336 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); |
3337 | ||
4c3721d5 ILT |
3338 | /* Adjust the section sizes and vmas according to the magic number. |
3339 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
3340 | filepos for each section. */ | |
3341 | if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) | |
1afd2380 | 3342 | goto error_return; |
4c3721d5 ILT |
3343 | |
3344 | /* The relocation and symbol file positions differ among a.out | |
3345 | targets. We are passed a callback routine from the backend | |
3346 | specific code to handle this. | |
3347 | FIXME: At this point we do not know how much space the symbol | |
3348 | table will require. This will not work for any (nonstandard) | |
3349 | a.out target that needs to know the symbol table size before it | |
3350 | can compute the relocation file positions. This may or may not | |
3351 | be the case for the hp300hpux target, for example. */ | |
3352 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, | |
3353 | &aout_info.symoff); | |
3354 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
3355 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
3356 | obj_sym_filepos (abfd) = aout_info.symoff; | |
3357 | ||
3358 | /* We keep a count of the symbols as we output them. */ | |
3359 | obj_aout_external_sym_count (abfd) = 0; | |
3360 | ||
3361 | /* We accumulate the string table as we write out the symbols. */ | |
1afd2380 ILT |
3362 | aout_info.strtab = _bfd_stringtab_init (); |
3363 | if (aout_info.strtab == NULL) | |
3364 | goto error_return; | |
3365 | ||
3366 | /* Allocate buffers to hold section contents and relocs. */ | |
3367 | aout_info.contents = (bfd_byte *) malloc (max_contents_size); | |
3368 | aout_info.relocs = (PTR) malloc (max_relocs_size); | |
3369 | aout_info.symbol_map = (int *) malloc (max_sym_count * sizeof (int *)); | |
3370 | aout_info.output_syms = ((struct external_nlist *) | |
3371 | malloc ((max_sym_count + 1) | |
3372 | * sizeof (struct external_nlist))); | |
3373 | if ((aout_info.contents == NULL && max_contents_size != 0) | |
3374 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
3375 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
3376 | || aout_info.output_syms == NULL) | |
3377 | { | |
3378 | bfd_set_error (bfd_error_no_memory); | |
3379 | goto error_return; | |
3380 | } | |
4c3721d5 ILT |
3381 | |
3382 | /* The most time efficient way to do the link would be to read all | |
3383 | the input object files into memory and then sort out the | |
3384 | information into the output file. Unfortunately, that will | |
3385 | probably use too much memory. Another method would be to step | |
3386 | through everything that composes the text section and write it | |
3387 | out, and then everything that composes the data section and write | |
3388 | it out, and then write out the relocs, and then write out the | |
3389 | symbols. Unfortunately, that requires reading stuff from each | |
3390 | input file several times, and we will not be able to keep all the | |
3391 | input files open simultaneously, and reopening them will be slow. | |
3392 | ||
3393 | What we do is basically process one input file at a time. We do | |
3394 | everything we need to do with an input file once--copy over the | |
3395 | section contents, handle the relocation information, and write | |
3396 | out the symbols--and then we throw away the information we read | |
3397 | from it. This approach requires a lot of lseeks of the output | |
3398 | file, which is unfortunate but still faster than reopening a lot | |
3399 | of files. | |
3400 | ||
3401 | We use the output_has_begun field of the input BFDs to see | |
3402 | whether we have already handled it. */ | |
3403 | for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next) | |
3404 | sub->output_has_begun = false; | |
3405 | ||
ec099b4b | 3406 | have_link_order_relocs = false; |
4c3721d5 ILT |
3407 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
3408 | { | |
4c3721d5 ILT |
3409 | for (p = o->link_order_head; |
3410 | p != (struct bfd_link_order *) NULL; | |
3411 | p = p->next) | |
3412 | { | |
e68de5d5 ILT |
3413 | if (p->type == bfd_indirect_link_order |
3414 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
3415 | == bfd_target_aout_flavour)) | |
4c3721d5 | 3416 | { |
e68de5d5 ILT |
3417 | bfd *input_bfd; |
3418 | ||
4c3721d5 | 3419 | input_bfd = p->u.indirect.section->owner; |
e68de5d5 | 3420 | if (! input_bfd->output_has_begun) |
4c3721d5 | 3421 | { |
e68de5d5 | 3422 | if (! aout_link_input_bfd (&aout_info, input_bfd)) |
1afd2380 | 3423 | goto error_return; |
e68de5d5 | 3424 | input_bfd->output_has_begun = true; |
4c3721d5 | 3425 | } |
e68de5d5 | 3426 | } |
ec099b4b ILT |
3427 | else if (p->type == bfd_section_reloc_link_order |
3428 | || p->type == bfd_symbol_reloc_link_order) | |
3429 | { | |
3430 | /* These are handled below. */ | |
3431 | have_link_order_relocs = true; | |
3432 | } | |
e68de5d5 ILT |
3433 | else |
3434 | { | |
4c3721d5 | 3435 | if (! _bfd_default_link_order (abfd, info, o, p)) |
1afd2380 | 3436 | goto error_return; |
4c3721d5 ILT |
3437 | } |
3438 | } | |
3439 | } | |
3440 | ||
3441 | /* Write out any symbols that we have not already written out. */ | |
3442 | aout_link_hash_traverse (aout_hash_table (info), | |
3443 | aout_link_write_other_symbol, | |
3444 | (PTR) &aout_info); | |
3445 | ||
ec099b4b ILT |
3446 | /* Now handle any relocs we were asked to create by the linker. |
3447 | These did not come from any input file. We must do these after | |
3448 | we have written out all the symbols, so that we know the symbol | |
3449 | indices to use. */ | |
3450 | if (have_link_order_relocs) | |
3451 | { | |
3452 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
3453 | { | |
3454 | for (p = o->link_order_head; | |
3455 | p != (struct bfd_link_order *) NULL; | |
3456 | p = p->next) | |
3457 | { | |
3458 | if (p->type == bfd_section_reloc_link_order | |
3459 | || p->type == bfd_symbol_reloc_link_order) | |
3460 | { | |
3461 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
1afd2380 | 3462 | goto error_return; |
ec099b4b ILT |
3463 | } |
3464 | } | |
3465 | } | |
3466 | } | |
3467 | ||
1afd2380 ILT |
3468 | if (aout_info.contents != NULL) |
3469 | { | |
3470 | free (aout_info.contents); | |
3471 | aout_info.contents = NULL; | |
3472 | } | |
3473 | if (aout_info.relocs != NULL) | |
3474 | { | |
3475 | free (aout_info.relocs); | |
3476 | aout_info.relocs = NULL; | |
3477 | } | |
3478 | if (aout_info.symbol_map != NULL) | |
3479 | { | |
3480 | free (aout_info.symbol_map); | |
3481 | aout_info.symbol_map = NULL; | |
3482 | } | |
3483 | if (aout_info.output_syms != NULL) | |
3484 | { | |
3485 | free (aout_info.output_syms); | |
3486 | aout_info.output_syms = NULL; | |
3487 | } | |
3488 | ||
e85e8bfe ILT |
3489 | /* Finish up any dynamic linking we may be doing. */ |
3490 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
3491 | { | |
3492 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
1afd2380 | 3493 | goto error_return; |
e85e8bfe ILT |
3494 | } |
3495 | ||
4c3721d5 ILT |
3496 | /* Update the header information. */ |
3497 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
3498 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
3499 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
3500 | obj_textsec (abfd)->reloc_count = | |
3501 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
3502 | obj_datasec (abfd)->reloc_count = | |
3503 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
3504 | ||
3505 | /* Write out the string table. */ | |
3506 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0) | |
1afd2380 ILT |
3507 | goto error_return; |
3508 | return emit_stringtab (abfd, aout_info.strtab); | |
3509 | ||
3510 | error_return: | |
3511 | if (aout_info.contents != NULL) | |
3512 | free (aout_info.contents); | |
3513 | if (aout_info.relocs != NULL) | |
3514 | free (aout_info.relocs); | |
3515 | if (aout_info.symbol_map != NULL) | |
3516 | free (aout_info.symbol_map); | |
3517 | if (aout_info.output_syms != NULL) | |
3518 | free (aout_info.output_syms); | |
3519 | return false; | |
4c3721d5 ILT |
3520 | } |
3521 | ||
3522 | /* Link an a.out input BFD into the output file. */ | |
3523 | ||
3524 | static boolean | |
3525 | aout_link_input_bfd (finfo, input_bfd) | |
3526 | struct aout_final_link_info *finfo; | |
3527 | bfd *input_bfd; | |
3528 | { | |
3529 | bfd_size_type sym_count; | |
4c3721d5 ILT |
3530 | |
3531 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); | |
3532 | ||
e85e8bfe ILT |
3533 | /* If this is a dynamic object, it may need special handling. */ |
3534 | if ((input_bfd->flags & DYNAMIC) != 0 | |
3535 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
3536 | { | |
3537 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
3538 | (finfo->info, input_bfd)); | |
3539 | } | |
3540 | ||
4c3721d5 ILT |
3541 | /* Get the symbols. We probably have them already, unless |
3542 | finfo->info->keep_memory is false. */ | |
5c8444f8 | 3543 | if (! aout_get_external_symbols (input_bfd)) |
4c3721d5 ILT |
3544 | return false; |
3545 | ||
3546 | sym_count = obj_aout_external_sym_count (input_bfd); | |
4c3721d5 | 3547 | |
1afd2380 ILT |
3548 | /* Write out the symbols and get a map of the new indices. The map |
3549 | is placed into finfo->symbol_map. */ | |
3550 | if (! aout_link_write_symbols (finfo, input_bfd)) | |
3551 | return false; | |
4c3721d5 | 3552 | |
1afd2380 ILT |
3553 | /* Relocate and write out the sections. These functions use the |
3554 | symbol map created by aout_link_write_symbols. */ | |
4c3721d5 ILT |
3555 | if (! aout_link_input_section (finfo, input_bfd, |
3556 | obj_textsec (input_bfd), | |
3557 | &finfo->treloff, | |
1afd2380 | 3558 | exec_hdr (input_bfd)->a_trsize) |
4c3721d5 ILT |
3559 | || ! aout_link_input_section (finfo, input_bfd, |
3560 | obj_datasec (input_bfd), | |
3561 | &finfo->dreloff, | |
1afd2380 ILT |
3562 | exec_hdr (input_bfd)->a_drsize)) |
3563 | return false; | |
4c3721d5 ILT |
3564 | |
3565 | /* If we are not keeping memory, we don't need the symbols any | |
3566 | longer. We still need them if we are keeping memory, because the | |
3567 | strings in the hash table point into them. */ | |
3568 | if (! finfo->info->keep_memory) | |
3569 | { | |
3570 | if (! aout_link_free_symbols (input_bfd)) | |
1afd2380 | 3571 | return false; |
4c3721d5 ILT |
3572 | } |
3573 | ||
3574 | return true; | |
3575 | } | |
3576 | ||
3577 | /* Adjust and write out the symbols for an a.out file. Set the new | |
3578 | symbol indices into a symbol_map. */ | |
3579 | ||
3580 | static boolean | |
1afd2380 | 3581 | aout_link_write_symbols (finfo, input_bfd) |
4c3721d5 ILT |
3582 | struct aout_final_link_info *finfo; |
3583 | bfd *input_bfd; | |
4c3721d5 ILT |
3584 | { |
3585 | bfd *output_bfd; | |
3586 | bfd_size_type sym_count; | |
3587 | char *strings; | |
3588 | enum bfd_link_strip strip; | |
3589 | enum bfd_link_discard discard; | |
4c3721d5 | 3590 | struct external_nlist *outsym; |
d17fc4c9 | 3591 | bfd_size_type strtab_index; |
4c3721d5 ILT |
3592 | register struct external_nlist *sym; |
3593 | struct external_nlist *sym_end; | |
3594 | struct aout_link_hash_entry **sym_hash; | |
1afd2380 | 3595 | int *symbol_map; |
4c3721d5 | 3596 | boolean pass; |
53155af1 | 3597 | boolean skip_indirect; |
4c3721d5 ILT |
3598 | |
3599 | output_bfd = finfo->output_bfd; | |
3600 | sym_count = obj_aout_external_sym_count (input_bfd); | |
3601 | strings = obj_aout_external_strings (input_bfd); | |
3602 | strip = finfo->info->strip; | |
3603 | discard = finfo->info->discard; | |
1afd2380 | 3604 | outsym = finfo->output_syms; |
4c3721d5 ILT |
3605 | |
3606 | /* First write out a symbol for this object file, unless we are | |
3607 | discarding such symbols. */ | |
3608 | if (strip != strip_all | |
3609 | && (strip != strip_some | |
3610 | || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename, | |
3611 | false, false) != NULL) | |
3612 | && discard != discard_all) | |
3613 | { | |
3614 | bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type); | |
3615 | bfd_h_put_8 (output_bfd, 0, outsym->e_other); | |
3616 | bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc); | |
1afd2380 | 3617 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, |
d17fc4c9 ILT |
3618 | input_bfd->filename, false); |
3619 | if (strtab_index == (bfd_size_type) -1) | |
1afd2380 | 3620 | return false; |
d17fc4c9 | 3621 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); |
4c3721d5 | 3622 | PUT_WORD (output_bfd, |
2edc8357 ILT |
3623 | (bfd_get_section_vma (output_bfd, |
3624 | obj_textsec (input_bfd)->output_section) | |
3625 | + obj_textsec (input_bfd)->output_offset), | |
4c3721d5 ILT |
3626 | outsym->e_value); |
3627 | ++obj_aout_external_sym_count (output_bfd); | |
3628 | ++outsym; | |
3629 | } | |
3630 | ||
3631 | pass = false; | |
53155af1 | 3632 | skip_indirect = false; |
4c3721d5 ILT |
3633 | sym = obj_aout_external_syms (input_bfd); |
3634 | sym_end = sym + sym_count; | |
3635 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
1afd2380 | 3636 | symbol_map = finfo->symbol_map; |
4c3721d5 ILT |
3637 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) |
3638 | { | |
3639 | const char *name; | |
3640 | int type; | |
d6d6b18a | 3641 | struct aout_link_hash_entry *h; |
4c3721d5 ILT |
3642 | boolean skip; |
3643 | asection *symsec; | |
3644 | bfd_vma val = 0; | |
d17fc4c9 | 3645 | boolean copy; |
4c3721d5 ILT |
3646 | |
3647 | *symbol_map = -1; | |
3648 | ||
3649 | type = bfd_h_get_8 (input_bfd, sym->e_type); | |
3650 | name = strings + GET_WORD (input_bfd, sym->e_strx); | |
3651 | ||
d6d6b18a ILT |
3652 | h = NULL; |
3653 | ||
4c3721d5 ILT |
3654 | if (pass) |
3655 | { | |
53155af1 ILT |
3656 | /* Pass this symbol through. It is the target of an |
3657 | indirect or warning symbol. */ | |
4c3721d5 ILT |
3658 | val = GET_WORD (input_bfd, sym->e_value); |
3659 | pass = false; | |
3660 | } | |
53155af1 ILT |
3661 | else if (skip_indirect) |
3662 | { | |
3663 | /* Skip this symbol, which is the target of an indirect | |
3664 | symbol that we have changed to no longer be an indirect | |
3665 | symbol. */ | |
3666 | skip_indirect = false; | |
3667 | continue; | |
3668 | } | |
4c3721d5 ILT |
3669 | else |
3670 | { | |
53155af1 | 3671 | struct aout_link_hash_entry *hresolve; |
4c3721d5 ILT |
3672 | |
3673 | /* We have saved the hash table entry for this symbol, if | |
3674 | there is one. Note that we could just look it up again | |
3675 | in the hash table, provided we first check that it is an | |
3676 | external symbol. */ | |
3677 | h = *sym_hash; | |
3678 | ||
3a5b50f4 ILT |
3679 | /* If this is an indirect or warning symbol, then change |
3680 | hresolve to the base symbol. We also change *sym_hash so | |
3681 | that the relocation routines relocate against the real | |
3682 | symbol. */ | |
53155af1 ILT |
3683 | hresolve = h; |
3684 | if (h != (struct aout_link_hash_entry *) NULL | |
3a5b50f4 ILT |
3685 | && (h->root.type == bfd_link_hash_indirect |
3686 | || h->root.type == bfd_link_hash_warning)) | |
53155af1 ILT |
3687 | { |
3688 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; | |
118e8d1c ILT |
3689 | while (hresolve->root.type == bfd_link_hash_indirect |
3690 | || hresolve->root.type == bfd_link_hash_warning) | |
53155af1 ILT |
3691 | hresolve = ((struct aout_link_hash_entry *) |
3692 | hresolve->root.u.i.link); | |
3693 | *sym_hash = hresolve; | |
3694 | } | |
3695 | ||
4c3721d5 ILT |
3696 | /* If the symbol has already been written out, skip it. */ |
3697 | if (h != (struct aout_link_hash_entry *) NULL | |
e85e8bfe | 3698 | && h->root.type != bfd_link_hash_warning |
35fee729 | 3699 | && h->written) |
4c3721d5 | 3700 | { |
e85e8bfe ILT |
3701 | if ((type & N_TYPE) == N_INDR) |
3702 | skip_indirect = true; | |
4c3721d5 ILT |
3703 | *symbol_map = h->indx; |
3704 | continue; | |
3705 | } | |
3706 | ||
3707 | /* See if we are stripping this symbol. */ | |
3708 | skip = false; | |
3709 | switch (strip) | |
3710 | { | |
3711 | case strip_none: | |
3712 | break; | |
3713 | case strip_debugger: | |
3714 | if ((type & N_STAB) != 0) | |
3715 | skip = true; | |
3716 | break; | |
3717 | case strip_some: | |
3718 | if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false) | |
3719 | == NULL) | |
3720 | skip = true; | |
3721 | break; | |
3722 | case strip_all: | |
3723 | skip = true; | |
3724 | break; | |
3725 | } | |
3726 | if (skip) | |
3727 | { | |
3728 | if (h != (struct aout_link_hash_entry *) NULL) | |
35fee729 | 3729 | h->written = true; |
4c3721d5 ILT |
3730 | continue; |
3731 | } | |
3732 | ||
3733 | /* Get the value of the symbol. */ | |
4298e311 ILT |
3734 | if ((type & N_TYPE) == N_TEXT |
3735 | || type == N_WEAKT) | |
4c3721d5 | 3736 | symsec = obj_textsec (input_bfd); |
4298e311 ILT |
3737 | else if ((type & N_TYPE) == N_DATA |
3738 | || type == N_WEAKD) | |
4c3721d5 | 3739 | symsec = obj_datasec (input_bfd); |
4298e311 ILT |
3740 | else if ((type & N_TYPE) == N_BSS |
3741 | || type == N_WEAKB) | |
4c3721d5 | 3742 | symsec = obj_bsssec (input_bfd); |
4298e311 ILT |
3743 | else if ((type & N_TYPE) == N_ABS |
3744 | || type == N_WEAKA) | |
4587b578 | 3745 | symsec = bfd_abs_section_ptr; |
53155af1 ILT |
3746 | else if (((type & N_TYPE) == N_INDR |
3747 | && (hresolve == (struct aout_link_hash_entry *) NULL | |
3748 | || (hresolve->root.type != bfd_link_hash_defined | |
3749 | && hresolve->root.type != bfd_link_hash_common))) | |
4c3721d5 ILT |
3750 | || type == N_WARNING) |
3751 | { | |
53155af1 ILT |
3752 | /* Pass the next symbol through unchanged. The |
3753 | condition above for indirect symbols is so that if | |
3754 | the indirect symbol was defined, we output it with | |
3755 | the correct definition so the debugger will | |
3756 | understand it. */ | |
4c3721d5 ILT |
3757 | pass = true; |
3758 | val = GET_WORD (input_bfd, sym->e_value); | |
3759 | symsec = NULL; | |
3760 | } | |
3761 | else if ((type & N_STAB) != 0) | |
3762 | { | |
3763 | val = GET_WORD (input_bfd, sym->e_value); | |
3764 | symsec = NULL; | |
3765 | } | |
3766 | else | |
3767 | { | |
53155af1 ILT |
3768 | /* If we get here with an indirect symbol, it means that |
3769 | we are outputting it with a real definition. In such | |
3770 | a case we do not want to output the next symbol, | |
3771 | which is the target of the indirection. */ | |
3772 | if ((type & N_TYPE) == N_INDR) | |
3773 | skip_indirect = true; | |
3774 | ||
f4945271 ILT |
3775 | symsec = NULL; |
3776 | ||
53155af1 ILT |
3777 | /* We need to get the value from the hash table. We use |
3778 | hresolve so that if we have defined an indirect | |
3779 | symbol we output the final definition. */ | |
4c3721d5 | 3780 | if (h == (struct aout_link_hash_entry *) NULL) |
f4945271 ILT |
3781 | { |
3782 | switch (type & N_TYPE) | |
3783 | { | |
3784 | case N_SETT: | |
3785 | symsec = obj_textsec (input_bfd); | |
3786 | break; | |
3787 | case N_SETD: | |
3788 | symsec = obj_datasec (input_bfd); | |
3789 | break; | |
3790 | case N_SETB: | |
3791 | symsec = obj_bsssec (input_bfd); | |
3792 | break; | |
3793 | case N_SETA: | |
3794 | symsec = bfd_abs_section_ptr; | |
3795 | break; | |
3796 | default: | |
3797 | val = 0; | |
3798 | break; | |
3799 | } | |
3800 | } | |
53155af1 | 3801 | else if (hresolve->root.type == bfd_link_hash_defined) |
4c3721d5 | 3802 | { |
53155af1 | 3803 | asection *input_section; |
4c3721d5 ILT |
3804 | asection *output_section; |
3805 | ||
3806 | /* This case means a common symbol which was turned | |
3807 | into a defined symbol. */ | |
53155af1 ILT |
3808 | input_section = hresolve->root.u.def.section; |
3809 | output_section = input_section->output_section; | |
4587b578 | 3810 | BFD_ASSERT (bfd_is_abs_section (output_section) |
4c3721d5 | 3811 | || output_section->owner == output_bfd); |
53155af1 | 3812 | val = (hresolve->root.u.def.value |
4c3721d5 | 3813 | + bfd_get_section_vma (output_bfd, output_section) |
53155af1 | 3814 | + input_section->output_offset); |
4c3721d5 ILT |
3815 | |
3816 | /* Get the correct type based on the section. If | |
3817 | this is a constructed set, force it to be | |
3818 | globally visible. */ | |
3819 | if (type == N_SETT | |
3820 | || type == N_SETD | |
3821 | || type == N_SETB | |
3822 | || type == N_SETA) | |
3823 | type |= N_EXT; | |
3824 | ||
3825 | type &=~ N_TYPE; | |
3826 | ||
3827 | if (output_section == obj_textsec (output_bfd)) | |
3828 | type |= N_TEXT; | |
3829 | else if (output_section == obj_datasec (output_bfd)) | |
3830 | type |= N_DATA; | |
3831 | else if (output_section == obj_bsssec (output_bfd)) | |
3832 | type |= N_BSS; | |
3833 | else | |
3834 | type |= N_ABS; | |
3835 | } | |
53155af1 ILT |
3836 | else if (hresolve->root.type == bfd_link_hash_common) |
3837 | val = hresolve->root.u.c.size; | |
4298e311 ILT |
3838 | else if (hresolve->root.type == bfd_link_hash_weak) |
3839 | { | |
3840 | val = 0; | |
3841 | type = N_WEAKU; | |
3842 | } | |
4c3721d5 ILT |
3843 | else |
3844 | val = 0; | |
4c3721d5 ILT |
3845 | } |
3846 | if (symsec != (asection *) NULL) | |
3847 | val = (symsec->output_section->vma | |
3848 | + symsec->output_offset | |
3849 | + (GET_WORD (input_bfd, sym->e_value) | |
3850 | - symsec->vma)); | |
3851 | ||
3852 | /* If this is a global symbol set the written flag, and if | |
3853 | it is a local symbol see if we should discard it. */ | |
3854 | if (h != (struct aout_link_hash_entry *) NULL) | |
3855 | { | |
35fee729 | 3856 | h->written = true; |
4c3721d5 ILT |
3857 | h->indx = obj_aout_external_sym_count (output_bfd); |
3858 | } | |
f4945271 ILT |
3859 | else if ((type & N_TYPE) != N_SETT |
3860 | && (type & N_TYPE) != N_SETD | |
3861 | && (type & N_TYPE) != N_SETB | |
3862 | && (type & N_TYPE) != N_SETA) | |
4c3721d5 ILT |
3863 | { |
3864 | switch (discard) | |
3865 | { | |
3866 | case discard_none: | |
3867 | break; | |
3868 | case discard_l: | |
3869 | if (*name == *finfo->info->lprefix | |
3870 | && (finfo->info->lprefix_len == 1 | |
3871 | || strncmp (name, finfo->info->lprefix, | |
3872 | finfo->info->lprefix_len) == 0)) | |
3873 | skip = true; | |
3874 | break; | |
3875 | case discard_all: | |
3876 | skip = true; | |
3877 | break; | |
3878 | } | |
3879 | if (skip) | |
3880 | { | |
3881 | pass = false; | |
3882 | continue; | |
3883 | } | |
3884 | } | |
3885 | } | |
3886 | ||
3887 | /* Copy this symbol into the list of symbols we are going to | |
3888 | write out. */ | |
3889 | bfd_h_put_8 (output_bfd, type, outsym->e_type); | |
3890 | bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other), | |
3891 | outsym->e_other); | |
3892 | bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc), | |
3893 | outsym->e_desc); | |
d17fc4c9 | 3894 | copy = false; |
d6d6b18a ILT |
3895 | if (! finfo->info->keep_memory) |
3896 | { | |
3897 | /* name points into a string table which we are going to | |
3898 | free. If there is a hash table entry, use that string. | |
3899 | Otherwise, copy name into memory. */ | |
3900 | if (h != (struct aout_link_hash_entry *) NULL) | |
1afd2380 | 3901 | name = h->root.root.string; |
d6d6b18a | 3902 | else |
d17fc4c9 | 3903 | copy = true; |
d6d6b18a | 3904 | } |
1afd2380 | 3905 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, |
d17fc4c9 ILT |
3906 | name, copy); |
3907 | if (strtab_index == (bfd_size_type) -1) | |
1afd2380 | 3908 | return false; |
d17fc4c9 | 3909 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); |
4c3721d5 ILT |
3910 | PUT_WORD (output_bfd, val, outsym->e_value); |
3911 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
3912 | ++obj_aout_external_sym_count (output_bfd); | |
3913 | ++outsym; | |
3914 | } | |
3915 | ||
3916 | /* Write out the output symbols we have just constructed. */ | |
1afd2380 | 3917 | if (outsym > finfo->output_syms) |
4c3721d5 ILT |
3918 | { |
3919 | bfd_size_type outsym_count; | |
3920 | ||
3921 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0) | |
1afd2380 ILT |
3922 | return false; |
3923 | outsym_count = outsym - finfo->output_syms; | |
3924 | if (bfd_write ((PTR) finfo->output_syms, | |
3925 | (bfd_size_type) EXTERNAL_NLIST_SIZE, | |
4c3721d5 ILT |
3926 | (bfd_size_type) outsym_count, output_bfd) |
3927 | != outsym_count * EXTERNAL_NLIST_SIZE) | |
1afd2380 | 3928 | return false; |
4c3721d5 ILT |
3929 | finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE; |
3930 | } | |
3931 | ||
3932 | return true; | |
3933 | } | |
3934 | ||
3935 | /* Write out a symbol that was not associated with an a.out input | |
3936 | object. */ | |
3937 | ||
3938 | static boolean | |
3939 | aout_link_write_other_symbol (h, data) | |
3940 | struct aout_link_hash_entry *h; | |
3941 | PTR data; | |
3942 | { | |
3943 | struct aout_final_link_info *finfo = (struct aout_final_link_info *) data; | |
3944 | bfd *output_bfd; | |
3945 | int type; | |
3946 | bfd_vma val; | |
3947 | struct external_nlist outsym; | |
d17fc4c9 | 3948 | bfd_size_type indx; |
4c3721d5 | 3949 | |
e85e8bfe ILT |
3950 | output_bfd = finfo->output_bfd; |
3951 | ||
3952 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) | |
3953 | { | |
3954 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) | |
3955 | (output_bfd, finfo->info, h))) | |
3956 | { | |
3957 | /* FIXME: No way to handle errors. */ | |
3958 | abort (); | |
3959 | } | |
3960 | } | |
3961 | ||
35fee729 | 3962 | if (h->written) |
4c3721d5 ILT |
3963 | return true; |
3964 | ||
35fee729 | 3965 | h->written = true; |
9783e04a DM |
3966 | |
3967 | if (finfo->info->strip == strip_all | |
3968 | || (finfo->info->strip == strip_some | |
3969 | && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string, | |
3970 | false, false) == NULL)) | |
3971 | return true; | |
3972 | ||
4c3721d5 ILT |
3973 | switch (h->root.type) |
3974 | { | |
3975 | default: | |
4c3721d5 ILT |
3976 | abort (); |
3977 | /* Avoid variable not initialized warnings. */ | |
3978 | return true; | |
f4945271 ILT |
3979 | case bfd_link_hash_new: |
3980 | /* This can happen for set symbols when sets are not being | |
3981 | built. */ | |
3982 | return true; | |
4c3721d5 ILT |
3983 | case bfd_link_hash_undefined: |
3984 | type = N_UNDF | N_EXT; | |
3985 | val = 0; | |
3986 | break; | |
3987 | case bfd_link_hash_defined: | |
3988 | { | |
3989 | asection *sec; | |
3990 | ||
4f019d04 | 3991 | sec = h->root.u.def.section->output_section; |
4587b578 | 3992 | BFD_ASSERT (bfd_is_abs_section (sec) |
4c3721d5 ILT |
3993 | || sec->owner == output_bfd); |
3994 | if (sec == obj_textsec (output_bfd)) | |
3995 | type = N_TEXT | N_EXT; | |
3996 | else if (sec == obj_datasec (output_bfd)) | |
3997 | type = N_DATA | N_EXT; | |
3998 | else if (sec == obj_bsssec (output_bfd)) | |
3999 | type = N_BSS | N_EXT; | |
4000 | else | |
4001 | type = N_ABS | N_EXT; | |
4002 | val = (h->root.u.def.value | |
4f019d04 ILT |
4003 | + sec->vma |
4004 | + h->root.u.def.section->output_offset); | |
4c3721d5 ILT |
4005 | } |
4006 | break; | |
4007 | case bfd_link_hash_common: | |
4008 | type = N_UNDF | N_EXT; | |
4009 | val = h->root.u.c.size; | |
4010 | break; | |
4298e311 ILT |
4011 | case bfd_link_hash_weak: |
4012 | type = N_WEAKU; | |
4013 | val = 0; | |
4c3721d5 ILT |
4014 | case bfd_link_hash_indirect: |
4015 | case bfd_link_hash_warning: | |
4016 | /* FIXME: Ignore these for now. The circumstances under which | |
4017 | they should be written out are not clear to me. */ | |
4018 | return true; | |
4019 | } | |
4020 | ||
4021 | bfd_h_put_8 (output_bfd, type, outsym.e_type); | |
4022 | bfd_h_put_8 (output_bfd, 0, outsym.e_other); | |
4023 | bfd_h_put_16 (output_bfd, 0, outsym.e_desc); | |
1afd2380 | 4024 | indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string, |
d17fc4c9 ILT |
4025 | false); |
4026 | if (indx == (bfd_size_type) -1) | |
4027 | { | |
4028 | /* FIXME: No way to handle errors. */ | |
4029 | abort (); | |
4030 | } | |
4031 | PUT_WORD (output_bfd, indx, outsym.e_strx); | |
4c3721d5 ILT |
4032 | PUT_WORD (output_bfd, val, outsym.e_value); |
4033 | ||
4034 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0 | |
4035 | || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE, | |
4036 | (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE) | |
4037 | { | |
4038 | /* FIXME: No way to handle errors. */ | |
4039 | abort (); | |
4040 | } | |
4041 | ||
4042 | finfo->symoff += EXTERNAL_NLIST_SIZE; | |
4043 | h->indx = obj_aout_external_sym_count (output_bfd); | |
4044 | ++obj_aout_external_sym_count (output_bfd); | |
4045 | ||
4046 | return true; | |
4047 | } | |
4048 | ||
4049 | /* Link an a.out section into the output file. */ | |
4050 | ||
4051 | static boolean | |
4052 | aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr, | |
1afd2380 | 4053 | rel_size) |
4c3721d5 ILT |
4054 | struct aout_final_link_info *finfo; |
4055 | bfd *input_bfd; | |
4056 | asection *input_section; | |
4057 | file_ptr *reloff_ptr; | |
4058 | bfd_size_type rel_size; | |
4c3721d5 ILT |
4059 | { |
4060 | bfd_size_type input_size; | |
e85e8bfe | 4061 | PTR relocs; |
4c3721d5 ILT |
4062 | |
4063 | /* Get the section contents. */ | |
4064 | input_size = bfd_section_size (input_bfd, input_section); | |
1afd2380 ILT |
4065 | if (! bfd_get_section_contents (input_bfd, input_section, |
4066 | (PTR) finfo->contents, | |
4c3721d5 | 4067 | (file_ptr) 0, input_size)) |
1afd2380 | 4068 | return false; |
4c3721d5 | 4069 | |
e85e8bfe ILT |
4070 | /* Read in the relocs if we haven't already done it. */ |
4071 | if (aout_section_data (input_section) != NULL | |
4072 | && aout_section_data (input_section)->relocs != NULL) | |
4073 | relocs = aout_section_data (input_section)->relocs; | |
4074 | else | |
80425e6c | 4075 | { |
1afd2380 | 4076 | relocs = finfo->relocs; |
e85e8bfe ILT |
4077 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 |
4078 | || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size) | |
1afd2380 | 4079 | return false; |
80425e6c | 4080 | } |
4c3721d5 ILT |
4081 | |
4082 | /* Relocate the section contents. */ | |
4083 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) | |
4084 | { | |
4085 | if (! aout_link_input_section_std (finfo, input_bfd, input_section, | |
4086 | (struct reloc_std_external *) relocs, | |
1afd2380 ILT |
4087 | rel_size, finfo->contents)) |
4088 | return false; | |
4c3721d5 ILT |
4089 | } |
4090 | else | |
4091 | { | |
4092 | if (! aout_link_input_section_ext (finfo, input_bfd, input_section, | |
4093 | (struct reloc_ext_external *) relocs, | |
1afd2380 ILT |
4094 | rel_size, finfo->contents)) |
4095 | return false; | |
4c3721d5 ILT |
4096 | } |
4097 | ||
4098 | /* Write out the section contents. */ | |
4099 | if (! bfd_set_section_contents (finfo->output_bfd, | |
4100 | input_section->output_section, | |
1afd2380 | 4101 | (PTR) finfo->contents, |
728472f1 | 4102 | input_section->output_offset, |
4c3721d5 | 4103 | input_size)) |
1afd2380 | 4104 | return false; |
4c3721d5 ILT |
4105 | |
4106 | /* If we are producing relocateable output, the relocs were | |
4107 | modified, and we now write them out. */ | |
4108 | if (finfo->info->relocateable) | |
4109 | { | |
4110 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) | |
1afd2380 | 4111 | return false; |
4c3721d5 ILT |
4112 | if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd) |
4113 | != rel_size) | |
1afd2380 | 4114 | return false; |
4c3721d5 ILT |
4115 | *reloff_ptr += rel_size; |
4116 | ||
4117 | /* Assert that the relocs have not run into the symbols, and | |
4118 | that if these are the text relocs they have not run into the | |
4119 | data relocs. */ | |
4120 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
4121 | && (reloff_ptr != &finfo->treloff | |
4122 | || (*reloff_ptr | |
4123 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
4124 | } | |
4125 | ||
4126 | return true; | |
4127 | } | |
4128 | ||
4129 | /* Get the section corresponding to a reloc index. */ | |
4130 | ||
4131 | static INLINE asection * | |
4132 | aout_reloc_index_to_section (abfd, indx) | |
4133 | bfd *abfd; | |
4134 | int indx; | |
4135 | { | |
4136 | switch (indx & N_TYPE) | |
4137 | { | |
4138 | case N_TEXT: | |
4139 | return obj_textsec (abfd); | |
4140 | case N_DATA: | |
4141 | return obj_datasec (abfd); | |
4142 | case N_BSS: | |
4143 | return obj_bsssec (abfd); | |
4144 | case N_ABS: | |
fa2302b8 | 4145 | case N_UNDF: |
4587b578 | 4146 | return bfd_abs_section_ptr; |
4c3721d5 ILT |
4147 | default: |
4148 | abort (); | |
4149 | } | |
4150 | } | |
4151 | ||
4152 | /* Relocate an a.out section using standard a.out relocs. */ | |
4153 | ||
4154 | static boolean | |
4155 | aout_link_input_section_std (finfo, input_bfd, input_section, relocs, | |
1afd2380 | 4156 | rel_size, contents) |
4c3721d5 ILT |
4157 | struct aout_final_link_info *finfo; |
4158 | bfd *input_bfd; | |
4159 | asection *input_section; | |
4160 | struct reloc_std_external *relocs; | |
4161 | bfd_size_type rel_size; | |
4162 | bfd_byte *contents; | |
4c3721d5 | 4163 | { |
e85e8bfe ILT |
4164 | boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *, |
4165 | bfd *, asection *, | |
4166 | struct aout_link_hash_entry *, | |
4167 | PTR, boolean *)); | |
4c3721d5 ILT |
4168 | bfd *output_bfd; |
4169 | boolean relocateable; | |
4170 | struct external_nlist *syms; | |
4171 | char *strings; | |
4172 | struct aout_link_hash_entry **sym_hashes; | |
1afd2380 | 4173 | int *symbol_map; |
4c3721d5 ILT |
4174 | bfd_size_type reloc_count; |
4175 | register struct reloc_std_external *rel; | |
4176 | struct reloc_std_external *rel_end; | |
4177 | ||
4178 | output_bfd = finfo->output_bfd; | |
e85e8bfe | 4179 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
4c3721d5 ILT |
4180 | |
4181 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE); | |
4182 | BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p | |
4183 | == output_bfd->xvec->header_byteorder_big_p); | |
4184 | ||
4185 | relocateable = finfo->info->relocateable; | |
4186 | syms = obj_aout_external_syms (input_bfd); | |
4187 | strings = obj_aout_external_strings (input_bfd); | |
4188 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
1afd2380 | 4189 | symbol_map = finfo->symbol_map; |
4c3721d5 ILT |
4190 | |
4191 | reloc_count = rel_size / RELOC_STD_SIZE; | |
4192 | rel = relocs; | |
4193 | rel_end = rel + reloc_count; | |
4194 | for (; rel < rel_end; rel++) | |
4195 | { | |
4196 | bfd_vma r_addr; | |
4197 | int r_index; | |
4198 | int r_extern; | |
4199 | int r_pcrel; | |
4200 | int r_baserel; | |
4201 | int r_jmptable; | |
4202 | int r_relative; | |
4203 | int r_length; | |
4204 | int howto_idx; | |
f42fe159 | 4205 | reloc_howto_type *howto; |
4c3721d5 ILT |
4206 | bfd_vma relocation; |
4207 | bfd_reloc_status_type r; | |
4208 | ||
4209 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
4210 | ||
f42fe159 ILT |
4211 | #ifdef MY_reloc_howto |
4212 | howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel); | |
4213 | #else | |
4c3721d5 ILT |
4214 | if (input_bfd->xvec->header_byteorder_big_p) |
4215 | { | |
4216 | r_index = ((rel->r_index[0] << 16) | |
4217 | | (rel->r_index[1] << 8) | |
4218 | | rel->r_index[2]); | |
4219 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
4220 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
4221 | r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
4222 | r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
4223 | r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
4224 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
4225 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
4226 | } | |
4227 | else | |
4228 | { | |
4229 | r_index = ((rel->r_index[2] << 16) | |
4230 | | (rel->r_index[1] << 8) | |
4231 | | rel->r_index[0]); | |
4232 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
4233 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
4234 | r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
4235 | r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
4236 | r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
4237 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
4238 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
4239 | } | |
4240 | ||
cb9461ff JK |
4241 | howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel |
4242 | + 16 * r_jmptable + 32 * r_relative; | |
4c3721d5 | 4243 | BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std)); |
f42fe159 ILT |
4244 | howto = howto_table_std + howto_idx; |
4245 | #endif | |
4c3721d5 ILT |
4246 | |
4247 | if (relocateable) | |
4248 | { | |
4249 | /* We are generating a relocateable output file, and must | |
4250 | modify the reloc accordingly. */ | |
4251 | if (r_extern) | |
4252 | { | |
4253 | struct aout_link_hash_entry *h; | |
4254 | ||
4255 | /* If we know the symbol this relocation is against, | |
4256 | convert it into a relocation against a section. This | |
4257 | is what the native linker does. */ | |
4258 | h = sym_hashes[r_index]; | |
4259 | if (h != (struct aout_link_hash_entry *) NULL | |
4260 | && h->root.type == bfd_link_hash_defined) | |
4261 | { | |
4262 | asection *output_section; | |
4263 | ||
4264 | /* Change the r_extern value. */ | |
4265 | if (output_bfd->xvec->header_byteorder_big_p) | |
4266 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG; | |
4267 | else | |
4268 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE; | |
4269 | ||
4270 | /* Compute a new r_index. */ | |
4271 | output_section = h->root.u.def.section->output_section; | |
4272 | if (output_section == obj_textsec (output_bfd)) | |
4273 | r_index = N_TEXT; | |
4274 | else if (output_section == obj_datasec (output_bfd)) | |
4275 | r_index = N_DATA; | |
4276 | else if (output_section == obj_bsssec (output_bfd)) | |
4277 | r_index = N_BSS; | |
4278 | else | |
4279 | r_index = N_ABS; | |
4280 | ||
4281 | /* Add the symbol value and the section VMA to the | |
4282 | addend stored in the contents. */ | |
4283 | relocation = (h->root.u.def.value | |
4284 | + output_section->vma | |
4285 | + h->root.u.def.section->output_offset); | |
4286 | } | |
4287 | else | |
4288 | { | |
4289 | /* We must change r_index according to the symbol | |
4290 | map. */ | |
4291 | r_index = symbol_map[r_index]; | |
4292 | ||
4293 | if (r_index == -1) | |
4294 | { | |
4295 | const char *name; | |
4296 | ||
4297 | name = strings + GET_WORD (input_bfd, | |
4298 | syms[r_index].e_strx); | |
4299 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
4300 | (finfo->info, name, input_bfd, input_section, | |
4301 | r_addr))) | |
4302 | return false; | |
4303 | r_index = 0; | |
4304 | } | |
4305 | ||
4306 | relocation = 0; | |
4307 | } | |
4308 | ||
4309 | /* Write out the new r_index value. */ | |
4310 | if (output_bfd->xvec->header_byteorder_big_p) | |
4311 | { | |
4312 | rel->r_index[0] = r_index >> 16; | |
4313 | rel->r_index[1] = r_index >> 8; | |
4314 | rel->r_index[2] = r_index; | |
4315 | } | |
4316 | else | |
4317 | { | |
4318 | rel->r_index[2] = r_index >> 16; | |
4319 | rel->r_index[1] = r_index >> 8; | |
4320 | rel->r_index[0] = r_index; | |
4321 | } | |
4322 | } | |
4323 | else | |
4324 | { | |
4325 | asection *section; | |
4326 | ||
4327 | /* This is a relocation against a section. We must | |
4328 | adjust by the amount that the section moved. */ | |
4329 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4330 | relocation = (section->output_section->vma | |
4331 | + section->output_offset | |
4332 | - section->vma); | |
4333 | } | |
4334 | ||
4335 | /* Change the address of the relocation. */ | |
4336 | PUT_WORD (output_bfd, | |
4337 | r_addr + input_section->output_offset, | |
4338 | rel->r_address); | |
4339 | ||
4340 | /* Adjust a PC relative relocation by removing the reference | |
e68de5d5 ILT |
4341 | to the original address in the section and including the |
4342 | reference to the new address. */ | |
4c3721d5 | 4343 | if (r_pcrel) |
e68de5d5 ILT |
4344 | relocation -= (input_section->output_section->vma |
4345 | + input_section->output_offset | |
4346 | - input_section->vma); | |
4c3721d5 ILT |
4347 | |
4348 | if (relocation == 0) | |
4349 | r = bfd_reloc_ok; | |
4350 | else | |
f42fe159 | 4351 | r = _bfd_relocate_contents (howto, |
4c3721d5 ILT |
4352 | input_bfd, relocation, |
4353 | contents + r_addr); | |
4354 | } | |
4355 | else | |
4356 | { | |
4357 | /* We are generating an executable, and must do a full | |
4358 | relocation. */ | |
4359 | if (r_extern) | |
4360 | { | |
4361 | struct aout_link_hash_entry *h; | |
4362 | ||
4363 | h = sym_hashes[r_index]; | |
e85e8bfe ILT |
4364 | |
4365 | if (check_dynamic_reloc != NULL) | |
4366 | { | |
4367 | boolean skip; | |
4368 | ||
4369 | if (! ((*check_dynamic_reloc) | |
4370 | (finfo->info, input_bfd, input_section, h, | |
4371 | (PTR) rel, &skip))) | |
4372 | return false; | |
4373 | if (skip) | |
4374 | continue; | |
4375 | } | |
4376 | ||
4c3721d5 ILT |
4377 | if (h != (struct aout_link_hash_entry *) NULL |
4378 | && h->root.type == bfd_link_hash_defined) | |
4379 | { | |
4380 | relocation = (h->root.u.def.value | |
4381 | + h->root.u.def.section->output_section->vma | |
4382 | + h->root.u.def.section->output_offset); | |
4383 | } | |
4298e311 ILT |
4384 | else if (h != (struct aout_link_hash_entry *) NULL |
4385 | && h->root.type == bfd_link_hash_weak) | |
4386 | relocation = 0; | |
4c3721d5 ILT |
4387 | else |
4388 | { | |
4389 | const char *name; | |
4390 | ||
4391 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
4392 | if (! ((*finfo->info->callbacks->undefined_symbol) | |
4393 | (finfo->info, name, input_bfd, input_section, | |
4394 | r_addr))) | |
4395 | return false; | |
4396 | relocation = 0; | |
4397 | } | |
4398 | } | |
4399 | else | |
4400 | { | |
4401 | asection *section; | |
4402 | ||
4403 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4404 | relocation = (section->output_section->vma | |
4405 | + section->output_offset | |
4406 | - section->vma); | |
e68de5d5 ILT |
4407 | if (r_pcrel) |
4408 | relocation += input_section->vma; | |
4c3721d5 ILT |
4409 | } |
4410 | ||
f42fe159 | 4411 | r = _bfd_final_link_relocate (howto, |
4c3721d5 ILT |
4412 | input_bfd, input_section, |
4413 | contents, r_addr, relocation, | |
4414 | (bfd_vma) 0); | |
4415 | } | |
4416 | ||
4417 | if (r != bfd_reloc_ok) | |
4418 | { | |
4419 | switch (r) | |
4420 | { | |
4421 | default: | |
4422 | case bfd_reloc_outofrange: | |
4423 | abort (); | |
4424 | case bfd_reloc_overflow: | |
4991ebb9 ILT |
4425 | { |
4426 | const char *name; | |
4427 | ||
4428 | if (r_extern) | |
4429 | name = strings + GET_WORD (input_bfd, | |
4430 | syms[r_index].e_strx); | |
4431 | else | |
4432 | { | |
4433 | asection *s; | |
4434 | ||
4435 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
4436 | name = bfd_section_name (input_bfd, s); | |
4437 | } | |
4438 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
f42fe159 | 4439 | (finfo->info, name, howto->name, |
4991ebb9 ILT |
4440 | (bfd_vma) 0, input_bfd, input_section, r_addr))) |
4441 | return false; | |
4442 | } | |
4c3721d5 ILT |
4443 | break; |
4444 | } | |
4445 | } | |
4446 | } | |
4447 | ||
4448 | return true; | |
4449 | } | |
4450 | ||
4451 | /* Relocate an a.out section using extended a.out relocs. */ | |
4452 | ||
4453 | static boolean | |
4454 | aout_link_input_section_ext (finfo, input_bfd, input_section, relocs, | |
1afd2380 | 4455 | rel_size, contents) |
4c3721d5 ILT |
4456 | struct aout_final_link_info *finfo; |
4457 | bfd *input_bfd; | |
4458 | asection *input_section; | |
4459 | struct reloc_ext_external *relocs; | |
4460 | bfd_size_type rel_size; | |
4461 | bfd_byte *contents; | |
4c3721d5 | 4462 | { |
e85e8bfe ILT |
4463 | boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *, |
4464 | bfd *, asection *, | |
4465 | struct aout_link_hash_entry *, | |
4466 | PTR, boolean *)); | |
4c3721d5 ILT |
4467 | bfd *output_bfd; |
4468 | boolean relocateable; | |
4469 | struct external_nlist *syms; | |
4470 | char *strings; | |
4471 | struct aout_link_hash_entry **sym_hashes; | |
1afd2380 | 4472 | int *symbol_map; |
4c3721d5 ILT |
4473 | bfd_size_type reloc_count; |
4474 | register struct reloc_ext_external *rel; | |
4475 | struct reloc_ext_external *rel_end; | |
4476 | ||
4477 | output_bfd = finfo->output_bfd; | |
e85e8bfe | 4478 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
4c3721d5 ILT |
4479 | |
4480 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE); | |
4481 | BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p | |
4482 | == output_bfd->xvec->header_byteorder_big_p); | |
4483 | ||
4484 | relocateable = finfo->info->relocateable; | |
4485 | syms = obj_aout_external_syms (input_bfd); | |
4486 | strings = obj_aout_external_strings (input_bfd); | |
4487 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
1afd2380 | 4488 | symbol_map = finfo->symbol_map; |
4c3721d5 ILT |
4489 | |
4490 | reloc_count = rel_size / RELOC_EXT_SIZE; | |
4491 | rel = relocs; | |
4492 | rel_end = rel + reloc_count; | |
4493 | for (; rel < rel_end; rel++) | |
4494 | { | |
4495 | bfd_vma r_addr; | |
4496 | int r_index; | |
4497 | int r_extern; | |
4498 | int r_type; | |
4499 | bfd_vma r_addend; | |
4500 | bfd_vma relocation; | |
4501 | ||
4502 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
4503 | ||
4504 | if (input_bfd->xvec->header_byteorder_big_p) | |
4505 | { | |
4506 | r_index = ((rel->r_index[0] << 16) | |
4507 | | (rel->r_index[1] << 8) | |
4508 | | rel->r_index[2]); | |
4509 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
4510 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
4511 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
4512 | } | |
4513 | else | |
4514 | { | |
4515 | r_index = ((rel->r_index[2] << 16) | |
4516 | | (rel->r_index[1] << 8) | |
4517 | | rel->r_index[0]); | |
4518 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
4519 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
4520 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
4521 | } | |
4522 | ||
4523 | r_addend = GET_SWORD (input_bfd, rel->r_addend); | |
4524 | ||
e68de5d5 ILT |
4525 | BFD_ASSERT (r_type >= 0 |
4526 | && r_type < TABLE_SIZE (howto_table_ext)); | |
4527 | ||
4c3721d5 ILT |
4528 | if (relocateable) |
4529 | { | |
4530 | /* We are generating a relocateable output file, and must | |
4531 | modify the reloc accordingly. */ | |
4532 | if (r_extern) | |
4533 | { | |
4534 | struct aout_link_hash_entry *h; | |
4535 | ||
4536 | /* If we know the symbol this relocation is against, | |
4537 | convert it into a relocation against a section. This | |
4538 | is what the native linker does. */ | |
4539 | h = sym_hashes[r_index]; | |
4540 | if (h != (struct aout_link_hash_entry *) NULL | |
4541 | && h->root.type == bfd_link_hash_defined) | |
4542 | { | |
4543 | asection *output_section; | |
4544 | ||
4545 | /* Change the r_extern value. */ | |
4546 | if (output_bfd->xvec->header_byteorder_big_p) | |
4547 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG; | |
4548 | else | |
4549 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE; | |
4550 | ||
4551 | /* Compute a new r_index. */ | |
4552 | output_section = h->root.u.def.section->output_section; | |
4553 | if (output_section == obj_textsec (output_bfd)) | |
4554 | r_index = N_TEXT; | |
4555 | else if (output_section == obj_datasec (output_bfd)) | |
4556 | r_index = N_DATA; | |
4557 | else if (output_section == obj_bsssec (output_bfd)) | |
4558 | r_index = N_BSS; | |
4559 | else | |
4560 | r_index = N_ABS; | |
4561 | ||
4562 | /* Add the symbol value and the section VMA to the | |
4563 | addend. */ | |
4564 | relocation = (h->root.u.def.value | |
4565 | + output_section->vma | |
4566 | + h->root.u.def.section->output_offset); | |
e68de5d5 ILT |
4567 | |
4568 | /* Now RELOCATION is the VMA of the final | |
4569 | destination. If this is a PC relative reloc, | |
4570 | then ADDEND is the negative of the source VMA. | |
4571 | We want to set ADDEND to the difference between | |
4572 | the destination VMA and the source VMA, which | |
4573 | means we must adjust RELOCATION by the change in | |
4574 | the source VMA. This is done below. */ | |
4c3721d5 ILT |
4575 | } |
4576 | else | |
4577 | { | |
4578 | /* We must change r_index according to the symbol | |
4579 | map. */ | |
4580 | r_index = symbol_map[r_index]; | |
4581 | ||
4582 | if (r_index == -1) | |
4583 | { | |
4584 | const char *name; | |
4585 | ||
4586 | name = (strings | |
4587 | + GET_WORD (input_bfd, syms[r_index].e_strx)); | |
4588 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
4589 | (finfo->info, name, input_bfd, input_section, | |
4590 | r_addr))) | |
4591 | return false; | |
4592 | r_index = 0; | |
4593 | } | |
4594 | ||
4595 | relocation = 0; | |
e68de5d5 ILT |
4596 | |
4597 | /* If this is a PC relative reloc, then the addend | |
4598 | is the negative of the source VMA. We must | |
4599 | adjust it by the change in the source VMA. This | |
4600 | is done below. */ | |
4c3721d5 ILT |
4601 | } |
4602 | ||
4603 | /* Write out the new r_index value. */ | |
4604 | if (output_bfd->xvec->header_byteorder_big_p) | |
4605 | { | |
4606 | rel->r_index[0] = r_index >> 16; | |
4607 | rel->r_index[1] = r_index >> 8; | |
4608 | rel->r_index[2] = r_index; | |
4609 | } | |
4610 | else | |
4611 | { | |
4612 | rel->r_index[2] = r_index >> 16; | |
4613 | rel->r_index[1] = r_index >> 8; | |
4614 | rel->r_index[0] = r_index; | |
4615 | } | |
4616 | } | |
4617 | else | |
4618 | { | |
4619 | asection *section; | |
4620 | ||
4621 | /* This is a relocation against a section. We must | |
4622 | adjust by the amount that the section moved. */ | |
4623 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4624 | relocation = (section->output_section->vma | |
4625 | + section->output_offset | |
4626 | - section->vma); | |
4c3721d5 | 4627 | |
e68de5d5 ILT |
4628 | /* If this is a PC relative reloc, then the addend is |
4629 | the difference in VMA between the destination and the | |
4630 | source. We have just adjusted for the change in VMA | |
4631 | of the destination, so we must also adjust by the | |
4632 | change in VMA of the source. This is done below. */ | |
4c3721d5 ILT |
4633 | } |
4634 | ||
e68de5d5 ILT |
4635 | /* As described above, we must always adjust a PC relative |
4636 | reloc by the change in VMA of the source. */ | |
4637 | if (howto_table_ext[r_type].pc_relative) | |
4638 | relocation -= (input_section->output_section->vma | |
4639 | + input_section->output_offset | |
4640 | - input_section->vma); | |
4641 | ||
4c3721d5 ILT |
4642 | /* Change the addend if necessary. */ |
4643 | if (relocation != 0) | |
4644 | PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend); | |
4645 | ||
4646 | /* Change the address of the relocation. */ | |
4647 | PUT_WORD (output_bfd, | |
4648 | r_addr + input_section->output_offset, | |
4649 | rel->r_address); | |
4650 | } | |
4651 | else | |
4652 | { | |
4653 | bfd_reloc_status_type r; | |
4654 | ||
4655 | /* We are generating an executable, and must do a full | |
4656 | relocation. */ | |
4657 | if (r_extern) | |
4658 | { | |
4659 | struct aout_link_hash_entry *h; | |
4660 | ||
4661 | h = sym_hashes[r_index]; | |
e85e8bfe ILT |
4662 | |
4663 | if (check_dynamic_reloc != NULL) | |
4664 | { | |
4665 | boolean skip; | |
4666 | ||
4667 | if (! ((*check_dynamic_reloc) | |
4668 | (finfo->info, input_bfd, input_section, h, | |
4669 | (PTR) rel, &skip))) | |
4670 | return false; | |
4671 | if (skip) | |
4672 | continue; | |
4673 | } | |
4674 | ||
4c3721d5 ILT |
4675 | if (h != (struct aout_link_hash_entry *) NULL |
4676 | && h->root.type == bfd_link_hash_defined) | |
4677 | { | |
4678 | relocation = (h->root.u.def.value | |
4679 | + h->root.u.def.section->output_section->vma | |
4680 | + h->root.u.def.section->output_offset); | |
4681 | } | |
4298e311 ILT |
4682 | else if (h != (struct aout_link_hash_entry *) NULL |
4683 | && h->root.type == bfd_link_hash_weak) | |
4684 | relocation = 0; | |
4c3721d5 ILT |
4685 | else |
4686 | { | |
4687 | const char *name; | |
4688 | ||
4689 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
4690 | if (! ((*finfo->info->callbacks->undefined_symbol) | |
4691 | (finfo->info, name, input_bfd, input_section, | |
4692 | r_addr))) | |
4693 | return false; | |
4694 | relocation = 0; | |
4695 | } | |
4696 | } | |
4697 | else | |
4698 | { | |
4699 | asection *section; | |
4700 | ||
4701 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
e68de5d5 ILT |
4702 | |
4703 | /* If this is a PC relative reloc, then R_ADDEND is the | |
4704 | difference between the two vmas, or | |
4705 | old_dest_sec + old_dest_off - (old_src_sec + old_src_off) | |
4706 | where | |
4707 | old_dest_sec == section->vma | |
4708 | and | |
4709 | old_src_sec == input_section->vma | |
4710 | and | |
4711 | old_src_off == r_addr | |
4712 | ||
4713 | _bfd_final_link_relocate expects RELOCATION + | |
4714 | R_ADDEND to be the VMA of the destination minus | |
4715 | r_addr (the minus r_addr is because this relocation | |
4716 | is not pcrel_offset, which is a bit confusing and | |
4717 | should, perhaps, be changed), or | |
4718 | new_dest_sec | |
4719 | where | |
4720 | new_dest_sec == output_section->vma + output_offset | |
4721 | We arrange for this to happen by setting RELOCATION to | |
4722 | new_dest_sec + old_src_sec - old_dest_sec | |
4723 | ||
4724 | If this is not a PC relative reloc, then R_ADDEND is | |
4725 | simply the VMA of the destination, so we set | |
4726 | RELOCATION to the change in the destination VMA, or | |
4727 | new_dest_sec - old_dest_sec | |
4728 | */ | |
4c3721d5 ILT |
4729 | relocation = (section->output_section->vma |
4730 | + section->output_offset | |
4731 | - section->vma); | |
e68de5d5 ILT |
4732 | if (howto_table_ext[r_type].pc_relative) |
4733 | relocation += input_section->vma; | |
4c3721d5 ILT |
4734 | } |
4735 | ||
4c3721d5 ILT |
4736 | r = _bfd_final_link_relocate (howto_table_ext + r_type, |
4737 | input_bfd, input_section, | |
4738 | contents, r_addr, relocation, | |
4739 | r_addend); | |
4740 | if (r != bfd_reloc_ok) | |
4741 | { | |
4742 | switch (r) | |
4743 | { | |
4744 | default: | |
4745 | case bfd_reloc_outofrange: | |
4746 | abort (); | |
4747 | case bfd_reloc_overflow: | |
4991ebb9 ILT |
4748 | { |
4749 | const char *name; | |
4750 | ||
4751 | if (r_extern) | |
4752 | name = strings + GET_WORD (input_bfd, | |
4753 | syms[r_index].e_strx); | |
4754 | else | |
4755 | { | |
4756 | asection *s; | |
4757 | ||
4758 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
4759 | name = bfd_section_name (input_bfd, s); | |
4760 | } | |
4761 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
4762 | (finfo->info, name, howto_table_ext[r_type].name, | |
4763 | r_addend, input_bfd, input_section, r_addr))) | |
4764 | return false; | |
4765 | } | |
4c3721d5 ILT |
4766 | break; |
4767 | } | |
4768 | } | |
4769 | } | |
4770 | } | |
4771 | ||
4772 | return true; | |
4773 | } | |
ec099b4b ILT |
4774 | |
4775 | /* Handle a link order which is supposed to generate a reloc. */ | |
4776 | ||
4777 | static boolean | |
4778 | aout_link_reloc_link_order (finfo, o, p) | |
4779 | struct aout_final_link_info *finfo; | |
4780 | asection *o; | |
4781 | struct bfd_link_order *p; | |
4782 | { | |
4783 | struct bfd_link_order_reloc *pr; | |
4784 | int r_index; | |
4785 | int r_extern; | |
4786 | const reloc_howto_type *howto; | |
4787 | file_ptr *reloff_ptr; | |
4788 | struct reloc_std_external srel; | |
4789 | struct reloc_ext_external erel; | |
4790 | PTR rel_ptr; | |
4791 | ||
4792 | pr = p->u.reloc.p; | |
4793 | ||
4794 | if (p->type == bfd_section_reloc_link_order) | |
4795 | { | |
4796 | r_extern = 0; | |
4587b578 | 4797 | if (bfd_is_abs_section (pr->u.section)) |
ec099b4b ILT |
4798 | r_index = N_ABS | N_EXT; |
4799 | else | |
4800 | { | |
4801 | BFD_ASSERT (pr->u.section->owner == finfo->output_bfd); | |
4802 | r_index = pr->u.section->target_index; | |
4803 | } | |
4804 | } | |
4805 | else | |
4806 | { | |
4807 | struct aout_link_hash_entry *h; | |
4808 | ||
4809 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); | |
4810 | r_extern = 1; | |
4811 | h = aout_link_hash_lookup (aout_hash_table (finfo->info), | |
4812 | pr->u.name, false, false, true); | |
4813 | if (h != (struct aout_link_hash_entry *) NULL | |
4814 | && h->indx == -1) | |
4815 | r_index = h->indx; | |
4816 | else | |
4817 | { | |
4818 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
4819 | (finfo->info, pr->u.name, (bfd *) NULL, | |
4820 | (asection *) NULL, (bfd_vma) 0))) | |
4821 | return false; | |
4822 | r_index = 0; | |
4823 | } | |
4824 | } | |
4825 | ||
4826 | howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc); | |
4827 | if (howto == (const reloc_howto_type *) NULL) | |
4828 | { | |
4829 | bfd_set_error (bfd_error_bad_value); | |
4830 | return false; | |
4831 | } | |
4832 | ||
4833 | if (o == obj_textsec (finfo->output_bfd)) | |
4834 | reloff_ptr = &finfo->treloff; | |
4835 | else if (o == obj_datasec (finfo->output_bfd)) | |
4836 | reloff_ptr = &finfo->dreloff; | |
4837 | else | |
4838 | abort (); | |
4839 | ||
4840 | if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE) | |
4841 | { | |
4842 | int r_pcrel; | |
4843 | int r_baserel; | |
4844 | int r_jmptable; | |
4845 | int r_relative; | |
4846 | int r_length; | |
4847 | ||
f42fe159 ILT |
4848 | #ifdef MY_put_reloc |
4849 | MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto, &srel); | |
4850 | #else | |
ec099b4b ILT |
4851 | r_pcrel = howto->pc_relative; |
4852 | r_baserel = (howto->type & 8) != 0; | |
cb9461ff JK |
4853 | r_jmptable = (howto->type & 16) != 0; |
4854 | r_relative = (howto->type & 32) != 0; | |
ec099b4b ILT |
4855 | r_length = howto->size; |
4856 | ||
4857 | PUT_WORD (finfo->output_bfd, p->offset, srel.r_address); | |
4858 | if (finfo->output_bfd->xvec->header_byteorder_big_p) | |
4859 | { | |
4860 | srel.r_index[0] = r_index >> 16; | |
4861 | srel.r_index[1] = r_index >> 8; | |
4862 | srel.r_index[2] = r_index; | |
4863 | srel.r_type[0] = | |
4864 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
4865 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
4866 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
4867 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
4868 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
4869 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
4870 | } | |
4871 | else | |
4872 | { | |
4873 | srel.r_index[2] = r_index >> 16; | |
4874 | srel.r_index[1] = r_index >> 8; | |
4875 | srel.r_index[0] = r_index; | |
4876 | srel.r_type[0] = | |
4877 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
4878 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
4879 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
4880 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
4881 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
4882 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
4883 | } | |
f42fe159 | 4884 | #endif |
ec099b4b ILT |
4885 | rel_ptr = (PTR) &srel; |
4886 | ||
4887 | /* We have to write the addend into the object file, since | |
4888 | standard a.out relocs are in place. It would be more | |
4889 | reliable if we had the current contents of the file here, | |
4890 | rather than assuming zeroes, but we can't read the file since | |
4891 | it was opened using bfd_openw. */ | |
4892 | if (pr->addend != 0) | |
4893 | { | |
4894 | bfd_size_type size; | |
4895 | bfd_reloc_status_type r; | |
4896 | bfd_byte *buf; | |
4897 | boolean ok; | |
4898 | ||
4899 | size = bfd_get_reloc_size (howto); | |
e85e8bfe | 4900 | buf = (bfd_byte *) bfd_zmalloc (size); |
ec099b4b ILT |
4901 | if (buf == (bfd_byte *) NULL) |
4902 | { | |
4903 | bfd_set_error (bfd_error_no_memory); | |
4904 | return false; | |
4905 | } | |
4906 | r = _bfd_relocate_contents (howto, finfo->output_bfd, | |
4907 | pr->addend, buf); | |
4908 | switch (r) | |
4909 | { | |
4910 | case bfd_reloc_ok: | |
4911 | break; | |
4912 | default: | |
4913 | case bfd_reloc_outofrange: | |
4914 | abort (); | |
4915 | case bfd_reloc_overflow: | |
4916 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
4917 | (finfo->info, | |
4918 | (p->type == bfd_section_reloc_link_order | |
4919 | ? bfd_section_name (finfo->output_bfd, | |
4920 | pr->u.section) | |
4921 | : pr->u.name), | |
4922 | howto->name, pr->addend, (bfd *) NULL, | |
4923 | (asection *) NULL, (bfd_vma) 0))) | |
4924 | { | |
4925 | free (buf); | |
4926 | return false; | |
4927 | } | |
4928 | break; | |
4929 | } | |
4930 | ok = bfd_set_section_contents (finfo->output_bfd, o, | |
4931 | (PTR) buf, | |
4932 | (file_ptr) p->offset, | |
4933 | size); | |
4934 | free (buf); | |
4935 | if (! ok) | |
4936 | return false; | |
4937 | } | |
4938 | } | |
4939 | else | |
4940 | { | |
4941 | PUT_WORD (finfo->output_bfd, p->offset, erel.r_address); | |
4942 | ||
4943 | if (finfo->output_bfd->xvec->header_byteorder_big_p) | |
4944 | { | |
4945 | erel.r_index[0] = r_index >> 16; | |
4946 | erel.r_index[1] = r_index >> 8; | |
4947 | erel.r_index[2] = r_index; | |
4948 | erel.r_type[0] = | |
4949 | ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
4950 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
4951 | } | |
4952 | else | |
4953 | { | |
4954 | erel.r_index[2] = r_index >> 16; | |
4955 | erel.r_index[1] = r_index >> 8; | |
4956 | erel.r_index[0] = r_index; | |
4957 | erel.r_type[0] = | |
4958 | (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
4959 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
4960 | } | |
4961 | ||
4962 | PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend); | |
4963 | ||
4964 | rel_ptr = (PTR) &erel; | |
4965 | } | |
4966 | ||
4967 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 | |
4968 | || (bfd_write (rel_ptr, (bfd_size_type) 1, | |
4969 | obj_reloc_entry_size (finfo->output_bfd), | |
4970 | finfo->output_bfd) | |
4971 | != obj_reloc_entry_size (finfo->output_bfd))) | |
4972 | return false; | |
4973 | ||
4974 | *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd); | |
4975 | ||
4976 | /* Assert that the relocs have not run into the symbols, and that n | |
4977 | the text relocs have not run into the data relocs. */ | |
4978 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
4979 | && (reloff_ptr != &finfo->treloff | |
4980 | || (*reloff_ptr | |
4981 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
4982 | ||
4983 | return true; | |
4984 | } |