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d871d478 AM |
1 | /* Emulation code used by all ELF targets. |
2 | Copyright (C) 1991-2019 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of the GNU Binutils. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
19 | MA 02110-1301, USA. */ | |
20 | ||
21 | #include "sysdep.h" | |
22 | #include "bfd.h" | |
23 | #include "ld.h" | |
24 | #include "ldmain.h" | |
25 | #include "ldmisc.h" | |
26 | #include "ldexp.h" | |
27 | #include "ldlang.h" | |
28 | #include "elf-bfd.h" | |
29 | #include "ldelfgen.h" | |
30 | ||
31 | void | |
32 | ldelf_map_segments (bfd_boolean need_layout) | |
33 | { | |
34 | int tries = 10; | |
35 | ||
36 | do | |
37 | { | |
38 | lang_relax_sections (need_layout); | |
39 | need_layout = FALSE; | |
40 | ||
41 | if (link_info.output_bfd->xvec->flavour == bfd_target_elf_flavour | |
42 | && !bfd_link_relocatable (&link_info)) | |
43 | { | |
44 | bfd_size_type phdr_size; | |
45 | ||
46 | phdr_size = elf_program_header_size (link_info.output_bfd); | |
47 | /* If we don't have user supplied phdrs, throw away any | |
48 | previous linker generated program headers. */ | |
49 | if (lang_phdr_list == NULL) | |
50 | elf_seg_map (link_info.output_bfd) = NULL; | |
51 | if (!_bfd_elf_map_sections_to_segments (link_info.output_bfd, | |
52 | &link_info)) | |
53 | einfo (_("%F%P: map sections to segments failed: %E\n")); | |
54 | ||
55 | if (phdr_size != elf_program_header_size (link_info.output_bfd)) | |
56 | { | |
57 | if (tries > 6) | |
58 | /* The first few times we allow any change to | |
59 | phdr_size . */ | |
60 | need_layout = TRUE; | |
61 | else if (phdr_size | |
62 | < elf_program_header_size (link_info.output_bfd)) | |
63 | /* After that we only allow the size to grow. */ | |
64 | need_layout = TRUE; | |
65 | else | |
66 | elf_program_header_size (link_info.output_bfd) = phdr_size; | |
67 | } | |
68 | } | |
69 | } | |
70 | while (need_layout && --tries); | |
71 | ||
72 | if (tries == 0) | |
73 | einfo (_("%F%P: looping in map_segments")); | |
74 | } |