Commit | Line | Data |
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1f29e30b | 1 | /* BFD semi-generic back-end for a.out binaries. |
51fbf454 | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. |
88dfcd68 | 3 | Written by Cygnus Support. |
7ed4093a | 4 | |
88dfcd68 | 5 | This file is part of BFD, the Binary File Descriptor library. |
7ed4093a | 6 | |
88dfcd68 | 7 | This program is free software; you can redistribute it and/or modify |
7ed4093a | 8 | it under the terms of the GNU General Public License as published by |
88dfcd68 SC |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
7ed4093a | 11 | |
88dfcd68 | 12 | This program is distributed in the hope that it will be useful, |
7ed4093a SC |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
88dfcd68 | 18 | along with this program; if not, write to the Free Software |
943fbd5b | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
7ed4093a | 20 | |
4e41b5aa SC |
21 | /* |
22 | SECTION | |
23 | a.out backends | |
6f715d66 | 24 | |
6f715d66 | 25 | |
4e41b5aa | 26 | DESCRIPTION |
6f715d66 | 27 | |
4e41b5aa SC |
28 | BFD supports a number of different flavours of a.out format, |
29 | though the major differences are only the sizes of the | |
30 | structures on disk, and the shape of the relocation | |
c188b0be | 31 | information. |
6f715d66 | 32 | |
c188b0be | 33 | The support is split into a basic support file @file{aoutx.h} |
4e41b5aa | 34 | and other files which derive functions from the base. One |
c188b0be | 35 | derivation file is @file{aoutf1.h} (for a.out flavour 1), and |
4e41b5aa SC |
36 | adds to the basic a.out functions support for sun3, sun4, 386 |
37 | and 29k a.out files, to create a target jump vector for a | |
c188b0be | 38 | specific target. |
6f715d66 | 39 | |
4e41b5aa | 40 | This information is further split out into more specific files |
c188b0be DM |
41 | for each machine, including @file{sunos.c} for sun3 and sun4, |
42 | @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a | |
4e41b5aa SC |
43 | demonstration of a 64 bit a.out format. |
44 | ||
c188b0be DM |
45 | The base file @file{aoutx.h} defines general mechanisms for |
46 | reading and writing records to and from disk and various | |
4e41b5aa | 47 | other methods which BFD requires. It is included by |
c188b0be DM |
48 | @file{aout32.c} and @file{aout64.c} to form the names |
49 | <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc. | |
4e41b5aa SC |
50 | |
51 | As an example, this is what goes on to make the back end for a | |
c188b0be | 52 | sun4, from @file{aout32.c}: |
4e41b5aa | 53 | |
3f7607af PB |
54 | | #define ARCH_SIZE 32 |
55 | | #include "aoutx.h" | |
4e41b5aa SC |
56 | |
57 | Which exports names: | |
58 | ||
3f7607af PB |
59 | | ... |
60 | | aout_32_canonicalize_reloc | |
61 | | aout_32_find_nearest_line | |
62 | | aout_32_get_lineno | |
63 | | aout_32_get_reloc_upper_bound | |
64 | | ... | |
6f715d66 | 65 | |
c188b0be | 66 | from @file{sunos.c}: |
4e41b5aa | 67 | |
3f7607af PB |
68 | | #define TARGET_NAME "a.out-sunos-big" |
69 | | #define VECNAME sunos_big_vec | |
70 | | #include "aoutf1.h" | |
4e41b5aa | 71 | |
c188b0be | 72 | requires all the names from @file{aout32.c}, and produces the jump vector |
6f715d66 | 73 | |
3f7607af | 74 | | sunos_big_vec |
c6705697 | 75 | |
c188b0be | 76 | The file @file{host-aout.c} is a special case. It is for a large set |
4e41b5aa SC |
77 | of hosts that use ``more or less standard'' a.out files, and |
78 | for which cross-debugging is not interesting. It uses the | |
79 | standard 32-bit a.out support routines, but determines the | |
80 | file offsets and addresses of the text, data, and BSS | |
81 | sections, the machine architecture and machine type, and the | |
82 | entry point address, in a host-dependent manner. Once these | |
83 | values have been determined, generic code is used to handle | |
c188b0be | 84 | the object file. |
c6705697 | 85 | |
4e41b5aa SC |
86 | When porting it to run on a new system, you must supply: |
87 | ||
3f7607af PB |
88 | | HOST_PAGE_SIZE |
89 | | HOST_SEGMENT_SIZE | |
90 | | HOST_MACHINE_ARCH (optional) | |
91 | | HOST_MACHINE_MACHINE (optional) | |
92 | | HOST_TEXT_START_ADDR | |
93 | | HOST_STACK_END_ADDR | |
c6705697 | 94 | |
4c3721d5 ILT |
95 | in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These |
96 | values, plus the structures and macros defined in @file{a.out.h} on | |
4e41b5aa SC |
97 | your host system, will produce a BFD target that will access |
98 | ordinary a.out files on your host. To configure a new machine | |
4c3721d5 | 99 | to use @file{host-aout.c}, specify: |
c6705697 | 100 | |
3f7607af PB |
101 | | TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec |
102 | | TDEPFILES= host-aout.o trad-core.o | |
c6705697 | 103 | |
4c3721d5 ILT |
104 | in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in} |
105 | to use the | |
106 | @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your | |
4e41b5aa | 107 | configuration is selected. |
c6705697 | 108 | |
6f715d66 SC |
109 | */ |
110 | ||
ce07dd7c KR |
111 | /* Some assumptions: |
112 | * Any BFD with D_PAGED set is ZMAGIC, and vice versa. | |
113 | Doesn't matter what the setting of WP_TEXT is on output, but it'll | |
114 | get set on input. | |
115 | * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC. | |
116 | * Any BFD with both flags clear is OMAGIC. | |
117 | (Just want to make these explicit, so the conditions tested in this | |
118 | file make sense if you're more familiar with a.out than with BFD.) */ | |
119 | ||
c618de01 SC |
120 | #define KEEPIT flags |
121 | #define KEEPITTYPE int | |
67c060c3 | 122 | |
a99c3d70 | 123 | #include <string.h> /* For strchr and friends */ |
67c060c3 | 124 | #include "bfd.h" |
7ed4093a | 125 | #include <sysdep.h> |
4c3721d5 | 126 | #include "bfdlink.h" |
7ed4093a | 127 | |
6f715d66 | 128 | #include "libaout.h" |
7ed4093a | 129 | #include "libbfd.h" |
c3eb25fc SC |
130 | #include "aout/aout64.h" |
131 | #include "aout/stab_gnu.h" | |
132 | #include "aout/ar.h" | |
7ed4093a | 133 | |
5c8444f8 | 134 | static boolean aout_get_external_symbols PARAMS ((bfd *)); |
4298e311 ILT |
135 | static boolean translate_from_native_sym_flags |
136 | PARAMS ((bfd *, aout_symbol_type *)); | |
137 | static boolean translate_to_native_sym_flags | |
138 | PARAMS ((bfd *, asymbol *, struct external_nlist *)); | |
0ee75d02 | 139 | |
4e41b5aa SC |
140 | /* |
141 | SUBSECTION | |
4c3721d5 | 142 | Relocations |
4e41b5aa SC |
143 | |
144 | DESCRIPTION | |
c188b0be | 145 | The file @file{aoutx.h} provides for both the @emph{standard} |
4e41b5aa SC |
146 | and @emph{extended} forms of a.out relocation records. |
147 | ||
c188b0be DM |
148 | The standard records contain only an |
149 | address, a symbol index, and a type field. The extended records | |
4e41b5aa | 150 | (used on 29ks and sparcs) also have a full integer for an |
c188b0be | 151 | addend. |
7ed4093a | 152 | |
6f715d66 | 153 | */ |
f42fe159 | 154 | #ifndef CTOR_TABLE_RELOC_HOWTO |
7ed4093a | 155 | #define CTOR_TABLE_RELOC_IDX 2 |
f42fe159 ILT |
156 | #define CTOR_TABLE_RELOC_HOWTO(BFD) ((obj_reloc_entry_size(BFD) == RELOC_EXT_SIZE \ |
157 | ? howto_table_ext : howto_table_std) \ | |
158 | + CTOR_TABLE_RELOC_IDX) | |
159 | #endif | |
160 | ||
161 | #ifndef MY_swap_std_reloc_in | |
162 | #define MY_swap_std_reloc_in NAME(aout,swap_std_reloc_in) | |
163 | #endif | |
164 | ||
165 | #ifndef MY_swap_std_reloc_out | |
166 | #define MY_swap_std_reloc_out NAME(aout,swap_std_reloc_out) | |
167 | #endif | |
67c060c3 | 168 | |
ce07dd7c KR |
169 | #define howto_table_ext NAME(aout,ext_howto_table) |
170 | #define howto_table_std NAME(aout,std_howto_table) | |
67c060c3 | 171 | |
c188b0be | 172 | reloc_howto_type howto_table_ext[] = |
7ed4093a | 173 | { |
4c3721d5 | 174 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */ |
2e235c93 ILT |
175 | HOWTO(RELOC_8, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", false, 0,0x000000ff, false), |
176 | HOWTO(RELOC_16, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", false, 0,0x0000ffff, false), | |
177 | HOWTO(RELOC_32, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", false, 0,0xffffffff, false), | |
178 | HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, complain_overflow_signed,0,"DISP8", false, 0,0x000000ff, false), | |
179 | HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, complain_overflow_signed,0,"DISP16", false, 0,0x0000ffff, false), | |
180 | HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, complain_overflow_signed,0,"DISP32", false, 0,0xffffffff, false), | |
181 | HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, complain_overflow_signed,0,"WDISP30", false, 0,0x3fffffff, false), | |
182 | HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, complain_overflow_signed,0,"WDISP22", false, 0,0x003fffff, false), | |
183 | HOWTO(RELOC_HI22, 10, 2, 22, false, 0, complain_overflow_bitfield,0,"HI22", false, 0,0x003fffff, false), | |
184 | HOWTO(RELOC_22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"22", false, 0,0x003fffff, false), | |
185 | HOWTO(RELOC_13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"13", false, 0,0x00001fff, false), | |
186 | HOWTO(RELOC_LO10, 0, 2, 10, false, 0, complain_overflow_dont,0,"LO10", false, 0,0x000003ff, false), | |
187 | HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, complain_overflow_bitfield,0,"SFA_BASE", false, 0,0xffffffff, false), | |
188 | HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, complain_overflow_bitfield,0,"SFA_OFF13",false, 0,0xffffffff, false), | |
189 | HOWTO(RELOC_BASE10, 0, 2, 16, false, 0, complain_overflow_bitfield,0,"BASE10", false, 0,0x0000ffff, false), | |
190 | HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"BASE13", false, 0,0x00001fff, false), | |
191 | HOWTO(RELOC_BASE22, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASE22", false, 0,0x00000000, false), | |
192 | HOWTO(RELOC_PC10, 0, 2, 10, false, 0, complain_overflow_bitfield,0,"PC10", false, 0,0x000003ff, false), | |
193 | HOWTO(RELOC_PC22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"PC22", false, 0,0x003fffff, false), | |
194 | HOWTO(RELOC_JMP_TBL,0, 2, 32, false, 0, complain_overflow_bitfield,0,"JMP_TBL", false, 0,0xffffffff, false), | |
195 | HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, complain_overflow_bitfield,0,"SEGOFF16", false, 0,0x00000000, false), | |
196 | HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"GLOB_DAT", false, 0,0x00000000, false), | |
197 | HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_SLOT", false, 0,0x00000000, false), | |
198 | HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false), | |
7ed4093a SC |
199 | }; |
200 | ||
201 | /* Convert standard reloc records to "arelent" format (incl byte swap). */ | |
202 | ||
ce07dd7c | 203 | reloc_howto_type howto_table_std[] = { |
4c3721d5 | 204 | /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */ |
c188b0be | 205 | HOWTO( 0, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", true, 0x000000ff,0x000000ff, false), |
2e235c93 ILT |
206 | HOWTO( 1, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", true, 0x0000ffff,0x0000ffff, false), |
207 | HOWTO( 2, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", true, 0xffffffff,0xffffffff, false), | |
c188b0be DM |
208 | HOWTO( 3, 0, 4, 64, false, 0, complain_overflow_bitfield,0,"64", true, 0xdeaddead,0xdeaddead, false), |
209 | HOWTO( 4, 0, 0, 8, true, 0, complain_overflow_signed, 0,"DISP8", true, 0x000000ff,0x000000ff, false), | |
210 | HOWTO( 5, 0, 1, 16, true, 0, complain_overflow_signed, 0,"DISP16", true, 0x0000ffff,0x0000ffff, false), | |
211 | HOWTO( 6, 0, 2, 32, true, 0, complain_overflow_signed, 0,"DISP32", true, 0xffffffff,0xffffffff, false), | |
212 | HOWTO( 7, 0, 4, 64, true, 0, complain_overflow_signed, 0,"DISP64", true, 0xfeedface,0xfeedface, false), | |
4852416e | 213 | HOWTO( 8, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"GOT_REL", false, 0,0x00000000, false), |
c188b0be DM |
214 | HOWTO( 9, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"BASE16", false,0xffffffff,0xffffffff, false), |
215 | HOWTO(10, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"BASE32", false,0xffffffff,0xffffffff, false), | |
cb9461ff JK |
216 | { -1 }, |
217 | { -1 }, | |
218 | { -1 }, | |
219 | { -1 }, | |
220 | { -1 }, | |
221 | HOWTO(16, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_TABLE", false, 0,0x00000000, false), | |
222 | { -1 }, | |
223 | { -1 }, | |
224 | { -1 }, | |
225 | { -1 }, | |
226 | { -1 }, | |
227 | { -1 }, | |
228 | { -1 }, | |
229 | { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, | |
230 | HOWTO(32, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false), | |
231 | { -1 }, | |
232 | { -1 }, | |
233 | { -1 }, | |
234 | { -1 }, | |
235 | { -1 }, | |
236 | { -1 }, | |
237 | { -1 }, | |
238 | HOWTO(40, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASEREL", false, 0,0x00000000, false), | |
7ed4093a SC |
239 | }; |
240 | ||
c188b0be DM |
241 | #define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0])) |
242 | ||
51fbf454 | 243 | reloc_howto_type * |
8eb5d4be JK |
244 | NAME(aout,reloc_type_lookup) (abfd,code) |
245 | bfd *abfd; | |
246 | bfd_reloc_code_real_type code; | |
214f8f23 KR |
247 | { |
248 | #define EXT(i,j) case i: return &howto_table_ext[j] | |
249 | #define STD(i,j) case i: return &howto_table_std[j] | |
250 | int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE; | |
251 | if (code == BFD_RELOC_CTOR) | |
252 | switch (bfd_get_arch_info (abfd)->bits_per_address) | |
253 | { | |
254 | case 32: | |
255 | code = BFD_RELOC_32; | |
256 | break; | |
ec099b4b ILT |
257 | case 64: |
258 | code = BFD_RELOC_64; | |
259 | break; | |
214f8f23 KR |
260 | } |
261 | if (ext) | |
262 | switch (code) | |
263 | { | |
264 | EXT (BFD_RELOC_32, 2); | |
265 | EXT (BFD_RELOC_HI22, 8); | |
266 | EXT (BFD_RELOC_LO10, 11); | |
267 | EXT (BFD_RELOC_32_PCREL_S2, 6); | |
c188b0be | 268 | EXT (BFD_RELOC_SPARC_WDISP22, 7); |
ec099b4b ILT |
269 | EXT (BFD_RELOC_SPARC13, 10); |
270 | EXT (BFD_RELOC_SPARC_BASE13, 15); | |
51fbf454 | 271 | default: return (reloc_howto_type *) NULL; |
214f8f23 KR |
272 | } |
273 | else | |
274 | /* std relocs */ | |
275 | switch (code) | |
276 | { | |
277 | STD (BFD_RELOC_16, 1); | |
278 | STD (BFD_RELOC_32, 2); | |
279 | STD (BFD_RELOC_8_PCREL, 4); | |
280 | STD (BFD_RELOC_16_PCREL, 5); | |
281 | STD (BFD_RELOC_32_PCREL, 6); | |
c188b0be DM |
282 | STD (BFD_RELOC_16_BASEREL, 9); |
283 | STD (BFD_RELOC_32_BASEREL, 10); | |
51fbf454 | 284 | default: return (reloc_howto_type *) NULL; |
214f8f23 | 285 | } |
214f8f23 | 286 | } |
7ed4093a | 287 | |
4e41b5aa SC |
288 | /* |
289 | SUBSECTION | |
4c3721d5 | 290 | Internal entry points |
4e41b5aa SC |
291 | |
292 | DESCRIPTION | |
c188b0be | 293 | @file{aoutx.h} exports several routines for accessing the |
4e41b5aa SC |
294 | contents of an a.out file, which are gathered and exported in |
295 | turn by various format specific files (eg sunos.c). | |
296 | ||
6f715d66 SC |
297 | */ |
298 | ||
4e41b5aa SC |
299 | /* |
300 | FUNCTION | |
c188b0be | 301 | aout_@var{size}_swap_exec_header_in |
4e41b5aa | 302 | |
fa2b89f1 | 303 | SYNOPSIS |
c188b0be | 304 | void aout_@var{size}_swap_exec_header_in, |
4e41b5aa SC |
305 | (bfd *abfd, |
306 | struct external_exec *raw_bytes, | |
307 | struct internal_exec *execp); | |
c188b0be DM |
308 | |
309 | DESCRIPTION | |
310 | Swap the information in an executable header @var{raw_bytes} taken | |
311 | from a raw byte stream memory image into the internal exec header | |
312 | structure @var{execp}. | |
6f715d66 | 313 | */ |
c188b0be | 314 | |
34dd8ba3 | 315 | #ifndef NAME_swap_exec_header_in |
7ed4093a | 316 | void |
8eb5d4be JK |
317 | NAME(aout,swap_exec_header_in) (abfd, raw_bytes, execp) |
318 | bfd *abfd; | |
319 | struct external_exec *raw_bytes; | |
320 | struct internal_exec *execp; | |
7ed4093a SC |
321 | { |
322 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
323 | ||
55c0061e FF |
324 | /* The internal_exec structure has some fields that are unused in this |
325 | configuration (IE for i960), so ensure that all such uninitialized | |
326 | fields are zero'd out. There are places where two of these structs | |
327 | are memcmp'd, and thus the contents do matter. */ | |
68241b2b | 328 | memset ((PTR) execp, 0, sizeof (struct internal_exec)); |
7ed4093a SC |
329 | /* Now fill in fields in the execp, from the bytes in the raw data. */ |
330 | execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); | |
331 | execp->a_text = GET_WORD (abfd, bytes->e_text); | |
332 | execp->a_data = GET_WORD (abfd, bytes->e_data); | |
333 | execp->a_bss = GET_WORD (abfd, bytes->e_bss); | |
334 | execp->a_syms = GET_WORD (abfd, bytes->e_syms); | |
335 | execp->a_entry = GET_WORD (abfd, bytes->e_entry); | |
336 | execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); | |
337 | execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); | |
338 | } | |
34dd8ba3 JG |
339 | #define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in) |
340 | #endif | |
7ed4093a | 341 | |
4e41b5aa SC |
342 | /* |
343 | FUNCTION | |
c188b0be | 344 | aout_@var{size}_swap_exec_header_out |
4e41b5aa | 345 | |
fa2b89f1 | 346 | SYNOPSIS |
c188b0be | 347 | void aout_@var{size}_swap_exec_header_out |
6f715d66 SC |
348 | (bfd *abfd, |
349 | struct internal_exec *execp, | |
4e41b5aa | 350 | struct external_exec *raw_bytes); |
c188b0be DM |
351 | |
352 | DESCRIPTION | |
353 | Swap the information in an internal exec header structure | |
354 | @var{execp} into the buffer @var{raw_bytes} ready for writing to disk. | |
6f715d66 | 355 | */ |
7ed4093a | 356 | void |
8eb5d4be JK |
357 | NAME(aout,swap_exec_header_out) (abfd, execp, raw_bytes) |
358 | bfd *abfd; | |
359 | struct internal_exec *execp; | |
360 | struct external_exec *raw_bytes; | |
7ed4093a SC |
361 | { |
362 | struct external_exec *bytes = (struct external_exec *)raw_bytes; | |
363 | ||
364 | /* Now fill in fields in the raw data, from the fields in the exec struct. */ | |
365 | bfd_h_put_32 (abfd, execp->a_info , bytes->e_info); | |
366 | PUT_WORD (abfd, execp->a_text , bytes->e_text); | |
367 | PUT_WORD (abfd, execp->a_data , bytes->e_data); | |
368 | PUT_WORD (abfd, execp->a_bss , bytes->e_bss); | |
369 | PUT_WORD (abfd, execp->a_syms , bytes->e_syms); | |
370 | PUT_WORD (abfd, execp->a_entry , bytes->e_entry); | |
371 | PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); | |
372 | PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); | |
373 | } | |
374 | ||
ec6b18c4 | 375 | /* Make all the section for an a.out file. */ |
7ed4093a | 376 | |
ec6b18c4 ILT |
377 | boolean |
378 | NAME(aout,make_sections) (abfd) | |
379 | bfd *abfd; | |
380 | { | |
381 | if (obj_textsec (abfd) == (asection *) NULL | |
382 | && bfd_make_section (abfd, ".text") == (asection *) NULL) | |
383 | return false; | |
384 | if (obj_datasec (abfd) == (asection *) NULL | |
385 | && bfd_make_section (abfd, ".data") == (asection *) NULL) | |
386 | return false; | |
387 | if (obj_bsssec (abfd) == (asection *) NULL | |
388 | && bfd_make_section (abfd, ".bss") == (asection *) NULL) | |
389 | return false; | |
390 | return true; | |
391 | } | |
6f715d66 | 392 | |
4e41b5aa SC |
393 | /* |
394 | FUNCTION | |
c188b0be | 395 | aout_@var{size}_some_aout_object_p |
6f715d66 | 396 | |
fa2b89f1 | 397 | SYNOPSIS |
2f3508ad | 398 | const bfd_target *aout_@var{size}_some_aout_object_p |
6f715d66 | 399 | (bfd *abfd, |
2f3508ad | 400 | const bfd_target *(*callback_to_real_object_p)()); |
c188b0be DM |
401 | |
402 | DESCRIPTION | |
403 | Some a.out variant thinks that the file open in @var{abfd} | |
404 | checking is an a.out file. Do some more checking, and set up | |
405 | for access if it really is. Call back to the calling | |
406 | environment's "finish up" function just before returning, to | |
407 | handle any last-minute setup. | |
6f715d66 | 408 | */ |
c188b0be | 409 | |
2f3508ad | 410 | const bfd_target * |
8eb5d4be JK |
411 | NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p) |
412 | bfd *abfd; | |
413 | struct internal_exec *execp; | |
2f3508ad | 414 | const bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *)); |
7ed4093a | 415 | { |
214f8f23 | 416 | struct aout_data_struct *rawptr, *oldrawptr; |
2f3508ad | 417 | const bfd_target *result; |
7ed4093a | 418 | |
6db82ea7 | 419 | rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (struct aout_data_struct )); |
7ed4093a | 420 | if (rawptr == NULL) { |
68241b2b | 421 | bfd_set_error (bfd_error_no_memory); |
7ed4093a SC |
422 | return 0; |
423 | } | |
424 | ||
214f8f23 | 425 | oldrawptr = abfd->tdata.aout_data; |
6db82ea7 | 426 | abfd->tdata.aout_data = rawptr; |
ebd24135 ILT |
427 | |
428 | /* Copy the contents of the old tdata struct. | |
429 | In particular, we want the subformat, since for hpux it was set in | |
430 | hp300hpux.c:swap_exec_header_in and will be used in | |
431 | hp300hpux.c:callback. */ | |
432 | if (oldrawptr != NULL) | |
433 | *abfd->tdata.aout_data = *oldrawptr; | |
434 | ||
6db82ea7 SC |
435 | abfd->tdata.aout_data->a.hdr = &rawptr->e; |
436 | *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */ | |
437 | execp = abfd->tdata.aout_data->a.hdr; | |
7ed4093a SC |
438 | |
439 | /* Set the file flags */ | |
440 | abfd->flags = NO_FLAGS; | |
441 | if (execp->a_drsize || execp->a_trsize) | |
442 | abfd->flags |= HAS_RELOC; | |
e6e265ce | 443 | /* Setting of EXEC_P has been deferred to the bottom of this function */ |
c188b0be | 444 | if (execp->a_syms) |
7ed4093a | 445 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; |
e68de5d5 ILT |
446 | if (N_DYNAMIC(*execp)) |
447 | abfd->flags |= DYNAMIC; | |
7ed4093a | 448 | |
ce07dd7c KR |
449 | if (N_MAGIC (*execp) == ZMAGIC) |
450 | { | |
f5419a59 ILT |
451 | abfd->flags |= D_PAGED | WP_TEXT; |
452 | adata (abfd).magic = z_magic; | |
453 | } | |
454 | else if (N_MAGIC (*execp) == QMAGIC) | |
455 | { | |
456 | abfd->flags |= D_PAGED | WP_TEXT; | |
457 | adata (abfd).magic = z_magic; | |
458 | adata (abfd).subformat = q_magic_format; | |
ce07dd7c KR |
459 | } |
460 | else if (N_MAGIC (*execp) == NMAGIC) | |
461 | { | |
462 | abfd->flags |= WP_TEXT; | |
f5419a59 | 463 | adata (abfd).magic = n_magic; |
ce07dd7c | 464 | } |
7b024321 ILT |
465 | else if (N_MAGIC (*execp) == OMAGIC |
466 | || N_MAGIC (*execp) == BMAGIC) | |
f5419a59 | 467 | adata (abfd).magic = o_magic; |
ce07dd7c | 468 | else |
f5419a59 ILT |
469 | { |
470 | /* Should have been checked with N_BADMAG before this routine | |
471 | was called. */ | |
472 | abort (); | |
473 | } | |
7ed4093a SC |
474 | |
475 | bfd_get_start_address (abfd) = execp->a_entry; | |
476 | ||
477 | obj_aout_symbols (abfd) = (aout_symbol_type *)NULL; | |
478 | bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); | |
479 | ||
7ed4093a SC |
480 | /* The default relocation entry size is that of traditional V7 Unix. */ |
481 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
482 | ||
7b02b4ed JG |
483 | /* The default symbol entry size is that of traditional Unix. */ |
484 | obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; | |
485 | ||
728472f1 ILT |
486 | obj_aout_external_syms (abfd) = NULL; |
487 | obj_aout_external_strings (abfd) = NULL; | |
488 | obj_aout_sym_hashes (abfd) = NULL; | |
489 | ||
ec6b18c4 ILT |
490 | if (! NAME(aout,make_sections) (abfd)) |
491 | return NULL; | |
7ed4093a | 492 | |
6db82ea7 SC |
493 | obj_datasec (abfd)->_raw_size = execp->a_data; |
494 | obj_bsssec (abfd)->_raw_size = execp->a_bss; | |
7ed4093a | 495 | |
0ee75d02 | 496 | obj_textsec (abfd)->flags = |
11676adc | 497 | (execp->a_trsize != 0 |
0ee75d02 ILT |
498 | ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) |
499 | : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); | |
500 | obj_datasec (abfd)->flags = | |
11676adc | 501 | (execp->a_drsize != 0 |
0ee75d02 ILT |
502 | ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) |
503 | : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); | |
7ed4093a SC |
504 | obj_bsssec (abfd)->flags = SEC_ALLOC; |
505 | ||
506 | #ifdef THIS_IS_ONLY_DOCUMENTATION | |
98d43107 JG |
507 | /* The common code can't fill in these things because they depend |
508 | on either the start address of the text segment, the rounding | |
9783e04a | 509 | up of virtual addresses between segments, or the starting file |
98d43107 JG |
510 | position of the text segment -- all of which varies among different |
511 | versions of a.out. */ | |
512 | ||
c188b0be | 513 | /* Call back to the format-dependent code to fill in the rest of the |
7ed4093a SC |
514 | fields and do any further cleanup. Things that should be filled |
515 | in by the callback: */ | |
516 | ||
517 | struct exec *execp = exec_hdr (abfd); | |
518 | ||
98d43107 | 519 | obj_textsec (abfd)->size = N_TXTSIZE(*execp); |
6db82ea7 | 520 | obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp); |
98d43107 JG |
521 | /* data and bss are already filled in since they're so standard */ |
522 | ||
7ed4093a | 523 | /* The virtual memory addresses of the sections */ |
7ed4093a | 524 | obj_textsec (abfd)->vma = N_TXTADDR(*execp); |
98d43107 JG |
525 | obj_datasec (abfd)->vma = N_DATADDR(*execp); |
526 | obj_bsssec (abfd)->vma = N_BSSADDR(*execp); | |
7ed4093a SC |
527 | |
528 | /* The file offsets of the sections */ | |
529 | obj_textsec (abfd)->filepos = N_TXTOFF(*execp); | |
530 | obj_datasec (abfd)->filepos = N_DATOFF(*execp); | |
531 | ||
532 | /* The file offsets of the relocation info */ | |
533 | obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); | |
534 | obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); | |
535 | ||
536 | /* The file offsets of the string table and symbol table. */ | |
537 | obj_str_filepos (abfd) = N_STROFF (*execp); | |
538 | obj_sym_filepos (abfd) = N_SYMOFF (*execp); | |
539 | ||
7ed4093a SC |
540 | /* Determine the architecture and machine type of the object file. */ |
541 | switch (N_MACHTYPE (*exec_hdr (abfd))) { | |
542 | default: | |
543 | abfd->obj_arch = bfd_arch_obscure; | |
544 | break; | |
545 | } | |
546 | ||
7b02b4ed JG |
547 | adata(abfd)->page_size = PAGE_SIZE; |
548 | adata(abfd)->segment_size = SEGMENT_SIZE; | |
549 | adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE; | |
550 | ||
7ed4093a SC |
551 | return abfd->xvec; |
552 | ||
553 | /* The architecture is encoded in various ways in various a.out variants, | |
554 | or is not encoded at all in some of them. The relocation size depends | |
555 | on the architecture and the a.out variant. Finally, the return value | |
556 | is the bfd_target vector in use. If an error occurs, return zero and | |
557 | set bfd_error to the appropriate error code. | |
c188b0be | 558 | |
7ed4093a SC |
559 | Formats such as b.out, which have additional fields in the a.out |
560 | header, should cope with them in this callback as well. */ | |
561 | #endif /* DOCUMENTATION */ | |
562 | ||
e6e265ce JG |
563 | result = (*callback_to_real_object_p)(abfd); |
564 | ||
565 | /* Now that the segment addresses have been worked out, take a better | |
566 | guess at whether the file is executable. If the entry point | |
567 | is within the text segment, assume it is. (This makes files | |
568 | executable even if their entry point address is 0, as long as | |
6c97aedf | 569 | their text starts at zero.). */ |
e6e265ce | 570 | if ((execp->a_entry >= obj_textsec(abfd)->vma) && |
6db82ea7 | 571 | (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size)) |
e6e265ce | 572 | abfd->flags |= EXEC_P; |
6c97aedf ILT |
573 | #ifdef STAT_FOR_EXEC |
574 | else | |
575 | { | |
576 | struct stat stat_buf; | |
577 | ||
578 | /* The original heuristic doesn't work in some important cases. | |
579 | The a.out file has no information about the text start | |
580 | address. For files (like kernels) linked to non-standard | |
581 | addresses (ld -Ttext nnn) the entry point may not be between | |
582 | the default text start (obj_textsec(abfd)->vma) and | |
583 | (obj_textsec(abfd)->vma) + text size. This is not just a mach | |
584 | issue. Many kernels are loaded at non standard addresses. */ | |
585 | if (abfd->iostream | |
586 | && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0) | |
587 | && ((stat_buf.st_mode & 0111) != 0)) | |
588 | abfd->flags |= EXEC_P; | |
589 | } | |
590 | #endif /* STAT_FOR_EXEC */ | |
591 | ||
214f8f23 KR |
592 | if (result) |
593 | { | |
1f29e30b | 594 | #if 0 /* These should be set correctly anyways. */ |
214f8f23 KR |
595 | abfd->sections = obj_textsec (abfd); |
596 | obj_textsec (abfd)->next = obj_datasec (abfd); | |
597 | obj_datasec (abfd)->next = obj_bsssec (abfd); | |
1f29e30b | 598 | #endif |
214f8f23 KR |
599 | } |
600 | else | |
601 | { | |
602 | free (rawptr); | |
603 | abfd->tdata.aout_data = oldrawptr; | |
604 | } | |
e6e265ce | 605 | return result; |
7ed4093a SC |
606 | } |
607 | ||
4e41b5aa SC |
608 | /* |
609 | FUNCTION | |
c188b0be | 610 | aout_@var{size}_mkobject |
6f715d66 | 611 | |
fa2b89f1 | 612 | SYNOPSIS |
c188b0be DM |
613 | boolean aout_@var{size}_mkobject, (bfd *abfd); |
614 | ||
615 | DESCRIPTION | |
616 | Initialize BFD @var{abfd} for use with a.out files. | |
6f715d66 | 617 | */ |
7ed4093a SC |
618 | |
619 | boolean | |
8eb5d4be JK |
620 | NAME(aout,mkobject) (abfd) |
621 | bfd *abfd; | |
7ed4093a | 622 | { |
6db82ea7 | 623 | struct aout_data_struct *rawptr; |
7ed4093a | 624 | |
68241b2b | 625 | bfd_set_error (bfd_error_system_call); |
7ed4093a SC |
626 | |
627 | /* Use an intermediate variable for clarity */ | |
2e235c93 | 628 | rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct )); |
c188b0be | 629 | |
7ed4093a | 630 | if (rawptr == NULL) { |
68241b2b | 631 | bfd_set_error (bfd_error_no_memory); |
7ed4093a SC |
632 | return false; |
633 | } | |
c188b0be | 634 | |
6db82ea7 | 635 | abfd->tdata.aout_data = rawptr; |
7ed4093a | 636 | exec_hdr (abfd) = &(rawptr->e); |
c188b0be | 637 | |
7ed4093a SC |
638 | obj_textsec (abfd) = (asection *)NULL; |
639 | obj_datasec (abfd) = (asection *)NULL; | |
640 | obj_bsssec (abfd) = (asection *)NULL; | |
c188b0be | 641 | |
7ed4093a SC |
642 | return true; |
643 | } | |
644 | ||
6f715d66 | 645 | |
4e41b5aa SC |
646 | /* |
647 | FUNCTION | |
c188b0be DM |
648 | aout_@var{size}_machine_type |
649 | ||
650 | SYNOPSIS | |
651 | enum machine_type aout_@var{size}_machine_type | |
652 | (enum bfd_architecture arch, | |
653 | unsigned long machine)); | |
6f715d66 | 654 | |
4e41b5aa SC |
655 | DESCRIPTION |
656 | Keep track of machine architecture and machine type for | |
c188b0be DM |
657 | a.out's. Return the <<machine_type>> for a particular |
658 | architecture and machine, or <<M_UNKNOWN>> if that exact architecture | |
659 | and machine can't be represented in a.out format. | |
7ed4093a | 660 | |
4e41b5aa | 661 | If the architecture is understood, machine type 0 (default) |
c188b0be | 662 | is always understood. |
6f715d66 | 663 | */ |
7ed4093a SC |
664 | |
665 | enum machine_type | |
9ae74960 | 666 | NAME(aout,machine_type) (arch, machine, unknown) |
8eb5d4be JK |
667 | enum bfd_architecture arch; |
668 | unsigned long machine; | |
9ae74960 | 669 | boolean *unknown; |
7ed4093a SC |
670 | { |
671 | enum machine_type arch_flags; | |
c188b0be | 672 | |
7ed4093a | 673 | arch_flags = M_UNKNOWN; |
9ae74960 | 674 | *unknown = true; |
c188b0be | 675 | |
7ed4093a SC |
676 | switch (arch) { |
677 | case bfd_arch_sparc: | |
678 | if (machine == 0) arch_flags = M_SPARC; | |
679 | break; | |
c188b0be | 680 | |
7ed4093a SC |
681 | case bfd_arch_m68k: |
682 | switch (machine) { | |
683 | case 0: arch_flags = M_68010; break; | |
9ae74960 | 684 | case 68000: arch_flags = M_UNKNOWN; *unknown = false; break; |
7ed4093a SC |
685 | case 68010: arch_flags = M_68010; break; |
686 | case 68020: arch_flags = M_68020; break; | |
687 | default: arch_flags = M_UNKNOWN; break; | |
688 | } | |
689 | break; | |
c188b0be | 690 | |
7ed4093a SC |
691 | case bfd_arch_i386: |
692 | if (machine == 0) arch_flags = M_386; | |
693 | break; | |
c188b0be | 694 | |
7ed4093a SC |
695 | case bfd_arch_a29k: |
696 | if (machine == 0) arch_flags = M_29K; | |
697 | break; | |
c188b0be | 698 | |
204ba9e3 ILT |
699 | case bfd_arch_arm: |
700 | if (machine == 0) arch_flags = M_ARM; | |
701 | break; | |
702 | ||
5cd3dcff KR |
703 | case bfd_arch_mips: |
704 | switch (machine) { | |
705 | case 0: | |
706 | case 2000: | |
707 | case 3000: arch_flags = M_MIPS1; break; | |
943fbd5b | 708 | case 4000: /* mips3 */ |
5cd3dcff | 709 | case 4400: |
943fbd5b KR |
710 | case 8000: /* mips4 */ |
711 | /* real mips2: */ | |
5cd3dcff KR |
712 | case 6000: arch_flags = M_MIPS2; break; |
713 | default: arch_flags = M_UNKNOWN; break; | |
714 | } | |
715 | break; | |
716 | ||
f42fe159 ILT |
717 | case bfd_arch_ns32k: |
718 | switch (machine) { | |
719 | case 0: arch_flags = M_NS32532; break; | |
720 | case 32032: arch_flags = M_NS32032; break; | |
721 | case 32532: arch_flags = M_NS32532; break; | |
722 | default: arch_flags = M_UNKNOWN; break; | |
723 | } | |
724 | break; | |
725 | ||
82b1edf7 KR |
726 | case bfd_arch_vax: |
727 | *unknown = false; | |
728 | break; | |
729 | ||
730 | /* start-sanitize-rce */ | |
731 | case bfd_arch_rce: | |
732 | arch_flags = M_RCE; | |
733 | break; | |
734 | /* end-sanitize-rce */ | |
735 | ||
7ed4093a SC |
736 | default: |
737 | arch_flags = M_UNKNOWN; | |
7ed4093a | 738 | } |
9ae74960 ILT |
739 | |
740 | if (arch_flags != M_UNKNOWN) | |
741 | *unknown = false; | |
742 | ||
7ed4093a SC |
743 | return arch_flags; |
744 | } | |
745 | ||
9e2dad8e | 746 | |
4e41b5aa SC |
747 | /* |
748 | FUNCTION | |
c188b0be | 749 | aout_@var{size}_set_arch_mach |
6f715d66 | 750 | |
fa2b89f1 | 751 | SYNOPSIS |
c188b0be | 752 | boolean aout_@var{size}_set_arch_mach, |
6f715d66 | 753 | (bfd *, |
c188b0be | 754 | enum bfd_architecture arch, |
6f715d66 | 755 | unsigned long machine)); |
c188b0be DM |
756 | |
757 | DESCRIPTION | |
758 | Set the architecture and the machine of the BFD @var{abfd} to the | |
759 | values @var{arch} and @var{machine}. Verify that @var{abfd}'s format | |
760 | can support the architecture required. | |
6f715d66 SC |
761 | */ |
762 | ||
7ed4093a | 763 | boolean |
8eb5d4be JK |
764 | NAME(aout,set_arch_mach) (abfd, arch, machine) |
765 | bfd *abfd; | |
766 | enum bfd_architecture arch; | |
767 | unsigned long machine; | |
7ed4093a | 768 | { |
2e235c93 ILT |
769 | if (! bfd_default_set_arch_mach (abfd, arch, machine)) |
770 | return false; | |
771 | ||
9ae74960 ILT |
772 | if (arch != bfd_arch_unknown) |
773 | { | |
774 | boolean unknown; | |
775 | ||
776 | NAME(aout,machine_type) (arch, machine, &unknown); | |
777 | if (unknown) | |
778 | return false; | |
779 | } | |
ce07dd7c | 780 | |
214f8f23 KR |
781 | /* Determine the size of a relocation entry */ |
782 | switch (arch) { | |
783 | case bfd_arch_sparc: | |
784 | case bfd_arch_a29k: | |
5cd3dcff | 785 | case bfd_arch_mips: |
214f8f23 KR |
786 | obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; |
787 | break; | |
788 | default: | |
789 | obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; | |
790 | break; | |
791 | } | |
792 | ||
2768b3f7 | 793 | return (*aout_backend_info(abfd)->set_sizes) (abfd); |
7ed4093a | 794 | } |
7ed4093a | 795 | |
4c3721d5 ILT |
796 | static void |
797 | adjust_o_magic (abfd, execp) | |
798 | bfd *abfd; | |
799 | struct internal_exec *execp; | |
800 | { | |
801 | file_ptr pos = adata (abfd).exec_bytes_size; | |
802 | bfd_vma vma = 0; | |
803 | int pad = 0; | |
804 | ||
805 | /* Text. */ | |
806 | obj_textsec(abfd)->filepos = pos; | |
74942465 ILT |
807 | if (!obj_textsec(abfd)->user_set_vma) |
808 | obj_textsec(abfd)->vma = vma; | |
809 | else | |
810 | vma = obj_textsec(abfd)->vma; | |
811 | ||
4c3721d5 ILT |
812 | pos += obj_textsec(abfd)->_raw_size; |
813 | vma += obj_textsec(abfd)->_raw_size; | |
814 | ||
815 | /* Data. */ | |
816 | if (!obj_datasec(abfd)->user_set_vma) | |
817 | { | |
818 | #if 0 /* ?? Does alignment in the file image really matter? */ | |
819 | pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma; | |
820 | #endif | |
821 | obj_textsec(abfd)->_raw_size += pad; | |
822 | pos += pad; | |
823 | vma += pad; | |
824 | obj_datasec(abfd)->vma = vma; | |
825 | } | |
82b1edf7 KR |
826 | else |
827 | vma = obj_datasec(abfd)->vma; | |
4c3721d5 ILT |
828 | obj_datasec(abfd)->filepos = pos; |
829 | pos += obj_datasec(abfd)->_raw_size; | |
830 | vma += obj_datasec(abfd)->_raw_size; | |
831 | ||
832 | /* BSS. */ | |
833 | if (!obj_bsssec(abfd)->user_set_vma) | |
834 | { | |
835 | #if 0 | |
836 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; | |
837 | #endif | |
838 | obj_datasec(abfd)->_raw_size += pad; | |
839 | pos += pad; | |
840 | vma += pad; | |
841 | obj_bsssec(abfd)->vma = vma; | |
842 | } | |
f4945271 ILT |
843 | else |
844 | { | |
845 | /* The VMA of the .bss section is set by the the VMA of the | |
846 | .data section plus the size of the .data section. We may | |
847 | need to add padding bytes to make this true. */ | |
848 | pad = obj_bsssec (abfd)->vma - vma; | |
849 | if (pad > 0) | |
850 | { | |
851 | obj_datasec (abfd)->_raw_size += pad; | |
852 | pos += pad; | |
853 | } | |
854 | } | |
4c3721d5 ILT |
855 | obj_bsssec(abfd)->filepos = pos; |
856 | ||
857 | /* Fix up the exec header. */ | |
858 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
859 | execp->a_data = obj_datasec(abfd)->_raw_size; | |
860 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
861 | N_SET_MAGIC (*execp, OMAGIC); | |
862 | } | |
863 | ||
864 | static void | |
865 | adjust_z_magic (abfd, execp) | |
866 | bfd *abfd; | |
867 | struct internal_exec *execp; | |
868 | { | |
869 | bfd_size_type data_pad, text_pad; | |
870 | file_ptr text_end; | |
871 | CONST struct aout_backend_data *abdp; | |
872 | int ztih; /* Nonzero if text includes exec header. */ | |
4c3721d5 ILT |
873 | |
874 | abdp = aout_backend_info (abfd); | |
875 | ||
876 | /* Text. */ | |
0630aba5 ILT |
877 | ztih = (abdp != NULL |
878 | && (abdp->text_includes_header | |
879 | || obj_aout_subformat (abfd) == q_magic_format)); | |
4c3721d5 ILT |
880 | obj_textsec(abfd)->filepos = (ztih |
881 | ? adata(abfd).exec_bytes_size | |
0630aba5 | 882 | : adata(abfd).zmagic_disk_block_size); |
4c3721d5 | 883 | if (! obj_textsec(abfd)->user_set_vma) |
e1f99f60 ILT |
884 | { |
885 | /* ?? Do we really need to check for relocs here? */ | |
886 | obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC) | |
887 | ? 0 | |
888 | : (ztih | |
889 | ? (abdp->default_text_vma | |
890 | + adata(abfd).exec_bytes_size) | |
891 | : abdp->default_text_vma)); | |
892 | text_pad = 0; | |
893 | } | |
894 | else | |
895 | { | |
896 | /* The .text section is being loaded at an unusual address. We | |
897 | may need to pad it such that the .data section starts at a page | |
898 | boundary. */ | |
899 | if (ztih) | |
900 | text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma) | |
901 | & (adata (abfd).page_size - 1)); | |
902 | else | |
903 | text_pad = ((- obj_textsec (abfd)->vma) | |
904 | & (adata (abfd).page_size - 1)); | |
905 | } | |
906 | ||
4c3721d5 | 907 | /* Find start of data. */ |
0630aba5 ILT |
908 | if (ztih) |
909 | { | |
910 | text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size; | |
e1f99f60 | 911 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
0630aba5 ILT |
912 | } |
913 | else | |
914 | { | |
915 | /* Note that if page_size == zmagic_disk_block_size, then | |
916 | filepos == page_size, and this case is the same as the ztih | |
917 | case. */ | |
918 | text_end = obj_textsec (abfd)->_raw_size; | |
e1f99f60 | 919 | text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; |
0630aba5 ILT |
920 | text_end += obj_textsec (abfd)->filepos; |
921 | } | |
4c3721d5 ILT |
922 | obj_textsec(abfd)->_raw_size += text_pad; |
923 | text_end += text_pad; | |
924 | ||
925 | /* Data. */ | |
926 | if (!obj_datasec(abfd)->user_set_vma) | |
927 | { | |
928 | bfd_vma vma; | |
929 | vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size; | |
930 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
931 | } | |
4c3721d5 ILT |
932 | if (abdp && abdp->zmagic_mapped_contiguous) |
933 | { | |
934 | text_pad = (obj_datasec(abfd)->vma | |
935 | - obj_textsec(abfd)->vma | |
936 | - obj_textsec(abfd)->_raw_size); | |
937 | obj_textsec(abfd)->_raw_size += text_pad; | |
938 | } | |
939 | obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos | |
940 | + obj_textsec(abfd)->_raw_size); | |
941 | ||
942 | /* Fix up exec header while we're at it. */ | |
943 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
944 | if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) | |
945 | execp->a_text += adata(abfd).exec_bytes_size; | |
f5419a59 ILT |
946 | if (obj_aout_subformat (abfd) == q_magic_format) |
947 | N_SET_MAGIC (*execp, QMAGIC); | |
948 | else | |
949 | N_SET_MAGIC (*execp, ZMAGIC); | |
5330499f | 950 | |
4c3721d5 | 951 | /* Spec says data section should be rounded up to page boundary. */ |
4c3721d5 ILT |
952 | obj_datasec(abfd)->_raw_size |
953 | = align_power (obj_datasec(abfd)->_raw_size, | |
954 | obj_bsssec(abfd)->alignment_power); | |
955 | execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size, | |
956 | adata(abfd).page_size); | |
957 | data_pad = execp->a_data - obj_datasec(abfd)->_raw_size; | |
958 | ||
959 | /* BSS. */ | |
960 | if (!obj_bsssec(abfd)->user_set_vma) | |
961 | obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma | |
962 | + obj_datasec(abfd)->_raw_size); | |
5330499f DM |
963 | /* If the BSS immediately follows the data section and extra space |
964 | in the page is left after the data section, fudge data | |
965 | in the header so that the bss section looks smaller by that | |
966 | amount. We'll start the bss section there, and lie to the OS. | |
967 | (Note that a linker script, as well as the above assignment, | |
968 | could have explicitly set the BSS vma to immediately follow | |
969 | the data section.) */ | |
970 | if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power) | |
971 | == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size) | |
972 | execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 : | |
973 | obj_bsssec(abfd)->_raw_size - data_pad; | |
974 | else | |
975 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
4c3721d5 ILT |
976 | } |
977 | ||
978 | static void | |
979 | adjust_n_magic (abfd, execp) | |
980 | bfd *abfd; | |
981 | struct internal_exec *execp; | |
982 | { | |
983 | file_ptr pos = adata(abfd).exec_bytes_size; | |
984 | bfd_vma vma = 0; | |
985 | int pad; | |
986 | ||
987 | /* Text. */ | |
988 | obj_textsec(abfd)->filepos = pos; | |
989 | if (!obj_textsec(abfd)->user_set_vma) | |
990 | obj_textsec(abfd)->vma = vma; | |
991 | else | |
992 | vma = obj_textsec(abfd)->vma; | |
993 | pos += obj_textsec(abfd)->_raw_size; | |
994 | vma += obj_textsec(abfd)->_raw_size; | |
995 | ||
996 | /* Data. */ | |
997 | obj_datasec(abfd)->filepos = pos; | |
998 | if (!obj_datasec(abfd)->user_set_vma) | |
999 | obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); | |
1000 | vma = obj_datasec(abfd)->vma; | |
1001 | ||
1002 | /* Since BSS follows data immediately, see if it needs alignment. */ | |
1003 | vma += obj_datasec(abfd)->_raw_size; | |
1004 | pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; | |
1005 | obj_datasec(abfd)->_raw_size += pad; | |
1006 | pos += obj_datasec(abfd)->_raw_size; | |
1007 | ||
1008 | /* BSS. */ | |
1009 | if (!obj_bsssec(abfd)->user_set_vma) | |
1010 | obj_bsssec(abfd)->vma = vma; | |
1011 | else | |
1012 | vma = obj_bsssec(abfd)->vma; | |
1013 | ||
1014 | /* Fix up exec header. */ | |
1015 | execp->a_text = obj_textsec(abfd)->_raw_size; | |
1016 | execp->a_data = obj_datasec(abfd)->_raw_size; | |
1017 | execp->a_bss = obj_bsssec(abfd)->_raw_size; | |
1018 | N_SET_MAGIC (*execp, NMAGIC); | |
1019 | } | |
1020 | ||
ce07dd7c | 1021 | boolean |
8eb5d4be JK |
1022 | NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end) |
1023 | bfd *abfd; | |
1024 | bfd_size_type *text_size; | |
1025 | file_ptr *text_end; | |
ce07dd7c KR |
1026 | { |
1027 | struct internal_exec *execp = exec_hdr (abfd); | |
4c3721d5 | 1028 | |
ec6b18c4 ILT |
1029 | if (! NAME(aout,make_sections) (abfd)) |
1030 | return false; | |
1031 | ||
f5419a59 ILT |
1032 | if (adata(abfd).magic != undecided_magic) |
1033 | return true; | |
4c3721d5 | 1034 | |
c188b0be | 1035 | obj_textsec(abfd)->_raw_size = |
ce07dd7c KR |
1036 | align_power(obj_textsec(abfd)->_raw_size, |
1037 | obj_textsec(abfd)->alignment_power); | |
1038 | ||
1039 | *text_size = obj_textsec (abfd)->_raw_size; | |
1040 | /* Rule (heuristic) for when to pad to a new page. Note that there | |
4c3721d5 ILT |
1041 | are (at least) two ways demand-paged (ZMAGIC) files have been |
1042 | handled. Most Berkeley-based systems start the text segment at | |
1043 | (PAGE_SIZE). However, newer versions of SUNOS start the text | |
1044 | segment right after the exec header; the latter is counted in the | |
1045 | text segment size, and is paged in by the kernel with the rest of | |
1046 | the text. */ | |
ce07dd7c KR |
1047 | |
1048 | /* This perhaps isn't the right way to do this, but made it simpler for me | |
1049 | to understand enough to implement it. Better would probably be to go | |
1050 | right from BFD flags to alignment/positioning characteristics. But the | |
1051 | old code was sloppy enough about handling the flags, and had enough | |
1052 | other magic, that it was a little hard for me to understand. I think | |
1053 | I understand it better now, but I haven't time to do the cleanup this | |
1054 | minute. */ | |
4c3721d5 ILT |
1055 | |
1056 | if (abfd->flags & D_PAGED) | |
1057 | /* Whether or not WP_TEXT is set -- let D_PAGED override. */ | |
4c3721d5 ILT |
1058 | adata(abfd).magic = z_magic; |
1059 | else if (abfd->flags & WP_TEXT) | |
1060 | adata(abfd).magic = n_magic; | |
1061 | else | |
1062 | adata(abfd).magic = o_magic; | |
ce07dd7c KR |
1063 | |
1064 | #ifdef BFD_AOUT_DEBUG /* requires gcc2 */ | |
1065 | #if __GNUC__ >= 2 | |
1066 | fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", | |
1067 | ({ char *str; | |
1068 | switch (adata(abfd).magic) { | |
1069 | case n_magic: str = "NMAGIC"; break; | |
1070 | case o_magic: str = "OMAGIC"; break; | |
1071 | case z_magic: str = "ZMAGIC"; break; | |
1072 | default: abort (); | |
1073 | } | |
1074 | str; | |
1075 | }), | |
4c3721d5 ILT |
1076 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, |
1077 | obj_textsec(abfd)->alignment_power, | |
1078 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, | |
1079 | obj_datasec(abfd)->alignment_power, | |
1080 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size, | |
1081 | obj_bsssec(abfd)->alignment_power); | |
ce07dd7c KR |
1082 | #endif |
1083 | #endif | |
1084 | ||
1085 | switch (adata(abfd).magic) | |
1086 | { | |
1087 | case o_magic: | |
4c3721d5 | 1088 | adjust_o_magic (abfd, execp); |
ce07dd7c KR |
1089 | break; |
1090 | case z_magic: | |
4c3721d5 | 1091 | adjust_z_magic (abfd, execp); |
ce07dd7c KR |
1092 | break; |
1093 | case n_magic: | |
4c3721d5 | 1094 | adjust_n_magic (abfd, execp); |
ce07dd7c KR |
1095 | break; |
1096 | default: | |
1097 | abort (); | |
1098 | } | |
4c3721d5 | 1099 | |
ce07dd7c KR |
1100 | #ifdef BFD_AOUT_DEBUG |
1101 | fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", | |
4c3721d5 ILT |
1102 | obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, |
1103 | obj_textsec(abfd)->filepos, | |
1104 | obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, | |
1105 | obj_datasec(abfd)->filepos, | |
ce07dd7c KR |
1106 | obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size); |
1107 | #endif | |
4c3721d5 | 1108 | |
d047d16a | 1109 | return true; |
ce07dd7c KR |
1110 | } |
1111 | ||
4e41b5aa SC |
1112 | /* |
1113 | FUNCTION | |
c188b0be | 1114 | aout_@var{size}_new_section_hook |
4e41b5aa | 1115 | |
fa2b89f1 | 1116 | SYNOPSIS |
c188b0be | 1117 | boolean aout_@var{size}_new_section_hook, |
9e2dad8e JG |
1118 | (bfd *abfd, |
1119 | asection *newsect)); | |
c188b0be DM |
1120 | |
1121 | DESCRIPTION | |
1122 | Called by the BFD in response to a @code{bfd_make_section} | |
1123 | request. | |
6f715d66 | 1124 | */ |
7ed4093a | 1125 | boolean |
8eb5d4be JK |
1126 | NAME(aout,new_section_hook) (abfd, newsect) |
1127 | bfd *abfd; | |
1128 | asection *newsect; | |
7ed4093a | 1129 | { |
6db82ea7 SC |
1130 | /* align to double at least */ |
1131 | newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; | |
3f7607af | 1132 | |
c188b0be DM |
1133 | |
1134 | if (bfd_get_format (abfd) == bfd_object) | |
6db82ea7 SC |
1135 | { |
1136 | if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) { | |
1137 | obj_textsec(abfd)= newsect; | |
e48f985c | 1138 | newsect->target_index = N_TEXT; |
6db82ea7 SC |
1139 | return true; |
1140 | } | |
c188b0be | 1141 | |
6db82ea7 SC |
1142 | if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) { |
1143 | obj_datasec(abfd) = newsect; | |
e48f985c | 1144 | newsect->target_index = N_DATA; |
6db82ea7 SC |
1145 | return true; |
1146 | } | |
c188b0be | 1147 | |
6db82ea7 SC |
1148 | if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) { |
1149 | obj_bsssec(abfd) = newsect; | |
e48f985c | 1150 | newsect->target_index = N_BSS; |
6db82ea7 SC |
1151 | return true; |
1152 | } | |
1153 | ||
1154 | } | |
c188b0be | 1155 | |
6db82ea7 SC |
1156 | /* We allow more than three sections internally */ |
1157 | return true; | |
7ed4093a SC |
1158 | } |
1159 | ||
1160 | boolean | |
8eb5d4be JK |
1161 | NAME(aout,set_section_contents) (abfd, section, location, offset, count) |
1162 | bfd *abfd; | |
1163 | sec_ptr section; | |
1164 | PTR location; | |
1165 | file_ptr offset; | |
1166 | bfd_size_type count; | |
7ed4093a | 1167 | { |
7b02b4ed | 1168 | file_ptr text_end; |
7b02b4ed | 1169 | bfd_size_type text_size; |
ce07dd7c | 1170 | |
773033d2 ILT |
1171 | if (! abfd->output_has_begun) |
1172 | { | |
1173 | if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) | |
1174 | return false; | |
1175 | } | |
12e7087f | 1176 | |
773033d2 ILT |
1177 | if (section == obj_bsssec (abfd)) |
1178 | { | |
1179 | bfd_set_error (bfd_error_no_contents); | |
1180 | return false; | |
1181 | } | |
1182 | ||
1183 | if (section != obj_textsec (abfd) | |
1184 | && section != obj_datasec (abfd)) | |
1185 | { | |
1186 | bfd_set_error (bfd_error_nonrepresentable_section); | |
1187 | return false; | |
1188 | } | |
1189 | ||
1190 | if (count != 0) | |
1191 | { | |
1192 | if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 | |
1193 | || bfd_write (location, 1, count, abfd) != count) | |
1194 | return false; | |
1195 | } | |
c188b0be | 1196 | |
7ed4093a SC |
1197 | return true; |
1198 | } | |
1199 | \f | |
5c8444f8 ILT |
1200 | /* Read the external symbols from an a.out file. */ |
1201 | ||
1202 | static boolean | |
1203 | aout_get_external_symbols (abfd) | |
1204 | bfd *abfd; | |
1205 | { | |
1206 | if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL) | |
1207 | { | |
1208 | bfd_size_type count; | |
1209 | struct external_nlist *syms; | |
1210 | ||
1211 | count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE; | |
1212 | ||
1213 | /* We allocate using malloc to make the values easy to free | |
1214 | later on. If we put them on the obstack it might not be | |
1215 | possible to free them. */ | |
1216 | syms = ((struct external_nlist *) | |
1217 | malloc ((size_t) count * EXTERNAL_NLIST_SIZE)); | |
1218 | if (syms == (struct external_nlist *) NULL && count != 0) | |
1219 | { | |
1220 | bfd_set_error (bfd_error_no_memory); | |
1221 | return false; | |
1222 | } | |
1223 | ||
1224 | if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 | |
1225 | || (bfd_read (syms, 1, exec_hdr (abfd)->a_syms, abfd) | |
1226 | != exec_hdr (abfd)->a_syms)) | |
1227 | { | |
1228 | free (syms); | |
1229 | return false; | |
1230 | } | |
1231 | ||
1232 | obj_aout_external_syms (abfd) = syms; | |
1233 | obj_aout_external_sym_count (abfd) = count; | |
1234 | } | |
1235 | ||
4f019d04 ILT |
1236 | if (obj_aout_external_strings (abfd) == NULL |
1237 | && exec_hdr (abfd)->a_syms != 0) | |
5c8444f8 ILT |
1238 | { |
1239 | unsigned char string_chars[BYTES_IN_WORD]; | |
1240 | bfd_size_type stringsize; | |
1241 | char *strings; | |
1242 | ||
1243 | /* Get the size of the strings. */ | |
1244 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 | |
1245 | || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd) | |
1246 | != BYTES_IN_WORD)) | |
1247 | return false; | |
1248 | stringsize = GET_WORD (abfd, string_chars); | |
1249 | ||
1250 | strings = (char *) malloc ((size_t) stringsize + 1); | |
1251 | if (strings == NULL) | |
1252 | { | |
1253 | bfd_set_error (bfd_error_no_memory); | |
1254 | return false; | |
1255 | } | |
1256 | ||
1257 | /* Skip space for the string count in the buffer for convenience | |
1258 | when using indexes. */ | |
1259 | if (bfd_read (strings + BYTES_IN_WORD, 1, stringsize - BYTES_IN_WORD, | |
1260 | abfd) | |
1261 | != stringsize - BYTES_IN_WORD) | |
1262 | { | |
1263 | free (strings); | |
1264 | return false; | |
1265 | } | |
1266 | ||
1afd2380 ILT |
1267 | /* Ensure that a zero index yields an empty string. */ |
1268 | strings[0] = '\0'; | |
1269 | ||
5c8444f8 ILT |
1270 | /* Sanity preservation. */ |
1271 | strings[stringsize] = '\0'; | |
1272 | ||
1273 | obj_aout_external_strings (abfd) = strings; | |
1274 | obj_aout_external_string_size (abfd) = stringsize; | |
1275 | } | |
1276 | ||
1277 | return true; | |
1278 | } | |
1279 | ||
4298e311 ILT |
1280 | /* Translate an a.out symbol into a BFD symbol. The desc, other, type |
1281 | and symbol->value fields of CACHE_PTR will be set from the a.out | |
1282 | nlist structure. This function is responsible for setting | |
1283 | symbol->flags and symbol->section, and adjusting symbol->value. */ | |
c188b0be | 1284 | |
9783e04a | 1285 | static boolean |
4298e311 ILT |
1286 | translate_from_native_sym_flags (abfd, cache_ptr) |
1287 | bfd *abfd; | |
1288 | aout_symbol_type *cache_ptr; | |
9e2dad8e | 1289 | { |
4298e311 ILT |
1290 | flagword visible; |
1291 | ||
1292 | if ((cache_ptr->type & N_STAB) != 0 | |
1293 | || cache_ptr->type == N_FN) | |
1294 | { | |
1295 | asection *sec; | |
1296 | ||
1297 | /* This is a debugging symbol. */ | |
1298 | ||
1299 | cache_ptr->symbol.flags = BSF_DEBUGGING; | |
1300 | ||
1301 | /* Work out the symbol section. */ | |
1302 | switch (cache_ptr->type & N_TYPE) | |
1303 | { | |
1304 | case N_TEXT: | |
1305 | case N_FN: | |
1306 | sec = obj_textsec (abfd); | |
1307 | break; | |
1308 | case N_DATA: | |
1309 | sec = obj_datasec (abfd); | |
1310 | break; | |
1311 | case N_BSS: | |
1312 | sec = obj_bsssec (abfd); | |
1313 | break; | |
1314 | default: | |
1315 | case N_ABS: | |
4587b578 | 1316 | sec = bfd_abs_section_ptr; |
4298e311 ILT |
1317 | break; |
1318 | } | |
1319 | ||
1320 | cache_ptr->symbol.section = sec; | |
1321 | cache_ptr->symbol.value -= sec->vma; | |
1322 | ||
1323 | return true; | |
1324 | } | |
1325 | ||
1326 | /* Get the default visibility. This does not apply to all types, so | |
1327 | we just hold it in a local variable to use if wanted. */ | |
1328 | if ((cache_ptr->type & N_EXT) == 0) | |
1329 | visible = BSF_LOCAL; | |
1330 | else | |
1331 | visible = BSF_GLOBAL; | |
1332 | ||
1333 | switch (cache_ptr->type) | |
6db82ea7 | 1334 | { |
4298e311 ILT |
1335 | default: |
1336 | case N_ABS: case N_ABS | N_EXT: | |
4587b578 | 1337 | cache_ptr->symbol.section = bfd_abs_section_ptr; |
4298e311 ILT |
1338 | cache_ptr->symbol.flags = visible; |
1339 | break; | |
1340 | ||
1341 | case N_UNDF | N_EXT: | |
1342 | if (cache_ptr->symbol.value != 0) | |
1343 | { | |
1344 | /* This is a common symbol. */ | |
1345 | cache_ptr->symbol.flags = BSF_GLOBAL; | |
4587b578 | 1346 | cache_ptr->symbol.section = bfd_com_section_ptr; |
4298e311 ILT |
1347 | } |
1348 | else | |
1349 | { | |
1350 | cache_ptr->symbol.flags = 0; | |
4587b578 | 1351 | cache_ptr->symbol.section = bfd_und_section_ptr; |
4298e311 ILT |
1352 | } |
1353 | break; | |
1354 | ||
1355 | case N_TEXT: case N_TEXT | N_EXT: | |
1356 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1357 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1358 | cache_ptr->symbol.flags = visible; | |
1359 | break; | |
1360 | ||
2cd086e3 ILT |
1361 | /* N_SETV symbols used to represent set vectors placed in the |
1362 | data section. They are no longer generated. Theoretically, | |
1363 | it was possible to extract the entries and combine them with | |
1364 | new ones, although I don't know if that was ever actually | |
1365 | done. Unless that feature is restored, treat them as data | |
1366 | symbols. */ | |
1367 | case N_SETV: case N_SETV | N_EXT: | |
4298e311 ILT |
1368 | case N_DATA: case N_DATA | N_EXT: |
1369 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1370 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1371 | cache_ptr->symbol.flags = visible; | |
1372 | break; | |
1373 | ||
1374 | case N_BSS: case N_BSS | N_EXT: | |
1375 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1376 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1377 | cache_ptr->symbol.flags = visible; | |
1378 | break; | |
1379 | ||
964affdc DM |
1380 | case N_SETA: case N_SETA | N_EXT: |
1381 | case N_SETT: case N_SETT | N_EXT: | |
1382 | case N_SETD: case N_SETD | N_EXT: | |
1383 | case N_SETB: case N_SETB | N_EXT: | |
ebd24135 | 1384 | { |
ebd24135 | 1385 | asection *section; |
4298e311 | 1386 | arelent_chain *reloc; |
ebd24135 | 1387 | asection *into_section; |
9783e04a | 1388 | |
4298e311 ILT |
1389 | /* This is a set symbol. The name of the symbol is the name |
1390 | of the set (e.g., __CTOR_LIST__). The value of the symbol | |
1391 | is the value to add to the set. We create a section with | |
1392 | the same name as the symbol, and add a reloc to insert the | |
1393 | appropriate value into the section. | |
1394 | ||
1395 | This action is actually obsolete; it used to make the | |
1396 | linker do the right thing, but the linker no longer uses | |
1397 | this function. */ | |
1398 | ||
1399 | section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name); | |
1400 | if (section == NULL) | |
1401 | { | |
1402 | char *copy; | |
1403 | ||
1404 | copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1); | |
1405 | if (copy == NULL) | |
1406 | { | |
1407 | bfd_set_error (bfd_error_no_memory); | |
1408 | return false; | |
1409 | } | |
1410 | ||
1411 | strcpy (copy, cache_ptr->symbol.name); | |
1412 | section = bfd_make_section (abfd, copy); | |
1413 | if (section == NULL) | |
1414 | return false; | |
1415 | } | |
1416 | ||
1417 | reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain)); | |
1418 | if (reloc == NULL) | |
9783e04a | 1419 | { |
68241b2b | 1420 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
1421 | return false; |
1422 | } | |
1423 | ||
4298e311 ILT |
1424 | /* Build a relocation entry for the constructor. */ |
1425 | switch (cache_ptr->type & N_TYPE) | |
a99c3d70 | 1426 | { |
4298e311 | 1427 | case N_SETA: |
4587b578 | 1428 | into_section = bfd_abs_section_ptr; |
ebd24135 ILT |
1429 | cache_ptr->type = N_ABS; |
1430 | break; | |
4298e311 ILT |
1431 | case N_SETT: |
1432 | into_section = obj_textsec (abfd); | |
ebd24135 ILT |
1433 | cache_ptr->type = N_TEXT; |
1434 | break; | |
4298e311 ILT |
1435 | case N_SETD: |
1436 | into_section = obj_datasec (abfd); | |
ebd24135 ILT |
1437 | cache_ptr->type = N_DATA; |
1438 | break; | |
4298e311 ILT |
1439 | case N_SETB: |
1440 | into_section = obj_bsssec (abfd); | |
ebd24135 ILT |
1441 | cache_ptr->type = N_BSS; |
1442 | break; | |
ebd24135 | 1443 | } |
88dfcd68 | 1444 | |
4298e311 ILT |
1445 | /* Build a relocation pointing into the constructor section |
1446 | pointing at the symbol in the set vector specified. */ | |
ebd24135 | 1447 | reloc->relent.addend = cache_ptr->symbol.value; |
4298e311 | 1448 | cache_ptr->symbol.section = into_section; |
ebd24135 | 1449 | reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr; |
6db82ea7 | 1450 | |
4298e311 ILT |
1451 | /* We modify the symbol to belong to a section depending upon |
1452 | the name of the symbol, and add to the size of the section | |
1453 | to contain a pointer to the symbol. Build a reloc entry to | |
1454 | relocate to this symbol attached to this section. */ | |
a8a916c8 | 1455 | section->flags = SEC_CONSTRUCTOR | SEC_RELOC; |
a99c3d70 | 1456 | |
ebd24135 ILT |
1457 | section->reloc_count++; |
1458 | section->alignment_power = 2; | |
a99c3d70 | 1459 | |
ebd24135 ILT |
1460 | reloc->next = section->constructor_chain; |
1461 | section->constructor_chain = reloc; | |
1462 | reloc->relent.address = section->_raw_size; | |
4298e311 ILT |
1463 | section->_raw_size += BYTES_IN_WORD; |
1464 | ||
f42fe159 | 1465 | reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd); |
a99c3d70 | 1466 | |
ebd24135 ILT |
1467 | cache_ptr->symbol.flags |= BSF_CONSTRUCTOR; |
1468 | } | |
1469 | break; | |
0c205af2 | 1470 | |
4298e311 ILT |
1471 | case N_WARNING: |
1472 | /* This symbol is the text of a warning message. The next | |
1473 | symbol is the symbol to associate the warning with. If a | |
1474 | reference is made to that symbol, a warning is issued. */ | |
1475 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; | |
ebd24135 | 1476 | |
4298e311 ILT |
1477 | /* @@ Stuffing pointers into integers is a no-no. We can |
1478 | usually get away with it if the integer is large enough | |
1479 | though. */ | |
1480 | if (sizeof (cache_ptr + 1) > sizeof (bfd_vma)) | |
1481 | abort (); | |
1482 | cache_ptr->symbol.value = (bfd_vma) (cache_ptr + 1); | |
ebd24135 | 1483 | |
4587b578 | 1484 | cache_ptr->symbol.section = bfd_abs_section_ptr; |
ebd24135 | 1485 | |
4298e311 | 1486 | break; |
ebd24135 | 1487 | |
4298e311 ILT |
1488 | case N_INDR: case N_INDR | N_EXT: |
1489 | /* An indirect symbol. This consists of two symbols in a row. | |
1490 | The first symbol is the name of the indirection. The second | |
1491 | symbol is the name of the target. A reference to the first | |
1492 | symbol becomes a reference to the second. */ | |
1493 | cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible; | |
ebd24135 | 1494 | |
4298e311 ILT |
1495 | /* @@ Stuffing pointers into integers is a no-no. We can |
1496 | usually get away with it if the integer is large enough | |
1497 | though. */ | |
1498 | if (sizeof (cache_ptr + 1) > sizeof (bfd_vma)) | |
1499 | abort (); | |
1500 | cache_ptr->symbol.value = (bfd_vma) (cache_ptr + 1); | |
ebd24135 | 1501 | |
4587b578 | 1502 | cache_ptr->symbol.section = bfd_ind_section_ptr; |
a99c3d70 | 1503 | |
4298e311 ILT |
1504 | break; |
1505 | ||
1506 | case N_WEAKU: | |
4587b578 | 1507 | cache_ptr->symbol.section = bfd_und_section_ptr; |
4298e311 ILT |
1508 | cache_ptr->symbol.flags = BSF_WEAK; |
1509 | break; | |
1510 | ||
1511 | case N_WEAKA: | |
4587b578 | 1512 | cache_ptr->symbol.section = bfd_abs_section_ptr; |
4298e311 ILT |
1513 | cache_ptr->symbol.flags = BSF_WEAK; |
1514 | break; | |
1515 | ||
1516 | case N_WEAKT: | |
1517 | cache_ptr->symbol.section = obj_textsec (abfd); | |
1518 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1519 | cache_ptr->symbol.flags = BSF_WEAK; | |
1520 | break; | |
1521 | ||
1522 | case N_WEAKD: | |
1523 | cache_ptr->symbol.section = obj_datasec (abfd); | |
1524 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1525 | cache_ptr->symbol.flags = BSF_WEAK; | |
1526 | break; | |
1527 | ||
1528 | case N_WEAKB: | |
1529 | cache_ptr->symbol.section = obj_bsssec (abfd); | |
1530 | cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; | |
1531 | cache_ptr->symbol.flags = BSF_WEAK; | |
1532 | break; | |
a99c3d70 | 1533 | } |
4298e311 | 1534 | |
9783e04a | 1535 | return true; |
7ed4093a SC |
1536 | } |
1537 | ||
4298e311 | 1538 | /* Set the fields of SYM_POINTER according to CACHE_PTR. */ |
6db82ea7 | 1539 | |
4c3721d5 | 1540 | static boolean |
4298e311 | 1541 | translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer) |
8eb5d4be | 1542 | bfd *abfd; |
4298e311 ILT |
1543 | asymbol *cache_ptr; |
1544 | struct external_nlist *sym_pointer; | |
7ed4093a SC |
1545 | { |
1546 | bfd_vma value = cache_ptr->value; | |
943fbd5b KR |
1547 | asection *sec; |
1548 | bfd_vma off; | |
7ed4093a | 1549 | |
4298e311 ILT |
1550 | /* Mask out any existing type bits in case copying from one section |
1551 | to another. */ | |
10dea9ed | 1552 | sym_pointer->e_type[0] &= ~N_TYPE; |
a99c3d70 | 1553 | |
943fbd5b KR |
1554 | sec = bfd_get_section (cache_ptr); |
1555 | off = 0; | |
1556 | ||
1557 | if (sec == NULL) | |
4298e311 | 1558 | { |
943fbd5b KR |
1559 | /* This case occurs, e.g., for the *DEBUG* section of a COFF |
1560 | file. */ | |
4298e311 ILT |
1561 | bfd_set_error (bfd_error_nonrepresentable_section); |
1562 | return false; | |
1563 | } | |
943fbd5b KR |
1564 | |
1565 | if (sec->output_section != NULL) | |
1566 | { | |
1567 | off = sec->output_offset; | |
1568 | sec = sec->output_section; | |
1569 | } | |
1570 | ||
1571 | if (bfd_is_abs_section (sec)) | |
1572 | sym_pointer->e_type[0] |= N_ABS; | |
1573 | else if (sec == obj_textsec (abfd)) | |
1574 | sym_pointer->e_type[0] |= N_TEXT; | |
1575 | else if (sec == obj_datasec (abfd)) | |
1576 | sym_pointer->e_type[0] |= N_DATA; | |
1577 | else if (sec == obj_bsssec (abfd)) | |
1578 | sym_pointer->e_type[0] |= N_BSS; | |
1579 | else if (bfd_is_und_section (sec)) | |
4587b578 | 1580 | sym_pointer->e_type[0] = N_UNDF | N_EXT; |
943fbd5b | 1581 | else if (bfd_is_ind_section (sec)) |
4587b578 | 1582 | sym_pointer->e_type[0] = N_INDR; |
943fbd5b | 1583 | else if (bfd_is_com_section (sec)) |
4298e311 ILT |
1584 | sym_pointer->e_type[0] = N_UNDF | N_EXT; |
1585 | else | |
1586 | { | |
1587 | bfd_set_error (bfd_error_nonrepresentable_section); | |
1588 | return false; | |
1589 | } | |
6f56c941 | 1590 | |
6db82ea7 | 1591 | /* Turn the symbol from section relative to absolute again */ |
943fbd5b | 1592 | value += sec->vma + off; |
c188b0be | 1593 | |
4298e311 | 1594 | if ((cache_ptr->flags & BSF_WARNING) != 0) |
d7e34f67 | 1595 | sym_pointer->e_type[0] = N_WARNING; |
c188b0be | 1596 | |
4298e311 ILT |
1597 | if ((cache_ptr->flags & BSF_DEBUGGING) != 0) |
1598 | sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; | |
1599 | else if ((cache_ptr->flags & BSF_GLOBAL) != 0) | |
3caa6924 | 1600 | sym_pointer->e_type[0] |= N_EXT; |
4298e311 ILT |
1601 | |
1602 | if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0) | |
1603 | { | |
1604 | int type = ((aout_symbol_type *) cache_ptr)->type; | |
1605 | switch (type) | |
1606 | { | |
1607 | case N_ABS: type = N_SETA; break; | |
1608 | case N_TEXT: type = N_SETT; break; | |
1609 | case N_DATA: type = N_SETD; break; | |
1610 | case N_BSS: type = N_SETB; break; | |
1611 | } | |
1612 | sym_pointer->e_type[0] = type; | |
1613 | } | |
1614 | ||
1615 | if ((cache_ptr->flags & BSF_WEAK) != 0) | |
1616 | { | |
1617 | int type; | |
1618 | ||
1619 | switch (sym_pointer->e_type[0] & N_TYPE) | |
1620 | { | |
1621 | default: | |
1622 | case N_ABS: type = N_WEAKA; break; | |
1623 | case N_TEXT: type = N_WEAKT; break; | |
1624 | case N_DATA: type = N_WEAKD; break; | |
1625 | case N_BSS: type = N_WEAKB; break; | |
1626 | case N_UNDF: type = N_WEAKU; break; | |
1627 | } | |
1628 | sym_pointer->e_type[0] = type; | |
1629 | } | |
6db82ea7 | 1630 | |
7ed4093a | 1631 | PUT_WORD(abfd, value, sym_pointer->e_value); |
4c3721d5 ILT |
1632 | |
1633 | return true; | |
7ed4093a SC |
1634 | } |
1635 | \f | |
1636 | /* Native-level interface to symbols. */ | |
1637 | ||
7ed4093a | 1638 | asymbol * |
8eb5d4be JK |
1639 | NAME(aout,make_empty_symbol) (abfd) |
1640 | bfd *abfd; | |
9e2dad8e JG |
1641 | { |
1642 | aout_symbol_type *new = | |
1643 | (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type)); | |
9783e04a DM |
1644 | if (!new) |
1645 | { | |
68241b2b | 1646 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
1647 | return NULL; |
1648 | } | |
9e2dad8e | 1649 | new->symbol.the_bfd = abfd; |
fa2b89f1 | 1650 | |
9e2dad8e JG |
1651 | return &new->symbol; |
1652 | } | |
7ed4093a | 1653 | |
0ee75d02 ILT |
1654 | /* Translate a set of internal symbols into external symbols. */ |
1655 | ||
fa77c704 ILT |
1656 | boolean |
1657 | NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic) | |
0ee75d02 ILT |
1658 | bfd *abfd; |
1659 | aout_symbol_type *in; | |
1660 | struct external_nlist *ext; | |
1661 | bfd_size_type count; | |
1662 | char *str; | |
1663 | bfd_size_type strsize; | |
1664 | boolean dynamic; | |
1665 | { | |
1666 | struct external_nlist *ext_end; | |
1667 | ||
1668 | ext_end = ext + count; | |
1669 | for (; ext < ext_end; ext++, in++) | |
1670 | { | |
1671 | bfd_vma x; | |
1672 | ||
1673 | x = GET_WORD (abfd, ext->e_strx); | |
1674 | in->symbol.the_bfd = abfd; | |
ca1c6bec ILT |
1675 | |
1676 | /* For the normal symbols, the zero index points at the number | |
1677 | of bytes in the string table but is to be interpreted as the | |
1678 | null string. For the dynamic symbols, the number of bytes in | |
1679 | the string table is stored in the __DYNAMIC structure and the | |
1680 | zero index points at an actual string. */ | |
1681 | if (x == 0 && ! dynamic) | |
1682 | in->symbol.name = ""; | |
1683 | else if (x < strsize) | |
0ee75d02 ILT |
1684 | in->symbol.name = str + x; |
1685 | else | |
1686 | return false; | |
1687 | ||
1688 | in->symbol.value = GET_SWORD (abfd, ext->e_value); | |
1689 | in->desc = bfd_h_get_16 (abfd, ext->e_desc); | |
1690 | in->other = bfd_h_get_8 (abfd, ext->e_other); | |
1691 | in->type = bfd_h_get_8 (abfd, ext->e_type); | |
74942465 | 1692 | in->symbol.udata.p = NULL; |
0ee75d02 | 1693 | |
4298e311 | 1694 | if (! translate_from_native_sym_flags (abfd, in)) |
9783e04a | 1695 | return false; |
0ee75d02 ILT |
1696 | |
1697 | if (dynamic) | |
1698 | in->symbol.flags |= BSF_DYNAMIC; | |
1699 | } | |
1700 | ||
1701 | return true; | |
1702 | } | |
1703 | ||
1704 | /* We read the symbols into a buffer, which is discarded when this | |
1705 | function exits. We read the strings into a buffer large enough to | |
1706 | hold them all plus all the cached symbol entries. */ | |
1707 | ||
7ed4093a | 1708 | boolean |
8eb5d4be JK |
1709 | NAME(aout,slurp_symbol_table) (abfd) |
1710 | bfd *abfd; | |
9e2dad8e | 1711 | { |
5c8444f8 | 1712 | struct external_nlist *old_external_syms; |
9e2dad8e | 1713 | aout_symbol_type *cached; |
5c8444f8 | 1714 | size_t cached_size; |
0f213cc2 | 1715 | |
9e2dad8e | 1716 | /* If there's no work to be done, don't do any */ |
5c8444f8 ILT |
1717 | if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL) |
1718 | return true; | |
1719 | ||
1720 | old_external_syms = obj_aout_external_syms (abfd); | |
1721 | ||
1722 | if (! aout_get_external_symbols (abfd)) | |
1723 | return false; | |
1724 | ||
fa77c704 | 1725 | cached_size = (obj_aout_external_sym_count (abfd) |
5c8444f8 ILT |
1726 | * sizeof (aout_symbol_type)); |
1727 | cached = (aout_symbol_type *) malloc (cached_size); | |
74942465 | 1728 | if (cached == NULL && cached_size != 0) |
9783e04a | 1729 | { |
68241b2b | 1730 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
1731 | return false; |
1732 | } | |
74942465 ILT |
1733 | if (cached_size != 0) |
1734 | memset (cached, 0, cached_size); | |
5c8444f8 ILT |
1735 | |
1736 | /* Convert from external symbol information to internal. */ | |
fa77c704 ILT |
1737 | if (! (NAME(aout,translate_symbol_table) |
1738 | (abfd, cached, | |
1739 | obj_aout_external_syms (abfd), | |
1740 | obj_aout_external_sym_count (abfd), | |
1741 | obj_aout_external_strings (abfd), | |
1742 | obj_aout_external_string_size (abfd), | |
1743 | false))) | |
0f213cc2 | 1744 | { |
5c8444f8 | 1745 | free (cached); |
0f213cc2 KR |
1746 | return false; |
1747 | } | |
1748 | ||
fa77c704 | 1749 | bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd); |
0f213cc2 | 1750 | |
5c8444f8 | 1751 | obj_aout_symbols (abfd) = cached; |
0f213cc2 | 1752 | |
5c8444f8 ILT |
1753 | /* It is very likely that anybody who calls this function will not |
1754 | want the external symbol information, so if it was allocated | |
1755 | because of our call to aout_get_external_symbols, we free it up | |
1756 | right away to save space. */ | |
1757 | if (old_external_syms == (struct external_nlist *) NULL | |
1758 | && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) | |
1759 | { | |
1760 | free (obj_aout_external_syms (abfd)); | |
1761 | obj_aout_external_syms (abfd) = NULL; | |
0ee75d02 | 1762 | } |
0f213cc2 | 1763 | |
9e2dad8e JG |
1764 | return true; |
1765 | } | |
0f213cc2 | 1766 | \f |
d17fc4c9 ILT |
1767 | /* We use a hash table when writing out symbols so that we only write |
1768 | out a particular string once. This helps particularly when the | |
1769 | linker writes out stabs debugging entries, because each different | |
1770 | contributing object file tends to have many duplicate stabs | |
1771 | strings. | |
1772 | ||
d63d0479 ILT |
1773 | This hash table code breaks dbx on SunOS 4.1.3, so we don't do it |
1774 | if BFD_TRADITIONAL_FORMAT is set. */ | |
0f213cc2 | 1775 | |
d17fc4c9 | 1776 | static bfd_size_type add_to_stringtab |
1afd2380 ILT |
1777 | PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean)); |
1778 | static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *)); | |
d17fc4c9 ILT |
1779 | |
1780 | /* Get the index of a string in a strtab, adding it if it is not | |
1afd2380 | 1781 | already present. */ |
d17fc4c9 ILT |
1782 | |
1783 | static INLINE bfd_size_type | |
1784 | add_to_stringtab (abfd, tab, str, copy) | |
0f213cc2 | 1785 | bfd *abfd; |
1afd2380 | 1786 | struct bfd_strtab_hash *tab; |
d17fc4c9 ILT |
1787 | const char *str; |
1788 | boolean copy; | |
0f213cc2 | 1789 | { |
1afd2380 | 1790 | boolean hash; |
435b470e | 1791 | bfd_size_type index; |
0f213cc2 | 1792 | |
d17fc4c9 | 1793 | /* An index of 0 always means the empty string. */ |
204ba9e3 | 1794 | if (str == 0 || *str == '\0') |
d17fc4c9 | 1795 | return 0; |
0f213cc2 | 1796 | |
1afd2380 ILT |
1797 | /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx |
1798 | doesn't understand a hashed string table. */ | |
1799 | hash = true; | |
1800 | if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) | |
1801 | hash = false; | |
0f213cc2 | 1802 | |
435b470e ILT |
1803 | index = _bfd_stringtab_add (tab, str, hash, copy); |
1804 | ||
1805 | if (index != (bfd_size_type) -1) | |
1806 | { | |
1807 | /* Add BYTES_IN_WORD to the return value to account for the | |
1808 | space taken up by the string table size. */ | |
1809 | index += BYTES_IN_WORD; | |
1810 | } | |
1811 | ||
1812 | return index; | |
0f213cc2 KR |
1813 | } |
1814 | ||
d17fc4c9 ILT |
1815 | /* Write out a strtab. ABFD is already at the right location in the |
1816 | file. */ | |
1817 | ||
29e626eb | 1818 | static boolean |
d17fc4c9 ILT |
1819 | emit_stringtab (abfd, tab) |
1820 | register bfd *abfd; | |
1afd2380 | 1821 | struct bfd_strtab_hash *tab; |
0f213cc2 | 1822 | { |
d17fc4c9 | 1823 | bfd_byte buffer[BYTES_IN_WORD]; |
0f213cc2 | 1824 | |
1afd2380 ILT |
1825 | /* The string table starts with the size. */ |
1826 | PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer); | |
29e626eb ILT |
1827 | if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD) |
1828 | return false; | |
0f213cc2 | 1829 | |
1afd2380 | 1830 | return _bfd_stringtab_emit (abfd, tab); |
0f213cc2 | 1831 | } |
d17fc4c9 | 1832 | \f |
4c3721d5 | 1833 | boolean |
8eb5d4be JK |
1834 | NAME(aout,write_syms) (abfd) |
1835 | bfd *abfd; | |
0f213cc2 KR |
1836 | { |
1837 | unsigned int count ; | |
1838 | asymbol **generic = bfd_get_outsymbols (abfd); | |
1afd2380 | 1839 | struct bfd_strtab_hash *strtab; |
0f213cc2 | 1840 | |
1afd2380 ILT |
1841 | strtab = _bfd_stringtab_init (); |
1842 | if (strtab == NULL) | |
d17fc4c9 | 1843 | return false; |
0f213cc2 KR |
1844 | |
1845 | for (count = 0; count < bfd_get_symcount (abfd); count++) | |
1846 | { | |
7ed4093a | 1847 | asymbol *g = generic[count]; |
d17fc4c9 | 1848 | bfd_size_type indx; |
7ed4093a | 1849 | struct external_nlist nsp; |
6db82ea7 | 1850 | |
1afd2380 | 1851 | indx = add_to_stringtab (abfd, strtab, g->name, false); |
d17fc4c9 ILT |
1852 | if (indx == (bfd_size_type) -1) |
1853 | goto error_return; | |
1854 | PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx); | |
6db82ea7 | 1855 | |
0f213cc2 KR |
1856 | if (bfd_asymbol_flavour(g) == abfd->xvec->flavour) |
1857 | { | |
1858 | bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc); | |
1859 | bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other); | |
1860 | bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type); | |
1861 | } | |
7ed4093a | 1862 | else |
0f213cc2 KR |
1863 | { |
1864 | bfd_h_put_16(abfd,0, nsp.e_desc); | |
1865 | bfd_h_put_8(abfd, 0, nsp.e_other); | |
1866 | bfd_h_put_8(abfd, 0, nsp.e_type); | |
1867 | } | |
7b02b4ed | 1868 | |
4298e311 | 1869 | if (! translate_to_native_sym_flags (abfd, g, &nsp)) |
d17fc4c9 | 1870 | goto error_return; |
7b02b4ed | 1871 | |
4c3721d5 ILT |
1872 | if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd) |
1873 | != EXTERNAL_NLIST_SIZE) | |
d17fc4c9 | 1874 | goto error_return; |
7ed4093a | 1875 | |
0f213cc2 KR |
1876 | /* NB: `KEEPIT' currently overlays `flags', so set this only |
1877 | here, at the end. */ | |
1878 | g->KEEPIT = count; | |
1879 | } | |
7ed4093a | 1880 | |
1afd2380 | 1881 | if (! emit_stringtab (abfd, strtab)) |
d17fc4c9 ILT |
1882 | goto error_return; |
1883 | ||
1afd2380 | 1884 | _bfd_stringtab_free (strtab); |
d17fc4c9 ILT |
1885 | |
1886 | return true; | |
1887 | ||
1888 | error_return: | |
1afd2380 | 1889 | _bfd_stringtab_free (strtab); |
d17fc4c9 | 1890 | return false; |
0f213cc2 | 1891 | } |
7ed4093a | 1892 | |
0f213cc2 | 1893 | \f |
326e32d7 | 1894 | long |
8eb5d4be JK |
1895 | NAME(aout,get_symtab) (abfd, location) |
1896 | bfd *abfd; | |
1897 | asymbol **location; | |
3f7607af | 1898 | { |
7ed4093a SC |
1899 | unsigned int counter = 0; |
1900 | aout_symbol_type *symbase; | |
ce07dd7c | 1901 | |
326e32d7 ILT |
1902 | if (!NAME(aout,slurp_symbol_table)(abfd)) |
1903 | return -1; | |
ce07dd7c | 1904 | |
7ed4093a SC |
1905 | for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);) |
1906 | *(location++) = (asymbol *)( symbase++); | |
1907 | *location++ =0; | |
ce07dd7c | 1908 | return bfd_get_symcount (abfd); |
3f7607af | 1909 | } |
7ed4093a SC |
1910 | |
1911 | \f | |
1912 | /* Standard reloc stuff */ | |
1913 | /* Output standard relocation information to a file in target byte order. */ | |
1914 | ||
1915 | void | |
8eb5d4be JK |
1916 | NAME(aout,swap_std_reloc_out) (abfd, g, natptr) |
1917 | bfd *abfd; | |
1918 | arelent *g; | |
1919 | struct reloc_std_external *natptr; | |
3f7607af | 1920 | { |
6db82ea7 SC |
1921 | int r_index; |
1922 | asymbol *sym = *(g->sym_ptr_ptr); | |
1923 | int r_extern; | |
1924 | unsigned int r_length; | |
1925 | int r_pcrel; | |
1926 | int r_baserel, r_jmptable, r_relative; | |
6db82ea7 | 1927 | asection *output_section = sym->section->output_section; |
ce07dd7c | 1928 | |
6db82ea7 | 1929 | PUT_WORD(abfd, g->address, natptr->r_address); |
ce07dd7c | 1930 | |
6db82ea7 SC |
1931 | r_length = g->howto->size ; /* Size as a power of two */ |
1932 | r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ | |
c188b0be DM |
1933 | /* XXX This relies on relocs coming from a.out files. */ |
1934 | r_baserel = (g->howto->type & 8) != 0; | |
cb9461ff JK |
1935 | r_jmptable = (g->howto->type & 16) != 0; |
1936 | r_relative = (g->howto->type & 32) != 0; | |
c188b0be | 1937 | |
728472f1 ILT |
1938 | #if 0 |
1939 | /* For a standard reloc, the addend is in the object file. */ | |
6db82ea7 | 1940 | r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; |
728472f1 | 1941 | #endif |
c188b0be | 1942 | |
6db82ea7 SC |
1943 | /* name was clobbered by aout_write_syms to be symbol index */ |
1944 | ||
c188b0be | 1945 | /* If this relocation is relative to a symbol then set the |
2768b3f7 SC |
1946 | r_index to the symbols index, and the r_extern bit. |
1947 | ||
1948 | Absolute symbols can come in in two ways, either as an offset | |
1949 | from the abs section, or as a symbol which has an abs value. | |
1950 | check for that here | |
1951 | */ | |
c188b0be | 1952 | |
2768b3f7 | 1953 | |
382f2a3d | 1954 | if (bfd_is_com_section (output_section) |
4587b578 ILT |
1955 | || bfd_is_abs_section (output_section) |
1956 | || bfd_is_und_section (output_section)) | |
ce07dd7c | 1957 | { |
4587b578 | 1958 | if (bfd_abs_section_ptr->symbol == sym) |
2768b3f7 SC |
1959 | { |
1960 | /* Whoops, looked like an abs symbol, but is really an offset | |
1961 | from the abs section */ | |
1962 | r_index = 0; | |
1963 | r_extern = 0; | |
1964 | } | |
c188b0be | 1965 | else |
2768b3f7 SC |
1966 | { |
1967 | /* Fill in symbol */ | |
1968 | r_extern = 1; | |
1969 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); | |
c188b0be | 1970 | |
2768b3f7 | 1971 | } |
ce07dd7c | 1972 | } |
c188b0be | 1973 | else |
ce07dd7c KR |
1974 | { |
1975 | /* Just an ordinary section */ | |
1976 | r_extern = 0; | |
c188b0be | 1977 | r_index = output_section->target_index; |
ce07dd7c KR |
1978 | } |
1979 | ||
6db82ea7 SC |
1980 | /* now the fun stuff */ |
1981 | if (abfd->xvec->header_byteorder_big_p != false) { | |
7ed4093a SC |
1982 | natptr->r_index[0] = r_index >> 16; |
1983 | natptr->r_index[1] = r_index >> 8; | |
1984 | natptr->r_index[2] = r_index; | |
1985 | natptr->r_type[0] = | |
6db82ea7 SC |
1986 | (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0) |
1987 | | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0) | |
1988 | | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0) | |
1989 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0) | |
1990 | | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0) | |
1991 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG); | |
7ed4093a | 1992 | } else { |
6db82ea7 SC |
1993 | natptr->r_index[2] = r_index >> 16; |
1994 | natptr->r_index[1] = r_index >> 8; | |
1995 | natptr->r_index[0] = r_index; | |
1996 | natptr->r_type[0] = | |
1997 | (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0) | |
7ed4093a | 1998 | | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0) |
6db82ea7 SC |
1999 | | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0) |
2000 | | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0) | |
2001 | | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0) | |
2002 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
2003 | } | |
3f7607af | 2004 | } |
7ed4093a SC |
2005 | |
2006 | ||
2007 | /* Extended stuff */ | |
2008 | /* Output extended relocation information to a file in target byte order. */ | |
2009 | ||
2010 | void | |
8eb5d4be JK |
2011 | NAME(aout,swap_ext_reloc_out) (abfd, g, natptr) |
2012 | bfd *abfd; | |
2013 | arelent *g; | |
2014 | register struct reloc_ext_external *natptr; | |
3f7607af | 2015 | { |
6db82ea7 SC |
2016 | int r_index; |
2017 | int r_extern; | |
2018 | unsigned int r_type; | |
2019 | unsigned int r_addend; | |
c188b0be | 2020 | asymbol *sym = *(g->sym_ptr_ptr); |
6db82ea7 | 2021 | asection *output_section = sym->section->output_section; |
c188b0be | 2022 | |
6db82ea7 | 2023 | PUT_WORD (abfd, g->address, natptr->r_address); |
c188b0be | 2024 | |
6db82ea7 | 2025 | r_type = (unsigned int) g->howto->type; |
7ed4093a | 2026 | |
c188b0be | 2027 | r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; |
7ed4093a | 2028 | |
c188b0be | 2029 | /* If this relocation is relative to a symbol then set the |
2768b3f7 SC |
2030 | r_index to the symbols index, and the r_extern bit. |
2031 | ||
2032 | Absolute symbols can come in in two ways, either as an offset | |
2033 | from the abs section, or as a symbol which has an abs value. | |
c188b0be DM |
2034 | check for that here. */ |
2035 | ||
382f2a3d | 2036 | if (bfd_is_com_section (output_section) |
4587b578 ILT |
2037 | || bfd_is_abs_section (output_section) |
2038 | || bfd_is_und_section (output_section)) | |
6db82ea7 | 2039 | { |
4587b578 | 2040 | if (bfd_abs_section_ptr->symbol == sym) |
2768b3f7 SC |
2041 | { |
2042 | /* Whoops, looked like an abs symbol, but is really an offset | |
2043 | from the abs section */ | |
2044 | r_index = 0; | |
2045 | r_extern = 0; | |
2046 | } | |
c188b0be | 2047 | else |
2768b3f7 SC |
2048 | { |
2049 | r_extern = 1; | |
2050 | r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT); | |
2051 | } | |
6db82ea7 | 2052 | } |
c188b0be | 2053 | else |
6db82ea7 SC |
2054 | { |
2055 | /* Just an ordinary section */ | |
2056 | r_extern = 0; | |
c188b0be | 2057 | r_index = output_section->target_index; |
6db82ea7 | 2058 | } |
c188b0be | 2059 | |
7ed4093a SC |
2060 | /* now the fun stuff */ |
2061 | if (abfd->xvec->header_byteorder_big_p != false) { | |
2768b3f7 SC |
2062 | natptr->r_index[0] = r_index >> 16; |
2063 | natptr->r_index[1] = r_index >> 8; | |
2064 | natptr->r_index[2] = r_index; | |
2065 | natptr->r_type[0] = | |
c188b0be DM |
2066 | ((r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0) |
2067 | | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
2768b3f7 SC |
2068 | } else { |
2069 | natptr->r_index[2] = r_index >> 16; | |
2070 | natptr->r_index[1] = r_index >> 8; | |
2071 | natptr->r_index[0] = r_index; | |
2072 | natptr->r_type[0] = | |
2073 | (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0) | |
2074 | | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
2075 | } | |
7ed4093a SC |
2076 | |
2077 | PUT_WORD (abfd, r_addend, natptr->r_addend); | |
2078 | } | |
2079 | ||
6db82ea7 SC |
2080 | /* BFD deals internally with all things based from the section they're |
2081 | in. so, something in 10 bytes into a text section with a base of | |
c188b0be | 2082 | 50 would have a symbol (.text+10) and know .text vma was 50. |
6db82ea7 SC |
2083 | |
2084 | Aout keeps all it's symbols based from zero, so the symbol would | |
2085 | contain 60. This macro subs the base of each section from the value | |
2086 | to give the true offset from the section */ | |
2087 | ||
2088 | ||
7ed4093a SC |
2089 | #define MOVE_ADDRESS(ad) \ |
2090 | if (r_extern) { \ | |
6db82ea7 SC |
2091 | /* undefined symbol */ \ |
2092 | cache_ptr->sym_ptr_ptr = symbols + r_index; \ | |
2093 | cache_ptr->addend = ad; \ | |
2094 | } else { \ | |
2095 | /* defined, section relative. replace symbol with pointer to \ | |
2096 | symbol which points to section */ \ | |
7ed4093a SC |
2097 | switch (r_index) { \ |
2098 | case N_TEXT: \ | |
2099 | case N_TEXT | N_EXT: \ | |
6db82ea7 | 2100 | cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
2101 | cache_ptr->addend = ad - su->textsec->vma; \ |
2102 | break; \ | |
2103 | case N_DATA: \ | |
2104 | case N_DATA | N_EXT: \ | |
6db82ea7 | 2105 | cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
2106 | cache_ptr->addend = ad - su->datasec->vma; \ |
2107 | break; \ | |
2108 | case N_BSS: \ | |
2109 | case N_BSS | N_EXT: \ | |
6db82ea7 | 2110 | cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \ |
7ed4093a SC |
2111 | cache_ptr->addend = ad - su->bsssec->vma; \ |
2112 | break; \ | |
6db82ea7 | 2113 | default: \ |
7ed4093a SC |
2114 | case N_ABS: \ |
2115 | case N_ABS | N_EXT: \ | |
4587b578 | 2116 | cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ |
6db82ea7 | 2117 | cache_ptr->addend = ad; \ |
7ed4093a SC |
2118 | break; \ |
2119 | } \ | |
2120 | } \ | |
2121 | ||
2122 | void | |
2f675427 | 2123 | NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount) |
8eb5d4be JK |
2124 | bfd *abfd; |
2125 | struct reloc_ext_external *bytes; | |
2126 | arelent *cache_ptr; | |
2127 | asymbol **symbols; | |
2f675427 | 2128 | bfd_size_type symcount; |
7ed4093a SC |
2129 | { |
2130 | int r_index; | |
2131 | int r_extern; | |
2132 | unsigned int r_type; | |
6db82ea7 | 2133 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
7ed4093a SC |
2134 | |
2135 | cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); | |
2136 | ||
2137 | /* now the fun stuff */ | |
2138 | if (abfd->xvec->header_byteorder_big_p != false) { | |
382f2a3d ILT |
2139 | r_index = (bytes->r_index[0] << 16) |
2140 | | (bytes->r_index[1] << 8) | |
2141 | | bytes->r_index[2]; | |
7ed4093a SC |
2142 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); |
2143 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
2144 | >> RELOC_EXT_BITS_TYPE_SH_BIG; | |
2145 | } else { | |
382f2a3d ILT |
2146 | r_index = (bytes->r_index[2] << 16) |
2147 | | (bytes->r_index[1] << 8) | |
2148 | | bytes->r_index[0]; | |
7ed4093a SC |
2149 | r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); |
2150 | r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
2151 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE; | |
2152 | } | |
2153 | ||
2f675427 ILT |
2154 | cache_ptr->howto = howto_table_ext + r_type; |
2155 | ||
2156 | /* Base relative relocs are always against the symbol table, | |
2157 | regardless of the setting of r_extern. r_extern just reflects | |
2158 | whether the symbol the reloc is against is local or global. */ | |
2159 | if (r_type == RELOC_BASE10 | |
2160 | || r_type == RELOC_BASE13 | |
2161 | || r_type == RELOC_BASE22) | |
2162 | r_extern = 1; | |
2163 | ||
2164 | if (r_extern && r_index > symcount) | |
773033d2 ILT |
2165 | { |
2166 | /* We could arrange to return an error, but it might be useful | |
2167 | to see the file even if it is bad. */ | |
2168 | r_extern = 0; | |
2169 | r_index = N_ABS; | |
2170 | } | |
2171 | ||
6db82ea7 | 2172 | MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend)); |
7ed4093a SC |
2173 | } |
2174 | ||
2175 | void | |
2f675427 | 2176 | NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount) |
8eb5d4be JK |
2177 | bfd *abfd; |
2178 | struct reloc_std_external *bytes; | |
2179 | arelent *cache_ptr; | |
2180 | asymbol **symbols; | |
2f675427 | 2181 | bfd_size_type symcount; |
7ed4093a SC |
2182 | { |
2183 | int r_index; | |
2184 | int r_extern; | |
2185 | unsigned int r_length; | |
2186 | int r_pcrel; | |
2187 | int r_baserel, r_jmptable, r_relative; | |
6db82ea7 | 2188 | struct aoutdata *su = &(abfd->tdata.aout_data->a); |
c188b0be | 2189 | int howto_idx; |
7ed4093a | 2190 | |
34dd8ba3 | 2191 | cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address); |
7ed4093a SC |
2192 | |
2193 | /* now the fun stuff */ | |
2194 | if (abfd->xvec->header_byteorder_big_p != false) { | |
382f2a3d ILT |
2195 | r_index = (bytes->r_index[0] << 16) |
2196 | | (bytes->r_index[1] << 8) | |
2197 | | bytes->r_index[2]; | |
7ed4093a SC |
2198 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); |
2199 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
2200 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
2201 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
2202 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
c188b0be | 2203 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) |
7ed4093a SC |
2204 | >> RELOC_STD_BITS_LENGTH_SH_BIG; |
2205 | } else { | |
382f2a3d ILT |
2206 | r_index = (bytes->r_index[2] << 16) |
2207 | | (bytes->r_index[1] << 8) | |
2208 | | bytes->r_index[0]; | |
7ed4093a SC |
2209 | r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); |
2210 | r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
2211 | r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
2212 | r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
2213 | r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
c188b0be | 2214 | r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) |
7ed4093a SC |
2215 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE; |
2216 | } | |
2217 | ||
cb9461ff JK |
2218 | howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel |
2219 | + 16 * r_jmptable + 32 * r_relative; | |
c188b0be DM |
2220 | BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std)); |
2221 | cache_ptr->howto = howto_table_std + howto_idx; | |
2222 | BFD_ASSERT (cache_ptr->howto->type != -1); | |
7ed4093a | 2223 | |
2f675427 ILT |
2224 | /* Base relative relocs are always against the symbol table, |
2225 | regardless of the setting of r_extern. r_extern just reflects | |
2226 | whether the symbol the reloc is against is local or global. */ | |
2227 | if (r_baserel) | |
2228 | r_extern = 1; | |
2229 | ||
2230 | if (r_extern && r_index > symcount) | |
773033d2 ILT |
2231 | { |
2232 | /* We could arrange to return an error, but it might be useful | |
2233 | to see the file even if it is bad. */ | |
2234 | r_extern = 0; | |
2235 | r_index = N_ABS; | |
2236 | } | |
2237 | ||
7ed4093a SC |
2238 | MOVE_ADDRESS(0); |
2239 | } | |
2240 | ||
5c8444f8 | 2241 | /* Read and swap the relocs for a section. */ |
7ed4093a SC |
2242 | |
2243 | boolean | |
8eb5d4be JK |
2244 | NAME(aout,slurp_reloc_table) (abfd, asect, symbols) |
2245 | bfd *abfd; | |
2246 | sec_ptr asect; | |
2247 | asymbol **symbols; | |
7ed4093a SC |
2248 | { |
2249 | unsigned int count; | |
2250 | bfd_size_type reloc_size; | |
2251 | PTR relocs; | |
2252 | arelent *reloc_cache; | |
2253 | size_t each_size; | |
0ee75d02 ILT |
2254 | unsigned int counter = 0; |
2255 | arelent *cache_ptr; | |
7ed4093a | 2256 | |
5c8444f8 ILT |
2257 | if (asect->relocation) |
2258 | return true; | |
7ed4093a | 2259 | |
5c8444f8 ILT |
2260 | if (asect->flags & SEC_CONSTRUCTOR) |
2261 | return true; | |
7ed4093a | 2262 | |
0ee75d02 | 2263 | if (asect == obj_datasec (abfd)) |
7ed4093a | 2264 | reloc_size = exec_hdr(abfd)->a_drsize; |
0ee75d02 | 2265 | else if (asect == obj_textsec (abfd)) |
7ed4093a | 2266 | reloc_size = exec_hdr(abfd)->a_trsize; |
f42fe159 ILT |
2267 | else if (asect == obj_bsssec (abfd)) |
2268 | reloc_size = 0; | |
0ee75d02 ILT |
2269 | else |
2270 | { | |
68241b2b | 2271 | bfd_set_error (bfd_error_invalid_operation); |
0ee75d02 ILT |
2272 | return false; |
2273 | } | |
2274 | ||
5c8444f8 ILT |
2275 | if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) |
2276 | return false; | |
2277 | ||
7ed4093a SC |
2278 | each_size = obj_reloc_entry_size (abfd); |
2279 | ||
2280 | count = reloc_size / each_size; | |
2281 | ||
fa77c704 | 2282 | reloc_cache = (arelent *) malloc ((size_t) (count * sizeof (arelent))); |
5c8444f8 | 2283 | if (reloc_cache == NULL && count != 0) |
0ee75d02 | 2284 | { |
68241b2b | 2285 | bfd_set_error (bfd_error_no_memory); |
0ee75d02 ILT |
2286 | return false; |
2287 | } | |
fa77c704 | 2288 | memset (reloc_cache, 0, count * sizeof (arelent)); |
7ed4093a | 2289 | |
3fe22b98 | 2290 | relocs = malloc ((size_t) reloc_size); |
5c8444f8 | 2291 | if (relocs == NULL && reloc_size != 0) |
0ee75d02 | 2292 | { |
5c8444f8 ILT |
2293 | free (reloc_cache); |
2294 | bfd_set_error (bfd_error_no_memory); | |
2295 | return false; | |
0ee75d02 | 2296 | } |
7ed4093a | 2297 | |
0ee75d02 ILT |
2298 | if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) |
2299 | { | |
5c8444f8 ILT |
2300 | free (relocs); |
2301 | free (reloc_cache); | |
0ee75d02 ILT |
2302 | return false; |
2303 | } | |
7ed4093a | 2304 | |
0ee75d02 ILT |
2305 | cache_ptr = reloc_cache; |
2306 | if (each_size == RELOC_EXT_SIZE) | |
2307 | { | |
2308 | register struct reloc_ext_external *rptr = | |
2309 | (struct reloc_ext_external *) relocs; | |
7ed4093a | 2310 | |
0ee75d02 | 2311 | for (; counter < count; counter++, rptr++, cache_ptr++) |
2f675427 ILT |
2312 | NAME(aout,swap_ext_reloc_in) (abfd, rptr, cache_ptr, symbols, |
2313 | bfd_get_symcount (abfd)); | |
7ed4093a | 2314 | } |
0ee75d02 ILT |
2315 | else |
2316 | { | |
5c8444f8 ILT |
2317 | register struct reloc_std_external *rptr = |
2318 | (struct reloc_std_external *) relocs; | |
7ed4093a | 2319 | |
0ee75d02 | 2320 | for (; counter < count; counter++, rptr++, cache_ptr++) |
2f675427 ILT |
2321 | MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols, |
2322 | bfd_get_symcount (abfd)); | |
7ed4093a SC |
2323 | } |
2324 | ||
5c8444f8 ILT |
2325 | free (relocs); |
2326 | ||
7ed4093a | 2327 | asect->relocation = reloc_cache; |
0ee75d02 | 2328 | asect->reloc_count = cache_ptr - reloc_cache; |
5c8444f8 | 2329 | |
7ed4093a SC |
2330 | return true; |
2331 | } | |
2332 | ||
7ed4093a SC |
2333 | /* Write out a relocation section into an object file. */ |
2334 | ||
2335 | boolean | |
8eb5d4be JK |
2336 | NAME(aout,squirt_out_relocs) (abfd, section) |
2337 | bfd *abfd; | |
2338 | asection *section; | |
7ed4093a SC |
2339 | { |
2340 | arelent **generic; | |
2341 | unsigned char *native, *natptr; | |
2342 | size_t each_size; | |
2343 | ||
2344 | unsigned int count = section->reloc_count; | |
2345 | size_t natsize; | |
2346 | ||
2347 | if (count == 0) return true; | |
2348 | ||
2349 | each_size = obj_reloc_entry_size (abfd); | |
2350 | natsize = each_size * count; | |
2351 | native = (unsigned char *) bfd_zalloc (abfd, natsize); | |
2352 | if (!native) { | |
68241b2b | 2353 | bfd_set_error (bfd_error_no_memory); |
7ed4093a SC |
2354 | return false; |
2355 | } | |
2356 | ||
2357 | generic = section->orelocation; | |
2358 | ||
c188b0be | 2359 | if (each_size == RELOC_EXT_SIZE) |
7ed4093a SC |
2360 | { |
2361 | for (natptr = native; | |
2362 | count != 0; | |
2363 | --count, natptr += each_size, ++generic) | |
2364 | NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr); | |
2365 | } | |
c188b0be | 2366 | else |
7ed4093a SC |
2367 | { |
2368 | for (natptr = native; | |
2369 | count != 0; | |
2370 | --count, natptr += each_size, ++generic) | |
f42fe159 | 2371 | MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr); |
7ed4093a SC |
2372 | } |
2373 | ||
2374 | if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) { | |
2375 | bfd_release(abfd, native); | |
2376 | return false; | |
2377 | } | |
2378 | bfd_release (abfd, native); | |
2379 | ||
2380 | return true; | |
2381 | } | |
2382 | ||
2383 | /* This is stupid. This function should be a boolean predicate */ | |
326e32d7 | 2384 | long |
8eb5d4be JK |
2385 | NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols) |
2386 | bfd *abfd; | |
2387 | sec_ptr section; | |
2388 | arelent **relptr; | |
2389 | asymbol **symbols; | |
7ed4093a SC |
2390 | { |
2391 | arelent *tblptr = section->relocation; | |
2392 | unsigned int count; | |
2393 | ||
4f019d04 ILT |
2394 | if (section == obj_bsssec (abfd)) |
2395 | { | |
2396 | *relptr = NULL; | |
2397 | return 0; | |
2398 | } | |
2399 | ||
7ed4093a | 2400 | if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols))) |
326e32d7 | 2401 | return -1; |
7ed4093a SC |
2402 | |
2403 | if (section->flags & SEC_CONSTRUCTOR) { | |
2404 | arelent_chain *chain = section->constructor_chain; | |
2405 | for (count = 0; count < section->reloc_count; count ++) { | |
2406 | *relptr ++ = &chain->relent; | |
2407 | chain = chain->next; | |
2408 | } | |
2409 | } | |
2410 | else { | |
2411 | tblptr = section->relocation; | |
7ed4093a | 2412 | |
c188b0be | 2413 | for (count = 0; count++ < section->reloc_count;) |
7ed4093a SC |
2414 | { |
2415 | *relptr++ = tblptr++; | |
2416 | } | |
2417 | } | |
2418 | *relptr = 0; | |
2419 | ||
2420 | return section->reloc_count; | |
2421 | } | |
2422 | ||
326e32d7 | 2423 | long |
8eb5d4be JK |
2424 | NAME(aout,get_reloc_upper_bound) (abfd, asect) |
2425 | bfd *abfd; | |
2426 | sec_ptr asect; | |
7ed4093a SC |
2427 | { |
2428 | if (bfd_get_format (abfd) != bfd_object) { | |
68241b2b | 2429 | bfd_set_error (bfd_error_invalid_operation); |
326e32d7 | 2430 | return -1; |
7ed4093a SC |
2431 | } |
2432 | if (asect->flags & SEC_CONSTRUCTOR) { | |
2433 | return (sizeof (arelent *) * (asect->reloc_count+1)); | |
2434 | } | |
2435 | ||
7ed4093a | 2436 | if (asect == obj_datasec (abfd)) |
fa77c704 ILT |
2437 | return (sizeof (arelent *) |
2438 | * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd)) | |
2439 | + 1)); | |
7ed4093a SC |
2440 | |
2441 | if (asect == obj_textsec (abfd)) | |
fa77c704 ILT |
2442 | return (sizeof (arelent *) |
2443 | * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd)) | |
2444 | + 1)); | |
7ed4093a | 2445 | |
4f019d04 ILT |
2446 | if (asect == obj_bsssec (abfd)) |
2447 | return sizeof (arelent *); | |
2448 | ||
f42fe159 ILT |
2449 | if (asect == obj_bsssec (abfd)) |
2450 | return 0; | |
2451 | ||
68241b2b | 2452 | bfd_set_error (bfd_error_invalid_operation); |
326e32d7 | 2453 | return -1; |
7ed4093a SC |
2454 | } |
2455 | ||
2456 | \f | |
326e32d7 | 2457 | long |
8eb5d4be JK |
2458 | NAME(aout,get_symtab_upper_bound) (abfd) |
2459 | bfd *abfd; | |
7ed4093a | 2460 | { |
326e32d7 ILT |
2461 | if (!NAME(aout,slurp_symbol_table)(abfd)) |
2462 | return -1; | |
7ed4093a SC |
2463 | |
2464 | return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); | |
2465 | } | |
728472f1 ILT |
2466 | |
2467 | /*ARGSUSED*/ | |
7ed4093a | 2468 | alent * |
8eb5d4be JK |
2469 | NAME(aout,get_lineno) (ignore_abfd, ignore_symbol) |
2470 | bfd *ignore_abfd; | |
2471 | asymbol *ignore_symbol; | |
7ed4093a SC |
2472 | { |
2473 | return (alent *)NULL; | |
2474 | } | |
2475 | ||
728472f1 | 2476 | /*ARGSUSED*/ |
c188b0be | 2477 | void |
8eb5d4be JK |
2478 | NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret) |
2479 | bfd *ignore_abfd; | |
2480 | asymbol *symbol; | |
2481 | symbol_info *ret; | |
34dd8ba3 JG |
2482 | { |
2483 | bfd_symbol_info (symbol, ret); | |
2484 | ||
2485 | if (ret->type == '?') | |
2486 | { | |
2487 | int type_code = aout_symbol(symbol)->type & 0xff; | |
2488 | CONST char *stab_name = aout_stab_name(type_code); | |
2489 | static char buf[10]; | |
2490 | ||
2491 | if (stab_name == NULL) | |
2492 | { | |
2493 | sprintf(buf, "(%d)", type_code); | |
2494 | stab_name = buf; | |
2495 | } | |
2496 | ret->type = '-'; | |
2497 | ret->stab_other = (unsigned)(aout_symbol(symbol)->other & 0xff); | |
2498 | ret->stab_desc = (unsigned)(aout_symbol(symbol)->desc & 0xffff); | |
2499 | ret->stab_name = stab_name; | |
2500 | } | |
2501 | } | |
7ed4093a | 2502 | |
728472f1 | 2503 | /*ARGSUSED*/ |
c188b0be | 2504 | void |
8eb5d4be JK |
2505 | NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how) |
2506 | bfd *ignore_abfd; | |
2507 | PTR afile; | |
2508 | asymbol *symbol; | |
2509 | bfd_print_symbol_type how; | |
7ed4093a SC |
2510 | { |
2511 | FILE *file = (FILE *)afile; | |
2512 | ||
2513 | switch (how) { | |
9e2dad8e | 2514 | case bfd_print_symbol_name: |
fb3be09b JG |
2515 | if (symbol->name) |
2516 | fprintf(file,"%s", symbol->name); | |
7ed4093a | 2517 | break; |
9e2dad8e | 2518 | case bfd_print_symbol_more: |
7ed4093a SC |
2519 | fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff), |
2520 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
2521 | (unsigned)(aout_symbol(symbol)->type)); | |
2522 | break; | |
9e2dad8e | 2523 | case bfd_print_symbol_all: |
7ed4093a | 2524 | { |
6db82ea7 SC |
2525 | CONST char *section_name = symbol->section->name; |
2526 | ||
7ed4093a SC |
2527 | |
2528 | bfd_print_symbol_vandf((PTR)file,symbol); | |
2529 | ||
fb3be09b | 2530 | fprintf(file," %-5s %04x %02x %02x", |
7ed4093a SC |
2531 | section_name, |
2532 | (unsigned)(aout_symbol(symbol)->desc & 0xffff), | |
2533 | (unsigned)(aout_symbol(symbol)->other & 0xff), | |
9e2dad8e | 2534 | (unsigned)(aout_symbol(symbol)->type & 0xff)); |
fb3be09b JG |
2535 | if (symbol->name) |
2536 | fprintf(file," %s", symbol->name); | |
7ed4093a SC |
2537 | } |
2538 | break; | |
2539 | } | |
2540 | } | |
2541 | ||
c3246d9b ILT |
2542 | /* If we don't have to allocate more than 1MB to hold the generic |
2543 | symbols, we use the generic minisymbol methord: it's faster, since | |
2544 | it only translates the symbols once, not multiple times. */ | |
2545 | #define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) | |
2546 | ||
2547 | /* Read minisymbols. For minisymbols, we use the unmodified a.out | |
2548 | symbols. The minisymbol_to_symbol function translates these into | |
2549 | BFD asymbol structures. */ | |
2550 | ||
2551 | long | |
2552 | NAME(aout,read_minisymbols) (abfd, dynamic, minisymsp, sizep) | |
2553 | bfd *abfd; | |
2554 | boolean dynamic; | |
2555 | PTR *minisymsp; | |
2556 | unsigned int *sizep; | |
2557 | { | |
2558 | if (dynamic) | |
2559 | { | |
2560 | /* We could handle the dynamic symbols here as well, but it's | |
2561 | easier to hand them off. */ | |
2562 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2563 | } | |
2564 | ||
2565 | if (! aout_get_external_symbols (abfd)) | |
2566 | return -1; | |
2567 | ||
2568 | if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2569 | return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); | |
2570 | ||
2571 | *minisymsp = (PTR) obj_aout_external_syms (abfd); | |
2572 | ||
2573 | /* By passing the external symbols back from this routine, we are | |
2574 | giving up control over the memory block. Clear | |
2575 | obj_aout_external_syms, so that we do not try to free it | |
2576 | ourselves. */ | |
2577 | obj_aout_external_syms (abfd) = NULL; | |
2578 | ||
2579 | *sizep = EXTERNAL_NLIST_SIZE; | |
2580 | return obj_aout_external_sym_count (abfd); | |
2581 | } | |
2582 | ||
2583 | /* Convert a minisymbol to a BFD asymbol. A minisymbol is just an | |
2584 | unmodified a.out symbol. The SYM argument is a structure returned | |
2585 | by bfd_make_empty_symbol, which we fill in here. */ | |
2586 | ||
2587 | asymbol * | |
2588 | NAME(aout,minisymbol_to_symbol) (abfd, dynamic, minisym, sym) | |
2589 | bfd *abfd; | |
2590 | boolean dynamic; | |
2591 | const PTR minisym; | |
2592 | asymbol *sym; | |
2593 | { | |
2594 | if (dynamic | |
2595 | || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) | |
2596 | return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); | |
2597 | ||
2598 | memset (sym, 0, sizeof (aout_symbol_type)); | |
2599 | ||
2600 | /* We call translate_symbol_table to translate a single symbol. */ | |
2601 | if (! (NAME(aout,translate_symbol_table) | |
2602 | (abfd, | |
2603 | (aout_symbol_type *) sym, | |
2604 | (struct external_nlist *) minisym, | |
2605 | (bfd_size_type) 1, | |
2606 | obj_aout_external_strings (abfd), | |
2607 | obj_aout_external_string_size (abfd), | |
2608 | false))) | |
2609 | return NULL; | |
2610 | ||
2611 | return sym; | |
2612 | } | |
2613 | ||
c188b0be | 2614 | /* |
6724ff46 | 2615 | provided a BFD, a section and an offset into the section, calculate |
7ed4093a SC |
2616 | and return the name of the source file and the line nearest to the |
2617 | wanted location. | |
2618 | */ | |
c188b0be | 2619 | |
7ed4093a | 2620 | boolean |
8eb5d4be JK |
2621 | NAME(aout,find_nearest_line) |
2622 | (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr) | |
2623 | bfd *abfd; | |
2624 | asection *section; | |
2625 | asymbol **symbols; | |
2626 | bfd_vma offset; | |
2627 | CONST char **filename_ptr; | |
2628 | CONST char **functionname_ptr; | |
2629 | unsigned int *line_ptr; | |
7ed4093a SC |
2630 | { |
2631 | /* Run down the file looking for the filename, function and linenumber */ | |
2632 | asymbol **p; | |
2633 | static char buffer[100]; | |
98d43107 | 2634 | static char filename_buffer[200]; |
6db82ea7 SC |
2635 | CONST char *directory_name = NULL; |
2636 | CONST char *main_file_name = NULL; | |
2637 | CONST char *current_file_name = NULL; | |
2638 | CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */ | |
7ed4093a SC |
2639 | bfd_vma high_line_vma = ~0; |
2640 | bfd_vma low_func_vma = 0; | |
2641 | asymbol *func = 0; | |
2642 | *filename_ptr = abfd->filename; | |
2643 | *functionname_ptr = 0; | |
2644 | *line_ptr = 0; | |
2645 | if (symbols != (asymbol **)NULL) { | |
2646 | for (p = symbols; *p; p++) { | |
2647 | aout_symbol_type *q = (aout_symbol_type *)(*p); | |
98d43107 | 2648 | next: |
7ed4093a SC |
2649 | switch (q->type){ |
2650 | case N_SO: | |
3f7607af | 2651 | main_file_name = current_file_name = q->symbol.name; |
98d43107 JG |
2652 | /* Look ahead to next symbol to check if that too is an N_SO. */ |
2653 | p++; | |
2654 | if (*p == NULL) | |
2655 | break; | |
2656 | q = (aout_symbol_type *)(*p); | |
6db82ea7 | 2657 | if (q->type != (int)N_SO) |
98d43107 JG |
2658 | goto next; |
2659 | ||
2660 | /* Found a second N_SO First is directory; second is filename. */ | |
3f7607af PB |
2661 | directory_name = current_file_name; |
2662 | main_file_name = current_file_name = q->symbol.name; | |
2663 | if (obj_textsec(abfd) != section) | |
2664 | goto done; | |
2665 | break; | |
2666 | case N_SOL: | |
2667 | current_file_name = q->symbol.name; | |
7ed4093a | 2668 | break; |
3f7607af | 2669 | |
7ed4093a SC |
2670 | case N_SLINE: |
2671 | ||
2672 | case N_DSLINE: | |
2673 | case N_BSLINE: | |
2674 | /* We'll keep this if it resolves nearer than the one we have already */ | |
2675 | if (q->symbol.value >= offset && | |
2676 | q->symbol.value < high_line_vma) { | |
2677 | *line_ptr = q->desc; | |
2678 | high_line_vma = q->symbol.value; | |
3f7607af | 2679 | line_file_name = current_file_name; |
7ed4093a SC |
2680 | } |
2681 | break; | |
2682 | case N_FUN: | |
2683 | { | |
2684 | /* We'll keep this if it is nearer than the one we have already */ | |
2685 | if (q->symbol.value >= low_func_vma && | |
2686 | q->symbol.value <= offset) { | |
2687 | low_func_vma = q->symbol.value; | |
2688 | func = (asymbol *)q; | |
2689 | } | |
2690 | if (*line_ptr && func) { | |
2691 | CONST char *function = func->name; | |
2692 | char *p; | |
ec099b4b | 2693 | |
91f300d6 | 2694 | /* The caller expects a symbol name. We actually have a |
ec099b4b ILT |
2695 | function name, without the leading underscore. Put the |
2696 | underscore back in, so that the caller gets a symbol | |
2697 | name. */ | |
2698 | if (bfd_get_symbol_leading_char (abfd) == '\0') | |
2699 | strncpy (buffer, function, sizeof (buffer) - 1); | |
2700 | else | |
2701 | { | |
2702 | buffer[0] = bfd_get_symbol_leading_char (abfd); | |
2703 | strncpy (buffer + 1, function, sizeof (buffer) - 2); | |
2704 | } | |
7ed4093a SC |
2705 | buffer[sizeof(buffer)-1] = 0; |
2706 | /* Have to remove : stuff */ | |
2707 | p = strchr(buffer,':'); | |
7b02b4ed | 2708 | if (p != NULL) { *p = '\0'; } |
7ed4093a | 2709 | *functionname_ptr = buffer; |
3f7607af | 2710 | goto done; |
7ed4093a SC |
2711 | |
2712 | } | |
2713 | } | |
2714 | break; | |
2715 | } | |
2716 | } | |
2717 | } | |
3f7607af PB |
2718 | |
2719 | done: | |
2720 | if (*line_ptr) | |
2721 | main_file_name = line_file_name; | |
2722 | if (main_file_name) { | |
2723 | if (main_file_name[0] == '/' || directory_name == NULL) | |
2724 | *filename_ptr = main_file_name; | |
2725 | else { | |
2726 | sprintf(filename_buffer, "%.140s%.50s", | |
2727 | directory_name, main_file_name); | |
2728 | *filename_ptr = filename_buffer; | |
2729 | } | |
2730 | } | |
7ed4093a SC |
2731 | return true; |
2732 | ||
2733 | } | |
2734 | ||
728472f1 | 2735 | /*ARGSUSED*/ |
c188b0be | 2736 | int |
8eb5d4be JK |
2737 | NAME(aout,sizeof_headers) (abfd, execable) |
2738 | bfd *abfd; | |
2739 | boolean execable; | |
7ed4093a | 2740 | { |
6db82ea7 | 2741 | return adata(abfd).exec_bytes_size; |
7ed4093a | 2742 | } |
5c8444f8 ILT |
2743 | |
2744 | /* Free all information we have cached for this BFD. We can always | |
2745 | read it again later if we need it. */ | |
2746 | ||
2747 | boolean | |
2748 | NAME(aout,bfd_free_cached_info) (abfd) | |
2749 | bfd *abfd; | |
2750 | { | |
2751 | asection *o; | |
2752 | ||
c4dd531f ILT |
2753 | if (bfd_get_format (abfd) != bfd_object) |
2754 | return true; | |
2755 | ||
4852416e DHW |
2756 | #define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } |
2757 | BFCI_FREE (obj_aout_symbols (abfd)); | |
2758 | BFCI_FREE (obj_aout_external_syms (abfd)); | |
2759 | BFCI_FREE (obj_aout_external_strings (abfd)); | |
5c8444f8 | 2760 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
4852416e DHW |
2761 | BFCI_FREE (o->relocation); |
2762 | #undef BFCI_FREE | |
5c8444f8 ILT |
2763 | |
2764 | return true; | |
2765 | } | |
4c3721d5 ILT |
2766 | \f |
2767 | /* a.out link code. */ | |
2768 | ||
4c3721d5 ILT |
2769 | static boolean aout_link_add_object_symbols |
2770 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2771 | static boolean aout_link_check_archive_element | |
2772 | PARAMS ((bfd *, struct bfd_link_info *, boolean *)); | |
4c3721d5 ILT |
2773 | static boolean aout_link_free_symbols PARAMS ((bfd *)); |
2774 | static boolean aout_link_check_ar_symbols | |
2775 | PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded)); | |
2776 | static boolean aout_link_add_symbols | |
2777 | PARAMS ((bfd *, struct bfd_link_info *)); | |
2778 | ||
2779 | /* Routine to create an entry in an a.out link hash table. */ | |
2780 | ||
e85e8bfe ILT |
2781 | struct bfd_hash_entry * |
2782 | NAME(aout,link_hash_newfunc) (entry, table, string) | |
4c3721d5 ILT |
2783 | struct bfd_hash_entry *entry; |
2784 | struct bfd_hash_table *table; | |
2785 | const char *string; | |
2786 | { | |
2787 | struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; | |
2788 | ||
2789 | /* Allocate the structure if it has not already been allocated by a | |
2790 | subclass. */ | |
2791 | if (ret == (struct aout_link_hash_entry *) NULL) | |
2792 | ret = ((struct aout_link_hash_entry *) | |
2793 | bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry))); | |
9783e04a DM |
2794 | if (ret == (struct aout_link_hash_entry *) NULL) |
2795 | { | |
68241b2b | 2796 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
2797 | return (struct bfd_hash_entry *) ret; |
2798 | } | |
4c3721d5 ILT |
2799 | |
2800 | /* Call the allocation method of the superclass. */ | |
2801 | ret = ((struct aout_link_hash_entry *) | |
2802 | _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2803 | table, string)); | |
9783e04a | 2804 | if (ret) |
35fee729 ILT |
2805 | { |
2806 | /* Set local fields. */ | |
2807 | ret->written = false; | |
2808 | ret->indx = -1; | |
2809 | } | |
4c3721d5 ILT |
2810 | |
2811 | return (struct bfd_hash_entry *) ret; | |
2812 | } | |
2813 | ||
e85e8bfe ILT |
2814 | /* Initialize an a.out link hash table. */ |
2815 | ||
2816 | boolean | |
2817 | NAME(aout,link_hash_table_init) (table, abfd, newfunc) | |
2818 | struct aout_link_hash_table *table; | |
2819 | bfd *abfd; | |
2820 | struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, | |
2821 | struct bfd_hash_table *, | |
2822 | const char *)); | |
2823 | { | |
2824 | return _bfd_link_hash_table_init (&table->root, abfd, newfunc); | |
2825 | } | |
2826 | ||
4c3721d5 ILT |
2827 | /* Create an a.out link hash table. */ |
2828 | ||
2829 | struct bfd_link_hash_table * | |
2830 | NAME(aout,link_hash_table_create) (abfd) | |
2831 | bfd *abfd; | |
2832 | { | |
2833 | struct aout_link_hash_table *ret; | |
2834 | ||
2835 | ret = ((struct aout_link_hash_table *) | |
c3246d9b ILT |
2836 | bfd_alloc (abfd, sizeof (struct aout_link_hash_table))); |
2837 | if (ret == NULL) | |
2838 | { | |
2839 | bfd_set_error (bfd_error_no_memory); | |
2840 | return (struct bfd_link_hash_table *) NULL; | |
2841 | } | |
e85e8bfe ILT |
2842 | if (! NAME(aout,link_hash_table_init) (ret, abfd, |
2843 | NAME(aout,link_hash_newfunc))) | |
4c3721d5 ILT |
2844 | { |
2845 | free (ret); | |
2846 | return (struct bfd_link_hash_table *) NULL; | |
2847 | } | |
2848 | return &ret->root; | |
2849 | } | |
2850 | ||
4c3721d5 ILT |
2851 | /* Given an a.out BFD, add symbols to the global hash table as |
2852 | appropriate. */ | |
2853 | ||
2854 | boolean | |
2855 | NAME(aout,link_add_symbols) (abfd, info) | |
2856 | bfd *abfd; | |
2857 | struct bfd_link_info *info; | |
2858 | { | |
2859 | switch (bfd_get_format (abfd)) | |
2860 | { | |
2861 | case bfd_object: | |
2862 | return aout_link_add_object_symbols (abfd, info); | |
2863 | case bfd_archive: | |
2864 | return _bfd_generic_link_add_archive_symbols | |
2865 | (abfd, info, aout_link_check_archive_element); | |
2866 | default: | |
68241b2b | 2867 | bfd_set_error (bfd_error_wrong_format); |
4c3721d5 ILT |
2868 | return false; |
2869 | } | |
2870 | } | |
2871 | ||
2872 | /* Add symbols from an a.out object file. */ | |
2873 | ||
2874 | static boolean | |
2875 | aout_link_add_object_symbols (abfd, info) | |
2876 | bfd *abfd; | |
2877 | struct bfd_link_info *info; | |
2878 | { | |
5c8444f8 | 2879 | if (! aout_get_external_symbols (abfd)) |
4c3721d5 ILT |
2880 | return false; |
2881 | if (! aout_link_add_symbols (abfd, info)) | |
2882 | return false; | |
2883 | if (! info->keep_memory) | |
2884 | { | |
2885 | if (! aout_link_free_symbols (abfd)) | |
2886 | return false; | |
2887 | } | |
2888 | return true; | |
2889 | } | |
2890 | ||
2891 | /* Check a single archive element to see if we need to include it in | |
2892 | the link. *PNEEDED is set according to whether this element is | |
2893 | needed in the link or not. This is called from | |
2894 | _bfd_generic_link_add_archive_symbols. */ | |
2895 | ||
2896 | static boolean | |
2897 | aout_link_check_archive_element (abfd, info, pneeded) | |
2898 | bfd *abfd; | |
2899 | struct bfd_link_info *info; | |
2900 | boolean *pneeded; | |
2901 | { | |
5c8444f8 | 2902 | if (! aout_get_external_symbols (abfd)) |
4c3721d5 ILT |
2903 | return false; |
2904 | ||
2905 | if (! aout_link_check_ar_symbols (abfd, info, pneeded)) | |
2906 | return false; | |
2907 | ||
2908 | if (*pneeded) | |
2909 | { | |
2910 | if (! aout_link_add_symbols (abfd, info)) | |
2911 | return false; | |
2912 | } | |
2913 | ||
1afd2380 | 2914 | if (! info->keep_memory || ! *pneeded) |
4c3721d5 ILT |
2915 | { |
2916 | if (! aout_link_free_symbols (abfd)) | |
2917 | return false; | |
2918 | } | |
2919 | ||
2920 | return true; | |
2921 | } | |
2922 | ||
4c3721d5 ILT |
2923 | /* Free up the internal symbols read from an a.out file. */ |
2924 | ||
2925 | static boolean | |
2926 | aout_link_free_symbols (abfd) | |
2927 | bfd *abfd; | |
2928 | { | |
2929 | if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) | |
2930 | { | |
2931 | free ((PTR) obj_aout_external_syms (abfd)); | |
2932 | obj_aout_external_syms (abfd) = (struct external_nlist *) NULL; | |
2933 | } | |
2934 | if (obj_aout_external_strings (abfd) != (char *) NULL) | |
2935 | { | |
2936 | free ((PTR) obj_aout_external_strings (abfd)); | |
2937 | obj_aout_external_strings (abfd) = (char *) NULL; | |
2938 | } | |
2939 | return true; | |
2940 | } | |
2941 | ||
2942 | /* Look through the internal symbols to see if this object file should | |
2943 | be included in the link. We should include this object file if it | |
2944 | defines any symbols which are currently undefined. If this object | |
2945 | file defines a common symbol, then we may adjust the size of the | |
2946 | known symbol but we do not include the object file in the link | |
2947 | (unless there is some other reason to include it). */ | |
2948 | ||
2949 | static boolean | |
2950 | aout_link_check_ar_symbols (abfd, info, pneeded) | |
2951 | bfd *abfd; | |
2952 | struct bfd_link_info *info; | |
2953 | boolean *pneeded; | |
2954 | { | |
2955 | register struct external_nlist *p; | |
2956 | struct external_nlist *pend; | |
2957 | char *strings; | |
2958 | ||
2959 | *pneeded = false; | |
2960 | ||
2961 | /* Look through all the symbols. */ | |
2962 | p = obj_aout_external_syms (abfd); | |
2963 | pend = p + obj_aout_external_sym_count (abfd); | |
2964 | strings = obj_aout_external_strings (abfd); | |
2965 | for (; p < pend; p++) | |
2966 | { | |
2967 | int type = bfd_h_get_8 (abfd, p->e_type); | |
2968 | const char *name; | |
2969 | struct bfd_link_hash_entry *h; | |
2970 | ||
4298e311 ILT |
2971 | /* Ignore symbols that are not externally visible. This is an |
2972 | optimization only, as we check the type more thoroughly | |
2973 | below. */ | |
4587b578 ILT |
2974 | if (((type & N_EXT) == 0 |
2975 | || (type & N_STAB) != 0 | |
2976 | || type == N_FN) | |
4298e311 ILT |
2977 | && type != N_WEAKA |
2978 | && type != N_WEAKT | |
2979 | && type != N_WEAKD | |
2980 | && type != N_WEAKB) | |
9b39ed6b ILT |
2981 | { |
2982 | if (type == N_WARNING | |
2983 | || type == N_INDR) | |
2984 | ++p; | |
2985 | continue; | |
2986 | } | |
4c3721d5 ILT |
2987 | |
2988 | name = strings + GET_WORD (abfd, p->e_strx); | |
2989 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); | |
2990 | ||
2991 | /* We are only interested in symbols that are currently | |
2992 | undefined or common. */ | |
2993 | if (h == (struct bfd_link_hash_entry *) NULL | |
2994 | || (h->type != bfd_link_hash_undefined | |
2995 | && h->type != bfd_link_hash_common)) | |
9b39ed6b ILT |
2996 | { |
2997 | if (type == (N_INDR | N_EXT)) | |
2998 | ++p; | |
2999 | continue; | |
3000 | } | |
4c3721d5 | 3001 | |
9b39ed6b ILT |
3002 | if (type == (N_TEXT | N_EXT) |
3003 | || type == (N_DATA | N_EXT) | |
3004 | || type == (N_BSS | N_EXT) | |
3005 | || type == (N_ABS | N_EXT) | |
3006 | || type == (N_INDR | N_EXT)) | |
4c3721d5 ILT |
3007 | { |
3008 | /* This object file defines this symbol. We must link it | |
3009 | in. This is true regardless of whether the current | |
3010 | definition of the symbol is undefined or common. If the | |
3011 | current definition is common, we have a case in which we | |
3012 | have already seen an object file including | |
3013 | int a; | |
3014 | and this object file from the archive includes | |
3015 | int a = 5; | |
f88c9008 ILT |
3016 | In such a case we must include this object file. |
3017 | ||
3018 | FIXME: The SunOS 4.1.3 linker will pull in the archive | |
3019 | element if the symbol is defined in the .data section, | |
3020 | but not if it is defined in the .text section. That | |
3021 | seems a bit crazy to me, and I haven't implemented it. | |
3022 | However, it might be correct. */ | |
4c3721d5 ILT |
3023 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) |
3024 | return false; | |
3025 | *pneeded = true; | |
3026 | return true; | |
3027 | } | |
3028 | ||
9b39ed6b | 3029 | if (type == (N_UNDF | N_EXT)) |
4c3721d5 ILT |
3030 | { |
3031 | bfd_vma value; | |
3032 | ||
3033 | value = GET_WORD (abfd, p->e_value); | |
3034 | if (value != 0) | |
3035 | { | |
3036 | /* This symbol is common in the object from the archive | |
3037 | file. */ | |
3038 | if (h->type == bfd_link_hash_undefined) | |
3039 | { | |
3040 | bfd *symbfd; | |
e1f99f60 | 3041 | unsigned int power; |
4c3721d5 ILT |
3042 | |
3043 | symbfd = h->u.undef.abfd; | |
3044 | if (symbfd == (bfd *) NULL) | |
3045 | { | |
3046 | /* This symbol was created as undefined from | |
3047 | outside BFD. We assume that we should link | |
3048 | in the object file. This is done for the -u | |
3049 | option in the linker. */ | |
3050 | if (! (*info->callbacks->add_archive_element) (info, | |
3051 | abfd, | |
3052 | name)) | |
3053 | return false; | |
3054 | *pneeded = true; | |
3055 | return true; | |
3056 | } | |
3057 | /* Turn the current link symbol into a common | |
3058 | symbol. It is already on the undefs list. */ | |
3059 | h->type = bfd_link_hash_common; | |
773033d2 ILT |
3060 | h->u.c.p = ((struct bfd_link_hash_common_entry *) |
3061 | bfd_hash_allocate (&info->hash->table, | |
3062 | sizeof (struct bfd_link_hash_common_entry))); | |
3063 | if (h->u.c.p == NULL) | |
3064 | return false; | |
3065 | ||
4c3721d5 | 3066 | h->u.c.size = value; |
e1f99f60 ILT |
3067 | |
3068 | /* FIXME: This isn't quite right. The maximum | |
3069 | alignment of a common symbol should be set by the | |
3070 | architecture of the output file, not of the input | |
3071 | file. */ | |
3072 | power = bfd_log2 (value); | |
3073 | if (power > bfd_get_arch_info (abfd)->section_align_power) | |
3074 | power = bfd_get_arch_info (abfd)->section_align_power; | |
773033d2 | 3075 | h->u.c.p->alignment_power = power; |
e1f99f60 | 3076 | |
773033d2 ILT |
3077 | h->u.c.p->section = bfd_make_section_old_way (symbfd, |
3078 | "COMMON"); | |
4c3721d5 ILT |
3079 | } |
3080 | else | |
3081 | { | |
3082 | /* Adjust the size of the common symbol if | |
3083 | necessary. */ | |
3084 | if (value > h->u.c.size) | |
3085 | h->u.c.size = value; | |
3086 | } | |
3087 | } | |
3088 | } | |
4298e311 ILT |
3089 | |
3090 | if (type == N_WEAKA | |
3091 | || type == N_WEAKT | |
3092 | || type == N_WEAKD | |
3093 | || type == N_WEAKB) | |
3094 | { | |
3095 | /* This symbol is weak but defined. We must pull it in if | |
3096 | the current link symbol is undefined, but we don't want | |
3097 | it if the current link symbol is common. */ | |
3098 | if (h->type == bfd_link_hash_undefined) | |
3099 | { | |
3100 | if (! (*info->callbacks->add_archive_element) (info, abfd, name)) | |
3101 | return false; | |
3102 | *pneeded = true; | |
3103 | return true; | |
3104 | } | |
3105 | } | |
4c3721d5 ILT |
3106 | } |
3107 | ||
3108 | /* We do not need this object file. */ | |
3109 | return true; | |
3110 | } | |
3111 | ||
3112 | /* Add all symbols from an object file to the hash table. */ | |
3113 | ||
3114 | static boolean | |
3115 | aout_link_add_symbols (abfd, info) | |
3116 | bfd *abfd; | |
3117 | struct bfd_link_info *info; | |
3118 | { | |
e85e8bfe ILT |
3119 | boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *, |
3120 | const char *, flagword, asection *, | |
3121 | bfd_vma, const char *, boolean, | |
3122 | boolean, | |
3123 | struct bfd_link_hash_entry **)); | |
4c3721d5 ILT |
3124 | bfd_size_type sym_count; |
3125 | char *strings; | |
3126 | boolean copy; | |
3127 | struct aout_link_hash_entry **sym_hash; | |
3128 | register struct external_nlist *p; | |
3129 | struct external_nlist *pend; | |
3130 | ||
3131 | sym_count = obj_aout_external_sym_count (abfd); | |
3132 | strings = obj_aout_external_strings (abfd); | |
3133 | if (info->keep_memory) | |
3134 | copy = false; | |
3135 | else | |
3136 | copy = true; | |
3137 | ||
4c3721d5 ILT |
3138 | /* We keep a list of the linker hash table entries that correspond |
3139 | to particular symbols. We could just look them up in the hash | |
3140 | table, but keeping the list is more efficient. Perhaps this | |
3141 | should be conditional on info->keep_memory. */ | |
3142 | sym_hash = ((struct aout_link_hash_entry **) | |
3143 | bfd_alloc (abfd, | |
3144 | ((size_t) sym_count | |
3145 | * sizeof (struct aout_link_hash_entry *)))); | |
e85e8bfe | 3146 | if (sym_hash == NULL && sym_count != 0) |
9783e04a | 3147 | { |
68241b2b | 3148 | bfd_set_error (bfd_error_no_memory); |
9783e04a DM |
3149 | return false; |
3150 | } | |
4c3721d5 ILT |
3151 | obj_aout_sym_hashes (abfd) = sym_hash; |
3152 | ||
e85e8bfe ILT |
3153 | if ((abfd->flags & DYNAMIC) != 0 |
3154 | && aout_backend_info (abfd)->add_dynamic_symbols != NULL) | |
3155 | { | |
3156 | if (! (*aout_backend_info (abfd)->add_dynamic_symbols) (abfd, info)) | |
3157 | return false; | |
3158 | } | |
3159 | ||
3160 | add_one_symbol = aout_backend_info (abfd)->add_one_symbol; | |
3161 | if (add_one_symbol == NULL) | |
3162 | add_one_symbol = _bfd_generic_link_add_one_symbol; | |
3163 | ||
4c3721d5 ILT |
3164 | p = obj_aout_external_syms (abfd); |
3165 | pend = p + sym_count; | |
3166 | for (; p < pend; p++, sym_hash++) | |
3167 | { | |
3168 | int type; | |
3169 | const char *name; | |
3170 | bfd_vma value; | |
3171 | asection *section; | |
3172 | flagword flags; | |
3173 | const char *string; | |
3174 | ||
3175 | *sym_hash = NULL; | |
3176 | ||
3177 | type = bfd_h_get_8 (abfd, p->e_type); | |
3178 | ||
3179 | /* Ignore debugging symbols. */ | |
3180 | if ((type & N_STAB) != 0) | |
3181 | continue; | |
3182 | ||
4c3721d5 ILT |
3183 | name = strings + GET_WORD (abfd, p->e_strx); |
3184 | value = GET_WORD (abfd, p->e_value); | |
3185 | flags = BSF_GLOBAL; | |
3186 | string = NULL; | |
3187 | switch (type) | |
3188 | { | |
3189 | default: | |
3190 | abort (); | |
4298e311 ILT |
3191 | |
3192 | case N_UNDF: | |
3193 | case N_ABS: | |
3194 | case N_TEXT: | |
3195 | case N_DATA: | |
3196 | case N_BSS: | |
3197 | case N_FN_SEQ: | |
3198 | case N_COMM: | |
3199 | case N_SETV: | |
3200 | case N_FN: | |
3201 | /* Ignore symbols that are not externally visible. */ | |
3202 | continue; | |
3203 | case N_INDR: | |
3204 | /* Ignore local indirect symbol. */ | |
3205 | ++p; | |
3206 | ++sym_hash; | |
3207 | continue; | |
3208 | ||
4c3721d5 | 3209 | case N_UNDF | N_EXT: |
4298e311 ILT |
3210 | if (value == 0) |
3211 | { | |
4587b578 | 3212 | section = bfd_und_section_ptr; |
4298e311 ILT |
3213 | flags = 0; |
3214 | } | |
4c3721d5 | 3215 | else |
4587b578 | 3216 | section = bfd_com_section_ptr; |
4c3721d5 ILT |
3217 | break; |
3218 | case N_ABS | N_EXT: | |
4587b578 | 3219 | section = bfd_abs_section_ptr; |
4c3721d5 ILT |
3220 | break; |
3221 | case N_TEXT | N_EXT: | |
3222 | section = obj_textsec (abfd); | |
3223 | value -= bfd_get_section_vma (abfd, section); | |
3224 | break; | |
3225 | case N_DATA | N_EXT: | |
2cd086e3 ILT |
3226 | case N_SETV | N_EXT: |
3227 | /* Treat N_SETV symbols as N_DATA symbol; see comment in | |
3228 | translate_from_native_sym_flags. */ | |
4c3721d5 ILT |
3229 | section = obj_datasec (abfd); |
3230 | value -= bfd_get_section_vma (abfd, section); | |
3231 | break; | |
3232 | case N_BSS | N_EXT: | |
3233 | section = obj_bsssec (abfd); | |
3234 | value -= bfd_get_section_vma (abfd, section); | |
3235 | break; | |
3236 | case N_INDR | N_EXT: | |
3237 | /* An indirect symbol. The next symbol is the symbol | |
3238 | which this one really is. */ | |
3239 | BFD_ASSERT (p + 1 < pend); | |
3240 | ++p; | |
3241 | string = strings + GET_WORD (abfd, p->e_strx); | |
4587b578 | 3242 | section = bfd_ind_section_ptr; |
4c3721d5 ILT |
3243 | flags |= BSF_INDIRECT; |
3244 | break; | |
3245 | case N_COMM | N_EXT: | |
4587b578 | 3246 | section = bfd_com_section_ptr; |
4c3721d5 | 3247 | break; |
964affdc | 3248 | case N_SETA: case N_SETA | N_EXT: |
4587b578 | 3249 | section = bfd_abs_section_ptr; |
4c3721d5 ILT |
3250 | flags |= BSF_CONSTRUCTOR; |
3251 | break; | |
964affdc | 3252 | case N_SETT: case N_SETT | N_EXT: |
4c3721d5 ILT |
3253 | section = obj_textsec (abfd); |
3254 | flags |= BSF_CONSTRUCTOR; | |
3255 | value -= bfd_get_section_vma (abfd, section); | |
3256 | break; | |
964affdc | 3257 | case N_SETD: case N_SETD | N_EXT: |
4c3721d5 ILT |
3258 | section = obj_datasec (abfd); |
3259 | flags |= BSF_CONSTRUCTOR; | |
3260 | value -= bfd_get_section_vma (abfd, section); | |
3261 | break; | |
964affdc | 3262 | case N_SETB: case N_SETB | N_EXT: |
4c3721d5 ILT |
3263 | section = obj_bsssec (abfd); |
3264 | flags |= BSF_CONSTRUCTOR; | |
3265 | value -= bfd_get_section_vma (abfd, section); | |
3266 | break; | |
3267 | case N_WARNING: | |
3268 | /* A warning symbol. The next symbol is the one to warn | |
3269 | about. */ | |
3270 | BFD_ASSERT (p + 1 < pend); | |
3271 | ++p; | |
3272 | string = name; | |
3273 | name = strings + GET_WORD (abfd, p->e_strx); | |
4587b578 | 3274 | section = bfd_und_section_ptr; |
4c3721d5 ILT |
3275 | flags |= BSF_WARNING; |
3276 | break; | |
4298e311 | 3277 | case N_WEAKU: |
4587b578 | 3278 | section = bfd_und_section_ptr; |
4298e311 ILT |
3279 | flags = BSF_WEAK; |
3280 | break; | |
3281 | case N_WEAKA: | |
4587b578 | 3282 | section = bfd_abs_section_ptr; |
4298e311 ILT |
3283 | flags = BSF_WEAK; |
3284 | break; | |
3285 | case N_WEAKT: | |
3286 | section = obj_textsec (abfd); | |
3287 | value -= bfd_get_section_vma (abfd, section); | |
3288 | flags = BSF_WEAK; | |
3289 | break; | |
3290 | case N_WEAKD: | |
3291 | section = obj_datasec (abfd); | |
3292 | value -= bfd_get_section_vma (abfd, section); | |
3293 | flags = BSF_WEAK; | |
3294 | break; | |
3295 | case N_WEAKB: | |
3296 | section = obj_bsssec (abfd); | |
3297 | value -= bfd_get_section_vma (abfd, section); | |
3298 | flags = BSF_WEAK; | |
3299 | break; | |
4c3721d5 ILT |
3300 | } |
3301 | ||
e85e8bfe | 3302 | if (! ((*add_one_symbol) |
e68de5d5 | 3303 | (info, abfd, name, flags, section, value, string, copy, false, |
ec099b4b | 3304 | (struct bfd_link_hash_entry **) sym_hash))) |
4c3721d5 | 3305 | return false; |
53155af1 | 3306 | |
e1f99f60 ILT |
3307 | /* Restrict the maximum alignment of a common symbol based on |
3308 | the architecture, since a.out has no way to represent | |
3309 | alignment requirements of a section in a .o file. FIXME: | |
3310 | This isn't quite right: it should use the architecture of the | |
3311 | output file, not the input files. */ | |
3312 | if ((*sym_hash)->root.type == bfd_link_hash_common | |
773033d2 | 3313 | && ((*sym_hash)->root.u.c.p->alignment_power > |
e1f99f60 | 3314 | bfd_get_arch_info (abfd)->section_align_power)) |
773033d2 | 3315 | (*sym_hash)->root.u.c.p->alignment_power = |
e1f99f60 ILT |
3316 | bfd_get_arch_info (abfd)->section_align_power; |
3317 | ||
f4945271 ILT |
3318 | /* If this is a set symbol, and we are not building sets, then |
3319 | it is possible for the hash entry to not have been set. In | |
3320 | such a case, treat the symbol as not globally defined. */ | |
3321 | if ((*sym_hash)->root.type == bfd_link_hash_new) | |
3322 | { | |
3323 | BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); | |
3324 | *sym_hash = NULL; | |
3325 | } | |
3326 | ||
53155af1 ILT |
3327 | if (type == (N_INDR | N_EXT) || type == N_WARNING) |
3328 | ++sym_hash; | |
4c3721d5 ILT |
3329 | } |
3330 | ||
3331 | return true; | |
3332 | } | |
3333 | ||
3334 | /* During the final link step we need to pass around a bunch of | |
3335 | information, so we do it in an instance of this structure. */ | |
3336 | ||
3337 | struct aout_final_link_info | |
3338 | { | |
3339 | /* General link information. */ | |
3340 | struct bfd_link_info *info; | |
3341 | /* Output bfd. */ | |
3342 | bfd *output_bfd; | |
3343 | /* Reloc file positions. */ | |
3344 | file_ptr treloff, dreloff; | |
3345 | /* File position of symbols. */ | |
3346 | file_ptr symoff; | |
3347 | /* String table. */ | |
1afd2380 ILT |
3348 | struct bfd_strtab_hash *strtab; |
3349 | /* A buffer large enough to hold the contents of any section. */ | |
3350 | bfd_byte *contents; | |
3351 | /* A buffer large enough to hold the relocs of any section. */ | |
3352 | PTR relocs; | |
3353 | /* A buffer large enough to hold the symbol map of any input BFD. */ | |
3354 | int *symbol_map; | |
3355 | /* A buffer large enough to hold output symbols of any input BFD. */ | |
3356 | struct external_nlist *output_syms; | |
4c3721d5 ILT |
3357 | }; |
3358 | ||
3359 | static boolean aout_link_input_bfd | |
3360 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); | |
3361 | static boolean aout_link_write_symbols | |
1afd2380 | 3362 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); |
4c3721d5 ILT |
3363 | static boolean aout_link_write_other_symbol |
3364 | PARAMS ((struct aout_link_hash_entry *, PTR)); | |
3365 | static boolean aout_link_input_section | |
3366 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, | |
3367 | asection *input_section, file_ptr *reloff_ptr, | |
1afd2380 | 3368 | bfd_size_type rel_size)); |
4c3721d5 ILT |
3369 | static boolean aout_link_input_section_std |
3370 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, | |
3371 | asection *input_section, struct reloc_std_external *, | |
1afd2380 | 3372 | bfd_size_type rel_size, bfd_byte *contents)); |
4c3721d5 ILT |
3373 | static boolean aout_link_input_section_ext |
3374 | PARAMS ((struct aout_final_link_info *, bfd *input_bfd, | |
3375 | asection *input_section, struct reloc_ext_external *, | |
1afd2380 | 3376 | bfd_size_type rel_size, bfd_byte *contents)); |
4c3721d5 ILT |
3377 | static INLINE asection *aout_reloc_index_to_section |
3378 | PARAMS ((bfd *, int)); | |
ec099b4b ILT |
3379 | static boolean aout_link_reloc_link_order |
3380 | PARAMS ((struct aout_final_link_info *, asection *, | |
3381 | struct bfd_link_order *)); | |
4c3721d5 ILT |
3382 | |
3383 | /* Do the final link step. This is called on the output BFD. The | |
3384 | INFO structure should point to a list of BFDs linked through the | |
3385 | link_next field which can be used to find each BFD which takes part | |
3386 | in the output. Also, each section in ABFD should point to a list | |
3387 | of bfd_link_order structures which list all the input sections for | |
3388 | the output section. */ | |
3389 | ||
3390 | boolean | |
3391 | NAME(aout,final_link) (abfd, info, callback) | |
3392 | bfd *abfd; | |
3393 | struct bfd_link_info *info; | |
3394 | void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *)); | |
3395 | { | |
3396 | struct aout_final_link_info aout_info; | |
3397 | register bfd *sub; | |
1afd2380 ILT |
3398 | bfd_size_type trsize, drsize; |
3399 | size_t max_contents_size; | |
3400 | size_t max_relocs_size; | |
3401 | size_t max_sym_count; | |
4c3721d5 ILT |
3402 | bfd_size_type text_size; |
3403 | file_ptr text_end; | |
3404 | register struct bfd_link_order *p; | |
3405 | asection *o; | |
ec099b4b | 3406 | boolean have_link_order_relocs; |
4c3721d5 ILT |
3407 | |
3408 | aout_info.info = info; | |
3409 | aout_info.output_bfd = abfd; | |
1afd2380 ILT |
3410 | aout_info.contents = NULL; |
3411 | aout_info.relocs = NULL; | |
3412 | ||
3413 | /* Figure out the largest section size. Also, if generating | |
3414 | relocateable output, count the relocs. */ | |
3415 | trsize = 0; | |
3416 | drsize = 0; | |
3417 | max_contents_size = 0; | |
3418 | max_relocs_size = 0; | |
3419 | max_sym_count = 0; | |
3420 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
4c3721d5 | 3421 | { |
1afd2380 | 3422 | size_t sz; |
4c3721d5 | 3423 | |
1afd2380 | 3424 | if (info->relocateable) |
4c3721d5 | 3425 | { |
6c8fa8e6 | 3426 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
4c3721d5 ILT |
3427 | { |
3428 | trsize += exec_hdr (sub)->a_trsize; | |
3429 | drsize += exec_hdr (sub)->a_drsize; | |
3430 | } | |
3431 | else | |
3432 | { | |
3433 | /* FIXME: We need to identify the .text and .data sections | |
3434 | and call get_reloc_upper_bound and canonicalize_reloc to | |
3435 | work out the number of relocs needed, and then multiply | |
3436 | by the reloc size. */ | |
3437 | abort (); | |
3438 | } | |
3439 | } | |
1afd2380 | 3440 | |
204ba9e3 ILT |
3441 | if (bfd_get_flavour (sub) == bfd_target_aout_flavour) |
3442 | { | |
3443 | sz = bfd_section_size (sub, obj_textsec (sub)); | |
3444 | if (sz > max_contents_size) | |
3445 | max_contents_size = sz; | |
3446 | sz = bfd_section_size (sub, obj_datasec (sub)); | |
3447 | if (sz > max_contents_size) | |
3448 | max_contents_size = sz; | |
3449 | ||
3450 | sz = exec_hdr (sub)->a_trsize; | |
3451 | if (sz > max_relocs_size) | |
3452 | max_relocs_size = sz; | |
3453 | sz = exec_hdr (sub)->a_drsize; | |
3454 | if (sz > max_relocs_size) | |
3455 | max_relocs_size = sz; | |
3456 | ||
3457 | sz = obj_aout_external_sym_count (sub); | |
3458 | if (sz > max_sym_count) | |
3459 | max_sym_count = sz; | |
3460 | } | |
1afd2380 ILT |
3461 | } |
3462 | ||
3463 | if (info->relocateable) | |
3464 | { | |
ec6b18c4 ILT |
3465 | if (obj_textsec (abfd) != (asection *) NULL) |
3466 | trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) | |
3467 | ->link_order_head) | |
3468 | * obj_reloc_entry_size (abfd)); | |
ec6b18c4 ILT |
3469 | if (obj_datasec (abfd) != (asection *) NULL) |
3470 | drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) | |
3471 | ->link_order_head) | |
3472 | * obj_reloc_entry_size (abfd)); | |
4c3721d5 ILT |
3473 | } |
3474 | ||
1afd2380 ILT |
3475 | exec_hdr (abfd)->a_trsize = trsize; |
3476 | exec_hdr (abfd)->a_drsize = drsize; | |
3477 | ||
964affdc DM |
3478 | exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); |
3479 | ||
4c3721d5 ILT |
3480 | /* Adjust the section sizes and vmas according to the magic number. |
3481 | This sets a_text, a_data and a_bss in the exec_hdr and sets the | |
3482 | filepos for each section. */ | |
3483 | if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) | |
1afd2380 | 3484 | goto error_return; |
4c3721d5 ILT |
3485 | |
3486 | /* The relocation and symbol file positions differ among a.out | |
3487 | targets. We are passed a callback routine from the backend | |
3488 | specific code to handle this. | |
3489 | FIXME: At this point we do not know how much space the symbol | |
3490 | table will require. This will not work for any (nonstandard) | |
3491 | a.out target that needs to know the symbol table size before it | |
3492 | can compute the relocation file positions. This may or may not | |
3493 | be the case for the hp300hpux target, for example. */ | |
3494 | (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, | |
3495 | &aout_info.symoff); | |
3496 | obj_textsec (abfd)->rel_filepos = aout_info.treloff; | |
3497 | obj_datasec (abfd)->rel_filepos = aout_info.dreloff; | |
3498 | obj_sym_filepos (abfd) = aout_info.symoff; | |
3499 | ||
3500 | /* We keep a count of the symbols as we output them. */ | |
3501 | obj_aout_external_sym_count (abfd) = 0; | |
3502 | ||
3503 | /* We accumulate the string table as we write out the symbols. */ | |
1afd2380 ILT |
3504 | aout_info.strtab = _bfd_stringtab_init (); |
3505 | if (aout_info.strtab == NULL) | |
3506 | goto error_return; | |
3507 | ||
3508 | /* Allocate buffers to hold section contents and relocs. */ | |
3509 | aout_info.contents = (bfd_byte *) malloc (max_contents_size); | |
3510 | aout_info.relocs = (PTR) malloc (max_relocs_size); | |
3511 | aout_info.symbol_map = (int *) malloc (max_sym_count * sizeof (int *)); | |
3512 | aout_info.output_syms = ((struct external_nlist *) | |
3513 | malloc ((max_sym_count + 1) | |
3514 | * sizeof (struct external_nlist))); | |
3515 | if ((aout_info.contents == NULL && max_contents_size != 0) | |
3516 | || (aout_info.relocs == NULL && max_relocs_size != 0) | |
3517 | || (aout_info.symbol_map == NULL && max_sym_count != 0) | |
3518 | || aout_info.output_syms == NULL) | |
3519 | { | |
3520 | bfd_set_error (bfd_error_no_memory); | |
3521 | goto error_return; | |
3522 | } | |
4c3721d5 ILT |
3523 | |
3524 | /* The most time efficient way to do the link would be to read all | |
3525 | the input object files into memory and then sort out the | |
3526 | information into the output file. Unfortunately, that will | |
3527 | probably use too much memory. Another method would be to step | |
3528 | through everything that composes the text section and write it | |
3529 | out, and then everything that composes the data section and write | |
3530 | it out, and then write out the relocs, and then write out the | |
3531 | symbols. Unfortunately, that requires reading stuff from each | |
3532 | input file several times, and we will not be able to keep all the | |
3533 | input files open simultaneously, and reopening them will be slow. | |
3534 | ||
3535 | What we do is basically process one input file at a time. We do | |
3536 | everything we need to do with an input file once--copy over the | |
3537 | section contents, handle the relocation information, and write | |
3538 | out the symbols--and then we throw away the information we read | |
3539 | from it. This approach requires a lot of lseeks of the output | |
3540 | file, which is unfortunate but still faster than reopening a lot | |
3541 | of files. | |
3542 | ||
3543 | We use the output_has_begun field of the input BFDs to see | |
3544 | whether we have already handled it. */ | |
3545 | for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next) | |
3546 | sub->output_has_begun = false; | |
3547 | ||
ec099b4b | 3548 | have_link_order_relocs = false; |
4c3721d5 ILT |
3549 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
3550 | { | |
4c3721d5 ILT |
3551 | for (p = o->link_order_head; |
3552 | p != (struct bfd_link_order *) NULL; | |
3553 | p = p->next) | |
3554 | { | |
e68de5d5 ILT |
3555 | if (p->type == bfd_indirect_link_order |
3556 | && (bfd_get_flavour (p->u.indirect.section->owner) | |
3557 | == bfd_target_aout_flavour)) | |
4c3721d5 | 3558 | { |
e68de5d5 ILT |
3559 | bfd *input_bfd; |
3560 | ||
4c3721d5 | 3561 | input_bfd = p->u.indirect.section->owner; |
e68de5d5 | 3562 | if (! input_bfd->output_has_begun) |
4c3721d5 | 3563 | { |
e68de5d5 | 3564 | if (! aout_link_input_bfd (&aout_info, input_bfd)) |
1afd2380 | 3565 | goto error_return; |
e68de5d5 | 3566 | input_bfd->output_has_begun = true; |
4c3721d5 | 3567 | } |
e68de5d5 | 3568 | } |
ec099b4b ILT |
3569 | else if (p->type == bfd_section_reloc_link_order |
3570 | || p->type == bfd_symbol_reloc_link_order) | |
3571 | { | |
3572 | /* These are handled below. */ | |
3573 | have_link_order_relocs = true; | |
3574 | } | |
e68de5d5 ILT |
3575 | else |
3576 | { | |
4c3721d5 | 3577 | if (! _bfd_default_link_order (abfd, info, o, p)) |
1afd2380 | 3578 | goto error_return; |
4c3721d5 ILT |
3579 | } |
3580 | } | |
3581 | } | |
3582 | ||
3583 | /* Write out any symbols that we have not already written out. */ | |
3584 | aout_link_hash_traverse (aout_hash_table (info), | |
3585 | aout_link_write_other_symbol, | |
3586 | (PTR) &aout_info); | |
3587 | ||
ec099b4b ILT |
3588 | /* Now handle any relocs we were asked to create by the linker. |
3589 | These did not come from any input file. We must do these after | |
3590 | we have written out all the symbols, so that we know the symbol | |
3591 | indices to use. */ | |
3592 | if (have_link_order_relocs) | |
3593 | { | |
3594 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) | |
3595 | { | |
3596 | for (p = o->link_order_head; | |
3597 | p != (struct bfd_link_order *) NULL; | |
3598 | p = p->next) | |
3599 | { | |
3600 | if (p->type == bfd_section_reloc_link_order | |
3601 | || p->type == bfd_symbol_reloc_link_order) | |
3602 | { | |
3603 | if (! aout_link_reloc_link_order (&aout_info, o, p)) | |
1afd2380 | 3604 | goto error_return; |
ec099b4b ILT |
3605 | } |
3606 | } | |
3607 | } | |
3608 | } | |
3609 | ||
1afd2380 ILT |
3610 | if (aout_info.contents != NULL) |
3611 | { | |
3612 | free (aout_info.contents); | |
3613 | aout_info.contents = NULL; | |
3614 | } | |
3615 | if (aout_info.relocs != NULL) | |
3616 | { | |
3617 | free (aout_info.relocs); | |
3618 | aout_info.relocs = NULL; | |
3619 | } | |
3620 | if (aout_info.symbol_map != NULL) | |
3621 | { | |
3622 | free (aout_info.symbol_map); | |
3623 | aout_info.symbol_map = NULL; | |
3624 | } | |
3625 | if (aout_info.output_syms != NULL) | |
3626 | { | |
3627 | free (aout_info.output_syms); | |
3628 | aout_info.output_syms = NULL; | |
3629 | } | |
3630 | ||
e85e8bfe ILT |
3631 | /* Finish up any dynamic linking we may be doing. */ |
3632 | if (aout_backend_info (abfd)->finish_dynamic_link != NULL) | |
3633 | { | |
3634 | if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) | |
1afd2380 | 3635 | goto error_return; |
e85e8bfe ILT |
3636 | } |
3637 | ||
4c3721d5 ILT |
3638 | /* Update the header information. */ |
3639 | abfd->symcount = obj_aout_external_sym_count (abfd); | |
3640 | exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; | |
3641 | obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; | |
3642 | obj_textsec (abfd)->reloc_count = | |
3643 | exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); | |
3644 | obj_datasec (abfd)->reloc_count = | |
3645 | exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); | |
3646 | ||
3647 | /* Write out the string table. */ | |
3648 | if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0) | |
1afd2380 ILT |
3649 | goto error_return; |
3650 | return emit_stringtab (abfd, aout_info.strtab); | |
3651 | ||
3652 | error_return: | |
3653 | if (aout_info.contents != NULL) | |
3654 | free (aout_info.contents); | |
3655 | if (aout_info.relocs != NULL) | |
3656 | free (aout_info.relocs); | |
3657 | if (aout_info.symbol_map != NULL) | |
3658 | free (aout_info.symbol_map); | |
3659 | if (aout_info.output_syms != NULL) | |
3660 | free (aout_info.output_syms); | |
3661 | return false; | |
4c3721d5 ILT |
3662 | } |
3663 | ||
3664 | /* Link an a.out input BFD into the output file. */ | |
3665 | ||
3666 | static boolean | |
3667 | aout_link_input_bfd (finfo, input_bfd) | |
3668 | struct aout_final_link_info *finfo; | |
3669 | bfd *input_bfd; | |
3670 | { | |
3671 | bfd_size_type sym_count; | |
4c3721d5 ILT |
3672 | |
3673 | BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); | |
3674 | ||
e85e8bfe ILT |
3675 | /* If this is a dynamic object, it may need special handling. */ |
3676 | if ((input_bfd->flags & DYNAMIC) != 0 | |
3677 | && aout_backend_info (input_bfd)->link_dynamic_object != NULL) | |
3678 | { | |
3679 | return ((*aout_backend_info (input_bfd)->link_dynamic_object) | |
3680 | (finfo->info, input_bfd)); | |
3681 | } | |
3682 | ||
4c3721d5 ILT |
3683 | /* Get the symbols. We probably have them already, unless |
3684 | finfo->info->keep_memory is false. */ | |
5c8444f8 | 3685 | if (! aout_get_external_symbols (input_bfd)) |
4c3721d5 ILT |
3686 | return false; |
3687 | ||
3688 | sym_count = obj_aout_external_sym_count (input_bfd); | |
4c3721d5 | 3689 | |
1afd2380 ILT |
3690 | /* Write out the symbols and get a map of the new indices. The map |
3691 | is placed into finfo->symbol_map. */ | |
3692 | if (! aout_link_write_symbols (finfo, input_bfd)) | |
3693 | return false; | |
4c3721d5 | 3694 | |
1afd2380 ILT |
3695 | /* Relocate and write out the sections. These functions use the |
3696 | symbol map created by aout_link_write_symbols. */ | |
4c3721d5 ILT |
3697 | if (! aout_link_input_section (finfo, input_bfd, |
3698 | obj_textsec (input_bfd), | |
3699 | &finfo->treloff, | |
1afd2380 | 3700 | exec_hdr (input_bfd)->a_trsize) |
4c3721d5 ILT |
3701 | || ! aout_link_input_section (finfo, input_bfd, |
3702 | obj_datasec (input_bfd), | |
3703 | &finfo->dreloff, | |
1afd2380 ILT |
3704 | exec_hdr (input_bfd)->a_drsize)) |
3705 | return false; | |
4c3721d5 ILT |
3706 | |
3707 | /* If we are not keeping memory, we don't need the symbols any | |
3708 | longer. We still need them if we are keeping memory, because the | |
3709 | strings in the hash table point into them. */ | |
3710 | if (! finfo->info->keep_memory) | |
3711 | { | |
3712 | if (! aout_link_free_symbols (input_bfd)) | |
1afd2380 | 3713 | return false; |
4c3721d5 ILT |
3714 | } |
3715 | ||
3716 | return true; | |
3717 | } | |
3718 | ||
3719 | /* Adjust and write out the symbols for an a.out file. Set the new | |
3720 | symbol indices into a symbol_map. */ | |
3721 | ||
3722 | static boolean | |
1afd2380 | 3723 | aout_link_write_symbols (finfo, input_bfd) |
4c3721d5 ILT |
3724 | struct aout_final_link_info *finfo; |
3725 | bfd *input_bfd; | |
4c3721d5 ILT |
3726 | { |
3727 | bfd *output_bfd; | |
3728 | bfd_size_type sym_count; | |
3729 | char *strings; | |
3730 | enum bfd_link_strip strip; | |
3731 | enum bfd_link_discard discard; | |
4c3721d5 | 3732 | struct external_nlist *outsym; |
d17fc4c9 | 3733 | bfd_size_type strtab_index; |
4c3721d5 ILT |
3734 | register struct external_nlist *sym; |
3735 | struct external_nlist *sym_end; | |
3736 | struct aout_link_hash_entry **sym_hash; | |
1afd2380 | 3737 | int *symbol_map; |
4c3721d5 | 3738 | boolean pass; |
ab0434c2 | 3739 | boolean skip_next; |
4c3721d5 ILT |
3740 | |
3741 | output_bfd = finfo->output_bfd; | |
3742 | sym_count = obj_aout_external_sym_count (input_bfd); | |
3743 | strings = obj_aout_external_strings (input_bfd); | |
3744 | strip = finfo->info->strip; | |
3745 | discard = finfo->info->discard; | |
1afd2380 | 3746 | outsym = finfo->output_syms; |
4c3721d5 ILT |
3747 | |
3748 | /* First write out a symbol for this object file, unless we are | |
3749 | discarding such symbols. */ | |
3750 | if (strip != strip_all | |
3751 | && (strip != strip_some | |
3752 | || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename, | |
3753 | false, false) != NULL) | |
3754 | && discard != discard_all) | |
3755 | { | |
3756 | bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type); | |
3757 | bfd_h_put_8 (output_bfd, 0, outsym->e_other); | |
3758 | bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc); | |
1afd2380 | 3759 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, |
d17fc4c9 ILT |
3760 | input_bfd->filename, false); |
3761 | if (strtab_index == (bfd_size_type) -1) | |
1afd2380 | 3762 | return false; |
d17fc4c9 | 3763 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); |
4c3721d5 | 3764 | PUT_WORD (output_bfd, |
2edc8357 ILT |
3765 | (bfd_get_section_vma (output_bfd, |
3766 | obj_textsec (input_bfd)->output_section) | |
3767 | + obj_textsec (input_bfd)->output_offset), | |
4c3721d5 ILT |
3768 | outsym->e_value); |
3769 | ++obj_aout_external_sym_count (output_bfd); | |
3770 | ++outsym; | |
3771 | } | |
3772 | ||
3773 | pass = false; | |
ab0434c2 | 3774 | skip_next = false; |
4c3721d5 ILT |
3775 | sym = obj_aout_external_syms (input_bfd); |
3776 | sym_end = sym + sym_count; | |
3777 | sym_hash = obj_aout_sym_hashes (input_bfd); | |
1afd2380 | 3778 | symbol_map = finfo->symbol_map; |
4c3721d5 ILT |
3779 | for (; sym < sym_end; sym++, sym_hash++, symbol_map++) |
3780 | { | |
3781 | const char *name; | |
3782 | int type; | |
d6d6b18a | 3783 | struct aout_link_hash_entry *h; |
4c3721d5 ILT |
3784 | boolean skip; |
3785 | asection *symsec; | |
3786 | bfd_vma val = 0; | |
d17fc4c9 | 3787 | boolean copy; |
4c3721d5 ILT |
3788 | |
3789 | *symbol_map = -1; | |
3790 | ||
3791 | type = bfd_h_get_8 (input_bfd, sym->e_type); | |
3792 | name = strings + GET_WORD (input_bfd, sym->e_strx); | |
3793 | ||
d6d6b18a ILT |
3794 | h = NULL; |
3795 | ||
4c3721d5 ILT |
3796 | if (pass) |
3797 | { | |
53155af1 ILT |
3798 | /* Pass this symbol through. It is the target of an |
3799 | indirect or warning symbol. */ | |
4c3721d5 ILT |
3800 | val = GET_WORD (input_bfd, sym->e_value); |
3801 | pass = false; | |
3802 | } | |
ab0434c2 | 3803 | else if (skip_next) |
53155af1 ILT |
3804 | { |
3805 | /* Skip this symbol, which is the target of an indirect | |
3806 | symbol that we have changed to no longer be an indirect | |
3807 | symbol. */ | |
ab0434c2 | 3808 | skip_next = false; |
53155af1 ILT |
3809 | continue; |
3810 | } | |
4c3721d5 ILT |
3811 | else |
3812 | { | |
53155af1 | 3813 | struct aout_link_hash_entry *hresolve; |
4c3721d5 ILT |
3814 | |
3815 | /* We have saved the hash table entry for this symbol, if | |
3816 | there is one. Note that we could just look it up again | |
3817 | in the hash table, provided we first check that it is an | |
3818 | external symbol. */ | |
3819 | h = *sym_hash; | |
3820 | ||
3a5b50f4 ILT |
3821 | /* If this is an indirect or warning symbol, then change |
3822 | hresolve to the base symbol. We also change *sym_hash so | |
3823 | that the relocation routines relocate against the real | |
3824 | symbol. */ | |
53155af1 ILT |
3825 | hresolve = h; |
3826 | if (h != (struct aout_link_hash_entry *) NULL | |
3a5b50f4 ILT |
3827 | && (h->root.type == bfd_link_hash_indirect |
3828 | || h->root.type == bfd_link_hash_warning)) | |
53155af1 ILT |
3829 | { |
3830 | hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; | |
118e8d1c ILT |
3831 | while (hresolve->root.type == bfd_link_hash_indirect |
3832 | || hresolve->root.type == bfd_link_hash_warning) | |
53155af1 ILT |
3833 | hresolve = ((struct aout_link_hash_entry *) |
3834 | hresolve->root.u.i.link); | |
3835 | *sym_hash = hresolve; | |
3836 | } | |
3837 | ||
4c3721d5 ILT |
3838 | /* If the symbol has already been written out, skip it. */ |
3839 | if (h != (struct aout_link_hash_entry *) NULL | |
e85e8bfe | 3840 | && h->root.type != bfd_link_hash_warning |
35fee729 | 3841 | && h->written) |
4c3721d5 | 3842 | { |
ab0434c2 ILT |
3843 | if ((type & N_TYPE) == N_INDR |
3844 | || type == N_WARNING) | |
3845 | skip_next = true; | |
4c3721d5 ILT |
3846 | *symbol_map = h->indx; |
3847 | continue; | |
3848 | } | |
3849 | ||
3850 | /* See if we are stripping this symbol. */ | |
3851 | skip = false; | |
3852 | switch (strip) | |
3853 | { | |
3854 | case strip_none: | |
3855 | break; | |
3856 | case strip_debugger: | |
3857 | if ((type & N_STAB) != 0) | |
3858 | skip = true; | |
3859 | break; | |
3860 | case strip_some: | |
3861 | if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false) | |
3862 | == NULL) | |
3863 | skip = true; | |
3864 | break; | |
3865 | case strip_all: | |
3866 | skip = true; | |
3867 | break; | |
3868 | } | |
3869 | if (skip) | |
3870 | { | |
3871 | if (h != (struct aout_link_hash_entry *) NULL) | |
35fee729 | 3872 | h->written = true; |
4c3721d5 ILT |
3873 | continue; |
3874 | } | |
3875 | ||
3876 | /* Get the value of the symbol. */ | |
4298e311 ILT |
3877 | if ((type & N_TYPE) == N_TEXT |
3878 | || type == N_WEAKT) | |
4c3721d5 | 3879 | symsec = obj_textsec (input_bfd); |
4298e311 ILT |
3880 | else if ((type & N_TYPE) == N_DATA |
3881 | || type == N_WEAKD) | |
4c3721d5 | 3882 | symsec = obj_datasec (input_bfd); |
4298e311 ILT |
3883 | else if ((type & N_TYPE) == N_BSS |
3884 | || type == N_WEAKB) | |
4c3721d5 | 3885 | symsec = obj_bsssec (input_bfd); |
4298e311 ILT |
3886 | else if ((type & N_TYPE) == N_ABS |
3887 | || type == N_WEAKA) | |
4587b578 | 3888 | symsec = bfd_abs_section_ptr; |
53155af1 ILT |
3889 | else if (((type & N_TYPE) == N_INDR |
3890 | && (hresolve == (struct aout_link_hash_entry *) NULL | |
3891 | || (hresolve->root.type != bfd_link_hash_defined | |
6c97aedf | 3892 | && hresolve->root.type != bfd_link_hash_defweak |
53155af1 | 3893 | && hresolve->root.type != bfd_link_hash_common))) |
4c3721d5 ILT |
3894 | || type == N_WARNING) |
3895 | { | |
53155af1 ILT |
3896 | /* Pass the next symbol through unchanged. The |
3897 | condition above for indirect symbols is so that if | |
3898 | the indirect symbol was defined, we output it with | |
3899 | the correct definition so the debugger will | |
3900 | understand it. */ | |
4c3721d5 ILT |
3901 | pass = true; |
3902 | val = GET_WORD (input_bfd, sym->e_value); | |
3903 | symsec = NULL; | |
3904 | } | |
3905 | else if ((type & N_STAB) != 0) | |
3906 | { | |
3907 | val = GET_WORD (input_bfd, sym->e_value); | |
3908 | symsec = NULL; | |
3909 | } | |
3910 | else | |
3911 | { | |
53155af1 ILT |
3912 | /* If we get here with an indirect symbol, it means that |
3913 | we are outputting it with a real definition. In such | |
3914 | a case we do not want to output the next symbol, | |
3915 | which is the target of the indirection. */ | |
3916 | if ((type & N_TYPE) == N_INDR) | |
ab0434c2 | 3917 | skip_next = true; |
53155af1 | 3918 | |
f4945271 ILT |
3919 | symsec = NULL; |
3920 | ||
53155af1 ILT |
3921 | /* We need to get the value from the hash table. We use |
3922 | hresolve so that if we have defined an indirect | |
3923 | symbol we output the final definition. */ | |
4c3721d5 | 3924 | if (h == (struct aout_link_hash_entry *) NULL) |
f4945271 ILT |
3925 | { |
3926 | switch (type & N_TYPE) | |
3927 | { | |
3928 | case N_SETT: | |
3929 | symsec = obj_textsec (input_bfd); | |
3930 | break; | |
3931 | case N_SETD: | |
3932 | symsec = obj_datasec (input_bfd); | |
3933 | break; | |
3934 | case N_SETB: | |
3935 | symsec = obj_bsssec (input_bfd); | |
3936 | break; | |
3937 | case N_SETA: | |
3938 | symsec = bfd_abs_section_ptr; | |
3939 | break; | |
3940 | default: | |
3941 | val = 0; | |
3942 | break; | |
3943 | } | |
3944 | } | |
6c97aedf ILT |
3945 | else if (hresolve->root.type == bfd_link_hash_defined |
3946 | || hresolve->root.type == bfd_link_hash_defweak) | |
4c3721d5 | 3947 | { |
53155af1 | 3948 | asection *input_section; |
4c3721d5 ILT |
3949 | asection *output_section; |
3950 | ||
6c97aedf ILT |
3951 | /* This case usually means a common symbol which was |
3952 | turned into a defined symbol. */ | |
53155af1 ILT |
3953 | input_section = hresolve->root.u.def.section; |
3954 | output_section = input_section->output_section; | |
4587b578 | 3955 | BFD_ASSERT (bfd_is_abs_section (output_section) |
4c3721d5 | 3956 | || output_section->owner == output_bfd); |
53155af1 | 3957 | val = (hresolve->root.u.def.value |
4c3721d5 | 3958 | + bfd_get_section_vma (output_bfd, output_section) |
53155af1 | 3959 | + input_section->output_offset); |
4c3721d5 ILT |
3960 | |
3961 | /* Get the correct type based on the section. If | |
3962 | this is a constructed set, force it to be | |
3963 | globally visible. */ | |
3964 | if (type == N_SETT | |
3965 | || type == N_SETD | |
3966 | || type == N_SETB | |
3967 | || type == N_SETA) | |
3968 | type |= N_EXT; | |
3969 | ||
3970 | type &=~ N_TYPE; | |
3971 | ||
3972 | if (output_section == obj_textsec (output_bfd)) | |
6c97aedf ILT |
3973 | type |= (hresolve->root.type == bfd_link_hash_defined |
3974 | ? N_TEXT | |
3975 | : N_WEAKT); | |
4c3721d5 | 3976 | else if (output_section == obj_datasec (output_bfd)) |
6c97aedf ILT |
3977 | type |= (hresolve->root.type == bfd_link_hash_defined |
3978 | ? N_DATA | |
3979 | : N_WEAKD); | |
4c3721d5 | 3980 | else if (output_section == obj_bsssec (output_bfd)) |
6c97aedf ILT |
3981 | type |= (hresolve->root.type == bfd_link_hash_defined |
3982 | ? N_BSS | |
3983 | : N_WEAKB); | |
4c3721d5 | 3984 | else |
6c97aedf ILT |
3985 | type |= (hresolve->root.type == bfd_link_hash_defined |
3986 | ? N_ABS | |
3987 | : N_WEAKA); | |
4c3721d5 | 3988 | } |
53155af1 ILT |
3989 | else if (hresolve->root.type == bfd_link_hash_common) |
3990 | val = hresolve->root.u.c.size; | |
6c97aedf | 3991 | else if (hresolve->root.type == bfd_link_hash_undefweak) |
4298e311 ILT |
3992 | { |
3993 | val = 0; | |
3994 | type = N_WEAKU; | |
3995 | } | |
4c3721d5 ILT |
3996 | else |
3997 | val = 0; | |
4c3721d5 ILT |
3998 | } |
3999 | if (symsec != (asection *) NULL) | |
4000 | val = (symsec->output_section->vma | |
4001 | + symsec->output_offset | |
4002 | + (GET_WORD (input_bfd, sym->e_value) | |
4003 | - symsec->vma)); | |
4004 | ||
4005 | /* If this is a global symbol set the written flag, and if | |
4006 | it is a local symbol see if we should discard it. */ | |
4007 | if (h != (struct aout_link_hash_entry *) NULL) | |
4008 | { | |
35fee729 | 4009 | h->written = true; |
4c3721d5 ILT |
4010 | h->indx = obj_aout_external_sym_count (output_bfd); |
4011 | } | |
f4945271 ILT |
4012 | else if ((type & N_TYPE) != N_SETT |
4013 | && (type & N_TYPE) != N_SETD | |
4014 | && (type & N_TYPE) != N_SETB | |
4015 | && (type & N_TYPE) != N_SETA) | |
4c3721d5 ILT |
4016 | { |
4017 | switch (discard) | |
4018 | { | |
4019 | case discard_none: | |
4020 | break; | |
4021 | case discard_l: | |
4022 | if (*name == *finfo->info->lprefix | |
4023 | && (finfo->info->lprefix_len == 1 | |
4024 | || strncmp (name, finfo->info->lprefix, | |
4025 | finfo->info->lprefix_len) == 0)) | |
4026 | skip = true; | |
4027 | break; | |
4028 | case discard_all: | |
4029 | skip = true; | |
4030 | break; | |
4031 | } | |
4032 | if (skip) | |
4033 | { | |
4034 | pass = false; | |
4035 | continue; | |
4036 | } | |
4037 | } | |
4038 | } | |
4039 | ||
4040 | /* Copy this symbol into the list of symbols we are going to | |
4041 | write out. */ | |
4042 | bfd_h_put_8 (output_bfd, type, outsym->e_type); | |
4043 | bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other), | |
4044 | outsym->e_other); | |
4045 | bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc), | |
4046 | outsym->e_desc); | |
d17fc4c9 | 4047 | copy = false; |
d6d6b18a ILT |
4048 | if (! finfo->info->keep_memory) |
4049 | { | |
4050 | /* name points into a string table which we are going to | |
4051 | free. If there is a hash table entry, use that string. | |
4052 | Otherwise, copy name into memory. */ | |
4053 | if (h != (struct aout_link_hash_entry *) NULL) | |
1afd2380 | 4054 | name = h->root.root.string; |
d6d6b18a | 4055 | else |
d17fc4c9 | 4056 | copy = true; |
d6d6b18a | 4057 | } |
1afd2380 | 4058 | strtab_index = add_to_stringtab (output_bfd, finfo->strtab, |
d17fc4c9 ILT |
4059 | name, copy); |
4060 | if (strtab_index == (bfd_size_type) -1) | |
1afd2380 | 4061 | return false; |
d17fc4c9 | 4062 | PUT_WORD (output_bfd, strtab_index, outsym->e_strx); |
4c3721d5 ILT |
4063 | PUT_WORD (output_bfd, val, outsym->e_value); |
4064 | *symbol_map = obj_aout_external_sym_count (output_bfd); | |
4065 | ++obj_aout_external_sym_count (output_bfd); | |
4066 | ++outsym; | |
4067 | } | |
4068 | ||
4069 | /* Write out the output symbols we have just constructed. */ | |
1afd2380 | 4070 | if (outsym > finfo->output_syms) |
4c3721d5 ILT |
4071 | { |
4072 | bfd_size_type outsym_count; | |
4073 | ||
4074 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0) | |
1afd2380 ILT |
4075 | return false; |
4076 | outsym_count = outsym - finfo->output_syms; | |
4077 | if (bfd_write ((PTR) finfo->output_syms, | |
4078 | (bfd_size_type) EXTERNAL_NLIST_SIZE, | |
4c3721d5 ILT |
4079 | (bfd_size_type) outsym_count, output_bfd) |
4080 | != outsym_count * EXTERNAL_NLIST_SIZE) | |
1afd2380 | 4081 | return false; |
4c3721d5 ILT |
4082 | finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE; |
4083 | } | |
4084 | ||
4085 | return true; | |
4086 | } | |
4087 | ||
4088 | /* Write out a symbol that was not associated with an a.out input | |
4089 | object. */ | |
4090 | ||
4091 | static boolean | |
4092 | aout_link_write_other_symbol (h, data) | |
4093 | struct aout_link_hash_entry *h; | |
4094 | PTR data; | |
4095 | { | |
4096 | struct aout_final_link_info *finfo = (struct aout_final_link_info *) data; | |
4097 | bfd *output_bfd; | |
4098 | int type; | |
4099 | bfd_vma val; | |
4100 | struct external_nlist outsym; | |
d17fc4c9 | 4101 | bfd_size_type indx; |
4c3721d5 | 4102 | |
e85e8bfe ILT |
4103 | output_bfd = finfo->output_bfd; |
4104 | ||
4105 | if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) | |
4106 | { | |
4107 | if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) | |
4108 | (output_bfd, finfo->info, h))) | |
4109 | { | |
4110 | /* FIXME: No way to handle errors. */ | |
4111 | abort (); | |
4112 | } | |
4113 | } | |
4114 | ||
35fee729 | 4115 | if (h->written) |
4c3721d5 ILT |
4116 | return true; |
4117 | ||
35fee729 | 4118 | h->written = true; |
9783e04a | 4119 | |
74942465 ILT |
4120 | /* An indx of -2 means the symbol must be written. */ |
4121 | if (h->indx != -2 | |
4122 | && (finfo->info->strip == strip_all | |
4123 | || (finfo->info->strip == strip_some | |
4124 | && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string, | |
4125 | false, false) == NULL))) | |
9783e04a DM |
4126 | return true; |
4127 | ||
4c3721d5 ILT |
4128 | switch (h->root.type) |
4129 | { | |
4130 | default: | |
4c3721d5 ILT |
4131 | abort (); |
4132 | /* Avoid variable not initialized warnings. */ | |
4133 | return true; | |
f4945271 ILT |
4134 | case bfd_link_hash_new: |
4135 | /* This can happen for set symbols when sets are not being | |
4136 | built. */ | |
4137 | return true; | |
4c3721d5 ILT |
4138 | case bfd_link_hash_undefined: |
4139 | type = N_UNDF | N_EXT; | |
4140 | val = 0; | |
4141 | break; | |
4142 | case bfd_link_hash_defined: | |
6c97aedf | 4143 | case bfd_link_hash_defweak: |
4c3721d5 ILT |
4144 | { |
4145 | asection *sec; | |
4146 | ||
4f019d04 | 4147 | sec = h->root.u.def.section->output_section; |
4587b578 | 4148 | BFD_ASSERT (bfd_is_abs_section (sec) |
4c3721d5 ILT |
4149 | || sec->owner == output_bfd); |
4150 | if (sec == obj_textsec (output_bfd)) | |
6c97aedf | 4151 | type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; |
4c3721d5 | 4152 | else if (sec == obj_datasec (output_bfd)) |
6c97aedf | 4153 | type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; |
4c3721d5 | 4154 | else if (sec == obj_bsssec (output_bfd)) |
6c97aedf | 4155 | type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; |
4c3721d5 | 4156 | else |
6c97aedf ILT |
4157 | type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; |
4158 | type |= N_EXT; | |
4c3721d5 | 4159 | val = (h->root.u.def.value |
4f019d04 ILT |
4160 | + sec->vma |
4161 | + h->root.u.def.section->output_offset); | |
4c3721d5 ILT |
4162 | } |
4163 | break; | |
4164 | case bfd_link_hash_common: | |
4165 | type = N_UNDF | N_EXT; | |
4166 | val = h->root.u.c.size; | |
4167 | break; | |
6c97aedf | 4168 | case bfd_link_hash_undefweak: |
4298e311 ILT |
4169 | type = N_WEAKU; |
4170 | val = 0; | |
4c3721d5 ILT |
4171 | case bfd_link_hash_indirect: |
4172 | case bfd_link_hash_warning: | |
4173 | /* FIXME: Ignore these for now. The circumstances under which | |
4174 | they should be written out are not clear to me. */ | |
4175 | return true; | |
4176 | } | |
4177 | ||
4178 | bfd_h_put_8 (output_bfd, type, outsym.e_type); | |
4179 | bfd_h_put_8 (output_bfd, 0, outsym.e_other); | |
4180 | bfd_h_put_16 (output_bfd, 0, outsym.e_desc); | |
1afd2380 | 4181 | indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string, |
d17fc4c9 ILT |
4182 | false); |
4183 | if (indx == (bfd_size_type) -1) | |
4184 | { | |
4185 | /* FIXME: No way to handle errors. */ | |
4186 | abort (); | |
4187 | } | |
4188 | PUT_WORD (output_bfd, indx, outsym.e_strx); | |
4c3721d5 ILT |
4189 | PUT_WORD (output_bfd, val, outsym.e_value); |
4190 | ||
4191 | if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0 | |
4192 | || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE, | |
4193 | (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE) | |
4194 | { | |
4195 | /* FIXME: No way to handle errors. */ | |
4196 | abort (); | |
4197 | } | |
4198 | ||
4199 | finfo->symoff += EXTERNAL_NLIST_SIZE; | |
4200 | h->indx = obj_aout_external_sym_count (output_bfd); | |
4201 | ++obj_aout_external_sym_count (output_bfd); | |
4202 | ||
4203 | return true; | |
4204 | } | |
4205 | ||
4206 | /* Link an a.out section into the output file. */ | |
4207 | ||
4208 | static boolean | |
4209 | aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr, | |
1afd2380 | 4210 | rel_size) |
4c3721d5 ILT |
4211 | struct aout_final_link_info *finfo; |
4212 | bfd *input_bfd; | |
4213 | asection *input_section; | |
4214 | file_ptr *reloff_ptr; | |
4215 | bfd_size_type rel_size; | |
4c3721d5 ILT |
4216 | { |
4217 | bfd_size_type input_size; | |
e85e8bfe | 4218 | PTR relocs; |
4c3721d5 ILT |
4219 | |
4220 | /* Get the section contents. */ | |
4221 | input_size = bfd_section_size (input_bfd, input_section); | |
1afd2380 ILT |
4222 | if (! bfd_get_section_contents (input_bfd, input_section, |
4223 | (PTR) finfo->contents, | |
4c3721d5 | 4224 | (file_ptr) 0, input_size)) |
1afd2380 | 4225 | return false; |
4c3721d5 | 4226 | |
e85e8bfe ILT |
4227 | /* Read in the relocs if we haven't already done it. */ |
4228 | if (aout_section_data (input_section) != NULL | |
4229 | && aout_section_data (input_section)->relocs != NULL) | |
4230 | relocs = aout_section_data (input_section)->relocs; | |
4231 | else | |
80425e6c | 4232 | { |
1afd2380 | 4233 | relocs = finfo->relocs; |
875e4716 ILT |
4234 | if (rel_size > 0) |
4235 | { | |
4236 | if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 | |
4237 | || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size) | |
4238 | return false; | |
4239 | } | |
80425e6c | 4240 | } |
4c3721d5 ILT |
4241 | |
4242 | /* Relocate the section contents. */ | |
4243 | if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) | |
4244 | { | |
4245 | if (! aout_link_input_section_std (finfo, input_bfd, input_section, | |
4246 | (struct reloc_std_external *) relocs, | |
1afd2380 ILT |
4247 | rel_size, finfo->contents)) |
4248 | return false; | |
4c3721d5 ILT |
4249 | } |
4250 | else | |
4251 | { | |
4252 | if (! aout_link_input_section_ext (finfo, input_bfd, input_section, | |
4253 | (struct reloc_ext_external *) relocs, | |
1afd2380 ILT |
4254 | rel_size, finfo->contents)) |
4255 | return false; | |
4c3721d5 ILT |
4256 | } |
4257 | ||
4258 | /* Write out the section contents. */ | |
4259 | if (! bfd_set_section_contents (finfo->output_bfd, | |
4260 | input_section->output_section, | |
1afd2380 | 4261 | (PTR) finfo->contents, |
728472f1 | 4262 | input_section->output_offset, |
4c3721d5 | 4263 | input_size)) |
1afd2380 | 4264 | return false; |
4c3721d5 ILT |
4265 | |
4266 | /* If we are producing relocateable output, the relocs were | |
4267 | modified, and we now write them out. */ | |
875e4716 | 4268 | if (finfo->info->relocateable && rel_size > 0) |
4c3721d5 ILT |
4269 | { |
4270 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) | |
1afd2380 | 4271 | return false; |
4c3721d5 ILT |
4272 | if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd) |
4273 | != rel_size) | |
1afd2380 | 4274 | return false; |
4c3721d5 ILT |
4275 | *reloff_ptr += rel_size; |
4276 | ||
4277 | /* Assert that the relocs have not run into the symbols, and | |
4278 | that if these are the text relocs they have not run into the | |
4279 | data relocs. */ | |
4280 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
4281 | && (reloff_ptr != &finfo->treloff | |
4282 | || (*reloff_ptr | |
4283 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
4284 | } | |
4285 | ||
4286 | return true; | |
4287 | } | |
4288 | ||
4289 | /* Get the section corresponding to a reloc index. */ | |
4290 | ||
4291 | static INLINE asection * | |
4292 | aout_reloc_index_to_section (abfd, indx) | |
4293 | bfd *abfd; | |
4294 | int indx; | |
4295 | { | |
4296 | switch (indx & N_TYPE) | |
4297 | { | |
4298 | case N_TEXT: | |
4299 | return obj_textsec (abfd); | |
4300 | case N_DATA: | |
4301 | return obj_datasec (abfd); | |
4302 | case N_BSS: | |
4303 | return obj_bsssec (abfd); | |
4304 | case N_ABS: | |
fa2302b8 | 4305 | case N_UNDF: |
4587b578 | 4306 | return bfd_abs_section_ptr; |
4c3721d5 ILT |
4307 | default: |
4308 | abort (); | |
4309 | } | |
4310 | } | |
4311 | ||
4312 | /* Relocate an a.out section using standard a.out relocs. */ | |
4313 | ||
4314 | static boolean | |
4315 | aout_link_input_section_std (finfo, input_bfd, input_section, relocs, | |
1afd2380 | 4316 | rel_size, contents) |
4c3721d5 ILT |
4317 | struct aout_final_link_info *finfo; |
4318 | bfd *input_bfd; | |
4319 | asection *input_section; | |
4320 | struct reloc_std_external *relocs; | |
4321 | bfd_size_type rel_size; | |
4322 | bfd_byte *contents; | |
4c3721d5 | 4323 | { |
e85e8bfe ILT |
4324 | boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *, |
4325 | bfd *, asection *, | |
4326 | struct aout_link_hash_entry *, | |
4327 | PTR, boolean *)); | |
4c3721d5 ILT |
4328 | bfd *output_bfd; |
4329 | boolean relocateable; | |
4330 | struct external_nlist *syms; | |
4331 | char *strings; | |
4332 | struct aout_link_hash_entry **sym_hashes; | |
1afd2380 | 4333 | int *symbol_map; |
4c3721d5 ILT |
4334 | bfd_size_type reloc_count; |
4335 | register struct reloc_std_external *rel; | |
4336 | struct reloc_std_external *rel_end; | |
4337 | ||
4338 | output_bfd = finfo->output_bfd; | |
e85e8bfe | 4339 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
4c3721d5 ILT |
4340 | |
4341 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE); | |
4342 | BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p | |
4343 | == output_bfd->xvec->header_byteorder_big_p); | |
4344 | ||
4345 | relocateable = finfo->info->relocateable; | |
4346 | syms = obj_aout_external_syms (input_bfd); | |
4347 | strings = obj_aout_external_strings (input_bfd); | |
4348 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
1afd2380 | 4349 | symbol_map = finfo->symbol_map; |
4c3721d5 ILT |
4350 | |
4351 | reloc_count = rel_size / RELOC_STD_SIZE; | |
4352 | rel = relocs; | |
4353 | rel_end = rel + reloc_count; | |
4354 | for (; rel < rel_end; rel++) | |
4355 | { | |
4356 | bfd_vma r_addr; | |
4357 | int r_index; | |
4358 | int r_extern; | |
4359 | int r_pcrel; | |
4360 | int r_baserel; | |
4361 | int r_jmptable; | |
4362 | int r_relative; | |
4363 | int r_length; | |
4364 | int howto_idx; | |
f42fe159 | 4365 | reloc_howto_type *howto; |
4c3721d5 ILT |
4366 | bfd_vma relocation; |
4367 | bfd_reloc_status_type r; | |
4368 | ||
4369 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
4370 | ||
f42fe159 ILT |
4371 | #ifdef MY_reloc_howto |
4372 | howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel); | |
4373 | #else | |
4c3721d5 ILT |
4374 | if (input_bfd->xvec->header_byteorder_big_p) |
4375 | { | |
4376 | r_index = ((rel->r_index[0] << 16) | |
4377 | | (rel->r_index[1] << 8) | |
4378 | | rel->r_index[2]); | |
4379 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); | |
4380 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); | |
4381 | r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); | |
4382 | r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); | |
4383 | r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); | |
4384 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) | |
4385 | >> RELOC_STD_BITS_LENGTH_SH_BIG); | |
4386 | } | |
4387 | else | |
4388 | { | |
4389 | r_index = ((rel->r_index[2] << 16) | |
4390 | | (rel->r_index[1] << 8) | |
4391 | | rel->r_index[0]); | |
4392 | r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); | |
4393 | r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); | |
4394 | r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); | |
4395 | r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); | |
4396 | r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); | |
4397 | r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) | |
4398 | >> RELOC_STD_BITS_LENGTH_SH_LITTLE); | |
4399 | } | |
4400 | ||
cb9461ff JK |
4401 | howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel |
4402 | + 16 * r_jmptable + 32 * r_relative; | |
4c3721d5 | 4403 | BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std)); |
f42fe159 ILT |
4404 | howto = howto_table_std + howto_idx; |
4405 | #endif | |
4c3721d5 ILT |
4406 | |
4407 | if (relocateable) | |
4408 | { | |
4409 | /* We are generating a relocateable output file, and must | |
4410 | modify the reloc accordingly. */ | |
4411 | if (r_extern) | |
4412 | { | |
4413 | struct aout_link_hash_entry *h; | |
4414 | ||
4415 | /* If we know the symbol this relocation is against, | |
4416 | convert it into a relocation against a section. This | |
4417 | is what the native linker does. */ | |
4418 | h = sym_hashes[r_index]; | |
4419 | if (h != (struct aout_link_hash_entry *) NULL | |
6c97aedf ILT |
4420 | && (h->root.type == bfd_link_hash_defined |
4421 | || h->root.type == bfd_link_hash_defweak)) | |
4c3721d5 ILT |
4422 | { |
4423 | asection *output_section; | |
4424 | ||
4425 | /* Change the r_extern value. */ | |
4426 | if (output_bfd->xvec->header_byteorder_big_p) | |
4427 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG; | |
4428 | else | |
4429 | rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE; | |
4430 | ||
4431 | /* Compute a new r_index. */ | |
4432 | output_section = h->root.u.def.section->output_section; | |
4433 | if (output_section == obj_textsec (output_bfd)) | |
4434 | r_index = N_TEXT; | |
4435 | else if (output_section == obj_datasec (output_bfd)) | |
4436 | r_index = N_DATA; | |
4437 | else if (output_section == obj_bsssec (output_bfd)) | |
4438 | r_index = N_BSS; | |
4439 | else | |
4440 | r_index = N_ABS; | |
4441 | ||
4442 | /* Add the symbol value and the section VMA to the | |
4443 | addend stored in the contents. */ | |
4444 | relocation = (h->root.u.def.value | |
4445 | + output_section->vma | |
4446 | + h->root.u.def.section->output_offset); | |
4447 | } | |
4448 | else | |
4449 | { | |
4450 | /* We must change r_index according to the symbol | |
4451 | map. */ | |
4452 | r_index = symbol_map[r_index]; | |
4453 | ||
4454 | if (r_index == -1) | |
4455 | { | |
74942465 ILT |
4456 | if (h != NULL) |
4457 | { | |
4458 | /* We decided to strip this symbol, but it | |
4459 | turns out that we can't. Note that we | |
4460 | lose the other and desc information here. | |
4461 | I don't think that will ever matter for a | |
4462 | global symbol. */ | |
4463 | if (h->indx < 0) | |
4464 | { | |
4465 | h->indx = -2; | |
4466 | h->written = false; | |
4467 | if (! aout_link_write_other_symbol (h, | |
4468 | (PTR) finfo)) | |
4469 | return false; | |
4470 | } | |
4471 | r_index = h->indx; | |
4472 | } | |
4473 | else | |
4474 | { | |
4475 | const char *name; | |
4476 | ||
4477 | name = strings + GET_WORD (input_bfd, | |
4478 | syms[r_index].e_strx); | |
4479 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
4480 | (finfo->info, name, input_bfd, input_section, | |
4481 | r_addr))) | |
4482 | return false; | |
4483 | r_index = 0; | |
4484 | } | |
4c3721d5 ILT |
4485 | } |
4486 | ||
4487 | relocation = 0; | |
4488 | } | |
4489 | ||
4490 | /* Write out the new r_index value. */ | |
4491 | if (output_bfd->xvec->header_byteorder_big_p) | |
4492 | { | |
4493 | rel->r_index[0] = r_index >> 16; | |
4494 | rel->r_index[1] = r_index >> 8; | |
4495 | rel->r_index[2] = r_index; | |
4496 | } | |
4497 | else | |
4498 | { | |
4499 | rel->r_index[2] = r_index >> 16; | |
4500 | rel->r_index[1] = r_index >> 8; | |
4501 | rel->r_index[0] = r_index; | |
4502 | } | |
4503 | } | |
4504 | else | |
4505 | { | |
4506 | asection *section; | |
4507 | ||
4508 | /* This is a relocation against a section. We must | |
4509 | adjust by the amount that the section moved. */ | |
4510 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4511 | relocation = (section->output_section->vma | |
4512 | + section->output_offset | |
4513 | - section->vma); | |
4514 | } | |
4515 | ||
4516 | /* Change the address of the relocation. */ | |
4517 | PUT_WORD (output_bfd, | |
4518 | r_addr + input_section->output_offset, | |
4519 | rel->r_address); | |
4520 | ||
4521 | /* Adjust a PC relative relocation by removing the reference | |
e68de5d5 ILT |
4522 | to the original address in the section and including the |
4523 | reference to the new address. */ | |
4c3721d5 | 4524 | if (r_pcrel) |
e68de5d5 ILT |
4525 | relocation -= (input_section->output_section->vma |
4526 | + input_section->output_offset | |
4527 | - input_section->vma); | |
4c3721d5 | 4528 | |
943fbd5b KR |
4529 | #ifdef MY_relocatable_reloc |
4530 | MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); | |
4531 | #endif | |
4532 | ||
4c3721d5 ILT |
4533 | if (relocation == 0) |
4534 | r = bfd_reloc_ok; | |
4535 | else | |
f42fe159 | 4536 | r = _bfd_relocate_contents (howto, |
4c3721d5 ILT |
4537 | input_bfd, relocation, |
4538 | contents + r_addr); | |
4539 | } | |
4540 | else | |
4541 | { | |
4542 | /* We are generating an executable, and must do a full | |
4543 | relocation. */ | |
4544 | if (r_extern) | |
4545 | { | |
4546 | struct aout_link_hash_entry *h; | |
4547 | ||
4548 | h = sym_hashes[r_index]; | |
e85e8bfe ILT |
4549 | |
4550 | if (check_dynamic_reloc != NULL) | |
4551 | { | |
4552 | boolean skip; | |
4553 | ||
4554 | if (! ((*check_dynamic_reloc) | |
4555 | (finfo->info, input_bfd, input_section, h, | |
4556 | (PTR) rel, &skip))) | |
4557 | return false; | |
4558 | if (skip) | |
4559 | continue; | |
4560 | } | |
4561 | ||
4c3721d5 | 4562 | if (h != (struct aout_link_hash_entry *) NULL |
6c97aedf ILT |
4563 | && (h->root.type == bfd_link_hash_defined |
4564 | || h->root.type == bfd_link_hash_defweak)) | |
4c3721d5 ILT |
4565 | { |
4566 | relocation = (h->root.u.def.value | |
4567 | + h->root.u.def.section->output_section->vma | |
4568 | + h->root.u.def.section->output_offset); | |
4569 | } | |
4298e311 | 4570 | else if (h != (struct aout_link_hash_entry *) NULL |
6c97aedf | 4571 | && h->root.type == bfd_link_hash_undefweak) |
4298e311 | 4572 | relocation = 0; |
4c3721d5 ILT |
4573 | else |
4574 | { | |
4575 | const char *name; | |
4576 | ||
4577 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
4578 | if (! ((*finfo->info->callbacks->undefined_symbol) | |
4579 | (finfo->info, name, input_bfd, input_section, | |
4580 | r_addr))) | |
4581 | return false; | |
4582 | relocation = 0; | |
4583 | } | |
4584 | } | |
4585 | else | |
4586 | { | |
4587 | asection *section; | |
4588 | ||
4589 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4590 | relocation = (section->output_section->vma | |
4591 | + section->output_offset | |
4592 | - section->vma); | |
e68de5d5 ILT |
4593 | if (r_pcrel) |
4594 | relocation += input_section->vma; | |
4c3721d5 ILT |
4595 | } |
4596 | ||
f42fe159 | 4597 | r = _bfd_final_link_relocate (howto, |
4c3721d5 ILT |
4598 | input_bfd, input_section, |
4599 | contents, r_addr, relocation, | |
4600 | (bfd_vma) 0); | |
4601 | } | |
4602 | ||
4603 | if (r != bfd_reloc_ok) | |
4604 | { | |
4605 | switch (r) | |
4606 | { | |
4607 | default: | |
4608 | case bfd_reloc_outofrange: | |
4609 | abort (); | |
4610 | case bfd_reloc_overflow: | |
4991ebb9 ILT |
4611 | { |
4612 | const char *name; | |
4613 | ||
4614 | if (r_extern) | |
4615 | name = strings + GET_WORD (input_bfd, | |
4616 | syms[r_index].e_strx); | |
4617 | else | |
4618 | { | |
4619 | asection *s; | |
4620 | ||
4621 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
4622 | name = bfd_section_name (input_bfd, s); | |
4623 | } | |
4624 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
f42fe159 | 4625 | (finfo->info, name, howto->name, |
4991ebb9 ILT |
4626 | (bfd_vma) 0, input_bfd, input_section, r_addr))) |
4627 | return false; | |
4628 | } | |
4c3721d5 ILT |
4629 | break; |
4630 | } | |
4631 | } | |
4632 | } | |
4633 | ||
4634 | return true; | |
4635 | } | |
4636 | ||
4637 | /* Relocate an a.out section using extended a.out relocs. */ | |
4638 | ||
4639 | static boolean | |
4640 | aout_link_input_section_ext (finfo, input_bfd, input_section, relocs, | |
1afd2380 | 4641 | rel_size, contents) |
4c3721d5 ILT |
4642 | struct aout_final_link_info *finfo; |
4643 | bfd *input_bfd; | |
4644 | asection *input_section; | |
4645 | struct reloc_ext_external *relocs; | |
4646 | bfd_size_type rel_size; | |
4647 | bfd_byte *contents; | |
4c3721d5 | 4648 | { |
e85e8bfe ILT |
4649 | boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *, |
4650 | bfd *, asection *, | |
4651 | struct aout_link_hash_entry *, | |
4652 | PTR, boolean *)); | |
4c3721d5 ILT |
4653 | bfd *output_bfd; |
4654 | boolean relocateable; | |
4655 | struct external_nlist *syms; | |
4656 | char *strings; | |
4657 | struct aout_link_hash_entry **sym_hashes; | |
1afd2380 | 4658 | int *symbol_map; |
4c3721d5 ILT |
4659 | bfd_size_type reloc_count; |
4660 | register struct reloc_ext_external *rel; | |
4661 | struct reloc_ext_external *rel_end; | |
4662 | ||
4663 | output_bfd = finfo->output_bfd; | |
e85e8bfe | 4664 | check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; |
4c3721d5 ILT |
4665 | |
4666 | BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE); | |
4667 | BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p | |
4668 | == output_bfd->xvec->header_byteorder_big_p); | |
4669 | ||
4670 | relocateable = finfo->info->relocateable; | |
4671 | syms = obj_aout_external_syms (input_bfd); | |
4672 | strings = obj_aout_external_strings (input_bfd); | |
4673 | sym_hashes = obj_aout_sym_hashes (input_bfd); | |
1afd2380 | 4674 | symbol_map = finfo->symbol_map; |
4c3721d5 ILT |
4675 | |
4676 | reloc_count = rel_size / RELOC_EXT_SIZE; | |
4677 | rel = relocs; | |
4678 | rel_end = rel + reloc_count; | |
4679 | for (; rel < rel_end; rel++) | |
4680 | { | |
4681 | bfd_vma r_addr; | |
4682 | int r_index; | |
4683 | int r_extern; | |
4684 | int r_type; | |
4685 | bfd_vma r_addend; | |
4686 | bfd_vma relocation; | |
4687 | ||
4688 | r_addr = GET_SWORD (input_bfd, rel->r_address); | |
4689 | ||
4690 | if (input_bfd->xvec->header_byteorder_big_p) | |
4691 | { | |
4692 | r_index = ((rel->r_index[0] << 16) | |
4693 | | (rel->r_index[1] << 8) | |
4694 | | rel->r_index[2]); | |
4695 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); | |
4696 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) | |
4697 | >> RELOC_EXT_BITS_TYPE_SH_BIG); | |
4698 | } | |
4699 | else | |
4700 | { | |
4701 | r_index = ((rel->r_index[2] << 16) | |
4702 | | (rel->r_index[1] << 8) | |
4703 | | rel->r_index[0]); | |
4704 | r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); | |
4705 | r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) | |
4706 | >> RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
4707 | } | |
4708 | ||
4709 | r_addend = GET_SWORD (input_bfd, rel->r_addend); | |
4710 | ||
e68de5d5 ILT |
4711 | BFD_ASSERT (r_type >= 0 |
4712 | && r_type < TABLE_SIZE (howto_table_ext)); | |
4713 | ||
4c3721d5 ILT |
4714 | if (relocateable) |
4715 | { | |
4716 | /* We are generating a relocateable output file, and must | |
4717 | modify the reloc accordingly. */ | |
4718 | if (r_extern) | |
4719 | { | |
4720 | struct aout_link_hash_entry *h; | |
4721 | ||
4722 | /* If we know the symbol this relocation is against, | |
4723 | convert it into a relocation against a section. This | |
4724 | is what the native linker does. */ | |
4725 | h = sym_hashes[r_index]; | |
4726 | if (h != (struct aout_link_hash_entry *) NULL | |
6c97aedf ILT |
4727 | && (h->root.type == bfd_link_hash_defined |
4728 | || h->root.type == bfd_link_hash_defweak)) | |
4c3721d5 ILT |
4729 | { |
4730 | asection *output_section; | |
4731 | ||
4732 | /* Change the r_extern value. */ | |
4733 | if (output_bfd->xvec->header_byteorder_big_p) | |
4734 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG; | |
4735 | else | |
4736 | rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE; | |
4737 | ||
4738 | /* Compute a new r_index. */ | |
4739 | output_section = h->root.u.def.section->output_section; | |
4740 | if (output_section == obj_textsec (output_bfd)) | |
4741 | r_index = N_TEXT; | |
4742 | else if (output_section == obj_datasec (output_bfd)) | |
4743 | r_index = N_DATA; | |
4744 | else if (output_section == obj_bsssec (output_bfd)) | |
4745 | r_index = N_BSS; | |
4746 | else | |
4747 | r_index = N_ABS; | |
4748 | ||
4749 | /* Add the symbol value and the section VMA to the | |
4750 | addend. */ | |
4751 | relocation = (h->root.u.def.value | |
4752 | + output_section->vma | |
4753 | + h->root.u.def.section->output_offset); | |
e68de5d5 ILT |
4754 | |
4755 | /* Now RELOCATION is the VMA of the final | |
4756 | destination. If this is a PC relative reloc, | |
4757 | then ADDEND is the negative of the source VMA. | |
4758 | We want to set ADDEND to the difference between | |
4759 | the destination VMA and the source VMA, which | |
4760 | means we must adjust RELOCATION by the change in | |
4761 | the source VMA. This is done below. */ | |
4c3721d5 ILT |
4762 | } |
4763 | else | |
4764 | { | |
4765 | /* We must change r_index according to the symbol | |
4766 | map. */ | |
4767 | r_index = symbol_map[r_index]; | |
4768 | ||
4769 | if (r_index == -1) | |
4770 | { | |
74942465 ILT |
4771 | if (h != NULL) |
4772 | { | |
4773 | /* We decided to strip this symbol, but it | |
4774 | turns out that we can't. Note that we | |
4775 | lose the other and desc information here. | |
4776 | I don't think that will ever matter for a | |
4777 | global symbol. */ | |
4778 | if (h->indx < 0) | |
4779 | { | |
4780 | h->indx = -2; | |
4781 | h->written = false; | |
4782 | if (! aout_link_write_other_symbol (h, | |
4783 | (PTR) finfo)) | |
4784 | return false; | |
4785 | } | |
4786 | r_index = h->indx; | |
4787 | } | |
4788 | else | |
4789 | { | |
4790 | const char *name; | |
4791 | ||
4792 | name = strings + GET_WORD (input_bfd, | |
4793 | syms[r_index].e_strx); | |
4794 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
4795 | (finfo->info, name, input_bfd, input_section, | |
4796 | r_addr))) | |
4797 | return false; | |
4798 | r_index = 0; | |
4799 | } | |
4c3721d5 ILT |
4800 | } |
4801 | ||
4802 | relocation = 0; | |
e68de5d5 ILT |
4803 | |
4804 | /* If this is a PC relative reloc, then the addend | |
4805 | is the negative of the source VMA. We must | |
4806 | adjust it by the change in the source VMA. This | |
4807 | is done below. */ | |
4c3721d5 ILT |
4808 | } |
4809 | ||
4810 | /* Write out the new r_index value. */ | |
4811 | if (output_bfd->xvec->header_byteorder_big_p) | |
4812 | { | |
4813 | rel->r_index[0] = r_index >> 16; | |
4814 | rel->r_index[1] = r_index >> 8; | |
4815 | rel->r_index[2] = r_index; | |
4816 | } | |
4817 | else | |
4818 | { | |
4819 | rel->r_index[2] = r_index >> 16; | |
4820 | rel->r_index[1] = r_index >> 8; | |
4821 | rel->r_index[0] = r_index; | |
4822 | } | |
4823 | } | |
4824 | else | |
4825 | { | |
4826 | asection *section; | |
4827 | ||
4828 | /* This is a relocation against a section. We must | |
4829 | adjust by the amount that the section moved. */ | |
4830 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
4831 | relocation = (section->output_section->vma | |
4832 | + section->output_offset | |
4833 | - section->vma); | |
4c3721d5 | 4834 | |
e68de5d5 ILT |
4835 | /* If this is a PC relative reloc, then the addend is |
4836 | the difference in VMA between the destination and the | |
4837 | source. We have just adjusted for the change in VMA | |
4838 | of the destination, so we must also adjust by the | |
4839 | change in VMA of the source. This is done below. */ | |
4c3721d5 ILT |
4840 | } |
4841 | ||
e68de5d5 ILT |
4842 | /* As described above, we must always adjust a PC relative |
4843 | reloc by the change in VMA of the source. */ | |
4844 | if (howto_table_ext[r_type].pc_relative) | |
4845 | relocation -= (input_section->output_section->vma | |
4846 | + input_section->output_offset | |
4847 | - input_section->vma); | |
4848 | ||
4c3721d5 ILT |
4849 | /* Change the addend if necessary. */ |
4850 | if (relocation != 0) | |
4851 | PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend); | |
4852 | ||
4853 | /* Change the address of the relocation. */ | |
4854 | PUT_WORD (output_bfd, | |
4855 | r_addr + input_section->output_offset, | |
4856 | rel->r_address); | |
4857 | } | |
4858 | else | |
4859 | { | |
4860 | bfd_reloc_status_type r; | |
4861 | ||
4862 | /* We are generating an executable, and must do a full | |
4863 | relocation. */ | |
4864 | if (r_extern) | |
4865 | { | |
4866 | struct aout_link_hash_entry *h; | |
4867 | ||
4868 | h = sym_hashes[r_index]; | |
e85e8bfe ILT |
4869 | |
4870 | if (check_dynamic_reloc != NULL) | |
4871 | { | |
4872 | boolean skip; | |
4873 | ||
4874 | if (! ((*check_dynamic_reloc) | |
4875 | (finfo->info, input_bfd, input_section, h, | |
4876 | (PTR) rel, &skip))) | |
4877 | return false; | |
4878 | if (skip) | |
4879 | continue; | |
4880 | } | |
4881 | ||
4c3721d5 | 4882 | if (h != (struct aout_link_hash_entry *) NULL |
6c97aedf ILT |
4883 | && (h->root.type == bfd_link_hash_defined |
4884 | || h->root.type == bfd_link_hash_defweak)) | |
4c3721d5 ILT |
4885 | { |
4886 | relocation = (h->root.u.def.value | |
4887 | + h->root.u.def.section->output_section->vma | |
4888 | + h->root.u.def.section->output_offset); | |
4889 | } | |
4298e311 | 4890 | else if (h != (struct aout_link_hash_entry *) NULL |
6c97aedf | 4891 | && h->root.type == bfd_link_hash_undefweak) |
4298e311 | 4892 | relocation = 0; |
4c3721d5 ILT |
4893 | else |
4894 | { | |
4895 | const char *name; | |
4896 | ||
4897 | name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); | |
4898 | if (! ((*finfo->info->callbacks->undefined_symbol) | |
4899 | (finfo->info, name, input_bfd, input_section, | |
4900 | r_addr))) | |
4901 | return false; | |
4902 | relocation = 0; | |
4903 | } | |
4904 | } | |
4905 | else | |
4906 | { | |
4907 | asection *section; | |
4908 | ||
4909 | section = aout_reloc_index_to_section (input_bfd, r_index); | |
e68de5d5 ILT |
4910 | |
4911 | /* If this is a PC relative reloc, then R_ADDEND is the | |
4912 | difference between the two vmas, or | |
4913 | old_dest_sec + old_dest_off - (old_src_sec + old_src_off) | |
4914 | where | |
4915 | old_dest_sec == section->vma | |
4916 | and | |
4917 | old_src_sec == input_section->vma | |
4918 | and | |
4919 | old_src_off == r_addr | |
4920 | ||
4921 | _bfd_final_link_relocate expects RELOCATION + | |
4922 | R_ADDEND to be the VMA of the destination minus | |
4923 | r_addr (the minus r_addr is because this relocation | |
4924 | is not pcrel_offset, which is a bit confusing and | |
4925 | should, perhaps, be changed), or | |
4926 | new_dest_sec | |
4927 | where | |
4928 | new_dest_sec == output_section->vma + output_offset | |
4929 | We arrange for this to happen by setting RELOCATION to | |
4930 | new_dest_sec + old_src_sec - old_dest_sec | |
4931 | ||
4932 | If this is not a PC relative reloc, then R_ADDEND is | |
4933 | simply the VMA of the destination, so we set | |
4934 | RELOCATION to the change in the destination VMA, or | |
4935 | new_dest_sec - old_dest_sec | |
4936 | */ | |
4c3721d5 ILT |
4937 | relocation = (section->output_section->vma |
4938 | + section->output_offset | |
4939 | - section->vma); | |
e68de5d5 ILT |
4940 | if (howto_table_ext[r_type].pc_relative) |
4941 | relocation += input_section->vma; | |
4c3721d5 ILT |
4942 | } |
4943 | ||
4c3721d5 ILT |
4944 | r = _bfd_final_link_relocate (howto_table_ext + r_type, |
4945 | input_bfd, input_section, | |
4946 | contents, r_addr, relocation, | |
4947 | r_addend); | |
4948 | if (r != bfd_reloc_ok) | |
4949 | { | |
4950 | switch (r) | |
4951 | { | |
4952 | default: | |
4953 | case bfd_reloc_outofrange: | |
4954 | abort (); | |
4955 | case bfd_reloc_overflow: | |
4991ebb9 ILT |
4956 | { |
4957 | const char *name; | |
4958 | ||
4959 | if (r_extern) | |
4960 | name = strings + GET_WORD (input_bfd, | |
4961 | syms[r_index].e_strx); | |
4962 | else | |
4963 | { | |
4964 | asection *s; | |
4965 | ||
4966 | s = aout_reloc_index_to_section (input_bfd, r_index); | |
4967 | name = bfd_section_name (input_bfd, s); | |
4968 | } | |
4969 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
4970 | (finfo->info, name, howto_table_ext[r_type].name, | |
4971 | r_addend, input_bfd, input_section, r_addr))) | |
4972 | return false; | |
4973 | } | |
4c3721d5 ILT |
4974 | break; |
4975 | } | |
4976 | } | |
4977 | } | |
4978 | } | |
4979 | ||
4980 | return true; | |
4981 | } | |
ec099b4b ILT |
4982 | |
4983 | /* Handle a link order which is supposed to generate a reloc. */ | |
4984 | ||
4985 | static boolean | |
4986 | aout_link_reloc_link_order (finfo, o, p) | |
4987 | struct aout_final_link_info *finfo; | |
4988 | asection *o; | |
4989 | struct bfd_link_order *p; | |
4990 | { | |
4991 | struct bfd_link_order_reloc *pr; | |
4992 | int r_index; | |
4993 | int r_extern; | |
82b1edf7 | 4994 | reloc_howto_type *howto; |
ec099b4b ILT |
4995 | file_ptr *reloff_ptr; |
4996 | struct reloc_std_external srel; | |
4997 | struct reloc_ext_external erel; | |
4998 | PTR rel_ptr; | |
4999 | ||
5000 | pr = p->u.reloc.p; | |
5001 | ||
5002 | if (p->type == bfd_section_reloc_link_order) | |
5003 | { | |
5004 | r_extern = 0; | |
4587b578 | 5005 | if (bfd_is_abs_section (pr->u.section)) |
ec099b4b ILT |
5006 | r_index = N_ABS | N_EXT; |
5007 | else | |
5008 | { | |
5009 | BFD_ASSERT (pr->u.section->owner == finfo->output_bfd); | |
5010 | r_index = pr->u.section->target_index; | |
5011 | } | |
5012 | } | |
5013 | else | |
5014 | { | |
5015 | struct aout_link_hash_entry *h; | |
5016 | ||
5017 | BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); | |
5018 | r_extern = 1; | |
5019 | h = aout_link_hash_lookup (aout_hash_table (finfo->info), | |
5020 | pr->u.name, false, false, true); | |
5021 | if (h != (struct aout_link_hash_entry *) NULL | |
74942465 | 5022 | && h->indx >= 0) |
ec099b4b | 5023 | r_index = h->indx; |
74942465 ILT |
5024 | else if (h != NULL) |
5025 | { | |
5026 | /* We decided to strip this symbol, but it turns out that we | |
5027 | can't. Note that we lose the other and desc information | |
5028 | here. I don't think that will ever matter for a global | |
5029 | symbol. */ | |
5030 | h->indx = -2; | |
5031 | h->written = false; | |
5032 | if (! aout_link_write_other_symbol (h, (PTR) finfo)) | |
5033 | return false; | |
5034 | r_index = h->indx; | |
5035 | } | |
ec099b4b ILT |
5036 | else |
5037 | { | |
5038 | if (! ((*finfo->info->callbacks->unattached_reloc) | |
5039 | (finfo->info, pr->u.name, (bfd *) NULL, | |
5040 | (asection *) NULL, (bfd_vma) 0))) | |
5041 | return false; | |
5042 | r_index = 0; | |
5043 | } | |
5044 | } | |
5045 | ||
5046 | howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc); | |
82b1edf7 | 5047 | if (howto == 0) |
ec099b4b ILT |
5048 | { |
5049 | bfd_set_error (bfd_error_bad_value); | |
5050 | return false; | |
5051 | } | |
5052 | ||
5053 | if (o == obj_textsec (finfo->output_bfd)) | |
5054 | reloff_ptr = &finfo->treloff; | |
5055 | else if (o == obj_datasec (finfo->output_bfd)) | |
5056 | reloff_ptr = &finfo->dreloff; | |
5057 | else | |
5058 | abort (); | |
5059 | ||
5060 | if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE) | |
5061 | { | |
5062 | int r_pcrel; | |
5063 | int r_baserel; | |
5064 | int r_jmptable; | |
5065 | int r_relative; | |
5066 | int r_length; | |
5067 | ||
f42fe159 ILT |
5068 | #ifdef MY_put_reloc |
5069 | MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto, &srel); | |
5070 | #else | |
ec099b4b ILT |
5071 | r_pcrel = howto->pc_relative; |
5072 | r_baserel = (howto->type & 8) != 0; | |
cb9461ff JK |
5073 | r_jmptable = (howto->type & 16) != 0; |
5074 | r_relative = (howto->type & 32) != 0; | |
ec099b4b ILT |
5075 | r_length = howto->size; |
5076 | ||
5077 | PUT_WORD (finfo->output_bfd, p->offset, srel.r_address); | |
5078 | if (finfo->output_bfd->xvec->header_byteorder_big_p) | |
5079 | { | |
5080 | srel.r_index[0] = r_index >> 16; | |
5081 | srel.r_index[1] = r_index >> 8; | |
5082 | srel.r_index[2] = r_index; | |
5083 | srel.r_type[0] = | |
5084 | ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) | |
5085 | | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) | |
5086 | | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) | |
5087 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) | |
5088 | | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) | |
5089 | | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); | |
5090 | } | |
5091 | else | |
5092 | { | |
5093 | srel.r_index[2] = r_index >> 16; | |
5094 | srel.r_index[1] = r_index >> 8; | |
5095 | srel.r_index[0] = r_index; | |
5096 | srel.r_type[0] = | |
5097 | ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) | |
5098 | | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) | |
5099 | | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) | |
5100 | | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) | |
5101 | | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) | |
5102 | | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); | |
5103 | } | |
f42fe159 | 5104 | #endif |
ec099b4b ILT |
5105 | rel_ptr = (PTR) &srel; |
5106 | ||
5107 | /* We have to write the addend into the object file, since | |
5108 | standard a.out relocs are in place. It would be more | |
5109 | reliable if we had the current contents of the file here, | |
5110 | rather than assuming zeroes, but we can't read the file since | |
5111 | it was opened using bfd_openw. */ | |
5112 | if (pr->addend != 0) | |
5113 | { | |
5114 | bfd_size_type size; | |
5115 | bfd_reloc_status_type r; | |
5116 | bfd_byte *buf; | |
5117 | boolean ok; | |
5118 | ||
5119 | size = bfd_get_reloc_size (howto); | |
e85e8bfe | 5120 | buf = (bfd_byte *) bfd_zmalloc (size); |
ec099b4b ILT |
5121 | if (buf == (bfd_byte *) NULL) |
5122 | { | |
5123 | bfd_set_error (bfd_error_no_memory); | |
5124 | return false; | |
5125 | } | |
5126 | r = _bfd_relocate_contents (howto, finfo->output_bfd, | |
5127 | pr->addend, buf); | |
5128 | switch (r) | |
5129 | { | |
5130 | case bfd_reloc_ok: | |
5131 | break; | |
5132 | default: | |
5133 | case bfd_reloc_outofrange: | |
5134 | abort (); | |
5135 | case bfd_reloc_overflow: | |
5136 | if (! ((*finfo->info->callbacks->reloc_overflow) | |
5137 | (finfo->info, | |
5138 | (p->type == bfd_section_reloc_link_order | |
5139 | ? bfd_section_name (finfo->output_bfd, | |
5140 | pr->u.section) | |
5141 | : pr->u.name), | |
5142 | howto->name, pr->addend, (bfd *) NULL, | |
5143 | (asection *) NULL, (bfd_vma) 0))) | |
5144 | { | |
5145 | free (buf); | |
5146 | return false; | |
5147 | } | |
5148 | break; | |
5149 | } | |
5150 | ok = bfd_set_section_contents (finfo->output_bfd, o, | |
5151 | (PTR) buf, | |
5152 | (file_ptr) p->offset, | |
5153 | size); | |
5154 | free (buf); | |
5155 | if (! ok) | |
5156 | return false; | |
5157 | } | |
5158 | } | |
5159 | else | |
5160 | { | |
5161 | PUT_WORD (finfo->output_bfd, p->offset, erel.r_address); | |
5162 | ||
5163 | if (finfo->output_bfd->xvec->header_byteorder_big_p) | |
5164 | { | |
5165 | erel.r_index[0] = r_index >> 16; | |
5166 | erel.r_index[1] = r_index >> 8; | |
5167 | erel.r_index[2] = r_index; | |
5168 | erel.r_type[0] = | |
5169 | ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) | |
5170 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG)); | |
5171 | } | |
5172 | else | |
5173 | { | |
5174 | erel.r_index[2] = r_index >> 16; | |
5175 | erel.r_index[1] = r_index >> 8; | |
5176 | erel.r_index[0] = r_index; | |
5177 | erel.r_type[0] = | |
5178 | (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) | |
5179 | | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE); | |
5180 | } | |
5181 | ||
5182 | PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend); | |
5183 | ||
5184 | rel_ptr = (PTR) &erel; | |
5185 | } | |
5186 | ||
5187 | if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 | |
5188 | || (bfd_write (rel_ptr, (bfd_size_type) 1, | |
5189 | obj_reloc_entry_size (finfo->output_bfd), | |
5190 | finfo->output_bfd) | |
5191 | != obj_reloc_entry_size (finfo->output_bfd))) | |
5192 | return false; | |
5193 | ||
5194 | *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd); | |
5195 | ||
5196 | /* Assert that the relocs have not run into the symbols, and that n | |
5197 | the text relocs have not run into the data relocs. */ | |
5198 | BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) | |
5199 | && (reloff_ptr != &finfo->treloff | |
5200 | || (*reloff_ptr | |
5201 | <= obj_datasec (finfo->output_bfd)->rel_filepos))); | |
5202 | ||
5203 | return true; | |
5204 | } |