(message_dolog): Give correct args to
[bpt/emacs.git] / src / unexelf.c
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1/* Copyright (C) 1985, 1986, 1987, 1988, 1990, 1992
2 Free Software Foundation, Inc.
d427b66a 3
3b7ad313 4This file is part of GNU Emacs.
e40c4104 5
3b7ad313
EN
6GNU Emacs is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2, or (at your option)
9any later version.
e40c4104 10
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11GNU Emacs is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with GNU Emacs; see the file COPYING. If not, write to
18the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19Boston, MA 02111-1307, USA.
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20
21In other words, you are welcome to use, share and improve this program.
22You are forbidden to forbid anyone else to use, share and improve
23what you give them. Help stamp out software-hoarding! */
24
25
26/*
27 * unexec.c - Convert a running program into an a.out file.
28 *
29 * Author: Spencer W. Thomas
30 * Computer Science Dept.
31 * University of Utah
32 * Date: Tue Mar 2 1982
33 * Modified heavily since then.
34 *
35 * Synopsis:
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36 * unexec (new_name, old_name, data_start, bss_start, entry_address)
37 * char *new_name, *old_name;
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38 * unsigned data_start, bss_start, entry_address;
39 *
40 * Takes a snapshot of the program and makes an a.out format file in the
41 * file named by the string argument new_name.
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42 * If old_name is non-NULL, the symbol table will be taken from the given file.
43 * On some machines, an existing old_name file is required.
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44 *
45 * The boundaries within the a.out file may be adjusted with the data_start
46 * and bss_start arguments. Either or both may be given as 0 for defaults.
47 *
48 * Data_start gives the boundary between the text segment and the data
49 * segment of the program. The text segment can contain shared, read-only
50 * program code and literal data, while the data segment is always unshared
51 * and unprotected. Data_start gives the lowest unprotected address.
52 * The value you specify may be rounded down to a suitable boundary
53 * as required by the machine you are using.
54 *
55 * Specifying zero for data_start means the boundary between text and data
56 * should not be the same as when the program was loaded.
57 * If NO_REMAP is defined, the argument data_start is ignored and the
58 * segment boundaries are never changed.
59 *
60 * Bss_start indicates how much of the data segment is to be saved in the
61 * a.out file and restored when the program is executed. It gives the lowest
62 * unsaved address, and is rounded up to a page boundary. The default when 0
63 * is given assumes that the entire data segment is to be stored, including
64 * the previous data and bss as well as any additional storage allocated with
65 * break (2).
66 *
67 * The new file is set up to start at entry_address.
68 *
69 * If you make improvements I'd like to get them too.
70 * harpo!utah-cs!thomas, thomas@Utah-20
71 *
72 */
73
74/* Even more heavily modified by james@bigtex.cactus.org of Dell Computer Co.
75 * ELF support added.
76 *
77 * Basic theory: the data space of the running process needs to be
78 * dumped to the output file. Normally we would just enlarge the size
79 * of .data, scooting everything down. But we can't do that in ELF,
80 * because there is often something between the .data space and the
81 * .bss space.
82 *
83 * In the temacs dump below, notice that the Global Offset Table
84 * (.got) and the Dynamic link data (.dynamic) come between .data1 and
85 * .bss. It does not work to overlap .data with these fields.
86 *
87 * The solution is to create a new .data segment. This segment is
88 * filled with data from the current process. Since the contents of
89 * various sections refer to sections by index, the new .data segment
90 * is made the last in the table to avoid changing any existing index.
91
92 * This is an example of how the section headers are changed. "Addr"
93 * is a process virtual address. "Offset" is a file offset.
94
95raid:/nfs/raid/src/dist-18.56/src> dump -h temacs
96
97temacs:
98
99 **** SECTION HEADER TABLE ****
100[No] Type Flags Addr Offset Size Name
101 Link Info Adralgn Entsize
102
103[1] 1 2 0x80480d4 0xd4 0x13 .interp
994a65f3 104 0 0 0x1 0
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105
106[2] 5 2 0x80480e8 0xe8 0x388 .hash
994a65f3 107 3 0 0x4 0x4
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JB
108
109[3] 11 2 0x8048470 0x470 0x7f0 .dynsym
994a65f3 110 4 1 0x4 0x10
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JB
111
112[4] 3 2 0x8048c60 0xc60 0x3ad .dynstr
994a65f3 113 0 0 0x1 0
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JB
114
115[5] 9 2 0x8049010 0x1010 0x338 .rel.plt
994a65f3 116 3 7 0x4 0x8
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117
118[6] 1 6 0x8049348 0x1348 0x3 .init
994a65f3 119 0 0 0x4 0
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120
121[7] 1 6 0x804934c 0x134c 0x680 .plt
994a65f3 122 0 0 0x4 0x4
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123
124[8] 1 6 0x80499cc 0x19cc 0x3c56f .text
994a65f3 125 0 0 0x4 0
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126
127[9] 1 6 0x8085f3c 0x3df3c 0x3 .fini
994a65f3 128 0 0 0x4 0
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129
130[10] 1 2 0x8085f40 0x3df40 0x69c .rodata
994a65f3 131 0 0 0x4 0
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132
133[11] 1 2 0x80865dc 0x3e5dc 0xd51 .rodata1
994a65f3 134 0 0 0x4 0
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135
136[12] 1 3 0x8088330 0x3f330 0x20afc .data
994a65f3 137 0 0 0x4 0
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138
139[13] 1 3 0x80a8e2c 0x5fe2c 0x89d .data1
994a65f3 140 0 0 0x4 0
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141
142[14] 1 3 0x80a96cc 0x606cc 0x1a8 .got
994a65f3 143 0 0 0x4 0x4
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144
145[15] 6 3 0x80a9874 0x60874 0x80 .dynamic
994a65f3 146 4 0 0x4 0x8
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147
148[16] 8 3 0x80a98f4 0x608f4 0x449c .bss
994a65f3 149 0 0 0x4 0
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150
151[17] 2 0 0 0x608f4 0x9b90 .symtab
994a65f3 152 18 371 0x4 0x10
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153
154[18] 3 0 0 0x6a484 0x8526 .strtab
994a65f3 155 0 0 0x1 0
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156
157[19] 3 0 0 0x729aa 0x93 .shstrtab
994a65f3 158 0 0 0x1 0
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159
160[20] 1 0 0 0x72a3d 0x68b7 .comment
994a65f3 161 0 0 0x1 0
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162
163raid:/nfs/raid/src/dist-18.56/src> dump -h xemacs
164
165xemacs:
166
167 **** SECTION HEADER TABLE ****
168[No] Type Flags Addr Offset Size Name
169 Link Info Adralgn Entsize
170
171[1] 1 2 0x80480d4 0xd4 0x13 .interp
994a65f3 172 0 0 0x1 0
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173
174[2] 5 2 0x80480e8 0xe8 0x388 .hash
994a65f3 175 3 0 0x4 0x4
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176
177[3] 11 2 0x8048470 0x470 0x7f0 .dynsym
994a65f3 178 4 1 0x4 0x10
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179
180[4] 3 2 0x8048c60 0xc60 0x3ad .dynstr
994a65f3 181 0 0 0x1 0
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182
183[5] 9 2 0x8049010 0x1010 0x338 .rel.plt
994a65f3 184 3 7 0x4 0x8
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185
186[6] 1 6 0x8049348 0x1348 0x3 .init
994a65f3 187 0 0 0x4 0
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188
189[7] 1 6 0x804934c 0x134c 0x680 .plt
994a65f3 190 0 0 0x4 0x4
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191
192[8] 1 6 0x80499cc 0x19cc 0x3c56f .text
994a65f3 193 0 0 0x4 0
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194
195[9] 1 6 0x8085f3c 0x3df3c 0x3 .fini
994a65f3 196 0 0 0x4 0
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197
198[10] 1 2 0x8085f40 0x3df40 0x69c .rodata
994a65f3 199 0 0 0x4 0
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200
201[11] 1 2 0x80865dc 0x3e5dc 0xd51 .rodata1
994a65f3 202 0 0 0x4 0
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203
204[12] 1 3 0x8088330 0x3f330 0x20afc .data
994a65f3 205 0 0 0x4 0
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206
207[13] 1 3 0x80a8e2c 0x5fe2c 0x89d .data1
994a65f3 208 0 0 0x4 0
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209
210[14] 1 3 0x80a96cc 0x606cc 0x1a8 .got
994a65f3 211 0 0 0x4 0x4
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212
213[15] 6 3 0x80a9874 0x60874 0x80 .dynamic
994a65f3 214 4 0 0x4 0x8
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215
216[16] 8 3 0x80c6800 0x7d800 0 .bss
994a65f3 217 0 0 0x4 0
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218
219[17] 2 0 0 0x7d800 0x9b90 .symtab
994a65f3 220 18 371 0x4 0x10
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221
222[18] 3 0 0 0x87390 0x8526 .strtab
994a65f3 223 0 0 0x1 0
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224
225[19] 3 0 0 0x8f8b6 0x93 .shstrtab
994a65f3 226 0 0 0x1 0
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227
228[20] 1 0 0 0x8f949 0x68b7 .comment
994a65f3 229 0 0 0x1 0
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230
231[21] 1 3 0x80a98f4 0x608f4 0x1cf0c .data
994a65f3 232 0 0 0x4 0
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233
234 * This is an example of how the file header is changed. "Shoff" is
235 * the section header offset within the file. Since that table is
236 * after the new .data section, it is moved. "Shnum" is the number of
237 * sections, which we increment.
238 *
239 * "Phoff" is the file offset to the program header. "Phentsize" and
240 * "Shentsz" are the program and section header entries sizes respectively.
241 * These can be larger than the apparent struct sizes.
242
243raid:/nfs/raid/src/dist-18.56/src> dump -f temacs
244
245temacs:
246
247 **** ELF HEADER ****
248Class Data Type Machine Version
249Entry Phoff Shoff Flags Ehsize
250Phentsize Phnum Shentsz Shnum Shstrndx
251
2521 1 2 3 1
2530x80499cc 0x34 0x792f4 0 0x34
2540x20 5 0x28 21 19
255
256raid:/nfs/raid/src/dist-18.56/src> dump -f xemacs
257
258xemacs:
259
260 **** ELF HEADER ****
261Class Data Type Machine Version
262Entry Phoff Shoff Flags Ehsize
263Phentsize Phnum Shentsz Shnum Shstrndx
264
2651 1 2 3 1
2660x80499cc 0x34 0x96200 0 0x34
2670x20 5 0x28 22 19
268
269 * These are the program headers. "Offset" is the file offset to the
270 * segment. "Vaddr" is the memory load address. "Filesz" is the
271 * segment size as it appears in the file, and "Memsz" is the size in
272 * memory. Below, the third segment is the code and the fourth is the
273 * data: the difference between Filesz and Memsz is .bss
274
275raid:/nfs/raid/src/dist-18.56/src> dump -o temacs
276
277temacs:
278 ***** PROGRAM EXECUTION HEADER *****
279Type Offset Vaddr Paddr
280Filesz Memsz Flags Align
281
994a65f3
RM
2826 0x34 0x8048034 0
2830xa0 0xa0 5 0
d427b66a 284
994a65f3
RM
2853 0xd4 0 0
2860x13 0 4 0
d427b66a 287
994a65f3
RM
2881 0x34 0x8048034 0
2890x3f2f9 0x3f2f9 5 0x1000
d427b66a 290
994a65f3
RM
2911 0x3f330 0x8088330 0
2920x215c4 0x25a60 7 0x1000
d427b66a 293
994a65f3
RM
2942 0x60874 0x80a9874 0
2950x80 0 7 0
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296
297raid:/nfs/raid/src/dist-18.56/src> dump -o xemacs
298
299xemacs:
300 ***** PROGRAM EXECUTION HEADER *****
301Type Offset Vaddr Paddr
302Filesz Memsz Flags Align
303
994a65f3
RM
3046 0x34 0x8048034 0
3050xa0 0xa0 5 0
d427b66a 306
994a65f3
RM
3073 0xd4 0 0
3080x13 0 4 0
d427b66a 309
994a65f3
RM
3101 0x34 0x8048034 0
3110x3f2f9 0x3f2f9 5 0x1000
d427b66a 312
994a65f3
RM
3131 0x3f330 0x8088330 0
3140x3e4d0 0x3e4d0 7 0x1000
d427b66a 315
994a65f3
RM
3162 0x60874 0x80a9874 0
3170x80 0 7 0
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318
319
320 */
e40c4104 321\f
994a65f3
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322/* Modified by wtien@urbana.mcd.mot.com of Motorola Inc.
323 *
e40c4104 324 * The above mechanism does not work if the unexeced ELF file is being
994a65f3 325 * re-layout by other applications (such as `strip'). All the applications
e40c4104 326 * that re-layout the internal of ELF will layout all sections in ascending
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327 * order of their file offsets. After the re-layout, the data2 section will
328 * still be the LAST section in the section header vector, but its file offset
e40c4104 329 * is now being pushed far away down, and causes part of it not to be mapped
994a65f3 330 * in (ie. not covered by the load segment entry in PHDR vector), therefore
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331 * causes the new binary to fail.
332 *
333 * The solution is to modify the unexec algorithm to insert the new data2
334 * section header right before the new bss section header, so their file
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335 * offsets will be in the ascending order. Since some of the section's (all
336 * sections AFTER the bss section) indexes are now changed, we also need to
337 * modify some fields to make them point to the right sections. This is done
e40c4104 338 * by macro PATCH_INDEX. All the fields that need to be patched are:
994a65f3 339 *
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340 * 1. ELF header e_shstrndx field.
341 * 2. section header sh_link and sh_info field.
342 * 3. symbol table entry st_shndx field.
343 *
344 * The above example now should look like:
345
346 **** SECTION HEADER TABLE ****
347[No] Type Flags Addr Offset Size Name
348 Link Info Adralgn Entsize
349
350[1] 1 2 0x80480d4 0xd4 0x13 .interp
994a65f3 351 0 0 0x1 0
d427b66a 352
e40c4104 353[2] 5 2 0x80480e8 0xe8 0x388 .hash
994a65f3 354 3 0 0x4 0x4
e40c4104
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355
356[3] 11 2 0x8048470 0x470 0x7f0 .dynsym
994a65f3 357 4 1 0x4 0x10
e40c4104
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358
359[4] 3 2 0x8048c60 0xc60 0x3ad .dynstr
994a65f3 360 0 0 0x1 0
e40c4104
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361
362[5] 9 2 0x8049010 0x1010 0x338 .rel.plt
994a65f3 363 3 7 0x4 0x8
e40c4104
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364
365[6] 1 6 0x8049348 0x1348 0x3 .init
994a65f3 366 0 0 0x4 0
e40c4104
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367
368[7] 1 6 0x804934c 0x134c 0x680 .plt
994a65f3 369 0 0 0x4 0x4
e40c4104
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370
371[8] 1 6 0x80499cc 0x19cc 0x3c56f .text
994a65f3 372 0 0 0x4 0
e40c4104
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373
374[9] 1 6 0x8085f3c 0x3df3c 0x3 .fini
994a65f3 375 0 0 0x4 0
e40c4104
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376
377[10] 1 2 0x8085f40 0x3df40 0x69c .rodata
994a65f3 378 0 0 0x4 0
e40c4104
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379
380[11] 1 2 0x80865dc 0x3e5dc 0xd51 .rodata1
994a65f3 381 0 0 0x4 0
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382
383[12] 1 3 0x8088330 0x3f330 0x20afc .data
994a65f3 384 0 0 0x4 0
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385
386[13] 1 3 0x80a8e2c 0x5fe2c 0x89d .data1
994a65f3 387 0 0 0x4 0
e40c4104
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388
389[14] 1 3 0x80a96cc 0x606cc 0x1a8 .got
994a65f3 390 0 0 0x4 0x4
e40c4104
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391
392[15] 6 3 0x80a9874 0x60874 0x80 .dynamic
994a65f3 393 4 0 0x4 0x8
e40c4104
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394
395[16] 1 3 0x80a98f4 0x608f4 0x1cf0c .data
994a65f3 396 0 0 0x4 0
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397
398[17] 8 3 0x80c6800 0x7d800 0 .bss
994a65f3 399 0 0 0x4 0
e40c4104
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400
401[18] 2 0 0 0x7d800 0x9b90 .symtab
994a65f3 402 19 371 0x4 0x10
e40c4104
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403
404[19] 3 0 0 0x87390 0x8526 .strtab
994a65f3 405 0 0 0x1 0
e40c4104
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406
407[20] 3 0 0 0x8f8b6 0x93 .shstrtab
994a65f3 408 0 0 0x1 0
e40c4104
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409
410[21] 1 0 0 0x8f949 0x68b7 .comment
994a65f3 411 0 0 0x1 0
e40c4104
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412
413 */
414\f
d427b66a
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415#include <sys/types.h>
416#include <stdio.h>
417#include <sys/stat.h>
418#include <memory.h>
419#include <string.h>
420#include <errno.h>
421#include <unistd.h>
422#include <fcntl.h>
cb1ee811 423#if !defined (__NetBSD__) && !defined (__OpenBSD__)
d427b66a 424#include <elf.h>
e5d0f709 425#endif
d427b66a 426#include <sys/mman.h>
9240b21d
RS
427#if defined (__sony_news) && defined (_SYSTYPE_SYSV)
428#include <sys/elf_mips.h>
429#include <sym.h>
430#endif /* __sony_news && _SYSTYPE_SYSV */
d427b66a 431
cb1ee811 432#if defined (__alpha__) && !defined (__NetBSD__) && !defined (__OpenBSD__)
e5d0f709 433#include <sym.h> /* get COFF debugging symbol table declaration */
265b2695
RS
434#endif
435
e5d0f709
RS
436#ifdef __NetBSD__
437/*
438 * NetBSD does not have normal-looking user-land ELF support.
439 */
440# ifdef __alpha__
441# define ELFSIZE 64
442# else
443# define ELFSIZE 32
444# endif
445# include <sys/exec_elf.h>
446
447# define PT_LOAD Elf_pt_load
448# define SHT_SYMTAB Elf_sht_symtab
449# define SHT_DYNSYM Elf_sht_dynsym
450# define SHT_NULL Elf_sht_null
451# define SHT_NOBITS Elf_sht_nobits
452# define SHT_REL Elf_sht_rel
453# define SHT_RELA Elf_sht_rela
454
455# define SHN_UNDEF Elf_eshn_undefined
456# define SHN_ABS Elf_eshn_absolute
457# define SHN_COMMON Elf_eshn_common
458
459/*
460 * The magic of picking the right size types is handled by the ELFSIZE
461 * definition above.
462 */
463# ifdef __STDC__
464# define ElfW(type) Elf_##type
465# else
466# define ElfW(type) Elf_/**/type
467# endif
468
469# ifdef __alpha__
470# include <sys/exec_ecoff.h>
471# define HDRR struct ecoff_symhdr
472# define pHDRR HDRR *
473# endif
474#endif /* __NetBSD__ */
475
cb1ee811
RS
476#ifdef __OpenBSD__
477# include <sys/exec_elf.h>
478#endif
479
265b2695
RS
480#if __GNU_LIBRARY__ - 0 >= 6
481# include <link.h> /* get ElfW etc */
482#endif
483
484#ifndef ElfW
485# ifdef __STDC__
486# define ElfW(type) Elf32_##type
487# else
488# define ElfW(type) Elf32_/**/type
489# endif
490#endif
491
d427b66a 492#ifndef emacs
d7cb42c3 493#define fatal(a, b, c) fprintf (stderr, a, b, c), exit (1)
d427b66a 494#else
82142eb0 495#include <config.h>
d7cb42c3 496extern void fatal (char *, ...);
d427b66a
JB
497#endif
498
d8858cfe
RS
499#ifndef ELF_BSS_SECTION_NAME
500#define ELF_BSS_SECTION_NAME ".bss"
501#endif
502
d427b66a
JB
503/* Get the address of a particular section or program header entry,
504 * accounting for the size of the entries.
505 */
ea083293
RS
506/*
507 On PPC Reference Platform running Solaris 2.5.1
508 the plt section is also of type NOBI like the bss section.
509 (not really stored) and therefore sections after the bss
510 section start at the plt offset. The plt section is always
511 the one just before the bss section.
512 Thus, we modify the test from
513 if (NEW_SECTION_H (nn).sh_offset >= new_data2_offset)
514 to
515 if (NEW_SECTION_H (nn).sh_offset >=
516 OLD_SECTION_H (old_bss_index-1).sh_offset)
517 This is just a hack. We should put the new data section
518 before the .plt section.
519 And we should not have this routine at all but use
520 the libelf library to read the old file and create the new
521 file.
522 The changed code is minimal and depends on prep set in m/prep.h
523 Erik Deumens
524 Quantum Theory Project
525 University of Florida
526 deumens@qtp.ufl.edu
527 Apr 23, 1996
528 */
d427b66a
JB
529
530#define OLD_SECTION_H(n) \
265b2695 531 (*(ElfW(Shdr) *) ((byte *) old_section_h + old_file_h->e_shentsize * (n)))
d427b66a 532#define NEW_SECTION_H(n) \
265b2695 533 (*(ElfW(Shdr) *) ((byte *) new_section_h + new_file_h->e_shentsize * (n)))
d427b66a 534#define OLD_PROGRAM_H(n) \
265b2695 535 (*(ElfW(Phdr) *) ((byte *) old_program_h + old_file_h->e_phentsize * (n)))
d427b66a 536#define NEW_PROGRAM_H(n) \
265b2695 537 (*(ElfW(Phdr) *) ((byte *) new_program_h + new_file_h->e_phentsize * (n)))
d427b66a 538
e40c4104
RS
539#define PATCH_INDEX(n) \
540 do { \
d7cb42c3 541 if ((int) (n) >= old_bss_index) \
e40c4104 542 (n)++; } while (0)
d427b66a
JB
543typedef unsigned char byte;
544
e40c4104
RS
545/* Round X up to a multiple of Y. */
546
4461bfd3 547ElfW(Addr)
e40c4104 548round_up (x, y)
4461bfd3 549 ElfW(Addr) x, y;
e40c4104
RS
550{
551 int rem = x % y;
552 if (rem == 0)
553 return x;
554 return x - rem + y;
555}
556
d427b66a
JB
557/* ****************************************************************
558 * unexec
559 *
560 * driving logic.
561 *
562 * In ELF, this works by replacing the old .bss section with a new
563 * .data section, and inserting an empty .bss immediately afterwards.
564 *
565 */
566void
567unexec (new_name, old_name, data_start, bss_start, entry_address)
568 char *new_name, *old_name;
569 unsigned data_start, bss_start, entry_address;
570{
d427b66a
JB
571 int new_file, old_file, new_file_size;
572
573 /* Pointers to the base of the image of the two files. */
574 caddr_t old_base, new_base;
575
576 /* Pointers to the file, program and section headers for the old and new
577 * files.
578 */
265b2695
RS
579 ElfW(Ehdr) *old_file_h, *new_file_h;
580 ElfW(Phdr) *old_program_h, *new_program_h;
581 ElfW(Shdr) *old_section_h, *new_section_h;
d427b66a
JB
582
583 /* Point to the section name table in the old file */
584 char *old_section_names;
585
265b2695
RS
586 ElfW(Addr) old_bss_addr, new_bss_addr;
587 ElfW(Word) old_bss_size, new_data2_size;
588 ElfW(Off) new_data2_offset;
589 ElfW(Addr) new_data2_addr;
d427b66a 590
d283640e 591 int n, nn, old_bss_index, old_data_index, new_data2_index;
9240b21d
RS
592#if defined ( __sony_news) && defined (_SYSTYPE_SYSV)
593 int old_sbss_index, old_mdebug_index;
594#endif /* __sony_news && _SYSTYPE_SYSV */
d427b66a
JB
595 struct stat stat_buf;
596
597 /* Open the old file & map it into the address space. */
598
599 old_file = open (old_name, O_RDONLY);
600
601 if (old_file < 0)
602 fatal ("Can't open %s for reading: errno %d\n", old_name, errno);
603
604 if (fstat (old_file, &stat_buf) == -1)
d7cb42c3 605 fatal ("Can't fstat (%s): errno %d\n", old_name, errno);
d427b66a 606
89b95605
RS
607 old_base = mmap ((caddr_t) 0, stat_buf.st_size, PROT_READ, MAP_SHARED,
608 old_file, 0);
d427b66a
JB
609
610 if (old_base == (caddr_t) -1)
d7cb42c3 611 fatal ("Can't mmap (%s): errno %d\n", old_name, errno);
d427b66a
JB
612
613#ifdef DEBUG
d283640e
KH
614 fprintf (stderr, "mmap (%s, %x) -> %x\n", old_name, stat_buf.st_size,
615 old_base);
d427b66a
JB
616#endif
617
618 /* Get pointers to headers & section names */
619
265b2695
RS
620 old_file_h = (ElfW(Ehdr) *) old_base;
621 old_program_h = (ElfW(Phdr) *) ((byte *) old_base + old_file_h->e_phoff);
622 old_section_h = (ElfW(Shdr) *) ((byte *) old_base + old_file_h->e_shoff);
d427b66a 623 old_section_names = (char *) old_base
d7cb42c3 624 + OLD_SECTION_H (old_file_h->e_shstrndx).sh_offset;
d427b66a
JB
625
626 /* Find the old .bss section. Figure out parameters of the new
627 * data2 and bss sections.
628 */
629
d7cb42c3
RS
630 for (old_bss_index = 1; old_bss_index < (int) old_file_h->e_shnum;
631 old_bss_index++)
d427b66a
JB
632 {
633#ifdef DEBUG
634 fprintf (stderr, "Looking for .bss - found %s\n",
d7cb42c3 635 old_section_names + OLD_SECTION_H (old_bss_index).sh_name);
d427b66a 636#endif
d7cb42c3 637 if (!strcmp (old_section_names + OLD_SECTION_H (old_bss_index).sh_name,
d8858cfe 638 ELF_BSS_SECTION_NAME))
d427b66a
JB
639 break;
640 }
641 if (old_bss_index == old_file_h->e_shnum)
642 fatal ("Can't find .bss in %s.\n", old_name, 0);
643
9240b21d
RS
644#if defined (__sony_news) && defined (_SYSTYPE_SYSV)
645 for (old_sbss_index = 1; old_sbss_index < (int) old_file_h->e_shnum;
646 old_sbss_index++)
647 {
648#ifdef DEBUG
649 fprintf (stderr, "Looking for .sbss - found %s\n",
650 old_section_names + OLD_SECTION_H (old_sbss_index).sh_name);
651#endif
652 if (!strcmp (old_section_names + OLD_SECTION_H (old_sbss_index).sh_name,
653 ".sbss"))
654 break;
655 }
656 if (old_sbss_index == old_file_h->e_shnum)
657 {
658 old_bss_addr = OLD_SECTION_H(old_bss_index).sh_addr;
659 old_bss_size = OLD_SECTION_H(old_bss_index).sh_size;
660 new_data2_offset = OLD_SECTION_H(old_bss_index).sh_offset;
661 new_data2_index = old_bss_index;
662 }
663 else
664 {
665 old_bss_addr = OLD_SECTION_H(old_sbss_index).sh_addr;
666 old_bss_size = OLD_SECTION_H(old_bss_index).sh_size
667 + OLD_SECTION_H(old_sbss_index).sh_size;
668 new_data2_offset = OLD_SECTION_H(old_sbss_index).sh_offset;
669 new_data2_index = old_sbss_index;
670 }
671
672 for (old_mdebug_index = 1; old_mdebug_index < (int) old_file_h->e_shnum;
673 old_mdebug_index++)
674 {
675#ifdef DEBUG
676 fprintf (stderr, "Looking for .mdebug - found %s\n",
677 old_section_names + OLD_SECTION_H (old_mdebug_index).sh_name);
678#endif
679 if (!strcmp (old_section_names + OLD_SECTION_H (old_mdebug_index).sh_name,
680 ".mdebug"))
681 break;
682 }
683 if (old_mdebug_index == old_file_h->e_shnum)
684 old_mdebug_index = 0;
685#else /* not (__sony_news && _SYSTYPE_SYSV) */
d7cb42c3
RS
686 old_bss_addr = OLD_SECTION_H (old_bss_index).sh_addr;
687 old_bss_size = OLD_SECTION_H (old_bss_index).sh_size;
9240b21d 688#endif /* not (__sony_news && _SYSTYPE_SYSV) */
cb1ee811 689#if defined (emacs) || !defined (DEBUG)
265b2695 690 new_bss_addr = (ElfW(Addr)) sbrk (0);
d427b66a
JB
691#else
692 new_bss_addr = old_bss_addr + old_bss_size + 0x1234;
693#endif
694 new_data2_addr = old_bss_addr;
695 new_data2_size = new_bss_addr - old_bss_addr;
9240b21d 696#if !defined (__sony_news) || !defined (_SYSTYPE_SYSV)
d7cb42c3 697 new_data2_offset = OLD_SECTION_H (old_bss_index).sh_offset;
9240b21d 698#endif /* not (__sony_news && _SYSTYPE_SYSV) */
d427b66a
JB
699
700#ifdef DEBUG
701 fprintf (stderr, "old_bss_index %d\n", old_bss_index);
d283640e
KH
702 fprintf (stderr, "old_bss_addr %x\n", old_bss_addr);
703 fprintf (stderr, "old_bss_size %x\n", old_bss_size);
704 fprintf (stderr, "new_bss_addr %x\n", new_bss_addr);
705 fprintf (stderr, "new_data2_addr %x\n", new_data2_addr);
706 fprintf (stderr, "new_data2_size %x\n", new_data2_size);
707 fprintf (stderr, "new_data2_offset %x\n", new_data2_offset);
d427b66a
JB
708#endif
709
d283640e 710 if ((unsigned) new_bss_addr < (unsigned) old_bss_addr + old_bss_size)
d427b66a
JB
711 fatal (".bss shrank when undumping???\n", 0, 0);
712
d7cb42c3 713 /* Set the output file to the right size and mmap it. Set
d427b66a
JB
714 * pointers to various interesting objects. stat_buf still has
715 * old_file data.
716 */
717
718 new_file = open (new_name, O_RDWR | O_CREAT, 0666);
719 if (new_file < 0)
d7cb42c3 720 fatal ("Can't creat (%s): errno %d\n", new_name, errno);
d427b66a
JB
721
722 new_file_size = stat_buf.st_size + old_file_h->e_shentsize + new_data2_size;
723
724 if (ftruncate (new_file, new_file_size))
d7cb42c3 725 fatal ("Can't ftruncate (%s): errno %d\n", new_name, errno);
d427b66a 726
04f903c0 727#ifdef UNEXEC_USE_MAP_PRIVATE
89b95605
RS
728 new_base = mmap ((caddr_t) 0, new_file_size, PROT_READ | PROT_WRITE,
729 MAP_PRIVATE, new_file, 0);
04f903c0 730#else
89b95605
RS
731 new_base = mmap ((caddr_t) 0, new_file_size, PROT_READ | PROT_WRITE,
732 MAP_SHARED, new_file, 0);
04f903c0 733#endif
d427b66a
JB
734
735 if (new_base == (caddr_t) -1)
d7cb42c3 736 fatal ("Can't mmap (%s): errno %d\n", new_name, errno);
d427b66a 737
265b2695
RS
738 new_file_h = (ElfW(Ehdr) *) new_base;
739 new_program_h = (ElfW(Phdr) *) ((byte *) new_base + old_file_h->e_phoff);
740 new_section_h = (ElfW(Shdr) *)
d427b66a
JB
741 ((byte *) new_base + old_file_h->e_shoff + new_data2_size);
742
743 /* Make our new file, program and section headers as copies of the
744 * originals.
745 */
746
747 memcpy (new_file_h, old_file_h, old_file_h->e_ehsize);
748 memcpy (new_program_h, old_program_h,
749 old_file_h->e_phnum * old_file_h->e_phentsize);
e40c4104
RS
750
751 /* Modify the e_shstrndx if necessary. */
752 PATCH_INDEX (new_file_h->e_shstrndx);
d427b66a
JB
753
754 /* Fix up file header. We'll add one section. Section header is
755 * further away now.
756 */
757
758 new_file_h->e_shoff += new_data2_size;
759 new_file_h->e_shnum += 1;
760
761#ifdef DEBUG
d283640e 762 fprintf (stderr, "Old section offset %x\n", old_file_h->e_shoff);
d427b66a 763 fprintf (stderr, "Old section count %d\n", old_file_h->e_shnum);
d283640e 764 fprintf (stderr, "New section offset %x\n", new_file_h->e_shoff);
d427b66a
JB
765 fprintf (stderr, "New section count %d\n", new_file_h->e_shnum);
766#endif
767
768 /* Fix up a new program header. Extend the writable data segment so
769 * that the bss area is covered too. Find that segment by looking
770 * for a segment that ends just before the .bss area. Make sure
771 * that no segments are above the new .data2. Put a loop at the end
772 * to adjust the offset and address of any segment that is above
773 * data2, just in case we decide to allow this later.
774 */
775
776 for (n = new_file_h->e_phnum - 1; n >= 0; n--)
777 {
e40c4104 778 /* Compute maximum of all requirements for alignment of section. */
d283640e 779 int alignment = (NEW_PROGRAM_H (n)).p_align;
e40c4104
RS
780 if ((OLD_SECTION_H (old_bss_index)).sh_addralign > alignment)
781 alignment = OLD_SECTION_H (old_bss_index).sh_addralign;
782
9240b21d
RS
783#if defined (__sony_news) && defined (_SYSTYPE_SYSV)
784 if (NEW_PROGRAM_H (n).p_vaddr + NEW_PROGRAM_H (n).p_filesz
785 > round_up (old_bss_addr, alignment))
786 fatal ("Program segment above .bss in %s\n", old_name, 0);
787#else /* not (__sony_news && _SYSTYPE_SYSV) */
d7cb42c3 788 if (NEW_PROGRAM_H (n).p_vaddr + NEW_PROGRAM_H (n).p_filesz > old_bss_addr)
d427b66a 789 fatal ("Program segment above .bss in %s\n", old_name, 0);
9240b21d 790#endif /* not (__sony_news && _SYSTYPE_SYSV) */
d427b66a 791
d7cb42c3 792 if (NEW_PROGRAM_H (n).p_type == PT_LOAD
e40c4104
RS
793 && (round_up ((NEW_PROGRAM_H (n)).p_vaddr
794 + (NEW_PROGRAM_H (n)).p_filesz,
795 alignment)
796 == round_up (old_bss_addr, alignment)))
d427b66a
JB
797 break;
798 }
799 if (n < 0)
800 fatal ("Couldn't find segment next to .bss in %s\n", old_name, 0);
801
d7cb42c3
RS
802 NEW_PROGRAM_H (n).p_filesz += new_data2_size;
803 NEW_PROGRAM_H (n).p_memsz = NEW_PROGRAM_H (n).p_filesz;
d427b66a
JB
804
805#if 0 /* Maybe allow section after data2 - does this ever happen? */
806 for (n = new_file_h->e_phnum - 1; n >= 0; n--)
807 {
d7cb42c3
RS
808 if (NEW_PROGRAM_H (n).p_vaddr
809 && NEW_PROGRAM_H (n).p_vaddr >= new_data2_addr)
810 NEW_PROGRAM_H (n).p_vaddr += new_data2_size - old_bss_size;
d427b66a 811
d7cb42c3
RS
812 if (NEW_PROGRAM_H (n).p_offset >= new_data2_offset)
813 NEW_PROGRAM_H (n).p_offset += new_data2_size;
d427b66a
JB
814 }
815#endif
816
817 /* Fix up section headers based on new .data2 section. Any section
818 * whose offset or virtual address is after the new .data2 section
819 * gets its value adjusted. .bss size becomes zero and new address
820 * is set. data2 section header gets added by copying the existing
821 * .data header and modifying the offset, address and size.
822 */
d7cb42c3 823 for (old_data_index = 1; old_data_index < (int) old_file_h->e_shnum;
d427b66a 824 old_data_index++)
d7cb42c3 825 if (!strcmp (old_section_names + OLD_SECTION_H (old_data_index).sh_name,
d427b66a
JB
826 ".data"))
827 break;
828 if (old_data_index == old_file_h->e_shnum)
829 fatal ("Can't find .data in %s.\n", old_name, 0);
830
994a65f3 831 /* Walk through all section headers, insert the new data2 section right
e40c4104 832 before the new bss section. */
d7cb42c3 833 for (n = 1, nn = 1; n < (int) old_file_h->e_shnum; n++, nn++)
d427b66a
JB
834 {
835 caddr_t src;
9240b21d
RS
836 int temp_index;
837#if defined (__sony_news) && defined (_SYSTYPE_SYSV)
838 /* If it is (s)bss section, insert the new data2 section before it. */
839 /* new_data2_index is the index of either old_sbss or old_bss, that was
840 chosen as a section for new_data2. */
841 temp_index = new_data2_index;
842#else /* not (__sony_news && _SYSTYPE_SYSV) */
843 /* If it is bss section, insert the new data2 section before it. */
844 temp_index = old_bss_index;
845#endif /* not (__sony_news && _SYSTYPE_SYSV) */
846 if (n == temp_index)
e40c4104
RS
847 {
848 /* Steal the data section header for this data2 section. */
d7cb42c3 849 memcpy (&NEW_SECTION_H (nn), &OLD_SECTION_H (old_data_index),
e40c4104 850 new_file_h->e_shentsize);
994a65f3 851
d7cb42c3
RS
852 NEW_SECTION_H (nn).sh_addr = new_data2_addr;
853 NEW_SECTION_H (nn).sh_offset = new_data2_offset;
854 NEW_SECTION_H (nn).sh_size = new_data2_size;
e40c4104
RS
855 /* Use the bss section's alignment. This will assure that the
856 new data2 section always be placed in the same spot as the old
857 bss section by any other application. */
d7cb42c3 858 NEW_SECTION_H (nn).sh_addralign = OLD_SECTION_H (n).sh_addralign;
e40c4104
RS
859
860 /* Now copy over what we have in the memory now. */
994a65f3
RM
861 memcpy (NEW_SECTION_H (nn).sh_offset + new_base,
862 (caddr_t) OLD_SECTION_H (n).sh_addr,
e40c4104
RS
863 new_data2_size);
864 nn++;
865 }
994a65f3
RM
866
867 memcpy (&NEW_SECTION_H (nn), &OLD_SECTION_H (n),
e40c4104 868 old_file_h->e_shentsize);
9240b21d
RS
869
870 if (n == old_bss_index
871#if defined (__sony_news) && defined (_SYSTYPE_SYSV)
872 /* The new bss and sbss section's size is zero, and its file offset
873 and virtual address should be off by NEW_DATA2_SIZE. */
874 || n == old_sbss_index
875#endif /* __sony_news and _SYSTYPE_SYSV */
876 )
e40c4104
RS
877 {
878 /* NN should be `old_bss_index + 1' at this point. */
d7cb42c3
RS
879 NEW_SECTION_H (nn).sh_offset += new_data2_size;
880 NEW_SECTION_H (nn).sh_addr += new_data2_size;
e40c4104 881 /* Let the new bss section address alignment be the same as the
994a65f3 882 section address alignment followed the old bss section, so
e40c4104 883 this section will be placed in exactly the same place. */
d7cb42c3
RS
884 NEW_SECTION_H (nn).sh_addralign = OLD_SECTION_H (nn).sh_addralign;
885 NEW_SECTION_H (nn).sh_size = 0;
e40c4104 886 }
85b2e0ee
RS
887 else
888 {
889 /* Any section that was original placed AFTER the bss
890 section should now be off by NEW_DATA2_SIZE. */
ea083293
RS
891#ifdef SOLARIS_POWERPC
892 /* On PPC Reference Platform running Solaris 2.5.1
893 the plt section is also of type NOBI like the bss section.
894 (not really stored) and therefore sections after the bss
895 section start at the plt offset. The plt section is always
896 the one just before the bss section.
897 It would be better to put the new data section before
898 the .plt section, or use libelf instead.
899 Erik Deumens, deumens@qtp.ufl.edu. */
900 if (NEW_SECTION_H (nn).sh_offset
901 >= OLD_SECTION_H (old_bss_index-1).sh_offset)
902 NEW_SECTION_H (nn).sh_offset += new_data2_size;
903#else
faee8ef0
RS
904 if (round_up (NEW_SECTION_H (nn).sh_offset,
905 OLD_SECTION_H (old_bss_index).sh_addralign)
906 >= new_data2_offset)
85b2e0ee 907 NEW_SECTION_H (nn).sh_offset += new_data2_size;
ea083293 908#endif
85b2e0ee
RS
909 /* Any section that was originally placed after the section
910 header table should now be off by the size of one section
911 header table entry. */
912 if (NEW_SECTION_H (nn).sh_offset > new_file_h->e_shoff)
913 NEW_SECTION_H (nn).sh_offset += new_file_h->e_shentsize;
914 }
915
e40c4104 916 /* If any section hdr refers to the section after the new .data
994a65f3 917 section, make it refer to next one because we have inserted
8917361f 918 a new section in between. */
994a65f3 919
d7cb42c3 920 PATCH_INDEX (NEW_SECTION_H (nn).sh_link);
8917361f
RS
921 /* For symbol tables, info is a symbol table index,
922 so don't change it. */
923 if (NEW_SECTION_H (nn).sh_type != SHT_SYMTAB
924 && NEW_SECTION_H (nn).sh_type != SHT_DYNSYM)
925 PATCH_INDEX (NEW_SECTION_H (nn).sh_info);
926
927 /* Now, start to copy the content of sections. */
d7cb42c3
RS
928 if (NEW_SECTION_H (nn).sh_type == SHT_NULL
929 || NEW_SECTION_H (nn).sh_type == SHT_NOBITS)
d427b66a 930 continue;
994a65f3 931
e40c4104 932 /* Write out the sections. .data and .data1 (and data2, called
8917361f
RS
933 ".data" in the strings table) get copied from the current process
934 instead of the old file. */
d7cb42c3 935 if (!strcmp (old_section_names + NEW_SECTION_H (n).sh_name, ".data")
9240b21d
RS
936#ifdef _nec_ews_svr4 /* hir, 1994.6.13 */
937 || !strcmp ((old_section_names + NEW_SECTION_H(n).sh_name),
938 ".sdata")
939#endif
940#if defined (__sony_news) && defined (_SYSTYPE_SYSV)
941 || !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
942 ".sdata")
943 || !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
944 ".lit4")
945 || !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
946 ".lit8")
947#endif /* __sony_news && _SYSTYPE_SYSV */
d7cb42c3 948 || !strcmp ((old_section_names + NEW_SECTION_H (n).sh_name),
d427b66a 949 ".data1"))
d7cb42c3 950 src = (caddr_t) OLD_SECTION_H (n).sh_addr;
d427b66a 951 else
d7cb42c3 952 src = old_base + OLD_SECTION_H (n).sh_offset;
994a65f3 953
d7cb42c3
RS
954 memcpy (NEW_SECTION_H (nn).sh_offset + new_base, src,
955 NEW_SECTION_H (nn).sh_size);
e40c4104 956
265b2695
RS
957#ifdef __alpha__
958 /* Update Alpha COFF symbol table: */
959 if (strcmp (old_section_names + OLD_SECTION_H (n).sh_name, ".mdebug")
960 == 0)
961 {
962 pHDRR symhdr = (pHDRR) (NEW_SECTION_H (nn).sh_offset + new_base);
963
964 symhdr->cbLineOffset += new_data2_size;
965 symhdr->cbDnOffset += new_data2_size;
966 symhdr->cbPdOffset += new_data2_size;
967 symhdr->cbSymOffset += new_data2_size;
968 symhdr->cbOptOffset += new_data2_size;
969 symhdr->cbAuxOffset += new_data2_size;
970 symhdr->cbSsOffset += new_data2_size;
971 symhdr->cbSsExtOffset += new_data2_size;
972 symhdr->cbFdOffset += new_data2_size;
973 symhdr->cbRfdOffset += new_data2_size;
974 symhdr->cbExtOffset += new_data2_size;
975 }
976#endif /* __alpha__ */
977
9240b21d
RS
978#if defined (__sony_news) && defined (_SYSTYPE_SYSV)
979 if (NEW_SECTION_H (nn).sh_type == SHT_MIPS_DEBUG && old_mdebug_index)
980 {
981 int diff = NEW_SECTION_H(nn).sh_offset
982 - OLD_SECTION_H(old_mdebug_index).sh_offset;
983 HDRR *phdr = (HDRR *)(NEW_SECTION_H (nn).sh_offset + new_base);
984
985 if (diff)
986 {
987 phdr->cbLineOffset += diff;
988 phdr->cbDnOffset += diff;
989 phdr->cbPdOffset += diff;
990 phdr->cbSymOffset += diff;
991 phdr->cbOptOffset += diff;
992 phdr->cbAuxOffset += diff;
993 phdr->cbSsOffset += diff;
994 phdr->cbSsExtOffset += diff;
995 phdr->cbFdOffset += diff;
996 phdr->cbRfdOffset += diff;
997 phdr->cbExtOffset += diff;
998 }
999 }
1000#endif /* __sony_news && _SYSTYPE_SYSV */
8917361f 1001 /* If it is the symbol table, its st_shndx field needs to be patched. */
d7cb42c3
RS
1002 if (NEW_SECTION_H (nn).sh_type == SHT_SYMTAB
1003 || NEW_SECTION_H (nn).sh_type == SHT_DYNSYM)
e40c4104 1004 {
265b2695 1005 ElfW(Shdr) *spt = &NEW_SECTION_H (nn);
e40c4104 1006 unsigned int num = spt->sh_size / spt->sh_entsize;
265b2695 1007 ElfW(Sym) * sym = (ElfW(Sym) *) (NEW_SECTION_H (nn).sh_offset +
e40c4104
RS
1008 new_base);
1009 for (; num--; sym++)
1010 {
1011 if ((sym->st_shndx == SHN_UNDEF)
1012 || (sym->st_shndx == SHN_ABS)
1013 || (sym->st_shndx == SHN_COMMON))
1014 continue;
994a65f3 1015
d7cb42c3 1016 PATCH_INDEX (sym->st_shndx);
e40c4104
RS
1017 }
1018 }
d427b66a
JB
1019 }
1020
8917361f 1021 /* Update the symbol values of _edata and _end. */
8bf761ce
RS
1022 for (n = new_file_h->e_shnum - 1; n; n--)
1023 {
1024 byte *symnames;
265b2695 1025 ElfW(Sym) *symp, *symendp;
8bf761ce
RS
1026
1027 if (NEW_SECTION_H (n).sh_type != SHT_DYNSYM
1028 && NEW_SECTION_H (n).sh_type != SHT_SYMTAB)
1029 continue;
1030
8c1e9afe
KH
1031 symnames = ((byte *) new_base
1032 + NEW_SECTION_H (NEW_SECTION_H (n).sh_link).sh_offset);
265b2695
RS
1033 symp = (ElfW(Sym) *) (NEW_SECTION_H (n).sh_offset + new_base);
1034 symendp = (ElfW(Sym) *) ((byte *)symp + NEW_SECTION_H (n).sh_size);
8bf761ce
RS
1035
1036 for (; symp < symendp; symp ++)
1037 if (strcmp ((char *) (symnames + symp->st_name), "_end") == 0
1038 || strcmp ((char *) (symnames + symp->st_name), "_edata") == 0)
1039 memcpy (&symp->st_value, &new_bss_addr, sizeof (new_bss_addr));
1040 }
1041
48240339
KH
1042 /* This loop seeks out relocation sections for the data section, so
1043 that it can undo relocations performed by the runtime linker. */
1044 for (n = new_file_h->e_shnum - 1; n; n--)
1045 {
265b2695 1046 ElfW(Shdr) section = NEW_SECTION_H (n);
48240339
KH
1047 switch (section.sh_type) {
1048 default:
1049 break;
1050 case SHT_REL:
1051 case SHT_RELA:
994a65f3
RM
1052 /* This code handles two different size structs, but there should
1053 be no harm in that provided that r_offset is always the first
1054 member. */
48240339
KH
1055 nn = section.sh_info;
1056 if (!strcmp (old_section_names + NEW_SECTION_H (nn).sh_name, ".data")
1057 || !strcmp ((old_section_names + NEW_SECTION_H (nn).sh_name),
1058 ".data1"))
1059 {
265b2695 1060 ElfW(Addr) offset = NEW_SECTION_H (nn).sh_addr -
48240339
KH
1061 NEW_SECTION_H (nn).sh_offset;
1062 caddr_t reloc = old_base + section.sh_offset, end;
1063 for (end = reloc + section.sh_size; reloc < end;
1064 reloc += section.sh_entsize)
1065 {
265b2695
RS
1066 ElfW(Addr) addr = ((ElfW(Rel) *) reloc)->r_offset - offset;
1067#ifdef __alpha__
1068 /* The Alpha ELF binutils currently have a bug that
1069 sometimes results in relocs that contain all
1070 zeroes. Work around this for now... */
1071 if (((ElfW(Rel) *) reloc)->r_offset == 0)
1072 continue;
1073#endif
1074 memcpy (new_base + addr, old_base + addr, sizeof(ElfW(Addr)));
48240339
KH
1075 }
1076 }
1077 break;
1078 }
1079 }
48240339 1080
04f903c0
KH
1081#ifdef UNEXEC_USE_MAP_PRIVATE
1082 if (lseek (new_file, 0, SEEK_SET) == -1)
1083 fatal ("Can't rewind (%s): errno %d\n", new_name, errno);
1084
1085 if (write (new_file, new_base, new_file_size) != new_file_size)
1086 fatal ("Can't write (%s): errno %d\n", new_name, errno);
1087#endif
1088
8917361f 1089 /* Close the files and make the new file executable. */
d427b66a
JB
1090
1091 if (close (old_file))
d7cb42c3 1092 fatal ("Can't close (%s): errno %d\n", old_name, errno);
d427b66a
JB
1093
1094 if (close (new_file))
d7cb42c3 1095 fatal ("Can't close (%s): errno %d\n", new_name, errno);
d427b66a
JB
1096
1097 if (stat (new_name, &stat_buf) == -1)
d7cb42c3 1098 fatal ("Can't stat (%s): errno %d\n", new_name, errno);
d427b66a
JB
1099
1100 n = umask (777);
1101 umask (n);
1102 stat_buf.st_mode |= 0111 & ~n;
1103 if (chmod (new_name, stat_buf.st_mode) == -1)
d7cb42c3 1104 fatal ("Can't chmod (%s): errno %d\n", new_name, errno);
d427b66a 1105}